2 * Copyright (c) 2009, 2010, 2011 Nicira Networks.
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.
17 #include <arpa/inet.h>
23 #include <netinet/in.h>
24 #include <netinet/icmp6.h>
27 #include "byte-order.h"
29 #include "dynamic-string.h"
33 #include "openvswitch/tunnel.h"
40 VLOG_DEFINE_THIS_MODULE(odp_util);
42 /* The interface between userspace and kernel uses an "OVS_*" prefix.
43 * Since this is fairly non-specific for the OVS userspace components,
44 * "ODP_*" (Open vSwitch Datapath) is used as the prefix for
45 * interactions with the datapath.
48 /* The set of characters that may separate one action or one key attribute
50 static const char *delimiters = ", \t\r\n";
52 static int parse_odp_key_attr(const char *, const struct shash *port_names,
54 static void format_odp_key_attr(const struct nlattr *a, struct ds *ds);
56 /* Returns one the following for the action with the given OVS_ACTION_ATTR_*
59 * - For an action whose argument has a fixed length, returned that
60 * nonnegative length in bytes.
62 * - For an action with a variable-length argument, returns -2.
64 * - For an invalid 'type', returns -1. */
66 odp_action_len(uint16_t type)
68 if (type > OVS_ACTION_ATTR_MAX) {
72 switch ((enum ovs_action_attr) type) {
73 case OVS_ACTION_ATTR_OUTPUT: return sizeof(uint32_t);
74 case OVS_ACTION_ATTR_USERSPACE: return -2;
75 case OVS_ACTION_ATTR_PUSH_VLAN: return sizeof(struct ovs_action_push_vlan);
76 case OVS_ACTION_ATTR_POP_VLAN: return 0;
77 case OVS_ACTION_ATTR_SET: return -2;
78 case OVS_ACTION_ATTR_SAMPLE: return -2;
80 case OVS_ACTION_ATTR_UNSPEC:
81 case __OVS_ACTION_ATTR_MAX:
89 ovs_key_attr_to_string(enum ovs_key_attr attr)
91 static char unknown_attr[3 + INT_STRLEN(unsigned int) + 1];
94 case OVS_KEY_ATTR_UNSPEC: return "unspec";
95 case OVS_KEY_ATTR_ENCAP: return "encap";
96 case OVS_KEY_ATTR_PRIORITY: return "priority";
97 case OVS_KEY_ATTR_IN_PORT: return "in_port";
98 case OVS_KEY_ATTR_ETHERNET: return "eth";
99 case OVS_KEY_ATTR_VLAN: return "vlan";
100 case OVS_KEY_ATTR_ETHERTYPE: return "eth_type";
101 case OVS_KEY_ATTR_IPV4: return "ipv4";
102 case OVS_KEY_ATTR_IPV6: return "ipv6";
103 case OVS_KEY_ATTR_TCP: return "tcp";
104 case OVS_KEY_ATTR_UDP: return "udp";
105 case OVS_KEY_ATTR_ICMP: return "icmp";
106 case OVS_KEY_ATTR_ICMPV6: return "icmpv6";
107 case OVS_KEY_ATTR_ARP: return "arp";
108 case OVS_KEY_ATTR_ND: return "nd";
109 case OVS_KEY_ATTR_TUN_ID: return "tun_id";
111 case __OVS_KEY_ATTR_MAX:
113 snprintf(unknown_attr, sizeof unknown_attr, "key%u",
114 (unsigned int) attr);
119 static enum ovs_key_attr
120 ovs_key_attr_from_string(const char *s, size_t len)
122 enum ovs_key_attr attr;
124 for (attr = 0; attr <= OVS_KEY_ATTR_MAX; attr++) {
125 const char *attr_name = ovs_key_attr_to_string(attr);
126 if (strlen(attr_name) == len && !memcmp(s, attr_name, len)) {
131 return OVS_KEY_ATTR_UNSPEC;
135 format_generic_odp_action(struct ds *ds, const struct nlattr *a)
137 size_t len = nl_attr_get_size(a);
139 ds_put_format(ds, "action%"PRId16, nl_attr_type(a));
141 const uint8_t *unspec;
144 unspec = nl_attr_get(a);
145 for (i = 0; i < len; i++) {
146 ds_put_char(ds, i ? ' ': '(');
147 ds_put_format(ds, "%02x", unspec[i]);
149 ds_put_char(ds, ')');
154 format_odp_sample_action(struct ds *ds, const struct nlattr *attr)
156 static const struct nl_policy ovs_sample_policy[] = {
157 [OVS_SAMPLE_ATTR_PROBABILITY] = { .type = NL_A_U32 },
158 [OVS_SAMPLE_ATTR_ACTIONS] = { .type = NL_A_NESTED }
160 struct nlattr *a[ARRAY_SIZE(ovs_sample_policy)];
162 const struct nlattr *nla_acts;
165 ds_put_cstr(ds, "sample");
167 if (!nl_parse_nested(attr, ovs_sample_policy, a, ARRAY_SIZE(a))) {
168 ds_put_cstr(ds, "(error)");
172 percentage = (100.0 * nl_attr_get_u32(a[OVS_SAMPLE_ATTR_PROBABILITY])) /
175 ds_put_format(ds, "(sample=%.1f%%,", percentage);
177 ds_put_cstr(ds, "actions(");
178 nla_acts = nl_attr_get(a[OVS_SAMPLE_ATTR_ACTIONS]);
179 len = nl_attr_get_size(a[OVS_SAMPLE_ATTR_ACTIONS]);
180 format_odp_actions(ds, nla_acts, len);
181 ds_put_format(ds, "))");
185 format_odp_userspace_action(struct ds *ds, const struct nlattr *attr)
187 static const struct nl_policy ovs_userspace_policy[] = {
188 [OVS_USERSPACE_ATTR_PID] = { .type = NL_A_U32 },
189 [OVS_USERSPACE_ATTR_USERDATA] = { .type = NL_A_U64, .optional = true },
191 struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)];
193 if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) {
194 ds_put_cstr(ds, "userspace(error)");
198 ds_put_format(ds, "userspace(pid=%"PRIu32,
199 nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID]));
201 if (a[OVS_USERSPACE_ATTR_USERDATA]) {
202 uint64_t userdata = nl_attr_get_u64(a[OVS_USERSPACE_ATTR_USERDATA]);
203 struct user_action_cookie cookie;
205 memcpy(&cookie, &userdata, sizeof cookie);
207 if (cookie.type == USER_ACTION_COOKIE_CONTROLLER) {
208 ds_put_format(ds, ",controller,length=%"PRIu32, cookie.data);
209 } else if (cookie.type == USER_ACTION_COOKIE_SFLOW) {
210 ds_put_format(ds, ",sFlow,n_output=%"PRIu8","
211 "vid=%"PRIu16",pcp=%"PRIu8",ifindex=%"PRIu32,
212 cookie.n_output, vlan_tci_to_vid(cookie.vlan_tci),
213 vlan_tci_to_pcp(cookie.vlan_tci), cookie.data);
215 ds_put_format(ds, ",userdata=0x%"PRIx64, userdata);
219 ds_put_char(ds, ')');
223 format_vlan_tci(struct ds *ds, ovs_be16 vlan_tci)
225 ds_put_format(ds, "vid=%"PRIu16",pcp=%d",
226 vlan_tci_to_vid(vlan_tci),
227 vlan_tci_to_pcp(vlan_tci));
228 if (!(vlan_tci & htons(VLAN_CFI))) {
229 ds_put_cstr(ds, ",cfi=0");
234 format_odp_action(struct ds *ds, const struct nlattr *a)
237 enum ovs_action_attr type = nl_attr_type(a);
238 const struct ovs_action_push_vlan *vlan;
240 expected_len = odp_action_len(nl_attr_type(a));
241 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
242 ds_put_format(ds, "bad length %zu, expected %d for: ",
243 nl_attr_get_size(a), expected_len);
244 format_generic_odp_action(ds, a);
249 case OVS_ACTION_ATTR_OUTPUT:
250 ds_put_format(ds, "%"PRIu16, nl_attr_get_u32(a));
252 case OVS_ACTION_ATTR_USERSPACE:
253 format_odp_userspace_action(ds, a);
255 case OVS_ACTION_ATTR_SET:
256 ds_put_cstr(ds, "set(");
257 format_odp_key_attr(nl_attr_get(a), ds);
258 ds_put_cstr(ds, ")");
260 case OVS_ACTION_ATTR_PUSH_VLAN:
261 vlan = nl_attr_get(a);
262 ds_put_cstr(ds, "push_vlan(");
263 if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
264 ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
266 format_vlan_tci(ds, vlan->vlan_tci);
267 ds_put_char(ds, ')');
269 case OVS_ACTION_ATTR_POP_VLAN:
270 ds_put_cstr(ds, "pop_vlan");
272 case OVS_ACTION_ATTR_SAMPLE:
273 format_odp_sample_action(ds, a);
275 case OVS_ACTION_ATTR_UNSPEC:
276 case __OVS_ACTION_ATTR_MAX:
278 format_generic_odp_action(ds, a);
284 format_odp_actions(struct ds *ds, const struct nlattr *actions,
288 const struct nlattr *a;
291 NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
293 ds_put_char(ds, ',');
295 format_odp_action(ds, a);
298 if (left == actions_len) {
299 ds_put_cstr(ds, "<empty>");
301 ds_put_format(ds, ",***%u leftover bytes***", left);
304 ds_put_cstr(ds, "drop");
309 parse_odp_action(const char *s, const struct shash *port_names,
310 struct ofpbuf *actions)
312 /* Many of the sscanf calls in this function use oversized destination
313 * fields because some sscanf() implementations truncate the range of %i
314 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
315 * value of 0x7fff. The other alternatives are to allow only a single
316 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
319 * The tun_id parser has to use an alternative approach because there is no
320 * type larger than 64 bits. */
323 unsigned long long int port;
326 if (sscanf(s, "%lli%n", &port, &n) > 0 && n > 0) {
327 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port);
333 int len = strcspn(s, delimiters);
334 struct shash_node *node;
336 node = shash_find_len(port_names, s, len);
338 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT,
339 (uintptr_t) node->data);
345 unsigned long long int pid;
346 unsigned long long int length;
347 unsigned long long int ifindex;
353 if (sscanf(s, "userspace(pid=%lli)%n", &pid, &n) > 0 && n > 0) {
354 odp_put_userspace_action(pid, NULL, actions);
356 } else if (sscanf(s, "userspace(pid=%lli,controller,length=%lli)%n",
357 &pid, &length, &n) > 0 && n > 0) {
358 struct user_action_cookie cookie;
360 cookie.type = USER_ACTION_COOKIE_CONTROLLER;
362 cookie.vlan_tci = htons(0);
363 cookie.data = length;
364 odp_put_userspace_action(pid, &cookie, actions);
366 } else if (sscanf(s, "userspace(pid=%lli,sFlow,n_output=%i,vid=%i,"
367 "pcp=%i,ifindex=%lli)%n", &pid, &n_output,
368 &vid, &pcp, &ifindex, &n) > 0 && n > 0) {
369 struct user_action_cookie cookie;
372 tci = vid | (pcp << VLAN_PCP_SHIFT);
377 cookie.type = USER_ACTION_COOKIE_SFLOW;
378 cookie.n_output = n_output;
379 cookie.vlan_tci = htons(tci);
380 cookie.data = ifindex;
381 odp_put_userspace_action(pid, &cookie, actions);
383 } else if (sscanf(s, "userspace(pid=%lli,userdata="
384 "%31[x0123456789abcdefABCDEF])%n", &pid, userdata_s,
386 struct user_action_cookie cookie;
389 userdata = strtoull(userdata_s, NULL, 0);
390 memcpy(&cookie, &userdata, sizeof cookie);
391 odp_put_userspace_action(pid, &cookie, actions);
396 if (!strncmp(s, "set(", 4)) {
400 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET);
401 retval = parse_odp_key_attr(s + 4, port_names, actions);
405 if (s[retval + 4] != ')') {
408 nl_msg_end_nested(actions, start_ofs);
412 if (!strncmp(s, "push(", 5)) {
416 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_PUSH);
417 retval = parse_odp_key_attr(s + 5, port_names, actions);
421 if (s[retval + 5] != ')') {
424 nl_msg_end_nested(actions, start_ofs);
428 if (!strncmp(s, "pop(", 4)) {
429 enum ovs_key_attr key;
432 len = strcspn(s + 4, ")");
433 key = ovs_key_attr_from_string(s + 4, len);
434 if (key == OVS_KEY_ATTR_UNSPEC || s[4 + len] != ')') {
437 nl_msg_put_u16(actions, OVS_ACTION_ATTR_POP, key);
445 if (sscanf(s, "sample(sample=%lf%%,actions(%n", &percentage, &n) > 0
446 && percentage >= 0. && percentage <= 100.0
448 size_t sample_ofs, actions_ofs;
451 probability = floor(UINT32_MAX * (percentage / 100.0) + .5);
452 sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE);
453 nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY,
454 (probability <= 0 ? 0
455 : probability >= UINT32_MAX ? UINT32_MAX
458 actions_ofs = nl_msg_start_nested(actions,
459 OVS_SAMPLE_ATTR_ACTIONS);
463 s += strspn(s, delimiters);
468 retval = parse_odp_action(s + n, port_names, actions);
475 nl_msg_end_nested(actions, actions_ofs);
476 nl_msg_end_nested(actions, sample_ofs);
478 return s[n + 1] == ')' ? n + 2 : -EINVAL;
485 /* Parses the string representation of datapath actions, in the format output
486 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
487 * value. On success, the ODP actions are appended to 'actions' as a series of
488 * Netlink attributes. On failure, no data is appended to 'actions'. Either
489 * way, 'actions''s data might be reallocated. */
491 odp_actions_from_string(const char *s, const struct shash *port_names,
492 struct ofpbuf *actions)
496 if (!strcasecmp(s, "drop")) {
500 old_size = actions->size;
504 s += strspn(s, delimiters);
509 retval = parse_odp_action(s, port_names, actions);
510 if (retval < 0 || !strchr(delimiters, s[retval])) {
511 actions->size = old_size;
520 /* Returns the correct length of the payload for a flow key attribute of the
521 * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload
522 * is variable length. */
524 odp_flow_key_attr_len(uint16_t type)
526 if (type > OVS_KEY_ATTR_MAX) {
530 switch ((enum ovs_key_attr) type) {
531 case OVS_KEY_ATTR_ENCAP: return -2;
532 case OVS_KEY_ATTR_PRIORITY: return 4;
533 case OVS_KEY_ATTR_TUN_ID: return 8;
534 case OVS_KEY_ATTR_IN_PORT: return 4;
535 case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet);
536 case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16);
537 case OVS_KEY_ATTR_ETHERTYPE: return 2;
538 case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4);
539 case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6);
540 case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp);
541 case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp);
542 case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp);
543 case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6);
544 case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp);
545 case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd);
547 case OVS_KEY_ATTR_UNSPEC:
548 case __OVS_KEY_ATTR_MAX:
556 format_generic_odp_key(const struct nlattr *a, struct ds *ds)
558 size_t len = nl_attr_get_size(a);
560 const uint8_t *unspec;
563 unspec = nl_attr_get(a);
564 for (i = 0; i < len; i++) {
565 ds_put_char(ds, i ? ' ': '(');
566 ds_put_format(ds, "%02x", unspec[i]);
568 ds_put_char(ds, ')');
573 ovs_frag_type_to_string(enum ovs_frag_type type)
576 case OVS_FRAG_TYPE_NONE:
578 case OVS_FRAG_TYPE_FIRST:
580 case OVS_FRAG_TYPE_LATER:
582 case __OVS_FRAG_TYPE_MAX:
589 format_odp_key_attr(const struct nlattr *a, struct ds *ds)
591 const struct ovs_key_ethernet *eth_key;
592 const struct ovs_key_ipv4 *ipv4_key;
593 const struct ovs_key_ipv6 *ipv6_key;
594 const struct ovs_key_tcp *tcp_key;
595 const struct ovs_key_udp *udp_key;
596 const struct ovs_key_icmp *icmp_key;
597 const struct ovs_key_icmpv6 *icmpv6_key;
598 const struct ovs_key_arp *arp_key;
599 const struct ovs_key_nd *nd_key;
600 enum ovs_key_attr attr = nl_attr_type(a);
603 ds_put_cstr(ds, ovs_key_attr_to_string(attr));
604 expected_len = odp_flow_key_attr_len(nl_attr_type(a));
605 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
606 ds_put_format(ds, "(bad length %zu, expected %d)",
608 odp_flow_key_attr_len(nl_attr_type(a)));
609 format_generic_odp_key(a, ds);
614 case OVS_KEY_ATTR_ENCAP:
615 ds_put_cstr(ds, "(");
616 if (nl_attr_get_size(a)) {
617 odp_flow_key_format(nl_attr_get(a), nl_attr_get_size(a), ds);
619 ds_put_char(ds, ')');
622 case OVS_KEY_ATTR_PRIORITY:
623 ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a));
626 case OVS_KEY_ATTR_TUN_ID:
627 ds_put_format(ds, "(%#"PRIx64")", ntohll(nl_attr_get_be64(a)));
630 case OVS_KEY_ATTR_IN_PORT:
631 ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a));
634 case OVS_KEY_ATTR_ETHERNET:
635 eth_key = nl_attr_get(a);
636 ds_put_format(ds, "(src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT")",
637 ETH_ADDR_ARGS(eth_key->eth_src),
638 ETH_ADDR_ARGS(eth_key->eth_dst));
641 case OVS_KEY_ATTR_VLAN:
642 ds_put_char(ds, '(');
643 format_vlan_tci(ds, nl_attr_get_be16(a));
644 ds_put_char(ds, ')');
647 case OVS_KEY_ATTR_ETHERTYPE:
648 ds_put_format(ds, "(0x%04"PRIx16")",
649 ntohs(nl_attr_get_be16(a)));
652 case OVS_KEY_ATTR_IPV4:
653 ipv4_key = nl_attr_get(a);
654 ds_put_format(ds, "(src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
655 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s)",
656 IP_ARGS(&ipv4_key->ipv4_src),
657 IP_ARGS(&ipv4_key->ipv4_dst),
658 ipv4_key->ipv4_proto, ipv4_key->ipv4_tos,
660 ovs_frag_type_to_string(ipv4_key->ipv4_frag));
663 case OVS_KEY_ATTR_IPV6: {
664 char src_str[INET6_ADDRSTRLEN];
665 char dst_str[INET6_ADDRSTRLEN];
667 ipv6_key = nl_attr_get(a);
668 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
669 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
671 ds_put_format(ds, "(src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8
672 ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s)",
673 src_str, dst_str, ntohl(ipv6_key->ipv6_label),
674 ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass,
675 ipv6_key->ipv6_hlimit,
676 ovs_frag_type_to_string(ipv6_key->ipv6_frag));
680 case OVS_KEY_ATTR_TCP:
681 tcp_key = nl_attr_get(a);
682 ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
683 ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst));
686 case OVS_KEY_ATTR_UDP:
687 udp_key = nl_attr_get(a);
688 ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
689 ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst));
692 case OVS_KEY_ATTR_ICMP:
693 icmp_key = nl_attr_get(a);
694 ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")",
695 icmp_key->icmp_type, icmp_key->icmp_code);
698 case OVS_KEY_ATTR_ICMPV6:
699 icmpv6_key = nl_attr_get(a);
700 ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")",
701 icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code);
704 case OVS_KEY_ATTR_ARP:
705 arp_key = nl_attr_get(a);
706 ds_put_format(ds, "(sip="IP_FMT",tip="IP_FMT",op=%"PRIu16","
707 "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT")",
708 IP_ARGS(&arp_key->arp_sip), IP_ARGS(&arp_key->arp_tip),
709 ntohs(arp_key->arp_op), ETH_ADDR_ARGS(arp_key->arp_sha),
710 ETH_ADDR_ARGS(arp_key->arp_tha));
713 case OVS_KEY_ATTR_ND: {
714 char target[INET6_ADDRSTRLEN];
716 nd_key = nl_attr_get(a);
717 inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target);
719 ds_put_format(ds, "(target=%s", target);
720 if (!eth_addr_is_zero(nd_key->nd_sll)) {
721 ds_put_format(ds, ",sll="ETH_ADDR_FMT,
722 ETH_ADDR_ARGS(nd_key->nd_sll));
724 if (!eth_addr_is_zero(nd_key->nd_tll)) {
725 ds_put_format(ds, ",tll="ETH_ADDR_FMT,
726 ETH_ADDR_ARGS(nd_key->nd_tll));
728 ds_put_char(ds, ')');
732 case OVS_KEY_ATTR_UNSPEC:
733 case __OVS_KEY_ATTR_MAX:
735 format_generic_odp_key(a, ds);
740 /* Appends to 'ds' a string representation of the 'key_len' bytes of
741 * OVS_KEY_ATTR_* attributes in 'key'. */
743 odp_flow_key_format(const struct nlattr *key, size_t key_len, struct ds *ds)
746 const struct nlattr *a;
749 NL_ATTR_FOR_EACH (a, left, key, key_len) {
751 ds_put_char(ds, ',');
753 format_odp_key_attr(a, ds);
756 if (left == key_len) {
757 ds_put_cstr(ds, "<empty>");
759 ds_put_format(ds, ",***%u leftover bytes***", left);
762 ds_put_cstr(ds, "<empty>");
767 put_nd_key(int n, const char *nd_target_s,
768 const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *key)
770 struct ovs_key_nd nd_key;
772 memset(&nd_key, 0, sizeof nd_key);
773 if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
777 memcpy(nd_key.nd_sll, nd_sll, ETH_ADDR_LEN);
780 memcpy(nd_key.nd_tll, nd_tll, ETH_ADDR_LEN);
782 nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, &nd_key, sizeof nd_key);
787 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
789 if (!strcasecmp(s, "no")) {
790 *type = OVS_FRAG_TYPE_NONE;
791 } else if (!strcasecmp(s, "first")) {
792 *type = OVS_FRAG_TYPE_FIRST;
793 } else if (!strcasecmp(s, "later")) {
794 *type = OVS_FRAG_TYPE_LATER;
802 parse_odp_key_attr(const char *s, const struct shash *port_names,
805 /* Many of the sscanf calls in this function use oversized destination
806 * fields because some sscanf() implementations truncate the range of %i
807 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
808 * value of 0x7fff. The other alternatives are to allow only a single
809 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
812 * The tun_id parser has to use an alternative approach because there is no
813 * type larger than 64 bits. */
816 unsigned long long int priority;
819 if (sscanf(s, "priority(%lli)%n", &priority, &n) > 0 && n > 0) {
820 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
829 if (sscanf(s, "tun_id(%31[x0123456789abcdefABCDEF])%n",
830 tun_id_s, &n) > 0 && n > 0) {
831 uint64_t tun_id = strtoull(tun_id_s, NULL, 0);
832 nl_msg_put_be64(key, OVS_KEY_ATTR_TUN_ID, htonll(tun_id));
838 unsigned long long int in_port;
841 if (sscanf(s, "in_port(%lli)%n", &in_port, &n) > 0 && n > 0) {
842 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
847 if (port_names && !strncmp(s, "in_port(", 8)) {
849 const struct shash_node *node;
853 name_len = strcspn(s, ")");
854 node = shash_find_len(port_names, name, name_len);
856 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, (uintptr_t) node->data);
857 return 8 + name_len + 1;
862 struct ovs_key_ethernet eth_key;
866 "eth(src="ETH_ADDR_SCAN_FMT",dst="ETH_ADDR_SCAN_FMT")%n",
867 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
868 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n) > 0 && n > 0) {
869 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
870 ð_key, sizeof eth_key);
881 if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i)%n", &vid, &pcp, &n) > 0
883 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
884 htons((vid << VLAN_VID_SHIFT) |
885 (pcp << VLAN_PCP_SHIFT) |
888 } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i,cfi=%i)%n",
889 &vid, &pcp, &cfi, &n) > 0
891 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
892 htons((vid << VLAN_VID_SHIFT) |
893 (pcp << VLAN_PCP_SHIFT) |
894 (cfi ? VLAN_CFI : 0)));
903 if (sscanf(s, "eth_type(%i)%n", ð_type, &n) > 0 && n > 0) {
904 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
916 enum ovs_frag_type ipv4_frag;
919 if (sscanf(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
920 "proto=%i,tos=%i,ttl=%i,frag=%7[a-z])%n",
921 IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_dst),
922 &ipv4_proto, &ipv4_tos, &ipv4_ttl, frag, &n) > 0
924 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
925 struct ovs_key_ipv4 ipv4_key;
927 ipv4_key.ipv4_src = ipv4_src;
928 ipv4_key.ipv4_dst = ipv4_dst;
929 ipv4_key.ipv4_proto = ipv4_proto;
930 ipv4_key.ipv4_tos = ipv4_tos;
931 ipv4_key.ipv4_ttl = ipv4_ttl;
932 ipv4_key.ipv4_frag = ipv4_frag;
933 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
934 &ipv4_key, sizeof ipv4_key);
940 char ipv6_src_s[IPV6_SCAN_LEN + 1];
941 char ipv6_dst_s[IPV6_SCAN_LEN + 1];
947 enum ovs_frag_type ipv6_frag;
950 if (sscanf(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
951 "label=%i,proto=%i,tclass=%i,hlimit=%i,frag=%7[a-z])%n",
952 ipv6_src_s, ipv6_dst_s, &ipv6_label,
953 &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n) > 0
955 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
956 struct ovs_key_ipv6 ipv6_key;
958 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
959 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
962 ipv6_key.ipv6_label = htonl(ipv6_label);
963 ipv6_key.ipv6_proto = ipv6_proto;
964 ipv6_key.ipv6_tclass = ipv6_tclass;
965 ipv6_key.ipv6_hlimit = ipv6_hlimit;
966 ipv6_key.ipv6_frag = ipv6_frag;
967 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
968 &ipv6_key, sizeof ipv6_key);
978 if (sscanf(s, "tcp(src=%i,dst=%i)%n",&tcp_src, &tcp_dst, &n) > 0
980 struct ovs_key_tcp tcp_key;
982 tcp_key.tcp_src = htons(tcp_src);
983 tcp_key.tcp_dst = htons(tcp_dst);
984 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
994 if (sscanf(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n) > 0
996 struct ovs_key_udp udp_key;
998 udp_key.udp_src = htons(udp_src);
999 udp_key.udp_dst = htons(udp_dst);
1000 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
1010 if (sscanf(s, "icmp(type=%i,code=%i)%n",
1011 &icmp_type, &icmp_code, &n) > 0
1013 struct ovs_key_icmp icmp_key;
1015 icmp_key.icmp_type = icmp_type;
1016 icmp_key.icmp_code = icmp_code;
1017 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
1018 &icmp_key, sizeof icmp_key);
1024 struct ovs_key_icmpv6 icmpv6_key;
1027 if (sscanf(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
1028 &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,&n) > 0
1030 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
1031 &icmpv6_key, sizeof icmpv6_key);
1040 uint8_t arp_sha[ETH_ADDR_LEN];
1041 uint8_t arp_tha[ETH_ADDR_LEN];
1044 if (sscanf(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
1045 "op=%i,sha="ETH_ADDR_SCAN_FMT",tha="ETH_ADDR_SCAN_FMT")%n",
1046 IP_SCAN_ARGS(&arp_sip),
1047 IP_SCAN_ARGS(&arp_tip),
1049 ETH_ADDR_SCAN_ARGS(arp_sha),
1050 ETH_ADDR_SCAN_ARGS(arp_tha), &n) > 0 && n > 0) {
1051 struct ovs_key_arp arp_key;
1053 memset(&arp_key, 0, sizeof arp_key);
1054 arp_key.arp_sip = arp_sip;
1055 arp_key.arp_tip = arp_tip;
1056 arp_key.arp_op = htons(arp_op);
1057 memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
1058 memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
1059 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
1065 char nd_target_s[IPV6_SCAN_LEN + 1];
1066 uint8_t nd_sll[ETH_ADDR_LEN];
1067 uint8_t nd_tll[ETH_ADDR_LEN];
1070 if (sscanf(s, "nd(target="IPV6_SCAN_FMT")%n",
1071 nd_target_s, &n) > 0 && n > 0) {
1072 return put_nd_key(n, nd_target_s, NULL, NULL, key);
1074 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT")%n",
1075 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n) > 0
1077 return put_nd_key(n, nd_target_s, nd_sll, NULL, key);
1079 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",tll="ETH_ADDR_SCAN_FMT")%n",
1080 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
1082 return put_nd_key(n, nd_target_s, NULL, nd_tll, key);
1084 if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT","
1085 "tll="ETH_ADDR_SCAN_FMT")%n",
1086 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
1087 ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
1089 return put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
1093 if (!strncmp(s, "encap(", 6)) {
1094 const char *start = s;
1097 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
1103 s += strspn(s, ", \t\r\n");
1106 } else if (*s == ')') {
1110 retval = parse_odp_key_attr(s, key);
1118 nl_msg_end_nested(key, encap);
1126 /* Parses the string representation of a datapath flow key, in the
1127 * format output by odp_flow_key_format(). Returns 0 if successful,
1128 * otherwise a positive errno value. On success, the flow key is
1129 * appended to 'key' as a series of Netlink attributes. On failure, no
1130 * data is appended to 'key'. Either way, 'key''s data might be
1133 * If 'port_names' is nonnull, it points to an shash that maps from a port name
1134 * to a port number cast to void *. (Port names may be used instead of port
1135 * numbers in in_port.)
1137 * On success, the attributes appended to 'key' are individually syntactically
1138 * valid, but they may not be valid as a sequence. 'key' might, for example,
1139 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
1141 odp_flow_key_from_string(const char *s, const struct shash *port_names,
1144 const size_t old_size = key->size;
1148 s += strspn(s, delimiters);
1153 retval = parse_odp_key_attr(s, port_names, key);
1155 key->size = old_size;
1165 ovs_to_odp_frag(uint8_t ovs_frag)
1167 return (ovs_frag & FLOW_NW_FRAG_LATER ? OVS_FRAG_TYPE_LATER
1168 : ovs_frag & FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST
1169 : OVS_FRAG_TYPE_NONE);
1172 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'. */
1174 odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow)
1176 struct ovs_key_ethernet *eth_key;
1179 if (flow->priority) {
1180 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, flow->priority);
1183 if (flow->tun_id != htonll(0)) {
1184 nl_msg_put_be64(buf, OVS_KEY_ATTR_TUN_ID, flow->tun_id);
1187 if (flow->in_port != OFPP_NONE) {
1188 nl_msg_put_u32(buf, OVS_KEY_ATTR_IN_PORT,
1189 ofp_port_to_odp_port(flow->in_port));
1192 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
1194 memcpy(eth_key->eth_src, flow->dl_src, ETH_ADDR_LEN);
1195 memcpy(eth_key->eth_dst, flow->dl_dst, ETH_ADDR_LEN);
1197 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
1198 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
1199 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, flow->vlan_tci);
1200 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
1201 if (flow->vlan_tci == htons(0)) {
1208 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
1212 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, flow->dl_type);
1214 if (flow->dl_type == htons(ETH_TYPE_IP)) {
1215 struct ovs_key_ipv4 *ipv4_key;
1217 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
1219 ipv4_key->ipv4_src = flow->nw_src;
1220 ipv4_key->ipv4_dst = flow->nw_dst;
1221 ipv4_key->ipv4_proto = flow->nw_proto;
1222 ipv4_key->ipv4_tos = flow->nw_tos;
1223 ipv4_key->ipv4_ttl = flow->nw_ttl;
1224 ipv4_key->ipv4_frag = ovs_to_odp_frag(flow->nw_frag);
1225 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
1226 struct ovs_key_ipv6 *ipv6_key;
1228 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
1230 memcpy(ipv6_key->ipv6_src, &flow->ipv6_src, sizeof ipv6_key->ipv6_src);
1231 memcpy(ipv6_key->ipv6_dst, &flow->ipv6_dst, sizeof ipv6_key->ipv6_dst);
1232 ipv6_key->ipv6_label = flow->ipv6_label;
1233 ipv6_key->ipv6_proto = flow->nw_proto;
1234 ipv6_key->ipv6_tclass = flow->nw_tos;
1235 ipv6_key->ipv6_hlimit = flow->nw_ttl;
1236 ipv6_key->ipv6_frag = ovs_to_odp_frag(flow->nw_frag);
1237 } else if (flow->dl_type == htons(ETH_TYPE_ARP)) {
1238 struct ovs_key_arp *arp_key;
1240 arp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ARP,
1242 memset(arp_key, 0, sizeof *arp_key);
1243 arp_key->arp_sip = flow->nw_src;
1244 arp_key->arp_tip = flow->nw_dst;
1245 arp_key->arp_op = htons(flow->nw_proto);
1246 memcpy(arp_key->arp_sha, flow->arp_sha, ETH_ADDR_LEN);
1247 memcpy(arp_key->arp_tha, flow->arp_tha, ETH_ADDR_LEN);
1250 if ((flow->dl_type == htons(ETH_TYPE_IP)
1251 || flow->dl_type == htons(ETH_TYPE_IPV6))
1252 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1254 if (flow->nw_proto == IPPROTO_TCP) {
1255 struct ovs_key_tcp *tcp_key;
1257 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
1259 tcp_key->tcp_src = flow->tp_src;
1260 tcp_key->tcp_dst = flow->tp_dst;
1261 } else if (flow->nw_proto == IPPROTO_UDP) {
1262 struct ovs_key_udp *udp_key;
1264 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
1266 udp_key->udp_src = flow->tp_src;
1267 udp_key->udp_dst = flow->tp_dst;
1268 } else if (flow->dl_type == htons(ETH_TYPE_IP)
1269 && flow->nw_proto == IPPROTO_ICMP) {
1270 struct ovs_key_icmp *icmp_key;
1272 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
1274 icmp_key->icmp_type = ntohs(flow->tp_src);
1275 icmp_key->icmp_code = ntohs(flow->tp_dst);
1276 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
1277 && flow->nw_proto == IPPROTO_ICMPV6) {
1278 struct ovs_key_icmpv6 *icmpv6_key;
1280 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
1281 sizeof *icmpv6_key);
1282 icmpv6_key->icmpv6_type = ntohs(flow->tp_src);
1283 icmpv6_key->icmpv6_code = ntohs(flow->tp_dst);
1285 if (icmpv6_key->icmpv6_type == ND_NEIGHBOR_SOLICIT
1286 || icmpv6_key->icmpv6_type == ND_NEIGHBOR_ADVERT) {
1287 struct ovs_key_nd *nd_key;
1289 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
1291 memcpy(nd_key->nd_target, &flow->nd_target,
1292 sizeof nd_key->nd_target);
1293 memcpy(nd_key->nd_sll, flow->arp_sha, ETH_ADDR_LEN);
1294 memcpy(nd_key->nd_tll, flow->arp_tha, ETH_ADDR_LEN);
1301 nl_msg_end_nested(buf, encap);
1306 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
1308 const struct nlattr *key, size_t key_len)
1313 if (VLOG_DROP_WARN(rl)) {
1318 ds_put_format(&s, "%s:", title);
1319 for (i = 0; i < 32; i++) {
1320 if (attrs & (1u << i)) {
1321 ds_put_format(&s, " %s", ovs_key_attr_to_string(i));
1325 ds_put_cstr(&s, ": ");
1326 odp_flow_key_format(key, key_len, &s);
1328 VLOG_WARN("%s", ds_cstr(&s));
1333 odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow)
1335 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1337 if (odp_frag > OVS_FRAG_TYPE_LATER) {
1338 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key",
1343 if (odp_frag != OVS_FRAG_TYPE_NONE) {
1344 flow->nw_frag |= FLOW_NW_FRAG_ANY;
1345 if (odp_frag == OVS_FRAG_TYPE_LATER) {
1346 flow->nw_frag |= FLOW_NW_FRAG_LATER;
1353 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
1354 const struct nlattr *attrs[], uint64_t *present_attrsp)
1356 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1357 const struct nlattr *nla;
1358 uint64_t present_attrs;
1362 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
1363 uint16_t type = nl_attr_type(nla);
1364 size_t len = nl_attr_get_size(nla);
1365 int expected_len = odp_flow_key_attr_len(type);
1367 if (len != expected_len && expected_len != -2) {
1368 if (expected_len == -1) {
1369 VLOG_ERR_RL(&rl, "unknown attribute %"PRIu16" in flow key",
1372 VLOG_ERR_RL(&rl, "attribute %s has length %zu but should have "
1373 "length %d", ovs_key_attr_to_string(type),
1377 } else if (present_attrs & (UINT64_C(1) << type)) {
1378 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
1379 ovs_key_attr_to_string(type));
1383 present_attrs |= UINT64_C(1) << type;
1387 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
1391 *present_attrsp = present_attrs;
1396 check_expectations(uint64_t present_attrs, uint64_t expected_attrs,
1397 const struct nlattr *key, size_t key_len)
1399 uint64_t missing_attrs;
1400 uint64_t extra_attrs;
1402 missing_attrs = expected_attrs & ~present_attrs;
1403 if (missing_attrs) {
1404 static struct vlog_rate_limit miss_rl = VLOG_RATE_LIMIT_INIT(10, 10);
1405 log_odp_key_attributes(&miss_rl, "expected but not present",
1406 missing_attrs, key, key_len);
1410 extra_attrs = present_attrs & ~expected_attrs;
1412 static struct vlog_rate_limit extra_rl = VLOG_RATE_LIMIT_INIT(10, 10);
1413 log_odp_key_attributes(&extra_rl, "present but not expected",
1414 extra_attrs, key, key_len);
1421 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
1422 * structure in 'flow'. Returns 0 if successful, otherwise EINVAL. */
1424 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
1427 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1428 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
1429 uint64_t expected_attrs;
1430 uint64_t present_attrs;
1433 memset(flow, 0, sizeof *flow);
1435 error = parse_flow_nlattrs(key, key_len, attrs, &present_attrs);
1442 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
1443 flow->priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
1444 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
1447 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUN_ID)) {
1448 flow->tun_id = nl_attr_get_be64(attrs[OVS_KEY_ATTR_TUN_ID]);
1449 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUN_ID;
1452 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
1453 uint32_t in_port = nl_attr_get_u32(attrs[OVS_KEY_ATTR_IN_PORT]);
1454 if (in_port >= UINT16_MAX || in_port >= OFPP_MAX) {
1455 VLOG_ERR_RL(&rl, "in_port %"PRIu32" out of supported range",
1459 flow->in_port = odp_port_to_ofp_port(in_port);
1460 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
1462 flow->in_port = OFPP_NONE;
1465 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
1466 const struct ovs_key_ethernet *eth_key;
1468 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
1469 memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN);
1470 memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN);
1472 VLOG_ERR_RL(&rl, "missing Ethernet attribute in flow key");
1475 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
1477 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)
1478 && (nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE])
1479 == htons(ETH_TYPE_VLAN))) {
1480 /* The Ethernet type is 0x8100 so there must be a VLAN tag
1481 * and encapsulated protocol information. */
1482 const struct nlattr *encap;
1486 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE) |
1487 (UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
1488 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
1489 error = check_expectations(present_attrs, expected_attrs,
1495 encap = attrs[OVS_KEY_ATTR_ENCAP];
1496 tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
1497 if (tci & htons(VLAN_CFI)) {
1498 flow->vlan_tci = tci;
1500 error = parse_flow_nlattrs(nl_attr_get(encap),
1501 nl_attr_get_size(encap),
1502 attrs, &present_attrs);
1507 } else if (tci == htons(0)) {
1508 /* Corner case for a truncated 802.1Q header. */
1509 if (nl_attr_get_size(encap)) {
1513 flow->dl_type = htons(ETH_TYPE_VLAN);
1520 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
1521 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
1522 if (ntohs(flow->dl_type) < 1536) {
1523 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
1524 ntohs(flow->dl_type));
1527 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
1529 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
1532 if (flow->dl_type == htons(ETH_TYPE_IP)) {
1533 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
1534 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
1535 const struct ovs_key_ipv4 *ipv4_key;
1537 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
1538 flow->nw_src = ipv4_key->ipv4_src;
1539 flow->nw_dst = ipv4_key->ipv4_dst;
1540 flow->nw_proto = ipv4_key->ipv4_proto;
1541 flow->nw_tos = ipv4_key->ipv4_tos;
1542 flow->nw_ttl = ipv4_key->ipv4_ttl;
1543 if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) {
1547 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
1548 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
1549 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
1550 const struct ovs_key_ipv6 *ipv6_key;
1552 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
1553 memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src);
1554 memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst);
1555 flow->ipv6_label = ipv6_key->ipv6_label;
1556 flow->nw_proto = ipv6_key->ipv6_proto;
1557 flow->nw_tos = ipv6_key->ipv6_tclass;
1558 flow->nw_ttl = ipv6_key->ipv6_hlimit;
1559 if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) {
1563 } else if (flow->dl_type == htons(ETH_TYPE_ARP)) {
1564 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
1565 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
1566 const struct ovs_key_arp *arp_key;
1568 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
1569 flow->nw_src = arp_key->arp_sip;
1570 flow->nw_dst = arp_key->arp_tip;
1571 if (arp_key->arp_op & htons(0xff00)) {
1572 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
1573 "key", ntohs(arp_key->arp_op));
1576 flow->nw_proto = ntohs(arp_key->arp_op);
1577 memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN);
1578 memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN);
1582 if (flow->nw_proto == IPPROTO_TCP
1583 && (flow->dl_type == htons(ETH_TYPE_IP) ||
1584 flow->dl_type == htons(ETH_TYPE_IPV6))
1585 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1586 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
1587 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
1588 const struct ovs_key_tcp *tcp_key;
1590 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
1591 flow->tp_src = tcp_key->tcp_src;
1592 flow->tp_dst = tcp_key->tcp_dst;
1594 } else if (flow->nw_proto == IPPROTO_UDP
1595 && (flow->dl_type == htons(ETH_TYPE_IP) ||
1596 flow->dl_type == htons(ETH_TYPE_IPV6))
1597 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1598 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
1599 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
1600 const struct ovs_key_udp *udp_key;
1602 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
1603 flow->tp_src = udp_key->udp_src;
1604 flow->tp_dst = udp_key->udp_dst;
1606 } else if (flow->nw_proto == IPPROTO_ICMP
1607 && flow->dl_type == htons(ETH_TYPE_IP)
1608 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1609 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
1610 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
1611 const struct ovs_key_icmp *icmp_key;
1613 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
1614 flow->tp_src = htons(icmp_key->icmp_type);
1615 flow->tp_dst = htons(icmp_key->icmp_code);
1617 } else if (flow->nw_proto == IPPROTO_ICMPV6
1618 && flow->dl_type == htons(ETH_TYPE_IPV6)
1619 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
1620 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
1621 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
1622 const struct ovs_key_icmpv6 *icmpv6_key;
1624 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
1625 flow->tp_src = htons(icmpv6_key->icmpv6_type);
1626 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
1628 if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
1629 flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) {
1630 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
1631 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
1632 const struct ovs_key_nd *nd_key;
1634 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
1635 memcpy(&flow->nd_target, nd_key->nd_target,
1636 sizeof flow->nd_target);
1637 memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN);
1638 memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN);
1644 return check_expectations(present_attrs, expected_attrs, key, key_len);
1647 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
1648 * Netlink PID 'pid'. If 'cookie' is nonnull, adds a userdata attribute whose
1649 * contents contains 'cookie' and returns the offset within 'odp_actions' of
1650 * the start of the cookie. (If 'cookie' is null, then the return value is not
1653 odp_put_userspace_action(uint32_t pid, const struct user_action_cookie *cookie,
1654 struct ofpbuf *odp_actions)
1658 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
1659 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
1661 nl_msg_put_unspec(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
1662 cookie, sizeof *cookie);
1664 nl_msg_end_nested(odp_actions, offset);
1666 return cookie ? odp_actions->size - NLA_ALIGN(sizeof *cookie) : 0;