projects/linux·blob da89fb16 · refs

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1/*
2 * Network device features.
3 *
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 */
10#ifndef _LINUX_NETDEV_FEATURES_H
11#define _LINUX_NETDEV_FEATURES_H
12
13#include <linux/types.h>
14
15typedef u64 netdev_features_t;
16
17enum {
18 NETIF_F_SG_BIT, /* Scatter/gather IO. */
19 NETIF_F_IP_CSUM_BIT, /* Can checksum TCP/UDP over IPv4. */
20 __UNUSED_NETIF_F_1,
21 NETIF_F_HW_CSUM_BIT, /* Can checksum all the packets. */
22 NETIF_F_IPV6_CSUM_BIT, /* Can checksum TCP/UDP over IPV6 */
23 NETIF_F_HIGHDMA_BIT, /* Can DMA to high memory. */
24 NETIF_F_FRAGLIST_BIT, /* Scatter/gather IO. */
25 NETIF_F_HW_VLAN_TX_BIT, /* Transmit VLAN hw acceleration */
26 NETIF_F_HW_VLAN_RX_BIT, /* Receive VLAN hw acceleration */
27 NETIF_F_HW_VLAN_FILTER_BIT, /* Receive filtering on VLAN */
28 NETIF_F_VLAN_CHALLENGED_BIT, /* Device cannot handle VLAN packets */
29 NETIF_F_GSO_BIT, /* Enable software GSO. */
30 NETIF_F_LLTX_BIT, /* LockLess TX - deprecated. Please */
31 /* do not use LLTX in new drivers */
32 NETIF_F_NETNS_LOCAL_BIT, /* Does not change network namespaces */
33 NETIF_F_GRO_BIT, /* Generic receive offload */
34 NETIF_F_LRO_BIT, /* large receive offload */
35
36 /**/NETIF_F_GSO_SHIFT, /* keep the order of SKB_GSO_* bits */
37 NETIF_F_TSO_BIT /* ... TCPv4 segmentation */
38 = NETIF_F_GSO_SHIFT,
39 NETIF_F_UFO_BIT, /* ... UDPv4 fragmentation */
40 NETIF_F_GSO_ROBUST_BIT, /* ... ->SKB_GSO_DODGY */
41 NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */
42 NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */
43 NETIF_F_FSO_BIT, /* ... FCoE segmentation */
44 NETIF_F_GSO_RESERVED1, /* ... free (fill GSO_MASK to 8 bits) */
45 /**/NETIF_F_GSO_LAST, /* [can't be last bit, see GSO_MASK] */
46 NETIF_F_GSO_RESERVED2 /* ... free (fill GSO_MASK to 8 bits) */
47 = NETIF_F_GSO_LAST,
48
49 NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */
50 NETIF_F_SCTP_CSUM_BIT, /* SCTP checksum offload */
51 NETIF_F_FCOE_MTU_BIT, /* Supports max FCoE MTU, 2158 bytes*/
52 NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */
53 NETIF_F_RXHASH_BIT, /* Receive hashing offload */
54 NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */
55 NETIF_F_NOCACHE_COPY_BIT, /* Use no-cache copyfromuser */
56 NETIF_F_LOOPBACK_BIT, /* Enable loopback */
57 NETIF_F_RXFCS_BIT, /* Append FCS to skb pkt data */
58 NETIF_F_RXALL_BIT, /* Receive errored frames too */
59
60 /*
61 * Add your fresh new feature above and remember to update
62 * netdev_features_strings[] in net/core/ethtool.c and maybe
63 * some feature mask #defines below. Please also describe it
64 * in Documentation/networking/netdev-features.txt.
65 */
66
67 /**/NETDEV_FEATURE_COUNT
68};
69
70/* copy'n'paste compression ;) */
71#define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit))
72#define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT)
73
74#define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC)
75#define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU)
76#define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST)
77#define NETIF_F_FSO __NETIF_F(FSO)
78#define NETIF_F_GRO __NETIF_F(GRO)
79#define NETIF_F_GSO __NETIF_F(GSO)
80#define NETIF_F_GSO_ROBUST __NETIF_F(GSO_ROBUST)
81#define NETIF_F_HIGHDMA __NETIF_F(HIGHDMA)
82#define NETIF_F_HW_CSUM __NETIF_F(HW_CSUM)
83#define NETIF_F_HW_VLAN_FILTER __NETIF_F(HW_VLAN_FILTER)
84#define NETIF_F_HW_VLAN_RX __NETIF_F(HW_VLAN_RX)
85#define NETIF_F_HW_VLAN_TX __NETIF_F(HW_VLAN_TX)
86#define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM)
87#define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM)
88#define NETIF_F_LLTX __NETIF_F(LLTX)
89#define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK)
90#define NETIF_F_LRO __NETIF_F(LRO)
91#define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL)
92#define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY)
93#define NETIF_F_NTUPLE __NETIF_F(NTUPLE)
94#define NETIF_F_RXCSUM __NETIF_F(RXCSUM)
95#define NETIF_F_RXHASH __NETIF_F(RXHASH)
96#define NETIF_F_SCTP_CSUM __NETIF_F(SCTP_CSUM)
97#define NETIF_F_SG __NETIF_F(SG)
98#define NETIF_F_TSO6 __NETIF_F(TSO6)
99#define NETIF_F_TSO_ECN __NETIF_F(TSO_ECN)
100#define NETIF_F_TSO __NETIF_F(TSO)
101#define NETIF_F_UFO __NETIF_F(UFO)
102#define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED)
103#define NETIF_F_RXFCS __NETIF_F(RXFCS)
104#define NETIF_F_RXALL __NETIF_F(RXALL)
105
106/* Features valid for ethtool to change */
107/* = all defined minus driver/device-class-related */
108#define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \
109 NETIF_F_LLTX | NETIF_F_NETNS_LOCAL)
110
111/* remember that ((t)1 << t_BITS) is undefined in C99 */
112#define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \
113 (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \
114 ~NETIF_F_NEVER_CHANGE)
115
116/* Segmentation offload feature mask */
117#define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \
118 __NETIF_F_BIT(NETIF_F_GSO_SHIFT))
119
120/* List of features with software fallbacks. */
121#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \
122 NETIF_F_TSO6 | NETIF_F_UFO)
123
124#define NETIF_F_GEN_CSUM NETIF_F_HW_CSUM
125#define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
126#define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
127#define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
128
129#define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
130
131#define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \
132 NETIF_F_FSO)
133
134/*
135 * If one device supports one of these features, then enable them
136 * for all in netdev_increment_features.
137 */
138#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
139 NETIF_F_SG | NETIF_F_HIGHDMA | \
140 NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)
141/*
142 * If one device doesn't support one of these features, then disable it
143 * for all in netdev_increment_features.
144 */
145#define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO)
146
147/* changeable features with no special hardware requirements */
148#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO)
149
150#endif /* _LINUX_NETDEV_FEATURES_H */