chiark / gitweb /
Revert "socket: add support for TCP fast Open"
[elogind.git] / src / network / networkd-wait-online-link.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4   This file is part of systemd.
5
6   Copyright 2014 Lennart Poettering
7   Copyright 2014 Tom Gundersen
8
9   systemd is free software; you can redistribute it and/or modify it
10   under the terms of the GNU Lesser General Public License as published by
11   the Free Software Foundation; either version 2.1 of the License, or
12   (at your option) any later version.
13
14   systemd is distributed in the hope that it will be useful, but
15   WITHOUT ANY WARRANTY; without even the implied warranty of
16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17   Lesser General Public License for more details.
18
19   You should have received a copy of the GNU Lesser General Public License
20   along with systemd; If not, see <http://www.gnu.org/licenses/>.
21 ***/
22
23 #include <net/if.h>
24
25 #include "sd-network.h"
26 #include "strv.h"
27
28 #include "networkd-wait-online-link.h"
29
30 int link_new(Manager *m, Link **ret, int ifindex, const char *ifname) {
31         _cleanup_(link_freep) Link *l = NULL;
32         int r;
33
34         assert(m);
35         assert(ifindex > 0);
36
37         r = hashmap_ensure_allocated(&m->links, NULL, NULL);
38         if (r < 0)
39                 return r;
40
41         r = hashmap_ensure_allocated(&m->links_by_name,
42                                      string_hash_func, string_compare_func);
43         if (r < 0)
44                 return r;
45
46         l = new0(Link, 1);
47         if (!l)
48                 return -ENOMEM;
49
50         l->manager = m;
51
52         l->ifname = strdup(ifname);
53         if (!l->ifname)
54                 return -ENOMEM;
55
56         r = hashmap_put(m->links_by_name, l->ifname, l);
57         if (r < 0)
58                 return r;
59
60         l->ifindex = ifindex;
61
62         r = hashmap_put(m->links, INT_TO_PTR(ifindex), l);
63         if (r < 0)
64                 return r;
65
66         if (ret)
67                 *ret = l;
68         l = NULL;
69
70         return 0;
71 }
72
73 Link *link_free(Link *l) {
74
75         if (!l)
76                 return NULL;
77
78         if (l->manager) {
79                 hashmap_remove(l->manager->links, INT_TO_PTR(l->ifindex));
80                 hashmap_remove(l->manager->links_by_name, l->ifname);
81         }
82
83         free(l->ifname);
84         free(l);
85         return NULL;
86  }
87
88 int link_update_rtnl(Link *l, sd_rtnl_message *m) {
89         const char *ifname;
90         int r;
91
92         assert(l);
93         assert(l->manager);
94         assert(m);
95
96         r = sd_rtnl_message_link_get_flags(m, &l->flags);
97         if (r < 0)
98                 return r;
99
100         r = sd_rtnl_message_read_string(m, IFLA_IFNAME, &ifname);
101         if (r < 0)
102                 return r;
103
104         if (!streq(l->ifname, ifname)) {
105                 char *new_ifname;
106
107                 new_ifname = strdup(ifname);
108                 if (!new_ifname)
109                         return -ENOMEM;
110
111                 hashmap_remove(l->manager->links_by_name, l->ifname);
112                 free(l->ifname);
113                 l->ifname = new_ifname;
114
115                 r = hashmap_put(l->manager->links_by_name, l->ifname, l);
116                 if (r < 0)
117                         return r;
118         }
119
120         return 0;
121 }
122
123 int link_update_monitor(Link *l) {
124         assert(l);
125
126         free(l->operational_state);
127         l->operational_state = NULL;
128
129         sd_network_link_get_operational_state(l->ifindex, &l->operational_state);
130
131         free(l->state);
132         l->state = NULL;
133
134         sd_network_link_get_setup_state(l->ifindex, &l->state);
135
136         return 0;
137 }
138
139 bool link_relevant(Link *l) {
140         assert(l);
141
142         if (l->flags & IFF_LOOPBACK)
143                 return false;
144
145         return true;
146 }