1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_MROUTE_H
#define __LINUX_MROUTE_H
#include <linux/in.h>
#include <linux/pim.h>
#include <linux/rhashtable.h>
#include <net/sock.h>
#include <net/fib_rules.h>
#include <net/fib_notifier.h>
#include <uapi/linux/mroute.h>
#ifdef CONFIG_IP_MROUTE
static inline int ip_mroute_opt(int opt)
{
return opt >= MRT_BASE && opt <= MRT_MAX;
}
int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
int ip_mr_init(void);
bool ipmr_rule_default(const struct fib_rule *rule);
#else
static inline int ip_mroute_setsockopt(struct sock *sock, int optname,
char __user *optval, unsigned int optlen)
{
return -ENOPROTOOPT;
}
static inline int ip_mroute_getsockopt(struct sock *sock, int optname,
char __user *optval, int __user *optlen)
{
return -ENOPROTOOPT;
}
static inline int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg)
{
return -ENOIOCTLCMD;
}
static inline int ip_mr_init(void)
{
return 0;
}
static inline int ip_mroute_opt(int opt)
{
return 0;
}
static inline bool ipmr_rule_default(const struct fib_rule *rule)
{
return true;
}
#endif
struct vif_device {
struct net_device *dev; /* Device we are using */
struct netdev_phys_item_id dev_parent_id; /* Device parent ID */
unsigned long bytes_in,bytes_out;
unsigned long pkt_in,pkt_out; /* Statistics */
unsigned long rate_limit; /* Traffic shaping (NI) */
unsigned char threshold; /* TTL threshold */
unsigned short flags; /* Control flags */
__be32 local,remote; /* Addresses(remote for tunnels)*/
int link; /* Physical interface index */
};
struct vif_entry_notifier_info {
struct fib_notifier_info info;
struct net_device *dev;
vifi_t vif_index;
unsigned short vif_flags;
u32 tb_id;
};
#define VIFF_STATIC 0x8000
#define VIF_EXISTS(_mrt, _idx) ((_mrt)->vif_table[_idx].dev != NULL)
struct mr_table {
struct list_head list;
possible_net_t net;
u32 id;
struct sock __rcu *mroute_sk;
struct timer_list ipmr_expire_timer;
struct list_head mfc_unres_queue;
struct vif_device vif_table[MAXVIFS];
struct rhltable mfc_hash;
struct list_head mfc_cache_list;
int maxvif;
atomic_t cache_resolve_queue_len;
bool mroute_do_assert;
bool mroute_do_pim;
int mroute_reg_vif_num;
};
/* mfc_flags:
* MFC_STATIC - the entry was added statically (not by a routing daemon)
* MFC_OFFLOAD - the entry was offloaded to the hardware
*/
enum {
MFC_STATIC = BIT(0),
MFC_OFFLOAD = BIT(1),
};
struct mfc_cache_cmp_arg {
__be32 mfc_mcastgrp;
__be32 mfc_origin;
};
/**
* struct mfc_cache - multicast routing entries
* @mnode: rhashtable list
* @mfc_mcastgrp: destination multicast group address
* @mfc_origin: source address
* @cmparg: used for rhashtable comparisons
* @mfc_parent: source interface (iif)
* @mfc_flags: entry flags
* @expires: unresolved entry expire time
* @unresolved: unresolved cached skbs
* @last_assert: time of last assert
* @minvif: minimum VIF id
* @maxvif: maximum VIF id
* @bytes: bytes that have passed for this entry
* @pkt: packets that have passed for this entry
* @wrong_if: number of wrong source interface hits
* @lastuse: time of last use of the group (traffic or update)
* @ttls: OIF TTL threshold array
* @refcount: reference count for this entry
* @list: global entry list
* @rcu: used for entry destruction
*/
struct mfc_cache {
struct rhlist_head mnode;
union {
struct {
__be32 mfc_mcastgrp;
__be32 mfc_origin;
};
struct mfc_cache_cmp_arg cmparg;
};
vifi_t mfc_parent;
int mfc_flags;
union {
struct {
unsigned long expires;
struct sk_buff_head unresolved;
} unres;
struct {
unsigned long last_assert;
int minvif;
int maxvif;
unsigned long bytes;
unsigned long pkt;
unsigned long wrong_if;
unsigned long lastuse;
unsigned char ttls[MAXVIFS];
refcount_t refcount;
} res;
} mfc_un;
struct list_head list;
struct rcu_head rcu;
};
struct mfc_entry_notifier_info {
struct fib_notifier_info info;
struct mfc_cache *mfc;
u32 tb_id;
};
struct rtmsg;
int ipmr_get_route(struct net *net, struct sk_buff *skb,
__be32 saddr, __be32 daddr,
struct rtmsg *rtm, u32 portid);
#ifdef CONFIG_IP_MROUTE
void ipmr_cache_free(struct mfc_cache *mfc_cache);
#else
static inline void ipmr_cache_free(struct mfc_cache *mfc_cache)
{
}
#endif
static inline void ipmr_cache_put(struct mfc_cache *c)
{
if (refcount_dec_and_test(&c->mfc_un.res.refcount))
ipmr_cache_free(c);
}
static inline void ipmr_cache_hold(struct mfc_cache *c)
{
refcount_inc(&c->mfc_un.res.refcount);
}
#endif
|
