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