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, sockptr_t, sockptr_t); 31extern int ip6_mr_input(struct sk_buff *skb); 32extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg); 33extern int ip6_mr_init(void); 34extern void ip6_mr_cleanup(void); 35int ip6mr_ioctl(struct sock *sk, int cmd, void *arg); 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, sockptr_t optval, sockptr_t optlen) 46{ 47 return -ENOPROTOOPT; 48} 49 50static inline 51int ip6mr_ioctl(struct sock *sk, int cmd, void *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); 103static inline int ip6mr_sk_ioctl(struct sock *sk, unsigned int cmd, 104 void __user *arg) 105{ 106 switch (cmd) { 107 /* These userspace buffers will be consumed by ip6mr_ioctl() */ 108 case SIOCGETMIFCNT_IN6: { 109 struct sioc_mif_req6 buffer; 110 111 return sock_ioctl_inout(sk, cmd, arg, &buffer, 112 sizeof(buffer)); 113 } 114 case SIOCGETSGCNT_IN6: { 115 struct sioc_sg_req6 buffer; 116 117 return sock_ioctl_inout(sk, cmd, arg, &buffer, 118 sizeof(buffer)); 119 } 120 } 121 122 return 1; 123} 124#else 125static inline bool mroute6_is_socket(struct net *net, struct sk_buff *skb) 126{ 127 return false; 128} 129static inline int ip6mr_sk_done(struct sock *sk) 130{ 131 return 0; 132} 133 134static inline int ip6mr_sk_ioctl(struct sock *sk, unsigned int cmd, 135 void __user *arg) 136{ 137 return 1; 138} 139#endif 140#endif 141