utilities/ovs-dpctl.c

   1 /*
   2  * Copyright (c) 2008, 2009, 2010 Nicira Networks.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <config.h>
  18 #include <arpa/inet.h>
  19 #include <errno.h>
  20 #include <getopt.h>
  21 #include <inttypes.h>
  22 #include <net/if.h>
  23 #include <netinet/in.h>
  24 #include <signal.h>
  25 #include <stdarg.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <unistd.h>
  29 #include <sys/stat.h>
  30 #include <sys/time.h>
  31
  32 #include "command-line.h"
  33 #include "compiler.h"
  34 #include "dirs.h"
  35 #include "dpif.h"
  36 #include "dynamic-string.h"
  37 #include "netdev.h"
  38 #include "odp-util.h"
  39 #include "svec.h"
  40 #include "timeval.h"
  41 #include "util.h"
  42
  43 #include "vlog.h"
  44 #define THIS_MODULE VLM_dpctl
  45
  46 static const struct command all_commands[];
  47
  48 static void usage(void) NO_RETURN;
  49 static void parse_options(int argc, char *argv[]);
  50
  51 int
  52 main(int argc, char *argv[])
  53 {
  54     set_program_name(argv[0]);
  55     time_init();
  56     vlog_init();
  57     parse_options(argc, argv);
  58     signal(SIGPIPE, SIG_IGN);
  59     run_command(argc - optind, argv + optind, all_commands);
  60     return 0;
  61 }
  62
  63 static void
  64 parse_options(int argc, char *argv[])
  65 {
  66     enum {
  67         OPT_DUMMY = UCHAR_MAX + 1,
  68         VLOG_OPTION_ENUMS
  69     };
  70     static struct option long_options[] = {
  71         {"timeout", required_argument, 0, 't'},
  72         {"help", no_argument, 0, 'h'},
  73         {"version", no_argument, 0, 'V'},
  74         VLOG_LONG_OPTIONS,
  75         {0, 0, 0, 0},
  76     };
  77     char *short_options = long_options_to_short_options(long_options);
  78
  79     for (;;) {
  80         unsigned long int timeout;
  81         int c;
  82
  83         c = getopt_long(argc, argv, short_options, long_options, NULL);
  84         if (c == -1) {
  85             break;
  86         }
  87
  88         switch (c) {
  89         case 't':
  90             timeout = strtoul(optarg, NULL, 10);
  91             if (timeout <= 0) {
  92                 ovs_fatal(0, "value %s on -t or --timeout is not at least 1",
  93                           optarg);
  94             } else {
  95                 time_alarm(timeout);
  96             }
  97             break;
  98
  99         case 'h':
 100             usage();
 101
 102         case 'V':
 103             OVS_PRINT_VERSION(0, 0);
 104             exit(EXIT_SUCCESS);
 105
 106         VLOG_OPTION_HANDLERS
 107
 108         case '?':
 109             exit(EXIT_FAILURE);
 110
 111         default:
 112             abort();
 113         }
 114     }
 115     free(short_options);
 116 }
 117
 118 static void
 119 usage(void)
 120 {
 121     printf("%s: Open vSwitch datapath management utility\n"
 122            "usage: %s [OPTIONS] COMMAND [ARG...]\n"
 123            "  add-dp DP [IFACE...]     add new datapath DP (with IFACEs)\n"
 124            "  del-dp DP                delete local datapath DP\n"
 125            "  add-if DP IFACE...       add each IFACE as a port on DP\n"
 126            "  del-if DP IFACE...       delete each IFACE from DP\n"
 127            "  dump-dps                 display names of all datapaths\n"
 128            "  show                     show basic info on all datapaths\n"
 129            "  show DP...               show basic info on each DP\n"
 130            "  dump-flows DP            display flows in DP\n"
 131            "  del-flows DP             delete all flows from DP\n"
 132            "  dump-groups DP           display port groups in DP\n",
 133            program_name, program_name);
 134     vlog_usage();
 135     printf("\nOther options:\n"
 136            "  -t, --timeout=SECS          give up after SECS seconds\n"
 137            "  -h, --help                  display this help message\n"
 138            "  -V, --version               display version information\n");
 139     exit(EXIT_SUCCESS);
 140 }
 141
 142 static void run(int retval, const char *message, ...)
 143     PRINTF_FORMAT(2, 3);
 144
 145 static void run(int retval, const char *message, ...)
 146 {
 147     if (retval) {
 148         va_list args;
 149
 150         fprintf(stderr, "%s: ", program_name);
 151         va_start(args, message);
 152         vfprintf(stderr, message, args);
 153         va_end(args);
 154         if (retval == EOF) {
 155             fputs(": unexpected end of file\n", stderr);
 156         } else {
 157             fprintf(stderr, ": %s\n", strerror(retval));
 158         }
 159
 160         exit(EXIT_FAILURE);
 161     }
 162 }
 163 \f
 164 static void do_add_if(int argc, char *argv[]);
 165
 166 static int if_up(const char *netdev_name)
 167 {
 168     struct netdev *netdev;
 169     int retval;
 170
 171     retval = netdev_open_default(netdev_name, &netdev);
 172     if (!retval) {
 173         retval = netdev_turn_flags_on(netdev, NETDEV_UP, true);
 174         netdev_close(netdev);
 175     }
 176     return retval;
 177 }
 178
 179 static int
 180 parsed_dpif_open(const char *arg_, bool create, struct dpif **dpifp)
 181 {
 182     int result;
 183     char *name, *type;
 184
 185     dp_parse_name(arg_, &name, &type);
 186
 187     if (create) {
 188         result = dpif_create(name, type, dpifp);
 189     } else {
 190         result = dpif_open(name, type, dpifp);
 191     }
 192
 193     free(name);
 194     free(type);
 195     return result;
 196 }
 197
 198 static void
 199 do_add_dp(int argc OVS_UNUSED, char *argv[])
 200 {
 201     struct dpif *dpif;
 202     run(parsed_dpif_open(argv[1], true, &dpif), "add_dp");
 203     dpif_close(dpif);
 204     if (argc > 2) {
 205         do_add_if(argc, argv);
 206     }
 207 }
 208
 209 static void
 210 do_del_dp(int argc OVS_UNUSED, char *argv[])
 211 {
 212     struct dpif *dpif;
 213     run(parsed_dpif_open(argv[1], false, &dpif), "opening datapath");
 214     run(dpif_delete(dpif), "del_dp");
 215     dpif_close(dpif);
 216 }
 217
 218 static int
 219 compare_ports(const void *a_, const void *b_)
 220 {
 221     const struct odp_port *a = a_;
 222     const struct odp_port *b = b_;
 223     return a->port < b->port ? -1 : a->port > b->port;
 224 }
 225
 226 static void
 227 query_ports(struct dpif *dpif, struct odp_port **ports, size_t *n_ports)
 228 {
 229     run(dpif_port_list(dpif, ports, n_ports), "listing ports");
 230     qsort(*ports, *n_ports, sizeof **ports, compare_ports);
 231 }
 232
 233 static void
 234 do_add_if(int argc OVS_UNUSED, char *argv[])
 235 {
 236     bool failure = false;
 237     struct dpif *dpif;
 238     int i;
 239
 240     run(parsed_dpif_open(argv[1], false, &dpif), "opening datapath");
 241     for (i = 2; i < argc; i++) {
 242         char *save_ptr = NULL;
 243         char *devname, *suboptions;
 244         int flags = 0;
 245         int error;
 246
 247         devname = strtok_r(argv[i], ",", &save_ptr);
 248         if (!devname) {
 249             ovs_error(0, "%s is not a valid network device name", argv[i]);
 250             continue;
 251         }
 252
 253         suboptions = strtok_r(NULL, "", &save_ptr);
 254         if (suboptions) {
 255             enum {
 256                 AP_INTERNAL
 257             };
 258             static char *options[] = {
 259                 "internal"
 260             };
 261
 262             while (*suboptions != '\0') {
 263                 char *value;
 264
 265                 switch (getsubopt(&suboptions, options, &value)) {
 266                 case AP_INTERNAL:
 267                     flags |= ODP_PORT_INTERNAL;
 268                     break;
 269
 270                 default:
 271                     ovs_error(0, "unknown suboption '%s'", value);
 272                     break;
 273                 }
 274             }
 275         }
 276
 277         error = dpif_port_add(dpif, devname, flags, NULL);
 278         if (error) {
 279             ovs_error(error, "adding %s to %s failed", devname, argv[1]);
 280             failure = true;
 281         } else if (if_up(devname)) {
 282             failure = true;
 283         }
 284     }
 285     dpif_close(dpif);
 286     if (failure) {
 287         exit(EXIT_FAILURE);
 288     }
 289 }
 290
 291 static bool
 292 get_port_number(struct dpif *dpif, const char *name, uint16_t *port)
 293 {
 294     struct odp_port *ports;
 295     size_t n_ports;
 296     size_t i;
 297
 298     query_ports(dpif, &ports, &n_ports);
 299     for (i = 0; i < n_ports; i++) {
 300         if (!strcmp(name, ports[i].devname)) {
 301             *port = ports[i].port;
 302             free(ports);
 303             return true;
 304         }
 305     }
 306     free(ports);
 307     ovs_error(0, "no port named %s", name);
 308     return false;
 309 }
 310
 311 static void
 312 do_del_if(int argc OVS_UNUSED, char *argv[])
 313 {
 314     bool failure = false;
 315     struct dpif *dpif;
 316     int i;
 317
 318     run(parsed_dpif_open(argv[1], false, &dpif), "opening datapath");
 319     for (i = 2; i < argc; i++) {
 320         const char *name = argv[i];
 321         uint16_t port;
 322         int error;
 323
 324         if (!name[strspn(name, "0123456789")]) {
 325             port = atoi(name);
 326         } else if (!get_port_number(dpif, name, &port)) {
 327             failure = true;
 328             continue;
 329         }
 330
 331         error = dpif_port_del(dpif, port);
 332         if (error) {
 333             ovs_error(error, "deleting port %s from %s failed", name, argv[1]);
 334             failure = true;
 335         }
 336     }
 337     dpif_close(dpif);
 338     if (failure) {
 339         exit(EXIT_FAILURE);
 340     }
 341 }
 342
 343 static void
 344 show_dpif(struct dpif *dpif)
 345 {
 346     struct odp_port *ports;
 347     struct odp_stats stats;
 348     size_t n_ports;
 349     size_t i;
 350
 351     printf("%s:\n", dpif_name(dpif));
 352     if (!dpif_get_dp_stats(dpif, &stats)) {
 353         printf("\tflows: cur:%"PRIu32", soft-max:%"PRIu32", "
 354                "hard-max:%"PRIu32"\n",
 355                stats.n_flows, stats.cur_capacity, stats.max_capacity);
 356         printf("\tports: cur:%"PRIu32", max:%"PRIu32"\n",
 357                stats.n_ports, stats.max_ports);
 358         printf("\tgroups: max:%"PRIu16"\n", stats.max_groups);
 359         printf("\tlookups: frags:%llu, hit:%llu, missed:%llu, lost:%llu\n",
 360                (unsigned long long int) stats.n_frags,
 361                (unsigned long long int) stats.n_hit,
 362                (unsigned long long int) stats.n_missed,
 363                (unsigned long long int) stats.n_lost);
 364         printf("\tqueues: max-miss:%"PRIu16", max-action:%"PRIu16"\n",
 365                stats.max_miss_queue, stats.max_action_queue);
 366     }
 367     query_ports(dpif, &ports, &n_ports);
 368     for (i = 0; i < n_ports; i++) {
 369         printf("\tport %u: %s", ports[i].port, ports[i].devname);
 370         if (ports[i].flags & ODP_PORT_INTERNAL) {
 371             printf(" (internal)");
 372         }
 373         printf("\n");
 374     }
 375     free(ports);
 376     dpif_close(dpif);
 377 }
 378
 379 static void
 380 do_show(int argc, char *argv[])
 381 {
 382     bool failure = false;
 383     if (argc > 1) {
 384         int i;
 385         for (i = 1; i < argc; i++) {
 386             const char *name = argv[i];
 387             struct dpif *dpif;
 388             int error;
 389
 390             error = parsed_dpif_open(name, false, &dpif);
 391             if (!error) {
 392                 show_dpif(dpif);
 393             } else {
 394                 ovs_error(error, "opening datapath %s failed", name);
 395                 failure = true;
 396             }
 397         }
 398     } else {
 399         unsigned int i;
 400         for (i = 0; i < ODP_MAX; i++) {
 401             char name[128];
 402             struct dpif *dpif;
 403             int error;
 404
 405             sprintf(name, "dp%u", i);
 406             error = parsed_dpif_open(name, false, &dpif);
 407             if (!error) {
 408                 show_dpif(dpif);
 409             } else if (error != ENODEV) {
 410                 ovs_error(error, "opening datapath %s failed", name);
 411                 failure = true;
 412             }
 413         }
 414     }
 415     if (failure) {
 416         exit(EXIT_FAILURE);
 417     }
 418 }
 419
 420 static void
 421 do_dump_dps(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
 422 {
 423     struct svec dpif_names, dpif_types;
 424     unsigned int i;
 425     int error = 0;
 426
 427     svec_init(&dpif_names);
 428     svec_init(&dpif_types);
 429     dp_enumerate_types(&dpif_types);
 430
 431     for (i = 0; i < dpif_types.n; i++) {
 432         unsigned int j;
 433         int retval;
 434
 435         retval = dp_enumerate_names(dpif_types.names[i], &dpif_names);
 436         if (retval) {
 437             error = retval;
 438         }
 439
 440         for (j = 0; j < dpif_names.n; j++) {
 441             struct dpif *dpif;
 442             if (!dpif_open(dpif_names.names[j], dpif_types.names[i], &dpif)) {
 443                 printf("%s\n", dpif_name(dpif));
 444                 dpif_close(dpif);
 445             }
 446         }
 447     }
 448
 449     svec_destroy(&dpif_names);
 450     svec_destroy(&dpif_types);
 451     if (error) {
 452         exit(EXIT_FAILURE);
 453     }
 454 }
 455
 456 static void
 457 do_dump_flows(int argc OVS_UNUSED, char *argv[])
 458 {
 459     struct odp_flow *flows;
 460     struct dpif *dpif;
 461     size_t n_flows;
 462     struct ds ds;
 463     size_t i;
 464
 465     run(parsed_dpif_open(argv[1], false, &dpif), "opening datapath");
 466     run(dpif_flow_list_all(dpif, &flows, &n_flows), "listing all flows");
 467
 468     ds_init(&ds);
 469     for (i = 0; i < n_flows; i++) {
 470         struct odp_flow *f = &flows[i];
 471         enum { MAX_ACTIONS = 4096 / sizeof(union odp_action) };
 472         union odp_action actions[MAX_ACTIONS];
 473
 474         f->actions = actions;
 475         f->n_actions = MAX_ACTIONS;
 476         dpif_flow_get(dpif, f);
 477
 478         ds_clear(&ds);
 479         format_odp_flow(&ds, f);
 480         printf("%s\n", ds_cstr(&ds));
 481     }
 482     ds_destroy(&ds);
 483     dpif_close(dpif);
 484 }
 485
 486 static void
 487 do_del_flows(int argc OVS_UNUSED, char *argv[])
 488 {
 489     struct dpif *dpif;
 490
 491     run(parsed_dpif_open(argv[1], false, &dpif), "opening datapath");
 492     run(dpif_flow_flush(dpif), "deleting all flows");
 493     dpif_close(dpif);
 494 }
 495
 496 static void
 497 do_dump_groups(int argc OVS_UNUSED, char *argv[])
 498 {
 499     struct odp_stats stats;
 500     struct dpif *dpif;
 501     unsigned int i;
 502
 503     run(parsed_dpif_open(argv[1], false, &dpif), "opening datapath");
 504     run(dpif_get_dp_stats(dpif, &stats), "get datapath stats");
 505     for (i = 0; i < stats.max_groups; i++) {
 506         uint16_t *ports;
 507         size_t n_ports;
 508
 509         if (!dpif_port_group_get(dpif, i, &ports, &n_ports) && n_ports) {
 510             size_t j;
 511
 512             printf("group %u:", i);
 513             for (j = 0; j < n_ports; j++) {
 514                 printf(" %"PRIu16, ports[j]);
 515             }
 516             printf("\n");
 517         }
 518         free(ports);
 519     }
 520     dpif_close(dpif);
 521 }
 522
 523 static void
 524 do_help(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
 525 {
 526     usage();
 527 }
 528
 529 static const struct command all_commands[] = {
 530     { "add-dp", 1, INT_MAX, do_add_dp },
 531     { "del-dp", 1, 1, do_del_dp },
 532     { "add-if", 2, INT_MAX, do_add_if },
 533     { "del-if", 2, INT_MAX, do_del_if },
 534     { "dump-dps", 0, 0, do_dump_dps },
 535     { "show", 0, INT_MAX, do_show },
 536     { "dump-flows", 1, 1, do_dump_flows },
 537     { "del-flows", 1, 1, do_del_flows },
 538     { "dump-groups", 1, 1, do_dump_groups },
 539     { "help", 0, INT_MAX, do_help },
 540     { NULL, 0, 0, NULL },
 541 };