141 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __LINUX_MROUTE6_H3#define __LINUX_MROUTE6_H4 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_MROUTE15static inline int ip6_mroute_opt(int opt)16{17 return (opt >= MRT6_BASE) && (opt <= MRT6_MAX);18}19#else20static inline int ip6_mroute_opt(int opt)21{22 return 0;23}24#endif25 26struct sock;27 28#ifdef CONFIG_IPV6_MROUTE29extern 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#else37static inline int ip6_mroute_setsockopt(struct sock *sock, int optname,38 sockptr_t optval, unsigned int optlen)39{40 return -ENOPROTOOPT;41}42 43static inline44int ip6_mroute_getsockopt(struct sock *sock,45 int optname, sockptr_t optval, sockptr_t optlen)46{47 return -ENOPROTOOPT;48}49 50static inline51int 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#endif66 67#ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES68bool ip6mr_rule_default(const struct fib_rule *rule);69#else70static inline bool ip6mr_rule_default(const struct fib_rule *rule)71{72 return true;73}74#endif75 76#define VIFF_STATIC 0x800077 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_MROUTE101bool 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#else125static 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#endif140#endif141