1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __LINUX_MROUTE6_H
3#define __LINUX_MROUTE6_H
4
5
6#include <linux/pim.h>
7#include <linux/skbuff.h> /* for struct sk_buff_head */
8#include <net/net_namespace.h>
9#include <uapi/linux/mroute6.h>
10#include <linux/mroute_base.h>
11#include <linux/sockptr.h>
12#include <net/fib_rules.h>
13
14#ifdef CONFIG_IPV6_MROUTE
15static inline int ip6_mroute_opt(int opt)
16{
17 return (opt >= MRT6_BASE) && (opt <= MRT6_MAX);
18}
19#else
20static inline int ip6_mroute_opt(int opt)
21{
22 return 0;
23}
24#endif
25
26struct sock;
27
28#ifdef CONFIG_IPV6_MROUTE
29extern int ip6_mroute_setsockopt(struct sock *, int, sockptr_t, unsigned int);
30extern int ip6_mroute_getsockopt(struct sock *, int, sockptr_t, sockptr_t);
31extern int ip6_mr_input(struct sk_buff *skb);
32extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
33extern int ip6_mr_init(void);
34extern void ip6_mr_cleanup(void);
35int ip6mr_ioctl(struct sock *sk, int cmd, void *arg);
36#else
37static inline int ip6_mroute_setsockopt(struct sock *sock, int optname,
38 sockptr_t optval, unsigned int optlen)
39{
40 return -ENOPROTOOPT;
41}
42
43static inline
44int ip6_mroute_getsockopt(struct sock *sock,
45 int optname, sockptr_t optval, sockptr_t optlen)
46{
47 return -ENOPROTOOPT;
48}
49
50static inline
51int ip6mr_ioctl(struct sock *sk, int cmd, void *arg)
52{
53 return -ENOIOCTLCMD;
54}
55
56static inline int ip6_mr_init(void)
57{
58 return 0;
59}
60
61static inline void ip6_mr_cleanup(void)
62{
63 return;
64}
65#endif
66
67#ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
68bool ip6mr_rule_default(const struct fib_rule *rule);
69#else
70static inline bool ip6mr_rule_default(const struct fib_rule *rule)
71{
72 return true;
73}
74#endif
75
76#define VIFF_STATIC 0x8000
77
78struct mfc6_cache_cmp_arg {
79 struct in6_addr mf6c_mcastgrp;
80 struct in6_addr mf6c_origin;
81};
82
83struct mfc6_cache {
84 struct mr_mfc _c;
85 union {
86 struct {
87 struct in6_addr mf6c_mcastgrp;
88 struct in6_addr mf6c_origin;
89 };
90 struct mfc6_cache_cmp_arg cmparg;
91 };
92};
93
94#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
95
96struct rtmsg;
97extern int ip6mr_get_route(struct net *net, struct sk_buff *skb,
98 struct rtmsg *rtm, u32 portid);
99
100#ifdef CONFIG_IPV6_MROUTE
101bool mroute6_is_socket(struct net *net, struct sk_buff *skb);
102extern int ip6mr_sk_done(struct sock *sk);
103static inline int ip6mr_sk_ioctl(struct sock *sk, unsigned int cmd,
104 void __user *arg)
105{
106 switch (cmd) {
107 /* These userspace buffers will be consumed by ip6mr_ioctl() */
108 case SIOCGETMIFCNT_IN6: {
109 struct sioc_mif_req6 buffer;
110
111 return sock_ioctl_inout(sk, cmd, arg, karg: &buffer,
112 size: sizeof(buffer));
113 }
114 case SIOCGETSGCNT_IN6: {
115 struct sioc_sg_req6 buffer;
116
117 return sock_ioctl_inout(sk, cmd, arg, karg: &buffer,
118 size: sizeof(buffer));
119 }
120 }
121
122 return 1;
123}
124#else
125static inline bool mroute6_is_socket(struct net *net, struct sk_buff *skb)
126{
127 return false;
128}
129static inline int ip6mr_sk_done(struct sock *sk)
130{
131 return 0;
132}
133
134static inline int ip6mr_sk_ioctl(struct sock *sk, unsigned int cmd,
135 void __user *arg)
136{
137 return 1;
138}
139#endif
140#endif
141

source code of linux/include/linux/mroute6.h

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