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 |
15 | static inline int ip6_mroute_opt(int opt) |
16 | { |
17 | return (opt >= MRT6_BASE) && (opt <= MRT6_MAX); |
18 | } |
19 | #else |
20 | static inline int ip6_mroute_opt(int opt) |
21 | { |
22 | return 0; |
23 | } |
24 | #endif |
25 | |
26 | struct sock; |
27 | |
28 | #ifdef CONFIG_IPV6_MROUTE |
29 | extern int ip6_mroute_setsockopt(struct sock *, int, sockptr_t, unsigned int); |
30 | extern int ip6_mroute_getsockopt(struct sock *, int, sockptr_t, sockptr_t); |
31 | extern int ip6_mr_input(struct sk_buff *skb); |
32 | extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg); |
33 | extern int ip6_mr_init(void); |
34 | extern void ip6_mr_cleanup(void); |
35 | int ip6mr_ioctl(struct sock *sk, int cmd, void *arg); |
36 | #else |
37 | static inline int ip6_mroute_setsockopt(struct sock *sock, int optname, |
38 | sockptr_t optval, unsigned int optlen) |
39 | { |
40 | return -ENOPROTOOPT; |
41 | } |
42 | |
43 | static inline |
44 | int ip6_mroute_getsockopt(struct sock *sock, |
45 | int optname, sockptr_t optval, sockptr_t optlen) |
46 | { |
47 | return -ENOPROTOOPT; |
48 | } |
49 | |
50 | static inline |
51 | int ip6mr_ioctl(struct sock *sk, int cmd, void *arg) |
52 | { |
53 | return -ENOIOCTLCMD; |
54 | } |
55 | |
56 | static inline int ip6_mr_init(void) |
57 | { |
58 | return 0; |
59 | } |
60 | |
61 | static inline void ip6_mr_cleanup(void) |
62 | { |
63 | return; |
64 | } |
65 | #endif |
66 | |
67 | #ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES |
68 | bool ip6mr_rule_default(const struct fib_rule *rule); |
69 | #else |
70 | static inline bool ip6mr_rule_default(const struct fib_rule *rule) |
71 | { |
72 | return true; |
73 | } |
74 | #endif |
75 | |
76 | #define VIFF_STATIC 0x8000 |
77 | |
78 | struct mfc6_cache_cmp_arg { |
79 | struct in6_addr mf6c_mcastgrp; |
80 | struct in6_addr mf6c_origin; |
81 | }; |
82 | |
83 | struct 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 | |
96 | struct rtmsg; |
97 | extern int ip6mr_get_route(struct net *net, struct sk_buff *skb, |
98 | struct rtmsg *rtm, u32 portid); |
99 | |
100 | #ifdef CONFIG_IPV6_MROUTE |
101 | bool mroute6_is_socket(struct net *net, struct sk_buff *skb); |
102 | extern int ip6mr_sk_done(struct sock *sk); |
103 | static 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 |
125 | static inline bool mroute6_is_socket(struct net *net, struct sk_buff *skb) |
126 | { |
127 | return false; |
128 | } |
129 | static inline int ip6mr_sk_done(struct sock *sk) |
130 | { |
131 | return 0; |
132 | } |
133 | |
134 | static 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 | |