blob: 874a6c9e42171291e374825be441a64e2a26b00c (
plain)
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
|
/*
* include/net/net_vrf.h - adds vrf dev structure definitions
* Copyright (c) 2015 Cumulus Networks
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __LINUX_NET_VRF_H
#define __LINUX_NET_VRF_H
struct net_vrf_dev {
struct rcu_head rcu;
int ifindex; /* ifindex of master dev */
u32 tb_id; /* table id for VRF */
};
struct slave {
struct list_head list;
struct net_device *dev;
};
struct slave_queue {
struct list_head all_slaves;
};
struct net_vrf {
struct slave_queue queue;
struct rtable *rth;
u32 tb_id;
};
#if IS_ENABLED(CONFIG_NET_VRF)
/* called with rcu_read_lock */
static inline u32 vrf_dev_table_rcu(const struct net_device *dev)
{
u32 tb_id = 0;
if (dev) {
struct net_vrf_dev *vrf_ptr;
vrf_ptr = rcu_dereference(dev->vrf_ptr);
if (vrf_ptr)
tb_id = vrf_ptr->tb_id;
}
return tb_id;
}
static inline u32 vrf_dev_table(const struct net_device *dev)
{
u32 tb_id;
rcu_read_lock();
tb_id = vrf_dev_table_rcu(dev);
rcu_read_unlock();
return tb_id;
}
static inline u32 vrf_dev_table_ifindex(struct net *net, int ifindex)
{
struct net_device *dev;
u32 tb_id = 0;
if (!ifindex)
return 0;
rcu_read_lock();
dev = dev_get_by_index_rcu(net, ifindex);
if (dev)
tb_id = vrf_dev_table_rcu(dev);
rcu_read_unlock();
return tb_id;
}
/* called with rtnl */
static inline u32 vrf_dev_table_rtnl(const struct net_device *dev)
{
u32 tb_id = 0;
if (dev) {
struct net_vrf_dev *vrf_ptr;
vrf_ptr = rtnl_dereference(dev->vrf_ptr);
if (vrf_ptr)
tb_id = vrf_ptr->tb_id;
}
return tb_id;
}
/* caller has already checked netif_is_l3_master(dev) */
static inline struct rtable *vrf_dev_get_rth(const struct net_device *dev)
{
struct rtable *rth = ERR_PTR(-ENETUNREACH);
struct net_vrf *vrf = netdev_priv(dev);
if (vrf) {
rth = vrf->rth;
atomic_inc(&rth->dst.__refcnt);
}
return rth;
}
#else
static inline u32 vrf_dev_table_rcu(const struct net_device *dev)
{
return 0;
}
static inline u32 vrf_dev_table(const struct net_device *dev)
{
return 0;
}
static inline u32 vrf_dev_table_ifindex(struct net *net, int ifindex)
{
return 0;
}
static inline u32 vrf_dev_table_rtnl(const struct net_device *dev)
{
return 0;
}
static inline struct rtable *vrf_dev_get_rth(const struct net_device *dev)
{
return ERR_PTR(-ENETUNREACH);
}
#endif
#endif /* __LINUX_NET_VRF_H */
|
