LXR linux/include/linux/mroute6.h

   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
  15static inline int ip6_mroute_opt(int opt)
  16{
  17        return (opt >= MRT6_BASE) && (opt <= MRT6_MAX);
  18}
  19#else
  20static inline int ip6_mroute_opt(int opt)
  21{
  22        return 0;
  23}
  24#endif
  25
  26struct sock;
  27
  28#ifdef CONFIG_IPV6_MROUTE
  29extern int ip6_mroute_setsockopt(struct sock *, int, sockptr_t, unsigned int);
  30extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
  31extern int ip6_mr_input(struct sk_buff *skb);
  32extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg);
  33extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
  34extern int ip6_mr_init(void);
  35extern void ip6_mr_cleanup(void);
  36#else
  37static inline int ip6_mroute_setsockopt(struct sock *sock, int optname,
  38                sockptr_t optval, unsigned int optlen)
  39{
  40        return -ENOPROTOOPT;
  41}
  42
  43static inline
  44int ip6_mroute_getsockopt(struct sock *sock,
  45                          int optname, char __user *optval, int __user *optlen)
  46{
  47        return -ENOPROTOOPT;
  48}
  49
  50static inline
  51int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg)
  52{
  53        return -ENOIOCTLCMD;
  54}
  55
  56static inline int ip6_mr_init(void)
  57{
  58        return 0;
  59}
  60
  61static inline void ip6_mr_cleanup(void)
  62{
  63        return;
  64}
  65#endif
  66
  67#ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
  68bool ip6mr_rule_default(const struct fib_rule *rule);
  69#else
  70static inline bool ip6mr_rule_default(const struct fib_rule *rule)
  71{
  72        return true;
  73}
  74#endif
  75
  76#define VIFF_STATIC 0x8000
  77
  78struct mfc6_cache_cmp_arg {
  79        struct in6_addr mf6c_mcastgrp;
  80        struct in6_addr mf6c_origin;
  81};
  82
  83struct 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
  96struct rtmsg;
  97extern int ip6mr_get_route(struct net *net, struct sk_buff *skb,
  98                           struct rtmsg *rtm, u32 portid);
  99
 100#ifdef CONFIG_IPV6_MROUTE
 101bool mroute6_is_socket(struct net *net, struct sk_buff *skb);
 102extern int ip6mr_sk_done(struct sock *sk);
 103#else
 104static inline bool mroute6_is_socket(struct net *net, struct sk_buff *skb)
 105{
 106        return false;
 107}
 108static inline int ip6mr_sk_done(struct sock *sk)
 109{
 110        return 0;
 111}
 112#endif
 113#endif
 114