Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Get mdb table with netlink |
| 3 | */ |
| 4 | |
| 5 | #include <stdio.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <unistd.h> |
| 8 | #include <fcntl.h> |
| 9 | #include <sys/socket.h> |
| 10 | #include <net/if.h> |
| 11 | #include <netinet/in.h> |
| 12 | #include <linux/if_bridge.h> |
| 13 | #include <linux/if_ether.h> |
| 14 | #include <string.h> |
| 15 | #include <arpa/inet.h> |
| 16 | |
| 17 | #include "libnetlink.h" |
| 18 | #include "br_common.h" |
| 19 | #include "rt_names.h" |
| 20 | #include "utils.h" |
| 21 | |
| 22 | #ifndef MDBA_RTA |
| 23 | #define MDBA_RTA(r) \ |
| 24 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct br_port_msg)))) |
| 25 | #endif |
| 26 | |
Andreas Henriksson | 9dca899 | 2014-06-04 19:40:37 +0200 | [diff] [blame] | 27 | static unsigned int filter_index; |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 28 | |
| 29 | static void usage(void) |
| 30 | { |
Nikolay Aleksandrov | 6aac861 | 2015-07-15 08:45:20 -0700 | [diff] [blame] | 31 | fprintf(stderr, "Usage: bridge mdb { add | del } dev DEV port PORT grp GROUP [permanent | temp] [vid VID]\n"); |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 32 | fprintf(stderr, " bridge mdb {show} [ dev DEV ]\n"); |
| 33 | exit(-1); |
| 34 | } |
| 35 | |
| 36 | static void br_print_router_ports(FILE *f, struct rtattr *attr) |
| 37 | { |
| 38 | uint32_t *port_ifindex; |
| 39 | struct rtattr *i; |
| 40 | int rem; |
| 41 | |
| 42 | rem = RTA_PAYLOAD(attr); |
| 43 | for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) { |
| 44 | port_ifindex = RTA_DATA(i); |
| 45 | fprintf(f, "%s ", ll_index_to_name(*port_ifindex)); |
| 46 | } |
| 47 | |
| 48 | fprintf(f, "\n"); |
| 49 | } |
| 50 | |
Nikolay Aleksandrov | 90d7315 | 2015-07-30 11:30:32 +0200 | [diff] [blame] | 51 | static void print_mdb_entry(FILE *f, int ifindex, struct br_mdb_entry *e, |
Nikolay Aleksandrov | 05d4f64 | 2016-02-22 15:16:13 +0100 | [diff] [blame] | 52 | struct nlmsghdr *n, struct rtattr **tb) |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 53 | { |
| 54 | SPRINT_BUF(abuf); |
Nikolay Aleksandrov | 6aac861 | 2015-07-15 08:45:20 -0700 | [diff] [blame] | 55 | const void *src; |
| 56 | int af; |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 57 | |
Nikolay Aleksandrov | 6aac861 | 2015-07-15 08:45:20 -0700 | [diff] [blame] | 58 | af = e->addr.proto == htons(ETH_P_IP) ? AF_INET : AF_INET6; |
| 59 | src = af == AF_INET ? (const void *)&e->addr.u.ip4 : |
| 60 | (const void *)&e->addr.u.ip6; |
Nikolay Aleksandrov | 90d7315 | 2015-07-30 11:30:32 +0200 | [diff] [blame] | 61 | if (n->nlmsg_type == RTM_DELMDB) |
| 62 | fprintf(f, "Deleted "); |
Elad Raz | 29d61fb | 2016-03-06 12:46:04 -0800 | [diff] [blame^] | 63 | fprintf(f, "dev %s port %s grp %s %s %s", ll_index_to_name(ifindex), |
Nikolay Aleksandrov | 6aac861 | 2015-07-15 08:45:20 -0700 | [diff] [blame] | 64 | ll_index_to_name(e->ifindex), |
| 65 | inet_ntop(af, src, abuf, sizeof(abuf)), |
Elad Raz | 29d61fb | 2016-03-06 12:46:04 -0800 | [diff] [blame^] | 66 | (e->state & MDB_PERMANENT) ? "permanent" : "temp", |
| 67 | (e->flags & MDB_FLAGS_OFFLOAD) ? "offload" : ""); |
Nikolay Aleksandrov | 6aac861 | 2015-07-15 08:45:20 -0700 | [diff] [blame] | 68 | if (e->vid) |
| 69 | fprintf(f, " vid %hu", e->vid); |
Nikolay Aleksandrov | 05d4f64 | 2016-02-22 15:16:13 +0100 | [diff] [blame] | 70 | if (show_stats && tb && tb[MDBA_MDB_EATTR_TIMER]) { |
| 71 | struct timeval tv; |
| 72 | |
| 73 | __jiffies_to_tv(&tv, rta_getattr_u32(tb[MDBA_MDB_EATTR_TIMER])); |
| 74 | fprintf(f, "%4i.%.2i", (int)tv.tv_sec, (int)tv.tv_usec/10000); |
| 75 | } |
Nikolay Aleksandrov | 6aac861 | 2015-07-15 08:45:20 -0700 | [diff] [blame] | 76 | fprintf(f, "\n"); |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 77 | } |
| 78 | |
Nikolay Aleksandrov | 90d7315 | 2015-07-30 11:30:32 +0200 | [diff] [blame] | 79 | static void br_print_mdb_entry(FILE *f, int ifindex, struct rtattr *attr, |
| 80 | struct nlmsghdr *n) |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 81 | { |
Nikolay Aleksandrov | 05d4f64 | 2016-02-22 15:16:13 +0100 | [diff] [blame] | 82 | struct rtattr *etb[MDBA_MDB_EATTR_MAX + 1]; |
| 83 | struct br_mdb_entry *e; |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 84 | struct rtattr *i; |
| 85 | int rem; |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 86 | |
| 87 | rem = RTA_PAYLOAD(attr); |
| 88 | for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) { |
| 89 | e = RTA_DATA(i); |
Nikolay Aleksandrov | 05d4f64 | 2016-02-22 15:16:13 +0100 | [diff] [blame] | 90 | parse_rtattr(etb, MDBA_MDB_EATTR_MAX, MDB_RTA(RTA_DATA(i)), |
| 91 | RTA_PAYLOAD(i) - RTA_ALIGN(sizeof(*e))); |
| 92 | print_mdb_entry(f, ifindex, e, n, etb); |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 93 | } |
| 94 | } |
| 95 | |
| 96 | int print_mdb(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg) |
| 97 | { |
| 98 | FILE *fp = arg; |
| 99 | struct br_port_msg *r = NLMSG_DATA(n); |
| 100 | int len = n->nlmsg_len; |
Nikolay Aleksandrov | 6b4867e | 2015-07-27 13:44:05 +0200 | [diff] [blame] | 101 | struct rtattr *tb[MDBA_MAX+1], *i; |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 102 | |
Cong Wang | 4a4ee61 | 2012-12-11 22:23:10 +0000 | [diff] [blame] | 103 | if (n->nlmsg_type != RTM_GETMDB && n->nlmsg_type != RTM_NEWMDB && n->nlmsg_type != RTM_DELMDB) { |
| 104 | fprintf(stderr, "Not RTM_GETMDB, RTM_NEWMDB or RTM_DELMDB: %08x %08x %08x\n", |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 105 | n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); |
| 106 | |
| 107 | return 0; |
| 108 | } |
| 109 | |
| 110 | len -= NLMSG_LENGTH(sizeof(*r)); |
| 111 | if (len < 0) { |
| 112 | fprintf(stderr, "BUG: wrong nlmsg len %d\n", len); |
| 113 | return -1; |
| 114 | } |
| 115 | |
| 116 | if (filter_index && filter_index != r->ifindex) |
| 117 | return 0; |
| 118 | |
| 119 | parse_rtattr(tb, MDBA_MAX, MDBA_RTA(r), n->nlmsg_len - NLMSG_LENGTH(sizeof(*r))); |
| 120 | |
| 121 | if (tb[MDBA_MDB]) { |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 122 | int rem = RTA_PAYLOAD(tb[MDBA_MDB]); |
| 123 | |
| 124 | for (i = RTA_DATA(tb[MDBA_MDB]); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) |
Nikolay Aleksandrov | 90d7315 | 2015-07-30 11:30:32 +0200 | [diff] [blame] | 125 | br_print_mdb_entry(fp, r->ifindex, i, n); |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | if (tb[MDBA_ROUTER]) { |
Nikolay Aleksandrov | 6b4867e | 2015-07-27 13:44:05 +0200 | [diff] [blame] | 129 | if (n->nlmsg_type == RTM_GETMDB) { |
| 130 | if (show_details) { |
| 131 | fprintf(fp, "router ports on %s: ", |
| 132 | ll_index_to_name(r->ifindex)); |
| 133 | br_print_router_ports(fp, tb[MDBA_ROUTER]); |
| 134 | } |
| 135 | } else { |
| 136 | uint32_t *port_ifindex; |
| 137 | |
| 138 | i = RTA_DATA(tb[MDBA_ROUTER]); |
| 139 | port_ifindex = RTA_DATA(i); |
| 140 | if (n->nlmsg_type == RTM_DELMDB) |
| 141 | fprintf(fp, "Deleted "); |
| 142 | fprintf(fp, "router port dev %s master %s\n", |
| 143 | ll_index_to_name(*port_ifindex), |
| 144 | ll_index_to_name(r->ifindex)); |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 145 | } |
| 146 | } |
| 147 | |
Wilson Kok | 4d45bf3 | 2015-10-15 14:53:17 -0700 | [diff] [blame] | 148 | fflush(fp); |
| 149 | |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 150 | return 0; |
| 151 | } |
| 152 | |
| 153 | static int mdb_show(int argc, char **argv) |
| 154 | { |
| 155 | char *filter_dev = NULL; |
| 156 | |
| 157 | while (argc > 0) { |
| 158 | if (strcmp(*argv, "dev") == 0) { |
| 159 | NEXT_ARG(); |
| 160 | if (filter_dev) |
| 161 | duparg("dev", *argv); |
| 162 | filter_dev = *argv; |
| 163 | } |
| 164 | argc--; argv++; |
| 165 | } |
| 166 | |
| 167 | if (filter_dev) { |
| 168 | filter_index = if_nametoindex(filter_dev); |
| 169 | if (filter_index == 0) { |
| 170 | fprintf(stderr, "Cannot find device \"%s\"\n", |
| 171 | filter_dev); |
| 172 | return -1; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | if (rtnl_wilddump_request(&rth, PF_BRIDGE, RTM_GETMDB) < 0) { |
| 177 | perror("Cannot send dump request"); |
Roopa Prabhu | 42ecedd | 2015-03-17 19:26:32 -0700 | [diff] [blame] | 178 | return -1; |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | if (rtnl_dump_filter(&rth, print_mdb, stdout) < 0) { |
| 182 | fprintf(stderr, "Dump terminated\n"); |
Roopa Prabhu | 42ecedd | 2015-03-17 19:26:32 -0700 | [diff] [blame] | 183 | return -1; |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 184 | } |
| 185 | |
| 186 | return 0; |
| 187 | } |
| 188 | |
Cong Wang | 9dca676 | 2012-12-11 22:23:09 +0000 | [diff] [blame] | 189 | static int mdb_modify(int cmd, int flags, int argc, char **argv) |
| 190 | { |
| 191 | struct { |
| 192 | struct nlmsghdr n; |
| 193 | struct br_port_msg bpm; |
| 194 | char buf[1024]; |
| 195 | } req; |
| 196 | struct br_mdb_entry entry; |
| 197 | char *d = NULL, *p = NULL, *grp = NULL; |
Nikolay Aleksandrov | 6aac861 | 2015-07-15 08:45:20 -0700 | [diff] [blame] | 198 | short vid = 0; |
Cong Wang | 9dca676 | 2012-12-11 22:23:09 +0000 | [diff] [blame] | 199 | |
| 200 | memset(&req, 0, sizeof(req)); |
| 201 | memset(&entry, 0, sizeof(entry)); |
| 202 | |
| 203 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct br_port_msg)); |
| 204 | req.n.nlmsg_flags = NLM_F_REQUEST|flags; |
| 205 | req.n.nlmsg_type = cmd; |
| 206 | req.bpm.family = PF_BRIDGE; |
| 207 | |
| 208 | while (argc > 0) { |
| 209 | if (strcmp(*argv, "dev") == 0) { |
| 210 | NEXT_ARG(); |
| 211 | d = *argv; |
| 212 | } else if (strcmp(*argv, "grp") == 0) { |
| 213 | NEXT_ARG(); |
| 214 | grp = *argv; |
Cong Wang | d8b75d1 | 2012-12-20 10:54:19 -0800 | [diff] [blame] | 215 | } else if (strcmp(*argv, "port") == 0) { |
| 216 | NEXT_ARG(); |
| 217 | p = *argv; |
| 218 | } else if (strcmp(*argv, "permanent") == 0) { |
| 219 | if (cmd == RTM_NEWMDB) |
| 220 | entry.state |= MDB_PERMANENT; |
| 221 | } else if (strcmp(*argv, "temp") == 0) { |
| 222 | ;/* nothing */ |
Nikolay Aleksandrov | 6aac861 | 2015-07-15 08:45:20 -0700 | [diff] [blame] | 223 | } else if (strcmp(*argv, "vid") == 0) { |
| 224 | NEXT_ARG(); |
| 225 | vid = atoi(*argv); |
Cong Wang | 9dca676 | 2012-12-11 22:23:09 +0000 | [diff] [blame] | 226 | } else { |
Cong Wang | 9dca676 | 2012-12-11 22:23:09 +0000 | [diff] [blame] | 227 | if (matches(*argv, "help") == 0) |
| 228 | usage(); |
| 229 | } |
| 230 | argc--; argv++; |
| 231 | } |
| 232 | |
| 233 | if (d == NULL || grp == NULL || p == NULL) { |
| 234 | fprintf(stderr, "Device, group address and port name are required arguments.\n"); |
Roopa Prabhu | 42ecedd | 2015-03-17 19:26:32 -0700 | [diff] [blame] | 235 | return -1; |
Cong Wang | 9dca676 | 2012-12-11 22:23:09 +0000 | [diff] [blame] | 236 | } |
| 237 | |
| 238 | req.bpm.ifindex = ll_name_to_index(d); |
| 239 | if (req.bpm.ifindex == 0) { |
| 240 | fprintf(stderr, "Cannot find device \"%s\"\n", d); |
| 241 | return -1; |
| 242 | } |
| 243 | |
| 244 | entry.ifindex = ll_name_to_index(p); |
| 245 | if (entry.ifindex == 0) { |
| 246 | fprintf(stderr, "Cannot find device \"%s\"\n", p); |
| 247 | return -1; |
| 248 | } |
| 249 | |
| 250 | if (!inet_pton(AF_INET, grp, &entry.addr.u.ip4)) { |
| 251 | if (!inet_pton(AF_INET6, grp, &entry.addr.u.ip6)) { |
| 252 | fprintf(stderr, "Invalid address \"%s\"\n", grp); |
| 253 | return -1; |
| 254 | } else |
| 255 | entry.addr.proto = htons(ETH_P_IPV6); |
| 256 | } else |
| 257 | entry.addr.proto = htons(ETH_P_IP); |
| 258 | |
Nikolay Aleksandrov | 6aac861 | 2015-07-15 08:45:20 -0700 | [diff] [blame] | 259 | entry.vid = vid; |
Cong Wang | 9dca676 | 2012-12-11 22:23:09 +0000 | [diff] [blame] | 260 | addattr_l(&req.n, sizeof(req), MDBA_SET_ENTRY, &entry, sizeof(entry)); |
| 261 | |
Stephen Hemminger | c079e12 | 2015-05-27 12:26:14 -0700 | [diff] [blame] | 262 | if (rtnl_talk(&rth, &req.n, NULL, 0) < 0) |
Roopa Prabhu | 42ecedd | 2015-03-17 19:26:32 -0700 | [diff] [blame] | 263 | return -1; |
Cong Wang | 9dca676 | 2012-12-11 22:23:09 +0000 | [diff] [blame] | 264 | |
| 265 | return 0; |
| 266 | } |
| 267 | |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 268 | int do_mdb(int argc, char **argv) |
| 269 | { |
| 270 | ll_init_map(&rth); |
| 271 | |
| 272 | if (argc > 0) { |
Cong Wang | 9dca676 | 2012-12-11 22:23:09 +0000 | [diff] [blame] | 273 | if (matches(*argv, "add") == 0) |
| 274 | return mdb_modify(RTM_NEWMDB, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1); |
| 275 | if (matches(*argv, "delete") == 0) |
| 276 | return mdb_modify(RTM_DELMDB, 0, argc-1, argv+1); |
| 277 | |
Cong Wang | e06c7f7 | 2012-12-11 16:46:22 -0800 | [diff] [blame] | 278 | if (matches(*argv, "show") == 0 || |
| 279 | matches(*argv, "lst") == 0 || |
| 280 | matches(*argv, "list") == 0) |
| 281 | return mdb_show(argc-1, argv+1); |
| 282 | if (matches(*argv, "help") == 0) |
| 283 | usage(); |
| 284 | } else |
| 285 | return mdb_show(0, NULL); |
| 286 | |
| 287 | fprintf(stderr, "Command \"%s\" is unknown, try \"bridge mdb help\".\n", *argv); |
| 288 | exit(-1); |
| 289 | } |