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.
29 #include "byte-order.h"
30 #include "classifier.h"
31 #include "command-line.h"
35 #include "dynamic-string.h"
39 #include "ofp-parse.h"
40 #include "ofp-print.h"
43 #include "openflow/nicira-ext.h"
44 #include "openflow/openflow.h"
46 #include "stream-ssl.h"
52 VLOG_DEFINE_THIS_MODULE(ofctl
);
54 /* --strict: Use strict matching for flow mod commands? */
57 /* -F, --flow-format: Flow format to use. Either one of NXFF_* to force a
58 * particular flow format or -1 to let ovs-ofctl choose intelligently. */
59 static int preferred_flow_format
= -1;
61 /* -m, --more: Additional verbosity for ofp-print functions. */
64 static const struct command all_commands
[];
66 static void usage(void) NO_RETURN
;
67 static void parse_options(int argc
, char *argv
[]);
70 main(int argc
, char *argv
[])
72 set_program_name(argv
[0]);
73 parse_options(argc
, argv
);
74 signal(SIGPIPE
, SIG_IGN
);
75 run_command(argc
- optind
, argv
+ optind
, all_commands
);
80 parse_options(int argc
, char *argv
[])
83 OPT_STRICT
= UCHAR_MAX
+ 1,
86 static struct option long_options
[] = {
87 {"timeout", required_argument
, 0, 't'},
88 {"strict", no_argument
, 0, OPT_STRICT
},
89 {"flow-format", required_argument
, 0, 'F'},
90 {"more", no_argument
, 0, 'm'},
91 {"help", no_argument
, 0, 'h'},
92 {"version", no_argument
, 0, 'V'},
94 STREAM_SSL_LONG_OPTIONS
97 char *short_options
= long_options_to_short_options(long_options
);
100 unsigned long int timeout
;
103 c
= getopt_long(argc
, argv
, short_options
, long_options
, NULL
);
110 timeout
= strtoul(optarg
, NULL
, 10);
112 ovs_fatal(0, "value %s on -t or --timeout is not at least 1",
120 preferred_flow_format
= ofputil_flow_format_from_string(optarg
);
121 if (preferred_flow_format
< 0) {
122 ovs_fatal(0, "unknown flow format `%s'", optarg
);
134 OVS_PRINT_VERSION(OFP_VERSION
, OFP_VERSION
);
142 STREAM_SSL_OPTION_HANDLERS
157 printf("%s: OpenFlow switch management utility\n"
158 "usage: %s [OPTIONS] COMMAND [ARG...]\n"
159 "\nFor OpenFlow switches:\n"
160 " show SWITCH show OpenFlow information\n"
161 " dump-desc SWITCH print switch description\n"
162 " dump-tables SWITCH print table stats\n"
163 " mod-port SWITCH IFACE ACT modify port behavior\n"
164 " dump-ports SWITCH [PORT] print port statistics\n"
165 " dump-flows SWITCH print all flow entries\n"
166 " dump-flows SWITCH FLOW print matching FLOWs\n"
167 " dump-aggregate SWITCH print aggregate flow statistics\n"
168 " dump-aggregate SWITCH FLOW print aggregate stats for FLOWs\n"
169 " queue-stats SWITCH [PORT [QUEUE]] dump queue stats\n"
170 " add-flow SWITCH FLOW add flow described by FLOW\n"
171 " add-flows SWITCH FILE add flows from FILE\n"
172 " mod-flows SWITCH FLOW modify actions of matching FLOWs\n"
173 " del-flows SWITCH [FLOW] delete matching FLOWs\n"
174 " monitor SWITCH [MISSLEN] print packets received from SWITCH\n"
175 "\nFor OpenFlow switches and controllers:\n"
176 " probe VCONN probe whether VCONN is up\n"
177 " ping VCONN [N] latency of N-byte echos\n"
178 " benchmark VCONN N COUNT bandwidth of COUNT N-byte echos\n"
179 "where each SWITCH is an active OpenFlow connection method.\n",
180 program_name
, program_name
);
181 vconn_usage(true, false, false);
183 printf("\nOther options:\n"
184 " --strict use strict match for flow commands\n"
185 " -F, --flow-format=FORMAT force particular flow format\n"
186 " -m, --more be more verbose printing OpenFlow\n"
187 " -t, --timeout=SECS give up after SECS seconds\n"
188 " -h, --help display this help message\n"
189 " -V, --version display version information\n");
193 static void run(int retval
, const char *message
, ...)
196 static void run(int retval
, const char *message
, ...)
201 fprintf(stderr
, "%s: ", program_name
);
202 va_start(args
, message
);
203 vfprintf(stderr
, message
, args
);
206 fputs(": unexpected end of file\n", stderr
);
208 fprintf(stderr
, ": %s\n", strerror(retval
));
215 /* Generic commands. */
218 open_vconn_socket(const char *name
, struct vconn
**vconnp
)
220 char *vconn_name
= xasprintf("unix:%s", name
);
221 VLOG_DBG("connecting to %s", vconn_name
);
222 run(vconn_open_block(vconn_name
, OFP_VERSION
, vconnp
),
223 "connecting to %s", vconn_name
);
228 open_vconn__(const char *name
, const char *default_suffix
,
229 struct vconn
**vconnp
)
233 char *bridge_path
, *datapath_name
, *datapath_type
;
235 bridge_path
= xasprintf("%s/%s.%s", ovs_rundir(), name
, default_suffix
);
236 dp_parse_name(name
, &datapath_name
, &datapath_type
);
238 if (strstr(name
, ":")) {
239 run(vconn_open_block(name
, OFP_VERSION
, vconnp
),
240 "connecting to %s", name
);
241 } else if (!stat(name
, &s
) && S_ISSOCK(s
.st_mode
)) {
242 open_vconn_socket(name
, vconnp
);
243 } else if (!stat(bridge_path
, &s
) && S_ISSOCK(s
.st_mode
)) {
244 open_vconn_socket(bridge_path
, vconnp
);
245 } else if (!dpif_open(datapath_name
, datapath_type
, &dpif
)) {
246 char dpif_name
[IF_NAMESIZE
+ 1];
249 run(dpif_port_get_name(dpif
, ODPP_LOCAL
, dpif_name
, sizeof dpif_name
),
250 "obtaining name of %s", dpif_name
);
252 if (strcmp(dpif_name
, name
)) {
253 VLOG_DBG("datapath %s is named %s", name
, dpif_name
);
256 socket_name
= xasprintf("%s/%s.%s",
257 ovs_rundir(), dpif_name
, default_suffix
);
258 if (stat(socket_name
, &s
)) {
259 ovs_fatal(errno
, "cannot connect to %s: stat failed on %s",
261 } else if (!S_ISSOCK(s
.st_mode
)) {
262 ovs_fatal(0, "cannot connect to %s: %s is not a socket",
266 open_vconn_socket(socket_name
, vconnp
);
269 ovs_fatal(0, "%s is not a valid connection method", name
);
278 open_vconn(const char *name
, struct vconn
**vconnp
)
280 return open_vconn__(name
, "mgmt", vconnp
);
284 alloc_stats_request(size_t body_len
, uint16_t type
, struct ofpbuf
**bufferp
)
286 struct ofp_stats_request
*rq
;
287 rq
= make_openflow((offsetof(struct ofp_stats_request
, body
)
288 + body_len
), OFPT_STATS_REQUEST
, bufferp
);
289 rq
->type
= htons(type
);
290 rq
->flags
= htons(0);
295 send_openflow_buffer(struct vconn
*vconn
, struct ofpbuf
*buffer
)
297 update_openflow_length(buffer
);
298 run(vconn_send_block(vconn
, buffer
), "failed to send packet to switch");
302 dump_transaction(const char *vconn_name
, struct ofpbuf
*request
)
305 struct ofpbuf
*reply
;
307 update_openflow_length(request
);
308 open_vconn(vconn_name
, &vconn
);
309 run(vconn_transact(vconn
, request
, &reply
), "talking to %s", vconn_name
);
310 ofp_print(stdout
, reply
->data
, reply
->size
, verbosity
+ 1);
315 dump_trivial_transaction(const char *vconn_name
, uint8_t request_type
)
317 struct ofpbuf
*request
;
318 make_openflow(sizeof(struct ofp_header
), request_type
, &request
);
319 dump_transaction(vconn_name
, request
);
323 dump_stats_transaction(const char *vconn_name
, struct ofpbuf
*request
)
325 ovs_be32 send_xid
= ((struct ofp_header
*) request
->data
)->xid
;
329 open_vconn(vconn_name
, &vconn
);
330 send_openflow_buffer(vconn
, request
);
333 struct ofpbuf
*reply
;
335 run(vconn_recv_block(vconn
, &reply
), "OpenFlow packet receive failed");
336 recv_xid
= ((struct ofp_header
*) reply
->data
)->xid
;
337 if (send_xid
== recv_xid
) {
338 struct ofp_stats_reply
*osr
;
340 ofp_print(stdout
, reply
->data
, reply
->size
, verbosity
+ 1);
342 osr
= ofpbuf_at(reply
, 0, sizeof *osr
);
343 done
= !osr
|| !(ntohs(osr
->flags
) & OFPSF_REPLY_MORE
);
345 VLOG_DBG("received reply with xid %08"PRIx32
" "
346 "!= expected %08"PRIx32
, recv_xid
, send_xid
);
348 ofpbuf_delete(reply
);
354 dump_trivial_stats_transaction(const char *vconn_name
, uint8_t stats_type
)
356 struct ofpbuf
*request
;
357 alloc_stats_request(0, stats_type
, &request
);
358 dump_stats_transaction(vconn_name
, request
);
361 /* Sends 'request', which should be a request that only has a reply if an error
362 * occurs, and waits for it to succeed or fail. If an error does occur, prints
363 * it and exits with an error. */
365 transact_multiple_noreply(struct vconn
*vconn
, struct list
*requests
)
367 struct ofpbuf
*request
, *reply
;
369 LIST_FOR_EACH (request
, list_node
, requests
) {
370 update_openflow_length(request
);
373 run(vconn_transact_multiple_noreply(vconn
, requests
, &reply
),
374 "talking to %s", vconn_get_name(vconn
));
376 ofp_print(stderr
, reply
->data
, reply
->size
, verbosity
+ 2);
379 ofpbuf_delete(reply
);
382 /* Sends 'request', which should be a request that only has a reply if an error
383 * occurs, and waits for it to succeed or fail. If an error does occur, prints
384 * it and exits with an error. */
386 transact_noreply(struct vconn
*vconn
, struct ofpbuf
*request
)
388 struct list requests
;
390 list_init(&requests
);
391 list_push_back(&requests
, &request
->list_node
);
392 transact_multiple_noreply(vconn
, &requests
);
396 do_show(int argc OVS_UNUSED
, char *argv
[])
398 dump_trivial_transaction(argv
[1], OFPT_FEATURES_REQUEST
);
399 dump_trivial_transaction(argv
[1], OFPT_GET_CONFIG_REQUEST
);
403 do_dump_desc(int argc OVS_UNUSED
, char *argv
[])
405 dump_trivial_stats_transaction(argv
[1], OFPST_DESC
);
409 do_dump_tables(int argc OVS_UNUSED
, char *argv
[])
411 dump_trivial_stats_transaction(argv
[1], OFPST_TABLE
);
414 /* Opens a connection to 'vconn_name', fetches the ofp_phy_port structure for
415 * 'port_name' (which may be a port name or number), and copies it into
418 fetch_ofp_phy_port(const char *vconn_name
, const char *port_name
,
419 struct ofp_phy_port
*oppp
)
421 struct ofpbuf
*request
, *reply
;
422 struct ofp_switch_features
*osf
;
423 unsigned int port_no
;
428 /* Try to interpret the argument as a port number. */
429 if (!str_to_uint(port_name
, 10, &port_no
)) {
433 /* Fetch the switch's ofp_switch_features. */
434 make_openflow(sizeof(struct ofp_header
), OFPT_FEATURES_REQUEST
, &request
);
435 open_vconn(vconn_name
, &vconn
);
436 run(vconn_transact(vconn
, request
, &reply
), "talking to %s", vconn_name
);
439 if (reply
->size
< sizeof *osf
) {
440 ovs_fatal(0, "%s: received too-short features reply (only %zu bytes)",
441 vconn_name
, reply
->size
);
443 n_ports
= (reply
->size
- sizeof *osf
) / sizeof *osf
->ports
;
445 for (port_idx
= 0; port_idx
< n_ports
; port_idx
++) {
446 const struct ofp_phy_port
*opp
= &osf
->ports
[port_idx
];
448 if (port_no
!= UINT_MAX
449 ? htons(port_no
) == opp
->port_no
450 : !strncmp(opp
->name
, port_name
, sizeof opp
->name
)) {
452 ofpbuf_delete(reply
);
457 ovs_fatal(0, "%s: couldn't find port `%s'", vconn_name
, port_name
);
460 /* Returns the port number corresponding to 'port_name' (which may be a port
461 * name or number) within the switch 'vconn_name'. */
463 str_to_port_no(const char *vconn_name
, const char *port_name
)
465 unsigned int port_no
;
467 if (str_to_uint(port_name
, 10, &port_no
)) {
470 struct ofp_phy_port opp
;
472 fetch_ofp_phy_port(vconn_name
, port_name
, &opp
);
473 return ntohs(opp
.port_no
);
478 try_set_flow_format(struct vconn
*vconn
, enum nx_flow_format flow_format
)
480 struct ofpbuf
*sff
, *reply
;
482 sff
= ofputil_make_set_flow_format(flow_format
);
483 run(vconn_transact_noreply(vconn
, sff
, &reply
),
484 "talking to %s", vconn_get_name(vconn
));
486 char *s
= ofp_to_string(reply
->data
, reply
->size
, 2);
487 VLOG_DBG("%s: failed to set flow format %s, controller replied: %s",
488 vconn_get_name(vconn
),
489 ofputil_flow_format_to_string(flow_format
),
492 ofpbuf_delete(reply
);
499 set_flow_format(struct vconn
*vconn
, enum nx_flow_format flow_format
)
501 struct ofpbuf
*sff
= ofputil_make_set_flow_format(flow_format
);
502 transact_noreply(vconn
, sff
);
503 VLOG_DBG("%s: using user-specified flow format %s",
504 vconn_get_name(vconn
),
505 ofputil_flow_format_to_string(flow_format
));
508 static enum nx_flow_format
509 negotiate_highest_flow_format(struct vconn
*vconn
,
510 enum nx_flow_format min_format
)
512 if (preferred_flow_format
!= -1) {
513 if (preferred_flow_format
< min_format
) {
514 ovs_fatal(0, "%s: cannot use requested flow format %s for "
515 "specified flow", vconn_get_name(vconn
),
516 ofputil_flow_format_to_string(min_format
));
519 set_flow_format(vconn
, preferred_flow_format
);
520 return preferred_flow_format
;
522 enum nx_flow_format flow_format
;
524 if (try_set_flow_format(vconn
, NXFF_NXM
)) {
525 flow_format
= NXFF_NXM
;
526 } else if (try_set_flow_format(vconn
, NXFF_TUN_ID_FROM_COOKIE
)) {
527 flow_format
= NXFF_TUN_ID_FROM_COOKIE
;
529 flow_format
= NXFF_OPENFLOW10
;
532 if (flow_format
< min_format
) {
533 ovs_fatal(0, "%s: cannot use switch's most advanced flow format "
534 "%s for specified flow", vconn_get_name(vconn
),
535 ofputil_flow_format_to_string(min_format
));
538 VLOG_DBG("%s: negotiated flow format %s", vconn_get_name(vconn
),
539 ofputil_flow_format_to_string(flow_format
));
545 do_dump_flows__(int argc
, char *argv
[], bool aggregate
)
547 enum nx_flow_format min_flow_format
, flow_format
;
548 struct flow_stats_request fsr
;
549 struct ofpbuf
*request
;
552 parse_ofp_flow_stats_request_str(&fsr
, aggregate
, argc
> 2 ? argv
[2] : "");
554 open_vconn(argv
[1], &vconn
);
555 min_flow_format
= ofputil_min_flow_format(&fsr
.match
, false, 0);
556 flow_format
= negotiate_highest_flow_format(vconn
, min_flow_format
);
557 request
= ofputil_encode_flow_stats_request(&fsr
, flow_format
);
558 dump_stats_transaction(argv
[1], request
);
563 do_dump_flows(int argc
, char *argv
[])
565 return do_dump_flows__(argc
, argv
, false);
569 do_dump_aggregate(int argc
, char *argv
[])
571 return do_dump_flows__(argc
, argv
, true);
575 do_queue_stats(int argc
, char *argv
[])
577 struct ofp_queue_stats_request
*req
;
578 struct ofpbuf
*request
;
580 req
= alloc_stats_request(sizeof *req
, OFPST_QUEUE
, &request
);
582 if (argc
> 2 && argv
[2][0] && strcasecmp(argv
[2], "all")) {
583 req
->port_no
= htons(str_to_port_no(argv
[1], argv
[2]));
585 req
->port_no
= htons(OFPP_ALL
);
587 if (argc
> 3 && argv
[3][0] && strcasecmp(argv
[3], "all")) {
588 req
->queue_id
= htonl(atoi(argv
[3]));
590 req
->queue_id
= htonl(OFPQ_ALL
);
593 memset(req
->pad
, 0, sizeof req
->pad
);
595 dump_stats_transaction(argv
[1], request
);
598 /* Sets up the flow format for a vconn that will be used to modify the flow
599 * table. Returns the flow format used, after possibly adding an OpenFlow
600 * request to 'requests'.
602 * If 'preferred_flow_format' is -1, returns NXFF_OPENFLOW10 without modifying
603 * 'requests', since NXFF_OPENFLOW10 is the default flow format for any
604 * OpenFlow connection.
606 * If 'preferred_flow_format' is a specific format, adds a request to set that
607 * format to 'requests' and returns the format. */
608 static enum nx_flow_format
609 set_initial_format_for_flow_mod(struct list
*requests
)
611 if (preferred_flow_format
< 0) {
612 return NXFF_OPENFLOW10
;
616 sff
= ofputil_make_set_flow_format(preferred_flow_format
);
617 list_push_back(requests
, &sff
->list_node
);
618 return preferred_flow_format
;
622 /* Checks that 'flow_format' is acceptable as a flow format after a flow_mod
623 * operation, given the global 'preferred_flow_format'. */
625 check_final_format_for_flow_mod(enum nx_flow_format flow_format
)
627 if (preferred_flow_format
>= 0 && flow_format
> preferred_flow_format
) {
628 ovs_fatal(0, "flow cannot be expressed in flow format %s "
629 "(flow format %s or better is required)",
630 ofputil_flow_format_to_string(preferred_flow_format
),
631 ofputil_flow_format_to_string(flow_format
));
636 do_flow_mod_file__(int argc OVS_UNUSED
, char *argv
[], uint16_t command
)
638 enum nx_flow_format flow_format
;
639 struct list requests
;
643 file
= !strcmp(argv
[2], "-") ? stdin
: fopen(argv
[2], "r");
645 ovs_fatal(errno
, "%s: open", argv
[2]);
648 list_init(&requests
);
649 flow_format
= set_initial_format_for_flow_mod(&requests
);
651 open_vconn(argv
[1], &vconn
);
652 while (parse_ofp_flow_mod_file(&requests
, &flow_format
, file
, command
)) {
653 check_final_format_for_flow_mod(flow_format
);
654 transact_multiple_noreply(vconn
, &requests
);
664 do_flow_mod__(int argc
, char *argv
[], uint16_t command
)
666 enum nx_flow_format flow_format
;
667 struct list requests
;
670 if (argc
> 2 && !strcmp(argv
[2], "-")) {
671 do_flow_mod_file__(argc
, argv
, command
);
675 list_init(&requests
);
676 flow_format
= set_initial_format_for_flow_mod(&requests
);
678 parse_ofp_flow_mod_str(&requests
, &flow_format
, argc
> 2 ? argv
[2] : "",
680 check_final_format_for_flow_mod(flow_format
);
682 open_vconn(argv
[1], &vconn
);
683 transact_multiple_noreply(vconn
, &requests
);
688 do_add_flow(int argc
, char *argv
[])
690 do_flow_mod__(argc
, argv
, OFPFC_ADD
);
694 do_add_flows(int argc
, char *argv
[])
696 do_flow_mod_file__(argc
, argv
, OFPFC_ADD
);
700 do_mod_flows(int argc
, char *argv
[])
702 do_flow_mod__(argc
, argv
, strict
? OFPFC_MODIFY_STRICT
: OFPFC_MODIFY
);
706 do_del_flows(int argc
, char *argv
[])
708 do_flow_mod__(argc
, argv
, strict
? OFPFC_DELETE_STRICT
: OFPFC_DELETE
);
712 monitor_vconn(struct vconn
*vconn
)
716 run(vconn_recv_block(vconn
, &b
), "vconn_recv");
717 ofp_print(stderr
, b
->data
, b
->size
, verbosity
+ 2);
723 do_monitor(int argc
, char *argv
[])
727 open_vconn(argv
[1], &vconn
);
729 int miss_send_len
= atoi(argv
[2]);
730 struct ofp_switch_config
*osc
;
733 osc
= make_openflow(sizeof *osc
, OFPT_SET_CONFIG
, &buf
);
734 osc
->miss_send_len
= htons(miss_send_len
);
735 transact_noreply(vconn
, buf
);
737 monitor_vconn(vconn
);
741 do_snoop(int argc OVS_UNUSED
, char *argv
[])
745 open_vconn__(argv
[1], "snoop", &vconn
);
746 monitor_vconn(vconn
);
750 do_dump_ports(int argc
, char *argv
[])
752 struct ofp_port_stats_request
*req
;
753 struct ofpbuf
*request
;
756 req
= alloc_stats_request(sizeof *req
, OFPST_PORT
, &request
);
757 port
= argc
> 2 ? str_to_port_no(argv
[1], argv
[2]) : OFPP_NONE
;
758 req
->port_no
= htons(port
);
759 dump_stats_transaction(argv
[1], request
);
763 do_probe(int argc OVS_UNUSED
, char *argv
[])
765 struct ofpbuf
*request
;
767 struct ofpbuf
*reply
;
769 make_openflow(sizeof(struct ofp_header
), OFPT_ECHO_REQUEST
, &request
);
770 open_vconn(argv
[1], &vconn
);
771 run(vconn_transact(vconn
, request
, &reply
), "talking to %s", argv
[1]);
772 if (reply
->size
!= sizeof(struct ofp_header
)) {
773 ovs_fatal(0, "reply does not match request");
775 ofpbuf_delete(reply
);
780 do_mod_port(int argc OVS_UNUSED
, char *argv
[])
782 struct ofp_port_mod
*opm
;
783 struct ofp_phy_port opp
;
784 struct ofpbuf
*request
;
787 fetch_ofp_phy_port(argv
[1], argv
[2], &opp
);
789 opm
= make_openflow(sizeof(struct ofp_port_mod
), OFPT_PORT_MOD
, &request
);
790 opm
->port_no
= opp
.port_no
;
791 memcpy(opm
->hw_addr
, opp
.hw_addr
, sizeof opm
->hw_addr
);
792 opm
->config
= htonl(0);
793 opm
->mask
= htonl(0);
794 opm
->advertise
= htonl(0);
796 if (!strcasecmp(argv
[3], "up")) {
797 opm
->mask
|= htonl(OFPPC_PORT_DOWN
);
798 } else if (!strcasecmp(argv
[3], "down")) {
799 opm
->mask
|= htonl(OFPPC_PORT_DOWN
);
800 opm
->config
|= htonl(OFPPC_PORT_DOWN
);
801 } else if (!strcasecmp(argv
[3], "flood")) {
802 opm
->mask
|= htonl(OFPPC_NO_FLOOD
);
803 } else if (!strcasecmp(argv
[3], "noflood")) {
804 opm
->mask
|= htonl(OFPPC_NO_FLOOD
);
805 opm
->config
|= htonl(OFPPC_NO_FLOOD
);
807 ovs_fatal(0, "unknown mod-port command '%s'", argv
[3]);
810 open_vconn(argv
[1], &vconn
);
811 transact_noreply(vconn
, request
);
816 do_ping(int argc
, char *argv
[])
818 size_t max_payload
= 65535 - sizeof(struct ofp_header
);
819 unsigned int payload
;
823 payload
= argc
> 2 ? atoi(argv
[2]) : 64;
824 if (payload
> max_payload
) {
825 ovs_fatal(0, "payload must be between 0 and %zu bytes", max_payload
);
828 open_vconn(argv
[1], &vconn
);
829 for (i
= 0; i
< 10; i
++) {
830 struct timeval start
, end
;
831 struct ofpbuf
*request
, *reply
;
832 struct ofp_header
*rq_hdr
, *rpy_hdr
;
834 rq_hdr
= make_openflow(sizeof(struct ofp_header
) + payload
,
835 OFPT_ECHO_REQUEST
, &request
);
836 random_bytes(rq_hdr
+ 1, payload
);
838 gettimeofday(&start
, NULL
);
839 run(vconn_transact(vconn
, ofpbuf_clone(request
), &reply
), "transact");
840 gettimeofday(&end
, NULL
);
842 rpy_hdr
= reply
->data
;
843 if (reply
->size
!= request
->size
844 || memcmp(rpy_hdr
+ 1, rq_hdr
+ 1, payload
)
845 || rpy_hdr
->xid
!= rq_hdr
->xid
846 || rpy_hdr
->type
!= OFPT_ECHO_REPLY
) {
847 printf("Reply does not match request. Request:\n");
848 ofp_print(stdout
, request
, request
->size
, verbosity
+ 2);
850 ofp_print(stdout
, reply
, reply
->size
, verbosity
+ 2);
852 printf("%zu bytes from %s: xid=%08"PRIx32
" time=%.1f ms\n",
853 reply
->size
- sizeof *rpy_hdr
, argv
[1], ntohl(rpy_hdr
->xid
),
854 (1000*(double)(end
.tv_sec
- start
.tv_sec
))
855 + (.001*(end
.tv_usec
- start
.tv_usec
)));
856 ofpbuf_delete(request
);
857 ofpbuf_delete(reply
);
863 do_benchmark(int argc OVS_UNUSED
, char *argv
[])
865 size_t max_payload
= 65535 - sizeof(struct ofp_header
);
866 struct timeval start
, end
;
867 unsigned int payload_size
, message_size
;
873 payload_size
= atoi(argv
[2]);
874 if (payload_size
> max_payload
) {
875 ovs_fatal(0, "payload must be between 0 and %zu bytes", max_payload
);
877 message_size
= sizeof(struct ofp_header
) + payload_size
;
879 count
= atoi(argv
[3]);
881 printf("Sending %d packets * %u bytes (with header) = %u bytes total\n",
882 count
, message_size
, count
* message_size
);
884 open_vconn(argv
[1], &vconn
);
885 gettimeofday(&start
, NULL
);
886 for (i
= 0; i
< count
; i
++) {
887 struct ofpbuf
*request
, *reply
;
888 struct ofp_header
*rq_hdr
;
890 rq_hdr
= make_openflow(message_size
, OFPT_ECHO_REQUEST
, &request
);
891 memset(rq_hdr
+ 1, 0, payload_size
);
892 run(vconn_transact(vconn
, request
, &reply
), "transact");
893 ofpbuf_delete(reply
);
895 gettimeofday(&end
, NULL
);
898 duration
= ((1000*(double)(end
.tv_sec
- start
.tv_sec
))
899 + (.001*(end
.tv_usec
- start
.tv_usec
)));
900 printf("Finished in %.1f ms (%.0f packets/s) (%.0f bytes/s)\n",
901 duration
, count
/ (duration
/ 1000.0),
902 count
* message_size
/ (duration
/ 1000.0));
906 do_help(int argc OVS_UNUSED
, char *argv
[] OVS_UNUSED
)
911 /* replace-flows and diff-flows commands. */
913 /* A flow table entry, possibly with two different versions. */
915 struct cls_rule rule
; /* Within a "struct classifier". */
916 struct fte_version
*versions
[2];
919 /* One version of a Flow Table Entry. */
922 uint16_t idle_timeout
;
923 uint16_t hard_timeout
;
925 union ofp_action
*actions
;
929 /* Frees 'version' and the data that it owns. */
931 fte_version_free(struct fte_version
*version
)
934 free(version
->actions
);
939 /* Returns true if 'a' and 'b' are the same, false if they differ.
941 * Ignores differences in 'flags' because there's no way to retrieve flags from
942 * an OpenFlow switch. We have to assume that they are the same. */
944 fte_version_equals(const struct fte_version
*a
, const struct fte_version
*b
)
946 return (a
->cookie
== b
->cookie
947 && a
->idle_timeout
== b
->idle_timeout
948 && a
->hard_timeout
== b
->hard_timeout
949 && a
->n_actions
== b
->n_actions
950 && !memcmp(a
->actions
, b
->actions
,
951 a
->n_actions
* sizeof *a
->actions
));
954 /* Prints 'version' on stdout. Expects the caller to have printed the rule
955 * associated with the version. */
957 fte_version_print(const struct fte_version
*version
)
961 if (version
->cookie
!= htonll(0)) {
962 printf(" cookie=0x%"PRIx64
, ntohll(version
->cookie
));
964 if (version
->idle_timeout
!= OFP_FLOW_PERMANENT
) {
965 printf(" idle_timeout=%"PRIu16
, version
->idle_timeout
);
967 if (version
->hard_timeout
!= OFP_FLOW_PERMANENT
) {
968 printf(" hard_timeout=%"PRIu16
, version
->hard_timeout
);
972 ofp_print_actions(&s
, (const struct ofp_action_header
*) version
->actions
,
973 version
->n_actions
* sizeof *version
->actions
);
974 printf(" %s\n", ds_cstr(&s
));
979 fte_from_cls_rule(const struct cls_rule
*cls_rule
)
981 return cls_rule
? CONTAINER_OF(cls_rule
, struct fte
, rule
) : NULL
;
984 /* Frees 'fte' and its versions. */
986 fte_free(struct fte
*fte
)
989 fte_version_free(fte
->versions
[0]);
990 fte_version_free(fte
->versions
[1]);
995 /* Frees all of the FTEs within 'cls'. */
997 fte_free_all(struct classifier
*cls
)
999 struct cls_cursor cursor
;
1000 struct fte
*fte
, *next
;
1002 cls_cursor_init(&cursor
, cls
, NULL
);
1003 CLS_CURSOR_FOR_EACH_SAFE (fte
, next
, rule
, &cursor
) {
1004 classifier_remove(cls
, &fte
->rule
);
1009 /* Searches 'cls' for an FTE matching 'rule', inserting a new one if
1010 * necessary. Sets 'version' as the version of that rule with the given
1011 * 'index', replacing any existing version, if any.
1013 * Takes ownership of 'version'. */
1015 fte_insert(struct classifier
*cls
, const struct cls_rule
*rule
,
1016 struct fte_version
*version
, int index
)
1018 struct fte
*old
, *fte
;
1020 fte
= xzalloc(sizeof *fte
);
1022 fte
->versions
[index
] = version
;
1024 old
= fte_from_cls_rule(classifier_insert(cls
, &fte
->rule
));
1026 fte_version_free(old
->versions
[index
]);
1027 fte
->versions
[!index
] = old
->versions
[!index
];
1032 /* Reads the flows in 'filename' as flow table entries in 'cls' for the version
1033 * with the specified 'index'. Returns the minimum flow format required to
1034 * represent the flows that were read. */
1035 static enum nx_flow_format
1036 read_flows_from_file(const char *filename
, struct classifier
*cls
, int index
)
1038 enum nx_flow_format min_flow_format
;
1042 file
= !strcmp(filename
, "-") ? stdin
: fopen(filename
, "r");
1044 ovs_fatal(errno
, "%s: open", filename
);
1048 min_flow_format
= NXFF_OPENFLOW10
;
1049 while (!ds_get_preprocessed_line(&s
, file
)) {
1050 struct fte_version
*version
;
1051 enum nx_flow_format min_ff
;
1052 struct ofpbuf actions
;
1056 ofpbuf_init(&actions
, 64);
1057 parse_ofp_str(&fm
, &table_idx
, &actions
, ds_cstr(&s
));
1059 version
= xmalloc(sizeof *version
);
1060 version
->cookie
= fm
.cookie
;
1061 version
->idle_timeout
= fm
.idle_timeout
;
1062 version
->hard_timeout
= fm
.hard_timeout
;
1063 version
->flags
= fm
.flags
& (OFPFF_SEND_FLOW_REM
| OFPFF_EMERG
);
1064 version
->n_actions
= actions
.size
/ sizeof *version
->actions
;
1065 version
->actions
= ofpbuf_steal_data(&actions
);
1067 min_ff
= ofputil_min_flow_format(&fm
.cr
, true, fm
.cookie
);
1068 min_flow_format
= MAX(min_flow_format
, min_ff
);
1069 check_final_format_for_flow_mod(min_flow_format
);
1071 fte_insert(cls
, &fm
.cr
, version
, index
);
1075 if (file
!= stdin
) {
1079 return min_flow_format
;
1082 /* Reads the OpenFlow flow table from 'vconn', which has currently active flow
1083 * format 'flow_format', and adds them as flow table entries in 'cls' for the
1084 * version with the specified 'index'. */
1086 read_flows_from_switch(struct vconn
*vconn
, enum nx_flow_format flow_format
,
1087 struct classifier
*cls
, int index
)
1089 struct flow_stats_request fsr
;
1090 struct ofpbuf
*request
;
1094 fsr
.aggregate
= false;
1095 cls_rule_init_catchall(&fsr
.match
, 0);
1096 fsr
.out_port
= OFPP_NONE
;
1097 fsr
.table_id
= 0xff;
1098 request
= ofputil_encode_flow_stats_request(&fsr
, flow_format
);
1099 send_xid
= ((struct ofp_header
*) request
->data
)->xid
;
1100 send_openflow_buffer(vconn
, request
);
1105 struct ofpbuf
*reply
;
1107 run(vconn_recv_block(vconn
, &reply
), "OpenFlow packet receive failed");
1108 recv_xid
= ((struct ofp_header
*) reply
->data
)->xid
;
1109 if (send_xid
== recv_xid
) {
1110 const struct ofputil_msg_type
*type
;
1111 const struct ofp_stats_reply
*osr
;
1112 enum ofputil_msg_code code
;
1114 ofputil_decode_msg_type(reply
->data
, &type
);
1115 code
= ofputil_msg_type_code(type
);
1116 if (code
!= OFPUTIL_OFPST_FLOW_REPLY
&&
1117 code
!= OFPUTIL_NXST_FLOW_REPLY
) {
1118 ovs_fatal(0, "received bad reply: %s",
1119 ofp_to_string(reply
->data
, reply
->size
,
1124 if (!(osr
->flags
& htons(OFPSF_REPLY_MORE
))) {
1129 struct fte_version
*version
;
1130 struct ofputil_flow_stats fs
;
1133 retval
= ofputil_decode_flow_stats_reply(&fs
, reply
,
1136 if (retval
!= EOF
) {
1137 ovs_fatal(0, "parse error in reply");
1142 version
= xmalloc(sizeof *version
);
1143 version
->cookie
= fs
.cookie
;
1144 version
->idle_timeout
= fs
.idle_timeout
;
1145 version
->hard_timeout
= fs
.hard_timeout
;
1147 version
->n_actions
= fs
.n_actions
;
1148 version
->actions
= xmemdup(fs
.actions
,
1149 fs
.n_actions
* sizeof *fs
.actions
);
1151 fte_insert(cls
, &fs
.rule
, version
, index
);
1154 osr
= ofpbuf_at(reply
, 0, sizeof *osr
);
1156 VLOG_DBG("received reply with xid %08"PRIx32
" "
1157 "!= expected %08"PRIx32
, recv_xid
, send_xid
);
1159 ofpbuf_delete(reply
);
1164 fte_make_flow_mod(const struct fte
*fte
, int index
, uint16_t command
,
1165 enum nx_flow_format flow_format
, struct list
*packets
)
1167 const struct fte_version
*version
= fte
->versions
[index
];
1172 fm
.cookie
= version
->cookie
;
1173 fm
.command
= command
;
1174 fm
.idle_timeout
= version
->idle_timeout
;
1175 fm
.hard_timeout
= version
->hard_timeout
;
1176 fm
.buffer_id
= UINT32_MAX
;
1177 fm
.out_port
= OFPP_NONE
;
1178 fm
.flags
= version
->flags
;
1179 if (command
== OFPFC_ADD
|| command
== OFPFC_MODIFY
||
1180 command
== OFPFC_MODIFY_STRICT
) {
1181 fm
.actions
= version
->actions
;
1182 fm
.n_actions
= version
->n_actions
;
1188 ofm
= ofputil_encode_flow_mod(&fm
, flow_format
);
1189 list_push_back(packets
, &ofm
->list_node
);
1193 do_replace_flows(int argc OVS_UNUSED
, char *argv
[])
1195 enum { FILE_IDX
= 0, SWITCH_IDX
= 1 };
1196 enum nx_flow_format min_flow_format
, flow_format
;
1197 struct cls_cursor cursor
;
1198 struct classifier cls
;
1199 struct list requests
;
1200 struct vconn
*vconn
;
1203 classifier_init(&cls
);
1204 min_flow_format
= read_flows_from_file(argv
[2], &cls
, FILE_IDX
);
1206 open_vconn(argv
[1], &vconn
);
1207 flow_format
= negotiate_highest_flow_format(vconn
, min_flow_format
);
1208 read_flows_from_switch(vconn
, flow_format
, &cls
, SWITCH_IDX
);
1210 list_init(&requests
);
1212 /* Delete flows that exist on the switch but not in the file. */
1213 cls_cursor_init(&cursor
, &cls
, NULL
);
1214 CLS_CURSOR_FOR_EACH (fte
, rule
, &cursor
) {
1215 struct fte_version
*file_ver
= fte
->versions
[FILE_IDX
];
1216 struct fte_version
*sw_ver
= fte
->versions
[SWITCH_IDX
];
1218 if (sw_ver
&& !file_ver
) {
1219 fte_make_flow_mod(fte
, SWITCH_IDX
, OFPFC_DELETE_STRICT
,
1220 flow_format
, &requests
);
1224 /* Add flows that exist in the file but not on the switch.
1225 * Update flows that exist in both places but differ. */
1226 cls_cursor_init(&cursor
, &cls
, NULL
);
1227 CLS_CURSOR_FOR_EACH (fte
, rule
, &cursor
) {
1228 struct fte_version
*file_ver
= fte
->versions
[FILE_IDX
];
1229 struct fte_version
*sw_ver
= fte
->versions
[SWITCH_IDX
];
1231 if (file_ver
&& (!sw_ver
|| !fte_version_equals(sw_ver
, file_ver
))) {
1232 fte_make_flow_mod(fte
, FILE_IDX
, OFPFC_ADD
, flow_format
,
1236 transact_multiple_noreply(vconn
, &requests
);
1243 read_flows_from_source(const char *source
, struct classifier
*cls
, int index
)
1247 if (source
[0] == '/' || source
[0] == '.'
1248 || (!strchr(source
, ':') && !stat(source
, &s
))) {
1249 read_flows_from_file(source
, cls
, index
);
1251 enum nx_flow_format flow_format
;
1252 struct vconn
*vconn
;
1254 open_vconn(source
, &vconn
);
1255 flow_format
= negotiate_highest_flow_format(vconn
, NXFF_OPENFLOW10
);
1256 read_flows_from_switch(vconn
, flow_format
, cls
, index
);
1262 do_diff_flows(int argc OVS_UNUSED
, char *argv
[])
1264 bool differences
= false;
1265 struct cls_cursor cursor
;
1266 struct classifier cls
;
1269 classifier_init(&cls
);
1270 read_flows_from_source(argv
[1], &cls
, 0);
1271 read_flows_from_source(argv
[2], &cls
, 1);
1273 cls_cursor_init(&cursor
, &cls
, NULL
);
1274 CLS_CURSOR_FOR_EACH (fte
, rule
, &cursor
) {
1275 struct fte_version
*a
= fte
->versions
[0];
1276 struct fte_version
*b
= fte
->versions
[1];
1278 if (!a
|| !b
|| !fte_version_equals(a
, b
)) {
1279 char *rule_s
= cls_rule_to_string(&fte
->rule
);
1281 printf("-%s", rule_s
);
1282 fte_version_print(a
);
1285 printf("+%s", rule_s
);
1286 fte_version_print(b
);
1301 /* Undocumented commands for unit testing. */
1304 print_packet_list(struct list
*packets
)
1306 struct ofpbuf
*packet
, *next
;
1308 LIST_FOR_EACH_SAFE (packet
, next
, list_node
, packets
) {
1309 ofp_print(stdout
, packet
->data
, packet
->size
, verbosity
);
1310 list_remove(&packet
->list_node
);
1311 ofpbuf_delete(packet
);
1315 /* "parse-flow FLOW": parses the argument as a flow (like add-flow) and prints
1316 * it back to stdout. */
1318 do_parse_flow(int argc OVS_UNUSED
, char *argv
[])
1320 enum nx_flow_format flow_format
;
1321 struct list packets
;
1323 flow_format
= NXFF_OPENFLOW10
;
1324 if (preferred_flow_format
> 0) {
1325 flow_format
= preferred_flow_format
;
1328 list_init(&packets
);
1329 parse_ofp_flow_mod_str(&packets
, &flow_format
, argv
[1], OFPFC_ADD
);
1330 print_packet_list(&packets
);
1333 /* "parse-flows FILENAME": reads the named file as a sequence of flows (like
1334 * add-flows) and prints each of the flows back to stdout. */
1336 do_parse_flows(int argc OVS_UNUSED
, char *argv
[])
1338 enum nx_flow_format flow_format
;
1339 struct list packets
;
1342 file
= fopen(argv
[1], "r");
1344 ovs_fatal(errno
, "%s: open", argv
[2]);
1347 flow_format
= NXFF_OPENFLOW10
;
1348 if (preferred_flow_format
> 0) {
1349 flow_format
= preferred_flow_format
;
1352 list_init(&packets
);
1353 while (parse_ofp_flow_mod_file(&packets
, &flow_format
, file
, OFPFC_ADD
)) {
1354 print_packet_list(&packets
);
1359 /* "parse-nx-match": reads a series of nx_match specifications as strings from
1360 * stdin, does some internal fussing with them, and then prints them back as
1361 * strings on stdout. */
1363 do_parse_nx_match(int argc OVS_UNUSED
, char *argv
[] OVS_UNUSED
)
1368 while (!ds_get_line(&in
, stdin
)) {
1369 struct ofpbuf nx_match
;
1370 struct cls_rule rule
;
1375 /* Delete comments, skip blank lines. */
1381 if (strchr(s
, '#')) {
1382 *strchr(s
, '#') = '\0';
1384 if (s
[strspn(s
, " ")] == '\0') {
1389 /* Convert string to nx_match. */
1390 ofpbuf_init(&nx_match
, 0);
1391 match_len
= nx_match_from_string(ds_cstr(&in
), &nx_match
);
1393 /* Convert nx_match to cls_rule. */
1394 error
= nx_pull_match(&nx_match
, match_len
, 0, &rule
);
1398 /* Convert cls_rule back to nx_match. */
1399 ofpbuf_uninit(&nx_match
);
1400 ofpbuf_init(&nx_match
, 0);
1401 match_len
= nx_put_match(&nx_match
, &rule
);
1403 /* Convert nx_match to string. */
1404 out
= nx_match_to_string(nx_match
.data
, match_len
);
1408 printf("nx_pull_match() returned error %x\n", error
);
1411 ofpbuf_uninit(&nx_match
);
1416 /* "ofp-print HEXSTRING [VERBOSITY]": Converts the hex digits in HEXSTRING into
1417 * binary data, interpreting them as an OpenFlow message, and prints the
1418 * OpenFlow message on stdout, at VERBOSITY (level 2 by default). */
1420 do_ofp_print(int argc
, char *argv
[])
1422 struct ofpbuf packet
;
1424 ofpbuf_init(&packet
, strlen(argv
[1]) / 2);
1425 if (ofpbuf_put_hex(&packet
, argv
[1], NULL
)[0] != '\0') {
1426 ovs_fatal(0, "trailing garbage following hex bytes");
1428 ofp_print(stdout
, packet
.data
, packet
.size
, argc
> 2 ? atoi(argv
[2]) : 2);
1429 ofpbuf_uninit(&packet
);
1432 static const struct command all_commands
[] = {
1433 { "show", 1, 1, do_show
},
1434 { "monitor", 1, 2, do_monitor
},
1435 { "snoop", 1, 1, do_snoop
},
1436 { "dump-desc", 1, 1, do_dump_desc
},
1437 { "dump-tables", 1, 1, do_dump_tables
},
1438 { "dump-flows", 1, 2, do_dump_flows
},
1439 { "dump-aggregate", 1, 2, do_dump_aggregate
},
1440 { "queue-stats", 1, 3, do_queue_stats
},
1441 { "add-flow", 2, 2, do_add_flow
},
1442 { "add-flows", 2, 2, do_add_flows
},
1443 { "mod-flows", 2, 2, do_mod_flows
},
1444 { "del-flows", 1, 2, do_del_flows
},
1445 { "replace-flows", 2, 2, do_replace_flows
},
1446 { "diff-flows", 2, 2, do_diff_flows
},
1447 { "dump-ports", 1, 2, do_dump_ports
},
1448 { "mod-port", 3, 3, do_mod_port
},
1449 { "probe", 1, 1, do_probe
},
1450 { "ping", 1, 2, do_ping
},
1451 { "benchmark", 3, 3, do_benchmark
},
1452 { "help", 0, INT_MAX
, do_help
},
1454 /* Undocumented commands for testing. */
1455 { "parse-flow", 1, 1, do_parse_flow
},
1456 { "parse-flows", 1, 1, do_parse_flows
},
1457 { "parse-nx-match", 0, 0, do_parse_nx_match
},
1458 { "ofp-print", 1, 2, do_ofp_print
},
1460 { NULL
, 0, 0, NULL
},