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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2014 Susant Sahani <susant@redhat.com> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <netinet/ether.h> | |
23 | #include <arpa/inet.h> | |
24 | #include <net/if.h> | |
25 | #include <linux/veth.h> | |
26 | ||
27 | #include "sd-rtnl.h" | |
3be1d7e0 | 28 | #include "networkd-netdev-veth.h" |
10142d75 | 29 | |
aa9f1140 TG |
30 | static int netdev_veth_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) { |
31 | Veth *v = VETH(netdev); | |
10142d75 SS |
32 | int r; |
33 | ||
34 | assert(netdev); | |
aa9f1140 TG |
35 | assert(!link); |
36 | assert(v); | |
10142d75 SS |
37 | assert(m); |
38 | ||
10142d75 SS |
39 | r = sd_rtnl_message_open_container(m, VETH_INFO_PEER); |
40 | if (r < 0) { | |
79008bdd | 41 | log_netdev_error(netdev, |
ed7fb9cb | 42 | "Could not append VETH_INFO_PEER attribute: %s", |
10142d75 SS |
43 | strerror(-r)); |
44 | return r; | |
45 | } | |
46 | ||
aa9f1140 TG |
47 | if (v->ifname_peer) { |
48 | r = sd_rtnl_message_append_string(m, IFLA_IFNAME, v->ifname_peer); | |
10142d75 | 49 | if (r < 0) { |
da927ba9 | 50 | log_error_errno(r, "Failed to add netlink interface name: %m"); |
10142d75 SS |
51 | return r; |
52 | } | |
53 | } | |
54 | ||
aa9f1140 TG |
55 | if (v->mac_peer) { |
56 | r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, v->mac_peer); | |
96c90742 | 57 | if (r < 0) { |
79008bdd | 58 | log_netdev_error(netdev, |
6eb33ab2 | 59 | "Could not append IFLA_ADDRESS attribute: %s", |
96c90742 TG |
60 | strerror(-r)); |
61 | return r; | |
62 | } | |
63 | } | |
64 | ||
10142d75 SS |
65 | r = sd_rtnl_message_close_container(m); |
66 | if (r < 0) { | |
79008bdd | 67 | log_netdev_error(netdev, |
10142d75 SS |
68 | "Could not append IFLA_INFO_DATA attribute: %s", |
69 | strerror(-r)); | |
70 | return r; | |
71 | } | |
72 | ||
10142d75 SS |
73 | return r; |
74 | } | |
75 | ||
3be1d7e0 | 76 | static int netdev_veth_verify(NetDev *netdev, const char *filename) { |
aa9f1140 | 77 | Veth *v = VETH(netdev); |
10142d75 SS |
78 | int r; |
79 | ||
80 | assert(netdev); | |
aa9f1140 | 81 | assert(v); |
3be1d7e0 | 82 | assert(filename); |
10142d75 | 83 | |
aa9f1140 | 84 | if (!v->ifname_peer) { |
3be1d7e0 TG |
85 | log_warning("Veth NetDev without peer name configured in %s. Ignoring", |
86 | filename); | |
87 | return -EINVAL; | |
10142d75 SS |
88 | } |
89 | ||
aa9f1140 TG |
90 | if (!v->mac_peer) { |
91 | r = netdev_get_mac(v->ifname_peer, &v->mac_peer); | |
3be1d7e0 TG |
92 | if (r < 0) { |
93 | log_warning("Failed to generate predictable MAC address for %s. Ignoring", | |
aa9f1140 | 94 | v->ifname_peer); |
3be1d7e0 TG |
95 | return -EINVAL; |
96 | } | |
10142d75 SS |
97 | } |
98 | ||
10142d75 SS |
99 | return 0; |
100 | } | |
3be1d7e0 | 101 | |
aa9f1140 TG |
102 | static void veth_done(NetDev *n) { |
103 | Veth *v = VETH(n); | |
104 | ||
105 | assert(n); | |
106 | assert(v); | |
107 | ||
108 | free(v->ifname_peer); | |
109 | free(v->mac_peer); | |
110 | } | |
111 | ||
3be1d7e0 | 112 | const NetDevVTable veth_vtable = { |
aa9f1140 TG |
113 | .object_size = sizeof(Veth), |
114 | .sections = "Match\0NetDev\0Peer\0", | |
115 | .done = veth_done, | |
3be1d7e0 | 116 | .fill_message_create = netdev_veth_fill_message_create, |
aa9f1140 | 117 | .create_type = NETDEV_CREATE_INDEPENDENT, |
3be1d7e0 TG |
118 | .config_verify = netdev_veth_verify, |
119 | }; |