1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * INET An implementation of the TCP/IP protocol suite for the LINUX
4 * operating system. INET is implemented using the BSD Socket
5 * interface as the means of communication with the user level.
6 *
7 * Definitions for the RAW-IP module.
8 *
9 * Version: @(#)raw.h 1.0.2 05/07/93
10 *
11 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
12 */
13 #ifndef _RAW_H
14 #define _RAW_H
15
16 #include <net/inet_sock.h>
17 #include <net/protocol.h>
18 #include <linux/icmp.h>
19
20 extern struct proto raw_prot;
21
22 extern struct raw_hashinfo raw_v4_hashinfo;
23 bool raw_v4_match(struct net *net, struct sock *sk, unsigned short num,
24 __be32 raddr, __be32 laddr, int dif, int sdif);
25
26 int raw_abort(struct sock *sk, int err);
27 void raw_icmp_error(struct sk_buff *, int, u32);
28 int raw_local_deliver(struct sk_buff *, int);
29
30 int raw_rcv(struct sock *, struct sk_buff *);
31
32 #define RAW_HTABLE_SIZE MAX_INET_PROTOS
33
34 struct raw_hashinfo {
35 spinlock_t lock;
36 struct hlist_nulls_head ht[RAW_HTABLE_SIZE];
37 };
38
raw_hashinfo_init(struct raw_hashinfo * hashinfo)39 static inline void raw_hashinfo_init(struct raw_hashinfo *hashinfo)
40 {
41 int i;
42
43 spin_lock_init(&hashinfo->lock);
44 for (i = 0; i < RAW_HTABLE_SIZE; i++)
45 INIT_HLIST_NULLS_HEAD(&hashinfo->ht[i], i);
46 }
47
48 #ifdef CONFIG_PROC_FS
49 int raw_proc_init(void);
50 void raw_proc_exit(void);
51
52 struct raw_iter_state {
53 struct seq_net_private p;
54 int bucket;
55 };
56
raw_seq_private(struct seq_file * seq)57 static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
58 {
59 return seq->private;
60 }
61 void *raw_seq_start(struct seq_file *seq, loff_t *pos);
62 void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos);
63 void raw_seq_stop(struct seq_file *seq, void *v);
64 #endif
65
66 int raw_hash_sk(struct sock *sk);
67 void raw_unhash_sk(struct sock *sk);
68 void raw_init(void);
69
70 struct raw_sock {
71 /* inet_sock has to be the first member */
72 struct inet_sock inet;
73 struct icmp_filter filter;
74 u32 ipmr_table;
75 };
76
raw_sk(const struct sock * sk)77 static inline struct raw_sock *raw_sk(const struct sock *sk)
78 {
79 return (struct raw_sock *)sk;
80 }
81
raw_sk_bound_dev_eq(struct net * net,int bound_dev_if,int dif,int sdif)82 static inline bool raw_sk_bound_dev_eq(struct net *net, int bound_dev_if,
83 int dif, int sdif)
84 {
85 #if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
86 return inet_bound_dev_eq(READ_ONCE(net->ipv4.sysctl_raw_l3mdev_accept),
87 bound_dev_if, dif, sdif);
88 #else
89 return inet_bound_dev_eq(true, bound_dev_if, dif, sdif);
90 #endif
91 }
92
93 #endif /* _RAW_H */
94
