| 1 |
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| 2 | |
| 3 | * INET An implementation of the TCP/IP protocol suite for the LINUX
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| 4 | * operating system. INET is implemented using the BSD Socket
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| 5 | * interface as the means of communication with the user level.
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| 6 | *
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| 7 | * Definitions for the Interfaces handler.
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| 8 | *
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| 9 | * Version: @(#)dev.h 1.0.10 08/12/93
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| 10 | *
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| 11 | * Authors: Ross Biro
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| 12 | * Fred N. van Kempen, <[email protected]>
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| 13 | * Corey Minyard <[email protected]>
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| 14 | * Donald J. Becker, <[email protected]>
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| 15 | * Alan Cox, <[email protected]>
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| 16 | * Bjorn Ekwall. <[email protected]>
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| 17 | * Pekka Riikonen <[email protected]>
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| 18 | *
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| 19 | * Moved to /usr/include/linux for NET3
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| 20 |
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| 21 | #ifndef _LINUX_NETDEVICE_H
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| 22 | #define _LINUX_NETDEVICE_H
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| 23 |
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| 24 | #include <linux/timer.h>
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| 25 | #include <linux/bug.h>
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| 26 | #include <linux/delay.h>
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| 27 | #include <linux/atomic.h>
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| 28 | #include <linux/prefetch.h>
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| 29 | #include <asm/cache.h>
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| 30 | #include <asm/byteorder.h>
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| 31 | #include <asm/local.h>
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| 32 |
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| 33 | #include <linux/percpu.h>
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| 34 | #include <linux/rculist.h>
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| 35 | #include <linux/workqueue.h>
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| 36 | #include <linux/dynamic_queue_limits.h>
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| 37 |
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| 38 | #include <net/net_namespace.h>
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| 39 | #ifdef CONFIG_DCB
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| 40 | #include <net/dcbnl.h>
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| 41 | #endif
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| 42 | #include <net/netprio_cgroup.h>
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| 43 | #include <linux/netdev_features.h>
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| 44 | #include <linux/neighbour.h>
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| 45 | #include <linux/netdevice_xmit.h>
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| 46 | #include <uapi/linux/netdevice.h>
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| 47 | #include <uapi/linux/if_bonding.h>
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| 48 | #include <uapi/linux/pkt_cls.h>
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| 49 | #include <uapi/linux/netdev.h>
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| 50 | #include <linux/hashtable.h>
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| 51 | #include <linux/rbtree.h>
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| 52 | #include <net/net_trackers.h>
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| 53 | #include <net/net_debug.h>
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| 54 | #include <net/dropreason-core.h>
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| 55 | #include <net/neighbour_tables.h>
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| 56 |
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| 57 | struct netpoll_info;
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| 58 | struct device;
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| 59 | struct ethtool_ops;
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| 60 | struct kernel_hwtstamp_config;
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| 61 | struct phy_device;
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| 62 | struct dsa_port;
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| 63 | struct ip_tunnel_parm_kern;
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| 64 | struct macsec_context;
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| 65 | struct macsec_ops;
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| 66 | struct netdev_config;
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| 67 | struct netdev_name_node;
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| 68 | struct sd_flow_limit;
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| 69 | struct sfp_bus;
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| 70 |
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| 71 | struct wireless_dev;
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| 72 |
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| 73 | struct wpan_dev;
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| 74 | struct mpls_dev;
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| 75 |
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| 76 | struct udp_tunnel_info;
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| 77 | struct udp_tunnel_nic_info;
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| 78 | struct udp_tunnel_nic;
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| 79 | struct bpf_prog;
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| 80 | struct xdp_buff;
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| 81 | struct xdp_frame;
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| 82 | struct xdp_metadata_ops;
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| 83 | struct xdp_md;
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| 84 | struct ethtool_netdev_state;
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| 85 | struct phy_link_topology;
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| 86 | struct hwtstamp_provider;
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| 87 |
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| 88 | typedef u32 xdp_features_t;
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| 89 |
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| 90 | void synchronize_net(void);
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| 91 | void netdev_set_default_ethtool_ops(struct net_device *dev,
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| 92 | const struct ethtool_ops *ops);
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| 93 | void netdev_sw_irq_coalesce_default_on(struct net_device *dev);
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| 94 |
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| 95 |
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| 96 | #define NET_RX_SUCCESS 0
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| 97 | #define NET_RX_DROP 1
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| 98 |
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| 99 | #define MAX_NEST_DEV 8
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| 100 |
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| 101 | |
| 102 | * Transmit return codes: transmit return codes originate from three different
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| 103 | * namespaces:
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| 104 | *
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| 105 | * - qdisc return codes
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| 106 | * - driver transmit return codes
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| 107 | * - errno values
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| 108 | *
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| 109 | * Drivers are allowed to return any one of those in their hard_start_xmit()
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| 110 | * function. Real network devices commonly used with qdiscs should only return
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| 111 | * the driver transmit return codes though - when qdiscs are used, the actual
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| 112 | * transmission happens asynchronously, so the value is not propagated to
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| 113 | * higher layers. Virtual network devices transmit synchronously; in this case
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| 114 | * the driver transmit return codes are consumed by dev_queue_xmit(), and all
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| 115 | * others are propagated to higher layers.
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| 116 |
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| 117 |
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| 118 |
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| 119 | #define NET_XMIT_SUCCESS 0x00
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| 120 | #define NET_XMIT_DROP 0x01
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| 121 | #define NET_XMIT_CN 0x02
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| 122 | #define NET_XMIT_MASK 0x0f
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| 123 |
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| 124 | |
| 125 | * indicates that the device will soon be dropping packets, or already drops
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| 126 | * some packets of the same priority; prompting us to send less aggressively.
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| 127 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e))
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| 128 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
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| 129 |
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| 130 |
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| 131 | #define NETDEV_TX_MASK 0xf0
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| 132 |
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| 133 | enum netdev_tx {
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| 134 | __NETDEV_TX_MIN = INT_MIN,
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| 135 | NETDEV_TX_OK = 0x00,
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| 136 | NETDEV_TX_BUSY = 0x10,
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| 137 | };
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| 138 | typedef enum netdev_tx netdev_tx_t;
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| 139 |
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| 140 | |
| 141 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant;
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| 142 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed.
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| 143 |
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| 144 | static inline bool dev_xmit_complete(int rc)
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| 145 | {
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| 146 | |
| 147 | * Positive cases with an skb consumed by a driver:
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| 148 | * - successful transmission (rc == NETDEV_TX_OK)
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| 149 | * - error while transmitting (rc < 0)
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| 150 | * - error while queueing to a different device (rc & NET_XMIT_MASK)
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| 151 |
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| 152 | if (likely(rc < NET_XMIT_MASK))
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| 153 | return true;
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| 154 |
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| 155 | return false;
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| 156 | }
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| 157 |
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| 158 | |
| 159 | * Compute the worst-case header length according to the protocols
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| 160 | * used.
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| 161 |
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| 162 |
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| 163 | #if defined(CONFIG_HYPERV_NET)
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| 164 | # define LL_MAX_HEADER 128
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| 165 | #elif defined(CONFIG_WLAN)
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| 166 | # if defined(CONFIG_MAC80211_MESH)
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| 167 | # define LL_MAX_HEADER 128
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| 168 | # else
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| 169 | # define LL_MAX_HEADER 96
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| 170 | # endif
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| 171 | #else
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| 172 | # define LL_MAX_HEADER 32
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| 173 | #endif
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| 174 |
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| 175 | #if !IS_ENABLED(CONFIG_NET_IPIP) && !IS_ENABLED(CONFIG_NET_IPGRE) && \
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| 176 | !IS_ENABLED(CONFIG_IPV6_SIT) && !IS_ENABLED(CONFIG_IPV6_TUNNEL)
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| 177 | #define MAX_HEADER LL_MAX_HEADER
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| 178 | #else
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| 179 | #define MAX_HEADER (LL_MAX_HEADER + 48)
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| 180 | #endif
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| 181 |
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| 182 | |
| 183 | * Old network device statistics. Fields are native words
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| 184 | * (unsigned long) so they can be read and written atomically.
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| 185 |
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| 186 |
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| 187 | #define NET_DEV_STAT(FIELD) \
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| 188 | union { \
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| 189 | unsigned long FIELD; \
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| 190 | atomic_long_t __##FIELD; \
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| 191 | }
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| 192 |
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| 193 | struct net_device_stats {
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| 194 | NET_DEV_STAT(rx_packets);
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| 195 | NET_DEV_STAT(tx_packets);
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| 196 | NET_DEV_STAT(rx_bytes);
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| 197 | NET_DEV_STAT(tx_bytes);
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| 198 | NET_DEV_STAT(rx_errors);
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| 199 | NET_DEV_STAT(tx_errors);
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| 200 | NET_DEV_STAT(rx_dropped);
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| 201 | NET_DEV_STAT(tx_dropped);
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| 202 | NET_DEV_STAT(multicast);
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| 203 | NET_DEV_STAT(collisions);
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| 204 | NET_DEV_STAT(rx_length_errors);
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| 205 | NET_DEV_STAT(rx_over_errors);
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| 206 | NET_DEV_STAT(rx_crc_errors);
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| 207 | NET_DEV_STAT(rx_frame_errors);
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| 208 | NET_DEV_STAT(rx_fifo_errors);
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| 209 | NET_DEV_STAT(rx_missed_errors);
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| 210 | NET_DEV_STAT(tx_aborted_errors);
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| 211 | NET_DEV_STAT(tx_carrier_errors);
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| 212 | NET_DEV_STAT(tx_fifo_errors);
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| 213 | NET_DEV_STAT(tx_heartbeat_errors);
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| 214 | NET_DEV_STAT(tx_window_errors);
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| 215 | NET_DEV_STAT(rx_compressed);
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| 216 | NET_DEV_STAT(tx_compressed);
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| 217 | };
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| 218 | #undef NET_DEV_STAT
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| 219 |
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| 220 | |
| 221 | * Try to fit them in a single cache line, for dev_get_stats() sake.
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| 222 |
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| 223 | struct net_device_core_stats {
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| 224 | unsigned long rx_dropped;
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| 225 | unsigned long tx_dropped;
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| 226 | unsigned long rx_nohandler;
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| 227 | unsigned long rx_otherhost_dropped;
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| 228 | } __aligned(4 * sizeof(unsigned long));
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| 229 |
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| 230 | #include <linux/cache.h>
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| 231 | #include <linux/skbuff.h>
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| 232 |
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| 233 | struct neighbour;
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| 234 | struct neigh_parms;
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| 235 | struct sk_buff;
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| 236 |
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| 237 | struct netdev_hw_addr {
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| 238 | struct list_head list;
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| 239 | struct rb_node node;
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| 240 | unsigned char addr[MAX_ADDR_LEN];
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| 241 | unsigned char type;
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| 242 | #define NETDEV_HW_ADDR_T_LAN 1
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| 243 | #define NETDEV_HW_ADDR_T_SAN 2
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| 244 | #define NETDEV_HW_ADDR_T_UNICAST 3
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| 245 | #define NETDEV_HW_ADDR_T_MULTICAST 4
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| 246 | bool global_use;
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| 247 | int sync_cnt;
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| 248 | int refcount;
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| 249 | int synced;
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| 250 | struct rcu_head rcu_head;
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| 251 | };
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| 252 |
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| 253 | struct netdev_hw_addr_list {
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| 254 | struct list_head list;
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| 255 | int count;
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| 256 |
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| 257 |
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| 258 | struct rb_root tree;
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| 259 | };
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| 260 |
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| 261 | #define netdev_hw_addr_list_count(l) ((l)->count)
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| 262 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0)
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| 263 | #define netdev_hw_addr_list_for_each(ha, l) \
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| 264 | list_for_each_entry(ha, &(l)->list, list)
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| 265 |
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| 266 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc)
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| 267 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc)
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| 268 | #define netdev_for_each_uc_addr(ha, dev) \
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| 269 | netdev_hw_addr_list_for_each(ha, &(dev)->uc)
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| 270 | #define netdev_for_each_synced_uc_addr(_ha, _dev) \
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| 271 | netdev_for_each_uc_addr((_ha), (_dev)) \
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| 272 | if ((_ha)->sync_cnt)
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| 273 |
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| 274 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc)
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| 275 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc)
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| 276 | #define netdev_for_each_mc_addr(ha, dev) \
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| 277 | netdev_hw_addr_list_for_each(ha, &(dev)->mc)
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| 278 | #define netdev_for_each_synced_mc_addr(_ha, _dev) \
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| 279 | netdev_for_each_mc_addr((_ha), (_dev)) \
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| 280 | if ((_ha)->sync_cnt)
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| 281 |
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| 282 | struct hh_cache {
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| 283 | unsigned int hh_len;
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| 284 | seqlock_t hh_lock;
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| 285 |
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| 286 |
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| 287 | #define HH_DATA_MOD 16
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| 288 | #define HH_DATA_OFF(__len) \
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| 289 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
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| 290 | #define HH_DATA_ALIGN(__len) \
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| 291 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
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| 292 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)];
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| 293 | };
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| 294 |
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| 295 | |
| 296 | * Alternative is:
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| 297 | * dev->hard_header_len ? (dev->hard_header_len +
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| 298 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
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| 299 | *
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| 300 | * We could use other alignment values, but we must maintain the
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| 301 | * relationship HH alignment <= LL alignment.
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| 302 |
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| 303 | #define LL_RESERVED_SPACE_EX(dev, hlen) \
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| 304 | ((((hlen) + READ_ONCE((dev)->needed_headroom)) \
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| 305 | & ~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
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| 306 | #define LL_RESERVED_SPACE(dev) \
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| 307 | LL_RESERVED_SPACE_EX(dev, (dev)->hard_header_len)
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| 308 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \
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| 309 | ((((dev)->hard_header_len + READ_ONCE((dev)->needed_headroom) + (extra)) \
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| 310 | & ~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
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| 311 |
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| 312 | struct header_ops {
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| 313 | int (*create) (struct sk_buff *skb, struct net_device *dev,
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| 314 | unsigned short type, const void *daddr,
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| 315 | const void *saddr, unsigned int len);
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| 316 | int (*parse)(const struct sk_buff *skb,
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| 317 | const struct net_device *dev,
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| 318 | unsigned char *haddr);
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| 319 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh, __be16 type);
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| 320 | void (*cache_update)(struct hh_cache *hh,
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| 321 | const struct net_device *dev,
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| 322 | const unsigned char *haddr);
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| 323 | bool (*validate)(const char *ll_header, unsigned int len);
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| 324 | __be16 (*parse_protocol)(const struct sk_buff *skb);
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| 325 | };
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| 326 |
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| 327 | |
| 328 | * layer; they may not be explicitly referenced by any other
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| 329 | * code.
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| 330 |
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| 331 |
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| 332 | enum netdev_state_t {
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| 333 | __LINK_STATE_START,
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| 334 | __LINK_STATE_PRESENT,
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| 335 | __LINK_STATE_NOCARRIER,
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| 336 | __LINK_STATE_LINKWATCH_PENDING,
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| 337 | __LINK_STATE_DORMANT,
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| 338 | __LINK_STATE_TESTING,
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| 339 | };
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| 340 |
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| 341 | struct gro_list {
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| 342 | struct list_head list;
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| 343 | int count;
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| 344 | };
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| 345 |
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| 346 | |
| 347 | * size of gro hash buckets, must be <= the number of bits in
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| 348 | * gro_node::bitmask
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| 349 |
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| 350 | #define GRO_HASH_BUCKETS 8
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| 351 |
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| 352 | |
| 353 | * struct gro_node - structure to support Generic Receive Offload
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| 354 | * @bitmask: bitmask to indicate used buckets in @hash
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| 355 | * @hash: hashtable of pending aggregated skbs, separated by flows
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| 356 | * @rx_list: list of pending ``GRO_NORMAL`` skbs
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| 357 | * @rx_count: cached current length of @rx_list
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| 358 | * @cached_napi_id: napi_struct::napi_id cached for hotpath, 0 for standalone
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| 359 |
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| 360 | struct gro_node {
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| 361 | unsigned long bitmask;
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| 362 | struct gro_list hash[GRO_HASH_BUCKETS];
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| 363 | struct list_head rx_list;
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| 364 | u32 rx_count;
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| 365 | u32 cached_napi_id;
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| 366 | };
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| 367 |
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| 368 | |
| 369 | * Structure for per-NAPI config
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| 370 |
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| 371 | struct napi_config {
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| 372 | u64 gro_flush_timeout;
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| 373 | u64 irq_suspend_timeout;
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| 374 | u32 defer_hard_irqs;
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| 375 | cpumask_t affinity_mask;
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| 376 | u8 threaded;
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| 377 | unsigned int napi_id;
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| 378 | };
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| 379 |
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| 380 | |
| 381 | * Structure for NAPI scheduling similar to tasklet but with weighting
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| 382 |
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| 383 | struct napi_struct {
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| 384 |
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| 385 | unsigned long state;
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| 386 | |
| 387 | * changes the state of the NAPI_STATE_SCHED bit. This means
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| 388 | * whoever atomically sets that bit can add this napi_struct
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| 389 | * to the per-CPU poll_list, and whoever clears that bit
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| 390 | * can remove from the list right before clearing the bit.
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| 391 |
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| 392 | struct list_head poll_list;
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| 393 |
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| 394 | int weight;
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| 395 | u32 defer_hard_irqs_count;
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| 396 | int (*poll)(struct napi_struct *, int);
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| 397 | #ifdef CONFIG_NETPOLL
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| 398 |
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| 399 | int poll_owner;
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| 400 | #endif
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| 401 |
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| 402 | int list_owner;
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| 403 | struct net_device *dev;
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| 404 | struct sk_buff *skb;
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| 405 | struct gro_node gro;
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| 406 | struct hrtimer timer;
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| 407 |
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| 408 | struct task_struct *thread;
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| 409 | unsigned long gro_flush_timeout;
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| 410 | unsigned long irq_suspend_timeout;
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| 411 | u32 defer_hard_irqs;
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| 412 |
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| 413 | u32 napi_id;
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| 414 | struct list_head dev_list;
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| 415 | struct hlist_node napi_hash_node;
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| 416 | int irq;
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| 417 | struct irq_affinity_notify notify;
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| 418 | int napi_rmap_idx;
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| 419 | int index;
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| 420 | struct napi_config *config;
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| 421 | };
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| 422 |
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| 423 | enum {
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| 424 | NAPI_STATE_SCHED,
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| 425 | NAPI_STATE_MISSED,
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| 426 | NAPI_STATE_DISABLE,
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| 427 | NAPI_STATE_NPSVC,
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| 428 | NAPI_STATE_LISTED,
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| 429 | NAPI_STATE_NO_BUSY_POLL,
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| 430 | NAPI_STATE_IN_BUSY_POLL,
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| 431 | NAPI_STATE_PREFER_BUSY_POLL,
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| 432 | NAPI_STATE_THREADED,
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| 433 | NAPI_STATE_SCHED_THREADED,
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| 434 | NAPI_STATE_HAS_NOTIFIER,
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| 435 | NAPI_STATE_THREADED_BUSY_POLL,
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| 436 | };
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| 437 |
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| 438 | enum {
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| 439 | NAPIF_STATE_SCHED = BIT(NAPI_STATE_SCHED),
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| 440 | NAPIF_STATE_MISSED = BIT(NAPI_STATE_MISSED),
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| 441 | NAPIF_STATE_DISABLE = BIT(NAPI_STATE_DISABLE),
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| 442 | NAPIF_STATE_NPSVC = BIT(NAPI_STATE_NPSVC),
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| 443 | NAPIF_STATE_LISTED = BIT(NAPI_STATE_LISTED),
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| 444 | NAPIF_STATE_NO_BUSY_POLL = BIT(NAPI_STATE_NO_BUSY_POLL),
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| 445 | NAPIF_STATE_IN_BUSY_POLL = BIT(NAPI_STATE_IN_BUSY_POLL),
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| 446 | NAPIF_STATE_PREFER_BUSY_POLL = BIT(NAPI_STATE_PREFER_BUSY_POLL),
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| 447 | NAPIF_STATE_THREADED = BIT(NAPI_STATE_THREADED),
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| 448 | NAPIF_STATE_SCHED_THREADED = BIT(NAPI_STATE_SCHED_THREADED),
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| 449 | NAPIF_STATE_HAS_NOTIFIER = BIT(NAPI_STATE_HAS_NOTIFIER),
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| 450 | NAPIF_STATE_THREADED_BUSY_POLL = BIT(NAPI_STATE_THREADED_BUSY_POLL),
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| 451 | };
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| 452 |
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| 453 | enum gro_result {
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| 454 | GRO_MERGED,
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| 455 | GRO_MERGED_FREE,
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| 456 | GRO_HELD,
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| 457 | GRO_NORMAL,
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| 458 | GRO_CONSUMED,
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| 459 | };
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| 460 | typedef enum gro_result gro_result_t;
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| 461 |
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| 462 | |
| 463 | * enum rx_handler_result - Possible return values for rx_handlers.
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| 464 | * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it
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| 465 | * further.
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| 466 | * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in
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| 467 | * case skb->dev was changed by rx_handler.
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| 468 | * @RX_HANDLER_EXACT: Force exact delivery, no wildcard.
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| 469 | * @RX_HANDLER_PASS: Do nothing, pass the skb as if no rx_handler was called.
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| 470 | *
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| 471 | * rx_handlers are functions called from inside __netif_receive_skb(), to do
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| 472 | * special processing of the skb, prior to delivery to protocol handlers.
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| 473 | *
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| 474 | * Currently, a net_device can only have a single rx_handler registered. Trying
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| 475 | * to register a second rx_handler will return -EBUSY.
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| 476 | *
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| 477 | * To register a rx_handler on a net_device, use netdev_rx_handler_register().
|
| 478 | * To unregister a rx_handler on a net_device, use
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| 479 | * netdev_rx_handler_unregister().
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| 480 | *
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| 481 | * Upon return, rx_handler is expected to tell __netif_receive_skb() what to
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| 482 | * do with the skb.
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| 483 | *
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| 484 | * If the rx_handler consumed the skb in some way, it should return
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| 485 | * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for
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| 486 | * the skb to be delivered in some other way.
|
| 487 | *
|
| 488 | * If the rx_handler changed skb->dev, to divert the skb to another
|
| 489 | * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the
|
| 490 | * new device will be called if it exists.
|
| 491 | *
|
| 492 | * If the rx_handler decides the skb should be ignored, it should return
|
| 493 | * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that
|
| 494 | * are registered on exact device (ptype->dev == skb->dev).
|
| 495 | *
|
| 496 | * If the rx_handler didn't change skb->dev, but wants the skb to be normally
|
| 497 | * delivered, it should return RX_HANDLER_PASS.
|
| 498 | *
|
| 499 | * A device without a registered rx_handler will behave as if rx_handler
|
| 500 | * returned RX_HANDLER_PASS.
|
| 501 |
|
| 502 |
|
| 503 | enum rx_handler_result {
|
| 504 | RX_HANDLER_CONSUMED,
|
| 505 | RX_HANDLER_ANOTHER,
|
| 506 | RX_HANDLER_EXACT,
|
| 507 | RX_HANDLER_PASS,
|
| 508 | };
|
| 509 | typedef enum rx_handler_result rx_handler_result_t;
|
| 510 | typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb);
|
| 511 |
|
| 512 | void __napi_schedule(struct napi_struct *n);
|
| 513 | void __napi_schedule_irqoff(struct napi_struct *n);
|
| 514 |
|
| 515 | static inline bool napi_disable_pending(struct napi_struct *n)
|
| 516 | {
|
| 517 | return test_bit(NAPI_STATE_DISABLE, &n->state);
|
| 518 | }
|
| 519 |
|
| 520 | static inline bool napi_prefer_busy_poll(struct napi_struct *n)
|
| 521 | {
|
| 522 | return test_bit(NAPI_STATE_PREFER_BUSY_POLL, &n->state);
|
| 523 | }
|
| 524 |
|
| 525 | |
| 526 | * napi_is_scheduled - test if NAPI is scheduled
|
| 527 | * @n: NAPI context
|
| 528 | *
|
| 529 | * This check is "best-effort". With no locking implemented,
|
| 530 | * a NAPI can be scheduled or terminate right after this check
|
| 531 | * and produce not precise results.
|
| 532 | *
|
| 533 | * NAPI_STATE_SCHED is an internal state, napi_is_scheduled
|
| 534 | * should not be used normally and napi_schedule should be
|
| 535 | * used instead.
|
| 536 | *
|
| 537 | * Use only if the driver really needs to check if a NAPI
|
| 538 | * is scheduled for example in the context of delayed timer
|
| 539 | * that can be skipped if a NAPI is already scheduled.
|
| 540 | *
|
| 541 | * Return: True if NAPI is scheduled, False otherwise.
|
| 542 |
|
| 543 | static inline bool napi_is_scheduled(struct napi_struct *n)
|
| 544 | {
|
| 545 | return test_bit(NAPI_STATE_SCHED, &n->state);
|
| 546 | }
|
| 547 |
|
| 548 | bool napi_schedule_prep(struct napi_struct *n);
|
| 549 |
|
| 550 | |
| 551 | * napi_schedule - schedule NAPI poll
|
| 552 | * @n: NAPI context
|
| 553 | *
|
| 554 | * Schedule NAPI poll routine to be called if it is not already
|
| 555 | * running.
|
| 556 | * Return: true if we schedule a NAPI or false if not.
|
| 557 | * Refer to napi_schedule_prep() for additional reason on why
|
| 558 | * a NAPI might not be scheduled.
|
| 559 |
|
| 560 | static inline bool napi_schedule(struct napi_struct *n)
|
| 561 | {
|
| 562 | if (napi_schedule_prep(n)) {
|
| 563 | __napi_schedule(n);
|
| 564 | return true;
|
| 565 | }
|
| 566 |
|
| 567 | return false;
|
| 568 | }
|
| 569 |
|
| 570 | |
| 571 | * napi_schedule_irqoff - schedule NAPI poll
|
| 572 | * @n: NAPI context
|
| 573 | *
|
| 574 | * Variant of napi_schedule(), assuming hard irqs are masked.
|
| 575 |
|
| 576 | static inline void napi_schedule_irqoff(struct napi_struct *n)
|
| 577 | {
|
| 578 | if (napi_schedule_prep(n))
|
| 579 | __napi_schedule_irqoff(n);
|
| 580 | }
|
| 581 |
|
| 582 | |
| 583 | * napi_complete_done - NAPI processing complete
|
| 584 | * @n: NAPI context
|
| 585 | * @work_done: number of packets processed
|
| 586 | *
|
| 587 | * Mark NAPI processing as complete. Should only be called if poll budget
|
| 588 | * has not been completely consumed.
|
| 589 | * Prefer over napi_complete().
|
| 590 | * Return: false if device should avoid rearming interrupts.
|
| 591 |
|
| 592 | bool napi_complete_done(struct napi_struct *n, int work_done);
|
| 593 |
|
| 594 | static inline bool napi_complete(struct napi_struct *n)
|
| 595 | {
|
| 596 | return napi_complete_done(n, 0);
|
| 597 | }
|
| 598 |
|
| 599 | void netif_threaded_enable(struct net_device *dev);
|
| 600 | int dev_set_threaded(struct net_device *dev,
|
| 601 | enum netdev_napi_threaded threaded);
|
| 602 |
|
| 603 | void napi_disable(struct napi_struct *n);
|
| 604 | void napi_disable_locked(struct napi_struct *n);
|
| 605 |
|
| 606 | void napi_enable(struct napi_struct *n);
|
| 607 | void napi_enable_locked(struct napi_struct *n);
|
| 608 |
|
| 609 | |
| 610 | * napi_synchronize - wait until NAPI is not running
|
| 611 | * @n: NAPI context
|
| 612 | *
|
| 613 | * Wait until NAPI is done being scheduled on this context.
|
| 614 | * Waits till any outstanding processing completes but
|
| 615 | * does not disable future activations.
|
| 616 |
|
| 617 | static inline void napi_synchronize(const struct napi_struct *n)
|
| 618 | {
|
| 619 | if (IS_ENABLED(CONFIG_SMP))
|
| 620 | while (test_bit(NAPI_STATE_SCHED, &n->state))
|
| 621 | msleep(1);
|
| 622 | else
|
| 623 | barrier();
|
| 624 | }
|
| 625 |
|
| 626 | |
| 627 | * napi_if_scheduled_mark_missed - if napi is running, set the
|
| 628 | * NAPIF_STATE_MISSED
|
| 629 | * @n: NAPI context
|
| 630 | *
|
| 631 | * If napi is running, set the NAPIF_STATE_MISSED, and return true if
|
| 632 | * NAPI is scheduled.
|
| 633 | *
|
| 634 | static inline bool napi_if_scheduled_mark_missed(struct napi_struct *n)
|
| 635 | {
|
| 636 | unsigned long val, new;
|
| 637 |
|
| 638 | val = READ_ONCE(n->state);
|
| 639 | do {
|
| 640 | if (val & NAPIF_STATE_DISABLE)
|
| 641 | return true;
|
| 642 |
|
| 643 | if (!(val & NAPIF_STATE_SCHED))
|
| 644 | return false;
|
| 645 |
|
| 646 | new = val | NAPIF_STATE_MISSED;
|
| 647 | } while (!try_cmpxchg(&n->state, &val, new));
|
| 648 |
|
| 649 | return true;
|
| 650 | }
|
| 651 |
|
| 652 | enum netdev_queue_state_t {
|
| 653 | __QUEUE_STATE_DRV_XOFF,
|
| 654 | __QUEUE_STATE_STACK_XOFF,
|
| 655 | __QUEUE_STATE_FROZEN,
|
| 656 | };
|
| 657 |
|
| 658 | #define QUEUE_STATE_DRV_XOFF (1 << __QUEUE_STATE_DRV_XOFF)
|
| 659 | #define QUEUE_STATE_STACK_XOFF (1 << __QUEUE_STATE_STACK_XOFF)
|
| 660 | #define QUEUE_STATE_FROZEN (1 << __QUEUE_STATE_FROZEN)
|
| 661 |
|
| 662 | #define QUEUE_STATE_ANY_XOFF (QUEUE_STATE_DRV_XOFF | QUEUE_STATE_STACK_XOFF)
|
| 663 | #define QUEUE_STATE_ANY_XOFF_OR_FROZEN (QUEUE_STATE_ANY_XOFF | \
|
| 664 | QUEUE_STATE_FROZEN)
|
| 665 | #define QUEUE_STATE_DRV_XOFF_OR_FROZEN (QUEUE_STATE_DRV_XOFF | \
|
| 666 | QUEUE_STATE_FROZEN)
|
| 667 |
|
| 668 | |
| 669 | * __QUEUE_STATE_DRV_XOFF is used by drivers to stop the transmit queue. The
|
| 670 | * netif_tx_* functions below are used to manipulate this flag. The
|
| 671 | * __QUEUE_STATE_STACK_XOFF flag is used by the stack to stop the transmit
|
| 672 | * queue independently. The netif_xmit_*stopped functions below are called
|
| 673 | * to check if the queue has been stopped by the driver or stack (either
|
| 674 | * of the XOFF bits are set in the state). Drivers should not need to call
|
| 675 | * netif_xmit*stopped functions, they should only be using netif_tx_*.
|
| 676 |
|
| 677 |
|
| 678 | struct netdev_queue {
|
| 679 | |
| 680 | * read-mostly part
|
| 681 |
|
| 682 | struct net_device *dev;
|
| 683 | netdevice_tracker dev_tracker;
|
| 684 |
|
| 685 | struct Qdisc __rcu *qdisc;
|
| 686 | struct Qdisc __rcu *qdisc_sleeping;
|
| 687 | #ifdef CONFIG_SYSFS
|
| 688 | struct kobject kobj;
|
| 689 | const struct attribute_group **groups;
|
| 690 | #endif
|
| 691 | unsigned long tx_maxrate;
|
| 692 | |
| 693 | * Number of TX timeouts for this queue
|
| 694 | * (/sys/class/net/DEV/Q/trans_timeout)
|
| 695 |
|
| 696 | atomic_long_t trans_timeout;
|
| 697 |
|
| 698 |
|
| 699 | struct net_device *sb_dev;
|
| 700 | #ifdef CONFIG_XDP_SOCKETS
|
| 701 |
|
| 702 | struct xsk_buff_pool *pool;
|
| 703 | #endif
|
| 704 |
|
| 705 | |
| 706 | * write-mostly part
|
| 707 |
|
| 708 | #ifdef CONFIG_BQL
|
| 709 | struct dql dql;
|
| 710 | #endif
|
| 711 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp;
|
| 712 | int xmit_lock_owner;
|
| 713 | |
| 714 | * Time (in jiffies) of last Tx
|
| 715 |
|
| 716 | unsigned long trans_start;
|
| 717 |
|
| 718 | unsigned long state;
|
| 719 |
|
| 720 | |
| 721 | * slow- / control-path part
|
| 722 |
|
| 723 | |
| 724 | * "ops protected", see comment about net_device::lock
|
| 725 |
|
| 726 | struct napi_struct *napi;
|
| 727 |
|
| 728 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA)
|
| 729 | int numa_node;
|
| 730 | #endif
|
| 731 | } ____cacheline_aligned_in_smp;
|
| 732 |
|
| 733 | extern int sysctl_fb_tunnels_only_for_init_net;
|
| 734 | extern int sysctl_devconf_inherit_init_net;
|
| 735 |
|
| 736 | |
| 737 | * sysctl_fb_tunnels_only_for_init_net == 0 : For all netns
|
| 738 | * == 1 : For initns only
|
| 739 | * == 2 : For none.
|
| 740 |
|
| 741 | static inline bool net_has_fallback_tunnels(const struct net *net)
|
| 742 | {
|
| 743 | #if IS_ENABLED(CONFIG_SYSCTL)
|
| 744 | int fb_tunnels_only_for_init_net = READ_ONCE(sysctl_fb_tunnels_only_for_init_net);
|
| 745 |
|
| 746 | return !fb_tunnels_only_for_init_net ||
|
| 747 | (net_eq(net, &init_net) && fb_tunnels_only_for_init_net == 1);
|
| 748 | #else
|
| 749 | return true;
|
| 750 | #endif
|
| 751 | }
|
| 752 |
|
| 753 | static inline int net_inherit_devconf(void)
|
| 754 | {
|
| 755 | #if IS_ENABLED(CONFIG_SYSCTL)
|
| 756 | return READ_ONCE(sysctl_devconf_inherit_init_net);
|
| 757 | #else
|
| 758 | return 0;
|
| 759 | #endif
|
| 760 | }
|
| 761 |
|
| 762 | static inline int netdev_queue_numa_node_read(const struct netdev_queue *q)
|
| 763 | {
|
| 764 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA)
|
| 765 | return q->numa_node;
|
| 766 | #else
|
| 767 | return NUMA_NO_NODE;
|
| 768 | #endif
|
| 769 | }
|
| 770 |
|
| 771 | static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node)
|
| 772 | {
|
| 773 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA)
|
| 774 | q->numa_node = node;
|
| 775 | #endif
|
| 776 | }
|
| 777 |
|
| 778 | #ifdef CONFIG_RFS_ACCEL
|
| 779 | bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, u32 flow_id,
|
| 780 | u16 filter_id);
|
| 781 | #endif
|
| 782 |
|
| 783 |
|
| 784 | enum xps_map_type {
|
| 785 | XPS_CPUS = 0,
|
| 786 | XPS_RXQS,
|
| 787 | XPS_MAPS_MAX,
|
| 788 | };
|
| 789 |
|
| 790 | #ifdef CONFIG_XPS
|
| 791 | |
| 792 | * This structure holds an XPS map which can be of variable length. The
|
| 793 | * map is an array of queues.
|
| 794 |
|
| 795 | struct xps_map {
|
| 796 | unsigned int len;
|
| 797 | unsigned int alloc_len;
|
| 798 | struct rcu_head rcu;
|
| 799 | u16 queues[];
|
| 800 | };
|
| 801 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + ((_num) * sizeof(u16)))
|
| 802 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_ALIGN(offsetof(struct xps_map, queues[1])) \
|
| 803 | - sizeof(struct xps_map)) / sizeof(u16))
|
| 804 |
|
| 805 | |
| 806 | * This structure holds all XPS maps for device. Maps are indexed by CPU.
|
| 807 | *
|
| 808 | * We keep track of the number of cpus/rxqs used when the struct is allocated,
|
| 809 | * in nr_ids. This will help not accessing out-of-bound memory.
|
| 810 | *
|
| 811 | * We keep track of the number of traffic classes used when the struct is
|
| 812 | * allocated, in num_tc. This will be used to navigate the maps, to ensure we're
|
| 813 | * not crossing its upper bound, as the original dev->num_tc can be updated in
|
| 814 | * the meantime.
|
| 815 |
|
| 816 | struct xps_dev_maps {
|
| 817 | struct rcu_head rcu;
|
| 818 | unsigned int nr_ids;
|
| 819 | s16 num_tc;
|
| 820 | struct xps_map __rcu *attr_map[];
|
| 821 | };
|
| 822 |
|
| 823 | #define XPS_CPU_DEV_MAPS_SIZE(_tcs) (sizeof(struct xps_dev_maps) + \
|
| 824 | (nr_cpu_ids * (_tcs) * sizeof(struct xps_map *)))
|
| 825 |
|
| 826 | #define XPS_RXQ_DEV_MAPS_SIZE(_tcs, _rxqs) (sizeof(struct xps_dev_maps) +\
|
| 827 | (_rxqs * (_tcs) * sizeof(struct xps_map *)))
|
| 828 |
|
| 829 | #endif
|
| 830 |
|
| 831 | #define TC_MAX_QUEUE 16
|
| 832 | #define TC_BITMASK 15
|
| 833 |
|
| 834 | struct netdev_tc_txq {
|
| 835 | union {
|
| 836 | struct {
|
| 837 | u16 count;
|
| 838 | u16 offset;
|
| 839 | };
|
| 840 | u32 combined;
|
| 841 | };
|
| 842 | };
|
| 843 |
|
| 844 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
|
| 845 | |
| 846 | * This structure is to hold information about the device
|
| 847 | * configured to run FCoE protocol stack.
|
| 848 |
|
| 849 | struct netdev_fcoe_hbainfo {
|
| 850 | char manufacturer[64];
|
| 851 | char serial_number[64];
|
| 852 | char hardware_version[64];
|
| 853 | char driver_version[64];
|
| 854 | char optionrom_version[64];
|
| 855 | char firmware_version[64];
|
| 856 | char model[256];
|
| 857 | char model_description[256];
|
| 858 | };
|
| 859 | #endif
|
| 860 |
|
| 861 | #define MAX_PHYS_ITEM_ID_LEN 32
|
| 862 |
|
| 863 | |
| 864 | * physical item (port for example) used by a netdevice.
|
| 865 |
|
| 866 | struct netdev_phys_item_id {
|
| 867 | unsigned char id[MAX_PHYS_ITEM_ID_LEN];
|
| 868 | unsigned char id_len;
|
| 869 | };
|
| 870 |
|
| 871 | static inline bool netdev_phys_item_id_same(struct netdev_phys_item_id *a,
|
| 872 | struct netdev_phys_item_id *b)
|
| 873 | {
|
| 874 | return a->id_len == b->id_len &&
|
| 875 | memcmp(a->id, b->id, a->id_len) == 0;
|
| 876 | }
|
| 877 |
|
| 878 | typedef u16 (*select_queue_fallback_t)(struct net_device *dev,
|
| 879 | struct sk_buff *skb,
|
| 880 | struct net_device *sb_dev);
|
| 881 |
|
| 882 | enum net_device_path_type {
|
| 883 | DEV_PATH_ETHERNET = 0,
|
| 884 | DEV_PATH_VLAN,
|
| 885 | DEV_PATH_BRIDGE,
|
| 886 | DEV_PATH_PPPOE,
|
| 887 | DEV_PATH_DSA,
|
| 888 | DEV_PATH_MTK_WDMA,
|
| 889 | DEV_PATH_TUN,
|
| 890 | DEV_PATH_IEEE80211,
|
| 891 | };
|
| 892 |
|
| 893 | struct net_device_path {
|
| 894 | enum net_device_path_type type;
|
| 895 | const struct net_device *dev;
|
| 896 | union {
|
| 897 | struct {
|
| 898 | u16 id;
|
| 899 | __be16 proto;
|
| 900 | u8 h_dest[ETH_ALEN];
|
| 901 | } encap;
|
| 902 | struct {
|
| 903 | struct dst_entry *dst;
|
| 904 | union {
|
| 905 | struct in_addr src_v4;
|
| 906 | struct in6_addr src_v6;
|
| 907 | };
|
| 908 | union {
|
| 909 | struct in_addr dst_v4;
|
| 910 | struct in6_addr dst_v6;
|
| 911 | };
|
| 912 |
|
| 913 | u8 inner_proto;
|
| 914 | } tun;
|
| 915 | struct {
|
| 916 | enum {
|
| 917 | DEV_PATH_BR_VLAN_KEEP,
|
| 918 | DEV_PATH_BR_VLAN_TAG,
|
| 919 | DEV_PATH_BR_VLAN_UNTAG,
|
| 920 | DEV_PATH_BR_VLAN_UNTAG_HW,
|
| 921 | } vlan_mode;
|
| 922 | u16 vlan_id;
|
| 923 | __be16 vlan_proto;
|
| 924 | } bridge;
|
| 925 | struct {
|
| 926 | int port;
|
| 927 | u16 proto;
|
| 928 | } dsa;
|
| 929 | struct {
|
| 930 | u8 wdma_idx;
|
| 931 | u8 queue;
|
| 932 | u16 wcid;
|
| 933 | u8 bss;
|
| 934 | u8 amsdu;
|
| 935 | } mtk_wdma;
|
| 936 | };
|
| 937 | };
|
| 938 |
|
| 939 | #define NET_DEVICE_PATH_STACK_MAX 5
|
| 940 | #define NET_DEVICE_PATH_VLAN_MAX 2
|
| 941 |
|
| 942 | struct net_device_path_stack {
|
| 943 | int num_paths;
|
| 944 | struct net_device_path path[NET_DEVICE_PATH_STACK_MAX];
|
| 945 | };
|
| 946 |
|
| 947 | struct net_device_path_ctx {
|
| 948 | const struct net_device *dev;
|
| 949 | u8 daddr[ETH_ALEN];
|
| 950 | __be16 ether_type;
|
| 951 |
|
| 952 | int num_vlans;
|
| 953 | struct {
|
| 954 | u16 id;
|
| 955 | __be16 proto;
|
| 956 | } vlan[NET_DEVICE_PATH_VLAN_MAX];
|
| 957 |
|
| 958 | bool ieee80211;
|
| 959 | };
|
| 960 |
|
| 961 | enum tc_setup_type {
|
| 962 | TC_QUERY_CAPS,
|
| 963 | TC_SETUP_QDISC_MQPRIO,
|
| 964 | TC_SETUP_CLSU32,
|
| 965 | TC_SETUP_CLSFLOWER,
|
| 966 | TC_SETUP_CLSMATCHALL,
|
| 967 | TC_SETUP_CLSBPF,
|
| 968 | TC_SETUP_BLOCK,
|
| 969 | TC_SETUP_QDISC_CBS,
|
| 970 | TC_SETUP_QDISC_RED,
|
| 971 | TC_SETUP_QDISC_PRIO,
|
| 972 | TC_SETUP_QDISC_MQ,
|
| 973 | TC_SETUP_QDISC_ETF,
|
| 974 | TC_SETUP_ROOT_QDISC,
|
| 975 | TC_SETUP_QDISC_GRED,
|
| 976 | TC_SETUP_QDISC_TAPRIO,
|
| 977 | TC_SETUP_FT,
|
| 978 | TC_SETUP_QDISC_ETS,
|
| 979 | TC_SETUP_QDISC_TBF,
|
| 980 | TC_SETUP_QDISC_FIFO,
|
| 981 | TC_SETUP_QDISC_HTB,
|
| 982 | TC_SETUP_ACT,
|
| 983 | };
|
| 984 |
|
| 985 | |
| 986 | * to the netdevice through the bpf op.
|
| 987 |
|
| 988 | enum bpf_netdev_command {
|
| 989 | |
| 990 | * rx. The prog will have been loaded as BPF_PROG_TYPE_XDP. The callee
|
| 991 | * is responsible for calling bpf_prog_put on any old progs that are
|
| 992 | * stored. In case of error, the callee need not release the new prog
|
| 993 | * reference, but on success it takes ownership and must bpf_prog_put
|
| 994 | * when it is no longer used.
|
| 995 |
|
| 996 | XDP_SETUP_PROG,
|
| 997 | XDP_SETUP_PROG_HW,
|
| 998 |
|
| 999 | BPF_OFFLOAD_MAP_ALLOC,
|
| 1000 | BPF_OFFLOAD_MAP_FREE,
|
| 1001 | XDP_SETUP_XSK_POOL,
|
| 1002 | };
|
| 1003 |
|
| 1004 | struct bpf_prog_offload_ops;
|
| 1005 | struct netlink_ext_ack;
|
| 1006 | struct xdp_umem;
|
| 1007 | struct xdp_dev_bulk_queue;
|
| 1008 | struct bpf_xdp_link;
|
| 1009 |
|
| 1010 | enum bpf_xdp_mode {
|
| 1011 | XDP_MODE_SKB = 0,
|
| 1012 | XDP_MODE_DRV = 1,
|
| 1013 | XDP_MODE_HW = 2,
|
| 1014 | __MAX_XDP_MODE
|
| 1015 | };
|
| 1016 |
|
| 1017 | struct bpf_xdp_entity {
|
| 1018 | struct bpf_prog *prog;
|
| 1019 | struct bpf_xdp_link *link;
|
| 1020 | };
|
| 1021 |
|
| 1022 | struct netdev_bpf {
|
| 1023 | enum bpf_netdev_command command;
|
| 1024 | union {
|
| 1025 |
|
| 1026 | struct {
|
| 1027 | u32 flags;
|
| 1028 | struct bpf_prog *prog;
|
| 1029 | struct netlink_ext_ack *extack;
|
| 1030 | };
|
| 1031 |
|
| 1032 | struct {
|
| 1033 | struct bpf_offloaded_map *offmap;
|
| 1034 | };
|
| 1035 |
|
| 1036 | struct {
|
| 1037 | struct xsk_buff_pool *pool;
|
| 1038 | u16 queue_id;
|
| 1039 | } xsk;
|
| 1040 | };
|
| 1041 | };
|
| 1042 |
|
| 1043 |
|
| 1044 | #define XDP_WAKEUP_RX (1 << 0)
|
| 1045 | #define XDP_WAKEUP_TX (1 << 1)
|
| 1046 |
|
| 1047 | #ifdef CONFIG_XFRM_OFFLOAD
|
| 1048 | struct xfrmdev_ops {
|
| 1049 | int (*xdo_dev_state_add)(struct net_device *dev,
|
| 1050 | struct xfrm_state *x,
|
| 1051 | struct netlink_ext_ack *extack);
|
| 1052 | void (*xdo_dev_state_delete)(struct net_device *dev,
|
| 1053 | struct xfrm_state *x);
|
| 1054 | void (*xdo_dev_state_free)(struct net_device *dev,
|
| 1055 | struct xfrm_state *x);
|
| 1056 | bool (*xdo_dev_offload_ok) (struct sk_buff *skb,
|
| 1057 | struct xfrm_state *x);
|
| 1058 | void (*xdo_dev_state_advance_esn) (struct xfrm_state *x);
|
| 1059 | void (*xdo_dev_state_update_stats) (struct xfrm_state *x);
|
| 1060 | int (*xdo_dev_policy_add) (struct xfrm_policy *x, struct netlink_ext_ack *extack);
|
| 1061 | void (*xdo_dev_policy_delete) (struct xfrm_policy *x);
|
| 1062 | void (*xdo_dev_policy_free) (struct xfrm_policy *x);
|
| 1063 | };
|
| 1064 | #endif
|
| 1065 |
|
| 1066 | struct dev_ifalias {
|
| 1067 | struct rcu_head rcuhead;
|
| 1068 | char ifalias[];
|
| 1069 | };
|
| 1070 |
|
| 1071 | struct devlink;
|
| 1072 | struct tlsdev_ops;
|
| 1073 |
|
| 1074 | struct netdev_net_notifier {
|
| 1075 | struct list_head list;
|
| 1076 | struct notifier_block *nb;
|
| 1077 | };
|
| 1078 |
|
| 1079 | |
| 1080 | * This structure defines the management hooks for network devices.
|
| 1081 | * The following hooks can be defined; unless noted otherwise, they are
|
| 1082 | * optional and can be filled with a null pointer.
|
| 1083 | *
|
| 1084 | * int (*ndo_init)(struct net_device *dev);
|
| 1085 | * This function is called once when a network device is registered.
|
| 1086 | * The network device can use this for any late stage initialization
|
| 1087 | * or semantic validation. It can fail with an error code which will
|
| 1088 | * be propagated back to register_netdev.
|
| 1089 | *
|
| 1090 | * void (*ndo_uninit)(struct net_device *dev);
|
| 1091 | * This function is called when device is unregistered or when registration
|
| 1092 | * fails. It is not called if init fails.
|
| 1093 | *
|
| 1094 | * int (*ndo_open)(struct net_device *dev);
|
| 1095 | * This function is called when a network device transitions to the up
|
| 1096 | * state.
|
| 1097 | *
|
| 1098 | * int (*ndo_stop)(struct net_device *dev);
|
| 1099 | * This function is called when a network device transitions to the down
|
| 1100 | * state.
|
| 1101 | *
|
| 1102 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb,
|
| 1103 | * struct net_device *dev);
|
| 1104 | * Called when a packet needs to be transmitted.
|
| 1105 | * Returns NETDEV_TX_OK. Can return NETDEV_TX_BUSY, but you should stop
|
| 1106 | * the queue before that can happen; it's for obsolete devices and weird
|
| 1107 | * corner cases, but the stack really does a non-trivial amount
|
| 1108 | * of useless work if you return NETDEV_TX_BUSY.
|
| 1109 | * Required; cannot be NULL.
|
| 1110 | *
|
| 1111 | * netdev_features_t (*ndo_features_check)(struct sk_buff *skb,
|
| 1112 | * struct net_device *dev
|
| 1113 | * netdev_features_t features);
|
| 1114 | * Called by core transmit path to determine if device is capable of
|
| 1115 | * performing offload operations on a given packet. This is to give
|
| 1116 | * the device an opportunity to implement any restrictions that cannot
|
| 1117 | * be otherwise expressed by feature flags. The check is called with
|
| 1118 | * the set of features that the stack has calculated and it returns
|
| 1119 | * those the driver believes to be appropriate.
|
| 1120 | *
|
| 1121 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb,
|
| 1122 | * struct net_device *sb_dev);
|
| 1123 | * Called to decide which queue to use when device supports multiple
|
| 1124 | * transmit queues.
|
| 1125 | *
|
| 1126 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags);
|
| 1127 | * This function is called to allow device receiver to make
|
| 1128 | * changes to configuration when multicast or promiscuous is enabled.
|
| 1129 | *
|
| 1130 | * void (*ndo_set_rx_mode)(struct net_device *dev);
|
| 1131 | * This function is called device changes address list filtering.
|
| 1132 | * If driver handles unicast address filtering, it should set
|
| 1133 | * IFF_UNICAST_FLT in its priv_flags.
|
| 1134 | * Cannot sleep, called with netif_addr_lock_bh held.
|
| 1135 | * Deprecated in favor of ndo_set_rx_mode_async.
|
| 1136 | *
|
| 1137 | * int (*ndo_set_rx_mode_async)(struct net_device *dev,
|
| 1138 | * struct netdev_hw_addr_list *uc,
|
| 1139 | * struct netdev_hw_addr_list *mc);
|
| 1140 | * Async version of ndo_set_rx_mode which runs in process context
|
| 1141 | * with rtnl_lock and netdev_lock_ops(dev) held. The uc/mc parameters
|
| 1142 | * are snapshots of the address lists - iterate with
|
| 1143 | * netdev_hw_addr_list_for_each(ha, uc). Return 0 on success or a
|
| 1144 | * negative errno to request a retry via the core backoff.
|
| 1145 | *
|
| 1146 | * void (*ndo_work)(struct net_device *dev, unsigned long events);
|
| 1147 | * Run deferred work scheduled with netdev_work_sched(@events).
|
| 1148 | *
|
| 1149 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr);
|
| 1150 | * This function is called when the Media Access Control address
|
| 1151 | * needs to be changed. If this interface is not defined, the
|
| 1152 | * MAC address can not be changed.
|
| 1153 | *
|
| 1154 | * int (*ndo_validate_addr)(struct net_device *dev);
|
| 1155 | * Test if Media Access Control address is valid for the device.
|
| 1156 | *
|
| 1157 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
|
| 1158 | * Old-style ioctl entry point. This is used internally by the
|
| 1159 | * ieee802154 subsystem but is no longer called by the device
|
| 1160 | * ioctl handler.
|
| 1161 | *
|
| 1162 | * int (*ndo_siocbond)(struct net_device *dev, struct ifreq *ifr, int cmd);
|
| 1163 | * Used by the bonding driver for its device specific ioctls:
|
| 1164 | * SIOCBONDENSLAVE, SIOCBONDRELEASE, SIOCBONDSETHWADDR, SIOCBONDCHANGEACTIVE,
|
| 1165 | * SIOCBONDSLAVEINFOQUERY, and SIOCBONDINFOQUERY
|
| 1166 | *
|
| 1167 | * * int (*ndo_eth_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
|
| 1168 | * Called for ethernet specific ioctls: SIOCGMIIPHY, SIOCGMIIREG and
|
| 1169 | * SIOCSMIIREG.
|
| 1170 | *
|
| 1171 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map);
|
| 1172 | * Used to set network devices bus interface parameters. This interface
|
| 1173 | * is retained for legacy reasons; new devices should use the bus
|
| 1174 | * interface (PCI) for low level management.
|
| 1175 | *
|
| 1176 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu);
|
| 1177 | * Called when a user wants to change the Maximum Transfer Unit
|
| 1178 | * of a device.
|
| 1179 | *
|
| 1180 | * void (*ndo_tx_timeout)(struct net_device *dev, unsigned int txqueue);
|
| 1181 | * Callback used when the transmitter has not made any progress
|
| 1182 | * for dev->watchdog ticks.
|
| 1183 | *
|
| 1184 | * void (*ndo_get_stats64)(struct net_device *dev,
|
| 1185 | * struct rtnl_link_stats64 *storage);
|
| 1186 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
|
| 1187 | * Called when a user wants to get the network device usage
|
| 1188 | * statistics. Drivers must do one of the following:
|
| 1189 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised
|
| 1190 | * rtnl_link_stats64 structure passed by the caller.
|
| 1191 | * 2. Define @ndo_get_stats to update a net_device_stats structure
|
| 1192 | * (which should normally be dev->stats) and return a pointer to
|
| 1193 | * it. The structure may be changed asynchronously only if each
|
| 1194 | * field is written atomically.
|
| 1195 | * 3. Update dev->stats asynchronously and atomically, and define
|
| 1196 | * neither operation.
|
| 1197 | *
|
| 1198 | * bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id)
|
| 1199 | * Return true if this device supports offload stats of this attr_id.
|
| 1200 | *
|
| 1201 | * int (*ndo_get_offload_stats)(int attr_id, const struct net_device *dev,
|
| 1202 | * void *attr_data)
|
| 1203 | * Get statistics for offload operations by attr_id. Write it into the
|
| 1204 | * attr_data pointer.
|
| 1205 | *
|
| 1206 | * int (*ndo_vlan_rx_add_vid)(struct net_device *dev, __be16 proto, u16 vid);
|
| 1207 | * If device supports VLAN filtering this function is called when a
|
| 1208 | * VLAN id is registered.
|
| 1209 | *
|
| 1210 | * int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, __be16 proto, u16 vid);
|
| 1211 | * If device supports VLAN filtering this function is called when a
|
| 1212 | * VLAN id is unregistered.
|
| 1213 | *
|
| 1214 | * void (*ndo_poll_controller)(struct net_device *dev);
|
| 1215 | *
|
| 1216 | * SR-IOV management functions.
|
| 1217 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac);
|
| 1218 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan,
|
| 1219 | * u8 qos, __be16 proto);
|
| 1220 | * int (*ndo_set_vf_rate)(struct net_device *dev, int vf, int min_tx_rate,
|
| 1221 | * int max_tx_rate);
|
| 1222 | * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting);
|
| 1223 | * int (*ndo_set_vf_trust)(struct net_device *dev, int vf, bool setting);
|
| 1224 | * int (*ndo_get_vf_config)(struct net_device *dev,
|
| 1225 | * int vf, struct ifla_vf_info *ivf);
|
| 1226 | * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state);
|
| 1227 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf,
|
| 1228 | * struct nlattr *port[]);
|
| 1229 | *
|
| 1230 | * Enable or disable the VF ability to query its RSS Redirection Table and
|
| 1231 | * Hash Key. This is needed since on some devices VF share this information
|
| 1232 | * with PF and querying it may introduce a theoretical security risk.
|
| 1233 | * int (*ndo_set_vf_rss_query_en)(struct net_device *dev, int vf, bool setting);
|
| 1234 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb);
|
| 1235 | * int (*ndo_setup_tc)(struct net_device *dev, enum tc_setup_type type,
|
| 1236 | * void *type_data);
|
| 1237 | * Called to setup any 'tc' scheduler, classifier or action on @dev.
|
| 1238 | * This is always called from the stack with the rtnl lock held and netif
|
| 1239 | * tx queues stopped. This allows the netdevice to perform queue
|
| 1240 | * management safely.
|
| 1241 | *
|
| 1242 | * NB: Returning -EOPNOTSUPP for whatever commands means "this qdisc
|
| 1243 | * is not offloaded (anymore, offloading may have silently stopped)",
|
| 1244 | * and the offloading flag is cleared. Notably, this is also true for
|
| 1245 | * dump queries (e.g. TC_*_STATS commands). If the underlying device does
|
| 1246 | * not report any statistics but is still offloading, return 0 instead.
|
| 1247 | *
|
| 1248 | * Fiber Channel over Ethernet (FCoE) offload functions.
|
| 1249 | * int (*ndo_fcoe_enable)(struct net_device *dev);
|
| 1250 | * Called when the FCoE protocol stack wants to start using LLD for FCoE
|
| 1251 | * so the underlying device can perform whatever needed configuration or
|
| 1252 | * initialization to support acceleration of FCoE traffic.
|
| 1253 | *
|
| 1254 | * int (*ndo_fcoe_disable)(struct net_device *dev);
|
| 1255 | * Called when the FCoE protocol stack wants to stop using LLD for FCoE
|
| 1256 | * so the underlying device can perform whatever needed clean-ups to
|
| 1257 | * stop supporting acceleration of FCoE traffic.
|
| 1258 | *
|
| 1259 | * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid,
|
| 1260 | * struct scatterlist *sgl, unsigned int sgc);
|
| 1261 | * Called when the FCoE Initiator wants to initialize an I/O that
|
| 1262 | * is a possible candidate for Direct Data Placement (DDP). The LLD can
|
| 1263 | * perform necessary setup and returns 1 to indicate the device is set up
|
| 1264 | * successfully to perform DDP on this I/O, otherwise this returns 0.
|
| 1265 | *
|
| 1266 | * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid);
|
| 1267 | * Called when the FCoE Initiator/Target is done with the DDPed I/O as
|
| 1268 | * indicated by the FC exchange id 'xid', so the underlying device can
|
| 1269 | * clean up and reuse resources for later DDP requests.
|
| 1270 | *
|
| 1271 | * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid,
|
| 1272 | * struct scatterlist *sgl, unsigned int sgc);
|
| 1273 | * Called when the FCoE Target wants to initialize an I/O that
|
| 1274 | * is a possible candidate for Direct Data Placement (DDP). The LLD can
|
| 1275 | * perform necessary setup and returns 1 to indicate the device is set up
|
| 1276 | * successfully to perform DDP on this I/O, otherwise this returns 0.
|
| 1277 | *
|
| 1278 | * int (*ndo_fcoe_get_hbainfo)(struct net_device *dev,
|
| 1279 | * struct netdev_fcoe_hbainfo *hbainfo);
|
| 1280 | * Called when the FCoE Protocol stack wants information on the underlying
|
| 1281 | * device. This information is utilized by the FCoE protocol stack to
|
| 1282 | * register attributes with Fiber Channel management service as per the
|
| 1283 | * FC-GS Fabric Device Management Information(FDMI) specification.
|
| 1284 | *
|
| 1285 | * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type);
|
| 1286 | * Called when the underlying device wants to override default World Wide
|
| 1287 | * Name (WWN) generation mechanism in FCoE protocol stack to pass its own
|
| 1288 | * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE
|
| 1289 | * protocol stack to use.
|
| 1290 | *
|
| 1291 | * RFS acceleration.
|
| 1292 | * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb,
|
| 1293 | * u16 rxq_index, u32 flow_id);
|
| 1294 | * Set hardware filter for RFS. rxq_index is the target queue index;
|
| 1295 | * flow_id is a flow ID to be passed to rps_may_expire_flow() later.
|
| 1296 | * Return the filter ID on success, or a negative error code.
|
| 1297 | *
|
| 1298 | * Slave management functions (for bridge, bonding, etc).
|
| 1299 | * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev);
|
| 1300 | * Called to make another netdev an underling.
|
| 1301 | *
|
| 1302 | * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev);
|
| 1303 | * Called to release previously enslaved netdev.
|
| 1304 | *
|
| 1305 | * struct net_device *(*ndo_get_xmit_slave)(struct net_device *dev,
|
| 1306 | * struct sk_buff *skb,
|
| 1307 | * bool all_slaves);
|
| 1308 | * Get the xmit slave of master device. If all_slaves is true, function
|
| 1309 | * assume all the slaves can transmit.
|
| 1310 | *
|
| 1311 | * Feature/offload setting functions.
|
| 1312 | * netdev_features_t (*ndo_fix_features)(struct net_device *dev,
|
| 1313 | * netdev_features_t features);
|
| 1314 | * Adjusts the requested feature flags according to device-specific
|
| 1315 | * constraints, and returns the resulting flags. Must not modify
|
| 1316 | * the device state.
|
| 1317 | *
|
| 1318 | * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features);
|
| 1319 | * Called to update device configuration to new features. Passed
|
| 1320 | * feature set might be less than what was returned by ndo_fix_features()).
|
| 1321 | * Must return >0 or -errno if it changed dev->features itself.
|
| 1322 | *
|
| 1323 | * int (*ndo_fdb_add)(struct ndmsg *ndm, struct nlattr *tb[],
|
| 1324 | * struct net_device *dev,
|
| 1325 | * const unsigned char *addr, u16 vid, u16 flags,
|
| 1326 | * bool *notified, struct netlink_ext_ack *extack);
|
| 1327 | * Adds an FDB entry to dev for addr.
|
| 1328 | * Callee shall set *notified to true if it sent any appropriate
|
| 1329 | * notification(s). Otherwise core will send a generic one.
|
| 1330 | * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[],
|
| 1331 | * struct net_device *dev,
|
| 1332 | * const unsigned char *addr, u16 vid
|
| 1333 | * bool *notified, struct netlink_ext_ack *extack);
|
| 1334 | * Deletes the FDB entry from dev corresponding to addr.
|
| 1335 | * Callee shall set *notified to true if it sent any appropriate
|
| 1336 | * notification(s). Otherwise core will send a generic one.
|
| 1337 | * int (*ndo_fdb_del_bulk)(struct nlmsghdr *nlh, struct net_device *dev,
|
| 1338 | * struct netlink_ext_ack *extack);
|
| 1339 | * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb,
|
| 1340 | * struct net_device *dev, struct net_device *filter_dev,
|
| 1341 | * int *idx)
|
| 1342 | * Used to add FDB entries to dump requests. Implementers should add
|
| 1343 | * entries to skb and update idx with the number of entries.
|
| 1344 | *
|
| 1345 | * int (*ndo_mdb_add)(struct net_device *dev, struct nlattr *tb[],
|
| 1346 | * u16 nlmsg_flags, struct netlink_ext_ack *extack);
|
| 1347 | * Adds an MDB entry to dev.
|
| 1348 | * int (*ndo_mdb_del)(struct net_device *dev, struct nlattr *tb[],
|
| 1349 | * struct netlink_ext_ack *extack);
|
| 1350 | * Deletes the MDB entry from dev.
|
| 1351 | * int (*ndo_mdb_del_bulk)(struct net_device *dev, struct nlattr *tb[],
|
| 1352 | * struct netlink_ext_ack *extack);
|
| 1353 | * Bulk deletes MDB entries from dev.
|
| 1354 | * int (*ndo_mdb_dump)(struct net_device *dev, struct sk_buff *skb,
|
| 1355 | * struct netlink_callback *cb);
|
| 1356 | * Dumps MDB entries from dev. The first argument (marker) in the netlink
|
| 1357 | * callback is used by core rtnetlink code.
|
| 1358 | *
|
| 1359 | * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh,
|
| 1360 | * u16 flags, struct netlink_ext_ack *extack)
|
| 1361 | * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq,
|
| 1362 | * struct net_device *dev, u32 filter_mask,
|
| 1363 | * int nlflags)
|
| 1364 | * int (*ndo_bridge_dellink)(struct net_device *dev, struct nlmsghdr *nlh,
|
| 1365 | * u16 flags);
|
| 1366 | *
|
| 1367 | * int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier);
|
| 1368 | * Called to change device carrier. Soft-devices (like dummy, team, etc)
|
| 1369 | * which do not represent real hardware may define this to allow their
|
| 1370 | * userspace components to manage their virtual carrier state. Devices
|
| 1371 | * that determine carrier state from physical hardware properties (eg
|
| 1372 | * network cables) or protocol-dependent mechanisms (eg
|
| 1373 | * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function.
|
| 1374 | *
|
| 1375 | * int (*ndo_get_phys_port_id)(struct net_device *dev,
|
| 1376 | * struct netdev_phys_item_id *ppid);
|
| 1377 | * Called to get ID of physical port of this device. If driver does
|
| 1378 | * not implement this, it is assumed that the hw is not able to have
|
| 1379 | * multiple net devices on single physical port.
|
| 1380 | *
|
| 1381 | * int (*ndo_get_port_parent_id)(struct net_device *dev,
|
| 1382 | * struct netdev_phys_item_id *ppid)
|
| 1383 | * Called to get the parent ID of the physical port of this device.
|
| 1384 | *
|
| 1385 | * void* (*ndo_dfwd_add_station)(struct net_device *pdev,
|
| 1386 | * struct net_device *dev)
|
| 1387 | * Called by upper layer devices to accelerate switching or other
|
| 1388 | * station functionality into hardware. 'pdev is the lowerdev
|
| 1389 | * to use for the offload and 'dev' is the net device that will
|
| 1390 | * back the offload. Returns a pointer to the private structure
|
| 1391 | * the upper layer will maintain.
|
| 1392 | * void (*ndo_dfwd_del_station)(struct net_device *pdev, void *priv)
|
| 1393 | * Called by upper layer device to delete the station created
|
| 1394 | * by 'ndo_dfwd_add_station'. 'pdev' is the net device backing
|
| 1395 | * the station and priv is the structure returned by the add
|
| 1396 | * operation.
|
| 1397 | * int (*ndo_set_tx_maxrate)(struct net_device *dev,
|
| 1398 | * int queue_index, u32 maxrate);
|
| 1399 | * Called when a user wants to set a max-rate limitation of specific
|
| 1400 | * TX queue.
|
| 1401 | * int (*ndo_get_iflink)(const struct net_device *dev);
|
| 1402 | * Called to get the iflink value of this device.
|
| 1403 | * int (*ndo_fill_metadata_dst)(struct net_device *dev, struct sk_buff *skb);
|
| 1404 | * This function is used to get egress tunnel information for given skb.
|
| 1405 | * This is useful for retrieving outer tunnel header parameters while
|
| 1406 | * sampling packet.
|
| 1407 | * void (*ndo_set_rx_headroom)(struct net_device *dev, int needed_headroom);
|
| 1408 | * This function is used to specify the headroom that the skb must
|
| 1409 | * consider when allocation skb during packet reception. Setting
|
| 1410 | * appropriate rx headroom value allows avoiding skb head copy on
|
| 1411 | * forward. Setting a negative value resets the rx headroom to the
|
| 1412 | * default value.
|
| 1413 | * int (*ndo_bpf)(struct net_device *dev, struct netdev_bpf *bpf);
|
| 1414 | * This function is used to set or query state related to XDP on the
|
| 1415 | * netdevice and manage BPF offload. See definition of
|
| 1416 | * enum bpf_netdev_command for details.
|
| 1417 | * int (*ndo_xdp_xmit)(struct net_device *dev, int n, struct xdp_frame **xdp,
|
| 1418 | * u32 flags);
|
| 1419 | * This function is used to submit @n XDP packets for transmit on a
|
| 1420 | * netdevice. Returns number of frames successfully transmitted, frames
|
| 1421 | * that got dropped are freed/returned via xdp_return_frame().
|
| 1422 | * Returns negative number, means general error invoking ndo, meaning
|
| 1423 | * no frames were xmit'ed and core-caller will free all frames.
|
| 1424 | * struct net_device *(*ndo_xdp_get_xmit_slave)(struct net_device *dev,
|
| 1425 | * struct xdp_buff *xdp);
|
| 1426 | * Get the xmit slave of master device based on the xdp_buff.
|
| 1427 | * int (*ndo_xsk_wakeup)(struct net_device *dev, u32 queue_id, u32 flags);
|
| 1428 | * This function is used to wake up the softirq, ksoftirqd or kthread
|
| 1429 | * responsible for sending and/or receiving packets on a specific
|
| 1430 | * queue id bound to an AF_XDP socket. The flags field specifies if
|
| 1431 | * only RX, only Tx, or both should be woken up using the flags
|
| 1432 | * XDP_WAKEUP_RX and XDP_WAKEUP_TX.
|
| 1433 | * int (*ndo_tunnel_ctl)(struct net_device *dev, struct ip_tunnel_parm_kern *p,
|
| 1434 | * int cmd);
|
| 1435 | * Add, change, delete or get information on an IPv4 tunnel.
|
| 1436 | * struct net_device *(*ndo_get_peer_dev)(struct net_device *dev);
|
| 1437 | * If a device is paired with a peer device, return the peer instance.
|
| 1438 | * The caller must be under RCU read context.
|
| 1439 | * int (*ndo_fill_forward_path)(struct net_device_path_ctx *ctx, struct net_device_path *path);
|
| 1440 | * Get the forwarding path to reach the real device from the HW destination address
|
| 1441 | * ktime_t (*ndo_get_tstamp)(struct net_device *dev,
|
| 1442 | * const struct skb_shared_hwtstamps *hwtstamps,
|
| 1443 | * bool cycles);
|
| 1444 | * Get hardware timestamp based on normal/adjustable time or free running
|
| 1445 | * cycle counter. This function is required if physical clock supports a
|
| 1446 | * free running cycle counter.
|
| 1447 | *
|
| 1448 | * int (*ndo_hwtstamp_get)(struct net_device *dev,
|
| 1449 | * struct kernel_hwtstamp_config *kernel_config);
|
| 1450 | * Get the currently configured hardware timestamping parameters for the
|
| 1451 | * NIC device.
|
| 1452 | *
|
| 1453 | * int (*ndo_hwtstamp_set)(struct net_device *dev,
|
| 1454 | * struct kernel_hwtstamp_config *kernel_config,
|
| 1455 | * struct netlink_ext_ack *extack);
|
| 1456 | * Change the hardware timestamping parameters for NIC device.
|
| 1457 |
|
| 1458 | struct net_device_ops {
|
| 1459 | int (*ndo_init)(struct net_device *dev);
|
| 1460 | void (*ndo_uninit)(struct net_device *dev);
|
| 1461 | int (*ndo_open)(struct net_device *dev);
|
| 1462 | int (*ndo_stop)(struct net_device *dev);
|
| 1463 | netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb,
|
| 1464 | struct net_device *dev);
|
| 1465 | netdev_features_t (*ndo_features_check)(struct sk_buff *skb,
|
| 1466 | struct net_device *dev,
|
| 1467 | netdev_features_t features);
|
| 1468 | u16 (*ndo_select_queue)(struct net_device *dev,
|
| 1469 | struct sk_buff *skb,
|
| 1470 | struct net_device *sb_dev);
|
| 1471 | void (*ndo_change_rx_flags)(struct net_device *dev,
|
| 1472 | int flags);
|
| 1473 | void (*ndo_set_rx_mode)(struct net_device *dev);
|
| 1474 | int (*ndo_set_rx_mode_async)(
|
| 1475 | struct net_device *dev,
|
| 1476 | struct netdev_hw_addr_list *uc,
|
| 1477 | struct netdev_hw_addr_list *mc);
|
| 1478 | void (*ndo_work)(struct net_device *dev,
|
| 1479 | unsigned long events);
|
| 1480 | int (*ndo_set_mac_address)(struct net_device *dev,
|
| 1481 | void *addr);
|
| 1482 | int (*ndo_validate_addr)(struct net_device *dev);
|
| 1483 | int (*ndo_do_ioctl)(struct net_device *dev,
|
| 1484 | struct ifreq *ifr, int cmd);
|
| 1485 | int (*ndo_eth_ioctl)(struct net_device *dev,
|
| 1486 | struct ifreq *ifr, int cmd);
|
| 1487 | int (*ndo_siocbond)(struct net_device *dev,
|
| 1488 | struct ifreq *ifr, int cmd);
|
| 1489 | int (*ndo_siocwandev)(struct net_device *dev,
|
| 1490 | struct if_settings *ifs);
|
| 1491 | int (*ndo_siocdevprivate)(struct net_device *dev,
|
| 1492 | struct ifreq *ifr,
|
| 1493 | void __user *data, int cmd);
|
| 1494 | int (*ndo_set_config)(struct net_device *dev,
|
| 1495 | struct ifmap *map);
|
| 1496 | int (*ndo_change_mtu)(struct net_device *dev,
|
| 1497 | int new_mtu);
|
| 1498 | int (*ndo_neigh_setup)(struct net_device *dev,
|
| 1499 | struct neigh_parms *);
|
| 1500 | void (*ndo_tx_timeout) (struct net_device *dev,
|
| 1501 | unsigned int txqueue);
|
| 1502 |
|
| 1503 | void (*ndo_get_stats64)(struct net_device *dev,
|
| 1504 | struct rtnl_link_stats64 *storage);
|
| 1505 | bool (*ndo_has_offload_stats)(const struct net_device *dev, int attr_id);
|
| 1506 | int (*ndo_get_offload_stats)(int attr_id,
|
| 1507 | const struct net_device *dev,
|
| 1508 | void *attr_data);
|
| 1509 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
|
| 1510 |
|
| 1511 | int (*ndo_vlan_rx_add_vid)(struct net_device *dev,
|
| 1512 | __be16 proto, u16 vid);
|
| 1513 | int (*ndo_vlan_rx_kill_vid)(struct net_device *dev,
|
| 1514 | __be16 proto, u16 vid);
|
| 1515 | #ifdef CONFIG_NET_POLL_CONTROLLER
|
| 1516 | void (*ndo_poll_controller)(struct net_device *dev);
|
| 1517 | int (*ndo_netpoll_setup)(struct net_device *dev);
|
| 1518 | void (*ndo_netpoll_cleanup)(struct net_device *dev);
|
| 1519 | #endif
|
| 1520 | int (*ndo_set_vf_mac)(struct net_device *dev,
|
| 1521 | int queue, u8 *mac);
|
| 1522 | int (*ndo_set_vf_vlan)(struct net_device *dev,
|
| 1523 | int queue, u16 vlan,
|
| 1524 | u8 qos, __be16 proto);
|
| 1525 | int (*ndo_set_vf_rate)(struct net_device *dev,
|
| 1526 | int vf, int min_tx_rate,
|
| 1527 | int max_tx_rate);
|
| 1528 | int (*ndo_set_vf_spoofchk)(struct net_device *dev,
|
| 1529 | int vf, bool setting);
|
| 1530 | int (*ndo_set_vf_trust)(struct net_device *dev,
|
| 1531 | int vf, bool setting);
|
| 1532 | int (*ndo_get_vf_config)(struct net_device *dev,
|
| 1533 | int vf,
|
| 1534 | struct ifla_vf_info *ivf);
|
| 1535 | int (*ndo_set_vf_link_state)(struct net_device *dev,
|
| 1536 | int vf, int link_state);
|
| 1537 | int (*ndo_get_vf_stats)(struct net_device *dev,
|
| 1538 | int vf,
|
| 1539 | struct ifla_vf_stats
|
| 1540 | *vf_stats);
|
| 1541 | int (*ndo_set_vf_port)(struct net_device *dev,
|
| 1542 | int vf,
|
| 1543 | struct nlattr *port[]);
|
| 1544 | int (*ndo_get_vf_port)(struct net_device *dev,
|
| 1545 | int vf, struct sk_buff *skb);
|
| 1546 | int (*ndo_get_vf_guid)(struct net_device *dev,
|
| 1547 | int vf,
|
| 1548 | struct ifla_vf_guid *node_guid,
|
| 1549 | struct ifla_vf_guid *port_guid);
|
| 1550 | int (*ndo_set_vf_guid)(struct net_device *dev,
|
| 1551 | int vf, u64 guid,
|
| 1552 | int guid_type);
|
| 1553 | int (*ndo_set_vf_rss_query_en)(
|
| 1554 | struct net_device *dev,
|
| 1555 | int vf, bool setting);
|
| 1556 | int (*ndo_setup_tc)(struct net_device *dev,
|
| 1557 | enum tc_setup_type type,
|
| 1558 | void *type_data);
|
| 1559 | #if IS_ENABLED(CONFIG_FCOE)
|
| 1560 | int (*ndo_fcoe_enable)(struct net_device *dev);
|
| 1561 | int (*ndo_fcoe_disable)(struct net_device *dev);
|
| 1562 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev,
|
| 1563 | u16 xid,
|
| 1564 | struct scatterlist *sgl,
|
| 1565 | unsigned int sgc);
|
| 1566 | int (*ndo_fcoe_ddp_done)(struct net_device *dev,
|
| 1567 | u16 xid);
|
| 1568 | int (*ndo_fcoe_ddp_target)(struct net_device *dev,
|
| 1569 | u16 xid,
|
| 1570 | struct scatterlist *sgl,
|
| 1571 | unsigned int sgc);
|
| 1572 | int (*ndo_fcoe_get_hbainfo)(struct net_device *dev,
|
| 1573 | struct netdev_fcoe_hbainfo *hbainfo);
|
| 1574 | #endif
|
| 1575 |
|
| 1576 | #if IS_ENABLED(CONFIG_LIBFCOE)
|
| 1577 | #define NETDEV_FCOE_WWNN 0
|
| 1578 | #define NETDEV_FCOE_WWPN 1
|
| 1579 | int (*ndo_fcoe_get_wwn)(struct net_device *dev,
|
| 1580 | u64 *wwn, int type);
|
| 1581 | #endif
|
| 1582 |
|
| 1583 | #ifdef CONFIG_RFS_ACCEL
|
| 1584 | int (*ndo_rx_flow_steer)(struct net_device *dev,
|
| 1585 | const struct sk_buff *skb,
|
| 1586 | u16 rxq_index,
|
| 1587 | u32 flow_id);
|
| 1588 | #endif
|
| 1589 | int (*ndo_add_slave)(struct net_device *dev,
|
| 1590 | struct net_device *slave_dev,
|
| 1591 | struct netlink_ext_ack *extack);
|
| 1592 | int (*ndo_del_slave)(struct net_device *dev,
|
| 1593 | struct net_device *slave_dev);
|
| 1594 | struct net_device* (*ndo_get_xmit_slave)(struct net_device *dev,
|
| 1595 | struct sk_buff *skb,
|
| 1596 | bool all_slaves);
|
| 1597 | struct net_device* (*ndo_sk_get_lower_dev)(struct net_device *dev,
|
| 1598 | struct sock *sk);
|
| 1599 | netdev_features_t (*ndo_fix_features)(struct net_device *dev,
|
| 1600 | netdev_features_t features);
|
| 1601 | int (*ndo_set_features)(struct net_device *dev,
|
| 1602 | netdev_features_t features);
|
| 1603 | int (*ndo_neigh_construct)(struct net_device *dev,
|
| 1604 | struct neighbour *n);
|
| 1605 | void (*ndo_neigh_destroy)(struct net_device *dev,
|
| 1606 | struct neighbour *n);
|
| 1607 |
|
| 1608 | int (*ndo_fdb_add)(struct ndmsg *ndm,
|
| 1609 | struct nlattr *tb[],
|
| 1610 | struct net_device *dev,
|
| 1611 | const unsigned char *addr,
|
| 1612 | u16 vid,
|
| 1613 | u16 flags,
|
| 1614 | bool *notified,
|
| 1615 | struct netlink_ext_ack *extack);
|
| 1616 | int (*ndo_fdb_del)(struct ndmsg *ndm,
|
| 1617 | struct nlattr *tb[],
|
| 1618 | struct net_device *dev,
|
| 1619 | const unsigned char *addr,
|
| 1620 | u16 vid,
|
| 1621 | bool *notified,
|
| 1622 | struct netlink_ext_ack *extack);
|
| 1623 | int (*ndo_fdb_del_bulk)(struct nlmsghdr *nlh,
|
| 1624 | struct net_device *dev,
|
| 1625 | struct netlink_ext_ack *extack);
|
| 1626 | int (*ndo_fdb_dump)(struct sk_buff *skb,
|
| 1627 | struct netlink_callback *cb,
|
| 1628 | struct net_device *dev,
|
| 1629 | struct net_device *filter_dev,
|
| 1630 | int *idx);
|
| 1631 | int (*ndo_fdb_get)(struct sk_buff *skb,
|
| 1632 | struct nlattr *tb[],
|
| 1633 | struct net_device *dev,
|
| 1634 | const unsigned char *addr,
|
| 1635 | u16 vid, u32 portid, u32 seq,
|
| 1636 | struct netlink_ext_ack *extack);
|
| 1637 | int (*ndo_mdb_add)(struct net_device *dev,
|
| 1638 | struct nlattr *tb[],
|
| 1639 | u16 nlmsg_flags,
|
| 1640 | struct netlink_ext_ack *extack);
|
| 1641 | int (*ndo_mdb_del)(struct net_device *dev,
|
| 1642 | struct nlattr *tb[],
|
| 1643 | struct netlink_ext_ack *extack);
|
| 1644 | int (*ndo_mdb_del_bulk)(struct net_device *dev,
|
| 1645 | struct nlattr *tb[],
|
| 1646 | struct netlink_ext_ack *extack);
|
| 1647 | int (*ndo_mdb_dump)(struct net_device *dev,
|
| 1648 | struct sk_buff *skb,
|
| 1649 | struct netlink_callback *cb);
|
| 1650 | int (*ndo_mdb_get)(struct net_device *dev,
|
| 1651 | struct nlattr *tb[], u32 portid,
|
| 1652 | u32 seq,
|
| 1653 | struct netlink_ext_ack *extack);
|
| 1654 | int (*ndo_bridge_setlink)(struct net_device *dev,
|
| 1655 | struct nlmsghdr *nlh,
|
| 1656 | u16 flags,
|
| 1657 | struct netlink_ext_ack *extack);
|
| 1658 | int (*ndo_bridge_getlink)(struct sk_buff *skb,
|
| 1659 | u32 pid, u32 seq,
|
| 1660 | struct net_device *dev,
|
| 1661 | u32 filter_mask,
|
| 1662 | int nlflags);
|
| 1663 | int (*ndo_bridge_dellink)(struct net_device *dev,
|
| 1664 | struct nlmsghdr *nlh,
|
| 1665 | u16 flags);
|
| 1666 | int (*ndo_change_carrier)(struct net_device *dev,
|
| 1667 | bool new_carrier);
|
| 1668 | int (*ndo_get_phys_port_id)(struct net_device *dev,
|
| 1669 | struct netdev_phys_item_id *ppid);
|
| 1670 | int (*ndo_get_port_parent_id)(struct net_device *dev,
|
| 1671 | struct netdev_phys_item_id *ppid);
|
| 1672 | int (*ndo_get_phys_port_name)(struct net_device *dev,
|
| 1673 | char *name, size_t len);
|
| 1674 | void* (*ndo_dfwd_add_station)(struct net_device *pdev,
|
| 1675 | struct net_device *dev);
|
| 1676 | void (*ndo_dfwd_del_station)(struct net_device *pdev,
|
| 1677 | void *priv);
|
| 1678 |
|
| 1679 | int (*ndo_set_tx_maxrate)(struct net_device *dev,
|
| 1680 | int queue_index,
|
| 1681 | u32 maxrate);
|
| 1682 | int (*ndo_get_iflink)(const struct net_device *dev);
|
| 1683 | int (*ndo_fill_metadata_dst)(struct net_device *dev,
|
| 1684 | struct sk_buff *skb);
|
| 1685 | void (*ndo_set_rx_headroom)(struct net_device *dev,
|
| 1686 | int needed_headroom);
|
| 1687 | int (*ndo_bpf)(struct net_device *dev,
|
| 1688 | struct netdev_bpf *bpf);
|
| 1689 | int (*ndo_xdp_xmit)(struct net_device *dev, int n,
|
| 1690 | struct xdp_frame **xdp,
|
| 1691 | u32 flags);
|
| 1692 | struct net_device * (*ndo_xdp_get_xmit_slave)(struct net_device *dev,
|
| 1693 | struct xdp_buff *xdp);
|
| 1694 | int (*ndo_xsk_wakeup)(struct net_device *dev,
|
| 1695 | u32 queue_id, u32 flags);
|
| 1696 | int (*ndo_tunnel_ctl)(struct net_device *dev,
|
| 1697 | struct ip_tunnel_parm_kern *p,
|
| 1698 | int cmd);
|
| 1699 | struct net_device * (*ndo_get_peer_dev)(struct net_device *dev);
|
| 1700 | int (*ndo_fill_forward_path)(struct net_device_path_ctx *ctx,
|
| 1701 | struct net_device_path *path);
|
| 1702 | ktime_t (*ndo_get_tstamp)(struct net_device *dev,
|
| 1703 | const struct skb_shared_hwtstamps *hwtstamps,
|
| 1704 | bool cycles);
|
| 1705 | int (*ndo_hwtstamp_get)(struct net_device *dev,
|
| 1706 | struct kernel_hwtstamp_config *kernel_config);
|
| 1707 | int (*ndo_hwtstamp_set)(struct net_device *dev,
|
| 1708 | struct kernel_hwtstamp_config *kernel_config,
|
| 1709 | struct netlink_ext_ack *extack);
|
| 1710 |
|
| 1711 | #if IS_ENABLED(CONFIG_NET_SHAPER)
|
| 1712 | |
| 1713 | * @net_shaper_ops: Device shaping offload operations
|
| 1714 | * see include/net/net_shapers.h
|
| 1715 |
|
| 1716 | const struct net_shaper_ops *net_shaper_ops;
|
| 1717 | #endif
|
| 1718 | };
|
| 1719 |
|
| 1720 | |
| 1721 | * enum netdev_priv_flags - &struct net_device priv_flags
|
| 1722 | *
|
| 1723 | * These are the &struct net_device, they are only set internally
|
| 1724 | * by drivers and used in the kernel. These flags are invisible to
|
| 1725 | * userspace; this means that the order of these flags can change
|
| 1726 | * during any kernel release.
|
| 1727 | *
|
| 1728 | * You should add bitfield booleans after either net_device::priv_flags
|
| 1729 | * (hotpath) or ::threaded (slowpath) instead of extending these flags.
|
| 1730 | *
|
| 1731 | * @IFF_802_1Q_VLAN: 802.1Q VLAN device
|
| 1732 | * @IFF_EBRIDGE: Ethernet bridging device
|
| 1733 | * @IFF_BONDING: bonding master or slave
|
| 1734 | * @IFF_ISATAP: ISATAP interface (RFC4214)
|
| 1735 | * @IFF_WAN_HDLC: WAN HDLC device
|
| 1736 | * @IFF_XMIT_DST_RELEASE: dev_hard_start_xmit() is allowed to
|
| 1737 | * release skb->dst
|
| 1738 | * @IFF_DONT_BRIDGE: disallow bridging this ether dev
|
| 1739 | * @IFF_DISABLE_NETPOLL: disable netpoll at run-time
|
| 1740 | * @IFF_MACVLAN_PORT: device used as macvlan port
|
| 1741 | * @IFF_BRIDGE_PORT: device used as bridge port
|
| 1742 | * @IFF_OVS_DATAPATH: device used as Open vSwitch datapath port
|
| 1743 | * @IFF_TX_SKB_SHARING: The interface supports sharing skbs on transmit
|
| 1744 | * @IFF_UNICAST_FLT: Supports unicast filtering
|
| 1745 | * @IFF_TEAM_PORT: device used as team port
|
| 1746 | * @IFF_SUPP_NOFCS: device supports sending custom FCS
|
| 1747 | * @IFF_LIVE_ADDR_CHANGE: device supports hardware address
|
| 1748 | * change when it's running
|
| 1749 | * @IFF_MACVLAN: Macvlan device
|
| 1750 | * @IFF_XMIT_DST_RELEASE_PERM: IFF_XMIT_DST_RELEASE not taking into account
|
| 1751 | * underlying stacked devices
|
| 1752 | * @IFF_L3MDEV_MASTER: device is an L3 master device
|
| 1753 | * @IFF_NO_QUEUE: device can run without qdisc attached
|
| 1754 | * @IFF_OPENVSWITCH: device is a Open vSwitch master
|
| 1755 | * @IFF_L3MDEV_SLAVE: device is enslaved to an L3 master device
|
| 1756 | * @IFF_TEAM: device is a team device
|
| 1757 | * @IFF_PHONY_HEADROOM: the headroom value is controlled by an external
|
| 1758 | * entity (i.e. the master device for bridged veth)
|
| 1759 | * @IFF_MACSEC: device is a MACsec device
|
| 1760 | * @IFF_NO_RX_HANDLER: device doesn't support the rx_handler hook
|
| 1761 | * @IFF_FAILOVER: device is a failover master device
|
| 1762 | * @IFF_FAILOVER_SLAVE: device is lower dev of a failover master device
|
| 1763 | * @IFF_L3MDEV_RX_HANDLER: only invoke the rx handler of L3 master device
|
| 1764 | * @IFF_NO_ADDRCONF: prevent ipv6 addrconf
|
| 1765 | * @IFF_TX_SKB_NO_LINEAR: device/driver is capable of xmitting frames with
|
| 1766 | * skb_headlen(skb) == 0 (data starts from frag0)
|
| 1767 |
|
| 1768 | enum netdev_priv_flags {
|
| 1769 | IFF_802_1Q_VLAN = 1<<0,
|
| 1770 | IFF_EBRIDGE = 1<<1,
|
| 1771 | IFF_BONDING = 1<<2,
|
| 1772 | IFF_ISATAP = 1<<3,
|
| 1773 | IFF_WAN_HDLC = 1<<4,
|
| 1774 | IFF_XMIT_DST_RELEASE = 1<<5,
|
| 1775 | IFF_DONT_BRIDGE = 1<<6,
|
| 1776 | IFF_DISABLE_NETPOLL = 1<<7,
|
| 1777 | IFF_MACVLAN_PORT = 1<<8,
|
| 1778 | IFF_BRIDGE_PORT = 1<<9,
|
| 1779 | IFF_OVS_DATAPATH = 1<<10,
|
| 1780 | IFF_TX_SKB_SHARING = 1<<11,
|
| 1781 | IFF_UNICAST_FLT = 1<<12,
|
| 1782 | IFF_TEAM_PORT = 1<<13,
|
| 1783 | IFF_SUPP_NOFCS = 1<<14,
|
| 1784 | IFF_LIVE_ADDR_CHANGE = 1<<15,
|
| 1785 | IFF_MACVLAN = 1<<16,
|
| 1786 | IFF_XMIT_DST_RELEASE_PERM = 1<<17,
|
| 1787 | IFF_L3MDEV_MASTER = 1<<18,
|
| 1788 | IFF_NO_QUEUE = 1<<19,
|
| 1789 | IFF_OPENVSWITCH = 1<<20,
|
| 1790 | IFF_L3MDEV_SLAVE = 1<<21,
|
| 1791 | IFF_TEAM = 1<<22,
|
| 1792 | IFF_PHONY_HEADROOM = 1<<24,
|
| 1793 | IFF_MACSEC = 1<<25,
|
| 1794 | IFF_NO_RX_HANDLER = 1<<26,
|
| 1795 | IFF_FAILOVER = 1<<27,
|
| 1796 | IFF_FAILOVER_SLAVE = 1<<28,
|
| 1797 | IFF_L3MDEV_RX_HANDLER = 1<<29,
|
| 1798 | IFF_NO_ADDRCONF = BIT_ULL(30),
|
| 1799 | IFF_TX_SKB_NO_LINEAR = BIT_ULL(31),
|
| 1800 | };
|
| 1801 |
|
| 1802 |
|
| 1803 | enum netdev_ml_priv_type {
|
| 1804 | ML_PRIV_NONE,
|
| 1805 | ML_PRIV_CAN,
|
| 1806 | };
|
| 1807 |
|
| 1808 | enum netdev_stat_type {
|
| 1809 | NETDEV_PCPU_STAT_NONE,
|
| 1810 | NETDEV_PCPU_STAT_LSTATS,
|
| 1811 | NETDEV_PCPU_STAT_TSTATS,
|
| 1812 | NETDEV_PCPU_STAT_DSTATS,
|
| 1813 | };
|
| 1814 |
|
| 1815 | enum netmem_tx_mode {
|
| 1816 | NETMEM_TX_NONE,
|
| 1817 | NETMEM_TX_DMA,
|
| 1818 | NETMEM_TX_NO_DMA,
|
| 1819 | };
|
| 1820 |
|
| 1821 | enum netdev_reg_state {
|
| 1822 | NETREG_UNINITIALIZED = 0,
|
| 1823 | NETREG_REGISTERED,
|
| 1824 | NETREG_UNREGISTERING,
|
| 1825 | NETREG_UNREGISTERED,
|
| 1826 | NETREG_RELEASED,
|
| 1827 | NETREG_DUMMY,
|
| 1828 | };
|
| 1829 |
|
| 1830 | |
| 1831 | * struct net_device - The DEVICE structure.
|
| 1832 | *
|
| 1833 | * Actually, this whole structure is a big mistake. It mixes I/O
|
| 1834 | * data with strictly "high-level" data, and it has to know about
|
| 1835 | * almost every data structure used in the INET module.
|
| 1836 | *
|
| 1837 | * @priv_flags: flags invisible to userspace defined as bits, see
|
| 1838 | * enum netdev_priv_flags for the definitions
|
| 1839 | * @lltx: device supports lockless Tx. Deprecated for real HW
|
| 1840 | * drivers. Mainly used by logical interfaces, such as
|
| 1841 | * bonding and tunnels
|
| 1842 | * @netmem_tx: device netmem TX mode
|
| 1843 | *
|
| 1844 | * @name: This is the first field of the "visible" part of this structure
|
| 1845 | * (i.e. as seen by users in the "Space.c" file). It is the name
|
| 1846 | * of the interface.
|
| 1847 | *
|
| 1848 | * @name_node: Name hashlist node
|
| 1849 | * @ifalias: SNMP alias
|
| 1850 | * @mem_end: Shared memory end
|
| 1851 | * @mem_start: Shared memory start
|
| 1852 | * @base_addr: Device I/O address
|
| 1853 | * @irq: Device IRQ number
|
| 1854 | *
|
| 1855 | * @state: Generic network queuing layer state, see netdev_state_t
|
| 1856 | * @dev_list: The global list of network devices
|
| 1857 | * @napi_list: List entry used for polling NAPI devices
|
| 1858 | * @unreg_list: List entry when we are unregistering the
|
| 1859 | * device; see the function unregister_netdev
|
| 1860 | * @unreg_list_net:List entry when we are unregistering the cross-netns
|
| 1861 | * device; see the function unregister_netdevice_queue_net()
|
| 1862 | * @close_list: List entry used when we are closing the device
|
| 1863 | * @ptype_all: Device-specific packet handlers for all protocols
|
| 1864 | * @ptype_specific: Device-specific, protocol-specific packet handlers
|
| 1865 | *
|
| 1866 | * @adj_list: Directly linked devices, like slaves for bonding
|
| 1867 | * @features: Currently active device features
|
| 1868 | * @hw_features: User-changeable features
|
| 1869 | *
|
| 1870 | * @wanted_features: User-requested features
|
| 1871 | * @vlan_features: Mask of features inheritable by VLAN devices
|
| 1872 | *
|
| 1873 | * @hw_enc_features: Mask of features inherited by encapsulating devices
|
| 1874 | * This field indicates what encapsulation
|
| 1875 | * offloads the hardware is capable of doing,
|
| 1876 | * and drivers will need to set them appropriately.
|
| 1877 | *
|
| 1878 | * @mpls_features: Mask of features inheritable by MPLS
|
| 1879 | * @gso_partial_features: value(s) from NETIF_F_GSO\*
|
| 1880 | * @mangleid_features: Mask of features requiring MANGLEID, will be
|
| 1881 | * disabled together with the latter.
|
| 1882 | *
|
| 1883 | * @ifindex: interface index
|
| 1884 | * @group: The group the device belongs to
|
| 1885 | *
|
| 1886 | * @stats: Statistics struct, which was left as a legacy, use
|
| 1887 | * rtnl_link_stats64 instead
|
| 1888 | *
|
| 1889 | * @core_stats: core networking counters,
|
| 1890 | * do not use this in drivers
|
| 1891 | * @carrier_up_count: Number of times the carrier has been up
|
| 1892 | * @carrier_down_count: Number of times the carrier has been down
|
| 1893 | *
|
| 1894 | * @wireless_handlers: List of functions to handle Wireless Extensions,
|
| 1895 | * instead of ioctl,
|
| 1896 | * see <net/iw_handler.h> for details.
|
| 1897 | *
|
| 1898 | * @netdev_ops: Includes several pointers to callbacks,
|
| 1899 | * if one wants to override the ndo_*() functions
|
| 1900 | * @xdp_metadata_ops: Includes pointers to XDP metadata callbacks.
|
| 1901 | * @xsk_tx_metadata_ops: Includes pointers to AF_XDP TX metadata callbacks.
|
| 1902 | * @ethtool_ops: Management operations
|
| 1903 | * @l3mdev_ops: Layer 3 master device operations
|
| 1904 | * @ndisc_ops: Includes callbacks for different IPv6 neighbour
|
| 1905 | * discovery handling. Necessary for e.g. 6LoWPAN.
|
| 1906 | * @xfrmdev_ops: Transformation offload operations
|
| 1907 | * @tlsdev_ops: Transport Layer Security offload operations
|
| 1908 | * @header_ops: Includes callbacks for creating,parsing,caching,etc
|
| 1909 | * of Layer 2 headers.
|
| 1910 | *
|
| 1911 | * @flags: Interface flags (a la BSD)
|
| 1912 | * @xdp_features: XDP capability supported by the device
|
| 1913 | * @gflags: Global flags ( kept as legacy )
|
| 1914 | * @priv_len: Size of the ->priv flexible array
|
| 1915 | * @priv: Flexible array containing private data
|
| 1916 | * @operstate: RFC2863 operstate
|
| 1917 | * @link_mode: Mapping policy to operstate
|
| 1918 | * @if_port: Selectable AUI, TP, ...
|
| 1919 | * @dma: DMA channel
|
| 1920 | * @mtu: Interface MTU value
|
| 1921 | * @min_mtu: Interface Minimum MTU value
|
| 1922 | * @max_mtu: Interface Maximum MTU value
|
| 1923 | * @type: Interface hardware type
|
| 1924 | * @hard_header_len: Maximum hardware header length.
|
| 1925 | * @min_header_len: Minimum hardware header length
|
| 1926 | *
|
| 1927 | * @needed_headroom: Extra headroom the hardware may need, but not in all
|
| 1928 | * cases can this be guaranteed
|
| 1929 | * @needed_tailroom: Extra tailroom the hardware may need, but not in all
|
| 1930 | * cases can this be guaranteed. Some cases also use
|
| 1931 | * LL_MAX_HEADER instead to allocate the skb
|
| 1932 | *
|
| 1933 | * interface address info:
|
| 1934 | *
|
| 1935 | * @perm_addr: Permanent hw address
|
| 1936 | * @addr_assign_type: Hw address assignment type
|
| 1937 | * @addr_len: Hardware address length
|
| 1938 | * @upper_level: Maximum depth level of upper devices.
|
| 1939 | * @lower_level: Maximum depth level of lower devices.
|
| 1940 | * @threaded: napi threaded state.
|
| 1941 | * @neigh_priv_len: Used in neigh_alloc()
|
| 1942 | * @dev_id: Used to differentiate devices that share
|
| 1943 | * the same link layer address
|
| 1944 | * @dev_port: Used to differentiate devices that share
|
| 1945 | * the same function
|
| 1946 | * @addr_list_lock: XXX: need comments on this one
|
| 1947 | * @name_assign_type: network interface name assignment type
|
| 1948 | * @uc_promisc: Counter that indicates promiscuous mode
|
| 1949 | * has been enabled due to the need to listen to
|
| 1950 | * additional unicast addresses in a device that
|
| 1951 | * does not implement ndo_set_rx_mode()
|
| 1952 | * @work_node: List entry for async netdev_work processing
|
| 1953 | * @work_tracker: Refcount tracker for async netdev_work
|
| 1954 | * @work_pending: Driver-defined pending netdev_work, passed to
|
| 1955 | * ndo_work() (see netdev_work_sched())
|
| 1956 | * @work_core_pending: Core-defined pending netdev_work (NETDEV_WORK_*)
|
| 1957 | * @rx_mode_addr_cache: Recycled snapshot entries for rx_mode work
|
| 1958 | * @rx_mode_retry_timer: Timer that re-queues rx_mode work after failure
|
| 1959 | * @rx_mode_retry_count: Number of consecutive retries already scheduled
|
| 1960 | * @uc: unicast mac addresses
|
| 1961 | * @mc: multicast mac addresses
|
| 1962 | * @dev_addrs: list of device hw addresses
|
| 1963 | * @queues_kset: Group of all Kobjects in the Tx and RX queues
|
| 1964 | * @promiscuity: Number of times the NIC is told to work in
|
| 1965 | * promiscuous mode; if it becomes 0 the NIC will
|
| 1966 | * exit promiscuous mode
|
| 1967 | * @allmulti: Counter, enables or disables allmulticast mode
|
| 1968 | *
|
| 1969 | * @vlan_info: VLAN info
|
| 1970 | * @dsa_ptr: dsa specific data
|
| 1971 | * @tipc_ptr: TIPC specific data
|
| 1972 | * @ip_ptr: IPv4 specific data
|
| 1973 | * @ip6_ptr: IPv6 specific data
|
| 1974 | * @ieee80211_ptr: IEEE 802.11 specific data, assign before registering
|
| 1975 | * @ieee802154_ptr: IEEE 802.15.4 low-rate Wireless Personal Area Network
|
| 1976 | * device struct
|
| 1977 | * @mpls_ptr: mpls_dev struct pointer
|
| 1978 | * @mctp_ptr: MCTP specific data
|
| 1979 | * @psp_dev: PSP crypto device registered for this netdev
|
| 1980 | *
|
| 1981 | * @dev_addr: Hw address (before bcast,
|
| 1982 | * because most packets are unicast)
|
| 1983 | *
|
| 1984 | * @_rx: Array of RX queues
|
| 1985 | * @num_rx_queues: Number of RX queues
|
| 1986 | * allocated at register_netdev() time
|
| 1987 | * @real_num_rx_queues: Number of RX queues currently active in device
|
| 1988 | * @xdp_prog: XDP sockets filter program pointer
|
| 1989 | *
|
| 1990 | * @rx_handler: handler for received packets
|
| 1991 | * @rx_handler_data: XXX: need comments on this one
|
| 1992 | * @tcx_ingress: BPF & clsact qdisc specific data for ingress processing
|
| 1993 | * @ingress_queue: XXX: need comments on this one
|
| 1994 | * @nf_hooks_ingress: netfilter hooks executed for ingress packets
|
| 1995 | * @broadcast: hw bcast address
|
| 1996 | *
|
| 1997 | * @rx_cpu_rmap: CPU reverse-mapping for RX completion interrupts,
|
| 1998 | * indexed by RX queue number. Assigned by driver.
|
| 1999 | * This must only be set if the ndo_rx_flow_steer
|
| 2000 | * operation is defined
|
| 2001 | * @index_hlist: Device index hash chain
|
| 2002 | *
|
| 2003 | * @_tx: Array of TX queues
|
| 2004 | * @num_tx_queues: Number of TX queues allocated at alloc_netdev_mq() time
|
| 2005 | * @real_num_tx_queues: Number of TX queues currently active in device
|
| 2006 | * @qdisc: Root qdisc from userspace point of view
|
| 2007 | * @tx_queue_len: Max frames per queue allowed
|
| 2008 | * @tx_global_lock: XXX: need comments on this one
|
| 2009 | * @xdp_bulkq: XDP device bulk queue
|
| 2010 | * @xps_maps: all CPUs/RXQs maps for XPS device
|
| 2011 | *
|
| 2012 | * @xps_maps: XXX: need comments on this one
|
| 2013 | * @tcx_egress: BPF & clsact qdisc specific data for egress processing
|
| 2014 | * @nf_hooks_egress: netfilter hooks executed for egress packets
|
| 2015 | * @qdisc_hash: qdisc hash table
|
| 2016 | * @watchdog_timeo: Represents the timeout that is used by
|
| 2017 | * the watchdog (see dev_watchdog())
|
| 2018 | * @watchdog_lock: protect watchdog_ref_held
|
| 2019 | * @watchdog_ref_held: True if the watchdog device ref is taken.
|
| 2020 | * @watchdog_timer: List of timers
|
| 2021 | *
|
| 2022 | * @proto_down_reason: reason a netdev interface is held down
|
| 2023 | * @pcpu_refcnt: Number of references to this device
|
| 2024 | * @dev_refcnt: Number of references to this device
|
| 2025 | * @refcnt_tracker: Tracker directory for tracked references to this device
|
| 2026 | * @todo_list: Delayed register/unregister
|
| 2027 | * @link_watch_list: XXX: need comments on this one
|
| 2028 | *
|
| 2029 | * @reg_state: Register/unregister state machine
|
| 2030 | * @dismantle: Device is going to be freed
|
| 2031 | * @needs_free_netdev: Should unregister perform free_netdev?
|
| 2032 | * @priv_destructor: Called from unregister
|
| 2033 | * @npinfo: XXX: need comments on this one
|
| 2034 | * @nd_net: Network namespace this network device is inside
|
| 2035 | * protected by @lock
|
| 2036 | *
|
| 2037 | * @ml_priv: Mid-layer private
|
| 2038 | * @ml_priv_type: Mid-layer private type
|
| 2039 | *
|
| 2040 | * @pcpu_stat_type: Type of device statistics which the core should
|
| 2041 | * allocate/free: none, lstats, tstats, dstats. none
|
| 2042 | * means the driver is handling statistics allocation/
|
| 2043 | * freeing internally.
|
| 2044 | * @lstats: Loopback statistics: packets, bytes
|
| 2045 | * @tstats: Tunnel statistics: RX/TX packets, RX/TX bytes
|
| 2046 | * @dstats: Dummy statistics: RX/TX/drop packets, RX/TX bytes
|
| 2047 | *
|
| 2048 | * @garp_port: GARP
|
| 2049 | * @mrp_port: MRP
|
| 2050 | *
|
| 2051 | * @dm_private: Drop monitor private
|
| 2052 | *
|
| 2053 | * @dev: Class/net/name entry
|
| 2054 | * @sysfs_groups: Space for optional device, statistics and wireless
|
| 2055 | * sysfs groups
|
| 2056 | *
|
| 2057 | * @sysfs_rx_queue_group: Space for optional per-rx queue attributes
|
| 2058 | * @rtnl_link_ops: Rtnl_link_ops
|
| 2059 | * @stat_ops: Optional ops for queue-aware statistics
|
| 2060 | * @queue_mgmt_ops: Optional ops for queue management
|
| 2061 | *
|
| 2062 | * @gso_max_size: Maximum size of generic segmentation offload
|
| 2063 | * @tso_max_size: Device (as in HW) limit on the max TSO request size
|
| 2064 | * @gso_max_segs: Maximum number of segments that can be passed to the
|
| 2065 | * NIC for GSO
|
| 2066 | * @tso_max_segs: Device (as in HW) limit on the max TSO segment count
|
| 2067 | * @gso_ipv4_max_size: Maximum size of generic segmentation offload,
|
| 2068 | * for IPv4.
|
| 2069 | *
|
| 2070 | * @dcbnl_ops: Data Center Bridging netlink ops
|
| 2071 | * @num_tc: Number of traffic classes in the net device
|
| 2072 | * @tc_to_txq: XXX: need comments on this one
|
| 2073 | * @prio_tc_map: XXX: need comments on this one
|
| 2074 | *
|
| 2075 | * @fcoe_ddp_xid: Max exchange id for FCoE LRO by ddp
|
| 2076 | *
|
| 2077 | * @priomap: XXX: need comments on this one
|
| 2078 | * @link_topo: Physical link topology tracking attached PHYs
|
| 2079 | * @phydev: Physical device may attach itself
|
| 2080 | * for hardware timestamping
|
| 2081 | * @sfp_bus: attached &struct sfp_bus structure.
|
| 2082 | *
|
| 2083 | * @qdisc_tx_busylock: lockdep class annotating Qdisc->busylock spinlock
|
| 2084 | *
|
| 2085 | * @proto_down: protocol port state information can be sent to the
|
| 2086 | * switch driver and used to set the phys state of the
|
| 2087 | * switch port.
|
| 2088 | *
|
| 2089 | * @irq_affinity_auto: driver wants the core to store and re-assign the IRQ
|
| 2090 | * affinity. Set by netif_enable_irq_affinity(), then
|
| 2091 | * the driver must create a persistent napi by
|
| 2092 | * netif_napi_add_config() and finally bind the napi to
|
| 2093 | * IRQ (via netif_napi_set_irq()).
|
| 2094 | *
|
| 2095 | * @rx_cpu_rmap_auto: driver wants the core to manage the ARFS rmap.
|
| 2096 | * Set by calling netif_enable_cpu_rmap().
|
| 2097 | *
|
| 2098 | * @see_all_hwtstamp_requests: device wants to see calls to
|
| 2099 | * ndo_hwtstamp_set() for all timestamp requests
|
| 2100 | * regardless of source, even if those aren't
|
| 2101 | * HWTSTAMP_SOURCE_NETDEV
|
| 2102 | * @change_proto_down: device supports setting carrier via IFLA_PROTO_DOWN
|
| 2103 | * @netns_immutable: interface can't change network namespaces
|
| 2104 | * @fcoe_mtu: device supports maximum FCoE MTU, 2158 bytes
|
| 2105 | *
|
| 2106 | * @net_notifier_list: List of per-net netdev notifier block
|
| 2107 | * that follow this device when it is moved
|
| 2108 | * to another network namespace.
|
| 2109 | *
|
| 2110 | * @macsec_ops: MACsec offloading ops
|
| 2111 | *
|
| 2112 | * @udp_tunnel_nic_info: static structure describing the UDP tunnel
|
| 2113 | * offload capabilities of the device
|
| 2114 | * @udp_tunnel_nic: UDP tunnel offload state
|
| 2115 | * @ethtool: ethtool related state
|
| 2116 | * @xdp_state: stores info on attached XDP BPF programs
|
| 2117 | *
|
| 2118 | * @nested_level: Used as a parameter of spin_lock_nested() of
|
| 2119 | * dev->addr_list_lock.
|
| 2120 | * @unlink_list: As netif_addr_lock() can be called recursively,
|
| 2121 | * keep a list of interfaces to be deleted.
|
| 2122 | * @gro_max_size: Maximum size of aggregated packet in generic
|
| 2123 | * receive offload (GRO)
|
| 2124 | * @gro_ipv4_max_size: Maximum size of aggregated packet in generic
|
| 2125 | * receive offload (GRO), for IPv4.
|
| 2126 | * @xdp_zc_max_segs: Maximum number of segments supported by AF_XDP
|
| 2127 | * zero copy driver
|
| 2128 | *
|
| 2129 | * @dev_addr_shadow: Copy of @dev_addr to catch direct writes.
|
| 2130 | * @linkwatch_dev_tracker: refcount tracker used by linkwatch.
|
| 2131 | * @watchdog_dev_tracker: refcount tracker used by watchdog.
|
| 2132 | * @dev_registered_tracker: tracker for reference held while
|
| 2133 | * registered
|
| 2134 | * @offload_xstats_l3: L3 HW stats for this netdevice.
|
| 2135 | *
|
| 2136 | * @devlink_port: Pointer to related devlink port structure.
|
| 2137 | * Assigned by a driver before netdev registration using
|
| 2138 | * SET_NETDEV_DEVLINK_PORT macro. This pointer is static
|
| 2139 | * during the time netdevice is registered.
|
| 2140 | *
|
| 2141 | * @dpll_pin: Pointer to the SyncE source pin of a DPLL subsystem,
|
| 2142 | * where the clock is recovered.
|
| 2143 | *
|
| 2144 | * @max_pacing_offload_horizon: max EDT offload horizon in nsec.
|
| 2145 | * @napi_config: An array of napi_config structures containing per-NAPI
|
| 2146 | * settings.
|
| 2147 | * @num_napi_configs: number of allocated NAPI config structs,
|
| 2148 | * always >= max(num_rx_queues, num_tx_queues).
|
| 2149 | * @gro_flush_timeout: timeout for GRO layer in NAPI
|
| 2150 | * @napi_defer_hard_irqs: If not zero, provides a counter that would
|
| 2151 | * allow to avoid NIC hard IRQ, on busy queues.
|
| 2152 | *
|
| 2153 | * @neighbours: List heads pointing to this device's neighbours'
|
| 2154 | * dev_list, one per address-family.
|
| 2155 | * @hwprov: Tracks which PTP performs hardware packet time stamping.
|
| 2156 | *
|
| 2157 | * FIXME: cleanup struct net_device such that network protocol info
|
| 2158 | * moves out.
|
| 2159 |
|
| 2160 |
|
| 2161 | struct net_device {
|
| 2162 | |
| 2163 | * Documentation/networking/net_cachelines/net_device.rst.
|
| 2164 | * Please update the document when adding new fields.
|
| 2165 |
|
| 2166 |
|
| 2167 |
|
| 2168 | __cacheline_group_begin(net_device_read_tx);
|
| 2169 | struct_group(priv_flags_fast,
|
| 2170 | unsigned long priv_flags:32;
|
| 2171 | unsigned long lltx:1;
|
| 2172 | unsigned long netmem_tx:2;
|
| 2173 | );
|
| 2174 | const struct net_device_ops *netdev_ops;
|
| 2175 | const struct header_ops *header_ops;
|
| 2176 | struct netdev_queue *_tx;
|
| 2177 | netdev_features_t gso_partial_features;
|
| 2178 | unsigned int real_num_tx_queues;
|
| 2179 | unsigned int gso_max_size;
|
| 2180 | unsigned int gso_ipv4_max_size;
|
| 2181 | u16 gso_max_segs;
|
| 2182 | s16 num_tc;
|
| 2183 | |
| 2184 | * Writers usually hold RTNL.
|
| 2185 | * It is recommended to use READ_ONCE() to annotate the reads,
|
| 2186 | * and to use WRITE_ONCE() to annotate the writes.
|
| 2187 |
|
| 2188 | unsigned int mtu;
|
| 2189 | unsigned short needed_headroom;
|
| 2190 | struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE];
|
| 2191 | #ifdef CONFIG_XPS
|
| 2192 | struct xps_dev_maps __rcu *xps_maps[XPS_MAPS_MAX];
|
| 2193 | #endif
|
| 2194 | #ifdef CONFIG_NETFILTER_EGRESS
|
| 2195 | struct nf_hook_entries __rcu *nf_hooks_egress;
|
| 2196 | #endif
|
| 2197 | #ifdef CONFIG_NET_XGRESS
|
| 2198 | struct bpf_mprog_entry __rcu *tcx_egress;
|
| 2199 | #endif
|
| 2200 | __cacheline_group_end(net_device_read_tx);
|
| 2201 |
|
| 2202 |
|
| 2203 | __cacheline_group_begin(net_device_read_txrx);
|
| 2204 | union {
|
| 2205 | struct pcpu_lstats __percpu *lstats;
|
| 2206 | struct pcpu_sw_netstats __percpu *tstats;
|
| 2207 | struct pcpu_dstats __percpu *dstats;
|
| 2208 | };
|
| 2209 | unsigned long state;
|
| 2210 | unsigned int flags;
|
| 2211 | unsigned short hard_header_len;
|
| 2212 | enum netdev_stat_type pcpu_stat_type:8;
|
| 2213 | netdev_features_t features;
|
| 2214 | struct inet6_dev __rcu *ip6_ptr;
|
| 2215 | __cacheline_group_end(net_device_read_txrx);
|
| 2216 |
|
| 2217 |
|
| 2218 | __cacheline_group_begin(net_device_read_rx);
|
| 2219 | struct bpf_prog __rcu *xdp_prog;
|
| 2220 | struct list_head ptype_specific;
|
| 2221 | int ifindex;
|
| 2222 | unsigned int real_num_rx_queues;
|
| 2223 | struct netdev_rx_queue *_rx;
|
| 2224 | unsigned int gro_max_size;
|
| 2225 | unsigned int gro_ipv4_max_size;
|
| 2226 | rx_handler_func_t __rcu *rx_handler;
|
| 2227 | void __rcu *rx_handler_data;
|
| 2228 | possible_net_t nd_net;
|
| 2229 | #ifdef CONFIG_NETPOLL
|
| 2230 | struct netpoll_info __rcu *npinfo;
|
| 2231 | #endif
|
| 2232 | #ifdef CONFIG_NET_XGRESS
|
| 2233 | struct bpf_mprog_entry __rcu *tcx_ingress;
|
| 2234 | #endif
|
| 2235 | __cacheline_group_end(net_device_read_rx);
|
| 2236 |
|
| 2237 | char name[IFNAMSIZ];
|
| 2238 | struct netdev_name_node *name_node;
|
| 2239 | struct dev_ifalias __rcu *ifalias;
|
| 2240 | |
| 2241 | * I/O specific fields
|
| 2242 | * FIXME: Merge these and struct ifmap into one
|
| 2243 |
|
| 2244 | unsigned long mem_end;
|
| 2245 | unsigned long mem_start;
|
| 2246 | unsigned long base_addr;
|
| 2247 |
|
| 2248 | |
| 2249 | * Some hardware also needs these fields (state,dev_list,
|
| 2250 | * napi_list,unreg_list,close_list) but they are not
|
| 2251 | * part of the usual set specified in Space.c.
|
| 2252 |
|
| 2253 |
|
| 2254 |
|
| 2255 | struct list_head dev_list;
|
| 2256 | struct list_head napi_list;
|
| 2257 | struct list_head unreg_list;
|
| 2258 | #ifdef CONFIG_DEBUG_NET_SMALL_RTNL
|
| 2259 | struct list_head unreg_list_net;
|
| 2260 | #endif
|
| 2261 | struct list_head close_list;
|
| 2262 | struct list_head ptype_all;
|
| 2263 |
|
| 2264 | struct {
|
| 2265 | struct list_head upper;
|
| 2266 | struct list_head lower;
|
| 2267 | } adj_list;
|
| 2268 |
|
| 2269 |
|
| 2270 | xdp_features_t xdp_features;
|
| 2271 | const struct xdp_metadata_ops *xdp_metadata_ops;
|
| 2272 | const struct xsk_tx_metadata_ops *xsk_tx_metadata_ops;
|
| 2273 | unsigned short gflags;
|
| 2274 |
|
| 2275 | unsigned short needed_tailroom;
|
| 2276 |
|
| 2277 | netdev_features_t hw_features;
|
| 2278 | netdev_features_t wanted_features;
|
| 2279 | netdev_features_t vlan_features;
|
| 2280 | netdev_features_t hw_enc_features;
|
| 2281 | netdev_features_t mpls_features;
|
| 2282 | netdev_features_t mangleid_features;
|
| 2283 |
|
| 2284 | unsigned int min_mtu;
|
| 2285 | unsigned int max_mtu;
|
| 2286 | unsigned short type;
|
| 2287 | unsigned char min_header_len;
|
| 2288 | unsigned char name_assign_type;
|
| 2289 |
|
| 2290 | int group;
|
| 2291 |
|
| 2292 | struct net_device_stats stats;
|
| 2293 |
|
| 2294 | struct net_device_core_stats __percpu *core_stats;
|
| 2295 |
|
| 2296 |
|
| 2297 | atomic_t carrier_up_count;
|
| 2298 | atomic_t carrier_down_count;
|
| 2299 |
|
| 2300 | #ifdef CONFIG_WIRELESS_EXT
|
| 2301 | const struct iw_handler_def *wireless_handlers;
|
| 2302 | #endif
|
| 2303 | const struct ethtool_ops *ethtool_ops;
|
| 2304 | #ifdef CONFIG_NET_L3_MASTER_DEV
|
| 2305 | const struct l3mdev_ops *l3mdev_ops;
|
| 2306 | #endif
|
| 2307 | #if IS_ENABLED(CONFIG_IPV6)
|
| 2308 | const struct ndisc_ops *ndisc_ops;
|
| 2309 | #endif
|
| 2310 |
|
| 2311 | #ifdef CONFIG_XFRM_OFFLOAD
|
| 2312 | const struct xfrmdev_ops *xfrmdev_ops;
|
| 2313 | #endif
|
| 2314 |
|
| 2315 | #if IS_ENABLED(CONFIG_TLS_DEVICE)
|
| 2316 | const struct tlsdev_ops *tlsdev_ops;
|
| 2317 | #endif
|
| 2318 |
|
| 2319 | unsigned int operstate;
|
| 2320 | unsigned char link_mode;
|
| 2321 |
|
| 2322 | unsigned char if_port;
|
| 2323 | unsigned char dma;
|
| 2324 |
|
| 2325 |
|
| 2326 | unsigned char perm_addr[MAX_ADDR_LEN];
|
| 2327 | unsigned char addr_assign_type;
|
| 2328 | unsigned char addr_len;
|
| 2329 | unsigned char upper_level;
|
| 2330 | unsigned char lower_level;
|
| 2331 | u8 threaded;
|
| 2332 |
|
| 2333 | unsigned short neigh_priv_len;
|
| 2334 | unsigned short dev_id;
|
| 2335 | unsigned short dev_port;
|
| 2336 | int irq;
|
| 2337 | u32 priv_len;
|
| 2338 |
|
| 2339 | spinlock_t addr_list_lock;
|
| 2340 |
|
| 2341 | struct netdev_hw_addr_list uc;
|
| 2342 | struct netdev_hw_addr_list mc;
|
| 2343 | struct netdev_hw_addr_list dev_addrs;
|
| 2344 |
|
| 2345 | #ifdef CONFIG_SYSFS
|
| 2346 | struct kset *queues_kset;
|
| 2347 | #endif
|
| 2348 | #ifdef CONFIG_LOCKDEP
|
| 2349 | struct list_head unlink_list;
|
| 2350 | #endif
|
| 2351 | unsigned int promiscuity;
|
| 2352 | unsigned int allmulti;
|
| 2353 | bool uc_promisc;
|
| 2354 | struct list_head work_node;
|
| 2355 | netdevice_tracker work_tracker;
|
| 2356 | unsigned long work_pending;
|
| 2357 | unsigned long work_core_pending;
|
| 2358 | struct netdev_hw_addr_list rx_mode_addr_cache;
|
| 2359 | struct timer_list rx_mode_retry_timer;
|
| 2360 | unsigned int rx_mode_retry_count;
|
| 2361 | #ifdef CONFIG_LOCKDEP
|
| 2362 | unsigned char nested_level;
|
| 2363 | #endif
|
| 2364 |
|
| 2365 |
|
| 2366 |
|
| 2367 | struct in_device __rcu *ip_ptr;
|
| 2368 |
|
| 2369 | struct hlist_head fib_nh_head;
|
| 2370 |
|
| 2371 | #if IS_ENABLED(CONFIG_VLAN_8021Q)
|
| 2372 | struct vlan_info __rcu *vlan_info;
|
| 2373 | #endif
|
| 2374 | #if IS_ENABLED(CONFIG_NET_DSA)
|
| 2375 | struct dsa_port *dsa_ptr;
|
| 2376 | #endif
|
| 2377 | #if IS_ENABLED(CONFIG_TIPC)
|
| 2378 | struct tipc_bearer __rcu *tipc_ptr;
|
| 2379 | #endif
|
| 2380 | #if IS_ENABLED(CONFIG_CFG80211)
|
| 2381 | struct wireless_dev *ieee80211_ptr;
|
| 2382 | #endif
|
| 2383 | #if IS_ENABLED(CONFIG_IEEE802154) || IS_ENABLED(CONFIG_6LOWPAN)
|
| 2384 | struct wpan_dev *ieee802154_ptr;
|
| 2385 | #endif
|
| 2386 | #if IS_ENABLED(CONFIG_MPLS_ROUTING)
|
| 2387 | struct mpls_dev __rcu *mpls_ptr;
|
| 2388 | #endif
|
| 2389 | #if IS_ENABLED(CONFIG_MCTP)
|
| 2390 | struct mctp_dev __rcu *mctp_ptr;
|
| 2391 | #endif
|
| 2392 | #if IS_ENABLED(CONFIG_INET_PSP)
|
| 2393 | struct psp_dev __rcu *psp_dev;
|
| 2394 | #endif
|
| 2395 |
|
| 2396 | |
| 2397 | * Cache lines mostly used on receive path (including eth_type_trans())
|
| 2398 |
|
| 2399 |
|
| 2400 | const unsigned char *dev_addr;
|
| 2401 |
|
| 2402 | unsigned int num_rx_queues;
|
| 2403 | #define GRO_LEGACY_MAX_SIZE 65536u
|
| 2404 | |
| 2405 | * and shinfo->gso_segs is a 16bit field.
|
| 2406 |
|
| 2407 | #define GRO_MAX_SIZE (8 * 65535u)
|
| 2408 | unsigned int xdp_zc_max_segs;
|
| 2409 | struct netdev_queue __rcu *ingress_queue;
|
| 2410 | #ifdef CONFIG_NETFILTER_INGRESS
|
| 2411 | struct nf_hook_entries __rcu *nf_hooks_ingress;
|
| 2412 | #endif
|
| 2413 |
|
| 2414 | unsigned char broadcast[MAX_ADDR_LEN];
|
| 2415 | #ifdef CONFIG_RFS_ACCEL
|
| 2416 | struct cpu_rmap *rx_cpu_rmap;
|
| 2417 | #endif
|
| 2418 | struct hlist_node index_hlist;
|
| 2419 |
|
| 2420 | |
| 2421 | * Cache lines mostly used on transmit path
|
| 2422 |
|
| 2423 | unsigned int num_tx_queues;
|
| 2424 | struct Qdisc __rcu *qdisc;
|
| 2425 | unsigned int tx_queue_len;
|
| 2426 | spinlock_t tx_global_lock;
|
| 2427 |
|
| 2428 | struct xdp_dev_bulk_queue __percpu *xdp_bulkq;
|
| 2429 |
|
| 2430 | #ifdef CONFIG_NET_SCHED
|
| 2431 | DECLARE_HASHTABLE (qdisc_hash, 4);
|
| 2432 | #endif
|
| 2433 |
|
| 2434 | struct timer_list watchdog_timer;
|
| 2435 | int watchdog_timeo;
|
| 2436 | spinlock_t watchdog_lock;
|
| 2437 | bool watchdog_ref_held;
|
| 2438 |
|
| 2439 | u32 proto_down_reason;
|
| 2440 |
|
| 2441 | struct list_head todo_list;
|
| 2442 |
|
| 2443 | #ifdef CONFIG_PCPU_DEV_REFCNT
|
| 2444 | int __percpu *pcpu_refcnt;
|
| 2445 | #else
|
| 2446 | refcount_t dev_refcnt;
|
| 2447 | #endif
|
| 2448 | struct ref_tracker_dir refcnt_tracker;
|
| 2449 |
|
| 2450 | struct list_head link_watch_list;
|
| 2451 |
|
| 2452 | u8 reg_state;
|
| 2453 |
|
| 2454 | bool dismantle;
|
| 2455 |
|
| 2456 |
|
| 2457 | bool moving_ns;
|
| 2458 |
|
| 2459 | bool rtnl_link_initializing;
|
| 2460 |
|
| 2461 | bool needs_free_netdev;
|
| 2462 | void (*priv_destructor)(struct net_device *dev);
|
| 2463 |
|
| 2464 |
|
| 2465 | void *ml_priv;
|
| 2466 | enum netdev_ml_priv_type ml_priv_type;
|
| 2467 |
|
| 2468 | #if IS_ENABLED(CONFIG_GARP)
|
| 2469 | struct garp_port __rcu *garp_port;
|
| 2470 | #endif
|
| 2471 | #if IS_ENABLED(CONFIG_MRP)
|
| 2472 | struct mrp_port __rcu *mrp_port;
|
| 2473 | #endif
|
| 2474 | #if IS_ENABLED(CONFIG_NET_DROP_MONITOR)
|
| 2475 | struct dm_hw_stat_delta __rcu *dm_private;
|
| 2476 | #endif
|
| 2477 | struct device dev;
|
| 2478 | const struct attribute_group *sysfs_groups[5];
|
| 2479 | const struct attribute_group *sysfs_rx_queue_group;
|
| 2480 |
|
| 2481 | const struct rtnl_link_ops *rtnl_link_ops;
|
| 2482 |
|
| 2483 | const struct netdev_stat_ops *stat_ops;
|
| 2484 |
|
| 2485 | const struct netdev_queue_mgmt_ops *queue_mgmt_ops;
|
| 2486 |
|
| 2487 |
|
| 2488 | #define GSO_MAX_SEGS 65535u
|
| 2489 | #define GSO_LEGACY_MAX_SIZE 65536u
|
| 2490 | |
| 2491 | * and shinfo->gso_segs is a 16bit field.
|
| 2492 |
|
| 2493 | #define GSO_MAX_SIZE (8 * GSO_MAX_SEGS)
|
| 2494 |
|
| 2495 | #define TSO_LEGACY_MAX_SIZE 65536
|
| 2496 | #define TSO_MAX_SIZE UINT_MAX
|
| 2497 | unsigned int tso_max_size;
|
| 2498 | #define TSO_MAX_SEGS U16_MAX
|
| 2499 | u16 tso_max_segs;
|
| 2500 |
|
| 2501 | #ifdef CONFIG_DCB
|
| 2502 | const struct dcbnl_rtnl_ops *dcbnl_ops;
|
| 2503 | #endif
|
| 2504 | u8 prio_tc_map[TC_BITMASK + 1];
|
| 2505 |
|
| 2506 | #if IS_ENABLED(CONFIG_FCOE)
|
| 2507 | unsigned int fcoe_ddp_xid;
|
| 2508 | #endif
|
| 2509 | #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO)
|
| 2510 | struct netprio_map __rcu *priomap;
|
| 2511 | #endif
|
| 2512 | struct phy_link_topology *link_topo;
|
| 2513 | struct phy_device *phydev;
|
| 2514 | struct sfp_bus *sfp_bus;
|
| 2515 | struct lock_class_key *qdisc_tx_busylock;
|
| 2516 | bool proto_down;
|
| 2517 | bool irq_affinity_auto;
|
| 2518 | bool rx_cpu_rmap_auto;
|
| 2519 |
|
| 2520 |
|
| 2521 | unsigned long see_all_hwtstamp_requests:1;
|
| 2522 | unsigned long change_proto_down:1;
|
| 2523 | unsigned long netns_immutable:1;
|
| 2524 | unsigned long fcoe_mtu:1;
|
| 2525 |
|
| 2526 | struct list_head net_notifier_list;
|
| 2527 |
|
| 2528 | #if IS_ENABLED(CONFIG_MACSEC)
|
| 2529 |
|
| 2530 | const struct macsec_ops *macsec_ops;
|
| 2531 | #endif
|
| 2532 | const struct udp_tunnel_nic_info *udp_tunnel_nic_info;
|
| 2533 | struct udp_tunnel_nic *udp_tunnel_nic;
|
| 2534 |
|
| 2535 |
|
| 2536 | struct netdev_config *cfg;
|
| 2537 | |
| 2538 | * @cfg_pending: same as @cfg but when device is being actively
|
| 2539 | * reconfigured includes any changes to the configuration
|
| 2540 | * requested by the user, but which may or may not be rejected.
|
| 2541 |
|
| 2542 | struct netdev_config *cfg_pending;
|
| 2543 | struct ethtool_netdev_state *ethtool;
|
| 2544 |
|
| 2545 |
|
| 2546 | struct bpf_xdp_entity xdp_state[__MAX_XDP_MODE];
|
| 2547 |
|
| 2548 | u8 dev_addr_shadow[MAX_ADDR_LEN];
|
| 2549 | netdevice_tracker linkwatch_dev_tracker;
|
| 2550 | netdevice_tracker watchdog_dev_tracker;
|
| 2551 | netdevice_tracker dev_registered_tracker;
|
| 2552 | struct rtnl_hw_stats64 *offload_xstats_l3;
|
| 2553 |
|
| 2554 | struct devlink_port *devlink_port;
|
| 2555 |
|
| 2556 | #if IS_ENABLED(CONFIG_DPLL)
|
| 2557 | struct dpll_pin __rcu *dpll_pin;
|
| 2558 | #endif
|
| 2559 | #if IS_ENABLED(CONFIG_PAGE_POOL)
|
| 2560 |
|
| 2561 | struct hlist_head page_pools;
|
| 2562 | #endif
|
| 2563 |
|
| 2564 |
|
| 2565 | struct dim_irq_moder *irq_moder;
|
| 2566 |
|
| 2567 | u64 max_pacing_offload_horizon;
|
| 2568 | struct napi_config *napi_config;
|
| 2569 | u32 num_napi_configs;
|
| 2570 | u32 napi_defer_hard_irqs;
|
| 2571 | unsigned long gro_flush_timeout;
|
| 2572 |
|
| 2573 | |
| 2574 | * @up: copy of @state's IFF_UP, but safe to read with just @lock.
|
| 2575 | * May report false negatives while the device is being opened
|
| 2576 | * or closed (@lock does not protect .ndo_open, or .ndo_close).
|
| 2577 |
|
| 2578 | bool up;
|
| 2579 |
|
| 2580 | |
| 2581 | * @request_ops_lock: request the core to run all @netdev_ops and
|
| 2582 | * @ethtool_ops under the @lock.
|
| 2583 |
|
| 2584 | bool request_ops_lock;
|
| 2585 |
|
| 2586 | |
| 2587 | * @lock: netdev-scope lock, protects a small selection of fields.
|
| 2588 | * Should always be taken using netdev_lock() / netdev_unlock() helpers.
|
| 2589 | * Drivers are free to use it for other protection.
|
| 2590 | *
|
| 2591 | * For the drivers that implement shaper or queue API, the scope
|
| 2592 | * of this lock is expanded to cover most ndo/queue/ethtool/sysfs
|
| 2593 | * operations. Drivers may opt-in to this behavior by setting
|
| 2594 | * @request_ops_lock.
|
| 2595 | *
|
| 2596 | * @lock protection mixes with rtnl_lock in multiple ways, fields are
|
| 2597 | * either:
|
| 2598 | *
|
| 2599 | * - simply protected by the instance @lock;
|
| 2600 | *
|
| 2601 | * - double protected - writers hold both locks, readers hold either;
|
| 2602 | *
|
| 2603 | * - ops protected - protected by the lock held around the NDOs
|
| 2604 | * and other callbacks, that is the instance lock on devices for
|
| 2605 | * which netdev_need_ops_lock() returns true, otherwise by rtnl_lock;
|
| 2606 | *
|
| 2607 | * - double ops protected - always protected by rtnl_lock but for
|
| 2608 | * devices for which netdev_need_ops_lock() returns true - also
|
| 2609 | * the instance lock.
|
| 2610 | *
|
| 2611 | * Simply protects:
|
| 2612 | * @gro_flush_timeout, @napi_defer_hard_irqs, @napi_list,
|
| 2613 | * @net_shaper_hierarchy, @reg_state, @threaded
|
| 2614 | *
|
| 2615 | * Double protects:
|
| 2616 | * @up, @moving_ns, @nd_net, @xdp_features
|
| 2617 | *
|
| 2618 | * Ops protects:
|
| 2619 | * @cfg, @cfg_pending, @ethtool, @hwprov
|
| 2620 | *
|
| 2621 | * Double ops protects:
|
| 2622 | * @real_num_rx_queues, @real_num_tx_queues
|
| 2623 | *
|
| 2624 | * Also protects some fields in:
|
| 2625 | * struct napi_struct, struct netdev_queue, struct netdev_rx_queue
|
| 2626 | *
|
| 2627 | * Ordering:
|
| 2628 | *
|
| 2629 | * - take after rtnl_lock
|
| 2630 | *
|
| 2631 | * - for the case of netdev queue leasing, the netdev-scope lock is
|
| 2632 | * taken for both the virtual and the physical device; to prevent
|
| 2633 | * deadlocks, the virtual device's lock must always be acquired
|
| 2634 | * before the physical device's (see netdev_nl_queue_create_doit)
|
| 2635 |
|
| 2636 | struct mutex lock;
|
| 2637 |
|
| 2638 | #if IS_ENABLED(CONFIG_NET_SHAPER)
|
| 2639 | |
| 2640 | * @net_shaper_hierarchy: data tracking the current shaper status
|
| 2641 | * see include/net/net_shapers.h
|
| 2642 |
|
| 2643 | struct net_shaper_hierarchy *net_shaper_hierarchy;
|
| 2644 | #endif
|
| 2645 |
|
| 2646 | struct hlist_head neighbours[NEIGH_NR_TABLES];
|
| 2647 |
|
| 2648 | struct hwtstamp_provider __rcu *hwprov;
|
| 2649 |
|
| 2650 | u8 priv[] ____cacheline_aligned
|
| 2651 | __counted_by(priv_len);
|
| 2652 | } ____cacheline_aligned;
|
| 2653 | #define to_net_dev(d) container_of(d, struct net_device, dev)
|
| 2654 |
|
| 2655 | |
| 2656 | * Driver should use this to assign devlink port instance to a netdevice
|
| 2657 | * before it registers the netdevice. Therefore devlink_port is static
|
| 2658 | * during the netdev lifetime after it is registered.
|
| 2659 |
|
| 2660 | #define SET_NETDEV_DEVLINK_PORT(dev, port) \
|
| 2661 | ({ \
|
| 2662 | WARN_ON((dev)->reg_state != NETREG_UNINITIALIZED); \
|
| 2663 | ((dev)->devlink_port = (port)); \
|
| 2664 | })
|
| 2665 |
|
| 2666 | static inline bool netif_elide_gro(const struct net_device *dev)
|
| 2667 | {
|
| 2668 | if (!(dev->features & NETIF_F_GRO) || dev->xdp_prog)
|
| 2669 | return true;
|
| 2670 | return false;
|
| 2671 | }
|
| 2672 |
|
| 2673 | #define NETDEV_ALIGN 32
|
| 2674 |
|
| 2675 | static inline
|
| 2676 | int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio)
|
| 2677 | {
|
| 2678 | return READ_ONCE(dev->prio_tc_map[prio & TC_BITMASK]);
|
| 2679 | }
|
| 2680 |
|
| 2681 | static inline
|
| 2682 | int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc)
|
| 2683 | {
|
| 2684 | if (tc >= READ_ONCE(dev->num_tc))
|
| 2685 | return -EINVAL;
|
| 2686 |
|
| 2687 | WRITE_ONCE(dev->prio_tc_map[prio & TC_BITMASK], tc & TC_BITMASK);
|
| 2688 | return 0;
|
| 2689 | }
|
| 2690 |
|
| 2691 | int netdev_txq_to_tc(struct net_device *dev, unsigned int txq);
|
| 2692 | void netdev_reset_tc(struct net_device *dev);
|
| 2693 | int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset);
|
| 2694 | int netdev_set_num_tc(struct net_device *dev, u8 num_tc);
|
| 2695 |
|
| 2696 | static inline
|
| 2697 | int netdev_get_num_tc(const struct net_device *dev)
|
| 2698 | {
|
| 2699 | return READ_ONCE(dev->num_tc);
|
| 2700 | }
|
| 2701 |
|
| 2702 | static inline void net_prefetch(void *p)
|
| 2703 | {
|
| 2704 | prefetch(p);
|
| 2705 | #if L1_CACHE_BYTES < 128
|
| 2706 | prefetch((u8 *)p + L1_CACHE_BYTES);
|
| 2707 | #endif
|
| 2708 | }
|
| 2709 |
|
| 2710 | static inline void net_prefetchw(void *p)
|
| 2711 | {
|
| 2712 | prefetchw(p);
|
| 2713 | #if L1_CACHE_BYTES < 128
|
| 2714 | prefetchw((u8 *)p + L1_CACHE_BYTES);
|
| 2715 | #endif
|
| 2716 | }
|
| 2717 |
|
| 2718 | void netdev_unbind_sb_channel(struct net_device *dev,
|
| 2719 | struct net_device *sb_dev);
|
| 2720 | int netdev_bind_sb_channel_queue(struct net_device *dev,
|
| 2721 | struct net_device *sb_dev,
|
| 2722 | u8 tc, u16 count, u16 offset);
|
| 2723 | int netdev_set_sb_channel(struct net_device *dev, u16 channel);
|
| 2724 | static inline int netdev_get_sb_channel(struct net_device *dev)
|
| 2725 | {
|
| 2726 | return max_t(int, -READ_ONCE(dev->num_tc), 0);
|
| 2727 | }
|
| 2728 |
|
| 2729 | static inline
|
| 2730 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev,
|
| 2731 | unsigned int index)
|
| 2732 | {
|
| 2733 | DEBUG_NET_WARN_ON_ONCE(index >= dev->num_tx_queues);
|
| 2734 | return &dev->_tx[index];
|
| 2735 | }
|
| 2736 |
|
| 2737 | static inline struct netdev_queue *skb_get_tx_queue(const struct net_device *dev,
|
| 2738 | const struct sk_buff *skb)
|
| 2739 | {
|
| 2740 | return netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
|
| 2741 | }
|
| 2742 |
|
| 2743 | static inline void netdev_for_each_tx_queue(struct net_device *dev,
|
| 2744 | void (*f)(struct net_device *,
|
| 2745 | struct netdev_queue *,
|
| 2746 | void *),
|
| 2747 | void *arg)
|
| 2748 | {
|
| 2749 | unsigned int i;
|
| 2750 |
|
| 2751 | for (i = 0; i < dev->num_tx_queues; i++)
|
| 2752 | f(dev, &dev->_tx[i], arg);
|
| 2753 | }
|
| 2754 |
|
| 2755 | u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
|
| 2756 | struct net_device *sb_dev);
|
| 2757 | struct netdev_queue *netdev_core_pick_tx(struct net_device *dev,
|
| 2758 | struct sk_buff *skb,
|
| 2759 | struct net_device *sb_dev);
|
| 2760 |
|
| 2761 | |
| 2762 | * when forwarding to this dev
|
| 2763 |
|
| 2764 | static inline unsigned netdev_get_fwd_headroom(struct net_device *dev)
|
| 2765 | {
|
| 2766 | return dev->priv_flags & IFF_PHONY_HEADROOM ? 0 : dev->needed_headroom;
|
| 2767 | }
|
| 2768 |
|
| 2769 | static inline void netdev_set_rx_headroom(struct net_device *dev, int new_hr)
|
| 2770 | {
|
| 2771 | if (dev->netdev_ops->ndo_set_rx_headroom)
|
| 2772 | dev->netdev_ops->ndo_set_rx_headroom(dev, new_hr);
|
| 2773 | }
|
| 2774 |
|
| 2775 |
|
| 2776 | static inline void netdev_reset_rx_headroom(struct net_device *dev)
|
| 2777 | {
|
| 2778 | netdev_set_rx_headroom(dev, -1);
|
| 2779 | }
|
| 2780 |
|
| 2781 | static inline void *netdev_get_ml_priv(struct net_device *dev,
|
| 2782 | enum netdev_ml_priv_type type)
|
| 2783 | {
|
| 2784 | if (dev->ml_priv_type != type)
|
| 2785 | return NULL;
|
| 2786 |
|
| 2787 | return dev->ml_priv;
|
| 2788 | }
|
| 2789 |
|
| 2790 | static inline void netdev_set_ml_priv(struct net_device *dev,
|
| 2791 | void *ml_priv,
|
| 2792 | enum netdev_ml_priv_type type)
|
| 2793 | {
|
| 2794 | WARN(dev->ml_priv_type && dev->ml_priv_type != type,
|
| 2795 | "Overwriting already set ml_priv_type (%u) with different ml_priv_type (%u)!\n",
|
| 2796 | dev->ml_priv_type, type);
|
| 2797 | WARN(!dev->ml_priv_type && dev->ml_priv,
|
| 2798 | "Overwriting already set ml_priv and ml_priv_type is ML_PRIV_NONE!\n");
|
| 2799 |
|
| 2800 | dev->ml_priv = ml_priv;
|
| 2801 | dev->ml_priv_type = type;
|
| 2802 | }
|
| 2803 |
|
| 2804 | |
| 2805 | * Net namespace inlines
|
| 2806 |
|
| 2807 | static inline
|
| 2808 | struct net *dev_net(const struct net_device *dev)
|
| 2809 | {
|
| 2810 | return read_pnet(&dev->nd_net);
|
| 2811 | }
|
| 2812 |
|
| 2813 | static inline
|
| 2814 | struct net *dev_net_rcu(const struct net_device *dev)
|
| 2815 | {
|
| 2816 | return read_pnet_rcu(&dev->nd_net);
|
| 2817 | }
|
| 2818 |
|
| 2819 | static inline
|
| 2820 | void dev_net_set(struct net_device *dev, struct net *net)
|
| 2821 | {
|
| 2822 | write_pnet(&dev->nd_net, net);
|
| 2823 | }
|
| 2824 |
|
| 2825 | |
| 2826 | * netdev_priv - access network device private data
|
| 2827 | * @dev: network device
|
| 2828 | *
|
| 2829 | * Get network device private data
|
| 2830 |
|
| 2831 | static inline void *netdev_priv(const struct net_device *dev)
|
| 2832 | {
|
| 2833 | return (void *)dev->priv;
|
| 2834 | }
|
| 2835 |
|
| 2836 | |
| 2837 | * netdev_from_priv() - get network device from priv
|
| 2838 | * @priv: network device private data
|
| 2839 | *
|
| 2840 | * Returns: net_device to which @priv belongs
|
| 2841 |
|
| 2842 | static inline struct net_device *netdev_from_priv(const void *priv)
|
| 2843 | {
|
| 2844 | return container_of(priv, struct net_device, priv);
|
| 2845 | }
|
| 2846 |
|
| 2847 | |
| 2848 | * if set prior to registration will cause a symlink during initialization.
|
| 2849 |
|
| 2850 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
|
| 2851 |
|
| 2852 | |
| 2853 | * fine-grained identification of different network device types. For
|
| 2854 | * example Ethernet, Wireless LAN, Bluetooth, WiMAX etc.
|
| 2855 |
|
| 2856 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype))
|
| 2857 |
|
| 2858 | void netif_queue_set_napi(struct net_device *dev, unsigned int queue_index,
|
| 2859 | enum netdev_queue_type type,
|
| 2860 | struct napi_struct *napi);
|
| 2861 |
|
| 2862 | static inline void netdev_lock(struct net_device *dev)
|
| 2863 | {
|
| 2864 | mutex_lock(&dev->lock);
|
| 2865 | }
|
| 2866 |
|
| 2867 | static inline void netdev_unlock(struct net_device *dev)
|
| 2868 | {
|
| 2869 | mutex_unlock(&dev->lock);
|
| 2870 | }
|
| 2871 |
|
| 2872 |
|
| 2873 | void netif_napi_set_irq_locked(struct napi_struct *napi, int irq);
|
| 2874 |
|
| 2875 | static inline void netif_napi_set_irq(struct napi_struct *napi, int irq)
|
| 2876 | {
|
| 2877 | netdev_lock(napi->dev);
|
| 2878 | netif_napi_set_irq_locked(napi, irq);
|
| 2879 | netdev_unlock(napi->dev);
|
| 2880 | }
|
| 2881 |
|
| 2882 | |
| 2883 | * Device drivers are strongly advised to not use bigger value
|
| 2884 |
|
| 2885 | #define NAPI_POLL_WEIGHT 64
|
| 2886 |
|
| 2887 | void netif_napi_add_weight_locked(struct net_device *dev,
|
| 2888 | struct napi_struct *napi,
|
| 2889 | int (*poll)(struct napi_struct *, int),
|
| 2890 | int weight);
|
| 2891 |
|
| 2892 | static inline void
|
| 2893 | netif_napi_add_weight(struct net_device *dev, struct napi_struct *napi,
|
| 2894 | int (*poll)(struct napi_struct *, int), int weight)
|
| 2895 | {
|
| 2896 | netdev_lock(dev);
|
| 2897 | netif_napi_add_weight_locked(dev, napi, poll, weight);
|
| 2898 | netdev_unlock(dev);
|
| 2899 | }
|
| 2900 |
|
| 2901 | |
| 2902 | * netif_napi_add() - initialize a NAPI context
|
| 2903 | * @dev: network device
|
| 2904 | * @napi: NAPI context
|
| 2905 | * @poll: polling function
|
| 2906 | *
|
| 2907 | * netif_napi_add() must be used to initialize a NAPI context prior to calling
|
| 2908 | * *any* of the other NAPI-related functions.
|
| 2909 |
|
| 2910 | static inline void
|
| 2911 | netif_napi_add(struct net_device *dev, struct napi_struct *napi,
|
| 2912 | int (*poll)(struct napi_struct *, int))
|
| 2913 | {
|
| 2914 | netif_napi_add_weight(dev, napi, poll, NAPI_POLL_WEIGHT);
|
| 2915 | }
|
| 2916 |
|
| 2917 | static inline void
|
| 2918 | netif_napi_add_locked(struct net_device *dev, struct napi_struct *napi,
|
| 2919 | int (*poll)(struct napi_struct *, int))
|
| 2920 | {
|
| 2921 | netif_napi_add_weight_locked(dev, napi, poll, NAPI_POLL_WEIGHT);
|
| 2922 | }
|
| 2923 |
|
| 2924 | static inline void
|
| 2925 | netif_napi_add_tx_weight(struct net_device *dev,
|
| 2926 | struct napi_struct *napi,
|
| 2927 | int (*poll)(struct napi_struct *, int),
|
| 2928 | int weight)
|
| 2929 | {
|
| 2930 | set_bit(NAPI_STATE_NO_BUSY_POLL, &napi->state);
|
| 2931 | netif_napi_add_weight(dev, napi, poll, weight);
|
| 2932 | }
|
| 2933 |
|
| 2934 | static inline void
|
| 2935 | netif_napi_add_config_locked(struct net_device *dev, struct napi_struct *napi,
|
| 2936 | int (*poll)(struct napi_struct *, int), int index)
|
| 2937 | {
|
| 2938 | napi->index = index;
|
| 2939 | napi->config = &dev->napi_config[index];
|
| 2940 | netif_napi_add_weight_locked(dev, napi, poll, NAPI_POLL_WEIGHT);
|
| 2941 | }
|
| 2942 |
|
| 2943 | |
| 2944 | * netif_napi_add_config - initialize a NAPI context with persistent config
|
| 2945 | * @dev: network device
|
| 2946 | * @napi: NAPI context
|
| 2947 | * @poll: polling function
|
| 2948 | * @index: the NAPI index
|
| 2949 |
|
| 2950 | static inline void
|
| 2951 | netif_napi_add_config(struct net_device *dev, struct napi_struct *napi,
|
| 2952 | int (*poll)(struct napi_struct *, int), int index)
|
| 2953 | {
|
| 2954 | netdev_lock(dev);
|
| 2955 | netif_napi_add_config_locked(dev, napi, poll, index);
|
| 2956 | netdev_unlock(dev);
|
| 2957 | }
|
| 2958 |
|
| 2959 | |
| 2960 | * netif_napi_add_tx() - initialize a NAPI context to be used for Tx only
|
| 2961 | * @dev: network device
|
| 2962 | * @napi: NAPI context
|
| 2963 | * @poll: polling function
|
| 2964 | *
|
| 2965 | * This variant of netif_napi_add() should be used from drivers using NAPI
|
| 2966 | * to exclusively poll a TX queue.
|
| 2967 | * This will avoid we add it into napi_hash[], thus polluting this hash table.
|
| 2968 |
|
| 2969 | static inline void netif_napi_add_tx(struct net_device *dev,
|
| 2970 | struct napi_struct *napi,
|
| 2971 | int (*poll)(struct napi_struct *, int))
|
| 2972 | {
|
| 2973 | netif_napi_add_tx_weight(dev, napi, poll, NAPI_POLL_WEIGHT);
|
| 2974 | }
|
| 2975 |
|
| 2976 | void __netif_napi_del_locked(struct napi_struct *napi);
|
| 2977 |
|
| 2978 | |
| 2979 | * __netif_napi_del - remove a NAPI context
|
| 2980 | * @napi: NAPI context
|
| 2981 | *
|
| 2982 | * Warning: caller must observe RCU grace period before freeing memory
|
| 2983 | * containing @napi. Drivers might want to call this helper to combine
|
| 2984 | * all the needed RCU grace periods into a single one.
|
| 2985 |
|
| 2986 | static inline void __netif_napi_del(struct napi_struct *napi)
|
| 2987 | {
|
| 2988 | netdev_lock(napi->dev);
|
| 2989 | __netif_napi_del_locked(napi);
|
| 2990 | netdev_unlock(napi->dev);
|
| 2991 | }
|
| 2992 |
|
| 2993 | static inline void netif_napi_del_locked(struct napi_struct *napi)
|
| 2994 | {
|
| 2995 | __netif_napi_del_locked(napi);
|
| 2996 | synchronize_net();
|
| 2997 | }
|
| 2998 |
|
| 2999 | |
| 3000 | * netif_napi_del - remove a NAPI context
|
| 3001 | * @napi: NAPI context
|
| 3002 | *
|
| 3003 | * netif_napi_del() removes a NAPI context from the network device NAPI list
|
| 3004 |
|
| 3005 | static inline void netif_napi_del(struct napi_struct *napi)
|
| 3006 | {
|
| 3007 | __netif_napi_del(napi);
|
| 3008 | synchronize_net();
|
| 3009 | }
|
| 3010 |
|
| 3011 | int netif_enable_cpu_rmap(struct net_device *dev, unsigned int num_irqs);
|
| 3012 | void netif_set_affinity_auto(struct net_device *dev);
|
| 3013 |
|
| 3014 | struct packet_type {
|
| 3015 | __be16 type;
|
| 3016 | bool ignore_outgoing;
|
| 3017 | struct net_device *dev;
|
| 3018 | netdevice_tracker dev_tracker;
|
| 3019 | int (*func) (struct sk_buff *,
|
| 3020 | struct net_device *,
|
| 3021 | struct packet_type *,
|
| 3022 | struct net_device *);
|
| 3023 | void (*list_func) (struct list_head *,
|
| 3024 | struct packet_type *,
|
| 3025 | struct net_device *);
|
| 3026 | bool (*id_match)(struct packet_type *ptype,
|
| 3027 | struct sock *sk);
|
| 3028 | struct net *af_packet_net;
|
| 3029 | void *af_packet_priv;
|
| 3030 | struct list_head list;
|
| 3031 | };
|
| 3032 |
|
| 3033 | struct offload_callbacks {
|
| 3034 | struct sk_buff *(*gso_segment)(struct sk_buff *skb,
|
| 3035 | netdev_features_t features);
|
| 3036 | struct sk_buff *(*gro_receive)(struct list_head *head,
|
| 3037 | struct sk_buff *skb);
|
| 3038 | int (*gro_complete)(struct sk_buff *skb, int nhoff);
|
| 3039 | };
|
| 3040 |
|
| 3041 | struct packet_offload {
|
| 3042 | __be16 type;
|
| 3043 | u16 priority;
|
| 3044 | struct offload_callbacks callbacks;
|
| 3045 | struct list_head list;
|
| 3046 | };
|
| 3047 |
|
| 3048 |
|
| 3049 | struct pcpu_sw_netstats {
|
| 3050 | u64_stats_t rx_packets;
|
| 3051 | u64_stats_t rx_bytes;
|
| 3052 | u64_stats_t tx_packets;
|
| 3053 | u64_stats_t tx_bytes;
|
| 3054 | struct u64_stats_sync syncp;
|
| 3055 | } __aligned(4 * sizeof(u64));
|
| 3056 |
|
| 3057 | struct pcpu_dstats {
|
| 3058 | u64_stats_t rx_packets;
|
| 3059 | u64_stats_t rx_bytes;
|
| 3060 | u64_stats_t tx_packets;
|
| 3061 | u64_stats_t tx_bytes;
|
| 3062 | u64_stats_t rx_drops;
|
| 3063 | u64_stats_t tx_drops;
|
| 3064 | struct u64_stats_sync syncp;
|
| 3065 | } __aligned(8 * sizeof(u64));
|
| 3066 |
|
| 3067 | struct pcpu_lstats {
|
| 3068 | u64_stats_t packets;
|
| 3069 | u64_stats_t bytes;
|
| 3070 | struct u64_stats_sync syncp;
|
| 3071 | } __aligned(2 * sizeof(u64));
|
| 3072 |
|
| 3073 | void dev_lstats_read(struct net_device *dev, u64 *packets, u64 *bytes);
|
| 3074 |
|
| 3075 | static inline void dev_sw_netstats_rx_add(struct net_device *dev, unsigned int len)
|
| 3076 | {
|
| 3077 | struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);
|
| 3078 |
|
| 3079 | u64_stats_update_begin(&tstats->syncp);
|
| 3080 | u64_stats_add(&tstats->rx_bytes, len);
|
| 3081 | u64_stats_inc(&tstats->rx_packets);
|
| 3082 | u64_stats_update_end(&tstats->syncp);
|
| 3083 | }
|
| 3084 |
|
| 3085 | static inline void dev_sw_netstats_tx_add(struct net_device *dev,
|
| 3086 | unsigned int packets,
|
| 3087 | unsigned int len)
|
| 3088 | {
|
| 3089 | struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);
|
| 3090 |
|
| 3091 | u64_stats_update_begin(&tstats->syncp);
|
| 3092 | u64_stats_add(&tstats->tx_bytes, len);
|
| 3093 | u64_stats_add(&tstats->tx_packets, packets);
|
| 3094 | u64_stats_update_end(&tstats->syncp);
|
| 3095 | }
|
| 3096 |
|
| 3097 | static inline void dev_lstats_add(struct net_device *dev, unsigned int len)
|
| 3098 | {
|
| 3099 | struct pcpu_lstats *lstats = this_cpu_ptr(dev->lstats);
|
| 3100 |
|
| 3101 | u64_stats_update_begin(&lstats->syncp);
|
| 3102 | u64_stats_add(&lstats->bytes, len);
|
| 3103 | u64_stats_inc(&lstats->packets);
|
| 3104 | u64_stats_update_end(&lstats->syncp);
|
| 3105 | }
|
| 3106 |
|
| 3107 | static inline void dev_dstats_rx_add(struct net_device *dev,
|
| 3108 | unsigned int len)
|
| 3109 | {
|
| 3110 | struct pcpu_dstats *dstats = this_cpu_ptr(dev->dstats);
|
| 3111 |
|
| 3112 | u64_stats_update_begin(&dstats->syncp);
|
| 3113 | u64_stats_inc(&dstats->rx_packets);
|
| 3114 | u64_stats_add(&dstats->rx_bytes, len);
|
| 3115 | u64_stats_update_end(&dstats->syncp);
|
| 3116 | }
|
| 3117 |
|
| 3118 | static inline void dev_dstats_rx_dropped(struct net_device *dev)
|
| 3119 | {
|
| 3120 | struct pcpu_dstats *dstats = this_cpu_ptr(dev->dstats);
|
| 3121 |
|
| 3122 | u64_stats_update_begin(&dstats->syncp);
|
| 3123 | u64_stats_inc(&dstats->rx_drops);
|
| 3124 | u64_stats_update_end(&dstats->syncp);
|
| 3125 | }
|
| 3126 |
|
| 3127 | static inline void dev_dstats_rx_dropped_add(struct net_device *dev,
|
| 3128 | unsigned int packets)
|
| 3129 | {
|
| 3130 | struct pcpu_dstats *dstats = this_cpu_ptr(dev->dstats);
|
| 3131 |
|
| 3132 | u64_stats_update_begin(&dstats->syncp);
|
| 3133 | u64_stats_add(&dstats->rx_drops, packets);
|
| 3134 | u64_stats_update_end(&dstats->syncp);
|
| 3135 | }
|
| 3136 |
|
| 3137 | static inline void dev_dstats_tx_add(struct net_device *dev,
|
| 3138 | unsigned int len)
|
| 3139 | {
|
| 3140 | struct pcpu_dstats *dstats = this_cpu_ptr(dev->dstats);
|
| 3141 |
|
| 3142 | u64_stats_update_begin(&dstats->syncp);
|
| 3143 | u64_stats_inc(&dstats->tx_packets);
|
| 3144 | u64_stats_add(&dstats->tx_bytes, len);
|
| 3145 | u64_stats_update_end(&dstats->syncp);
|
| 3146 | }
|
| 3147 |
|
| 3148 | static inline void dev_dstats_tx_dropped(struct net_device *dev)
|
| 3149 | {
|
| 3150 | struct pcpu_dstats *dstats = this_cpu_ptr(dev->dstats);
|
| 3151 |
|
| 3152 | u64_stats_update_begin(&dstats->syncp);
|
| 3153 | u64_stats_inc(&dstats->tx_drops);
|
| 3154 | u64_stats_update_end(&dstats->syncp);
|
| 3155 | }
|
| 3156 |
|
| 3157 | #define __netdev_alloc_pcpu_stats(type, gfp) \
|
| 3158 | ({ \
|
| 3159 | typeof(type) __percpu *pcpu_stats = alloc_percpu_gfp(type, gfp);\
|
| 3160 | if (pcpu_stats) { \
|
| 3161 | int __cpu; \
|
| 3162 | for_each_possible_cpu(__cpu) { \
|
| 3163 | typeof(type) *stat; \
|
| 3164 | stat = per_cpu_ptr(pcpu_stats, __cpu); \
|
| 3165 | u64_stats_init(&stat->syncp); \
|
| 3166 | } \
|
| 3167 | } \
|
| 3168 | pcpu_stats; \
|
| 3169 | })
|
| 3170 |
|
| 3171 | #define netdev_alloc_pcpu_stats(type) \
|
| 3172 | __netdev_alloc_pcpu_stats(type, GFP_KERNEL)
|
| 3173 |
|
| 3174 | #define devm_netdev_alloc_pcpu_stats(dev, type) \
|
| 3175 | ({ \
|
| 3176 | typeof(type) __percpu *pcpu_stats = devm_alloc_percpu(dev, type);\
|
| 3177 | if (pcpu_stats) { \
|
| 3178 | int __cpu; \
|
| 3179 | for_each_possible_cpu(__cpu) { \
|
| 3180 | typeof(type) *stat; \
|
| 3181 | stat = per_cpu_ptr(pcpu_stats, __cpu); \
|
| 3182 | u64_stats_init(&stat->syncp); \
|
| 3183 | } \
|
| 3184 | } \
|
| 3185 | pcpu_stats; \
|
| 3186 | })
|
| 3187 |
|
| 3188 | enum netdev_lag_tx_type {
|
| 3189 | NETDEV_LAG_TX_TYPE_UNKNOWN,
|
| 3190 | NETDEV_LAG_TX_TYPE_RANDOM,
|
| 3191 | NETDEV_LAG_TX_TYPE_BROADCAST,
|
| 3192 | NETDEV_LAG_TX_TYPE_ROUNDROBIN,
|
| 3193 | NETDEV_LAG_TX_TYPE_ACTIVEBACKUP,
|
| 3194 | NETDEV_LAG_TX_TYPE_HASH,
|
| 3195 | };
|
| 3196 |
|
| 3197 | enum netdev_lag_hash {
|
| 3198 | NETDEV_LAG_HASH_NONE,
|
| 3199 | NETDEV_LAG_HASH_L2,
|
| 3200 | NETDEV_LAG_HASH_L34,
|
| 3201 | NETDEV_LAG_HASH_L23,
|
| 3202 | NETDEV_LAG_HASH_E23,
|
| 3203 | NETDEV_LAG_HASH_E34,
|
| 3204 | NETDEV_LAG_HASH_VLAN_SRCMAC,
|
| 3205 | NETDEV_LAG_HASH_UNKNOWN,
|
| 3206 | };
|
| 3207 |
|
| 3208 | struct netdev_lag_upper_info {
|
| 3209 | enum netdev_lag_tx_type tx_type;
|
| 3210 | enum netdev_lag_hash hash_type;
|
| 3211 | };
|
| 3212 |
|
| 3213 | struct netdev_lag_lower_state_info {
|
| 3214 | u8 link_up : 1,
|
| 3215 | tx_enabled : 1;
|
| 3216 | };
|
| 3217 |
|
| 3218 | #include <linux/notifier.h>
|
| 3219 |
|
| 3220 | |
| 3221 | * and the rtnetlink notification exclusion list in rtnetlink_event() when
|
| 3222 | * adding new types.
|
| 3223 |
|
| 3224 | enum netdev_cmd {
|
| 3225 | NETDEV_UP = 1,
|
| 3226 | NETDEV_DOWN,
|
| 3227 | NETDEV_REBOOT, |
| 3228 | detected a hardware crash and restarted
|
| 3229 | - we can use this eg to kick tcp sessions
|
| 3230 | once done
|
| 3231 | NETDEV_CHANGE,
|
| 3232 | NETDEV_REGISTER,
|
| 3233 | NETDEV_UNREGISTER,
|
| 3234 | NETDEV_CHANGEMTU,
|
| 3235 | NETDEV_CHANGEADDR,
|
| 3236 | NETDEV_PRE_CHANGEADDR,
|
| 3237 | NETDEV_GOING_DOWN,
|
| 3238 | NETDEV_CHANGENAME,
|
| 3239 | NETDEV_FEAT_CHANGE,
|
| 3240 | NETDEV_BONDING_FAILOVER,
|
| 3241 | NETDEV_PRE_UP,
|
| 3242 | NETDEV_PRE_TYPE_CHANGE,
|
| 3243 | NETDEV_POST_TYPE_CHANGE,
|
| 3244 | NETDEV_POST_INIT,
|
| 3245 | NETDEV_PRE_UNINIT,
|
| 3246 | NETDEV_RELEASE,
|
| 3247 | NETDEV_NOTIFY_PEERS,
|
| 3248 | NETDEV_JOIN,
|
| 3249 | NETDEV_CHANGEUPPER,
|
| 3250 | NETDEV_RESEND_IGMP,
|
| 3251 | NETDEV_PRECHANGEMTU,
|
| 3252 | NETDEV_CHANGEINFODATA,
|
| 3253 | NETDEV_BONDING_INFO,
|
| 3254 | NETDEV_PRECHANGEUPPER,
|
| 3255 | NETDEV_CHANGELOWERSTATE,
|
| 3256 | NETDEV_UDP_TUNNEL_PUSH_INFO,
|
| 3257 | NETDEV_UDP_TUNNEL_DROP_INFO,
|
| 3258 | NETDEV_CHANGE_TX_QUEUE_LEN,
|
| 3259 | NETDEV_CVLAN_FILTER_PUSH_INFO,
|
| 3260 | NETDEV_CVLAN_FILTER_DROP_INFO,
|
| 3261 | NETDEV_SVLAN_FILTER_PUSH_INFO,
|
| 3262 | NETDEV_SVLAN_FILTER_DROP_INFO,
|
| 3263 | NETDEV_OFFLOAD_XSTATS_ENABLE,
|
| 3264 | NETDEV_OFFLOAD_XSTATS_DISABLE,
|
| 3265 | NETDEV_OFFLOAD_XSTATS_REPORT_USED,
|
| 3266 | NETDEV_OFFLOAD_XSTATS_REPORT_DELTA,
|
| 3267 | NETDEV_XDP_FEAT_CHANGE,
|
| 3268 | };
|
| 3269 | const char *netdev_cmd_to_name(enum netdev_cmd cmd);
|
| 3270 |
|
| 3271 | int register_netdevice_notifier(struct notifier_block *nb);
|
| 3272 | int unregister_netdevice_notifier(struct notifier_block *nb);
|
| 3273 | int register_netdevice_notifier_net(struct net *net, struct notifier_block *nb);
|
| 3274 | int unregister_netdevice_notifier_net(struct net *net,
|
| 3275 | struct notifier_block *nb);
|
| 3276 | int register_netdevice_notifier_dev_net(struct net_device *dev,
|
| 3277 | struct notifier_block *nb,
|
| 3278 | struct netdev_net_notifier *nn);
|
| 3279 | int unregister_netdevice_notifier_dev_net(struct net_device *dev,
|
| 3280 | struct notifier_block *nb,
|
| 3281 | struct netdev_net_notifier *nn);
|
| 3282 |
|
| 3283 | struct netdev_notifier_info {
|
| 3284 | struct net_device *dev;
|
| 3285 | struct netlink_ext_ack *extack;
|
| 3286 | };
|
| 3287 |
|
| 3288 | struct netdev_notifier_info_ext {
|
| 3289 | struct netdev_notifier_info info;
|
| 3290 | union {
|
| 3291 | u32 mtu;
|
| 3292 | } ext;
|
| 3293 | };
|
| 3294 |
|
| 3295 | struct netdev_notifier_change_info {
|
| 3296 | struct netdev_notifier_info info;
|
| 3297 | unsigned int flags_changed;
|
| 3298 | };
|
| 3299 |
|
| 3300 | struct netdev_notifier_changeupper_info {
|
| 3301 | struct netdev_notifier_info info;
|
| 3302 | struct net_device *upper_dev;
|
| 3303 | bool master;
|
| 3304 | bool linking;
|
| 3305 | void *upper_info;
|
| 3306 | };
|
| 3307 |
|
| 3308 | struct netdev_notifier_changelowerstate_info {
|
| 3309 | struct netdev_notifier_info info;
|
| 3310 | void *lower_state_info;
|
| 3311 | };
|
| 3312 |
|
| 3313 | struct netdev_notifier_pre_changeaddr_info {
|
| 3314 | struct netdev_notifier_info info;
|
| 3315 | const unsigned char *dev_addr;
|
| 3316 | };
|
| 3317 |
|
| 3318 | enum netdev_offload_xstats_type {
|
| 3319 | NETDEV_OFFLOAD_XSTATS_TYPE_L3 = 1,
|
| 3320 | };
|
| 3321 |
|
| 3322 | struct netdev_notifier_offload_xstats_info {
|
| 3323 | struct netdev_notifier_info info;
|
| 3324 | enum netdev_offload_xstats_type type;
|
| 3325 |
|
| 3326 | union {
|
| 3327 |
|
| 3328 | struct netdev_notifier_offload_xstats_rd *report_delta;
|
| 3329 |
|
| 3330 | struct netdev_notifier_offload_xstats_ru *report_used;
|
| 3331 | };
|
| 3332 | };
|
| 3333 |
|
| 3334 | int netdev_offload_xstats_enable(struct net_device *dev,
|
| 3335 | enum netdev_offload_xstats_type type,
|
| 3336 | struct netlink_ext_ack *extack);
|
| 3337 | int netdev_offload_xstats_disable(struct net_device *dev,
|
| 3338 | enum netdev_offload_xstats_type type);
|
| 3339 | bool netdev_offload_xstats_enabled(const struct net_device *dev,
|
| 3340 | enum netdev_offload_xstats_type type);
|
| 3341 | int netdev_offload_xstats_get(struct net_device *dev,
|
| 3342 | enum netdev_offload_xstats_type type,
|
| 3343 | struct rtnl_hw_stats64 *stats, bool *used,
|
| 3344 | struct netlink_ext_ack *extack);
|
| 3345 | void
|
| 3346 | netdev_offload_xstats_report_delta(struct netdev_notifier_offload_xstats_rd *rd,
|
| 3347 | const struct rtnl_hw_stats64 *stats);
|
| 3348 | void
|
| 3349 | netdev_offload_xstats_report_used(struct netdev_notifier_offload_xstats_ru *ru);
|
| 3350 | void netdev_offload_xstats_push_delta(struct net_device *dev,
|
| 3351 | enum netdev_offload_xstats_type type,
|
| 3352 | const struct rtnl_hw_stats64 *stats);
|
| 3353 |
|
| 3354 | static inline void netdev_notifier_info_init(struct netdev_notifier_info *info,
|
| 3355 | struct net_device *dev)
|
| 3356 | {
|
| 3357 | info->dev = dev;
|
| 3358 | info->extack = NULL;
|
| 3359 | }
|
| 3360 |
|
| 3361 | static inline struct net_device *
|
| 3362 | netdev_notifier_info_to_dev(const struct netdev_notifier_info *info)
|
| 3363 | {
|
| 3364 | return info->dev;
|
| 3365 | }
|
| 3366 |
|
| 3367 | static inline struct netlink_ext_ack *
|
| 3368 | netdev_notifier_info_to_extack(const struct netdev_notifier_info *info)
|
| 3369 | {
|
| 3370 | return info->extack;
|
| 3371 | }
|
| 3372 |
|
| 3373 | int call_netdevice_notifiers(unsigned long val, struct net_device *dev);
|
| 3374 | int call_netdevice_notifiers_info(unsigned long val,
|
| 3375 | struct netdev_notifier_info *info);
|
| 3376 |
|
| 3377 | #define for_each_netdev(net, d) \
|
| 3378 | list_for_each_entry(d, &(net)->dev_base_head, dev_list)
|
| 3379 | #define for_each_netdev_reverse(net, d) \
|
| 3380 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list)
|
| 3381 | #define for_each_netdev_rcu(net, d) \
|
| 3382 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list)
|
| 3383 | #define for_each_netdev_safe(net, d, n) \
|
| 3384 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
|
| 3385 | #define for_each_netdev_continue(net, d) \
|
| 3386 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
|
| 3387 | #define for_each_netdev_continue_reverse(net, d) \
|
| 3388 | list_for_each_entry_continue_reverse(d, &(net)->dev_base_head, \
|
| 3389 | dev_list)
|
| 3390 | #define for_each_netdev_continue_rcu(net, d) \
|
| 3391 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list)
|
| 3392 | #define for_each_netdev_in_bond_rcu(bond, slave) \
|
| 3393 | for_each_netdev_rcu(dev_net_rcu(bond), slave) \
|
| 3394 | if (netdev_master_upper_dev_get_rcu(slave) == (bond))
|
| 3395 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
|
| 3396 |
|
| 3397 | #define for_each_netdev_dump(net, d, ifindex) \
|
| 3398 | for (; (d = xa_find(&(net)->dev_by_index, &ifindex, \
|
| 3399 | ULONG_MAX, XA_PRESENT)); ifindex++)
|
| 3400 |
|
| 3401 | static inline struct net_device *next_net_device(struct net_device *dev)
|
| 3402 | {
|
| 3403 | struct list_head *lh;
|
| 3404 | struct net *net;
|
| 3405 |
|
| 3406 | net = dev_net(dev);
|
| 3407 | lh = dev->dev_list.next;
|
| 3408 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
|
| 3409 | }
|
| 3410 |
|
| 3411 | static inline struct net_device *next_net_device_rcu(struct net_device *dev)
|
| 3412 | {
|
| 3413 | struct list_head *lh;
|
| 3414 | struct net *net;
|
| 3415 |
|
| 3416 | net = dev_net(dev);
|
| 3417 | lh = rcu_dereference(list_next_rcu(&dev->dev_list));
|
| 3418 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
|
| 3419 | }
|
| 3420 |
|
| 3421 | static inline struct net_device *first_net_device(struct net *net)
|
| 3422 | {
|
| 3423 | return list_empty(&net->dev_base_head) ? NULL :
|
| 3424 | net_device_entry(net->dev_base_head.next);
|
| 3425 | }
|
| 3426 |
|
| 3427 | struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type,
|
| 3428 | const char *hwaddr);
|
| 3429 | struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type,
|
| 3430 | const char *hwaddr);
|
| 3431 | struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type);
|
| 3432 | void dev_add_pack(struct packet_type *pt);
|
| 3433 | void dev_remove_pack(struct packet_type *pt);
|
| 3434 | void __dev_remove_pack(struct packet_type *pt);
|
| 3435 | void dev_add_offload(struct packet_offload *po);
|
| 3436 | void dev_remove_offload(struct packet_offload *po);
|
| 3437 |
|
| 3438 | int dev_get_iflink(const struct net_device *dev);
|
| 3439 | int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb);
|
| 3440 | int dev_fill_forward_path(struct net_device_path_ctx *ctx,
|
| 3441 | struct net_device_path_stack *stack);
|
| 3442 | void dev_fill_forward_path_release(struct net_device_path_stack *stack);
|
| 3443 | struct net_device *dev_get_by_name(struct net *net, const char *name);
|
| 3444 | struct net_device *dev_get_by_name_rcu(struct net *net, const char *name);
|
| 3445 | struct net_device *__dev_get_by_name(struct net *net, const char *name);
|
| 3446 | bool netdev_name_in_use(struct net *net, const char *name);
|
| 3447 | int dev_alloc_name(struct net_device *dev, const char *name);
|
| 3448 | int netif_open(struct net_device *dev, struct netlink_ext_ack *extack);
|
| 3449 | int dev_open(struct net_device *dev, struct netlink_ext_ack *extack);
|
| 3450 | void netif_close(struct net_device *dev);
|
| 3451 | void dev_close(struct net_device *dev);
|
| 3452 | void netif_close_many(struct list_head *head, bool unlink);
|
| 3453 | void netif_disable_lro(struct net_device *dev);
|
| 3454 | void dev_disable_lro(struct net_device *dev);
|
| 3455 | int dev_loopback_xmit(struct net *net, struct sock *sk, struct sk_buff *newskb);
|
| 3456 | u16 dev_pick_tx_zero(struct net_device *dev, struct sk_buff *skb,
|
| 3457 | struct net_device *sb_dev);
|
| 3458 |
|
| 3459 | int __dev_queue_xmit(struct sk_buff *skb, struct net_device *sb_dev);
|
| 3460 | int __dev_direct_xmit(struct sk_buff *skb, u16 queue_id);
|
| 3461 |
|
| 3462 | static inline int dev_queue_xmit(struct sk_buff *skb)
|
| 3463 | {
|
| 3464 | return __dev_queue_xmit(skb, NULL);
|
| 3465 | }
|
| 3466 |
|
| 3467 | static inline int dev_queue_xmit_accel(struct sk_buff *skb,
|
| 3468 | struct net_device *sb_dev)
|
| 3469 | {
|
| 3470 | return __dev_queue_xmit(skb, sb_dev);
|
| 3471 | }
|
| 3472 |
|
| 3473 | static inline int dev_direct_xmit(struct sk_buff *skb, u16 queue_id)
|
| 3474 | {
|
| 3475 | int ret;
|
| 3476 |
|
| 3477 | ret = __dev_direct_xmit(skb, queue_id);
|
| 3478 | if (!dev_xmit_complete(ret))
|
| 3479 | kfree_skb(skb);
|
| 3480 | return ret;
|
| 3481 | }
|
| 3482 |
|
| 3483 | int register_netdevice(struct net_device *dev);
|
| 3484 | void unregister_netdevice_queue(struct net_device *dev, struct list_head *head);
|
| 3485 | void unregister_netdevice_many(struct list_head *head);
|
| 3486 | bool unregister_netdevice_queued(const struct net_device *dev);
|
| 3487 |
|
| 3488 | static inline void unregister_netdevice(struct net_device *dev)
|
| 3489 | {
|
| 3490 | unregister_netdevice_queue(dev, NULL);
|
| 3491 | }
|
| 3492 |
|
| 3493 | #ifdef CONFIG_DEBUG_NET_SMALL_RTNL
|
| 3494 | void unregister_netdevice_queue_net(struct net *net, struct net_device *dev,
|
| 3495 | struct list_head *head);
|
| 3496 | void unregister_netdevice_many_net(struct net *net);
|
| 3497 | void unregister_netdevice_queue_many_net(struct net *net, struct list_head *head);
|
| 3498 | #else
|
| 3499 | static inline void unregister_netdevice_queue_net(struct net *net,
|
| 3500 | struct net_device *dev,
|
| 3501 | struct list_head *head)
|
| 3502 | {
|
| 3503 | unregister_netdevice_queue(dev, head);
|
| 3504 | }
|
| 3505 |
|
| 3506 | static inline void unregister_netdevice_queue_many_net(struct net *net,
|
| 3507 | struct list_head *head)
|
| 3508 | {
|
| 3509 | }
|
| 3510 | #endif
|
| 3511 |
|
| 3512 | int netdev_refcnt_read(const struct net_device *dev);
|
| 3513 | void free_netdev(struct net_device *dev);
|
| 3514 |
|
| 3515 | struct net_device *netdev_get_xmit_slave(struct net_device *dev,
|
| 3516 | struct sk_buff *skb,
|
| 3517 | bool all_slaves);
|
| 3518 | struct net_device *netdev_sk_get_lowest_dev(struct net_device *dev,
|
| 3519 | struct sock *sk);
|
| 3520 | struct net_device *dev_get_by_index(struct net *net, int ifindex);
|
| 3521 | struct net_device *__dev_get_by_index(struct net *net, int ifindex);
|
| 3522 | struct net_device *netdev_get_by_index(struct net *net, int ifindex,
|
| 3523 | netdevice_tracker *tracker, gfp_t gfp);
|
| 3524 | struct net_device *netdev_get_by_index_lock(struct net *net, int ifindex);
|
| 3525 | struct net_device *netdev_get_by_name(struct net *net, const char *name,
|
| 3526 | netdevice_tracker *tracker, gfp_t gfp);
|
| 3527 | struct net_device *netdev_get_by_flags_rcu(struct net *net, netdevice_tracker *tracker,
|
| 3528 | unsigned short flags, unsigned short mask);
|
| 3529 | struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex);
|
| 3530 | void netdev_copy_name(struct net_device *dev, char *name);
|
| 3531 |
|
| 3532 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
|
| 3533 | unsigned short type,
|
| 3534 | const void *daddr, const void *saddr,
|
| 3535 | unsigned int len)
|
| 3536 | {
|
| 3537 | if (!dev->header_ops || !dev->header_ops->create)
|
| 3538 | return 0;
|
| 3539 |
|
| 3540 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len);
|
| 3541 | }
|
| 3542 |
|
| 3543 | static inline int dev_parse_header(const struct sk_buff *skb,
|
| 3544 | unsigned char *haddr)
|
| 3545 | {
|
| 3546 | const struct net_device *dev = skb->dev;
|
| 3547 |
|
| 3548 | if (!dev->header_ops || !dev->header_ops->parse)
|
| 3549 | return 0;
|
| 3550 | return dev->header_ops->parse(skb, dev, haddr);
|
| 3551 | }
|
| 3552 |
|
| 3553 | static inline __be16 dev_parse_header_protocol(const struct sk_buff *skb)
|
| 3554 | {
|
| 3555 | const struct net_device *dev = skb->dev;
|
| 3556 |
|
| 3557 | if (!dev->header_ops || !dev->header_ops->parse_protocol)
|
| 3558 | return 0;
|
| 3559 | return dev->header_ops->parse_protocol(skb);
|
| 3560 | }
|
| 3561 |
|
| 3562 |
|
| 3563 | static inline bool dev_validate_header(const struct net_device *dev,
|
| 3564 | char *ll_header, int len)
|
| 3565 | {
|
| 3566 | if (likely(len >= dev->hard_header_len))
|
| 3567 | return true;
|
| 3568 | if (len < dev->min_header_len)
|
| 3569 | return false;
|
| 3570 |
|
| 3571 | if (dev->header_ops && dev->header_ops->validate)
|
| 3572 | return dev->header_ops->validate(ll_header, len);
|
| 3573 |
|
| 3574 | return false;
|
| 3575 | }
|
| 3576 |
|
| 3577 | static inline bool dev_has_header(const struct net_device *dev)
|
| 3578 | {
|
| 3579 | return dev->header_ops && dev->header_ops->create;
|
| 3580 | }
|
| 3581 |
|
| 3582 | struct numa_drop_counters {
|
| 3583 | atomic_t drops0 ____cacheline_aligned_in_smp;
|
| 3584 | atomic_t drops1 ____cacheline_aligned_in_smp;
|
| 3585 | };
|
| 3586 |
|
| 3587 | static inline int numa_drop_read(const struct numa_drop_counters *ndc)
|
| 3588 | {
|
| 3589 | return atomic_read(&ndc->drops0) + atomic_read(&ndc->drops1);
|
| 3590 | }
|
| 3591 |
|
| 3592 | static inline void numa_drop_add(struct numa_drop_counters *ndc, int val)
|
| 3593 | {
|
| 3594 | int n = numa_node_id() % 2;
|
| 3595 |
|
| 3596 | if (n)
|
| 3597 | atomic_add(val, &ndc->drops1);
|
| 3598 | else
|
| 3599 | atomic_add(val, &ndc->drops0);
|
| 3600 | }
|
| 3601 |
|
| 3602 | static inline void numa_drop_reset(struct numa_drop_counters *ndc)
|
| 3603 | {
|
| 3604 | atomic_set(&ndc->drops0, 0);
|
| 3605 | atomic_set(&ndc->drops1, 0);
|
| 3606 | }
|
| 3607 |
|
| 3608 | |
| 3609 | * Incoming packets are placed on per-CPU queues
|
| 3610 |
|
| 3611 | struct softnet_data {
|
| 3612 | struct list_head poll_list;
|
| 3613 | struct sk_buff_head process_queue;
|
| 3614 | local_lock_t process_queue_bh_lock;
|
| 3615 |
|
| 3616 |
|
| 3617 | unsigned int processed;
|
| 3618 | unsigned int time_squeeze;
|
| 3619 | #ifdef CONFIG_RPS
|
| 3620 | struct softnet_data *rps_ipi_list;
|
| 3621 | #endif
|
| 3622 |
|
| 3623 | unsigned int received_rps;
|
| 3624 | bool in_net_rx_action;
|
| 3625 | bool in_napi_threaded_poll;
|
| 3626 |
|
| 3627 | #ifdef CONFIG_NET_FLOW_LIMIT
|
| 3628 | struct sd_flow_limit __rcu *flow_limit;
|
| 3629 | #endif
|
| 3630 | struct Qdisc *output_queue;
|
| 3631 | struct Qdisc **output_queue_tailp;
|
| 3632 | struct sk_buff *completion_queue;
|
| 3633 | #ifdef CONFIG_XFRM_OFFLOAD
|
| 3634 | struct sk_buff_head xfrm_backlog;
|
| 3635 | #endif
|
| 3636 |
|
| 3637 | struct netdev_xmit xmit;
|
| 3638 | #ifdef CONFIG_RPS
|
| 3639 | |
| 3640 | * and only read by other cpus. Worth using a cache line.
|
| 3641 |
|
| 3642 | unsigned int input_queue_head ____cacheline_aligned_in_smp;
|
| 3643 |
|
| 3644 |
|
| 3645 | call_single_data_t csd ____cacheline_aligned_in_smp;
|
| 3646 | struct softnet_data *rps_ipi_next;
|
| 3647 | unsigned int cpu;
|
| 3648 |
|
| 3649 | |
| 3650 | * input_queue_tail, input_pkt_queue and backlog.state.
|
| 3651 | * We add holes so that backlog.state is the last field
|
| 3652 | * of this cache line.
|
| 3653 |
|
| 3654 | long pad[3] ____cacheline_aligned_in_smp;
|
| 3655 | unsigned int input_queue_tail;
|
| 3656 | #endif
|
| 3657 | struct sk_buff_head input_pkt_queue;
|
| 3658 |
|
| 3659 | struct napi_struct backlog;
|
| 3660 |
|
| 3661 | struct numa_drop_counters drop_counters;
|
| 3662 |
|
| 3663 | int defer_ipi_scheduled ____cacheline_aligned_in_smp;
|
| 3664 | call_single_data_t defer_csd;
|
| 3665 | };
|
| 3666 |
|
| 3667 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data);
|
| 3668 |
|
| 3669 | struct page_pool_bh {
|
| 3670 | struct page_pool *pool;
|
| 3671 | local_lock_t bh_lock;
|
| 3672 | };
|
| 3673 | DECLARE_PER_CPU(struct page_pool_bh, system_page_pool);
|
| 3674 |
|
| 3675 | #define XMIT_RECURSION_LIMIT 8
|
| 3676 |
|
| 3677 | #ifndef CONFIG_PREEMPT_RT
|
| 3678 | static inline int dev_recursion_level(void)
|
| 3679 | {
|
| 3680 | return this_cpu_read(softnet_data.xmit.recursion);
|
| 3681 | }
|
| 3682 |
|
| 3683 | static inline bool dev_xmit_recursion(void)
|
| 3684 | {
|
| 3685 | return unlikely(__this_cpu_read(softnet_data.xmit.recursion) >
|
| 3686 | XMIT_RECURSION_LIMIT);
|
| 3687 | }
|
| 3688 |
|
| 3689 | static inline void dev_xmit_recursion_inc(void)
|
| 3690 | {
|
| 3691 | __this_cpu_inc(softnet_data.xmit.recursion);
|
| 3692 | }
|
| 3693 |
|
| 3694 | static inline void dev_xmit_recursion_dec(void)
|
| 3695 | {
|
| 3696 | __this_cpu_dec(softnet_data.xmit.recursion);
|
| 3697 | }
|
| 3698 | #else
|
| 3699 | static inline int dev_recursion_level(void)
|
| 3700 | {
|
| 3701 | return current->net_xmit.recursion;
|
| 3702 | }
|
| 3703 |
|
| 3704 | static inline bool dev_xmit_recursion(void)
|
| 3705 | {
|
| 3706 | return unlikely(current->net_xmit.recursion > XMIT_RECURSION_LIMIT);
|
| 3707 | }
|
| 3708 |
|
| 3709 | static inline void dev_xmit_recursion_inc(void)
|
| 3710 | {
|
| 3711 | current->net_xmit.recursion++;
|
| 3712 | }
|
| 3713 |
|
| 3714 | static inline void dev_xmit_recursion_dec(void)
|
| 3715 | {
|
| 3716 | current->net_xmit.recursion--;
|
| 3717 | }
|
| 3718 | #endif
|
| 3719 |
|
| 3720 | void __netif_schedule(struct Qdisc *q);
|
| 3721 | void netif_schedule_queue(struct netdev_queue *txq);
|
| 3722 |
|
| 3723 | static inline void netif_tx_schedule_all(struct net_device *dev)
|
| 3724 | {
|
| 3725 | unsigned int i;
|
| 3726 |
|
| 3727 | for (i = 0; i < dev->num_tx_queues; i++)
|
| 3728 | netif_schedule_queue(netdev_get_tx_queue(dev, i));
|
| 3729 | }
|
| 3730 |
|
| 3731 | static __always_inline void netif_tx_start_queue(struct netdev_queue *dev_queue)
|
| 3732 | {
|
| 3733 | clear_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state);
|
| 3734 | }
|
| 3735 |
|
| 3736 | |
| 3737 | * netif_start_queue - allow transmit
|
| 3738 | * @dev: network device
|
| 3739 | *
|
| 3740 | * Allow upper layers to call the device hard_start_xmit routine.
|
| 3741 |
|
| 3742 | static inline void netif_start_queue(struct net_device *dev)
|
| 3743 | {
|
| 3744 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0));
|
| 3745 | }
|
| 3746 |
|
| 3747 | static inline void netif_tx_start_all_queues(struct net_device *dev)
|
| 3748 | {
|
| 3749 | unsigned int i;
|
| 3750 |
|
| 3751 | for (i = 0; i < dev->num_tx_queues; i++) {
|
| 3752 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
|
| 3753 | netif_tx_start_queue(txq);
|
| 3754 | }
|
| 3755 | }
|
| 3756 |
|
| 3757 | void netif_tx_wake_queue(struct netdev_queue *dev_queue);
|
| 3758 |
|
| 3759 | |
| 3760 | * netif_wake_queue - restart transmit
|
| 3761 | * @dev: network device
|
| 3762 | *
|
| 3763 | * Allow upper layers to call the device hard_start_xmit routine.
|
| 3764 | * Used for flow control when transmit resources are available.
|
| 3765 |
|
| 3766 | static inline void netif_wake_queue(struct net_device *dev)
|
| 3767 | {
|
| 3768 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0));
|
| 3769 | }
|
| 3770 |
|
| 3771 | static inline void netif_tx_wake_all_queues(struct net_device *dev)
|
| 3772 | {
|
| 3773 | unsigned int i;
|
| 3774 |
|
| 3775 | for (i = 0; i < dev->num_tx_queues; i++) {
|
| 3776 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
|
| 3777 | netif_tx_wake_queue(txq);
|
| 3778 | }
|
| 3779 | }
|
| 3780 |
|
| 3781 | static __always_inline void netif_tx_stop_queue(struct netdev_queue *dev_queue)
|
| 3782 | {
|
| 3783 |
|
| 3784 | WRITE_ONCE(dev_queue->trans_start, jiffies);
|
| 3785 |
|
| 3786 |
|
| 3787 | smp_mb__before_atomic();
|
| 3788 |
|
| 3789 |
|
| 3790 | set_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state);
|
| 3791 | }
|
| 3792 |
|
| 3793 | |
| 3794 | * netif_stop_queue - stop transmitted packets
|
| 3795 | * @dev: network device
|
| 3796 | *
|
| 3797 | * Stop upper layers calling the device hard_start_xmit routine.
|
| 3798 | * Used for flow control when transmit resources are unavailable.
|
| 3799 |
|
| 3800 | static inline void netif_stop_queue(struct net_device *dev)
|
| 3801 | {
|
| 3802 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0));
|
| 3803 | }
|
| 3804 |
|
| 3805 | void netif_tx_stop_all_queues(struct net_device *dev);
|
| 3806 |
|
| 3807 | static inline bool netif_tx_queue_stopped(const struct netdev_queue *dev_queue)
|
| 3808 | {
|
| 3809 | return test_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state);
|
| 3810 | }
|
| 3811 |
|
| 3812 | |
| 3813 | * netif_queue_stopped - test if transmit queue is flowblocked
|
| 3814 | * @dev: network device
|
| 3815 | *
|
| 3816 | * Test if transmit queue on device is currently unable to send.
|
| 3817 |
|
| 3818 | static inline bool netif_queue_stopped(const struct net_device *dev)
|
| 3819 | {
|
| 3820 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0));
|
| 3821 | }
|
| 3822 |
|
| 3823 | static inline bool netif_xmit_stopped(const struct netdev_queue *dev_queue)
|
| 3824 | {
|
| 3825 | return dev_queue->state & QUEUE_STATE_ANY_XOFF;
|
| 3826 | }
|
| 3827 |
|
| 3828 | static inline bool
|
| 3829 | netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue)
|
| 3830 | {
|
| 3831 | return dev_queue->state & QUEUE_STATE_ANY_XOFF_OR_FROZEN;
|
| 3832 | }
|
| 3833 |
|
| 3834 | static inline bool
|
| 3835 | netif_xmit_frozen_or_drv_stopped(const struct netdev_queue *dev_queue)
|
| 3836 | {
|
| 3837 | return dev_queue->state & QUEUE_STATE_DRV_XOFF_OR_FROZEN;
|
| 3838 | }
|
| 3839 |
|
| 3840 | |
| 3841 | * netdev_queue_set_dql_min_limit - set dql minimum limit
|
| 3842 | * @dev_queue: pointer to transmit queue
|
| 3843 | * @min_limit: dql minimum limit
|
| 3844 | *
|
| 3845 | * Forces xmit_more() to return true until the minimum threshold
|
| 3846 | * defined by @min_limit is reached (or until the tx queue is
|
| 3847 | * empty). Warning: to be use with care, misuse will impact the
|
| 3848 | * latency.
|
| 3849 |
|
| 3850 | static inline void netdev_queue_set_dql_min_limit(struct netdev_queue *dev_queue,
|
| 3851 | unsigned int min_limit)
|
| 3852 | {
|
| 3853 | #ifdef CONFIG_BQL
|
| 3854 | dev_queue->dql.min_limit = min_limit;
|
| 3855 | #endif
|
| 3856 | }
|
| 3857 |
|
| 3858 | static inline int netdev_queue_dql_avail(const struct netdev_queue *txq)
|
| 3859 | {
|
| 3860 | #ifdef CONFIG_BQL
|
| 3861 |
|
| 3862 | return dql_avail(&txq->dql);
|
| 3863 | #else
|
| 3864 | return 0;
|
| 3865 | #endif
|
| 3866 | }
|
| 3867 |
|
| 3868 | |
| 3869 | * netdev_txq_bql_enqueue_prefetchw - prefetch bql data for write
|
| 3870 | * @dev_queue: pointer to transmit queue
|
| 3871 | *
|
| 3872 | * BQL enabled drivers might use this helper in their ndo_start_xmit(),
|
| 3873 | * to give appropriate hint to the CPU.
|
| 3874 |
|
| 3875 | static inline void netdev_txq_bql_enqueue_prefetchw(struct netdev_queue *dev_queue)
|
| 3876 | {
|
| 3877 | #ifdef CONFIG_BQL
|
| 3878 | prefetchw(&dev_queue->dql.num_queued);
|
| 3879 | #endif
|
| 3880 | }
|
| 3881 |
|
| 3882 | |
| 3883 | * netdev_txq_bql_complete_prefetchw - prefetch bql data for write
|
| 3884 | * @dev_queue: pointer to transmit queue
|
| 3885 | *
|
| 3886 | * BQL enabled drivers might use this helper in their TX completion path,
|
| 3887 | * to give appropriate hint to the CPU.
|
| 3888 |
|
| 3889 | static inline void netdev_txq_bql_complete_prefetchw(struct netdev_queue *dev_queue)
|
| 3890 | {
|
| 3891 | #ifdef CONFIG_BQL
|
| 3892 | prefetchw(&dev_queue->dql.limit);
|
| 3893 | #endif
|
| 3894 | }
|
| 3895 |
|
| 3896 | |
| 3897 | * netdev_tx_sent_queue - report the number of bytes queued to a given tx queue
|
| 3898 | * @dev_queue: network device queue
|
| 3899 | * @bytes: number of bytes queued to the device queue
|
| 3900 | *
|
| 3901 | * Report the number of bytes queued for sending/completion to the network
|
| 3902 | * device hardware queue. @bytes should be a good approximation and should
|
| 3903 | * exactly match netdev_completed_queue() @bytes.
|
| 3904 | * This is typically called once per packet, from ndo_start_xmit().
|
| 3905 |
|
| 3906 | static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue,
|
| 3907 | unsigned int bytes)
|
| 3908 | {
|
| 3909 | #ifdef CONFIG_BQL
|
| 3910 | dql_queued(&dev_queue->dql, bytes);
|
| 3911 |
|
| 3912 | if (likely(dql_avail(&dev_queue->dql) >= 0))
|
| 3913 | return;
|
| 3914 |
|
| 3915 |
|
| 3916 | WRITE_ONCE(dev_queue->trans_start, jiffies);
|
| 3917 |
|
| 3918 |
|
| 3919 | smp_mb__before_atomic();
|
| 3920 |
|
| 3921 | set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state);
|
| 3922 |
|
| 3923 | |
| 3924 | * The XOFF flag must be set before checking the dql_avail below,
|
| 3925 | * because in netdev_tx_completed_queue we update the dql_completed
|
| 3926 | * before checking the XOFF flag.
|
| 3927 |
|
| 3928 | smp_mb__after_atomic();
|
| 3929 |
|
| 3930 |
|
| 3931 | if (unlikely(dql_avail(&dev_queue->dql) >= 0))
|
| 3932 | clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state);
|
| 3933 | #endif
|
| 3934 | }
|
| 3935 |
|
| 3936 | |
| 3937 | * that they should not test BQL status themselves.
|
| 3938 | * We do want to change __QUEUE_STATE_STACK_XOFF only for the last
|
| 3939 | * skb of a batch.
|
| 3940 | * Returns true if the doorbell must be used to kick the NIC.
|
| 3941 |
|
| 3942 | static inline bool __netdev_tx_sent_queue(struct netdev_queue *dev_queue,
|
| 3943 | unsigned int bytes,
|
| 3944 | bool xmit_more)
|
| 3945 | {
|
| 3946 | if (xmit_more) {
|
| 3947 | #ifdef CONFIG_BQL
|
| 3948 | dql_queued(&dev_queue->dql, bytes);
|
| 3949 | #endif
|
| 3950 | return netif_tx_queue_stopped(dev_queue);
|
| 3951 | }
|
| 3952 | netdev_tx_sent_queue(dev_queue, bytes);
|
| 3953 | return true;
|
| 3954 | }
|
| 3955 |
|
| 3956 | |
| 3957 | * netdev_sent_queue - report the number of bytes queued to hardware
|
| 3958 | * @dev: network device
|
| 3959 | * @bytes: number of bytes queued to the hardware device queue
|
| 3960 | *
|
| 3961 | * Report the number of bytes queued for sending/completion to the network
|
| 3962 | * device hardware queue#0. @bytes should be a good approximation and should
|
| 3963 | * exactly match netdev_completed_queue() @bytes.
|
| 3964 | * This is typically called once per packet, from ndo_start_xmit().
|
| 3965 |
|
| 3966 | static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes)
|
| 3967 | {
|
| 3968 | netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes);
|
| 3969 | }
|
| 3970 |
|
| 3971 | static inline bool __netdev_sent_queue(struct net_device *dev,
|
| 3972 | unsigned int bytes,
|
| 3973 | bool xmit_more)
|
| 3974 | {
|
| 3975 | return __netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes,
|
| 3976 | xmit_more);
|
| 3977 | }
|
| 3978 |
|
| 3979 | |
| 3980 | * netdev_tx_completed_queue - report number of packets/bytes at TX completion.
|
| 3981 | * @dev_queue: network device queue
|
| 3982 | * @pkts: number of packets (currently ignored)
|
| 3983 | * @bytes: number of bytes dequeued from the device queue
|
| 3984 | *
|
| 3985 | * Must be called at most once per TX completion round (and not per
|
| 3986 | * individual packet), so that BQL can adjust its limits appropriately.
|
| 3987 |
|
| 3988 | static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue,
|
| 3989 | unsigned int pkts, unsigned int bytes)
|
| 3990 | {
|
| 3991 | #ifdef CONFIG_BQL
|
| 3992 | if (unlikely(!bytes))
|
| 3993 | return;
|
| 3994 |
|
| 3995 | dql_completed(&dev_queue->dql, bytes);
|
| 3996 |
|
| 3997 | |
| 3998 | * Without the memory barrier there is a small possibility that
|
| 3999 | * netdev_tx_sent_queue will miss the update and cause the queue to
|
| 4000 | * be stopped forever
|
| 4001 |
|
| 4002 | smp_mb();
|
| 4003 |
|
| 4004 | if (unlikely(dql_avail(&dev_queue->dql) < 0))
|
| 4005 | return;
|
| 4006 |
|
| 4007 | if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state))
|
| 4008 | netif_schedule_queue(dev_queue);
|
| 4009 | #endif
|
| 4010 | }
|
| 4011 |
|
| 4012 | |
| 4013 | * netdev_completed_queue - report bytes and packets completed by device
|
| 4014 | * @dev: network device
|
| 4015 | * @pkts: actual number of packets sent over the medium
|
| 4016 | * @bytes: actual number of bytes sent over the medium
|
| 4017 | *
|
| 4018 | * Report the number of bytes and packets transmitted by the network device
|
| 4019 | * hardware queue over the physical medium, @bytes must exactly match the
|
| 4020 | * @bytes amount passed to netdev_sent_queue()
|
| 4021 |
|
| 4022 | static inline void netdev_completed_queue(struct net_device *dev,
|
| 4023 | unsigned int pkts, unsigned int bytes)
|
| 4024 | {
|
| 4025 | netdev_tx_completed_queue(netdev_get_tx_queue(dev, 0), pkts, bytes);
|
| 4026 | }
|
| 4027 |
|
| 4028 | static inline void netdev_tx_reset_queue(struct netdev_queue *q)
|
| 4029 | {
|
| 4030 | #ifdef CONFIG_BQL
|
| 4031 | clear_bit(__QUEUE_STATE_STACK_XOFF, &q->state);
|
| 4032 | dql_reset(&q->dql);
|
| 4033 | #endif
|
| 4034 | }
|
| 4035 |
|
| 4036 | |
| 4037 | * netdev_tx_reset_subqueue - reset the BQL stats and state of a netdev queue
|
| 4038 | * @dev: network device
|
| 4039 | * @qid: stack index of the queue to reset
|
| 4040 |
|
| 4041 | static inline void netdev_tx_reset_subqueue(const struct net_device *dev,
|
| 4042 | u32 qid)
|
| 4043 | {
|
| 4044 | netdev_tx_reset_queue(netdev_get_tx_queue(dev, qid));
|
| 4045 | }
|
| 4046 |
|
| 4047 | |
| 4048 | * netdev_reset_queue - reset the packets and bytes count of a network device
|
| 4049 | * @dev_queue: network device
|
| 4050 | *
|
| 4051 | * Reset the bytes and packet count of a network device and clear the
|
| 4052 | * software flow control OFF bit for this network device
|
| 4053 |
|
| 4054 | static inline void netdev_reset_queue(struct net_device *dev_queue)
|
| 4055 | {
|
| 4056 | netdev_tx_reset_subqueue(dev_queue, 0);
|
| 4057 | }
|
| 4058 |
|
| 4059 | |
| 4060 | * netdev_cap_txqueue - check if selected tx queue exceeds device queues
|
| 4061 | * @dev: network device
|
| 4062 | * @queue_index: given tx queue index
|
| 4063 | *
|
| 4064 | * Returns 0 if given tx queue index >= number of device tx queues,
|
| 4065 | * otherwise returns the originally passed tx queue index.
|
| 4066 |
|
| 4067 | static inline u16 netdev_cap_txqueue(struct net_device *dev, u16 queue_index)
|
| 4068 | {
|
| 4069 | if (unlikely(queue_index >= dev->real_num_tx_queues)) {
|
| 4070 | net_warn_ratelimited("%s selects TX queue %d, but real number of TX queues is %d\n",
|
| 4071 | dev->name, queue_index,
|
| 4072 | dev->real_num_tx_queues);
|
| 4073 | return 0;
|
| 4074 | }
|
| 4075 |
|
| 4076 | return queue_index;
|
| 4077 | }
|
| 4078 |
|
| 4079 | |
| 4080 | * netif_running - test if up
|
| 4081 | * @dev: network device
|
| 4082 | *
|
| 4083 | * Test if the device has been brought up.
|
| 4084 |
|
| 4085 | static inline bool netif_running(const struct net_device *dev)
|
| 4086 | {
|
| 4087 | return test_bit(__LINK_STATE_START, &dev->state);
|
| 4088 | }
|
| 4089 |
|
| 4090 | |
| 4091 | * Routines to manage the subqueues on a device. We only need start,
|
| 4092 | * stop, and a check if it's stopped. All other device management is
|
| 4093 | * done at the overall netdevice level.
|
| 4094 | * Also test the device if we're multiqueue.
|
| 4095 |
|
| 4096 |
|
| 4097 | |
| 4098 | * netif_start_subqueue - allow sending packets on subqueue
|
| 4099 | * @dev: network device
|
| 4100 | * @queue_index: sub queue index
|
| 4101 | *
|
| 4102 | * Start individual transmit queue of a device with multiple transmit queues.
|
| 4103 |
|
| 4104 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
|
| 4105 | {
|
| 4106 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
|
| 4107 |
|
| 4108 | netif_tx_start_queue(txq);
|
| 4109 | }
|
| 4110 |
|
| 4111 | |
| 4112 | * netif_stop_subqueue - stop sending packets on subqueue
|
| 4113 | * @dev: network device
|
| 4114 | * @queue_index: sub queue index
|
| 4115 | *
|
| 4116 | * Stop individual transmit queue of a device with multiple transmit queues.
|
| 4117 |
|
| 4118 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
|
| 4119 | {
|
| 4120 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
|
| 4121 | netif_tx_stop_queue(txq);
|
| 4122 | }
|
| 4123 |
|
| 4124 | |
| 4125 | * __netif_subqueue_stopped - test status of subqueue
|
| 4126 | * @dev: network device
|
| 4127 | * @queue_index: sub queue index
|
| 4128 | *
|
| 4129 | * Check individual transmit queue of a device with multiple transmit queues.
|
| 4130 |
|
| 4131 | static inline bool __netif_subqueue_stopped(const struct net_device *dev,
|
| 4132 | u16 queue_index)
|
| 4133 | {
|
| 4134 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
|
| 4135 |
|
| 4136 | return netif_tx_queue_stopped(txq);
|
| 4137 | }
|
| 4138 |
|
| 4139 | |
| 4140 | * netif_subqueue_stopped - test status of subqueue
|
| 4141 | * @dev: network device
|
| 4142 | * @skb: sub queue buffer pointer
|
| 4143 | *
|
| 4144 | * Check individual transmit queue of a device with multiple transmit queues.
|
| 4145 |
|
| 4146 | static inline bool netif_subqueue_stopped(const struct net_device *dev,
|
| 4147 | struct sk_buff *skb)
|
| 4148 | {
|
| 4149 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb));
|
| 4150 | }
|
| 4151 |
|
| 4152 | |
| 4153 | * netif_wake_subqueue - allow sending packets on subqueue
|
| 4154 | * @dev: network device
|
| 4155 | * @queue_index: sub queue index
|
| 4156 | *
|
| 4157 | * Resume individual transmit queue of a device with multiple transmit queues.
|
| 4158 |
|
| 4159 | static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
|
| 4160 | {
|
| 4161 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
|
| 4162 |
|
| 4163 | netif_tx_wake_queue(txq);
|
| 4164 | }
|
| 4165 |
|
| 4166 | #ifdef CONFIG_XPS
|
| 4167 | int netif_set_xps_queue(struct net_device *dev, const struct cpumask *mask,
|
| 4168 | u16 index);
|
| 4169 | int __netif_set_xps_queue(struct net_device *dev, const unsigned long *mask,
|
| 4170 | u16 index, enum xps_map_type type);
|
| 4171 |
|
| 4172 | |
| 4173 | * netif_attr_test_mask - Test a CPU or Rx queue set in a mask
|
| 4174 | * @j: CPU/Rx queue index
|
| 4175 | * @mask: bitmask of all cpus/rx queues
|
| 4176 | * @nr_bits: number of bits in the bitmask
|
| 4177 | *
|
| 4178 | * Test if a CPU or Rx queue index is set in a mask of all CPU/Rx queues.
|
| 4179 |
|
| 4180 | static inline bool netif_attr_test_mask(unsigned long j,
|
| 4181 | const unsigned long *mask,
|
| 4182 | unsigned int nr_bits)
|
| 4183 | {
|
| 4184 | cpu_max_bits_warn(j, nr_bits);
|
| 4185 | return test_bit(j, mask);
|
| 4186 | }
|
| 4187 |
|
| 4188 | |
| 4189 | * netif_attr_test_online - Test for online CPU/Rx queue
|
| 4190 | * @j: CPU/Rx queue index
|
| 4191 | * @online_mask: bitmask for CPUs/Rx queues that are online
|
| 4192 | * @nr_bits: number of bits in the bitmask
|
| 4193 | *
|
| 4194 | * Returns: true if a CPU/Rx queue is online.
|
| 4195 |
|
| 4196 | static inline bool netif_attr_test_online(unsigned long j,
|
| 4197 | const unsigned long *online_mask,
|
| 4198 | unsigned int nr_bits)
|
| 4199 | {
|
| 4200 | cpu_max_bits_warn(j, nr_bits);
|
| 4201 |
|
| 4202 | if (online_mask)
|
| 4203 | return test_bit(j, online_mask);
|
| 4204 |
|
| 4205 | return (j < nr_bits);
|
| 4206 | }
|
| 4207 |
|
| 4208 | |
| 4209 | * netif_attrmask_next - get the next CPU/Rx queue in a cpu/Rx queues mask
|
| 4210 | * @n: CPU/Rx queue index
|
| 4211 | * @srcp: the cpumask/Rx queue mask pointer
|
| 4212 | * @nr_bits: number of bits in the bitmask
|
| 4213 | *
|
| 4214 | * Returns: next (after n) CPU/Rx queue index in the mask;
|
| 4215 | * >= nr_bits if no further CPUs/Rx queues set.
|
| 4216 |
|
| 4217 | static inline unsigned int netif_attrmask_next(int n, const unsigned long *srcp,
|
| 4218 | unsigned int nr_bits)
|
| 4219 | {
|
| 4220 |
|
| 4221 | if (n != -1)
|
| 4222 | cpu_max_bits_warn(n, nr_bits);
|
| 4223 |
|
| 4224 | if (srcp)
|
| 4225 | return find_next_bit(srcp, nr_bits, n + 1);
|
| 4226 |
|
| 4227 | return n + 1;
|
| 4228 | }
|
| 4229 |
|
| 4230 | |
| 4231 | * netif_attrmask_next_and - get the next CPU/Rx queue in \*src1p & \*src2p
|
| 4232 | * @n: CPU/Rx queue index
|
| 4233 | * @src1p: the first CPUs/Rx queues mask pointer
|
| 4234 | * @src2p: the second CPUs/Rx queues mask pointer
|
| 4235 | * @nr_bits: number of bits in the bitmask
|
| 4236 | *
|
| 4237 | * Returns: next (after n) CPU/Rx queue index set in both masks;
|
| 4238 | * >= nr_bits if no further CPUs/Rx queues set in both.
|
| 4239 |
|
| 4240 | static inline int netif_attrmask_next_and(int n, const unsigned long *src1p,
|
| 4241 | const unsigned long *src2p,
|
| 4242 | unsigned int nr_bits)
|
| 4243 | {
|
| 4244 |
|
| 4245 | if (n != -1)
|
| 4246 | cpu_max_bits_warn(n, nr_bits);
|
| 4247 |
|
| 4248 | if (src1p && src2p)
|
| 4249 | return find_next_and_bit(src1p, src2p, nr_bits, n + 1);
|
| 4250 | else if (src1p)
|
| 4251 | return find_next_bit(src1p, nr_bits, n + 1);
|
| 4252 | else if (src2p)
|
| 4253 | return find_next_bit(src2p, nr_bits, n + 1);
|
| 4254 |
|
| 4255 | return n + 1;
|
| 4256 | }
|
| 4257 | #else
|
| 4258 | static inline int netif_set_xps_queue(struct net_device *dev,
|
| 4259 | const struct cpumask *mask,
|
| 4260 | u16 index)
|
| 4261 | {
|
| 4262 | return 0;
|
| 4263 | }
|
| 4264 |
|
| 4265 | static inline int __netif_set_xps_queue(struct net_device *dev,
|
| 4266 | const unsigned long *mask,
|
| 4267 | u16 index, enum xps_map_type type)
|
| 4268 | {
|
| 4269 | return 0;
|
| 4270 | }
|
| 4271 | #endif
|
| 4272 |
|
| 4273 | |
| 4274 | * netif_is_multiqueue - test if device has multiple transmit queues
|
| 4275 | * @dev: network device
|
| 4276 | *
|
| 4277 | * Check if device has multiple transmit queues
|
| 4278 |
|
| 4279 | static inline bool netif_is_multiqueue(const struct net_device *dev)
|
| 4280 | {
|
| 4281 | return dev->num_tx_queues > 1;
|
| 4282 | }
|
| 4283 |
|
| 4284 | int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq);
|
| 4285 | int netif_set_real_num_rx_queues(struct net_device *dev, unsigned int rxq);
|
| 4286 | int netif_set_real_num_queues(struct net_device *dev,
|
| 4287 | unsigned int txq, unsigned int rxq);
|
| 4288 |
|
| 4289 | int netif_get_num_default_rss_queues(void);
|
| 4290 |
|
| 4291 | void dev_kfree_skb_irq_reason(struct sk_buff *skb, enum skb_drop_reason reason);
|
| 4292 | void dev_kfree_skb_any_reason(struct sk_buff *skb, enum skb_drop_reason reason);
|
| 4293 |
|
| 4294 | |
| 4295 | * It is not allowed to call kfree_skb() or consume_skb() from hardware
|
| 4296 | * interrupt context or with hardware interrupts being disabled.
|
| 4297 | * (in_hardirq() || irqs_disabled())
|
| 4298 | *
|
| 4299 | * We provide four helpers that can be used in following contexts :
|
| 4300 | *
|
| 4301 | * dev_kfree_skb_irq(skb) when caller drops a packet from irq context,
|
| 4302 | * replacing kfree_skb(skb)
|
| 4303 | *
|
| 4304 | * dev_consume_skb_irq(skb) when caller consumes a packet from irq context.
|
| 4305 | * Typically used in place of consume_skb(skb) in TX completion path
|
| 4306 | *
|
| 4307 | * dev_kfree_skb_any(skb) when caller doesn't know its current irq context,
|
| 4308 | * replacing kfree_skb(skb)
|
| 4309 | *
|
| 4310 | * dev_consume_skb_any(skb) when caller doesn't know its current irq context,
|
| 4311 | * and consumed a packet. Used in place of consume_skb(skb)
|
| 4312 |
|
| 4313 | static inline void dev_kfree_skb_irq(struct sk_buff *skb)
|
| 4314 | {
|
| 4315 | dev_kfree_skb_irq_reason(skb, SKB_DROP_REASON_NOT_SPECIFIED);
|
| 4316 | }
|
| 4317 |
|
| 4318 | static inline void dev_consume_skb_irq(struct sk_buff *skb)
|
| 4319 | {
|
| 4320 | dev_kfree_skb_irq_reason(skb, SKB_CONSUMED);
|
| 4321 | }
|
| 4322 |
|
| 4323 | static inline void dev_kfree_skb_any(struct sk_buff *skb)
|
| 4324 | {
|
| 4325 | dev_kfree_skb_any_reason(skb, SKB_DROP_REASON_NOT_SPECIFIED);
|
| 4326 | }
|
| 4327 |
|
| 4328 | static inline void dev_consume_skb_any(struct sk_buff *skb)
|
| 4329 | {
|
| 4330 | dev_kfree_skb_any_reason(skb, SKB_CONSUMED);
|
| 4331 | }
|
| 4332 |
|
| 4333 | u32 bpf_prog_run_generic_xdp(struct sk_buff *skb, struct xdp_buff *xdp,
|
| 4334 | const struct bpf_prog *xdp_prog);
|
| 4335 | void generic_xdp_tx(struct sk_buff *skb, const struct bpf_prog *xdp_prog);
|
| 4336 | int do_xdp_generic(const struct bpf_prog *xdp_prog, struct sk_buff **pskb);
|
| 4337 | int netif_rx(struct sk_buff *skb);
|
| 4338 | int __netif_rx(struct sk_buff *skb);
|
| 4339 |
|
| 4340 | int netif_receive_skb(struct sk_buff *skb);
|
| 4341 | int netif_receive_skb_core(struct sk_buff *skb);
|
| 4342 | void netif_receive_skb_list_internal(struct list_head *head);
|
| 4343 | void netif_receive_skb_list(struct list_head *head);
|
| 4344 | gro_result_t gro_receive_skb(struct gro_node *gro, struct sk_buff *skb);
|
| 4345 |
|
| 4346 | static inline gro_result_t napi_gro_receive(struct napi_struct *napi,
|
| 4347 | struct sk_buff *skb)
|
| 4348 | {
|
| 4349 | return gro_receive_skb(&napi->gro, skb);
|
| 4350 | }
|
| 4351 |
|
| 4352 | struct sk_buff *napi_get_frags(struct napi_struct *napi);
|
| 4353 | gro_result_t napi_gro_frags(struct napi_struct *napi);
|
| 4354 |
|
| 4355 | static inline void napi_free_frags(struct napi_struct *napi)
|
| 4356 | {
|
| 4357 | kfree_skb(napi->skb);
|
| 4358 | napi->skb = NULL;
|
| 4359 | }
|
| 4360 |
|
| 4361 | bool netdev_is_rx_handler_busy(struct net_device *dev);
|
| 4362 | int netdev_rx_handler_register(struct net_device *dev,
|
| 4363 | rx_handler_func_t *rx_handler,
|
| 4364 | void *rx_handler_data);
|
| 4365 | void netdev_rx_handler_unregister(struct net_device *dev);
|
| 4366 |
|
| 4367 | bool dev_valid_name(const char *name);
|
| 4368 | static inline bool is_socket_ioctl_cmd(unsigned int cmd)
|
| 4369 | {
|
| 4370 | return _IOC_TYPE(cmd) == SOCK_IOC_TYPE;
|
| 4371 | }
|
| 4372 | int get_user_ifreq(struct ifreq *ifr, void __user **ifrdata, void __user *arg);
|
| 4373 | int put_user_ifreq(struct ifreq *ifr, void __user *arg);
|
| 4374 | int dev_ioctl(struct net *net, unsigned int cmd, struct ifreq *ifr,
|
| 4375 | void __user *data, bool *need_copyout);
|
| 4376 | int dev_ifconf(struct net *net, struct ifconf __user *ifc);
|
| 4377 | int dev_eth_ioctl(struct net_device *dev,
|
| 4378 | struct ifreq *ifr, unsigned int cmd);
|
| 4379 | int generic_hwtstamp_get_lower(struct net_device *dev,
|
| 4380 | struct kernel_hwtstamp_config *kernel_cfg);
|
| 4381 | int generic_hwtstamp_set_lower(struct net_device *dev,
|
| 4382 | struct kernel_hwtstamp_config *kernel_cfg,
|
| 4383 | struct netlink_ext_ack *extack);
|
| 4384 | int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *userdata);
|
| 4385 | unsigned int netif_get_flags(const struct net_device *dev);
|
| 4386 | int __dev_change_flags(struct net_device *dev, unsigned int flags,
|
| 4387 | struct netlink_ext_ack *extack);
|
| 4388 | int netif_change_flags(struct net_device *dev, unsigned int flags,
|
| 4389 | struct netlink_ext_ack *extack);
|
| 4390 | int dev_change_flags(struct net_device *dev, unsigned int flags,
|
| 4391 | struct netlink_ext_ack *extack);
|
| 4392 | int netif_set_alias(struct net_device *dev, const char *alias, size_t len);
|
| 4393 | int dev_set_alias(struct net_device *, const char *, size_t);
|
| 4394 | int dev_get_alias(const struct net_device *, char *, size_t);
|
| 4395 | int __dev_change_net_namespace(struct net_device *dev, struct net *net,
|
| 4396 | const char *pat, int new_ifindex,
|
| 4397 | struct netlink_ext_ack *extack);
|
| 4398 | int dev_change_net_namespace(struct net_device *dev, struct net *net,
|
| 4399 | const char *pat);
|
| 4400 | int __netif_set_mtu(struct net_device *dev, int new_mtu);
|
| 4401 | int netif_set_mtu(struct net_device *dev, int new_mtu);
|
| 4402 | int dev_set_mtu(struct net_device *, int);
|
| 4403 | int netif_pre_changeaddr_notify(struct net_device *dev, const char *addr,
|
| 4404 | struct netlink_ext_ack *extack);
|
| 4405 | int netif_set_mac_address(struct net_device *dev, struct sockaddr_storage *ss,
|
| 4406 | struct netlink_ext_ack *extack);
|
| 4407 | int dev_set_mac_address(struct net_device *dev, struct sockaddr_storage *ss,
|
| 4408 | struct netlink_ext_ack *extack);
|
| 4409 | int dev_set_mac_address_user(struct net_device *dev, struct sockaddr_storage *ss,
|
| 4410 | struct netlink_ext_ack *extack);
|
| 4411 | int netif_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name);
|
| 4412 | int netif_get_port_parent_id(struct net_device *dev,
|
| 4413 | struct netdev_phys_item_id *ppid, bool recurse);
|
| 4414 | bool netdev_port_same_parent_id(struct net_device *a, struct net_device *b);
|
| 4415 |
|
| 4416 | struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev, bool *again);
|
| 4417 | struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
|
| 4418 | struct netdev_queue *txq, int *ret);
|
| 4419 |
|
| 4420 | int bpf_xdp_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);
|
| 4421 | u8 dev_xdp_prog_count(struct net_device *dev);
|
| 4422 | int netif_xdp_propagate(struct net_device *dev, struct netdev_bpf *bpf);
|
| 4423 | int dev_xdp_propagate(struct net_device *dev, struct netdev_bpf *bpf);
|
| 4424 | u8 dev_xdp_sb_prog_count(struct net_device *dev);
|
| 4425 | u32 dev_xdp_prog_id(struct net_device *dev, enum bpf_xdp_mode mode);
|
| 4426 |
|
| 4427 | u32 dev_get_min_mp_channel_count(const struct net_device *dev);
|
| 4428 |
|
| 4429 | int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb);
|
| 4430 | int dev_forward_skb(struct net_device *dev, struct sk_buff *skb);
|
| 4431 | int dev_forward_skb_nomtu(struct net_device *dev, struct sk_buff *skb);
|
| 4432 | bool is_skb_forwardable(const struct net_device *dev,
|
| 4433 | const struct sk_buff *skb);
|
| 4434 |
|
| 4435 | static __always_inline bool __is_skb_forwardable(const struct net_device *dev,
|
| 4436 | const struct sk_buff *skb,
|
| 4437 | const bool check_mtu)
|
| 4438 | {
|
| 4439 | const u32 vlan_hdr_len = 4;
|
| 4440 | unsigned int len;
|
| 4441 |
|
| 4442 | if (!(dev->flags & IFF_UP))
|
| 4443 | return false;
|
| 4444 |
|
| 4445 | if (!check_mtu)
|
| 4446 | return true;
|
| 4447 |
|
| 4448 | len = dev->mtu + dev->hard_header_len + vlan_hdr_len;
|
| 4449 | if (skb->len <= len)
|
| 4450 | return true;
|
| 4451 |
|
| 4452 | |
| 4453 | * could be forwarded without being segmented before
|
| 4454 |
|
| 4455 | if (skb_is_gso(skb))
|
| 4456 | return true;
|
| 4457 |
|
| 4458 | return false;
|
| 4459 | }
|
| 4460 |
|
| 4461 | void netdev_core_stats_inc(struct net_device *dev, u32 offset);
|
| 4462 |
|
| 4463 | #define DEV_CORE_STATS_INC(FIELD) \
|
| 4464 | static inline void dev_core_stats_##FIELD##_inc(struct net_device *dev) \
|
| 4465 | { \
|
| 4466 | netdev_core_stats_inc(dev, \
|
| 4467 | offsetof(struct net_device_core_stats, FIELD)); \
|
| 4468 | }
|
| 4469 | DEV_CORE_STATS_INC(rx_dropped)
|
| 4470 | DEV_CORE_STATS_INC(tx_dropped)
|
| 4471 | DEV_CORE_STATS_INC(rx_nohandler)
|
| 4472 | DEV_CORE_STATS_INC(rx_otherhost_dropped)
|
| 4473 | #undef DEV_CORE_STATS_INC
|
| 4474 |
|
| 4475 | static __always_inline int ____dev_forward_skb(struct net_device *dev,
|
| 4476 | struct sk_buff *skb,
|
| 4477 | const bool check_mtu)
|
| 4478 | {
|
| 4479 | if (skb_orphan_frags(skb, GFP_ATOMIC) ||
|
| 4480 | unlikely(!__is_skb_forwardable(dev, skb, check_mtu))) {
|
| 4481 | dev_core_stats_rx_dropped_inc(dev);
|
| 4482 | kfree_skb(skb);
|
| 4483 | return NET_RX_DROP;
|
| 4484 | }
|
| 4485 |
|
| 4486 | skb_scrub_packet(skb, !net_eq(dev_net(dev), dev_net(skb->dev)));
|
| 4487 | skb->priority = 0;
|
| 4488 | return 0;
|
| 4489 | }
|
| 4490 |
|
| 4491 | bool dev_nit_active_rcu(const struct net_device *dev);
|
| 4492 | static inline bool dev_nit_active(const struct net_device *dev)
|
| 4493 | {
|
| 4494 | bool ret;
|
| 4495 |
|
| 4496 | rcu_read_lock();
|
| 4497 | ret = dev_nit_active_rcu(dev);
|
| 4498 | rcu_read_unlock();
|
| 4499 | return ret;
|
| 4500 | }
|
| 4501 |
|
| 4502 | void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev);
|
| 4503 |
|
| 4504 | static inline void __dev_put(struct net_device *dev)
|
| 4505 | {
|
| 4506 | if (dev) {
|
| 4507 | #ifdef CONFIG_PCPU_DEV_REFCNT
|
| 4508 | this_cpu_dec(*dev->pcpu_refcnt);
|
| 4509 | #else
|
| 4510 | refcount_dec(&dev->dev_refcnt);
|
| 4511 | #endif
|
| 4512 | }
|
| 4513 | }
|
| 4514 |
|
| 4515 | static inline void __dev_hold(struct net_device *dev)
|
| 4516 | {
|
| 4517 | if (dev) {
|
| 4518 | #ifdef CONFIG_PCPU_DEV_REFCNT
|
| 4519 | this_cpu_inc(*dev->pcpu_refcnt);
|
| 4520 | #else
|
| 4521 | refcount_inc(&dev->dev_refcnt);
|
| 4522 | #endif
|
| 4523 | }
|
| 4524 | }
|
| 4525 |
|
| 4526 | static inline void __netdev_tracker_alloc(struct net_device *dev,
|
| 4527 | netdevice_tracker *tracker,
|
| 4528 | gfp_t gfp)
|
| 4529 | {
|
| 4530 | #ifdef CONFIG_NET_DEV_REFCNT_TRACKER
|
| 4531 | ref_tracker_alloc(&dev->refcnt_tracker, tracker, gfp);
|
| 4532 | #endif
|
| 4533 | }
|
| 4534 |
|
| 4535 | |
| 4536 | * taken by dev_get_by_name()/dev_get_by_index() to a tracked one.
|
| 4537 |
|
| 4538 | static inline void netdev_tracker_alloc(struct net_device *dev,
|
| 4539 | netdevice_tracker *tracker, gfp_t gfp)
|
| 4540 | {
|
| 4541 | #ifdef CONFIG_NET_DEV_REFCNT_TRACKER
|
| 4542 | refcount_dec(&dev->refcnt_tracker.no_tracker);
|
| 4543 | __netdev_tracker_alloc(dev, tracker, gfp);
|
| 4544 | #endif
|
| 4545 | }
|
| 4546 |
|
| 4547 | static inline void netdev_tracker_free(struct net_device *dev,
|
| 4548 | netdevice_tracker *tracker)
|
| 4549 | {
|
| 4550 | #ifdef CONFIG_NET_DEV_REFCNT_TRACKER
|
| 4551 | ref_tracker_free(&dev->refcnt_tracker, tracker);
|
| 4552 | #endif
|
| 4553 | }
|
| 4554 |
|
| 4555 | static inline void netdev_hold(struct net_device *dev,
|
| 4556 | netdevice_tracker *tracker, gfp_t gfp)
|
| 4557 | {
|
| 4558 | if (dev) {
|
| 4559 | __dev_hold(dev);
|
| 4560 | __netdev_tracker_alloc(dev, tracker, gfp);
|
| 4561 | }
|
| 4562 | }
|
| 4563 |
|
| 4564 | static inline void netdev_put(struct net_device *dev,
|
| 4565 | netdevice_tracker *tracker)
|
| 4566 | {
|
| 4567 | if (dev) {
|
| 4568 | netdev_tracker_free(dev, tracker);
|
| 4569 | __dev_put(dev);
|
| 4570 | }
|
| 4571 | }
|
| 4572 |
|
| 4573 | |
| 4574 | * dev_hold - get reference to device
|
| 4575 | * @dev: network device
|
| 4576 | *
|
| 4577 | * Hold reference to device to keep it from being freed.
|
| 4578 | * Try using netdev_hold() instead.
|
| 4579 |
|
| 4580 | static inline void dev_hold(struct net_device *dev)
|
| 4581 | {
|
| 4582 | netdev_hold(dev, NULL, GFP_ATOMIC);
|
| 4583 | }
|
| 4584 |
|
| 4585 | |
| 4586 | * dev_put - release reference to device
|
| 4587 | * @dev: network device
|
| 4588 | *
|
| 4589 | * Release reference to device to allow it to be freed.
|
| 4590 | * Try using netdev_put() instead.
|
| 4591 |
|
| 4592 | static inline void dev_put(struct net_device *dev)
|
| 4593 | {
|
| 4594 | netdev_put(dev, NULL);
|
| 4595 | }
|
| 4596 |
|
| 4597 | DEFINE_FREE(dev_put, struct net_device *, if (_T) dev_put(_T))
|
| 4598 |
|
| 4599 | static inline void netdev_ref_replace(struct net_device *odev,
|
| 4600 | struct net_device *ndev,
|
| 4601 | netdevice_tracker *tracker,
|
| 4602 | gfp_t gfp)
|
| 4603 | {
|
| 4604 | if (odev)
|
| 4605 | netdev_tracker_free(odev, tracker);
|
| 4606 |
|
| 4607 | __dev_hold(ndev);
|
| 4608 | __dev_put(odev);
|
| 4609 |
|
| 4610 | if (ndev)
|
| 4611 | __netdev_tracker_alloc(ndev, tracker, gfp);
|
| 4612 | }
|
| 4613 |
|
| 4614 | |
| 4615 | * and _off may be called from IRQ context, but it is caller
|
| 4616 | * who is responsible for serialization of these calls.
|
| 4617 | *
|
| 4618 | * The name carrier is inappropriate, these functions should really be
|
| 4619 | * called netif_lowerlayer_*() because they represent the state of any
|
| 4620 | * kind of lower layer not just hardware media.
|
| 4621 |
|
| 4622 | void linkwatch_fire_event(struct net_device *dev);
|
| 4623 |
|
| 4624 | |
| 4625 | * linkwatch_sync_dev - sync linkwatch for the given device
|
| 4626 | * @dev: network device to sync linkwatch for
|
| 4627 | *
|
| 4628 | * Sync linkwatch for the given device, removing it from the
|
| 4629 | * pending work list (if queued).
|
| 4630 |
|
| 4631 | void linkwatch_sync_dev(struct net_device *dev);
|
| 4632 | void __linkwatch_sync_dev(struct net_device *dev);
|
| 4633 |
|
| 4634 | |
| 4635 | * netif_carrier_ok - test if carrier present
|
| 4636 | * @dev: network device
|
| 4637 | *
|
| 4638 | * Check if carrier is present on device
|
| 4639 |
|
| 4640 | static inline bool netif_carrier_ok(const struct net_device *dev)
|
| 4641 | {
|
| 4642 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
|
| 4643 | }
|
| 4644 |
|
| 4645 | unsigned long dev_trans_start(struct net_device *dev);
|
| 4646 |
|
| 4647 | void netdev_watchdog_up(struct net_device *dev);
|
| 4648 |
|
| 4649 | void netif_carrier_on(struct net_device *dev);
|
| 4650 | void netif_carrier_off(struct net_device *dev);
|
| 4651 | void netif_carrier_event(struct net_device *dev);
|
| 4652 |
|
| 4653 | |
| 4654 | * netif_dormant_on - mark device as dormant.
|
| 4655 | * @dev: network device
|
| 4656 | *
|
| 4657 | * Mark device as dormant (as per RFC2863).
|
| 4658 | *
|
| 4659 | * The dormant state indicates that the relevant interface is not
|
| 4660 | * actually in a condition to pass packets (i.e., it is not 'up') but is
|
| 4661 | * in a "pending" state, waiting for some external event. For "on-
|
| 4662 | * demand" interfaces, this new state identifies the situation where the
|
| 4663 | * interface is waiting for events to place it in the up state.
|
| 4664 |
|
| 4665 | static inline void netif_dormant_on(struct net_device *dev)
|
| 4666 | {
|
| 4667 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state))
|
| 4668 | linkwatch_fire_event(dev);
|
| 4669 | }
|
| 4670 |
|
| 4671 | |
| 4672 | * netif_dormant_off - set device as not dormant.
|
| 4673 | * @dev: network device
|
| 4674 | *
|
| 4675 | * Device is not in dormant state.
|
| 4676 |
|
| 4677 | static inline void netif_dormant_off(struct net_device *dev)
|
| 4678 | {
|
| 4679 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state))
|
| 4680 | linkwatch_fire_event(dev);
|
| 4681 | }
|
| 4682 |
|
| 4683 | |
| 4684 | * netif_dormant - test if device is dormant
|
| 4685 | * @dev: network device
|
| 4686 | *
|
| 4687 | * Check if device is dormant.
|
| 4688 |
|
| 4689 | static inline bool netif_dormant(const struct net_device *dev)
|
| 4690 | {
|
| 4691 | return test_bit(__LINK_STATE_DORMANT, &dev->state);
|
| 4692 | }
|
| 4693 |
|
| 4694 |
|
| 4695 | |
| 4696 | * netif_testing_on - mark device as under test.
|
| 4697 | * @dev: network device
|
| 4698 | *
|
| 4699 | * Mark device as under test (as per RFC2863).
|
| 4700 | *
|
| 4701 | * The testing state indicates that some test(s) must be performed on
|
| 4702 | * the interface. After completion, of the test, the interface state
|
| 4703 | * will change to up, dormant, or down, as appropriate.
|
| 4704 |
|
| 4705 | static inline void netif_testing_on(struct net_device *dev)
|
| 4706 | {
|
| 4707 | if (!test_and_set_bit(__LINK_STATE_TESTING, &dev->state))
|
| 4708 | linkwatch_fire_event(dev);
|
| 4709 | }
|
| 4710 |
|
| 4711 | |
| 4712 | * netif_testing_off - set device as not under test.
|
| 4713 | * @dev: network device
|
| 4714 | *
|
| 4715 | * Device is not in testing state.
|
| 4716 |
|
| 4717 | static inline void netif_testing_off(struct net_device *dev)
|
| 4718 | {
|
| 4719 | if (test_and_clear_bit(__LINK_STATE_TESTING, &dev->state))
|
| 4720 | linkwatch_fire_event(dev);
|
| 4721 | }
|
| 4722 |
|
| 4723 | |
| 4724 | * netif_testing - test if device is under test
|
| 4725 | * @dev: network device
|
| 4726 | *
|
| 4727 | * Check if device is under test
|
| 4728 |
|
| 4729 | static inline bool netif_testing(const struct net_device *dev)
|
| 4730 | {
|
| 4731 | return test_bit(__LINK_STATE_TESTING, &dev->state);
|
| 4732 | }
|
| 4733 |
|
| 4734 |
|
| 4735 | |
| 4736 | * netif_oper_up - test if device is operational
|
| 4737 | * @dev: network device
|
| 4738 | *
|
| 4739 | * Check if carrier is operational
|
| 4740 |
|
| 4741 | static inline bool netif_oper_up(const struct net_device *dev)
|
| 4742 | {
|
| 4743 | unsigned int operstate = READ_ONCE(dev->operstate);
|
| 4744 |
|
| 4745 | return operstate == IF_OPER_UP ||
|
| 4746 | operstate == IF_OPER_UNKNOWN ;
|
| 4747 | }
|
| 4748 |
|
| 4749 | |
| 4750 | * netif_device_present - is device available or removed
|
| 4751 | * @dev: network device
|
| 4752 | *
|
| 4753 | * Check if device has not been removed from system.
|
| 4754 |
|
| 4755 | static inline bool netif_device_present(const struct net_device *dev)
|
| 4756 | {
|
| 4757 | return test_bit(__LINK_STATE_PRESENT, &dev->state);
|
| 4758 | }
|
| 4759 |
|
| 4760 | void netif_device_detach(struct net_device *dev);
|
| 4761 |
|
| 4762 | void netif_device_attach(struct net_device *dev);
|
| 4763 |
|
| 4764 | |
| 4765 | * Network interface message level settings
|
| 4766 |
|
| 4767 |
|
| 4768 | enum {
|
| 4769 | NETIF_MSG_DRV_BIT,
|
| 4770 | NETIF_MSG_PROBE_BIT,
|
| 4771 | NETIF_MSG_LINK_BIT,
|
| 4772 | NETIF_MSG_TIMER_BIT,
|
| 4773 | NETIF_MSG_IFDOWN_BIT,
|
| 4774 | NETIF_MSG_IFUP_BIT,
|
| 4775 | NETIF_MSG_RX_ERR_BIT,
|
| 4776 | NETIF_MSG_TX_ERR_BIT,
|
| 4777 | NETIF_MSG_TX_QUEUED_BIT,
|
| 4778 | NETIF_MSG_INTR_BIT,
|
| 4779 | NETIF_MSG_TX_DONE_BIT,
|
| 4780 | NETIF_MSG_RX_STATUS_BIT,
|
| 4781 | NETIF_MSG_PKTDATA_BIT,
|
| 4782 | NETIF_MSG_HW_BIT,
|
| 4783 | NETIF_MSG_WOL_BIT,
|
| 4784 |
|
| 4785 | |
| 4786 | * in net/ethtool/common.c
|
| 4787 |
|
| 4788 | NETIF_MSG_CLASS_COUNT,
|
| 4789 | };
|
| 4790 |
|
| 4791 | static_assert(NETIF_MSG_CLASS_COUNT <= 32);
|
| 4792 |
|
| 4793 | #define __NETIF_MSG_BIT(bit) ((u32)1 << (bit))
|
| 4794 | #define __NETIF_MSG(name) __NETIF_MSG_BIT(NETIF_MSG_ ## name ## _BIT)
|
| 4795 |
|
| 4796 | #define NETIF_MSG_DRV __NETIF_MSG(DRV)
|
| 4797 | #define NETIF_MSG_PROBE __NETIF_MSG(PROBE)
|
| 4798 | #define NETIF_MSG_LINK __NETIF_MSG(LINK)
|
| 4799 | #define NETIF_MSG_TIMER __NETIF_MSG(TIMER)
|
| 4800 | #define NETIF_MSG_IFDOWN __NETIF_MSG(IFDOWN)
|
| 4801 | #define NETIF_MSG_IFUP __NETIF_MSG(IFUP)
|
| 4802 | #define NETIF_MSG_RX_ERR __NETIF_MSG(RX_ERR)
|
| 4803 | #define NETIF_MSG_TX_ERR __NETIF_MSG(TX_ERR)
|
| 4804 | #define NETIF_MSG_TX_QUEUED __NETIF_MSG(TX_QUEUED)
|
| 4805 | #define NETIF_MSG_INTR __NETIF_MSG(INTR)
|
| 4806 | #define NETIF_MSG_TX_DONE __NETIF_MSG(TX_DONE)
|
| 4807 | #define NETIF_MSG_RX_STATUS __NETIF_MSG(RX_STATUS)
|
| 4808 | #define NETIF_MSG_PKTDATA __NETIF_MSG(PKTDATA)
|
| 4809 | #define NETIF_MSG_HW __NETIF_MSG(HW)
|
| 4810 | #define NETIF_MSG_WOL __NETIF_MSG(WOL)
|
| 4811 |
|
| 4812 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
|
| 4813 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
|
| 4814 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
|
| 4815 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
|
| 4816 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
|
| 4817 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
|
| 4818 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
|
| 4819 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
|
| 4820 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
|
| 4821 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
|
| 4822 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
|
| 4823 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
|
| 4824 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
|
| 4825 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
|
| 4826 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
|
| 4827 |
|
| 4828 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
|
| 4829 | {
|
| 4830 |
|
| 4831 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8))
|
| 4832 | return default_msg_enable_bits;
|
| 4833 | if (debug_value == 0)
|
| 4834 | return 0;
|
| 4835 |
|
| 4836 | return (1U << debug_value) - 1;
|
| 4837 | }
|
| 4838 |
|
| 4839 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu)
|
| 4840 | {
|
| 4841 | spin_lock(&txq->_xmit_lock);
|
| 4842 |
|
| 4843 | WRITE_ONCE(txq->xmit_lock_owner, cpu);
|
| 4844 | }
|
| 4845 |
|
| 4846 | static inline bool __netif_tx_acquire(struct netdev_queue *txq)
|
| 4847 | {
|
| 4848 | __acquire(&txq->_xmit_lock);
|
| 4849 | return true;
|
| 4850 | }
|
| 4851 |
|
| 4852 | static inline void __netif_tx_release(struct netdev_queue *txq)
|
| 4853 | {
|
| 4854 | __release(&txq->_xmit_lock);
|
| 4855 | }
|
| 4856 |
|
| 4857 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq)
|
| 4858 | {
|
| 4859 | spin_lock_bh(&txq->_xmit_lock);
|
| 4860 |
|
| 4861 | WRITE_ONCE(txq->xmit_lock_owner, smp_processor_id());
|
| 4862 | }
|
| 4863 |
|
| 4864 | static inline bool __netif_tx_trylock(struct netdev_queue *txq)
|
| 4865 | {
|
| 4866 | bool ok = spin_trylock(&txq->_xmit_lock);
|
| 4867 |
|
| 4868 | if (likely(ok)) {
|
| 4869 |
|
| 4870 | WRITE_ONCE(txq->xmit_lock_owner, smp_processor_id());
|
| 4871 | }
|
| 4872 | return ok;
|
| 4873 | }
|
| 4874 |
|
| 4875 | static inline void __netif_tx_unlock(struct netdev_queue *txq)
|
| 4876 | {
|
| 4877 |
|
| 4878 | WRITE_ONCE(txq->xmit_lock_owner, -1);
|
| 4879 | spin_unlock(&txq->_xmit_lock);
|
| 4880 | }
|
| 4881 |
|
| 4882 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq)
|
| 4883 | {
|
| 4884 |
|
| 4885 | WRITE_ONCE(txq->xmit_lock_owner, -1);
|
| 4886 | spin_unlock_bh(&txq->_xmit_lock);
|
| 4887 | }
|
| 4888 |
|
| 4889 | |
| 4890 | * txq->trans_start can be read locklessly from dev_watchdog()
|
| 4891 |
|
| 4892 | static inline void txq_trans_update(const struct net_device *dev,
|
| 4893 | struct netdev_queue *txq)
|
| 4894 | {
|
| 4895 | if (!dev->lltx)
|
| 4896 | WRITE_ONCE(txq->trans_start, jiffies);
|
| 4897 | }
|
| 4898 |
|
| 4899 | static inline void txq_trans_cond_update(struct netdev_queue *txq)
|
| 4900 | {
|
| 4901 | unsigned long now = jiffies;
|
| 4902 |
|
| 4903 | if (READ_ONCE(txq->trans_start) != now)
|
| 4904 | WRITE_ONCE(txq->trans_start, now);
|
| 4905 | }
|
| 4906 |
|
| 4907 |
|
| 4908 | static inline void netif_trans_update(struct net_device *dev)
|
| 4909 | {
|
| 4910 | struct netdev_queue *txq = netdev_get_tx_queue(dev, 0);
|
| 4911 |
|
| 4912 | txq_trans_cond_update(txq);
|
| 4913 | }
|
| 4914 |
|
| 4915 | |
| 4916 | * netif_tx_lock - grab network device transmit lock
|
| 4917 | * @dev: network device
|
| 4918 | *
|
| 4919 | * Get network device transmit lock
|
| 4920 |
|
| 4921 | void netif_tx_lock(struct net_device *dev);
|
| 4922 |
|
| 4923 | static inline void netif_tx_lock_bh(struct net_device *dev)
|
| 4924 | {
|
| 4925 | local_bh_disable();
|
| 4926 | netif_tx_lock(dev);
|
| 4927 | }
|
| 4928 |
|
| 4929 | void netif_tx_unlock(struct net_device *dev);
|
| 4930 |
|
| 4931 | static inline void netif_tx_unlock_bh(struct net_device *dev)
|
| 4932 | {
|
| 4933 | netif_tx_unlock(dev);
|
| 4934 | local_bh_enable();
|
| 4935 | }
|
| 4936 |
|
| 4937 | #define HARD_TX_LOCK(dev, txq, cpu) { \
|
| 4938 | if (!(dev)->lltx) { \
|
| 4939 | __netif_tx_lock(txq, cpu); \
|
| 4940 | } else { \
|
| 4941 | __netif_tx_acquire(txq); \
|
| 4942 | } \
|
| 4943 | }
|
| 4944 |
|
| 4945 | #define HARD_TX_TRYLOCK(dev, txq) \
|
| 4946 | (!(dev)->lltx ? \
|
| 4947 | __netif_tx_trylock(txq) : \
|
| 4948 | __netif_tx_acquire(txq))
|
| 4949 |
|
| 4950 | #define HARD_TX_UNLOCK(dev, txq) { \
|
| 4951 | if (!(dev)->lltx) { \
|
| 4952 | __netif_tx_unlock(txq); \
|
| 4953 | } else { \
|
| 4954 | __netif_tx_release(txq); \
|
| 4955 | } \
|
| 4956 | }
|
| 4957 |
|
| 4958 | static inline void netif_tx_disable(struct net_device *dev)
|
| 4959 | {
|
| 4960 | unsigned int i;
|
| 4961 | int cpu;
|
| 4962 |
|
| 4963 | local_bh_disable();
|
| 4964 | cpu = smp_processor_id();
|
| 4965 | spin_lock(&dev->tx_global_lock);
|
| 4966 | for (i = 0; i < dev->num_tx_queues; i++) {
|
| 4967 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
|
| 4968 |
|
| 4969 | __netif_tx_lock(txq, cpu);
|
| 4970 | netif_tx_stop_queue(txq);
|
| 4971 | __netif_tx_unlock(txq);
|
| 4972 | }
|
| 4973 | spin_unlock(&dev->tx_global_lock);
|
| 4974 | local_bh_enable();
|
| 4975 | }
|
| 4976 |
|
| 4977 | #ifndef CONFIG_PREEMPT_RT
|
| 4978 | static inline bool netif_tx_owned(struct netdev_queue *txq, unsigned int cpu)
|
| 4979 | {
|
| 4980 | |
| 4981 | * to -1 or to their cpu id, but not to our id.
|
| 4982 |
|
| 4983 | return READ_ONCE(txq->xmit_lock_owner) == cpu;
|
| 4984 | }
|
| 4985 |
|
| 4986 | #else
|
| 4987 | static inline bool netif_tx_owned(struct netdev_queue *txq, unsigned int cpu)
|
| 4988 | {
|
| 4989 | return rt_mutex_owner(&txq->_xmit_lock.lock) == current;
|
| 4990 | }
|
| 4991 |
|
| 4992 | #endif
|
| 4993 |
|
| 4994 | static inline void netif_addr_lock(struct net_device *dev)
|
| 4995 | {
|
| 4996 | unsigned char nest_level = 0;
|
| 4997 |
|
| 4998 | #ifdef CONFIG_LOCKDEP
|
| 4999 | nest_level = dev->nested_level;
|
| 5000 | #endif
|
| 5001 | spin_lock_nested(&dev->addr_list_lock, nest_level);
|
| 5002 | }
|
| 5003 |
|
| 5004 | static inline void netif_addr_lock_bh(struct net_device *dev)
|
| 5005 | {
|
| 5006 | unsigned char nest_level = 0;
|
| 5007 |
|
| 5008 | #ifdef CONFIG_LOCKDEP
|
| 5009 | nest_level = dev->nested_level;
|
| 5010 | #endif
|
| 5011 | local_bh_disable();
|
| 5012 | spin_lock_nested(&dev->addr_list_lock, nest_level);
|
| 5013 | }
|
| 5014 |
|
| 5015 | static inline void netif_addr_unlock(struct net_device *dev)
|
| 5016 | {
|
| 5017 | spin_unlock(&dev->addr_list_lock);
|
| 5018 | }
|
| 5019 |
|
| 5020 | static inline void netif_addr_unlock_bh(struct net_device *dev)
|
| 5021 | {
|
| 5022 | spin_unlock_bh(&dev->addr_list_lock);
|
| 5023 | }
|
| 5024 |
|
| 5025 | |
| 5026 | * dev_addrs walker. Should be used only for read access. Call with
|
| 5027 | * rcu_read_lock held.
|
| 5028 |
|
| 5029 | #define for_each_dev_addr(dev, ha) \
|
| 5030 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list)
|
| 5031 |
|
| 5032 |
|
| 5033 |
|
| 5034 | void ether_setup(struct net_device *dev);
|
| 5035 |
|
| 5036 |
|
| 5037 | struct net_device *alloc_netdev_dummy(int sizeof_priv);
|
| 5038 |
|
| 5039 |
|
| 5040 | struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name,
|
| 5041 | unsigned char name_assign_type,
|
| 5042 | void (*setup)(struct net_device *),
|
| 5043 | unsigned int txqs, unsigned int rxqs);
|
| 5044 | #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \
|
| 5045 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, 1, 1)
|
| 5046 |
|
| 5047 | #define alloc_netdev_mq(sizeof_priv, name, name_assign_type, setup, count) \
|
| 5048 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, count, \
|
| 5049 | count)
|
| 5050 |
|
| 5051 | int register_netdev(struct net_device *dev);
|
| 5052 | void unregister_netdev(struct net_device *dev);
|
| 5053 |
|
| 5054 | int devm_register_netdev(struct device *dev, struct net_device *ndev);
|
| 5055 |
|
| 5056 |
|
| 5057 | int __hw_addr_sync(struct netdev_hw_addr_list *to_list,
|
| 5058 | struct netdev_hw_addr_list *from_list, int addr_len);
|
| 5059 | int __hw_addr_sync_multiple(struct netdev_hw_addr_list *to_list,
|
| 5060 | struct netdev_hw_addr_list *from_list,
|
| 5061 | int addr_len);
|
| 5062 | void __hw_addr_unsync(struct netdev_hw_addr_list *to_list,
|
| 5063 | struct netdev_hw_addr_list *from_list, int addr_len);
|
| 5064 | int __hw_addr_sync_dev(struct netdev_hw_addr_list *list,
|
| 5065 | struct net_device *dev,
|
| 5066 | int (*sync)(struct net_device *, const unsigned char *),
|
| 5067 | int (*unsync)(struct net_device *,
|
| 5068 | const unsigned char *));
|
| 5069 | int __hw_addr_ref_sync_dev(struct netdev_hw_addr_list *list,
|
| 5070 | struct net_device *dev,
|
| 5071 | int (*sync)(struct net_device *,
|
| 5072 | const unsigned char *, int),
|
| 5073 | int (*unsync)(struct net_device *,
|
| 5074 | const unsigned char *, int));
|
| 5075 | void __hw_addr_ref_unsync_dev(struct netdev_hw_addr_list *list,
|
| 5076 | struct net_device *dev,
|
| 5077 | int (*unsync)(struct net_device *,
|
| 5078 | const unsigned char *, int));
|
| 5079 | void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list,
|
| 5080 | struct net_device *dev,
|
| 5081 | int (*unsync)(struct net_device *,
|
| 5082 | const unsigned char *));
|
| 5083 | void __hw_addr_init(struct netdev_hw_addr_list *list);
|
| 5084 | void __hw_addr_flush(struct netdev_hw_addr_list *list);
|
| 5085 | int __hw_addr_list_snapshot(struct netdev_hw_addr_list *snap,
|
| 5086 | const struct netdev_hw_addr_list *list,
|
| 5087 | int addr_len, struct netdev_hw_addr_list *cache);
|
| 5088 | void __hw_addr_list_reconcile(struct netdev_hw_addr_list *real_list,
|
| 5089 | struct netdev_hw_addr_list *work,
|
| 5090 | struct netdev_hw_addr_list *ref, int addr_len,
|
| 5091 | struct netdev_hw_addr_list *cache);
|
| 5092 |
|
| 5093 |
|
| 5094 | void dev_addr_mod(struct net_device *dev, unsigned int offset,
|
| 5095 | const void *addr, size_t len);
|
| 5096 |
|
| 5097 | static inline void
|
| 5098 | __dev_addr_set(struct net_device *dev, const void *addr, size_t len)
|
| 5099 | {
|
| 5100 | dev_addr_mod(dev, 0, addr, len);
|
| 5101 | }
|
| 5102 |
|
| 5103 | static inline void dev_addr_set(struct net_device *dev, const u8 *addr)
|
| 5104 | {
|
| 5105 | __dev_addr_set(dev, addr, dev->addr_len);
|
| 5106 | }
|
| 5107 |
|
| 5108 | int dev_addr_add(struct net_device *dev, const unsigned char *addr,
|
| 5109 | unsigned char addr_type);
|
| 5110 | int dev_addr_del(struct net_device *dev, const unsigned char *addr,
|
| 5111 | unsigned char addr_type);
|
| 5112 |
|
| 5113 |
|
| 5114 | int dev_uc_add(struct net_device *dev, const unsigned char *addr);
|
| 5115 | int dev_uc_add_excl(struct net_device *dev, const unsigned char *addr);
|
| 5116 | int dev_uc_del(struct net_device *dev, const unsigned char *addr);
|
| 5117 | int dev_uc_sync(struct net_device *to, struct net_device *from);
|
| 5118 | int dev_uc_sync_multiple(struct net_device *to, struct net_device *from);
|
| 5119 | void dev_uc_unsync(struct net_device *to, struct net_device *from);
|
| 5120 | void dev_uc_flush(struct net_device *dev);
|
| 5121 | void dev_uc_init(struct net_device *dev);
|
| 5122 |
|
| 5123 | |
| 5124 | * __dev_uc_sync - Synchronize device's unicast list
|
| 5125 | * @dev: device to sync
|
| 5126 | * @sync: function to call if address should be added
|
| 5127 | * @unsync: function to call if address should be removed
|
| 5128 | *
|
| 5129 | * Add newly added addresses to the interface, and release
|
| 5130 | * addresses that have been deleted.
|
| 5131 |
|
| 5132 | static inline int __dev_uc_sync(struct net_device *dev,
|
| 5133 | int (*sync)(struct net_device *,
|
| 5134 | const unsigned char *),
|
| 5135 | int (*unsync)(struct net_device *,
|
| 5136 | const unsigned char *))
|
| 5137 | {
|
| 5138 | return __hw_addr_sync_dev(&dev->uc, dev, sync, unsync);
|
| 5139 | }
|
| 5140 |
|
| 5141 | |
| 5142 | * __dev_uc_unsync - Remove synchronized addresses from device
|
| 5143 | * @dev: device to sync
|
| 5144 | * @unsync: function to call if address should be removed
|
| 5145 | *
|
| 5146 | * Remove all addresses that were added to the device by dev_uc_sync().
|
| 5147 |
|
| 5148 | static inline void __dev_uc_unsync(struct net_device *dev,
|
| 5149 | int (*unsync)(struct net_device *,
|
| 5150 | const unsigned char *))
|
| 5151 | {
|
| 5152 | __hw_addr_unsync_dev(&dev->uc, dev, unsync);
|
| 5153 | }
|
| 5154 |
|
| 5155 |
|
| 5156 | int dev_mc_add(struct net_device *dev, const unsigned char *addr);
|
| 5157 | int dev_mc_add_global(struct net_device *dev, const unsigned char *addr);
|
| 5158 | int dev_mc_add_excl(struct net_device *dev, const unsigned char *addr);
|
| 5159 | int dev_mc_del(struct net_device *dev, const unsigned char *addr);
|
| 5160 | int dev_mc_del_global(struct net_device *dev, const unsigned char *addr);
|
| 5161 | int dev_mc_sync(struct net_device *to, struct net_device *from);
|
| 5162 | int dev_mc_sync_multiple(struct net_device *to, struct net_device *from);
|
| 5163 | void dev_mc_unsync(struct net_device *to, struct net_device *from);
|
| 5164 | void dev_mc_flush(struct net_device *dev);
|
| 5165 | void dev_mc_init(struct net_device *dev);
|
| 5166 |
|
| 5167 | |
| 5168 | * __dev_mc_sync - Synchronize device's multicast list
|
| 5169 | * @dev: device to sync
|
| 5170 | * @sync: function to call if address should be added
|
| 5171 | * @unsync: function to call if address should be removed
|
| 5172 | *
|
| 5173 | * Add newly added addresses to the interface, and release
|
| 5174 | * addresses that have been deleted.
|
| 5175 |
|
| 5176 | static inline int __dev_mc_sync(struct net_device *dev,
|
| 5177 | int (*sync)(struct net_device *,
|
| 5178 | const unsigned char *),
|
| 5179 | int (*unsync)(struct net_device *,
|
| 5180 | const unsigned char *))
|
| 5181 | {
|
| 5182 | return __hw_addr_sync_dev(&dev->mc, dev, sync, unsync);
|
| 5183 | }
|
| 5184 |
|
| 5185 | |
| 5186 | * __dev_mc_unsync - Remove synchronized addresses from device
|
| 5187 | * @dev: device to sync
|
| 5188 | * @unsync: function to call if address should be removed
|
| 5189 | *
|
| 5190 | * Remove all addresses that were added to the device by dev_mc_sync().
|
| 5191 |
|
| 5192 | static inline void __dev_mc_unsync(struct net_device *dev,
|
| 5193 | int (*unsync)(struct net_device *,
|
| 5194 | const unsigned char *))
|
| 5195 | {
|
| 5196 | __hw_addr_unsync_dev(&dev->mc, dev, unsync);
|
| 5197 | }
|
| 5198 |
|
| 5199 |
|
| 5200 | void dev_set_rx_mode(struct net_device *dev);
|
| 5201 | void netif_rx_mode_schedule_retry(struct net_device *dev);
|
| 5202 | int netif_set_promiscuity(struct net_device *dev, int inc);
|
| 5203 | int dev_set_promiscuity(struct net_device *dev, int inc);
|
| 5204 | int netif_set_allmulti(struct net_device *dev, int inc, bool notify);
|
| 5205 | int dev_set_allmulti(struct net_device *dev, int inc);
|
| 5206 | void netif_state_change(struct net_device *dev);
|
| 5207 | void netdev_state_change(struct net_device *dev);
|
| 5208 | void __netdev_notify_peers(struct net_device *dev);
|
| 5209 | void netdev_notify_peers(struct net_device *dev);
|
| 5210 | void netdev_features_change(struct net_device *dev);
|
| 5211 |
|
| 5212 | void dev_load(struct net *net, const char *name);
|
| 5213 | struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
|
| 5214 | struct rtnl_link_stats64 *storage);
|
| 5215 | void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64,
|
| 5216 | const struct net_device_stats *netdev_stats);
|
| 5217 | void dev_fetch_sw_netstats(struct rtnl_link_stats64 *s,
|
| 5218 | const struct pcpu_sw_netstats __percpu *netstats);
|
| 5219 | void dev_get_tstats64(struct net_device *dev, struct rtnl_link_stats64 *s);
|
| 5220 |
|
| 5221 | void netdev_work_sched(struct net_device *dev, unsigned long events);
|
| 5222 | unsigned long netdev_work_cancel(struct net_device *dev, unsigned long mask);
|
| 5223 |
|
| 5224 | enum {
|
| 5225 | NESTED_SYNC_IMM_BIT,
|
| 5226 | NESTED_SYNC_TODO_BIT,
|
| 5227 | };
|
| 5228 |
|
| 5229 | #define __NESTED_SYNC_BIT(bit) ((u32)1 << (bit))
|
| 5230 | #define __NESTED_SYNC(name) __NESTED_SYNC_BIT(NESTED_SYNC_ ## name ## _BIT)
|
| 5231 |
|
| 5232 | #define NESTED_SYNC_IMM __NESTED_SYNC(IMM)
|
| 5233 | #define NESTED_SYNC_TODO __NESTED_SYNC(TODO)
|
| 5234 |
|
| 5235 | struct netdev_nested_priv {
|
| 5236 | unsigned char flags;
|
| 5237 | void *data;
|
| 5238 | };
|
| 5239 |
|
| 5240 | bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev);
|
| 5241 | struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev,
|
| 5242 | struct list_head **iter);
|
| 5243 |
|
| 5244 |
|
| 5245 | #define netdev_for_each_upper_dev_rcu(dev, updev, iter) \
|
| 5246 | for (iter = &(dev)->adj_list.upper, \
|
| 5247 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter)); \
|
| 5248 | updev; \
|
| 5249 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter)))
|
| 5250 |
|
| 5251 | int netdev_walk_all_upper_dev_rcu(struct net_device *dev,
|
| 5252 | int (*fn)(struct net_device *upper_dev,
|
| 5253 | struct netdev_nested_priv *priv),
|
| 5254 | struct netdev_nested_priv *priv);
|
| 5255 |
|
| 5256 | bool netdev_has_upper_dev_all_rcu(struct net_device *dev,
|
| 5257 | struct net_device *upper_dev);
|
| 5258 |
|
| 5259 | bool netdev_has_any_upper_dev(struct net_device *dev);
|
| 5260 |
|
| 5261 | void *netdev_lower_get_next_private(struct net_device *dev,
|
| 5262 | struct list_head **iter);
|
| 5263 | void *netdev_lower_get_next_private_rcu(struct net_device *dev,
|
| 5264 | struct list_head **iter);
|
| 5265 |
|
| 5266 | #define netdev_for_each_lower_private(dev, priv, iter) \
|
| 5267 | for (iter = (dev)->adj_list.lower.next, \
|
| 5268 | priv = netdev_lower_get_next_private(dev, &(iter)); \
|
| 5269 | priv; \
|
| 5270 | priv = netdev_lower_get_next_private(dev, &(iter)))
|
| 5271 |
|
| 5272 | #define netdev_for_each_lower_private_rcu(dev, priv, iter) \
|
| 5273 | for (iter = &(dev)->adj_list.lower, \
|
| 5274 | priv = netdev_lower_get_next_private_rcu(dev, &(iter)); \
|
| 5275 | priv; \
|
| 5276 | priv = netdev_lower_get_next_private_rcu(dev, &(iter)))
|
| 5277 |
|
| 5278 | void *netdev_lower_get_next(struct net_device *dev,
|
| 5279 | struct list_head **iter);
|
| 5280 |
|
| 5281 | #define netdev_for_each_lower_dev(dev, ldev, iter) \
|
| 5282 | for (iter = (dev)->adj_list.lower.next, \
|
| 5283 | ldev = netdev_lower_get_next(dev, &(iter)); \
|
| 5284 | ldev; \
|
| 5285 | ldev = netdev_lower_get_next(dev, &(iter)))
|
| 5286 |
|
| 5287 | struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev,
|
| 5288 | struct list_head **iter);
|
| 5289 | int netdev_walk_all_lower_dev(struct net_device *dev,
|
| 5290 | int (*fn)(struct net_device *lower_dev,
|
| 5291 | struct netdev_nested_priv *priv),
|
| 5292 | struct netdev_nested_priv *priv);
|
| 5293 | int netdev_walk_all_lower_dev_rcu(struct net_device *dev,
|
| 5294 | int (*fn)(struct net_device *lower_dev,
|
| 5295 | struct netdev_nested_priv *priv),
|
| 5296 | struct netdev_nested_priv *priv);
|
| 5297 |
|
| 5298 | void *netdev_adjacent_get_private(struct list_head *adj_list);
|
| 5299 | void *netdev_lower_get_first_private_rcu(struct net_device *dev);
|
| 5300 | struct net_device *netdev_master_upper_dev_get(struct net_device *dev);
|
| 5301 | struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev);
|
| 5302 | int netdev_upper_dev_link(struct net_device *dev, struct net_device *upper_dev,
|
| 5303 | struct netlink_ext_ack *extack);
|
| 5304 | int netdev_master_upper_dev_link(struct net_device *dev,
|
| 5305 | struct net_device *upper_dev,
|
| 5306 | void *upper_priv, void *upper_info,
|
| 5307 | struct netlink_ext_ack *extack);
|
| 5308 | void netdev_upper_dev_unlink(struct net_device *dev,
|
| 5309 | struct net_device *upper_dev);
|
| 5310 | int netdev_adjacent_change_prepare(struct net_device *old_dev,
|
| 5311 | struct net_device *new_dev,
|
| 5312 | struct net_device *dev,
|
| 5313 | struct netlink_ext_ack *extack);
|
| 5314 | void netdev_adjacent_change_commit(struct net_device *old_dev,
|
| 5315 | struct net_device *new_dev,
|
| 5316 | struct net_device *dev);
|
| 5317 | void netdev_adjacent_change_abort(struct net_device *old_dev,
|
| 5318 | struct net_device *new_dev,
|
| 5319 | struct net_device *dev);
|
| 5320 | void netdev_adjacent_rename_links(struct net_device *dev, char *oldname);
|
| 5321 | void *netdev_lower_dev_get_private(struct net_device *dev,
|
| 5322 | struct net_device *lower_dev);
|
| 5323 | void netdev_lower_state_changed(struct net_device *lower_dev,
|
| 5324 | void *lower_state_info);
|
| 5325 |
|
| 5326 | #define NETDEV_RSS_KEY_LEN 256
|
| 5327 | extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
|
| 5328 | void netdev_rss_key_fill(void *buffer, size_t len);
|
| 5329 |
|
| 5330 | int skb_checksum_help(struct sk_buff *skb);
|
| 5331 | int skb_crc32c_csum_help(struct sk_buff *skb);
|
| 5332 | int skb_csum_hwoffload_help(struct sk_buff *skb,
|
| 5333 | const netdev_features_t features);
|
| 5334 |
|
| 5335 | struct netdev_bonding_info {
|
| 5336 | ifslave slave;
|
| 5337 | ifbond master;
|
| 5338 | };
|
| 5339 |
|
| 5340 | struct netdev_notifier_bonding_info {
|
| 5341 | struct netdev_notifier_info info;
|
| 5342 | struct netdev_bonding_info bonding_info;
|
| 5343 | };
|
| 5344 |
|
| 5345 | void netdev_bonding_info_change(struct net_device *dev,
|
| 5346 | struct netdev_bonding_info *bonding_info);
|
| 5347 |
|
| 5348 | #if IS_ENABLED(CONFIG_ETHTOOL_NETLINK)
|
| 5349 | void ethtool_notify(struct net_device *dev, unsigned int cmd);
|
| 5350 | #else
|
| 5351 | static inline void ethtool_notify(struct net_device *dev, unsigned int cmd)
|
| 5352 | {
|
| 5353 | }
|
| 5354 | #endif
|
| 5355 |
|
| 5356 | __be16 skb_network_protocol(struct sk_buff *skb, int *depth);
|
| 5357 |
|
| 5358 | static inline bool can_checksum_protocol(netdev_features_t features,
|
| 5359 | __be16 protocol)
|
| 5360 | {
|
| 5361 | if (protocol == htons(ETH_P_FCOE))
|
| 5362 | return !!(features & NETIF_F_FCOE_CRC);
|
| 5363 |
|
| 5364 |
|
| 5365 |
|
| 5366 | if (features & NETIF_F_HW_CSUM) {
|
| 5367 |
|
| 5368 | return true;
|
| 5369 | }
|
| 5370 |
|
| 5371 | switch (protocol) {
|
| 5372 | case htons(ETH_P_IP):
|
| 5373 | return !!(features & NETIF_F_IP_CSUM);
|
| 5374 | case htons(ETH_P_IPV6):
|
| 5375 | return !!(features & NETIF_F_IPV6_CSUM);
|
| 5376 | default:
|
| 5377 | return false;
|
| 5378 | }
|
| 5379 | }
|
| 5380 |
|
| 5381 | #ifdef CONFIG_BUG
|
| 5382 | void netdev_rx_csum_fault(struct net_device *dev, struct sk_buff *skb);
|
| 5383 | #else
|
| 5384 | static inline void netdev_rx_csum_fault(struct net_device *dev,
|
| 5385 | struct sk_buff *skb)
|
| 5386 | {
|
| 5387 | }
|
| 5388 | #endif
|
| 5389 |
|
| 5390 | void net_enable_timestamp(void);
|
| 5391 | void net_disable_timestamp(void);
|
| 5392 |
|
| 5393 | static inline ktime_t netdev_get_tstamp(struct net_device *dev,
|
| 5394 | const struct skb_shared_hwtstamps *hwtstamps,
|
| 5395 | bool cycles)
|
| 5396 | {
|
| 5397 | const struct net_device_ops *ops = dev->netdev_ops;
|
| 5398 |
|
| 5399 | if (ops->ndo_get_tstamp)
|
| 5400 | return ops->ndo_get_tstamp(dev, hwtstamps, cycles);
|
| 5401 |
|
| 5402 | return hwtstamps->hwtstamp;
|
| 5403 | }
|
| 5404 |
|
| 5405 | #ifndef CONFIG_PREEMPT_RT
|
| 5406 | static inline void netdev_xmit_set_more(bool more)
|
| 5407 | {
|
| 5408 | __this_cpu_write(softnet_data.xmit.more, more);
|
| 5409 | }
|
| 5410 |
|
| 5411 | static inline bool netdev_xmit_more(void)
|
| 5412 | {
|
| 5413 | return __this_cpu_read(softnet_data.xmit.more);
|
| 5414 | }
|
| 5415 | #else
|
| 5416 | static inline void netdev_xmit_set_more(bool more)
|
| 5417 | {
|
| 5418 | current->net_xmit.more = more;
|
| 5419 | }
|
| 5420 |
|
| 5421 | static inline bool netdev_xmit_more(void)
|
| 5422 | {
|
| 5423 | return current->net_xmit.more;
|
| 5424 | }
|
| 5425 | #endif
|
| 5426 |
|
| 5427 | static inline netdev_tx_t __netdev_start_xmit(const struct net_device_ops *ops,
|
| 5428 | struct sk_buff *skb, struct net_device *dev,
|
| 5429 | bool more)
|
| 5430 | {
|
| 5431 | netdev_xmit_set_more(more);
|
| 5432 | return ops->ndo_start_xmit(skb, dev);
|
| 5433 | }
|
| 5434 |
|
| 5435 | static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev,
|
| 5436 | struct netdev_queue *txq, bool more)
|
| 5437 | {
|
| 5438 | const struct net_device_ops *ops = dev->netdev_ops;
|
| 5439 | netdev_tx_t rc;
|
| 5440 |
|
| 5441 | rc = __netdev_start_xmit(ops, skb, dev, more);
|
| 5442 | if (rc == NETDEV_TX_OK)
|
| 5443 | txq_trans_update(dev, txq);
|
| 5444 |
|
| 5445 | return rc;
|
| 5446 | }
|
| 5447 |
|
| 5448 | int netdev_class_create_file_ns(const struct class_attribute *class_attr,
|
| 5449 | const struct ns_common *ns);
|
| 5450 | void netdev_class_remove_file_ns(const struct class_attribute *class_attr,
|
| 5451 | const struct ns_common *ns);
|
| 5452 |
|
| 5453 | extern const struct kobj_ns_type_operations net_ns_type_operations;
|
| 5454 |
|
| 5455 | const char *netdev_drivername(const struct net_device *dev);
|
| 5456 |
|
| 5457 | static inline netdev_features_t netdev_intersect_features(netdev_features_t f1,
|
| 5458 | netdev_features_t f2)
|
| 5459 | {
|
| 5460 | if ((f1 ^ f2) & NETIF_F_HW_CSUM) {
|
| 5461 | if (f1 & NETIF_F_HW_CSUM)
|
| 5462 | f1 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM);
|
| 5463 | else
|
| 5464 | f2 |= (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM);
|
| 5465 | }
|
| 5466 |
|
| 5467 | return f1 & f2;
|
| 5468 | }
|
| 5469 |
|
| 5470 | static inline netdev_features_t netdev_get_wanted_features(
|
| 5471 | struct net_device *dev)
|
| 5472 | {
|
| 5473 | return (dev->features & ~dev->hw_features) | dev->wanted_features;
|
| 5474 | }
|
| 5475 | netdev_features_t netdev_increment_features(netdev_features_t all,
|
| 5476 | netdev_features_t one, netdev_features_t mask);
|
| 5477 |
|
| 5478 | |
| 5479 | * Performing the GSO segmentation before last device
|
| 5480 | * is a performance improvement.
|
| 5481 |
|
| 5482 | static inline netdev_features_t netdev_add_tso_features(netdev_features_t features,
|
| 5483 | netdev_features_t mask)
|
| 5484 | {
|
| 5485 | return netdev_increment_features(features, NETIF_F_ALL_TSO |
|
| 5486 | NETIF_F_ALL_FOR_ALL, mask);
|
| 5487 | }
|
| 5488 |
|
| 5489 | int __netdev_update_features(struct net_device *dev);
|
| 5490 | void netdev_update_features(struct net_device *dev);
|
| 5491 | void netdev_change_features(struct net_device *dev);
|
| 5492 | void netdev_compute_master_upper_features(struct net_device *dev, bool update_header);
|
| 5493 |
|
| 5494 | void netif_stacked_transfer_operstate(const struct net_device *rootdev,
|
| 5495 | struct net_device *dev);
|
| 5496 |
|
| 5497 | netdev_features_t passthru_features_check(struct sk_buff *skb,
|
| 5498 | struct net_device *dev,
|
| 5499 | netdev_features_t features);
|
| 5500 | netdev_features_t netif_skb_features(struct sk_buff *skb);
|
| 5501 | void skb_warn_bad_offload(const struct sk_buff *skb);
|
| 5502 |
|
| 5503 | static inline bool net_gso_ok(netdev_features_t features, int gso_type)
|
| 5504 | {
|
| 5505 | netdev_features_t feature;
|
| 5506 |
|
| 5507 | if (gso_type & (SKB_GSO_TCP_FIXEDID | SKB_GSO_TCP_FIXEDID_INNER))
|
| 5508 | gso_type |= __SKB_GSO_TCP_FIXEDID;
|
| 5509 |
|
| 5510 | feature = ((netdev_features_t)gso_type << NETIF_F_GSO_SHIFT) & NETIF_F_GSO_MASK;
|
| 5511 |
|
| 5512 |
|
| 5513 | BUILD_BUG_ON(SKB_GSO_TCPV4 != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT));
|
| 5514 | BUILD_BUG_ON(SKB_GSO_DODGY != (NETIF_F_GSO_ROBUST >> NETIF_F_GSO_SHIFT));
|
| 5515 | BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT));
|
| 5516 | BUILD_BUG_ON(__SKB_GSO_TCP_FIXEDID != (NETIF_F_TSO_MANGLEID >> NETIF_F_GSO_SHIFT));
|
| 5517 | BUILD_BUG_ON(SKB_GSO_TCPV6 != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT));
|
| 5518 | BUILD_BUG_ON(SKB_GSO_FCOE != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT));
|
| 5519 | BUILD_BUG_ON(SKB_GSO_GRE != (NETIF_F_GSO_GRE >> NETIF_F_GSO_SHIFT));
|
| 5520 | BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT));
|
| 5521 | BUILD_BUG_ON(SKB_GSO_IPXIP4 != (NETIF_F_GSO_IPXIP4 >> NETIF_F_GSO_SHIFT));
|
| 5522 | BUILD_BUG_ON(SKB_GSO_IPXIP6 != (NETIF_F_GSO_IPXIP6 >> NETIF_F_GSO_SHIFT));
|
| 5523 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT));
|
| 5524 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT));
|
| 5525 | BUILD_BUG_ON(SKB_GSO_PARTIAL != (NETIF_F_GSO_PARTIAL >> NETIF_F_GSO_SHIFT));
|
| 5526 | BUILD_BUG_ON(SKB_GSO_TUNNEL_REMCSUM != (NETIF_F_GSO_TUNNEL_REMCSUM >> NETIF_F_GSO_SHIFT));
|
| 5527 | BUILD_BUG_ON(SKB_GSO_SCTP != (NETIF_F_GSO_SCTP >> NETIF_F_GSO_SHIFT));
|
| 5528 | BUILD_BUG_ON(SKB_GSO_ESP != (NETIF_F_GSO_ESP >> NETIF_F_GSO_SHIFT));
|
| 5529 | BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_GSO_UDP >> NETIF_F_GSO_SHIFT));
|
| 5530 | BUILD_BUG_ON(SKB_GSO_UDP_L4 != (NETIF_F_GSO_UDP_L4 >> NETIF_F_GSO_SHIFT));
|
| 5531 | BUILD_BUG_ON(SKB_GSO_FRAGLIST != (NETIF_F_GSO_FRAGLIST >> NETIF_F_GSO_SHIFT));
|
| 5532 | BUILD_BUG_ON(SKB_GSO_TCP_ACCECN !=
|
| 5533 | (NETIF_F_GSO_ACCECN >> NETIF_F_GSO_SHIFT));
|
| 5534 |
|
| 5535 | return (features & feature) == feature;
|
| 5536 | }
|
| 5537 |
|
| 5538 | static inline bool skb_gso_ok(struct sk_buff *skb, netdev_features_t features)
|
| 5539 | {
|
| 5540 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) &&
|
| 5541 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST));
|
| 5542 | }
|
| 5543 |
|
| 5544 | static inline bool netif_needs_gso(struct sk_buff *skb,
|
| 5545 | netdev_features_t features)
|
| 5546 | {
|
| 5547 | return skb_is_gso(skb) && (!skb_gso_ok(skb, features) ||
|
| 5548 | unlikely((skb->ip_summed != CHECKSUM_PARTIAL) &&
|
| 5549 | (skb->ip_summed != CHECKSUM_UNNECESSARY)));
|
| 5550 | }
|
| 5551 |
|
| 5552 | void netif_set_tso_max_size(struct net_device *dev, unsigned int size);
|
| 5553 | void netif_set_tso_max_segs(struct net_device *dev, unsigned int segs);
|
| 5554 | void netif_inherit_tso_max(struct net_device *to,
|
| 5555 | const struct net_device *from);
|
| 5556 |
|
| 5557 | static inline unsigned int
|
| 5558 | netif_get_gro_max_size(const struct net_device *dev, const struct sk_buff *skb)
|
| 5559 | {
|
| 5560 |
|
| 5561 | return skb->protocol == htons(ETH_P_IPV6) ?
|
| 5562 | READ_ONCE(dev->gro_max_size) :
|
| 5563 | READ_ONCE(dev->gro_ipv4_max_size);
|
| 5564 | }
|
| 5565 |
|
| 5566 | static inline unsigned int
|
| 5567 | netif_get_gso_max_size(const struct net_device *dev, const struct sk_buff *skb)
|
| 5568 | {
|
| 5569 |
|
| 5570 | return skb->protocol == htons(ETH_P_IPV6) ?
|
| 5571 | READ_ONCE(dev->gso_max_size) :
|
| 5572 | READ_ONCE(dev->gso_ipv4_max_size);
|
| 5573 | }
|
| 5574 |
|
| 5575 | static inline bool netif_is_macsec(const struct net_device *dev)
|
| 5576 | {
|
| 5577 | return dev->priv_flags & IFF_MACSEC;
|
| 5578 | }
|
| 5579 |
|
| 5580 | static inline bool netif_is_macvlan(const struct net_device *dev)
|
| 5581 | {
|
| 5582 | return dev->priv_flags & IFF_MACVLAN;
|
| 5583 | }
|
| 5584 |
|
| 5585 | static inline bool netif_is_macvlan_port(const struct net_device *dev)
|
| 5586 | {
|
| 5587 | return dev->priv_flags & IFF_MACVLAN_PORT;
|
| 5588 | }
|
| 5589 |
|
| 5590 | static inline bool netif_is_bond_master(const struct net_device *dev)
|
| 5591 | {
|
| 5592 | return dev->flags & IFF_MASTER && dev->priv_flags & IFF_BONDING;
|
| 5593 | }
|
| 5594 |
|
| 5595 | static inline bool netif_is_bond_slave(const struct net_device *dev)
|
| 5596 | {
|
| 5597 | return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING;
|
| 5598 | }
|
| 5599 |
|
| 5600 | static inline bool netif_supports_nofcs(struct net_device *dev)
|
| 5601 | {
|
| 5602 | return dev->priv_flags & IFF_SUPP_NOFCS;
|
| 5603 | }
|
| 5604 |
|
| 5605 | static inline bool netif_has_l3_rx_handler(const struct net_device *dev)
|
| 5606 | {
|
| 5607 | return dev->priv_flags & IFF_L3MDEV_RX_HANDLER;
|
| 5608 | }
|
| 5609 |
|
| 5610 | static inline bool netif_is_l3_master(const struct net_device *dev)
|
| 5611 | {
|
| 5612 | return dev->priv_flags & IFF_L3MDEV_MASTER;
|
| 5613 | }
|
| 5614 |
|
| 5615 | static inline bool netif_is_l3_slave(const struct net_device *dev)
|
| 5616 | {
|
| 5617 | return dev->priv_flags & IFF_L3MDEV_SLAVE;
|
| 5618 | }
|
| 5619 |
|
| 5620 | static inline int dev_sdif(const struct net_device *dev)
|
| 5621 | {
|
| 5622 | #ifdef CONFIG_NET_L3_MASTER_DEV
|
| 5623 | if (netif_is_l3_slave(dev))
|
| 5624 | return dev->ifindex;
|
| 5625 | #endif
|
| 5626 | return 0;
|
| 5627 | }
|
| 5628 |
|
| 5629 | static inline bool netif_is_bridge_master(const struct net_device *dev)
|
| 5630 | {
|
| 5631 | return dev->priv_flags & IFF_EBRIDGE;
|
| 5632 | }
|
| 5633 |
|
| 5634 | static inline bool netif_is_bridge_port(const struct net_device *dev)
|
| 5635 | {
|
| 5636 | return dev->priv_flags & IFF_BRIDGE_PORT;
|
| 5637 | }
|
| 5638 |
|
| 5639 | static inline bool netif_is_ovs_master(const struct net_device *dev)
|
| 5640 | {
|
| 5641 | return dev->priv_flags & IFF_OPENVSWITCH;
|
| 5642 | }
|
| 5643 |
|
| 5644 | static inline bool netif_is_ovs_port(const struct net_device *dev)
|
| 5645 | {
|
| 5646 | return dev->priv_flags & IFF_OVS_DATAPATH;
|
| 5647 | }
|
| 5648 |
|
| 5649 | static inline bool netif_is_any_bridge_master(const struct net_device *dev)
|
| 5650 | {
|
| 5651 | return netif_is_bridge_master(dev) || netif_is_ovs_master(dev);
|
| 5652 | }
|
| 5653 |
|
| 5654 | static inline bool netif_is_any_bridge_port(const struct net_device *dev)
|
| 5655 | {
|
| 5656 | return netif_is_bridge_port(dev) || netif_is_ovs_port(dev);
|
| 5657 | }
|
| 5658 |
|
| 5659 | static inline bool netif_is_team_master(const struct net_device *dev)
|
| 5660 | {
|
| 5661 | return dev->priv_flags & IFF_TEAM;
|
| 5662 | }
|
| 5663 |
|
| 5664 | static inline bool netif_is_team_port(const struct net_device *dev)
|
| 5665 | {
|
| 5666 | return dev->priv_flags & IFF_TEAM_PORT;
|
| 5667 | }
|
| 5668 |
|
| 5669 | static inline bool netif_is_lag_master(const struct net_device *dev)
|
| 5670 | {
|
| 5671 | return netif_is_bond_master(dev) || netif_is_team_master(dev);
|
| 5672 | }
|
| 5673 |
|
| 5674 | static inline bool netif_is_lag_port(const struct net_device *dev)
|
| 5675 | {
|
| 5676 | return netif_is_bond_slave(dev) || netif_is_team_port(dev);
|
| 5677 | }
|
| 5678 |
|
| 5679 | bool netif_is_rxfh_configured(const struct net_device *dev);
|
| 5680 |
|
| 5681 | static inline bool netif_is_failover(const struct net_device *dev)
|
| 5682 | {
|
| 5683 | return dev->priv_flags & IFF_FAILOVER;
|
| 5684 | }
|
| 5685 |
|
| 5686 | static inline bool netif_is_failover_slave(const struct net_device *dev)
|
| 5687 | {
|
| 5688 | return dev->priv_flags & IFF_FAILOVER_SLAVE;
|
| 5689 | }
|
| 5690 |
|
| 5691 |
|
| 5692 | static inline void netif_keep_dst(struct net_device *dev)
|
| 5693 | {
|
| 5694 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM);
|
| 5695 | }
|
| 5696 |
|
| 5697 |
|
| 5698 | static inline bool netif_reduces_vlan_mtu(struct net_device *dev)
|
| 5699 | {
|
| 5700 |
|
| 5701 | return netif_is_macsec(dev);
|
| 5702 | }
|
| 5703 |
|
| 5704 | extern struct pernet_operations __net_initdata loopback_net_ops;
|
| 5705 |
|
| 5706 |
|
| 5707 |
|
| 5708 |
|
| 5709 |
|
| 5710 | static inline const char *netdev_name(const struct net_device *dev)
|
| 5711 | {
|
| 5712 | if (!dev->name[0] || strchr(dev->name, '%'))
|
| 5713 | return "(unnamed net_device)";
|
| 5714 | return dev->name;
|
| 5715 | }
|
| 5716 |
|
| 5717 | static inline const char *netdev_reg_state(const struct net_device *dev)
|
| 5718 | {
|
| 5719 | u8 reg_state = READ_ONCE(dev->reg_state);
|
| 5720 |
|
| 5721 | switch (reg_state) {
|
| 5722 | case NETREG_UNINITIALIZED: return " (uninitialized)";
|
| 5723 | case NETREG_REGISTERED: return "";
|
| 5724 | case NETREG_UNREGISTERING: return " (unregistering)";
|
| 5725 | case NETREG_UNREGISTERED: return " (unregistered)";
|
| 5726 | case NETREG_RELEASED: return " (released)";
|
| 5727 | case NETREG_DUMMY: return " (dummy)";
|
| 5728 | }
|
| 5729 |
|
| 5730 | WARN_ONCE(1, "%s: unknown reg_state %d\n", dev->name, reg_state);
|
| 5731 | return " (unknown)";
|
| 5732 | }
|
| 5733 |
|
| 5734 | #define MODULE_ALIAS_NETDEV(device) \
|
| 5735 | MODULE_ALIAS("netdev-" device)
|
| 5736 |
|
| 5737 | |
| 5738 | * netdev_WARN() acts like dev_printk(), but with the key difference
|
| 5739 | * of using a WARN/WARN_ON to get the message out, including the
|
| 5740 | * file/line information and a backtrace.
|
| 5741 |
|
| 5742 | #define netdev_WARN(dev, format, args...) \
|
| 5743 | WARN(1, "netdevice: %s%s: " format, netdev_name(dev), \
|
| 5744 | netdev_reg_state(dev), ##args)
|
| 5745 |
|
| 5746 | #define netdev_WARN_ONCE(dev, format, args...) \
|
| 5747 | WARN_ONCE(1, "netdevice: %s%s: " format, netdev_name(dev), \
|
| 5748 | netdev_reg_state(dev), ##args)
|
| 5749 |
|
| 5750 | |
| 5751 | * The list of packet types we will receive (as opposed to discard)
|
| 5752 | * and the routines to invoke.
|
| 5753 | *
|
| 5754 | * Why 16. Because with 16 the only overlap we get on a hash of the
|
| 5755 | * low nibble of the protocol value is RARP/SNAP/X.25.
|
| 5756 | *
|
| 5757 | * 0800 IP
|
| 5758 | * 0001 802.3
|
| 5759 | * 0002 AX.25
|
| 5760 | * 0004 802.2
|
| 5761 | * 8035 RARP
|
| 5762 | * 0005 SNAP
|
| 5763 | * 0805 X.25
|
| 5764 | * 0806 ARP
|
| 5765 | * 8137 IPX
|
| 5766 | * 0009 Localtalk
|
| 5767 | * 86DD IPv6
|
| 5768 |
|
| 5769 | #define PTYPE_HASH_SIZE (16)
|
| 5770 | #define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1)
|
| 5771 |
|
| 5772 | extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
|
| 5773 |
|
| 5774 | extern struct net_device *blackhole_netdev;
|
| 5775 |
|
| 5776 |
|
| 5777 | #define DEV_STATS_INC(DEV, FIELD) atomic_long_inc(&(DEV)->stats.__##FIELD)
|
| 5778 | #define DEV_STATS_ADD(DEV, FIELD, VAL) \
|
| 5779 | atomic_long_add((VAL), &(DEV)->stats.__##FIELD)
|
| 5780 | #define DEV_STATS_READ(DEV, FIELD) atomic_long_read(&(DEV)->stats.__##FIELD)
|
| 5781 |
|
| 5782 | #endif
|