1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_MROUTE_H
3 #define __LINUX_MROUTE_H
4
5 #include <linux/in.h>
6 #include <linux/pim.h>
7 #include <net/fib_rules.h>
8 #include <net/fib_notifier.h>
9 #include <uapi/linux/mroute.h>
10 #include <linux/mroute_base.h>
11 #include <linux/sockptr.h>
12
13 #ifdef CONFIG_IP_MROUTE
14 static inline int ip_mroute_opt(int opt)
15 {
16 return opt >= MRT_BASE && opt <= MRT_MAX;
17 }
18
19 int ip_mroute_setsockopt(struct sock *, int, sockptr_t, unsigned int);
20 int ip_mroute_getsockopt(struct sock *, int, sockptr_t, sockptr_t);
21 int ipmr_ioctl(struct sock *sk, int cmd, void *arg);
22 int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
23 int ip_mr_init(void);
24 bool ipmr_rule_default(const struct fib_rule *rule);
25 int ipmr_sk_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
26 #else
27 static inline int ip_mroute_setsockopt(struct sock *sock, int optname,
28 sockptr_t optval, unsigned int optlen)
29 {
30 return -ENOPROTOOPT;
31 }
32
33 static inline int ip_mroute_getsockopt(struct sock *sk, int optname,
34 sockptr_t optval, sockptr_t optlen)
35 {
36 return -ENOPROTOOPT;
37 }
38
39 static inline int ipmr_ioctl(struct sock *sk, int cmd, void *arg)
40 {
41 return -ENOIOCTLCMD;
42 }
43
44 static inline int ip_mr_init(void)
45 {
46 return 0;
47 }
48
49 static inline int ip_mroute_opt(int opt)
50 {
51 return 0;
52 }
53
54 static inline bool ipmr_rule_default(const struct fib_rule *rule)
55 {
56 return true;
57 }
58
59 static inline int ipmr_sk_ioctl(struct sock *sk, unsigned int cmd,
60 void __user *arg)
61 {
62 return 1;
63 }
64 #endif
65
66 #define VIFF_STATIC 0x8000
67
68 struct mfc_cache_cmp_arg {
69 __be32 mfc_mcastgrp;
70 __be32 mfc_origin;
71 };
72
73 /**
74 * struct mfc_cache - multicast routing entries
75 * @_c: Common multicast routing information; has to be first [for casting]
76 * @mfc_mcastgrp: destination multicast group address
77 * @mfc_origin: source address
78 * @cmparg: used for rhashtable comparisons
79 */
80 struct mfc_cache {
81 struct mr_mfc _c;
82 union {
83 struct {
84 __be32 mfc_mcastgrp;
85 __be32 mfc_origin;
86 };
87 struct mfc_cache_cmp_arg cmparg;
88 };
89 };
90
91 struct rtmsg;
92 int ipmr_get_route(struct net *net, struct sk_buff *skb,
93 __be32 saddr, __be32 daddr,
94 struct rtmsg *rtm, u32 portid);
95 #endif
96
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