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
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2014 Lennart Poettering
Copyright 2014 Tom Gundersen
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <net/if.h>
#include "sd-network.h"
#include "strv.h"
#include "networkd-wait-online-link.h"
int link_new(Manager *m, Link **ret, int ifindex, const char *ifname) {
_cleanup_(link_freep) Link *l = NULL;
int r;
assert(m);
assert(ifindex > 0);
r = hashmap_ensure_allocated(&m->links, NULL, NULL);
if (r < 0)
return r;
r = hashmap_ensure_allocated(&m->links_by_name,
string_hash_func, string_compare_func);
if (r < 0)
return r;
l = new0(Link, 1);
if (!l)
return -ENOMEM;
l->manager = m;
l->ifname = strdup(ifname);
if (!l->ifname)
return -ENOMEM;
r = hashmap_put(m->links_by_name, l->ifname, l);
if (r < 0)
return r;
l->ifindex = ifindex;
r = hashmap_put(m->links, INT_TO_PTR(ifindex), l);
if (r < 0)
return r;
if (ret)
*ret = l;
l = NULL;
return 0;
}
Link *link_free(Link *l) {
if (!l)
return NULL;
if (l->manager) {
hashmap_remove(l->manager->links, INT_TO_PTR(l->ifindex));
hashmap_remove(l->manager->links_by_name, l->ifname);
}
free(l->ifname);
free(l);
return NULL;
}
int link_update_rtnl(Link *l, sd_rtnl_message *m) {
char *ifname;
int r;
assert(l);
assert(l->manager);
assert(m);
r = sd_rtnl_message_link_get_flags(m, &l->flags);
if (r < 0)
return r;
r = sd_rtnl_message_read_string(m, IFLA_IFNAME, &ifname);
if (r < 0)
return r;
if (!streq(l->ifname, ifname)) {
char *new_ifname;
new_ifname = strdup(ifname);
if (!new_ifname)
return -ENOMEM;
hashmap_remove(l->manager->links_by_name, l->ifname);
free(l->ifname);
l->ifname = new_ifname;
r = hashmap_put(l->manager->links_by_name, l->ifname, l);
if (r < 0)
return r;
}
return 0;
}
int link_update_monitor(Link *l) {
assert(l);
free(l->operational_state);
l->operational_state = NULL;
sd_network_get_link_operational_state(l->ifindex, &l->operational_state);
free(l->state);
l->state = NULL;
sd_network_get_link_state(l->ifindex, &l->state);
return 0;
}
bool link_relevant(Link *l) {
assert(l);
/* A link is relevant if it isn't a loopback device and has at
* least one relevant IP address */
if (l->flags & IFF_LOOPBACK)
return false;
/*
if (l->operational_state && !STR_IN_SET(l->operational_state, "unknown", "degraded", "routable"))
return false;
LIST_FOREACH(addresses, a, l->addresses)
if (link_address_relevant(a))
return true;
*/
return true;
}
|
