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, "drop_spoofed_arp")) {
414 struct nx_action_header *nah;
415 nah = put_action(b, sizeof *nah, OFPAT_VENDOR);
416 nah->vendor = htonl(NX_VENDOR_ID);
417 nah->subtype = htons(NXAST_DROP_SPOOFED_ARP);
418 } else if (!strcasecmp(act, "set_queue")) {
419 struct nx_action_set_queue *nasq;
420 nasq = put_action(b, sizeof *nasq, OFPAT_VENDOR);
421 nasq->vendor = htonl(NX_VENDOR_ID);
422 nasq->subtype = htons(NXAST_SET_QUEUE);
423 nasq->queue_id = htonl(str_to_u32(arg));
424 } else if (!strcasecmp(act, "pop_queue")) {
425 struct nx_action_header *nah;
426 nah = put_action(b, sizeof *nah, OFPAT_VENDOR);
427 nah->vendor = htonl(NX_VENDOR_ID);
428 nah->subtype = htons(NXAST_POP_QUEUE);
429 } else if (!strcasecmp(act, "note")) {
430 size_t start_ofs = b->size;
431 struct nx_action_note *nan;
435 nan = put_action(b, sizeof *nan, OFPAT_VENDOR);
436 nan->vendor = htonl(NX_VENDOR_ID);
437 nan->subtype = htons(NXAST_NOTE);
439 b->size -= sizeof nan->note;
440 while (*arg != '\0') {
451 byte = hexits_value(arg, 2, &ok);
453 ovs_fatal(0, "bad hex digit in `note' argument");
455 ofpbuf_put(b, &byte, 1);
460 len = b->size - start_ofs;
461 remainder = len % OFP_ACTION_ALIGN;
463 ofpbuf_put_zeros(b, OFP_ACTION_ALIGN - remainder);
465 nan->len = htons(b->size - start_ofs);
466 } else if (!strcasecmp(act, "move")) {
467 struct nx_action_reg_move *move;
468 move = ofpbuf_put_uninit(b, sizeof *move);
469 nxm_parse_reg_move(move, arg);
470 } else if (!strcasecmp(act, "load")) {
471 struct nx_action_reg_load *load;
472 load = ofpbuf_put_uninit(b, sizeof *load);
473 nxm_parse_reg_load(load, arg);
474 } else if (!strcasecmp(act, "multipath")) {
475 struct nx_action_multipath *nam;
476 nam = ofpbuf_put_uninit(b, sizeof *nam);
477 multipath_parse(nam, arg);
478 } else if (!strcasecmp(act, "autopath")) {
479 struct nx_action_autopath *naa;
480 naa = ofpbuf_put_uninit(b, sizeof *naa);
481 autopath_parse(naa, arg);
482 } else if (!strcasecmp(act, "output")) {
483 put_output_action(b, str_to_u32(arg));
484 } else if (!strcasecmp(act, "enqueue")) {
486 char *port_s = strtok_r(arg, ":q", &sp);
487 char *queue = strtok_r(NULL, "", &sp);
488 if (port_s == NULL || queue == NULL) {
489 ovs_fatal(0, "\"enqueue\" syntax is \"enqueue:PORT:QUEUE\"");
491 put_enqueue_action(b, str_to_u32(port_s), str_to_u32(queue));
492 } else if (!strcasecmp(act, "drop")) {
493 /* A drop action in OpenFlow occurs by just not setting
497 ovs_fatal(0, "Drop actions must not be preceded by other "
500 } else if (!strcasecmp(act, "CONTROLLER")) {
501 struct ofp_action_output *oao;
502 oao = put_output_action(b, OFPP_CONTROLLER);
504 /* Unless a numeric argument is specified, we send the whole
505 * packet to the controller. */
506 if (arg[0] && (strspn(arg, "0123456789") == strlen(arg))) {
507 oao->max_len = htons(str_to_u32(arg));
509 oao->max_len = htons(UINT16_MAX);
511 } else if (parse_port_name(act, &port)) {
512 put_output_action(b, port);
513 } else if (strspn(act, "0123456789") == strlen(act)) {
514 put_output_action(b, str_to_u32(act));
516 ovs_fatal(0, "Unknown action: %s", act);
529 parse_protocol(const char *name, const struct protocol **p_out)
531 static const struct protocol protocols[] = {
532 { "ip", ETH_TYPE_IP, 0 },
533 { "arp", ETH_TYPE_ARP, 0 },
534 { "icmp", ETH_TYPE_IP, IPPROTO_ICMP },
535 { "tcp", ETH_TYPE_IP, IPPROTO_TCP },
536 { "udp", ETH_TYPE_IP, IPPROTO_UDP },
537 { "ipv6", ETH_TYPE_IPV6, 0 },
538 { "ip6", ETH_TYPE_IPV6, 0 },
539 { "icmp6", ETH_TYPE_IPV6, IPPROTO_ICMPV6 },
540 { "tcp6", ETH_TYPE_IPV6, IPPROTO_TCP },
541 { "udp6", ETH_TYPE_IPV6, IPPROTO_UDP },
543 const struct protocol *p;
545 for (p = protocols; p < &protocols[ARRAY_SIZE(protocols)]; p++) {
546 if (!strcmp(p->name, name)) {
556 FIELD(F_TUN_ID, "tun_id", 0) \
557 FIELD(F_IN_PORT, "in_port", FWW_IN_PORT) \
558 FIELD(F_DL_VLAN, "dl_vlan", 0) \
559 FIELD(F_DL_VLAN_PCP, "dl_vlan_pcp", 0) \
560 FIELD(F_DL_SRC, "dl_src", FWW_DL_SRC) \
561 FIELD(F_DL_DST, "dl_dst", FWW_DL_DST | FWW_ETH_MCAST) \
562 FIELD(F_DL_TYPE, "dl_type", FWW_DL_TYPE) \
563 FIELD(F_NW_SRC, "nw_src", 0) \
564 FIELD(F_NW_DST, "nw_dst", 0) \
565 FIELD(F_NW_PROTO, "nw_proto", FWW_NW_PROTO) \
566 FIELD(F_NW_TOS, "nw_tos", FWW_NW_TOS) \
567 FIELD(F_TP_SRC, "tp_src", FWW_TP_SRC) \
568 FIELD(F_TP_DST, "tp_dst", FWW_TP_DST) \
569 FIELD(F_ICMP_TYPE, "icmp_type", FWW_TP_SRC) \
570 FIELD(F_ICMP_CODE, "icmp_code", FWW_TP_DST) \
571 FIELD(F_ARP_SHA, "arp_sha", FWW_ARP_SHA) \
572 FIELD(F_ARP_THA, "arp_tha", FWW_ARP_THA) \
573 FIELD(F_IPV6_SRC, "ipv6_src", 0) \
574 FIELD(F_IPV6_DST, "ipv6_dst", 0) \
575 FIELD(F_ND_TARGET, "nd_target", FWW_ND_TARGET) \
576 FIELD(F_ND_SLL, "nd_sll", FWW_ARP_SHA) \
577 FIELD(F_ND_TLL, "nd_tll", FWW_ARP_THA)
580 #define FIELD(ENUM, NAME, WILDCARD) ENUM,
587 enum field_index index;
589 flow_wildcards_t wildcard; /* FWW_* bit. */
593 parse_field_name(const char *name, const struct field **f_out)
595 static const struct field fields[N_FIELDS] = {
596 #define FIELD(ENUM, NAME, WILDCARD) { ENUM, NAME, WILDCARD },
600 const struct field *f;
602 for (f = fields; f < &fields[ARRAY_SIZE(fields)]; f++) {
603 if (!strcmp(f->name, name)) {
613 parse_field_value(struct cls_rule *rule, enum field_index index,
616 uint8_t mac[ETH_ADDR_LEN], mac_mask[ETH_ADDR_LEN];
617 ovs_be64 tun_id, tun_mask;
619 struct in6_addr ipv6, ipv6_mask;
624 str_to_tun_id(value, &tun_id, &tun_mask);
625 cls_rule_set_tun_id_masked(rule, tun_id, tun_mask);
629 if (!parse_port_name(value, &port_no)) {
630 port_no = atoi(value);
632 cls_rule_set_in_port(rule, port_no);
636 cls_rule_set_dl_vlan(rule, htons(str_to_u32(value)));
640 cls_rule_set_dl_vlan_pcp(rule, str_to_u32(value));
644 str_to_mac(value, mac);
645 cls_rule_set_dl_src(rule, mac);
649 str_to_eth_dst(value, mac, mac_mask);
650 cls_rule_set_dl_dst_masked(rule, mac, mac_mask);
654 cls_rule_set_dl_type(rule, htons(str_to_u32(value)));
658 str_to_ip(value, &ip, &mask);
659 cls_rule_set_nw_src_masked(rule, ip, mask);
663 str_to_ip(value, &ip, &mask);
664 cls_rule_set_nw_dst_masked(rule, ip, mask);
668 cls_rule_set_nw_proto(rule, str_to_u32(value));
672 cls_rule_set_nw_tos(rule, str_to_u32(value));
676 cls_rule_set_tp_src(rule, htons(str_to_u32(value)));
680 cls_rule_set_tp_dst(rule, htons(str_to_u32(value)));
684 cls_rule_set_icmp_type(rule, str_to_u32(value));
688 cls_rule_set_icmp_code(rule, str_to_u32(value));
692 str_to_mac(value, mac);
693 cls_rule_set_arp_sha(rule, mac);
697 str_to_mac(value, mac);
698 cls_rule_set_arp_tha(rule, mac);
702 str_to_ipv6(value, &ipv6, &ipv6_mask);
703 cls_rule_set_ipv6_src_masked(rule, &ipv6, &ipv6_mask);
707 str_to_ipv6(value, &ipv6, &ipv6_mask);
708 cls_rule_set_ipv6_dst_masked(rule, &ipv6, &ipv6_mask);
712 str_to_ipv6(value, &ipv6, NULL);
713 cls_rule_set_nd_target(rule, ipv6);
717 str_to_mac(value, mac);
718 cls_rule_set_arp_sha(rule, mac);
722 str_to_mac(value, mac);
723 cls_rule_set_arp_tha(rule, mac);
732 parse_reg_value(struct cls_rule *rule, int reg_idx, const char *value)
734 uint32_t reg_value, reg_mask;
736 if (!strcmp(value, "ANY") || !strcmp(value, "*")) {
737 cls_rule_set_reg_masked(rule, reg_idx, 0, 0);
738 } else if (sscanf(value, "%"SCNi32"/%"SCNi32,
739 ®_value, ®_mask) == 2) {
740 cls_rule_set_reg_masked(rule, reg_idx, reg_value, reg_mask);
741 } else if (sscanf(value, "%"SCNi32, ®_value)) {
742 cls_rule_set_reg(rule, reg_idx, reg_value);
744 ovs_fatal(0, "register fields must take the form <value> "
745 "or <value>/<mask>");
749 /* Convert 'string' (as described in the Flow Syntax section of the ovs-ofctl
750 * man page) into 'pf'. If 'actions' is specified, an action must be in
751 * 'string' and may be expanded or reallocated. */
753 parse_ofp_str(struct flow_mod *fm, struct ofpbuf *actions, char *string)
755 char *save_ptr = NULL;
758 cls_rule_init_catchall(&fm->cr, OFP_DEFAULT_PRIORITY);
759 fm->cookie = htonll(0);
761 fm->command = UINT16_MAX;
762 fm->idle_timeout = OFP_FLOW_PERMANENT;
763 fm->hard_timeout = OFP_FLOW_PERMANENT;
764 fm->buffer_id = UINT32_MAX;
765 fm->out_port = OFPP_NONE;
768 char *act_str = strstr(string, "action");
770 ovs_fatal(0, "must specify an action");
774 act_str = strchr(act_str + 1, '=');
776 ovs_fatal(0, "must specify an action");
781 str_to_action(act_str, actions);
782 fm->actions = actions->data;
783 fm->n_actions = actions->size / sizeof(union ofp_action);
788 for (name = strtok_r(string, "=, \t\r\n", &save_ptr); name;
789 name = strtok_r(NULL, "=, \t\r\n", &save_ptr)) {
790 const struct protocol *p;
792 if (parse_protocol(name, &p)) {
793 cls_rule_set_dl_type(&fm->cr, htons(p->dl_type));
795 cls_rule_set_nw_proto(&fm->cr, p->nw_proto);
798 const struct field *f;
801 value = strtok_r(NULL, ", \t\r\n", &save_ptr);
803 ovs_fatal(0, "field %s missing value", name);
806 if (!strcmp(name, "table")) {
807 fm->table_id = atoi(value);
808 } else if (!strcmp(name, "out_port")) {
809 fm->out_port = atoi(value);
810 } else if (!strcmp(name, "priority")) {
811 fm->cr.priority = atoi(value);
812 } else if (!strcmp(name, "idle_timeout")) {
813 fm->idle_timeout = atoi(value);
814 } else if (!strcmp(name, "hard_timeout")) {
815 fm->hard_timeout = atoi(value);
816 } else if (!strcmp(name, "cookie")) {
817 fm->cookie = htonll(str_to_u64(value));
818 } else if (parse_field_name(name, &f)) {
819 if (!strcmp(value, "*") || !strcmp(value, "ANY")) {
821 fm->cr.wc.wildcards |= f->wildcard;
822 cls_rule_zero_wildcarded_fields(&fm->cr);
823 } else if (f->index == F_NW_SRC) {
824 cls_rule_set_nw_src_masked(&fm->cr, 0, 0);
825 } else if (f->index == F_NW_DST) {
826 cls_rule_set_nw_dst_masked(&fm->cr, 0, 0);
827 } else if (f->index == F_IPV6_SRC) {
828 cls_rule_set_ipv6_src_masked(&fm->cr,
829 &in6addr_any, &in6addr_any);
830 } else if (f->index == F_IPV6_DST) {
831 cls_rule_set_ipv6_dst_masked(&fm->cr,
832 &in6addr_any, &in6addr_any);
833 } else if (f->index == F_DL_VLAN) {
834 cls_rule_set_any_vid(&fm->cr);
835 } else if (f->index == F_DL_VLAN_PCP) {
836 cls_rule_set_any_pcp(&fm->cr);
841 parse_field_value(&fm->cr, f->index, value);
843 } else if (!strncmp(name, "reg", 3)
844 && isdigit((unsigned char) name[3])) {
845 unsigned int reg_idx = atoi(name + 3);
846 if (reg_idx >= FLOW_N_REGS) {
847 ovs_fatal(0, "only %d registers supported", FLOW_N_REGS);
849 parse_reg_value(&fm->cr, reg_idx, value);
851 ovs_fatal(0, "unknown keyword %s", name);
857 /* Parses 'string' as an OFPT_FLOW_MOD or NXT_FLOW_MOD with command 'command'
858 * (one of OFPFC_*) and appends the parsed OpenFlow message to 'packets'.
859 * '*cur_format' should initially contain the flow format currently configured
860 * on the connection; this function will add a message to change the flow
861 * format and update '*cur_format', if this is necessary to add the parsed
864 parse_ofp_flow_mod_str(struct list *packets, enum nx_flow_format *cur_format,
865 bool *flow_mod_table_id, char *string, uint16_t command)
867 bool is_del = command == OFPFC_DELETE || command == OFPFC_DELETE_STRICT;
868 enum nx_flow_format min_format, next_format;
869 struct cls_rule rule_copy;
870 struct ofpbuf actions;
874 ofpbuf_init(&actions, 64);
875 parse_ofp_str(&fm, is_del ? NULL : &actions, string);
876 fm.command = command;
878 min_format = ofputil_min_flow_format(&fm.cr);
879 next_format = MAX(*cur_format, min_format);
880 if (next_format != *cur_format) {
881 struct ofpbuf *sff = ofputil_make_set_flow_format(next_format);
882 list_push_back(packets, &sff->list_node);
883 *cur_format = next_format;
886 /* Normalize a copy of the rule. This ensures that non-normalized flows
887 * get logged but doesn't affect what gets sent to the switch, so that the
888 * switch can do whatever it likes with the flow. */
890 ofputil_normalize_rule(&rule_copy, next_format);
892 if (fm.table_id != 0xff && !*flow_mod_table_id) {
893 struct ofpbuf *sff = ofputil_make_flow_mod_table_id(true);
894 list_push_back(packets, &sff->list_node);
895 *flow_mod_table_id = true;
898 ofm = ofputil_encode_flow_mod(&fm, *cur_format, *flow_mod_table_id);
899 list_push_back(packets, &ofm->list_node);
901 ofpbuf_uninit(&actions);
904 /* Similar to parse_ofp_flow_mod_str(), except that the string is read from
905 * 'stream' and the command is always OFPFC_ADD. Returns false if end-of-file
906 * is reached before reading a flow, otherwise true. */
908 parse_ofp_flow_mod_file(struct list *packets,
909 enum nx_flow_format *cur, bool *flow_mod_table_id,
910 FILE *stream, uint16_t command)
916 ok = ds_get_preprocessed_line(&s, stream) == 0;
918 parse_ofp_flow_mod_str(packets, cur, flow_mod_table_id,
919 ds_cstr(&s), command);
927 parse_ofp_flow_stats_request_str(struct flow_stats_request *fsr,
928 bool aggregate, char *string)
932 parse_ofp_str(&fm, NULL, string);
933 fsr->aggregate = aggregate;
935 fsr->out_port = fm.out_port;
936 fsr->table_id = fm.table_id;