Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
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
11#ifdef CONFIG_IPV6_MROUTE
12static inline int ip6_mroute_opt(int opt)
13{
14 return (opt >= MRT6_BASE) && (opt <= MRT6_MAX);
15}
16#else
17static inline int ip6_mroute_opt(int opt)
18{
19 return 0;
20}
21#endif
22
23struct sock;
24
25#ifdef CONFIG_IPV6_MROUTE
26extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
27extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
28extern int ip6_mr_input(struct sk_buff *skb);
29extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg);
30extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
31extern int ip6_mr_init(void);
32extern void ip6_mr_cleanup(void);
33#else
34static inline
35int ip6_mroute_setsockopt(struct sock *sock,
36 int optname, char __user *optval, unsigned int optlen)
37{
38 return -ENOPROTOOPT;
39}
40
41static inline
42int ip6_mroute_getsockopt(struct sock *sock,
43 int optname, char __user *optval, int __user *optlen)
44{
45 return -ENOPROTOOPT;
46}
47
48static inline
49int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg)
50{
51 return -ENOIOCTLCMD;
52}
53
54static inline int ip6_mr_init(void)
55{
56 return 0;
57}
58
59static inline void ip6_mr_cleanup(void)
60{
61 return;
62}
63#endif
64
65struct mif_device {
66 struct net_device *dev; /* Device we are using */
67 unsigned long bytes_in,bytes_out;
68 unsigned long pkt_in,pkt_out; /* Statistics */
69 unsigned long rate_limit; /* Traffic shaping (NI) */
70 unsigned char threshold; /* TTL threshold */
71 unsigned short flags; /* Control flags */
72 int link; /* Physical interface index */
73};
74
75#define VIFF_STATIC 0x8000
76
77struct mfc6_cache {
78 struct list_head list;
79 struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */
80 struct in6_addr mf6c_origin; /* Source of packet */
81 mifi_t mf6c_parent; /* Source interface */
82 int mfc_flags; /* Flags on line */
83
84 union {
85 struct {
86 unsigned long expires;
87 struct sk_buff_head unresolved; /* Unresolved buffers */
88 } unres;
89 struct {
90 unsigned long last_assert;
91 int minvif;
92 int maxvif;
93 unsigned long bytes;
94 unsigned long pkt;
95 unsigned long wrong_if;
96 unsigned long lastuse;
97 unsigned char ttls[MAXMIFS]; /* TTL thresholds */
98 } res;
99 } mfc_un;
100};
101
102#define MFC_STATIC 1
103#define MFC_NOTIFY 2
104
105#define MFC6_LINES 64
106
107#define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \
108 (__force u32)(a)->s6_addr32[1] ^ \
109 (__force u32)(a)->s6_addr32[2] ^ \
110 (__force u32)(a)->s6_addr32[3] ^ \
111 (__force u32)(g)->s6_addr32[0] ^ \
112 (__force u32)(g)->s6_addr32[1] ^ \
113 (__force u32)(g)->s6_addr32[2] ^ \
114 (__force u32)(g)->s6_addr32[3]) % MFC6_LINES)
115
116#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
117
118struct rtmsg;
119extern int ip6mr_get_route(struct net *net, struct sk_buff *skb,
120 struct rtmsg *rtm, u32 portid);
121
122#ifdef CONFIG_IPV6_MROUTE
123extern struct sock *mroute6_socket(struct net *net, struct sk_buff *skb);
124extern int ip6mr_sk_done(struct sock *sk);
125#else
126static inline struct sock *mroute6_socket(struct net *net, struct sk_buff *skb)
127{
128 return NULL;
129}
130static inline int ip6mr_sk_done(struct sock *sk)
131{
132 return 0;
133}
134#endif
135#endif