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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 | ||
11 | #ifdef CONFIG_IPV6_MROUTE | |
12 | static inline int ip6_mroute_opt(int opt) | |
13 | { | |
14 | return (opt >= MRT6_BASE) && (opt <= MRT6_MAX); | |
15 | } | |
16 | #else | |
17 | static inline int ip6_mroute_opt(int opt) | |
18 | { | |
19 | return 0; | |
20 | } | |
21 | #endif | |
22 | ||
23 | struct sock; | |
24 | ||
25 | #ifdef CONFIG_IPV6_MROUTE | |
26 | extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); | |
27 | extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *); | |
28 | extern int ip6_mr_input(struct sk_buff *skb); | |
29 | extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg); | |
30 | extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg); | |
31 | extern int ip6_mr_init(void); | |
32 | extern void ip6_mr_cleanup(void); | |
33 | #else | |
34 | static inline | |
35 | int ip6_mroute_setsockopt(struct sock *sock, | |
36 | int optname, char __user *optval, unsigned int optlen) | |
37 | { | |
38 | return -ENOPROTOOPT; | |
39 | } | |
40 | ||
41 | static inline | |
42 | int ip6_mroute_getsockopt(struct sock *sock, | |
43 | int optname, char __user *optval, int __user *optlen) | |
44 | { | |
45 | return -ENOPROTOOPT; | |
46 | } | |
47 | ||
48 | static inline | |
49 | int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg) | |
50 | { | |
51 | return -ENOIOCTLCMD; | |
52 | } | |
53 | ||
54 | static inline int ip6_mr_init(void) | |
55 | { | |
56 | return 0; | |
57 | } | |
58 | ||
59 | static inline void ip6_mr_cleanup(void) | |
60 | { | |
61 | return; | |
62 | } | |
63 | #endif | |
64 | ||
65 | struct mif_device { | |
66 | struct net_device *dev; /* Device we are using */ | |
67 | unsigned long bytes_in,bytes_out; | |
68 | unsigned long pkt_in,pkt_out; /* Statistics */ | |
69 | unsigned long rate_limit; /* Traffic shaping (NI) */ | |
70 | unsigned char threshold; /* TTL threshold */ | |
71 | unsigned short flags; /* Control flags */ | |
72 | int link; /* Physical interface index */ | |
73 | }; | |
74 | ||
75 | #define VIFF_STATIC 0x8000 | |
76 | ||
77 | struct mfc6_cache { | |
78 | struct list_head list; | |
79 | struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */ | |
80 | struct in6_addr mf6c_origin; /* Source of packet */ | |
81 | mifi_t mf6c_parent; /* Source interface */ | |
82 | int mfc_flags; /* Flags on line */ | |
83 | ||
84 | union { | |
85 | struct { | |
86 | unsigned long expires; | |
87 | struct sk_buff_head unresolved; /* Unresolved buffers */ | |
88 | } unres; | |
89 | struct { | |
90 | unsigned long last_assert; | |
91 | int minvif; | |
92 | int maxvif; | |
93 | unsigned long bytes; | |
94 | unsigned long pkt; | |
95 | unsigned long wrong_if; | |
96 | unsigned long lastuse; | |
97 | unsigned char ttls[MAXMIFS]; /* TTL thresholds */ | |
98 | } res; | |
99 | } mfc_un; | |
100 | }; | |
101 | ||
102 | #define MFC_STATIC 1 | |
103 | #define MFC_NOTIFY 2 | |
104 | ||
105 | #define MFC6_LINES 64 | |
106 | ||
107 | #define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \ | |
108 | (__force u32)(a)->s6_addr32[1] ^ \ | |
109 | (__force u32)(a)->s6_addr32[2] ^ \ | |
110 | (__force u32)(a)->s6_addr32[3] ^ \ | |
111 | (__force u32)(g)->s6_addr32[0] ^ \ | |
112 | (__force u32)(g)->s6_addr32[1] ^ \ | |
113 | (__force u32)(g)->s6_addr32[2] ^ \ | |
114 | (__force u32)(g)->s6_addr32[3]) % MFC6_LINES) | |
115 | ||
116 | #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ | |
117 | ||
118 | struct rtmsg; | |
119 | extern int ip6mr_get_route(struct net *net, struct sk_buff *skb, | |
120 | struct rtmsg *rtm, u32 portid); | |
121 | ||
122 | #ifdef CONFIG_IPV6_MROUTE | |
123 | extern struct sock *mroute6_socket(struct net *net, struct sk_buff *skb); | |
124 | extern int ip6mr_sk_done(struct sock *sk); | |
125 | #else | |
126 | static inline struct sock *mroute6_socket(struct net *net, struct sk_buff *skb) | |
127 | { | |
128 | return NULL; | |
129 | } | |
130 | static inline int ip6mr_sk_done(struct sock *sk) | |
131 | { | |
132 | return 0; | |
133 | } | |
134 | #endif | |
135 | #endif |