1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * INET An implementation of the TCP/IP protocol suite for the LINUX
4*4882a593Smuzhiyun * operating system. INET is implemented using the BSD Socket
5*4882a593Smuzhiyun * interface as the means of communication with the user level.
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Definitions for the RAW-IP module.
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * Version: @(#)raw.h 1.0.2 05/07/93
10*4882a593Smuzhiyun *
11*4882a593Smuzhiyun * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
12*4882a593Smuzhiyun */
13*4882a593Smuzhiyun #ifndef _RAW_H
14*4882a593Smuzhiyun #define _RAW_H
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #include <net/inet_sock.h>
17*4882a593Smuzhiyun #include <net/protocol.h>
18*4882a593Smuzhiyun #include <linux/icmp.h>
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun extern struct proto raw_prot;
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun extern struct raw_hashinfo raw_v4_hashinfo;
23*4882a593Smuzhiyun struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
24*4882a593Smuzhiyun unsigned short num, __be32 raddr,
25*4882a593Smuzhiyun __be32 laddr, int dif, int sdif);
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun int raw_abort(struct sock *sk, int err);
28*4882a593Smuzhiyun void raw_icmp_error(struct sk_buff *, int, u32);
29*4882a593Smuzhiyun int raw_local_deliver(struct sk_buff *, int);
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun int raw_rcv(struct sock *, struct sk_buff *);
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun #define RAW_HTABLE_SIZE MAX_INET_PROTOS
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun struct raw_hashinfo {
36*4882a593Smuzhiyun rwlock_t lock;
37*4882a593Smuzhiyun struct hlist_head ht[RAW_HTABLE_SIZE];
38*4882a593Smuzhiyun };
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun #ifdef CONFIG_PROC_FS
41*4882a593Smuzhiyun int raw_proc_init(void);
42*4882a593Smuzhiyun void raw_proc_exit(void);
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun struct raw_iter_state {
45*4882a593Smuzhiyun struct seq_net_private p;
46*4882a593Smuzhiyun int bucket;
47*4882a593Smuzhiyun };
48*4882a593Smuzhiyun
raw_seq_private(struct seq_file * seq)49*4882a593Smuzhiyun static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun return seq->private;
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun void *raw_seq_start(struct seq_file *seq, loff_t *pos);
54*4882a593Smuzhiyun void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos);
55*4882a593Smuzhiyun void raw_seq_stop(struct seq_file *seq, void *v);
56*4882a593Smuzhiyun #endif
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun int raw_hash_sk(struct sock *sk);
59*4882a593Smuzhiyun void raw_unhash_sk(struct sock *sk);
60*4882a593Smuzhiyun void raw_init(void);
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun struct raw_sock {
63*4882a593Smuzhiyun /* inet_sock has to be the first member */
64*4882a593Smuzhiyun struct inet_sock inet;
65*4882a593Smuzhiyun struct icmp_filter filter;
66*4882a593Smuzhiyun u32 ipmr_table;
67*4882a593Smuzhiyun };
68*4882a593Smuzhiyun
raw_sk(const struct sock * sk)69*4882a593Smuzhiyun static inline struct raw_sock *raw_sk(const struct sock *sk)
70*4882a593Smuzhiyun {
71*4882a593Smuzhiyun return (struct raw_sock *)sk;
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun
raw_sk_bound_dev_eq(struct net * net,int bound_dev_if,int dif,int sdif)74*4882a593Smuzhiyun static inline bool raw_sk_bound_dev_eq(struct net *net, int bound_dev_if,
75*4882a593Smuzhiyun int dif, int sdif)
76*4882a593Smuzhiyun {
77*4882a593Smuzhiyun #if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
78*4882a593Smuzhiyun return inet_bound_dev_eq(READ_ONCE(net->ipv4.sysctl_raw_l3mdev_accept),
79*4882a593Smuzhiyun bound_dev_if, dif, sdif);
80*4882a593Smuzhiyun #else
81*4882a593Smuzhiyun return inet_bound_dev_eq(true, bound_dev_if, dif, sdif);
82*4882a593Smuzhiyun #endif
83*4882a593Smuzhiyun }
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun #endif /* _RAW_H */
86