include/linux/mroute6.h

   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_MAX);
  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