Linux Kernel  3.7.1
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mroute6.h
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1 #ifndef __LINUX_MROUTE6_H
2 #define __LINUX_MROUTE6_H
3 
4 
5 #include <linux/pim.h>
6 #include <linux/skbuff.h> /* for struct sk_buff_head */
7 #include <net/net_namespace.h>
8 #include <uapi/linux/mroute6.h>
9 
10 #ifdef CONFIG_IPV6_MROUTE
11 static inline int ip6_mroute_opt(int opt)
12 {
13  return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10);
14 }
15 #else
16 static inline int ip6_mroute_opt(int opt)
17 {
18  return 0;
19 }
20 #endif
21 
22 struct sock;
23 
24 #ifdef CONFIG_IPV6_MROUTE
25 extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
26 extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
27 extern int ip6_mr_input(struct sk_buff *skb);
28 extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg);
29 extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
30 extern int ip6_mr_init(void);
31 extern void ip6_mr_cleanup(void);
32 #else
33 static inline
34 int ip6_mroute_setsockopt(struct sock *sock,
35  int optname, char __user *optval, unsigned int optlen)
36 {
37  return -ENOPROTOOPT;
38 }
39 
40 static inline
41 int ip6_mroute_getsockopt(struct sock *sock,
42  int optname, char __user *optval, int __user *optlen)
43 {
44  return -ENOPROTOOPT;
45 }
46 
47 static inline
48 int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg)
49 {
50  return -ENOIOCTLCMD;
51 }
52 
53 static inline int ip6_mr_init(void)
54 {
55  return 0;
56 }
57 
58 static inline void ip6_mr_cleanup(void)
59 {
60  return;
61 }
62 #endif
63 
64 struct mif_device {
65  struct net_device *dev; /* Device we are using */
66  unsigned long bytes_in,bytes_out;
67  unsigned long pkt_in,pkt_out; /* Statistics */
68  unsigned long rate_limit; /* Traffic shaping (NI) */
69  unsigned char threshold; /* TTL threshold */
70  unsigned short flags; /* Control flags */
71  int link; /* Physical interface index */
72 };
73 
74 #define VIFF_STATIC 0x8000
75 
76 struct mfc6_cache {
77  struct list_head list;
78  struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */
79  struct in6_addr mf6c_origin; /* Source of packet */
80  mifi_t mf6c_parent; /* Source interface */
81  int mfc_flags; /* Flags on line */
82 
83  union {
84  struct {
85  unsigned long expires;
86  struct sk_buff_head unresolved; /* Unresolved buffers */
87  } unres;
88  struct {
89  unsigned long last_assert;
90  int minvif;
91  int maxvif;
92  unsigned long bytes;
93  unsigned long pkt;
94  unsigned long wrong_if;
95  unsigned char ttls[MAXMIFS]; /* TTL thresholds */
96  } res;
97  } mfc_un;
98 };
99 
100 #define MFC_STATIC 1
101 #define MFC_NOTIFY 2
102 
103 #define MFC6_LINES 64
104 
105 #define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \
106  (__force u32)(a)->s6_addr32[1] ^ \
107  (__force u32)(a)->s6_addr32[2] ^ \
108  (__force u32)(a)->s6_addr32[3] ^ \
109  (__force u32)(g)->s6_addr32[0] ^ \
110  (__force u32)(g)->s6_addr32[1] ^ \
111  (__force u32)(g)->s6_addr32[2] ^ \
112  (__force u32)(g)->s6_addr32[3]) % MFC6_LINES)
113 
114 #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
115 
116 struct rtmsg;
117 extern int ip6mr_get_route(struct net *net, struct sk_buff *skb,
118  struct rtmsg *rtm, int nowait);
119 
120 #ifdef CONFIG_IPV6_MROUTE
121 extern struct sock *mroute6_socket(struct net *net, struct sk_buff *skb);
122 extern int ip6mr_sk_done(struct sock *sk);
123 #else
124 static inline struct sock *mroute6_socket(struct net *net, struct sk_buff *skb)
125 {
126  return NULL;
127 }
128 static inline int ip6mr_sk_done(struct sock *sk)
129 {
130  return 0;
131 }
132 #endif
133 #endif