2 * Copyright (c) 2008, 2009, 2010, 2011, 2012 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.
21 #include <sys/socket.h>
27 #include <sys/fcntl.h>
31 #include "byte-order.h"
32 #include "classifier.h"
33 #include "command-line.h"
37 #include "dynamic-string.h"
41 #include "ofp-errors.h"
42 #include "ofp-parse.h"
43 #include "ofp-print.h"
46 #include "ofproto/ofproto.h"
47 #include "openflow/nicira-ext.h"
48 #include "openflow/openflow.h"
50 #include "poll-loop.h"
52 #include "stream-ssl.h"
59 VLOG_DEFINE_THIS_MODULE(ofctl);
61 /* --strict: Use strict matching for flow mod commands? Additionally governs
62 * use of nx_pull_match() instead of nx_pull_match_loose() in parse-nx-match.
66 /* --readd: If true, on replace-flows, re-add even flows that have not changed
67 * (to reset flow counters). */
70 /* -F, --flow-format: Flow format to use. Either one of NXFF_* to force a
71 * particular flow format or -1 to let ovs-ofctl choose intelligently. */
72 static int preferred_flow_format = -1;
74 /* -P, --packet-in-format: Packet IN format to use in monitor and snoop
75 * commands. Either one of NXPIF_* to force a particular packet_in format, or
76 * -1 to let ovs-ofctl choose the default. */
77 static int preferred_packet_in_format = -1;
79 /* -m, --more: Additional verbosity for ofp-print functions. */
82 static const struct command all_commands[];
84 static void usage(void) NO_RETURN;
85 static void parse_options(int argc, char *argv[]);
88 main(int argc, char *argv[])
90 set_program_name(argv[0]);
91 parse_options(argc, argv);
92 signal(SIGPIPE, SIG_IGN);
93 run_command(argc - optind, argv + optind, all_commands);
98 parse_options(int argc, char *argv[])
101 OPT_STRICT = UCHAR_MAX + 1,
106 static struct option long_options[] = {
107 {"timeout", required_argument, NULL, 't'},
108 {"strict", no_argument, NULL, OPT_STRICT},
109 {"readd", no_argument, NULL, OPT_READD},
110 {"flow-format", required_argument, NULL, 'F'},
111 {"packet-in-format", required_argument, NULL, 'P'},
112 {"more", no_argument, NULL, 'm'},
113 {"help", no_argument, NULL, 'h'},
114 {"version", no_argument, NULL, 'V'},
117 STREAM_SSL_LONG_OPTIONS,
120 char *short_options = long_options_to_short_options(long_options);
123 unsigned long int timeout;
126 c = getopt_long(argc, argv, short_options, long_options, NULL);
133 timeout = strtoul(optarg, NULL, 10);
135 ovs_fatal(0, "value %s on -t or --timeout is not at least 1",
143 preferred_flow_format = ofputil_flow_format_from_string(optarg);
144 if (preferred_flow_format < 0) {
145 ovs_fatal(0, "unknown flow format `%s'", optarg);
150 preferred_packet_in_format =
151 ofputil_packet_in_format_from_string(optarg);
152 if (preferred_packet_in_format < 0) {
153 ovs_fatal(0, "unknown packet-in format `%s'", optarg);
165 ovs_print_version(OFP_VERSION, OFP_VERSION);
176 DAEMON_OPTION_HANDLERS
178 STREAM_SSL_OPTION_HANDLERS
193 printf("%s: OpenFlow switch management utility\n"
194 "usage: %s [OPTIONS] COMMAND [ARG...]\n"
195 "\nFor OpenFlow switches:\n"
196 " show SWITCH show OpenFlow information\n"
197 " dump-desc SWITCH print switch description\n"
198 " dump-tables SWITCH print table stats\n"
199 " mod-port SWITCH IFACE ACT modify port behavior\n"
200 " get-frags SWITCH print fragment handling behavior\n"
201 " set-frags SWITCH FRAG_MODE set fragment handling behavior\n"
202 " dump-ports SWITCH [PORT] print port statistics\n"
203 " dump-flows SWITCH print all flow entries\n"
204 " dump-flows SWITCH FLOW print matching FLOWs\n"
205 " dump-aggregate SWITCH print aggregate flow statistics\n"
206 " dump-aggregate SWITCH FLOW print aggregate stats for FLOWs\n"
207 " queue-stats SWITCH [PORT [QUEUE]] dump queue stats\n"
208 " add-flow SWITCH FLOW add flow described by FLOW\n"
209 " add-flows SWITCH FILE add flows from FILE\n"
210 " mod-flows SWITCH FLOW modify actions of matching FLOWs\n"
211 " del-flows SWITCH [FLOW] delete matching FLOWs\n"
212 " replace-flows SWITCH FILE replace flows with those in FILE\n"
213 " diff-flows SOURCE1 SOURCE2 compare flows from two sources\n"
214 " packet-out SWITCH IN_PORT ACTIONS PACKET...\n"
215 " execute ACTIONS on PACKET\n"
216 " monitor SWITCH [MISSLEN] [invalid_ttl]\n"
217 " print packets received from SWITCH\n"
218 " snoop SWITCH snoop on SWITCH and its controller\n"
219 "\nFor OpenFlow switches and controllers:\n"
220 " probe TARGET probe whether TARGET is up\n"
221 " ping TARGET [N] latency of N-byte echos\n"
222 " benchmark TARGET N COUNT bandwidth of COUNT N-byte echos\n"
223 "where SWITCH or TARGET is an active OpenFlow connection method.\n",
224 program_name, program_name);
225 vconn_usage(true, false, false);
228 printf("\nOther options:\n"
229 " --strict use strict match for flow commands\n"
230 " --readd replace flows that haven't changed\n"
231 " -F, --flow-format=FORMAT force particular flow format\n"
232 " -P, --packet-in-format=FRMT force particular packet in format\n"
233 " -m, --more be more verbose printing OpenFlow\n"
234 " -t, --timeout=SECS give up after SECS seconds\n"
235 " -h, --help display this help message\n"
236 " -V, --version display version information\n");
241 ofctl_exit(struct unixctl_conn *conn, int argc OVS_UNUSED,
242 const char *argv[] OVS_UNUSED, void *exiting_)
244 bool *exiting = exiting_;
246 unixctl_command_reply(conn, 200, "");
249 static void run(int retval, const char *message, ...)
252 static void run(int retval, const char *message, ...)
257 va_start(args, message);
258 ovs_fatal_valist(retval, message, args);
262 /* Generic commands. */
265 open_vconn_socket(const char *name, struct vconn **vconnp)
267 char *vconn_name = xasprintf("unix:%s", name);
268 VLOG_DBG("connecting to %s", vconn_name);
269 run(vconn_open_block(vconn_name, OFP_VERSION, vconnp),
270 "connecting to %s", vconn_name);
275 open_vconn__(const char *name, const char *default_suffix,
276 struct vconn **vconnp)
278 char *datapath_name, *datapath_type, *socket_name;
282 bridge_path = xasprintf("%s/%s.%s", ovs_rundir(), name, default_suffix);
284 ofproto_parse_name(name, &datapath_name, &datapath_type);
285 socket_name = xasprintf("%s/%s.%s",
286 ovs_rundir(), datapath_name, default_suffix);
290 if (strchr(name, ':')) {
291 run(vconn_open_block(name, OFP_VERSION, vconnp),
292 "connecting to %s", name);
293 } else if (!stat(name, &s) && S_ISSOCK(s.st_mode)) {
294 open_vconn_socket(name, vconnp);
295 } else if (!stat(bridge_path, &s) && S_ISSOCK(s.st_mode)) {
296 open_vconn_socket(bridge_path, vconnp);
297 } else if (!stat(socket_name, &s)) {
298 if (!S_ISSOCK(s.st_mode)) {
299 ovs_fatal(0, "cannot connect to %s: %s is not a socket",
302 open_vconn_socket(socket_name, vconnp);
304 ovs_fatal(0, "%s is not a bridge or a socket", name);
312 open_vconn(const char *name, struct vconn **vconnp)
314 return open_vconn__(name, "mgmt", vconnp);
318 alloc_stats_request(size_t rq_len, uint16_t type, struct ofpbuf **bufferp)
320 struct ofp_stats_msg *rq;
322 rq = make_openflow(rq_len, OFPT_STATS_REQUEST, bufferp);
323 rq->type = htons(type);
324 rq->flags = htons(0);
329 send_openflow_buffer(struct vconn *vconn, struct ofpbuf *buffer)
331 update_openflow_length(buffer);
332 run(vconn_send_block(vconn, buffer), "failed to send packet to switch");
336 dump_transaction(const char *vconn_name, struct ofpbuf *request)
339 struct ofpbuf *reply;
341 update_openflow_length(request);
342 open_vconn(vconn_name, &vconn);
343 run(vconn_transact(vconn, request, &reply), "talking to %s", vconn_name);
344 ofp_print(stdout, reply->data, reply->size, verbosity + 1);
349 dump_trivial_transaction(const char *vconn_name, uint8_t request_type)
351 struct ofpbuf *request;
352 make_openflow(sizeof(struct ofp_header), request_type, &request);
353 dump_transaction(vconn_name, request);
357 dump_stats_transaction(const char *vconn_name, struct ofpbuf *request)
359 ovs_be32 send_xid = ((struct ofp_header *) request->data)->xid;
363 open_vconn(vconn_name, &vconn);
364 send_openflow_buffer(vconn, request);
367 struct ofpbuf *reply;
369 run(vconn_recv_block(vconn, &reply), "OpenFlow packet receive failed");
370 recv_xid = ((struct ofp_header *) reply->data)->xid;
371 if (send_xid == recv_xid) {
372 struct ofp_stats_msg *osm;
374 ofp_print(stdout, reply->data, reply->size, verbosity + 1);
376 osm = ofpbuf_at(reply, 0, sizeof *osm);
377 done = !osm || !(ntohs(osm->flags) & OFPSF_REPLY_MORE);
379 VLOG_DBG("received reply with xid %08"PRIx32" "
380 "!= expected %08"PRIx32, recv_xid, send_xid);
382 ofpbuf_delete(reply);
388 dump_trivial_stats_transaction(const char *vconn_name, uint8_t stats_type)
390 struct ofpbuf *request;
391 alloc_stats_request(sizeof(struct ofp_stats_msg), stats_type, &request);
392 dump_stats_transaction(vconn_name, request);
395 /* Sends 'request', which should be a request that only has a reply if an error
396 * occurs, and waits for it to succeed or fail. If an error does occur, prints
397 * it and exits with an error.
399 * Destroys all of the 'requests'. */
401 transact_multiple_noreply(struct vconn *vconn, struct list *requests)
403 struct ofpbuf *request, *reply;
405 LIST_FOR_EACH (request, list_node, requests) {
406 update_openflow_length(request);
409 run(vconn_transact_multiple_noreply(vconn, requests, &reply),
410 "talking to %s", vconn_get_name(vconn));
412 ofp_print(stderr, reply->data, reply->size, verbosity + 2);
415 ofpbuf_delete(reply);
418 /* Sends 'request', which should be a request that only has a reply if an error
419 * occurs, and waits for it to succeed or fail. If an error does occur, prints
420 * it and exits with an error.
422 * Destroys 'request'. */
424 transact_noreply(struct vconn *vconn, struct ofpbuf *request)
426 struct list requests;
428 list_init(&requests);
429 list_push_back(&requests, &request->list_node);
430 transact_multiple_noreply(vconn, &requests);
434 fetch_switch_config(struct vconn *vconn, struct ofp_switch_config *config_)
436 struct ofp_switch_config *config;
437 struct ofp_header *header;
438 struct ofpbuf *request;
439 struct ofpbuf *reply;
441 make_openflow(sizeof(struct ofp_header), OFPT_GET_CONFIG_REQUEST,
443 run(vconn_transact(vconn, request, &reply),
444 "talking to %s", vconn_get_name(vconn));
446 header = reply->data;
447 if (header->type != OFPT_GET_CONFIG_REPLY ||
448 header->length != htons(sizeof *config)) {
449 ovs_fatal(0, "%s: bad reply to config request", vconn_get_name(vconn));
452 config = reply->data;
455 ofpbuf_delete(reply);
459 set_switch_config(struct vconn *vconn, struct ofp_switch_config *config_)
461 struct ofp_switch_config *config;
462 struct ofp_header save_header;
463 struct ofpbuf *request;
465 config = make_openflow(sizeof *config, OFPT_SET_CONFIG, &request);
466 save_header = config->header;
468 config->header = save_header;
470 transact_noreply(vconn, request);
474 do_show(int argc OVS_UNUSED, char *argv[])
476 dump_trivial_transaction(argv[1], OFPT_FEATURES_REQUEST);
477 dump_trivial_transaction(argv[1], OFPT_GET_CONFIG_REQUEST);
481 do_dump_desc(int argc OVS_UNUSED, char *argv[])
483 dump_trivial_stats_transaction(argv[1], OFPST_DESC);
487 do_dump_tables(int argc OVS_UNUSED, char *argv[])
489 dump_trivial_stats_transaction(argv[1], OFPST_TABLE);
492 /* Opens a connection to 'vconn_name', fetches the ofp_phy_port structure for
493 * 'port_name' (which may be a port name or number), and copies it into
496 fetch_ofp_phy_port(const char *vconn_name, const char *port_name,
497 struct ofp_phy_port *oppp)
499 struct ofpbuf *request, *reply;
500 struct ofp_switch_features *osf;
501 unsigned int port_no;
506 /* Try to interpret the argument as a port number. */
507 if (!str_to_uint(port_name, 10, &port_no)) {
511 /* Fetch the switch's ofp_switch_features. */
512 make_openflow(sizeof(struct ofp_header), OFPT_FEATURES_REQUEST, &request);
513 open_vconn(vconn_name, &vconn);
514 run(vconn_transact(vconn, request, &reply), "talking to %s", vconn_name);
517 if (reply->size < sizeof *osf) {
518 ovs_fatal(0, "%s: received too-short features reply (only %zu bytes)",
519 vconn_name, reply->size);
521 n_ports = (reply->size - sizeof *osf) / sizeof *osf->ports;
523 for (port_idx = 0; port_idx < n_ports; port_idx++) {
524 const struct ofp_phy_port *opp = &osf->ports[port_idx];
526 if (port_no != UINT_MAX
527 ? htons(port_no) == opp->port_no
528 : !strncmp(opp->name, port_name, sizeof opp->name)) {
530 ofpbuf_delete(reply);
535 ovs_fatal(0, "%s: couldn't find port `%s'", vconn_name, port_name);
538 /* Returns the port number corresponding to 'port_name' (which may be a port
539 * name or number) within the switch 'vconn_name'. */
541 str_to_port_no(const char *vconn_name, const char *port_name)
543 unsigned int port_no;
545 if (str_to_uint(port_name, 10, &port_no)) {
548 struct ofp_phy_port opp;
550 fetch_ofp_phy_port(vconn_name, port_name, &opp);
551 return ntohs(opp.port_no);
556 try_set_flow_format(struct vconn *vconn, enum nx_flow_format flow_format)
558 struct ofpbuf *sff, *reply;
560 sff = ofputil_make_set_flow_format(flow_format);
561 run(vconn_transact_noreply(vconn, sff, &reply),
562 "talking to %s", vconn_get_name(vconn));
564 char *s = ofp_to_string(reply->data, reply->size, 2);
565 VLOG_DBG("%s: failed to set flow format %s, controller replied: %s",
566 vconn_get_name(vconn),
567 ofputil_flow_format_to_string(flow_format),
570 ofpbuf_delete(reply);
577 set_flow_format(struct vconn *vconn, enum nx_flow_format flow_format)
579 struct ofpbuf *sff = ofputil_make_set_flow_format(flow_format);
580 transact_noreply(vconn, sff);
581 VLOG_DBG("%s: using user-specified flow format %s",
582 vconn_get_name(vconn),
583 ofputil_flow_format_to_string(flow_format));
586 static enum nx_flow_format
587 negotiate_highest_flow_format(struct vconn *vconn,
588 enum nx_flow_format min_format)
590 if (preferred_flow_format != -1) {
591 if (preferred_flow_format < min_format) {
592 ovs_fatal(0, "%s: cannot use requested flow format %s for "
593 "specified flow", vconn_get_name(vconn),
594 ofputil_flow_format_to_string(min_format));
597 set_flow_format(vconn, preferred_flow_format);
598 return preferred_flow_format;
600 enum nx_flow_format flow_format;
602 if (try_set_flow_format(vconn, NXFF_NXM)) {
603 flow_format = NXFF_NXM;
605 flow_format = NXFF_OPENFLOW10;
608 if (flow_format < min_format) {
609 ovs_fatal(0, "%s: cannot use switch's most advanced flow format "
610 "%s for specified flow", vconn_get_name(vconn),
611 ofputil_flow_format_to_string(min_format));
614 VLOG_DBG("%s: negotiated flow format %s", vconn_get_name(vconn),
615 ofputil_flow_format_to_string(flow_format));
621 do_dump_flows__(int argc, char *argv[], bool aggregate)
623 enum nx_flow_format min_flow_format, flow_format;
624 struct ofputil_flow_stats_request fsr;
625 struct ofpbuf *request;
628 parse_ofp_flow_stats_request_str(&fsr, aggregate, argc > 2 ? argv[2] : "");
630 open_vconn(argv[1], &vconn);
631 min_flow_format = ofputil_min_flow_format(&fsr.match);
632 if (fsr.cookie_mask != htonll(0)) {
633 min_flow_format = NXFF_NXM;
635 flow_format = negotiate_highest_flow_format(vconn, min_flow_format);
636 request = ofputil_encode_flow_stats_request(&fsr, flow_format);
637 dump_stats_transaction(argv[1], request);
642 do_dump_flows(int argc, char *argv[])
644 return do_dump_flows__(argc, argv, false);
648 do_dump_aggregate(int argc, char *argv[])
650 return do_dump_flows__(argc, argv, true);
654 do_queue_stats(int argc, char *argv[])
656 struct ofp_queue_stats_request *req;
657 struct ofpbuf *request;
659 req = alloc_stats_request(sizeof *req, OFPST_QUEUE, &request);
661 if (argc > 2 && argv[2][0] && strcasecmp(argv[2], "all")) {
662 req->port_no = htons(str_to_port_no(argv[1], argv[2]));
664 req->port_no = htons(OFPP_ALL);
666 if (argc > 3 && argv[3][0] && strcasecmp(argv[3], "all")) {
667 req->queue_id = htonl(atoi(argv[3]));
669 req->queue_id = htonl(OFPQ_ALL);
672 memset(req->pad, 0, sizeof req->pad);
674 dump_stats_transaction(argv[1], request);
677 /* Sets up the flow format for a vconn that will be used to modify the flow
678 * table. Returns the flow format used, after possibly adding an OpenFlow
679 * request to 'requests'.
681 * If 'preferred_flow_format' is -1, returns NXFF_OPENFLOW10 without modifying
682 * 'requests', since NXFF_OPENFLOW10 is the default flow format for any
683 * OpenFlow connection.
685 * If 'preferred_flow_format' is a specific format, adds a request to set that
686 * format to 'requests' and returns the format. */
687 static enum nx_flow_format
688 set_initial_format_for_flow_mod(struct list *requests)
690 if (preferred_flow_format < 0) {
691 return NXFF_OPENFLOW10;
695 sff = ofputil_make_set_flow_format(preferred_flow_format);
696 list_push_back(requests, &sff->list_node);
697 return preferred_flow_format;
701 /* Checks that 'flow_format' is acceptable as a flow format after a flow_mod
702 * operation, given the global 'preferred_flow_format'. */
704 check_final_format_for_flow_mod(enum nx_flow_format flow_format)
706 if (preferred_flow_format >= 0 && flow_format > preferred_flow_format) {
707 ovs_fatal(0, "flow cannot be expressed in flow format %s "
708 "(flow format %s or better is required)",
709 ofputil_flow_format_to_string(preferred_flow_format),
710 ofputil_flow_format_to_string(flow_format));
715 do_flow_mod_file__(int argc OVS_UNUSED, char *argv[], uint16_t command)
717 enum nx_flow_format flow_format;
718 bool flow_mod_table_id;
719 struct list requests;
723 file = !strcmp(argv[2], "-") ? stdin : fopen(argv[2], "r");
725 ovs_fatal(errno, "%s: open", argv[2]);
728 list_init(&requests);
729 flow_format = set_initial_format_for_flow_mod(&requests);
730 flow_mod_table_id = false;
732 open_vconn(argv[1], &vconn);
733 while (parse_ofp_flow_mod_file(&requests, &flow_format, &flow_mod_table_id,
735 check_final_format_for_flow_mod(flow_format);
736 transact_multiple_noreply(vconn, &requests);
746 do_flow_mod__(int argc, char *argv[], uint16_t command)
748 enum nx_flow_format flow_format;
749 bool flow_mod_table_id;
750 struct list requests;
753 if (argc > 2 && !strcmp(argv[2], "-")) {
754 do_flow_mod_file__(argc, argv, command);
758 list_init(&requests);
759 flow_format = set_initial_format_for_flow_mod(&requests);
760 flow_mod_table_id = false;
762 parse_ofp_flow_mod_str(&requests, &flow_format, &flow_mod_table_id,
763 argc > 2 ? argv[2] : "", command, false);
764 check_final_format_for_flow_mod(flow_format);
766 open_vconn(argv[1], &vconn);
767 transact_multiple_noreply(vconn, &requests);
772 do_add_flow(int argc, char *argv[])
774 do_flow_mod__(argc, argv, OFPFC_ADD);
778 do_add_flows(int argc, char *argv[])
780 do_flow_mod_file__(argc, argv, OFPFC_ADD);
784 do_mod_flows(int argc, char *argv[])
786 do_flow_mod__(argc, argv, strict ? OFPFC_MODIFY_STRICT : OFPFC_MODIFY);
790 do_del_flows(int argc, char *argv[])
792 do_flow_mod__(argc, argv, strict ? OFPFC_DELETE_STRICT : OFPFC_DELETE);
796 set_packet_in_format(struct vconn *vconn,
797 enum nx_packet_in_format packet_in_format)
799 struct ofpbuf *spif = ofputil_make_set_packet_in_format(packet_in_format);
800 transact_noreply(vconn, spif);
801 VLOG_DBG("%s: using user-specified packet in format %s",
802 vconn_get_name(vconn),
803 ofputil_packet_in_format_to_string(packet_in_format));
807 monitor_set_invalid_ttl_to_controller(struct vconn *vconn)
809 struct ofp_switch_config config;
810 enum ofp_config_flags flags;
812 fetch_switch_config(vconn, &config);
813 flags = ntohs(config.flags);
814 if (!(flags & OFPC_INVALID_TTL_TO_CONTROLLER)) {
815 /* Set the invalid ttl config. */
816 flags |= OFPC_INVALID_TTL_TO_CONTROLLER;
818 config.flags = htons(flags);
819 set_switch_config(vconn, &config);
821 /* Then retrieve the configuration to see if it really took. OpenFlow
822 * doesn't define error reporting for bad modes, so this is all we can
824 fetch_switch_config(vconn, &config);
825 flags = ntohs(config.flags);
826 if (!(flags & OFPC_INVALID_TTL_TO_CONTROLLER)) {
827 ovs_fatal(0, "setting invalid_ttl_to_controller failed (this "
828 "switch probably doesn't support mode)");
835 /* Converts hex digits in 'hex' to an OpenFlow message in '*msgp'. The
836 * caller must free '*msgp'. On success, returns NULL. On failure, returns
837 * an error message and stores NULL in '*msgp'. */
839 openflow_from_hex(const char *hex, struct ofpbuf **msgp)
841 struct ofp_header *oh;
844 msg = ofpbuf_new(strlen(hex) / 2);
847 if (ofpbuf_put_hex(msg, hex, NULL)[0] != '\0') {
849 return "Trailing garbage in hex data";
852 if (msg->size < sizeof(struct ofp_header)) {
854 return "Message too short for OpenFlow";
858 if (msg->size != ntohs(oh->length)) {
860 return "Message size does not match length in OpenFlow header";
868 ofctl_send(struct unixctl_conn *conn, int argc,
869 const char *argv[], void *vconn_)
871 struct vconn *vconn = vconn_;
878 for (i = 1; i < argc; i++) {
879 const char *error_msg;
883 error_msg = openflow_from_hex(argv[i], &msg);
885 ds_put_format(&reply, "%s\n", error_msg);
890 fprintf(stderr, "send: ");
891 ofp_print(stderr, msg->data, msg->size, verbosity);
893 error = vconn_send_block(vconn, msg);
896 ds_put_format(&reply, "%s\n", strerror(error));
899 ds_put_cstr(&reply, "sent\n");
902 unixctl_command_reply(conn, ok ? 200 : 501, ds_cstr(&reply));
907 struct vconn *vconn; /* OpenFlow connection for sending barrier. */
908 struct unixctl_conn *conn; /* Connection waiting for barrier response. */
912 ofctl_barrier(struct unixctl_conn *conn, int argc OVS_UNUSED,
913 const char *argv[] OVS_UNUSED, void *aux_)
915 struct barrier_aux *aux = aux_;
920 unixctl_command_reply(conn, 501, "already waiting for barrier reply");
924 msg = ofputil_encode_barrier_request();
925 fprintf(stderr, "send: ");
926 ofp_print(stderr, msg->data, msg->size, verbosity);
928 error = vconn_send_block(aux->vconn, msg);
931 unixctl_command_reply(conn, 501, strerror(error));
938 ofctl_set_output_file(struct unixctl_conn *conn, int argc OVS_UNUSED,
939 const char *argv[], void *aux OVS_UNUSED)
943 fd = open(argv[1], O_CREAT | O_TRUNC | O_WRONLY, 0666);
945 unixctl_command_reply(conn, 501, strerror(errno));
950 dup2(fd, STDERR_FILENO);
952 unixctl_command_reply(conn, 200, "");
956 monitor_vconn(struct vconn *vconn)
958 struct barrier_aux barrier_aux = { vconn, NULL };
959 struct unixctl_server *server;
960 bool exiting = false;
963 daemon_save_fd(STDERR_FILENO);
965 error = unixctl_server_create(NULL, &server);
967 ovs_fatal(error, "failed to create unixctl server");
969 unixctl_command_register("exit", "", 0, 0, ofctl_exit, &exiting);
970 unixctl_command_register("ofctl/send", "OFMSG...", 1, INT_MAX,
972 unixctl_command_register("ofctl/barrier", "", 0, 0,
973 ofctl_barrier, &barrier_aux);
974 unixctl_command_register("ofctl/set-output-file", "FILE", 1, 1,
975 ofctl_set_output_file, NULL);
976 daemonize_complete();
982 unixctl_server_run(server);
987 retval = vconn_recv(vconn, &b);
988 if (retval == EAGAIN) {
991 msg_type = ((const struct ofp_header *) b->data)->type;
993 run(retval, "vconn_recv");
994 ofp_print(stderr, b->data, b->size, verbosity + 2);
997 if (barrier_aux.conn && msg_type == OFPT_BARRIER_REPLY) {
998 unixctl_command_reply(barrier_aux.conn, 200, "");
999 barrier_aux.conn = NULL;
1008 vconn_run_wait(vconn);
1009 vconn_recv_wait(vconn);
1010 unixctl_server_wait(server);
1014 unixctl_server_destroy(server);
1018 do_monitor(int argc, char *argv[])
1020 struct vconn *vconn;
1022 open_vconn(argv[1], &vconn);
1024 struct ofp_switch_config config;
1026 fetch_switch_config(vconn, &config);
1027 config.miss_send_len = htons(atoi(argv[2]));
1028 set_switch_config(vconn, &config);
1031 if (!strcmp(argv[3], "invalid_ttl")) {
1032 monitor_set_invalid_ttl_to_controller(vconn);
1035 if (preferred_packet_in_format >= 0) {
1036 set_packet_in_format(vconn, preferred_packet_in_format);
1038 struct ofpbuf *spif, *reply;
1040 spif = ofputil_make_set_packet_in_format(NXPIF_NXM);
1041 run(vconn_transact_noreply(vconn, spif, &reply),
1042 "talking to %s", vconn_get_name(vconn));
1044 char *s = ofp_to_string(reply->data, reply->size, 2);
1045 VLOG_DBG("%s: failed to set packet in format to nxm, controller"
1046 " replied: %s. Falling back to the switch default.",
1047 vconn_get_name(vconn), s);
1049 ofpbuf_delete(reply);
1053 monitor_vconn(vconn);
1057 do_snoop(int argc OVS_UNUSED, char *argv[])
1059 struct vconn *vconn;
1061 open_vconn__(argv[1], "snoop", &vconn);
1062 monitor_vconn(vconn);
1066 do_dump_ports(int argc, char *argv[])
1068 struct ofp_port_stats_request *req;
1069 struct ofpbuf *request;
1072 req = alloc_stats_request(sizeof *req, OFPST_PORT, &request);
1073 port = argc > 2 ? str_to_port_no(argv[1], argv[2]) : OFPP_NONE;
1074 req->port_no = htons(port);
1075 dump_stats_transaction(argv[1], request);
1079 do_probe(int argc OVS_UNUSED, char *argv[])
1081 struct ofpbuf *request;
1082 struct vconn *vconn;
1083 struct ofpbuf *reply;
1085 make_openflow(sizeof(struct ofp_header), OFPT_ECHO_REQUEST, &request);
1086 open_vconn(argv[1], &vconn);
1087 run(vconn_transact(vconn, request, &reply), "talking to %s", argv[1]);
1088 if (reply->size != sizeof(struct ofp_header)) {
1089 ovs_fatal(0, "reply does not match request");
1091 ofpbuf_delete(reply);
1096 do_packet_out(int argc, char *argv[])
1098 struct ofputil_packet_out po;
1099 struct ofpbuf actions;
1100 struct vconn *vconn;
1103 ofpbuf_init(&actions, sizeof(union ofp_action));
1104 parse_ofp_actions(argv[3], &actions);
1106 po.buffer_id = UINT32_MAX;
1107 po.in_port = (!strcasecmp(argv[2], "none") ? OFPP_NONE
1108 : !strcasecmp(argv[2], "local") ? OFPP_LOCAL
1109 : str_to_port_no(argv[1], argv[2]));
1110 po.actions = actions.data;
1111 po.n_actions = actions.size / sizeof(union ofp_action);
1113 open_vconn(argv[1], &vconn);
1114 for (i = 4; i < argc; i++) {
1115 struct ofpbuf *packet, *opo;
1116 const char *error_msg;
1118 error_msg = eth_from_hex(argv[i], &packet);
1120 ovs_fatal(0, "%s", error_msg);
1123 po.packet = packet->data;
1124 po.packet_len = packet->size;
1125 opo = ofputil_encode_packet_out(&po);
1126 transact_noreply(vconn, opo);
1127 ofpbuf_delete(packet);
1133 do_mod_port(int argc OVS_UNUSED, char *argv[])
1135 struct ofp_port_mod *opm;
1136 struct ofp_phy_port opp;
1137 struct ofpbuf *request;
1138 struct vconn *vconn;
1140 fetch_ofp_phy_port(argv[1], argv[2], &opp);
1142 opm = make_openflow(sizeof(struct ofp_port_mod), OFPT_PORT_MOD, &request);
1143 opm->port_no = opp.port_no;
1144 memcpy(opm->hw_addr, opp.hw_addr, sizeof opm->hw_addr);
1145 opm->config = htonl(0);
1146 opm->mask = htonl(0);
1147 opm->advertise = htonl(0);
1149 if (!strcasecmp(argv[3], "up")) {
1150 opm->mask |= htonl(OFPPC_PORT_DOWN);
1151 } else if (!strcasecmp(argv[3], "down")) {
1152 opm->mask |= htonl(OFPPC_PORT_DOWN);
1153 opm->config |= htonl(OFPPC_PORT_DOWN);
1154 } else if (!strcasecmp(argv[3], "flood")) {
1155 opm->mask |= htonl(OFPPC_NO_FLOOD);
1156 } else if (!strcasecmp(argv[3], "noflood")) {
1157 opm->mask |= htonl(OFPPC_NO_FLOOD);
1158 opm->config |= htonl(OFPPC_NO_FLOOD);
1159 } else if (!strcasecmp(argv[3], "forward")) {
1160 opm->mask |= htonl(OFPPC_NO_FWD);
1161 } else if (!strcasecmp(argv[3], "noforward")) {
1162 opm->mask |= htonl(OFPPC_NO_FWD);
1163 opm->config |= htonl(OFPPC_NO_FWD);
1165 ovs_fatal(0, "unknown mod-port command '%s'", argv[3]);
1168 open_vconn(argv[1], &vconn);
1169 transact_noreply(vconn, request);
1174 do_get_frags(int argc OVS_UNUSED, char *argv[])
1176 struct ofp_switch_config config;
1177 struct vconn *vconn;
1179 open_vconn(argv[1], &vconn);
1180 fetch_switch_config(vconn, &config);
1181 puts(ofputil_frag_handling_to_string(ntohs(config.flags)));
1186 do_set_frags(int argc OVS_UNUSED, char *argv[])
1188 struct ofp_switch_config config;
1189 enum ofp_config_flags mode;
1190 struct vconn *vconn;
1193 if (!ofputil_frag_handling_from_string(argv[2], &mode)) {
1194 ovs_fatal(0, "%s: unknown fragment handling mode", argv[2]);
1197 open_vconn(argv[1], &vconn);
1198 fetch_switch_config(vconn, &config);
1199 flags = htons(mode) | (config.flags & htons(~OFPC_FRAG_MASK));
1200 if (flags != config.flags) {
1201 /* Set the configuration. */
1202 config.flags = flags;
1203 set_switch_config(vconn, &config);
1205 /* Then retrieve the configuration to see if it really took. OpenFlow
1206 * doesn't define error reporting for bad modes, so this is all we can
1208 fetch_switch_config(vconn, &config);
1209 if (flags != config.flags) {
1210 ovs_fatal(0, "%s: setting fragment handling mode failed (this "
1211 "switch probably doesn't support mode \"%s\")",
1212 argv[1], ofputil_frag_handling_to_string(mode));
1219 do_ping(int argc, char *argv[])
1221 size_t max_payload = 65535 - sizeof(struct ofp_header);
1222 unsigned int payload;
1223 struct vconn *vconn;
1226 payload = argc > 2 ? atoi(argv[2]) : 64;
1227 if (payload > max_payload) {
1228 ovs_fatal(0, "payload must be between 0 and %zu bytes", max_payload);
1231 open_vconn(argv[1], &vconn);
1232 for (i = 0; i < 10; i++) {
1233 struct timeval start, end;
1234 struct ofpbuf *request, *reply;
1235 struct ofp_header *rq_hdr, *rpy_hdr;
1237 rq_hdr = make_openflow(sizeof(struct ofp_header) + payload,
1238 OFPT_ECHO_REQUEST, &request);
1239 random_bytes(rq_hdr + 1, payload);
1241 xgettimeofday(&start);
1242 run(vconn_transact(vconn, ofpbuf_clone(request), &reply), "transact");
1243 xgettimeofday(&end);
1245 rpy_hdr = reply->data;
1246 if (reply->size != request->size
1247 || memcmp(rpy_hdr + 1, rq_hdr + 1, payload)
1248 || rpy_hdr->xid != rq_hdr->xid
1249 || rpy_hdr->type != OFPT_ECHO_REPLY) {
1250 printf("Reply does not match request. Request:\n");
1251 ofp_print(stdout, request, request->size, verbosity + 2);
1253 ofp_print(stdout, reply, reply->size, verbosity + 2);
1255 printf("%zu bytes from %s: xid=%08"PRIx32" time=%.1f ms\n",
1256 reply->size - sizeof *rpy_hdr, argv[1], ntohl(rpy_hdr->xid),
1257 (1000*(double)(end.tv_sec - start.tv_sec))
1258 + (.001*(end.tv_usec - start.tv_usec)));
1259 ofpbuf_delete(request);
1260 ofpbuf_delete(reply);
1266 do_benchmark(int argc OVS_UNUSED, char *argv[])
1268 size_t max_payload = 65535 - sizeof(struct ofp_header);
1269 struct timeval start, end;
1270 unsigned int payload_size, message_size;
1271 struct vconn *vconn;
1276 payload_size = atoi(argv[2]);
1277 if (payload_size > max_payload) {
1278 ovs_fatal(0, "payload must be between 0 and %zu bytes", max_payload);
1280 message_size = sizeof(struct ofp_header) + payload_size;
1282 count = atoi(argv[3]);
1284 printf("Sending %d packets * %u bytes (with header) = %u bytes total\n",
1285 count, message_size, count * message_size);
1287 open_vconn(argv[1], &vconn);
1288 xgettimeofday(&start);
1289 for (i = 0; i < count; i++) {
1290 struct ofpbuf *request, *reply;
1291 struct ofp_header *rq_hdr;
1293 rq_hdr = make_openflow(message_size, OFPT_ECHO_REQUEST, &request);
1294 memset(rq_hdr + 1, 0, payload_size);
1295 run(vconn_transact(vconn, request, &reply), "transact");
1296 ofpbuf_delete(reply);
1298 xgettimeofday(&end);
1301 duration = ((1000*(double)(end.tv_sec - start.tv_sec))
1302 + (.001*(end.tv_usec - start.tv_usec)));
1303 printf("Finished in %.1f ms (%.0f packets/s) (%.0f bytes/s)\n",
1304 duration, count / (duration / 1000.0),
1305 count * message_size / (duration / 1000.0));
1309 do_help(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
1314 /* replace-flows and diff-flows commands. */
1316 /* A flow table entry, possibly with two different versions. */
1318 struct cls_rule rule; /* Within a "struct classifier". */
1319 struct fte_version *versions[2];
1322 /* One version of a Flow Table Entry. */
1323 struct fte_version {
1325 uint16_t idle_timeout;
1326 uint16_t hard_timeout;
1328 union ofp_action *actions;
1332 /* Frees 'version' and the data that it owns. */
1334 fte_version_free(struct fte_version *version)
1337 free(version->actions);
1342 /* Returns true if 'a' and 'b' are the same, false if they differ.
1344 * Ignores differences in 'flags' because there's no way to retrieve flags from
1345 * an OpenFlow switch. We have to assume that they are the same. */
1347 fte_version_equals(const struct fte_version *a, const struct fte_version *b)
1349 return (a->cookie == b->cookie
1350 && a->idle_timeout == b->idle_timeout
1351 && a->hard_timeout == b->hard_timeout
1352 && a->n_actions == b->n_actions
1353 && !memcmp(a->actions, b->actions,
1354 a->n_actions * sizeof *a->actions));
1357 /* Prints 'version' on stdout. Expects the caller to have printed the rule
1358 * associated with the version. */
1360 fte_version_print(const struct fte_version *version)
1364 if (version->cookie != htonll(0)) {
1365 printf(" cookie=0x%"PRIx64, ntohll(version->cookie));
1367 if (version->idle_timeout != OFP_FLOW_PERMANENT) {
1368 printf(" idle_timeout=%"PRIu16, version->idle_timeout);
1370 if (version->hard_timeout != OFP_FLOW_PERMANENT) {
1371 printf(" hard_timeout=%"PRIu16, version->hard_timeout);
1375 ofp_print_actions(&s, version->actions, version->n_actions);
1376 printf(" %s\n", ds_cstr(&s));
1381 fte_from_cls_rule(const struct cls_rule *cls_rule)
1383 return cls_rule ? CONTAINER_OF(cls_rule, struct fte, rule) : NULL;
1386 /* Frees 'fte' and its versions. */
1388 fte_free(struct fte *fte)
1391 fte_version_free(fte->versions[0]);
1392 fte_version_free(fte->versions[1]);
1397 /* Frees all of the FTEs within 'cls'. */
1399 fte_free_all(struct classifier *cls)
1401 struct cls_cursor cursor;
1402 struct fte *fte, *next;
1404 cls_cursor_init(&cursor, cls, NULL);
1405 CLS_CURSOR_FOR_EACH_SAFE (fte, next, rule, &cursor) {
1406 classifier_remove(cls, &fte->rule);
1411 /* Searches 'cls' for an FTE matching 'rule', inserting a new one if
1412 * necessary. Sets 'version' as the version of that rule with the given
1413 * 'index', replacing any existing version, if any.
1415 * Takes ownership of 'version'. */
1417 fte_insert(struct classifier *cls, const struct cls_rule *rule,
1418 struct fte_version *version, int index)
1420 struct fte *old, *fte;
1422 fte = xzalloc(sizeof *fte);
1424 fte->versions[index] = version;
1426 old = fte_from_cls_rule(classifier_replace(cls, &fte->rule));
1428 fte_version_free(old->versions[index]);
1429 fte->versions[!index] = old->versions[!index];
1434 /* Reads the flows in 'filename' as flow table entries in 'cls' for the version
1435 * with the specified 'index'. Returns the minimum flow format required to
1436 * represent the flows that were read. */
1437 static enum nx_flow_format
1438 read_flows_from_file(const char *filename, struct classifier *cls, int index)
1440 enum nx_flow_format min_flow_format;
1444 file = !strcmp(filename, "-") ? stdin : fopen(filename, "r");
1446 ovs_fatal(errno, "%s: open", filename);
1450 min_flow_format = NXFF_OPENFLOW10;
1451 while (!ds_get_preprocessed_line(&s, file)) {
1452 struct fte_version *version;
1453 struct ofputil_flow_mod fm;
1454 enum nx_flow_format min_ff;
1456 parse_ofp_str(&fm, OFPFC_ADD, ds_cstr(&s), true);
1458 version = xmalloc(sizeof *version);
1459 version->cookie = fm.cookie;
1460 version->idle_timeout = fm.idle_timeout;
1461 version->hard_timeout = fm.hard_timeout;
1462 version->flags = fm.flags & (OFPFF_SEND_FLOW_REM | OFPFF_EMERG);
1463 version->actions = fm.actions;
1464 version->n_actions = fm.n_actions;
1466 min_ff = ofputil_min_flow_format(&fm.cr);
1467 min_flow_format = MAX(min_flow_format, min_ff);
1468 check_final_format_for_flow_mod(min_flow_format);
1470 fte_insert(cls, &fm.cr, version, index);
1474 if (file != stdin) {
1478 return min_flow_format;
1481 /* Reads the OpenFlow flow table from 'vconn', which has currently active flow
1482 * format 'flow_format', and adds them as flow table entries in 'cls' for the
1483 * version with the specified 'index'. */
1485 read_flows_from_switch(struct vconn *vconn, enum nx_flow_format flow_format,
1486 struct classifier *cls, int index)
1488 struct ofputil_flow_stats_request fsr;
1489 struct ofpbuf *request;
1493 fsr.aggregate = false;
1494 cls_rule_init_catchall(&fsr.match, 0);
1495 fsr.out_port = OFPP_NONE;
1496 fsr.table_id = 0xff;
1497 fsr.cookie = fsr.cookie_mask = htonll(0);
1498 request = ofputil_encode_flow_stats_request(&fsr, flow_format);
1499 send_xid = ((struct ofp_header *) request->data)->xid;
1500 send_openflow_buffer(vconn, request);
1505 struct ofpbuf *reply;
1507 run(vconn_recv_block(vconn, &reply), "OpenFlow packet receive failed");
1508 recv_xid = ((struct ofp_header *) reply->data)->xid;
1509 if (send_xid == recv_xid) {
1510 const struct ofputil_msg_type *type;
1511 const struct ofp_stats_msg *osm;
1512 enum ofputil_msg_code code;
1514 ofputil_decode_msg_type(reply->data, &type);
1515 code = ofputil_msg_type_code(type);
1516 if (code != OFPUTIL_OFPST_FLOW_REPLY &&
1517 code != OFPUTIL_NXST_FLOW_REPLY) {
1518 ovs_fatal(0, "received bad reply: %s",
1519 ofp_to_string(reply->data, reply->size,
1524 if (!(osm->flags & htons(OFPSF_REPLY_MORE))) {
1529 struct fte_version *version;
1530 struct ofputil_flow_stats fs;
1533 retval = ofputil_decode_flow_stats_reply(&fs, reply, false);
1535 if (retval != EOF) {
1536 ovs_fatal(0, "parse error in reply");
1541 version = xmalloc(sizeof *version);
1542 version->cookie = fs.cookie;
1543 version->idle_timeout = fs.idle_timeout;
1544 version->hard_timeout = fs.hard_timeout;
1546 version->n_actions = fs.n_actions;
1547 version->actions = xmemdup(fs.actions,
1548 fs.n_actions * sizeof *fs.actions);
1550 fte_insert(cls, &fs.rule, version, index);
1553 VLOG_DBG("received reply with xid %08"PRIx32" "
1554 "!= expected %08"PRIx32, recv_xid, send_xid);
1556 ofpbuf_delete(reply);
1561 fte_make_flow_mod(const struct fte *fte, int index, uint16_t command,
1562 enum nx_flow_format flow_format, struct list *packets)
1564 const struct fte_version *version = fte->versions[index];
1565 struct ofputil_flow_mod fm;
1569 fm.cookie = version->cookie;
1571 fm.command = command;
1572 fm.idle_timeout = version->idle_timeout;
1573 fm.hard_timeout = version->hard_timeout;
1574 fm.buffer_id = UINT32_MAX;
1575 fm.out_port = OFPP_NONE;
1576 fm.flags = version->flags;
1577 if (command == OFPFC_ADD || command == OFPFC_MODIFY ||
1578 command == OFPFC_MODIFY_STRICT) {
1579 fm.actions = version->actions;
1580 fm.n_actions = version->n_actions;
1586 ofm = ofputil_encode_flow_mod(&fm, flow_format, false);
1587 list_push_back(packets, &ofm->list_node);
1591 do_replace_flows(int argc OVS_UNUSED, char *argv[])
1593 enum { FILE_IDX = 0, SWITCH_IDX = 1 };
1594 enum nx_flow_format min_flow_format, flow_format;
1595 struct cls_cursor cursor;
1596 struct classifier cls;
1597 struct list requests;
1598 struct vconn *vconn;
1601 classifier_init(&cls);
1602 min_flow_format = read_flows_from_file(argv[2], &cls, FILE_IDX);
1604 open_vconn(argv[1], &vconn);
1605 flow_format = negotiate_highest_flow_format(vconn, min_flow_format);
1606 read_flows_from_switch(vconn, flow_format, &cls, SWITCH_IDX);
1608 list_init(&requests);
1610 /* Delete flows that exist on the switch but not in the file. */
1611 cls_cursor_init(&cursor, &cls, NULL);
1612 CLS_CURSOR_FOR_EACH (fte, rule, &cursor) {
1613 struct fte_version *file_ver = fte->versions[FILE_IDX];
1614 struct fte_version *sw_ver = fte->versions[SWITCH_IDX];
1616 if (sw_ver && !file_ver) {
1617 fte_make_flow_mod(fte, SWITCH_IDX, OFPFC_DELETE_STRICT,
1618 flow_format, &requests);
1622 /* Add flows that exist in the file but not on the switch.
1623 * Update flows that exist in both places but differ. */
1624 cls_cursor_init(&cursor, &cls, NULL);
1625 CLS_CURSOR_FOR_EACH (fte, rule, &cursor) {
1626 struct fte_version *file_ver = fte->versions[FILE_IDX];
1627 struct fte_version *sw_ver = fte->versions[SWITCH_IDX];
1630 && (readd || !sw_ver || !fte_version_equals(sw_ver, file_ver))) {
1631 fte_make_flow_mod(fte, FILE_IDX, OFPFC_ADD, flow_format,
1635 transact_multiple_noreply(vconn, &requests);
1642 read_flows_from_source(const char *source, struct classifier *cls, int index)
1646 if (source[0] == '/' || source[0] == '.'
1647 || (!strchr(source, ':') && !stat(source, &s))) {
1648 read_flows_from_file(source, cls, index);
1650 enum nx_flow_format flow_format;
1651 struct vconn *vconn;
1653 open_vconn(source, &vconn);
1654 flow_format = negotiate_highest_flow_format(vconn, NXFF_OPENFLOW10);
1655 read_flows_from_switch(vconn, flow_format, cls, index);
1661 do_diff_flows(int argc OVS_UNUSED, char *argv[])
1663 bool differences = false;
1664 struct cls_cursor cursor;
1665 struct classifier cls;
1668 classifier_init(&cls);
1669 read_flows_from_source(argv[1], &cls, 0);
1670 read_flows_from_source(argv[2], &cls, 1);
1672 cls_cursor_init(&cursor, &cls, NULL);
1673 CLS_CURSOR_FOR_EACH (fte, rule, &cursor) {
1674 struct fte_version *a = fte->versions[0];
1675 struct fte_version *b = fte->versions[1];
1677 if (!a || !b || !fte_version_equals(a, b)) {
1678 char *rule_s = cls_rule_to_string(&fte->rule);
1680 printf("-%s", rule_s);
1681 fte_version_print(a);
1684 printf("+%s", rule_s);
1685 fte_version_print(b);
1700 /* Undocumented commands for unit testing. */
1703 print_packet_list(struct list *packets)
1705 struct ofpbuf *packet, *next;
1707 LIST_FOR_EACH_SAFE (packet, next, list_node, packets) {
1708 ofp_print(stdout, packet->data, packet->size, verbosity);
1709 list_remove(&packet->list_node);
1710 ofpbuf_delete(packet);
1714 /* "parse-flow FLOW": parses the argument as a flow (like add-flow) and prints
1715 * it back to stdout. */
1717 do_parse_flow(int argc OVS_UNUSED, char *argv[])
1719 enum nx_flow_format flow_format;
1720 bool flow_mod_table_id;
1721 struct list packets;
1723 flow_format = NXFF_OPENFLOW10;
1724 if (preferred_flow_format > 0) {
1725 flow_format = preferred_flow_format;
1727 flow_mod_table_id = false;
1729 list_init(&packets);
1730 parse_ofp_flow_mod_str(&packets, &flow_format, &flow_mod_table_id,
1731 argv[1], OFPFC_ADD, false);
1732 print_packet_list(&packets);
1735 /* "parse-flows FILENAME": reads the named file as a sequence of flows (like
1736 * add-flows) and prints each of the flows back to stdout. */
1738 do_parse_flows(int argc OVS_UNUSED, char *argv[])
1740 enum nx_flow_format flow_format;
1741 bool flow_mod_table_id;
1742 struct list packets;
1745 file = fopen(argv[1], "r");
1747 ovs_fatal(errno, "%s: open", argv[1]);
1750 flow_format = NXFF_OPENFLOW10;
1751 if (preferred_flow_format > 0) {
1752 flow_format = preferred_flow_format;
1754 flow_mod_table_id = false;
1756 list_init(&packets);
1757 while (parse_ofp_flow_mod_file(&packets, &flow_format, &flow_mod_table_id,
1759 print_packet_list(&packets);
1764 /* "parse-nx-match": reads a series of nx_match specifications as strings from
1765 * stdin, does some internal fussing with them, and then prints them back as
1766 * strings on stdout. */
1768 do_parse_nx_match(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
1773 while (!ds_get_line(&in, stdin)) {
1774 struct ofpbuf nx_match;
1775 struct cls_rule rule;
1776 ovs_be64 cookie, cookie_mask;
1781 /* Delete comments, skip blank lines. */
1787 if (strchr(s, '#')) {
1788 *strchr(s, '#') = '\0';
1790 if (s[strspn(s, " ")] == '\0') {
1795 /* Convert string to nx_match. */
1796 ofpbuf_init(&nx_match, 0);
1797 match_len = nx_match_from_string(ds_cstr(&in), &nx_match);
1799 /* Convert nx_match to cls_rule. */
1801 error = nx_pull_match(&nx_match, match_len, 0, &rule,
1802 &cookie, &cookie_mask);
1804 error = nx_pull_match_loose(&nx_match, match_len, 0, &rule,
1805 &cookie, &cookie_mask);
1811 /* Convert cls_rule back to nx_match. */
1812 ofpbuf_uninit(&nx_match);
1813 ofpbuf_init(&nx_match, 0);
1814 match_len = nx_put_match(&nx_match, &rule, cookie, cookie_mask);
1816 /* Convert nx_match to string. */
1817 out = nx_match_to_string(nx_match.data, match_len);
1821 printf("nx_pull_match() returned error %s\n",
1822 ofperr_get_name(error));
1825 ofpbuf_uninit(&nx_match);
1830 /* "ofp-print HEXSTRING [VERBOSITY]": Converts the hex digits in HEXSTRING into
1831 * binary data, interpreting them as an OpenFlow message, and prints the
1832 * OpenFlow message on stdout, at VERBOSITY (level 2 by default). */
1834 do_ofp_print(int argc, char *argv[])
1836 struct ofpbuf packet;
1838 ofpbuf_init(&packet, strlen(argv[1]) / 2);
1839 if (ofpbuf_put_hex(&packet, argv[1], NULL)[0] != '\0') {
1840 ovs_fatal(0, "trailing garbage following hex bytes");
1842 ofp_print(stdout, packet.data, packet.size, argc > 2 ? atoi(argv[2]) : 2);
1843 ofpbuf_uninit(&packet);
1846 static const struct command all_commands[] = {
1847 { "show", 1, 1, do_show },
1848 { "monitor", 1, 3, do_monitor },
1849 { "snoop", 1, 1, do_snoop },
1850 { "dump-desc", 1, 1, do_dump_desc },
1851 { "dump-tables", 1, 1, do_dump_tables },
1852 { "dump-flows", 1, 2, do_dump_flows },
1853 { "dump-aggregate", 1, 2, do_dump_aggregate },
1854 { "queue-stats", 1, 3, do_queue_stats },
1855 { "add-flow", 2, 2, do_add_flow },
1856 { "add-flows", 2, 2, do_add_flows },
1857 { "mod-flows", 2, 2, do_mod_flows },
1858 { "del-flows", 1, 2, do_del_flows },
1859 { "replace-flows", 2, 2, do_replace_flows },
1860 { "diff-flows", 2, 2, do_diff_flows },
1861 { "packet-out", 4, INT_MAX, do_packet_out },
1862 { "dump-ports", 1, 2, do_dump_ports },
1863 { "mod-port", 3, 3, do_mod_port },
1864 { "get-frags", 1, 1, do_get_frags },
1865 { "set-frags", 2, 2, do_set_frags },
1866 { "probe", 1, 1, do_probe },
1867 { "ping", 1, 2, do_ping },
1868 { "benchmark", 3, 3, do_benchmark },
1869 { "help", 0, INT_MAX, do_help },
1871 /* Undocumented commands for testing. */
1872 { "parse-flow", 1, 1, do_parse_flow },
1873 { "parse-flows", 1, 1, do_parse_flows },
1874 { "parse-nx-match", 0, 0, do_parse_nx_match },
1875 { "ofp-print", 1, 2, do_ofp_print },
1877 { NULL, 0, 0, NULL },