2 * Copyright (c) 2008, 2009, 2010 Nicira Networks.
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:
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 #include "ofp-print.h"
22 #include <sys/types.h>
23 #include <netinet/in.h>
29 #include "byte-order.h"
31 #include "dynamic-string.h"
35 #include "openflow/openflow.h"
36 #include "openflow/nicira-ext.h"
41 static void ofp_print_port_name(struct ds *string, uint16_t port);
42 static void ofp_print_queue_name(struct ds *string, uint32_t port);
44 /* Returns a string that represents the contents of the Ethernet frame in the
45 * 'len' bytes starting at 'data' to 'stream' as output by tcpdump.
46 * 'total_len' specifies the full length of the Ethernet frame (of which 'len'
47 * bytes were captured).
49 * The caller must free the returned string.
51 * This starts and kills a tcpdump subprocess so it's quite expensive. */
53 ofp_packet_to_string(const void *data, size_t len, size_t total_len OVS_UNUSED)
55 struct ds ds = DS_EMPTY_INITIALIZER;
64 buf.data = (void *) data;
69 ovs_error(errno, "tmpfile");
70 return xstrdup("<error>");
72 pcap_write_header(pcap);
73 pcap_write(pcap, &buf);
76 ovs_error(errno, "error writing temporary file");
80 snprintf(command, sizeof command, "/usr/sbin/tcpdump -e -n -r /dev/fd/%d 2>/dev/null",
82 tcpdump = popen(command, "r");
85 ovs_error(errno, "exec(\"%s\")", command);
86 return xstrdup("<error>");
89 while ((c = getc(tcpdump)) != EOF) {
93 status = pclose(tcpdump);
94 if (WIFEXITED(status)) {
95 if (WEXITSTATUS(status))
96 ovs_error(0, "tcpdump exited with status %d", WEXITSTATUS(status));
97 } else if (WIFSIGNALED(status)) {
98 ovs_error(0, "tcpdump exited with signal %d", WTERMSIG(status));
103 /* Pretty-print the OFPT_PACKET_IN packet of 'len' bytes at 'oh' to 'stream'
104 * at the given 'verbosity' level. */
106 ofp_packet_in(struct ds *string, const void *oh, size_t len, int verbosity)
108 const struct ofp_packet_in *op = oh;
111 ds_put_format(string, " total_len=%"PRIu16" in_port=",
112 ntohs(op->total_len));
113 ofp_print_port_name(string, ntohs(op->in_port));
115 if (op->reason == OFPR_ACTION)
116 ds_put_cstr(string, " (via action)");
117 else if (op->reason != OFPR_NO_MATCH)
118 ds_put_format(string, " (***reason %"PRIu8"***)", op->reason);
120 data_len = len - offsetof(struct ofp_packet_in, data);
121 ds_put_format(string, " data_len=%zu", data_len);
122 if (htonl(op->buffer_id) == UINT32_MAX) {
123 ds_put_format(string, " (unbuffered)");
124 if (ntohs(op->total_len) != data_len)
125 ds_put_format(string, " (***total_len != data_len***)");
127 ds_put_format(string, " buffer=0x%08"PRIx32, ntohl(op->buffer_id));
128 if (ntohs(op->total_len) < data_len)
129 ds_put_format(string, " (***total_len < data_len***)");
131 ds_put_char(string, '\n');
135 struct ofpbuf packet;
137 packet.data = (void *) op->data;
138 packet.size = data_len;
139 flow_extract(&packet, 0, ntohs(op->in_port), &flow);
140 flow_format(string, &flow);
141 ds_put_char(string, '\n');
144 char *packet = ofp_packet_to_string(op->data, data_len,
145 ntohs(op->total_len));
146 ds_put_cstr(string, packet);
151 static void ofp_print_port_name(struct ds *string, uint16_t port)
170 case OFPP_CONTROLLER:
180 ds_put_format(string, "%"PRIu16, port);
183 ds_put_cstr(string, name);
187 print_note(struct ds *string, const struct nx_action_note *nan)
192 ds_put_cstr(string, "note:");
193 len = ntohs(nan->len) - offsetof(struct nx_action_note, note);
194 for (i = 0; i < len; i++) {
196 ds_put_char(string, '.');
198 ds_put_format(string, "%02"PRIx8, nan->note[i]);
203 ofp_print_nx_action(struct ds *string, const struct nx_action_header *nah)
205 switch (ntohs(nah->subtype)) {
206 case NXAST_RESUBMIT: {
207 const struct nx_action_resubmit *nar = (struct nx_action_resubmit *)nah;
208 ds_put_format(string, "resubmit:");
209 ofp_print_port_name(string, ntohs(nar->in_port));
213 case NXAST_SET_TUNNEL: {
214 const struct nx_action_set_tunnel *nast =
215 (struct nx_action_set_tunnel *)nah;
216 ds_put_format(string, "set_tunnel:0x%08"PRIx32, ntohl(nast->tun_id));
220 case NXAST_DROP_SPOOFED_ARP:
221 ds_put_cstr(string, "drop_spoofed_arp");
224 case NXAST_SET_QUEUE: {
225 const struct nx_action_set_queue *nasq =
226 (struct nx_action_set_queue *)nah;
227 ds_put_format(string, "set_queue:%u", ntohl(nasq->queue_id));
231 case NXAST_POP_QUEUE:
232 ds_put_cstr(string, "pop_queue");
236 print_note(string, (const struct nx_action_note *) nah);
240 ds_put_format(string, "***unknown Nicira action:%d***",
241 ntohs(nah->subtype));
246 ofp_print_action(struct ds *string, const struct ofp_action_header *ah,
252 struct openflow_action {
257 const struct openflow_action of_actions[] = {
259 sizeof(struct ofp_action_output),
260 sizeof(struct ofp_action_output),
262 [OFPAT_SET_VLAN_VID] = {
263 sizeof(struct ofp_action_vlan_vid),
264 sizeof(struct ofp_action_vlan_vid),
266 [OFPAT_SET_VLAN_PCP] = {
267 sizeof(struct ofp_action_vlan_pcp),
268 sizeof(struct ofp_action_vlan_pcp),
270 [OFPAT_STRIP_VLAN] = {
271 sizeof(struct ofp_action_header),
272 sizeof(struct ofp_action_header),
274 [OFPAT_SET_DL_SRC] = {
275 sizeof(struct ofp_action_dl_addr),
276 sizeof(struct ofp_action_dl_addr),
278 [OFPAT_SET_DL_DST] = {
279 sizeof(struct ofp_action_dl_addr),
280 sizeof(struct ofp_action_dl_addr),
282 [OFPAT_SET_NW_SRC] = {
283 sizeof(struct ofp_action_nw_addr),
284 sizeof(struct ofp_action_nw_addr),
286 [OFPAT_SET_NW_DST] = {
287 sizeof(struct ofp_action_nw_addr),
288 sizeof(struct ofp_action_nw_addr),
290 [OFPAT_SET_NW_TOS] = {
291 sizeof(struct ofp_action_nw_tos),
292 sizeof(struct ofp_action_nw_tos),
294 [OFPAT_SET_TP_SRC] = {
295 sizeof(struct ofp_action_tp_port),
296 sizeof(struct ofp_action_tp_port),
298 [OFPAT_SET_TP_DST] = {
299 sizeof(struct ofp_action_tp_port),
300 sizeof(struct ofp_action_tp_port),
302 /* OFPAT_VENDOR is not here, since it would blow up the array size. */
305 if (actions_len < sizeof *ah) {
306 ds_put_format(string, "***action array too short for next action***\n");
310 type = ntohs(ah->type);
311 len = ntohs(ah->len);
312 if (actions_len < len) {
313 ds_put_format(string, "***truncated action %"PRIu16"***\n", type);
318 ds_put_format(string, "***zero-length action***\n");
322 if ((len % OFP_ACTION_ALIGN) != 0) {
323 ds_put_format(string,
324 "***action %"PRIu16" length not a multiple of %d***\n",
325 type, OFP_ACTION_ALIGN);
329 if (type < ARRAY_SIZE(of_actions)) {
330 const struct openflow_action *act = &of_actions[type];
331 if ((len < act->min_size) || (len > act->max_size)) {
332 ds_put_format(string,
333 "***action %"PRIu16" wrong length: %zu***\n", type, len);
340 struct ofp_action_output *oa = (struct ofp_action_output *)ah;
341 uint16_t port = ntohs(oa->port);
342 if (port < OFPP_MAX) {
343 ds_put_format(string, "output:%"PRIu16, port);
345 ofp_print_port_name(string, port);
346 if (port == OFPP_CONTROLLER) {
348 ds_put_format(string, ":%"PRIu16, ntohs(oa->max_len));
350 ds_put_cstr(string, ":all");
357 case OFPAT_ENQUEUE: {
358 struct ofp_action_enqueue *ea = (struct ofp_action_enqueue *)ah;
359 unsigned int port = ntohs(ea->port);
360 unsigned int queue_id = ntohl(ea->queue_id);
361 ds_put_format(string, "enqueue:");
362 if (port != OFPP_IN_PORT) {
363 ds_put_format(string, "%u", port);
365 ds_put_cstr(string, "IN_PORT");
367 ds_put_format(string, "q%u", queue_id);
371 case OFPAT_SET_VLAN_VID: {
372 struct ofp_action_vlan_vid *va = (struct ofp_action_vlan_vid *)ah;
373 ds_put_format(string, "mod_vlan_vid:%"PRIu16, ntohs(va->vlan_vid));
377 case OFPAT_SET_VLAN_PCP: {
378 struct ofp_action_vlan_pcp *va = (struct ofp_action_vlan_pcp *)ah;
379 ds_put_format(string, "mod_vlan_pcp:%"PRIu8, va->vlan_pcp);
383 case OFPAT_STRIP_VLAN:
384 ds_put_cstr(string, "strip_vlan");
387 case OFPAT_SET_DL_SRC: {
388 struct ofp_action_dl_addr *da = (struct ofp_action_dl_addr *)ah;
389 ds_put_format(string, "mod_dl_src:"ETH_ADDR_FMT,
390 ETH_ADDR_ARGS(da->dl_addr));
394 case OFPAT_SET_DL_DST: {
395 struct ofp_action_dl_addr *da = (struct ofp_action_dl_addr *)ah;
396 ds_put_format(string, "mod_dl_dst:"ETH_ADDR_FMT,
397 ETH_ADDR_ARGS(da->dl_addr));
401 case OFPAT_SET_NW_SRC: {
402 struct ofp_action_nw_addr *na = (struct ofp_action_nw_addr *)ah;
403 ds_put_format(string, "mod_nw_src:"IP_FMT, IP_ARGS(&na->nw_addr));
407 case OFPAT_SET_NW_DST: {
408 struct ofp_action_nw_addr *na = (struct ofp_action_nw_addr *)ah;
409 ds_put_format(string, "mod_nw_dst:"IP_FMT, IP_ARGS(&na->nw_addr));
413 case OFPAT_SET_NW_TOS: {
414 struct ofp_action_nw_tos *nt = (struct ofp_action_nw_tos *)ah;
415 ds_put_format(string, "mod_nw_tos:%d", nt->nw_tos);
419 case OFPAT_SET_TP_SRC: {
420 struct ofp_action_tp_port *ta = (struct ofp_action_tp_port *)ah;
421 ds_put_format(string, "mod_tp_src:%d", ntohs(ta->tp_port));
425 case OFPAT_SET_TP_DST: {
426 struct ofp_action_tp_port *ta = (struct ofp_action_tp_port *)ah;
427 ds_put_format(string, "mod_tp_dst:%d", ntohs(ta->tp_port));
432 struct ofp_action_vendor_header *avh
433 = (struct ofp_action_vendor_header *)ah;
434 if (len < sizeof *avh) {
435 ds_put_format(string, "***ofpat_vendor truncated***\n");
438 if (avh->vendor == htonl(NX_VENDOR_ID)) {
439 ofp_print_nx_action(string, (struct nx_action_header *)avh);
441 ds_put_format(string, "vendor action:0x%x", ntohl(avh->vendor));
447 ds_put_format(string, "(decoder %"PRIu16" not implemented)", type);
455 ofp_print_actions(struct ds *string, const struct ofp_action_header *action,
458 uint8_t *p = (uint8_t *)action;
461 ds_put_cstr(string, "actions=");
463 ds_put_cstr(string, "drop");
465 while (actions_len > 0) {
467 ds_put_cstr(string, ",");
469 len = ofp_print_action(string, (struct ofp_action_header *)p,
479 /* Pretty-print the OFPT_PACKET_OUT packet of 'len' bytes at 'oh' to 'string'
480 * at the given 'verbosity' level. */
481 static void ofp_packet_out(struct ds *string, const void *oh, size_t len,
484 const struct ofp_packet_out *opo = oh;
485 size_t actions_len = ntohs(opo->actions_len);
487 ds_put_cstr(string, " in_port=");
488 ofp_print_port_name(string, ntohs(opo->in_port));
490 ds_put_format(string, " actions_len=%zu ", actions_len);
491 if (actions_len > (ntohs(opo->header.length) - sizeof *opo)) {
492 ds_put_format(string, "***packet too short for action length***\n");
495 ofp_print_actions(string, opo->actions, actions_len);
497 if (ntohl(opo->buffer_id) == UINT32_MAX) {
498 int data_len = len - sizeof *opo - actions_len;
499 ds_put_format(string, " data_len=%d", data_len);
500 if (verbosity > 0 && len > sizeof *opo) {
501 char *packet = ofp_packet_to_string(
502 (uint8_t *)opo->actions + actions_len, data_len, data_len);
503 ds_put_char(string, '\n');
504 ds_put_cstr(string, packet);
508 ds_put_format(string, " buffer=0x%08"PRIx32, ntohl(opo->buffer_id));
510 ds_put_char(string, '\n');
513 /* qsort comparison function. */
515 compare_ports(const void *a_, const void *b_)
517 const struct ofp_phy_port *a = a_;
518 const struct ofp_phy_port *b = b_;
519 uint16_t ap = ntohs(a->port_no);
520 uint16_t bp = ntohs(b->port_no);
522 return ap < bp ? -1 : ap > bp;
525 static void ofp_print_port_features(struct ds *string, uint32_t features)
528 ds_put_cstr(string, "Unsupported\n");
531 if (features & OFPPF_10MB_HD) {
532 ds_put_cstr(string, "10MB-HD ");
534 if (features & OFPPF_10MB_FD) {
535 ds_put_cstr(string, "10MB-FD ");
537 if (features & OFPPF_100MB_HD) {
538 ds_put_cstr(string, "100MB-HD ");
540 if (features & OFPPF_100MB_FD) {
541 ds_put_cstr(string, "100MB-FD ");
543 if (features & OFPPF_1GB_HD) {
544 ds_put_cstr(string, "1GB-HD ");
546 if (features & OFPPF_1GB_FD) {
547 ds_put_cstr(string, "1GB-FD ");
549 if (features & OFPPF_10GB_FD) {
550 ds_put_cstr(string, "10GB-FD ");
552 if (features & OFPPF_COPPER) {
553 ds_put_cstr(string, "COPPER ");
555 if (features & OFPPF_FIBER) {
556 ds_put_cstr(string, "FIBER ");
558 if (features & OFPPF_AUTONEG) {
559 ds_put_cstr(string, "AUTO_NEG ");
561 if (features & OFPPF_PAUSE) {
562 ds_put_cstr(string, "AUTO_PAUSE ");
564 if (features & OFPPF_PAUSE_ASYM) {
565 ds_put_cstr(string, "AUTO_PAUSE_ASYM ");
567 ds_put_char(string, '\n');
571 ofp_print_phy_port(struct ds *string, const struct ofp_phy_port *port)
573 char name[OFP_MAX_PORT_NAME_LEN];
576 memcpy(name, port->name, sizeof name);
577 for (j = 0; j < sizeof name - 1; j++) {
578 if (!isprint(name[j])) {
584 ds_put_char(string, ' ');
585 ofp_print_port_name(string, ntohs(port->port_no));
586 ds_put_format(string, "(%s): addr:"ETH_ADDR_FMT", config: %#x, state:%#x\n",
587 name, ETH_ADDR_ARGS(port->hw_addr), ntohl(port->config),
590 ds_put_format(string, " current: ");
591 ofp_print_port_features(string, ntohl(port->curr));
593 if (port->advertised) {
594 ds_put_format(string, " advertised: ");
595 ofp_print_port_features(string, ntohl(port->advertised));
597 if (port->supported) {
598 ds_put_format(string, " supported: ");
599 ofp_print_port_features(string, ntohl(port->supported));
602 ds_put_format(string, " peer: ");
603 ofp_print_port_features(string, ntohl(port->peer));
607 /* Pretty-print the struct ofp_switch_features of 'len' bytes at 'oh' to
608 * 'string' at the given 'verbosity' level. */
610 ofp_print_switch_features(struct ds *string, const void *oh, size_t len,
611 int verbosity OVS_UNUSED)
613 const struct ofp_switch_features *osf = oh;
614 struct ofp_phy_port *port_list;
618 ds_put_format(string, " ver:0x%x, dpid:%016"PRIx64"\n",
619 osf->header.version, ntohll(osf->datapath_id));
620 ds_put_format(string, "n_tables:%d, n_buffers:%d\n", osf->n_tables,
621 ntohl(osf->n_buffers));
622 ds_put_format(string, "features: capabilities:%#x, actions:%#x\n",
623 ntohl(osf->capabilities), ntohl(osf->actions));
625 if (ntohs(osf->header.length) >= sizeof *osf) {
626 len = MIN(len, ntohs(osf->header.length));
628 n_ports = (len - sizeof *osf) / sizeof *osf->ports;
630 port_list = xmemdup(osf->ports, len - sizeof *osf);
631 qsort(port_list, n_ports, sizeof *port_list, compare_ports);
632 for (i = 0; i < n_ports; i++) {
633 ofp_print_phy_port(string, &port_list[i]);
638 /* Pretty-print the struct ofp_switch_config of 'len' bytes at 'oh' to 'string'
639 * at the given 'verbosity' level. */
641 ofp_print_switch_config(struct ds *string, const void *oh,
642 size_t len OVS_UNUSED, int verbosity OVS_UNUSED)
644 const struct ofp_switch_config *osc = oh;
647 flags = ntohs(osc->flags);
649 ds_put_format(string, " ***unknown flags 0x%04"PRIx16"***", flags);
652 ds_put_format(string, " miss_send_len=%"PRIu16"\n", ntohs(osc->miss_send_len));
655 static void print_wild(struct ds *string, const char *leader, int is_wild,
656 int verbosity, const char *format, ...)
657 __attribute__((format(printf, 5, 6)));
659 static void print_wild(struct ds *string, const char *leader, int is_wild,
660 int verbosity, const char *format, ...)
662 if (is_wild && verbosity < 2) {
665 ds_put_cstr(string, leader);
669 va_start(args, format);
670 ds_put_format_valist(string, format, args);
673 ds_put_char(string, '*');
675 ds_put_char(string, ',');
679 print_ip_netmask(struct ds *string, const char *leader, uint32_t ip,
680 uint32_t wild_bits, int verbosity)
682 if (wild_bits >= 32 && verbosity < 2) {
685 ds_put_cstr(string, leader);
686 if (wild_bits < 32) {
687 ds_put_format(string, IP_FMT, IP_ARGS(&ip));
689 ds_put_format(string, "/%d", 32 - wild_bits);
692 ds_put_char(string, '*');
694 ds_put_char(string, ',');
698 ofp_print_match(struct ds *f, const struct ofp_match *om, int verbosity)
700 char *s = ofp_match_to_string(om, verbosity);
706 ofp_match_to_string(const struct ofp_match *om, int verbosity)
708 struct ds f = DS_EMPTY_INITIALIZER;
709 uint32_t w = ntohl(om->wildcards);
710 bool skip_type = false;
711 bool skip_proto = false;
713 if (!(w & OFPFW_DL_TYPE)) {
715 if (om->dl_type == htons(ETH_TYPE_IP)) {
716 if (!(w & OFPFW_NW_PROTO)) {
718 if (om->nw_proto == IP_TYPE_ICMP) {
719 ds_put_cstr(&f, "icmp,");
720 } else if (om->nw_proto == IP_TYPE_TCP) {
721 ds_put_cstr(&f, "tcp,");
722 } else if (om->nw_proto == IP_TYPE_UDP) {
723 ds_put_cstr(&f, "udp,");
725 ds_put_cstr(&f, "ip,");
729 ds_put_cstr(&f, "ip,");
731 } else if (om->dl_type == htons(ETH_TYPE_ARP)) {
732 ds_put_cstr(&f, "arp,");
737 if (w & NXFW_TUN_ID) {
738 ds_put_cstr(&f, "tun_id_wild,");
740 print_wild(&f, "in_port=", w & OFPFW_IN_PORT, verbosity,
741 "%d", ntohs(om->in_port));
742 print_wild(&f, "dl_vlan=", w & OFPFW_DL_VLAN, verbosity,
743 "%d", ntohs(om->dl_vlan));
744 print_wild(&f, "dl_vlan_pcp=", w & OFPFW_DL_VLAN_PCP, verbosity,
745 "%d", om->dl_vlan_pcp);
746 print_wild(&f, "dl_src=", w & OFPFW_DL_SRC, verbosity,
747 ETH_ADDR_FMT, ETH_ADDR_ARGS(om->dl_src));
748 print_wild(&f, "dl_dst=", w & OFPFW_DL_DST, verbosity,
749 ETH_ADDR_FMT, ETH_ADDR_ARGS(om->dl_dst));
751 print_wild(&f, "dl_type=", w & OFPFW_DL_TYPE, verbosity,
752 "0x%04x", ntohs(om->dl_type));
754 print_ip_netmask(&f, "nw_src=", om->nw_src,
755 (w & OFPFW_NW_SRC_MASK) >> OFPFW_NW_SRC_SHIFT, verbosity);
756 print_ip_netmask(&f, "nw_dst=", om->nw_dst,
757 (w & OFPFW_NW_DST_MASK) >> OFPFW_NW_DST_SHIFT, verbosity);
759 if (om->dl_type == htons(ETH_TYPE_ARP)) {
760 print_wild(&f, "opcode=", w & OFPFW_NW_PROTO, verbosity,
763 print_wild(&f, "nw_proto=", w & OFPFW_NW_PROTO, verbosity,
767 print_wild(&f, "nw_tos=", w & OFPFW_NW_TOS, verbosity,
769 if (om->nw_proto == IP_TYPE_ICMP) {
770 print_wild(&f, "icmp_type=", w & OFPFW_ICMP_TYPE, verbosity,
771 "%d", ntohs(om->icmp_type));
772 print_wild(&f, "icmp_code=", w & OFPFW_ICMP_CODE, verbosity,
773 "%d", ntohs(om->icmp_code));
775 print_wild(&f, "tp_src=", w & OFPFW_TP_SRC, verbosity,
776 "%d", ntohs(om->tp_src));
777 print_wild(&f, "tp_dst=", w & OFPFW_TP_DST, verbosity,
778 "%d", ntohs(om->tp_dst));
783 /* Pretty-print the OFPT_FLOW_MOD packet of 'len' bytes at 'oh' to 'string'
784 * at the given 'verbosity' level. */
786 ofp_print_flow_mod(struct ds *string, const void *oh, size_t len,
789 const struct ofp_flow_mod *ofm = oh;
791 ds_put_char(string, ' ');
792 ofp_print_match(string, &ofm->match, verbosity);
793 if (ds_last(string) != ' ') {
794 ds_put_char(string, ' ');
797 switch (ntohs(ofm->command)) {
799 ds_put_cstr(string, "ADD:");
802 ds_put_cstr(string, "MOD:");
804 case OFPFC_MODIFY_STRICT:
805 ds_put_cstr(string, "MOD_STRICT:");
808 ds_put_cstr(string, "DEL:");
810 case OFPFC_DELETE_STRICT:
811 ds_put_cstr(string, "DEL_STRICT:");
814 ds_put_format(string, "cmd:%d", ntohs(ofm->command));
816 if (ofm->cookie != htonll(0)) {
817 ds_put_format(string, " cookie:0x%"PRIx64, ntohll(ofm->cookie));
819 if (ofm->idle_timeout != htons(OFP_FLOW_PERMANENT)) {
820 ds_put_format(string, " idle:%d", ntohs(ofm->idle_timeout));
822 if (ofm->hard_timeout != htons(OFP_FLOW_PERMANENT)) {
823 ds_put_format(string, " hard:%d", ntohs(ofm->hard_timeout));
825 if (ofm->priority != htons(32768)) {
826 ds_put_format(string, " pri:%"PRIu16, ntohs(ofm->priority));
828 if (ofm->buffer_id != htonl(UINT32_MAX)) {
829 ds_put_format(string, " buf:%#"PRIx32, ntohl(ofm->buffer_id));
831 if (ofm->flags != htons(0)) {
832 ds_put_format(string, " flags:%"PRIx16, ntohs(ofm->flags));
834 ds_put_cstr(string, " ");
835 ofp_print_actions(string, ofm->actions,
836 len - offsetof(struct ofp_flow_mod, actions));
837 ds_put_char(string, '\n');
840 /* Pretty-print the OFPT_FLOW_REMOVED packet of 'len' bytes at 'oh' to 'string'
841 * at the given 'verbosity' level. */
843 ofp_print_flow_removed(struct ds *string, const void *oh,
844 size_t len OVS_UNUSED, int verbosity)
846 const struct ofp_flow_removed *ofr = oh;
848 ofp_print_match(string, &ofr->match, verbosity);
849 ds_put_cstr(string, " reason=");
850 switch (ofr->reason) {
851 case OFPRR_IDLE_TIMEOUT:
852 ds_put_cstr(string, "idle");
854 case OFPRR_HARD_TIMEOUT:
855 ds_put_cstr(string, "hard");
858 ds_put_cstr(string, "delete");
861 ds_put_format(string, "**%"PRIu8"**", ofr->reason);
865 if (ofr->cookie != htonll(0)) {
866 ds_put_format(string, " cookie:0x%"PRIx64, ntohll(ofr->cookie));
868 if (ofr->priority != htons(32768)) {
869 ds_put_format(string, " pri:%"PRIu16, ntohs(ofr->priority));
871 ds_put_format(string, " secs%"PRIu32" nsecs%"PRIu32
872 " idle%"PRIu16" pkts%"PRIu64" bytes%"PRIu64"\n",
873 ntohl(ofr->duration_sec), ntohl(ofr->duration_nsec),
874 ntohs(ofr->idle_timeout), ntohll(ofr->packet_count),
875 ntohll(ofr->byte_count));
879 ofp_print_port_mod(struct ds *string, const void *oh, size_t len OVS_UNUSED,
880 int verbosity OVS_UNUSED)
882 const struct ofp_port_mod *opm = oh;
884 ds_put_format(string, "port: %d: addr:"ETH_ADDR_FMT", config: %#x, mask:%#x\n",
885 ntohs(opm->port_no), ETH_ADDR_ARGS(opm->hw_addr),
886 ntohl(opm->config), ntohl(opm->mask));
887 ds_put_format(string, " advertise: ");
888 if (opm->advertise) {
889 ofp_print_port_features(string, ntohl(opm->advertise));
891 ds_put_format(string, "UNCHANGED\n");
901 static const struct error_type error_types[] = {
902 #define ERROR_TYPE(TYPE) {TYPE, -1, #TYPE}
903 #define ERROR_CODE(TYPE, CODE) {TYPE, CODE, #CODE}
904 ERROR_TYPE(OFPET_HELLO_FAILED),
905 ERROR_CODE(OFPET_HELLO_FAILED, OFPHFC_INCOMPATIBLE),
906 ERROR_CODE(OFPET_HELLO_FAILED, OFPHFC_EPERM),
908 ERROR_TYPE(OFPET_BAD_REQUEST),
909 ERROR_CODE(OFPET_BAD_REQUEST, OFPBRC_BAD_VERSION),
910 ERROR_CODE(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE),
911 ERROR_CODE(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT),
912 ERROR_CODE(OFPET_BAD_REQUEST, OFPBRC_BAD_VENDOR),
913 ERROR_CODE(OFPET_BAD_REQUEST, OFPBRC_BAD_SUBTYPE),
914 ERROR_CODE(OFPET_BAD_REQUEST, OFPBRC_EPERM),
915 ERROR_CODE(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN),
916 ERROR_CODE(OFPET_BAD_REQUEST, OFPBRC_BUFFER_EMPTY),
917 ERROR_CODE(OFPET_BAD_REQUEST, OFPBRC_BUFFER_UNKNOWN),
919 ERROR_TYPE(OFPET_BAD_ACTION),
920 ERROR_CODE(OFPET_BAD_ACTION, OFPBAC_BAD_TYPE),
921 ERROR_CODE(OFPET_BAD_ACTION, OFPBAC_BAD_LEN),
922 ERROR_CODE(OFPET_BAD_ACTION, OFPBAC_BAD_VENDOR),
923 ERROR_CODE(OFPET_BAD_ACTION, OFPBAC_BAD_VENDOR_TYPE),
924 ERROR_CODE(OFPET_BAD_ACTION, OFPBAC_BAD_OUT_PORT),
925 ERROR_CODE(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT),
926 ERROR_CODE(OFPET_BAD_ACTION, OFPBAC_EPERM),
927 ERROR_CODE(OFPET_BAD_ACTION, OFPBAC_TOO_MANY),
929 ERROR_TYPE(OFPET_FLOW_MOD_FAILED),
930 ERROR_CODE(OFPET_FLOW_MOD_FAILED, OFPFMFC_ALL_TABLES_FULL),
931 ERROR_CODE(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP),
932 ERROR_CODE(OFPET_FLOW_MOD_FAILED, OFPFMFC_EPERM),
933 ERROR_CODE(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_EMERG_TIMEOUT),
934 ERROR_CODE(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND),
936 ERROR_TYPE(OFPET_PORT_MOD_FAILED),
937 ERROR_CODE(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT),
938 ERROR_CODE(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR)
940 #define N_ERROR_TYPES ARRAY_SIZE(error_types)
943 lookup_error_type(int type)
945 const struct error_type *t;
947 for (t = error_types; t < &error_types[N_ERROR_TYPES]; t++) {
948 if (t->type == type && t->code == -1) {
956 lookup_error_code(int type, int code)
958 const struct error_type *t;
960 for (t = error_types; t < &error_types[N_ERROR_TYPES]; t++) {
961 if (t->type == type && t->code == code) {
968 /* Pretty-print the OFPT_ERROR packet of 'len' bytes at 'oh' to 'string'
969 * at the given 'verbosity' level. */
971 ofp_print_error_msg(struct ds *string, const void *oh, size_t len,
972 int verbosity OVS_UNUSED)
974 const struct ofp_error_msg *oem = oh;
975 int type = ntohs(oem->type);
976 int code = ntohs(oem->code);
979 ds_put_format(string, " type%d(%s) code%d(%s) payload:\n",
980 type, lookup_error_type(type),
981 code, lookup_error_code(type, code));
984 case OFPET_HELLO_FAILED:
985 ds_put_printable(string, (char *) oem->data, len - sizeof *oem);
988 case OFPET_BAD_REQUEST:
989 s = ofp_to_string(oem->data, len - sizeof *oem, 1);
990 ds_put_cstr(string, s);
995 ds_put_hex_dump(string, oem->data, len - sizeof *oem, 0, true);
1000 /* Pretty-print the OFPT_PORT_STATUS packet of 'len' bytes at 'oh' to 'string'
1001 * at the given 'verbosity' level. */
1003 ofp_print_port_status(struct ds *string, const void *oh, size_t len OVS_UNUSED,
1004 int verbosity OVS_UNUSED)
1006 const struct ofp_port_status *ops = oh;
1008 if (ops->reason == OFPPR_ADD) {
1009 ds_put_format(string, " ADD:");
1010 } else if (ops->reason == OFPPR_DELETE) {
1011 ds_put_format(string, " DEL:");
1012 } else if (ops->reason == OFPPR_MODIFY) {
1013 ds_put_format(string, " MOD:");
1016 ofp_print_phy_port(string, &ops->desc);
1020 ofp_desc_stats_reply(struct ds *string, const void *body,
1021 size_t len OVS_UNUSED, int verbosity OVS_UNUSED)
1023 const struct ofp_desc_stats *ods = body;
1025 ds_put_format(string, "Manufacturer: %.*s\n",
1026 (int) sizeof ods->mfr_desc, ods->mfr_desc);
1027 ds_put_format(string, "Hardware: %.*s\n",
1028 (int) sizeof ods->hw_desc, ods->hw_desc);
1029 ds_put_format(string, "Software: %.*s\n",
1030 (int) sizeof ods->sw_desc, ods->sw_desc);
1031 ds_put_format(string, "Serial Num: %.*s\n",
1032 (int) sizeof ods->serial_num, ods->serial_num);
1033 ds_put_format(string, "DP Description: %.*s\n",
1034 (int) sizeof ods->dp_desc, ods->dp_desc);
1038 ofp_flow_stats_request(struct ds *string, const void *oh,
1039 size_t len OVS_UNUSED, int verbosity)
1041 const struct ofp_flow_stats_request *fsr = oh;
1043 if (fsr->table_id == 0xff) {
1044 ds_put_format(string, " table_id=any, ");
1046 ds_put_format(string, " table_id=%"PRIu8", ", fsr->table_id);
1049 ofp_print_match(string, &fsr->match, verbosity);
1053 ofp_flow_stats_reply(struct ds *string, const void *body_, size_t len,
1056 const char *body = body_;
1057 const char *pos = body;
1059 const struct ofp_flow_stats *fs;
1060 ptrdiff_t bytes_left = body + len - pos;
1063 if (bytes_left < sizeof *fs) {
1064 if (bytes_left != 0) {
1065 ds_put_format(string, " ***%td leftover bytes at end***",
1071 fs = (const void *) pos;
1072 length = ntohs(fs->length);
1073 if (length < sizeof *fs) {
1074 ds_put_format(string, " ***length=%zu shorter than minimum %zu***",
1075 length, sizeof *fs);
1077 } else if (length > bytes_left) {
1078 ds_put_format(string,
1079 " ***length=%zu but only %td bytes left***",
1080 length, bytes_left);
1082 } else if ((length - sizeof *fs) % sizeof fs->actions[0]) {
1083 ds_put_format(string,
1084 " ***length=%zu has %zu bytes leftover in "
1087 (length - sizeof *fs) % sizeof fs->actions[0]);
1091 ds_put_format(string, " cookie=0x%"PRIx64", ", ntohll(fs->cookie));
1092 ds_put_format(string, "duration_sec=%"PRIu32"s, ",
1093 ntohl(fs->duration_sec));
1094 ds_put_format(string, "duration_nsec=%"PRIu32"ns, ",
1095 ntohl(fs->duration_nsec));
1096 ds_put_format(string, "table_id=%"PRIu8", ", fs->table_id);
1097 ds_put_format(string, "priority=%"PRIu16", ",
1098 fs->match.wildcards ? ntohs(fs->priority) : (uint16_t)-1);
1099 ds_put_format(string, "n_packets=%"PRIu64", ",
1100 ntohll(fs->packet_count));
1101 ds_put_format(string, "n_bytes=%"PRIu64", ", ntohll(fs->byte_count));
1102 if (fs->idle_timeout != htons(OFP_FLOW_PERMANENT)) {
1103 ds_put_format(string, "idle_timeout=%"PRIu16",",
1104 ntohs(fs->idle_timeout));
1106 if (fs->hard_timeout != htons(OFP_FLOW_PERMANENT)) {
1107 ds_put_format(string, "hard_timeout=%"PRIu16",",
1108 ntohs(fs->hard_timeout));
1110 ofp_print_match(string, &fs->match, verbosity);
1111 ofp_print_actions(string, fs->actions, length - sizeof *fs);
1112 ds_put_char(string, '\n');
1119 ofp_aggregate_stats_request(struct ds *string, const void *oh,
1120 size_t len OVS_UNUSED, int verbosity)
1122 const struct ofp_aggregate_stats_request *asr = oh;
1124 if (asr->table_id == 0xff) {
1125 ds_put_format(string, " table_id=any, ");
1127 ds_put_format(string, " table_id=%"PRIu8", ", asr->table_id);
1130 ofp_print_match(string, &asr->match, verbosity);
1134 ofp_aggregate_stats_reply(struct ds *string, const void *body_,
1135 size_t len OVS_UNUSED, int verbosity OVS_UNUSED)
1137 const struct ofp_aggregate_stats_reply *asr = body_;
1139 ds_put_format(string, " packet_count=%"PRIu64, ntohll(asr->packet_count));
1140 ds_put_format(string, " byte_count=%"PRIu64, ntohll(asr->byte_count));
1141 ds_put_format(string, " flow_count=%"PRIu32, ntohl(asr->flow_count));
1144 static void print_port_stat(struct ds *string, const char *leader,
1145 uint64_t stat, int more)
1147 ds_put_cstr(string, leader);
1149 ds_put_format(string, "%"PRIu64, stat);
1151 ds_put_char(string, '?');
1154 ds_put_cstr(string, ", ");
1156 ds_put_cstr(string, "\n");
1161 ofp_port_stats_request(struct ds *string, const void *body_,
1162 size_t len OVS_UNUSED, int verbosity OVS_UNUSED)
1164 const struct ofp_port_stats_request *psr = body_;
1165 ds_put_format(string, "port_no=%"PRIu16, ntohs(psr->port_no));
1169 ofp_port_stats_reply(struct ds *string, const void *body, size_t len,
1172 const struct ofp_port_stats *ps = body;
1173 size_t n = len / sizeof *ps;
1174 ds_put_format(string, " %zu ports\n", n);
1175 if (verbosity < 1) {
1180 ds_put_format(string, " port %2"PRIu16": ", ntohs(ps->port_no));
1182 ds_put_cstr(string, "rx ");
1183 print_port_stat(string, "pkts=", ntohll(ps->rx_packets), 1);
1184 print_port_stat(string, "bytes=", ntohll(ps->rx_bytes), 1);
1185 print_port_stat(string, "drop=", ntohll(ps->rx_dropped), 1);
1186 print_port_stat(string, "errs=", ntohll(ps->rx_errors), 1);
1187 print_port_stat(string, "frame=", ntohll(ps->rx_frame_err), 1);
1188 print_port_stat(string, "over=", ntohll(ps->rx_over_err), 1);
1189 print_port_stat(string, "crc=", ntohll(ps->rx_crc_err), 0);
1191 ds_put_cstr(string, " tx ");
1192 print_port_stat(string, "pkts=", ntohll(ps->tx_packets), 1);
1193 print_port_stat(string, "bytes=", ntohll(ps->tx_bytes), 1);
1194 print_port_stat(string, "drop=", ntohll(ps->tx_dropped), 1);
1195 print_port_stat(string, "errs=", ntohll(ps->tx_errors), 1);
1196 print_port_stat(string, "coll=", ntohll(ps->collisions), 0);
1201 ofp_table_stats_reply(struct ds *string, const void *body, size_t len,
1204 const struct ofp_table_stats *ts = body;
1205 size_t n = len / sizeof *ts;
1206 ds_put_format(string, " %zu tables\n", n);
1207 if (verbosity < 1) {
1212 char name[OFP_MAX_TABLE_NAME_LEN + 1];
1213 strncpy(name, ts->name, sizeof name);
1214 name[OFP_MAX_TABLE_NAME_LEN] = '\0';
1216 ds_put_format(string, " %d: %-8s: ", ts->table_id, name);
1217 ds_put_format(string, "wild=0x%05"PRIx32", ", ntohl(ts->wildcards));
1218 ds_put_format(string, "max=%6"PRIu32", ", ntohl(ts->max_entries));
1219 ds_put_format(string, "active=%"PRIu32"\n", ntohl(ts->active_count));
1220 ds_put_cstr(string, " ");
1221 ds_put_format(string, "lookup=%"PRIu64", ",
1222 ntohll(ts->lookup_count));
1223 ds_put_format(string, "matched=%"PRIu64"\n",
1224 ntohll(ts->matched_count));
1229 ofp_print_queue_name(struct ds *string, uint32_t queue_id)
1231 if (queue_id == OFPQ_ALL) {
1232 ds_put_cstr(string, "ALL");
1234 ds_put_format(string, "%"PRIu32, queue_id);
1239 ofp_queue_stats_request(struct ds *string, const void *body_,
1240 size_t len OVS_UNUSED, int verbosity OVS_UNUSED)
1242 const struct ofp_queue_stats_request *qsr = body_;
1244 ds_put_cstr(string, "port=");
1245 ofp_print_port_name(string, ntohs(qsr->port_no));
1247 ds_put_cstr(string, " queue=");
1248 ofp_print_queue_name(string, ntohl(qsr->queue_id));
1252 ofp_queue_stats_reply(struct ds *string, const void *body, size_t len,
1255 const struct ofp_queue_stats *qs = body;
1256 size_t n = len / sizeof *qs;
1257 ds_put_format(string, " %zu queues\n", n);
1258 if (verbosity < 1) {
1263 ds_put_cstr(string, " port ");
1264 ofp_print_port_name(string, ntohs(qs->port_no));
1265 ds_put_cstr(string, " queue ");
1266 ofp_print_queue_name(string, ntohl(qs->queue_id));
1267 ds_put_cstr(string, ": ");
1269 print_port_stat(string, "bytes=", ntohll(qs->tx_bytes), 1);
1270 print_port_stat(string, "pkts=", ntohll(qs->tx_packets), 1);
1271 print_port_stat(string, "errors=", ntohll(qs->tx_errors), 0);
1276 vendor_stat(struct ds *string, const void *body, size_t len,
1277 int verbosity OVS_UNUSED)
1279 ds_put_format(string, " vendor=%08"PRIx32, ntohl(*(uint32_t *) body));
1280 ds_put_format(string, " %zu bytes additional data",
1281 len - sizeof(uint32_t));
1284 enum stats_direction {
1290 print_stats(struct ds *string, int type, const void *body, size_t body_len,
1291 int verbosity, enum stats_direction direction)
1294 size_t min_body, max_body;
1295 void (*printer)(struct ds *, const void *, size_t len, int verbosity);
1301 struct stats_msg request;
1302 struct stats_msg reply;
1305 static const struct stats_type stats_types[] = {
1310 { 0, SIZE_MAX, ofp_desc_stats_reply },
1315 { sizeof(struct ofp_flow_stats_request),
1316 sizeof(struct ofp_flow_stats_request),
1317 ofp_flow_stats_request },
1318 { 0, SIZE_MAX, ofp_flow_stats_reply },
1323 { sizeof(struct ofp_aggregate_stats_request),
1324 sizeof(struct ofp_aggregate_stats_request),
1325 ofp_aggregate_stats_request },
1326 { sizeof(struct ofp_aggregate_stats_reply),
1327 sizeof(struct ofp_aggregate_stats_reply),
1328 ofp_aggregate_stats_reply },
1334 { 0, SIZE_MAX, ofp_table_stats_reply },
1339 { sizeof(struct ofp_port_stats_request),
1340 sizeof(struct ofp_port_stats_request),
1341 ofp_port_stats_request },
1342 { 0, SIZE_MAX, ofp_port_stats_reply },
1347 { sizeof(struct ofp_queue_stats_request),
1348 sizeof(struct ofp_queue_stats_request),
1349 ofp_queue_stats_request },
1350 { 0, SIZE_MAX, ofp_queue_stats_reply },
1355 { sizeof(uint32_t), SIZE_MAX, vendor_stat },
1356 { sizeof(uint32_t), SIZE_MAX, vendor_stat },
1366 const struct stats_type *s;
1367 const struct stats_msg *m;
1369 if (type >= ARRAY_SIZE(stats_types) || !stats_types[type].name) {
1370 ds_put_format(string, " ***unknown type %d***", type);
1373 for (s = stats_types; s->type >= 0; s++) {
1374 if (s->type == type) {
1378 ds_put_format(string, " type=%d(%s)\n", type, s->name);
1380 m = direction == REQUEST ? &s->request : &s->reply;
1381 if (body_len < m->min_body || body_len > m->max_body) {
1382 ds_put_format(string, " ***body_len=%zu not in %zu...%zu***",
1383 body_len, m->min_body, m->max_body);
1387 m->printer(string, body, body_len, verbosity);
1392 ofp_stats_request(struct ds *string, const void *oh, size_t len, int verbosity)
1394 const struct ofp_stats_request *srq = oh;
1397 ds_put_format(string, " ***unknown flags 0x%04"PRIx16"***",
1401 print_stats(string, ntohs(srq->type), srq->body,
1402 len - offsetof(struct ofp_stats_request, body),
1403 verbosity, REQUEST);
1407 ofp_stats_reply(struct ds *string, const void *oh, size_t len, int verbosity)
1409 const struct ofp_stats_reply *srp = oh;
1411 ds_put_cstr(string, " flags=");
1413 ds_put_cstr(string, "none");
1415 uint16_t flags = ntohs(srp->flags);
1416 if (flags & OFPSF_REPLY_MORE) {
1417 ds_put_cstr(string, "[more]");
1418 flags &= ~OFPSF_REPLY_MORE;
1421 ds_put_format(string, "[***unknown flags 0x%04"PRIx16"***]", flags);
1425 print_stats(string, ntohs(srp->type), srp->body,
1426 len - offsetof(struct ofp_stats_reply, body),
1431 ofp_echo(struct ds *string, const void *oh, size_t len, int verbosity)
1433 const struct ofp_header *hdr = oh;
1435 ds_put_format(string, " %zu bytes of payload\n", len - sizeof *hdr);
1436 if (verbosity > 1) {
1437 ds_put_hex_dump(string, hdr, len - sizeof *hdr, 0, true);
1441 struct openflow_packet {
1445 void (*printer)(struct ds *, const void *, size_t len, int verbosity);
1448 static const struct openflow_packet packets[] = {
1452 sizeof (struct ofp_header),
1456 OFPT_FEATURES_REQUEST,
1458 sizeof (struct ofp_header),
1462 OFPT_FEATURES_REPLY,
1464 sizeof (struct ofp_switch_features),
1465 ofp_print_switch_features,
1468 OFPT_GET_CONFIG_REQUEST,
1469 "get_config_request",
1470 sizeof (struct ofp_header),
1474 OFPT_GET_CONFIG_REPLY,
1476 sizeof (struct ofp_switch_config),
1477 ofp_print_switch_config,
1482 sizeof (struct ofp_switch_config),
1483 ofp_print_switch_config,
1488 offsetof(struct ofp_packet_in, data),
1494 sizeof (struct ofp_packet_out),
1500 sizeof (struct ofp_flow_mod),
1506 sizeof (struct ofp_flow_removed),
1507 ofp_print_flow_removed,
1512 sizeof (struct ofp_port_mod),
1518 sizeof (struct ofp_port_status),
1519 ofp_print_port_status
1524 sizeof (struct ofp_error_msg),
1525 ofp_print_error_msg,
1530 sizeof (struct ofp_stats_request),
1536 sizeof (struct ofp_stats_reply),
1542 sizeof (struct ofp_header),
1548 sizeof (struct ofp_header),
1554 sizeof (struct ofp_vendor_header),
1558 OFPT_BARRIER_REQUEST,
1560 sizeof (struct ofp_header),
1566 sizeof (struct ofp_header),
1571 /* Composes and returns a string representing the OpenFlow packet of 'len'
1572 * bytes at 'oh' at the given 'verbosity' level. 0 is a minimal amount of
1573 * verbosity and higher numbers increase verbosity. The caller is responsible
1574 * for freeing the string. */
1576 ofp_to_string(const void *oh_, size_t len, int verbosity)
1578 struct ds string = DS_EMPTY_INITIALIZER;
1579 const struct ofp_header *oh = oh_;
1580 const struct openflow_packet *pkt;
1582 if (len < sizeof(struct ofp_header)) {
1583 ds_put_cstr(&string, "OpenFlow packet too short:\n");
1584 ds_put_hex_dump(&string, oh, len, 0, true);
1585 return ds_cstr(&string);
1586 } else if (oh->version != OFP_VERSION) {
1587 ds_put_format(&string, "Bad OpenFlow version %"PRIu8":\n", oh->version);
1588 ds_put_hex_dump(&string, oh, len, 0, true);
1589 return ds_cstr(&string);
1592 for (pkt = packets; ; pkt++) {
1593 if (pkt >= &packets[ARRAY_SIZE(packets)]) {
1594 ds_put_format(&string, "Unknown OpenFlow packet type %"PRIu8":\n",
1596 ds_put_hex_dump(&string, oh, len, 0, true);
1597 return ds_cstr(&string);
1598 } else if (oh->type == pkt->type) {
1603 ds_put_format(&string, "%s (xid=0x%"PRIx32"):", pkt->name, ntohl(oh->xid));
1605 if (ntohs(oh->length) > len)
1606 ds_put_format(&string, " (***truncated to %zu bytes from %"PRIu16"***)",
1607 len, ntohs(oh->length));
1608 else if (ntohs(oh->length) < len) {
1609 ds_put_format(&string, " (***only uses %"PRIu16" bytes out of %zu***)\n",
1610 ntohs(oh->length), len);
1611 len = ntohs(oh->length);
1614 if (len < pkt->min_size) {
1615 ds_put_format(&string, " (***length=%zu < min_size=%zu***)\n",
1616 len, pkt->min_size);
1617 } else if (!pkt->printer) {
1618 if (len > sizeof *oh) {
1619 ds_put_format(&string, " length=%"PRIu16" (decoder not implemented)\n",
1623 pkt->printer(&string, oh, len, verbosity);
1625 if (verbosity >= 3) {
1626 ds_put_hex_dump(&string, oh, len, 0, true);
1628 if (string.string[string.length - 1] != '\n') {
1629 ds_put_char(&string, '\n');
1631 return ds_cstr(&string);
1634 /* Returns the name for the specified OpenFlow message type as a string,
1635 * e.g. "OFPT_FEATURES_REPLY". If no name is known, the string returned is a
1636 * hex number, e.g. "0x55".
1638 * The caller must free the returned string when it is no longer needed. */
1640 ofp_message_type_to_string(uint8_t type)
1642 struct ds s = DS_EMPTY_INITIALIZER;
1643 const struct openflow_packet *pkt;
1644 for (pkt = packets; ; pkt++) {
1645 if (pkt >= &packets[ARRAY_SIZE(packets)]) {
1646 ds_put_format(&s, "0x%02"PRIx8, type);
1648 } else if (type == pkt->type) {
1651 ds_put_cstr(&s, "OFPT_");
1652 for (p = pkt->name; *p; p++) {
1653 ds_put_char(&s, toupper((unsigned char) *p));
1662 print_and_free(FILE *stream, char *string)
1664 fputs(string, stream);
1668 /* Pretty-print the OpenFlow packet of 'len' bytes at 'oh' to 'stream' at the
1669 * given 'verbosity' level. 0 is a minimal amount of verbosity and higher
1670 * numbers increase verbosity. */
1672 ofp_print(FILE *stream, const void *oh, size_t len, int verbosity)
1674 print_and_free(stream, ofp_to_string(oh, len, verbosity));
1677 /* Dumps the contents of the Ethernet frame in the 'len' bytes starting at
1678 * 'data' to 'stream' using tcpdump. 'total_len' specifies the full length of
1679 * the Ethernet frame (of which 'len' bytes were captured).
1681 * This starts and kills a tcpdump subprocess so it's quite expensive. */
1683 ofp_print_packet(FILE *stream, const void *data, size_t len, size_t total_len)
1685 print_and_free(stream, ofp_packet_to_string(data, len, total_len));