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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 RAW-IP module.
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| 8 | *
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| 9 | * Version: @(#)raw.h 1.0.2 05/07/93
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| 10 | *
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| 11 | * Author: Fred N. van Kempen, <[email protected]>
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| 12 |
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| 13 | #ifndef _RAW_H
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| 14 | #define _RAW_H
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| 15 |
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| 16 | #include <net/inet_sock.h>
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| 17 | #include <net/protocol.h>
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| 18 | #include <net/netns/hash.h>
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| 19 | #include <linux/hash.h>
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| 20 | #include <linux/icmp.h>
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| 21 |
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| 22 | extern struct proto raw_prot;
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| 23 |
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| 24 | extern struct raw_hashinfo raw_v4_hashinfo;
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| 25 | bool raw_v4_match(struct net *net, const struct sock *sk, unsigned short num,
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| 26 | __be32 raddr, __be32 laddr, int dif, int sdif);
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| 27 |
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| 28 | int raw_abort(struct sock *sk, int err);
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| 29 | void raw_icmp_error(struct sk_buff *, int, u32);
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| 30 | int raw_local_deliver(struct sk_buff *, int);
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| 31 |
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| 32 | int raw_rcv(struct sock *, struct sk_buff *);
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| 33 |
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| 34 | #define RAW_HTABLE_LOG 8
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| 35 | #define RAW_HTABLE_SIZE (1U << RAW_HTABLE_LOG)
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| 36 |
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| 37 | struct raw_hashinfo {
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| 38 | spinlock_t lock;
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| 39 |
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| 40 | struct hlist_head ht[RAW_HTABLE_SIZE] ____cacheline_aligned;
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| 41 | };
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| 42 |
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| 43 | static inline u32 raw_hashfunc(const struct net *net, u32 proto)
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| 44 | {
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| 45 | return hash_32(net_hash_mix(net) ^ proto, RAW_HTABLE_LOG);
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| 46 | }
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| 47 |
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| 48 | static inline void raw_hashinfo_init(struct raw_hashinfo *hashinfo)
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| 49 | {
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| 50 | int i;
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| 51 |
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| 52 | spin_lock_init(&hashinfo->lock);
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| 53 | for (i = 0; i < RAW_HTABLE_SIZE; i++)
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| 54 | INIT_HLIST_HEAD(&hashinfo->ht[i]);
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| 55 | }
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| 56 |
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| 57 | #ifdef CONFIG_PROC_FS
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| 58 | int raw_proc_init(void);
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| 59 | void raw_proc_exit(void);
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| 60 |
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| 61 | struct raw_iter_state {
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| 62 | struct seq_net_private p;
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| 63 | int bucket;
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| 64 | };
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| 65 |
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| 66 | static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
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| 67 | {
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| 68 | return seq->private;
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| 69 | }
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| 70 | void *raw_seq_start(struct seq_file *seq, loff_t *pos);
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| 71 | void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos);
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| 72 | void raw_seq_stop(struct seq_file *seq, void *v);
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| 73 | #endif
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| 74 |
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| 75 | int raw_hash_sk(struct sock *sk);
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| 76 | void raw_unhash_sk(struct sock *sk);
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| 77 | void raw_init(void);
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| 78 |
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| 79 | struct raw_sock {
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| 80 |
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| 81 | struct inet_sock inet;
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| 82 | struct icmp_filter filter;
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| 83 | u32 ipmr_table;
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| 84 | struct numa_drop_counters drop_counters;
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| 85 | };
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| 86 |
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| 87 | #define raw_sk(ptr) container_of_const(ptr, struct raw_sock, inet.sk)
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| 88 |
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| 89 | static inline bool raw_sk_bound_dev_eq(struct net *net, int bound_dev_if,
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| 90 | int dif, int sdif)
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| 91 | {
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| 92 | #if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
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| 93 | return inet_bound_dev_eq(READ_ONCE(net->ipv4.sysctl_raw_l3mdev_accept),
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| 94 | bound_dev_if, dif, sdif);
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| 95 | #else
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| 96 | return inet_bound_dev_eq(true, bound_dev_if, dif, sdif);
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| 97 | #endif
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| 98 | }
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| 99 |
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| 100 | #endif
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