projects / mirror_iproute2.git / blame
| Commit | Line | Data |
|---|---|---|
| efe459c7 OH |
1 | /* |
| 2 | * iplink_vxcan.c vxcan device support (Virtual CAN Tunnel) | |
| 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 | * Author: Oliver Hartkopp <socketcan@hartkopp.net> | |
| 10 | * Based on: link_veth.c from Pavel Emelianov <xemul@openvz.org> | |
| 11 | */ | |
| 12 | ||
| 13 | #include <stdio.h> | |
| 14 | #include <stdlib.h> | |
| 15 | #include <string.h> | |
| 16 | #include <net/if.h> | |
| 17 | #include <linux/can/vxcan.h> | |
| 18 | ||
| 19 | #include "utils.h" | |
| 20 | #include "ip_common.h" | |
| 21 | ||
| 22 | static void print_usage(FILE *f) | |
| 23 | { | |
| 24 | printf("Usage: ip link <options> type vxcan [peer <options>]\n" | |
| 25 | "To get <options> type 'ip link add help'\n"); | |
| 26 | } | |
| 27 | ||
| 28 | static void usage(void) | |
| 29 | { | |
| 30 | print_usage(stderr); | |
| 31 | } | |
| 32 | ||
| 33 | static int vxcan_parse_opt(struct link_util *lu, int argc, char **argv, | |
| 34 | struct nlmsghdr *hdr) | |
| 35 | { | |
| 36 | char *dev = NULL; | |
| 37 | char *name = NULL; | |
| 38 | char *link = NULL; | |
| 39 | char *type = NULL; | |
| 40 | int index = 0; | |
| dac9ff35 | 41 | int err; |
| efe459c7 OH |
42 | struct rtattr *data; |
| 43 | int group; | |
| 44 | struct ifinfomsg *ifm, *peer_ifm; | |
| 45 | unsigned int ifi_flags, ifi_change; | |
| 46 | ||
| 47 | if (strcmp(argv[0], "peer") != 0) { | |
| 48 | usage(); | |
| 49 | return -1; | |
| 50 | } | |
| 51 | ||
| 52 | ifm = NLMSG_DATA(hdr); | |
| 53 | ifi_flags = ifm->ifi_flags; | |
| 54 | ifi_change = ifm->ifi_change; | |
| 55 | ifm->ifi_flags = 0; | |
| 56 | ifm->ifi_change = 0; | |
| 57 | ||
| 58 | data = NLMSG_TAIL(hdr); | |
| 59 | addattr_l(hdr, 1024, VXCAN_INFO_PEER, NULL, 0); | |
| 60 | ||
| 61 | hdr->nlmsg_len += sizeof(struct ifinfomsg); | |
| 62 | ||
| 63 | err = iplink_parse(argc - 1, argv + 1, (struct iplink_req *)hdr, | |
| 64 | &name, &type, &link, &dev, &group, &index); | |
| 65 | if (err < 0) | |
| 66 | return err; | |
| 67 | ||
| 8c0b19d1 SP |
68 | if (type) |
| 69 | duparg("type", argv[err]); | |
| 70 | ||
| efe459c7 | 71 | if (name) { |
| dac9ff35 SP |
72 | addattr_l(hdr, 1024, |
| 73 | IFLA_IFNAME, name, strlen(name) + 1); | |
| efe459c7 OH |
74 | } |
| 75 | ||
| 76 | peer_ifm = RTA_DATA(data); | |
| 77 | peer_ifm->ifi_index = index; | |
| 78 | peer_ifm->ifi_flags = ifm->ifi_flags; | |
| 79 | peer_ifm->ifi_change = ifm->ifi_change; | |
| 80 | ifm->ifi_flags = ifi_flags; | |
| 81 | ifm->ifi_change = ifi_change; | |
| 82 | ||
| 83 | if (group != -1) | |
| 84 | addattr32(hdr, 1024, IFLA_GROUP, group); | |
| 85 | ||
| 86 | data->rta_len = (void *)NLMSG_TAIL(hdr) - (void *)data; | |
| 87 | return argc - 1 - err; | |
| 88 | } | |
| 89 | ||
| 90 | static void vxcan_print_help(struct link_util *lu, int argc, char **argv, | |
| 91 | FILE *f) | |
| 92 | { | |
| 93 | print_usage(f); | |
| 94 | } | |
| 95 | ||
| 96 | struct link_util vxcan_link_util = { | |
| 97 | .id = "vxcan", | |
| 98 | .parse_opt = vxcan_parse_opt, | |
| 99 | .print_help = vxcan_print_help, | |
| 100 | }; |