2 * Copyright (c) 2007-2014 Nicira, Inc.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of version 2 of the GNU General Public
6 * License as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
23 #include <linux/uaccess.h>
24 #include <linux/netdevice.h>
25 #include <linux/etherdevice.h>
26 #include <linux/if_ether.h>
27 #include <linux/if_vlan.h>
28 #include <net/llc_pdu.h>
29 #include <linux/kernel.h>
30 #include <linux/jhash.h>
31 #include <linux/jiffies.h>
32 #include <linux/llc.h>
33 #include <linux/module.h>
35 #include <linux/rcupdate.h>
36 #include <linux/if_arp.h>
38 #include <linux/ipv6.h>
39 #include <linux/sctp.h>
40 #include <linux/tcp.h>
41 #include <linux/udp.h>
42 #include <linux/icmp.h>
43 #include <linux/icmpv6.h>
44 #include <linux/rculist.h>
45 #include <net/geneve.h>
48 #include <net/ndisc.h>
50 #include <net/vxlan.h>
52 #include "flow_netlink.h"
56 const struct ovs_len_tbl
*next
;
59 #define OVS_ATTR_NESTED -1
60 #define OVS_ATTR_VARIABLE -2
62 static void update_range(struct sw_flow_match
*match
,
63 size_t offset
, size_t size
, bool is_mask
)
65 struct sw_flow_key_range
*range
;
66 size_t start
= rounddown(offset
, sizeof(long));
67 size_t end
= roundup(offset
+ size
, sizeof(long));
70 range
= &match
->range
;
72 range
= &match
->mask
->range
;
74 if (range
->start
== range
->end
) {
80 if (range
->start
> start
)
87 #define SW_FLOW_KEY_PUT(match, field, value, is_mask) \
89 update_range(match, offsetof(struct sw_flow_key, field), \
90 sizeof((match)->key->field), is_mask); \
92 (match)->mask->key.field = value; \
94 (match)->key->field = value; \
97 #define SW_FLOW_KEY_MEMCPY_OFFSET(match, offset, value_p, len, is_mask) \
99 update_range(match, offset, len, is_mask); \
101 memcpy((u8 *)&(match)->mask->key + offset, value_p, \
104 memcpy((u8 *)(match)->key + offset, value_p, len); \
107 #define SW_FLOW_KEY_MEMCPY(match, field, value_p, len, is_mask) \
108 SW_FLOW_KEY_MEMCPY_OFFSET(match, offsetof(struct sw_flow_key, field), \
109 value_p, len, is_mask)
111 #define SW_FLOW_KEY_MEMSET_FIELD(match, field, value, is_mask) \
113 update_range(match, offsetof(struct sw_flow_key, field), \
114 sizeof((match)->key->field), is_mask); \
116 memset((u8 *)&(match)->mask->key.field, value, \
117 sizeof((match)->mask->key.field)); \
119 memset((u8 *)&(match)->key->field, value, \
120 sizeof((match)->key->field)); \
123 static bool match_validate(const struct sw_flow_match
*match
,
124 u64 key_attrs
, u64 mask_attrs
, bool log
)
126 u64 key_expected
= 0;
127 u64 mask_allowed
= key_attrs
; /* At most allow all key attributes */
129 /* The following mask attributes allowed only if they
130 * pass the validation tests. */
131 mask_allowed
&= ~((1 << OVS_KEY_ATTR_IPV4
)
132 | (1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4
)
133 | (1 << OVS_KEY_ATTR_IPV6
)
134 | (1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6
)
135 | (1 << OVS_KEY_ATTR_TCP
)
136 | (1 << OVS_KEY_ATTR_TCP_FLAGS
)
137 | (1 << OVS_KEY_ATTR_UDP
)
138 | (1 << OVS_KEY_ATTR_SCTP
)
139 | (1 << OVS_KEY_ATTR_ICMP
)
140 | (1 << OVS_KEY_ATTR_ICMPV6
)
141 | (1 << OVS_KEY_ATTR_ARP
)
142 | (1 << OVS_KEY_ATTR_ND
)
143 | (1 << OVS_KEY_ATTR_MPLS
));
145 /* Always allowed mask fields. */
146 mask_allowed
|= ((1 << OVS_KEY_ATTR_TUNNEL
)
147 | (1 << OVS_KEY_ATTR_IN_PORT
)
148 | (1 << OVS_KEY_ATTR_ETHERTYPE
));
150 /* Check key attributes. */
151 if (match
->key
->eth
.type
== htons(ETH_P_ARP
)
152 || match
->key
->eth
.type
== htons(ETH_P_RARP
)) {
153 key_expected
|= 1 << OVS_KEY_ATTR_ARP
;
154 if (match
->mask
&& (match
->mask
->key
.eth
.type
== htons(0xffff)))
155 mask_allowed
|= 1 << OVS_KEY_ATTR_ARP
;
158 if (eth_p_mpls(match
->key
->eth
.type
)) {
159 key_expected
|= 1 << OVS_KEY_ATTR_MPLS
;
160 if (match
->mask
&& (match
->mask
->key
.eth
.type
== htons(0xffff)))
161 mask_allowed
|= 1 << OVS_KEY_ATTR_MPLS
;
164 if (match
->key
->eth
.type
== htons(ETH_P_IP
)) {
165 key_expected
|= 1 << OVS_KEY_ATTR_IPV4
;
166 if (match
->mask
&& match
->mask
->key
.eth
.type
== htons(0xffff)) {
167 mask_allowed
|= 1 << OVS_KEY_ATTR_IPV4
;
168 mask_allowed
|= 1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4
;
171 if (match
->key
->ip
.frag
!= OVS_FRAG_TYPE_LATER
) {
172 if (match
->key
->ip
.proto
== IPPROTO_UDP
) {
173 key_expected
|= 1 << OVS_KEY_ATTR_UDP
;
174 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff))
175 mask_allowed
|= 1 << OVS_KEY_ATTR_UDP
;
178 if (match
->key
->ip
.proto
== IPPROTO_SCTP
) {
179 key_expected
|= 1 << OVS_KEY_ATTR_SCTP
;
180 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff))
181 mask_allowed
|= 1 << OVS_KEY_ATTR_SCTP
;
184 if (match
->key
->ip
.proto
== IPPROTO_TCP
) {
185 key_expected
|= 1 << OVS_KEY_ATTR_TCP
;
186 key_expected
|= 1 << OVS_KEY_ATTR_TCP_FLAGS
;
187 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff)) {
188 mask_allowed
|= 1 << OVS_KEY_ATTR_TCP
;
189 mask_allowed
|= 1 << OVS_KEY_ATTR_TCP_FLAGS
;
193 if (match
->key
->ip
.proto
== IPPROTO_ICMP
) {
194 key_expected
|= 1 << OVS_KEY_ATTR_ICMP
;
195 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff))
196 mask_allowed
|= 1 << OVS_KEY_ATTR_ICMP
;
201 if (match
->key
->eth
.type
== htons(ETH_P_IPV6
)) {
202 key_expected
|= 1 << OVS_KEY_ATTR_IPV6
;
203 if (match
->mask
&& match
->mask
->key
.eth
.type
== htons(0xffff)) {
204 mask_allowed
|= 1 << OVS_KEY_ATTR_IPV6
;
205 mask_allowed
|= 1 << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6
;
208 if (match
->key
->ip
.frag
!= OVS_FRAG_TYPE_LATER
) {
209 if (match
->key
->ip
.proto
== IPPROTO_UDP
) {
210 key_expected
|= 1 << OVS_KEY_ATTR_UDP
;
211 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff))
212 mask_allowed
|= 1 << OVS_KEY_ATTR_UDP
;
215 if (match
->key
->ip
.proto
== IPPROTO_SCTP
) {
216 key_expected
|= 1 << OVS_KEY_ATTR_SCTP
;
217 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff))
218 mask_allowed
|= 1 << OVS_KEY_ATTR_SCTP
;
221 if (match
->key
->ip
.proto
== IPPROTO_TCP
) {
222 key_expected
|= 1 << OVS_KEY_ATTR_TCP
;
223 key_expected
|= 1 << OVS_KEY_ATTR_TCP_FLAGS
;
224 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff)) {
225 mask_allowed
|= 1 << OVS_KEY_ATTR_TCP
;
226 mask_allowed
|= 1 << OVS_KEY_ATTR_TCP_FLAGS
;
230 if (match
->key
->ip
.proto
== IPPROTO_ICMPV6
) {
231 key_expected
|= 1 << OVS_KEY_ATTR_ICMPV6
;
232 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff))
233 mask_allowed
|= 1 << OVS_KEY_ATTR_ICMPV6
;
235 if (match
->key
->tp
.src
==
236 htons(NDISC_NEIGHBOUR_SOLICITATION
) ||
237 match
->key
->tp
.src
== htons(NDISC_NEIGHBOUR_ADVERTISEMENT
)) {
238 key_expected
|= 1 << OVS_KEY_ATTR_ND
;
239 /* Original direction conntrack tuple
240 * uses the same space as the ND fields
241 * in the key, so both are not allowed
244 mask_allowed
&= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6
);
245 if (match
->mask
&& (match
->mask
->key
.tp
.src
== htons(0xff)))
246 mask_allowed
|= 1 << OVS_KEY_ATTR_ND
;
252 if ((key_attrs
& key_expected
) != key_expected
) {
253 /* Key attributes check failed. */
254 OVS_NLERR(log
, "Missing key (keys=%llx, expected=%llx)",
255 (unsigned long long)key_attrs
,
256 (unsigned long long)key_expected
);
260 if ((mask_attrs
& mask_allowed
) != mask_attrs
) {
261 /* Mask attributes check failed. */
262 OVS_NLERR(log
, "Unexpected mask (mask=%llx, allowed=%llx)",
263 (unsigned long long)mask_attrs
,
264 (unsigned long long)mask_allowed
);
271 size_t ovs_tun_key_attr_size(void)
273 /* Whenever adding new OVS_TUNNEL_KEY_ FIELDS, we should consider
274 * updating this function.
276 return nla_total_size_64bit(8) /* OVS_TUNNEL_KEY_ATTR_ID */
277 + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_SRC */
278 + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_DST */
279 + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TOS */
280 + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TTL */
281 + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT */
282 + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_CSUM */
283 + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_OAM */
284 + nla_total_size(256) /* OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS */
285 /* OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS is mutually exclusive with
286 * OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS and covered by it.
288 + nla_total_size(2) /* OVS_TUNNEL_KEY_ATTR_TP_SRC */
289 + nla_total_size(2); /* OVS_TUNNEL_KEY_ATTR_TP_DST */
292 size_t ovs_key_attr_size(void)
294 /* Whenever adding new OVS_KEY_ FIELDS, we should consider
295 * updating this function.
297 BUILD_BUG_ON(OVS_KEY_ATTR_TUNNEL_INFO
!= 28);
299 return nla_total_size(4) /* OVS_KEY_ATTR_PRIORITY */
300 + nla_total_size(0) /* OVS_KEY_ATTR_TUNNEL */
301 + ovs_tun_key_attr_size()
302 + nla_total_size(4) /* OVS_KEY_ATTR_IN_PORT */
303 + nla_total_size(4) /* OVS_KEY_ATTR_SKB_MARK */
304 + nla_total_size(4) /* OVS_KEY_ATTR_DP_HASH */
305 + nla_total_size(4) /* OVS_KEY_ATTR_RECIRC_ID */
306 + nla_total_size(4) /* OVS_KEY_ATTR_CT_STATE */
307 + nla_total_size(2) /* OVS_KEY_ATTR_CT_ZONE */
308 + nla_total_size(4) /* OVS_KEY_ATTR_CT_MARK */
309 + nla_total_size(16) /* OVS_KEY_ATTR_CT_LABELS */
310 + nla_total_size(40) /* OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6 */
311 + nla_total_size(12) /* OVS_KEY_ATTR_ETHERNET */
312 + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */
313 + nla_total_size(4) /* OVS_KEY_ATTR_VLAN */
314 + nla_total_size(0) /* OVS_KEY_ATTR_ENCAP */
315 + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */
316 + nla_total_size(40) /* OVS_KEY_ATTR_IPV6 */
317 + nla_total_size(2) /* OVS_KEY_ATTR_ICMPV6 */
318 + nla_total_size(28); /* OVS_KEY_ATTR_ND */
321 static const struct ovs_len_tbl ovs_vxlan_ext_key_lens
[OVS_VXLAN_EXT_MAX
+ 1] = {
322 [OVS_VXLAN_EXT_GBP
] = { .len
= sizeof(u32
) },
325 static const struct ovs_len_tbl ovs_tunnel_key_lens
[OVS_TUNNEL_KEY_ATTR_MAX
+ 1] = {
326 [OVS_TUNNEL_KEY_ATTR_ID
] = { .len
= sizeof(u64
) },
327 [OVS_TUNNEL_KEY_ATTR_IPV4_SRC
] = { .len
= sizeof(u32
) },
328 [OVS_TUNNEL_KEY_ATTR_IPV4_DST
] = { .len
= sizeof(u32
) },
329 [OVS_TUNNEL_KEY_ATTR_TOS
] = { .len
= 1 },
330 [OVS_TUNNEL_KEY_ATTR_TTL
] = { .len
= 1 },
331 [OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT
] = { .len
= 0 },
332 [OVS_TUNNEL_KEY_ATTR_CSUM
] = { .len
= 0 },
333 [OVS_TUNNEL_KEY_ATTR_TP_SRC
] = { .len
= sizeof(u16
) },
334 [OVS_TUNNEL_KEY_ATTR_TP_DST
] = { .len
= sizeof(u16
) },
335 [OVS_TUNNEL_KEY_ATTR_OAM
] = { .len
= 0 },
336 [OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS
] = { .len
= OVS_ATTR_VARIABLE
},
337 [OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS
] = { .len
= OVS_ATTR_NESTED
,
338 .next
= ovs_vxlan_ext_key_lens
},
339 [OVS_TUNNEL_KEY_ATTR_IPV6_SRC
] = { .len
= sizeof(struct in6_addr
) },
340 [OVS_TUNNEL_KEY_ATTR_IPV6_DST
] = { .len
= sizeof(struct in6_addr
) },
343 /* The size of the argument for each %OVS_KEY_ATTR_* Netlink attribute. */
344 static const struct ovs_len_tbl ovs_key_lens
[OVS_KEY_ATTR_MAX
+ 1] = {
345 [OVS_KEY_ATTR_ENCAP
] = { .len
= OVS_ATTR_NESTED
},
346 [OVS_KEY_ATTR_PRIORITY
] = { .len
= sizeof(u32
) },
347 [OVS_KEY_ATTR_IN_PORT
] = { .len
= sizeof(u32
) },
348 [OVS_KEY_ATTR_SKB_MARK
] = { .len
= sizeof(u32
) },
349 [OVS_KEY_ATTR_ETHERNET
] = { .len
= sizeof(struct ovs_key_ethernet
) },
350 [OVS_KEY_ATTR_VLAN
] = { .len
= sizeof(__be16
) },
351 [OVS_KEY_ATTR_ETHERTYPE
] = { .len
= sizeof(__be16
) },
352 [OVS_KEY_ATTR_IPV4
] = { .len
= sizeof(struct ovs_key_ipv4
) },
353 [OVS_KEY_ATTR_IPV6
] = { .len
= sizeof(struct ovs_key_ipv6
) },
354 [OVS_KEY_ATTR_TCP
] = { .len
= sizeof(struct ovs_key_tcp
) },
355 [OVS_KEY_ATTR_TCP_FLAGS
] = { .len
= sizeof(__be16
) },
356 [OVS_KEY_ATTR_UDP
] = { .len
= sizeof(struct ovs_key_udp
) },
357 [OVS_KEY_ATTR_SCTP
] = { .len
= sizeof(struct ovs_key_sctp
) },
358 [OVS_KEY_ATTR_ICMP
] = { .len
= sizeof(struct ovs_key_icmp
) },
359 [OVS_KEY_ATTR_ICMPV6
] = { .len
= sizeof(struct ovs_key_icmpv6
) },
360 [OVS_KEY_ATTR_ARP
] = { .len
= sizeof(struct ovs_key_arp
) },
361 [OVS_KEY_ATTR_ND
] = { .len
= sizeof(struct ovs_key_nd
) },
362 [OVS_KEY_ATTR_RECIRC_ID
] = { .len
= sizeof(u32
) },
363 [OVS_KEY_ATTR_DP_HASH
] = { .len
= sizeof(u32
) },
364 [OVS_KEY_ATTR_TUNNEL
] = { .len
= OVS_ATTR_NESTED
,
365 .next
= ovs_tunnel_key_lens
, },
366 [OVS_KEY_ATTR_MPLS
] = { .len
= sizeof(struct ovs_key_mpls
) },
367 [OVS_KEY_ATTR_CT_STATE
] = { .len
= sizeof(u32
) },
368 [OVS_KEY_ATTR_CT_ZONE
] = { .len
= sizeof(u16
) },
369 [OVS_KEY_ATTR_CT_MARK
] = { .len
= sizeof(u32
) },
370 [OVS_KEY_ATTR_CT_LABELS
] = { .len
= sizeof(struct ovs_key_ct_labels
) },
371 [OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4
] = {
372 .len
= sizeof(struct ovs_key_ct_tuple_ipv4
) },
373 [OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6
] = {
374 .len
= sizeof(struct ovs_key_ct_tuple_ipv6
) },
377 static bool check_attr_len(unsigned int attr_len
, unsigned int expected_len
)
379 return expected_len
== attr_len
||
380 expected_len
== OVS_ATTR_NESTED
||
381 expected_len
== OVS_ATTR_VARIABLE
;
384 static bool is_all_zero(const u8
*fp
, size_t size
)
391 for (i
= 0; i
< size
; i
++)
398 static int __parse_flow_nlattrs(const struct nlattr
*attr
,
399 const struct nlattr
*a
[],
400 u64
*attrsp
, bool log
, bool nz
)
402 const struct nlattr
*nla
;
407 nla_for_each_nested(nla
, attr
, rem
) {
408 u16 type
= nla_type(nla
);
411 if (type
> OVS_KEY_ATTR_MAX
) {
412 OVS_NLERR(log
, "Key type %d is out of range max %d",
413 type
, OVS_KEY_ATTR_MAX
);
417 if (attrs
& (1 << type
)) {
418 OVS_NLERR(log
, "Duplicate key (type %d).", type
);
422 expected_len
= ovs_key_lens
[type
].len
;
423 if (!check_attr_len(nla_len(nla
), expected_len
)) {
424 OVS_NLERR(log
, "Key %d has unexpected len %d expected %d",
425 type
, nla_len(nla
), expected_len
);
429 if (!nz
|| !is_all_zero(nla_data(nla
), expected_len
)) {
435 OVS_NLERR(log
, "Message has %d unknown bytes.", rem
);
443 static int parse_flow_mask_nlattrs(const struct nlattr
*attr
,
444 const struct nlattr
*a
[], u64
*attrsp
,
447 return __parse_flow_nlattrs(attr
, a
, attrsp
, log
, true);
450 int parse_flow_nlattrs(const struct nlattr
*attr
, const struct nlattr
*a
[],
451 u64
*attrsp
, bool log
)
453 return __parse_flow_nlattrs(attr
, a
, attrsp
, log
, false);
456 static int genev_tun_opt_from_nlattr(const struct nlattr
*a
,
457 struct sw_flow_match
*match
, bool is_mask
,
460 unsigned long opt_key_offset
;
462 if (nla_len(a
) > sizeof(match
->key
->tun_opts
)) {
463 OVS_NLERR(log
, "Geneve option length err (len %d, max %zu).",
464 nla_len(a
), sizeof(match
->key
->tun_opts
));
468 if (nla_len(a
) % 4 != 0) {
469 OVS_NLERR(log
, "Geneve opt len %d is not a multiple of 4.",
474 /* We need to record the length of the options passed
475 * down, otherwise packets with the same format but
476 * additional options will be silently matched.
479 SW_FLOW_KEY_PUT(match
, tun_opts_len
, nla_len(a
),
482 /* This is somewhat unusual because it looks at
483 * both the key and mask while parsing the
484 * attributes (and by extension assumes the key
485 * is parsed first). Normally, we would verify
486 * that each is the correct length and that the
487 * attributes line up in the validate function.
488 * However, that is difficult because this is
489 * variable length and we won't have the
492 if (match
->key
->tun_opts_len
!= nla_len(a
)) {
493 OVS_NLERR(log
, "Geneve option len %d != mask len %d",
494 match
->key
->tun_opts_len
, nla_len(a
));
498 SW_FLOW_KEY_PUT(match
, tun_opts_len
, 0xff, true);
501 opt_key_offset
= TUN_METADATA_OFFSET(nla_len(a
));
502 SW_FLOW_KEY_MEMCPY_OFFSET(match
, opt_key_offset
, nla_data(a
),
503 nla_len(a
), is_mask
);
507 static int vxlan_tun_opt_from_nlattr(const struct nlattr
*attr
,
508 struct sw_flow_match
*match
, bool is_mask
,
513 unsigned long opt_key_offset
;
514 struct vxlan_metadata opts
;
516 BUILD_BUG_ON(sizeof(opts
) > sizeof(match
->key
->tun_opts
));
518 memset(&opts
, 0, sizeof(opts
));
519 nla_for_each_nested(a
, attr
, rem
) {
520 int type
= nla_type(a
);
522 if (type
> OVS_VXLAN_EXT_MAX
) {
523 OVS_NLERR(log
, "VXLAN extension %d out of range max %d",
524 type
, OVS_VXLAN_EXT_MAX
);
528 if (!check_attr_len(nla_len(a
),
529 ovs_vxlan_ext_key_lens
[type
].len
)) {
530 OVS_NLERR(log
, "VXLAN extension %d has unexpected len %d expected %d",
532 ovs_vxlan_ext_key_lens
[type
].len
);
537 case OVS_VXLAN_EXT_GBP
:
538 opts
.gbp
= nla_get_u32(a
);
541 OVS_NLERR(log
, "Unknown VXLAN extension attribute %d",
547 OVS_NLERR(log
, "VXLAN extension message has %d unknown bytes.",
553 SW_FLOW_KEY_PUT(match
, tun_opts_len
, sizeof(opts
), false);
555 SW_FLOW_KEY_PUT(match
, tun_opts_len
, 0xff, true);
557 opt_key_offset
= TUN_METADATA_OFFSET(sizeof(opts
));
558 SW_FLOW_KEY_MEMCPY_OFFSET(match
, opt_key_offset
, &opts
, sizeof(opts
),
563 static int ip_tun_from_nlattr(const struct nlattr
*attr
,
564 struct sw_flow_match
*match
, bool is_mask
,
567 bool ttl
= false, ipv4
= false, ipv6
= false;
568 __be16 tun_flags
= 0;
573 nla_for_each_nested(a
, attr
, rem
) {
574 int type
= nla_type(a
);
577 if (type
> OVS_TUNNEL_KEY_ATTR_MAX
) {
578 OVS_NLERR(log
, "Tunnel attr %d out of range max %d",
579 type
, OVS_TUNNEL_KEY_ATTR_MAX
);
583 if (!check_attr_len(nla_len(a
),
584 ovs_tunnel_key_lens
[type
].len
)) {
585 OVS_NLERR(log
, "Tunnel attr %d has unexpected len %d expected %d",
586 type
, nla_len(a
), ovs_tunnel_key_lens
[type
].len
);
591 case OVS_TUNNEL_KEY_ATTR_ID
:
592 SW_FLOW_KEY_PUT(match
, tun_key
.tun_id
,
593 nla_get_be64(a
), is_mask
);
594 tun_flags
|= TUNNEL_KEY
;
596 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC
:
597 SW_FLOW_KEY_PUT(match
, tun_key
.u
.ipv4
.src
,
598 nla_get_in_addr(a
), is_mask
);
601 case OVS_TUNNEL_KEY_ATTR_IPV4_DST
:
602 SW_FLOW_KEY_PUT(match
, tun_key
.u
.ipv4
.dst
,
603 nla_get_in_addr(a
), is_mask
);
606 case OVS_TUNNEL_KEY_ATTR_IPV6_SRC
:
607 SW_FLOW_KEY_PUT(match
, tun_key
.u
.ipv6
.dst
,
608 nla_get_in6_addr(a
), is_mask
);
611 case OVS_TUNNEL_KEY_ATTR_IPV6_DST
:
612 SW_FLOW_KEY_PUT(match
, tun_key
.u
.ipv6
.dst
,
613 nla_get_in6_addr(a
), is_mask
);
616 case OVS_TUNNEL_KEY_ATTR_TOS
:
617 SW_FLOW_KEY_PUT(match
, tun_key
.tos
,
618 nla_get_u8(a
), is_mask
);
620 case OVS_TUNNEL_KEY_ATTR_TTL
:
621 SW_FLOW_KEY_PUT(match
, tun_key
.ttl
,
622 nla_get_u8(a
), is_mask
);
625 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT
:
626 tun_flags
|= TUNNEL_DONT_FRAGMENT
;
628 case OVS_TUNNEL_KEY_ATTR_CSUM
:
629 tun_flags
|= TUNNEL_CSUM
;
631 case OVS_TUNNEL_KEY_ATTR_TP_SRC
:
632 SW_FLOW_KEY_PUT(match
, tun_key
.tp_src
,
633 nla_get_be16(a
), is_mask
);
635 case OVS_TUNNEL_KEY_ATTR_TP_DST
:
636 SW_FLOW_KEY_PUT(match
, tun_key
.tp_dst
,
637 nla_get_be16(a
), is_mask
);
639 case OVS_TUNNEL_KEY_ATTR_OAM
:
640 tun_flags
|= TUNNEL_OAM
;
642 case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS
:
644 OVS_NLERR(log
, "Multiple metadata blocks provided");
648 err
= genev_tun_opt_from_nlattr(a
, match
, is_mask
, log
);
652 tun_flags
|= TUNNEL_GENEVE_OPT
;
655 case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS
:
657 OVS_NLERR(log
, "Multiple metadata blocks provided");
661 err
= vxlan_tun_opt_from_nlattr(a
, match
, is_mask
, log
);
665 tun_flags
|= TUNNEL_VXLAN_OPT
;
669 OVS_NLERR(log
, "Unknown IP tunnel attribute %d",
675 SW_FLOW_KEY_PUT(match
, tun_key
.tun_flags
, tun_flags
, is_mask
);
677 SW_FLOW_KEY_MEMSET_FIELD(match
, tun_proto
, 0xff, true);
679 SW_FLOW_KEY_PUT(match
, tun_proto
, ipv6
? AF_INET6
: AF_INET
,
683 OVS_NLERR(log
, "IP tunnel attribute has %d unknown bytes.",
689 OVS_NLERR(log
, "Mixed IPv4 and IPv6 tunnel attributes");
694 if (!ipv4
&& !ipv6
) {
695 OVS_NLERR(log
, "IP tunnel dst address not specified");
698 if (ipv4
&& !match
->key
->tun_key
.u
.ipv4
.dst
) {
699 OVS_NLERR(log
, "IPv4 tunnel dst address is zero");
702 if (ipv6
&& ipv6_addr_any(&match
->key
->tun_key
.u
.ipv6
.dst
)) {
703 OVS_NLERR(log
, "IPv6 tunnel dst address is zero");
708 OVS_NLERR(log
, "IP tunnel TTL not specified.");
716 static int vxlan_opt_to_nlattr(struct sk_buff
*skb
,
717 const void *tun_opts
, int swkey_tun_opts_len
)
719 const struct vxlan_metadata
*opts
= tun_opts
;
722 nla
= nla_nest_start(skb
, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS
);
726 if (nla_put_u32(skb
, OVS_VXLAN_EXT_GBP
, opts
->gbp
) < 0)
729 nla_nest_end(skb
, nla
);
733 static int __ip_tun_to_nlattr(struct sk_buff
*skb
,
734 const struct ip_tunnel_key
*output
,
735 const void *tun_opts
, int swkey_tun_opts_len
,
736 unsigned short tun_proto
)
738 if (output
->tun_flags
& TUNNEL_KEY
&&
739 nla_put_be64(skb
, OVS_TUNNEL_KEY_ATTR_ID
, output
->tun_id
,
740 OVS_TUNNEL_KEY_ATTR_PAD
))
744 if (output
->u
.ipv4
.src
&&
745 nla_put_in_addr(skb
, OVS_TUNNEL_KEY_ATTR_IPV4_SRC
,
748 if (output
->u
.ipv4
.dst
&&
749 nla_put_in_addr(skb
, OVS_TUNNEL_KEY_ATTR_IPV4_DST
,
754 if (!ipv6_addr_any(&output
->u
.ipv6
.src
) &&
755 nla_put_in6_addr(skb
, OVS_TUNNEL_KEY_ATTR_IPV6_SRC
,
756 &output
->u
.ipv6
.src
))
758 if (!ipv6_addr_any(&output
->u
.ipv6
.dst
) &&
759 nla_put_in6_addr(skb
, OVS_TUNNEL_KEY_ATTR_IPV6_DST
,
760 &output
->u
.ipv6
.dst
))
765 nla_put_u8(skb
, OVS_TUNNEL_KEY_ATTR_TOS
, output
->tos
))
767 if (nla_put_u8(skb
, OVS_TUNNEL_KEY_ATTR_TTL
, output
->ttl
))
769 if ((output
->tun_flags
& TUNNEL_DONT_FRAGMENT
) &&
770 nla_put_flag(skb
, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT
))
772 if ((output
->tun_flags
& TUNNEL_CSUM
) &&
773 nla_put_flag(skb
, OVS_TUNNEL_KEY_ATTR_CSUM
))
775 if (output
->tp_src
&&
776 nla_put_be16(skb
, OVS_TUNNEL_KEY_ATTR_TP_SRC
, output
->tp_src
))
778 if (output
->tp_dst
&&
779 nla_put_be16(skb
, OVS_TUNNEL_KEY_ATTR_TP_DST
, output
->tp_dst
))
781 if ((output
->tun_flags
& TUNNEL_OAM
) &&
782 nla_put_flag(skb
, OVS_TUNNEL_KEY_ATTR_OAM
))
784 if (swkey_tun_opts_len
) {
785 if (output
->tun_flags
& TUNNEL_GENEVE_OPT
&&
786 nla_put(skb
, OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS
,
787 swkey_tun_opts_len
, tun_opts
))
789 else if (output
->tun_flags
& TUNNEL_VXLAN_OPT
&&
790 vxlan_opt_to_nlattr(skb
, tun_opts
, swkey_tun_opts_len
))
797 static int ip_tun_to_nlattr(struct sk_buff
*skb
,
798 const struct ip_tunnel_key
*output
,
799 const void *tun_opts
, int swkey_tun_opts_len
,
800 unsigned short tun_proto
)
805 nla
= nla_nest_start(skb
, OVS_KEY_ATTR_TUNNEL
);
809 err
= __ip_tun_to_nlattr(skb
, output
, tun_opts
, swkey_tun_opts_len
,
814 nla_nest_end(skb
, nla
);
818 int ovs_nla_put_tunnel_info(struct sk_buff
*skb
,
819 struct ip_tunnel_info
*tun_info
)
821 return __ip_tun_to_nlattr(skb
, &tun_info
->key
,
822 ip_tunnel_info_opts(tun_info
),
823 tun_info
->options_len
,
824 ip_tunnel_info_af(tun_info
));
827 static int encode_vlan_from_nlattrs(struct sw_flow_match
*match
,
828 const struct nlattr
*a
[],
829 bool is_mask
, bool inner
)
834 if (a
[OVS_KEY_ATTR_VLAN
])
835 tci
= nla_get_be16(a
[OVS_KEY_ATTR_VLAN
]);
837 if (a
[OVS_KEY_ATTR_ETHERTYPE
])
838 tpid
= nla_get_be16(a
[OVS_KEY_ATTR_ETHERTYPE
]);
840 if (likely(!inner
)) {
841 SW_FLOW_KEY_PUT(match
, eth
.vlan
.tpid
, tpid
, is_mask
);
842 SW_FLOW_KEY_PUT(match
, eth
.vlan
.tci
, tci
, is_mask
);
844 SW_FLOW_KEY_PUT(match
, eth
.cvlan
.tpid
, tpid
, is_mask
);
845 SW_FLOW_KEY_PUT(match
, eth
.cvlan
.tci
, tci
, is_mask
);
850 static int validate_vlan_from_nlattrs(const struct sw_flow_match
*match
,
851 u64 key_attrs
, bool inner
,
852 const struct nlattr
**a
, bool log
)
856 if (!((key_attrs
& (1 << OVS_KEY_ATTR_ETHERNET
)) &&
857 (key_attrs
& (1 << OVS_KEY_ATTR_ETHERTYPE
)) &&
858 eth_type_vlan(nla_get_be16(a
[OVS_KEY_ATTR_ETHERTYPE
])))) {
863 if (!((key_attrs
& (1 << OVS_KEY_ATTR_VLAN
)) &&
864 (key_attrs
& (1 << OVS_KEY_ATTR_ENCAP
)))) {
865 OVS_NLERR(log
, "Invalid %s frame", (inner
) ? "C-VLAN" : "VLAN");
869 if (a
[OVS_KEY_ATTR_VLAN
])
870 tci
= nla_get_be16(a
[OVS_KEY_ATTR_VLAN
]);
872 if (!(tci
& htons(VLAN_TAG_PRESENT
))) {
874 OVS_NLERR(log
, "%s TCI does not have VLAN_TAG_PRESENT bit set.",
875 (inner
) ? "C-VLAN" : "VLAN");
877 } else if (nla_len(a
[OVS_KEY_ATTR_ENCAP
])) {
878 /* Corner case for truncated VLAN header. */
879 OVS_NLERR(log
, "Truncated %s header has non-zero encap attribute.",
880 (inner
) ? "C-VLAN" : "VLAN");
888 static int validate_vlan_mask_from_nlattrs(const struct sw_flow_match
*match
,
889 u64 key_attrs
, bool inner
,
890 const struct nlattr
**a
, bool log
)
894 bool encap_valid
= !!(match
->key
->eth
.vlan
.tci
&
895 htons(VLAN_TAG_PRESENT
));
896 bool i_encap_valid
= !!(match
->key
->eth
.cvlan
.tci
&
897 htons(VLAN_TAG_PRESENT
));
899 if (!(key_attrs
& (1 << OVS_KEY_ATTR_ENCAP
))) {
904 if ((!inner
&& !encap_valid
) || (inner
&& !i_encap_valid
)) {
905 OVS_NLERR(log
, "Encap mask attribute is set for non-%s frame.",
906 (inner
) ? "C-VLAN" : "VLAN");
910 if (a
[OVS_KEY_ATTR_VLAN
])
911 tci
= nla_get_be16(a
[OVS_KEY_ATTR_VLAN
]);
913 if (a
[OVS_KEY_ATTR_ETHERTYPE
])
914 tpid
= nla_get_be16(a
[OVS_KEY_ATTR_ETHERTYPE
]);
916 if (tpid
!= htons(0xffff)) {
917 OVS_NLERR(log
, "Must have an exact match on %s TPID (mask=%x).",
918 (inner
) ? "C-VLAN" : "VLAN", ntohs(tpid
));
921 if (!(tci
& htons(VLAN_TAG_PRESENT
))) {
922 OVS_NLERR(log
, "%s TCI mask does not have exact match for VLAN_TAG_PRESENT bit.",
923 (inner
) ? "C-VLAN" : "VLAN");
930 static int __parse_vlan_from_nlattrs(struct sw_flow_match
*match
,
931 u64
*key_attrs
, bool inner
,
932 const struct nlattr
**a
, bool is_mask
,
936 const struct nlattr
*encap
;
939 err
= validate_vlan_from_nlattrs(match
, *key_attrs
, inner
,
942 err
= validate_vlan_mask_from_nlattrs(match
, *key_attrs
, inner
,
947 err
= encode_vlan_from_nlattrs(match
, a
, is_mask
, inner
);
951 *key_attrs
&= ~(1 << OVS_KEY_ATTR_ENCAP
);
952 *key_attrs
&= ~(1 << OVS_KEY_ATTR_VLAN
);
953 *key_attrs
&= ~(1 << OVS_KEY_ATTR_ETHERTYPE
);
955 encap
= a
[OVS_KEY_ATTR_ENCAP
];
958 err
= parse_flow_nlattrs(encap
, a
, key_attrs
, log
);
960 err
= parse_flow_mask_nlattrs(encap
, a
, key_attrs
, log
);
965 static int parse_vlan_from_nlattrs(struct sw_flow_match
*match
,
966 u64
*key_attrs
, const struct nlattr
**a
,
967 bool is_mask
, bool log
)
970 bool encap_valid
= false;
972 err
= __parse_vlan_from_nlattrs(match
, key_attrs
, false, a
,
977 encap_valid
= !!(match
->key
->eth
.vlan
.tci
& htons(VLAN_TAG_PRESENT
));
979 err
= __parse_vlan_from_nlattrs(match
, key_attrs
, true, a
,
988 static int parse_eth_type_from_nlattrs(struct sw_flow_match
*match
,
989 u64
*attrs
, const struct nlattr
**a
,
990 bool is_mask
, bool log
)
994 eth_type
= nla_get_be16(a
[OVS_KEY_ATTR_ETHERTYPE
]);
996 /* Always exact match EtherType. */
997 eth_type
= htons(0xffff);
998 } else if (!eth_proto_is_802_3(eth_type
)) {
999 OVS_NLERR(log
, "EtherType %x is less than min %x",
1000 ntohs(eth_type
), ETH_P_802_3_MIN
);
1004 SW_FLOW_KEY_PUT(match
, eth
.type
, eth_type
, is_mask
);
1005 *attrs
&= ~(1 << OVS_KEY_ATTR_ETHERTYPE
);
1009 static int metadata_from_nlattrs(struct net
*net
, struct sw_flow_match
*match
,
1010 u64
*attrs
, const struct nlattr
**a
,
1011 bool is_mask
, bool log
)
1013 u8 mac_proto
= MAC_PROTO_ETHERNET
;
1015 if (*attrs
& (1 << OVS_KEY_ATTR_DP_HASH
)) {
1016 u32 hash_val
= nla_get_u32(a
[OVS_KEY_ATTR_DP_HASH
]);
1018 SW_FLOW_KEY_PUT(match
, ovs_flow_hash
, hash_val
, is_mask
);
1019 *attrs
&= ~(1 << OVS_KEY_ATTR_DP_HASH
);
1022 if (*attrs
& (1 << OVS_KEY_ATTR_RECIRC_ID
)) {
1023 u32 recirc_id
= nla_get_u32(a
[OVS_KEY_ATTR_RECIRC_ID
]);
1025 SW_FLOW_KEY_PUT(match
, recirc_id
, recirc_id
, is_mask
);
1026 *attrs
&= ~(1 << OVS_KEY_ATTR_RECIRC_ID
);
1029 if (*attrs
& (1 << OVS_KEY_ATTR_PRIORITY
)) {
1030 SW_FLOW_KEY_PUT(match
, phy
.priority
,
1031 nla_get_u32(a
[OVS_KEY_ATTR_PRIORITY
]), is_mask
);
1032 *attrs
&= ~(1 << OVS_KEY_ATTR_PRIORITY
);
1035 if (*attrs
& (1 << OVS_KEY_ATTR_IN_PORT
)) {
1036 u32 in_port
= nla_get_u32(a
[OVS_KEY_ATTR_IN_PORT
]);
1039 in_port
= 0xffffffff; /* Always exact match in_port. */
1040 } else if (in_port
>= DP_MAX_PORTS
) {
1041 OVS_NLERR(log
, "Port %d exceeds max allowable %d",
1042 in_port
, DP_MAX_PORTS
);
1046 SW_FLOW_KEY_PUT(match
, phy
.in_port
, in_port
, is_mask
);
1047 *attrs
&= ~(1 << OVS_KEY_ATTR_IN_PORT
);
1048 } else if (!is_mask
) {
1049 SW_FLOW_KEY_PUT(match
, phy
.in_port
, DP_MAX_PORTS
, is_mask
);
1052 if (*attrs
& (1 << OVS_KEY_ATTR_SKB_MARK
)) {
1053 uint32_t mark
= nla_get_u32(a
[OVS_KEY_ATTR_SKB_MARK
]);
1055 SW_FLOW_KEY_PUT(match
, phy
.skb_mark
, mark
, is_mask
);
1056 *attrs
&= ~(1 << OVS_KEY_ATTR_SKB_MARK
);
1058 if (*attrs
& (1 << OVS_KEY_ATTR_TUNNEL
)) {
1059 if (ip_tun_from_nlattr(a
[OVS_KEY_ATTR_TUNNEL
], match
,
1062 *attrs
&= ~(1 << OVS_KEY_ATTR_TUNNEL
);
1065 if (*attrs
& (1 << OVS_KEY_ATTR_CT_STATE
) &&
1066 ovs_ct_verify(net
, OVS_KEY_ATTR_CT_STATE
)) {
1067 u32 ct_state
= nla_get_u32(a
[OVS_KEY_ATTR_CT_STATE
]);
1069 if (ct_state
& ~CT_SUPPORTED_MASK
) {
1070 OVS_NLERR(log
, "ct_state flags %08x unsupported",
1075 SW_FLOW_KEY_PUT(match
, ct_state
, ct_state
, is_mask
);
1076 *attrs
&= ~(1ULL << OVS_KEY_ATTR_CT_STATE
);
1078 if (*attrs
& (1 << OVS_KEY_ATTR_CT_ZONE
) &&
1079 ovs_ct_verify(net
, OVS_KEY_ATTR_CT_ZONE
)) {
1080 u16 ct_zone
= nla_get_u16(a
[OVS_KEY_ATTR_CT_ZONE
]);
1082 SW_FLOW_KEY_PUT(match
, ct_zone
, ct_zone
, is_mask
);
1083 *attrs
&= ~(1ULL << OVS_KEY_ATTR_CT_ZONE
);
1085 if (*attrs
& (1 << OVS_KEY_ATTR_CT_MARK
) &&
1086 ovs_ct_verify(net
, OVS_KEY_ATTR_CT_MARK
)) {
1087 u32 mark
= nla_get_u32(a
[OVS_KEY_ATTR_CT_MARK
]);
1089 SW_FLOW_KEY_PUT(match
, ct
.mark
, mark
, is_mask
);
1090 *attrs
&= ~(1ULL << OVS_KEY_ATTR_CT_MARK
);
1092 if (*attrs
& (1 << OVS_KEY_ATTR_CT_LABELS
) &&
1093 ovs_ct_verify(net
, OVS_KEY_ATTR_CT_LABELS
)) {
1094 const struct ovs_key_ct_labels
*cl
;
1096 cl
= nla_data(a
[OVS_KEY_ATTR_CT_LABELS
]);
1097 SW_FLOW_KEY_MEMCPY(match
, ct
.labels
, cl
->ct_labels
,
1098 sizeof(*cl
), is_mask
);
1099 *attrs
&= ~(1ULL << OVS_KEY_ATTR_CT_LABELS
);
1101 if (*attrs
& (1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4
)) {
1102 const struct ovs_key_ct_tuple_ipv4
*ct
;
1104 ct
= nla_data(a
[OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4
]);
1106 SW_FLOW_KEY_PUT(match
, ipv4
.ct_orig
.src
, ct
->ipv4_src
, is_mask
);
1107 SW_FLOW_KEY_PUT(match
, ipv4
.ct_orig
.dst
, ct
->ipv4_dst
, is_mask
);
1108 SW_FLOW_KEY_PUT(match
, ct
.orig_tp
.src
, ct
->src_port
, is_mask
);
1109 SW_FLOW_KEY_PUT(match
, ct
.orig_tp
.dst
, ct
->dst_port
, is_mask
);
1110 SW_FLOW_KEY_PUT(match
, ct_orig_proto
, ct
->ipv4_proto
, is_mask
);
1111 *attrs
&= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV4
);
1113 if (*attrs
& (1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6
)) {
1114 const struct ovs_key_ct_tuple_ipv6
*ct
;
1116 ct
= nla_data(a
[OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6
]);
1118 SW_FLOW_KEY_MEMCPY(match
, ipv6
.ct_orig
.src
, &ct
->ipv6_src
,
1119 sizeof(match
->key
->ipv6
.ct_orig
.src
),
1121 SW_FLOW_KEY_MEMCPY(match
, ipv6
.ct_orig
.dst
, &ct
->ipv6_dst
,
1122 sizeof(match
->key
->ipv6
.ct_orig
.dst
),
1124 SW_FLOW_KEY_PUT(match
, ct
.orig_tp
.src
, ct
->src_port
, is_mask
);
1125 SW_FLOW_KEY_PUT(match
, ct
.orig_tp
.dst
, ct
->dst_port
, is_mask
);
1126 SW_FLOW_KEY_PUT(match
, ct_orig_proto
, ct
->ipv6_proto
, is_mask
);
1127 *attrs
&= ~(1ULL << OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV6
);
1130 /* For layer 3 packets the Ethernet type is provided
1131 * and treated as metadata but no MAC addresses are provided.
1133 if (!(*attrs
& (1ULL << OVS_KEY_ATTR_ETHERNET
)) &&
1134 (*attrs
& (1ULL << OVS_KEY_ATTR_ETHERTYPE
)))
1135 mac_proto
= MAC_PROTO_NONE
;
1137 /* Always exact match mac_proto */
1138 SW_FLOW_KEY_PUT(match
, mac_proto
, is_mask
? 0xff : mac_proto
, is_mask
);
1140 if (mac_proto
== MAC_PROTO_NONE
)
1141 return parse_eth_type_from_nlattrs(match
, attrs
, a
, is_mask
,
1147 static int ovs_key_from_nlattrs(struct net
*net
, struct sw_flow_match
*match
,
1148 u64 attrs
, const struct nlattr
**a
,
1149 bool is_mask
, bool log
)
1153 err
= metadata_from_nlattrs(net
, match
, &attrs
, a
, is_mask
, log
);
1157 if (attrs
& (1 << OVS_KEY_ATTR_ETHERNET
)) {
1158 const struct ovs_key_ethernet
*eth_key
;
1160 eth_key
= nla_data(a
[OVS_KEY_ATTR_ETHERNET
]);
1161 SW_FLOW_KEY_MEMCPY(match
, eth
.src
,
1162 eth_key
->eth_src
, ETH_ALEN
, is_mask
);
1163 SW_FLOW_KEY_MEMCPY(match
, eth
.dst
,
1164 eth_key
->eth_dst
, ETH_ALEN
, is_mask
);
1165 attrs
&= ~(1 << OVS_KEY_ATTR_ETHERNET
);
1167 if (attrs
& (1 << OVS_KEY_ATTR_VLAN
)) {
1168 /* VLAN attribute is always parsed before getting here since it
1169 * may occur multiple times.
1171 OVS_NLERR(log
, "VLAN attribute unexpected.");
1175 if (attrs
& (1 << OVS_KEY_ATTR_ETHERTYPE
)) {
1176 err
= parse_eth_type_from_nlattrs(match
, &attrs
, a
, is_mask
,
1180 } else if (!is_mask
) {
1181 SW_FLOW_KEY_PUT(match
, eth
.type
, htons(ETH_P_802_2
), is_mask
);
1183 } else if (!match
->key
->eth
.type
) {
1184 OVS_NLERR(log
, "Either Ethernet header or EtherType is required.");
1188 if (attrs
& (1 << OVS_KEY_ATTR_IPV4
)) {
1189 const struct ovs_key_ipv4
*ipv4_key
;
1191 ipv4_key
= nla_data(a
[OVS_KEY_ATTR_IPV4
]);
1192 if (!is_mask
&& ipv4_key
->ipv4_frag
> OVS_FRAG_TYPE_MAX
) {
1193 OVS_NLERR(log
, "IPv4 frag type %d is out of range max %d",
1194 ipv4_key
->ipv4_frag
, OVS_FRAG_TYPE_MAX
);
1197 SW_FLOW_KEY_PUT(match
, ip
.proto
,
1198 ipv4_key
->ipv4_proto
, is_mask
);
1199 SW_FLOW_KEY_PUT(match
, ip
.tos
,
1200 ipv4_key
->ipv4_tos
, is_mask
);
1201 SW_FLOW_KEY_PUT(match
, ip
.ttl
,
1202 ipv4_key
->ipv4_ttl
, is_mask
);
1203 SW_FLOW_KEY_PUT(match
, ip
.frag
,
1204 ipv4_key
->ipv4_frag
, is_mask
);
1205 SW_FLOW_KEY_PUT(match
, ipv4
.addr
.src
,
1206 ipv4_key
->ipv4_src
, is_mask
);
1207 SW_FLOW_KEY_PUT(match
, ipv4
.addr
.dst
,
1208 ipv4_key
->ipv4_dst
, is_mask
);
1209 attrs
&= ~(1 << OVS_KEY_ATTR_IPV4
);
1212 if (attrs
& (1 << OVS_KEY_ATTR_IPV6
)) {
1213 const struct ovs_key_ipv6
*ipv6_key
;
1215 ipv6_key
= nla_data(a
[OVS_KEY_ATTR_IPV6
]);
1216 if (!is_mask
&& ipv6_key
->ipv6_frag
> OVS_FRAG_TYPE_MAX
) {
1217 OVS_NLERR(log
, "IPv6 frag type %d is out of range max %d",
1218 ipv6_key
->ipv6_frag
, OVS_FRAG_TYPE_MAX
);
1222 if (!is_mask
&& ipv6_key
->ipv6_label
& htonl(0xFFF00000)) {
1223 OVS_NLERR(log
, "IPv6 flow label %x is out of range (max=%x).\n",
1224 ntohl(ipv6_key
->ipv6_label
), (1 << 20) - 1);
1228 SW_FLOW_KEY_PUT(match
, ipv6
.label
,
1229 ipv6_key
->ipv6_label
, is_mask
);
1230 SW_FLOW_KEY_PUT(match
, ip
.proto
,
1231 ipv6_key
->ipv6_proto
, is_mask
);
1232 SW_FLOW_KEY_PUT(match
, ip
.tos
,
1233 ipv6_key
->ipv6_tclass
, is_mask
);
1234 SW_FLOW_KEY_PUT(match
, ip
.ttl
,
1235 ipv6_key
->ipv6_hlimit
, is_mask
);
1236 SW_FLOW_KEY_PUT(match
, ip
.frag
,
1237 ipv6_key
->ipv6_frag
, is_mask
);
1238 SW_FLOW_KEY_MEMCPY(match
, ipv6
.addr
.src
,
1240 sizeof(match
->key
->ipv6
.addr
.src
),
1242 SW_FLOW_KEY_MEMCPY(match
, ipv6
.addr
.dst
,
1244 sizeof(match
->key
->ipv6
.addr
.dst
),
1247 attrs
&= ~(1 << OVS_KEY_ATTR_IPV6
);
1250 if (attrs
& (1 << OVS_KEY_ATTR_ARP
)) {
1251 const struct ovs_key_arp
*arp_key
;
1253 arp_key
= nla_data(a
[OVS_KEY_ATTR_ARP
]);
1254 if (!is_mask
&& (arp_key
->arp_op
& htons(0xff00))) {
1255 OVS_NLERR(log
, "Unknown ARP opcode (opcode=%d).",
1260 SW_FLOW_KEY_PUT(match
, ipv4
.addr
.src
,
1261 arp_key
->arp_sip
, is_mask
);
1262 SW_FLOW_KEY_PUT(match
, ipv4
.addr
.dst
,
1263 arp_key
->arp_tip
, is_mask
);
1264 SW_FLOW_KEY_PUT(match
, ip
.proto
,
1265 ntohs(arp_key
->arp_op
), is_mask
);
1266 SW_FLOW_KEY_MEMCPY(match
, ipv4
.arp
.sha
,
1267 arp_key
->arp_sha
, ETH_ALEN
, is_mask
);
1268 SW_FLOW_KEY_MEMCPY(match
, ipv4
.arp
.tha
,
1269 arp_key
->arp_tha
, ETH_ALEN
, is_mask
);
1271 attrs
&= ~(1 << OVS_KEY_ATTR_ARP
);
1274 if (attrs
& (1 << OVS_KEY_ATTR_MPLS
)) {
1275 const struct ovs_key_mpls
*mpls_key
;
1277 mpls_key
= nla_data(a
[OVS_KEY_ATTR_MPLS
]);
1278 SW_FLOW_KEY_PUT(match
, mpls
.top_lse
,
1279 mpls_key
->mpls_lse
, is_mask
);
1281 attrs
&= ~(1 << OVS_KEY_ATTR_MPLS
);
1284 if (attrs
& (1 << OVS_KEY_ATTR_TCP
)) {
1285 const struct ovs_key_tcp
*tcp_key
;
1287 tcp_key
= nla_data(a
[OVS_KEY_ATTR_TCP
]);
1288 SW_FLOW_KEY_PUT(match
, tp
.src
, tcp_key
->tcp_src
, is_mask
);
1289 SW_FLOW_KEY_PUT(match
, tp
.dst
, tcp_key
->tcp_dst
, is_mask
);
1290 attrs
&= ~(1 << OVS_KEY_ATTR_TCP
);
1293 if (attrs
& (1 << OVS_KEY_ATTR_TCP_FLAGS
)) {
1294 SW_FLOW_KEY_PUT(match
, tp
.flags
,
1295 nla_get_be16(a
[OVS_KEY_ATTR_TCP_FLAGS
]),
1297 attrs
&= ~(1 << OVS_KEY_ATTR_TCP_FLAGS
);
1300 if (attrs
& (1 << OVS_KEY_ATTR_UDP
)) {
1301 const struct ovs_key_udp
*udp_key
;
1303 udp_key
= nla_data(a
[OVS_KEY_ATTR_UDP
]);
1304 SW_FLOW_KEY_PUT(match
, tp
.src
, udp_key
->udp_src
, is_mask
);
1305 SW_FLOW_KEY_PUT(match
, tp
.dst
, udp_key
->udp_dst
, is_mask
);
1306 attrs
&= ~(1 << OVS_KEY_ATTR_UDP
);
1309 if (attrs
& (1 << OVS_KEY_ATTR_SCTP
)) {
1310 const struct ovs_key_sctp
*sctp_key
;
1312 sctp_key
= nla_data(a
[OVS_KEY_ATTR_SCTP
]);
1313 SW_FLOW_KEY_PUT(match
, tp
.src
, sctp_key
->sctp_src
, is_mask
);
1314 SW_FLOW_KEY_PUT(match
, tp
.dst
, sctp_key
->sctp_dst
, is_mask
);
1315 attrs
&= ~(1 << OVS_KEY_ATTR_SCTP
);
1318 if (attrs
& (1 << OVS_KEY_ATTR_ICMP
)) {
1319 const struct ovs_key_icmp
*icmp_key
;
1321 icmp_key
= nla_data(a
[OVS_KEY_ATTR_ICMP
]);
1322 SW_FLOW_KEY_PUT(match
, tp
.src
,
1323 htons(icmp_key
->icmp_type
), is_mask
);
1324 SW_FLOW_KEY_PUT(match
, tp
.dst
,
1325 htons(icmp_key
->icmp_code
), is_mask
);
1326 attrs
&= ~(1 << OVS_KEY_ATTR_ICMP
);
1329 if (attrs
& (1 << OVS_KEY_ATTR_ICMPV6
)) {
1330 const struct ovs_key_icmpv6
*icmpv6_key
;
1332 icmpv6_key
= nla_data(a
[OVS_KEY_ATTR_ICMPV6
]);
1333 SW_FLOW_KEY_PUT(match
, tp
.src
,
1334 htons(icmpv6_key
->icmpv6_type
), is_mask
);
1335 SW_FLOW_KEY_PUT(match
, tp
.dst
,
1336 htons(icmpv6_key
->icmpv6_code
), is_mask
);
1337 attrs
&= ~(1 << OVS_KEY_ATTR_ICMPV6
);
1340 if (attrs
& (1 << OVS_KEY_ATTR_ND
)) {
1341 const struct ovs_key_nd
*nd_key
;
1343 nd_key
= nla_data(a
[OVS_KEY_ATTR_ND
]);
1344 SW_FLOW_KEY_MEMCPY(match
, ipv6
.nd
.target
,
1346 sizeof(match
->key
->ipv6
.nd
.target
),
1348 SW_FLOW_KEY_MEMCPY(match
, ipv6
.nd
.sll
,
1349 nd_key
->nd_sll
, ETH_ALEN
, is_mask
);
1350 SW_FLOW_KEY_MEMCPY(match
, ipv6
.nd
.tll
,
1351 nd_key
->nd_tll
, ETH_ALEN
, is_mask
);
1352 attrs
&= ~(1 << OVS_KEY_ATTR_ND
);
1356 OVS_NLERR(log
, "Unknown key attributes %llx",
1357 (unsigned long long)attrs
);
1364 static void nlattr_set(struct nlattr
*attr
, u8 val
,
1365 const struct ovs_len_tbl
*tbl
)
1370 /* The nlattr stream should already have been validated */
1371 nla_for_each_nested(nla
, attr
, rem
) {
1372 if (tbl
[nla_type(nla
)].len
== OVS_ATTR_NESTED
) {
1373 if (tbl
[nla_type(nla
)].next
)
1374 tbl
= tbl
[nla_type(nla
)].next
;
1375 nlattr_set(nla
, val
, tbl
);
1377 memset(nla_data(nla
), val
, nla_len(nla
));
1380 if (nla_type(nla
) == OVS_KEY_ATTR_CT_STATE
)
1381 *(u32
*)nla_data(nla
) &= CT_SUPPORTED_MASK
;
1385 static void mask_set_nlattr(struct nlattr
*attr
, u8 val
)
1387 nlattr_set(attr
, val
, ovs_key_lens
);
1391 * ovs_nla_get_match - parses Netlink attributes into a flow key and
1392 * mask. In case the 'mask' is NULL, the flow is treated as exact match
1393 * flow. Otherwise, it is treated as a wildcarded flow, except the mask
1394 * does not include any don't care bit.
1395 * @net: Used to determine per-namespace field support.
1396 * @match: receives the extracted flow match information.
1397 * @key: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute
1398 * sequence. The fields should of the packet that triggered the creation
1400 * @mask: Optional. Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink
1401 * attribute specifies the mask field of the wildcarded flow.
1402 * @log: Boolean to allow kernel error logging. Normally true, but when
1403 * probing for feature compatibility this should be passed in as false to
1404 * suppress unnecessary error logging.
1406 int ovs_nla_get_match(struct net
*net
, struct sw_flow_match
*match
,
1407 const struct nlattr
*nla_key
,
1408 const struct nlattr
*nla_mask
,
1411 const struct nlattr
*a
[OVS_KEY_ATTR_MAX
+ 1];
1412 struct nlattr
*newmask
= NULL
;
1417 err
= parse_flow_nlattrs(nla_key
, a
, &key_attrs
, log
);
1421 err
= parse_vlan_from_nlattrs(match
, &key_attrs
, a
, false, log
);
1425 err
= ovs_key_from_nlattrs(net
, match
, key_attrs
, a
, false, log
);
1431 /* Create an exact match mask. We need to set to 0xff
1432 * all the 'match->mask' fields that have been touched
1433 * in 'match->key'. We cannot simply memset
1434 * 'match->mask', because padding bytes and fields not
1435 * specified in 'match->key' should be left to 0.
1436 * Instead, we use a stream of netlink attributes,
1437 * copied from 'key' and set to 0xff.
1438 * ovs_key_from_nlattrs() will take care of filling
1439 * 'match->mask' appropriately.
1441 newmask
= kmemdup(nla_key
,
1442 nla_total_size(nla_len(nla_key
)),
1447 mask_set_nlattr(newmask
, 0xff);
1449 /* The userspace does not send tunnel attributes that
1450 * are 0, but we should not wildcard them nonetheless.
1452 if (match
->key
->tun_proto
)
1453 SW_FLOW_KEY_MEMSET_FIELD(match
, tun_key
,
1459 err
= parse_flow_mask_nlattrs(nla_mask
, a
, &mask_attrs
, log
);
1463 /* Always match on tci. */
1464 SW_FLOW_KEY_PUT(match
, eth
.vlan
.tci
, htons(0xffff), true);
1465 SW_FLOW_KEY_PUT(match
, eth
.cvlan
.tci
, htons(0xffff), true);
1467 err
= parse_vlan_from_nlattrs(match
, &mask_attrs
, a
, true, log
);
1471 err
= ovs_key_from_nlattrs(net
, match
, mask_attrs
, a
, true,
1477 if (!match_validate(match
, key_attrs
, mask_attrs
, log
))
1485 static size_t get_ufid_len(const struct nlattr
*attr
, bool log
)
1492 len
= nla_len(attr
);
1493 if (len
< 1 || len
> MAX_UFID_LENGTH
) {
1494 OVS_NLERR(log
, "ufid size %u bytes exceeds the range (1, %d)",
1495 nla_len(attr
), MAX_UFID_LENGTH
);
1502 /* Initializes 'flow->ufid', returning true if 'attr' contains a valid UFID,
1503 * or false otherwise.
1505 bool ovs_nla_get_ufid(struct sw_flow_id
*sfid
, const struct nlattr
*attr
,
1508 sfid
->ufid_len
= get_ufid_len(attr
, log
);
1510 memcpy(sfid
->ufid
, nla_data(attr
), sfid
->ufid_len
);
1512 return sfid
->ufid_len
;
1515 int ovs_nla_get_identifier(struct sw_flow_id
*sfid
, const struct nlattr
*ufid
,
1516 const struct sw_flow_key
*key
, bool log
)
1518 struct sw_flow_key
*new_key
;
1520 if (ovs_nla_get_ufid(sfid
, ufid
, log
))
1523 /* If UFID was not provided, use unmasked key. */
1524 new_key
= kmalloc(sizeof(*new_key
), GFP_KERNEL
);
1527 memcpy(new_key
, key
, sizeof(*key
));
1528 sfid
->unmasked_key
= new_key
;
1533 u32
ovs_nla_get_ufid_flags(const struct nlattr
*attr
)
1535 return attr
? nla_get_u32(attr
) : 0;
1539 * ovs_nla_get_flow_metadata - parses Netlink attributes into a flow key.
1540 * @net: Network namespace.
1541 * @key: Receives extracted in_port, priority, tun_key, skb_mark and conntrack
1543 * @a: Array of netlink attributes holding parsed %OVS_KEY_ATTR_* Netlink
1545 * @attrs: Bit mask for the netlink attributes included in @a.
1546 * @log: Boolean to allow kernel error logging. Normally true, but when
1547 * probing for feature compatibility this should be passed in as false to
1548 * suppress unnecessary error logging.
1550 * This parses a series of Netlink attributes that form a flow key, which must
1551 * take the same form accepted by flow_from_nlattrs(), but only enough of it to
1552 * get the metadata, that is, the parts of the flow key that cannot be
1553 * extracted from the packet itself.
1555 * This must be called before the packet key fields are filled in 'key'.
1558 int ovs_nla_get_flow_metadata(struct net
*net
,
1559 const struct nlattr
*a
[OVS_KEY_ATTR_MAX
+ 1],
1560 u64 attrs
, struct sw_flow_key
*key
, bool log
)
1562 struct sw_flow_match match
;
1564 memset(&match
, 0, sizeof(match
));
1569 key
->ct_orig_proto
= 0;
1570 memset(&key
->ct
, 0, sizeof(key
->ct
));
1571 memset(&key
->ipv4
.ct_orig
, 0, sizeof(key
->ipv4
.ct_orig
));
1572 memset(&key
->ipv6
.ct_orig
, 0, sizeof(key
->ipv6
.ct_orig
));
1574 key
->phy
.in_port
= DP_MAX_PORTS
;
1576 return metadata_from_nlattrs(net
, &match
, &attrs
, a
, false, log
);
1579 static int ovs_nla_put_vlan(struct sk_buff
*skb
, const struct vlan_head
*vh
,
1582 __be16 eth_type
= !is_mask
? vh
->tpid
: htons(0xffff);
1584 if (nla_put_be16(skb
, OVS_KEY_ATTR_ETHERTYPE
, eth_type
) ||
1585 nla_put_be16(skb
, OVS_KEY_ATTR_VLAN
, vh
->tci
))
1590 static int __ovs_nla_put_key(const struct sw_flow_key
*swkey
,
1591 const struct sw_flow_key
*output
, bool is_mask
,
1592 struct sk_buff
*skb
)
1594 struct ovs_key_ethernet
*eth_key
;
1596 struct nlattr
*encap
= NULL
;
1597 struct nlattr
*in_encap
= NULL
;
1599 if (nla_put_u32(skb
, OVS_KEY_ATTR_RECIRC_ID
, output
->recirc_id
))
1600 goto nla_put_failure
;
1602 if (nla_put_u32(skb
, OVS_KEY_ATTR_DP_HASH
, output
->ovs_flow_hash
))
1603 goto nla_put_failure
;
1605 if (nla_put_u32(skb
, OVS_KEY_ATTR_PRIORITY
, output
->phy
.priority
))
1606 goto nla_put_failure
;
1608 if ((swkey
->tun_proto
|| is_mask
)) {
1609 const void *opts
= NULL
;
1611 if (output
->tun_key
.tun_flags
& TUNNEL_OPTIONS_PRESENT
)
1612 opts
= TUN_METADATA_OPTS(output
, swkey
->tun_opts_len
);
1614 if (ip_tun_to_nlattr(skb
, &output
->tun_key
, opts
,
1615 swkey
->tun_opts_len
, swkey
->tun_proto
))
1616 goto nla_put_failure
;
1619 if (swkey
->phy
.in_port
== DP_MAX_PORTS
) {
1620 if (is_mask
&& (output
->phy
.in_port
== 0xffff))
1621 if (nla_put_u32(skb
, OVS_KEY_ATTR_IN_PORT
, 0xffffffff))
1622 goto nla_put_failure
;
1625 upper_u16
= !is_mask
? 0 : 0xffff;
1627 if (nla_put_u32(skb
, OVS_KEY_ATTR_IN_PORT
,
1628 (upper_u16
<< 16) | output
->phy
.in_port
))
1629 goto nla_put_failure
;
1632 if (nla_put_u32(skb
, OVS_KEY_ATTR_SKB_MARK
, output
->phy
.skb_mark
))
1633 goto nla_put_failure
;
1635 if (ovs_ct_put_key(swkey
, output
, skb
))
1636 goto nla_put_failure
;
1638 if (ovs_key_mac_proto(swkey
) == MAC_PROTO_ETHERNET
) {
1639 nla
= nla_reserve(skb
, OVS_KEY_ATTR_ETHERNET
, sizeof(*eth_key
));
1641 goto nla_put_failure
;
1643 eth_key
= nla_data(nla
);
1644 ether_addr_copy(eth_key
->eth_src
, output
->eth
.src
);
1645 ether_addr_copy(eth_key
->eth_dst
, output
->eth
.dst
);
1647 if (swkey
->eth
.vlan
.tci
|| eth_type_vlan(swkey
->eth
.type
)) {
1648 if (ovs_nla_put_vlan(skb
, &output
->eth
.vlan
, is_mask
))
1649 goto nla_put_failure
;
1650 encap
= nla_nest_start(skb
, OVS_KEY_ATTR_ENCAP
);
1651 if (!swkey
->eth
.vlan
.tci
)
1654 if (swkey
->eth
.cvlan
.tci
|| eth_type_vlan(swkey
->eth
.type
)) {
1655 if (ovs_nla_put_vlan(skb
, &output
->eth
.cvlan
, is_mask
))
1656 goto nla_put_failure
;
1657 in_encap
= nla_nest_start(skb
, OVS_KEY_ATTR_ENCAP
);
1658 if (!swkey
->eth
.cvlan
.tci
)
1663 if (swkey
->eth
.type
== htons(ETH_P_802_2
)) {
1665 * Ethertype 802.2 is represented in the netlink with omitted
1666 * OVS_KEY_ATTR_ETHERTYPE in the flow key attribute, and
1667 * 0xffff in the mask attribute. Ethertype can also
1670 if (is_mask
&& output
->eth
.type
)
1671 if (nla_put_be16(skb
, OVS_KEY_ATTR_ETHERTYPE
,
1673 goto nla_put_failure
;
1678 if (nla_put_be16(skb
, OVS_KEY_ATTR_ETHERTYPE
, output
->eth
.type
))
1679 goto nla_put_failure
;
1681 if (eth_type_vlan(swkey
->eth
.type
)) {
1682 /* There are 3 VLAN tags, we don't know anything about the rest
1683 * of the packet, so truncate here.
1685 WARN_ON_ONCE(!(encap
&& in_encap
));
1689 if (swkey
->eth
.type
== htons(ETH_P_IP
)) {
1690 struct ovs_key_ipv4
*ipv4_key
;
1692 nla
= nla_reserve(skb
, OVS_KEY_ATTR_IPV4
, sizeof(*ipv4_key
));
1694 goto nla_put_failure
;
1695 ipv4_key
= nla_data(nla
);
1696 ipv4_key
->ipv4_src
= output
->ipv4
.addr
.src
;
1697 ipv4_key
->ipv4_dst
= output
->ipv4
.addr
.dst
;
1698 ipv4_key
->ipv4_proto
= output
->ip
.proto
;
1699 ipv4_key
->ipv4_tos
= output
->ip
.tos
;
1700 ipv4_key
->ipv4_ttl
= output
->ip
.ttl
;
1701 ipv4_key
->ipv4_frag
= output
->ip
.frag
;
1702 } else if (swkey
->eth
.type
== htons(ETH_P_IPV6
)) {
1703 struct ovs_key_ipv6
*ipv6_key
;
1705 nla
= nla_reserve(skb
, OVS_KEY_ATTR_IPV6
, sizeof(*ipv6_key
));
1707 goto nla_put_failure
;
1708 ipv6_key
= nla_data(nla
);
1709 memcpy(ipv6_key
->ipv6_src
, &output
->ipv6
.addr
.src
,
1710 sizeof(ipv6_key
->ipv6_src
));
1711 memcpy(ipv6_key
->ipv6_dst
, &output
->ipv6
.addr
.dst
,
1712 sizeof(ipv6_key
->ipv6_dst
));
1713 ipv6_key
->ipv6_label
= output
->ipv6
.label
;
1714 ipv6_key
->ipv6_proto
= output
->ip
.proto
;
1715 ipv6_key
->ipv6_tclass
= output
->ip
.tos
;
1716 ipv6_key
->ipv6_hlimit
= output
->ip
.ttl
;
1717 ipv6_key
->ipv6_frag
= output
->ip
.frag
;
1718 } else if (swkey
->eth
.type
== htons(ETH_P_ARP
) ||
1719 swkey
->eth
.type
== htons(ETH_P_RARP
)) {
1720 struct ovs_key_arp
*arp_key
;
1722 nla
= nla_reserve(skb
, OVS_KEY_ATTR_ARP
, sizeof(*arp_key
));
1724 goto nla_put_failure
;
1725 arp_key
= nla_data(nla
);
1726 memset(arp_key
, 0, sizeof(struct ovs_key_arp
));
1727 arp_key
->arp_sip
= output
->ipv4
.addr
.src
;
1728 arp_key
->arp_tip
= output
->ipv4
.addr
.dst
;
1729 arp_key
->arp_op
= htons(output
->ip
.proto
);
1730 ether_addr_copy(arp_key
->arp_sha
, output
->ipv4
.arp
.sha
);
1731 ether_addr_copy(arp_key
->arp_tha
, output
->ipv4
.arp
.tha
);
1732 } else if (eth_p_mpls(swkey
->eth
.type
)) {
1733 struct ovs_key_mpls
*mpls_key
;
1735 nla
= nla_reserve(skb
, OVS_KEY_ATTR_MPLS
, sizeof(*mpls_key
));
1737 goto nla_put_failure
;
1738 mpls_key
= nla_data(nla
);
1739 mpls_key
->mpls_lse
= output
->mpls
.top_lse
;
1742 if ((swkey
->eth
.type
== htons(ETH_P_IP
) ||
1743 swkey
->eth
.type
== htons(ETH_P_IPV6
)) &&
1744 swkey
->ip
.frag
!= OVS_FRAG_TYPE_LATER
) {
1746 if (swkey
->ip
.proto
== IPPROTO_TCP
) {
1747 struct ovs_key_tcp
*tcp_key
;
1749 nla
= nla_reserve(skb
, OVS_KEY_ATTR_TCP
, sizeof(*tcp_key
));
1751 goto nla_put_failure
;
1752 tcp_key
= nla_data(nla
);
1753 tcp_key
->tcp_src
= output
->tp
.src
;
1754 tcp_key
->tcp_dst
= output
->tp
.dst
;
1755 if (nla_put_be16(skb
, OVS_KEY_ATTR_TCP_FLAGS
,
1757 goto nla_put_failure
;
1758 } else if (swkey
->ip
.proto
== IPPROTO_UDP
) {
1759 struct ovs_key_udp
*udp_key
;
1761 nla
= nla_reserve(skb
, OVS_KEY_ATTR_UDP
, sizeof(*udp_key
));
1763 goto nla_put_failure
;
1764 udp_key
= nla_data(nla
);
1765 udp_key
->udp_src
= output
->tp
.src
;
1766 udp_key
->udp_dst
= output
->tp
.dst
;
1767 } else if (swkey
->ip
.proto
== IPPROTO_SCTP
) {
1768 struct ovs_key_sctp
*sctp_key
;
1770 nla
= nla_reserve(skb
, OVS_KEY_ATTR_SCTP
, sizeof(*sctp_key
));
1772 goto nla_put_failure
;
1773 sctp_key
= nla_data(nla
);
1774 sctp_key
->sctp_src
= output
->tp
.src
;
1775 sctp_key
->sctp_dst
= output
->tp
.dst
;
1776 } else if (swkey
->eth
.type
== htons(ETH_P_IP
) &&
1777 swkey
->ip
.proto
== IPPROTO_ICMP
) {
1778 struct ovs_key_icmp
*icmp_key
;
1780 nla
= nla_reserve(skb
, OVS_KEY_ATTR_ICMP
, sizeof(*icmp_key
));
1782 goto nla_put_failure
;
1783 icmp_key
= nla_data(nla
);
1784 icmp_key
->icmp_type
= ntohs(output
->tp
.src
);
1785 icmp_key
->icmp_code
= ntohs(output
->tp
.dst
);
1786 } else if (swkey
->eth
.type
== htons(ETH_P_IPV6
) &&
1787 swkey
->ip
.proto
== IPPROTO_ICMPV6
) {
1788 struct ovs_key_icmpv6
*icmpv6_key
;
1790 nla
= nla_reserve(skb
, OVS_KEY_ATTR_ICMPV6
,
1791 sizeof(*icmpv6_key
));
1793 goto nla_put_failure
;
1794 icmpv6_key
= nla_data(nla
);
1795 icmpv6_key
->icmpv6_type
= ntohs(output
->tp
.src
);
1796 icmpv6_key
->icmpv6_code
= ntohs(output
->tp
.dst
);
1798 if (icmpv6_key
->icmpv6_type
== NDISC_NEIGHBOUR_SOLICITATION
||
1799 icmpv6_key
->icmpv6_type
== NDISC_NEIGHBOUR_ADVERTISEMENT
) {
1800 struct ovs_key_nd
*nd_key
;
1802 nla
= nla_reserve(skb
, OVS_KEY_ATTR_ND
, sizeof(*nd_key
));
1804 goto nla_put_failure
;
1805 nd_key
= nla_data(nla
);
1806 memcpy(nd_key
->nd_target
, &output
->ipv6
.nd
.target
,
1807 sizeof(nd_key
->nd_target
));
1808 ether_addr_copy(nd_key
->nd_sll
, output
->ipv6
.nd
.sll
);
1809 ether_addr_copy(nd_key
->nd_tll
, output
->ipv6
.nd
.tll
);
1816 nla_nest_end(skb
, in_encap
);
1818 nla_nest_end(skb
, encap
);
1826 int ovs_nla_put_key(const struct sw_flow_key
*swkey
,
1827 const struct sw_flow_key
*output
, int attr
, bool is_mask
,
1828 struct sk_buff
*skb
)
1833 nla
= nla_nest_start(skb
, attr
);
1836 err
= __ovs_nla_put_key(swkey
, output
, is_mask
, skb
);
1839 nla_nest_end(skb
, nla
);
1844 /* Called with ovs_mutex or RCU read lock. */
1845 int ovs_nla_put_identifier(const struct sw_flow
*flow
, struct sk_buff
*skb
)
1847 if (ovs_identifier_is_ufid(&flow
->id
))
1848 return nla_put(skb
, OVS_FLOW_ATTR_UFID
, flow
->id
.ufid_len
,
1851 return ovs_nla_put_key(flow
->id
.unmasked_key
, flow
->id
.unmasked_key
,
1852 OVS_FLOW_ATTR_KEY
, false, skb
);
1855 /* Called with ovs_mutex or RCU read lock. */
1856 int ovs_nla_put_masked_key(const struct sw_flow
*flow
, struct sk_buff
*skb
)
1858 return ovs_nla_put_key(&flow
->key
, &flow
->key
,
1859 OVS_FLOW_ATTR_KEY
, false, skb
);
1862 /* Called with ovs_mutex or RCU read lock. */
1863 int ovs_nla_put_mask(const struct sw_flow
*flow
, struct sk_buff
*skb
)
1865 return ovs_nla_put_key(&flow
->key
, &flow
->mask
->key
,
1866 OVS_FLOW_ATTR_MASK
, true, skb
);
1869 #define MAX_ACTIONS_BUFSIZE (32 * 1024)
1871 static struct sw_flow_actions
*nla_alloc_flow_actions(int size
, bool log
)
1873 struct sw_flow_actions
*sfa
;
1875 if (size
> MAX_ACTIONS_BUFSIZE
) {
1876 OVS_NLERR(log
, "Flow action size %u bytes exceeds max", size
);
1877 return ERR_PTR(-EINVAL
);
1880 sfa
= kmalloc(sizeof(*sfa
) + size
, GFP_KERNEL
);
1882 return ERR_PTR(-ENOMEM
);
1884 sfa
->actions_len
= 0;
1888 static void ovs_nla_free_set_action(const struct nlattr
*a
)
1890 const struct nlattr
*ovs_key
= nla_data(a
);
1891 struct ovs_tunnel_info
*ovs_tun
;
1893 switch (nla_type(ovs_key
)) {
1894 case OVS_KEY_ATTR_TUNNEL_INFO
:
1895 ovs_tun
= nla_data(ovs_key
);
1896 dst_release((struct dst_entry
*)ovs_tun
->tun_dst
);
1901 void ovs_nla_free_flow_actions(struct sw_flow_actions
*sf_acts
)
1903 const struct nlattr
*a
;
1909 nla_for_each_attr(a
, sf_acts
->actions
, sf_acts
->actions_len
, rem
) {
1910 switch (nla_type(a
)) {
1911 case OVS_ACTION_ATTR_SET
:
1912 ovs_nla_free_set_action(a
);
1914 case OVS_ACTION_ATTR_CT
:
1915 ovs_ct_free_action(a
);
1923 static void __ovs_nla_free_flow_actions(struct rcu_head
*head
)
1925 ovs_nla_free_flow_actions(container_of(head
, struct sw_flow_actions
, rcu
));
1928 /* Schedules 'sf_acts' to be freed after the next RCU grace period.
1929 * The caller must hold rcu_read_lock for this to be sensible. */
1930 void ovs_nla_free_flow_actions_rcu(struct sw_flow_actions
*sf_acts
)
1932 call_rcu(&sf_acts
->rcu
, __ovs_nla_free_flow_actions
);
1935 static struct nlattr
*reserve_sfa_size(struct sw_flow_actions
**sfa
,
1936 int attr_len
, bool log
)
1939 struct sw_flow_actions
*acts
;
1941 int req_size
= NLA_ALIGN(attr_len
);
1942 int next_offset
= offsetof(struct sw_flow_actions
, actions
) +
1943 (*sfa
)->actions_len
;
1945 if (req_size
<= (ksize(*sfa
) - next_offset
))
1948 new_acts_size
= ksize(*sfa
) * 2;
1950 if (new_acts_size
> MAX_ACTIONS_BUFSIZE
) {
1951 if ((MAX_ACTIONS_BUFSIZE
- next_offset
) < req_size
)
1952 return ERR_PTR(-EMSGSIZE
);
1953 new_acts_size
= MAX_ACTIONS_BUFSIZE
;
1956 acts
= nla_alloc_flow_actions(new_acts_size
, log
);
1958 return (void *)acts
;
1960 memcpy(acts
->actions
, (*sfa
)->actions
, (*sfa
)->actions_len
);
1961 acts
->actions_len
= (*sfa
)->actions_len
;
1962 acts
->orig_len
= (*sfa
)->orig_len
;
1967 (*sfa
)->actions_len
+= req_size
;
1968 return (struct nlattr
*) ((unsigned char *)(*sfa
) + next_offset
);
1971 static struct nlattr
*__add_action(struct sw_flow_actions
**sfa
,
1972 int attrtype
, void *data
, int len
, bool log
)
1976 a
= reserve_sfa_size(sfa
, nla_attr_size(len
), log
);
1980 a
->nla_type
= attrtype
;
1981 a
->nla_len
= nla_attr_size(len
);
1984 memcpy(nla_data(a
), data
, len
);
1985 memset((unsigned char *) a
+ a
->nla_len
, 0, nla_padlen(len
));
1990 int ovs_nla_add_action(struct sw_flow_actions
**sfa
, int attrtype
, void *data
,
1995 a
= __add_action(sfa
, attrtype
, data
, len
, log
);
1997 return PTR_ERR_OR_ZERO(a
);
2000 static inline int add_nested_action_start(struct sw_flow_actions
**sfa
,
2001 int attrtype
, bool log
)
2003 int used
= (*sfa
)->actions_len
;
2006 err
= ovs_nla_add_action(sfa
, attrtype
, NULL
, 0, log
);
2013 static inline void add_nested_action_end(struct sw_flow_actions
*sfa
,
2016 struct nlattr
*a
= (struct nlattr
*) ((unsigned char *)sfa
->actions
+
2019 a
->nla_len
= sfa
->actions_len
- st_offset
;
2022 static int __ovs_nla_copy_actions(struct net
*net
, const struct nlattr
*attr
,
2023 const struct sw_flow_key
*key
,
2024 int depth
, struct sw_flow_actions
**sfa
,
2025 __be16 eth_type
, __be16 vlan_tci
, bool log
);
2027 static int validate_and_copy_sample(struct net
*net
, const struct nlattr
*attr
,
2028 const struct sw_flow_key
*key
, int depth
,
2029 struct sw_flow_actions
**sfa
,
2030 __be16 eth_type
, __be16 vlan_tci
, bool log
)
2032 const struct nlattr
*attrs
[OVS_SAMPLE_ATTR_MAX
+ 1];
2033 const struct nlattr
*probability
, *actions
;
2034 const struct nlattr
*a
;
2035 int rem
, start
, err
, st_acts
;
2037 memset(attrs
, 0, sizeof(attrs
));
2038 nla_for_each_nested(a
, attr
, rem
) {
2039 int type
= nla_type(a
);
2040 if (!type
|| type
> OVS_SAMPLE_ATTR_MAX
|| attrs
[type
])
2047 probability
= attrs
[OVS_SAMPLE_ATTR_PROBABILITY
];
2048 if (!probability
|| nla_len(probability
) != sizeof(u32
))
2051 actions
= attrs
[OVS_SAMPLE_ATTR_ACTIONS
];
2052 if (!actions
|| (nla_len(actions
) && nla_len(actions
) < NLA_HDRLEN
))
2055 /* validation done, copy sample action. */
2056 start
= add_nested_action_start(sfa
, OVS_ACTION_ATTR_SAMPLE
, log
);
2059 err
= ovs_nla_add_action(sfa
, OVS_SAMPLE_ATTR_PROBABILITY
,
2060 nla_data(probability
), sizeof(u32
), log
);
2063 st_acts
= add_nested_action_start(sfa
, OVS_SAMPLE_ATTR_ACTIONS
, log
);
2067 err
= __ovs_nla_copy_actions(net
, actions
, key
, depth
+ 1, sfa
,
2068 eth_type
, vlan_tci
, log
);
2072 add_nested_action_end(*sfa
, st_acts
);
2073 add_nested_action_end(*sfa
, start
);
2078 void ovs_match_init(struct sw_flow_match
*match
,
2079 struct sw_flow_key
*key
,
2081 struct sw_flow_mask
*mask
)
2083 memset(match
, 0, sizeof(*match
));
2088 memset(key
, 0, sizeof(*key
));
2091 memset(&mask
->key
, 0, sizeof(mask
->key
));
2092 mask
->range
.start
= mask
->range
.end
= 0;
2096 static int validate_geneve_opts(struct sw_flow_key
*key
)
2098 struct geneve_opt
*option
;
2099 int opts_len
= key
->tun_opts_len
;
2100 bool crit_opt
= false;
2102 option
= (struct geneve_opt
*)TUN_METADATA_OPTS(key
, key
->tun_opts_len
);
2103 while (opts_len
> 0) {
2106 if (opts_len
< sizeof(*option
))
2109 len
= sizeof(*option
) + option
->length
* 4;
2113 crit_opt
|= !!(option
->type
& GENEVE_CRIT_OPT_TYPE
);
2115 option
= (struct geneve_opt
*)((u8
*)option
+ len
);
2119 key
->tun_key
.tun_flags
|= crit_opt
? TUNNEL_CRIT_OPT
: 0;
2124 static int validate_and_copy_set_tun(const struct nlattr
*attr
,
2125 struct sw_flow_actions
**sfa
, bool log
)
2127 struct sw_flow_match match
;
2128 struct sw_flow_key key
;
2129 struct metadata_dst
*tun_dst
;
2130 struct ip_tunnel_info
*tun_info
;
2131 struct ovs_tunnel_info
*ovs_tun
;
2133 int err
= 0, start
, opts_type
;
2135 ovs_match_init(&match
, &key
, true, NULL
);
2136 opts_type
= ip_tun_from_nlattr(nla_data(attr
), &match
, false, log
);
2140 if (key
.tun_opts_len
) {
2141 switch (opts_type
) {
2142 case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS
:
2143 err
= validate_geneve_opts(&key
);
2147 case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS
:
2152 start
= add_nested_action_start(sfa
, OVS_ACTION_ATTR_SET
, log
);
2156 tun_dst
= metadata_dst_alloc(key
.tun_opts_len
, GFP_KERNEL
);
2160 err
= dst_cache_init(&tun_dst
->u
.tun_info
.dst_cache
, GFP_KERNEL
);
2162 dst_release((struct dst_entry
*)tun_dst
);
2166 a
= __add_action(sfa
, OVS_KEY_ATTR_TUNNEL_INFO
, NULL
,
2167 sizeof(*ovs_tun
), log
);
2169 dst_release((struct dst_entry
*)tun_dst
);
2173 ovs_tun
= nla_data(a
);
2174 ovs_tun
->tun_dst
= tun_dst
;
2176 tun_info
= &tun_dst
->u
.tun_info
;
2177 tun_info
->mode
= IP_TUNNEL_INFO_TX
;
2178 if (key
.tun_proto
== AF_INET6
)
2179 tun_info
->mode
|= IP_TUNNEL_INFO_IPV6
;
2180 tun_info
->key
= key
.tun_key
;
2182 /* We need to store the options in the action itself since
2183 * everything else will go away after flow setup. We can append
2184 * it to tun_info and then point there.
2186 ip_tunnel_info_opts_set(tun_info
,
2187 TUN_METADATA_OPTS(&key
, key
.tun_opts_len
),
2189 add_nested_action_end(*sfa
, start
);
2194 /* Return false if there are any non-masked bits set.
2195 * Mask follows data immediately, before any netlink padding.
2197 static bool validate_masked(u8
*data
, int len
)
2199 u8
*mask
= data
+ len
;
2202 if (*data
++ & ~*mask
++)
2208 static int validate_set(const struct nlattr
*a
,
2209 const struct sw_flow_key
*flow_key
,
2210 struct sw_flow_actions
**sfa
, bool *skip_copy
,
2211 u8 mac_proto
, __be16 eth_type
, bool masked
, bool log
)
2213 const struct nlattr
*ovs_key
= nla_data(a
);
2214 int key_type
= nla_type(ovs_key
);
2217 /* There can be only one key in a action */
2218 if (nla_total_size(nla_len(ovs_key
)) != nla_len(a
))
2221 key_len
= nla_len(ovs_key
);
2225 if (key_type
> OVS_KEY_ATTR_MAX
||
2226 !check_attr_len(key_len
, ovs_key_lens
[key_type
].len
))
2229 if (masked
&& !validate_masked(nla_data(ovs_key
), key_len
))
2233 const struct ovs_key_ipv4
*ipv4_key
;
2234 const struct ovs_key_ipv6
*ipv6_key
;
2237 case OVS_KEY_ATTR_PRIORITY
:
2238 case OVS_KEY_ATTR_SKB_MARK
:
2239 case OVS_KEY_ATTR_CT_MARK
:
2240 case OVS_KEY_ATTR_CT_LABELS
:
2243 case OVS_KEY_ATTR_ETHERNET
:
2244 if (mac_proto
!= MAC_PROTO_ETHERNET
)
2248 case OVS_KEY_ATTR_TUNNEL
:
2250 return -EINVAL
; /* Masked tunnel set not supported. */
2253 err
= validate_and_copy_set_tun(a
, sfa
, log
);
2258 case OVS_KEY_ATTR_IPV4
:
2259 if (eth_type
!= htons(ETH_P_IP
))
2262 ipv4_key
= nla_data(ovs_key
);
2265 const struct ovs_key_ipv4
*mask
= ipv4_key
+ 1;
2267 /* Non-writeable fields. */
2268 if (mask
->ipv4_proto
|| mask
->ipv4_frag
)
2271 if (ipv4_key
->ipv4_proto
!= flow_key
->ip
.proto
)
2274 if (ipv4_key
->ipv4_frag
!= flow_key
->ip
.frag
)
2279 case OVS_KEY_ATTR_IPV6
:
2280 if (eth_type
!= htons(ETH_P_IPV6
))
2283 ipv6_key
= nla_data(ovs_key
);
2286 const struct ovs_key_ipv6
*mask
= ipv6_key
+ 1;
2288 /* Non-writeable fields. */
2289 if (mask
->ipv6_proto
|| mask
->ipv6_frag
)
2292 /* Invalid bits in the flow label mask? */
2293 if (ntohl(mask
->ipv6_label
) & 0xFFF00000)
2296 if (ipv6_key
->ipv6_proto
!= flow_key
->ip
.proto
)
2299 if (ipv6_key
->ipv6_frag
!= flow_key
->ip
.frag
)
2302 if (ntohl(ipv6_key
->ipv6_label
) & 0xFFF00000)
2307 case OVS_KEY_ATTR_TCP
:
2308 if ((eth_type
!= htons(ETH_P_IP
) &&
2309 eth_type
!= htons(ETH_P_IPV6
)) ||
2310 flow_key
->ip
.proto
!= IPPROTO_TCP
)
2315 case OVS_KEY_ATTR_UDP
:
2316 if ((eth_type
!= htons(ETH_P_IP
) &&
2317 eth_type
!= htons(ETH_P_IPV6
)) ||
2318 flow_key
->ip
.proto
!= IPPROTO_UDP
)
2323 case OVS_KEY_ATTR_MPLS
:
2324 if (!eth_p_mpls(eth_type
))
2328 case OVS_KEY_ATTR_SCTP
:
2329 if ((eth_type
!= htons(ETH_P_IP
) &&
2330 eth_type
!= htons(ETH_P_IPV6
)) ||
2331 flow_key
->ip
.proto
!= IPPROTO_SCTP
)
2340 /* Convert non-masked non-tunnel set actions to masked set actions. */
2341 if (!masked
&& key_type
!= OVS_KEY_ATTR_TUNNEL
) {
2342 int start
, len
= key_len
* 2;
2347 start
= add_nested_action_start(sfa
,
2348 OVS_ACTION_ATTR_SET_TO_MASKED
,
2353 at
= __add_action(sfa
, key_type
, NULL
, len
, log
);
2357 memcpy(nla_data(at
), nla_data(ovs_key
), key_len
); /* Key. */
2358 memset(nla_data(at
) + key_len
, 0xff, key_len
); /* Mask. */
2359 /* Clear non-writeable bits from otherwise writeable fields. */
2360 if (key_type
== OVS_KEY_ATTR_IPV6
) {
2361 struct ovs_key_ipv6
*mask
= nla_data(at
) + key_len
;
2363 mask
->ipv6_label
&= htonl(0x000FFFFF);
2365 add_nested_action_end(*sfa
, start
);
2371 static int validate_userspace(const struct nlattr
*attr
)
2373 static const struct nla_policy userspace_policy
[OVS_USERSPACE_ATTR_MAX
+ 1] = {
2374 [OVS_USERSPACE_ATTR_PID
] = {.type
= NLA_U32
},
2375 [OVS_USERSPACE_ATTR_USERDATA
] = {.type
= NLA_UNSPEC
},
2376 [OVS_USERSPACE_ATTR_EGRESS_TUN_PORT
] = {.type
= NLA_U32
},
2378 struct nlattr
*a
[OVS_USERSPACE_ATTR_MAX
+ 1];
2381 error
= nla_parse_nested(a
, OVS_USERSPACE_ATTR_MAX
,
2382 attr
, userspace_policy
);
2386 if (!a
[OVS_USERSPACE_ATTR_PID
] ||
2387 !nla_get_u32(a
[OVS_USERSPACE_ATTR_PID
]))
2393 static int copy_action(const struct nlattr
*from
,
2394 struct sw_flow_actions
**sfa
, bool log
)
2396 int totlen
= NLA_ALIGN(from
->nla_len
);
2399 to
= reserve_sfa_size(sfa
, from
->nla_len
, log
);
2403 memcpy(to
, from
, totlen
);
2407 static int __ovs_nla_copy_actions(struct net
*net
, const struct nlattr
*attr
,
2408 const struct sw_flow_key
*key
,
2409 int depth
, struct sw_flow_actions
**sfa
,
2410 __be16 eth_type
, __be16 vlan_tci
, bool log
)
2412 u8 mac_proto
= ovs_key_mac_proto(key
);
2413 const struct nlattr
*a
;
2416 if (depth
>= SAMPLE_ACTION_DEPTH
)
2419 nla_for_each_nested(a
, attr
, rem
) {
2420 /* Expected argument lengths, (u32)-1 for variable length. */
2421 static const u32 action_lens
[OVS_ACTION_ATTR_MAX
+ 1] = {
2422 [OVS_ACTION_ATTR_OUTPUT
] = sizeof(u32
),
2423 [OVS_ACTION_ATTR_RECIRC
] = sizeof(u32
),
2424 [OVS_ACTION_ATTR_USERSPACE
] = (u32
)-1,
2425 [OVS_ACTION_ATTR_PUSH_MPLS
] = sizeof(struct ovs_action_push_mpls
),
2426 [OVS_ACTION_ATTR_POP_MPLS
] = sizeof(__be16
),
2427 [OVS_ACTION_ATTR_PUSH_VLAN
] = sizeof(struct ovs_action_push_vlan
),
2428 [OVS_ACTION_ATTR_POP_VLAN
] = 0,
2429 [OVS_ACTION_ATTR_SET
] = (u32
)-1,
2430 [OVS_ACTION_ATTR_SET_MASKED
] = (u32
)-1,
2431 [OVS_ACTION_ATTR_SAMPLE
] = (u32
)-1,
2432 [OVS_ACTION_ATTR_HASH
] = sizeof(struct ovs_action_hash
),
2433 [OVS_ACTION_ATTR_CT
] = (u32
)-1,
2434 [OVS_ACTION_ATTR_TRUNC
] = sizeof(struct ovs_action_trunc
),
2435 [OVS_ACTION_ATTR_PUSH_ETH
] = sizeof(struct ovs_action_push_eth
),
2436 [OVS_ACTION_ATTR_POP_ETH
] = 0,
2438 const struct ovs_action_push_vlan
*vlan
;
2439 int type
= nla_type(a
);
2442 if (type
> OVS_ACTION_ATTR_MAX
||
2443 (action_lens
[type
] != nla_len(a
) &&
2444 action_lens
[type
] != (u32
)-1))
2449 case OVS_ACTION_ATTR_UNSPEC
:
2452 case OVS_ACTION_ATTR_USERSPACE
:
2453 err
= validate_userspace(a
);
2458 case OVS_ACTION_ATTR_OUTPUT
:
2459 if (nla_get_u32(a
) >= DP_MAX_PORTS
)
2463 case OVS_ACTION_ATTR_TRUNC
: {
2464 const struct ovs_action_trunc
*trunc
= nla_data(a
);
2466 if (trunc
->max_len
< ETH_HLEN
)
2471 case OVS_ACTION_ATTR_HASH
: {
2472 const struct ovs_action_hash
*act_hash
= nla_data(a
);
2474 switch (act_hash
->hash_alg
) {
2475 case OVS_HASH_ALG_L4
:
2484 case OVS_ACTION_ATTR_POP_VLAN
:
2485 if (mac_proto
!= MAC_PROTO_ETHERNET
)
2487 vlan_tci
= htons(0);
2490 case OVS_ACTION_ATTR_PUSH_VLAN
:
2491 if (mac_proto
!= MAC_PROTO_ETHERNET
)
2494 if (!eth_type_vlan(vlan
->vlan_tpid
))
2496 if (!(vlan
->vlan_tci
& htons(VLAN_TAG_PRESENT
)))
2498 vlan_tci
= vlan
->vlan_tci
;
2501 case OVS_ACTION_ATTR_RECIRC
:
2504 case OVS_ACTION_ATTR_PUSH_MPLS
: {
2505 const struct ovs_action_push_mpls
*mpls
= nla_data(a
);
2507 if (!eth_p_mpls(mpls
->mpls_ethertype
))
2509 /* Prohibit push MPLS other than to a white list
2510 * for packets that have a known tag order.
2512 if (vlan_tci
& htons(VLAN_TAG_PRESENT
) ||
2513 (eth_type
!= htons(ETH_P_IP
) &&
2514 eth_type
!= htons(ETH_P_IPV6
) &&
2515 eth_type
!= htons(ETH_P_ARP
) &&
2516 eth_type
!= htons(ETH_P_RARP
) &&
2517 !eth_p_mpls(eth_type
)))
2519 eth_type
= mpls
->mpls_ethertype
;
2523 case OVS_ACTION_ATTR_POP_MPLS
:
2524 if (vlan_tci
& htons(VLAN_TAG_PRESENT
) ||
2525 !eth_p_mpls(eth_type
))
2528 /* Disallow subsequent L2.5+ set and mpls_pop actions
2529 * as there is no check here to ensure that the new
2530 * eth_type is valid and thus set actions could
2531 * write off the end of the packet or otherwise
2534 * Support for these actions is planned using packet
2537 eth_type
= htons(0);
2540 case OVS_ACTION_ATTR_SET
:
2541 err
= validate_set(a
, key
, sfa
,
2542 &skip_copy
, mac_proto
, eth_type
,
2548 case OVS_ACTION_ATTR_SET_MASKED
:
2549 err
= validate_set(a
, key
, sfa
,
2550 &skip_copy
, mac_proto
, eth_type
,
2556 case OVS_ACTION_ATTR_SAMPLE
:
2557 err
= validate_and_copy_sample(net
, a
, key
, depth
, sfa
,
2558 eth_type
, vlan_tci
, log
);
2564 case OVS_ACTION_ATTR_CT
:
2565 err
= ovs_ct_copy_action(net
, a
, key
, sfa
, log
);
2571 case OVS_ACTION_ATTR_PUSH_ETH
:
2572 /* Disallow pushing an Ethernet header if one
2573 * is already present */
2574 if (mac_proto
!= MAC_PROTO_NONE
)
2576 mac_proto
= MAC_PROTO_NONE
;
2579 case OVS_ACTION_ATTR_POP_ETH
:
2580 if (mac_proto
!= MAC_PROTO_ETHERNET
)
2582 if (vlan_tci
& htons(VLAN_TAG_PRESENT
))
2584 mac_proto
= MAC_PROTO_ETHERNET
;
2588 OVS_NLERR(log
, "Unknown Action type %d", type
);
2592 err
= copy_action(a
, sfa
, log
);
2604 /* 'key' must be the masked key. */
2605 int ovs_nla_copy_actions(struct net
*net
, const struct nlattr
*attr
,
2606 const struct sw_flow_key
*key
,
2607 struct sw_flow_actions
**sfa
, bool log
)
2611 *sfa
= nla_alloc_flow_actions(nla_len(attr
), log
);
2613 return PTR_ERR(*sfa
);
2615 (*sfa
)->orig_len
= nla_len(attr
);
2616 err
= __ovs_nla_copy_actions(net
, attr
, key
, 0, sfa
, key
->eth
.type
,
2617 key
->eth
.vlan
.tci
, log
);
2619 ovs_nla_free_flow_actions(*sfa
);
2624 static int sample_action_to_attr(const struct nlattr
*attr
, struct sk_buff
*skb
)
2626 const struct nlattr
*a
;
2627 struct nlattr
*start
;
2630 start
= nla_nest_start(skb
, OVS_ACTION_ATTR_SAMPLE
);
2634 nla_for_each_nested(a
, attr
, rem
) {
2635 int type
= nla_type(a
);
2636 struct nlattr
*st_sample
;
2639 case OVS_SAMPLE_ATTR_PROBABILITY
:
2640 if (nla_put(skb
, OVS_SAMPLE_ATTR_PROBABILITY
,
2641 sizeof(u32
), nla_data(a
)))
2644 case OVS_SAMPLE_ATTR_ACTIONS
:
2645 st_sample
= nla_nest_start(skb
, OVS_SAMPLE_ATTR_ACTIONS
);
2648 err
= ovs_nla_put_actions(nla_data(a
), nla_len(a
), skb
);
2651 nla_nest_end(skb
, st_sample
);
2656 nla_nest_end(skb
, start
);
2660 static int set_action_to_attr(const struct nlattr
*a
, struct sk_buff
*skb
)
2662 const struct nlattr
*ovs_key
= nla_data(a
);
2663 int key_type
= nla_type(ovs_key
);
2664 struct nlattr
*start
;
2668 case OVS_KEY_ATTR_TUNNEL_INFO
: {
2669 struct ovs_tunnel_info
*ovs_tun
= nla_data(ovs_key
);
2670 struct ip_tunnel_info
*tun_info
= &ovs_tun
->tun_dst
->u
.tun_info
;
2672 start
= nla_nest_start(skb
, OVS_ACTION_ATTR_SET
);
2676 err
= ip_tun_to_nlattr(skb
, &tun_info
->key
,
2677 ip_tunnel_info_opts(tun_info
),
2678 tun_info
->options_len
,
2679 ip_tunnel_info_af(tun_info
));
2682 nla_nest_end(skb
, start
);
2686 if (nla_put(skb
, OVS_ACTION_ATTR_SET
, nla_len(a
), ovs_key
))
2694 static int masked_set_action_to_set_action_attr(const struct nlattr
*a
,
2695 struct sk_buff
*skb
)
2697 const struct nlattr
*ovs_key
= nla_data(a
);
2699 size_t key_len
= nla_len(ovs_key
) / 2;
2701 /* Revert the conversion we did from a non-masked set action to
2702 * masked set action.
2704 nla
= nla_nest_start(skb
, OVS_ACTION_ATTR_SET
);
2708 if (nla_put(skb
, nla_type(ovs_key
), key_len
, nla_data(ovs_key
)))
2711 nla_nest_end(skb
, nla
);
2715 int ovs_nla_put_actions(const struct nlattr
*attr
, int len
, struct sk_buff
*skb
)
2717 const struct nlattr
*a
;
2720 nla_for_each_attr(a
, attr
, len
, rem
) {
2721 int type
= nla_type(a
);
2724 case OVS_ACTION_ATTR_SET
:
2725 err
= set_action_to_attr(a
, skb
);
2730 case OVS_ACTION_ATTR_SET_TO_MASKED
:
2731 err
= masked_set_action_to_set_action_attr(a
, skb
);
2736 case OVS_ACTION_ATTR_SAMPLE
:
2737 err
= sample_action_to_attr(a
, skb
);
2742 case OVS_ACTION_ATTR_CT
:
2743 err
= ovs_ct_action_to_attr(nla_data(a
), skb
);
2749 if (nla_put(skb
, type
, nla_len(a
), nla_data(a
)))