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 
21 #include <net/protocol.h>
22 #include <linux/icmp.h>
23 
24 extern struct proto raw_prot;
25 
26 extern struct raw_hashinfo raw_v4_hashinfo;
27 struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
28 			     unsigned short num, __be32 raddr,
29 			     __be32 laddr, int dif, int sdif);
30 
31 int raw_abort(struct sock *sk, int err);
32 void raw_icmp_error(struct sk_buff *, int, u32);
33 int raw_local_deliver(struct sk_buff *, int);
34 
35 int raw_rcv(struct sock *, struct sk_buff *);
36 
37 #define RAW_HTABLE_SIZE	MAX_INET_PROTOS
38 
39 struct raw_hashinfo {
40 	rwlock_t lock;
41 	struct hlist_head ht[RAW_HTABLE_SIZE];
42 };
43 
44 #ifdef CONFIG_PROC_FS
45 int raw_proc_init(void);
46 void raw_proc_exit(void);
47 
48 struct raw_iter_state {
49 	struct seq_net_private p;
50 	int bucket;
51 };
52 
raw_seq_private(struct seq_file * seq)53 static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
54 {
55 	return seq->private;
56 }
57 void *raw_seq_start(struct seq_file *seq, loff_t *pos);
58 void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos);
59 void raw_seq_stop(struct seq_file *seq, void *v);
60 #endif
61 
62 int raw_hash_sk(struct sock *sk);
63 void raw_unhash_sk(struct sock *sk);
64 
65 struct raw_sock {
66 	/* inet_sock has to be the first member */
67 	struct inet_sock   inet;
68 	struct icmp_filter filter;
69 	u32		   ipmr_table;
70 };
71 
raw_sk(const struct sock * sk)72 static inline struct raw_sock *raw_sk(const struct sock *sk)
73 {
74 	return (struct raw_sock *)sk;
75 }
76 
77 #endif	/* _RAW_H */
78