lib/ofp-print.c

   1 /*
   2  * Copyright (c) 2008, 2009, 2010, 2011, 2012 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 "ofp-print.h"
  19
  20 #include <errno.h>
  21 #include <inttypes.h>
  22 #include <sys/types.h>
  23 #include <netinet/in.h>
  24 #include <sys/wait.h>
  25 #include <stdarg.h>
  26 #include <stdlib.h>
  27 #include <ctype.h>
  28
  29 #include "bundle.h"
  30 #include "byte-order.h"
  31 #include "compiler.h"
  32 #include "dynamic-string.h"
  33 #include "flow.h"
  34 #include "learn.h"
  35 #include "multipath.h"
  36 #include "meta-flow.h"
  37 #include "nx-match.h"
  38 #include "ofp-errors.h"
  39 #include "ofp-util.h"
  40 #include "ofpbuf.h"
  41 #include "openflow/openflow.h"
  42 #include "openflow/nicira-ext.h"
  43 #include "packets.h"
  44 #include "pcap.h"
  45 #include "type-props.h"
  46 #include "unaligned.h"
  47 #include "util.h"
  48
  49 static void ofp_print_queue_name(struct ds *string, uint32_t port);
  50 static void ofp_print_error(struct ds *, enum ofperr);
  51
  52
  53 /* Returns a string that represents the contents of the Ethernet frame in the
  54  * 'len' bytes starting at 'data'.  The caller must free the returned string.*/
  55 char *
  56 ofp_packet_to_string(const void *data, size_t len)
  57 {
  58     struct ds ds = DS_EMPTY_INITIALIZER;
  59     struct ofpbuf buf;
  60     struct flow flow;
  61
  62     ofpbuf_use_const(&buf, data, len);
  63     flow_extract(&buf, 0, 0, 0, &flow);
  64     flow_format(&ds, &flow);
  65
  66     if (buf.l7) {
  67         if (flow.nw_proto == IPPROTO_TCP) {
  68             struct tcp_header *th = buf.l4;
  69             ds_put_format(&ds, " tcp_csum:%"PRIx16,
  70                           ntohs(th->tcp_csum));
  71         } else if (flow.nw_proto == IPPROTO_UDP) {
  72             struct udp_header *uh = buf.l4;
  73             ds_put_format(&ds, " udp_csum:%"PRIx16,
  74                           ntohs(uh->udp_csum));
  75         }
  76     }
  77
  78     ds_put_char(&ds, '\n');
  79
  80     return ds_cstr(&ds);
  81 }
  82
  83 static void
  84 ofp_print_packet_in(struct ds *string, const struct ofp_header *oh,
  85                     int verbosity)
  86 {
  87     struct ofputil_packet_in pin;
  88     int error;
  89     int i;
  90
  91     error = ofputil_decode_packet_in(&pin, oh);
  92     if (error) {
  93         ofp_print_error(string, error);
  94         return;
  95     }
  96
  97     if (pin.table_id) {
  98         ds_put_format(string, " table_id=%"PRIu8, pin.table_id);
  99     }
 100
 101     if (pin.cookie) {
 102         ds_put_format(string, " cookie=0x%"PRIx64, ntohll(pin.cookie));
 103     }
 104
 105     ds_put_format(string, " total_len=%"PRIu16" in_port=", pin.total_len);
 106     ofputil_format_port(pin.fmd.in_port, string);
 107
 108     if (pin.fmd.tun_id_mask) {
 109         ds_put_format(string, " tun_id=0x%"PRIx64, ntohll(pin.fmd.tun_id));
 110         if (pin.fmd.tun_id_mask != htonll(UINT64_MAX)) {
 111             ds_put_format(string, "/0x%"PRIx64, ntohll(pin.fmd.tun_id_mask));
 112         }
 113     }
 114
 115     for (i = 0; i < FLOW_N_REGS; i++) {
 116         if (pin.fmd.reg_masks[i]) {
 117             ds_put_format(string, " reg%d=0x%"PRIx32, i, pin.fmd.regs[i]);
 118             if (pin.fmd.reg_masks[i] != UINT32_MAX) {
 119                 ds_put_format(string, "/0x%"PRIx32, pin.fmd.reg_masks[i]);
 120             }
 121         }
 122     }
 123
 124     ds_put_format(string, " (via %s)",
 125                   ofputil_packet_in_reason_to_string(pin.reason));
 126
 127     ds_put_format(string, " data_len=%zu", pin.packet_len);
 128     if (pin.buffer_id == UINT32_MAX) {
 129         ds_put_format(string, " (unbuffered)");
 130         if (pin.total_len != pin.packet_len) {
 131             ds_put_format(string, " (***total_len != data_len***)");
 132         }
 133     } else {
 134         ds_put_format(string, " buffer=0x%08"PRIx32, pin.buffer_id);
 135         if (pin.total_len < pin.packet_len) {
 136             ds_put_format(string, " (***total_len < data_len***)");
 137         }
 138     }
 139     ds_put_char(string, '\n');
 140
 141     if (verbosity > 0) {
 142         char *packet = ofp_packet_to_string(pin.packet, pin.packet_len);
 143         ds_put_cstr(string, packet);
 144         free(packet);
 145     }
 146 }
 147
 148 static void
 149 print_note(struct ds *string, const struct nx_action_note *nan)
 150 {
 151     size_t len;
 152     size_t i;
 153
 154     ds_put_cstr(string, "note:");
 155     len = ntohs(nan->len) - offsetof(struct nx_action_note, note);
 156     for (i = 0; i < len; i++) {
 157         if (i) {
 158             ds_put_char(string, '.');
 159         }
 160         ds_put_format(string, "%02"PRIx8, nan->note[i]);
 161     }
 162 }
 163
 164 static void
 165 ofp_print_action(struct ds *s, const union ofp_action *a,
 166                  enum ofputil_action_code code)
 167 {
 168     const struct ofp_action_enqueue *oae;
 169     const struct ofp_action_dl_addr *oada;
 170     const struct nx_action_set_tunnel64 *nast64;
 171     const struct nx_action_set_tunnel *nast;
 172     const struct nx_action_set_queue *nasq;
 173     const struct nx_action_resubmit *nar;
 174     const struct nx_action_reg_move *move;
 175     const struct nx_action_reg_load *load;
 176     const struct nx_action_multipath *nam;
 177     const struct nx_action_autopath *naa;
 178     const struct nx_action_output_reg *naor;
 179     const struct nx_action_fin_timeout *naft;
 180     const struct nx_action_controller *nac;
 181     struct mf_subfield subfield;
 182     uint16_t port;
 183
 184     switch (code) {
 185     case OFPUTIL_OFPAT_OUTPUT:
 186         port = ntohs(a->output.port);
 187         if (port < OFPP_MAX) {
 188             ds_put_format(s, "output:%"PRIu16, port);
 189         } else {
 190             ofputil_format_port(port, s);
 191             if (port == OFPP_CONTROLLER) {
 192                 if (a->output.max_len != htons(0)) {
 193                     ds_put_format(s, ":%"PRIu16, ntohs(a->output.max_len));
 194                 } else {
 195                     ds_put_cstr(s, ":all");
 196                 }
 197             }
 198         }
 199         break;
 200
 201     case OFPUTIL_OFPAT_ENQUEUE:
 202         oae = (const struct ofp_action_enqueue *) a;
 203         ds_put_format(s, "enqueue:");
 204         ofputil_format_port(ntohs(oae->port), s);
 205         ds_put_format(s, "q%"PRIu32, ntohl(oae->queue_id));
 206         break;
 207
 208     case OFPUTIL_OFPAT_SET_VLAN_VID:
 209         ds_put_format(s, "mod_vlan_vid:%"PRIu16,
 210                       ntohs(a->vlan_vid.vlan_vid));
 211         break;
 212
 213     case OFPUTIL_OFPAT_SET_VLAN_PCP:
 214         ds_put_format(s, "mod_vlan_pcp:%"PRIu8, a->vlan_pcp.vlan_pcp);
 215         break;
 216
 217     case OFPUTIL_OFPAT_STRIP_VLAN:
 218         ds_put_cstr(s, "strip_vlan");
 219         break;
 220
 221     case OFPUTIL_OFPAT_SET_DL_SRC:
 222         oada = (const struct ofp_action_dl_addr *) a;
 223         ds_put_format(s, "mod_dl_src:"ETH_ADDR_FMT,
 224                       ETH_ADDR_ARGS(oada->dl_addr));
 225         break;
 226
 227     case OFPUTIL_OFPAT_SET_DL_DST:
 228         oada = (const struct ofp_action_dl_addr *) a;
 229         ds_put_format(s, "mod_dl_dst:"ETH_ADDR_FMT,
 230                       ETH_ADDR_ARGS(oada->dl_addr));
 231         break;
 232
 233     case OFPUTIL_OFPAT_SET_NW_SRC:
 234         ds_put_format(s, "mod_nw_src:"IP_FMT, IP_ARGS(&a->nw_addr.nw_addr));
 235         break;
 236
 237     case OFPUTIL_OFPAT_SET_NW_DST:
 238         ds_put_format(s, "mod_nw_dst:"IP_FMT, IP_ARGS(&a->nw_addr.nw_addr));
 239         break;
 240
 241     case OFPUTIL_OFPAT_SET_NW_TOS:
 242         ds_put_format(s, "mod_nw_tos:%d", a->nw_tos.nw_tos);
 243         break;
 244
 245     case OFPUTIL_OFPAT_SET_TP_SRC:
 246         ds_put_format(s, "mod_tp_src:%d", ntohs(a->tp_port.tp_port));
 247         break;
 248
 249     case OFPUTIL_OFPAT_SET_TP_DST:
 250         ds_put_format(s, "mod_tp_dst:%d", ntohs(a->tp_port.tp_port));
 251         break;
 252
 253     case OFPUTIL_NXAST_RESUBMIT:
 254         nar = (struct nx_action_resubmit *)a;
 255         ds_put_format(s, "resubmit:");
 256         ofputil_format_port(ntohs(nar->in_port), s);
 257         break;
 258
 259     case OFPUTIL_NXAST_RESUBMIT_TABLE:
 260         nar = (struct nx_action_resubmit *)a;
 261         ds_put_format(s, "resubmit(");
 262         if (nar->in_port != htons(OFPP_IN_PORT)) {
 263             ofputil_format_port(ntohs(nar->in_port), s);
 264         }
 265         ds_put_char(s, ',');
 266         if (nar->table != 255) {
 267             ds_put_format(s, "%"PRIu8, nar->table);
 268         }
 269         ds_put_char(s, ')');
 270         break;
 271
 272     case OFPUTIL_NXAST_SET_TUNNEL:
 273         nast = (struct nx_action_set_tunnel *)a;
 274         ds_put_format(s, "set_tunnel:%#"PRIx32, ntohl(nast->tun_id));
 275         break;
 276
 277     case OFPUTIL_NXAST_SET_QUEUE:
 278         nasq = (struct nx_action_set_queue *)a;
 279         ds_put_format(s, "set_queue:%u", ntohl(nasq->queue_id));
 280         break;
 281
 282     case OFPUTIL_NXAST_POP_QUEUE:
 283         ds_put_cstr(s, "pop_queue");
 284         break;
 285
 286     case OFPUTIL_NXAST_NOTE:
 287         print_note(s, (const struct nx_action_note *) a);
 288         break;
 289
 290     case OFPUTIL_NXAST_REG_MOVE:
 291         move = (const struct nx_action_reg_move *) a;
 292         nxm_format_reg_move(move, s);
 293         break;
 294
 295     case OFPUTIL_NXAST_REG_LOAD:
 296         load = (const struct nx_action_reg_load *) a;
 297         nxm_format_reg_load(load, s);
 298         break;
 299
 300     case OFPUTIL_NXAST_SET_TUNNEL64:
 301         nast64 = (const struct nx_action_set_tunnel64 *) a;
 302         ds_put_format(s, "set_tunnel64:%#"PRIx64,
 303                       ntohll(nast64->tun_id));
 304         break;
 305
 306     case OFPUTIL_NXAST_MULTIPATH:
 307         nam = (const struct nx_action_multipath *) a;
 308         multipath_format(nam, s);
 309         break;
 310
 311     case OFPUTIL_NXAST_AUTOPATH:
 312         naa = (const struct nx_action_autopath *)a;
 313         ds_put_format(s, "autopath(%u,", ntohl(naa->id));
 314         nxm_decode(&subfield, naa->dst, naa->ofs_nbits);
 315         mf_format_subfield(&subfield, s);
 316         ds_put_char(s, ')');
 317         break;
 318
 319     case OFPUTIL_NXAST_BUNDLE:
 320     case OFPUTIL_NXAST_BUNDLE_LOAD:
 321         bundle_format((const struct nx_action_bundle *) a, s);
 322         break;
 323
 324     case OFPUTIL_NXAST_OUTPUT_REG:
 325         naor = (const struct nx_action_output_reg *) a;
 326         ds_put_cstr(s, "output:");
 327         nxm_decode(&subfield, naor->src, naor->ofs_nbits);
 328         mf_format_subfield(&subfield, s);
 329         break;
 330
 331     case OFPUTIL_NXAST_LEARN:
 332         learn_format((const struct nx_action_learn *) a, s);
 333         break;
 334
 335     case OFPUTIL_NXAST_DEC_TTL:
 336         ds_put_cstr(s, "dec_ttl");
 337         break;
 338
 339     case OFPUTIL_NXAST_EXIT:
 340         ds_put_cstr(s, "exit");
 341         break;
 342
 343     case OFPUTIL_NXAST_FIN_TIMEOUT:
 344         naft = (const struct nx_action_fin_timeout *) a;
 345         ds_put_cstr(s, "fin_timeout(");
 346         if (naft->fin_idle_timeout) {
 347             ds_put_format(s, "idle_timeout=%"PRIu16",",
 348                           ntohs(naft->fin_idle_timeout));
 349         }
 350         if (naft->fin_hard_timeout) {
 351             ds_put_format(s, "hard_timeout=%"PRIu16",",
 352                           ntohs(naft->fin_hard_timeout));
 353         }
 354         ds_chomp(s, ',');
 355         ds_put_char(s, ')');
 356         break;
 357
 358     case OFPUTIL_NXAST_CONTROLLER:
 359         nac = (const struct nx_action_controller *) a;
 360         ds_put_cstr(s, "controller(");
 361         if (nac->reason != OFPR_ACTION) {
 362             ds_put_format(s, "reason=%s,",
 363                           ofputil_packet_in_reason_to_string(nac->reason));
 364         }
 365         if (nac->max_len != htons(UINT16_MAX)) {
 366             ds_put_format(s, "max_len=%"PRIu16",", ntohs(nac->max_len));
 367         }
 368         if (nac->controller_id != htons(0)) {
 369             ds_put_format(s, "id=%"PRIu16",", ntohs(nac->controller_id));
 370         }
 371         ds_chomp(s, ',');
 372         ds_put_char(s, ')');
 373         break;
 374
 375     default:
 376         break;
 377     }
 378 }
 379
 380 void
 381 ofp_print_actions(struct ds *string, const union ofp_action *actions,
 382                   size_t n_actions)
 383 {
 384     const union ofp_action *a;
 385     size_t left;
 386
 387     ds_put_cstr(string, "actions=");
 388     if (!n_actions) {
 389         ds_put_cstr(string, "drop");
 390     }
 391
 392     OFPUTIL_ACTION_FOR_EACH (a, left, actions, n_actions) {
 393         int code = ofputil_decode_action(a);
 394         if (code >= 0) {
 395             if (a != actions) {
 396                 ds_put_cstr(string, ",");
 397             }
 398             ofp_print_action(string, a, code);
 399         } else {
 400             ofp_print_error(string, -code);
 401         }
 402     }
 403     if (left > 0) {
 404         ds_put_format(string, " ***%zu leftover bytes following actions",
 405                       left * sizeof *a);
 406     }
 407 }
 408
 409 static void
 410 ofp_print_packet_out(struct ds *string, const struct ofp_packet_out *opo,
 411                      int verbosity)
 412 {
 413     struct ofputil_packet_out po;
 414     enum ofperr error;
 415
 416     error = ofputil_decode_packet_out(&po, opo);
 417     if (error) {
 418         ofp_print_error(string, error);
 419         return;
 420     }
 421
 422     ds_put_cstr(string, " in_port=");
 423     ofputil_format_port(po.in_port, string);
 424
 425     ds_put_char(string, ' ');
 426     ofp_print_actions(string, po.actions, po.n_actions);
 427
 428     if (po.buffer_id == UINT32_MAX) {
 429         ds_put_format(string, " data_len=%zu", po.packet_len);
 430         if (verbosity > 0 && po.packet_len > 0) {
 431             char *packet = ofp_packet_to_string(po.packet, po.packet_len);
 432             ds_put_char(string, '\n');
 433             ds_put_cstr(string, packet);
 434             free(packet);
 435         }
 436     } else {
 437         ds_put_format(string, " buffer=0x%08"PRIx32, po.buffer_id);
 438     }
 439     ds_put_char(string, '\n');
 440 }
 441
 442 /* qsort comparison function. */
 443 static int
 444 compare_ports(const void *a_, const void *b_)
 445 {
 446     const struct ofp_phy_port *a = a_;
 447     const struct ofp_phy_port *b = b_;
 448     uint16_t ap = ntohs(a->port_no);
 449     uint16_t bp = ntohs(b->port_no);
 450
 451     return ap < bp ? -1 : ap > bp;
 452 }
 453
 454 struct bit_name {
 455     uint32_t bit;
 456     const char *name;
 457 };
 458
 459 static void
 460 ofp_print_bit_names(struct ds *string, uint32_t bits,
 461                     const struct bit_name bit_names[])
 462 {
 463     int n = 0;
 464
 465     if (!bits) {
 466         ds_put_cstr(string, "0");
 467         return;
 468     }
 469
 470     for (; bits && bit_names->name; bit_names++) {
 471         if (bits & bit_names->bit) {
 472             if (n++) {
 473                 ds_put_char(string, ' ');
 474             }
 475             ds_put_cstr(string, bit_names->name);
 476             bits &= ~bit_names->bit;
 477         }
 478     }
 479
 480     if (bits) {
 481         if (n++) {
 482             ds_put_char(string, ' ');
 483         }
 484         ds_put_format(string, "0x%"PRIx32, bits);
 485     }
 486 }
 487
 488 static void
 489 ofp_print_port_features(struct ds *string, uint32_t features)
 490 {
 491     static const struct bit_name feature_bits[] = {
 492         { OFPPF_10MB_HD,    "10MB-HD" },
 493         { OFPPF_10MB_FD,    "10MB-FD" },
 494         { OFPPF_100MB_HD,   "100MB-HD" },
 495         { OFPPF_100MB_FD,   "100MB-FD" },
 496         { OFPPF_1GB_HD,     "1GB-HD" },
 497         { OFPPF_1GB_FD,     "1GB-FD" },
 498         { OFPPF_10GB_FD,    "10GB-FD" },
 499         { OFPPF_COPPER,     "COPPER" },
 500         { OFPPF_FIBER,      "FIBER" },
 501         { OFPPF_AUTONEG,    "AUTO_NEG" },
 502         { OFPPF_PAUSE,      "AUTO_PAUSE" },
 503         { OFPPF_PAUSE_ASYM, "AUTO_PAUSE_ASYM" },
 504         { 0,                NULL },
 505     };
 506
 507     ofp_print_bit_names(string, features, feature_bits);
 508     ds_put_char(string, '\n');
 509 }
 510
 511 static void
 512 ofp_print_port_config(struct ds *string, uint32_t config)
 513 {
 514     static const struct bit_name config_bits[] = {
 515         { OFPPC_PORT_DOWN,    "PORT_DOWN" },
 516         { OFPPC_NO_STP,       "NO_STP" },
 517         { OFPPC_NO_RECV,      "NO_RECV" },
 518         { OFPPC_NO_RECV_STP,  "NO_RECV_STP" },
 519         { OFPPC_NO_FLOOD,     "NO_FLOOD" },
 520         { OFPPC_NO_FWD,       "NO_FWD" },
 521         { OFPPC_NO_PACKET_IN, "NO_PACKET_IN" },
 522         { 0,                  NULL },
 523     };
 524
 525     ofp_print_bit_names(string, config, config_bits);
 526     ds_put_char(string, '\n');
 527 }
 528
 529 static void
 530 ofp_print_port_state(struct ds *string, uint32_t state)
 531 {
 532     static const struct bit_name state_bits[] = {
 533         { OFPPS_LINK_DOWN, "LINK_DOWN" },
 534         { 0,               NULL },
 535     };
 536     uint32_t stp_state;
 537
 538     /* The STP state is a 2-bit field so it doesn't fit in with the bitmask
 539      * pattern.  We have to special case it.
 540      *
 541      * OVS doesn't support STP, so this field will always be 0 if we are
 542      * talking to OVS, so we'd always print STP_LISTEN in that case.
 543      * Therefore, we don't print anything at all if the value is STP_LISTEN, to
 544      * avoid confusing users. */
 545     stp_state = state & OFPPS_STP_MASK;
 546     if (stp_state) {
 547         ds_put_cstr(string, (stp_state == OFPPS_STP_LEARN ? "STP_LEARN"
 548                              : stp_state == OFPPS_STP_FORWARD ? "STP_FORWARD"
 549                              : "STP_BLOCK"));
 550         state &= ~OFPPS_STP_MASK;
 551         if (state) {
 552             ofp_print_bit_names(string, state, state_bits);
 553         }
 554     } else {
 555         ofp_print_bit_names(string, state, state_bits);
 556     }
 557     ds_put_char(string, '\n');
 558 }
 559
 560 static void
 561 ofp_print_phy_port(struct ds *string, const struct ofp_phy_port *port)
 562 {
 563     char name[OFP_MAX_PORT_NAME_LEN];
 564     int j;
 565
 566     memcpy(name, port->name, sizeof name);
 567     for (j = 0; j < sizeof name - 1; j++) {
 568         if (!isprint((unsigned char) name[j])) {
 569             break;
 570         }
 571     }
 572     name[j] = '\0';
 573
 574     ds_put_char(string, ' ');
 575     ofputil_format_port(ntohs(port->port_no), string);
 576     ds_put_format(string, "(%s): addr:"ETH_ADDR_FMT"\n",
 577                   name, ETH_ADDR_ARGS(port->hw_addr));
 578
 579     ds_put_cstr(string, "     config:     ");
 580     ofp_print_port_config(string, ntohl(port->config));
 581
 582     ds_put_cstr(string, "     state:      ");
 583     ofp_print_port_state(string, ntohl(port->state));
 584
 585     if (port->curr) {
 586         ds_put_format(string, "     current:    ");
 587         ofp_print_port_features(string, ntohl(port->curr));
 588     }
 589     if (port->advertised) {
 590         ds_put_format(string, "     advertised: ");
 591         ofp_print_port_features(string, ntohl(port->advertised));
 592     }
 593     if (port->supported) {
 594         ds_put_format(string, "     supported:  ");
 595         ofp_print_port_features(string, ntohl(port->supported));
 596     }
 597     if (port->peer) {
 598         ds_put_format(string, "     peer:       ");
 599         ofp_print_port_features(string, ntohl(port->peer));
 600     }
 601 }
 602
 603 static void
 604 ofp_print_switch_features(struct ds *string,
 605                           const struct ofp_switch_features *osf)
 606 {
 607     size_t len = ntohs(osf->header.length);
 608     struct ofp_phy_port *port_list;
 609     int n_ports;
 610     int i;
 611
 612     ds_put_format(string, " ver:0x%x, dpid:%016"PRIx64"\n",
 613             osf->header.version, ntohll(osf->datapath_id));
 614     ds_put_format(string, "n_tables:%d, n_buffers:%d\n", osf->n_tables,
 615             ntohl(osf->n_buffers));
 616     ds_put_format(string, "features: capabilities:%#x, actions:%#x\n",
 617            ntohl(osf->capabilities), ntohl(osf->actions));
 618
 619     n_ports = (len - sizeof *osf) / sizeof *osf->ports;
 620
 621     port_list = xmemdup(osf->ports, len - sizeof *osf);
 622     qsort(port_list, n_ports, sizeof *port_list, compare_ports);
 623     for (i = 0; i < n_ports; i++) {
 624         ofp_print_phy_port(string, &port_list[i]);
 625     }
 626     free(port_list);
 627 }
 628
 629 static void
 630 ofp_print_switch_config(struct ds *string, const struct ofp_switch_config *osc)
 631 {
 632     enum ofp_config_flags flags;
 633
 634     flags = ntohs(osc->flags);
 635
 636     ds_put_format(string, " frags=%s", ofputil_frag_handling_to_string(flags));
 637     flags &= ~OFPC_FRAG_MASK;
 638
 639     if (flags & OFPC_INVALID_TTL_TO_CONTROLLER) {
 640         ds_put_format(string, " invalid_ttl_to_controller");
 641         flags &= ~OFPC_INVALID_TTL_TO_CONTROLLER;
 642     }
 643
 644     if (flags) {
 645         ds_put_format(string, " ***unknown flags 0x%04"PRIx16"***", flags);
 646     }
 647
 648     ds_put_format(string, " miss_send_len=%"PRIu16"\n", ntohs(osc->miss_send_len));
 649 }
 650
 651 static void print_wild(struct ds *string, const char *leader, int is_wild,
 652             int verbosity, const char *format, ...)
 653             __attribute__((format(printf, 5, 6)));
 654
 655 static void print_wild(struct ds *string, const char *leader, int is_wild,
 656                        int verbosity, const char *format, ...)
 657 {
 658     if (is_wild && verbosity < 2) {
 659         return;
 660     }
 661     ds_put_cstr(string, leader);
 662     if (!is_wild) {
 663         va_list args;
 664
 665         va_start(args, format);
 666         ds_put_format_valist(string, format, args);
 667         va_end(args);
 668     } else {
 669         ds_put_char(string, '*');
 670     }
 671     ds_put_char(string, ',');
 672 }
 673
 674 static void
 675 print_ip_netmask(struct ds *string, const char *leader, ovs_be32 ip,
 676                  uint32_t wild_bits, int verbosity)
 677 {
 678     if (wild_bits >= 32 && verbosity < 2) {
 679         return;
 680     }
 681     ds_put_cstr(string, leader);
 682     if (wild_bits < 32) {
 683         ds_put_format(string, IP_FMT, IP_ARGS(&ip));
 684         if (wild_bits) {
 685             ds_put_format(string, "/%d", 32 - wild_bits);
 686         }
 687     } else {
 688         ds_put_char(string, '*');
 689     }
 690     ds_put_char(string, ',');
 691 }
 692
 693 void
 694 ofp_print_match(struct ds *f, const struct ofp_match *om, int verbosity)
 695 {
 696     char *s = ofp_match_to_string(om, verbosity);
 697     ds_put_cstr(f, s);
 698     free(s);
 699 }
 700
 701 char *
 702 ofp_match_to_string(const struct ofp_match *om, int verbosity)
 703 {
 704     struct ds f = DS_EMPTY_INITIALIZER;
 705     uint32_t w = ntohl(om->wildcards);
 706     bool skip_type = false;
 707     bool skip_proto = false;
 708
 709     if (!(w & OFPFW_DL_TYPE)) {
 710         skip_type = true;
 711         if (om->dl_type == htons(ETH_TYPE_IP)) {
 712             if (!(w & OFPFW_NW_PROTO)) {
 713                 skip_proto = true;
 714                 if (om->nw_proto == IPPROTO_ICMP) {
 715                     ds_put_cstr(&f, "icmp,");
 716                 } else if (om->nw_proto == IPPROTO_TCP) {
 717                     ds_put_cstr(&f, "tcp,");
 718                 } else if (om->nw_proto == IPPROTO_UDP) {
 719                     ds_put_cstr(&f, "udp,");
 720                 } else {
 721                     ds_put_cstr(&f, "ip,");
 722                     skip_proto = false;
 723                 }
 724             } else {
 725                 ds_put_cstr(&f, "ip,");
 726             }
 727         } else if (om->dl_type == htons(ETH_TYPE_ARP)) {
 728             ds_put_cstr(&f, "arp,");
 729         } else {
 730             skip_type = false;
 731         }
 732     }
 733     print_wild(&f, "in_port=", w & OFPFW_IN_PORT, verbosity,
 734                "%d", ntohs(om->in_port));
 735     print_wild(&f, "dl_vlan=", w & OFPFW_DL_VLAN, verbosity,
 736                "%d", ntohs(om->dl_vlan));
 737     print_wild(&f, "dl_vlan_pcp=", w & OFPFW_DL_VLAN_PCP, verbosity,
 738                "%d", om->dl_vlan_pcp);
 739     print_wild(&f, "dl_src=", w & OFPFW_DL_SRC, verbosity,
 740                ETH_ADDR_FMT, ETH_ADDR_ARGS(om->dl_src));
 741     print_wild(&f, "dl_dst=", w & OFPFW_DL_DST, verbosity,
 742                ETH_ADDR_FMT, ETH_ADDR_ARGS(om->dl_dst));
 743     if (!skip_type) {
 744         print_wild(&f, "dl_type=", w & OFPFW_DL_TYPE, verbosity,
 745                    "0x%04x", ntohs(om->dl_type));
 746     }
 747     print_ip_netmask(&f, "nw_src=", om->nw_src,
 748                      (w & OFPFW_NW_SRC_MASK) >> OFPFW_NW_SRC_SHIFT, verbosity);
 749     print_ip_netmask(&f, "nw_dst=", om->nw_dst,
 750                      (w & OFPFW_NW_DST_MASK) >> OFPFW_NW_DST_SHIFT, verbosity);
 751     if (!skip_proto) {
 752         if (om->dl_type == htons(ETH_TYPE_ARP)) {
 753             print_wild(&f, "arp_op=", w & OFPFW_NW_PROTO, verbosity,
 754                        "%u", om->nw_proto);
 755         } else {
 756             print_wild(&f, "nw_proto=", w & OFPFW_NW_PROTO, verbosity,
 757                        "%u", om->nw_proto);
 758         }
 759     }
 760     print_wild(&f, "nw_tos=", w & OFPFW_NW_TOS, verbosity,
 761                "%u", om->nw_tos);
 762     if (om->nw_proto == IPPROTO_ICMP) {
 763         print_wild(&f, "icmp_type=", w & OFPFW_ICMP_TYPE, verbosity,
 764                    "%d", ntohs(om->tp_src));
 765         print_wild(&f, "icmp_code=", w & OFPFW_ICMP_CODE, verbosity,
 766                    "%d", ntohs(om->tp_dst));
 767     } else {
 768         print_wild(&f, "tp_src=", w & OFPFW_TP_SRC, verbosity,
 769                    "%d", ntohs(om->tp_src));
 770         print_wild(&f, "tp_dst=", w & OFPFW_TP_DST, verbosity,
 771                    "%d", ntohs(om->tp_dst));
 772     }
 773     if (ds_last(&f) == ',') {
 774         f.length--;
 775     }
 776     return ds_cstr(&f);
 777 }
 778
 779 static void
 780 ofp_print_flow_mod(struct ds *s, const struct ofp_header *oh,
 781                    enum ofputil_msg_code code, int verbosity)
 782 {
 783     struct ofputil_flow_mod fm;
 784     bool need_priority;
 785     enum ofperr error;
 786
 787     error = ofputil_decode_flow_mod(&fm, oh, OFPUTIL_P_OF10_TID);
 788     if (error) {
 789         ofp_print_error(s, error);
 790         return;
 791     }
 792
 793     ds_put_char(s, ' ');
 794     switch (fm.command) {
 795     case OFPFC_ADD:
 796         ds_put_cstr(s, "ADD");
 797         break;
 798     case OFPFC_MODIFY:
 799         ds_put_cstr(s, "MOD");
 800         break;
 801     case OFPFC_MODIFY_STRICT:
 802         ds_put_cstr(s, "MOD_STRICT");
 803         break;
 804     case OFPFC_DELETE:
 805         ds_put_cstr(s, "DEL");
 806         break;
 807     case OFPFC_DELETE_STRICT:
 808         ds_put_cstr(s, "DEL_STRICT");
 809         break;
 810     default:
 811         ds_put_format(s, "cmd:%d", fm.command);
 812     }
 813     if (fm.table_id != 0) {
 814         ds_put_format(s, " table:%d", fm.table_id);
 815     }
 816
 817     ds_put_char(s, ' ');
 818     if (verbosity >= 3 && code == OFPUTIL_OFPT_FLOW_MOD) {
 819         const struct ofp_flow_mod *ofm = (const struct ofp_flow_mod *) oh;
 820         ofp_print_match(s, &ofm->match, verbosity);
 821
 822         /* ofp_print_match() doesn't print priority. */
 823         need_priority = true;
 824     } else if (verbosity >= 3 && code == OFPUTIL_NXT_FLOW_MOD) {
 825         const struct nx_flow_mod *nfm = (const struct nx_flow_mod *) oh;
 826         const void *nxm = nfm + 1;
 827         char *nxm_s;
 828
 829         nxm_s = nx_match_to_string(nxm, ntohs(nfm->match_len));
 830         ds_put_cstr(s, nxm_s);
 831         free(nxm_s);
 832
 833         /* nx_match_to_string() doesn't print priority. */
 834         need_priority = true;
 835     } else {
 836         cls_rule_format(&fm.cr, s);
 837
 838         /* cls_rule_format() does print priority. */
 839         need_priority = false;
 840     }
 841
 842     if (ds_last(s) != ' ') {
 843         ds_put_char(s, ' ');
 844     }
 845     if (fm.cookie != htonll(0)) {
 846         ds_put_format(s, "cookie:0x%"PRIx64" ", ntohll(fm.cookie));
 847     }
 848     if (fm.idle_timeout != OFP_FLOW_PERMANENT) {
 849         ds_put_format(s, "idle:%"PRIu16" ", fm.idle_timeout);
 850     }
 851     if (fm.hard_timeout != OFP_FLOW_PERMANENT) {
 852         ds_put_format(s, "hard:%"PRIu16" ", fm.hard_timeout);
 853     }
 854     if (fm.cr.priority != OFP_DEFAULT_PRIORITY && need_priority) {
 855         ds_put_format(s, "pri:%"PRIu16" ", fm.cr.priority);
 856     }
 857     if (fm.buffer_id != UINT32_MAX) {
 858         ds_put_format(s, "buf:0x%"PRIx32" ", fm.buffer_id);
 859     }
 860     if (fm.flags != 0) {
 861         uint16_t flags = fm.flags;
 862
 863         if (flags & OFPFF_SEND_FLOW_REM) {
 864             ds_put_cstr(s, "send_flow_rem ");
 865         }
 866         if (flags & OFPFF_CHECK_OVERLAP) {
 867             ds_put_cstr(s, "check_overlap ");
 868         }
 869         if (flags & OFPFF_EMERG) {
 870             ds_put_cstr(s, "emerg ");
 871         }
 872
 873         flags &= ~(OFPFF_SEND_FLOW_REM | OFPFF_CHECK_OVERLAP | OFPFF_EMERG);
 874         if (flags) {
 875             ds_put_format(s, "flags:0x%"PRIx16" ", flags);
 876         }
 877     }
 878
 879     ofp_print_actions(s, fm.actions, fm.n_actions);
 880 }
 881
 882 static void
 883 ofp_print_duration(struct ds *string, unsigned int sec, unsigned int nsec)
 884 {
 885     ds_put_format(string, "%u", sec);
 886     if (nsec > 0) {
 887         ds_put_format(string, ".%09u", nsec);
 888         while (string->string[string->length - 1] == '0') {
 889             string->length--;
 890         }
 891     }
 892     ds_put_char(string, 's');
 893 }
 894
 895 static const char *
 896 ofp_flow_removed_reason_to_string(enum ofp_flow_removed_reason reason)
 897 {
 898     static char s[32];
 899
 900     switch (reason) {
 901     case OFPRR_IDLE_TIMEOUT:
 902         return "idle";
 903     case OFPRR_HARD_TIMEOUT:
 904         return "hard";
 905     case OFPRR_DELETE:
 906         return "delete";
 907     default:
 908         sprintf(s, "%d", (int) reason);
 909         return s;
 910     }
 911 }
 912
 913 static void
 914 ofp_print_flow_removed(struct ds *string, const struct ofp_header *oh)
 915 {
 916     struct ofputil_flow_removed fr;
 917     enum ofperr error;
 918
 919     error = ofputil_decode_flow_removed(&fr, oh);
 920     if (error) {
 921         ofp_print_error(string, error);
 922         return;
 923     }
 924
 925     ds_put_char(string, ' ');
 926     cls_rule_format(&fr.rule, string);
 927
 928     ds_put_format(string, " reason=%s",
 929                   ofp_flow_removed_reason_to_string(fr.reason));
 930
 931     if (fr.cookie != htonll(0)) {
 932         ds_put_format(string, " cookie:0x%"PRIx64, ntohll(fr.cookie));
 933     }
 934     ds_put_cstr(string, " duration");
 935     ofp_print_duration(string, fr.duration_sec, fr.duration_nsec);
 936     ds_put_format(string, " idle%"PRIu16" pkts%"PRIu64" bytes%"PRIu64"\n",
 937          fr.idle_timeout, fr.packet_count, fr.byte_count);
 938 }
 939
 940 static void
 941 ofp_print_port_mod(struct ds *string, const struct ofp_port_mod *opm)
 942 {
 943     ds_put_format(string, "port: %d: addr:"ETH_ADDR_FMT", config: %#x, mask:%#x\n",
 944             ntohs(opm->port_no), ETH_ADDR_ARGS(opm->hw_addr),
 945             ntohl(opm->config), ntohl(opm->mask));
 946     ds_put_format(string, "     advertise: ");
 947     if (opm->advertise) {
 948         ofp_print_port_features(string, ntohl(opm->advertise));
 949     } else {
 950         ds_put_format(string, "UNCHANGED\n");
 951     }
 952 }
 953
 954 static void
 955 ofp_print_error(struct ds *string, enum ofperr error)
 956 {
 957     if (string->length) {
 958         ds_put_char(string, ' ');
 959     }
 960     ds_put_format(string, "***decode error: %s***\n", ofperr_get_name(error));
 961 }
 962
 963 static void
 964 ofp_print_error_msg(struct ds *string, const struct ofp_error_msg *oem)
 965 {
 966     size_t len = ntohs(oem->header.length);
 967     size_t payload_ofs, payload_len;
 968     const void *payload;
 969     enum ofperr error;
 970     char *s;
 971
 972     error = ofperr_decode_msg(&oem->header, &payload_ofs);
 973     if (!error) {
 974         ds_put_cstr(string, "***decode error***");
 975         ds_put_hex_dump(string, oem->data, len - sizeof *oem, 0, true);
 976         return;
 977     }
 978
 979     ds_put_format(string, " %s\n", ofperr_get_name(error));
 980
 981     payload = (const uint8_t *) oem + payload_ofs;
 982     payload_len = len - payload_ofs;
 983     if (error == OFPERR_OFPHFC_INCOMPATIBLE || error == OFPERR_OFPHFC_EPERM) {
 984         ds_put_printable(string, payload, payload_len);
 985     } else {
 986         s = ofp_to_string(payload, payload_len, 1);
 987         ds_put_cstr(string, s);
 988         free(s);
 989     }
 990 }
 991
 992 static void
 993 ofp_print_port_status(struct ds *string, const struct ofp_port_status *ops)
 994 {
 995     if (ops->reason == OFPPR_ADD) {
 996         ds_put_format(string, " ADD:");
 997     } else if (ops->reason == OFPPR_DELETE) {
 998         ds_put_format(string, " DEL:");
 999     } else if (ops->reason == OFPPR_MODIFY) {
1000         ds_put_format(string, " MOD:");
1001     }
1002
1003     ofp_print_phy_port(string, &ops->desc);
1004 }
1005
1006 static void
1007 ofp_print_ofpst_desc_reply(struct ds *string, const struct ofp_desc_stats *ods)
1008 {
1009     ds_put_char(string, '\n');
1010     ds_put_format(string, "Manufacturer: %.*s\n",
1011             (int) sizeof ods->mfr_desc, ods->mfr_desc);
1012     ds_put_format(string, "Hardware: %.*s\n",
1013             (int) sizeof ods->hw_desc, ods->hw_desc);
1014     ds_put_format(string, "Software: %.*s\n",
1015             (int) sizeof ods->sw_desc, ods->sw_desc);
1016     ds_put_format(string, "Serial Num: %.*s\n",
1017             (int) sizeof ods->serial_num, ods->serial_num);
1018     ds_put_format(string, "DP Description: %.*s\n",
1019             (int) sizeof ods->dp_desc, ods->dp_desc);
1020 }
1021
1022 static void
1023 ofp_print_flow_stats_request(struct ds *string,
1024                              const struct ofp_stats_msg *osm)
1025 {
1026     struct ofputil_flow_stats_request fsr;
1027     enum ofperr error;
1028
1029     error = ofputil_decode_flow_stats_request(&fsr, &osm->header);
1030     if (error) {
1031         ofp_print_error(string, error);
1032         return;
1033     }
1034
1035     if (fsr.table_id != 0xff) {
1036         ds_put_format(string, " table=%"PRIu8, fsr.table_id);
1037     }
1038
1039     if (fsr.out_port != OFPP_NONE) {
1040         ds_put_cstr(string, " out_port=");
1041         ofputil_format_port(fsr.out_port, string);
1042     }
1043
1044     /* A flow stats request doesn't include a priority, but cls_rule_format()
1045      * will print one unless it is OFP_DEFAULT_PRIORITY. */
1046     fsr.match.priority = OFP_DEFAULT_PRIORITY;
1047
1048     ds_put_char(string, ' ');
1049     cls_rule_format(&fsr.match, string);
1050 }
1051
1052 static void
1053 ofp_print_flow_stats_reply(struct ds *string, const struct ofp_header *oh)
1054 {
1055     struct ofpbuf b;
1056
1057     ofpbuf_use_const(&b, oh, ntohs(oh->length));
1058     for (;;) {
1059         struct ofputil_flow_stats fs;
1060         int retval;
1061
1062         retval = ofputil_decode_flow_stats_reply(&fs, &b, true);
1063         if (retval) {
1064             if (retval != EOF) {
1065                 ds_put_cstr(string, " ***parse error***");
1066             }
1067             break;
1068         }
1069
1070         ds_put_char(string, '\n');
1071
1072         ds_put_format(string, " cookie=0x%"PRIx64", duration=",
1073                       ntohll(fs.cookie));
1074         ofp_print_duration(string, fs.duration_sec, fs.duration_nsec);
1075         ds_put_format(string, ", table=%"PRIu8", ", fs.table_id);
1076         ds_put_format(string, "n_packets=%"PRIu64", ", fs.packet_count);
1077         ds_put_format(string, "n_bytes=%"PRIu64", ", fs.byte_count);
1078         if (fs.idle_timeout != OFP_FLOW_PERMANENT) {
1079             ds_put_format(string, "idle_timeout=%"PRIu16",", fs.idle_timeout);
1080         }
1081         if (fs.hard_timeout != OFP_FLOW_PERMANENT) {
1082             ds_put_format(string, "hard_timeout=%"PRIu16",", fs.hard_timeout);
1083         }
1084         if (fs.idle_age >= 0) {
1085             ds_put_format(string, "idle_age=%d,", fs.idle_age);
1086         }
1087         if (fs.hard_age >= 0 && fs.hard_age != fs.duration_sec) {
1088             ds_put_format(string, "hard_age=%d,", fs.hard_age);
1089         }
1090
1091         cls_rule_format(&fs.rule, string);
1092         if (string->string[string->length - 1] != ' ') {
1093             ds_put_char(string, ' ');
1094         }
1095         ofp_print_actions(string, fs.actions, fs.n_actions);
1096      }
1097 }
1098
1099 static void
1100 ofp_print_ofpst_aggregate_reply(struct ds *string,
1101                                 const struct ofp_aggregate_stats_reply *asr)
1102 {
1103     ds_put_format(string, " packet_count=%"PRIu64,
1104                   ntohll(get_32aligned_be64(&asr->packet_count)));
1105     ds_put_format(string, " byte_count=%"PRIu64,
1106                   ntohll(get_32aligned_be64(&asr->byte_count)));
1107     ds_put_format(string, " flow_count=%"PRIu32, ntohl(asr->flow_count));
1108 }
1109
1110 static void
1111 ofp_print_nxst_aggregate_reply(struct ds *string,
1112                                const struct nx_aggregate_stats_reply *nasr)
1113 {
1114     ds_put_format(string, " packet_count=%"PRIu64, ntohll(nasr->packet_count));
1115     ds_put_format(string, " byte_count=%"PRIu64, ntohll(nasr->byte_count));
1116     ds_put_format(string, " flow_count=%"PRIu32, ntohl(nasr->flow_count));
1117 }
1118
1119 static void print_port_stat(struct ds *string, const char *leader,
1120                             const ovs_32aligned_be64 *statp, int more)
1121 {
1122     uint64_t stat = ntohll(get_32aligned_be64(statp));
1123
1124     ds_put_cstr(string, leader);
1125     if (stat != UINT64_MAX) {
1126         ds_put_format(string, "%"PRIu64, stat);
1127     } else {
1128         ds_put_char(string, '?');
1129     }
1130     if (more) {
1131         ds_put_cstr(string, ", ");
1132     } else {
1133         ds_put_cstr(string, "\n");
1134     }
1135 }
1136
1137 static void
1138 ofp_print_ofpst_port_request(struct ds *string,
1139                              const struct ofp_port_stats_request *psr)
1140 {
1141     ds_put_format(string, " port_no=%"PRIu16, ntohs(psr->port_no));
1142 }
1143
1144 static void
1145 ofp_print_ofpst_port_reply(struct ds *string, const struct ofp_header *oh,
1146                            int verbosity)
1147 {
1148     const struct ofp_port_stats *ps = ofputil_stats_body(oh);
1149     size_t n = ofputil_stats_body_len(oh) / sizeof *ps;
1150     ds_put_format(string, " %zu ports\n", n);
1151     if (verbosity < 1) {
1152         return;
1153     }
1154
1155     for (; n--; ps++) {
1156         ds_put_format(string, "  port %2"PRIu16": ", ntohs(ps->port_no));
1157
1158         ds_put_cstr(string, "rx ");
1159         print_port_stat(string, "pkts=", &ps->rx_packets, 1);
1160         print_port_stat(string, "bytes=", &ps->rx_bytes, 1);
1161         print_port_stat(string, "drop=", &ps->rx_dropped, 1);
1162         print_port_stat(string, "errs=", &ps->rx_errors, 1);
1163         print_port_stat(string, "frame=", &ps->rx_frame_err, 1);
1164         print_port_stat(string, "over=", &ps->rx_over_err, 1);
1165         print_port_stat(string, "crc=", &ps->rx_crc_err, 0);
1166
1167         ds_put_cstr(string, "           tx ");
1168         print_port_stat(string, "pkts=", &ps->tx_packets, 1);
1169         print_port_stat(string, "bytes=", &ps->tx_bytes, 1);
1170         print_port_stat(string, "drop=", &ps->tx_dropped, 1);
1171         print_port_stat(string, "errs=", &ps->tx_errors, 1);
1172         print_port_stat(string, "coll=", &ps->collisions, 0);
1173     }
1174 }
1175
1176 static void
1177 ofp_print_ofpst_table_reply(struct ds *string, const struct ofp_header *oh,
1178                             int verbosity)
1179 {
1180     const struct ofp_table_stats *ts = ofputil_stats_body(oh);
1181     size_t n = ofputil_stats_body_len(oh) / sizeof *ts;
1182     ds_put_format(string, " %zu tables\n", n);
1183     if (verbosity < 1) {
1184         return;
1185     }
1186
1187     for (; n--; ts++) {
1188         char name[OFP_MAX_TABLE_NAME_LEN + 1];
1189         ovs_strlcpy(name, ts->name, sizeof name);
1190
1191         ds_put_format(string, "  %d: %-8s: ", ts->table_id, name);
1192         ds_put_format(string, "wild=0x%05"PRIx32", ", ntohl(ts->wildcards));
1193         ds_put_format(string, "max=%6"PRIu32", ", ntohl(ts->max_entries));
1194         ds_put_format(string, "active=%"PRIu32"\n", ntohl(ts->active_count));
1195         ds_put_cstr(string, "               ");
1196         ds_put_format(string, "lookup=%"PRIu64", ",
1197                       ntohll(get_32aligned_be64(&ts->lookup_count)));
1198         ds_put_format(string, "matched=%"PRIu64"\n",
1199                       ntohll(get_32aligned_be64(&ts->matched_count)));
1200      }
1201 }
1202
1203 static void
1204 ofp_print_queue_name(struct ds *string, uint32_t queue_id)
1205 {
1206     if (queue_id == OFPQ_ALL) {
1207         ds_put_cstr(string, "ALL");
1208     } else {
1209         ds_put_format(string, "%"PRIu32, queue_id);
1210     }
1211 }
1212
1213 static void
1214 ofp_print_ofpst_queue_request(struct ds *string,
1215                               const struct ofp_queue_stats_request *qsr)
1216 {
1217     ds_put_cstr(string, "port=");
1218     ofputil_format_port(ntohs(qsr->port_no), string);
1219
1220     ds_put_cstr(string, " queue=");
1221     ofp_print_queue_name(string, ntohl(qsr->queue_id));
1222 }
1223
1224 static void
1225 ofp_print_ofpst_queue_reply(struct ds *string, const struct ofp_header *oh,
1226                             int verbosity)
1227 {
1228     const struct ofp_queue_stats *qs = ofputil_stats_body(oh);
1229     size_t n = ofputil_stats_body_len(oh) / sizeof *qs;
1230     ds_put_format(string, " %zu queues\n", n);
1231     if (verbosity < 1) {
1232         return;
1233     }
1234
1235     for (; n--; qs++) {
1236         ds_put_cstr(string, "  port ");
1237         ofputil_format_port(ntohs(qs->port_no), string);
1238         ds_put_cstr(string, " queue ");
1239         ofp_print_queue_name(string, ntohl(qs->queue_id));
1240         ds_put_cstr(string, ": ");
1241
1242         print_port_stat(string, "bytes=", &qs->tx_bytes, 1);
1243         print_port_stat(string, "pkts=", &qs->tx_packets, 1);
1244         print_port_stat(string, "errors=", &qs->tx_errors, 0);
1245     }
1246 }
1247
1248 static void
1249 ofp_print_stats_request(struct ds *string, const struct ofp_header *oh)
1250 {
1251     const struct ofp_stats_msg *srq = (const struct ofp_stats_msg *) oh;
1252
1253     if (srq->flags) {
1254         ds_put_format(string, " ***unknown flags 0x%04"PRIx16"***",
1255                       ntohs(srq->flags));
1256     }
1257 }
1258
1259 static void
1260 ofp_print_stats_reply(struct ds *string, const struct ofp_header *oh)
1261 {
1262     const struct ofp_stats_msg *srp = (const struct ofp_stats_msg *) oh;
1263
1264     if (srp->flags) {
1265         uint16_t flags = ntohs(srp->flags);
1266
1267         ds_put_cstr(string, " flags=");
1268         if (flags & OFPSF_REPLY_MORE) {
1269             ds_put_cstr(string, "[more]");
1270             flags &= ~OFPSF_REPLY_MORE;
1271         }
1272         if (flags) {
1273             ds_put_format(string, "[***unknown flags 0x%04"PRIx16"***]",
1274                           flags);
1275         }
1276     }
1277 }
1278
1279 static void
1280 ofp_print_echo(struct ds *string, const struct ofp_header *oh, int verbosity)
1281 {
1282     size_t len = ntohs(oh->length);
1283
1284     ds_put_format(string, " %zu bytes of payload\n", len - sizeof *oh);
1285     if (verbosity > 1) {
1286         ds_put_hex_dump(string, oh + 1, len - sizeof *oh, 0, true);
1287     }
1288 }
1289
1290 static void
1291 ofp_print_nxt_role_message(struct ds *string,
1292                            const struct nx_role_request *nrr)
1293 {
1294     unsigned int role = ntohl(nrr->role);
1295
1296     ds_put_cstr(string, " role=");
1297     if (role == NX_ROLE_OTHER) {
1298         ds_put_cstr(string, "other");
1299     } else if (role == NX_ROLE_MASTER) {
1300         ds_put_cstr(string, "master");
1301     } else if (role == NX_ROLE_SLAVE) {
1302         ds_put_cstr(string, "slave");
1303     } else {
1304         ds_put_format(string, "%u", role);
1305     }
1306 }
1307
1308 static void
1309 ofp_print_nxt_flow_mod_table_id(struct ds *string,
1310                                 const struct nx_flow_mod_table_id *nfmti)
1311 {
1312     ds_put_format(string, " %s", nfmti->set ? "enable" : "disable");
1313 }
1314
1315 static void
1316 ofp_print_nxt_set_flow_format(struct ds *string,
1317                               const struct nx_set_flow_format *nsff)
1318 {
1319     uint32_t format = ntohl(nsff->format);
1320
1321     ds_put_cstr(string, " format=");
1322     if (ofputil_nx_flow_format_is_valid(format)) {
1323         ds_put_cstr(string, ofputil_nx_flow_format_to_string(format));
1324     } else {
1325         ds_put_format(string, "%"PRIu32, format);
1326     }
1327 }
1328
1329 static void
1330 ofp_print_nxt_set_packet_in_format(struct ds *string,
1331                                    const struct nx_set_packet_in_format *nspf)
1332 {
1333     uint32_t format = ntohl(nspf->format);
1334
1335     ds_put_cstr(string, " format=");
1336     if (ofputil_packet_in_format_is_valid(format)) {
1337         ds_put_cstr(string, ofputil_packet_in_format_to_string(format));
1338     } else {
1339         ds_put_format(string, "%"PRIu32, format);
1340     }
1341 }
1342
1343 static const char *
1344 ofp_port_reason_to_string(enum ofp_port_reason reason)
1345 {
1346     static char s[32];
1347
1348     switch (reason) {
1349     case OFPPR_ADD:
1350         return "add";
1351
1352     case OFPPR_DELETE:
1353         return "delete";
1354
1355     case OFPPR_MODIFY:
1356         return "modify";
1357
1358     default:
1359         sprintf(s, "%d", (int) reason);
1360         return s;
1361     }
1362 }
1363
1364 static void
1365 ofp_print_nxt_set_async_config(struct ds *string,
1366                                const struct nx_async_config *nac)
1367 {
1368     int i;
1369
1370     for (i = 0; i < 2; i++) {
1371         int j;
1372
1373         ds_put_format(string, "\n %s:\n", i == 0 ? "master" : "slave");
1374
1375         ds_put_cstr(string, "       PACKET_IN:");
1376         for (j = 0; j < 32; j++) {
1377             if (nac->packet_in_mask[i] & htonl(1u << j)) {
1378                 ds_put_format(string, " %s",
1379                               ofputil_packet_in_reason_to_string(j));
1380             }
1381         }
1382         if (!nac->packet_in_mask[i]) {
1383             ds_put_cstr(string, " (off)");
1384         }
1385         ds_put_char(string, '\n');
1386
1387         ds_put_cstr(string, "     PORT_STATUS:");
1388         for (j = 0; j < 32; j++) {
1389             if (nac->port_status_mask[i] & htonl(1u << j)) {
1390                 ds_put_format(string, " %s", ofp_port_reason_to_string(j));
1391             }
1392         }
1393         if (!nac->port_status_mask[i]) {
1394             ds_put_cstr(string, " (off)");
1395         }
1396         ds_put_char(string, '\n');
1397
1398         ds_put_cstr(string, "    FLOW_REMOVED:");
1399         for (j = 0; j < 32; j++) {
1400             if (nac->flow_removed_mask[i] & htonl(1u << j)) {
1401                 ds_put_format(string, " %s",
1402                               ofp_flow_removed_reason_to_string(j));
1403             }
1404         }
1405         if (!nac->flow_removed_mask[i]) {
1406             ds_put_cstr(string, " (off)");
1407         }
1408         ds_put_char(string, '\n');
1409     }
1410 }
1411
1412 static void
1413 ofp_print_nxt_set_controller_id(struct ds *string,
1414                                 const struct nx_controller_id *nci)
1415 {
1416     ds_put_format(string, " id=%"PRIu16, ntohs(nci->controller_id));
1417 }
1418
1419 static void
1420 ofp_to_string__(const struct ofp_header *oh,
1421                 const struct ofputil_msg_type *type, struct ds *string,
1422                 int verbosity)
1423 {
1424     enum ofputil_msg_code code;
1425     const void *msg = oh;
1426
1427     ds_put_format(string, "%s (xid=0x%"PRIx32"):",
1428                   ofputil_msg_type_name(type), ntohl(oh->xid));
1429
1430     code = ofputil_msg_type_code(type);
1431     switch (code) {
1432     case OFPUTIL_MSG_INVALID:
1433         break;
1434
1435     case OFPUTIL_OFPT_HELLO:
1436         ds_put_char(string, '\n');
1437         ds_put_hex_dump(string, oh + 1, ntohs(oh->length) - sizeof *oh,
1438                         0, true);
1439         break;
1440
1441     case OFPUTIL_OFPT_ERROR:
1442         ofp_print_error_msg(string, msg);
1443         break;
1444
1445     case OFPUTIL_OFPT_ECHO_REQUEST:
1446     case OFPUTIL_OFPT_ECHO_REPLY:
1447         ofp_print_echo(string, oh, verbosity);
1448         break;
1449
1450     case OFPUTIL_OFPT_FEATURES_REQUEST:
1451         break;
1452
1453     case OFPUTIL_OFPT_FEATURES_REPLY:
1454         ofp_print_switch_features(string, msg);
1455         break;
1456
1457     case OFPUTIL_OFPT_GET_CONFIG_REQUEST:
1458         break;
1459
1460     case OFPUTIL_OFPT_GET_CONFIG_REPLY:
1461     case OFPUTIL_OFPT_SET_CONFIG:
1462         ofp_print_switch_config(string, msg);
1463         break;
1464
1465     case OFPUTIL_OFPT_PACKET_IN:
1466     case OFPUTIL_NXT_PACKET_IN:
1467         ofp_print_packet_in(string, msg, verbosity);
1468         break;
1469
1470     case OFPUTIL_OFPT_FLOW_REMOVED:
1471     case OFPUTIL_NXT_FLOW_REMOVED:
1472         ofp_print_flow_removed(string, msg);
1473         break;
1474
1475     case OFPUTIL_OFPT_PORT_STATUS:
1476         ofp_print_port_status(string, msg);
1477         break;
1478
1479     case OFPUTIL_OFPT_PACKET_OUT:
1480         ofp_print_packet_out(string, msg, verbosity);
1481         break;
1482
1483     case OFPUTIL_OFPT_FLOW_MOD:
1484     case OFPUTIL_NXT_FLOW_MOD:
1485         ofp_print_flow_mod(string, msg, code, verbosity);
1486         break;
1487
1488     case OFPUTIL_OFPT_PORT_MOD:
1489         ofp_print_port_mod(string, msg);
1490         break;
1491
1492     case OFPUTIL_OFPT_BARRIER_REQUEST:
1493     case OFPUTIL_OFPT_BARRIER_REPLY:
1494         break;
1495
1496     case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST:
1497     case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY:
1498         /* XXX */
1499         break;
1500
1501     case OFPUTIL_OFPST_DESC_REQUEST:
1502         ofp_print_stats_request(string, oh);
1503         break;
1504
1505     case OFPUTIL_OFPST_FLOW_REQUEST:
1506     case OFPUTIL_NXST_FLOW_REQUEST:
1507     case OFPUTIL_OFPST_AGGREGATE_REQUEST:
1508     case OFPUTIL_NXST_AGGREGATE_REQUEST:
1509         ofp_print_stats_request(string, oh);
1510         ofp_print_flow_stats_request(string, msg);
1511         break;
1512
1513     case OFPUTIL_OFPST_TABLE_REQUEST:
1514         ofp_print_stats_request(string, oh);
1515         break;
1516
1517     case OFPUTIL_OFPST_PORT_REQUEST:
1518         ofp_print_stats_request(string, oh);
1519         ofp_print_ofpst_port_request(string, msg);
1520         break;
1521
1522     case OFPUTIL_OFPST_QUEUE_REQUEST:
1523         ofp_print_stats_request(string, oh);
1524         ofp_print_ofpst_queue_request(string, msg);
1525         break;
1526
1527     case OFPUTIL_OFPST_DESC_REPLY:
1528         ofp_print_stats_reply(string, oh);
1529         ofp_print_ofpst_desc_reply(string, msg);
1530         break;
1531
1532     case OFPUTIL_OFPST_FLOW_REPLY:
1533     case OFPUTIL_NXST_FLOW_REPLY:
1534         ofp_print_stats_reply(string, oh);
1535         ofp_print_flow_stats_reply(string, oh);
1536         break;
1537
1538     case OFPUTIL_OFPST_QUEUE_REPLY:
1539         ofp_print_stats_reply(string, oh);
1540         ofp_print_ofpst_queue_reply(string, oh, verbosity);
1541         break;
1542
1543     case OFPUTIL_OFPST_PORT_REPLY:
1544         ofp_print_stats_reply(string, oh);
1545         ofp_print_ofpst_port_reply(string, oh, verbosity);
1546         break;
1547
1548     case OFPUTIL_OFPST_TABLE_REPLY:
1549         ofp_print_stats_reply(string, oh);
1550         ofp_print_ofpst_table_reply(string, oh, verbosity);
1551         break;
1552
1553     case OFPUTIL_OFPST_AGGREGATE_REPLY:
1554         ofp_print_stats_reply(string, oh);
1555         ofp_print_ofpst_aggregate_reply(string, msg);
1556         break;
1557
1558     case OFPUTIL_NXT_ROLE_REQUEST:
1559     case OFPUTIL_NXT_ROLE_REPLY:
1560         ofp_print_nxt_role_message(string, msg);
1561         break;
1562
1563     case OFPUTIL_NXT_FLOW_MOD_TABLE_ID:
1564         ofp_print_nxt_flow_mod_table_id(string, msg);
1565         break;
1566
1567     case OFPUTIL_NXT_SET_FLOW_FORMAT:
1568         ofp_print_nxt_set_flow_format(string, msg);
1569         break;
1570
1571     case OFPUTIL_NXT_SET_PACKET_IN_FORMAT:
1572         ofp_print_nxt_set_packet_in_format(string, msg);
1573         break;
1574
1575     case OFPUTIL_NXT_FLOW_AGE:
1576         break;
1577
1578     case OFPUTIL_NXT_SET_CONTROLLER_ID:
1579         ofp_print_nxt_set_controller_id(string, msg);
1580         break;
1581
1582     case OFPUTIL_NXT_SET_ASYNC_CONFIG:
1583         ofp_print_nxt_set_async_config(string, msg);
1584         break;
1585
1586     case OFPUTIL_NXST_AGGREGATE_REPLY:
1587         ofp_print_stats_reply(string, oh);
1588         ofp_print_nxst_aggregate_reply(string, msg);
1589         break;
1590     }
1591 }
1592
1593 /* Composes and returns a string representing the OpenFlow packet of 'len'
1594  * bytes at 'oh' at the given 'verbosity' level.  0 is a minimal amount of
1595  * verbosity and higher numbers increase verbosity.  The caller is responsible
1596  * for freeing the string. */
1597 char *
1598 ofp_to_string(const void *oh_, size_t len, int verbosity)
1599 {
1600     struct ds string = DS_EMPTY_INITIALIZER;
1601     const struct ofp_header *oh = oh_;
1602
1603     if (!len) {
1604         ds_put_cstr(&string, "OpenFlow message is empty\n");
1605     } else if (len < sizeof(struct ofp_header)) {
1606         ds_put_format(&string, "OpenFlow packet too short (only %zu bytes):\n",
1607                       len);
1608     } else if (ntohs(oh->length) > len) {
1609         ds_put_format(&string,
1610                       "(***truncated to %zu bytes from %"PRIu16"***)\n",
1611                       len, ntohs(oh->length));
1612     } else if (ntohs(oh->length) < len) {
1613         ds_put_format(&string,
1614                       "(***only uses %"PRIu16" bytes out of %zu***)\n",
1615                       ntohs(oh->length), len);
1616     } else {
1617         const struct ofputil_msg_type *type;
1618         enum ofperr error;
1619
1620         error = ofputil_decode_msg_type(oh, &type);
1621         if (!error) {
1622             ofp_to_string__(oh, type, &string, verbosity);
1623             if (verbosity >= 5) {
1624                 if (ds_last(&string) != '\n') {
1625                     ds_put_char(&string, '\n');
1626                 }
1627                 ds_put_hex_dump(&string, oh, len, 0, true);
1628             }
1629             if (ds_last(&string) != '\n') {
1630                 ds_put_char(&string, '\n');
1631             }
1632             return ds_steal_cstr(&string);
1633         }
1634
1635         ofp_print_error(&string, error);
1636     }
1637     ds_put_hex_dump(&string, oh, len, 0, true);
1638     return ds_steal_cstr(&string);
1639 }
1640 \f
1641 static void
1642 print_and_free(FILE *stream, char *string)
1643 {
1644     fputs(string, stream);
1645     free(string);
1646 }
1647
1648 /* Pretty-print the OpenFlow packet of 'len' bytes at 'oh' to 'stream' at the
1649  * given 'verbosity' level.  0 is a minimal amount of verbosity and higher
1650  * numbers increase verbosity. */
1651 void
1652 ofp_print(FILE *stream, const void *oh, size_t len, int verbosity)
1653 {
1654     print_and_free(stream, ofp_to_string(oh, len, verbosity));
1655 }
1656
1657 /* Dumps the contents of the Ethernet frame in the 'len' bytes starting at
1658  * 'data' to 'stream'. */
1659 void
1660 ofp_print_packet(FILE *stream, const void *data, size_t len)
1661 {
1662     print_and_free(stream, ofp_packet_to_string(data, len));
1663 }