1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * Definitions for the RAW-IP module.
7 *
8 * Version: @(#)raw.h 1.0.2 05/07/93
9 *
10 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version
15 * 2 of the License, or (at your option) any later version.
16 */
17#ifndef _RAW_H
18#define _RAW_H
19
20#include <net/inet_sock.h>
21#include <net/protocol.h>
22#include <linux/icmp.h>
23
24extern struct proto raw_prot;
25
26extern struct raw_hashinfo raw_v4_hashinfo;
27struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
28 unsigned short num, __be32 raddr,
29 __be32 laddr, int dif, int sdif);
30
31int raw_abort(struct sock *sk, int err);
32void raw_icmp_error(struct sk_buff *, int, u32);
33int raw_local_deliver(struct sk_buff *, int);
34
35int raw_rcv(struct sock *, struct sk_buff *);
36
37#define RAW_HTABLE_SIZE MAX_INET_PROTOS
38
39struct raw_hashinfo {
40 rwlock_t lock;
41 struct hlist_head ht[RAW_HTABLE_SIZE];
42};
43
44#ifdef CONFIG_PROC_FS
45int raw_proc_init(void);
46void raw_proc_exit(void);
47
48struct raw_iter_state {
49 struct seq_net_private p;
50 int bucket;
51};
52
53static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
54{
55 return seq->private;
56}
57void *raw_seq_start(struct seq_file *seq, loff_t *pos);
58void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos);
59void raw_seq_stop(struct seq_file *seq, void *v);
60#endif
61
62int raw_hash_sk(struct sock *sk);
63void raw_unhash_sk(struct sock *sk);
64void raw_init(void);
65
66struct raw_sock {
67 /* inet_sock has to be the first member */
68 struct inet_sock inet;
69 struct icmp_filter filter;
70 u32 ipmr_table;
71};
72
73static inline struct raw_sock *raw_sk(const struct sock *sk)
74{
75 return (struct raw_sock *)sk;
76}
77
78static inline bool raw_sk_bound_dev_eq(struct net *net, int bound_dev_if,
79 int dif, int sdif)
80{
81#if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
82 return inet_bound_dev_eq(!!net->ipv4.sysctl_raw_l3mdev_accept,
83 bound_dev_if, dif, sdif);
84#else
85 return inet_bound_dev_eq(true, bound_dev_if, dif, sdif);
86#endif
87}
88
89#endif /* _RAW_H */
90