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 struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
24 unsigned short num, __be32 raddr,
25 __be32 laddr, int dif, int sdif);
26
27 int raw_abort(struct sock *sk, int err);
28 void raw_icmp_error(struct sk_buff *, int, u32);
29 int raw_local_deliver(struct sk_buff *, int);
30
31 int raw_rcv(struct sock *, struct sk_buff *);
32
33 #define RAW_HTABLE_SIZE MAX_INET_PROTOS
34
35 struct raw_hashinfo {
36 rwlock_t lock;
37 struct hlist_head ht[RAW_HTABLE_SIZE];
38 };
39
40 #ifdef CONFIG_PROC_FS
41 int raw_proc_init(void);
42 void raw_proc_exit(void);
43
44 struct raw_iter_state {
45 struct seq_net_private p;
46 int bucket;
47 };
48
raw_seq_private(struct seq_file * seq)49 static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
50 {
51 return seq->private;
52 }
53 void *raw_seq_start(struct seq_file *seq, loff_t *pos);
54 void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos);
55 void raw_seq_stop(struct seq_file *seq, void *v);
56 #endif
57
58 int raw_hash_sk(struct sock *sk);
59 void raw_unhash_sk(struct sock *sk);
60 void raw_init(void);
61
62 struct raw_sock {
63 /* inet_sock has to be the first member */
64 struct inet_sock inet;
65 struct icmp_filter filter;
66 u32 ipmr_table;
67 };
68
raw_sk(const struct sock * sk)69 static inline struct raw_sock *raw_sk(const struct sock *sk)
70 {
71 return (struct raw_sock *)sk;
72 }
73
raw_sk_bound_dev_eq(struct net * net,int bound_dev_if,int dif,int sdif)74 static inline bool raw_sk_bound_dev_eq(struct net *net, int bound_dev_if,
75 int dif, int sdif)
76 {
77 #if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
78 return inet_bound_dev_eq(!!net->ipv4.sysctl_raw_l3mdev_accept,
79 bound_dev_if, dif, sdif);
80 #else
81 return inet_bound_dev_eq(true, bound_dev_if, dif, sdif);
82 #endif
83 }
84
85 #endif /* _RAW_H */
86