Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef __LINUX_MROUTE_H
2#define __LINUX_MROUTE_H
3
4#include <linux/in.h>
5#include <linux/pim.h>
6#include <net/sock.h>
7#include <uapi/linux/mroute.h>
8
9#ifdef CONFIG_IP_MROUTE
10static inline int ip_mroute_opt(int opt)
11{
12 return opt >= MRT_BASE && opt <= MRT_MAX;
13}
14
15int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
16int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
17int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
18int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
19int ip_mr_init(void);
20#else
21static inline int ip_mroute_setsockopt(struct sock *sock, int optname,
22 char __user *optval, unsigned int optlen)
23{
24 return -ENOPROTOOPT;
25}
26
27static inline int ip_mroute_getsockopt(struct sock *sock, int optname,
28 char __user *optval, int __user *optlen)
29{
30 return -ENOPROTOOPT;
31}
32
33static inline int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg)
34{
35 return -ENOIOCTLCMD;
36}
37
38static inline int ip_mr_init(void)
39{
40 return 0;
41}
42
43static inline int ip_mroute_opt(int opt)
44{
45 return 0;
46}
47#endif
48
49struct vif_device {
50 struct net_device *dev; /* Device we are using */
51 unsigned long bytes_in,bytes_out;
52 unsigned long pkt_in,pkt_out; /* Statistics */
53 unsigned long rate_limit; /* Traffic shaping (NI) */
54 unsigned char threshold; /* TTL threshold */
55 unsigned short flags; /* Control flags */
56 __be32 local,remote; /* Addresses(remote for tunnels)*/
57 int link; /* Physical interface index */
58};
59
60#define VIFF_STATIC 0x8000
61
62#define VIF_EXISTS(_mrt, _idx) ((_mrt)->vif_table[_idx].dev != NULL)
63#define MFC_LINES 64
64
65struct mr_table {
66 struct list_head list;
67 possible_net_t net;
68 u32 id;
69 struct sock __rcu *mroute_sk;
70 struct timer_list ipmr_expire_timer;
71 struct list_head mfc_unres_queue;
72 struct list_head mfc_cache_array[MFC_LINES];
73 struct vif_device vif_table[MAXVIFS];
74 int maxvif;
75 atomic_t cache_resolve_queue_len;
76 bool mroute_do_assert;
77 bool mroute_do_pim;
78 int mroute_reg_vif_num;
79};
80
81/* mfc_flags:
82 * MFC_STATIC - the entry was added statically (not by a routing daemon)
83 */
84enum {
85 MFC_STATIC = BIT(0),
86};
87
88struct mfc_cache {
89 struct list_head list;
90 __be32 mfc_mcastgrp; /* Group the entry belongs to */
91 __be32 mfc_origin; /* Source of packet */
92 vifi_t mfc_parent; /* Source interface */
93 int mfc_flags; /* Flags on line */
94
95 union {
96 struct {
97 unsigned long expires;
98 struct sk_buff_head unresolved; /* Unresolved buffers */
99 } unres;
100 struct {
101 unsigned long last_assert;
102 int minvif;
103 int maxvif;
104 unsigned long bytes;
105 unsigned long pkt;
106 unsigned long wrong_if;
107 unsigned char ttls[MAXVIFS]; /* TTL thresholds */
108 } res;
109 } mfc_un;
110 struct rcu_head rcu;
111};
112
113#ifdef __BIG_ENDIAN
114#define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1))
115#else
116#define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1))
117#endif
118
119struct rtmsg;
120int ipmr_get_route(struct net *net, struct sk_buff *skb,
121 __be32 saddr, __be32 daddr,
122 struct rtmsg *rtm, int nowait);
123#endif