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.
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
);
120 format_generic_odp_action(struct ds
*ds
, const struct nlattr
*a
)
122 size_t len
= nl_attr_get_size(a
);
124 ds_put_format(ds
, "action%"PRId16
, nl_attr_type(a
));
126 const uint8_t *unspec
;
129 unspec
= nl_attr_get(a
);
130 for (i
= 0; i
< len
; i
++) {
131 ds_put_char(ds
, i
? ' ': '(');
132 ds_put_format(ds
, "%02x", unspec
[i
]);
134 ds_put_char(ds
, ')');
139 format_odp_sample_action(struct ds
*ds
, const struct nlattr
*attr
)
141 static const struct nl_policy ovs_sample_policy
[] = {
142 [OVS_SAMPLE_ATTR_PROBABILITY
] = { .type
= NL_A_U32
},
143 [OVS_SAMPLE_ATTR_ACTIONS
] = { .type
= NL_A_NESTED
}
145 struct nlattr
*a
[ARRAY_SIZE(ovs_sample_policy
)];
147 const struct nlattr
*nla_acts
;
150 ds_put_cstr(ds
, "sample");
152 if (!nl_parse_nested(attr
, ovs_sample_policy
, a
, ARRAY_SIZE(a
))) {
153 ds_put_cstr(ds
, "(error)");
157 percentage
= (100.0 * nl_attr_get_u32(a
[OVS_SAMPLE_ATTR_PROBABILITY
])) /
160 ds_put_format(ds
, "(sample=%.1f%%,", percentage
);
162 ds_put_cstr(ds
, "actions(");
163 nla_acts
= nl_attr_get(a
[OVS_SAMPLE_ATTR_ACTIONS
]);
164 len
= nl_attr_get_size(a
[OVS_SAMPLE_ATTR_ACTIONS
]);
165 format_odp_actions(ds
, nla_acts
, len
);
166 ds_put_format(ds
, "))");
170 format_odp_userspace_action(struct ds
*ds
, const struct nlattr
*attr
)
172 static const struct nl_policy ovs_userspace_policy
[] = {
173 [OVS_USERSPACE_ATTR_PID
] = { .type
= NL_A_U32
},
174 [OVS_USERSPACE_ATTR_USERDATA
] = { .type
= NL_A_U64
, .optional
= true },
176 struct nlattr
*a
[ARRAY_SIZE(ovs_userspace_policy
)];
178 if (!nl_parse_nested(attr
, ovs_userspace_policy
, a
, ARRAY_SIZE(a
))) {
179 ds_put_cstr(ds
, "userspace(error)");
183 ds_put_format(ds
, "userspace(pid=%"PRIu32
,
184 nl_attr_get_u32(a
[OVS_USERSPACE_ATTR_PID
]));
186 if (a
[OVS_USERSPACE_ATTR_USERDATA
]) {
187 uint64_t userdata
= nl_attr_get_u64(a
[OVS_USERSPACE_ATTR_USERDATA
]);
188 struct user_action_cookie cookie
;
190 memcpy(&cookie
, &userdata
, sizeof cookie
);
192 if (cookie
.type
== USER_ACTION_COOKIE_SFLOW
) {
193 ds_put_format(ds
, ",sFlow,n_output=%"PRIu8
","
194 "vid=%"PRIu16
",pcp=%"PRIu8
",ifindex=%"PRIu32
,
195 cookie
.n_output
, vlan_tci_to_vid(cookie
.vlan_tci
),
196 vlan_tci_to_pcp(cookie
.vlan_tci
), cookie
.data
);
198 ds_put_format(ds
, ",userdata=0x%"PRIx64
, userdata
);
202 ds_put_char(ds
, ')');
206 format_vlan_tci(struct ds
*ds
, ovs_be16 vlan_tci
)
208 ds_put_format(ds
, "vid=%"PRIu16
",pcp=%d",
209 vlan_tci_to_vid(vlan_tci
),
210 vlan_tci_to_pcp(vlan_tci
));
211 if (!(vlan_tci
& htons(VLAN_CFI
))) {
212 ds_put_cstr(ds
, ",cfi=0");
217 format_odp_action(struct ds
*ds
, const struct nlattr
*a
)
220 enum ovs_action_attr type
= nl_attr_type(a
);
221 const struct ovs_action_push_vlan
*vlan
;
223 expected_len
= odp_action_len(nl_attr_type(a
));
224 if (expected_len
!= -2 && nl_attr_get_size(a
) != expected_len
) {
225 ds_put_format(ds
, "bad length %zu, expected %d for: ",
226 nl_attr_get_size(a
), expected_len
);
227 format_generic_odp_action(ds
, a
);
232 case OVS_ACTION_ATTR_OUTPUT
:
233 ds_put_format(ds
, "%"PRIu16
, nl_attr_get_u32(a
));
235 case OVS_ACTION_ATTR_USERSPACE
:
236 format_odp_userspace_action(ds
, a
);
238 case OVS_ACTION_ATTR_SET
:
239 ds_put_cstr(ds
, "set(");
240 format_odp_key_attr(nl_attr_get(a
), ds
);
241 ds_put_cstr(ds
, ")");
243 case OVS_ACTION_ATTR_PUSH_VLAN
:
244 vlan
= nl_attr_get(a
);
245 ds_put_cstr(ds
, "push_vlan(");
246 if (vlan
->vlan_tpid
!= htons(ETH_TYPE_VLAN
)) {
247 ds_put_format(ds
, "tpid=0x%04"PRIx16
",", ntohs(vlan
->vlan_tpid
));
249 format_vlan_tci(ds
, vlan
->vlan_tci
);
250 ds_put_char(ds
, ')');
252 case OVS_ACTION_ATTR_POP_VLAN
:
253 ds_put_cstr(ds
, "pop_vlan");
255 case OVS_ACTION_ATTR_SAMPLE
:
256 format_odp_sample_action(ds
, a
);
258 case OVS_ACTION_ATTR_UNSPEC
:
259 case __OVS_ACTION_ATTR_MAX
:
261 format_generic_odp_action(ds
, a
);
267 format_odp_actions(struct ds
*ds
, const struct nlattr
*actions
,
271 const struct nlattr
*a
;
274 NL_ATTR_FOR_EACH (a
, left
, actions
, actions_len
) {
276 ds_put_char(ds
, ',');
278 format_odp_action(ds
, a
);
283 if (left
== actions_len
) {
284 ds_put_cstr(ds
, "<empty>");
286 ds_put_format(ds
, ",***%u leftover bytes*** (", left
);
287 for (i
= 0; i
< left
; i
++) {
288 ds_put_format(ds
, "%02x", ((const uint8_t *) a
)[i
]);
290 ds_put_char(ds
, ')');
293 ds_put_cstr(ds
, "drop");
298 parse_odp_action(const char *s
, const struct shash
*port_names
,
299 struct ofpbuf
*actions
)
301 /* Many of the sscanf calls in this function use oversized destination
302 * fields because some sscanf() implementations truncate the range of %i
303 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
304 * value of 0x7fff. The other alternatives are to allow only a single
305 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
308 * The tun_id parser has to use an alternative approach because there is no
309 * type larger than 64 bits. */
312 unsigned long long int port
;
315 if (sscanf(s
, "%lli%n", &port
, &n
) > 0 && n
> 0) {
316 nl_msg_put_u32(actions
, OVS_ACTION_ATTR_OUTPUT
, port
);
322 int len
= strcspn(s
, delimiters
);
323 struct shash_node
*node
;
325 node
= shash_find_len(port_names
, s
, len
);
327 nl_msg_put_u32(actions
, OVS_ACTION_ATTR_OUTPUT
,
328 (uintptr_t) node
->data
);
334 unsigned long long int pid
;
335 unsigned long long int ifindex
;
341 if (sscanf(s
, "userspace(pid=%lli)%n", &pid
, &n
) > 0 && n
> 0) {
342 odp_put_userspace_action(pid
, NULL
, actions
);
344 } else if (sscanf(s
, "userspace(pid=%lli,sFlow,n_output=%i,vid=%i,"
345 "pcp=%i,ifindex=%lli)%n", &pid
, &n_output
,
346 &vid
, &pcp
, &ifindex
, &n
) > 0 && n
> 0) {
347 struct user_action_cookie cookie
;
350 tci
= vid
| (pcp
<< VLAN_PCP_SHIFT
);
355 cookie
.type
= USER_ACTION_COOKIE_SFLOW
;
356 cookie
.n_output
= n_output
;
357 cookie
.vlan_tci
= htons(tci
);
358 cookie
.data
= ifindex
;
359 odp_put_userspace_action(pid
, &cookie
, actions
);
361 } else if (sscanf(s
, "userspace(pid=%lli,userdata="
362 "%31[x0123456789abcdefABCDEF])%n", &pid
, userdata_s
,
364 struct user_action_cookie cookie
;
367 userdata
= strtoull(userdata_s
, NULL
, 0);
368 memcpy(&cookie
, &userdata
, sizeof cookie
);
369 odp_put_userspace_action(pid
, &cookie
, actions
);
374 if (!strncmp(s
, "set(", 4)) {
378 start_ofs
= nl_msg_start_nested(actions
, OVS_ACTION_ATTR_SET
);
379 retval
= parse_odp_key_attr(s
+ 4, port_names
, actions
);
383 if (s
[retval
+ 4] != ')') {
386 nl_msg_end_nested(actions
, start_ofs
);
391 struct ovs_action_push_vlan push
;
392 int tpid
= ETH_TYPE_VLAN
;
397 if ((sscanf(s
, "push_vlan(vid=%i,pcp=%i)%n", &vid
, &pcp
, &n
) > 0
399 || (sscanf(s
, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n",
400 &vid
, &pcp
, &cfi
, &n
) > 0 && n
> 0)
401 || (sscanf(s
, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n",
402 &tpid
, &vid
, &pcp
, &n
) > 0 && n
> 0)
403 || (sscanf(s
, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n",
404 &tpid
, &vid
, &pcp
, &cfi
, &n
) > 0 && n
> 0)) {
405 push
.vlan_tpid
= htons(tpid
);
406 push
.vlan_tci
= htons((vid
<< VLAN_VID_SHIFT
)
407 | (pcp
<< VLAN_PCP_SHIFT
)
408 | (cfi
? VLAN_CFI
: 0));
409 nl_msg_put_unspec(actions
, OVS_ACTION_ATTR_PUSH_VLAN
,
416 if (!strncmp(s
, "pop_vlan", 8)) {
417 nl_msg_put_flag(actions
, OVS_ACTION_ATTR_POP_VLAN
);
425 if (sscanf(s
, "sample(sample=%lf%%,actions(%n", &percentage
, &n
) > 0
426 && percentage
>= 0. && percentage
<= 100.0
428 size_t sample_ofs
, actions_ofs
;
431 probability
= floor(UINT32_MAX
* (percentage
/ 100.0) + .5);
432 sample_ofs
= nl_msg_start_nested(actions
, OVS_ACTION_ATTR_SAMPLE
);
433 nl_msg_put_u32(actions
, OVS_SAMPLE_ATTR_PROBABILITY
,
434 (probability
<= 0 ? 0
435 : probability
>= UINT32_MAX
? UINT32_MAX
438 actions_ofs
= nl_msg_start_nested(actions
,
439 OVS_SAMPLE_ATTR_ACTIONS
);
443 s
+= strspn(s
, delimiters
);
448 retval
= parse_odp_action(s
+ n
, port_names
, actions
);
455 nl_msg_end_nested(actions
, actions_ofs
);
456 nl_msg_end_nested(actions
, sample_ofs
);
458 return s
[n
+ 1] == ')' ? n
+ 2 : -EINVAL
;
465 /* Parses the string representation of datapath actions, in the format output
466 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
467 * value. On success, the ODP actions are appended to 'actions' as a series of
468 * Netlink attributes. On failure, no data is appended to 'actions'. Either
469 * way, 'actions''s data might be reallocated. */
471 odp_actions_from_string(const char *s
, const struct shash
*port_names
,
472 struct ofpbuf
*actions
)
476 if (!strcasecmp(s
, "drop")) {
480 old_size
= actions
->size
;
484 s
+= strspn(s
, delimiters
);
489 retval
= parse_odp_action(s
, port_names
, actions
);
490 if (retval
< 0 || !strchr(delimiters
, s
[retval
])) {
491 actions
->size
= old_size
;
500 /* Returns the correct length of the payload for a flow key attribute of the
501 * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload
502 * is variable length. */
504 odp_flow_key_attr_len(uint16_t type
)
506 if (type
> OVS_KEY_ATTR_MAX
) {
510 switch ((enum ovs_key_attr
) type
) {
511 case OVS_KEY_ATTR_ENCAP
: return -2;
512 case OVS_KEY_ATTR_PRIORITY
: return 4;
513 case OVS_KEY_ATTR_TUN_ID
: return 8;
514 case OVS_KEY_ATTR_IN_PORT
: return 4;
515 case OVS_KEY_ATTR_ETHERNET
: return sizeof(struct ovs_key_ethernet
);
516 case OVS_KEY_ATTR_VLAN
: return sizeof(ovs_be16
);
517 case OVS_KEY_ATTR_ETHERTYPE
: return 2;
518 case OVS_KEY_ATTR_IPV4
: return sizeof(struct ovs_key_ipv4
);
519 case OVS_KEY_ATTR_IPV6
: return sizeof(struct ovs_key_ipv6
);
520 case OVS_KEY_ATTR_TCP
: return sizeof(struct ovs_key_tcp
);
521 case OVS_KEY_ATTR_UDP
: return sizeof(struct ovs_key_udp
);
522 case OVS_KEY_ATTR_ICMP
: return sizeof(struct ovs_key_icmp
);
523 case OVS_KEY_ATTR_ICMPV6
: return sizeof(struct ovs_key_icmpv6
);
524 case OVS_KEY_ATTR_ARP
: return sizeof(struct ovs_key_arp
);
525 case OVS_KEY_ATTR_ND
: return sizeof(struct ovs_key_nd
);
527 case OVS_KEY_ATTR_UNSPEC
:
528 case __OVS_KEY_ATTR_MAX
:
536 format_generic_odp_key(const struct nlattr
*a
, struct ds
*ds
)
538 size_t len
= nl_attr_get_size(a
);
540 const uint8_t *unspec
;
543 unspec
= nl_attr_get(a
);
544 for (i
= 0; i
< len
; i
++) {
545 ds_put_char(ds
, i
? ' ': '(');
546 ds_put_format(ds
, "%02x", unspec
[i
]);
548 ds_put_char(ds
, ')');
553 ovs_frag_type_to_string(enum ovs_frag_type type
)
556 case OVS_FRAG_TYPE_NONE
:
558 case OVS_FRAG_TYPE_FIRST
:
560 case OVS_FRAG_TYPE_LATER
:
562 case __OVS_FRAG_TYPE_MAX
:
569 format_odp_key_attr(const struct nlattr
*a
, struct ds
*ds
)
571 const struct ovs_key_ethernet
*eth_key
;
572 const struct ovs_key_ipv4
*ipv4_key
;
573 const struct ovs_key_ipv6
*ipv6_key
;
574 const struct ovs_key_tcp
*tcp_key
;
575 const struct ovs_key_udp
*udp_key
;
576 const struct ovs_key_icmp
*icmp_key
;
577 const struct ovs_key_icmpv6
*icmpv6_key
;
578 const struct ovs_key_arp
*arp_key
;
579 const struct ovs_key_nd
*nd_key
;
580 enum ovs_key_attr attr
= nl_attr_type(a
);
583 ds_put_cstr(ds
, ovs_key_attr_to_string(attr
));
584 expected_len
= odp_flow_key_attr_len(nl_attr_type(a
));
585 if (expected_len
!= -2 && nl_attr_get_size(a
) != expected_len
) {
586 ds_put_format(ds
, "(bad length %zu, expected %d)",
588 odp_flow_key_attr_len(nl_attr_type(a
)));
589 format_generic_odp_key(a
, ds
);
594 case OVS_KEY_ATTR_ENCAP
:
595 ds_put_cstr(ds
, "(");
596 if (nl_attr_get_size(a
)) {
597 odp_flow_key_format(nl_attr_get(a
), nl_attr_get_size(a
), ds
);
599 ds_put_char(ds
, ')');
602 case OVS_KEY_ATTR_PRIORITY
:
603 ds_put_format(ds
, "(%"PRIu32
")", nl_attr_get_u32(a
));
606 case OVS_KEY_ATTR_TUN_ID
:
607 ds_put_format(ds
, "(%#"PRIx64
")", ntohll(nl_attr_get_be64(a
)));
610 case OVS_KEY_ATTR_IN_PORT
:
611 ds_put_format(ds
, "(%"PRIu32
")", nl_attr_get_u32(a
));
614 case OVS_KEY_ATTR_ETHERNET
:
615 eth_key
= nl_attr_get(a
);
616 ds_put_format(ds
, "(src="ETH_ADDR_FMT
",dst="ETH_ADDR_FMT
")",
617 ETH_ADDR_ARGS(eth_key
->eth_src
),
618 ETH_ADDR_ARGS(eth_key
->eth_dst
));
621 case OVS_KEY_ATTR_VLAN
:
622 ds_put_char(ds
, '(');
623 format_vlan_tci(ds
, nl_attr_get_be16(a
));
624 ds_put_char(ds
, ')');
627 case OVS_KEY_ATTR_ETHERTYPE
:
628 ds_put_format(ds
, "(0x%04"PRIx16
")",
629 ntohs(nl_attr_get_be16(a
)));
632 case OVS_KEY_ATTR_IPV4
:
633 ipv4_key
= nl_attr_get(a
);
634 ds_put_format(ds
, "(src="IP_FMT
",dst="IP_FMT
",proto=%"PRIu8
635 ",tos=%#"PRIx8
",ttl=%"PRIu8
",frag=%s)",
636 IP_ARGS(&ipv4_key
->ipv4_src
),
637 IP_ARGS(&ipv4_key
->ipv4_dst
),
638 ipv4_key
->ipv4_proto
, ipv4_key
->ipv4_tos
,
640 ovs_frag_type_to_string(ipv4_key
->ipv4_frag
));
643 case OVS_KEY_ATTR_IPV6
: {
644 char src_str
[INET6_ADDRSTRLEN
];
645 char dst_str
[INET6_ADDRSTRLEN
];
647 ipv6_key
= nl_attr_get(a
);
648 inet_ntop(AF_INET6
, ipv6_key
->ipv6_src
, src_str
, sizeof src_str
);
649 inet_ntop(AF_INET6
, ipv6_key
->ipv6_dst
, dst_str
, sizeof dst_str
);
651 ds_put_format(ds
, "(src=%s,dst=%s,label=%#"PRIx32
",proto=%"PRIu8
652 ",tclass=%#"PRIx8
",hlimit=%"PRIu8
",frag=%s)",
653 src_str
, dst_str
, ntohl(ipv6_key
->ipv6_label
),
654 ipv6_key
->ipv6_proto
, ipv6_key
->ipv6_tclass
,
655 ipv6_key
->ipv6_hlimit
,
656 ovs_frag_type_to_string(ipv6_key
->ipv6_frag
));
660 case OVS_KEY_ATTR_TCP
:
661 tcp_key
= nl_attr_get(a
);
662 ds_put_format(ds
, "(src=%"PRIu16
",dst=%"PRIu16
")",
663 ntohs(tcp_key
->tcp_src
), ntohs(tcp_key
->tcp_dst
));
666 case OVS_KEY_ATTR_UDP
:
667 udp_key
= nl_attr_get(a
);
668 ds_put_format(ds
, "(src=%"PRIu16
",dst=%"PRIu16
")",
669 ntohs(udp_key
->udp_src
), ntohs(udp_key
->udp_dst
));
672 case OVS_KEY_ATTR_ICMP
:
673 icmp_key
= nl_attr_get(a
);
674 ds_put_format(ds
, "(type=%"PRIu8
",code=%"PRIu8
")",
675 icmp_key
->icmp_type
, icmp_key
->icmp_code
);
678 case OVS_KEY_ATTR_ICMPV6
:
679 icmpv6_key
= nl_attr_get(a
);
680 ds_put_format(ds
, "(type=%"PRIu8
",code=%"PRIu8
")",
681 icmpv6_key
->icmpv6_type
, icmpv6_key
->icmpv6_code
);
684 case OVS_KEY_ATTR_ARP
:
685 arp_key
= nl_attr_get(a
);
686 ds_put_format(ds
, "(sip="IP_FMT
",tip="IP_FMT
",op=%"PRIu16
","
687 "sha="ETH_ADDR_FMT
",tha="ETH_ADDR_FMT
")",
688 IP_ARGS(&arp_key
->arp_sip
), IP_ARGS(&arp_key
->arp_tip
),
689 ntohs(arp_key
->arp_op
), ETH_ADDR_ARGS(arp_key
->arp_sha
),
690 ETH_ADDR_ARGS(arp_key
->arp_tha
));
693 case OVS_KEY_ATTR_ND
: {
694 char target
[INET6_ADDRSTRLEN
];
696 nd_key
= nl_attr_get(a
);
697 inet_ntop(AF_INET6
, nd_key
->nd_target
, target
, sizeof target
);
699 ds_put_format(ds
, "(target=%s", target
);
700 if (!eth_addr_is_zero(nd_key
->nd_sll
)) {
701 ds_put_format(ds
, ",sll="ETH_ADDR_FMT
,
702 ETH_ADDR_ARGS(nd_key
->nd_sll
));
704 if (!eth_addr_is_zero(nd_key
->nd_tll
)) {
705 ds_put_format(ds
, ",tll="ETH_ADDR_FMT
,
706 ETH_ADDR_ARGS(nd_key
->nd_tll
));
708 ds_put_char(ds
, ')');
712 case OVS_KEY_ATTR_UNSPEC
:
713 case __OVS_KEY_ATTR_MAX
:
715 format_generic_odp_key(a
, ds
);
720 /* Appends to 'ds' a string representation of the 'key_len' bytes of
721 * OVS_KEY_ATTR_* attributes in 'key'. */
723 odp_flow_key_format(const struct nlattr
*key
, size_t key_len
, struct ds
*ds
)
726 const struct nlattr
*a
;
729 NL_ATTR_FOR_EACH (a
, left
, key
, key_len
) {
731 ds_put_char(ds
, ',');
733 format_odp_key_attr(a
, ds
);
738 if (left
== key_len
) {
739 ds_put_cstr(ds
, "<empty>");
741 ds_put_format(ds
, ",***%u leftover bytes*** (", left
);
742 for (i
= 0; i
< left
; i
++) {
743 ds_put_format(ds
, "%02x", ((const uint8_t *) a
)[i
]);
745 ds_put_char(ds
, ')');
748 ds_put_cstr(ds
, "<empty>");
753 put_nd_key(int n
, const char *nd_target_s
,
754 const uint8_t *nd_sll
, const uint8_t *nd_tll
, struct ofpbuf
*key
)
756 struct ovs_key_nd nd_key
;
758 memset(&nd_key
, 0, sizeof nd_key
);
759 if (inet_pton(AF_INET6
, nd_target_s
, nd_key
.nd_target
) != 1) {
763 memcpy(nd_key
.nd_sll
, nd_sll
, ETH_ADDR_LEN
);
766 memcpy(nd_key
.nd_tll
, nd_tll
, ETH_ADDR_LEN
);
768 nl_msg_put_unspec(key
, OVS_KEY_ATTR_ND
, &nd_key
, sizeof nd_key
);
773 ovs_frag_type_from_string(const char *s
, enum ovs_frag_type
*type
)
775 if (!strcasecmp(s
, "no")) {
776 *type
= OVS_FRAG_TYPE_NONE
;
777 } else if (!strcasecmp(s
, "first")) {
778 *type
= OVS_FRAG_TYPE_FIRST
;
779 } else if (!strcasecmp(s
, "later")) {
780 *type
= OVS_FRAG_TYPE_LATER
;
788 parse_odp_key_attr(const char *s
, const struct shash
*port_names
,
791 /* Many of the sscanf calls in this function use oversized destination
792 * fields because some sscanf() implementations truncate the range of %i
793 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
794 * value of 0x7fff. The other alternatives are to allow only a single
795 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
798 * The tun_id parser has to use an alternative approach because there is no
799 * type larger than 64 bits. */
802 unsigned long long int priority
;
805 if (sscanf(s
, "priority(%lli)%n", &priority
, &n
) > 0 && n
> 0) {
806 nl_msg_put_u32(key
, OVS_KEY_ATTR_PRIORITY
, priority
);
815 if (sscanf(s
, "tun_id(%31[x0123456789abcdefABCDEF])%n",
816 tun_id_s
, &n
) > 0 && n
> 0) {
817 uint64_t tun_id
= strtoull(tun_id_s
, NULL
, 0);
818 nl_msg_put_be64(key
, OVS_KEY_ATTR_TUN_ID
, htonll(tun_id
));
824 unsigned long long int in_port
;
827 if (sscanf(s
, "in_port(%lli)%n", &in_port
, &n
) > 0 && n
> 0) {
828 nl_msg_put_u32(key
, OVS_KEY_ATTR_IN_PORT
, in_port
);
833 if (port_names
&& !strncmp(s
, "in_port(", 8)) {
835 const struct shash_node
*node
;
839 name_len
= strcspn(s
, ")");
840 node
= shash_find_len(port_names
, name
, name_len
);
842 nl_msg_put_u32(key
, OVS_KEY_ATTR_IN_PORT
, (uintptr_t) node
->data
);
843 return 8 + name_len
+ 1;
848 struct ovs_key_ethernet eth_key
;
852 "eth(src="ETH_ADDR_SCAN_FMT
",dst="ETH_ADDR_SCAN_FMT
")%n",
853 ETH_ADDR_SCAN_ARGS(eth_key
.eth_src
),
854 ETH_ADDR_SCAN_ARGS(eth_key
.eth_dst
), &n
) > 0 && n
> 0) {
855 nl_msg_put_unspec(key
, OVS_KEY_ATTR_ETHERNET
,
856 ð_key
, sizeof eth_key
);
867 if ((sscanf(s
, "vlan(vid=%"SCNi16
",pcp=%i)%n", &vid
, &pcp
, &n
) > 0
869 nl_msg_put_be16(key
, OVS_KEY_ATTR_VLAN
,
870 htons((vid
<< VLAN_VID_SHIFT
) |
871 (pcp
<< VLAN_PCP_SHIFT
) |
874 } else if ((sscanf(s
, "vlan(vid=%"SCNi16
",pcp=%i,cfi=%i)%n",
875 &vid
, &pcp
, &cfi
, &n
) > 0
877 nl_msg_put_be16(key
, OVS_KEY_ATTR_VLAN
,
878 htons((vid
<< VLAN_VID_SHIFT
) |
879 (pcp
<< VLAN_PCP_SHIFT
) |
880 (cfi
? VLAN_CFI
: 0)));
889 if (sscanf(s
, "eth_type(%i)%n", ð_type
, &n
) > 0 && n
> 0) {
890 nl_msg_put_be16(key
, OVS_KEY_ATTR_ETHERTYPE
, htons(eth_type
));
902 enum ovs_frag_type ipv4_frag
;
905 if (sscanf(s
, "ipv4(src="IP_SCAN_FMT
",dst="IP_SCAN_FMT
","
906 "proto=%i,tos=%i,ttl=%i,frag=%7[a-z])%n",
907 IP_SCAN_ARGS(&ipv4_src
), IP_SCAN_ARGS(&ipv4_dst
),
908 &ipv4_proto
, &ipv4_tos
, &ipv4_ttl
, frag
, &n
) > 0
910 && ovs_frag_type_from_string(frag
, &ipv4_frag
)) {
911 struct ovs_key_ipv4 ipv4_key
;
913 ipv4_key
.ipv4_src
= ipv4_src
;
914 ipv4_key
.ipv4_dst
= ipv4_dst
;
915 ipv4_key
.ipv4_proto
= ipv4_proto
;
916 ipv4_key
.ipv4_tos
= ipv4_tos
;
917 ipv4_key
.ipv4_ttl
= ipv4_ttl
;
918 ipv4_key
.ipv4_frag
= ipv4_frag
;
919 nl_msg_put_unspec(key
, OVS_KEY_ATTR_IPV4
,
920 &ipv4_key
, sizeof ipv4_key
);
926 char ipv6_src_s
[IPV6_SCAN_LEN
+ 1];
927 char ipv6_dst_s
[IPV6_SCAN_LEN
+ 1];
933 enum ovs_frag_type ipv6_frag
;
936 if (sscanf(s
, "ipv6(src="IPV6_SCAN_FMT
",dst="IPV6_SCAN_FMT
","
937 "label=%i,proto=%i,tclass=%i,hlimit=%i,frag=%7[a-z])%n",
938 ipv6_src_s
, ipv6_dst_s
, &ipv6_label
,
939 &ipv6_proto
, &ipv6_tclass
, &ipv6_hlimit
, frag
, &n
) > 0
941 && ovs_frag_type_from_string(frag
, &ipv6_frag
)) {
942 struct ovs_key_ipv6 ipv6_key
;
944 if (inet_pton(AF_INET6
, ipv6_src_s
, &ipv6_key
.ipv6_src
) != 1 ||
945 inet_pton(AF_INET6
, ipv6_dst_s
, &ipv6_key
.ipv6_dst
) != 1) {
948 ipv6_key
.ipv6_label
= htonl(ipv6_label
);
949 ipv6_key
.ipv6_proto
= ipv6_proto
;
950 ipv6_key
.ipv6_tclass
= ipv6_tclass
;
951 ipv6_key
.ipv6_hlimit
= ipv6_hlimit
;
952 ipv6_key
.ipv6_frag
= ipv6_frag
;
953 nl_msg_put_unspec(key
, OVS_KEY_ATTR_IPV6
,
954 &ipv6_key
, sizeof ipv6_key
);
964 if (sscanf(s
, "tcp(src=%i,dst=%i)%n",&tcp_src
, &tcp_dst
, &n
) > 0
966 struct ovs_key_tcp tcp_key
;
968 tcp_key
.tcp_src
= htons(tcp_src
);
969 tcp_key
.tcp_dst
= htons(tcp_dst
);
970 nl_msg_put_unspec(key
, OVS_KEY_ATTR_TCP
, &tcp_key
, sizeof tcp_key
);
980 if (sscanf(s
, "udp(src=%i,dst=%i)%n", &udp_src
, &udp_dst
, &n
) > 0
982 struct ovs_key_udp udp_key
;
984 udp_key
.udp_src
= htons(udp_src
);
985 udp_key
.udp_dst
= htons(udp_dst
);
986 nl_msg_put_unspec(key
, OVS_KEY_ATTR_UDP
, &udp_key
, sizeof udp_key
);
996 if (sscanf(s
, "icmp(type=%i,code=%i)%n",
997 &icmp_type
, &icmp_code
, &n
) > 0
999 struct ovs_key_icmp icmp_key
;
1001 icmp_key
.icmp_type
= icmp_type
;
1002 icmp_key
.icmp_code
= icmp_code
;
1003 nl_msg_put_unspec(key
, OVS_KEY_ATTR_ICMP
,
1004 &icmp_key
, sizeof icmp_key
);
1010 struct ovs_key_icmpv6 icmpv6_key
;
1013 if (sscanf(s
, "icmpv6(type=%"SCNi8
",code=%"SCNi8
")%n",
1014 &icmpv6_key
.icmpv6_type
, &icmpv6_key
.icmpv6_code
,&n
) > 0
1016 nl_msg_put_unspec(key
, OVS_KEY_ATTR_ICMPV6
,
1017 &icmpv6_key
, sizeof icmpv6_key
);
1026 uint8_t arp_sha
[ETH_ADDR_LEN
];
1027 uint8_t arp_tha
[ETH_ADDR_LEN
];
1030 if (sscanf(s
, "arp(sip="IP_SCAN_FMT
",tip="IP_SCAN_FMT
","
1031 "op=%i,sha="ETH_ADDR_SCAN_FMT
",tha="ETH_ADDR_SCAN_FMT
")%n",
1032 IP_SCAN_ARGS(&arp_sip
),
1033 IP_SCAN_ARGS(&arp_tip
),
1035 ETH_ADDR_SCAN_ARGS(arp_sha
),
1036 ETH_ADDR_SCAN_ARGS(arp_tha
), &n
) > 0 && n
> 0) {
1037 struct ovs_key_arp arp_key
;
1039 memset(&arp_key
, 0, sizeof arp_key
);
1040 arp_key
.arp_sip
= arp_sip
;
1041 arp_key
.arp_tip
= arp_tip
;
1042 arp_key
.arp_op
= htons(arp_op
);
1043 memcpy(arp_key
.arp_sha
, arp_sha
, ETH_ADDR_LEN
);
1044 memcpy(arp_key
.arp_tha
, arp_tha
, ETH_ADDR_LEN
);
1045 nl_msg_put_unspec(key
, OVS_KEY_ATTR_ARP
, &arp_key
, sizeof arp_key
);
1051 char nd_target_s
[IPV6_SCAN_LEN
+ 1];
1052 uint8_t nd_sll
[ETH_ADDR_LEN
];
1053 uint8_t nd_tll
[ETH_ADDR_LEN
];
1056 if (sscanf(s
, "nd(target="IPV6_SCAN_FMT
")%n",
1057 nd_target_s
, &n
) > 0 && n
> 0) {
1058 return put_nd_key(n
, nd_target_s
, NULL
, NULL
, key
);
1060 if (sscanf(s
, "nd(target="IPV6_SCAN_FMT
",sll="ETH_ADDR_SCAN_FMT
")%n",
1061 nd_target_s
, ETH_ADDR_SCAN_ARGS(nd_sll
), &n
) > 0
1063 return put_nd_key(n
, nd_target_s
, nd_sll
, NULL
, key
);
1065 if (sscanf(s
, "nd(target="IPV6_SCAN_FMT
",tll="ETH_ADDR_SCAN_FMT
")%n",
1066 nd_target_s
, ETH_ADDR_SCAN_ARGS(nd_tll
), &n
) > 0
1068 return put_nd_key(n
, nd_target_s
, NULL
, nd_tll
, key
);
1070 if (sscanf(s
, "nd(target="IPV6_SCAN_FMT
",sll="ETH_ADDR_SCAN_FMT
","
1071 "tll="ETH_ADDR_SCAN_FMT
")%n",
1072 nd_target_s
, ETH_ADDR_SCAN_ARGS(nd_sll
),
1073 ETH_ADDR_SCAN_ARGS(nd_tll
), &n
) > 0
1075 return put_nd_key(n
, nd_target_s
, nd_sll
, nd_tll
, key
);
1079 if (!strncmp(s
, "encap(", 6)) {
1080 const char *start
= s
;
1083 encap
= nl_msg_start_nested(key
, OVS_KEY_ATTR_ENCAP
);
1089 s
+= strspn(s
, ", \t\r\n");
1092 } else if (*s
== ')') {
1096 retval
= parse_odp_key_attr(s
, port_names
, key
);
1104 nl_msg_end_nested(key
, encap
);
1112 /* Parses the string representation of a datapath flow key, in the
1113 * format output by odp_flow_key_format(). Returns 0 if successful,
1114 * otherwise a positive errno value. On success, the flow key is
1115 * appended to 'key' as a series of Netlink attributes. On failure, no
1116 * data is appended to 'key'. Either way, 'key''s data might be
1119 * If 'port_names' is nonnull, it points to an shash that maps from a port name
1120 * to a port number cast to void *. (Port names may be used instead of port
1121 * numbers in in_port.)
1123 * On success, the attributes appended to 'key' are individually syntactically
1124 * valid, but they may not be valid as a sequence. 'key' might, for example,
1125 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
1127 odp_flow_key_from_string(const char *s
, const struct shash
*port_names
,
1130 const size_t old_size
= key
->size
;
1134 s
+= strspn(s
, delimiters
);
1139 retval
= parse_odp_key_attr(s
, port_names
, key
);
1141 key
->size
= old_size
;
1151 ovs_to_odp_frag(uint8_t nw_frag
)
1153 return (nw_frag
== 0 ? OVS_FRAG_TYPE_NONE
1154 : nw_frag
== FLOW_NW_FRAG_ANY
? OVS_FRAG_TYPE_FIRST
1155 : OVS_FRAG_TYPE_LATER
);
1158 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'. */
1160 odp_flow_key_from_flow(struct ofpbuf
*buf
, const struct flow
*flow
)
1162 struct ovs_key_ethernet
*eth_key
;
1165 if (flow
->skb_priority
) {
1166 nl_msg_put_u32(buf
, OVS_KEY_ATTR_PRIORITY
, flow
->skb_priority
);
1169 if (flow
->tun_id
!= htonll(0)) {
1170 nl_msg_put_be64(buf
, OVS_KEY_ATTR_TUN_ID
, flow
->tun_id
);
1173 if (flow
->in_port
!= OFPP_NONE
) {
1174 nl_msg_put_u32(buf
, OVS_KEY_ATTR_IN_PORT
,
1175 ofp_port_to_odp_port(flow
->in_port
));
1178 eth_key
= nl_msg_put_unspec_uninit(buf
, OVS_KEY_ATTR_ETHERNET
,
1180 memcpy(eth_key
->eth_src
, flow
->dl_src
, ETH_ADDR_LEN
);
1181 memcpy(eth_key
->eth_dst
, flow
->dl_dst
, ETH_ADDR_LEN
);
1183 if (flow
->vlan_tci
!= htons(0) || flow
->dl_type
== htons(ETH_TYPE_VLAN
)) {
1184 nl_msg_put_be16(buf
, OVS_KEY_ATTR_ETHERTYPE
, htons(ETH_TYPE_VLAN
));
1185 nl_msg_put_be16(buf
, OVS_KEY_ATTR_VLAN
, flow
->vlan_tci
);
1186 encap
= nl_msg_start_nested(buf
, OVS_KEY_ATTR_ENCAP
);
1187 if (flow
->vlan_tci
== htons(0)) {
1194 if (ntohs(flow
->dl_type
) < ETH_TYPE_MIN
) {
1198 nl_msg_put_be16(buf
, OVS_KEY_ATTR_ETHERTYPE
, flow
->dl_type
);
1200 if (flow
->dl_type
== htons(ETH_TYPE_IP
)) {
1201 struct ovs_key_ipv4
*ipv4_key
;
1203 ipv4_key
= nl_msg_put_unspec_uninit(buf
, OVS_KEY_ATTR_IPV4
,
1205 ipv4_key
->ipv4_src
= flow
->nw_src
;
1206 ipv4_key
->ipv4_dst
= flow
->nw_dst
;
1207 ipv4_key
->ipv4_proto
= flow
->nw_proto
;
1208 ipv4_key
->ipv4_tos
= flow
->nw_tos
;
1209 ipv4_key
->ipv4_ttl
= flow
->nw_ttl
;
1210 ipv4_key
->ipv4_frag
= ovs_to_odp_frag(flow
->nw_frag
);
1211 } else if (flow
->dl_type
== htons(ETH_TYPE_IPV6
)) {
1212 struct ovs_key_ipv6
*ipv6_key
;
1214 ipv6_key
= nl_msg_put_unspec_uninit(buf
, OVS_KEY_ATTR_IPV6
,
1216 memcpy(ipv6_key
->ipv6_src
, &flow
->ipv6_src
, sizeof ipv6_key
->ipv6_src
);
1217 memcpy(ipv6_key
->ipv6_dst
, &flow
->ipv6_dst
, sizeof ipv6_key
->ipv6_dst
);
1218 ipv6_key
->ipv6_label
= flow
->ipv6_label
;
1219 ipv6_key
->ipv6_proto
= flow
->nw_proto
;
1220 ipv6_key
->ipv6_tclass
= flow
->nw_tos
;
1221 ipv6_key
->ipv6_hlimit
= flow
->nw_ttl
;
1222 ipv6_key
->ipv6_frag
= ovs_to_odp_frag(flow
->nw_frag
);
1223 } else if (flow
->dl_type
== htons(ETH_TYPE_ARP
)) {
1224 struct ovs_key_arp
*arp_key
;
1226 arp_key
= nl_msg_put_unspec_uninit(buf
, OVS_KEY_ATTR_ARP
,
1228 memset(arp_key
, 0, sizeof *arp_key
);
1229 arp_key
->arp_sip
= flow
->nw_src
;
1230 arp_key
->arp_tip
= flow
->nw_dst
;
1231 arp_key
->arp_op
= htons(flow
->nw_proto
);
1232 memcpy(arp_key
->arp_sha
, flow
->arp_sha
, ETH_ADDR_LEN
);
1233 memcpy(arp_key
->arp_tha
, flow
->arp_tha
, ETH_ADDR_LEN
);
1236 if ((flow
->dl_type
== htons(ETH_TYPE_IP
)
1237 || flow
->dl_type
== htons(ETH_TYPE_IPV6
))
1238 && !(flow
->nw_frag
& FLOW_NW_FRAG_LATER
)) {
1240 if (flow
->nw_proto
== IPPROTO_TCP
) {
1241 struct ovs_key_tcp
*tcp_key
;
1243 tcp_key
= nl_msg_put_unspec_uninit(buf
, OVS_KEY_ATTR_TCP
,
1245 tcp_key
->tcp_src
= flow
->tp_src
;
1246 tcp_key
->tcp_dst
= flow
->tp_dst
;
1247 } else if (flow
->nw_proto
== IPPROTO_UDP
) {
1248 struct ovs_key_udp
*udp_key
;
1250 udp_key
= nl_msg_put_unspec_uninit(buf
, OVS_KEY_ATTR_UDP
,
1252 udp_key
->udp_src
= flow
->tp_src
;
1253 udp_key
->udp_dst
= flow
->tp_dst
;
1254 } else if (flow
->dl_type
== htons(ETH_TYPE_IP
)
1255 && flow
->nw_proto
== IPPROTO_ICMP
) {
1256 struct ovs_key_icmp
*icmp_key
;
1258 icmp_key
= nl_msg_put_unspec_uninit(buf
, OVS_KEY_ATTR_ICMP
,
1260 icmp_key
->icmp_type
= ntohs(flow
->tp_src
);
1261 icmp_key
->icmp_code
= ntohs(flow
->tp_dst
);
1262 } else if (flow
->dl_type
== htons(ETH_TYPE_IPV6
)
1263 && flow
->nw_proto
== IPPROTO_ICMPV6
) {
1264 struct ovs_key_icmpv6
*icmpv6_key
;
1266 icmpv6_key
= nl_msg_put_unspec_uninit(buf
, OVS_KEY_ATTR_ICMPV6
,
1267 sizeof *icmpv6_key
);
1268 icmpv6_key
->icmpv6_type
= ntohs(flow
->tp_src
);
1269 icmpv6_key
->icmpv6_code
= ntohs(flow
->tp_dst
);
1271 if (icmpv6_key
->icmpv6_type
== ND_NEIGHBOR_SOLICIT
1272 || icmpv6_key
->icmpv6_type
== ND_NEIGHBOR_ADVERT
) {
1273 struct ovs_key_nd
*nd_key
;
1275 nd_key
= nl_msg_put_unspec_uninit(buf
, OVS_KEY_ATTR_ND
,
1277 memcpy(nd_key
->nd_target
, &flow
->nd_target
,
1278 sizeof nd_key
->nd_target
);
1279 memcpy(nd_key
->nd_sll
, flow
->arp_sha
, ETH_ADDR_LEN
);
1280 memcpy(nd_key
->nd_tll
, flow
->arp_tha
, ETH_ADDR_LEN
);
1287 nl_msg_end_nested(buf
, encap
);
1292 odp_flow_key_hash(const struct nlattr
*key
, size_t key_len
)
1294 BUILD_ASSERT_DECL(!(NLA_ALIGNTO
% sizeof(uint32_t)));
1295 return hash_words((const uint32_t *) key
, key_len
/ sizeof(uint32_t), 0);
1299 log_odp_key_attributes(struct vlog_rate_limit
*rl
, const char *title
,
1300 uint64_t attrs
, int out_of_range_attr
,
1301 const struct nlattr
*key
, size_t key_len
)
1306 if (VLOG_DROP_DBG(rl
)) {
1311 for (i
= 0; i
< 64; i
++) {
1312 if (attrs
& (UINT64_C(1) << i
)) {
1313 ds_put_format(&s
, " %s", ovs_key_attr_to_string(i
));
1316 if (out_of_range_attr
) {
1317 ds_put_format(&s
, " %d (and possibly others)", out_of_range_attr
);
1320 ds_put_cstr(&s
, ": ");
1321 odp_flow_key_format(key
, key_len
, &s
);
1323 VLOG_DBG("%s:%s", title
, ds_cstr(&s
));
1328 odp_to_ovs_frag(uint8_t odp_frag
, struct flow
*flow
)
1330 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1332 if (odp_frag
> OVS_FRAG_TYPE_LATER
) {
1333 VLOG_ERR_RL(&rl
, "invalid frag %"PRIu8
" in flow key", odp_frag
);
1337 if (odp_frag
!= OVS_FRAG_TYPE_NONE
) {
1338 flow
->nw_frag
|= FLOW_NW_FRAG_ANY
;
1339 if (odp_frag
== OVS_FRAG_TYPE_LATER
) {
1340 flow
->nw_frag
|= FLOW_NW_FRAG_LATER
;
1347 parse_flow_nlattrs(const struct nlattr
*key
, size_t key_len
,
1348 const struct nlattr
*attrs
[], uint64_t *present_attrsp
,
1349 int *out_of_range_attrp
)
1351 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(10, 10);
1352 const struct nlattr
*nla
;
1353 uint64_t present_attrs
;
1357 *out_of_range_attrp
= 0;
1358 NL_ATTR_FOR_EACH (nla
, left
, key
, key_len
) {
1359 uint16_t type
= nl_attr_type(nla
);
1360 size_t len
= nl_attr_get_size(nla
);
1361 int expected_len
= odp_flow_key_attr_len(type
);
1363 if (len
!= expected_len
&& expected_len
>= 0) {
1364 VLOG_ERR_RL(&rl
, "attribute %s has length %zu but should have "
1365 "length %d", ovs_key_attr_to_string(type
),
1370 if (type
>= CHAR_BIT
* sizeof present_attrs
) {
1371 *out_of_range_attrp
= type
;
1373 if (present_attrs
& (UINT64_C(1) << type
)) {
1374 VLOG_ERR_RL(&rl
, "duplicate %s attribute in flow key",
1375 ovs_key_attr_to_string(type
));
1379 present_attrs
|= UINT64_C(1) << type
;
1384 VLOG_ERR_RL(&rl
, "trailing garbage in flow key");
1388 *present_attrsp
= present_attrs
;
1392 static enum odp_key_fitness
1393 check_expectations(uint64_t present_attrs
, int out_of_range_attr
,
1394 uint64_t expected_attrs
,
1395 const struct nlattr
*key
, size_t key_len
)
1397 uint64_t missing_attrs
;
1398 uint64_t extra_attrs
;
1400 missing_attrs
= expected_attrs
& ~present_attrs
;
1401 if (missing_attrs
) {
1402 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(10, 10);
1403 log_odp_key_attributes(&rl
, "expected but not present",
1404 missing_attrs
, 0, key
, key_len
);
1405 return ODP_FIT_TOO_LITTLE
;
1408 extra_attrs
= present_attrs
& ~expected_attrs
;
1409 if (extra_attrs
|| out_of_range_attr
) {
1410 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(10, 10);
1411 log_odp_key_attributes(&rl
, "present but not expected",
1412 extra_attrs
, out_of_range_attr
, key
, key_len
);
1413 return ODP_FIT_TOO_MUCH
;
1416 return ODP_FIT_PERFECT
;
1420 parse_ethertype(const struct nlattr
*attrs
[OVS_KEY_ATTR_MAX
+ 1],
1421 uint64_t present_attrs
, uint64_t *expected_attrs
,
1424 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1426 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE
)) {
1427 flow
->dl_type
= nl_attr_get_be16(attrs
[OVS_KEY_ATTR_ETHERTYPE
]);
1428 if (ntohs(flow
->dl_type
) < 1536) {
1429 VLOG_ERR_RL(&rl
, "invalid Ethertype %"PRIu16
" in flow key",
1430 ntohs(flow
->dl_type
));
1433 *expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE
;
1435 flow
->dl_type
= htons(FLOW_DL_TYPE_NONE
);
1440 static enum odp_key_fitness
1441 parse_l3_onward(const struct nlattr
*attrs
[OVS_KEY_ATTR_MAX
+ 1],
1442 uint64_t present_attrs
, int out_of_range_attr
,
1443 uint64_t expected_attrs
, struct flow
*flow
,
1444 const struct nlattr
*key
, size_t key_len
)
1446 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1448 if (flow
->dl_type
== htons(ETH_TYPE_IP
)) {
1449 expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_IPV4
;
1450 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_IPV4
)) {
1451 const struct ovs_key_ipv4
*ipv4_key
;
1453 ipv4_key
= nl_attr_get(attrs
[OVS_KEY_ATTR_IPV4
]);
1454 flow
->nw_src
= ipv4_key
->ipv4_src
;
1455 flow
->nw_dst
= ipv4_key
->ipv4_dst
;
1456 flow
->nw_proto
= ipv4_key
->ipv4_proto
;
1457 flow
->nw_tos
= ipv4_key
->ipv4_tos
;
1458 flow
->nw_ttl
= ipv4_key
->ipv4_ttl
;
1459 if (!odp_to_ovs_frag(ipv4_key
->ipv4_frag
, flow
)) {
1460 return ODP_FIT_ERROR
;
1463 } else if (flow
->dl_type
== htons(ETH_TYPE_IPV6
)) {
1464 expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_IPV6
;
1465 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_IPV6
)) {
1466 const struct ovs_key_ipv6
*ipv6_key
;
1468 ipv6_key
= nl_attr_get(attrs
[OVS_KEY_ATTR_IPV6
]);
1469 memcpy(&flow
->ipv6_src
, ipv6_key
->ipv6_src
, sizeof flow
->ipv6_src
);
1470 memcpy(&flow
->ipv6_dst
, ipv6_key
->ipv6_dst
, sizeof flow
->ipv6_dst
);
1471 flow
->ipv6_label
= ipv6_key
->ipv6_label
;
1472 flow
->nw_proto
= ipv6_key
->ipv6_proto
;
1473 flow
->nw_tos
= ipv6_key
->ipv6_tclass
;
1474 flow
->nw_ttl
= ipv6_key
->ipv6_hlimit
;
1475 if (!odp_to_ovs_frag(ipv6_key
->ipv6_frag
, flow
)) {
1476 return ODP_FIT_ERROR
;
1479 } else if (flow
->dl_type
== htons(ETH_TYPE_ARP
)) {
1480 expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_ARP
;
1481 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_ARP
)) {
1482 const struct ovs_key_arp
*arp_key
;
1484 arp_key
= nl_attr_get(attrs
[OVS_KEY_ATTR_ARP
]);
1485 flow
->nw_src
= arp_key
->arp_sip
;
1486 flow
->nw_dst
= arp_key
->arp_tip
;
1487 if (arp_key
->arp_op
& htons(0xff00)) {
1488 VLOG_ERR_RL(&rl
, "unsupported ARP opcode %"PRIu16
" in flow "
1489 "key", ntohs(arp_key
->arp_op
));
1490 return ODP_FIT_ERROR
;
1492 flow
->nw_proto
= ntohs(arp_key
->arp_op
);
1493 memcpy(flow
->arp_sha
, arp_key
->arp_sha
, ETH_ADDR_LEN
);
1494 memcpy(flow
->arp_tha
, arp_key
->arp_tha
, ETH_ADDR_LEN
);
1498 if (flow
->nw_proto
== IPPROTO_TCP
1499 && (flow
->dl_type
== htons(ETH_TYPE_IP
) ||
1500 flow
->dl_type
== htons(ETH_TYPE_IPV6
))
1501 && !(flow
->nw_frag
& FLOW_NW_FRAG_LATER
)) {
1502 expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_TCP
;
1503 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_TCP
)) {
1504 const struct ovs_key_tcp
*tcp_key
;
1506 tcp_key
= nl_attr_get(attrs
[OVS_KEY_ATTR_TCP
]);
1507 flow
->tp_src
= tcp_key
->tcp_src
;
1508 flow
->tp_dst
= tcp_key
->tcp_dst
;
1510 } else if (flow
->nw_proto
== IPPROTO_UDP
1511 && (flow
->dl_type
== htons(ETH_TYPE_IP
) ||
1512 flow
->dl_type
== htons(ETH_TYPE_IPV6
))
1513 && !(flow
->nw_frag
& FLOW_NW_FRAG_LATER
)) {
1514 expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_UDP
;
1515 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_UDP
)) {
1516 const struct ovs_key_udp
*udp_key
;
1518 udp_key
= nl_attr_get(attrs
[OVS_KEY_ATTR_UDP
]);
1519 flow
->tp_src
= udp_key
->udp_src
;
1520 flow
->tp_dst
= udp_key
->udp_dst
;
1522 } else if (flow
->nw_proto
== IPPROTO_ICMP
1523 && flow
->dl_type
== htons(ETH_TYPE_IP
)
1524 && !(flow
->nw_frag
& FLOW_NW_FRAG_LATER
)) {
1525 expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_ICMP
;
1526 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_ICMP
)) {
1527 const struct ovs_key_icmp
*icmp_key
;
1529 icmp_key
= nl_attr_get(attrs
[OVS_KEY_ATTR_ICMP
]);
1530 flow
->tp_src
= htons(icmp_key
->icmp_type
);
1531 flow
->tp_dst
= htons(icmp_key
->icmp_code
);
1533 } else if (flow
->nw_proto
== IPPROTO_ICMPV6
1534 && flow
->dl_type
== htons(ETH_TYPE_IPV6
)
1535 && !(flow
->nw_frag
& FLOW_NW_FRAG_LATER
)) {
1536 expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6
;
1537 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6
)) {
1538 const struct ovs_key_icmpv6
*icmpv6_key
;
1540 icmpv6_key
= nl_attr_get(attrs
[OVS_KEY_ATTR_ICMPV6
]);
1541 flow
->tp_src
= htons(icmpv6_key
->icmpv6_type
);
1542 flow
->tp_dst
= htons(icmpv6_key
->icmpv6_code
);
1544 if (flow
->tp_src
== htons(ND_NEIGHBOR_SOLICIT
) ||
1545 flow
->tp_src
== htons(ND_NEIGHBOR_ADVERT
)) {
1546 expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_ND
;
1547 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_ND
)) {
1548 const struct ovs_key_nd
*nd_key
;
1550 nd_key
= nl_attr_get(attrs
[OVS_KEY_ATTR_ND
]);
1551 memcpy(&flow
->nd_target
, nd_key
->nd_target
,
1552 sizeof flow
->nd_target
);
1553 memcpy(flow
->arp_sha
, nd_key
->nd_sll
, ETH_ADDR_LEN
);
1554 memcpy(flow
->arp_tha
, nd_key
->nd_tll
, ETH_ADDR_LEN
);
1560 return check_expectations(present_attrs
, out_of_range_attr
, expected_attrs
,
1564 /* Parse 802.1Q header then encapsulated L3 attributes. */
1565 static enum odp_key_fitness
1566 parse_8021q_onward(const struct nlattr
*attrs
[OVS_KEY_ATTR_MAX
+ 1],
1567 uint64_t present_attrs
, int out_of_range_attr
,
1568 uint64_t expected_attrs
, struct flow
*flow
,
1569 const struct nlattr
*key
, size_t key_len
)
1571 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1573 const struct nlattr
*encap
1574 = (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_ENCAP
)
1575 ? attrs
[OVS_KEY_ATTR_ENCAP
] : NULL
);
1576 enum odp_key_fitness encap_fitness
;
1577 enum odp_key_fitness fitness
;
1580 /* Calulate fitness of outer attributes. */
1581 expected_attrs
|= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN
) |
1582 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP
));
1583 fitness
= check_expectations(present_attrs
, out_of_range_attr
,
1584 expected_attrs
, key
, key_len
);
1586 /* Get the VLAN TCI value. */
1587 if (!(present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_VLAN
))) {
1588 return ODP_FIT_TOO_LITTLE
;
1590 tci
= nl_attr_get_be16(attrs
[OVS_KEY_ATTR_VLAN
]);
1591 if (tci
== htons(0)) {
1592 /* Corner case for a truncated 802.1Q header. */
1593 if (fitness
== ODP_FIT_PERFECT
&& nl_attr_get_size(encap
)) {
1594 return ODP_FIT_TOO_MUCH
;
1597 } else if (!(tci
& htons(VLAN_CFI
))) {
1598 VLOG_ERR_RL(&rl
, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16
" is nonzero "
1599 "but CFI bit is not set", ntohs(tci
));
1600 return ODP_FIT_ERROR
;
1604 * Remove the TPID from dl_type since it's not the real Ethertype. */
1605 flow
->vlan_tci
= tci
;
1606 flow
->dl_type
= htons(0);
1608 /* Now parse the encapsulated attributes. */
1609 if (!parse_flow_nlattrs(nl_attr_get(encap
), nl_attr_get_size(encap
),
1610 attrs
, &present_attrs
, &out_of_range_attr
)) {
1611 return ODP_FIT_ERROR
;
1615 if (!parse_ethertype(attrs
, present_attrs
, &expected_attrs
, flow
)) {
1616 return ODP_FIT_ERROR
;
1618 encap_fitness
= parse_l3_onward(attrs
, present_attrs
, out_of_range_attr
,
1619 expected_attrs
, flow
, key
, key_len
);
1621 /* The overall fitness is the worse of the outer and inner attributes. */
1622 return MAX(fitness
, encap_fitness
);
1625 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
1626 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
1627 * 'key' fits our expectations for what a flow key should contain.
1629 * This function doesn't take the packet itself as an argument because none of
1630 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
1631 * it is always possible to infer which additional attribute(s) should appear
1632 * by looking at the attributes for lower-level protocols, e.g. if the network
1633 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
1634 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
1635 * must be absent. */
1636 enum odp_key_fitness
1637 odp_flow_key_to_flow(const struct nlattr
*key
, size_t key_len
,
1640 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1641 const struct nlattr
*attrs
[OVS_KEY_ATTR_MAX
+ 1];
1642 uint64_t expected_attrs
;
1643 uint64_t present_attrs
;
1644 int out_of_range_attr
;
1646 memset(flow
, 0, sizeof *flow
);
1648 /* Parse attributes. */
1649 if (!parse_flow_nlattrs(key
, key_len
, attrs
, &present_attrs
,
1650 &out_of_range_attr
)) {
1651 return ODP_FIT_ERROR
;
1656 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY
)) {
1657 flow
->skb_priority
= nl_attr_get_u32(attrs
[OVS_KEY_ATTR_PRIORITY
]);
1658 expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY
;
1661 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_TUN_ID
)) {
1662 flow
->tun_id
= nl_attr_get_be64(attrs
[OVS_KEY_ATTR_TUN_ID
]);
1663 expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_TUN_ID
;
1666 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT
)) {
1667 uint32_t in_port
= nl_attr_get_u32(attrs
[OVS_KEY_ATTR_IN_PORT
]);
1668 if (in_port
>= UINT16_MAX
|| in_port
>= OFPP_MAX
) {
1669 VLOG_ERR_RL(&rl
, "in_port %"PRIu32
" out of supported range",
1671 return ODP_FIT_ERROR
;
1673 flow
->in_port
= odp_port_to_ofp_port(in_port
);
1674 expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT
;
1676 flow
->in_port
= OFPP_NONE
;
1679 /* Ethernet header. */
1680 if (present_attrs
& (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET
)) {
1681 const struct ovs_key_ethernet
*eth_key
;
1683 eth_key
= nl_attr_get(attrs
[OVS_KEY_ATTR_ETHERNET
]);
1684 memcpy(flow
->dl_src
, eth_key
->eth_src
, ETH_ADDR_LEN
);
1685 memcpy(flow
->dl_dst
, eth_key
->eth_dst
, ETH_ADDR_LEN
);
1687 expected_attrs
|= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET
;
1689 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
1690 if (!parse_ethertype(attrs
, present_attrs
, &expected_attrs
, flow
)) {
1691 return ODP_FIT_ERROR
;
1694 if (flow
->dl_type
== htons(ETH_TYPE_VLAN
)) {
1695 return parse_8021q_onward(attrs
, present_attrs
, out_of_range_attr
,
1696 expected_attrs
, flow
, key
, key_len
);
1698 return parse_l3_onward(attrs
, present_attrs
, out_of_range_attr
,
1699 expected_attrs
, flow
, key
, key_len
);
1702 /* Returns 'fitness' as a string, for use in debug messages. */
1704 odp_key_fitness_to_string(enum odp_key_fitness fitness
)
1707 case ODP_FIT_PERFECT
:
1709 case ODP_FIT_TOO_MUCH
:
1711 case ODP_FIT_TOO_LITTLE
:
1712 return "too_little";
1720 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
1721 * Netlink PID 'pid'. If 'cookie' is nonnull, adds a userdata attribute whose
1722 * contents contains 'cookie' and returns the offset within 'odp_actions' of
1723 * the start of the cookie. (If 'cookie' is null, then the return value is not
1726 odp_put_userspace_action(uint32_t pid
, const struct user_action_cookie
*cookie
,
1727 struct ofpbuf
*odp_actions
)
1731 offset
= nl_msg_start_nested(odp_actions
, OVS_ACTION_ATTR_USERSPACE
);
1732 nl_msg_put_u32(odp_actions
, OVS_USERSPACE_ATTR_PID
, pid
);
1734 nl_msg_put_unspec(odp_actions
, OVS_USERSPACE_ATTR_USERDATA
,
1735 cookie
, sizeof *cookie
);
1737 nl_msg_end_nested(odp_actions
, offset
);
1739 return cookie
? odp_actions
->size
- NLA_ALIGN(sizeof *cookie
) : 0;
1742 /* The commit_odp_actions() function and its helpers. */
1745 commit_set_action(struct ofpbuf
*odp_actions
, enum ovs_key_attr key_type
,
1746 const void *key
, size_t key_size
)
1748 size_t offset
= nl_msg_start_nested(odp_actions
, OVS_ACTION_ATTR_SET
);
1749 nl_msg_put_unspec(odp_actions
, key_type
, key
, key_size
);
1750 nl_msg_end_nested(odp_actions
, offset
);
1754 commit_set_tun_id_action(const struct flow
*flow
, struct flow
*base
,
1755 struct ofpbuf
*odp_actions
)
1757 if (base
->tun_id
== flow
->tun_id
) {
1760 base
->tun_id
= flow
->tun_id
;
1762 commit_set_action(odp_actions
, OVS_KEY_ATTR_TUN_ID
,
1763 &base
->tun_id
, sizeof(base
->tun_id
));
1767 commit_set_ether_addr_action(const struct flow
*flow
, struct flow
*base
,
1768 struct ofpbuf
*odp_actions
)
1770 struct ovs_key_ethernet eth_key
;
1772 if (eth_addr_equals(base
->dl_src
, flow
->dl_src
) &&
1773 eth_addr_equals(base
->dl_dst
, flow
->dl_dst
)) {
1777 memcpy(base
->dl_src
, flow
->dl_src
, ETH_ADDR_LEN
);
1778 memcpy(base
->dl_dst
, flow
->dl_dst
, ETH_ADDR_LEN
);
1780 memcpy(eth_key
.eth_src
, base
->dl_src
, ETH_ADDR_LEN
);
1781 memcpy(eth_key
.eth_dst
, base
->dl_dst
, ETH_ADDR_LEN
);
1783 commit_set_action(odp_actions
, OVS_KEY_ATTR_ETHERNET
,
1784 ð_key
, sizeof(eth_key
));
1788 commit_vlan_action(const struct flow
*flow
, struct flow
*base
,
1789 struct ofpbuf
*odp_actions
)
1791 if (base
->vlan_tci
== flow
->vlan_tci
) {
1795 if (base
->vlan_tci
& htons(VLAN_CFI
)) {
1796 nl_msg_put_flag(odp_actions
, OVS_ACTION_ATTR_POP_VLAN
);
1799 if (flow
->vlan_tci
& htons(VLAN_CFI
)) {
1800 struct ovs_action_push_vlan vlan
;
1802 vlan
.vlan_tpid
= htons(ETH_TYPE_VLAN
);
1803 vlan
.vlan_tci
= flow
->vlan_tci
;
1804 nl_msg_put_unspec(odp_actions
, OVS_ACTION_ATTR_PUSH_VLAN
,
1805 &vlan
, sizeof vlan
);
1807 base
->vlan_tci
= flow
->vlan_tci
;
1811 commit_set_ipv4_action(const struct flow
*flow
, struct flow
*base
,
1812 struct ofpbuf
*odp_actions
)
1814 struct ovs_key_ipv4 ipv4_key
;
1816 if (base
->nw_src
== flow
->nw_src
&&
1817 base
->nw_dst
== flow
->nw_dst
&&
1818 base
->nw_tos
== flow
->nw_tos
&&
1819 base
->nw_ttl
== flow
->nw_ttl
&&
1820 base
->nw_frag
== flow
->nw_frag
) {
1824 ipv4_key
.ipv4_src
= base
->nw_src
= flow
->nw_src
;
1825 ipv4_key
.ipv4_dst
= base
->nw_dst
= flow
->nw_dst
;
1826 ipv4_key
.ipv4_tos
= base
->nw_tos
= flow
->nw_tos
;
1827 ipv4_key
.ipv4_ttl
= base
->nw_ttl
= flow
->nw_ttl
;
1828 ipv4_key
.ipv4_proto
= base
->nw_proto
;
1829 ipv4_key
.ipv4_frag
= ovs_to_odp_frag(base
->nw_frag
);
1831 commit_set_action(odp_actions
, OVS_KEY_ATTR_IPV4
,
1832 &ipv4_key
, sizeof(ipv4_key
));
1836 commit_set_ipv6_action(const struct flow
*flow
, struct flow
*base
,
1837 struct ofpbuf
*odp_actions
)
1839 struct ovs_key_ipv6 ipv6_key
;
1841 if (ipv6_addr_equals(&base
->ipv6_src
, &flow
->ipv6_src
) &&
1842 ipv6_addr_equals(&base
->ipv6_dst
, &flow
->ipv6_dst
) &&
1843 base
->ipv6_label
== flow
->ipv6_label
&&
1844 base
->nw_tos
== flow
->nw_tos
&&
1845 base
->nw_ttl
== flow
->nw_ttl
&&
1846 base
->nw_frag
== flow
->nw_frag
) {
1850 base
->ipv6_src
= flow
->ipv6_src
;
1851 memcpy(&ipv6_key
.ipv6_src
, &base
->ipv6_src
, sizeof(ipv6_key
.ipv6_src
));
1852 base
->ipv6_dst
= flow
->ipv6_dst
;
1853 memcpy(&ipv6_key
.ipv6_dst
, &base
->ipv6_dst
, sizeof(ipv6_key
.ipv6_dst
));
1855 ipv6_key
.ipv6_label
= base
->ipv6_label
= flow
->ipv6_label
;
1856 ipv6_key
.ipv6_tclass
= base
->nw_tos
= flow
->nw_tos
;
1857 ipv6_key
.ipv6_hlimit
= base
->nw_ttl
= flow
->nw_ttl
;
1858 ipv6_key
.ipv6_proto
= base
->nw_proto
;
1859 ipv6_key
.ipv6_frag
= ovs_to_odp_frag(base
->nw_frag
);
1861 commit_set_action(odp_actions
, OVS_KEY_ATTR_IPV6
,
1862 &ipv6_key
, sizeof(ipv6_key
));
1866 commit_set_nw_action(const struct flow
*flow
, struct flow
*base
,
1867 struct ofpbuf
*odp_actions
)
1869 /* Check if flow really have an IP header. */
1870 if (!flow
->nw_proto
) {
1874 if (base
->dl_type
== htons(ETH_TYPE_IP
)) {
1875 commit_set_ipv4_action(flow
, base
, odp_actions
);
1876 } else if (base
->dl_type
== htons(ETH_TYPE_IPV6
)) {
1877 commit_set_ipv6_action(flow
, base
, odp_actions
);
1882 commit_set_port_action(const struct flow
*flow
, struct flow
*base
,
1883 struct ofpbuf
*odp_actions
)
1885 if (!base
->tp_src
|| !base
->tp_dst
) {
1889 if (base
->tp_src
== flow
->tp_src
&&
1890 base
->tp_dst
== flow
->tp_dst
) {
1894 if (flow
->nw_proto
== IPPROTO_TCP
) {
1895 struct ovs_key_tcp port_key
;
1897 port_key
.tcp_src
= base
->tp_src
= flow
->tp_src
;
1898 port_key
.tcp_dst
= base
->tp_dst
= flow
->tp_dst
;
1900 commit_set_action(odp_actions
, OVS_KEY_ATTR_TCP
,
1901 &port_key
, sizeof(port_key
));
1903 } else if (flow
->nw_proto
== IPPROTO_UDP
) {
1904 struct ovs_key_udp port_key
;
1906 port_key
.udp_src
= base
->tp_src
= flow
->tp_src
;
1907 port_key
.udp_dst
= base
->tp_dst
= flow
->tp_dst
;
1909 commit_set_action(odp_actions
, OVS_KEY_ATTR_UDP
,
1910 &port_key
, sizeof(port_key
));
1915 commit_set_priority_action(const struct flow
*flow
, struct flow
*base
,
1916 struct ofpbuf
*odp_actions
)
1918 if (base
->skb_priority
== flow
->skb_priority
) {
1921 base
->skb_priority
= flow
->skb_priority
;
1923 commit_set_action(odp_actions
, OVS_KEY_ATTR_PRIORITY
,
1924 &base
->skb_priority
, sizeof(base
->skb_priority
));
1927 /* If any of the flow key data that ODP actions can modify are different in
1928 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
1929 * key from 'base' into 'flow', and then changes 'base' the same way. */
1931 commit_odp_actions(const struct flow
*flow
, struct flow
*base
,
1932 struct ofpbuf
*odp_actions
)
1934 commit_set_tun_id_action(flow
, base
, odp_actions
);
1935 commit_set_ether_addr_action(flow
, base
, odp_actions
);
1936 commit_vlan_action(flow
, base
, odp_actions
);
1937 commit_set_nw_action(flow
, base
, odp_actions
);
1938 commit_set_port_action(flow
, base
, odp_actions
);
1939 commit_set_priority_action(flow
, base
, odp_actions
);