2 * Copyright (c) 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.
19 #include "ofp-parse.h"
26 #include "byte-order.h"
27 #include "dynamic-string.h"
29 #include "multipath.h"
33 #include "openflow/openflow.h"
35 #include "socket-util.h"
39 VLOG_DEFINE_THIS_MODULE(ofp_parse);
42 str_to_u32(const char *str)
48 ovs_fatal(0, "missing required numeric argument");
52 value = strtoul(str, &tail, 0);
53 if (errno == EINVAL || errno == ERANGE || *tail) {
54 ovs_fatal(0, "invalid numeric format %s", str);
60 str_to_u64(const char *str)
66 ovs_fatal(0, "missing required numeric argument");
70 value = strtoull(str, &tail, 0);
71 if (errno == EINVAL || errno == ERANGE || *tail) {
72 ovs_fatal(0, "invalid numeric format %s", str);
78 str_to_mac(const char *str, uint8_t mac[6])
80 if (sscanf(str, ETH_ADDR_SCAN_FMT, ETH_ADDR_SCAN_ARGS(mac))
81 != ETH_ADDR_SCAN_COUNT) {
82 ovs_fatal(0, "invalid mac address %s", str);
87 str_to_eth_dst(const char *str,
88 uint8_t mac[ETH_ADDR_LEN], uint8_t mask[ETH_ADDR_LEN])
90 if (sscanf(str, ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT,
91 ETH_ADDR_SCAN_ARGS(mac), ETH_ADDR_SCAN_ARGS(mask))
92 == ETH_ADDR_SCAN_COUNT * 2) {
93 if (!flow_wildcards_is_dl_dst_mask_valid(mask)) {
94 ovs_fatal(0, "%s: invalid Ethernet destination mask (only "
95 "00:00:00:00:00:00, 01:00:00:00:00:00, "
96 "fe:ff:ff:ff:ff:ff, and ff:ff:ff:ff:ff:ff are allowed)",
99 } else if (sscanf(str, ETH_ADDR_SCAN_FMT, ETH_ADDR_SCAN_ARGS(mac))
100 == ETH_ADDR_SCAN_COUNT) {
101 memset(mask, 0xff, ETH_ADDR_LEN);
103 ovs_fatal(0, "invalid mac address %s", str);
108 str_to_ip(const char *str_, ovs_be32 *ip, ovs_be32 *maskp)
110 char *str = xstrdup(str_);
111 char *save_ptr = NULL;
112 const char *name, *netmask;
113 struct in_addr in_addr;
117 name = strtok_r(str, "/", &save_ptr);
118 retval = name ? lookup_ip(name, &in_addr) : EINVAL;
120 ovs_fatal(0, "%s: could not convert to IP address", str);
122 *ip = in_addr.s_addr;
124 netmask = strtok_r(NULL, "/", &save_ptr);
127 if (sscanf(netmask, "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8,
128 &o[0], &o[1], &o[2], &o[3]) == 4) {
129 mask = htonl((o[0] << 24) | (o[1] << 16) | (o[2] << 8) | o[3]);
131 int prefix = atoi(netmask);
132 if (prefix <= 0 || prefix > 32) {
133 ovs_fatal(0, "%s: network prefix bits not between 1 and 32",
135 } else if (prefix == 32) {
136 mask = htonl(UINT32_MAX);
138 mask = htonl(((1u << prefix) - 1) << (32 - prefix));
142 mask = htonl(UINT32_MAX);
149 if (mask != htonl(UINT32_MAX)) {
150 ovs_fatal(0, "%s: netmask not allowed here", str_);
158 str_to_tun_id(const char *str, ovs_be64 *tun_idp, ovs_be64 *maskp)
160 uint64_t tun_id, mask;
164 tun_id = strtoull(str, &tail, 0);
165 if (errno || (*tail != '\0' && *tail != '/')) {
170 mask = strtoull(tail + 1, &tail, 0);
171 if (errno || *tail != '\0') {
178 *tun_idp = htonll(tun_id);
179 *maskp = htonll(mask);
183 ovs_fatal(0, "%s: bad syntax for tunnel id", str);
187 str_to_ipv6(const char *str_, struct in6_addr *addrp, struct in6_addr *maskp)
189 char *str = xstrdup(str_);
190 char *save_ptr = NULL;
191 const char *name, *netmask;
192 struct in6_addr addr, mask;
195 name = strtok_r(str, "/", &save_ptr);
196 retval = name ? lookup_ipv6(name, &addr) : EINVAL;
198 ovs_fatal(0, "%s: could not convert to IPv6 address", str);
201 netmask = strtok_r(NULL, "/", &save_ptr);
203 int prefix = atoi(netmask);
204 if (prefix <= 0 || prefix > 128) {
205 ovs_fatal(0, "%s: network prefix bits not between 1 and 128",
208 mask = ipv6_create_mask(prefix);
211 mask = in6addr_exact;
213 *addrp = ipv6_addr_bitand(&addr, &mask);
218 if (!ipv6_mask_is_exact(&mask)) {
219 ovs_fatal(0, "%s: netmask not allowed here", str_);
227 put_action(struct ofpbuf *b, size_t size, uint16_t type)
229 struct ofp_action_header *ah = ofpbuf_put_zeros(b, size);
230 ah->type = htons(type);
231 ah->len = htons(size);
235 static struct ofp_action_output *
236 put_output_action(struct ofpbuf *b, uint16_t port)
238 struct ofp_action_output *oao = put_action(b, sizeof *oao, OFPAT_OUTPUT);
239 oao->port = htons(port);
244 put_enqueue_action(struct ofpbuf *b, uint16_t port, uint32_t queue)
246 struct ofp_action_enqueue *oae = put_action(b, sizeof *oae, OFPAT_ENQUEUE);
247 oae->port = htons(port);
248 oae->queue_id = htonl(queue);
252 put_dl_addr_action(struct ofpbuf *b, uint16_t type, const char *addr)
254 struct ofp_action_dl_addr *oada = put_action(b, sizeof *oada, type);
255 str_to_mac(addr, oada->dl_addr);
260 parse_port_name(const char *name, uint16_t *port)
266 static const struct pair pairs[] = {
267 #define DEF_PAIR(NAME) {#NAME, OFPP_##NAME}
273 DEF_PAIR(CONTROLLER),
278 static const int n_pairs = ARRAY_SIZE(pairs);
281 for (i = 0; i < n_pairs; i++) {
282 if (!strcasecmp(name, pairs[i].name)) {
283 *port = pairs[i].value;
291 str_to_action(char *str, struct ofpbuf *b)
300 char empty_string[] = "";
305 pos += strspn(pos, ", \t\r\n");
311 ovs_fatal(0, "Drop actions must not be followed by other actions");
315 actlen = strcspn(pos, ":(, \t\r\n");
316 if (act[actlen] == ':') {
317 /* The argument can be separated by a colon. */
320 arg = act + actlen + 1;
321 arglen = strcspn(arg, ", \t\r\n");
322 pos = arg + arglen + (arg[arglen] != '\0');
324 } else if (act[actlen] == '(') {
325 /* The argument can be surrounded by balanced parentheses. The
326 * outermost set of parentheses is removed. */
330 arg = act + actlen + 1;
331 for (arglen = 0; level > 0; arglen++) {
332 switch (arg[arglen]) {
334 ovs_fatal(0, "unbalanced parentheses in argument to %s "
346 arg[arglen - 1] = '\0';
349 /* There might be no argument at all. */
351 pos = act + actlen + (act[actlen] != '\0');
355 if (!strcasecmp(act, "mod_vlan_vid")) {
356 struct ofp_action_vlan_vid *va;
357 va = put_action(b, sizeof *va, OFPAT_SET_VLAN_VID);
358 va->vlan_vid = htons(str_to_u32(arg));
359 } else if (!strcasecmp(act, "mod_vlan_pcp")) {
360 struct ofp_action_vlan_pcp *va;
361 va = put_action(b, sizeof *va, OFPAT_SET_VLAN_PCP);
362 va->vlan_pcp = str_to_u32(arg);
363 } else if (!strcasecmp(act, "strip_vlan")) {
364 struct ofp_action_header *ah;
365 ah = put_action(b, sizeof *ah, OFPAT_STRIP_VLAN);
366 ah->type = htons(OFPAT_STRIP_VLAN);
367 } else if (!strcasecmp(act, "mod_dl_src")) {
368 put_dl_addr_action(b, OFPAT_SET_DL_SRC, arg);
369 } else if (!strcasecmp(act, "mod_dl_dst")) {
370 put_dl_addr_action(b, OFPAT_SET_DL_DST, arg);
371 } else if (!strcasecmp(act, "mod_nw_src")) {
372 struct ofp_action_nw_addr *na;
373 na = put_action(b, sizeof *na, OFPAT_SET_NW_SRC);
374 str_to_ip(arg, &na->nw_addr, NULL);
375 } else if (!strcasecmp(act, "mod_nw_dst")) {
376 struct ofp_action_nw_addr *na;
377 na = put_action(b, sizeof *na, OFPAT_SET_NW_DST);
378 str_to_ip(arg, &na->nw_addr, NULL);
379 } else if (!strcasecmp(act, "mod_tp_src")) {
380 struct ofp_action_tp_port *ta;
381 ta = put_action(b, sizeof *ta, OFPAT_SET_TP_SRC);
382 ta->tp_port = htons(str_to_u32(arg));
383 } else if (!strcasecmp(act, "mod_tp_dst")) {
384 struct ofp_action_tp_port *ta;
385 ta = put_action(b, sizeof *ta, OFPAT_SET_TP_DST);
386 ta->tp_port = htons(str_to_u32(arg));
387 } else if (!strcasecmp(act, "mod_nw_tos")) {
388 struct ofp_action_nw_tos *nt;
389 nt = put_action(b, sizeof *nt, OFPAT_SET_NW_TOS);
390 nt->nw_tos = str_to_u32(arg);
391 } else if (!strcasecmp(act, "resubmit")) {
392 struct nx_action_resubmit *nar;
393 nar = put_action(b, sizeof *nar, OFPAT_VENDOR);
394 nar->vendor = htonl(NX_VENDOR_ID);
395 nar->subtype = htons(NXAST_RESUBMIT);
396 nar->in_port = htons(str_to_u32(arg));
397 } else if (!strcasecmp(act, "set_tunnel")
398 || !strcasecmp(act, "set_tunnel64")) {
399 uint64_t tun_id = str_to_u64(arg);
400 if (!strcasecmp(act, "set_tunnel64") || tun_id > UINT32_MAX) {
401 struct nx_action_set_tunnel64 *nast64;
402 nast64 = put_action(b, sizeof *nast64, OFPAT_VENDOR);
403 nast64->vendor = htonl(NX_VENDOR_ID);
404 nast64->subtype = htons(NXAST_SET_TUNNEL64);
405 nast64->tun_id = htonll(tun_id);
407 struct nx_action_set_tunnel *nast;
408 nast = put_action(b, sizeof *nast, OFPAT_VENDOR);
409 nast->vendor = htonl(NX_VENDOR_ID);
410 nast->subtype = htons(NXAST_SET_TUNNEL);
411 nast->tun_id = htonl(tun_id);
413 } else if (!strcasecmp(act, "set_queue")) {
414 struct nx_action_set_queue *nasq;
415 nasq = put_action(b, sizeof *nasq, OFPAT_VENDOR);
416 nasq->vendor = htonl(NX_VENDOR_ID);
417 nasq->subtype = htons(NXAST_SET_QUEUE);
418 nasq->queue_id = htonl(str_to_u32(arg));
419 } else if (!strcasecmp(act, "pop_queue")) {
420 struct nx_action_header *nah;
421 nah = put_action(b, sizeof *nah, OFPAT_VENDOR);
422 nah->vendor = htonl(NX_VENDOR_ID);
423 nah->subtype = htons(NXAST_POP_QUEUE);
424 } else if (!strcasecmp(act, "note")) {
425 size_t start_ofs = b->size;
426 struct nx_action_note *nan;
430 nan = put_action(b, sizeof *nan, OFPAT_VENDOR);
431 nan->vendor = htonl(NX_VENDOR_ID);
432 nan->subtype = htons(NXAST_NOTE);
434 b->size -= sizeof nan->note;
435 while (*arg != '\0') {
446 byte = hexits_value(arg, 2, &ok);
448 ovs_fatal(0, "bad hex digit in `note' argument");
450 ofpbuf_put(b, &byte, 1);
455 len = b->size - start_ofs;
456 remainder = len % OFP_ACTION_ALIGN;
458 ofpbuf_put_zeros(b, OFP_ACTION_ALIGN - remainder);
460 nan->len = htons(b->size - start_ofs);
461 } else if (!strcasecmp(act, "move")) {
462 struct nx_action_reg_move *move;
463 move = ofpbuf_put_uninit(b, sizeof *move);
464 nxm_parse_reg_move(move, arg);
465 } else if (!strcasecmp(act, "load")) {
466 struct nx_action_reg_load *load;
467 load = ofpbuf_put_uninit(b, sizeof *load);
468 nxm_parse_reg_load(load, arg);
469 } else if (!strcasecmp(act, "multipath")) {
470 struct nx_action_multipath *nam;
471 nam = ofpbuf_put_uninit(b, sizeof *nam);
472 multipath_parse(nam, arg);
473 } else if (!strcasecmp(act, "autopath")) {
474 struct nx_action_autopath *naa;
475 naa = ofpbuf_put_uninit(b, sizeof *naa);
476 autopath_parse(naa, arg);
477 } else if (!strcasecmp(act, "output")) {
478 put_output_action(b, str_to_u32(arg));
479 } else if (!strcasecmp(act, "enqueue")) {
481 char *port_s = strtok_r(arg, ":q", &sp);
482 char *queue = strtok_r(NULL, "", &sp);
483 if (port_s == NULL || queue == NULL) {
484 ovs_fatal(0, "\"enqueue\" syntax is \"enqueue:PORT:QUEUE\"");
486 put_enqueue_action(b, str_to_u32(port_s), str_to_u32(queue));
487 } else if (!strcasecmp(act, "drop")) {
488 /* A drop action in OpenFlow occurs by just not setting
492 ovs_fatal(0, "Drop actions must not be preceded by other "
495 } else if (!strcasecmp(act, "CONTROLLER")) {
496 struct ofp_action_output *oao;
497 oao = put_output_action(b, OFPP_CONTROLLER);
499 /* Unless a numeric argument is specified, we send the whole
500 * packet to the controller. */
501 if (arg[0] && (strspn(arg, "0123456789") == strlen(arg))) {
502 oao->max_len = htons(str_to_u32(arg));
504 oao->max_len = htons(UINT16_MAX);
506 } else if (parse_port_name(act, &port)) {
507 put_output_action(b, port);
508 } else if (strspn(act, "0123456789") == strlen(act)) {
509 put_output_action(b, str_to_u32(act));
511 ovs_fatal(0, "Unknown action: %s", act);
524 parse_protocol(const char *name, const struct protocol **p_out)
526 static const struct protocol protocols[] = {
527 { "ip", ETH_TYPE_IP, 0 },
528 { "arp", ETH_TYPE_ARP, 0 },
529 { "icmp", ETH_TYPE_IP, IPPROTO_ICMP },
530 { "tcp", ETH_TYPE_IP, IPPROTO_TCP },
531 { "udp", ETH_TYPE_IP, IPPROTO_UDP },
532 { "ipv6", ETH_TYPE_IPV6, 0 },
533 { "ip6", ETH_TYPE_IPV6, 0 },
534 { "icmp6", ETH_TYPE_IPV6, IPPROTO_ICMPV6 },
535 { "tcp6", ETH_TYPE_IPV6, IPPROTO_TCP },
536 { "udp6", ETH_TYPE_IPV6, IPPROTO_UDP },
538 const struct protocol *p;
540 for (p = protocols; p < &protocols[ARRAY_SIZE(protocols)]; p++) {
541 if (!strcmp(p->name, name)) {
551 FIELD(F_TUN_ID, "tun_id", 0) \
552 FIELD(F_IN_PORT, "in_port", FWW_IN_PORT) \
553 FIELD(F_DL_VLAN, "dl_vlan", 0) \
554 FIELD(F_DL_VLAN_PCP, "dl_vlan_pcp", 0) \
555 FIELD(F_DL_SRC, "dl_src", FWW_DL_SRC) \
556 FIELD(F_DL_DST, "dl_dst", FWW_DL_DST | FWW_ETH_MCAST) \
557 FIELD(F_DL_TYPE, "dl_type", FWW_DL_TYPE) \
558 FIELD(F_NW_SRC, "nw_src", 0) \
559 FIELD(F_NW_DST, "nw_dst", 0) \
560 FIELD(F_NW_PROTO, "nw_proto", FWW_NW_PROTO) \
561 FIELD(F_NW_TOS, "nw_tos", FWW_NW_TOS) \
562 FIELD(F_TP_SRC, "tp_src", FWW_TP_SRC) \
563 FIELD(F_TP_DST, "tp_dst", FWW_TP_DST) \
564 FIELD(F_ICMP_TYPE, "icmp_type", FWW_TP_SRC) \
565 FIELD(F_ICMP_CODE, "icmp_code", FWW_TP_DST) \
566 FIELD(F_ARP_SHA, "arp_sha", FWW_ARP_SHA) \
567 FIELD(F_ARP_THA, "arp_tha", FWW_ARP_THA) \
568 FIELD(F_IPV6_SRC, "ipv6_src", 0) \
569 FIELD(F_IPV6_DST, "ipv6_dst", 0) \
570 FIELD(F_ND_TARGET, "nd_target", FWW_ND_TARGET) \
571 FIELD(F_ND_SLL, "nd_sll", FWW_ARP_SHA) \
572 FIELD(F_ND_TLL, "nd_tll", FWW_ARP_THA)
575 #define FIELD(ENUM, NAME, WILDCARD) ENUM,
582 enum field_index index;
584 flow_wildcards_t wildcard; /* FWW_* bit. */
588 parse_field_name(const char *name, const struct field **f_out)
590 static const struct field fields[N_FIELDS] = {
591 #define FIELD(ENUM, NAME, WILDCARD) { ENUM, NAME, WILDCARD },
595 const struct field *f;
597 for (f = fields; f < &fields[ARRAY_SIZE(fields)]; f++) {
598 if (!strcmp(f->name, name)) {
608 parse_field_value(struct cls_rule *rule, enum field_index index,
611 uint8_t mac[ETH_ADDR_LEN], mac_mask[ETH_ADDR_LEN];
612 ovs_be64 tun_id, tun_mask;
614 struct in6_addr ipv6, ipv6_mask;
619 str_to_tun_id(value, &tun_id, &tun_mask);
620 cls_rule_set_tun_id_masked(rule, tun_id, tun_mask);
624 if (!parse_port_name(value, &port_no)) {
625 port_no = atoi(value);
627 cls_rule_set_in_port(rule, port_no);
631 cls_rule_set_dl_vlan(rule, htons(str_to_u32(value)));
635 cls_rule_set_dl_vlan_pcp(rule, str_to_u32(value));
639 str_to_mac(value, mac);
640 cls_rule_set_dl_src(rule, mac);
644 str_to_eth_dst(value, mac, mac_mask);
645 cls_rule_set_dl_dst_masked(rule, mac, mac_mask);
649 cls_rule_set_dl_type(rule, htons(str_to_u32(value)));
653 str_to_ip(value, &ip, &mask);
654 cls_rule_set_nw_src_masked(rule, ip, mask);
658 str_to_ip(value, &ip, &mask);
659 cls_rule_set_nw_dst_masked(rule, ip, mask);
663 cls_rule_set_nw_proto(rule, str_to_u32(value));
667 cls_rule_set_nw_tos(rule, str_to_u32(value));
671 cls_rule_set_tp_src(rule, htons(str_to_u32(value)));
675 cls_rule_set_tp_dst(rule, htons(str_to_u32(value)));
679 cls_rule_set_icmp_type(rule, str_to_u32(value));
683 cls_rule_set_icmp_code(rule, str_to_u32(value));
687 str_to_mac(value, mac);
688 cls_rule_set_arp_sha(rule, mac);
692 str_to_mac(value, mac);
693 cls_rule_set_arp_tha(rule, mac);
697 str_to_ipv6(value, &ipv6, &ipv6_mask);
698 cls_rule_set_ipv6_src_masked(rule, &ipv6, &ipv6_mask);
702 str_to_ipv6(value, &ipv6, &ipv6_mask);
703 cls_rule_set_ipv6_dst_masked(rule, &ipv6, &ipv6_mask);
707 str_to_ipv6(value, &ipv6, NULL);
708 cls_rule_set_nd_target(rule, ipv6);
712 str_to_mac(value, mac);
713 cls_rule_set_arp_sha(rule, mac);
717 str_to_mac(value, mac);
718 cls_rule_set_arp_tha(rule, mac);
727 parse_reg_value(struct cls_rule *rule, int reg_idx, const char *value)
729 uint32_t reg_value, reg_mask;
731 if (!strcmp(value, "ANY") || !strcmp(value, "*")) {
732 cls_rule_set_reg_masked(rule, reg_idx, 0, 0);
733 } else if (sscanf(value, "%"SCNi32"/%"SCNi32,
734 ®_value, ®_mask) == 2) {
735 cls_rule_set_reg_masked(rule, reg_idx, reg_value, reg_mask);
736 } else if (sscanf(value, "%"SCNi32, ®_value)) {
737 cls_rule_set_reg(rule, reg_idx, reg_value);
739 ovs_fatal(0, "register fields must take the form <value> "
740 "or <value>/<mask>");
744 /* Convert 'string' (as described in the Flow Syntax section of the ovs-ofctl
745 * man page) into 'pf'. If 'actions' is specified, an action must be in
746 * 'string' and may be expanded or reallocated. */
748 parse_ofp_str(struct flow_mod *fm, struct ofpbuf *actions, char *string)
750 char *save_ptr = NULL;
753 cls_rule_init_catchall(&fm->cr, OFP_DEFAULT_PRIORITY);
754 fm->cookie = htonll(0);
756 fm->command = UINT16_MAX;
757 fm->idle_timeout = OFP_FLOW_PERMANENT;
758 fm->hard_timeout = OFP_FLOW_PERMANENT;
759 fm->buffer_id = UINT32_MAX;
760 fm->out_port = OFPP_NONE;
763 char *act_str = strstr(string, "action");
765 ovs_fatal(0, "must specify an action");
769 act_str = strchr(act_str + 1, '=');
771 ovs_fatal(0, "must specify an action");
776 str_to_action(act_str, actions);
777 fm->actions = actions->data;
778 fm->n_actions = actions->size / sizeof(union ofp_action);
783 for (name = strtok_r(string, "=, \t\r\n", &save_ptr); name;
784 name = strtok_r(NULL, "=, \t\r\n", &save_ptr)) {
785 const struct protocol *p;
787 if (parse_protocol(name, &p)) {
788 cls_rule_set_dl_type(&fm->cr, htons(p->dl_type));
790 cls_rule_set_nw_proto(&fm->cr, p->nw_proto);
793 const struct field *f;
796 value = strtok_r(NULL, ", \t\r\n", &save_ptr);
798 ovs_fatal(0, "field %s missing value", name);
801 if (!strcmp(name, "table")) {
802 fm->table_id = atoi(value);
803 } else if (!strcmp(name, "out_port")) {
804 fm->out_port = atoi(value);
805 } else if (!strcmp(name, "priority")) {
806 fm->cr.priority = atoi(value);
807 } else if (!strcmp(name, "idle_timeout")) {
808 fm->idle_timeout = atoi(value);
809 } else if (!strcmp(name, "hard_timeout")) {
810 fm->hard_timeout = atoi(value);
811 } else if (!strcmp(name, "cookie")) {
812 fm->cookie = htonll(str_to_u64(value));
813 } else if (parse_field_name(name, &f)) {
814 if (!strcmp(value, "*") || !strcmp(value, "ANY")) {
816 fm->cr.wc.wildcards |= f->wildcard;
817 cls_rule_zero_wildcarded_fields(&fm->cr);
818 } else if (f->index == F_NW_SRC) {
819 cls_rule_set_nw_src_masked(&fm->cr, 0, 0);
820 } else if (f->index == F_NW_DST) {
821 cls_rule_set_nw_dst_masked(&fm->cr, 0, 0);
822 } else if (f->index == F_IPV6_SRC) {
823 cls_rule_set_ipv6_src_masked(&fm->cr,
824 &in6addr_any, &in6addr_any);
825 } else if (f->index == F_IPV6_DST) {
826 cls_rule_set_ipv6_dst_masked(&fm->cr,
827 &in6addr_any, &in6addr_any);
828 } else if (f->index == F_DL_VLAN) {
829 cls_rule_set_any_vid(&fm->cr);
830 } else if (f->index == F_DL_VLAN_PCP) {
831 cls_rule_set_any_pcp(&fm->cr);
836 parse_field_value(&fm->cr, f->index, value);
838 } else if (!strncmp(name, "reg", 3)
839 && isdigit((unsigned char) name[3])) {
840 unsigned int reg_idx = atoi(name + 3);
841 if (reg_idx >= FLOW_N_REGS) {
842 ovs_fatal(0, "only %d registers supported", FLOW_N_REGS);
844 parse_reg_value(&fm->cr, reg_idx, value);
846 ovs_fatal(0, "unknown keyword %s", name);
852 /* Parses 'string' as an OFPT_FLOW_MOD or NXT_FLOW_MOD with command 'command'
853 * (one of OFPFC_*) and appends the parsed OpenFlow message to 'packets'.
854 * '*cur_format' should initially contain the flow format currently configured
855 * on the connection; this function will add a message to change the flow
856 * format and update '*cur_format', if this is necessary to add the parsed
859 parse_ofp_flow_mod_str(struct list *packets, enum nx_flow_format *cur_format,
860 bool *flow_mod_table_id, char *string, uint16_t command)
862 bool is_del = command == OFPFC_DELETE || command == OFPFC_DELETE_STRICT;
863 enum nx_flow_format min_format, next_format;
864 struct cls_rule rule_copy;
865 struct ofpbuf actions;
869 ofpbuf_init(&actions, 64);
870 parse_ofp_str(&fm, is_del ? NULL : &actions, string);
871 fm.command = command;
873 min_format = ofputil_min_flow_format(&fm.cr);
874 next_format = MAX(*cur_format, min_format);
875 if (next_format != *cur_format) {
876 struct ofpbuf *sff = ofputil_make_set_flow_format(next_format);
877 list_push_back(packets, &sff->list_node);
878 *cur_format = next_format;
881 /* Normalize a copy of the rule. This ensures that non-normalized flows
882 * get logged but doesn't affect what gets sent to the switch, so that the
883 * switch can do whatever it likes with the flow. */
885 ofputil_normalize_rule(&rule_copy, next_format);
887 if (fm.table_id != 0xff && !*flow_mod_table_id) {
888 struct ofpbuf *sff = ofputil_make_flow_mod_table_id(true);
889 list_push_back(packets, &sff->list_node);
890 *flow_mod_table_id = true;
893 ofm = ofputil_encode_flow_mod(&fm, *cur_format, *flow_mod_table_id);
894 list_push_back(packets, &ofm->list_node);
896 ofpbuf_uninit(&actions);
899 /* Similar to parse_ofp_flow_mod_str(), except that the string is read from
900 * 'stream' and the command is always OFPFC_ADD. Returns false if end-of-file
901 * is reached before reading a flow, otherwise true. */
903 parse_ofp_flow_mod_file(struct list *packets,
904 enum nx_flow_format *cur, bool *flow_mod_table_id,
905 FILE *stream, uint16_t command)
911 ok = ds_get_preprocessed_line(&s, stream) == 0;
913 parse_ofp_flow_mod_str(packets, cur, flow_mod_table_id,
914 ds_cstr(&s), command);
922 parse_ofp_flow_stats_request_str(struct flow_stats_request *fsr,
923 bool aggregate, char *string)
927 parse_ofp_str(&fm, NULL, string);
928 fsr->aggregate = aggregate;
930 fsr->out_port = fm.out_port;
931 fsr->table_id = fm.table_id;