2 * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
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.
20 #include "byte-order.h"
21 #include "dynamic-string.h"
25 /* Converts the flow in 'flow' into a match in 'match', with the given
28 match_init(struct match *match,
29 const struct flow *flow, const struct flow_wildcards *wc)
33 match_zero_wildcarded_fields(match);
36 /* Converts a flow into a match. It sets the wildcard masks based on
37 * the packet contents. It will not set the mask for fields that do not
38 * make sense for the packet type. */
40 match_wc_init(struct match *match, const struct flow *flow)
44 flow_wildcards_init_for_packet(&match->wc, flow);
45 WC_MASK_FIELD(&match->wc, regs);
46 WC_MASK_FIELD(&match->wc, metadata);
49 /* Initializes 'match' as a "catch-all" match that matches every packet. */
51 match_init_catchall(struct match *match)
53 memset(&match->flow, 0, sizeof match->flow);
54 flow_wildcards_init_catchall(&match->wc);
57 /* For each bit or field wildcarded in 'match', sets the corresponding bit or
58 * field in 'flow' to all-0-bits. It is important to maintain this invariant
59 * in a match that might be inserted into a classifier.
61 * It is never necessary to call this function directly for a match that is
62 * initialized or modified only by match_*() functions. It is useful to
63 * restore the invariant in a match whose 'wc' member is modified by hand.
66 match_zero_wildcarded_fields(struct match *match)
68 flow_zero_wildcards(&match->flow, &match->wc);
72 match_set_dp_hash(struct match *match, uint32_t value)
74 match_set_dp_hash_masked(match, value, UINT32_MAX);
78 match_set_dp_hash_masked(struct match *match, uint32_t value, uint32_t mask)
80 match->wc.masks.dp_hash = mask;
81 match->flow.dp_hash = value & mask;
85 match_set_recirc_id(struct match *match, uint32_t value)
87 match->flow.recirc_id = value;
88 match->wc.masks.recirc_id = UINT32_MAX;
92 match_set_conj_id(struct match *match, uint32_t value)
94 match->flow.conj_id = value;
95 match->wc.masks.conj_id = UINT32_MAX;
99 match_set_reg(struct match *match, unsigned int reg_idx, uint32_t value)
101 match_set_reg_masked(match, reg_idx, value, UINT32_MAX);
105 match_set_reg_masked(struct match *match, unsigned int reg_idx,
106 uint32_t value, uint32_t mask)
108 ovs_assert(reg_idx < FLOW_N_REGS);
109 flow_wildcards_set_reg_mask(&match->wc, reg_idx, mask);
110 match->flow.regs[reg_idx] = value & mask;
114 match_set_xreg(struct match *match, unsigned int xreg_idx, uint64_t value)
116 match_set_xreg_masked(match, xreg_idx, value, UINT64_MAX);
120 match_set_xreg_masked(struct match *match, unsigned int xreg_idx,
121 uint64_t value, uint64_t mask)
123 ovs_assert(xreg_idx < FLOW_N_XREGS);
124 flow_wildcards_set_xreg_mask(&match->wc, xreg_idx, mask);
125 flow_set_xreg(&match->flow, xreg_idx, value & mask);
129 match_set_actset_output(struct match *match, ofp_port_t actset_output)
131 match->wc.masks.actset_output = u16_to_ofp(UINT16_MAX);
132 match->flow.actset_output = actset_output;
136 match_set_metadata(struct match *match, ovs_be64 metadata)
138 match_set_metadata_masked(match, metadata, OVS_BE64_MAX);
142 match_set_metadata_masked(struct match *match,
143 ovs_be64 metadata, ovs_be64 mask)
145 match->wc.masks.metadata = mask;
146 match->flow.metadata = metadata & mask;
150 match_set_tun_id(struct match *match, ovs_be64 tun_id)
152 match_set_tun_id_masked(match, tun_id, OVS_BE64_MAX);
156 match_set_tun_id_masked(struct match *match, ovs_be64 tun_id, ovs_be64 mask)
158 match->wc.masks.tunnel.tun_id = mask;
159 match->flow.tunnel.tun_id = tun_id & mask;
163 match_set_tun_src(struct match *match, ovs_be32 src)
165 match_set_tun_src_masked(match, src, OVS_BE32_MAX);
169 match_set_tun_src_masked(struct match *match, ovs_be32 src, ovs_be32 mask)
171 match->wc.masks.tunnel.ip_src = mask;
172 match->flow.tunnel.ip_src = src & mask;
176 match_set_tun_dst(struct match *match, ovs_be32 dst)
178 match_set_tun_dst_masked(match, dst, OVS_BE32_MAX);
182 match_set_tun_dst_masked(struct match *match, ovs_be32 dst, ovs_be32 mask)
184 match->wc.masks.tunnel.ip_dst = mask;
185 match->flow.tunnel.ip_dst = dst & mask;
189 match_set_tun_ttl(struct match *match, uint8_t ttl)
191 match_set_tun_ttl_masked(match, ttl, UINT8_MAX);
195 match_set_tun_ttl_masked(struct match *match, uint8_t ttl, uint8_t mask)
197 match->wc.masks.tunnel.ip_ttl = mask;
198 match->flow.tunnel.ip_ttl = ttl & mask;
202 match_set_tun_tos(struct match *match, uint8_t tos)
204 match_set_tun_tos_masked(match, tos, UINT8_MAX);
208 match_set_tun_tos_masked(struct match *match, uint8_t tos, uint8_t mask)
210 match->wc.masks.tunnel.ip_tos = mask;
211 match->flow.tunnel.ip_tos = tos & mask;
215 match_set_tun_flags(struct match *match, uint16_t flags)
217 match_set_tun_flags_masked(match, flags, UINT16_MAX);
221 match_set_tun_flags_masked(struct match *match, uint16_t flags, uint16_t mask)
223 match->wc.masks.tunnel.flags = mask;
224 match->flow.tunnel.flags = flags & mask;
228 match_set_in_port(struct match *match, ofp_port_t ofp_port)
230 match->wc.masks.in_port.ofp_port = u16_to_ofp(UINT16_MAX);
231 match->flow.in_port.ofp_port = ofp_port;
235 match_set_skb_priority(struct match *match, uint32_t skb_priority)
237 match->wc.masks.skb_priority = UINT32_MAX;
238 match->flow.skb_priority = skb_priority;
242 match_set_pkt_mark(struct match *match, uint32_t pkt_mark)
244 match_set_pkt_mark_masked(match, pkt_mark, UINT32_MAX);
248 match_set_pkt_mark_masked(struct match *match, uint32_t pkt_mark, uint32_t mask)
250 match->flow.pkt_mark = pkt_mark & mask;
251 match->wc.masks.pkt_mark = mask;
255 match_set_dl_type(struct match *match, ovs_be16 dl_type)
257 match->wc.masks.dl_type = OVS_BE16_MAX;
258 match->flow.dl_type = dl_type;
261 /* Modifies 'value_src' so that the Ethernet address must match 'value_dst'
262 * exactly. 'mask_dst' is set to all 1s. */
264 set_eth(const uint8_t value_src[ETH_ADDR_LEN],
265 uint8_t value_dst[ETH_ADDR_LEN],
266 uint8_t mask_dst[ETH_ADDR_LEN])
268 memcpy(value_dst, value_src, ETH_ADDR_LEN);
269 memset(mask_dst, 0xff, ETH_ADDR_LEN);
272 /* Modifies 'value_src' so that the Ethernet address must match 'value_src'
273 * after each byte is ANDed with the appropriate byte in 'mask_src'.
274 * 'mask_dst' is set to 'mask_src' */
276 set_eth_masked(const uint8_t value_src[ETH_ADDR_LEN],
277 const uint8_t mask_src[ETH_ADDR_LEN],
278 uint8_t value_dst[ETH_ADDR_LEN],
279 uint8_t mask_dst[ETH_ADDR_LEN])
283 for (i = 0; i < ETH_ADDR_LEN; i++) {
284 value_dst[i] = value_src[i] & mask_src[i];
285 mask_dst[i] = mask_src[i];
289 /* Modifies 'rule' so that the source Ethernet address must match 'dl_src'
292 match_set_dl_src(struct match *match, const uint8_t dl_src[ETH_ADDR_LEN])
294 set_eth(dl_src, match->flow.dl_src, match->wc.masks.dl_src);
297 /* Modifies 'rule' so that the source Ethernet address must match 'dl_src'
298 * after each byte is ANDed with the appropriate byte in 'mask'. */
300 match_set_dl_src_masked(struct match *match,
301 const uint8_t dl_src[ETH_ADDR_LEN],
302 const uint8_t mask[ETH_ADDR_LEN])
304 set_eth_masked(dl_src, mask, match->flow.dl_src, match->wc.masks.dl_src);
307 /* Modifies 'match' so that the Ethernet address must match 'dl_dst'
310 match_set_dl_dst(struct match *match, const uint8_t dl_dst[ETH_ADDR_LEN])
312 set_eth(dl_dst, match->flow.dl_dst, match->wc.masks.dl_dst);
315 /* Modifies 'match' so that the Ethernet address must match 'dl_dst' after each
316 * byte is ANDed with the appropriate byte in 'mask'.
318 * This function will assert-fail if 'mask' is invalid. Only 'mask' values
319 * accepted by flow_wildcards_is_dl_dst_mask_valid() are allowed. */
321 match_set_dl_dst_masked(struct match *match,
322 const uint8_t dl_dst[ETH_ADDR_LEN],
323 const uint8_t mask[ETH_ADDR_LEN])
325 set_eth_masked(dl_dst, mask, match->flow.dl_dst, match->wc.masks.dl_dst);
329 match_set_dl_tci(struct match *match, ovs_be16 tci)
331 match_set_dl_tci_masked(match, tci, htons(0xffff));
335 match_set_dl_tci_masked(struct match *match, ovs_be16 tci, ovs_be16 mask)
337 match->flow.vlan_tci = tci & mask;
338 match->wc.masks.vlan_tci = mask;
341 /* Modifies 'match' so that the VLAN VID is wildcarded. If the PCP is already
342 * wildcarded, then 'match' will match a packet regardless of whether it has an
343 * 802.1Q header or not. */
345 match_set_any_vid(struct match *match)
347 if (match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK)) {
348 match->wc.masks.vlan_tci &= ~htons(VLAN_VID_MASK);
349 match->flow.vlan_tci &= ~htons(VLAN_VID_MASK);
351 match_set_dl_tci_masked(match, htons(0), htons(0));
355 /* Modifies 'match' depending on 'dl_vlan':
357 * - If 'dl_vlan' is htons(OFP_VLAN_NONE), makes 'match' match only packets
358 * without an 802.1Q header.
360 * - Otherwise, makes 'match' match only packets with an 802.1Q header whose
361 * VID equals the low 12 bits of 'dl_vlan'.
364 match_set_dl_vlan(struct match *match, ovs_be16 dl_vlan)
366 flow_set_dl_vlan(&match->flow, dl_vlan);
367 if (dl_vlan == htons(OFP10_VLAN_NONE)) {
368 match->wc.masks.vlan_tci = OVS_BE16_MAX;
370 match->wc.masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI);
374 /* Sets the VLAN VID that 'match' matches to 'vid', which is interpreted as an
375 * OpenFlow 1.2 "vlan_vid" value, that is, the low 13 bits of 'vlan_tci' (VID
378 match_set_vlan_vid(struct match *match, ovs_be16 vid)
380 match_set_vlan_vid_masked(match, vid, htons(VLAN_VID_MASK | VLAN_CFI));
384 /* Sets the VLAN VID that 'flow' matches to 'vid', which is interpreted as an
385 * OpenFlow 1.2 "vlan_vid" value, that is, the low 13 bits of 'vlan_tci' (VID
386 * plus CFI), with the corresponding 'mask'. */
388 match_set_vlan_vid_masked(struct match *match, ovs_be16 vid, ovs_be16 mask)
390 ovs_be16 pcp_mask = htons(VLAN_PCP_MASK);
391 ovs_be16 vid_mask = htons(VLAN_VID_MASK | VLAN_CFI);
394 flow_set_vlan_vid(&match->flow, vid & mask);
395 match->wc.masks.vlan_tci = mask | (match->wc.masks.vlan_tci & pcp_mask);
398 /* Modifies 'match' so that the VLAN PCP is wildcarded. If the VID is already
399 * wildcarded, then 'match' will match a packet regardless of whether it has an
400 * 802.1Q header or not. */
402 match_set_any_pcp(struct match *match)
404 if (match->wc.masks.vlan_tci & htons(VLAN_VID_MASK)) {
405 match->wc.masks.vlan_tci &= ~htons(VLAN_PCP_MASK);
406 match->flow.vlan_tci &= ~htons(VLAN_PCP_MASK);
408 match_set_dl_tci_masked(match, htons(0), htons(0));
412 /* Modifies 'match' so that it matches only packets with an 802.1Q header whose
413 * PCP equals the low 3 bits of 'dl_vlan_pcp'. */
415 match_set_dl_vlan_pcp(struct match *match, uint8_t dl_vlan_pcp)
417 flow_set_vlan_pcp(&match->flow, dl_vlan_pcp);
418 match->wc.masks.vlan_tci |= htons(VLAN_CFI | VLAN_PCP_MASK);
421 /* Modifies 'match' so that the MPLS label 'idx' matches 'lse' exactly. */
423 match_set_mpls_lse(struct match *match, int idx, ovs_be32 lse)
425 match->wc.masks.mpls_lse[idx] = OVS_BE32_MAX;
426 match->flow.mpls_lse[idx] = lse;
429 /* Modifies 'match' so that the MPLS label is wildcarded. */
431 match_set_any_mpls_label(struct match *match, int idx)
433 match->wc.masks.mpls_lse[idx] &= ~htonl(MPLS_LABEL_MASK);
434 flow_set_mpls_label(&match->flow, idx, htonl(0));
437 /* Modifies 'match' so that it matches only packets with an MPLS header whose
438 * label equals the low 20 bits of 'mpls_label'. */
440 match_set_mpls_label(struct match *match, int idx, ovs_be32 mpls_label)
442 match->wc.masks.mpls_lse[idx] |= htonl(MPLS_LABEL_MASK);
443 flow_set_mpls_label(&match->flow, idx, mpls_label);
446 /* Modifies 'match' so that the MPLS TC is wildcarded. */
448 match_set_any_mpls_tc(struct match *match, int idx)
450 match->wc.masks.mpls_lse[idx] &= ~htonl(MPLS_TC_MASK);
451 flow_set_mpls_tc(&match->flow, idx, 0);
454 /* Modifies 'match' so that it matches only packets with an MPLS header whose
455 * Traffic Class equals the low 3 bits of 'mpls_tc'. */
457 match_set_mpls_tc(struct match *match, int idx, uint8_t mpls_tc)
459 match->wc.masks.mpls_lse[idx] |= htonl(MPLS_TC_MASK);
460 flow_set_mpls_tc(&match->flow, idx, mpls_tc);
463 /* Modifies 'match' so that the MPLS stack flag is wildcarded. */
465 match_set_any_mpls_bos(struct match *match, int idx)
467 match->wc.masks.mpls_lse[idx] &= ~htonl(MPLS_BOS_MASK);
468 flow_set_mpls_bos(&match->flow, idx, 0);
471 /* Modifies 'match' so that it matches only packets with an MPLS header whose
472 * Stack Flag equals the lower bit of 'mpls_bos' */
474 match_set_mpls_bos(struct match *match, int idx, uint8_t mpls_bos)
476 match->wc.masks.mpls_lse[idx] |= htonl(MPLS_BOS_MASK);
477 flow_set_mpls_bos(&match->flow, idx, mpls_bos);
480 /* Modifies 'match' so that the MPLS LSE is wildcarded. */
482 match_set_any_mpls_lse(struct match *match, int idx)
484 match->wc.masks.mpls_lse[idx] = htonl(0);
485 flow_set_mpls_lse(&match->flow, idx, htonl(0));
489 match_set_tp_src(struct match *match, ovs_be16 tp_src)
491 match_set_tp_src_masked(match, tp_src, OVS_BE16_MAX);
495 match_set_tp_src_masked(struct match *match, ovs_be16 port, ovs_be16 mask)
497 match->flow.tp_src = port & mask;
498 match->wc.masks.tp_src = mask;
502 match_set_tp_dst(struct match *match, ovs_be16 tp_dst)
504 match_set_tp_dst_masked(match, tp_dst, OVS_BE16_MAX);
508 match_set_tp_dst_masked(struct match *match, ovs_be16 port, ovs_be16 mask)
510 match->flow.tp_dst = port & mask;
511 match->wc.masks.tp_dst = mask;
515 match_set_tcp_flags(struct match *match, ovs_be16 flags)
517 match_set_tcp_flags_masked(match, flags, OVS_BE16_MAX);
521 match_set_tcp_flags_masked(struct match *match, ovs_be16 flags, ovs_be16 mask)
523 match->flow.tcp_flags = flags & mask;
524 match->wc.masks.tcp_flags = mask;
528 match_set_nw_proto(struct match *match, uint8_t nw_proto)
530 match->flow.nw_proto = nw_proto;
531 match->wc.masks.nw_proto = UINT8_MAX;
535 match_set_nw_src(struct match *match, ovs_be32 nw_src)
537 match->flow.nw_src = nw_src;
538 match->wc.masks.nw_src = OVS_BE32_MAX;
542 match_set_nw_src_masked(struct match *match,
543 ovs_be32 nw_src, ovs_be32 mask)
545 match->flow.nw_src = nw_src & mask;
546 match->wc.masks.nw_src = mask;
550 match_set_nw_dst(struct match *match, ovs_be32 nw_dst)
552 match->flow.nw_dst = nw_dst;
553 match->wc.masks.nw_dst = OVS_BE32_MAX;
557 match_set_nw_dst_masked(struct match *match, ovs_be32 ip, ovs_be32 mask)
559 match->flow.nw_dst = ip & mask;
560 match->wc.masks.nw_dst = mask;
564 match_set_nw_dscp(struct match *match, uint8_t nw_dscp)
566 match->wc.masks.nw_tos |= IP_DSCP_MASK;
567 match->flow.nw_tos &= ~IP_DSCP_MASK;
568 match->flow.nw_tos |= nw_dscp & IP_DSCP_MASK;
572 match_set_nw_ecn(struct match *match, uint8_t nw_ecn)
574 match->wc.masks.nw_tos |= IP_ECN_MASK;
575 match->flow.nw_tos &= ~IP_ECN_MASK;
576 match->flow.nw_tos |= nw_ecn & IP_ECN_MASK;
580 match_set_nw_ttl(struct match *match, uint8_t nw_ttl)
582 match->wc.masks.nw_ttl = UINT8_MAX;
583 match->flow.nw_ttl = nw_ttl;
587 match_set_nw_frag(struct match *match, uint8_t nw_frag)
589 match->wc.masks.nw_frag |= FLOW_NW_FRAG_MASK;
590 match->flow.nw_frag = nw_frag;
594 match_set_nw_frag_masked(struct match *match,
595 uint8_t nw_frag, uint8_t mask)
597 match->flow.nw_frag = nw_frag & mask;
598 match->wc.masks.nw_frag = mask;
602 match_set_icmp_type(struct match *match, uint8_t icmp_type)
604 match_set_tp_src(match, htons(icmp_type));
608 match_set_icmp_code(struct match *match, uint8_t icmp_code)
610 match_set_tp_dst(match, htons(icmp_code));
614 match_set_arp_sha(struct match *match, const uint8_t sha[ETH_ADDR_LEN])
616 memcpy(match->flow.arp_sha, sha, ETH_ADDR_LEN);
617 memset(match->wc.masks.arp_sha, UINT8_MAX, ETH_ADDR_LEN);
621 match_set_arp_sha_masked(struct match *match,
622 const uint8_t arp_sha[ETH_ADDR_LEN],
623 const uint8_t mask[ETH_ADDR_LEN])
625 set_eth_masked(arp_sha, mask,
626 match->flow.arp_sha, match->wc.masks.arp_sha);
630 match_set_arp_tha(struct match *match, const uint8_t tha[ETH_ADDR_LEN])
632 memcpy(match->flow.arp_tha, tha, ETH_ADDR_LEN);
633 memset(match->wc.masks.arp_tha, UINT8_MAX, ETH_ADDR_LEN);
637 match_set_arp_tha_masked(struct match *match,
638 const uint8_t arp_tha[ETH_ADDR_LEN],
639 const uint8_t mask[ETH_ADDR_LEN])
641 set_eth_masked(arp_tha, mask,
642 match->flow.arp_tha, match->wc.masks.arp_tha);
646 match_set_ipv6_src(struct match *match, const struct in6_addr *src)
648 match->flow.ipv6_src = *src;
649 match->wc.masks.ipv6_src = in6addr_exact;
653 match_set_ipv6_src_masked(struct match *match, const struct in6_addr *src,
654 const struct in6_addr *mask)
656 match->flow.ipv6_src = ipv6_addr_bitand(src, mask);
657 match->wc.masks.ipv6_src = *mask;
661 match_set_ipv6_dst(struct match *match, const struct in6_addr *dst)
663 match->flow.ipv6_dst = *dst;
664 match->wc.masks.ipv6_dst = in6addr_exact;
668 match_set_ipv6_dst_masked(struct match *match, const struct in6_addr *dst,
669 const struct in6_addr *mask)
671 match->flow.ipv6_dst = ipv6_addr_bitand(dst, mask);
672 match->wc.masks.ipv6_dst = *mask;
676 match_set_ipv6_label(struct match *match, ovs_be32 ipv6_label)
678 match->wc.masks.ipv6_label = OVS_BE32_MAX;
679 match->flow.ipv6_label = ipv6_label;
684 match_set_ipv6_label_masked(struct match *match, ovs_be32 ipv6_label,
687 match->flow.ipv6_label = ipv6_label & mask;
688 match->wc.masks.ipv6_label = mask;
692 match_set_nd_target(struct match *match, const struct in6_addr *target)
694 match->flow.nd_target = *target;
695 match->wc.masks.nd_target = in6addr_exact;
699 match_set_nd_target_masked(struct match *match,
700 const struct in6_addr *target,
701 const struct in6_addr *mask)
703 match->flow.nd_target = ipv6_addr_bitand(target, mask);
704 match->wc.masks.nd_target = *mask;
707 /* Returns true if 'a' and 'b' wildcard the same fields and have the same
708 * values for fixed fields, otherwise false. */
710 match_equal(const struct match *a, const struct match *b)
712 return (flow_wildcards_equal(&a->wc, &b->wc)
713 && flow_equal(&a->flow, &b->flow));
716 /* Returns a hash value for the flow and wildcards in 'match', starting from
719 match_hash(const struct match *match, uint32_t basis)
721 return flow_wildcards_hash(&match->wc, flow_hash(&match->flow, basis));
725 match_has_default_recirc_id(const struct match *m)
727 return m->flow.recirc_id == 0 && (m->wc.masks.recirc_id == UINT32_MAX ||
728 m->wc.masks.recirc_id == 0);
732 match_has_default_dp_hash(const struct match *m)
734 return ((m->flow.dp_hash | m->wc.masks.dp_hash) == 0);
737 /* Return true if the hidden fields of the match are set to the default values.
738 * The default values equals to those set up by match_init_hidden_fields(). */
740 match_has_default_hidden_fields(const struct match *m)
742 return match_has_default_recirc_id(m) && match_has_default_dp_hash(m);
746 match_init_hidden_fields(struct match *m)
748 match_set_recirc_id(m, 0);
749 match_set_dp_hash_masked(m, 0, 0);
753 format_eth_masked(struct ds *s, const char *name,
754 const uint8_t eth[ETH_ADDR_LEN],
755 const uint8_t mask[ETH_ADDR_LEN])
757 if (!eth_addr_is_zero(mask)) {
758 ds_put_format(s, "%s=", name);
759 eth_format_masked(eth, mask, s);
765 format_ip_netmask(struct ds *s, const char *name, ovs_be32 ip,
769 ds_put_format(s, "%s=", name);
770 ip_format_masked(ip, netmask, s);
776 format_ipv6_netmask(struct ds *s, const char *name,
777 const struct in6_addr *addr,
778 const struct in6_addr *netmask)
780 if (!ipv6_mask_is_any(netmask)) {
781 ds_put_format(s, "%s=", name);
782 print_ipv6_masked(s, addr, netmask);
788 format_be16_masked(struct ds *s, const char *name,
789 ovs_be16 value, ovs_be16 mask)
791 if (mask != htons(0)) {
792 ds_put_format(s, "%s=", name);
793 if (mask == OVS_BE16_MAX) {
794 ds_put_format(s, "%"PRIu16, ntohs(value));
796 ds_put_format(s, "0x%"PRIx16"/0x%"PRIx16,
797 ntohs(value), ntohs(mask));
804 format_be32_masked(struct ds *s, const char *name,
805 ovs_be32 value, ovs_be32 mask)
807 if (mask != htonl(0)) {
808 ds_put_format(s, "%s=", name);
809 if (mask == OVS_BE32_MAX) {
810 ds_put_format(s, "%"PRIu32, ntohl(value));
812 ds_put_format(s, "0x%"PRIx32"/0x%"PRIx32,
813 ntohl(value), ntohl(mask));
820 format_uint32_masked(struct ds *s, const char *name,
821 uint32_t value, uint32_t mask)
824 ds_put_format(s, "%s=%#"PRIx32, name, value);
825 if (mask != UINT32_MAX) {
826 ds_put_format(s, "/%#"PRIx32, mask);
833 format_be64_masked(struct ds *s, const char *name,
834 ovs_be64 value, ovs_be64 mask)
836 if (mask != htonll(0)) {
837 ds_put_format(s, "%s=%#"PRIx64, name, ntohll(value));
838 if (mask != OVS_BE64_MAX) {
839 ds_put_format(s, "/%#"PRIx64, ntohll(mask));
846 format_flow_tunnel(struct ds *s, const struct match *match)
848 const struct flow_wildcards *wc = &match->wc;
849 const struct flow_tnl *tnl = &match->flow.tunnel;
851 format_be64_masked(s, "tun_id", tnl->tun_id, wc->masks.tunnel.tun_id);
852 format_ip_netmask(s, "tun_src", tnl->ip_src, wc->masks.tunnel.ip_src);
853 format_ip_netmask(s, "tun_dst", tnl->ip_dst, wc->masks.tunnel.ip_dst);
855 if (wc->masks.tunnel.ip_tos) {
856 ds_put_format(s, "tun_tos=%"PRIx8",", tnl->ip_tos);
858 if (wc->masks.tunnel.ip_ttl) {
859 ds_put_format(s, "tun_ttl=%"PRIu8",", tnl->ip_ttl);
861 if (wc->masks.tunnel.flags) {
862 format_flags(s, flow_tun_flag_to_string, tnl->flags, '|');
867 /* Appends a string representation of 'match' to 's'. If 'priority' is
868 * different from OFP_DEFAULT_PRIORITY, includes it in 's'. */
870 match_format(const struct match *match, struct ds *s, int priority)
872 const struct flow_wildcards *wc = &match->wc;
873 size_t start_len = s->length;
874 const struct flow *f = &match->flow;
875 bool skip_type = false;
876 bool skip_proto = false;
880 BUILD_ASSERT_DECL(FLOW_WC_SEQ == 30);
882 if (priority != OFP_DEFAULT_PRIORITY) {
883 ds_put_format(s, "priority=%d,", priority);
886 format_uint32_masked(s, "pkt_mark", f->pkt_mark, wc->masks.pkt_mark);
888 if (wc->masks.recirc_id) {
889 format_uint32_masked(s, "recirc_id", f->recirc_id,
890 wc->masks.recirc_id);
893 if (f->dp_hash && wc->masks.dp_hash) {
894 format_uint32_masked(s, "dp_hash", f->dp_hash,
898 if (wc->masks.conj_id) {
899 ds_put_format(s, "conj_id=%"PRIu32",", f->conj_id);
902 if (wc->masks.skb_priority) {
903 ds_put_format(s, "skb_priority=%#"PRIx32",", f->skb_priority);
906 if (wc->masks.actset_output) {
907 ds_put_cstr(s, "actset_output=");
908 ofputil_format_port(f->actset_output, s);
912 if (wc->masks.dl_type) {
914 if (f->dl_type == htons(ETH_TYPE_IP)) {
915 if (wc->masks.nw_proto) {
917 if (f->nw_proto == IPPROTO_ICMP) {
918 ds_put_cstr(s, "icmp,");
919 } else if (f->nw_proto == IPPROTO_IGMP) {
920 ds_put_cstr(s, "igmp,");
921 } else if (f->nw_proto == IPPROTO_TCP) {
922 ds_put_cstr(s, "tcp,");
923 } else if (f->nw_proto == IPPROTO_UDP) {
924 ds_put_cstr(s, "udp,");
925 } else if (f->nw_proto == IPPROTO_SCTP) {
926 ds_put_cstr(s, "sctp,");
928 ds_put_cstr(s, "ip,");
932 ds_put_cstr(s, "ip,");
934 } else if (f->dl_type == htons(ETH_TYPE_IPV6)) {
935 if (wc->masks.nw_proto) {
937 if (f->nw_proto == IPPROTO_ICMPV6) {
938 ds_put_cstr(s, "icmp6,");
939 } else if (f->nw_proto == IPPROTO_TCP) {
940 ds_put_cstr(s, "tcp6,");
941 } else if (f->nw_proto == IPPROTO_UDP) {
942 ds_put_cstr(s, "udp6,");
943 } else if (f->nw_proto == IPPROTO_SCTP) {
944 ds_put_cstr(s, "sctp6,");
946 ds_put_cstr(s, "ipv6,");
950 ds_put_cstr(s, "ipv6,");
952 } else if (f->dl_type == htons(ETH_TYPE_ARP)) {
953 ds_put_cstr(s, "arp,");
954 } else if (f->dl_type == htons(ETH_TYPE_RARP)) {
955 ds_put_cstr(s, "rarp,");
956 } else if (f->dl_type == htons(ETH_TYPE_MPLS)) {
957 ds_put_cstr(s, "mpls,");
958 } else if (f->dl_type == htons(ETH_TYPE_MPLS_MCAST)) {
959 ds_put_cstr(s, "mplsm,");
964 for (i = 0; i < FLOW_N_REGS; i++) {
965 #define REGNAME_LEN 20
966 char regname[REGNAME_LEN];
967 if (snprintf(regname, REGNAME_LEN, "reg%d", i) >= REGNAME_LEN) {
968 strcpy(regname, "reg?");
970 format_uint32_masked(s, regname, f->regs[i], wc->masks.regs[i]);
973 format_flow_tunnel(s, match);
975 format_be64_masked(s, "metadata", f->metadata, wc->masks.metadata);
977 if (wc->masks.in_port.ofp_port) {
978 ds_put_cstr(s, "in_port=");
979 ofputil_format_port(f->in_port.ofp_port, s);
982 if (wc->masks.vlan_tci) {
983 ovs_be16 vid_mask = wc->masks.vlan_tci & htons(VLAN_VID_MASK);
984 ovs_be16 pcp_mask = wc->masks.vlan_tci & htons(VLAN_PCP_MASK);
985 ovs_be16 cfi = wc->masks.vlan_tci & htons(VLAN_CFI);
987 if (cfi && f->vlan_tci & htons(VLAN_CFI)
988 && (!vid_mask || vid_mask == htons(VLAN_VID_MASK))
989 && (!pcp_mask || pcp_mask == htons(VLAN_PCP_MASK))
990 && (vid_mask || pcp_mask)) {
992 ds_put_format(s, "dl_vlan=%"PRIu16",",
993 vlan_tci_to_vid(f->vlan_tci));
996 ds_put_format(s, "dl_vlan_pcp=%d,",
997 vlan_tci_to_pcp(f->vlan_tci));
999 } else if (wc->masks.vlan_tci == htons(0xffff)) {
1000 ds_put_format(s, "vlan_tci=0x%04"PRIx16",", ntohs(f->vlan_tci));
1002 ds_put_format(s, "vlan_tci=0x%04"PRIx16"/0x%04"PRIx16",",
1003 ntohs(f->vlan_tci), ntohs(wc->masks.vlan_tci));
1006 format_eth_masked(s, "dl_src", f->dl_src, wc->masks.dl_src);
1007 format_eth_masked(s, "dl_dst", f->dl_dst, wc->masks.dl_dst);
1008 if (!skip_type && wc->masks.dl_type) {
1009 ds_put_format(s, "dl_type=0x%04"PRIx16",", ntohs(f->dl_type));
1011 if (f->dl_type == htons(ETH_TYPE_IPV6)) {
1012 format_ipv6_netmask(s, "ipv6_src", &f->ipv6_src, &wc->masks.ipv6_src);
1013 format_ipv6_netmask(s, "ipv6_dst", &f->ipv6_dst, &wc->masks.ipv6_dst);
1014 if (wc->masks.ipv6_label) {
1015 if (wc->masks.ipv6_label == OVS_BE32_MAX) {
1016 ds_put_format(s, "ipv6_label=0x%05"PRIx32",",
1017 ntohl(f->ipv6_label));
1019 ds_put_format(s, "ipv6_label=0x%05"PRIx32"/0x%05"PRIx32",",
1020 ntohl(f->ipv6_label),
1021 ntohl(wc->masks.ipv6_label));
1024 } else if (f->dl_type == htons(ETH_TYPE_ARP) ||
1025 f->dl_type == htons(ETH_TYPE_RARP)) {
1026 format_ip_netmask(s, "arp_spa", f->nw_src, wc->masks.nw_src);
1027 format_ip_netmask(s, "arp_tpa", f->nw_dst, wc->masks.nw_dst);
1029 format_ip_netmask(s, "nw_src", f->nw_src, wc->masks.nw_src);
1030 format_ip_netmask(s, "nw_dst", f->nw_dst, wc->masks.nw_dst);
1032 if (!skip_proto && wc->masks.nw_proto) {
1033 if (f->dl_type == htons(ETH_TYPE_ARP) ||
1034 f->dl_type == htons(ETH_TYPE_RARP)) {
1035 ds_put_format(s, "arp_op=%"PRIu8",", f->nw_proto);
1037 ds_put_format(s, "nw_proto=%"PRIu8",", f->nw_proto);
1040 if (f->dl_type == htons(ETH_TYPE_ARP) ||
1041 f->dl_type == htons(ETH_TYPE_RARP)) {
1042 format_eth_masked(s, "arp_sha", f->arp_sha, wc->masks.arp_sha);
1043 format_eth_masked(s, "arp_tha", f->arp_tha, wc->masks.arp_tha);
1045 if (wc->masks.nw_tos & IP_DSCP_MASK) {
1046 ds_put_format(s, "nw_tos=%"PRIu8",", f->nw_tos & IP_DSCP_MASK);
1048 if (wc->masks.nw_tos & IP_ECN_MASK) {
1049 ds_put_format(s, "nw_ecn=%"PRIu8",", f->nw_tos & IP_ECN_MASK);
1051 if (wc->masks.nw_ttl) {
1052 ds_put_format(s, "nw_ttl=%"PRIu8",", f->nw_ttl);
1054 if (wc->masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK)) {
1055 ds_put_format(s, "mpls_label=%"PRIu32",",
1056 mpls_lse_to_label(f->mpls_lse[0]));
1058 if (wc->masks.mpls_lse[0] & htonl(MPLS_TC_MASK)) {
1059 ds_put_format(s, "mpls_tc=%"PRIu8",",
1060 mpls_lse_to_tc(f->mpls_lse[0]));
1062 if (wc->masks.mpls_lse[0] & htonl(MPLS_TTL_MASK)) {
1063 ds_put_format(s, "mpls_ttl=%"PRIu8",",
1064 mpls_lse_to_ttl(f->mpls_lse[0]));
1066 if (wc->masks.mpls_lse[0] & htonl(MPLS_BOS_MASK)) {
1067 ds_put_format(s, "mpls_bos=%"PRIu8",",
1068 mpls_lse_to_bos(f->mpls_lse[0]));
1070 format_be32_masked(s, "mpls_lse1", f->mpls_lse[1], wc->masks.mpls_lse[1]);
1071 format_be32_masked(s, "mpls_lse2", f->mpls_lse[2], wc->masks.mpls_lse[2]);
1073 switch (wc->masks.nw_frag) {
1074 case FLOW_NW_FRAG_ANY | FLOW_NW_FRAG_LATER:
1075 ds_put_format(s, "nw_frag=%s,",
1076 f->nw_frag & FLOW_NW_FRAG_ANY
1077 ? (f->nw_frag & FLOW_NW_FRAG_LATER ? "later" : "first")
1078 : (f->nw_frag & FLOW_NW_FRAG_LATER ? "<error>" : "no"));
1081 case FLOW_NW_FRAG_ANY:
1082 ds_put_format(s, "nw_frag=%s,",
1083 f->nw_frag & FLOW_NW_FRAG_ANY ? "yes" : "no");
1086 case FLOW_NW_FRAG_LATER:
1087 ds_put_format(s, "nw_frag=%s,",
1088 f->nw_frag & FLOW_NW_FRAG_LATER ? "later" : "not_later");
1091 if (f->dl_type == htons(ETH_TYPE_IP) &&
1092 f->nw_proto == IPPROTO_ICMP) {
1093 format_be16_masked(s, "icmp_type", f->tp_src, wc->masks.tp_src);
1094 format_be16_masked(s, "icmp_code", f->tp_dst, wc->masks.tp_dst);
1095 } else if (f->dl_type == htons(ETH_TYPE_IP) &&
1096 f->nw_proto == IPPROTO_IGMP) {
1097 format_be16_masked(s, "igmp_type", f->tp_src, wc->masks.tp_src);
1098 format_be16_masked(s, "igmp_code", f->tp_dst, wc->masks.tp_dst);
1099 } else if (f->dl_type == htons(ETH_TYPE_IPV6) &&
1100 f->nw_proto == IPPROTO_ICMPV6) {
1101 format_be16_masked(s, "icmp_type", f->tp_src, wc->masks.tp_src);
1102 format_be16_masked(s, "icmp_code", f->tp_dst, wc->masks.tp_dst);
1103 format_ipv6_netmask(s, "nd_target", &f->nd_target,
1104 &wc->masks.nd_target);
1105 format_eth_masked(s, "nd_sll", f->arp_sha, wc->masks.arp_sha);
1106 format_eth_masked(s, "nd_tll", f->arp_tha, wc->masks.arp_tha);
1108 format_be16_masked(s, "tp_src", f->tp_src, wc->masks.tp_src);
1109 format_be16_masked(s, "tp_dst", f->tp_dst, wc->masks.tp_dst);
1111 if (is_ip_any(f) && f->nw_proto == IPPROTO_TCP && wc->masks.tcp_flags) {
1112 uint16_t mask = TCP_FLAGS(wc->masks.tcp_flags);
1114 if (mask == TCP_FLAGS(OVS_BE16_MAX)) {
1115 ds_put_cstr(s, "tcp_flags=");
1117 format_flags(s, packet_tcp_flag_to_string, ntohs(f->tcp_flags),
1120 ds_put_cstr(s, "0"); /* Zero flags. */
1123 format_flags_masked(s, "tcp_flags", packet_tcp_flag_to_string,
1124 ntohs(f->tcp_flags), mask);
1128 if (s->length > start_len) {
1133 /* Converts 'match' to a string and returns the string. If 'priority' is
1134 * different from OFP_DEFAULT_PRIORITY, includes it in the string. The caller
1135 * must free the string (with free()). */
1137 match_to_string(const struct match *match, int priority)
1139 struct ds s = DS_EMPTY_INITIALIZER;
1140 match_format(match, &s, priority);
1141 return ds_steal_cstr(&s);
1145 match_print(const struct match *match)
1147 char *s = match_to_string(match, OFP_DEFAULT_PRIORITY);
1152 /* Initializes 'dst' as a copy of 'src'. The caller must eventually free 'dst'
1153 * with minimatch_destroy(). */
1155 minimatch_init(struct minimatch *dst, const struct match *src)
1157 minimask_init(&dst->mask, &src->wc);
1158 miniflow_init_with_minimask(&dst->flow, &src->flow, &dst->mask);
1161 /* Initializes 'dst' as a copy of 'src'. The caller must eventually free 'dst'
1162 * with minimatch_destroy(). */
1164 minimatch_clone(struct minimatch *dst, const struct minimatch *src)
1166 miniflow_clone(&dst->flow, &src->flow);
1167 minimask_clone(&dst->mask, &src->mask);
1170 /* Initializes 'dst' with the data in 'src', destroying 'src'. The caller must
1171 * eventually free 'dst' with minimatch_destroy(). */
1173 minimatch_move(struct minimatch *dst, struct minimatch *src)
1175 miniflow_move(&dst->flow, &src->flow);
1176 minimask_move(&dst->mask, &src->mask);
1179 /* Frees any memory owned by 'match'. Does not free the storage in which
1180 * 'match' itself resides; the caller is responsible for that. */
1182 minimatch_destroy(struct minimatch *match)
1184 miniflow_destroy(&match->flow);
1185 minimask_destroy(&match->mask);
1188 /* Initializes 'dst' as a copy of 'src'. */
1190 minimatch_expand(const struct minimatch *src, struct match *dst)
1192 miniflow_expand(&src->flow, &dst->flow);
1193 minimask_expand(&src->mask, &dst->wc);
1196 /* Returns true if 'a' and 'b' match the same packets, false otherwise. */
1198 minimatch_equal(const struct minimatch *a, const struct minimatch *b)
1200 return (miniflow_equal(&a->flow, &b->flow)
1201 && minimask_equal(&a->mask, &b->mask));
1204 /* Returns true if 'target' satisifies 'match', that is, if each bit for which
1205 * 'match' specifies a particular value has the correct value in 'target'.
1207 * This function is equivalent to miniflow_equal_flow_in_minimask(&match->flow,
1208 * target, &match->mask) but it is faster because of the invariant that
1209 * match->flow.map and match->mask.map are the same. */
1211 minimatch_matches_flow(const struct minimatch *match,
1212 const struct flow *target)
1214 const uint64_t *target_u64 = (const uint64_t *) target;
1215 const uint64_t *flowp = miniflow_get_values(&match->flow);
1216 const uint64_t *maskp = miniflow_get_values(&match->mask.masks);
1219 MAP_FOR_EACH_INDEX(idx, match->flow.map) {
1220 if ((*flowp++ ^ target_u64[idx]) & *maskp++) {
1228 /* Appends a string representation of 'match' to 's'. If 'priority' is
1229 * different from OFP_DEFAULT_PRIORITY, includes it in 's'. */
1231 minimatch_format(const struct minimatch *match, struct ds *s, int priority)
1233 struct match megamatch;
1235 minimatch_expand(match, &megamatch);
1236 match_format(&megamatch, s, priority);
1239 /* Converts 'match' to a string and returns the string. If 'priority' is
1240 * different from OFP_DEFAULT_PRIORITY, includes it in the string. The caller
1241 * must free the string (with free()). */
1243 minimatch_to_string(const struct minimatch *match, int priority)
1245 struct match megamatch;
1247 minimatch_expand(match, &megamatch);
1248 return match_to_string(&megamatch, priority);