include/linux/mroute.h

   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