| 1 | /* SPDX-License-Identifier: GPL-2.0 */ | 
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| 2 | #ifndef __LINUX_MROUTE6_H | 
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| 3 | #define __LINUX_MROUTE6_H | 
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| 4 |  | 
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| 5 |  | 
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| 6 | #include <linux/pim.h> | 
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| 7 | #include <linux/skbuff.h>	/* for struct sk_buff_head */ | 
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| 8 | #include <net/net_namespace.h> | 
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| 9 | #include <uapi/linux/mroute6.h> | 
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| 10 | #include <linux/mroute_base.h> | 
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| 11 | #include <linux/sockptr.h> | 
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| 12 | #include <net/fib_rules.h> | 
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| 13 |  | 
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| 14 | #ifdef CONFIG_IPV6_MROUTE | 
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| 15 | static inline int ip6_mroute_opt(int opt) | 
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| 16 | { | 
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| 17 | return (opt >= MRT6_BASE) && (opt <= MRT6_MAX); | 
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| 18 | } | 
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| 19 | #else | 
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| 20 | static inline int ip6_mroute_opt(int opt) | 
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| 21 | { | 
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| 22 | return 0; | 
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| 23 | } | 
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| 24 | #endif | 
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| 25 |  | 
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| 26 | struct sock; | 
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| 27 |  | 
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| 28 | #ifdef CONFIG_IPV6_MROUTE | 
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| 29 | extern int ip6_mroute_setsockopt(struct sock *, int, sockptr_t, unsigned int); | 
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| 30 | extern int ip6_mroute_getsockopt(struct sock *, int, sockptr_t, sockptr_t); | 
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| 31 | extern int ip6_mr_input(struct sk_buff *skb); | 
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| 32 | extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg); | 
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| 33 | extern int ip6_mr_init(void); | 
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| 34 | extern int ip6_mr_output(struct net *net, struct sock *sk, struct sk_buff *skb); | 
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| 35 | extern void ip6_mr_cleanup(void); | 
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| 36 | int ip6mr_ioctl(struct sock *sk, int cmd, void *arg); | 
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| 37 | #else | 
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| 38 | static inline int ip6_mroute_setsockopt(struct sock *sock, int optname, | 
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| 39 | sockptr_t optval, unsigned int optlen) | 
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| 40 | { | 
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| 41 | return -ENOPROTOOPT; | 
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| 42 | } | 
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| 43 |  | 
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| 44 | static inline | 
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| 45 | int ip6_mroute_getsockopt(struct sock *sock, | 
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| 46 | int optname, sockptr_t optval, sockptr_t optlen) | 
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| 47 | { | 
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| 48 | return -ENOPROTOOPT; | 
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| 49 | } | 
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| 50 |  | 
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| 51 | static inline | 
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| 52 | int ip6mr_ioctl(struct sock *sk, int cmd, void *arg) | 
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| 53 | { | 
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| 54 | return -ENOIOCTLCMD; | 
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| 55 | } | 
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| 56 |  | 
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| 57 | static inline int ip6_mr_init(void) | 
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| 58 | { | 
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| 59 | return 0; | 
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| 60 | } | 
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| 61 |  | 
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| 62 | static inline int | 
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| 63 | ip6_mr_output(struct net *net, struct sock *sk, struct sk_buff *skb) | 
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| 64 | { | 
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| 65 | return ip6_output(net, sk, skb); | 
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| 66 | } | 
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| 67 |  | 
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| 68 | static inline void ip6_mr_cleanup(void) | 
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| 69 | { | 
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| 70 | return; | 
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| 71 | } | 
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| 72 | #endif | 
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| 73 |  | 
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| 74 | #ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES | 
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| 75 | bool ip6mr_rule_default(const struct fib_rule *rule); | 
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| 76 | #else | 
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| 77 | static inline bool ip6mr_rule_default(const struct fib_rule *rule) | 
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| 78 | { | 
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| 79 | return true; | 
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| 80 | } | 
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| 81 | #endif | 
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| 82 |  | 
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| 83 | #define VIFF_STATIC 0x8000 | 
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| 84 |  | 
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| 85 | struct mfc6_cache_cmp_arg { | 
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| 86 | struct in6_addr mf6c_mcastgrp; | 
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| 87 | struct in6_addr mf6c_origin; | 
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| 88 | }; | 
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| 89 |  | 
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| 90 | struct mfc6_cache { | 
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| 91 | struct mr_mfc _c; | 
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| 92 | union { | 
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| 93 | struct { | 
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| 94 | struct in6_addr mf6c_mcastgrp; | 
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| 95 | struct in6_addr mf6c_origin; | 
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| 96 | }; | 
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| 97 | struct mfc6_cache_cmp_arg cmparg; | 
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| 98 | }; | 
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| 99 | }; | 
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| 100 |  | 
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| 101 | #define MFC_ASSERT_THRESH (3*HZ)		/* Maximal freq. of asserts */ | 
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| 102 |  | 
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| 103 | struct rtmsg; | 
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| 104 | extern int ip6mr_get_route(struct net *net, struct sk_buff *skb, | 
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| 105 | struct rtmsg *rtm, u32 portid); | 
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| 106 |  | 
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| 107 | #ifdef CONFIG_IPV6_MROUTE | 
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| 108 | bool mroute6_is_socket(struct net *net, struct sk_buff *skb); | 
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| 109 | extern int ip6mr_sk_done(struct sock *sk); | 
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| 110 | static inline int ip6mr_sk_ioctl(struct sock *sk, unsigned int cmd, | 
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| 111 | void __user *arg) | 
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| 112 | { | 
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| 113 | switch (cmd) { | 
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| 114 | /* These userspace buffers will be consumed by ip6mr_ioctl() */ | 
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| 115 | case SIOCGETMIFCNT_IN6: { | 
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| 116 | struct sioc_mif_req6 buffer; | 
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| 117 |  | 
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| 118 | return sock_ioctl_inout(sk, cmd, arg, &buffer, | 
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| 119 | sizeof(buffer)); | 
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| 120 | } | 
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| 121 | case SIOCGETSGCNT_IN6: { | 
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| 122 | struct sioc_sg_req6 buffer; | 
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| 123 |  | 
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| 124 | return sock_ioctl_inout(sk, cmd, arg, &buffer, | 
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| 125 | sizeof(buffer)); | 
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| 126 | } | 
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| 127 | } | 
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| 128 |  | 
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| 129 | return 1; | 
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| 130 | } | 
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| 131 | #else | 
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| 132 | static inline bool mroute6_is_socket(struct net *net, struct sk_buff *skb) | 
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| 133 | { | 
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| 134 | return false; | 
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| 135 | } | 
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| 136 | static inline int ip6mr_sk_done(struct sock *sk) | 
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| 137 | { | 
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| 138 | return 0; | 
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| 139 | } | 
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| 140 |  | 
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| 141 | static inline int ip6mr_sk_ioctl(struct sock *sk, unsigned int cmd, | 
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| 142 | void __user *arg) | 
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| 143 | { | 
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| 144 | return 1; | 
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| 145 | } | 
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| 146 | #endif | 
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| 147 | #endif | 
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| 148 |  | 
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