Vlad Yasevich | 9eff0e5 | 2013-02-28 10:04:05 +0000 | [diff] [blame^] | 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <unistd.h> |
| 4 | #include <fcntl.h> |
| 5 | #include <sys/socket.h> |
| 6 | #include <net/if.h> |
| 7 | #include <netinet/in.h> |
| 8 | #include <linux/if_bridge.h> |
| 9 | #include <linux/if_ether.h> |
| 10 | #include <string.h> |
| 11 | |
| 12 | #include "libnetlink.h" |
| 13 | #include "br_common.h" |
| 14 | #include "utils.h" |
| 15 | |
| 16 | int filter_index; |
| 17 | |
| 18 | static void usage(void) |
| 19 | { |
| 20 | fprintf(stderr, "Usage: bridge vlan { add | del } vid VLAN_ID dev DEV [ pvid] [ untagged ]\n"); |
| 21 | fprintf(stderr, " [ self ] [ master ]\n"); |
| 22 | fprintf(stderr, " bridge vlan { show } [ dev DEV ]\n"); |
| 23 | exit(-1); |
| 24 | } |
| 25 | |
| 26 | static int vlan_modify(int cmd, int argc, char **argv) |
| 27 | { |
| 28 | struct { |
| 29 | struct nlmsghdr n; |
| 30 | struct ifinfomsg ifm; |
| 31 | char buf[1024]; |
| 32 | } req; |
| 33 | char *d = NULL; |
| 34 | short vid = -1; |
| 35 | struct rtattr *afspec; |
| 36 | struct bridge_vlan_info vinfo; |
| 37 | unsigned short flags = 0; |
| 38 | |
| 39 | memset(&vinfo, 0, sizeof(vinfo)); |
| 40 | memset(&req, 0, sizeof(req)); |
| 41 | |
| 42 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
| 43 | req.n.nlmsg_flags = NLM_F_REQUEST; |
| 44 | req.n.nlmsg_type = cmd; |
| 45 | req.ifm.ifi_family = PF_BRIDGE; |
| 46 | |
| 47 | while (argc > 0) { |
| 48 | if (strcmp(*argv, "dev") == 0) { |
| 49 | NEXT_ARG(); |
| 50 | d = *argv; |
| 51 | } else if (strcmp(*argv, "vid") == 0) { |
| 52 | NEXT_ARG(); |
| 53 | vid = atoi(*argv); |
| 54 | } else if (strcmp(*argv, "self") == 0) { |
| 55 | flags |= BRIDGE_FLAGS_SELF; |
| 56 | } else if (strcmp(*argv, "master") == 0) { |
| 57 | flags |= BRIDGE_FLAGS_MASTER; |
| 58 | } else if (strcmp(*argv, "pvid") == 0) { |
| 59 | vinfo.flags |= BRIDGE_VLAN_INFO_PVID; |
| 60 | } else if (strcmp(*argv, "untagged") == 0) { |
| 61 | vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; |
| 62 | } else { |
| 63 | if (matches(*argv, "help") == 0) { |
| 64 | NEXT_ARG(); |
| 65 | } |
| 66 | } |
| 67 | argc--; argv++; |
| 68 | } |
| 69 | |
| 70 | if (d == NULL || vid == -1) { |
| 71 | fprintf(stderr, "Device and VLAN ID are required arguments.\n"); |
| 72 | exit(-1); |
| 73 | } |
| 74 | |
| 75 | req.ifm.ifi_index = ll_name_to_index(d); |
| 76 | if (req.ifm.ifi_index == 0) { |
| 77 | fprintf(stderr, "Cannot find bridge device \"%s\"\n", d); |
| 78 | return -1; |
| 79 | } |
| 80 | |
| 81 | if (vid >= 4096) { |
| 82 | fprintf(stderr, "Invalid VLAN ID \"%hu\"\n", vid); |
| 83 | return -1; |
| 84 | } |
| 85 | |
| 86 | vinfo.vid = vid; |
| 87 | |
| 88 | afspec = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC); |
| 89 | |
| 90 | if (flags) |
| 91 | addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags); |
| 92 | |
| 93 | addattr_l(&req.n, sizeof(req), IFLA_BRIDGE_VLAN_INFO, &vinfo, |
| 94 | sizeof(vinfo)); |
| 95 | |
| 96 | addattr_nest_end(&req.n, afspec); |
| 97 | |
| 98 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0) |
| 99 | exit(2); |
| 100 | |
| 101 | return 0; |
| 102 | } |
| 103 | |
| 104 | static int print_vlan(const struct sockaddr_nl *who, |
| 105 | struct nlmsghdr *n, |
| 106 | void *arg) |
| 107 | { |
| 108 | FILE *fp = arg; |
| 109 | struct ifinfomsg *ifm = NLMSG_DATA(n); |
| 110 | int len = n->nlmsg_len; |
| 111 | struct rtattr * tb[IFLA_MAX+1]; |
| 112 | |
| 113 | if (n->nlmsg_type != RTM_NEWLINK) { |
| 114 | fprintf(stderr, "Not RTM_NEWLINK: %08x %08x %08x\n", |
| 115 | n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); |
| 116 | return 0; |
| 117 | } |
| 118 | |
| 119 | len -= NLMSG_LENGTH(sizeof(*ifm)); |
| 120 | if (len < 0) { |
| 121 | fprintf(stderr, "BUG: wrong nlmsg len %d\n", len); |
| 122 | return -1; |
| 123 | } |
| 124 | |
| 125 | if (ifm->ifi_family != AF_BRIDGE) |
| 126 | return 0; |
| 127 | |
| 128 | if (filter_index && filter_index != ifm->ifi_index) |
| 129 | return 0; |
| 130 | |
| 131 | parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifm), len); |
| 132 | |
| 133 | /* if AF_SPEC isn't there, vlan table is not preset for this port */ |
| 134 | if (!tb[IFLA_AF_SPEC]) { |
| 135 | fprintf(fp, "%s\tNone\n", ll_index_to_name(ifm->ifi_index)); |
| 136 | return 0; |
| 137 | } else { |
| 138 | struct rtattr *i, *list = tb[IFLA_AF_SPEC]; |
| 139 | int rem = RTA_PAYLOAD(list); |
| 140 | |
| 141 | fprintf(fp, "%s", ll_index_to_name(ifm->ifi_index)); |
| 142 | for (i = RTA_DATA(list); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) { |
| 143 | struct bridge_vlan_info *vinfo; |
| 144 | |
| 145 | if (i->rta_type != IFLA_BRIDGE_VLAN_INFO) |
| 146 | continue; |
| 147 | |
| 148 | vinfo = RTA_DATA(i); |
| 149 | fprintf(fp, "\t %hu", vinfo->vid); |
| 150 | if (vinfo->flags & BRIDGE_VLAN_INFO_PVID) |
| 151 | fprintf(fp, " PVID"); |
| 152 | if (vinfo->flags & BRIDGE_VLAN_INFO_UNTAGGED) |
| 153 | fprintf(fp, " Egress Untagged"); |
| 154 | fprintf(fp, "\n"); |
| 155 | } |
| 156 | } |
| 157 | fprintf(fp, "\n"); |
| 158 | fflush(fp); |
| 159 | return 0; |
| 160 | } |
| 161 | |
| 162 | static int vlan_show(int argc, char **argv) |
| 163 | { |
| 164 | char *filter_dev = NULL; |
| 165 | |
| 166 | while (argc > 0) { |
| 167 | if (strcmp(*argv, "dev") == 0) { |
| 168 | NEXT_ARG(); |
| 169 | if (filter_dev) |
| 170 | duparg("dev", *argv); |
| 171 | filter_dev = *argv; |
| 172 | } |
| 173 | argc--; argv++; |
| 174 | } |
| 175 | |
| 176 | if (filter_dev) { |
| 177 | if ((filter_index = if_nametoindex(filter_dev)) == 0) { |
| 178 | fprintf(stderr, "Cannot find device \"%s\"\n", |
| 179 | filter_dev); |
| 180 | return -1; |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | if (rtnl_wilddump_req_filter(&rth, PF_BRIDGE, RTM_GETLINK, |
| 185 | RTEXT_FILTER_BRVLAN) < 0) { |
| 186 | perror("Cannont send dump request"); |
| 187 | exit(1); |
| 188 | } |
| 189 | |
| 190 | printf("port\tvlan ids\n"); |
| 191 | if (rtnl_dump_filter(&rth, print_vlan, stdout) < 0) { |
| 192 | fprintf(stderr, "Dump ternminated\n"); |
| 193 | exit(1); |
| 194 | } |
| 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | |
| 200 | int do_vlan(int argc, char **argv) |
| 201 | { |
| 202 | ll_init_map(&rth); |
| 203 | |
| 204 | if (argc > 0) { |
| 205 | if (matches(*argv, "add") == 0) |
| 206 | return vlan_modify(RTM_SETLINK, argc-1, argv+1); |
| 207 | if (matches(*argv, "delete") == 0) |
| 208 | return vlan_modify(RTM_DELLINK, argc-1, argv+1); |
| 209 | if (matches(*argv, "show") == 0 || |
| 210 | matches(*argv, "lst") == 0 || |
| 211 | matches(*argv, "list") == 0) |
| 212 | return vlan_show(argc-1, argv+1); |
| 213 | if (matches(*argv, "help") == 0) |
| 214 | usage(); |
| 215 | } else |
| 216 | return vlan_show(0, NULL); |
| 217 | |
| 218 | fprintf(stderr, "Command \"%s\" is unknown, try \"bridge fdb help\".\n", *argv); |
| 219 | exit(-1); |
| 220 | } |