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 "skb_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 parse_flags(const char *s, const char *(*bit_to_string)(uint32_t),
205 while (s[n] != ')') {
206 unsigned long long int flags;
210 if (sscanf(&s[n], "%lli%n", &flags, &n0) > 0 && n0 > 0) {
211 n += n0 + (s[n + n0] == ',');
216 for (bit = 1; bit; bit <<= 1) {
217 const char *name = bit_to_string(bit);
225 if (!strncmp(s + n, name, len) &&
226 (s[n + len] == ',' || s[n + len] == ')')) {
228 n += len + (s[n + len] == ',');
244 format_odp_userspace_action(struct ds *ds, const struct nlattr *attr)
246 static const struct nl_policy ovs_userspace_policy[] = {
247 [OVS_USERSPACE_ATTR_PID] = { .type = NL_A_U32 },
248 [OVS_USERSPACE_ATTR_USERDATA] = { .type = NL_A_U64, .optional = true },
250 struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)];
252 if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) {
253 ds_put_cstr(ds, "userspace(error)");
257 ds_put_format(ds, "userspace(pid=%"PRIu32,
258 nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID]));
260 if (a[OVS_USERSPACE_ATTR_USERDATA]) {
261 uint64_t userdata = nl_attr_get_u64(a[OVS_USERSPACE_ATTR_USERDATA]);
262 union user_action_cookie cookie;
264 memcpy(&cookie, &userdata, sizeof cookie);
266 switch (cookie.type) {
267 case USER_ACTION_COOKIE_SFLOW:
268 ds_put_format(ds, ",sFlow("
269 "vid=%"PRIu16",pcp=%"PRIu8",output=%"PRIu32")",
270 vlan_tci_to_vid(cookie.sflow.vlan_tci),
271 vlan_tci_to_pcp(cookie.sflow.vlan_tci),
272 cookie.sflow.output);
275 case USER_ACTION_COOKIE_SLOW_PATH:
276 ds_put_cstr(ds, ",slow_path(");
277 format_flags(ds, slow_path_reason_to_string,
278 cookie.slow_path.reason, ',');
279 ds_put_format(ds, ")");
282 case USER_ACTION_COOKIE_UNSPEC:
284 ds_put_format(ds, ",userdata=0x%"PRIx64, userdata);
289 ds_put_char(ds, ')');
293 format_vlan_tci(struct ds *ds, ovs_be16 vlan_tci)
295 ds_put_format(ds, "vid=%"PRIu16",pcp=%d",
296 vlan_tci_to_vid(vlan_tci),
297 vlan_tci_to_pcp(vlan_tci));
298 if (!(vlan_tci & htons(VLAN_CFI))) {
299 ds_put_cstr(ds, ",cfi=0");
304 format_odp_action(struct ds *ds, const struct nlattr *a)
307 enum ovs_action_attr type = nl_attr_type(a);
308 const struct ovs_action_push_vlan *vlan;
310 expected_len = odp_action_len(nl_attr_type(a));
311 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
312 ds_put_format(ds, "bad length %zu, expected %d for: ",
313 nl_attr_get_size(a), expected_len);
314 format_generic_odp_action(ds, a);
319 case OVS_ACTION_ATTR_OUTPUT:
320 ds_put_format(ds, "%"PRIu16, nl_attr_get_u32(a));
322 case OVS_ACTION_ATTR_USERSPACE:
323 format_odp_userspace_action(ds, a);
325 case OVS_ACTION_ATTR_SET:
326 ds_put_cstr(ds, "set(");
327 format_odp_key_attr(nl_attr_get(a), ds);
328 ds_put_cstr(ds, ")");
330 case OVS_ACTION_ATTR_PUSH_VLAN:
331 vlan = nl_attr_get(a);
332 ds_put_cstr(ds, "push_vlan(");
333 if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
334 ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
336 format_vlan_tci(ds, vlan->vlan_tci);
337 ds_put_char(ds, ')');
339 case OVS_ACTION_ATTR_POP_VLAN:
340 ds_put_cstr(ds, "pop_vlan");
342 case OVS_ACTION_ATTR_SAMPLE:
343 format_odp_sample_action(ds, a);
345 case OVS_ACTION_ATTR_UNSPEC:
346 case __OVS_ACTION_ATTR_MAX:
348 format_generic_odp_action(ds, a);
354 format_odp_actions(struct ds *ds, const struct nlattr *actions,
358 const struct nlattr *a;
361 NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
363 ds_put_char(ds, ',');
365 format_odp_action(ds, a);
370 if (left == actions_len) {
371 ds_put_cstr(ds, "<empty>");
373 ds_put_format(ds, ",***%u leftover bytes*** (", left);
374 for (i = 0; i < left; i++) {
375 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
377 ds_put_char(ds, ')');
380 ds_put_cstr(ds, "drop");
385 parse_odp_action(const char *s, const struct simap *port_names,
386 struct ofpbuf *actions)
388 /* Many of the sscanf calls in this function use oversized destination
389 * fields because some sscanf() implementations truncate the range of %i
390 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
391 * value of 0x7fff. The other alternatives are to allow only a single
392 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
395 * The tun_id parser has to use an alternative approach because there is no
396 * type larger than 64 bits. */
399 unsigned long long int port;
402 if (sscanf(s, "%lli%n", &port, &n) > 0 && n > 0) {
403 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port);
409 int len = strcspn(s, delimiters);
410 struct simap_node *node;
412 node = simap_find_len(port_names, s, len);
414 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, node->data);
420 unsigned long long int pid;
421 unsigned long long int output;
426 if (sscanf(s, "userspace(pid=%lli)%n", &pid, &n) > 0 && n > 0) {
427 odp_put_userspace_action(pid, NULL, actions);
429 } else if (sscanf(s, "userspace(pid=%lli,sFlow(vid=%i,"
430 "pcp=%i,output=%lli))%n",
431 &pid, &vid, &pcp, &output, &n) > 0 && n > 0) {
432 union user_action_cookie cookie;
435 tci = vid | (pcp << VLAN_PCP_SHIFT);
440 cookie.type = USER_ACTION_COOKIE_SFLOW;
441 cookie.sflow.vlan_tci = htons(tci);
442 cookie.sflow.output = output;
443 odp_put_userspace_action(pid, &cookie, actions);
445 } else if (sscanf(s, "userspace(pid=%lli,slow_path%n", &pid, &n) > 0
447 union user_action_cookie cookie;
450 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
451 cookie.slow_path.unused = 0;
452 cookie.slow_path.reason = 0;
454 res = parse_flags(&s[n], slow_path_reason_to_string,
455 &cookie.slow_path.reason);
465 odp_put_userspace_action(pid, &cookie, actions);
467 } else if (sscanf(s, "userspace(pid=%lli,userdata="
468 "%31[x0123456789abcdefABCDEF])%n", &pid, userdata_s,
470 union user_action_cookie cookie;
473 userdata = strtoull(userdata_s, NULL, 0);
474 memcpy(&cookie, &userdata, sizeof cookie);
475 odp_put_userspace_action(pid, &cookie, actions);
480 if (!strncmp(s, "set(", 4)) {
484 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET);
485 retval = parse_odp_key_attr(s + 4, port_names, actions);
489 if (s[retval + 4] != ')') {
492 nl_msg_end_nested(actions, start_ofs);
497 struct ovs_action_push_vlan push;
498 int tpid = ETH_TYPE_VLAN;
503 if ((sscanf(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n) > 0
505 || (sscanf(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n",
506 &vid, &pcp, &cfi, &n) > 0 && n > 0)
507 || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n",
508 &tpid, &vid, &pcp, &n) > 0 && n > 0)
509 || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n",
510 &tpid, &vid, &pcp, &cfi, &n) > 0 && n > 0)) {
511 push.vlan_tpid = htons(tpid);
512 push.vlan_tci = htons((vid << VLAN_VID_SHIFT)
513 | (pcp << VLAN_PCP_SHIFT)
514 | (cfi ? VLAN_CFI : 0));
515 nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN,
522 if (!strncmp(s, "pop_vlan", 8)) {
523 nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN);
531 if (sscanf(s, "sample(sample=%lf%%,actions(%n", &percentage, &n) > 0
532 && percentage >= 0. && percentage <= 100.0
534 size_t sample_ofs, actions_ofs;
537 probability = floor(UINT32_MAX * (percentage / 100.0) + .5);
538 sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE);
539 nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY,
540 (probability <= 0 ? 0
541 : probability >= UINT32_MAX ? UINT32_MAX
544 actions_ofs = nl_msg_start_nested(actions,
545 OVS_SAMPLE_ATTR_ACTIONS);
549 n += strspn(s + n, delimiters);
554 retval = parse_odp_action(s + n, port_names, actions);
560 nl_msg_end_nested(actions, actions_ofs);
561 nl_msg_end_nested(actions, sample_ofs);
563 return s[n + 1] == ')' ? n + 2 : -EINVAL;
570 /* Parses the string representation of datapath actions, in the format output
571 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
572 * value. On success, the ODP actions are appended to 'actions' as a series of
573 * Netlink attributes. On failure, no data is appended to 'actions'. Either
574 * way, 'actions''s data might be reallocated. */
576 odp_actions_from_string(const char *s, const struct simap *port_names,
577 struct ofpbuf *actions)
581 if (!strcasecmp(s, "drop")) {
585 old_size = actions->size;
589 s += strspn(s, delimiters);
594 retval = parse_odp_action(s, port_names, actions);
595 if (retval < 0 || !strchr(delimiters, s[retval])) {
596 actions->size = old_size;
605 /* Returns the correct length of the payload for a flow key attribute of the
606 * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload
607 * is variable length. */
609 odp_flow_key_attr_len(uint16_t type)
611 if (type > OVS_KEY_ATTR_MAX) {
615 switch ((enum ovs_key_attr) type) {
616 case OVS_KEY_ATTR_ENCAP: return -2;
617 case OVS_KEY_ATTR_PRIORITY: return 4;
618 case OVS_KEY_ATTR_SKB_MARK: return 4;
619 case OVS_KEY_ATTR_TUN_ID: return 8;
620 case OVS_KEY_ATTR_IPV4_TUNNEL: return sizeof(struct ovs_key_ipv4_tunnel);
621 case OVS_KEY_ATTR_IN_PORT: return 4;
622 case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet);
623 case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16);
624 case OVS_KEY_ATTR_ETHERTYPE: return 2;
625 case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4);
626 case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6);
627 case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp);
628 case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp);
629 case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp);
630 case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6);
631 case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp);
632 case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd);
634 case OVS_KEY_ATTR_UNSPEC:
635 case __OVS_KEY_ATTR_MAX:
643 format_generic_odp_key(const struct nlattr *a, struct ds *ds)
645 size_t len = nl_attr_get_size(a);
647 const uint8_t *unspec;
650 unspec = nl_attr_get(a);
651 for (i = 0; i < len; i++) {
652 ds_put_char(ds, i ? ' ': '(');
653 ds_put_format(ds, "%02x", unspec[i]);
655 ds_put_char(ds, ')');
660 ovs_frag_type_to_string(enum ovs_frag_type type)
663 case OVS_FRAG_TYPE_NONE:
665 case OVS_FRAG_TYPE_FIRST:
667 case OVS_FRAG_TYPE_LATER:
669 case __OVS_FRAG_TYPE_MAX:
676 odp_tun_flag_to_string(uint32_t flags)
679 case OVS_TNL_F_DONT_FRAGMENT:
691 format_odp_key_attr(const struct nlattr *a, struct ds *ds)
693 const struct ovs_key_ethernet *eth_key;
694 const struct ovs_key_ipv4 *ipv4_key;
695 const struct ovs_key_ipv6 *ipv6_key;
696 const struct ovs_key_tcp *tcp_key;
697 const struct ovs_key_udp *udp_key;
698 const struct ovs_key_icmp *icmp_key;
699 const struct ovs_key_icmpv6 *icmpv6_key;
700 const struct ovs_key_arp *arp_key;
701 const struct ovs_key_nd *nd_key;
702 const struct ovs_key_ipv4_tunnel *ipv4_tun_key;
703 enum ovs_key_attr attr = nl_attr_type(a);
706 ds_put_cstr(ds, ovs_key_attr_to_string(attr));
707 expected_len = odp_flow_key_attr_len(nl_attr_type(a));
708 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
709 ds_put_format(ds, "(bad length %zu, expected %d)",
711 odp_flow_key_attr_len(nl_attr_type(a)));
712 format_generic_odp_key(a, ds);
717 case OVS_KEY_ATTR_ENCAP:
718 ds_put_cstr(ds, "(");
719 if (nl_attr_get_size(a)) {
720 odp_flow_key_format(nl_attr_get(a), nl_attr_get_size(a), ds);
722 ds_put_char(ds, ')');
725 case OVS_KEY_ATTR_PRIORITY:
726 ds_put_format(ds, "(%#"PRIx32")", nl_attr_get_u32(a));
729 case OVS_KEY_ATTR_SKB_MARK:
730 ds_put_format(ds, "(%#"PRIx32")", nl_attr_get_u32(a));
733 case OVS_KEY_ATTR_TUN_ID:
734 ds_put_format(ds, "(%#"PRIx64")", ntohll(nl_attr_get_be64(a)));
737 case OVS_KEY_ATTR_IPV4_TUNNEL:
738 ipv4_tun_key = nl_attr_get(a);
739 ds_put_format(ds, "(tun_id=0x%"PRIx64",src="IP_FMT",dst="IP_FMT","
740 "tos=0x%"PRIx8",ttl=%"PRIu8",flags(",
741 ntohll(ipv4_tun_key->tun_id),
742 IP_ARGS(ipv4_tun_key->ipv4_src),
743 IP_ARGS(ipv4_tun_key->ipv4_dst),
744 ipv4_tun_key->ipv4_tos, ipv4_tun_key->ipv4_ttl);
746 format_flags(ds, odp_tun_flag_to_string,
747 ipv4_tun_key->tun_flags, ',');
748 ds_put_format(ds, "))");
751 case OVS_KEY_ATTR_IN_PORT:
752 ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a));
755 case OVS_KEY_ATTR_ETHERNET:
756 eth_key = nl_attr_get(a);
757 ds_put_format(ds, "(src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT")",
758 ETH_ADDR_ARGS(eth_key->eth_src),
759 ETH_ADDR_ARGS(eth_key->eth_dst));
762 case OVS_KEY_ATTR_VLAN:
763 ds_put_char(ds, '(');
764 format_vlan_tci(ds, nl_attr_get_be16(a));
765 ds_put_char(ds, ')');
768 case OVS_KEY_ATTR_ETHERTYPE:
769 ds_put_format(ds, "(0x%04"PRIx16")",
770 ntohs(nl_attr_get_be16(a)));
773 case OVS_KEY_ATTR_IPV4:
774 ipv4_key = nl_attr_get(a);
775 ds_put_format(ds, "(src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
776 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s)",
777 IP_ARGS(ipv4_key->ipv4_src),
778 IP_ARGS(ipv4_key->ipv4_dst),
779 ipv4_key->ipv4_proto, ipv4_key->ipv4_tos,
781 ovs_frag_type_to_string(ipv4_key->ipv4_frag));
784 case OVS_KEY_ATTR_IPV6: {
785 char src_str[INET6_ADDRSTRLEN];
786 char dst_str[INET6_ADDRSTRLEN];
788 ipv6_key = nl_attr_get(a);
789 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
790 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
792 ds_put_format(ds, "(src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8
793 ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s)",
794 src_str, dst_str, ntohl(ipv6_key->ipv6_label),
795 ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass,
796 ipv6_key->ipv6_hlimit,
797 ovs_frag_type_to_string(ipv6_key->ipv6_frag));
801 case OVS_KEY_ATTR_TCP:
802 tcp_key = nl_attr_get(a);
803 ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
804 ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst));
807 case OVS_KEY_ATTR_UDP:
808 udp_key = nl_attr_get(a);
809 ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
810 ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst));
813 case OVS_KEY_ATTR_ICMP:
814 icmp_key = nl_attr_get(a);
815 ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")",
816 icmp_key->icmp_type, icmp_key->icmp_code);
819 case OVS_KEY_ATTR_ICMPV6:
820 icmpv6_key = nl_attr_get(a);
821 ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")",
822 icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code);
825 case OVS_KEY_ATTR_ARP:
826 arp_key = nl_attr_get(a);
827 ds_put_format(ds, "(sip="IP_FMT",tip="IP_FMT",op=%"PRIu16","
828 "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT")",
829 IP_ARGS(arp_key->arp_sip), IP_ARGS(arp_key->arp_tip),
830 ntohs(arp_key->arp_op), ETH_ADDR_ARGS(arp_key->arp_sha),
831 ETH_ADDR_ARGS(arp_key->arp_tha));
834 case OVS_KEY_ATTR_ND: {
835 char target[INET6_ADDRSTRLEN];
837 nd_key = nl_attr_get(a);
838 inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target);
840 ds_put_format(ds, "(target=%s", target);
841 if (!eth_addr_is_zero(nd_key->nd_sll)) {
842 ds_put_format(ds, ",sll="ETH_ADDR_FMT,
843 ETH_ADDR_ARGS(nd_key->nd_sll));
845 if (!eth_addr_is_zero(nd_key->nd_tll)) {
846 ds_put_format(ds, ",tll="ETH_ADDR_FMT,
847 ETH_ADDR_ARGS(nd_key->nd_tll));
849 ds_put_char(ds, ')');
853 case OVS_KEY_ATTR_UNSPEC:
854 case __OVS_KEY_ATTR_MAX:
856 format_generic_odp_key(a, ds);
861 /* Appends to 'ds' a string representation of the 'key_len' bytes of
862 * OVS_KEY_ATTR_* attributes in 'key'. */
864 odp_flow_key_format(const struct nlattr *key, size_t key_len, struct ds *ds)
867 const struct nlattr *a;
870 NL_ATTR_FOR_EACH (a, left, key, key_len) {
872 ds_put_char(ds, ',');
874 format_odp_key_attr(a, ds);
879 if (left == key_len) {
880 ds_put_cstr(ds, "<empty>");
882 ds_put_format(ds, ",***%u leftover bytes*** (", left);
883 for (i = 0; i < left; i++) {
884 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
886 ds_put_char(ds, ')');
889 ds_put_cstr(ds, "<empty>");
894 put_nd_key(int n, const char *nd_target_s,
895 const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *key)
897 struct ovs_key_nd nd_key;
899 memset(&nd_key, 0, sizeof nd_key);
900 if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
904 memcpy(nd_key.nd_sll, nd_sll, ETH_ADDR_LEN);
907 memcpy(nd_key.nd_tll, nd_tll, ETH_ADDR_LEN);
909 nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, &nd_key, sizeof nd_key);
914 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
916 if (!strcasecmp(s, "no")) {
917 *type = OVS_FRAG_TYPE_NONE;
918 } else if (!strcasecmp(s, "first")) {
919 *type = OVS_FRAG_TYPE_FIRST;
920 } else if (!strcasecmp(s, "later")) {
921 *type = OVS_FRAG_TYPE_LATER;
929 parse_odp_key_attr(const char *s, const struct simap *port_names,
932 /* Many of the sscanf calls in this function use oversized destination
933 * fields because some sscanf() implementations truncate the range of %i
934 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
935 * value of 0x7fff. The other alternatives are to allow only a single
936 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
939 * The tun_id parser has to use an alternative approach because there is no
940 * type larger than 64 bits. */
943 unsigned long long int priority;
946 if (sscanf(s, "skb_priority(%llx)%n", &priority, &n) > 0 && n > 0) {
947 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
953 unsigned long long int mark;
956 if (sscanf(s, "skb_mark(%llx)%n", &mark, &n) > 0 && n > 0) {
957 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
966 if (sscanf(s, "tun_id(%31[x0123456789abcdefABCDEF])%n",
967 tun_id_s, &n) > 0 && n > 0) {
968 uint64_t tun_id = strtoull(tun_id_s, NULL, 0);
969 nl_msg_put_be64(key, OVS_KEY_ATTR_TUN_ID, htonll(tun_id));
977 struct ovs_key_ipv4_tunnel tun_key;
980 if (sscanf(s, "ipv4_tunnel(tun_id=%31[x0123456789abcdefABCDEF],"
981 "src="IP_SCAN_FMT",dst="IP_SCAN_FMT
982 ",tos=%i,ttl=%i,flags%n", tun_id_s,
983 IP_SCAN_ARGS(&tun_key.ipv4_src),
984 IP_SCAN_ARGS(&tun_key.ipv4_dst), &tos, &ttl,
988 tun_key.tun_id = htonll(strtoull(tun_id_s, NULL, 0));
989 tun_key.ipv4_tos = tos;
990 tun_key.ipv4_ttl = ttl;
992 res = parse_flags(&s[n], odp_tun_flag_to_string,
1003 memset(&tun_key.pad, 0, sizeof tun_key.pad);
1004 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4_TUNNEL, &tun_key,
1011 unsigned long long int in_port;
1014 if (sscanf(s, "in_port(%lli)%n", &in_port, &n) > 0 && n > 0) {
1015 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1020 if (port_names && !strncmp(s, "in_port(", 8)) {
1022 const struct simap_node *node;
1026 name_len = strcspn(s, ")");
1027 node = simap_find_len(port_names, name, name_len);
1029 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, node->data);
1030 return 8 + name_len + 1;
1035 struct ovs_key_ethernet eth_key;
1039 "eth(src="ETH_ADDR_SCAN_FMT",dst="ETH_ADDR_SCAN_FMT")%n",
1040 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1041 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n) > 0 && n > 0) {
1042 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1043 ð_key, sizeof eth_key);
1054 if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i)%n", &vid, &pcp, &n) > 0
1056 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1057 htons((vid << VLAN_VID_SHIFT) |
1058 (pcp << VLAN_PCP_SHIFT) |
1061 } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i,cfi=%i)%n",
1062 &vid, &pcp, &cfi, &n) > 0
1064 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1065 htons((vid << VLAN_VID_SHIFT) |
1066 (pcp << VLAN_PCP_SHIFT) |
1067 (cfi ? VLAN_CFI : 0)));
1076 if (sscanf(s, "eth_type(%i)%n", ð_type, &n) > 0 && n > 0) {
1077 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1089 enum ovs_frag_type ipv4_frag;
1092 if (sscanf(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
1093 "proto=%i,tos=%i,ttl=%i,frag=%7[a-z])%n",
1094 IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_dst),
1095 &ipv4_proto, &ipv4_tos, &ipv4_ttl, frag, &n) > 0
1097 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1098 struct ovs_key_ipv4 ipv4_key;
1100 ipv4_key.ipv4_src = ipv4_src;
1101 ipv4_key.ipv4_dst = ipv4_dst;
1102 ipv4_key.ipv4_proto = ipv4_proto;
1103 ipv4_key.ipv4_tos = ipv4_tos;
1104 ipv4_key.ipv4_ttl = ipv4_ttl;
1105 ipv4_key.ipv4_frag = ipv4_frag;
1106 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1107 &ipv4_key, sizeof ipv4_key);
1113 char ipv6_src_s[IPV6_SCAN_LEN + 1];
1114 char ipv6_dst_s[IPV6_SCAN_LEN + 1];
1120 enum ovs_frag_type ipv6_frag;
1123 if (sscanf(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
1124 "label=%i,proto=%i,tclass=%i,hlimit=%i,frag=%7[a-z])%n",
1125 ipv6_src_s, ipv6_dst_s, &ipv6_label,
1126 &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n) > 0
1128 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
1129 struct ovs_key_ipv6 ipv6_key;
1131 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
1132 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
1135 ipv6_key.ipv6_label = htonl(ipv6_label);
1136 ipv6_key.ipv6_proto = ipv6_proto;
1137 ipv6_key.ipv6_tclass = ipv6_tclass;
1138 ipv6_key.ipv6_hlimit = ipv6_hlimit;
1139 ipv6_key.ipv6_frag = ipv6_frag;
1140 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
1141 &ipv6_key, sizeof ipv6_key);
1151 if (sscanf(s, "tcp(src=%i,dst=%i)%n",&tcp_src, &tcp_dst, &n) > 0
1153 struct ovs_key_tcp tcp_key;
1155 tcp_key.tcp_src = htons(tcp_src);
1156 tcp_key.tcp_dst = htons(tcp_dst);
1157 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
1167 if (sscanf(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n) > 0
1169 struct ovs_key_udp udp_key;
1171 udp_key.udp_src = htons(udp_src);
1172 udp_key.udp_dst = htons(udp_dst);
1173 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
1183 if (sscanf(s, "icmp(type=%i,code=%i)%n",
1184 &icmp_type, &icmp_code, &n) > 0
1186 struct ovs_key_icmp icmp_key;
1188 icmp_key.icmp_type = icmp_type;
1189 icmp_key.icmp_code = icmp_code;
1190 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
1191 &icmp_key, sizeof icmp_key);
1197 struct ovs_key_icmpv6 icmpv6_key;
1200 if (sscanf(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
1201 &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,&n) > 0
1203 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
1204 &icmpv6_key, sizeof icmpv6_key);
1213 uint8_t arp_sha[ETH_ADDR_LEN];
1214 uint8_t arp_tha[ETH_ADDR_LEN];
1217 if (sscanf(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
1218 "op=%i,sha="ETH_ADDR_SCAN_FMT",tha="ETH_ADDR_SCAN_FMT")%n",
1219 IP_SCAN_ARGS(&arp_sip),
1220 IP_SCAN_ARGS(&arp_tip),
1222 ETH_ADDR_SCAN_ARGS(arp_sha),
1223 ETH_ADDR_SCAN_ARGS(arp_tha), &n) > 0 && n > 0) {
1224 struct ovs_key_arp arp_key;
1226 memset(&arp_key, 0, sizeof arp_key);
1227 arp_key.arp_sip = arp_sip;
1228 arp_key.arp_tip = arp_tip;
1229 arp_key.arp_op = htons(arp_op);
1230 memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
1231 memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
1232 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
1238 char nd_target_s[IPV6_SCAN_LEN + 1];
1239 uint8_t nd_sll[ETH_ADDR_LEN];
1240 uint8_t nd_tll[ETH_ADDR_LEN];
1243 if (sscanf(s, "nd(target="IPV6_SCAN_FMT")%n",
1244 nd_target_s, &n) > 0 && n > 0) {
1245 return put_nd_key(n, nd_target_s, NULL, NULL, key);
1247 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT")%n",
1248 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n) > 0
1250 return put_nd_key(n, nd_target_s, nd_sll, NULL, key);
1252 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",tll="ETH_ADDR_SCAN_FMT")%n",
1253 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
1255 return put_nd_key(n, nd_target_s, NULL, nd_tll, key);
1257 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT","
1258 "tll="ETH_ADDR_SCAN_FMT")%n",
1259 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
1260 ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
1262 return put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
1266 if (!strncmp(s, "encap(", 6)) {
1267 const char *start = s;
1270 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
1276 s += strspn(s, ", \t\r\n");
1279 } else if (*s == ')') {
1283 retval = parse_odp_key_attr(s, port_names, key);
1291 nl_msg_end_nested(key, encap);
1299 /* Parses the string representation of a datapath flow key, in the
1300 * format output by odp_flow_key_format(). Returns 0 if successful,
1301 * otherwise a positive errno value. On success, the flow key is
1302 * appended to 'key' as a series of Netlink attributes. On failure, no
1303 * data is appended to 'key'. Either way, 'key''s data might be
1306 * If 'port_names' is nonnull, it points to an simap that maps from a port name
1307 * to a port number. (Port names may be used instead of port numbers in
1310 * On success, the attributes appended to 'key' are individually syntactically
1311 * valid, but they may not be valid as a sequence. 'key' might, for example,
1312 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
1314 odp_flow_key_from_string(const char *s, const struct simap *port_names,
1317 const size_t old_size = key->size;
1321 s += strspn(s, delimiters);
1326 retval = parse_odp_key_attr(s, port_names, key);
1328 key->size = old_size;
1338 ovs_to_odp_frag(uint8_t nw_frag)
1340 return (nw_frag == 0 ? OVS_FRAG_TYPE_NONE
1341 : nw_frag == FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST
1342 : OVS_FRAG_TYPE_LATER);
1345 /* The set of kernel flags we understand. Used to detect if ODP_FIT_TOO_MUCH */
1346 #define OVS_TNL_F_KNOWN_MASK \
1347 (OVS_TNL_F_DONT_FRAGMENT | OVS_TNL_F_CSUM | OVS_TNL_F_KEY)
1349 /* These allow the flow/kernel view of the flags to change in future */
1351 flow_to_odp_flags(uint16_t flags)
1353 return (flags & FLOW_TNL_F_DONT_FRAGMENT ? OVS_TNL_F_DONT_FRAGMENT : 0)
1354 | (flags & FLOW_TNL_F_CSUM ? OVS_TNL_F_CSUM : 0)
1355 | (flags & FLOW_TNL_F_KEY ? OVS_TNL_F_KEY : 0);
1359 odp_to_flow_flags(uint32_t tun_flags)
1361 return (tun_flags & OVS_TNL_F_DONT_FRAGMENT ? FLOW_TNL_F_DONT_FRAGMENT : 0)
1362 | (tun_flags & OVS_TNL_F_CSUM ? FLOW_TNL_F_CSUM : 0)
1363 | (tun_flags & OVS_TNL_F_KEY ? FLOW_TNL_F_KEY : 0);
1366 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
1367 * 'flow->in_port' is ignored (since it is likely to be an OpenFlow port
1368 * number rather than a datapath port number). Instead, if 'odp_in_port'
1369 * is anything other than OVSP_NONE, it is included in 'buf' as the input
1372 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
1373 * capable of being expanded to allow for that much space. */
1375 odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow,
1376 uint32_t odp_in_port)
1378 struct ovs_key_ethernet *eth_key;
1381 if (flow->skb_priority) {
1382 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, flow->skb_priority);
1385 if (flow->tunnel.ip_dst) {
1386 struct ovs_key_ipv4_tunnel *ipv4_tun_key;
1388 ipv4_tun_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4_TUNNEL,
1389 sizeof *ipv4_tun_key);
1390 /* layouts differ, flags has different size */
1391 ipv4_tun_key->tun_id = flow->tunnel.tun_id;
1392 ipv4_tun_key->tun_flags = flow_to_odp_flags(flow->tunnel.flags);
1393 ipv4_tun_key->ipv4_src = flow->tunnel.ip_src;
1394 ipv4_tun_key->ipv4_dst = flow->tunnel.ip_dst;
1395 ipv4_tun_key->ipv4_tos = flow->tunnel.ip_tos;
1396 ipv4_tun_key->ipv4_ttl = flow->tunnel.ip_ttl;
1397 memset(ipv4_tun_key->pad, 0, sizeof ipv4_tun_key->pad);
1398 } else if (flow->tunnel.tun_id != htonll(0)) {
1399 nl_msg_put_be64(buf, OVS_KEY_ATTR_TUN_ID, flow->tunnel.tun_id);
1402 if (flow->skb_mark) {
1403 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, flow->skb_mark);
1406 if (odp_in_port != OVSP_NONE) {
1407 nl_msg_put_u32(buf, OVS_KEY_ATTR_IN_PORT, odp_in_port);
1410 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
1412 memcpy(eth_key->eth_src, flow->dl_src, ETH_ADDR_LEN);
1413 memcpy(eth_key->eth_dst, flow->dl_dst, ETH_ADDR_LEN);
1415 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
1416 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
1417 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, flow->vlan_tci);
1418 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
1419 if (flow->vlan_tci == htons(0)) {
1426 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
1430 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, flow->dl_type);
1432 if (flow->dl_type == htons(ETH_TYPE_IP)) {
1433 struct ovs_key_ipv4 *ipv4_key;
1435 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
1437 ipv4_key->ipv4_src = flow->nw_src;
1438 ipv4_key->ipv4_dst = flow->nw_dst;
1439 ipv4_key->ipv4_proto = flow->nw_proto;
1440 ipv4_key->ipv4_tos = flow->nw_tos;
1441 ipv4_key->ipv4_ttl = flow->nw_ttl;
1442 ipv4_key->ipv4_frag = ovs_to_odp_frag(flow->nw_frag);
1443 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
1444 struct ovs_key_ipv6 *ipv6_key;
1446 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
1448 memcpy(ipv6_key->ipv6_src, &flow->ipv6_src, sizeof ipv6_key->ipv6_src);
1449 memcpy(ipv6_key->ipv6_dst, &flow->ipv6_dst, sizeof ipv6_key->ipv6_dst);
1450 ipv6_key->ipv6_label = flow->ipv6_label;
1451 ipv6_key->ipv6_proto = flow->nw_proto;
1452 ipv6_key->ipv6_tclass = flow->nw_tos;
1453 ipv6_key->ipv6_hlimit = flow->nw_ttl;
1454 ipv6_key->ipv6_frag = ovs_to_odp_frag(flow->nw_frag);
1455 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
1456 flow->dl_type == htons(ETH_TYPE_RARP)) {
1457 struct ovs_key_arp *arp_key;
1459 arp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ARP,
1461 memset(arp_key, 0, sizeof *arp_key);
1462 arp_key->arp_sip = flow->nw_src;
1463 arp_key->arp_tip = flow->nw_dst;
1464 arp_key->arp_op = htons(flow->nw_proto);
1465 memcpy(arp_key->arp_sha, flow->arp_sha, ETH_ADDR_LEN);
1466 memcpy(arp_key->arp_tha, flow->arp_tha, ETH_ADDR_LEN);
1469 if ((flow->dl_type == htons(ETH_TYPE_IP)
1470 || flow->dl_type == htons(ETH_TYPE_IPV6))
1471 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1473 if (flow->nw_proto == IPPROTO_TCP) {
1474 struct ovs_key_tcp *tcp_key;
1476 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
1478 tcp_key->tcp_src = flow->tp_src;
1479 tcp_key->tcp_dst = flow->tp_dst;
1480 } else if (flow->nw_proto == IPPROTO_UDP) {
1481 struct ovs_key_udp *udp_key;
1483 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
1485 udp_key->udp_src = flow->tp_src;
1486 udp_key->udp_dst = flow->tp_dst;
1487 } else if (flow->dl_type == htons(ETH_TYPE_IP)
1488 && flow->nw_proto == IPPROTO_ICMP) {
1489 struct ovs_key_icmp *icmp_key;
1491 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
1493 icmp_key->icmp_type = ntohs(flow->tp_src);
1494 icmp_key->icmp_code = ntohs(flow->tp_dst);
1495 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
1496 && flow->nw_proto == IPPROTO_ICMPV6) {
1497 struct ovs_key_icmpv6 *icmpv6_key;
1499 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
1500 sizeof *icmpv6_key);
1501 icmpv6_key->icmpv6_type = ntohs(flow->tp_src);
1502 icmpv6_key->icmpv6_code = ntohs(flow->tp_dst);
1504 if (icmpv6_key->icmpv6_type == ND_NEIGHBOR_SOLICIT
1505 || icmpv6_key->icmpv6_type == ND_NEIGHBOR_ADVERT) {
1506 struct ovs_key_nd *nd_key;
1508 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
1510 memcpy(nd_key->nd_target, &flow->nd_target,
1511 sizeof nd_key->nd_target);
1512 memcpy(nd_key->nd_sll, flow->arp_sha, ETH_ADDR_LEN);
1513 memcpy(nd_key->nd_tll, flow->arp_tha, ETH_ADDR_LEN);
1520 nl_msg_end_nested(buf, encap);
1525 odp_flow_key_hash(const struct nlattr *key, size_t key_len)
1527 BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t)));
1528 return hash_words((const uint32_t *) key, key_len / sizeof(uint32_t), 0);
1532 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
1533 uint64_t attrs, int out_of_range_attr,
1534 const struct nlattr *key, size_t key_len)
1539 if (VLOG_DROP_DBG(rl)) {
1544 for (i = 0; i < 64; i++) {
1545 if (attrs & (UINT64_C(1) << i)) {
1546 ds_put_format(&s, " %s", ovs_key_attr_to_string(i));
1549 if (out_of_range_attr) {
1550 ds_put_format(&s, " %d (and possibly others)", out_of_range_attr);
1553 ds_put_cstr(&s, ": ");
1554 odp_flow_key_format(key, key_len, &s);
1556 VLOG_DBG("%s:%s", title, ds_cstr(&s));
1561 odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow)
1563 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1565 if (odp_frag > OVS_FRAG_TYPE_LATER) {
1566 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag);
1570 if (odp_frag != OVS_FRAG_TYPE_NONE) {
1571 flow->nw_frag |= FLOW_NW_FRAG_ANY;
1572 if (odp_frag == OVS_FRAG_TYPE_LATER) {
1573 flow->nw_frag |= FLOW_NW_FRAG_LATER;
1580 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
1581 const struct nlattr *attrs[], uint64_t *present_attrsp,
1582 int *out_of_range_attrp)
1584 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
1585 const struct nlattr *nla;
1586 uint64_t present_attrs;
1590 *out_of_range_attrp = 0;
1591 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
1592 uint16_t type = nl_attr_type(nla);
1593 size_t len = nl_attr_get_size(nla);
1594 int expected_len = odp_flow_key_attr_len(type);
1596 if (len != expected_len && expected_len >= 0) {
1597 VLOG_ERR_RL(&rl, "attribute %s has length %zu but should have "
1598 "length %d", ovs_key_attr_to_string(type),
1603 if (type >= CHAR_BIT * sizeof present_attrs) {
1604 *out_of_range_attrp = type;
1606 if (present_attrs & (UINT64_C(1) << type)) {
1607 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
1608 ovs_key_attr_to_string(type));
1612 present_attrs |= UINT64_C(1) << type;
1617 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
1621 *present_attrsp = present_attrs;
1625 static enum odp_key_fitness
1626 check_expectations(uint64_t present_attrs, int out_of_range_attr,
1627 uint64_t expected_attrs,
1628 const struct nlattr *key, size_t key_len)
1630 uint64_t missing_attrs;
1631 uint64_t extra_attrs;
1633 missing_attrs = expected_attrs & ~present_attrs;
1634 if (missing_attrs) {
1635 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
1636 log_odp_key_attributes(&rl, "expected but not present",
1637 missing_attrs, 0, key, key_len);
1638 return ODP_FIT_TOO_LITTLE;
1641 extra_attrs = present_attrs & ~expected_attrs;
1642 if (extra_attrs || out_of_range_attr) {
1643 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
1644 log_odp_key_attributes(&rl, "present but not expected",
1645 extra_attrs, out_of_range_attr, key, key_len);
1646 return ODP_FIT_TOO_MUCH;
1649 return ODP_FIT_PERFECT;
1653 parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
1654 uint64_t present_attrs, uint64_t *expected_attrs,
1657 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1659 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
1660 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
1661 if (ntohs(flow->dl_type) < 1536) {
1662 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
1663 ntohs(flow->dl_type));
1666 *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
1668 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
1673 static enum odp_key_fitness
1674 parse_l3_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
1675 uint64_t present_attrs, int out_of_range_attr,
1676 uint64_t expected_attrs, struct flow *flow,
1677 const struct nlattr *key, size_t key_len)
1679 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1681 if (flow->dl_type == htons(ETH_TYPE_IP)) {
1682 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
1683 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
1684 const struct ovs_key_ipv4 *ipv4_key;
1686 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
1687 flow->nw_src = ipv4_key->ipv4_src;
1688 flow->nw_dst = ipv4_key->ipv4_dst;
1689 flow->nw_proto = ipv4_key->ipv4_proto;
1690 flow->nw_tos = ipv4_key->ipv4_tos;
1691 flow->nw_ttl = ipv4_key->ipv4_ttl;
1692 if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) {
1693 return ODP_FIT_ERROR;
1696 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
1697 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
1698 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
1699 const struct ovs_key_ipv6 *ipv6_key;
1701 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
1702 memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src);
1703 memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst);
1704 flow->ipv6_label = ipv6_key->ipv6_label;
1705 flow->nw_proto = ipv6_key->ipv6_proto;
1706 flow->nw_tos = ipv6_key->ipv6_tclass;
1707 flow->nw_ttl = ipv6_key->ipv6_hlimit;
1708 if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) {
1709 return ODP_FIT_ERROR;
1712 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
1713 flow->dl_type == htons(ETH_TYPE_RARP)) {
1714 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
1715 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
1716 const struct ovs_key_arp *arp_key;
1718 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
1719 flow->nw_src = arp_key->arp_sip;
1720 flow->nw_dst = arp_key->arp_tip;
1721 if (arp_key->arp_op & htons(0xff00)) {
1722 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
1723 "key", ntohs(arp_key->arp_op));
1724 return ODP_FIT_ERROR;
1726 flow->nw_proto = ntohs(arp_key->arp_op);
1727 memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN);
1728 memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN);
1732 if (flow->nw_proto == IPPROTO_TCP
1733 && (flow->dl_type == htons(ETH_TYPE_IP) ||
1734 flow->dl_type == htons(ETH_TYPE_IPV6))
1735 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1736 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
1737 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
1738 const struct ovs_key_tcp *tcp_key;
1740 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
1741 flow->tp_src = tcp_key->tcp_src;
1742 flow->tp_dst = tcp_key->tcp_dst;
1744 } else if (flow->nw_proto == IPPROTO_UDP
1745 && (flow->dl_type == htons(ETH_TYPE_IP) ||
1746 flow->dl_type == htons(ETH_TYPE_IPV6))
1747 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1748 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
1749 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
1750 const struct ovs_key_udp *udp_key;
1752 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
1753 flow->tp_src = udp_key->udp_src;
1754 flow->tp_dst = udp_key->udp_dst;
1756 } else if (flow->nw_proto == IPPROTO_ICMP
1757 && flow->dl_type == htons(ETH_TYPE_IP)
1758 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1759 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
1760 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
1761 const struct ovs_key_icmp *icmp_key;
1763 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
1764 flow->tp_src = htons(icmp_key->icmp_type);
1765 flow->tp_dst = htons(icmp_key->icmp_code);
1767 } else if (flow->nw_proto == IPPROTO_ICMPV6
1768 && flow->dl_type == htons(ETH_TYPE_IPV6)
1769 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1770 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
1771 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
1772 const struct ovs_key_icmpv6 *icmpv6_key;
1774 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
1775 flow->tp_src = htons(icmpv6_key->icmpv6_type);
1776 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
1778 if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
1779 flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) {
1780 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
1781 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
1782 const struct ovs_key_nd *nd_key;
1784 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
1785 memcpy(&flow->nd_target, nd_key->nd_target,
1786 sizeof flow->nd_target);
1787 memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN);
1788 memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN);
1794 return check_expectations(present_attrs, out_of_range_attr, expected_attrs,
1798 /* Parse 802.1Q header then encapsulated L3 attributes. */
1799 static enum odp_key_fitness
1800 parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
1801 uint64_t present_attrs, int out_of_range_attr,
1802 uint64_t expected_attrs, struct flow *flow,
1803 const struct nlattr *key, size_t key_len)
1805 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1807 const struct nlattr *encap
1808 = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)
1809 ? attrs[OVS_KEY_ATTR_ENCAP] : NULL);
1810 enum odp_key_fitness encap_fitness;
1811 enum odp_key_fitness fitness;
1814 /* Calulate fitness of outer attributes. */
1815 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
1816 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
1817 fitness = check_expectations(present_attrs, out_of_range_attr,
1818 expected_attrs, key, key_len);
1820 /* Get the VLAN TCI value. */
1821 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) {
1822 return ODP_FIT_TOO_LITTLE;
1824 tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
1825 if (tci == htons(0)) {
1826 /* Corner case for a truncated 802.1Q header. */
1827 if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) {
1828 return ODP_FIT_TOO_MUCH;
1831 } else if (!(tci & htons(VLAN_CFI))) {
1832 VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero "
1833 "but CFI bit is not set", ntohs(tci));
1834 return ODP_FIT_ERROR;
1838 * Remove the TPID from dl_type since it's not the real Ethertype. */
1839 flow->vlan_tci = tci;
1840 flow->dl_type = htons(0);
1842 /* Now parse the encapsulated attributes. */
1843 if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
1844 attrs, &present_attrs, &out_of_range_attr)) {
1845 return ODP_FIT_ERROR;
1849 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) {
1850 return ODP_FIT_ERROR;
1852 encap_fitness = parse_l3_onward(attrs, present_attrs, out_of_range_attr,
1853 expected_attrs, flow, key, key_len);
1855 /* The overall fitness is the worse of the outer and inner attributes. */
1856 return MAX(fitness, encap_fitness);
1859 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
1860 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
1861 * 'key' fits our expectations for what a flow key should contain.
1863 * The 'in_port' will be the datapath's understanding of the port. The
1864 * caller will need to translate with odp_port_to_ofp_port() if the
1865 * OpenFlow port is needed.
1867 * This function doesn't take the packet itself as an argument because none of
1868 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
1869 * it is always possible to infer which additional attribute(s) should appear
1870 * by looking at the attributes for lower-level protocols, e.g. if the network
1871 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
1872 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
1873 * must be absent. */
1874 enum odp_key_fitness
1875 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
1878 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
1879 uint64_t expected_attrs;
1880 uint64_t present_attrs;
1881 int out_of_range_attr;
1883 memset(flow, 0, sizeof *flow);
1885 /* Parse attributes. */
1886 if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs,
1887 &out_of_range_attr)) {
1888 return ODP_FIT_ERROR;
1893 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
1894 flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
1895 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
1898 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK)) {
1899 flow->skb_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_SKB_MARK]);
1900 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK;
1903 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUN_ID)) {
1904 flow->tunnel.tun_id = nl_attr_get_be64(attrs[OVS_KEY_ATTR_TUN_ID]);
1905 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUN_ID;
1908 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4_TUNNEL)) {
1909 const struct ovs_key_ipv4_tunnel *ipv4_tun_key;
1911 ipv4_tun_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4_TUNNEL]);
1913 flow->tunnel.tun_id = ipv4_tun_key->tun_id;
1914 flow->tunnel.ip_src = ipv4_tun_key->ipv4_src;
1915 flow->tunnel.ip_dst = ipv4_tun_key->ipv4_dst;
1916 flow->tunnel.flags = odp_to_flow_flags(ipv4_tun_key->tun_flags);
1917 flow->tunnel.ip_tos = ipv4_tun_key->ipv4_tos;
1918 flow->tunnel.ip_ttl = ipv4_tun_key->ipv4_ttl;
1920 /* Allow this to show up as unexpected, if there are unknown flags,
1921 * eventually resulting in ODP_FIT_TOO_MUCH.
1922 * OVS_TNL_F_KNOWN_MASK defined locally above. */
1923 if (!(ipv4_tun_key->tun_flags & ~OVS_TNL_F_KNOWN_MASK)) {
1924 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4_TUNNEL;
1928 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
1929 flow->in_port = nl_attr_get_u32(attrs[OVS_KEY_ATTR_IN_PORT]);
1930 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
1932 flow->in_port = OVSP_NONE;
1935 /* Ethernet header. */
1936 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
1937 const struct ovs_key_ethernet *eth_key;
1939 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
1940 memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN);
1941 memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN);
1943 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
1945 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
1946 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) {
1947 return ODP_FIT_ERROR;
1950 if (flow->dl_type == htons(ETH_TYPE_VLAN)) {
1951 return parse_8021q_onward(attrs, present_attrs, out_of_range_attr,
1952 expected_attrs, flow, key, key_len);
1954 return parse_l3_onward(attrs, present_attrs, out_of_range_attr,
1955 expected_attrs, flow, key, key_len);
1958 /* Returns 'fitness' as a string, for use in debug messages. */
1960 odp_key_fitness_to_string(enum odp_key_fitness fitness)
1963 case ODP_FIT_PERFECT:
1965 case ODP_FIT_TOO_MUCH:
1967 case ODP_FIT_TOO_LITTLE:
1968 return "too_little";
1976 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
1977 * Netlink PID 'pid'. If 'cookie' is nonnull, adds a userdata attribute whose
1978 * contents contains 'cookie' and returns the offset within 'odp_actions' of
1979 * the start of the cookie. (If 'cookie' is null, then the return value is not
1982 odp_put_userspace_action(uint32_t pid, const union user_action_cookie *cookie,
1983 struct ofpbuf *odp_actions)
1987 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
1988 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
1990 nl_msg_put_unspec(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
1991 cookie, sizeof *cookie);
1993 nl_msg_end_nested(odp_actions, offset);
1995 return cookie ? odp_actions->size - NLA_ALIGN(sizeof *cookie) : 0;
1998 /* The commit_odp_actions() function and its helpers. */
2001 commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type,
2002 const void *key, size_t key_size)
2004 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
2005 nl_msg_put_unspec(odp_actions, key_type, key, key_size);
2006 nl_msg_end_nested(odp_actions, offset);
2010 commit_set_tunnel_action(const struct flow *flow, struct flow *base,
2011 struct ofpbuf *odp_actions)
2013 if (!memcmp(&base->tunnel, &flow->tunnel, sizeof base->tunnel)) {
2016 memcpy(&base->tunnel, &flow->tunnel, sizeof base->tunnel);
2018 /* A valid IPV4_TUNNEL must have non-zero ip_dst. */
2019 if (flow->tunnel.ip_dst) {
2020 struct ovs_key_ipv4_tunnel ipv4_tun_key;
2022 ipv4_tun_key.tun_id = base->tunnel.tun_id;
2023 ipv4_tun_key.tun_flags = flow_to_odp_flags(base->tunnel.flags);
2024 ipv4_tun_key.ipv4_src = base->tunnel.ip_src;
2025 ipv4_tun_key.ipv4_dst = base->tunnel.ip_dst;
2026 ipv4_tun_key.ipv4_tos = base->tunnel.ip_tos;
2027 ipv4_tun_key.ipv4_ttl = base->tunnel.ip_ttl;
2028 memset(&ipv4_tun_key.pad, 0, sizeof ipv4_tun_key.pad);
2030 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4_TUNNEL,
2031 &ipv4_tun_key, sizeof ipv4_tun_key);
2033 commit_set_action(odp_actions, OVS_KEY_ATTR_TUN_ID,
2034 &base->tunnel.tun_id, sizeof base->tunnel.tun_id);
2039 commit_set_ether_addr_action(const struct flow *flow, struct flow *base,
2040 struct ofpbuf *odp_actions)
2042 struct ovs_key_ethernet eth_key;
2044 if (eth_addr_equals(base->dl_src, flow->dl_src) &&
2045 eth_addr_equals(base->dl_dst, flow->dl_dst)) {
2049 memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN);
2050 memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
2052 memcpy(eth_key.eth_src, base->dl_src, ETH_ADDR_LEN);
2053 memcpy(eth_key.eth_dst, base->dl_dst, ETH_ADDR_LEN);
2055 commit_set_action(odp_actions, OVS_KEY_ATTR_ETHERNET,
2056 ð_key, sizeof(eth_key));
2060 commit_vlan_action(const struct flow *flow, struct flow *base,
2061 struct ofpbuf *odp_actions)
2063 if (base->vlan_tci == flow->vlan_tci) {
2067 if (base->vlan_tci & htons(VLAN_CFI)) {
2068 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
2071 if (flow->vlan_tci & htons(VLAN_CFI)) {
2072 struct ovs_action_push_vlan vlan;
2074 vlan.vlan_tpid = htons(ETH_TYPE_VLAN);
2075 vlan.vlan_tci = flow->vlan_tci;
2076 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
2077 &vlan, sizeof vlan);
2079 base->vlan_tci = flow->vlan_tci;
2083 commit_set_ipv4_action(const struct flow *flow, struct flow *base,
2084 struct ofpbuf *odp_actions)
2086 struct ovs_key_ipv4 ipv4_key;
2088 if (base->nw_src == flow->nw_src &&
2089 base->nw_dst == flow->nw_dst &&
2090 base->nw_tos == flow->nw_tos &&
2091 base->nw_ttl == flow->nw_ttl &&
2092 base->nw_frag == flow->nw_frag) {
2096 ipv4_key.ipv4_src = base->nw_src = flow->nw_src;
2097 ipv4_key.ipv4_dst = base->nw_dst = flow->nw_dst;
2098 ipv4_key.ipv4_tos = base->nw_tos = flow->nw_tos;
2099 ipv4_key.ipv4_ttl = base->nw_ttl = flow->nw_ttl;
2100 ipv4_key.ipv4_proto = base->nw_proto;
2101 ipv4_key.ipv4_frag = ovs_to_odp_frag(base->nw_frag);
2103 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4,
2104 &ipv4_key, sizeof(ipv4_key));
2108 commit_set_ipv6_action(const struct flow *flow, struct flow *base,
2109 struct ofpbuf *odp_actions)
2111 struct ovs_key_ipv6 ipv6_key;
2113 if (ipv6_addr_equals(&base->ipv6_src, &flow->ipv6_src) &&
2114 ipv6_addr_equals(&base->ipv6_dst, &flow->ipv6_dst) &&
2115 base->ipv6_label == flow->ipv6_label &&
2116 base->nw_tos == flow->nw_tos &&
2117 base->nw_ttl == flow->nw_ttl &&
2118 base->nw_frag == flow->nw_frag) {
2122 base->ipv6_src = flow->ipv6_src;
2123 memcpy(&ipv6_key.ipv6_src, &base->ipv6_src, sizeof(ipv6_key.ipv6_src));
2124 base->ipv6_dst = flow->ipv6_dst;
2125 memcpy(&ipv6_key.ipv6_dst, &base->ipv6_dst, sizeof(ipv6_key.ipv6_dst));
2127 ipv6_key.ipv6_label = base->ipv6_label = flow->ipv6_label;
2128 ipv6_key.ipv6_tclass = base->nw_tos = flow->nw_tos;
2129 ipv6_key.ipv6_hlimit = base->nw_ttl = flow->nw_ttl;
2130 ipv6_key.ipv6_proto = base->nw_proto;
2131 ipv6_key.ipv6_frag = ovs_to_odp_frag(base->nw_frag);
2133 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV6,
2134 &ipv6_key, sizeof(ipv6_key));
2138 commit_set_nw_action(const struct flow *flow, struct flow *base,
2139 struct ofpbuf *odp_actions)
2141 /* Check if flow really have an IP header. */
2142 if (!flow->nw_proto) {
2146 if (base->dl_type == htons(ETH_TYPE_IP)) {
2147 commit_set_ipv4_action(flow, base, odp_actions);
2148 } else if (base->dl_type == htons(ETH_TYPE_IPV6)) {
2149 commit_set_ipv6_action(flow, base, odp_actions);
2154 commit_set_port_action(const struct flow *flow, struct flow *base,
2155 struct ofpbuf *odp_actions)
2157 if (!base->tp_src && !base->tp_dst) {
2161 if (base->tp_src == flow->tp_src &&
2162 base->tp_dst == flow->tp_dst) {
2166 if (flow->nw_proto == IPPROTO_TCP) {
2167 struct ovs_key_tcp port_key;
2169 port_key.tcp_src = base->tp_src = flow->tp_src;
2170 port_key.tcp_dst = base->tp_dst = flow->tp_dst;
2172 commit_set_action(odp_actions, OVS_KEY_ATTR_TCP,
2173 &port_key, sizeof(port_key));
2175 } else if (flow->nw_proto == IPPROTO_UDP) {
2176 struct ovs_key_udp port_key;
2178 port_key.udp_src = base->tp_src = flow->tp_src;
2179 port_key.udp_dst = base->tp_dst = flow->tp_dst;
2181 commit_set_action(odp_actions, OVS_KEY_ATTR_UDP,
2182 &port_key, sizeof(port_key));
2187 commit_set_priority_action(const struct flow *flow, struct flow *base,
2188 struct ofpbuf *odp_actions)
2190 if (base->skb_priority == flow->skb_priority) {
2193 base->skb_priority = flow->skb_priority;
2195 commit_set_action(odp_actions, OVS_KEY_ATTR_PRIORITY,
2196 &base->skb_priority, sizeof(base->skb_priority));
2200 commit_set_skb_mark_action(const struct flow *flow, struct flow *base,
2201 struct ofpbuf *odp_actions)
2203 if (base->skb_mark == flow->skb_mark) {
2206 base->skb_mark = flow->skb_mark;
2208 commit_set_action(odp_actions, OVS_KEY_ATTR_SKB_MARK,
2209 &base->skb_mark, sizeof(base->skb_mark));
2211 /* If any of the flow key data that ODP actions can modify are different in
2212 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
2213 * key from 'base' into 'flow', and then changes 'base' the same way. */
2215 commit_odp_actions(const struct flow *flow, struct flow *base,
2216 struct ofpbuf *odp_actions)
2218 commit_set_tunnel_action(flow, base, odp_actions);
2219 commit_set_ether_addr_action(flow, base, odp_actions);
2220 commit_vlan_action(flow, base, odp_actions);
2221 commit_set_nw_action(flow, base, odp_actions);
2222 commit_set_port_action(flow, base, odp_actions);
2223 commit_set_priority_action(flow, base, odp_actions);
2224 commit_set_skb_mark_action(flow, base, odp_actions);