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_TUN_ID: return "tun_id";
97 case OVS_KEY_ATTR_IPV4_TUNNEL: return "ipv4_tunnel";
98 case OVS_KEY_ATTR_IN_PORT: return "in_port";
99 case OVS_KEY_ATTR_ETHERNET: return "eth";
100 case OVS_KEY_ATTR_VLAN: return "vlan";
101 case OVS_KEY_ATTR_ETHERTYPE: return "eth_type";
102 case OVS_KEY_ATTR_IPV4: return "ipv4";
103 case OVS_KEY_ATTR_IPV6: return "ipv6";
104 case OVS_KEY_ATTR_TCP: return "tcp";
105 case OVS_KEY_ATTR_UDP: return "udp";
106 case OVS_KEY_ATTR_ICMP: return "icmp";
107 case OVS_KEY_ATTR_ICMPV6: return "icmpv6";
108 case OVS_KEY_ATTR_ARP: return "arp";
109 case OVS_KEY_ATTR_ND: return "nd";
111 case __OVS_KEY_ATTR_MAX:
113 snprintf(unknown_attr, sizeof unknown_attr, "key%u",
114 (unsigned int) attr);
120 format_generic_odp_action(struct ds *ds, const struct nlattr *a)
122 size_t len = nl_attr_get_size(a);
124 ds_put_format(ds, "action%"PRId16, nl_attr_type(a));
126 const uint8_t *unspec;
129 unspec = nl_attr_get(a);
130 for (i = 0; i < len; i++) {
131 ds_put_char(ds, i ? ' ': '(');
132 ds_put_format(ds, "%02x", unspec[i]);
134 ds_put_char(ds, ')');
139 format_odp_sample_action(struct ds *ds, const struct nlattr *attr)
141 static const struct nl_policy ovs_sample_policy[] = {
142 [OVS_SAMPLE_ATTR_PROBABILITY] = { .type = NL_A_U32 },
143 [OVS_SAMPLE_ATTR_ACTIONS] = { .type = NL_A_NESTED }
145 struct nlattr *a[ARRAY_SIZE(ovs_sample_policy)];
147 const struct nlattr *nla_acts;
150 ds_put_cstr(ds, "sample");
152 if (!nl_parse_nested(attr, ovs_sample_policy, a, ARRAY_SIZE(a))) {
153 ds_put_cstr(ds, "(error)");
157 percentage = (100.0 * nl_attr_get_u32(a[OVS_SAMPLE_ATTR_PROBABILITY])) /
160 ds_put_format(ds, "(sample=%.1f%%,", percentage);
162 ds_put_cstr(ds, "actions(");
163 nla_acts = nl_attr_get(a[OVS_SAMPLE_ATTR_ACTIONS]);
164 len = nl_attr_get_size(a[OVS_SAMPLE_ATTR_ACTIONS]);
165 format_odp_actions(ds, nla_acts, len);
166 ds_put_format(ds, "))");
170 slow_path_reason_to_string(uint32_t data)
172 enum slow_path_reason bit = (enum slow_path_reason) data;
183 case SLOW_CONTROLLER:
193 format_flags(struct ds *ds, const char *(*bit_to_string)(uint32_t),
198 ds_put_format(ds, "(");
203 uint32_t bit = rightmost_1bit(flags);
206 s = bit_to_string(bit);
208 ds_put_format(ds, "%s,", s);
217 ds_put_format(ds, "0x%"PRIx32",", bad);
221 ds_put_format(ds, ")");
225 parse_flags(const char *s, const char *(*bit_to_string)(uint32_t),
236 while (s[n] != ')') {
237 unsigned long long int flags;
241 if (sscanf(&s[n], "%lli%n", &flags, &n0) > 0 && n0 > 0) {
242 n += n0 + (s[n + n0] == ',');
247 for (bit = 1; bit; bit <<= 1) {
248 const char *name = bit_to_string(bit);
256 if (!strncmp(s + n, name, len) &&
257 (s[n + len] == ',' || s[n + len] == ')')) {
259 n += len + (s[n + len] == ',');
275 format_odp_userspace_action(struct ds *ds, const struct nlattr *attr)
277 static const struct nl_policy ovs_userspace_policy[] = {
278 [OVS_USERSPACE_ATTR_PID] = { .type = NL_A_U32 },
279 [OVS_USERSPACE_ATTR_USERDATA] = { .type = NL_A_U64, .optional = true },
281 struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)];
283 if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) {
284 ds_put_cstr(ds, "userspace(error)");
288 ds_put_format(ds, "userspace(pid=%"PRIu32,
289 nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID]));
291 if (a[OVS_USERSPACE_ATTR_USERDATA]) {
292 uint64_t userdata = nl_attr_get_u64(a[OVS_USERSPACE_ATTR_USERDATA]);
293 union user_action_cookie cookie;
295 memcpy(&cookie, &userdata, sizeof cookie);
297 switch (cookie.type) {
298 case USER_ACTION_COOKIE_SFLOW:
299 ds_put_format(ds, ",sFlow("
300 "vid=%"PRIu16",pcp=%"PRIu8",output=%"PRIu32")",
301 vlan_tci_to_vid(cookie.sflow.vlan_tci),
302 vlan_tci_to_pcp(cookie.sflow.vlan_tci),
303 cookie.sflow.output);
306 case USER_ACTION_COOKIE_SLOW_PATH:
307 ds_put_cstr(ds, ",slow_path");
308 format_flags(ds, slow_path_reason_to_string, cookie.slow_path.reason);
311 case USER_ACTION_COOKIE_UNSPEC:
313 ds_put_format(ds, ",userdata=0x%"PRIx64, userdata);
318 ds_put_char(ds, ')');
322 format_vlan_tci(struct ds *ds, ovs_be16 vlan_tci)
324 ds_put_format(ds, "vid=%"PRIu16",pcp=%d",
325 vlan_tci_to_vid(vlan_tci),
326 vlan_tci_to_pcp(vlan_tci));
327 if (!(vlan_tci & htons(VLAN_CFI))) {
328 ds_put_cstr(ds, ",cfi=0");
333 format_odp_action(struct ds *ds, const struct nlattr *a)
336 enum ovs_action_attr type = nl_attr_type(a);
337 const struct ovs_action_push_vlan *vlan;
339 expected_len = odp_action_len(nl_attr_type(a));
340 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
341 ds_put_format(ds, "bad length %zu, expected %d for: ",
342 nl_attr_get_size(a), expected_len);
343 format_generic_odp_action(ds, a);
348 case OVS_ACTION_ATTR_OUTPUT:
349 ds_put_format(ds, "%"PRIu16, nl_attr_get_u32(a));
351 case OVS_ACTION_ATTR_USERSPACE:
352 format_odp_userspace_action(ds, a);
354 case OVS_ACTION_ATTR_SET:
355 ds_put_cstr(ds, "set(");
356 format_odp_key_attr(nl_attr_get(a), ds);
357 ds_put_cstr(ds, ")");
359 case OVS_ACTION_ATTR_PUSH_VLAN:
360 vlan = nl_attr_get(a);
361 ds_put_cstr(ds, "push_vlan(");
362 if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
363 ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
365 format_vlan_tci(ds, vlan->vlan_tci);
366 ds_put_char(ds, ')');
368 case OVS_ACTION_ATTR_POP_VLAN:
369 ds_put_cstr(ds, "pop_vlan");
371 case OVS_ACTION_ATTR_SAMPLE:
372 format_odp_sample_action(ds, a);
374 case OVS_ACTION_ATTR_UNSPEC:
375 case __OVS_ACTION_ATTR_MAX:
377 format_generic_odp_action(ds, a);
383 format_odp_actions(struct ds *ds, const struct nlattr *actions,
387 const struct nlattr *a;
390 NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
392 ds_put_char(ds, ',');
394 format_odp_action(ds, a);
399 if (left == actions_len) {
400 ds_put_cstr(ds, "<empty>");
402 ds_put_format(ds, ",***%u leftover bytes*** (", left);
403 for (i = 0; i < left; i++) {
404 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
406 ds_put_char(ds, ')');
409 ds_put_cstr(ds, "drop");
414 parse_odp_action(const char *s, const struct simap *port_names,
415 struct ofpbuf *actions)
417 /* Many of the sscanf calls in this function use oversized destination
418 * fields because some sscanf() implementations truncate the range of %i
419 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
420 * value of 0x7fff. The other alternatives are to allow only a single
421 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
424 * The tun_id parser has to use an alternative approach because there is no
425 * type larger than 64 bits. */
428 unsigned long long int port;
431 if (sscanf(s, "%lli%n", &port, &n) > 0 && n > 0) {
432 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port);
438 int len = strcspn(s, delimiters);
439 struct simap_node *node;
441 node = simap_find_len(port_names, s, len);
443 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, node->data);
449 unsigned long long int pid;
450 unsigned long long int output;
455 if (sscanf(s, "userspace(pid=%lli)%n", &pid, &n) > 0 && n > 0) {
456 odp_put_userspace_action(pid, NULL, actions);
458 } else if (sscanf(s, "userspace(pid=%lli,sFlow(vid=%i,"
459 "pcp=%i,output=%lli))%n",
460 &pid, &vid, &pcp, &output, &n) > 0 && n > 0) {
461 union user_action_cookie cookie;
464 tci = vid | (pcp << VLAN_PCP_SHIFT);
469 cookie.type = USER_ACTION_COOKIE_SFLOW;
470 cookie.sflow.vlan_tci = htons(tci);
471 cookie.sflow.output = output;
472 odp_put_userspace_action(pid, &cookie, actions);
474 } else if (sscanf(s, "userspace(pid=%lli,slow_path%n", &pid, &n) > 0
476 union user_action_cookie cookie;
479 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
480 cookie.slow_path.unused = 0;
481 cookie.slow_path.reason = 0;
483 res = parse_flags(&s[n], slow_path_reason_to_string,
484 &cookie.slow_path.reason);
494 odp_put_userspace_action(pid, &cookie, actions);
496 } else if (sscanf(s, "userspace(pid=%lli,userdata="
497 "%31[x0123456789abcdefABCDEF])%n", &pid, userdata_s,
499 union user_action_cookie cookie;
502 userdata = strtoull(userdata_s, NULL, 0);
503 memcpy(&cookie, &userdata, sizeof cookie);
504 odp_put_userspace_action(pid, &cookie, actions);
509 if (!strncmp(s, "set(", 4)) {
513 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET);
514 retval = parse_odp_key_attr(s + 4, port_names, actions);
518 if (s[retval + 4] != ')') {
521 nl_msg_end_nested(actions, start_ofs);
526 struct ovs_action_push_vlan push;
527 int tpid = ETH_TYPE_VLAN;
532 if ((sscanf(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n) > 0
534 || (sscanf(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n",
535 &vid, &pcp, &cfi, &n) > 0 && n > 0)
536 || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n",
537 &tpid, &vid, &pcp, &n) > 0 && n > 0)
538 || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n",
539 &tpid, &vid, &pcp, &cfi, &n) > 0 && n > 0)) {
540 push.vlan_tpid = htons(tpid);
541 push.vlan_tci = htons((vid << VLAN_VID_SHIFT)
542 | (pcp << VLAN_PCP_SHIFT)
543 | (cfi ? VLAN_CFI : 0));
544 nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN,
551 if (!strncmp(s, "pop_vlan", 8)) {
552 nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN);
560 if (sscanf(s, "sample(sample=%lf%%,actions(%n", &percentage, &n) > 0
561 && percentage >= 0. && percentage <= 100.0
563 size_t sample_ofs, actions_ofs;
566 probability = floor(UINT32_MAX * (percentage / 100.0) + .5);
567 sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE);
568 nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY,
569 (probability <= 0 ? 0
570 : probability >= UINT32_MAX ? UINT32_MAX
573 actions_ofs = nl_msg_start_nested(actions,
574 OVS_SAMPLE_ATTR_ACTIONS);
578 n += strspn(s + n, delimiters);
583 retval = parse_odp_action(s + n, port_names, actions);
589 nl_msg_end_nested(actions, actions_ofs);
590 nl_msg_end_nested(actions, sample_ofs);
592 return s[n + 1] == ')' ? n + 2 : -EINVAL;
599 /* Parses the string representation of datapath actions, in the format output
600 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
601 * value. On success, the ODP actions are appended to 'actions' as a series of
602 * Netlink attributes. On failure, no data is appended to 'actions'. Either
603 * way, 'actions''s data might be reallocated. */
605 odp_actions_from_string(const char *s, const struct simap *port_names,
606 struct ofpbuf *actions)
610 if (!strcasecmp(s, "drop")) {
614 old_size = actions->size;
618 s += strspn(s, delimiters);
623 retval = parse_odp_action(s, port_names, actions);
624 if (retval < 0 || !strchr(delimiters, s[retval])) {
625 actions->size = old_size;
634 /* Returns the correct length of the payload for a flow key attribute of the
635 * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload
636 * is variable length. */
638 odp_flow_key_attr_len(uint16_t type)
640 if (type > OVS_KEY_ATTR_MAX) {
644 switch ((enum ovs_key_attr) type) {
645 case OVS_KEY_ATTR_ENCAP: return -2;
646 case OVS_KEY_ATTR_PRIORITY: return 4;
647 case OVS_KEY_ATTR_TUN_ID: return 8;
648 case OVS_KEY_ATTR_IPV4_TUNNEL: return sizeof(struct ovs_key_ipv4_tunnel);
649 case OVS_KEY_ATTR_IN_PORT: return 4;
650 case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet);
651 case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16);
652 case OVS_KEY_ATTR_ETHERTYPE: return 2;
653 case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4);
654 case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6);
655 case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp);
656 case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp);
657 case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp);
658 case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6);
659 case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp);
660 case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd);
662 case OVS_KEY_ATTR_UNSPEC:
663 case __OVS_KEY_ATTR_MAX:
671 format_generic_odp_key(const struct nlattr *a, struct ds *ds)
673 size_t len = nl_attr_get_size(a);
675 const uint8_t *unspec;
678 unspec = nl_attr_get(a);
679 for (i = 0; i < len; i++) {
680 ds_put_char(ds, i ? ' ': '(');
681 ds_put_format(ds, "%02x", unspec[i]);
683 ds_put_char(ds, ')');
688 ovs_frag_type_to_string(enum ovs_frag_type type)
691 case OVS_FRAG_TYPE_NONE:
693 case OVS_FRAG_TYPE_FIRST:
695 case OVS_FRAG_TYPE_LATER:
697 case __OVS_FRAG_TYPE_MAX:
704 tun_flag_to_string(uint32_t flags)
707 case OVS_TNL_F_DONT_FRAGMENT:
719 format_odp_key_attr(const struct nlattr *a, struct ds *ds)
721 const struct ovs_key_ethernet *eth_key;
722 const struct ovs_key_ipv4 *ipv4_key;
723 const struct ovs_key_ipv6 *ipv6_key;
724 const struct ovs_key_tcp *tcp_key;
725 const struct ovs_key_udp *udp_key;
726 const struct ovs_key_icmp *icmp_key;
727 const struct ovs_key_icmpv6 *icmpv6_key;
728 const struct ovs_key_arp *arp_key;
729 const struct ovs_key_nd *nd_key;
730 const struct ovs_key_ipv4_tunnel *ipv4_tun_key;
731 enum ovs_key_attr attr = nl_attr_type(a);
734 ds_put_cstr(ds, ovs_key_attr_to_string(attr));
735 expected_len = odp_flow_key_attr_len(nl_attr_type(a));
736 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
737 ds_put_format(ds, "(bad length %zu, expected %d)",
739 odp_flow_key_attr_len(nl_attr_type(a)));
740 format_generic_odp_key(a, ds);
745 case OVS_KEY_ATTR_ENCAP:
746 ds_put_cstr(ds, "(");
747 if (nl_attr_get_size(a)) {
748 odp_flow_key_format(nl_attr_get(a), nl_attr_get_size(a), ds);
750 ds_put_char(ds, ')');
753 case OVS_KEY_ATTR_PRIORITY:
754 ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a));
757 case OVS_KEY_ATTR_TUN_ID:
758 ds_put_format(ds, "(%#"PRIx64")", ntohll(nl_attr_get_be64(a)));
761 case OVS_KEY_ATTR_IPV4_TUNNEL:
762 ipv4_tun_key = nl_attr_get(a);
763 ds_put_format(ds, "(tun_id=0x%"PRIx64",src="IP_FMT",dst="IP_FMT","
764 "tos=0x%"PRIx8",ttl=%"PRIu8",flags",
765 ntohll(ipv4_tun_key->tun_id),
766 IP_ARGS(&ipv4_tun_key->ipv4_src),
767 IP_ARGS(&ipv4_tun_key->ipv4_dst),
768 ipv4_tun_key->ipv4_tos, ipv4_tun_key->ipv4_ttl);
770 format_flags(ds, tun_flag_to_string, ipv4_tun_key->tun_flags);
771 ds_put_format(ds, ")");
774 case OVS_KEY_ATTR_IN_PORT:
775 ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a));
778 case OVS_KEY_ATTR_ETHERNET:
779 eth_key = nl_attr_get(a);
780 ds_put_format(ds, "(src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT")",
781 ETH_ADDR_ARGS(eth_key->eth_src),
782 ETH_ADDR_ARGS(eth_key->eth_dst));
785 case OVS_KEY_ATTR_VLAN:
786 ds_put_char(ds, '(');
787 format_vlan_tci(ds, nl_attr_get_be16(a));
788 ds_put_char(ds, ')');
791 case OVS_KEY_ATTR_ETHERTYPE:
792 ds_put_format(ds, "(0x%04"PRIx16")",
793 ntohs(nl_attr_get_be16(a)));
796 case OVS_KEY_ATTR_IPV4:
797 ipv4_key = nl_attr_get(a);
798 ds_put_format(ds, "(src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
799 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s)",
800 IP_ARGS(&ipv4_key->ipv4_src),
801 IP_ARGS(&ipv4_key->ipv4_dst),
802 ipv4_key->ipv4_proto, ipv4_key->ipv4_tos,
804 ovs_frag_type_to_string(ipv4_key->ipv4_frag));
807 case OVS_KEY_ATTR_IPV6: {
808 char src_str[INET6_ADDRSTRLEN];
809 char dst_str[INET6_ADDRSTRLEN];
811 ipv6_key = nl_attr_get(a);
812 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
813 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
815 ds_put_format(ds, "(src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8
816 ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s)",
817 src_str, dst_str, ntohl(ipv6_key->ipv6_label),
818 ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass,
819 ipv6_key->ipv6_hlimit,
820 ovs_frag_type_to_string(ipv6_key->ipv6_frag));
824 case OVS_KEY_ATTR_TCP:
825 tcp_key = nl_attr_get(a);
826 ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
827 ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst));
830 case OVS_KEY_ATTR_UDP:
831 udp_key = nl_attr_get(a);
832 ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
833 ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst));
836 case OVS_KEY_ATTR_ICMP:
837 icmp_key = nl_attr_get(a);
838 ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")",
839 icmp_key->icmp_type, icmp_key->icmp_code);
842 case OVS_KEY_ATTR_ICMPV6:
843 icmpv6_key = nl_attr_get(a);
844 ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")",
845 icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code);
848 case OVS_KEY_ATTR_ARP:
849 arp_key = nl_attr_get(a);
850 ds_put_format(ds, "(sip="IP_FMT",tip="IP_FMT",op=%"PRIu16","
851 "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT")",
852 IP_ARGS(&arp_key->arp_sip), IP_ARGS(&arp_key->arp_tip),
853 ntohs(arp_key->arp_op), ETH_ADDR_ARGS(arp_key->arp_sha),
854 ETH_ADDR_ARGS(arp_key->arp_tha));
857 case OVS_KEY_ATTR_ND: {
858 char target[INET6_ADDRSTRLEN];
860 nd_key = nl_attr_get(a);
861 inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target);
863 ds_put_format(ds, "(target=%s", target);
864 if (!eth_addr_is_zero(nd_key->nd_sll)) {
865 ds_put_format(ds, ",sll="ETH_ADDR_FMT,
866 ETH_ADDR_ARGS(nd_key->nd_sll));
868 if (!eth_addr_is_zero(nd_key->nd_tll)) {
869 ds_put_format(ds, ",tll="ETH_ADDR_FMT,
870 ETH_ADDR_ARGS(nd_key->nd_tll));
872 ds_put_char(ds, ')');
876 case OVS_KEY_ATTR_UNSPEC:
877 case __OVS_KEY_ATTR_MAX:
879 format_generic_odp_key(a, ds);
884 /* Appends to 'ds' a string representation of the 'key_len' bytes of
885 * OVS_KEY_ATTR_* attributes in 'key'. */
887 odp_flow_key_format(const struct nlattr *key, size_t key_len, struct ds *ds)
890 const struct nlattr *a;
893 NL_ATTR_FOR_EACH (a, left, key, key_len) {
895 ds_put_char(ds, ',');
897 format_odp_key_attr(a, ds);
902 if (left == key_len) {
903 ds_put_cstr(ds, "<empty>");
905 ds_put_format(ds, ",***%u leftover bytes*** (", left);
906 for (i = 0; i < left; i++) {
907 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
909 ds_put_char(ds, ')');
912 ds_put_cstr(ds, "<empty>");
917 put_nd_key(int n, const char *nd_target_s,
918 const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *key)
920 struct ovs_key_nd nd_key;
922 memset(&nd_key, 0, sizeof nd_key);
923 if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
927 memcpy(nd_key.nd_sll, nd_sll, ETH_ADDR_LEN);
930 memcpy(nd_key.nd_tll, nd_tll, ETH_ADDR_LEN);
932 nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, &nd_key, sizeof nd_key);
937 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
939 if (!strcasecmp(s, "no")) {
940 *type = OVS_FRAG_TYPE_NONE;
941 } else if (!strcasecmp(s, "first")) {
942 *type = OVS_FRAG_TYPE_FIRST;
943 } else if (!strcasecmp(s, "later")) {
944 *type = OVS_FRAG_TYPE_LATER;
952 parse_odp_key_attr(const char *s, const struct simap *port_names,
955 /* Many of the sscanf calls in this function use oversized destination
956 * fields because some sscanf() implementations truncate the range of %i
957 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
958 * value of 0x7fff. The other alternatives are to allow only a single
959 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
962 * The tun_id parser has to use an alternative approach because there is no
963 * type larger than 64 bits. */
966 unsigned long long int priority;
969 if (sscanf(s, "priority(%lli)%n", &priority, &n) > 0 && n > 0) {
970 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
979 if (sscanf(s, "tun_id(%31[x0123456789abcdefABCDEF])%n",
980 tun_id_s, &n) > 0 && n > 0) {
981 uint64_t tun_id = strtoull(tun_id_s, NULL, 0);
982 nl_msg_put_be64(key, OVS_KEY_ATTR_TUN_ID, htonll(tun_id));
990 struct ovs_key_ipv4_tunnel tun_key;
993 if (sscanf(s, "ipv4_tunnel(tun_id=%31[x0123456789abcdefABCDEF],"
994 "src="IP_SCAN_FMT",dst="IP_SCAN_FMT
995 ",tos=%i,ttl=%i,flags%n", tun_id_s,
996 IP_SCAN_ARGS(&tun_key.ipv4_src),
997 IP_SCAN_ARGS(&tun_key.ipv4_dst), &tos, &ttl,
1001 tun_key.tun_id = htonll(strtoull(tun_id_s, NULL, 0));
1002 tun_key.ipv4_tos = tos;
1003 tun_key.ipv4_ttl = ttl;
1005 res = parse_flags(&s[n], tun_flag_to_string, &tun_key.tun_flags);
1015 memset(&tun_key.pad, 0, sizeof tun_key.pad);
1016 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4_TUNNEL, &tun_key,
1023 unsigned long long int in_port;
1026 if (sscanf(s, "in_port(%lli)%n", &in_port, &n) > 0 && n > 0) {
1027 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1032 if (port_names && !strncmp(s, "in_port(", 8)) {
1034 const struct simap_node *node;
1038 name_len = strcspn(s, ")");
1039 node = simap_find_len(port_names, name, name_len);
1041 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, node->data);
1042 return 8 + name_len + 1;
1047 struct ovs_key_ethernet eth_key;
1051 "eth(src="ETH_ADDR_SCAN_FMT",dst="ETH_ADDR_SCAN_FMT")%n",
1052 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1053 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n) > 0 && n > 0) {
1054 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1055 ð_key, sizeof eth_key);
1066 if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i)%n", &vid, &pcp, &n) > 0
1068 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1069 htons((vid << VLAN_VID_SHIFT) |
1070 (pcp << VLAN_PCP_SHIFT) |
1073 } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i,cfi=%i)%n",
1074 &vid, &pcp, &cfi, &n) > 0
1076 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1077 htons((vid << VLAN_VID_SHIFT) |
1078 (pcp << VLAN_PCP_SHIFT) |
1079 (cfi ? VLAN_CFI : 0)));
1088 if (sscanf(s, "eth_type(%i)%n", ð_type, &n) > 0 && n > 0) {
1089 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1101 enum ovs_frag_type ipv4_frag;
1104 if (sscanf(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
1105 "proto=%i,tos=%i,ttl=%i,frag=%7[a-z])%n",
1106 IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_dst),
1107 &ipv4_proto, &ipv4_tos, &ipv4_ttl, frag, &n) > 0
1109 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1110 struct ovs_key_ipv4 ipv4_key;
1112 ipv4_key.ipv4_src = ipv4_src;
1113 ipv4_key.ipv4_dst = ipv4_dst;
1114 ipv4_key.ipv4_proto = ipv4_proto;
1115 ipv4_key.ipv4_tos = ipv4_tos;
1116 ipv4_key.ipv4_ttl = ipv4_ttl;
1117 ipv4_key.ipv4_frag = ipv4_frag;
1118 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1119 &ipv4_key, sizeof ipv4_key);
1125 char ipv6_src_s[IPV6_SCAN_LEN + 1];
1126 char ipv6_dst_s[IPV6_SCAN_LEN + 1];
1132 enum ovs_frag_type ipv6_frag;
1135 if (sscanf(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
1136 "label=%i,proto=%i,tclass=%i,hlimit=%i,frag=%7[a-z])%n",
1137 ipv6_src_s, ipv6_dst_s, &ipv6_label,
1138 &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n) > 0
1140 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
1141 struct ovs_key_ipv6 ipv6_key;
1143 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
1144 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
1147 ipv6_key.ipv6_label = htonl(ipv6_label);
1148 ipv6_key.ipv6_proto = ipv6_proto;
1149 ipv6_key.ipv6_tclass = ipv6_tclass;
1150 ipv6_key.ipv6_hlimit = ipv6_hlimit;
1151 ipv6_key.ipv6_frag = ipv6_frag;
1152 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
1153 &ipv6_key, sizeof ipv6_key);
1163 if (sscanf(s, "tcp(src=%i,dst=%i)%n",&tcp_src, &tcp_dst, &n) > 0
1165 struct ovs_key_tcp tcp_key;
1167 tcp_key.tcp_src = htons(tcp_src);
1168 tcp_key.tcp_dst = htons(tcp_dst);
1169 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
1179 if (sscanf(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n) > 0
1181 struct ovs_key_udp udp_key;
1183 udp_key.udp_src = htons(udp_src);
1184 udp_key.udp_dst = htons(udp_dst);
1185 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
1195 if (sscanf(s, "icmp(type=%i,code=%i)%n",
1196 &icmp_type, &icmp_code, &n) > 0
1198 struct ovs_key_icmp icmp_key;
1200 icmp_key.icmp_type = icmp_type;
1201 icmp_key.icmp_code = icmp_code;
1202 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
1203 &icmp_key, sizeof icmp_key);
1209 struct ovs_key_icmpv6 icmpv6_key;
1212 if (sscanf(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
1213 &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,&n) > 0
1215 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
1216 &icmpv6_key, sizeof icmpv6_key);
1225 uint8_t arp_sha[ETH_ADDR_LEN];
1226 uint8_t arp_tha[ETH_ADDR_LEN];
1229 if (sscanf(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
1230 "op=%i,sha="ETH_ADDR_SCAN_FMT",tha="ETH_ADDR_SCAN_FMT")%n",
1231 IP_SCAN_ARGS(&arp_sip),
1232 IP_SCAN_ARGS(&arp_tip),
1234 ETH_ADDR_SCAN_ARGS(arp_sha),
1235 ETH_ADDR_SCAN_ARGS(arp_tha), &n) > 0 && n > 0) {
1236 struct ovs_key_arp arp_key;
1238 memset(&arp_key, 0, sizeof arp_key);
1239 arp_key.arp_sip = arp_sip;
1240 arp_key.arp_tip = arp_tip;
1241 arp_key.arp_op = htons(arp_op);
1242 memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
1243 memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
1244 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
1250 char nd_target_s[IPV6_SCAN_LEN + 1];
1251 uint8_t nd_sll[ETH_ADDR_LEN];
1252 uint8_t nd_tll[ETH_ADDR_LEN];
1255 if (sscanf(s, "nd(target="IPV6_SCAN_FMT")%n",
1256 nd_target_s, &n) > 0 && n > 0) {
1257 return put_nd_key(n, nd_target_s, NULL, NULL, key);
1259 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT")%n",
1260 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n) > 0
1262 return put_nd_key(n, nd_target_s, nd_sll, NULL, key);
1264 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",tll="ETH_ADDR_SCAN_FMT")%n",
1265 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
1267 return put_nd_key(n, nd_target_s, NULL, nd_tll, key);
1269 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT","
1270 "tll="ETH_ADDR_SCAN_FMT")%n",
1271 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
1272 ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
1274 return put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
1278 if (!strncmp(s, "encap(", 6)) {
1279 const char *start = s;
1282 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
1288 s += strspn(s, ", \t\r\n");
1291 } else if (*s == ')') {
1295 retval = parse_odp_key_attr(s, port_names, key);
1303 nl_msg_end_nested(key, encap);
1311 /* Parses the string representation of a datapath flow key, in the
1312 * format output by odp_flow_key_format(). Returns 0 if successful,
1313 * otherwise a positive errno value. On success, the flow key is
1314 * appended to 'key' as a series of Netlink attributes. On failure, no
1315 * data is appended to 'key'. Either way, 'key''s data might be
1318 * If 'port_names' is nonnull, it points to an simap that maps from a port name
1319 * to a port number. (Port names may be used instead of port numbers in
1322 * On success, the attributes appended to 'key' are individually syntactically
1323 * valid, but they may not be valid as a sequence. 'key' might, for example,
1324 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
1326 odp_flow_key_from_string(const char *s, const struct simap *port_names,
1329 const size_t old_size = key->size;
1333 s += strspn(s, delimiters);
1338 retval = parse_odp_key_attr(s, port_names, key);
1340 key->size = old_size;
1350 ovs_to_odp_frag(uint8_t nw_frag)
1352 return (nw_frag == 0 ? OVS_FRAG_TYPE_NONE
1353 : nw_frag == FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST
1354 : OVS_FRAG_TYPE_LATER);
1357 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
1358 * 'flow->in_port' is ignored (since it is likely to be an OpenFlow port
1359 * number rather than a datapath port number). Instead, if 'odp_in_port'
1360 * is anything other than OVSP_NONE, it is included in 'buf' as the input
1363 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
1364 * capable of being expanded to allow for that much space. */
1366 odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow,
1367 uint32_t odp_in_port)
1369 struct ovs_key_ethernet *eth_key;
1372 if (flow->skb_priority) {
1373 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, flow->skb_priority);
1376 if (flow->tunnel.tun_id != htonll(0)) {
1377 nl_msg_put_be64(buf, OVS_KEY_ATTR_TUN_ID, flow->tunnel.tun_id);
1380 if (odp_in_port != OVSP_NONE) {
1381 nl_msg_put_u32(buf, OVS_KEY_ATTR_IN_PORT, odp_in_port);
1384 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
1386 memcpy(eth_key->eth_src, flow->dl_src, ETH_ADDR_LEN);
1387 memcpy(eth_key->eth_dst, flow->dl_dst, ETH_ADDR_LEN);
1389 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
1390 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
1391 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, flow->vlan_tci);
1392 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
1393 if (flow->vlan_tci == htons(0)) {
1400 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
1404 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, flow->dl_type);
1406 if (flow->dl_type == htons(ETH_TYPE_IP)) {
1407 struct ovs_key_ipv4 *ipv4_key;
1409 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
1411 ipv4_key->ipv4_src = flow->nw_src;
1412 ipv4_key->ipv4_dst = flow->nw_dst;
1413 ipv4_key->ipv4_proto = flow->nw_proto;
1414 ipv4_key->ipv4_tos = flow->nw_tos;
1415 ipv4_key->ipv4_ttl = flow->nw_ttl;
1416 ipv4_key->ipv4_frag = ovs_to_odp_frag(flow->nw_frag);
1417 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
1418 struct ovs_key_ipv6 *ipv6_key;
1420 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
1422 memcpy(ipv6_key->ipv6_src, &flow->ipv6_src, sizeof ipv6_key->ipv6_src);
1423 memcpy(ipv6_key->ipv6_dst, &flow->ipv6_dst, sizeof ipv6_key->ipv6_dst);
1424 ipv6_key->ipv6_label = flow->ipv6_label;
1425 ipv6_key->ipv6_proto = flow->nw_proto;
1426 ipv6_key->ipv6_tclass = flow->nw_tos;
1427 ipv6_key->ipv6_hlimit = flow->nw_ttl;
1428 ipv6_key->ipv6_frag = ovs_to_odp_frag(flow->nw_frag);
1429 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
1430 flow->dl_type == htons(ETH_TYPE_RARP)) {
1431 struct ovs_key_arp *arp_key;
1433 arp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ARP,
1435 memset(arp_key, 0, sizeof *arp_key);
1436 arp_key->arp_sip = flow->nw_src;
1437 arp_key->arp_tip = flow->nw_dst;
1438 arp_key->arp_op = htons(flow->nw_proto);
1439 memcpy(arp_key->arp_sha, flow->arp_sha, ETH_ADDR_LEN);
1440 memcpy(arp_key->arp_tha, flow->arp_tha, ETH_ADDR_LEN);
1443 if ((flow->dl_type == htons(ETH_TYPE_IP)
1444 || flow->dl_type == htons(ETH_TYPE_IPV6))
1445 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1447 if (flow->nw_proto == IPPROTO_TCP) {
1448 struct ovs_key_tcp *tcp_key;
1450 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
1452 tcp_key->tcp_src = flow->tp_src;
1453 tcp_key->tcp_dst = flow->tp_dst;
1454 } else if (flow->nw_proto == IPPROTO_UDP) {
1455 struct ovs_key_udp *udp_key;
1457 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
1459 udp_key->udp_src = flow->tp_src;
1460 udp_key->udp_dst = flow->tp_dst;
1461 } else if (flow->dl_type == htons(ETH_TYPE_IP)
1462 && flow->nw_proto == IPPROTO_ICMP) {
1463 struct ovs_key_icmp *icmp_key;
1465 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
1467 icmp_key->icmp_type = ntohs(flow->tp_src);
1468 icmp_key->icmp_code = ntohs(flow->tp_dst);
1469 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
1470 && flow->nw_proto == IPPROTO_ICMPV6) {
1471 struct ovs_key_icmpv6 *icmpv6_key;
1473 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
1474 sizeof *icmpv6_key);
1475 icmpv6_key->icmpv6_type = ntohs(flow->tp_src);
1476 icmpv6_key->icmpv6_code = ntohs(flow->tp_dst);
1478 if (icmpv6_key->icmpv6_type == ND_NEIGHBOR_SOLICIT
1479 || icmpv6_key->icmpv6_type == ND_NEIGHBOR_ADVERT) {
1480 struct ovs_key_nd *nd_key;
1482 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
1484 memcpy(nd_key->nd_target, &flow->nd_target,
1485 sizeof nd_key->nd_target);
1486 memcpy(nd_key->nd_sll, flow->arp_sha, ETH_ADDR_LEN);
1487 memcpy(nd_key->nd_tll, flow->arp_tha, ETH_ADDR_LEN);
1494 nl_msg_end_nested(buf, encap);
1499 odp_flow_key_hash(const struct nlattr *key, size_t key_len)
1501 BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t)));
1502 return hash_words((const uint32_t *) key, key_len / sizeof(uint32_t), 0);
1506 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
1507 uint64_t attrs, int out_of_range_attr,
1508 const struct nlattr *key, size_t key_len)
1513 if (VLOG_DROP_DBG(rl)) {
1518 for (i = 0; i < 64; i++) {
1519 if (attrs & (UINT64_C(1) << i)) {
1520 ds_put_format(&s, " %s", ovs_key_attr_to_string(i));
1523 if (out_of_range_attr) {
1524 ds_put_format(&s, " %d (and possibly others)", out_of_range_attr);
1527 ds_put_cstr(&s, ": ");
1528 odp_flow_key_format(key, key_len, &s);
1530 VLOG_DBG("%s:%s", title, ds_cstr(&s));
1535 odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow)
1537 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1539 if (odp_frag > OVS_FRAG_TYPE_LATER) {
1540 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag);
1544 if (odp_frag != OVS_FRAG_TYPE_NONE) {
1545 flow->nw_frag |= FLOW_NW_FRAG_ANY;
1546 if (odp_frag == OVS_FRAG_TYPE_LATER) {
1547 flow->nw_frag |= FLOW_NW_FRAG_LATER;
1554 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
1555 const struct nlattr *attrs[], uint64_t *present_attrsp,
1556 int *out_of_range_attrp)
1558 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
1559 const struct nlattr *nla;
1560 uint64_t present_attrs;
1564 *out_of_range_attrp = 0;
1565 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
1566 uint16_t type = nl_attr_type(nla);
1567 size_t len = nl_attr_get_size(nla);
1568 int expected_len = odp_flow_key_attr_len(type);
1570 if (len != expected_len && expected_len >= 0) {
1571 VLOG_ERR_RL(&rl, "attribute %s has length %zu but should have "
1572 "length %d", ovs_key_attr_to_string(type),
1577 if (type >= CHAR_BIT * sizeof present_attrs) {
1578 *out_of_range_attrp = type;
1580 if (present_attrs & (UINT64_C(1) << type)) {
1581 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
1582 ovs_key_attr_to_string(type));
1586 present_attrs |= UINT64_C(1) << type;
1591 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
1595 *present_attrsp = present_attrs;
1599 static enum odp_key_fitness
1600 check_expectations(uint64_t present_attrs, int out_of_range_attr,
1601 uint64_t expected_attrs,
1602 const struct nlattr *key, size_t key_len)
1604 uint64_t missing_attrs;
1605 uint64_t extra_attrs;
1607 missing_attrs = expected_attrs & ~present_attrs;
1608 if (missing_attrs) {
1609 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
1610 log_odp_key_attributes(&rl, "expected but not present",
1611 missing_attrs, 0, key, key_len);
1612 return ODP_FIT_TOO_LITTLE;
1615 extra_attrs = present_attrs & ~expected_attrs;
1616 if (extra_attrs || out_of_range_attr) {
1617 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
1618 log_odp_key_attributes(&rl, "present but not expected",
1619 extra_attrs, out_of_range_attr, key, key_len);
1620 return ODP_FIT_TOO_MUCH;
1623 return ODP_FIT_PERFECT;
1627 parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
1628 uint64_t present_attrs, uint64_t *expected_attrs,
1631 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1633 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
1634 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
1635 if (ntohs(flow->dl_type) < 1536) {
1636 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
1637 ntohs(flow->dl_type));
1640 *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
1642 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
1647 static enum odp_key_fitness
1648 parse_l3_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
1649 uint64_t present_attrs, int out_of_range_attr,
1650 uint64_t expected_attrs, struct flow *flow,
1651 const struct nlattr *key, size_t key_len)
1653 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1655 if (flow->dl_type == htons(ETH_TYPE_IP)) {
1656 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
1657 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
1658 const struct ovs_key_ipv4 *ipv4_key;
1660 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
1661 flow->nw_src = ipv4_key->ipv4_src;
1662 flow->nw_dst = ipv4_key->ipv4_dst;
1663 flow->nw_proto = ipv4_key->ipv4_proto;
1664 flow->nw_tos = ipv4_key->ipv4_tos;
1665 flow->nw_ttl = ipv4_key->ipv4_ttl;
1666 if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) {
1667 return ODP_FIT_ERROR;
1670 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
1671 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
1672 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
1673 const struct ovs_key_ipv6 *ipv6_key;
1675 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
1676 memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src);
1677 memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst);
1678 flow->ipv6_label = ipv6_key->ipv6_label;
1679 flow->nw_proto = ipv6_key->ipv6_proto;
1680 flow->nw_tos = ipv6_key->ipv6_tclass;
1681 flow->nw_ttl = ipv6_key->ipv6_hlimit;
1682 if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) {
1683 return ODP_FIT_ERROR;
1686 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
1687 flow->dl_type == htons(ETH_TYPE_RARP)) {
1688 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
1689 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
1690 const struct ovs_key_arp *arp_key;
1692 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
1693 flow->nw_src = arp_key->arp_sip;
1694 flow->nw_dst = arp_key->arp_tip;
1695 if (arp_key->arp_op & htons(0xff00)) {
1696 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
1697 "key", ntohs(arp_key->arp_op));
1698 return ODP_FIT_ERROR;
1700 flow->nw_proto = ntohs(arp_key->arp_op);
1701 memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN);
1702 memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN);
1706 if (flow->nw_proto == IPPROTO_TCP
1707 && (flow->dl_type == htons(ETH_TYPE_IP) ||
1708 flow->dl_type == htons(ETH_TYPE_IPV6))
1709 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1710 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
1711 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
1712 const struct ovs_key_tcp *tcp_key;
1714 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
1715 flow->tp_src = tcp_key->tcp_src;
1716 flow->tp_dst = tcp_key->tcp_dst;
1718 } else if (flow->nw_proto == IPPROTO_UDP
1719 && (flow->dl_type == htons(ETH_TYPE_IP) ||
1720 flow->dl_type == htons(ETH_TYPE_IPV6))
1721 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1722 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
1723 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
1724 const struct ovs_key_udp *udp_key;
1726 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
1727 flow->tp_src = udp_key->udp_src;
1728 flow->tp_dst = udp_key->udp_dst;
1730 } else if (flow->nw_proto == IPPROTO_ICMP
1731 && flow->dl_type == htons(ETH_TYPE_IP)
1732 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1733 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
1734 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
1735 const struct ovs_key_icmp *icmp_key;
1737 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
1738 flow->tp_src = htons(icmp_key->icmp_type);
1739 flow->tp_dst = htons(icmp_key->icmp_code);
1741 } else if (flow->nw_proto == IPPROTO_ICMPV6
1742 && flow->dl_type == htons(ETH_TYPE_IPV6)
1743 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1744 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
1745 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
1746 const struct ovs_key_icmpv6 *icmpv6_key;
1748 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
1749 flow->tp_src = htons(icmpv6_key->icmpv6_type);
1750 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
1752 if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
1753 flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) {
1754 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
1755 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
1756 const struct ovs_key_nd *nd_key;
1758 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
1759 memcpy(&flow->nd_target, nd_key->nd_target,
1760 sizeof flow->nd_target);
1761 memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN);
1762 memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN);
1768 return check_expectations(present_attrs, out_of_range_attr, expected_attrs,
1772 /* Parse 802.1Q header then encapsulated L3 attributes. */
1773 static enum odp_key_fitness
1774 parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
1775 uint64_t present_attrs, int out_of_range_attr,
1776 uint64_t expected_attrs, struct flow *flow,
1777 const struct nlattr *key, size_t key_len)
1779 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1781 const struct nlattr *encap
1782 = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)
1783 ? attrs[OVS_KEY_ATTR_ENCAP] : NULL);
1784 enum odp_key_fitness encap_fitness;
1785 enum odp_key_fitness fitness;
1788 /* Calulate fitness of outer attributes. */
1789 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
1790 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
1791 fitness = check_expectations(present_attrs, out_of_range_attr,
1792 expected_attrs, key, key_len);
1794 /* Get the VLAN TCI value. */
1795 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) {
1796 return ODP_FIT_TOO_LITTLE;
1798 tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
1799 if (tci == htons(0)) {
1800 /* Corner case for a truncated 802.1Q header. */
1801 if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) {
1802 return ODP_FIT_TOO_MUCH;
1805 } else if (!(tci & htons(VLAN_CFI))) {
1806 VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero "
1807 "but CFI bit is not set", ntohs(tci));
1808 return ODP_FIT_ERROR;
1812 * Remove the TPID from dl_type since it's not the real Ethertype. */
1813 flow->vlan_tci = tci;
1814 flow->dl_type = htons(0);
1816 /* Now parse the encapsulated attributes. */
1817 if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
1818 attrs, &present_attrs, &out_of_range_attr)) {
1819 return ODP_FIT_ERROR;
1823 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) {
1824 return ODP_FIT_ERROR;
1826 encap_fitness = parse_l3_onward(attrs, present_attrs, out_of_range_attr,
1827 expected_attrs, flow, key, key_len);
1829 /* The overall fitness is the worse of the outer and inner attributes. */
1830 return MAX(fitness, encap_fitness);
1833 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
1834 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
1835 * 'key' fits our expectations for what a flow key should contain.
1837 * The 'in_port' will be the datapath's understanding of the port. The
1838 * caller will need to translate with odp_port_to_ofp_port() if the
1839 * OpenFlow port is needed.
1841 * This function doesn't take the packet itself as an argument because none of
1842 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
1843 * it is always possible to infer which additional attribute(s) should appear
1844 * by looking at the attributes for lower-level protocols, e.g. if the network
1845 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
1846 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
1847 * must be absent. */
1848 enum odp_key_fitness
1849 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
1852 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
1853 uint64_t expected_attrs;
1854 uint64_t present_attrs;
1855 int out_of_range_attr;
1857 memset(flow, 0, sizeof *flow);
1859 /* Parse attributes. */
1860 if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs,
1861 &out_of_range_attr)) {
1862 return ODP_FIT_ERROR;
1867 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
1868 flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
1869 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
1872 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUN_ID)) {
1873 flow->tunnel.tun_id = nl_attr_get_be64(attrs[OVS_KEY_ATTR_TUN_ID]);
1874 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUN_ID;
1877 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
1878 flow->in_port = nl_attr_get_u32(attrs[OVS_KEY_ATTR_IN_PORT]);
1879 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
1881 flow->in_port = OVSP_NONE;
1884 /* Ethernet header. */
1885 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
1886 const struct ovs_key_ethernet *eth_key;
1888 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
1889 memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN);
1890 memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN);
1892 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
1894 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
1895 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) {
1896 return ODP_FIT_ERROR;
1899 if (flow->dl_type == htons(ETH_TYPE_VLAN)) {
1900 return parse_8021q_onward(attrs, present_attrs, out_of_range_attr,
1901 expected_attrs, flow, key, key_len);
1903 return parse_l3_onward(attrs, present_attrs, out_of_range_attr,
1904 expected_attrs, flow, key, key_len);
1907 /* Returns 'fitness' as a string, for use in debug messages. */
1909 odp_key_fitness_to_string(enum odp_key_fitness fitness)
1912 case ODP_FIT_PERFECT:
1914 case ODP_FIT_TOO_MUCH:
1916 case ODP_FIT_TOO_LITTLE:
1917 return "too_little";
1925 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
1926 * Netlink PID 'pid'. If 'cookie' is nonnull, adds a userdata attribute whose
1927 * contents contains 'cookie' and returns the offset within 'odp_actions' of
1928 * the start of the cookie. (If 'cookie' is null, then the return value is not
1931 odp_put_userspace_action(uint32_t pid, const union user_action_cookie *cookie,
1932 struct ofpbuf *odp_actions)
1936 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
1937 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
1939 nl_msg_put_unspec(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
1940 cookie, sizeof *cookie);
1942 nl_msg_end_nested(odp_actions, offset);
1944 return cookie ? odp_actions->size - NLA_ALIGN(sizeof *cookie) : 0;
1947 /* The commit_odp_actions() function and its helpers. */
1950 commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type,
1951 const void *key, size_t key_size)
1953 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
1954 nl_msg_put_unspec(odp_actions, key_type, key, key_size);
1955 nl_msg_end_nested(odp_actions, offset);
1959 commit_set_tun_id_action(const struct flow *flow, struct flow *base,
1960 struct ofpbuf *odp_actions)
1962 if (base->tunnel.tun_id == flow->tunnel.tun_id) {
1965 base->tunnel.tun_id = flow->tunnel.tun_id;
1967 commit_set_action(odp_actions, OVS_KEY_ATTR_TUN_ID,
1968 &base->tunnel.tun_id, sizeof(base->tunnel.tun_id));
1972 commit_set_ether_addr_action(const struct flow *flow, struct flow *base,
1973 struct ofpbuf *odp_actions)
1975 struct ovs_key_ethernet eth_key;
1977 if (eth_addr_equals(base->dl_src, flow->dl_src) &&
1978 eth_addr_equals(base->dl_dst, flow->dl_dst)) {
1982 memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN);
1983 memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
1985 memcpy(eth_key.eth_src, base->dl_src, ETH_ADDR_LEN);
1986 memcpy(eth_key.eth_dst, base->dl_dst, ETH_ADDR_LEN);
1988 commit_set_action(odp_actions, OVS_KEY_ATTR_ETHERNET,
1989 ð_key, sizeof(eth_key));
1993 commit_vlan_action(const struct flow *flow, struct flow *base,
1994 struct ofpbuf *odp_actions)
1996 if (base->vlan_tci == flow->vlan_tci) {
2000 if (base->vlan_tci & htons(VLAN_CFI)) {
2001 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
2004 if (flow->vlan_tci & htons(VLAN_CFI)) {
2005 struct ovs_action_push_vlan vlan;
2007 vlan.vlan_tpid = htons(ETH_TYPE_VLAN);
2008 vlan.vlan_tci = flow->vlan_tci;
2009 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
2010 &vlan, sizeof vlan);
2012 base->vlan_tci = flow->vlan_tci;
2016 commit_set_ipv4_action(const struct flow *flow, struct flow *base,
2017 struct ofpbuf *odp_actions)
2019 struct ovs_key_ipv4 ipv4_key;
2021 if (base->nw_src == flow->nw_src &&
2022 base->nw_dst == flow->nw_dst &&
2023 base->nw_tos == flow->nw_tos &&
2024 base->nw_ttl == flow->nw_ttl &&
2025 base->nw_frag == flow->nw_frag) {
2029 ipv4_key.ipv4_src = base->nw_src = flow->nw_src;
2030 ipv4_key.ipv4_dst = base->nw_dst = flow->nw_dst;
2031 ipv4_key.ipv4_tos = base->nw_tos = flow->nw_tos;
2032 ipv4_key.ipv4_ttl = base->nw_ttl = flow->nw_ttl;
2033 ipv4_key.ipv4_proto = base->nw_proto;
2034 ipv4_key.ipv4_frag = ovs_to_odp_frag(base->nw_frag);
2036 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4,
2037 &ipv4_key, sizeof(ipv4_key));
2041 commit_set_ipv6_action(const struct flow *flow, struct flow *base,
2042 struct ofpbuf *odp_actions)
2044 struct ovs_key_ipv6 ipv6_key;
2046 if (ipv6_addr_equals(&base->ipv6_src, &flow->ipv6_src) &&
2047 ipv6_addr_equals(&base->ipv6_dst, &flow->ipv6_dst) &&
2048 base->ipv6_label == flow->ipv6_label &&
2049 base->nw_tos == flow->nw_tos &&
2050 base->nw_ttl == flow->nw_ttl &&
2051 base->nw_frag == flow->nw_frag) {
2055 base->ipv6_src = flow->ipv6_src;
2056 memcpy(&ipv6_key.ipv6_src, &base->ipv6_src, sizeof(ipv6_key.ipv6_src));
2057 base->ipv6_dst = flow->ipv6_dst;
2058 memcpy(&ipv6_key.ipv6_dst, &base->ipv6_dst, sizeof(ipv6_key.ipv6_dst));
2060 ipv6_key.ipv6_label = base->ipv6_label = flow->ipv6_label;
2061 ipv6_key.ipv6_tclass = base->nw_tos = flow->nw_tos;
2062 ipv6_key.ipv6_hlimit = base->nw_ttl = flow->nw_ttl;
2063 ipv6_key.ipv6_proto = base->nw_proto;
2064 ipv6_key.ipv6_frag = ovs_to_odp_frag(base->nw_frag);
2066 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV6,
2067 &ipv6_key, sizeof(ipv6_key));
2071 commit_set_nw_action(const struct flow *flow, struct flow *base,
2072 struct ofpbuf *odp_actions)
2074 /* Check if flow really have an IP header. */
2075 if (!flow->nw_proto) {
2079 if (base->dl_type == htons(ETH_TYPE_IP)) {
2080 commit_set_ipv4_action(flow, base, odp_actions);
2081 } else if (base->dl_type == htons(ETH_TYPE_IPV6)) {
2082 commit_set_ipv6_action(flow, base, odp_actions);
2087 commit_set_port_action(const struct flow *flow, struct flow *base,
2088 struct ofpbuf *odp_actions)
2090 if (!base->tp_src && !base->tp_dst) {
2094 if (base->tp_src == flow->tp_src &&
2095 base->tp_dst == flow->tp_dst) {
2099 if (flow->nw_proto == IPPROTO_TCP) {
2100 struct ovs_key_tcp port_key;
2102 port_key.tcp_src = base->tp_src = flow->tp_src;
2103 port_key.tcp_dst = base->tp_dst = flow->tp_dst;
2105 commit_set_action(odp_actions, OVS_KEY_ATTR_TCP,
2106 &port_key, sizeof(port_key));
2108 } else if (flow->nw_proto == IPPROTO_UDP) {
2109 struct ovs_key_udp port_key;
2111 port_key.udp_src = base->tp_src = flow->tp_src;
2112 port_key.udp_dst = base->tp_dst = flow->tp_dst;
2114 commit_set_action(odp_actions, OVS_KEY_ATTR_UDP,
2115 &port_key, sizeof(port_key));
2120 commit_set_priority_action(const struct flow *flow, struct flow *base,
2121 struct ofpbuf *odp_actions)
2123 if (base->skb_priority == flow->skb_priority) {
2126 base->skb_priority = flow->skb_priority;
2128 commit_set_action(odp_actions, OVS_KEY_ATTR_PRIORITY,
2129 &base->skb_priority, sizeof(base->skb_priority));
2132 /* If any of the flow key data that ODP actions can modify are different in
2133 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
2134 * key from 'base' into 'flow', and then changes 'base' the same way. */
2136 commit_odp_actions(const struct flow *flow, struct flow *base,
2137 struct ofpbuf *odp_actions)
2139 commit_set_tun_id_action(flow, base, odp_actions);
2140 commit_set_ether_addr_action(flow, base, odp_actions);
2141 commit_vlan_action(flow, base, odp_actions);
2142 commit_set_nw_action(flow, base, odp_actions);
2143 commit_set_port_action(flow, base, odp_actions);
2144 commit_set_priority_action(flow, base, odp_actions);