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_TUNNEL: return "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, "%"PRIu32, 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_TUNNEL: return -2;
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 tunnel_key_attr_len(int type)
679 case OVS_TUNNEL_KEY_ATTR_ID: return 8;
680 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: return 4;
681 case OVS_TUNNEL_KEY_ATTR_IPV4_DST: return 4;
682 case OVS_TUNNEL_KEY_ATTR_TOS: return 1;
683 case OVS_TUNNEL_KEY_ATTR_TTL: return 1;
684 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT: return 0;
685 case OVS_TUNNEL_KEY_ATTR_CSUM: return 0;
686 case __OVS_TUNNEL_KEY_ATTR_MAX:
692 static enum odp_key_fitness
693 tun_key_from_attr(const struct nlattr *attr, struct flow_tnl *tun)
696 const struct nlattr *a;
698 bool unknown = false;
700 NL_NESTED_FOR_EACH(a, left, attr) {
701 uint16_t type = nl_attr_type(a);
702 size_t len = nl_attr_get_size(a);
703 int expected_len = tunnel_key_attr_len(type);
705 if (len != expected_len && expected_len >= 0) {
706 return ODP_FIT_ERROR;
710 case OVS_TUNNEL_KEY_ATTR_ID:
711 tun->tun_id = nl_attr_get_be64(a);
712 tun->flags |= FLOW_TNL_F_KEY;
714 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
715 tun->ip_src = nl_attr_get_be32(a);
717 case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
718 tun->ip_dst = nl_attr_get_be32(a);
720 case OVS_TUNNEL_KEY_ATTR_TOS:
721 tun->ip_tos = nl_attr_get_u8(a);
723 case OVS_TUNNEL_KEY_ATTR_TTL:
724 tun->ip_ttl = nl_attr_get_u8(a);
727 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
728 tun->flags |= FLOW_TNL_F_DONT_FRAGMENT;
730 case OVS_TUNNEL_KEY_ATTR_CSUM:
731 tun->flags |= FLOW_TNL_F_CSUM;
734 /* Allow this to show up as unexpected, if there are unknown
735 * tunnel attribute, eventually resulting in ODP_FIT_TOO_MUCH. */
742 return ODP_FIT_ERROR;
745 return ODP_FIT_TOO_MUCH;
747 return ODP_FIT_PERFECT;
751 tun_key_to_attr(struct ofpbuf *a, const struct flow_tnl *tun_key)
755 tun_key_ofs = nl_msg_start_nested(a, OVS_KEY_ATTR_TUNNEL);
757 if (tun_key->flags & FLOW_TNL_F_KEY) {
758 nl_msg_put_be64(a, OVS_TUNNEL_KEY_ATTR_ID, tun_key->tun_id);
760 if (tun_key->ip_src) {
761 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, tun_key->ip_src);
763 if (tun_key->ip_dst) {
764 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_DST, tun_key->ip_dst);
766 if (tun_key->ip_tos) {
767 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TOS, tun_key->ip_tos);
769 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TTL, tun_key->ip_ttl);
770 if (tun_key->flags & FLOW_TNL_F_DONT_FRAGMENT) {
771 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT);
773 if (tun_key->flags & FLOW_TNL_F_CSUM) {
774 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_CSUM);
777 nl_msg_end_nested(a, tun_key_ofs);
781 format_odp_key_attr(const struct nlattr *a, struct ds *ds)
783 const struct ovs_key_ethernet *eth_key;
784 const struct ovs_key_ipv4 *ipv4_key;
785 const struct ovs_key_ipv6 *ipv6_key;
786 const struct ovs_key_tcp *tcp_key;
787 const struct ovs_key_udp *udp_key;
788 const struct ovs_key_icmp *icmp_key;
789 const struct ovs_key_icmpv6 *icmpv6_key;
790 const struct ovs_key_arp *arp_key;
791 const struct ovs_key_nd *nd_key;
792 struct flow_tnl tun_key;
793 enum ovs_key_attr attr = nl_attr_type(a);
796 ds_put_cstr(ds, ovs_key_attr_to_string(attr));
797 expected_len = odp_flow_key_attr_len(nl_attr_type(a));
798 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
799 ds_put_format(ds, "(bad length %zu, expected %d)",
801 odp_flow_key_attr_len(nl_attr_type(a)));
802 format_generic_odp_key(a, ds);
807 case OVS_KEY_ATTR_ENCAP:
808 ds_put_cstr(ds, "(");
809 if (nl_attr_get_size(a)) {
810 odp_flow_key_format(nl_attr_get(a), nl_attr_get_size(a), ds);
812 ds_put_char(ds, ')');
815 case OVS_KEY_ATTR_PRIORITY:
816 ds_put_format(ds, "(%#"PRIx32")", nl_attr_get_u32(a));
819 case OVS_KEY_ATTR_SKB_MARK:
820 ds_put_format(ds, "(%#"PRIx32")", nl_attr_get_u32(a));
823 case OVS_KEY_ATTR_TUN_ID:
824 ds_put_format(ds, "(%#"PRIx64")", ntohll(nl_attr_get_be64(a)));
827 case OVS_KEY_ATTR_TUNNEL:
828 memset(&tun_key, 0, sizeof tun_key);
829 if (tun_key_from_attr(a, &tun_key) == ODP_FIT_ERROR) {
830 ds_put_format(ds, "(error)");
832 ds_put_format(ds, "(tun_id=0x%"PRIx64",src="IP_FMT",dst="IP_FMT","
833 "tos=0x%"PRIx8",ttl=%"PRIu8",flags(",
834 ntohll(tun_key.tun_id),
835 IP_ARGS(&tun_key.ip_src),
836 IP_ARGS(&tun_key.ip_dst),
837 tun_key.ip_tos, tun_key.ip_ttl);
839 format_flags(ds, flow_tun_flag_to_string,
840 (uint32_t) tun_key.flags, ',');
841 ds_put_format(ds, "))");
846 case OVS_KEY_ATTR_IN_PORT:
847 ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a));
850 case OVS_KEY_ATTR_ETHERNET:
851 eth_key = nl_attr_get(a);
852 ds_put_format(ds, "(src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT")",
853 ETH_ADDR_ARGS(eth_key->eth_src),
854 ETH_ADDR_ARGS(eth_key->eth_dst));
857 case OVS_KEY_ATTR_VLAN:
858 ds_put_char(ds, '(');
859 format_vlan_tci(ds, nl_attr_get_be16(a));
860 ds_put_char(ds, ')');
863 case OVS_KEY_ATTR_ETHERTYPE:
864 ds_put_format(ds, "(0x%04"PRIx16")",
865 ntohs(nl_attr_get_be16(a)));
868 case OVS_KEY_ATTR_IPV4:
869 ipv4_key = nl_attr_get(a);
870 ds_put_format(ds, "(src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
871 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s)",
872 IP_ARGS(&ipv4_key->ipv4_src),
873 IP_ARGS(&ipv4_key->ipv4_dst),
874 ipv4_key->ipv4_proto, ipv4_key->ipv4_tos,
876 ovs_frag_type_to_string(ipv4_key->ipv4_frag));
879 case OVS_KEY_ATTR_IPV6: {
880 char src_str[INET6_ADDRSTRLEN];
881 char dst_str[INET6_ADDRSTRLEN];
883 ipv6_key = nl_attr_get(a);
884 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
885 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
887 ds_put_format(ds, "(src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8
888 ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s)",
889 src_str, dst_str, ntohl(ipv6_key->ipv6_label),
890 ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass,
891 ipv6_key->ipv6_hlimit,
892 ovs_frag_type_to_string(ipv6_key->ipv6_frag));
896 case OVS_KEY_ATTR_TCP:
897 tcp_key = nl_attr_get(a);
898 ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
899 ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst));
902 case OVS_KEY_ATTR_UDP:
903 udp_key = nl_attr_get(a);
904 ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
905 ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst));
908 case OVS_KEY_ATTR_ICMP:
909 icmp_key = nl_attr_get(a);
910 ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")",
911 icmp_key->icmp_type, icmp_key->icmp_code);
914 case OVS_KEY_ATTR_ICMPV6:
915 icmpv6_key = nl_attr_get(a);
916 ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")",
917 icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code);
920 case OVS_KEY_ATTR_ARP:
921 arp_key = nl_attr_get(a);
922 ds_put_format(ds, "(sip="IP_FMT",tip="IP_FMT",op=%"PRIu16","
923 "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT")",
924 IP_ARGS(&arp_key->arp_sip), IP_ARGS(&arp_key->arp_tip),
925 ntohs(arp_key->arp_op), ETH_ADDR_ARGS(arp_key->arp_sha),
926 ETH_ADDR_ARGS(arp_key->arp_tha));
929 case OVS_KEY_ATTR_ND: {
930 char target[INET6_ADDRSTRLEN];
932 nd_key = nl_attr_get(a);
933 inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target);
935 ds_put_format(ds, "(target=%s", target);
936 if (!eth_addr_is_zero(nd_key->nd_sll)) {
937 ds_put_format(ds, ",sll="ETH_ADDR_FMT,
938 ETH_ADDR_ARGS(nd_key->nd_sll));
940 if (!eth_addr_is_zero(nd_key->nd_tll)) {
941 ds_put_format(ds, ",tll="ETH_ADDR_FMT,
942 ETH_ADDR_ARGS(nd_key->nd_tll));
944 ds_put_char(ds, ')');
948 case OVS_KEY_ATTR_UNSPEC:
949 case __OVS_KEY_ATTR_MAX:
951 format_generic_odp_key(a, ds);
956 /* Appends to 'ds' a string representation of the 'key_len' bytes of
957 * OVS_KEY_ATTR_* attributes in 'key'. */
959 odp_flow_key_format(const struct nlattr *key, size_t key_len, struct ds *ds)
962 const struct nlattr *a;
965 NL_ATTR_FOR_EACH (a, left, key, key_len) {
967 ds_put_char(ds, ',');
969 format_odp_key_attr(a, ds);
974 if (left == key_len) {
975 ds_put_cstr(ds, "<empty>");
977 ds_put_format(ds, ",***%u leftover bytes*** (", left);
978 for (i = 0; i < left; i++) {
979 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
981 ds_put_char(ds, ')');
984 ds_put_cstr(ds, "<empty>");
989 put_nd_key(int n, const char *nd_target_s,
990 const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *key)
992 struct ovs_key_nd nd_key;
994 memset(&nd_key, 0, sizeof nd_key);
995 if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
999 memcpy(nd_key.nd_sll, nd_sll, ETH_ADDR_LEN);
1002 memcpy(nd_key.nd_tll, nd_tll, ETH_ADDR_LEN);
1004 nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, &nd_key, sizeof nd_key);
1009 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
1011 if (!strcasecmp(s, "no")) {
1012 *type = OVS_FRAG_TYPE_NONE;
1013 } else if (!strcasecmp(s, "first")) {
1014 *type = OVS_FRAG_TYPE_FIRST;
1015 } else if (!strcasecmp(s, "later")) {
1016 *type = OVS_FRAG_TYPE_LATER;
1024 parse_odp_key_attr(const char *s, const struct simap *port_names,
1027 /* Many of the sscanf calls in this function use oversized destination
1028 * fields because some sscanf() implementations truncate the range of %i
1029 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
1030 * value of 0x7fff. The other alternatives are to allow only a single
1031 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
1034 * The tun_id parser has to use an alternative approach because there is no
1035 * type larger than 64 bits. */
1038 unsigned long long int priority;
1041 if (sscanf(s, "skb_priority(%llx)%n", &priority, &n) > 0 && n > 0) {
1042 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1048 unsigned long long int mark;
1051 if (sscanf(s, "skb_mark(%llx)%n", &mark, &n) > 0 && n > 0) {
1052 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1061 if (sscanf(s, "tun_id(%31[x0123456789abcdefABCDEF])%n",
1062 tun_id_s, &n) > 0 && n > 0) {
1063 uint64_t tun_id = strtoull(tun_id_s, NULL, 0);
1064 nl_msg_put_be64(key, OVS_KEY_ATTR_TUN_ID, htonll(tun_id));
1072 struct flow_tnl tun_key;
1075 if (sscanf(s, "tunnel(tun_id=%31[x0123456789abcdefABCDEF],"
1076 "src="IP_SCAN_FMT",dst="IP_SCAN_FMT
1077 ",tos=%i,ttl=%i,flags%n", tun_id_s,
1078 IP_SCAN_ARGS(&tun_key.ip_src),
1079 IP_SCAN_ARGS(&tun_key.ip_dst), &tos, &ttl,
1084 tun_key.tun_id = htonll(strtoull(tun_id_s, NULL, 0));
1085 tun_key.ip_tos = tos;
1086 tun_key.ip_ttl = ttl;
1087 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1088 tun_key.flags = (uint16_t) flags;
1098 tun_key_to_attr(key, &tun_key);
1104 unsigned long long int in_port;
1107 if (sscanf(s, "in_port(%lli)%n", &in_port, &n) > 0 && n > 0) {
1108 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1113 if (port_names && !strncmp(s, "in_port(", 8)) {
1115 const struct simap_node *node;
1119 name_len = strcspn(s, ")");
1120 node = simap_find_len(port_names, name, name_len);
1122 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, node->data);
1123 return 8 + name_len + 1;
1128 struct ovs_key_ethernet eth_key;
1132 "eth(src="ETH_ADDR_SCAN_FMT",dst="ETH_ADDR_SCAN_FMT")%n",
1133 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1134 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n) > 0 && n > 0) {
1135 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1136 ð_key, sizeof eth_key);
1147 if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i)%n", &vid, &pcp, &n) > 0
1149 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1150 htons((vid << VLAN_VID_SHIFT) |
1151 (pcp << VLAN_PCP_SHIFT) |
1154 } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i,cfi=%i)%n",
1155 &vid, &pcp, &cfi, &n) > 0
1157 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1158 htons((vid << VLAN_VID_SHIFT) |
1159 (pcp << VLAN_PCP_SHIFT) |
1160 (cfi ? VLAN_CFI : 0)));
1169 if (sscanf(s, "eth_type(%i)%n", ð_type, &n) > 0 && n > 0) {
1170 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1182 enum ovs_frag_type ipv4_frag;
1185 if (sscanf(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
1186 "proto=%i,tos=%i,ttl=%i,frag=%7[a-z])%n",
1187 IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_dst),
1188 &ipv4_proto, &ipv4_tos, &ipv4_ttl, frag, &n) > 0
1190 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1191 struct ovs_key_ipv4 ipv4_key;
1193 ipv4_key.ipv4_src = ipv4_src;
1194 ipv4_key.ipv4_dst = ipv4_dst;
1195 ipv4_key.ipv4_proto = ipv4_proto;
1196 ipv4_key.ipv4_tos = ipv4_tos;
1197 ipv4_key.ipv4_ttl = ipv4_ttl;
1198 ipv4_key.ipv4_frag = ipv4_frag;
1199 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1200 &ipv4_key, sizeof ipv4_key);
1206 char ipv6_src_s[IPV6_SCAN_LEN + 1];
1207 char ipv6_dst_s[IPV6_SCAN_LEN + 1];
1213 enum ovs_frag_type ipv6_frag;
1216 if (sscanf(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
1217 "label=%i,proto=%i,tclass=%i,hlimit=%i,frag=%7[a-z])%n",
1218 ipv6_src_s, ipv6_dst_s, &ipv6_label,
1219 &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n) > 0
1221 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
1222 struct ovs_key_ipv6 ipv6_key;
1224 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
1225 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
1228 ipv6_key.ipv6_label = htonl(ipv6_label);
1229 ipv6_key.ipv6_proto = ipv6_proto;
1230 ipv6_key.ipv6_tclass = ipv6_tclass;
1231 ipv6_key.ipv6_hlimit = ipv6_hlimit;
1232 ipv6_key.ipv6_frag = ipv6_frag;
1233 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
1234 &ipv6_key, sizeof ipv6_key);
1244 if (sscanf(s, "tcp(src=%i,dst=%i)%n",&tcp_src, &tcp_dst, &n) > 0
1246 struct ovs_key_tcp tcp_key;
1248 tcp_key.tcp_src = htons(tcp_src);
1249 tcp_key.tcp_dst = htons(tcp_dst);
1250 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
1260 if (sscanf(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n) > 0
1262 struct ovs_key_udp udp_key;
1264 udp_key.udp_src = htons(udp_src);
1265 udp_key.udp_dst = htons(udp_dst);
1266 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
1276 if (sscanf(s, "icmp(type=%i,code=%i)%n",
1277 &icmp_type, &icmp_code, &n) > 0
1279 struct ovs_key_icmp icmp_key;
1281 icmp_key.icmp_type = icmp_type;
1282 icmp_key.icmp_code = icmp_code;
1283 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
1284 &icmp_key, sizeof icmp_key);
1290 struct ovs_key_icmpv6 icmpv6_key;
1293 if (sscanf(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
1294 &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,&n) > 0
1296 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
1297 &icmpv6_key, sizeof icmpv6_key);
1306 uint8_t arp_sha[ETH_ADDR_LEN];
1307 uint8_t arp_tha[ETH_ADDR_LEN];
1310 if (sscanf(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
1311 "op=%i,sha="ETH_ADDR_SCAN_FMT",tha="ETH_ADDR_SCAN_FMT")%n",
1312 IP_SCAN_ARGS(&arp_sip),
1313 IP_SCAN_ARGS(&arp_tip),
1315 ETH_ADDR_SCAN_ARGS(arp_sha),
1316 ETH_ADDR_SCAN_ARGS(arp_tha), &n) > 0 && n > 0) {
1317 struct ovs_key_arp arp_key;
1319 memset(&arp_key, 0, sizeof arp_key);
1320 arp_key.arp_sip = arp_sip;
1321 arp_key.arp_tip = arp_tip;
1322 arp_key.arp_op = htons(arp_op);
1323 memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
1324 memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
1325 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
1331 char nd_target_s[IPV6_SCAN_LEN + 1];
1332 uint8_t nd_sll[ETH_ADDR_LEN];
1333 uint8_t nd_tll[ETH_ADDR_LEN];
1336 if (sscanf(s, "nd(target="IPV6_SCAN_FMT")%n",
1337 nd_target_s, &n) > 0 && n > 0) {
1338 return put_nd_key(n, nd_target_s, NULL, NULL, key);
1340 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT")%n",
1341 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n) > 0
1343 return put_nd_key(n, nd_target_s, nd_sll, NULL, key);
1345 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",tll="ETH_ADDR_SCAN_FMT")%n",
1346 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
1348 return put_nd_key(n, nd_target_s, NULL, nd_tll, key);
1350 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT","
1351 "tll="ETH_ADDR_SCAN_FMT")%n",
1352 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
1353 ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
1355 return put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
1359 if (!strncmp(s, "encap(", 6)) {
1360 const char *start = s;
1363 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
1369 s += strspn(s, ", \t\r\n");
1372 } else if (*s == ')') {
1376 retval = parse_odp_key_attr(s, port_names, key);
1384 nl_msg_end_nested(key, encap);
1392 /* Parses the string representation of a datapath flow key, in the
1393 * format output by odp_flow_key_format(). Returns 0 if successful,
1394 * otherwise a positive errno value. On success, the flow key is
1395 * appended to 'key' as a series of Netlink attributes. On failure, no
1396 * data is appended to 'key'. Either way, 'key''s data might be
1399 * If 'port_names' is nonnull, it points to an simap that maps from a port name
1400 * to a port number. (Port names may be used instead of port numbers in
1403 * On success, the attributes appended to 'key' are individually syntactically
1404 * valid, but they may not be valid as a sequence. 'key' might, for example,
1405 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
1407 odp_flow_key_from_string(const char *s, const struct simap *port_names,
1410 const size_t old_size = key->size;
1414 s += strspn(s, delimiters);
1419 retval = parse_odp_key_attr(s, port_names, key);
1421 key->size = old_size;
1431 ovs_to_odp_frag(uint8_t nw_frag)
1433 return (nw_frag == 0 ? OVS_FRAG_TYPE_NONE
1434 : nw_frag == FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST
1435 : OVS_FRAG_TYPE_LATER);
1438 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
1440 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
1441 * capable of being expanded to allow for that much space. */
1443 odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow)
1445 struct ovs_key_ethernet *eth_key;
1448 if (flow->skb_priority) {
1449 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, flow->skb_priority);
1452 if (flow->tunnel.tun_id != htonll(0)) {
1453 nl_msg_put_be64(buf, OVS_KEY_ATTR_TUN_ID, flow->tunnel.tun_id);
1456 if (flow->skb_mark) {
1457 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, flow->skb_mark);
1460 if (flow->in_port != OFPP_NONE && flow->in_port != OFPP_CONTROLLER) {
1461 nl_msg_put_u32(buf, OVS_KEY_ATTR_IN_PORT,
1462 ofp_port_to_odp_port(flow->in_port));
1465 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
1467 memcpy(eth_key->eth_src, flow->dl_src, ETH_ADDR_LEN);
1468 memcpy(eth_key->eth_dst, flow->dl_dst, ETH_ADDR_LEN);
1470 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
1471 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
1472 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, flow->vlan_tci);
1473 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
1474 if (flow->vlan_tci == htons(0)) {
1481 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
1485 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, flow->dl_type);
1487 if (flow->dl_type == htons(ETH_TYPE_IP)) {
1488 struct ovs_key_ipv4 *ipv4_key;
1490 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
1492 ipv4_key->ipv4_src = flow->nw_src;
1493 ipv4_key->ipv4_dst = flow->nw_dst;
1494 ipv4_key->ipv4_proto = flow->nw_proto;
1495 ipv4_key->ipv4_tos = flow->nw_tos;
1496 ipv4_key->ipv4_ttl = flow->nw_ttl;
1497 ipv4_key->ipv4_frag = ovs_to_odp_frag(flow->nw_frag);
1498 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
1499 struct ovs_key_ipv6 *ipv6_key;
1501 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
1503 memcpy(ipv6_key->ipv6_src, &flow->ipv6_src, sizeof ipv6_key->ipv6_src);
1504 memcpy(ipv6_key->ipv6_dst, &flow->ipv6_dst, sizeof ipv6_key->ipv6_dst);
1505 ipv6_key->ipv6_label = flow->ipv6_label;
1506 ipv6_key->ipv6_proto = flow->nw_proto;
1507 ipv6_key->ipv6_tclass = flow->nw_tos;
1508 ipv6_key->ipv6_hlimit = flow->nw_ttl;
1509 ipv6_key->ipv6_frag = ovs_to_odp_frag(flow->nw_frag);
1510 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
1511 flow->dl_type == htons(ETH_TYPE_RARP)) {
1512 struct ovs_key_arp *arp_key;
1514 arp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ARP,
1516 memset(arp_key, 0, sizeof *arp_key);
1517 arp_key->arp_sip = flow->nw_src;
1518 arp_key->arp_tip = flow->nw_dst;
1519 arp_key->arp_op = htons(flow->nw_proto);
1520 memcpy(arp_key->arp_sha, flow->arp_sha, ETH_ADDR_LEN);
1521 memcpy(arp_key->arp_tha, flow->arp_tha, ETH_ADDR_LEN);
1524 if ((flow->dl_type == htons(ETH_TYPE_IP)
1525 || flow->dl_type == htons(ETH_TYPE_IPV6))
1526 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1528 if (flow->nw_proto == IPPROTO_TCP) {
1529 struct ovs_key_tcp *tcp_key;
1531 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
1533 tcp_key->tcp_src = flow->tp_src;
1534 tcp_key->tcp_dst = flow->tp_dst;
1535 } else if (flow->nw_proto == IPPROTO_UDP) {
1536 struct ovs_key_udp *udp_key;
1538 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
1540 udp_key->udp_src = flow->tp_src;
1541 udp_key->udp_dst = flow->tp_dst;
1542 } else if (flow->dl_type == htons(ETH_TYPE_IP)
1543 && flow->nw_proto == IPPROTO_ICMP) {
1544 struct ovs_key_icmp *icmp_key;
1546 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
1548 icmp_key->icmp_type = ntohs(flow->tp_src);
1549 icmp_key->icmp_code = ntohs(flow->tp_dst);
1550 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
1551 && flow->nw_proto == IPPROTO_ICMPV6) {
1552 struct ovs_key_icmpv6 *icmpv6_key;
1554 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
1555 sizeof *icmpv6_key);
1556 icmpv6_key->icmpv6_type = ntohs(flow->tp_src);
1557 icmpv6_key->icmpv6_code = ntohs(flow->tp_dst);
1559 if (icmpv6_key->icmpv6_type == ND_NEIGHBOR_SOLICIT
1560 || icmpv6_key->icmpv6_type == ND_NEIGHBOR_ADVERT) {
1561 struct ovs_key_nd *nd_key;
1563 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
1565 memcpy(nd_key->nd_target, &flow->nd_target,
1566 sizeof nd_key->nd_target);
1567 memcpy(nd_key->nd_sll, flow->arp_sha, ETH_ADDR_LEN);
1568 memcpy(nd_key->nd_tll, flow->arp_tha, ETH_ADDR_LEN);
1575 nl_msg_end_nested(buf, encap);
1580 odp_flow_key_hash(const struct nlattr *key, size_t key_len)
1582 BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t)));
1583 return hash_words((const uint32_t *) key, key_len / sizeof(uint32_t), 0);
1587 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
1588 uint64_t attrs, int out_of_range_attr,
1589 const struct nlattr *key, size_t key_len)
1594 if (VLOG_DROP_DBG(rl)) {
1599 for (i = 0; i < 64; i++) {
1600 if (attrs & (UINT64_C(1) << i)) {
1601 ds_put_format(&s, " %s", ovs_key_attr_to_string(i));
1604 if (out_of_range_attr) {
1605 ds_put_format(&s, " %d (and possibly others)", out_of_range_attr);
1608 ds_put_cstr(&s, ": ");
1609 odp_flow_key_format(key, key_len, &s);
1611 VLOG_DBG("%s:%s", title, ds_cstr(&s));
1616 odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow)
1618 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1620 if (odp_frag > OVS_FRAG_TYPE_LATER) {
1621 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag);
1625 if (odp_frag != OVS_FRAG_TYPE_NONE) {
1626 flow->nw_frag |= FLOW_NW_FRAG_ANY;
1627 if (odp_frag == OVS_FRAG_TYPE_LATER) {
1628 flow->nw_frag |= FLOW_NW_FRAG_LATER;
1635 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
1636 const struct nlattr *attrs[], uint64_t *present_attrsp,
1637 int *out_of_range_attrp)
1639 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
1640 const struct nlattr *nla;
1641 uint64_t present_attrs;
1645 *out_of_range_attrp = 0;
1646 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
1647 uint16_t type = nl_attr_type(nla);
1648 size_t len = nl_attr_get_size(nla);
1649 int expected_len = odp_flow_key_attr_len(type);
1651 if (len != expected_len && expected_len >= 0) {
1652 VLOG_ERR_RL(&rl, "attribute %s has length %zu but should have "
1653 "length %d", ovs_key_attr_to_string(type),
1658 if (type >= CHAR_BIT * sizeof present_attrs) {
1659 *out_of_range_attrp = type;
1661 if (present_attrs & (UINT64_C(1) << type)) {
1662 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
1663 ovs_key_attr_to_string(type));
1667 present_attrs |= UINT64_C(1) << type;
1672 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
1676 *present_attrsp = present_attrs;
1680 static enum odp_key_fitness
1681 check_expectations(uint64_t present_attrs, int out_of_range_attr,
1682 uint64_t expected_attrs,
1683 const struct nlattr *key, size_t key_len)
1685 uint64_t missing_attrs;
1686 uint64_t extra_attrs;
1688 missing_attrs = expected_attrs & ~present_attrs;
1689 if (missing_attrs) {
1690 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
1691 log_odp_key_attributes(&rl, "expected but not present",
1692 missing_attrs, 0, key, key_len);
1693 return ODP_FIT_TOO_LITTLE;
1696 extra_attrs = present_attrs & ~expected_attrs;
1697 if (extra_attrs || out_of_range_attr) {
1698 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
1699 log_odp_key_attributes(&rl, "present but not expected",
1700 extra_attrs, out_of_range_attr, key, key_len);
1701 return ODP_FIT_TOO_MUCH;
1704 return ODP_FIT_PERFECT;
1708 parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
1709 uint64_t present_attrs, uint64_t *expected_attrs,
1712 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1714 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
1715 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
1716 if (ntohs(flow->dl_type) < 1536) {
1717 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
1718 ntohs(flow->dl_type));
1721 *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
1723 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
1728 static enum odp_key_fitness
1729 parse_l3_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
1730 uint64_t present_attrs, int out_of_range_attr,
1731 uint64_t expected_attrs, struct flow *flow,
1732 const struct nlattr *key, size_t key_len)
1734 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1736 if (flow->dl_type == htons(ETH_TYPE_IP)) {
1737 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
1738 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
1739 const struct ovs_key_ipv4 *ipv4_key;
1741 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
1742 flow->nw_src = ipv4_key->ipv4_src;
1743 flow->nw_dst = ipv4_key->ipv4_dst;
1744 flow->nw_proto = ipv4_key->ipv4_proto;
1745 flow->nw_tos = ipv4_key->ipv4_tos;
1746 flow->nw_ttl = ipv4_key->ipv4_ttl;
1747 if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) {
1748 return ODP_FIT_ERROR;
1751 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
1752 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
1753 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
1754 const struct ovs_key_ipv6 *ipv6_key;
1756 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
1757 memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src);
1758 memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst);
1759 flow->ipv6_label = ipv6_key->ipv6_label;
1760 flow->nw_proto = ipv6_key->ipv6_proto;
1761 flow->nw_tos = ipv6_key->ipv6_tclass;
1762 flow->nw_ttl = ipv6_key->ipv6_hlimit;
1763 if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) {
1764 return ODP_FIT_ERROR;
1767 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
1768 flow->dl_type == htons(ETH_TYPE_RARP)) {
1769 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
1770 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
1771 const struct ovs_key_arp *arp_key;
1773 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
1774 flow->nw_src = arp_key->arp_sip;
1775 flow->nw_dst = arp_key->arp_tip;
1776 if (arp_key->arp_op & htons(0xff00)) {
1777 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
1778 "key", ntohs(arp_key->arp_op));
1779 return ODP_FIT_ERROR;
1781 flow->nw_proto = ntohs(arp_key->arp_op);
1782 memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN);
1783 memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN);
1787 if (flow->nw_proto == IPPROTO_TCP
1788 && (flow->dl_type == htons(ETH_TYPE_IP) ||
1789 flow->dl_type == htons(ETH_TYPE_IPV6))
1790 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1791 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
1792 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
1793 const struct ovs_key_tcp *tcp_key;
1795 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
1796 flow->tp_src = tcp_key->tcp_src;
1797 flow->tp_dst = tcp_key->tcp_dst;
1799 } else if (flow->nw_proto == IPPROTO_UDP
1800 && (flow->dl_type == htons(ETH_TYPE_IP) ||
1801 flow->dl_type == htons(ETH_TYPE_IPV6))
1802 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1803 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
1804 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
1805 const struct ovs_key_udp *udp_key;
1807 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
1808 flow->tp_src = udp_key->udp_src;
1809 flow->tp_dst = udp_key->udp_dst;
1811 } else if (flow->nw_proto == IPPROTO_ICMP
1812 && flow->dl_type == htons(ETH_TYPE_IP)
1813 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1814 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
1815 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
1816 const struct ovs_key_icmp *icmp_key;
1818 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
1819 flow->tp_src = htons(icmp_key->icmp_type);
1820 flow->tp_dst = htons(icmp_key->icmp_code);
1822 } else if (flow->nw_proto == IPPROTO_ICMPV6
1823 && flow->dl_type == htons(ETH_TYPE_IPV6)
1824 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1825 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
1826 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
1827 const struct ovs_key_icmpv6 *icmpv6_key;
1829 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
1830 flow->tp_src = htons(icmpv6_key->icmpv6_type);
1831 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
1833 if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
1834 flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) {
1835 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
1836 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
1837 const struct ovs_key_nd *nd_key;
1839 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
1840 memcpy(&flow->nd_target, nd_key->nd_target,
1841 sizeof flow->nd_target);
1842 memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN);
1843 memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN);
1849 return check_expectations(present_attrs, out_of_range_attr, expected_attrs,
1853 /* Parse 802.1Q header then encapsulated L3 attributes. */
1854 static enum odp_key_fitness
1855 parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
1856 uint64_t present_attrs, int out_of_range_attr,
1857 uint64_t expected_attrs, struct flow *flow,
1858 const struct nlattr *key, size_t key_len)
1860 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1862 const struct nlattr *encap
1863 = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)
1864 ? attrs[OVS_KEY_ATTR_ENCAP] : NULL);
1865 enum odp_key_fitness encap_fitness;
1866 enum odp_key_fitness fitness;
1869 /* Calulate fitness of outer attributes. */
1870 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
1871 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
1872 fitness = check_expectations(present_attrs, out_of_range_attr,
1873 expected_attrs, key, key_len);
1875 /* Get the VLAN TCI value. */
1876 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) {
1877 return ODP_FIT_TOO_LITTLE;
1879 tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
1880 if (tci == htons(0)) {
1881 /* Corner case for a truncated 802.1Q header. */
1882 if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) {
1883 return ODP_FIT_TOO_MUCH;
1886 } else if (!(tci & htons(VLAN_CFI))) {
1887 VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero "
1888 "but CFI bit is not set", ntohs(tci));
1889 return ODP_FIT_ERROR;
1893 * Remove the TPID from dl_type since it's not the real Ethertype. */
1894 flow->vlan_tci = tci;
1895 flow->dl_type = htons(0);
1897 /* Now parse the encapsulated attributes. */
1898 if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
1899 attrs, &present_attrs, &out_of_range_attr)) {
1900 return ODP_FIT_ERROR;
1904 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) {
1905 return ODP_FIT_ERROR;
1907 encap_fitness = parse_l3_onward(attrs, present_attrs, out_of_range_attr,
1908 expected_attrs, flow, key, key_len);
1910 /* The overall fitness is the worse of the outer and inner attributes. */
1911 return MAX(fitness, encap_fitness);
1914 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
1915 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
1916 * 'key' fits our expectations for what a flow key should contain.
1918 * This function doesn't take the packet itself as an argument because none of
1919 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
1920 * it is always possible to infer which additional attribute(s) should appear
1921 * by looking at the attributes for lower-level protocols, e.g. if the network
1922 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
1923 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
1924 * must be absent. */
1925 enum odp_key_fitness
1926 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
1929 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1930 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
1931 uint64_t expected_attrs;
1932 uint64_t present_attrs;
1933 int out_of_range_attr;
1935 memset(flow, 0, sizeof *flow);
1937 /* Parse attributes. */
1938 if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs,
1939 &out_of_range_attr)) {
1940 return ODP_FIT_ERROR;
1945 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
1946 flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
1947 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
1950 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK)) {
1951 flow->skb_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_SKB_MARK]);
1952 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK;
1955 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUN_ID)) {
1956 flow->tunnel.tun_id = nl_attr_get_be64(attrs[OVS_KEY_ATTR_TUN_ID]);
1957 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUN_ID;
1960 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
1961 uint32_t in_port = nl_attr_get_u32(attrs[OVS_KEY_ATTR_IN_PORT]);
1962 if (in_port >= UINT16_MAX || in_port >= OFPP_MAX) {
1963 VLOG_ERR_RL(&rl, "in_port %"PRIu32" out of supported range",
1965 return ODP_FIT_ERROR;
1967 flow->in_port = odp_port_to_ofp_port(in_port);
1968 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
1970 flow->in_port = OFPP_NONE;
1973 /* Ethernet header. */
1974 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
1975 const struct ovs_key_ethernet *eth_key;
1977 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
1978 memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN);
1979 memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN);
1981 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
1983 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
1984 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) {
1985 return ODP_FIT_ERROR;
1988 if (flow->dl_type == htons(ETH_TYPE_VLAN)) {
1989 return parse_8021q_onward(attrs, present_attrs, out_of_range_attr,
1990 expected_attrs, flow, key, key_len);
1992 return parse_l3_onward(attrs, present_attrs, out_of_range_attr,
1993 expected_attrs, flow, key, key_len);
1996 /* Returns 'fitness' as a string, for use in debug messages. */
1998 odp_key_fitness_to_string(enum odp_key_fitness fitness)
2001 case ODP_FIT_PERFECT:
2003 case ODP_FIT_TOO_MUCH:
2005 case ODP_FIT_TOO_LITTLE:
2006 return "too_little";
2014 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
2015 * Netlink PID 'pid'. If 'cookie' is nonnull, adds a userdata attribute whose
2016 * contents contains 'cookie' and returns the offset within 'odp_actions' of
2017 * the start of the cookie. (If 'cookie' is null, then the return value is not
2020 odp_put_userspace_action(uint32_t pid, const union user_action_cookie *cookie,
2021 struct ofpbuf *odp_actions)
2025 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
2026 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
2028 nl_msg_put_unspec(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
2029 cookie, sizeof *cookie);
2031 nl_msg_end_nested(odp_actions, offset);
2033 return cookie ? odp_actions->size - NLA_ALIGN(sizeof *cookie) : 0;
2036 /* The commit_odp_actions() function and its helpers. */
2039 commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type,
2040 const void *key, size_t key_size)
2042 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
2043 nl_msg_put_unspec(odp_actions, key_type, key, key_size);
2044 nl_msg_end_nested(odp_actions, offset);
2048 commit_set_tun_id_action(const struct flow *flow, struct flow *base,
2049 struct ofpbuf *odp_actions)
2051 if (base->tunnel.tun_id == flow->tunnel.tun_id) {
2054 base->tunnel.tun_id = flow->tunnel.tun_id;
2056 commit_set_action(odp_actions, OVS_KEY_ATTR_TUN_ID,
2057 &base->tunnel.tun_id, sizeof(base->tunnel.tun_id));
2061 commit_set_ether_addr_action(const struct flow *flow, struct flow *base,
2062 struct ofpbuf *odp_actions)
2064 struct ovs_key_ethernet eth_key;
2066 if (eth_addr_equals(base->dl_src, flow->dl_src) &&
2067 eth_addr_equals(base->dl_dst, flow->dl_dst)) {
2071 memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN);
2072 memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
2074 memcpy(eth_key.eth_src, base->dl_src, ETH_ADDR_LEN);
2075 memcpy(eth_key.eth_dst, base->dl_dst, ETH_ADDR_LEN);
2077 commit_set_action(odp_actions, OVS_KEY_ATTR_ETHERNET,
2078 ð_key, sizeof(eth_key));
2082 commit_vlan_action(const struct flow *flow, struct flow *base,
2083 struct ofpbuf *odp_actions)
2085 if (base->vlan_tci == flow->vlan_tci) {
2089 if (base->vlan_tci & htons(VLAN_CFI)) {
2090 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
2093 if (flow->vlan_tci & htons(VLAN_CFI)) {
2094 struct ovs_action_push_vlan vlan;
2096 vlan.vlan_tpid = htons(ETH_TYPE_VLAN);
2097 vlan.vlan_tci = flow->vlan_tci;
2098 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
2099 &vlan, sizeof vlan);
2101 base->vlan_tci = flow->vlan_tci;
2105 commit_set_ipv4_action(const struct flow *flow, struct flow *base,
2106 struct ofpbuf *odp_actions)
2108 struct ovs_key_ipv4 ipv4_key;
2110 if (base->nw_src == flow->nw_src &&
2111 base->nw_dst == flow->nw_dst &&
2112 base->nw_tos == flow->nw_tos &&
2113 base->nw_ttl == flow->nw_ttl &&
2114 base->nw_frag == flow->nw_frag) {
2118 ipv4_key.ipv4_src = base->nw_src = flow->nw_src;
2119 ipv4_key.ipv4_dst = base->nw_dst = flow->nw_dst;
2120 ipv4_key.ipv4_tos = base->nw_tos = flow->nw_tos;
2121 ipv4_key.ipv4_ttl = base->nw_ttl = flow->nw_ttl;
2122 ipv4_key.ipv4_proto = base->nw_proto;
2123 ipv4_key.ipv4_frag = ovs_to_odp_frag(base->nw_frag);
2125 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4,
2126 &ipv4_key, sizeof(ipv4_key));
2130 commit_set_ipv6_action(const struct flow *flow, struct flow *base,
2131 struct ofpbuf *odp_actions)
2133 struct ovs_key_ipv6 ipv6_key;
2135 if (ipv6_addr_equals(&base->ipv6_src, &flow->ipv6_src) &&
2136 ipv6_addr_equals(&base->ipv6_dst, &flow->ipv6_dst) &&
2137 base->ipv6_label == flow->ipv6_label &&
2138 base->nw_tos == flow->nw_tos &&
2139 base->nw_ttl == flow->nw_ttl &&
2140 base->nw_frag == flow->nw_frag) {
2144 base->ipv6_src = flow->ipv6_src;
2145 memcpy(&ipv6_key.ipv6_src, &base->ipv6_src, sizeof(ipv6_key.ipv6_src));
2146 base->ipv6_dst = flow->ipv6_dst;
2147 memcpy(&ipv6_key.ipv6_dst, &base->ipv6_dst, sizeof(ipv6_key.ipv6_dst));
2149 ipv6_key.ipv6_label = base->ipv6_label = flow->ipv6_label;
2150 ipv6_key.ipv6_tclass = base->nw_tos = flow->nw_tos;
2151 ipv6_key.ipv6_hlimit = base->nw_ttl = flow->nw_ttl;
2152 ipv6_key.ipv6_proto = base->nw_proto;
2153 ipv6_key.ipv6_frag = ovs_to_odp_frag(base->nw_frag);
2155 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV6,
2156 &ipv6_key, sizeof(ipv6_key));
2160 commit_set_nw_action(const struct flow *flow, struct flow *base,
2161 struct ofpbuf *odp_actions)
2163 /* Check if flow really have an IP header. */
2164 if (!flow->nw_proto) {
2168 if (base->dl_type == htons(ETH_TYPE_IP)) {
2169 commit_set_ipv4_action(flow, base, odp_actions);
2170 } else if (base->dl_type == htons(ETH_TYPE_IPV6)) {
2171 commit_set_ipv6_action(flow, base, odp_actions);
2176 commit_set_port_action(const struct flow *flow, struct flow *base,
2177 struct ofpbuf *odp_actions)
2179 if (!base->tp_src && !base->tp_dst) {
2183 if (base->tp_src == flow->tp_src &&
2184 base->tp_dst == flow->tp_dst) {
2188 if (flow->nw_proto == IPPROTO_TCP) {
2189 struct ovs_key_tcp port_key;
2191 port_key.tcp_src = base->tp_src = flow->tp_src;
2192 port_key.tcp_dst = base->tp_dst = flow->tp_dst;
2194 commit_set_action(odp_actions, OVS_KEY_ATTR_TCP,
2195 &port_key, sizeof(port_key));
2197 } else if (flow->nw_proto == IPPROTO_UDP) {
2198 struct ovs_key_udp port_key;
2200 port_key.udp_src = base->tp_src = flow->tp_src;
2201 port_key.udp_dst = base->tp_dst = flow->tp_dst;
2203 commit_set_action(odp_actions, OVS_KEY_ATTR_UDP,
2204 &port_key, sizeof(port_key));
2209 commit_set_priority_action(const struct flow *flow, struct flow *base,
2210 struct ofpbuf *odp_actions)
2212 if (base->skb_priority == flow->skb_priority) {
2215 base->skb_priority = flow->skb_priority;
2217 commit_set_action(odp_actions, OVS_KEY_ATTR_PRIORITY,
2218 &base->skb_priority, sizeof(base->skb_priority));
2222 commit_set_skb_mark_action(const struct flow *flow, struct flow *base,
2223 struct ofpbuf *odp_actions)
2225 if (base->skb_mark == flow->skb_mark) {
2228 base->skb_mark = flow->skb_mark;
2230 commit_set_action(odp_actions, OVS_KEY_ATTR_SKB_MARK,
2231 &base->skb_mark, sizeof(base->skb_mark));
2233 /* If any of the flow key data that ODP actions can modify are different in
2234 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
2235 * key from 'base' into 'flow', and then changes 'base' the same way. */
2237 commit_odp_actions(const struct flow *flow, struct flow *base,
2238 struct ofpbuf *odp_actions)
2240 commit_set_tun_id_action(flow, base, odp_actions);
2241 commit_set_ether_addr_action(flow, base, odp_actions);
2242 commit_vlan_action(flow, base, odp_actions);
2243 commit_set_nw_action(flow, base, odp_actions);
2244 commit_set_port_action(flow, base, odp_actions);
2245 commit_set_priority_action(flow, base, odp_actions);
2246 commit_set_skb_mark_action(flow, base, odp_actions);