2 * Copyright (c) 2009, 2010, 2011, 2012 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.
18 #include <arpa/inet.h>
23 #include <netinet/in.h>
24 #include <netinet/icmp6.h>
27 #include "byte-order.h"
29 #include "dynamic-string.h"
39 VLOG_DEFINE_THIS_MODULE(odp_util);
41 /* The interface between userspace and kernel uses an "OVS_*" prefix.
42 * Since this is fairly non-specific for the OVS userspace components,
43 * "ODP_*" (Open vSwitch Datapath) is used as the prefix for
44 * interactions with the datapath.
47 /* The set of characters that may separate one action or one key attribute
49 static const char *delimiters = ", \t\r\n";
51 static int parse_odp_key_attr(const char *, const struct simap *port_names,
53 static void format_odp_key_attr(const struct nlattr *a, struct ds *ds);
55 /* Returns one the following for the action with the given OVS_ACTION_ATTR_*
58 * - For an action whose argument has a fixed length, returned that
59 * nonnegative length in bytes.
61 * - For an action with a variable-length argument, returns -2.
63 * - For an invalid 'type', returns -1. */
65 odp_action_len(uint16_t type)
67 if (type > OVS_ACTION_ATTR_MAX) {
71 switch ((enum ovs_action_attr) type) {
72 case OVS_ACTION_ATTR_OUTPUT: return sizeof(uint32_t);
73 case OVS_ACTION_ATTR_USERSPACE: return -2;
74 case OVS_ACTION_ATTR_PUSH_VLAN: return sizeof(struct ovs_action_push_vlan);
75 case OVS_ACTION_ATTR_POP_VLAN: return 0;
76 case OVS_ACTION_ATTR_SET: return -2;
77 case OVS_ACTION_ATTR_SAMPLE: return -2;
79 case OVS_ACTION_ATTR_UNSPEC:
80 case __OVS_ACTION_ATTR_MAX:
88 ovs_key_attr_to_string(enum ovs_key_attr attr)
90 static char unknown_attr[3 + INT_STRLEN(unsigned int) + 1];
93 case OVS_KEY_ATTR_UNSPEC: return "unspec";
94 case OVS_KEY_ATTR_ENCAP: return "encap";
95 case OVS_KEY_ATTR_PRIORITY: return "priority";
96 case OVS_KEY_ATTR_SKB_MARK: return "skb_mark";
97 case OVS_KEY_ATTR_TUN_ID: return "tun_id";
98 case OVS_KEY_ATTR_IPV4_TUNNEL: return "ipv4_tunnel";
99 case OVS_KEY_ATTR_IN_PORT: return "in_port";
100 case OVS_KEY_ATTR_ETHERNET: return "eth";
101 case OVS_KEY_ATTR_VLAN: return "vlan";
102 case OVS_KEY_ATTR_ETHERTYPE: return "eth_type";
103 case OVS_KEY_ATTR_IPV4: return "ipv4";
104 case OVS_KEY_ATTR_IPV6: return "ipv6";
105 case OVS_KEY_ATTR_TCP: return "tcp";
106 case OVS_KEY_ATTR_UDP: return "udp";
107 case OVS_KEY_ATTR_ICMP: return "icmp";
108 case OVS_KEY_ATTR_ICMPV6: return "icmpv6";
109 case OVS_KEY_ATTR_ARP: return "arp";
110 case OVS_KEY_ATTR_ND: return "nd";
112 case __OVS_KEY_ATTR_MAX:
114 snprintf(unknown_attr, sizeof unknown_attr, "key%u",
115 (unsigned int) attr);
121 format_generic_odp_action(struct ds *ds, const struct nlattr *a)
123 size_t len = nl_attr_get_size(a);
125 ds_put_format(ds, "action%"PRId16, nl_attr_type(a));
127 const uint8_t *unspec;
130 unspec = nl_attr_get(a);
131 for (i = 0; i < len; i++) {
132 ds_put_char(ds, i ? ' ': '(');
133 ds_put_format(ds, "%02x", unspec[i]);
135 ds_put_char(ds, ')');
140 format_odp_sample_action(struct ds *ds, const struct nlattr *attr)
142 static const struct nl_policy ovs_sample_policy[] = {
143 [OVS_SAMPLE_ATTR_PROBABILITY] = { .type = NL_A_U32 },
144 [OVS_SAMPLE_ATTR_ACTIONS] = { .type = NL_A_NESTED }
146 struct nlattr *a[ARRAY_SIZE(ovs_sample_policy)];
148 const struct nlattr *nla_acts;
151 ds_put_cstr(ds, "sample");
153 if (!nl_parse_nested(attr, ovs_sample_policy, a, ARRAY_SIZE(a))) {
154 ds_put_cstr(ds, "(error)");
158 percentage = (100.0 * nl_attr_get_u32(a[OVS_SAMPLE_ATTR_PROBABILITY])) /
161 ds_put_format(ds, "(sample=%.1f%%,", percentage);
163 ds_put_cstr(ds, "actions(");
164 nla_acts = nl_attr_get(a[OVS_SAMPLE_ATTR_ACTIONS]);
165 len = nl_attr_get_size(a[OVS_SAMPLE_ATTR_ACTIONS]);
166 format_odp_actions(ds, nla_acts, len);
167 ds_put_format(ds, "))");
171 slow_path_reason_to_string(uint32_t data)
173 enum slow_path_reason bit = (enum slow_path_reason) data;
184 case SLOW_CONTROLLER:
194 format_flags(struct ds *ds, const char *(*bit_to_string)(uint32_t),
199 ds_put_format(ds, "(");
204 uint32_t bit = rightmost_1bit(flags);
207 s = bit_to_string(bit);
209 ds_put_format(ds, "%s,", s);
218 ds_put_format(ds, "0x%"PRIx32",", bad);
222 ds_put_format(ds, ")");
226 parse_flags(const char *s, const char *(*bit_to_string)(uint32_t),
237 while (s[n] != ')') {
238 unsigned long long int flags;
242 if (sscanf(&s[n], "%lli%n", &flags, &n0) > 0 && n0 > 0) {
243 n += n0 + (s[n + n0] == ',');
248 for (bit = 1; bit; bit <<= 1) {
249 const char *name = bit_to_string(bit);
257 if (!strncmp(s + n, name, len) &&
258 (s[n + len] == ',' || s[n + len] == ')')) {
260 n += len + (s[n + len] == ',');
276 format_odp_userspace_action(struct ds *ds, const struct nlattr *attr)
278 static const struct nl_policy ovs_userspace_policy[] = {
279 [OVS_USERSPACE_ATTR_PID] = { .type = NL_A_U32 },
280 [OVS_USERSPACE_ATTR_USERDATA] = { .type = NL_A_U64, .optional = true },
282 struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)];
284 if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) {
285 ds_put_cstr(ds, "userspace(error)");
289 ds_put_format(ds, "userspace(pid=%"PRIu32,
290 nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID]));
292 if (a[OVS_USERSPACE_ATTR_USERDATA]) {
293 uint64_t userdata = nl_attr_get_u64(a[OVS_USERSPACE_ATTR_USERDATA]);
294 union user_action_cookie cookie;
296 memcpy(&cookie, &userdata, sizeof cookie);
298 switch (cookie.type) {
299 case USER_ACTION_COOKIE_SFLOW:
300 ds_put_format(ds, ",sFlow("
301 "vid=%"PRIu16",pcp=%"PRIu8",output=%"PRIu32")",
302 vlan_tci_to_vid(cookie.sflow.vlan_tci),
303 vlan_tci_to_pcp(cookie.sflow.vlan_tci),
304 cookie.sflow.output);
307 case USER_ACTION_COOKIE_SLOW_PATH:
308 ds_put_cstr(ds, ",slow_path");
309 format_flags(ds, slow_path_reason_to_string, cookie.slow_path.reason);
312 case USER_ACTION_COOKIE_UNSPEC:
314 ds_put_format(ds, ",userdata=0x%"PRIx64, userdata);
319 ds_put_char(ds, ')');
323 format_vlan_tci(struct ds *ds, ovs_be16 vlan_tci)
325 ds_put_format(ds, "vid=%"PRIu16",pcp=%d",
326 vlan_tci_to_vid(vlan_tci),
327 vlan_tci_to_pcp(vlan_tci));
328 if (!(vlan_tci & htons(VLAN_CFI))) {
329 ds_put_cstr(ds, ",cfi=0");
334 format_odp_action(struct ds *ds, const struct nlattr *a)
337 enum ovs_action_attr type = nl_attr_type(a);
338 const struct ovs_action_push_vlan *vlan;
340 expected_len = odp_action_len(nl_attr_type(a));
341 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
342 ds_put_format(ds, "bad length %zu, expected %d for: ",
343 nl_attr_get_size(a), expected_len);
344 format_generic_odp_action(ds, a);
349 case OVS_ACTION_ATTR_OUTPUT:
350 ds_put_format(ds, "%"PRIu16, nl_attr_get_u32(a));
352 case OVS_ACTION_ATTR_USERSPACE:
353 format_odp_userspace_action(ds, a);
355 case OVS_ACTION_ATTR_SET:
356 ds_put_cstr(ds, "set(");
357 format_odp_key_attr(nl_attr_get(a), ds);
358 ds_put_cstr(ds, ")");
360 case OVS_ACTION_ATTR_PUSH_VLAN:
361 vlan = nl_attr_get(a);
362 ds_put_cstr(ds, "push_vlan(");
363 if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
364 ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
366 format_vlan_tci(ds, vlan->vlan_tci);
367 ds_put_char(ds, ')');
369 case OVS_ACTION_ATTR_POP_VLAN:
370 ds_put_cstr(ds, "pop_vlan");
372 case OVS_ACTION_ATTR_SAMPLE:
373 format_odp_sample_action(ds, a);
375 case OVS_ACTION_ATTR_UNSPEC:
376 case __OVS_ACTION_ATTR_MAX:
378 format_generic_odp_action(ds, a);
384 format_odp_actions(struct ds *ds, const struct nlattr *actions,
388 const struct nlattr *a;
391 NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
393 ds_put_char(ds, ',');
395 format_odp_action(ds, a);
400 if (left == actions_len) {
401 ds_put_cstr(ds, "<empty>");
403 ds_put_format(ds, ",***%u leftover bytes*** (", left);
404 for (i = 0; i < left; i++) {
405 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
407 ds_put_char(ds, ')');
410 ds_put_cstr(ds, "drop");
415 parse_odp_action(const char *s, const struct simap *port_names,
416 struct ofpbuf *actions)
418 /* Many of the sscanf calls in this function use oversized destination
419 * fields because some sscanf() implementations truncate the range of %i
420 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
421 * value of 0x7fff. The other alternatives are to allow only a single
422 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
425 * The tun_id parser has to use an alternative approach because there is no
426 * type larger than 64 bits. */
429 unsigned long long int port;
432 if (sscanf(s, "%lli%n", &port, &n) > 0 && n > 0) {
433 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port);
439 int len = strcspn(s, delimiters);
440 struct simap_node *node;
442 node = simap_find_len(port_names, s, len);
444 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, node->data);
450 unsigned long long int pid;
451 unsigned long long int output;
456 if (sscanf(s, "userspace(pid=%lli)%n", &pid, &n) > 0 && n > 0) {
457 odp_put_userspace_action(pid, NULL, actions);
459 } else if (sscanf(s, "userspace(pid=%lli,sFlow(vid=%i,"
460 "pcp=%i,output=%lli))%n",
461 &pid, &vid, &pcp, &output, &n) > 0 && n > 0) {
462 union user_action_cookie cookie;
465 tci = vid | (pcp << VLAN_PCP_SHIFT);
470 cookie.type = USER_ACTION_COOKIE_SFLOW;
471 cookie.sflow.vlan_tci = htons(tci);
472 cookie.sflow.output = output;
473 odp_put_userspace_action(pid, &cookie, actions);
475 } else if (sscanf(s, "userspace(pid=%lli,slow_path%n", &pid, &n) > 0
477 union user_action_cookie cookie;
480 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
481 cookie.slow_path.unused = 0;
482 cookie.slow_path.reason = 0;
484 res = parse_flags(&s[n], slow_path_reason_to_string,
485 &cookie.slow_path.reason);
495 odp_put_userspace_action(pid, &cookie, actions);
497 } else if (sscanf(s, "userspace(pid=%lli,userdata="
498 "%31[x0123456789abcdefABCDEF])%n", &pid, userdata_s,
500 union user_action_cookie cookie;
503 userdata = strtoull(userdata_s, NULL, 0);
504 memcpy(&cookie, &userdata, sizeof cookie);
505 odp_put_userspace_action(pid, &cookie, actions);
510 if (!strncmp(s, "set(", 4)) {
514 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET);
515 retval = parse_odp_key_attr(s + 4, port_names, actions);
519 if (s[retval + 4] != ')') {
522 nl_msg_end_nested(actions, start_ofs);
527 struct ovs_action_push_vlan push;
528 int tpid = ETH_TYPE_VLAN;
533 if ((sscanf(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n) > 0
535 || (sscanf(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n",
536 &vid, &pcp, &cfi, &n) > 0 && n > 0)
537 || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n",
538 &tpid, &vid, &pcp, &n) > 0 && n > 0)
539 || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n",
540 &tpid, &vid, &pcp, &cfi, &n) > 0 && n > 0)) {
541 push.vlan_tpid = htons(tpid);
542 push.vlan_tci = htons((vid << VLAN_VID_SHIFT)
543 | (pcp << VLAN_PCP_SHIFT)
544 | (cfi ? VLAN_CFI : 0));
545 nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN,
552 if (!strncmp(s, "pop_vlan", 8)) {
553 nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN);
561 if (sscanf(s, "sample(sample=%lf%%,actions(%n", &percentage, &n) > 0
562 && percentage >= 0. && percentage <= 100.0
564 size_t sample_ofs, actions_ofs;
567 probability = floor(UINT32_MAX * (percentage / 100.0) + .5);
568 sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE);
569 nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY,
570 (probability <= 0 ? 0
571 : probability >= UINT32_MAX ? UINT32_MAX
574 actions_ofs = nl_msg_start_nested(actions,
575 OVS_SAMPLE_ATTR_ACTIONS);
579 n += strspn(s + n, delimiters);
584 retval = parse_odp_action(s + n, port_names, actions);
590 nl_msg_end_nested(actions, actions_ofs);
591 nl_msg_end_nested(actions, sample_ofs);
593 return s[n + 1] == ')' ? n + 2 : -EINVAL;
600 /* Parses the string representation of datapath actions, in the format output
601 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
602 * value. On success, the ODP actions are appended to 'actions' as a series of
603 * Netlink attributes. On failure, no data is appended to 'actions'. Either
604 * way, 'actions''s data might be reallocated. */
606 odp_actions_from_string(const char *s, const struct simap *port_names,
607 struct ofpbuf *actions)
611 if (!strcasecmp(s, "drop")) {
615 old_size = actions->size;
619 s += strspn(s, delimiters);
624 retval = parse_odp_action(s, port_names, actions);
625 if (retval < 0 || !strchr(delimiters, s[retval])) {
626 actions->size = old_size;
635 /* Returns the correct length of the payload for a flow key attribute of the
636 * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload
637 * is variable length. */
639 odp_flow_key_attr_len(uint16_t type)
641 if (type > OVS_KEY_ATTR_MAX) {
645 switch ((enum ovs_key_attr) type) {
646 case OVS_KEY_ATTR_ENCAP: return -2;
647 case OVS_KEY_ATTR_PRIORITY: return 4;
648 case OVS_KEY_ATTR_SKB_MARK: return 4;
649 case OVS_KEY_ATTR_TUN_ID: return 8;
650 case OVS_KEY_ATTR_IPV4_TUNNEL: return sizeof(struct ovs_key_ipv4_tunnel);
651 case OVS_KEY_ATTR_IN_PORT: return 4;
652 case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet);
653 case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16);
654 case OVS_KEY_ATTR_ETHERTYPE: return 2;
655 case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4);
656 case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6);
657 case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp);
658 case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp);
659 case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp);
660 case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6);
661 case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp);
662 case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd);
664 case OVS_KEY_ATTR_UNSPEC:
665 case __OVS_KEY_ATTR_MAX:
673 format_generic_odp_key(const struct nlattr *a, struct ds *ds)
675 size_t len = nl_attr_get_size(a);
677 const uint8_t *unspec;
680 unspec = nl_attr_get(a);
681 for (i = 0; i < len; i++) {
682 ds_put_char(ds, i ? ' ': '(');
683 ds_put_format(ds, "%02x", unspec[i]);
685 ds_put_char(ds, ')');
690 ovs_frag_type_to_string(enum ovs_frag_type type)
693 case OVS_FRAG_TYPE_NONE:
695 case OVS_FRAG_TYPE_FIRST:
697 case OVS_FRAG_TYPE_LATER:
699 case __OVS_FRAG_TYPE_MAX:
706 tun_flag_to_string(uint32_t flags)
709 case OVS_TNL_F_DONT_FRAGMENT:
721 format_odp_key_attr(const struct nlattr *a, struct ds *ds)
723 const struct ovs_key_ethernet *eth_key;
724 const struct ovs_key_ipv4 *ipv4_key;
725 const struct ovs_key_ipv6 *ipv6_key;
726 const struct ovs_key_tcp *tcp_key;
727 const struct ovs_key_udp *udp_key;
728 const struct ovs_key_icmp *icmp_key;
729 const struct ovs_key_icmpv6 *icmpv6_key;
730 const struct ovs_key_arp *arp_key;
731 const struct ovs_key_nd *nd_key;
732 const struct ovs_key_ipv4_tunnel *ipv4_tun_key;
733 enum ovs_key_attr attr = nl_attr_type(a);
736 ds_put_cstr(ds, ovs_key_attr_to_string(attr));
737 expected_len = odp_flow_key_attr_len(nl_attr_type(a));
738 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
739 ds_put_format(ds, "(bad length %zu, expected %d)",
741 odp_flow_key_attr_len(nl_attr_type(a)));
742 format_generic_odp_key(a, ds);
747 case OVS_KEY_ATTR_ENCAP:
748 ds_put_cstr(ds, "(");
749 if (nl_attr_get_size(a)) {
750 odp_flow_key_format(nl_attr_get(a), nl_attr_get_size(a), ds);
752 ds_put_char(ds, ')');
755 case OVS_KEY_ATTR_PRIORITY:
756 ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a));
759 case OVS_KEY_ATTR_SKB_MARK:
760 ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a));
763 case OVS_KEY_ATTR_TUN_ID:
764 ds_put_format(ds, "(%#"PRIx64")", ntohll(nl_attr_get_be64(a)));
767 case OVS_KEY_ATTR_IPV4_TUNNEL:
768 ipv4_tun_key = nl_attr_get(a);
769 ds_put_format(ds, "(tun_id=0x%"PRIx64",src="IP_FMT",dst="IP_FMT","
770 "tos=0x%"PRIx8",ttl=%"PRIu8",flags",
771 ntohll(ipv4_tun_key->tun_id),
772 IP_ARGS(&ipv4_tun_key->ipv4_src),
773 IP_ARGS(&ipv4_tun_key->ipv4_dst),
774 ipv4_tun_key->ipv4_tos, ipv4_tun_key->ipv4_ttl);
776 format_flags(ds, tun_flag_to_string, ipv4_tun_key->tun_flags);
777 ds_put_format(ds, ")");
780 case OVS_KEY_ATTR_IN_PORT:
781 ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a));
784 case OVS_KEY_ATTR_ETHERNET:
785 eth_key = nl_attr_get(a);
786 ds_put_format(ds, "(src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT")",
787 ETH_ADDR_ARGS(eth_key->eth_src),
788 ETH_ADDR_ARGS(eth_key->eth_dst));
791 case OVS_KEY_ATTR_VLAN:
792 ds_put_char(ds, '(');
793 format_vlan_tci(ds, nl_attr_get_be16(a));
794 ds_put_char(ds, ')');
797 case OVS_KEY_ATTR_ETHERTYPE:
798 ds_put_format(ds, "(0x%04"PRIx16")",
799 ntohs(nl_attr_get_be16(a)));
802 case OVS_KEY_ATTR_IPV4:
803 ipv4_key = nl_attr_get(a);
804 ds_put_format(ds, "(src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
805 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s)",
806 IP_ARGS(&ipv4_key->ipv4_src),
807 IP_ARGS(&ipv4_key->ipv4_dst),
808 ipv4_key->ipv4_proto, ipv4_key->ipv4_tos,
810 ovs_frag_type_to_string(ipv4_key->ipv4_frag));
813 case OVS_KEY_ATTR_IPV6: {
814 char src_str[INET6_ADDRSTRLEN];
815 char dst_str[INET6_ADDRSTRLEN];
817 ipv6_key = nl_attr_get(a);
818 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
819 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
821 ds_put_format(ds, "(src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8
822 ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s)",
823 src_str, dst_str, ntohl(ipv6_key->ipv6_label),
824 ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass,
825 ipv6_key->ipv6_hlimit,
826 ovs_frag_type_to_string(ipv6_key->ipv6_frag));
830 case OVS_KEY_ATTR_TCP:
831 tcp_key = nl_attr_get(a);
832 ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
833 ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst));
836 case OVS_KEY_ATTR_UDP:
837 udp_key = nl_attr_get(a);
838 ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
839 ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst));
842 case OVS_KEY_ATTR_ICMP:
843 icmp_key = nl_attr_get(a);
844 ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")",
845 icmp_key->icmp_type, icmp_key->icmp_code);
848 case OVS_KEY_ATTR_ICMPV6:
849 icmpv6_key = nl_attr_get(a);
850 ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")",
851 icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code);
854 case OVS_KEY_ATTR_ARP:
855 arp_key = nl_attr_get(a);
856 ds_put_format(ds, "(sip="IP_FMT",tip="IP_FMT",op=%"PRIu16","
857 "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT")",
858 IP_ARGS(&arp_key->arp_sip), IP_ARGS(&arp_key->arp_tip),
859 ntohs(arp_key->arp_op), ETH_ADDR_ARGS(arp_key->arp_sha),
860 ETH_ADDR_ARGS(arp_key->arp_tha));
863 case OVS_KEY_ATTR_ND: {
864 char target[INET6_ADDRSTRLEN];
866 nd_key = nl_attr_get(a);
867 inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target);
869 ds_put_format(ds, "(target=%s", target);
870 if (!eth_addr_is_zero(nd_key->nd_sll)) {
871 ds_put_format(ds, ",sll="ETH_ADDR_FMT,
872 ETH_ADDR_ARGS(nd_key->nd_sll));
874 if (!eth_addr_is_zero(nd_key->nd_tll)) {
875 ds_put_format(ds, ",tll="ETH_ADDR_FMT,
876 ETH_ADDR_ARGS(nd_key->nd_tll));
878 ds_put_char(ds, ')');
882 case OVS_KEY_ATTR_UNSPEC:
883 case __OVS_KEY_ATTR_MAX:
885 format_generic_odp_key(a, ds);
890 /* Appends to 'ds' a string representation of the 'key_len' bytes of
891 * OVS_KEY_ATTR_* attributes in 'key'. */
893 odp_flow_key_format(const struct nlattr *key, size_t key_len, struct ds *ds)
896 const struct nlattr *a;
899 NL_ATTR_FOR_EACH (a, left, key, key_len) {
901 ds_put_char(ds, ',');
903 format_odp_key_attr(a, ds);
908 if (left == key_len) {
909 ds_put_cstr(ds, "<empty>");
911 ds_put_format(ds, ",***%u leftover bytes*** (", left);
912 for (i = 0; i < left; i++) {
913 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
915 ds_put_char(ds, ')');
918 ds_put_cstr(ds, "<empty>");
923 put_nd_key(int n, const char *nd_target_s,
924 const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *key)
926 struct ovs_key_nd nd_key;
928 memset(&nd_key, 0, sizeof nd_key);
929 if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
933 memcpy(nd_key.nd_sll, nd_sll, ETH_ADDR_LEN);
936 memcpy(nd_key.nd_tll, nd_tll, ETH_ADDR_LEN);
938 nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, &nd_key, sizeof nd_key);
943 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
945 if (!strcasecmp(s, "no")) {
946 *type = OVS_FRAG_TYPE_NONE;
947 } else if (!strcasecmp(s, "first")) {
948 *type = OVS_FRAG_TYPE_FIRST;
949 } else if (!strcasecmp(s, "later")) {
950 *type = OVS_FRAG_TYPE_LATER;
958 parse_odp_key_attr(const char *s, const struct simap *port_names,
961 /* Many of the sscanf calls in this function use oversized destination
962 * fields because some sscanf() implementations truncate the range of %i
963 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
964 * value of 0x7fff. The other alternatives are to allow only a single
965 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
968 * The tun_id parser has to use an alternative approach because there is no
969 * type larger than 64 bits. */
972 unsigned long long int priority;
975 if (sscanf(s, "priority(%lli)%n", &priority, &n) > 0 && n > 0) {
976 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
982 unsigned long long int mark;
985 if (sscanf(s, "skb_mark(%lli)%n", &mark, &n) > 0 && n > 0) {
986 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
995 if (sscanf(s, "tun_id(%31[x0123456789abcdefABCDEF])%n",
996 tun_id_s, &n) > 0 && n > 0) {
997 uint64_t tun_id = strtoull(tun_id_s, NULL, 0);
998 nl_msg_put_be64(key, OVS_KEY_ATTR_TUN_ID, htonll(tun_id));
1006 struct ovs_key_ipv4_tunnel tun_key;
1009 if (sscanf(s, "ipv4_tunnel(tun_id=%31[x0123456789abcdefABCDEF],"
1010 "src="IP_SCAN_FMT",dst="IP_SCAN_FMT
1011 ",tos=%i,ttl=%i,flags%n", tun_id_s,
1012 IP_SCAN_ARGS(&tun_key.ipv4_src),
1013 IP_SCAN_ARGS(&tun_key.ipv4_dst), &tos, &ttl,
1017 tun_key.tun_id = htonll(strtoull(tun_id_s, NULL, 0));
1018 tun_key.ipv4_tos = tos;
1019 tun_key.ipv4_ttl = ttl;
1021 res = parse_flags(&s[n], tun_flag_to_string, &tun_key.tun_flags);
1031 memset(&tun_key.pad, 0, sizeof tun_key.pad);
1032 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4_TUNNEL, &tun_key,
1039 unsigned long long int in_port;
1042 if (sscanf(s, "in_port(%lli)%n", &in_port, &n) > 0 && n > 0) {
1043 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1048 if (port_names && !strncmp(s, "in_port(", 8)) {
1050 const struct simap_node *node;
1054 name_len = strcspn(s, ")");
1055 node = simap_find_len(port_names, name, name_len);
1057 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, node->data);
1058 return 8 + name_len + 1;
1063 struct ovs_key_ethernet eth_key;
1067 "eth(src="ETH_ADDR_SCAN_FMT",dst="ETH_ADDR_SCAN_FMT")%n",
1068 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1069 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n) > 0 && n > 0) {
1070 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1071 ð_key, sizeof eth_key);
1082 if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i)%n", &vid, &pcp, &n) > 0
1084 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1085 htons((vid << VLAN_VID_SHIFT) |
1086 (pcp << VLAN_PCP_SHIFT) |
1089 } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i,cfi=%i)%n",
1090 &vid, &pcp, &cfi, &n) > 0
1092 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1093 htons((vid << VLAN_VID_SHIFT) |
1094 (pcp << VLAN_PCP_SHIFT) |
1095 (cfi ? VLAN_CFI : 0)));
1104 if (sscanf(s, "eth_type(%i)%n", ð_type, &n) > 0 && n > 0) {
1105 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1117 enum ovs_frag_type ipv4_frag;
1120 if (sscanf(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
1121 "proto=%i,tos=%i,ttl=%i,frag=%7[a-z])%n",
1122 IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_dst),
1123 &ipv4_proto, &ipv4_tos, &ipv4_ttl, frag, &n) > 0
1125 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1126 struct ovs_key_ipv4 ipv4_key;
1128 ipv4_key.ipv4_src = ipv4_src;
1129 ipv4_key.ipv4_dst = ipv4_dst;
1130 ipv4_key.ipv4_proto = ipv4_proto;
1131 ipv4_key.ipv4_tos = ipv4_tos;
1132 ipv4_key.ipv4_ttl = ipv4_ttl;
1133 ipv4_key.ipv4_frag = ipv4_frag;
1134 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1135 &ipv4_key, sizeof ipv4_key);
1141 char ipv6_src_s[IPV6_SCAN_LEN + 1];
1142 char ipv6_dst_s[IPV6_SCAN_LEN + 1];
1148 enum ovs_frag_type ipv6_frag;
1151 if (sscanf(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
1152 "label=%i,proto=%i,tclass=%i,hlimit=%i,frag=%7[a-z])%n",
1153 ipv6_src_s, ipv6_dst_s, &ipv6_label,
1154 &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n) > 0
1156 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
1157 struct ovs_key_ipv6 ipv6_key;
1159 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
1160 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
1163 ipv6_key.ipv6_label = htonl(ipv6_label);
1164 ipv6_key.ipv6_proto = ipv6_proto;
1165 ipv6_key.ipv6_tclass = ipv6_tclass;
1166 ipv6_key.ipv6_hlimit = ipv6_hlimit;
1167 ipv6_key.ipv6_frag = ipv6_frag;
1168 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
1169 &ipv6_key, sizeof ipv6_key);
1179 if (sscanf(s, "tcp(src=%i,dst=%i)%n",&tcp_src, &tcp_dst, &n) > 0
1181 struct ovs_key_tcp tcp_key;
1183 tcp_key.tcp_src = htons(tcp_src);
1184 tcp_key.tcp_dst = htons(tcp_dst);
1185 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
1195 if (sscanf(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n) > 0
1197 struct ovs_key_udp udp_key;
1199 udp_key.udp_src = htons(udp_src);
1200 udp_key.udp_dst = htons(udp_dst);
1201 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
1211 if (sscanf(s, "icmp(type=%i,code=%i)%n",
1212 &icmp_type, &icmp_code, &n) > 0
1214 struct ovs_key_icmp icmp_key;
1216 icmp_key.icmp_type = icmp_type;
1217 icmp_key.icmp_code = icmp_code;
1218 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
1219 &icmp_key, sizeof icmp_key);
1225 struct ovs_key_icmpv6 icmpv6_key;
1228 if (sscanf(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
1229 &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,&n) > 0
1231 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
1232 &icmpv6_key, sizeof icmpv6_key);
1241 uint8_t arp_sha[ETH_ADDR_LEN];
1242 uint8_t arp_tha[ETH_ADDR_LEN];
1245 if (sscanf(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
1246 "op=%i,sha="ETH_ADDR_SCAN_FMT",tha="ETH_ADDR_SCAN_FMT")%n",
1247 IP_SCAN_ARGS(&arp_sip),
1248 IP_SCAN_ARGS(&arp_tip),
1250 ETH_ADDR_SCAN_ARGS(arp_sha),
1251 ETH_ADDR_SCAN_ARGS(arp_tha), &n) > 0 && n > 0) {
1252 struct ovs_key_arp arp_key;
1254 memset(&arp_key, 0, sizeof arp_key);
1255 arp_key.arp_sip = arp_sip;
1256 arp_key.arp_tip = arp_tip;
1257 arp_key.arp_op = htons(arp_op);
1258 memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
1259 memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
1260 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
1266 char nd_target_s[IPV6_SCAN_LEN + 1];
1267 uint8_t nd_sll[ETH_ADDR_LEN];
1268 uint8_t nd_tll[ETH_ADDR_LEN];
1271 if (sscanf(s, "nd(target="IPV6_SCAN_FMT")%n",
1272 nd_target_s, &n) > 0 && n > 0) {
1273 return put_nd_key(n, nd_target_s, NULL, NULL, key);
1275 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT")%n",
1276 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n) > 0
1278 return put_nd_key(n, nd_target_s, nd_sll, NULL, key);
1280 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",tll="ETH_ADDR_SCAN_FMT")%n",
1281 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
1283 return put_nd_key(n, nd_target_s, NULL, nd_tll, key);
1285 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT","
1286 "tll="ETH_ADDR_SCAN_FMT")%n",
1287 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
1288 ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
1290 return put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
1294 if (!strncmp(s, "encap(", 6)) {
1295 const char *start = s;
1298 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
1304 s += strspn(s, ", \t\r\n");
1307 } else if (*s == ')') {
1311 retval = parse_odp_key_attr(s, port_names, key);
1319 nl_msg_end_nested(key, encap);
1327 /* Parses the string representation of a datapath flow key, in the
1328 * format output by odp_flow_key_format(). Returns 0 if successful,
1329 * otherwise a positive errno value. On success, the flow key is
1330 * appended to 'key' as a series of Netlink attributes. On failure, no
1331 * data is appended to 'key'. Either way, 'key''s data might be
1334 * If 'port_names' is nonnull, it points to an simap that maps from a port name
1335 * to a port number. (Port names may be used instead of port numbers in
1338 * On success, the attributes appended to 'key' are individually syntactically
1339 * valid, but they may not be valid as a sequence. 'key' might, for example,
1340 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
1342 odp_flow_key_from_string(const char *s, const struct simap *port_names,
1345 const size_t old_size = key->size;
1349 s += strspn(s, delimiters);
1354 retval = parse_odp_key_attr(s, port_names, key);
1356 key->size = old_size;
1366 ovs_to_odp_frag(uint8_t nw_frag)
1368 return (nw_frag == 0 ? OVS_FRAG_TYPE_NONE
1369 : nw_frag == FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST
1370 : OVS_FRAG_TYPE_LATER);
1373 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
1374 * 'flow->in_port' is ignored (since it is likely to be an OpenFlow port
1375 * number rather than a datapath port number). Instead, if 'odp_in_port'
1376 * is anything other than OVSP_NONE, it is included in 'buf' as the input
1379 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
1380 * capable of being expanded to allow for that much space. */
1382 odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow,
1383 uint32_t odp_in_port)
1385 struct ovs_key_ethernet *eth_key;
1388 if (flow->skb_priority) {
1389 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, flow->skb_priority);
1392 if (flow->tunnel.tun_id != htonll(0)) {
1393 nl_msg_put_be64(buf, OVS_KEY_ATTR_TUN_ID, flow->tunnel.tun_id);
1396 if (flow->skb_mark) {
1397 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, flow->skb_mark);
1400 if (odp_in_port != OVSP_NONE) {
1401 nl_msg_put_u32(buf, OVS_KEY_ATTR_IN_PORT, odp_in_port);
1404 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
1406 memcpy(eth_key->eth_src, flow->dl_src, ETH_ADDR_LEN);
1407 memcpy(eth_key->eth_dst, flow->dl_dst, ETH_ADDR_LEN);
1409 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
1410 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
1411 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, flow->vlan_tci);
1412 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
1413 if (flow->vlan_tci == htons(0)) {
1420 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
1424 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, flow->dl_type);
1426 if (flow->dl_type == htons(ETH_TYPE_IP)) {
1427 struct ovs_key_ipv4 *ipv4_key;
1429 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
1431 ipv4_key->ipv4_src = flow->nw_src;
1432 ipv4_key->ipv4_dst = flow->nw_dst;
1433 ipv4_key->ipv4_proto = flow->nw_proto;
1434 ipv4_key->ipv4_tos = flow->nw_tos;
1435 ipv4_key->ipv4_ttl = flow->nw_ttl;
1436 ipv4_key->ipv4_frag = ovs_to_odp_frag(flow->nw_frag);
1437 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
1438 struct ovs_key_ipv6 *ipv6_key;
1440 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
1442 memcpy(ipv6_key->ipv6_src, &flow->ipv6_src, sizeof ipv6_key->ipv6_src);
1443 memcpy(ipv6_key->ipv6_dst, &flow->ipv6_dst, sizeof ipv6_key->ipv6_dst);
1444 ipv6_key->ipv6_label = flow->ipv6_label;
1445 ipv6_key->ipv6_proto = flow->nw_proto;
1446 ipv6_key->ipv6_tclass = flow->nw_tos;
1447 ipv6_key->ipv6_hlimit = flow->nw_ttl;
1448 ipv6_key->ipv6_frag = ovs_to_odp_frag(flow->nw_frag);
1449 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
1450 flow->dl_type == htons(ETH_TYPE_RARP)) {
1451 struct ovs_key_arp *arp_key;
1453 arp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ARP,
1455 memset(arp_key, 0, sizeof *arp_key);
1456 arp_key->arp_sip = flow->nw_src;
1457 arp_key->arp_tip = flow->nw_dst;
1458 arp_key->arp_op = htons(flow->nw_proto);
1459 memcpy(arp_key->arp_sha, flow->arp_sha, ETH_ADDR_LEN);
1460 memcpy(arp_key->arp_tha, flow->arp_tha, ETH_ADDR_LEN);
1463 if ((flow->dl_type == htons(ETH_TYPE_IP)
1464 || flow->dl_type == htons(ETH_TYPE_IPV6))
1465 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1467 if (flow->nw_proto == IPPROTO_TCP) {
1468 struct ovs_key_tcp *tcp_key;
1470 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
1472 tcp_key->tcp_src = flow->tp_src;
1473 tcp_key->tcp_dst = flow->tp_dst;
1474 } else if (flow->nw_proto == IPPROTO_UDP) {
1475 struct ovs_key_udp *udp_key;
1477 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
1479 udp_key->udp_src = flow->tp_src;
1480 udp_key->udp_dst = flow->tp_dst;
1481 } else if (flow->dl_type == htons(ETH_TYPE_IP)
1482 && flow->nw_proto == IPPROTO_ICMP) {
1483 struct ovs_key_icmp *icmp_key;
1485 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
1487 icmp_key->icmp_type = ntohs(flow->tp_src);
1488 icmp_key->icmp_code = ntohs(flow->tp_dst);
1489 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
1490 && flow->nw_proto == IPPROTO_ICMPV6) {
1491 struct ovs_key_icmpv6 *icmpv6_key;
1493 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
1494 sizeof *icmpv6_key);
1495 icmpv6_key->icmpv6_type = ntohs(flow->tp_src);
1496 icmpv6_key->icmpv6_code = ntohs(flow->tp_dst);
1498 if (icmpv6_key->icmpv6_type == ND_NEIGHBOR_SOLICIT
1499 || icmpv6_key->icmpv6_type == ND_NEIGHBOR_ADVERT) {
1500 struct ovs_key_nd *nd_key;
1502 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
1504 memcpy(nd_key->nd_target, &flow->nd_target,
1505 sizeof nd_key->nd_target);
1506 memcpy(nd_key->nd_sll, flow->arp_sha, ETH_ADDR_LEN);
1507 memcpy(nd_key->nd_tll, flow->arp_tha, ETH_ADDR_LEN);
1514 nl_msg_end_nested(buf, encap);
1519 odp_flow_key_hash(const struct nlattr *key, size_t key_len)
1521 BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t)));
1522 return hash_words((const uint32_t *) key, key_len / sizeof(uint32_t), 0);
1526 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
1527 uint64_t attrs, int out_of_range_attr,
1528 const struct nlattr *key, size_t key_len)
1533 if (VLOG_DROP_DBG(rl)) {
1538 for (i = 0; i < 64; i++) {
1539 if (attrs & (UINT64_C(1) << i)) {
1540 ds_put_format(&s, " %s", ovs_key_attr_to_string(i));
1543 if (out_of_range_attr) {
1544 ds_put_format(&s, " %d (and possibly others)", out_of_range_attr);
1547 ds_put_cstr(&s, ": ");
1548 odp_flow_key_format(key, key_len, &s);
1550 VLOG_DBG("%s:%s", title, ds_cstr(&s));
1555 odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow)
1557 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1559 if (odp_frag > OVS_FRAG_TYPE_LATER) {
1560 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag);
1564 if (odp_frag != OVS_FRAG_TYPE_NONE) {
1565 flow->nw_frag |= FLOW_NW_FRAG_ANY;
1566 if (odp_frag == OVS_FRAG_TYPE_LATER) {
1567 flow->nw_frag |= FLOW_NW_FRAG_LATER;
1574 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
1575 const struct nlattr *attrs[], uint64_t *present_attrsp,
1576 int *out_of_range_attrp)
1578 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
1579 const struct nlattr *nla;
1580 uint64_t present_attrs;
1584 *out_of_range_attrp = 0;
1585 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
1586 uint16_t type = nl_attr_type(nla);
1587 size_t len = nl_attr_get_size(nla);
1588 int expected_len = odp_flow_key_attr_len(type);
1590 if (len != expected_len && expected_len >= 0) {
1591 VLOG_ERR_RL(&rl, "attribute %s has length %zu but should have "
1592 "length %d", ovs_key_attr_to_string(type),
1597 if (type >= CHAR_BIT * sizeof present_attrs) {
1598 *out_of_range_attrp = type;
1600 if (present_attrs & (UINT64_C(1) << type)) {
1601 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
1602 ovs_key_attr_to_string(type));
1606 present_attrs |= UINT64_C(1) << type;
1611 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
1615 *present_attrsp = present_attrs;
1619 static enum odp_key_fitness
1620 check_expectations(uint64_t present_attrs, int out_of_range_attr,
1621 uint64_t expected_attrs,
1622 const struct nlattr *key, size_t key_len)
1624 uint64_t missing_attrs;
1625 uint64_t extra_attrs;
1627 missing_attrs = expected_attrs & ~present_attrs;
1628 if (missing_attrs) {
1629 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
1630 log_odp_key_attributes(&rl, "expected but not present",
1631 missing_attrs, 0, key, key_len);
1632 return ODP_FIT_TOO_LITTLE;
1635 extra_attrs = present_attrs & ~expected_attrs;
1636 if (extra_attrs || out_of_range_attr) {
1637 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
1638 log_odp_key_attributes(&rl, "present but not expected",
1639 extra_attrs, out_of_range_attr, key, key_len);
1640 return ODP_FIT_TOO_MUCH;
1643 return ODP_FIT_PERFECT;
1647 parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
1648 uint64_t present_attrs, uint64_t *expected_attrs,
1651 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1653 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
1654 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
1655 if (ntohs(flow->dl_type) < 1536) {
1656 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
1657 ntohs(flow->dl_type));
1660 *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
1662 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
1667 static enum odp_key_fitness
1668 parse_l3_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
1669 uint64_t present_attrs, int out_of_range_attr,
1670 uint64_t expected_attrs, struct flow *flow,
1671 const struct nlattr *key, size_t key_len)
1673 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1675 if (flow->dl_type == htons(ETH_TYPE_IP)) {
1676 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
1677 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
1678 const struct ovs_key_ipv4 *ipv4_key;
1680 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
1681 flow->nw_src = ipv4_key->ipv4_src;
1682 flow->nw_dst = ipv4_key->ipv4_dst;
1683 flow->nw_proto = ipv4_key->ipv4_proto;
1684 flow->nw_tos = ipv4_key->ipv4_tos;
1685 flow->nw_ttl = ipv4_key->ipv4_ttl;
1686 if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) {
1687 return ODP_FIT_ERROR;
1690 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
1691 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
1692 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
1693 const struct ovs_key_ipv6 *ipv6_key;
1695 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
1696 memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src);
1697 memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst);
1698 flow->ipv6_label = ipv6_key->ipv6_label;
1699 flow->nw_proto = ipv6_key->ipv6_proto;
1700 flow->nw_tos = ipv6_key->ipv6_tclass;
1701 flow->nw_ttl = ipv6_key->ipv6_hlimit;
1702 if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) {
1703 return ODP_FIT_ERROR;
1706 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
1707 flow->dl_type == htons(ETH_TYPE_RARP)) {
1708 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
1709 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
1710 const struct ovs_key_arp *arp_key;
1712 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
1713 flow->nw_src = arp_key->arp_sip;
1714 flow->nw_dst = arp_key->arp_tip;
1715 if (arp_key->arp_op & htons(0xff00)) {
1716 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
1717 "key", ntohs(arp_key->arp_op));
1718 return ODP_FIT_ERROR;
1720 flow->nw_proto = ntohs(arp_key->arp_op);
1721 memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN);
1722 memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN);
1726 if (flow->nw_proto == IPPROTO_TCP
1727 && (flow->dl_type == htons(ETH_TYPE_IP) ||
1728 flow->dl_type == htons(ETH_TYPE_IPV6))
1729 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1730 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
1731 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
1732 const struct ovs_key_tcp *tcp_key;
1734 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
1735 flow->tp_src = tcp_key->tcp_src;
1736 flow->tp_dst = tcp_key->tcp_dst;
1738 } else if (flow->nw_proto == IPPROTO_UDP
1739 && (flow->dl_type == htons(ETH_TYPE_IP) ||
1740 flow->dl_type == htons(ETH_TYPE_IPV6))
1741 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1742 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
1743 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
1744 const struct ovs_key_udp *udp_key;
1746 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
1747 flow->tp_src = udp_key->udp_src;
1748 flow->tp_dst = udp_key->udp_dst;
1750 } else if (flow->nw_proto == IPPROTO_ICMP
1751 && flow->dl_type == htons(ETH_TYPE_IP)
1752 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1753 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
1754 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
1755 const struct ovs_key_icmp *icmp_key;
1757 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
1758 flow->tp_src = htons(icmp_key->icmp_type);
1759 flow->tp_dst = htons(icmp_key->icmp_code);
1761 } else if (flow->nw_proto == IPPROTO_ICMPV6
1762 && flow->dl_type == htons(ETH_TYPE_IPV6)
1763 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1764 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
1765 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
1766 const struct ovs_key_icmpv6 *icmpv6_key;
1768 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
1769 flow->tp_src = htons(icmpv6_key->icmpv6_type);
1770 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
1772 if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
1773 flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) {
1774 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
1775 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
1776 const struct ovs_key_nd *nd_key;
1778 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
1779 memcpy(&flow->nd_target, nd_key->nd_target,
1780 sizeof flow->nd_target);
1781 memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN);
1782 memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN);
1788 return check_expectations(present_attrs, out_of_range_attr, expected_attrs,
1792 /* Parse 802.1Q header then encapsulated L3 attributes. */
1793 static enum odp_key_fitness
1794 parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
1795 uint64_t present_attrs, int out_of_range_attr,
1796 uint64_t expected_attrs, struct flow *flow,
1797 const struct nlattr *key, size_t key_len)
1799 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1801 const struct nlattr *encap
1802 = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)
1803 ? attrs[OVS_KEY_ATTR_ENCAP] : NULL);
1804 enum odp_key_fitness encap_fitness;
1805 enum odp_key_fitness fitness;
1808 /* Calulate fitness of outer attributes. */
1809 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
1810 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
1811 fitness = check_expectations(present_attrs, out_of_range_attr,
1812 expected_attrs, key, key_len);
1814 /* Get the VLAN TCI value. */
1815 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) {
1816 return ODP_FIT_TOO_LITTLE;
1818 tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
1819 if (tci == htons(0)) {
1820 /* Corner case for a truncated 802.1Q header. */
1821 if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) {
1822 return ODP_FIT_TOO_MUCH;
1825 } else if (!(tci & htons(VLAN_CFI))) {
1826 VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero "
1827 "but CFI bit is not set", ntohs(tci));
1828 return ODP_FIT_ERROR;
1832 * Remove the TPID from dl_type since it's not the real Ethertype. */
1833 flow->vlan_tci = tci;
1834 flow->dl_type = htons(0);
1836 /* Now parse the encapsulated attributes. */
1837 if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
1838 attrs, &present_attrs, &out_of_range_attr)) {
1839 return ODP_FIT_ERROR;
1843 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) {
1844 return ODP_FIT_ERROR;
1846 encap_fitness = parse_l3_onward(attrs, present_attrs, out_of_range_attr,
1847 expected_attrs, flow, key, key_len);
1849 /* The overall fitness is the worse of the outer and inner attributes. */
1850 return MAX(fitness, encap_fitness);
1853 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
1854 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
1855 * 'key' fits our expectations for what a flow key should contain.
1857 * The 'in_port' will be the datapath's understanding of the port. The
1858 * caller will need to translate with odp_port_to_ofp_port() if the
1859 * OpenFlow port is needed.
1861 * This function doesn't take the packet itself as an argument because none of
1862 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
1863 * it is always possible to infer which additional attribute(s) should appear
1864 * by looking at the attributes for lower-level protocols, e.g. if the network
1865 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
1866 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
1867 * must be absent. */
1868 enum odp_key_fitness
1869 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
1872 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
1873 uint64_t expected_attrs;
1874 uint64_t present_attrs;
1875 int out_of_range_attr;
1877 memset(flow, 0, sizeof *flow);
1879 /* Parse attributes. */
1880 if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs,
1881 &out_of_range_attr)) {
1882 return ODP_FIT_ERROR;
1887 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
1888 flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
1889 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
1892 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK)) {
1893 flow->skb_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_SKB_MARK]);
1894 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK;
1897 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUN_ID)) {
1898 flow->tunnel.tun_id = nl_attr_get_be64(attrs[OVS_KEY_ATTR_TUN_ID]);
1899 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUN_ID;
1902 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
1903 flow->in_port = nl_attr_get_u32(attrs[OVS_KEY_ATTR_IN_PORT]);
1904 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
1906 flow->in_port = OVSP_NONE;
1909 /* Ethernet header. */
1910 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
1911 const struct ovs_key_ethernet *eth_key;
1913 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
1914 memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN);
1915 memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN);
1917 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
1919 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
1920 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) {
1921 return ODP_FIT_ERROR;
1924 if (flow->dl_type == htons(ETH_TYPE_VLAN)) {
1925 return parse_8021q_onward(attrs, present_attrs, out_of_range_attr,
1926 expected_attrs, flow, key, key_len);
1928 return parse_l3_onward(attrs, present_attrs, out_of_range_attr,
1929 expected_attrs, flow, key, key_len);
1932 /* Returns 'fitness' as a string, for use in debug messages. */
1934 odp_key_fitness_to_string(enum odp_key_fitness fitness)
1937 case ODP_FIT_PERFECT:
1939 case ODP_FIT_TOO_MUCH:
1941 case ODP_FIT_TOO_LITTLE:
1942 return "too_little";
1950 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
1951 * Netlink PID 'pid'. If 'cookie' is nonnull, adds a userdata attribute whose
1952 * contents contains 'cookie' and returns the offset within 'odp_actions' of
1953 * the start of the cookie. (If 'cookie' is null, then the return value is not
1956 odp_put_userspace_action(uint32_t pid, const union user_action_cookie *cookie,
1957 struct ofpbuf *odp_actions)
1961 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
1962 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
1964 nl_msg_put_unspec(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
1965 cookie, sizeof *cookie);
1967 nl_msg_end_nested(odp_actions, offset);
1969 return cookie ? odp_actions->size - NLA_ALIGN(sizeof *cookie) : 0;
1972 /* The commit_odp_actions() function and its helpers. */
1975 commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type,
1976 const void *key, size_t key_size)
1978 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
1979 nl_msg_put_unspec(odp_actions, key_type, key, key_size);
1980 nl_msg_end_nested(odp_actions, offset);
1984 commit_set_tun_id_action(const struct flow *flow, struct flow *base,
1985 struct ofpbuf *odp_actions)
1987 if (base->tunnel.tun_id == flow->tunnel.tun_id) {
1990 base->tunnel.tun_id = flow->tunnel.tun_id;
1992 commit_set_action(odp_actions, OVS_KEY_ATTR_TUN_ID,
1993 &base->tunnel.tun_id, sizeof(base->tunnel.tun_id));
1997 commit_set_ether_addr_action(const struct flow *flow, struct flow *base,
1998 struct ofpbuf *odp_actions)
2000 struct ovs_key_ethernet eth_key;
2002 if (eth_addr_equals(base->dl_src, flow->dl_src) &&
2003 eth_addr_equals(base->dl_dst, flow->dl_dst)) {
2007 memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN);
2008 memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
2010 memcpy(eth_key.eth_src, base->dl_src, ETH_ADDR_LEN);
2011 memcpy(eth_key.eth_dst, base->dl_dst, ETH_ADDR_LEN);
2013 commit_set_action(odp_actions, OVS_KEY_ATTR_ETHERNET,
2014 ð_key, sizeof(eth_key));
2018 commit_vlan_action(const struct flow *flow, struct flow *base,
2019 struct ofpbuf *odp_actions)
2021 if (base->vlan_tci == flow->vlan_tci) {
2025 if (base->vlan_tci & htons(VLAN_CFI)) {
2026 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
2029 if (flow->vlan_tci & htons(VLAN_CFI)) {
2030 struct ovs_action_push_vlan vlan;
2032 vlan.vlan_tpid = htons(ETH_TYPE_VLAN);
2033 vlan.vlan_tci = flow->vlan_tci;
2034 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
2035 &vlan, sizeof vlan);
2037 base->vlan_tci = flow->vlan_tci;
2041 commit_set_ipv4_action(const struct flow *flow, struct flow *base,
2042 struct ofpbuf *odp_actions)
2044 struct ovs_key_ipv4 ipv4_key;
2046 if (base->nw_src == flow->nw_src &&
2047 base->nw_dst == flow->nw_dst &&
2048 base->nw_tos == flow->nw_tos &&
2049 base->nw_ttl == flow->nw_ttl &&
2050 base->nw_frag == flow->nw_frag) {
2054 ipv4_key.ipv4_src = base->nw_src = flow->nw_src;
2055 ipv4_key.ipv4_dst = base->nw_dst = flow->nw_dst;
2056 ipv4_key.ipv4_tos = base->nw_tos = flow->nw_tos;
2057 ipv4_key.ipv4_ttl = base->nw_ttl = flow->nw_ttl;
2058 ipv4_key.ipv4_proto = base->nw_proto;
2059 ipv4_key.ipv4_frag = ovs_to_odp_frag(base->nw_frag);
2061 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4,
2062 &ipv4_key, sizeof(ipv4_key));
2066 commit_set_ipv6_action(const struct flow *flow, struct flow *base,
2067 struct ofpbuf *odp_actions)
2069 struct ovs_key_ipv6 ipv6_key;
2071 if (ipv6_addr_equals(&base->ipv6_src, &flow->ipv6_src) &&
2072 ipv6_addr_equals(&base->ipv6_dst, &flow->ipv6_dst) &&
2073 base->ipv6_label == flow->ipv6_label &&
2074 base->nw_tos == flow->nw_tos &&
2075 base->nw_ttl == flow->nw_ttl &&
2076 base->nw_frag == flow->nw_frag) {
2080 base->ipv6_src = flow->ipv6_src;
2081 memcpy(&ipv6_key.ipv6_src, &base->ipv6_src, sizeof(ipv6_key.ipv6_src));
2082 base->ipv6_dst = flow->ipv6_dst;
2083 memcpy(&ipv6_key.ipv6_dst, &base->ipv6_dst, sizeof(ipv6_key.ipv6_dst));
2085 ipv6_key.ipv6_label = base->ipv6_label = flow->ipv6_label;
2086 ipv6_key.ipv6_tclass = base->nw_tos = flow->nw_tos;
2087 ipv6_key.ipv6_hlimit = base->nw_ttl = flow->nw_ttl;
2088 ipv6_key.ipv6_proto = base->nw_proto;
2089 ipv6_key.ipv6_frag = ovs_to_odp_frag(base->nw_frag);
2091 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV6,
2092 &ipv6_key, sizeof(ipv6_key));
2096 commit_set_nw_action(const struct flow *flow, struct flow *base,
2097 struct ofpbuf *odp_actions)
2099 /* Check if flow really have an IP header. */
2100 if (!flow->nw_proto) {
2104 if (base->dl_type == htons(ETH_TYPE_IP)) {
2105 commit_set_ipv4_action(flow, base, odp_actions);
2106 } else if (base->dl_type == htons(ETH_TYPE_IPV6)) {
2107 commit_set_ipv6_action(flow, base, odp_actions);
2112 commit_set_port_action(const struct flow *flow, struct flow *base,
2113 struct ofpbuf *odp_actions)
2115 if (!base->tp_src && !base->tp_dst) {
2119 if (base->tp_src == flow->tp_src &&
2120 base->tp_dst == flow->tp_dst) {
2124 if (flow->nw_proto == IPPROTO_TCP) {
2125 struct ovs_key_tcp port_key;
2127 port_key.tcp_src = base->tp_src = flow->tp_src;
2128 port_key.tcp_dst = base->tp_dst = flow->tp_dst;
2130 commit_set_action(odp_actions, OVS_KEY_ATTR_TCP,
2131 &port_key, sizeof(port_key));
2133 } else if (flow->nw_proto == IPPROTO_UDP) {
2134 struct ovs_key_udp port_key;
2136 port_key.udp_src = base->tp_src = flow->tp_src;
2137 port_key.udp_dst = base->tp_dst = flow->tp_dst;
2139 commit_set_action(odp_actions, OVS_KEY_ATTR_UDP,
2140 &port_key, sizeof(port_key));
2145 commit_set_priority_action(const struct flow *flow, struct flow *base,
2146 struct ofpbuf *odp_actions)
2148 if (base->skb_priority == flow->skb_priority) {
2151 base->skb_priority = flow->skb_priority;
2153 commit_set_action(odp_actions, OVS_KEY_ATTR_PRIORITY,
2154 &base->skb_priority, sizeof(base->skb_priority));
2158 commit_set_skb_mark_action(const struct flow *flow, struct flow *base,
2159 struct ofpbuf *odp_actions)
2161 if (base->skb_mark == flow->skb_mark) {
2164 base->skb_mark = flow->skb_mark;
2166 commit_set_action(odp_actions, OVS_KEY_ATTR_SKB_MARK,
2167 &base->skb_mark, sizeof(base->skb_mark));
2169 /* If any of the flow key data that ODP actions can modify are different in
2170 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
2171 * key from 'base' into 'flow', and then changes 'base' the same way. */
2173 commit_odp_actions(const struct flow *flow, struct flow *base,
2174 struct ofpbuf *odp_actions)
2176 commit_set_tun_id_action(flow, base, odp_actions);
2177 commit_set_ether_addr_action(flow, base, odp_actions);
2178 commit_vlan_action(flow, base, odp_actions);
2179 commit_set_nw_action(flow, base, odp_actions);
2180 commit_set_port_action(flow, base, odp_actions);
2181 commit_set_priority_action(flow, base, odp_actions);
2182 commit_set_skb_mark_action(flow, base, odp_actions);