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 <net/netns/hash.h>
19#include <linux/hash.h>
20#include <linux/icmp.h>
21
22extern struct proto raw_prot;
23
24extern struct raw_hashinfo raw_v4_hashinfo;
25bool raw_v4_match(struct net *net, const struct sock *sk, unsigned short num,
26		  __be32 raddr, __be32 laddr, int dif, int sdif);
27
28int raw_abort(struct sock *sk, int err);
29void raw_icmp_error(struct sk_buff *, int, u32);
30int raw_local_deliver(struct sk_buff *, int);
31
32int raw_rcv(struct sock *, struct sk_buff *);
33
34#define RAW_HTABLE_LOG	8
35#define RAW_HTABLE_SIZE	(1U << RAW_HTABLE_LOG)
36
37struct raw_hashinfo {
38	spinlock_t lock;
39
40	struct hlist_head ht[RAW_HTABLE_SIZE] ____cacheline_aligned;
41};
42
43static inline u32 raw_hashfunc(const struct net *net, u32 proto)
44{
45	return hash_32(net_hash_mix(net) ^ proto, RAW_HTABLE_LOG);
46}
47
48static inline void raw_hashinfo_init(struct raw_hashinfo *hashinfo)
49{
50	int i;
51
52	spin_lock_init(&hashinfo->lock);
53	for (i = 0; i < RAW_HTABLE_SIZE; i++)
54		INIT_HLIST_HEAD(&hashinfo->ht[i]);
55}
56
57#ifdef CONFIG_PROC_FS
58int raw_proc_init(void);
59void raw_proc_exit(void);
60
61struct raw_iter_state {
62	struct seq_net_private p;
63	int bucket;
64};
65
66static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
67{
68	return seq->private;
69}
70void *raw_seq_start(struct seq_file *seq, loff_t *pos);
71void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos);
72void raw_seq_stop(struct seq_file *seq, void *v);
73#endif
74
75int raw_hash_sk(struct sock *sk);
76void raw_unhash_sk(struct sock *sk);
77void raw_init(void);
78
79struct raw_sock {
80	/* inet_sock has to be the first member */
81	struct inet_sock   inet;
82	struct icmp_filter filter;
83	u32		   ipmr_table;
84};
85
86#define raw_sk(ptr) container_of_const(ptr, struct raw_sock, inet.sk)
 
 
 
87
88static inline bool raw_sk_bound_dev_eq(struct net *net, int bound_dev_if,
89				       int dif, int sdif)
90{
91#if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
92	return inet_bound_dev_eq(READ_ONCE(net->ipv4.sysctl_raw_l3mdev_accept),
93				 bound_dev_if, dif, sdif);
94#else
95	return inet_bound_dev_eq(true, bound_dev_if, dif, sdif);
96#endif
97}
98
99#endif	/* _RAW_H */

 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
20extern struct proto raw_prot;
21
22extern struct raw_hashinfo raw_v4_hashinfo;
23bool raw_v4_match(struct net *net, struct sock *sk, unsigned short num,
24		  __be32 raddr, __be32 laddr, int dif, int sdif);
25
26int raw_abort(struct sock *sk, int err);
27void raw_icmp_error(struct sk_buff *, int, u32);
28int raw_local_deliver(struct sk_buff *, int);
29
30int raw_rcv(struct sock *, struct sk_buff *);
31
32#define RAW_HTABLE_SIZE	MAX_INET_PROTOS
 
33
34struct raw_hashinfo {
35	spinlock_t lock;
36	struct hlist_nulls_head ht[RAW_HTABLE_SIZE];
 
37};
38
 
 
 
 
 
39static 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
49int raw_proc_init(void);
50void raw_proc_exit(void);
51
52struct raw_iter_state {
53	struct seq_net_private p;
54	int bucket;
55};
56
57static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
58{
59	return seq->private;
60}
61void *raw_seq_start(struct seq_file *seq, loff_t *pos);
62void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos);
63void raw_seq_stop(struct seq_file *seq, void *v);
64#endif
65
66int raw_hash_sk(struct sock *sk);
67void raw_unhash_sk(struct sock *sk);
68void raw_init(void);
69
70struct 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
77static inline struct raw_sock *raw_sk(const struct sock *sk)
78{
79	return (struct raw_sock *)sk;
80}
81
82static 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 */