Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 int ip6_mr_output(struct net *net, struct sock *sk, struct sk_buff *skb);
35extern void ip6_mr_cleanup(void);
36int ip6mr_ioctl(struct sock *sk, int cmd, void *arg);
37#else
38static inline int ip6_mroute_setsockopt(struct sock *sock, int optname,
39 sockptr_t optval, unsigned int optlen)
40{
41 return -ENOPROTOOPT;
42}
43
44static inline
45int ip6_mroute_getsockopt(struct sock *sock,
46 int optname, sockptr_t optval, sockptr_t optlen)
47{
48 return -ENOPROTOOPT;
49}
50
51static inline
52int ip6mr_ioctl(struct sock *sk, int cmd, void *arg)
53{
54 return -ENOIOCTLCMD;
55}
56
57static inline int ip6_mr_init(void)
58{
59 return 0;
60}
61
62static inline int
63ip6_mr_output(struct net *net, struct sock *sk, struct sk_buff *skb)
64{
65 return ip6_output(net, sk, skb);
66}
67
68static inline void ip6_mr_cleanup(void)
69{
70 return;
71}
72#endif
73
74#ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
75bool ip6mr_rule_default(const struct fib_rule *rule);
76#else
77static inline bool ip6mr_rule_default(const struct fib_rule *rule)
78{
79 return true;
80}
81#endif
82
83#define VIFF_STATIC 0x8000
84
85struct mfc6_cache_cmp_arg {
86 struct in6_addr mf6c_mcastgrp;
87 struct in6_addr mf6c_origin;
88};
89
90struct mfc6_cache {
91 struct mr_mfc _c;
92 union {
93 struct {
94 struct in6_addr mf6c_mcastgrp;
95 struct in6_addr mf6c_origin;
96 };
97 struct mfc6_cache_cmp_arg cmparg;
98 };
99};
100
101#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
102
103struct rtmsg;
104extern int ip6mr_get_route(struct net *net, struct sk_buff *skb,
105 struct rtmsg *rtm, u32 portid);
106
107#ifdef CONFIG_IPV6_MROUTE
108bool mroute6_is_socket(struct net *net, struct sk_buff *skb);
109extern int ip6mr_sk_done(struct sock *sk);
110static inline int ip6mr_sk_ioctl(struct sock *sk, unsigned int cmd,
111 void __user *arg)
112{
113 switch (cmd) {
114 /* These userspace buffers will be consumed by ip6mr_ioctl() */
115 case SIOCGETMIFCNT_IN6: {
116 struct sioc_mif_req6 buffer;
117
118 return sock_ioctl_inout(sk, cmd, arg, &buffer,
119 sizeof(buffer));
120 }
121 case SIOCGETSGCNT_IN6: {
122 struct sioc_sg_req6 buffer;
123
124 return sock_ioctl_inout(sk, cmd, arg, &buffer,
125 sizeof(buffer));
126 }
127 }
128
129 return 1;
130}
131#else
132static inline bool mroute6_is_socket(struct net *net, struct sk_buff *skb)
133{
134 return false;
135}
136static inline int ip6mr_sk_done(struct sock *sk)
137{
138 return 0;
139}
140
141static inline int ip6mr_sk_ioctl(struct sock *sk, unsigned int cmd,
142 void __user *arg)
143{
144 return 1;
145}
146#endif
147#endif