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2da55b1b PE |
1 | /* |
2 | * link_veth.c veth driver module | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Pavel Emelianov <xemul@openvz.org> | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <string.h> | |
c595fda5 | 14 | #include <net/if.h> |
118c923c | 15 | #include <linux/veth.h> |
2da55b1b PE |
16 | |
17 | #include "utils.h" | |
18 | #include "ip_common.h" | |
2da55b1b | 19 | |
561e650e | 20 | static void print_usage(FILE *f) |
2da55b1b | 21 | { |
ac3ff720 SH |
22 | printf("Usage: ip link <options> type veth [peer <options>]\n" |
23 | "To get <options> type 'ip link add help'\n"); | |
2da55b1b PE |
24 | } |
25 | ||
561e650e | 26 | static void usage(void) |
27 | { | |
28 | print_usage(stderr); | |
29 | } | |
30 | ||
2da55b1b | 31 | static int veth_parse_opt(struct link_util *lu, int argc, char **argv, |
28254695 | 32 | struct nlmsghdr *n) |
2da55b1b | 33 | { |
be2c3142 | 34 | char *type = NULL; |
dac9ff35 | 35 | int err; |
56f5daac | 36 | struct rtattr *data; |
18917544 | 37 | struct ifinfomsg *ifm, *peer_ifm; |
c58213f6 | 38 | unsigned int ifi_flags, ifi_change, ifi_index; |
2da55b1b | 39 | |
f9329cca VG |
40 | if (strcmp(argv[0], "peer") != 0) { |
41 | usage(); | |
42 | return -1; | |
43 | } | |
2da55b1b | 44 | |
28254695 | 45 | ifm = NLMSG_DATA(n); |
18917544 KK |
46 | ifi_flags = ifm->ifi_flags; |
47 | ifi_change = ifm->ifi_change; | |
c58213f6 | 48 | ifi_index = ifm->ifi_index; |
18917544 KK |
49 | ifm->ifi_flags = 0; |
50 | ifm->ifi_change = 0; | |
c58213f6 | 51 | ifm->ifi_index = 0; |
18917544 | 52 | |
c14f9d92 | 53 | data = addattr_nest(n, 1024, VETH_INFO_PEER); |
2da55b1b | 54 | |
28254695 | 55 | n->nlmsg_len += sizeof(struct ifinfomsg); |
2da55b1b | 56 | |
c58213f6 | 57 | err = iplink_parse(argc - 1, argv + 1, (struct iplink_req *)n, &type); |
f9329cca VG |
58 | if (err < 0) |
59 | return err; | |
2da55b1b | 60 | |
8c0b19d1 SP |
61 | if (type) |
62 | duparg("type", argv[err]); | |
63 | ||
18917544 | 64 | peer_ifm = RTA_DATA(data); |
c58213f6 | 65 | peer_ifm->ifi_index = ifm->ifi_index; |
18917544 KK |
66 | peer_ifm->ifi_flags = ifm->ifi_flags; |
67 | peer_ifm->ifi_change = ifm->ifi_change; | |
68 | ifm->ifi_flags = ifi_flags; | |
69 | ifm->ifi_change = ifi_change; | |
c58213f6 | 70 | ifm->ifi_index = ifi_index; |
e0d47aa3 | 71 | |
c14f9d92 | 72 | addattr_nest_end(n, data); |
f9329cca | 73 | return argc - 1 - err; |
2da55b1b PE |
74 | } |
75 | ||
561e650e | 76 | static void veth_print_help(struct link_util *lu, int argc, char **argv, |
77 | FILE *f) | |
78 | { | |
79 | print_usage(f); | |
80 | } | |
81 | ||
2da55b1b PE |
82 | struct link_util veth_link_util = { |
83 | .id = "veth", | |
84 | .parse_opt = veth_parse_opt, | |
561e650e | 85 | .print_help = veth_print_help, |
2da55b1b | 86 | }; |