2 * Copyright (c) 2008, 2009, 2010, 2011 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>
30 #include "byte-order.h"
31 #include "classifier.h"
32 #include "command-line.h"
36 #include "dynamic-string.h"
40 #include "ofp-parse.h"
41 #include "ofp-print.h"
44 #include "ofproto/ofproto.h"
45 #include "openflow/nicira-ext.h"
46 #include "openflow/openflow.h"
47 #include "poll-loop.h"
49 #include "stream-ssl.h"
56 VLOG_DEFINE_THIS_MODULE(ofctl);
58 /* --strict: Use strict matching for flow mod commands? */
61 /* --readd: If ture, on replace-flows, re-add even flows that have not changed
62 * (to reset flow counters). */
65 /* -F, --flow-format: Flow format to use. Either one of NXFF_* to force a
66 * particular flow format or -1 to let ovs-ofctl choose intelligently. */
67 static int preferred_flow_format = -1;
69 /* -m, --more: Additional verbosity for ofp-print functions. */
72 static const struct command all_commands[];
74 static void usage(void) NO_RETURN;
75 static void parse_options(int argc, char *argv[]);
78 main(int argc, char *argv[])
80 set_program_name(argv[0]);
81 parse_options(argc, argv);
82 signal(SIGPIPE, SIG_IGN);
83 run_command(argc - optind, argv + optind, all_commands);
88 parse_options(int argc, char *argv[])
91 OPT_STRICT = UCHAR_MAX + 1,
96 static struct option long_options[] = {
97 {"timeout", required_argument, NULL, 't'},
98 {"strict", no_argument, NULL, OPT_STRICT},
99 {"readd", no_argument, NULL, OPT_READD},
100 {"flow-format", required_argument, NULL, 'F'},
101 {"more", no_argument, NULL, 'm'},
102 {"help", no_argument, NULL, 'h'},
103 {"version", no_argument, NULL, 'V'},
106 STREAM_SSL_LONG_OPTIONS,
109 char *short_options = long_options_to_short_options(long_options);
112 unsigned long int timeout;
115 c = getopt_long(argc, argv, short_options, long_options, NULL);
122 timeout = strtoul(optarg, NULL, 10);
124 ovs_fatal(0, "value %s on -t or --timeout is not at least 1",
132 preferred_flow_format = ofputil_flow_format_from_string(optarg);
133 if (preferred_flow_format < 0) {
134 ovs_fatal(0, "unknown flow format `%s'", optarg);
146 ovs_print_version(OFP_VERSION, OFP_VERSION);
157 DAEMON_OPTION_HANDLERS
159 STREAM_SSL_OPTION_HANDLERS
174 printf("%s: OpenFlow switch management utility\n"
175 "usage: %s [OPTIONS] COMMAND [ARG...]\n"
176 "\nFor OpenFlow switches:\n"
177 " show SWITCH show OpenFlow information\n"
178 " dump-desc SWITCH print switch description\n"
179 " dump-tables SWITCH print table stats\n"
180 " mod-port SWITCH IFACE ACT modify port behavior\n"
181 " get-frags SWITCH print fragment handling behavior\n"
182 " set-frags SWITCH FRAG_MODE set fragment handling behavior\n"
183 " dump-ports SWITCH [PORT] print port statistics\n"
184 " dump-flows SWITCH print all flow entries\n"
185 " dump-flows SWITCH FLOW print matching FLOWs\n"
186 " dump-aggregate SWITCH print aggregate flow statistics\n"
187 " dump-aggregate SWITCH FLOW print aggregate stats for FLOWs\n"
188 " queue-stats SWITCH [PORT [QUEUE]] dump queue stats\n"
189 " add-flow SWITCH FLOW add flow described by FLOW\n"
190 " add-flows SWITCH FILE add flows from FILE\n"
191 " mod-flows SWITCH FLOW modify actions of matching FLOWs\n"
192 " del-flows SWITCH [FLOW] delete matching FLOWs\n"
193 " replace-flows SWITCH FILE replace flows with those in FILE\n"
194 " monitor SWITCH [MISSLEN] print packets received from SWITCH\n"
195 "\nFor OpenFlow switches and controllers:\n"
196 " probe TARGET probe whether TARGET is up\n"
197 " ping TARGET [N] latency of N-byte echos\n"
198 " benchmark TARGET N COUNT bandwidth of COUNT N-byte echos\n"
199 "where SWITCH or TARGET is an active OpenFlow connection method.\n",
200 program_name, program_name);
201 vconn_usage(true, false, false);
204 printf("\nOther options:\n"
205 " --strict use strict match for flow commands\n"
206 " --readd replace flows that haven't changed\n"
207 " -F, --flow-format=FORMAT force particular flow format\n"
208 " -m, --more be more verbose printing OpenFlow\n"
209 " -t, --timeout=SECS give up after SECS seconds\n"
210 " -h, --help display this help message\n"
211 " -V, --version display version information\n");
216 ofctl_exit(struct unixctl_conn *conn, int argc OVS_UNUSED,
217 const char *argv[] OVS_UNUSED, void *exiting_)
219 bool *exiting = exiting_;
221 unixctl_command_reply(conn, 200, "");
224 static void run(int retval, const char *message, ...)
227 static void run(int retval, const char *message, ...)
232 va_start(args, message);
233 ovs_fatal_valist(retval, message, args);
237 /* Generic commands. */
240 open_vconn_socket(const char *name, struct vconn **vconnp)
242 char *vconn_name = xasprintf("unix:%s", name);
243 VLOG_DBG("connecting to %s", vconn_name);
244 run(vconn_open_block(vconn_name, OFP_VERSION, vconnp),
245 "connecting to %s", vconn_name);
250 open_vconn__(const char *name, const char *default_suffix,
251 struct vconn **vconnp)
253 char *datapath_name, *datapath_type, *socket_name;
257 bridge_path = xasprintf("%s/%s.%s", ovs_rundir(), name, default_suffix);
259 ofproto_parse_name(name, &datapath_name, &datapath_type);
260 socket_name = xasprintf("%s/%s.%s",
261 ovs_rundir(), datapath_name, default_suffix);
265 if (strchr(name, ':')) {
266 run(vconn_open_block(name, OFP_VERSION, vconnp),
267 "connecting to %s", name);
268 } else if (!stat(name, &s) && S_ISSOCK(s.st_mode)) {
269 open_vconn_socket(name, vconnp);
270 } else if (!stat(bridge_path, &s) && S_ISSOCK(s.st_mode)) {
271 open_vconn_socket(bridge_path, vconnp);
272 } else if (!stat(socket_name, &s)) {
273 if (!S_ISSOCK(s.st_mode)) {
274 ovs_fatal(0, "cannot connect to %s: %s is not a socket",
277 open_vconn_socket(socket_name, vconnp);
279 ovs_fatal(0, "%s is not a bridge or a socket", name);
287 open_vconn(const char *name, struct vconn **vconnp)
289 return open_vconn__(name, "mgmt", vconnp);
293 alloc_stats_request(size_t rq_len, uint16_t type, struct ofpbuf **bufferp)
295 struct ofp_stats_msg *rq;
297 rq = make_openflow(rq_len, OFPT_STATS_REQUEST, bufferp);
298 rq->type = htons(type);
299 rq->flags = htons(0);
304 send_openflow_buffer(struct vconn *vconn, struct ofpbuf *buffer)
306 update_openflow_length(buffer);
307 run(vconn_send_block(vconn, buffer), "failed to send packet to switch");
311 dump_transaction(const char *vconn_name, struct ofpbuf *request)
314 struct ofpbuf *reply;
316 update_openflow_length(request);
317 open_vconn(vconn_name, &vconn);
318 run(vconn_transact(vconn, request, &reply), "talking to %s", vconn_name);
319 ofp_print(stdout, reply->data, reply->size, verbosity + 1);
324 dump_trivial_transaction(const char *vconn_name, uint8_t request_type)
326 struct ofpbuf *request;
327 make_openflow(sizeof(struct ofp_header), request_type, &request);
328 dump_transaction(vconn_name, request);
332 dump_stats_transaction(const char *vconn_name, struct ofpbuf *request)
334 ovs_be32 send_xid = ((struct ofp_header *) request->data)->xid;
338 open_vconn(vconn_name, &vconn);
339 send_openflow_buffer(vconn, request);
342 struct ofpbuf *reply;
344 run(vconn_recv_block(vconn, &reply), "OpenFlow packet receive failed");
345 recv_xid = ((struct ofp_header *) reply->data)->xid;
346 if (send_xid == recv_xid) {
347 struct ofp_stats_msg *osm;
349 ofp_print(stdout, reply->data, reply->size, verbosity + 1);
351 osm = ofpbuf_at(reply, 0, sizeof *osm);
352 done = !osm || !(ntohs(osm->flags) & OFPSF_REPLY_MORE);
354 VLOG_DBG("received reply with xid %08"PRIx32" "
355 "!= expected %08"PRIx32, recv_xid, send_xid);
357 ofpbuf_delete(reply);
363 dump_trivial_stats_transaction(const char *vconn_name, uint8_t stats_type)
365 struct ofpbuf *request;
366 alloc_stats_request(sizeof(struct ofp_stats_msg), stats_type, &request);
367 dump_stats_transaction(vconn_name, request);
370 /* Sends 'request', which should be a request that only has a reply if an error
371 * occurs, and waits for it to succeed or fail. If an error does occur, prints
372 * it and exits with an error.
374 * Destroys all of the 'requests'. */
376 transact_multiple_noreply(struct vconn *vconn, struct list *requests)
378 struct ofpbuf *request, *reply;
380 LIST_FOR_EACH (request, list_node, requests) {
381 update_openflow_length(request);
384 run(vconn_transact_multiple_noreply(vconn, requests, &reply),
385 "talking to %s", vconn_get_name(vconn));
387 ofp_print(stderr, reply->data, reply->size, verbosity + 2);
390 ofpbuf_delete(reply);
393 /* Sends 'request', which should be a request that only has a reply if an error
394 * occurs, and waits for it to succeed or fail. If an error does occur, prints
395 * it and exits with an error.
397 * Destroys 'request'. */
399 transact_noreply(struct vconn *vconn, struct ofpbuf *request)
401 struct list requests;
403 list_init(&requests);
404 list_push_back(&requests, &request->list_node);
405 transact_multiple_noreply(vconn, &requests);
409 fetch_switch_config(struct vconn *vconn, struct ofp_switch_config *config_)
411 struct ofp_switch_config *config;
412 struct ofp_header *header;
413 struct ofpbuf *request;
414 struct ofpbuf *reply;
416 make_openflow(sizeof(struct ofp_header), OFPT_GET_CONFIG_REQUEST,
418 run(vconn_transact(vconn, request, &reply),
419 "talking to %s", vconn_get_name(vconn));
421 header = reply->data;
422 if (header->type != OFPT_GET_CONFIG_REPLY ||
423 header->length != htons(sizeof *config)) {
424 ovs_fatal(0, "%s: bad reply to config request", vconn_get_name(vconn));
427 config = reply->data;
432 set_switch_config(struct vconn *vconn, struct ofp_switch_config *config_)
434 struct ofp_switch_config *config;
435 struct ofp_header save_header;
436 struct ofpbuf *request;
438 config = make_openflow(sizeof *config, OFPT_SET_CONFIG, &request);
439 save_header = config->header;
441 config->header = save_header;
443 transact_noreply(vconn, request);
447 do_show(int argc OVS_UNUSED, char *argv[])
449 dump_trivial_transaction(argv[1], OFPT_FEATURES_REQUEST);
450 dump_trivial_transaction(argv[1], OFPT_GET_CONFIG_REQUEST);
454 do_dump_desc(int argc OVS_UNUSED, char *argv[])
456 dump_trivial_stats_transaction(argv[1], OFPST_DESC);
460 do_dump_tables(int argc OVS_UNUSED, char *argv[])
462 dump_trivial_stats_transaction(argv[1], OFPST_TABLE);
465 /* Opens a connection to 'vconn_name', fetches the ofp_phy_port structure for
466 * 'port_name' (which may be a port name or number), and copies it into
469 fetch_ofp_phy_port(const char *vconn_name, const char *port_name,
470 struct ofp_phy_port *oppp)
472 struct ofpbuf *request, *reply;
473 struct ofp_switch_features *osf;
474 unsigned int port_no;
479 /* Try to interpret the argument as a port number. */
480 if (!str_to_uint(port_name, 10, &port_no)) {
484 /* Fetch the switch's ofp_switch_features. */
485 make_openflow(sizeof(struct ofp_header), OFPT_FEATURES_REQUEST, &request);
486 open_vconn(vconn_name, &vconn);
487 run(vconn_transact(vconn, request, &reply), "talking to %s", vconn_name);
490 if (reply->size < sizeof *osf) {
491 ovs_fatal(0, "%s: received too-short features reply (only %zu bytes)",
492 vconn_name, reply->size);
494 n_ports = (reply->size - sizeof *osf) / sizeof *osf->ports;
496 for (port_idx = 0; port_idx < n_ports; port_idx++) {
497 const struct ofp_phy_port *opp = &osf->ports[port_idx];
499 if (port_no != UINT_MAX
500 ? htons(port_no) == opp->port_no
501 : !strncmp(opp->name, port_name, sizeof opp->name)) {
503 ofpbuf_delete(reply);
508 ovs_fatal(0, "%s: couldn't find port `%s'", vconn_name, port_name);
511 /* Returns the port number corresponding to 'port_name' (which may be a port
512 * name or number) within the switch 'vconn_name'. */
514 str_to_port_no(const char *vconn_name, const char *port_name)
516 unsigned int port_no;
518 if (str_to_uint(port_name, 10, &port_no)) {
521 struct ofp_phy_port opp;
523 fetch_ofp_phy_port(vconn_name, port_name, &opp);
524 return ntohs(opp.port_no);
529 try_set_flow_format(struct vconn *vconn, enum nx_flow_format flow_format)
531 struct ofpbuf *sff, *reply;
533 sff = ofputil_make_set_flow_format(flow_format);
534 run(vconn_transact_noreply(vconn, sff, &reply),
535 "talking to %s", vconn_get_name(vconn));
537 char *s = ofp_to_string(reply->data, reply->size, 2);
538 VLOG_DBG("%s: failed to set flow format %s, controller replied: %s",
539 vconn_get_name(vconn),
540 ofputil_flow_format_to_string(flow_format),
543 ofpbuf_delete(reply);
550 set_flow_format(struct vconn *vconn, enum nx_flow_format flow_format)
552 struct ofpbuf *sff = ofputil_make_set_flow_format(flow_format);
553 transact_noreply(vconn, sff);
554 VLOG_DBG("%s: using user-specified flow format %s",
555 vconn_get_name(vconn),
556 ofputil_flow_format_to_string(flow_format));
559 static enum nx_flow_format
560 negotiate_highest_flow_format(struct vconn *vconn,
561 enum nx_flow_format min_format)
563 if (preferred_flow_format != -1) {
564 if (preferred_flow_format < min_format) {
565 ovs_fatal(0, "%s: cannot use requested flow format %s for "
566 "specified flow", vconn_get_name(vconn),
567 ofputil_flow_format_to_string(min_format));
570 set_flow_format(vconn, preferred_flow_format);
571 return preferred_flow_format;
573 enum nx_flow_format flow_format;
575 if (try_set_flow_format(vconn, NXFF_NXM)) {
576 flow_format = NXFF_NXM;
578 flow_format = NXFF_OPENFLOW10;
581 if (flow_format < min_format) {
582 ovs_fatal(0, "%s: cannot use switch's most advanced flow format "
583 "%s for specified flow", vconn_get_name(vconn),
584 ofputil_flow_format_to_string(min_format));
587 VLOG_DBG("%s: negotiated flow format %s", vconn_get_name(vconn),
588 ofputil_flow_format_to_string(flow_format));
594 do_dump_flows__(int argc, char *argv[], bool aggregate)
596 enum nx_flow_format min_flow_format, flow_format;
597 struct ofputil_flow_stats_request fsr;
598 struct ofpbuf *request;
601 parse_ofp_flow_stats_request_str(&fsr, aggregate, argc > 2 ? argv[2] : "");
603 open_vconn(argv[1], &vconn);
604 min_flow_format = ofputil_min_flow_format(&fsr.match);
605 if (fsr.cookie_mask != htonll(0)) {
606 min_flow_format = NXFF_NXM;
608 flow_format = negotiate_highest_flow_format(vconn, min_flow_format);
609 request = ofputil_encode_flow_stats_request(&fsr, flow_format);
610 dump_stats_transaction(argv[1], request);
615 do_dump_flows(int argc, char *argv[])
617 return do_dump_flows__(argc, argv, false);
621 do_dump_aggregate(int argc, char *argv[])
623 return do_dump_flows__(argc, argv, true);
627 do_queue_stats(int argc, char *argv[])
629 struct ofp_queue_stats_request *req;
630 struct ofpbuf *request;
632 req = alloc_stats_request(sizeof *req, OFPST_QUEUE, &request);
634 if (argc > 2 && argv[2][0] && strcasecmp(argv[2], "all")) {
635 req->port_no = htons(str_to_port_no(argv[1], argv[2]));
637 req->port_no = htons(OFPP_ALL);
639 if (argc > 3 && argv[3][0] && strcasecmp(argv[3], "all")) {
640 req->queue_id = htonl(atoi(argv[3]));
642 req->queue_id = htonl(OFPQ_ALL);
645 memset(req->pad, 0, sizeof req->pad);
647 dump_stats_transaction(argv[1], request);
650 /* Sets up the flow format for a vconn that will be used to modify the flow
651 * table. Returns the flow format used, after possibly adding an OpenFlow
652 * request to 'requests'.
654 * If 'preferred_flow_format' is -1, returns NXFF_OPENFLOW10 without modifying
655 * 'requests', since NXFF_OPENFLOW10 is the default flow format for any
656 * OpenFlow connection.
658 * If 'preferred_flow_format' is a specific format, adds a request to set that
659 * format to 'requests' and returns the format. */
660 static enum nx_flow_format
661 set_initial_format_for_flow_mod(struct list *requests)
663 if (preferred_flow_format < 0) {
664 return NXFF_OPENFLOW10;
668 sff = ofputil_make_set_flow_format(preferred_flow_format);
669 list_push_back(requests, &sff->list_node);
670 return preferred_flow_format;
674 /* Checks that 'flow_format' is acceptable as a flow format after a flow_mod
675 * operation, given the global 'preferred_flow_format'. */
677 check_final_format_for_flow_mod(enum nx_flow_format flow_format)
679 if (preferred_flow_format >= 0 && flow_format > preferred_flow_format) {
680 ovs_fatal(0, "flow cannot be expressed in flow format %s "
681 "(flow format %s or better is required)",
682 ofputil_flow_format_to_string(preferred_flow_format),
683 ofputil_flow_format_to_string(flow_format));
688 do_flow_mod_file__(int argc OVS_UNUSED, char *argv[], uint16_t command)
690 enum nx_flow_format flow_format;
691 bool flow_mod_table_id;
692 struct list requests;
696 file = !strcmp(argv[2], "-") ? stdin : fopen(argv[2], "r");
698 ovs_fatal(errno, "%s: open", argv[2]);
701 list_init(&requests);
702 flow_format = set_initial_format_for_flow_mod(&requests);
703 flow_mod_table_id = false;
705 open_vconn(argv[1], &vconn);
706 while (parse_ofp_flow_mod_file(&requests, &flow_format, &flow_mod_table_id,
708 check_final_format_for_flow_mod(flow_format);
709 transact_multiple_noreply(vconn, &requests);
719 do_flow_mod__(int argc, char *argv[], uint16_t command)
721 enum nx_flow_format flow_format;
722 bool flow_mod_table_id;
723 struct list requests;
726 if (argc > 2 && !strcmp(argv[2], "-")) {
727 do_flow_mod_file__(argc, argv, command);
731 list_init(&requests);
732 flow_format = set_initial_format_for_flow_mod(&requests);
733 flow_mod_table_id = false;
735 parse_ofp_flow_mod_str(&requests, &flow_format, &flow_mod_table_id,
736 argc > 2 ? argv[2] : "", command, false);
737 check_final_format_for_flow_mod(flow_format);
739 open_vconn(argv[1], &vconn);
740 transact_multiple_noreply(vconn, &requests);
745 do_add_flow(int argc, char *argv[])
747 do_flow_mod__(argc, argv, OFPFC_ADD);
751 do_add_flows(int argc, char *argv[])
753 do_flow_mod_file__(argc, argv, OFPFC_ADD);
757 do_mod_flows(int argc, char *argv[])
759 do_flow_mod__(argc, argv, strict ? OFPFC_MODIFY_STRICT : OFPFC_MODIFY);
763 do_del_flows(int argc, char *argv[])
765 do_flow_mod__(argc, argv, strict ? OFPFC_DELETE_STRICT : OFPFC_DELETE);
769 monitor_vconn(struct vconn *vconn)
771 struct unixctl_server *server;
772 bool exiting = false;
775 /* Daemonization will close stderr but we really want to keep it, so make a
777 fd = dup(STDERR_FILENO);
780 error = unixctl_server_create(NULL, &server);
782 ovs_fatal(error, "failed to create unixctl server");
784 unixctl_command_register("exit", "", 0, 0, ofctl_exit, &exiting);
785 daemonize_complete();
787 /* Now get stderr back. */
788 dup2(fd, STDERR_FILENO);
794 unixctl_server_run(server);
797 retval = vconn_recv(vconn, &b);
798 if (retval == EAGAIN) {
802 run(retval, "vconn_recv");
803 ofp_print(stderr, b->data, b->size, verbosity + 2);
812 vconn_run_wait(vconn);
813 vconn_recv_wait(vconn);
814 unixctl_server_wait(server);
820 do_monitor(int argc, char *argv[])
824 open_vconn(argv[1], &vconn);
826 struct ofp_switch_config config;
828 fetch_switch_config(vconn, &config);
829 config.miss_send_len = htons(atoi(argv[2]));
830 set_switch_config(vconn, &config);
832 monitor_vconn(vconn);
836 do_snoop(int argc OVS_UNUSED, char *argv[])
840 open_vconn__(argv[1], "snoop", &vconn);
841 monitor_vconn(vconn);
845 do_dump_ports(int argc, char *argv[])
847 struct ofp_port_stats_request *req;
848 struct ofpbuf *request;
851 req = alloc_stats_request(sizeof *req, OFPST_PORT, &request);
852 port = argc > 2 ? str_to_port_no(argv[1], argv[2]) : OFPP_NONE;
853 req->port_no = htons(port);
854 dump_stats_transaction(argv[1], request);
858 do_probe(int argc OVS_UNUSED, char *argv[])
860 struct ofpbuf *request;
862 struct ofpbuf *reply;
864 make_openflow(sizeof(struct ofp_header), OFPT_ECHO_REQUEST, &request);
865 open_vconn(argv[1], &vconn);
866 run(vconn_transact(vconn, request, &reply), "talking to %s", argv[1]);
867 if (reply->size != sizeof(struct ofp_header)) {
868 ovs_fatal(0, "reply does not match request");
870 ofpbuf_delete(reply);
875 do_mod_port(int argc OVS_UNUSED, char *argv[])
877 struct ofp_port_mod *opm;
878 struct ofp_phy_port opp;
879 struct ofpbuf *request;
882 fetch_ofp_phy_port(argv[1], argv[2], &opp);
884 opm = make_openflow(sizeof(struct ofp_port_mod), OFPT_PORT_MOD, &request);
885 opm->port_no = opp.port_no;
886 memcpy(opm->hw_addr, opp.hw_addr, sizeof opm->hw_addr);
887 opm->config = htonl(0);
888 opm->mask = htonl(0);
889 opm->advertise = htonl(0);
891 if (!strcasecmp(argv[3], "up")) {
892 opm->mask |= htonl(OFPPC_PORT_DOWN);
893 } else if (!strcasecmp(argv[3], "down")) {
894 opm->mask |= htonl(OFPPC_PORT_DOWN);
895 opm->config |= htonl(OFPPC_PORT_DOWN);
896 } else if (!strcasecmp(argv[3], "flood")) {
897 opm->mask |= htonl(OFPPC_NO_FLOOD);
898 } else if (!strcasecmp(argv[3], "noflood")) {
899 opm->mask |= htonl(OFPPC_NO_FLOOD);
900 opm->config |= htonl(OFPPC_NO_FLOOD);
901 } else if (!strcasecmp(argv[3], "forward")) {
902 opm->mask |= htonl(OFPPC_NO_FWD);
903 } else if (!strcasecmp(argv[3], "noforward")) {
904 opm->mask |= htonl(OFPPC_NO_FWD);
905 opm->config |= htonl(OFPPC_NO_FWD);
907 ovs_fatal(0, "unknown mod-port command '%s'", argv[3]);
910 open_vconn(argv[1], &vconn);
911 transact_noreply(vconn, request);
916 do_get_frags(int argc OVS_UNUSED, char *argv[])
918 struct ofp_switch_config config;
921 open_vconn(argv[1], &vconn);
922 fetch_switch_config(vconn, &config);
923 puts(ofputil_frag_handling_to_string(ntohs(config.flags)));
928 do_set_frags(int argc OVS_UNUSED, char *argv[])
930 struct ofp_switch_config config;
931 enum ofp_config_flags mode;
935 if (!ofputil_frag_handling_from_string(argv[2], &mode)) {
936 ovs_fatal(0, "%s: unknown fragment handling mode", argv[2]);
939 open_vconn(argv[1], &vconn);
940 fetch_switch_config(vconn, &config);
941 flags = htons(mode) | (config.flags & htons(~OFPC_FRAG_MASK));
942 if (flags != config.flags) {
943 /* Set the configuration. */
944 config.flags = flags;
945 set_switch_config(vconn, &config);
947 /* Then retrieve the configuration to see if it really took. OpenFlow
948 * doesn't define error reporting for bad modes, so this is all we can
950 fetch_switch_config(vconn, &config);
951 if (flags != config.flags) {
952 ovs_fatal(0, "%s: setting fragment handling mode failed (this "
953 "switch probably doesn't support mode \"%s\")",
954 argv[1], ofputil_frag_handling_to_string(mode));
961 do_ping(int argc, char *argv[])
963 size_t max_payload = 65535 - sizeof(struct ofp_header);
964 unsigned int payload;
968 payload = argc > 2 ? atoi(argv[2]) : 64;
969 if (payload > max_payload) {
970 ovs_fatal(0, "payload must be between 0 and %zu bytes", max_payload);
973 open_vconn(argv[1], &vconn);
974 for (i = 0; i < 10; i++) {
975 struct timeval start, end;
976 struct ofpbuf *request, *reply;
977 struct ofp_header *rq_hdr, *rpy_hdr;
979 rq_hdr = make_openflow(sizeof(struct ofp_header) + payload,
980 OFPT_ECHO_REQUEST, &request);
981 random_bytes(rq_hdr + 1, payload);
983 xgettimeofday(&start);
984 run(vconn_transact(vconn, ofpbuf_clone(request), &reply), "transact");
987 rpy_hdr = reply->data;
988 if (reply->size != request->size
989 || memcmp(rpy_hdr + 1, rq_hdr + 1, payload)
990 || rpy_hdr->xid != rq_hdr->xid
991 || rpy_hdr->type != OFPT_ECHO_REPLY) {
992 printf("Reply does not match request. Request:\n");
993 ofp_print(stdout, request, request->size, verbosity + 2);
995 ofp_print(stdout, reply, reply->size, verbosity + 2);
997 printf("%zu bytes from %s: xid=%08"PRIx32" time=%.1f ms\n",
998 reply->size - sizeof *rpy_hdr, argv[1], ntohl(rpy_hdr->xid),
999 (1000*(double)(end.tv_sec - start.tv_sec))
1000 + (.001*(end.tv_usec - start.tv_usec)));
1001 ofpbuf_delete(request);
1002 ofpbuf_delete(reply);
1008 do_benchmark(int argc OVS_UNUSED, char *argv[])
1010 size_t max_payload = 65535 - sizeof(struct ofp_header);
1011 struct timeval start, end;
1012 unsigned int payload_size, message_size;
1013 struct vconn *vconn;
1018 payload_size = atoi(argv[2]);
1019 if (payload_size > max_payload) {
1020 ovs_fatal(0, "payload must be between 0 and %zu bytes", max_payload);
1022 message_size = sizeof(struct ofp_header) + payload_size;
1024 count = atoi(argv[3]);
1026 printf("Sending %d packets * %u bytes (with header) = %u bytes total\n",
1027 count, message_size, count * message_size);
1029 open_vconn(argv[1], &vconn);
1030 xgettimeofday(&start);
1031 for (i = 0; i < count; i++) {
1032 struct ofpbuf *request, *reply;
1033 struct ofp_header *rq_hdr;
1035 rq_hdr = make_openflow(message_size, OFPT_ECHO_REQUEST, &request);
1036 memset(rq_hdr + 1, 0, payload_size);
1037 run(vconn_transact(vconn, request, &reply), "transact");
1038 ofpbuf_delete(reply);
1040 xgettimeofday(&end);
1043 duration = ((1000*(double)(end.tv_sec - start.tv_sec))
1044 + (.001*(end.tv_usec - start.tv_usec)));
1045 printf("Finished in %.1f ms (%.0f packets/s) (%.0f bytes/s)\n",
1046 duration, count / (duration / 1000.0),
1047 count * message_size / (duration / 1000.0));
1051 do_help(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
1056 /* replace-flows and diff-flows commands. */
1058 /* A flow table entry, possibly with two different versions. */
1060 struct cls_rule rule; /* Within a "struct classifier". */
1061 struct fte_version *versions[2];
1064 /* One version of a Flow Table Entry. */
1065 struct fte_version {
1067 uint16_t idle_timeout;
1068 uint16_t hard_timeout;
1070 union ofp_action *actions;
1074 /* Frees 'version' and the data that it owns. */
1076 fte_version_free(struct fte_version *version)
1079 free(version->actions);
1084 /* Returns true if 'a' and 'b' are the same, false if they differ.
1086 * Ignores differences in 'flags' because there's no way to retrieve flags from
1087 * an OpenFlow switch. We have to assume that they are the same. */
1089 fte_version_equals(const struct fte_version *a, const struct fte_version *b)
1091 return (a->cookie == b->cookie
1092 && a->idle_timeout == b->idle_timeout
1093 && a->hard_timeout == b->hard_timeout
1094 && a->n_actions == b->n_actions
1095 && !memcmp(a->actions, b->actions,
1096 a->n_actions * sizeof *a->actions));
1099 /* Prints 'version' on stdout. Expects the caller to have printed the rule
1100 * associated with the version. */
1102 fte_version_print(const struct fte_version *version)
1106 if (version->cookie != htonll(0)) {
1107 printf(" cookie=0x%"PRIx64, ntohll(version->cookie));
1109 if (version->idle_timeout != OFP_FLOW_PERMANENT) {
1110 printf(" idle_timeout=%"PRIu16, version->idle_timeout);
1112 if (version->hard_timeout != OFP_FLOW_PERMANENT) {
1113 printf(" hard_timeout=%"PRIu16, version->hard_timeout);
1117 ofp_print_actions(&s, version->actions, version->n_actions);
1118 printf(" %s\n", ds_cstr(&s));
1123 fte_from_cls_rule(const struct cls_rule *cls_rule)
1125 return cls_rule ? CONTAINER_OF(cls_rule, struct fte, rule) : NULL;
1128 /* Frees 'fte' and its versions. */
1130 fte_free(struct fte *fte)
1133 fte_version_free(fte->versions[0]);
1134 fte_version_free(fte->versions[1]);
1139 /* Frees all of the FTEs within 'cls'. */
1141 fte_free_all(struct classifier *cls)
1143 struct cls_cursor cursor;
1144 struct fte *fte, *next;
1146 cls_cursor_init(&cursor, cls, NULL);
1147 CLS_CURSOR_FOR_EACH_SAFE (fte, next, rule, &cursor) {
1148 classifier_remove(cls, &fte->rule);
1153 /* Searches 'cls' for an FTE matching 'rule', inserting a new one if
1154 * necessary. Sets 'version' as the version of that rule with the given
1155 * 'index', replacing any existing version, if any.
1157 * Takes ownership of 'version'. */
1159 fte_insert(struct classifier *cls, const struct cls_rule *rule,
1160 struct fte_version *version, int index)
1162 struct fte *old, *fte;
1164 fte = xzalloc(sizeof *fte);
1166 fte->versions[index] = version;
1168 old = fte_from_cls_rule(classifier_replace(cls, &fte->rule));
1170 fte_version_free(old->versions[index]);
1171 fte->versions[!index] = old->versions[!index];
1176 /* Reads the flows in 'filename' as flow table entries in 'cls' for the version
1177 * with the specified 'index'. Returns the minimum flow format required to
1178 * represent the flows that were read. */
1179 static enum nx_flow_format
1180 read_flows_from_file(const char *filename, struct classifier *cls, int index)
1182 enum nx_flow_format min_flow_format;
1186 file = !strcmp(filename, "-") ? stdin : fopen(filename, "r");
1188 ovs_fatal(errno, "%s: open", filename);
1192 min_flow_format = NXFF_OPENFLOW10;
1193 while (!ds_get_preprocessed_line(&s, file)) {
1194 struct fte_version *version;
1195 struct ofputil_flow_mod fm;
1196 enum nx_flow_format min_ff;
1198 parse_ofp_str(&fm, OFPFC_ADD, ds_cstr(&s), true);
1200 version = xmalloc(sizeof *version);
1201 version->cookie = fm.cookie;
1202 version->idle_timeout = fm.idle_timeout;
1203 version->hard_timeout = fm.hard_timeout;
1204 version->flags = fm.flags & (OFPFF_SEND_FLOW_REM | OFPFF_EMERG);
1205 version->actions = fm.actions;
1206 version->n_actions = fm.n_actions;
1208 min_ff = ofputil_min_flow_format(&fm.cr);
1209 min_flow_format = MAX(min_flow_format, min_ff);
1210 check_final_format_for_flow_mod(min_flow_format);
1212 fte_insert(cls, &fm.cr, version, index);
1216 if (file != stdin) {
1220 return min_flow_format;
1223 /* Reads the OpenFlow flow table from 'vconn', which has currently active flow
1224 * format 'flow_format', and adds them as flow table entries in 'cls' for the
1225 * version with the specified 'index'. */
1227 read_flows_from_switch(struct vconn *vconn, enum nx_flow_format flow_format,
1228 struct classifier *cls, int index)
1230 struct ofputil_flow_stats_request fsr;
1231 struct ofpbuf *request;
1235 fsr.aggregate = false;
1236 cls_rule_init_catchall(&fsr.match, 0);
1237 fsr.out_port = OFPP_NONE;
1238 fsr.table_id = 0xff;
1239 fsr.cookie = fsr.cookie_mask = htonll(0);
1240 request = ofputil_encode_flow_stats_request(&fsr, flow_format);
1241 send_xid = ((struct ofp_header *) request->data)->xid;
1242 send_openflow_buffer(vconn, request);
1247 struct ofpbuf *reply;
1249 run(vconn_recv_block(vconn, &reply), "OpenFlow packet receive failed");
1250 recv_xid = ((struct ofp_header *) reply->data)->xid;
1251 if (send_xid == recv_xid) {
1252 const struct ofputil_msg_type *type;
1253 const struct ofp_stats_msg *osm;
1254 enum ofputil_msg_code code;
1256 ofputil_decode_msg_type(reply->data, &type);
1257 code = ofputil_msg_type_code(type);
1258 if (code != OFPUTIL_OFPST_FLOW_REPLY &&
1259 code != OFPUTIL_NXST_FLOW_REPLY) {
1260 ovs_fatal(0, "received bad reply: %s",
1261 ofp_to_string(reply->data, reply->size,
1266 if (!(osm->flags & htons(OFPSF_REPLY_MORE))) {
1271 struct fte_version *version;
1272 struct ofputil_flow_stats fs;
1275 retval = ofputil_decode_flow_stats_reply(&fs, reply);
1277 if (retval != EOF) {
1278 ovs_fatal(0, "parse error in reply");
1283 version = xmalloc(sizeof *version);
1284 version->cookie = fs.cookie;
1285 version->idle_timeout = fs.idle_timeout;
1286 version->hard_timeout = fs.hard_timeout;
1288 version->n_actions = fs.n_actions;
1289 version->actions = xmemdup(fs.actions,
1290 fs.n_actions * sizeof *fs.actions);
1292 fte_insert(cls, &fs.rule, version, index);
1295 VLOG_DBG("received reply with xid %08"PRIx32" "
1296 "!= expected %08"PRIx32, recv_xid, send_xid);
1298 ofpbuf_delete(reply);
1303 fte_make_flow_mod(const struct fte *fte, int index, uint16_t command,
1304 enum nx_flow_format flow_format, struct list *packets)
1306 const struct fte_version *version = fte->versions[index];
1307 struct ofputil_flow_mod fm;
1311 fm.cookie = version->cookie;
1313 fm.command = command;
1314 fm.idle_timeout = version->idle_timeout;
1315 fm.hard_timeout = version->hard_timeout;
1316 fm.buffer_id = UINT32_MAX;
1317 fm.out_port = OFPP_NONE;
1318 fm.flags = version->flags;
1319 if (command == OFPFC_ADD || command == OFPFC_MODIFY ||
1320 command == OFPFC_MODIFY_STRICT) {
1321 fm.actions = version->actions;
1322 fm.n_actions = version->n_actions;
1328 ofm = ofputil_encode_flow_mod(&fm, flow_format, false);
1329 list_push_back(packets, &ofm->list_node);
1333 do_replace_flows(int argc OVS_UNUSED, char *argv[])
1335 enum { FILE_IDX = 0, SWITCH_IDX = 1 };
1336 enum nx_flow_format min_flow_format, flow_format;
1337 struct cls_cursor cursor;
1338 struct classifier cls;
1339 struct list requests;
1340 struct vconn *vconn;
1343 classifier_init(&cls);
1344 min_flow_format = read_flows_from_file(argv[2], &cls, FILE_IDX);
1346 open_vconn(argv[1], &vconn);
1347 flow_format = negotiate_highest_flow_format(vconn, min_flow_format);
1348 read_flows_from_switch(vconn, flow_format, &cls, SWITCH_IDX);
1350 list_init(&requests);
1352 /* Delete flows that exist on the switch but not in the file. */
1353 cls_cursor_init(&cursor, &cls, NULL);
1354 CLS_CURSOR_FOR_EACH (fte, rule, &cursor) {
1355 struct fte_version *file_ver = fte->versions[FILE_IDX];
1356 struct fte_version *sw_ver = fte->versions[SWITCH_IDX];
1358 if (sw_ver && !file_ver) {
1359 fte_make_flow_mod(fte, SWITCH_IDX, OFPFC_DELETE_STRICT,
1360 flow_format, &requests);
1364 /* Add flows that exist in the file but not on the switch.
1365 * Update flows that exist in both places but differ. */
1366 cls_cursor_init(&cursor, &cls, NULL);
1367 CLS_CURSOR_FOR_EACH (fte, rule, &cursor) {
1368 struct fte_version *file_ver = fte->versions[FILE_IDX];
1369 struct fte_version *sw_ver = fte->versions[SWITCH_IDX];
1372 && (readd || !sw_ver || !fte_version_equals(sw_ver, file_ver))) {
1373 fte_make_flow_mod(fte, FILE_IDX, OFPFC_ADD, flow_format,
1377 transact_multiple_noreply(vconn, &requests);
1384 read_flows_from_source(const char *source, struct classifier *cls, int index)
1388 if (source[0] == '/' || source[0] == '.'
1389 || (!strchr(source, ':') && !stat(source, &s))) {
1390 read_flows_from_file(source, cls, index);
1392 enum nx_flow_format flow_format;
1393 struct vconn *vconn;
1395 open_vconn(source, &vconn);
1396 flow_format = negotiate_highest_flow_format(vconn, NXFF_OPENFLOW10);
1397 read_flows_from_switch(vconn, flow_format, cls, index);
1403 do_diff_flows(int argc OVS_UNUSED, char *argv[])
1405 bool differences = false;
1406 struct cls_cursor cursor;
1407 struct classifier cls;
1410 classifier_init(&cls);
1411 read_flows_from_source(argv[1], &cls, 0);
1412 read_flows_from_source(argv[2], &cls, 1);
1414 cls_cursor_init(&cursor, &cls, NULL);
1415 CLS_CURSOR_FOR_EACH (fte, rule, &cursor) {
1416 struct fte_version *a = fte->versions[0];
1417 struct fte_version *b = fte->versions[1];
1419 if (!a || !b || !fte_version_equals(a, b)) {
1420 char *rule_s = cls_rule_to_string(&fte->rule);
1422 printf("-%s", rule_s);
1423 fte_version_print(a);
1426 printf("+%s", rule_s);
1427 fte_version_print(b);
1442 /* Undocumented commands for unit testing. */
1445 print_packet_list(struct list *packets)
1447 struct ofpbuf *packet, *next;
1449 LIST_FOR_EACH_SAFE (packet, next, list_node, packets) {
1450 ofp_print(stdout, packet->data, packet->size, verbosity);
1451 list_remove(&packet->list_node);
1452 ofpbuf_delete(packet);
1456 /* "parse-flow FLOW": parses the argument as a flow (like add-flow) and prints
1457 * it back to stdout. */
1459 do_parse_flow(int argc OVS_UNUSED, char *argv[])
1461 enum nx_flow_format flow_format;
1462 bool flow_mod_table_id;
1463 struct list packets;
1465 flow_format = NXFF_OPENFLOW10;
1466 if (preferred_flow_format > 0) {
1467 flow_format = preferred_flow_format;
1469 flow_mod_table_id = false;
1471 list_init(&packets);
1472 parse_ofp_flow_mod_str(&packets, &flow_format, &flow_mod_table_id,
1473 argv[1], OFPFC_ADD, false);
1474 print_packet_list(&packets);
1477 /* "parse-flows FILENAME": reads the named file as a sequence of flows (like
1478 * add-flows) and prints each of the flows back to stdout. */
1480 do_parse_flows(int argc OVS_UNUSED, char *argv[])
1482 enum nx_flow_format flow_format;
1483 bool flow_mod_table_id;
1484 struct list packets;
1487 file = fopen(argv[1], "r");
1489 ovs_fatal(errno, "%s: open", argv[1]);
1492 flow_format = NXFF_OPENFLOW10;
1493 if (preferred_flow_format > 0) {
1494 flow_format = preferred_flow_format;
1496 flow_mod_table_id = false;
1498 list_init(&packets);
1499 while (parse_ofp_flow_mod_file(&packets, &flow_format, &flow_mod_table_id,
1501 print_packet_list(&packets);
1506 /* "parse-nx-match": reads a series of nx_match specifications as strings from
1507 * stdin, does some internal fussing with them, and then prints them back as
1508 * strings on stdout. */
1510 do_parse_nx_match(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
1515 while (!ds_get_line(&in, stdin)) {
1516 struct ofpbuf nx_match;
1517 struct cls_rule rule;
1518 ovs_be64 cookie, cookie_mask;
1523 /* Delete comments, skip blank lines. */
1529 if (strchr(s, '#')) {
1530 *strchr(s, '#') = '\0';
1532 if (s[strspn(s, " ")] == '\0') {
1537 /* Convert string to nx_match. */
1538 ofpbuf_init(&nx_match, 0);
1539 match_len = nx_match_from_string(ds_cstr(&in), &nx_match);
1541 /* Convert nx_match to cls_rule. */
1542 error = nx_pull_match(&nx_match, match_len, 0, &rule,
1543 &cookie, &cookie_mask);
1547 /* Convert cls_rule back to nx_match. */
1548 ofpbuf_uninit(&nx_match);
1549 ofpbuf_init(&nx_match, 0);
1550 match_len = nx_put_match(&nx_match, &rule, cookie, cookie_mask);
1552 /* Convert nx_match to string. */
1553 out = nx_match_to_string(nx_match.data, match_len);
1557 printf("nx_pull_match() returned error %x (%s)\n", error,
1558 ofputil_error_to_string(error));
1561 ofpbuf_uninit(&nx_match);
1566 /* "ofp-print HEXSTRING [VERBOSITY]": Converts the hex digits in HEXSTRING into
1567 * binary data, interpreting them as an OpenFlow message, and prints the
1568 * OpenFlow message on stdout, at VERBOSITY (level 2 by default). */
1570 do_ofp_print(int argc, char *argv[])
1572 struct ofpbuf packet;
1574 ofpbuf_init(&packet, strlen(argv[1]) / 2);
1575 if (ofpbuf_put_hex(&packet, argv[1], NULL)[0] != '\0') {
1576 ovs_fatal(0, "trailing garbage following hex bytes");
1578 ofp_print(stdout, packet.data, packet.size, argc > 2 ? atoi(argv[2]) : 2);
1579 ofpbuf_uninit(&packet);
1582 static const struct command all_commands[] = {
1583 { "show", 1, 1, do_show },
1584 { "monitor", 1, 2, do_monitor },
1585 { "snoop", 1, 1, do_snoop },
1586 { "dump-desc", 1, 1, do_dump_desc },
1587 { "dump-tables", 1, 1, do_dump_tables },
1588 { "dump-flows", 1, 2, do_dump_flows },
1589 { "dump-aggregate", 1, 2, do_dump_aggregate },
1590 { "queue-stats", 1, 3, do_queue_stats },
1591 { "add-flow", 2, 2, do_add_flow },
1592 { "add-flows", 2, 2, do_add_flows },
1593 { "mod-flows", 2, 2, do_mod_flows },
1594 { "del-flows", 1, 2, do_del_flows },
1595 { "replace-flows", 2, 2, do_replace_flows },
1596 { "diff-flows", 2, 2, do_diff_flows },
1597 { "dump-ports", 1, 2, do_dump_ports },
1598 { "mod-port", 3, 3, do_mod_port },
1599 { "get-frags", 1, 1, do_get_frags },
1600 { "set-frags", 2, 2, do_set_frags },
1601 { "probe", 1, 1, do_probe },
1602 { "ping", 1, 2, do_ping },
1603 { "benchmark", 3, 3, do_benchmark },
1604 { "help", 0, INT_MAX, do_help },
1606 /* Undocumented commands for testing. */
1607 { "parse-flow", 1, 1, do_parse_flow },
1608 { "parse-flows", 1, 1, do_parse_flows },
1609 { "parse-nx-match", 0, 0, do_parse_nx_match },
1610 { "ofp-print", 1, 2, do_ofp_print },
1612 { NULL, 0, 0, NULL },