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_IPV6
)
133 | (1 << OVS_KEY_ATTR_TCP
)
134 | (1 << OVS_KEY_ATTR_TCP_FLAGS
)
135 | (1 << OVS_KEY_ATTR_UDP
)
136 | (1 << OVS_KEY_ATTR_SCTP
)
137 | (1 << OVS_KEY_ATTR_ICMP
)
138 | (1 << OVS_KEY_ATTR_ICMPV6
)
139 | (1 << OVS_KEY_ATTR_ARP
)
140 | (1 << OVS_KEY_ATTR_ND
)
141 | (1 << OVS_KEY_ATTR_MPLS
));
143 /* Always allowed mask fields. */
144 mask_allowed
|= ((1 << OVS_KEY_ATTR_TUNNEL
)
145 | (1 << OVS_KEY_ATTR_IN_PORT
)
146 | (1 << OVS_KEY_ATTR_ETHERTYPE
));
148 /* Check key attributes. */
149 if (match
->key
->eth
.type
== htons(ETH_P_ARP
)
150 || match
->key
->eth
.type
== htons(ETH_P_RARP
)) {
151 key_expected
|= 1 << OVS_KEY_ATTR_ARP
;
152 if (match
->mask
&& (match
->mask
->key
.eth
.type
== htons(0xffff)))
153 mask_allowed
|= 1 << OVS_KEY_ATTR_ARP
;
156 if (eth_p_mpls(match
->key
->eth
.type
)) {
157 key_expected
|= 1 << OVS_KEY_ATTR_MPLS
;
158 if (match
->mask
&& (match
->mask
->key
.eth
.type
== htons(0xffff)))
159 mask_allowed
|= 1 << OVS_KEY_ATTR_MPLS
;
162 if (match
->key
->eth
.type
== htons(ETH_P_IP
)) {
163 key_expected
|= 1 << OVS_KEY_ATTR_IPV4
;
164 if (match
->mask
&& (match
->mask
->key
.eth
.type
== htons(0xffff)))
165 mask_allowed
|= 1 << OVS_KEY_ATTR_IPV4
;
167 if (match
->key
->ip
.frag
!= OVS_FRAG_TYPE_LATER
) {
168 if (match
->key
->ip
.proto
== IPPROTO_UDP
) {
169 key_expected
|= 1 << OVS_KEY_ATTR_UDP
;
170 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff))
171 mask_allowed
|= 1 << OVS_KEY_ATTR_UDP
;
174 if (match
->key
->ip
.proto
== IPPROTO_SCTP
) {
175 key_expected
|= 1 << OVS_KEY_ATTR_SCTP
;
176 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff))
177 mask_allowed
|= 1 << OVS_KEY_ATTR_SCTP
;
180 if (match
->key
->ip
.proto
== IPPROTO_TCP
) {
181 key_expected
|= 1 << OVS_KEY_ATTR_TCP
;
182 key_expected
|= 1 << OVS_KEY_ATTR_TCP_FLAGS
;
183 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff)) {
184 mask_allowed
|= 1 << OVS_KEY_ATTR_TCP
;
185 mask_allowed
|= 1 << OVS_KEY_ATTR_TCP_FLAGS
;
189 if (match
->key
->ip
.proto
== IPPROTO_ICMP
) {
190 key_expected
|= 1 << OVS_KEY_ATTR_ICMP
;
191 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff))
192 mask_allowed
|= 1 << OVS_KEY_ATTR_ICMP
;
197 if (match
->key
->eth
.type
== htons(ETH_P_IPV6
)) {
198 key_expected
|= 1 << OVS_KEY_ATTR_IPV6
;
199 if (match
->mask
&& (match
->mask
->key
.eth
.type
== htons(0xffff)))
200 mask_allowed
|= 1 << OVS_KEY_ATTR_IPV6
;
202 if (match
->key
->ip
.frag
!= OVS_FRAG_TYPE_LATER
) {
203 if (match
->key
->ip
.proto
== IPPROTO_UDP
) {
204 key_expected
|= 1 << OVS_KEY_ATTR_UDP
;
205 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff))
206 mask_allowed
|= 1 << OVS_KEY_ATTR_UDP
;
209 if (match
->key
->ip
.proto
== IPPROTO_SCTP
) {
210 key_expected
|= 1 << OVS_KEY_ATTR_SCTP
;
211 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff))
212 mask_allowed
|= 1 << OVS_KEY_ATTR_SCTP
;
215 if (match
->key
->ip
.proto
== IPPROTO_TCP
) {
216 key_expected
|= 1 << OVS_KEY_ATTR_TCP
;
217 key_expected
|= 1 << OVS_KEY_ATTR_TCP_FLAGS
;
218 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff)) {
219 mask_allowed
|= 1 << OVS_KEY_ATTR_TCP
;
220 mask_allowed
|= 1 << OVS_KEY_ATTR_TCP_FLAGS
;
224 if (match
->key
->ip
.proto
== IPPROTO_ICMPV6
) {
225 key_expected
|= 1 << OVS_KEY_ATTR_ICMPV6
;
226 if (match
->mask
&& (match
->mask
->key
.ip
.proto
== 0xff))
227 mask_allowed
|= 1 << OVS_KEY_ATTR_ICMPV6
;
229 if (match
->key
->tp
.src
==
230 htons(NDISC_NEIGHBOUR_SOLICITATION
) ||
231 match
->key
->tp
.src
== htons(NDISC_NEIGHBOUR_ADVERTISEMENT
)) {
232 key_expected
|= 1 << OVS_KEY_ATTR_ND
;
233 if (match
->mask
&& (match
->mask
->key
.tp
.src
== htons(0xff)))
234 mask_allowed
|= 1 << OVS_KEY_ATTR_ND
;
240 if ((key_attrs
& key_expected
) != key_expected
) {
241 /* Key attributes check failed. */
242 OVS_NLERR(log
, "Missing key (keys=%llx, expected=%llx)",
243 (unsigned long long)key_attrs
,
244 (unsigned long long)key_expected
);
248 if ((mask_attrs
& mask_allowed
) != mask_attrs
) {
249 /* Mask attributes check failed. */
250 OVS_NLERR(log
, "Unexpected mask (mask=%llx, allowed=%llx)",
251 (unsigned long long)mask_attrs
,
252 (unsigned long long)mask_allowed
);
259 size_t ovs_tun_key_attr_size(void)
261 /* Whenever adding new OVS_TUNNEL_KEY_ FIELDS, we should consider
262 * updating this function.
264 return nla_total_size_64bit(8) /* OVS_TUNNEL_KEY_ATTR_ID */
265 + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_SRC */
266 + nla_total_size(16) /* OVS_TUNNEL_KEY_ATTR_IPV[46]_DST */
267 + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TOS */
268 + nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TTL */
269 + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT */
270 + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_CSUM */
271 + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_OAM */
272 + nla_total_size(256) /* OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS */
273 /* OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS is mutually exclusive with
274 * OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS and covered by it.
276 + nla_total_size(2) /* OVS_TUNNEL_KEY_ATTR_TP_SRC */
277 + nla_total_size(2); /* OVS_TUNNEL_KEY_ATTR_TP_DST */
280 size_t ovs_key_attr_size(void)
282 /* Whenever adding new OVS_KEY_ FIELDS, we should consider
283 * updating this function.
285 BUILD_BUG_ON(OVS_KEY_ATTR_TUNNEL_INFO
!= 26);
287 return nla_total_size(4) /* OVS_KEY_ATTR_PRIORITY */
288 + nla_total_size(0) /* OVS_KEY_ATTR_TUNNEL */
289 + ovs_tun_key_attr_size()
290 + nla_total_size(4) /* OVS_KEY_ATTR_IN_PORT */
291 + nla_total_size(4) /* OVS_KEY_ATTR_SKB_MARK */
292 + nla_total_size(4) /* OVS_KEY_ATTR_DP_HASH */
293 + nla_total_size(4) /* OVS_KEY_ATTR_RECIRC_ID */
294 + nla_total_size(4) /* OVS_KEY_ATTR_CT_STATE */
295 + nla_total_size(2) /* OVS_KEY_ATTR_CT_ZONE */
296 + nla_total_size(4) /* OVS_KEY_ATTR_CT_MARK */
297 + nla_total_size(16) /* OVS_KEY_ATTR_CT_LABELS */
298 + nla_total_size(12) /* OVS_KEY_ATTR_ETHERNET */
299 + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */
300 + nla_total_size(4) /* OVS_KEY_ATTR_VLAN */
301 + nla_total_size(0) /* OVS_KEY_ATTR_ENCAP */
302 + nla_total_size(2) /* OVS_KEY_ATTR_ETHERTYPE */
303 + nla_total_size(40) /* OVS_KEY_ATTR_IPV6 */
304 + nla_total_size(2) /* OVS_KEY_ATTR_ICMPV6 */
305 + nla_total_size(28); /* OVS_KEY_ATTR_ND */
308 static const struct ovs_len_tbl ovs_vxlan_ext_key_lens
[OVS_VXLAN_EXT_MAX
+ 1] = {
309 [OVS_VXLAN_EXT_GBP
] = { .len
= sizeof(u32
) },
312 static const struct ovs_len_tbl ovs_tunnel_key_lens
[OVS_TUNNEL_KEY_ATTR_MAX
+ 1] = {
313 [OVS_TUNNEL_KEY_ATTR_ID
] = { .len
= sizeof(u64
) },
314 [OVS_TUNNEL_KEY_ATTR_IPV4_SRC
] = { .len
= sizeof(u32
) },
315 [OVS_TUNNEL_KEY_ATTR_IPV4_DST
] = { .len
= sizeof(u32
) },
316 [OVS_TUNNEL_KEY_ATTR_TOS
] = { .len
= 1 },
317 [OVS_TUNNEL_KEY_ATTR_TTL
] = { .len
= 1 },
318 [OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT
] = { .len
= 0 },
319 [OVS_TUNNEL_KEY_ATTR_CSUM
] = { .len
= 0 },
320 [OVS_TUNNEL_KEY_ATTR_TP_SRC
] = { .len
= sizeof(u16
) },
321 [OVS_TUNNEL_KEY_ATTR_TP_DST
] = { .len
= sizeof(u16
) },
322 [OVS_TUNNEL_KEY_ATTR_OAM
] = { .len
= 0 },
323 [OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS
] = { .len
= OVS_ATTR_VARIABLE
},
324 [OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS
] = { .len
= OVS_ATTR_NESTED
,
325 .next
= ovs_vxlan_ext_key_lens
},
326 [OVS_TUNNEL_KEY_ATTR_IPV6_SRC
] = { .len
= sizeof(struct in6_addr
) },
327 [OVS_TUNNEL_KEY_ATTR_IPV6_DST
] = { .len
= sizeof(struct in6_addr
) },
330 /* The size of the argument for each %OVS_KEY_ATTR_* Netlink attribute. */
331 static const struct ovs_len_tbl ovs_key_lens
[OVS_KEY_ATTR_MAX
+ 1] = {
332 [OVS_KEY_ATTR_ENCAP
] = { .len
= OVS_ATTR_NESTED
},
333 [OVS_KEY_ATTR_PRIORITY
] = { .len
= sizeof(u32
) },
334 [OVS_KEY_ATTR_IN_PORT
] = { .len
= sizeof(u32
) },
335 [OVS_KEY_ATTR_SKB_MARK
] = { .len
= sizeof(u32
) },
336 [OVS_KEY_ATTR_ETHERNET
] = { .len
= sizeof(struct ovs_key_ethernet
) },
337 [OVS_KEY_ATTR_VLAN
] = { .len
= sizeof(__be16
) },
338 [OVS_KEY_ATTR_ETHERTYPE
] = { .len
= sizeof(__be16
) },
339 [OVS_KEY_ATTR_IPV4
] = { .len
= sizeof(struct ovs_key_ipv4
) },
340 [OVS_KEY_ATTR_IPV6
] = { .len
= sizeof(struct ovs_key_ipv6
) },
341 [OVS_KEY_ATTR_TCP
] = { .len
= sizeof(struct ovs_key_tcp
) },
342 [OVS_KEY_ATTR_TCP_FLAGS
] = { .len
= sizeof(__be16
) },
343 [OVS_KEY_ATTR_UDP
] = { .len
= sizeof(struct ovs_key_udp
) },
344 [OVS_KEY_ATTR_SCTP
] = { .len
= sizeof(struct ovs_key_sctp
) },
345 [OVS_KEY_ATTR_ICMP
] = { .len
= sizeof(struct ovs_key_icmp
) },
346 [OVS_KEY_ATTR_ICMPV6
] = { .len
= sizeof(struct ovs_key_icmpv6
) },
347 [OVS_KEY_ATTR_ARP
] = { .len
= sizeof(struct ovs_key_arp
) },
348 [OVS_KEY_ATTR_ND
] = { .len
= sizeof(struct ovs_key_nd
) },
349 [OVS_KEY_ATTR_RECIRC_ID
] = { .len
= sizeof(u32
) },
350 [OVS_KEY_ATTR_DP_HASH
] = { .len
= sizeof(u32
) },
351 [OVS_KEY_ATTR_TUNNEL
] = { .len
= OVS_ATTR_NESTED
,
352 .next
= ovs_tunnel_key_lens
, },
353 [OVS_KEY_ATTR_MPLS
] = { .len
= sizeof(struct ovs_key_mpls
) },
354 [OVS_KEY_ATTR_CT_STATE
] = { .len
= sizeof(u32
) },
355 [OVS_KEY_ATTR_CT_ZONE
] = { .len
= sizeof(u16
) },
356 [OVS_KEY_ATTR_CT_MARK
] = { .len
= sizeof(u32
) },
357 [OVS_KEY_ATTR_CT_LABELS
] = { .len
= sizeof(struct ovs_key_ct_labels
) },
360 static bool check_attr_len(unsigned int attr_len
, unsigned int expected_len
)
362 return expected_len
== attr_len
||
363 expected_len
== OVS_ATTR_NESTED
||
364 expected_len
== OVS_ATTR_VARIABLE
;
367 static bool is_all_zero(const u8
*fp
, size_t size
)
374 for (i
= 0; i
< size
; i
++)
381 static int __parse_flow_nlattrs(const struct nlattr
*attr
,
382 const struct nlattr
*a
[],
383 u64
*attrsp
, bool log
, bool nz
)
385 const struct nlattr
*nla
;
390 nla_for_each_nested(nla
, attr
, rem
) {
391 u16 type
= nla_type(nla
);
394 if (type
> OVS_KEY_ATTR_MAX
) {
395 OVS_NLERR(log
, "Key type %d is out of range max %d",
396 type
, OVS_KEY_ATTR_MAX
);
400 if (attrs
& (1 << type
)) {
401 OVS_NLERR(log
, "Duplicate key (type %d).", type
);
405 expected_len
= ovs_key_lens
[type
].len
;
406 if (!check_attr_len(nla_len(nla
), expected_len
)) {
407 OVS_NLERR(log
, "Key %d has unexpected len %d expected %d",
408 type
, nla_len(nla
), expected_len
);
412 if (!nz
|| !is_all_zero(nla_data(nla
), expected_len
)) {
418 OVS_NLERR(log
, "Message has %d unknown bytes.", rem
);
426 static int parse_flow_mask_nlattrs(const struct nlattr
*attr
,
427 const struct nlattr
*a
[], u64
*attrsp
,
430 return __parse_flow_nlattrs(attr
, a
, attrsp
, log
, true);
433 static int parse_flow_nlattrs(const struct nlattr
*attr
,
434 const struct nlattr
*a
[], u64
*attrsp
,
437 return __parse_flow_nlattrs(attr
, a
, attrsp
, log
, false);
440 static int genev_tun_opt_from_nlattr(const struct nlattr
*a
,
441 struct sw_flow_match
*match
, bool is_mask
,
444 unsigned long opt_key_offset
;
446 if (nla_len(a
) > sizeof(match
->key
->tun_opts
)) {
447 OVS_NLERR(log
, "Geneve option length err (len %d, max %zu).",
448 nla_len(a
), sizeof(match
->key
->tun_opts
));
452 if (nla_len(a
) % 4 != 0) {
453 OVS_NLERR(log
, "Geneve opt len %d is not a multiple of 4.",
458 /* We need to record the length of the options passed
459 * down, otherwise packets with the same format but
460 * additional options will be silently matched.
463 SW_FLOW_KEY_PUT(match
, tun_opts_len
, nla_len(a
),
466 /* This is somewhat unusual because it looks at
467 * both the key and mask while parsing the
468 * attributes (and by extension assumes the key
469 * is parsed first). Normally, we would verify
470 * that each is the correct length and that the
471 * attributes line up in the validate function.
472 * However, that is difficult because this is
473 * variable length and we won't have the
476 if (match
->key
->tun_opts_len
!= nla_len(a
)) {
477 OVS_NLERR(log
, "Geneve option len %d != mask len %d",
478 match
->key
->tun_opts_len
, nla_len(a
));
482 SW_FLOW_KEY_PUT(match
, tun_opts_len
, 0xff, true);
485 opt_key_offset
= TUN_METADATA_OFFSET(nla_len(a
));
486 SW_FLOW_KEY_MEMCPY_OFFSET(match
, opt_key_offset
, nla_data(a
),
487 nla_len(a
), is_mask
);
491 static int vxlan_tun_opt_from_nlattr(const struct nlattr
*attr
,
492 struct sw_flow_match
*match
, bool is_mask
,
497 unsigned long opt_key_offset
;
498 struct vxlan_metadata opts
;
500 BUILD_BUG_ON(sizeof(opts
) > sizeof(match
->key
->tun_opts
));
502 memset(&opts
, 0, sizeof(opts
));
503 nla_for_each_nested(a
, attr
, rem
) {
504 int type
= nla_type(a
);
506 if (type
> OVS_VXLAN_EXT_MAX
) {
507 OVS_NLERR(log
, "VXLAN extension %d out of range max %d",
508 type
, OVS_VXLAN_EXT_MAX
);
512 if (!check_attr_len(nla_len(a
),
513 ovs_vxlan_ext_key_lens
[type
].len
)) {
514 OVS_NLERR(log
, "VXLAN extension %d has unexpected len %d expected %d",
516 ovs_vxlan_ext_key_lens
[type
].len
);
521 case OVS_VXLAN_EXT_GBP
:
522 opts
.gbp
= nla_get_u32(a
);
525 OVS_NLERR(log
, "Unknown VXLAN extension attribute %d",
531 OVS_NLERR(log
, "VXLAN extension message has %d unknown bytes.",
537 SW_FLOW_KEY_PUT(match
, tun_opts_len
, sizeof(opts
), false);
539 SW_FLOW_KEY_PUT(match
, tun_opts_len
, 0xff, true);
541 opt_key_offset
= TUN_METADATA_OFFSET(sizeof(opts
));
542 SW_FLOW_KEY_MEMCPY_OFFSET(match
, opt_key_offset
, &opts
, sizeof(opts
),
547 static int ip_tun_from_nlattr(const struct nlattr
*attr
,
548 struct sw_flow_match
*match
, bool is_mask
,
551 bool ttl
= false, ipv4
= false, ipv6
= false;
552 __be16 tun_flags
= 0;
557 nla_for_each_nested(a
, attr
, rem
) {
558 int type
= nla_type(a
);
561 if (type
> OVS_TUNNEL_KEY_ATTR_MAX
) {
562 OVS_NLERR(log
, "Tunnel attr %d out of range max %d",
563 type
, OVS_TUNNEL_KEY_ATTR_MAX
);
567 if (!check_attr_len(nla_len(a
),
568 ovs_tunnel_key_lens
[type
].len
)) {
569 OVS_NLERR(log
, "Tunnel attr %d has unexpected len %d expected %d",
570 type
, nla_len(a
), ovs_tunnel_key_lens
[type
].len
);
575 case OVS_TUNNEL_KEY_ATTR_ID
:
576 SW_FLOW_KEY_PUT(match
, tun_key
.tun_id
,
577 nla_get_be64(a
), is_mask
);
578 tun_flags
|= TUNNEL_KEY
;
580 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC
:
581 SW_FLOW_KEY_PUT(match
, tun_key
.u
.ipv4
.src
,
582 nla_get_in_addr(a
), is_mask
);
585 case OVS_TUNNEL_KEY_ATTR_IPV4_DST
:
586 SW_FLOW_KEY_PUT(match
, tun_key
.u
.ipv4
.dst
,
587 nla_get_in_addr(a
), is_mask
);
590 case OVS_TUNNEL_KEY_ATTR_IPV6_SRC
:
591 SW_FLOW_KEY_PUT(match
, tun_key
.u
.ipv6
.dst
,
592 nla_get_in6_addr(a
), is_mask
);
595 case OVS_TUNNEL_KEY_ATTR_IPV6_DST
:
596 SW_FLOW_KEY_PUT(match
, tun_key
.u
.ipv6
.dst
,
597 nla_get_in6_addr(a
), is_mask
);
600 case OVS_TUNNEL_KEY_ATTR_TOS
:
601 SW_FLOW_KEY_PUT(match
, tun_key
.tos
,
602 nla_get_u8(a
), is_mask
);
604 case OVS_TUNNEL_KEY_ATTR_TTL
:
605 SW_FLOW_KEY_PUT(match
, tun_key
.ttl
,
606 nla_get_u8(a
), is_mask
);
609 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT
:
610 tun_flags
|= TUNNEL_DONT_FRAGMENT
;
612 case OVS_TUNNEL_KEY_ATTR_CSUM
:
613 tun_flags
|= TUNNEL_CSUM
;
615 case OVS_TUNNEL_KEY_ATTR_TP_SRC
:
616 SW_FLOW_KEY_PUT(match
, tun_key
.tp_src
,
617 nla_get_be16(a
), is_mask
);
619 case OVS_TUNNEL_KEY_ATTR_TP_DST
:
620 SW_FLOW_KEY_PUT(match
, tun_key
.tp_dst
,
621 nla_get_be16(a
), is_mask
);
623 case OVS_TUNNEL_KEY_ATTR_OAM
:
624 tun_flags
|= TUNNEL_OAM
;
626 case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS
:
628 OVS_NLERR(log
, "Multiple metadata blocks provided");
632 err
= genev_tun_opt_from_nlattr(a
, match
, is_mask
, log
);
636 tun_flags
|= TUNNEL_GENEVE_OPT
;
639 case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS
:
641 OVS_NLERR(log
, "Multiple metadata blocks provided");
645 err
= vxlan_tun_opt_from_nlattr(a
, match
, is_mask
, log
);
649 tun_flags
|= TUNNEL_VXLAN_OPT
;
653 OVS_NLERR(log
, "Unknown IP tunnel attribute %d",
659 SW_FLOW_KEY_PUT(match
, tun_key
.tun_flags
, tun_flags
, is_mask
);
661 SW_FLOW_KEY_MEMSET_FIELD(match
, tun_proto
, 0xff, true);
663 SW_FLOW_KEY_PUT(match
, tun_proto
, ipv6
? AF_INET6
: AF_INET
,
667 OVS_NLERR(log
, "IP tunnel attribute has %d unknown bytes.",
673 OVS_NLERR(log
, "Mixed IPv4 and IPv6 tunnel attributes");
678 if (!ipv4
&& !ipv6
) {
679 OVS_NLERR(log
, "IP tunnel dst address not specified");
682 if (ipv4
&& !match
->key
->tun_key
.u
.ipv4
.dst
) {
683 OVS_NLERR(log
, "IPv4 tunnel dst address is zero");
686 if (ipv6
&& ipv6_addr_any(&match
->key
->tun_key
.u
.ipv6
.dst
)) {
687 OVS_NLERR(log
, "IPv6 tunnel dst address is zero");
692 OVS_NLERR(log
, "IP tunnel TTL not specified.");
700 static int vxlan_opt_to_nlattr(struct sk_buff
*skb
,
701 const void *tun_opts
, int swkey_tun_opts_len
)
703 const struct vxlan_metadata
*opts
= tun_opts
;
706 nla
= nla_nest_start(skb
, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS
);
710 if (nla_put_u32(skb
, OVS_VXLAN_EXT_GBP
, opts
->gbp
) < 0)
713 nla_nest_end(skb
, nla
);
717 static int __ip_tun_to_nlattr(struct sk_buff
*skb
,
718 const struct ip_tunnel_key
*output
,
719 const void *tun_opts
, int swkey_tun_opts_len
,
720 unsigned short tun_proto
)
722 if (output
->tun_flags
& TUNNEL_KEY
&&
723 nla_put_be64(skb
, OVS_TUNNEL_KEY_ATTR_ID
, output
->tun_id
,
724 OVS_TUNNEL_KEY_ATTR_PAD
))
728 if (output
->u
.ipv4
.src
&&
729 nla_put_in_addr(skb
, OVS_TUNNEL_KEY_ATTR_IPV4_SRC
,
732 if (output
->u
.ipv4
.dst
&&
733 nla_put_in_addr(skb
, OVS_TUNNEL_KEY_ATTR_IPV4_DST
,
738 if (!ipv6_addr_any(&output
->u
.ipv6
.src
) &&
739 nla_put_in6_addr(skb
, OVS_TUNNEL_KEY_ATTR_IPV6_SRC
,
740 &output
->u
.ipv6
.src
))
742 if (!ipv6_addr_any(&output
->u
.ipv6
.dst
) &&
743 nla_put_in6_addr(skb
, OVS_TUNNEL_KEY_ATTR_IPV6_DST
,
744 &output
->u
.ipv6
.dst
))
749 nla_put_u8(skb
, OVS_TUNNEL_KEY_ATTR_TOS
, output
->tos
))
751 if (nla_put_u8(skb
, OVS_TUNNEL_KEY_ATTR_TTL
, output
->ttl
))
753 if ((output
->tun_flags
& TUNNEL_DONT_FRAGMENT
) &&
754 nla_put_flag(skb
, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT
))
756 if ((output
->tun_flags
& TUNNEL_CSUM
) &&
757 nla_put_flag(skb
, OVS_TUNNEL_KEY_ATTR_CSUM
))
759 if (output
->tp_src
&&
760 nla_put_be16(skb
, OVS_TUNNEL_KEY_ATTR_TP_SRC
, output
->tp_src
))
762 if (output
->tp_dst
&&
763 nla_put_be16(skb
, OVS_TUNNEL_KEY_ATTR_TP_DST
, output
->tp_dst
))
765 if ((output
->tun_flags
& TUNNEL_OAM
) &&
766 nla_put_flag(skb
, OVS_TUNNEL_KEY_ATTR_OAM
))
768 if (swkey_tun_opts_len
) {
769 if (output
->tun_flags
& TUNNEL_GENEVE_OPT
&&
770 nla_put(skb
, OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS
,
771 swkey_tun_opts_len
, tun_opts
))
773 else if (output
->tun_flags
& TUNNEL_VXLAN_OPT
&&
774 vxlan_opt_to_nlattr(skb
, tun_opts
, swkey_tun_opts_len
))
781 static int ip_tun_to_nlattr(struct sk_buff
*skb
,
782 const struct ip_tunnel_key
*output
,
783 const void *tun_opts
, int swkey_tun_opts_len
,
784 unsigned short tun_proto
)
789 nla
= nla_nest_start(skb
, OVS_KEY_ATTR_TUNNEL
);
793 err
= __ip_tun_to_nlattr(skb
, output
, tun_opts
, swkey_tun_opts_len
,
798 nla_nest_end(skb
, nla
);
802 int ovs_nla_put_tunnel_info(struct sk_buff
*skb
,
803 struct ip_tunnel_info
*tun_info
)
805 return __ip_tun_to_nlattr(skb
, &tun_info
->key
,
806 ip_tunnel_info_opts(tun_info
),
807 tun_info
->options_len
,
808 ip_tunnel_info_af(tun_info
));
811 static int encode_vlan_from_nlattrs(struct sw_flow_match
*match
,
812 const struct nlattr
*a
[],
813 bool is_mask
, bool inner
)
818 if (a
[OVS_KEY_ATTR_VLAN
])
819 tci
= nla_get_be16(a
[OVS_KEY_ATTR_VLAN
]);
821 if (a
[OVS_KEY_ATTR_ETHERTYPE
])
822 tpid
= nla_get_be16(a
[OVS_KEY_ATTR_ETHERTYPE
]);
824 if (likely(!inner
)) {
825 SW_FLOW_KEY_PUT(match
, eth
.vlan
.tpid
, tpid
, is_mask
);
826 SW_FLOW_KEY_PUT(match
, eth
.vlan
.tci
, tci
, is_mask
);
828 SW_FLOW_KEY_PUT(match
, eth
.cvlan
.tpid
, tpid
, is_mask
);
829 SW_FLOW_KEY_PUT(match
, eth
.cvlan
.tci
, tci
, is_mask
);
834 static int validate_vlan_from_nlattrs(const struct sw_flow_match
*match
,
835 u64 key_attrs
, bool inner
,
836 const struct nlattr
**a
, bool log
)
840 if (!((key_attrs
& (1 << OVS_KEY_ATTR_ETHERNET
)) &&
841 (key_attrs
& (1 << OVS_KEY_ATTR_ETHERTYPE
)) &&
842 eth_type_vlan(nla_get_be16(a
[OVS_KEY_ATTR_ETHERTYPE
])))) {
847 if (!((key_attrs
& (1 << OVS_KEY_ATTR_VLAN
)) &&
848 (key_attrs
& (1 << OVS_KEY_ATTR_ENCAP
)))) {
849 OVS_NLERR(log
, "Invalid %s frame", (inner
) ? "C-VLAN" : "VLAN");
853 if (a
[OVS_KEY_ATTR_VLAN
])
854 tci
= nla_get_be16(a
[OVS_KEY_ATTR_VLAN
]);
856 if (!(tci
& htons(VLAN_TAG_PRESENT
))) {
858 OVS_NLERR(log
, "%s TCI does not have VLAN_TAG_PRESENT bit set.",
859 (inner
) ? "C-VLAN" : "VLAN");
861 } else if (nla_len(a
[OVS_KEY_ATTR_ENCAP
])) {
862 /* Corner case for truncated VLAN header. */
863 OVS_NLERR(log
, "Truncated %s header has non-zero encap attribute.",
864 (inner
) ? "C-VLAN" : "VLAN");
872 static int validate_vlan_mask_from_nlattrs(const struct sw_flow_match
*match
,
873 u64 key_attrs
, bool inner
,
874 const struct nlattr
**a
, bool log
)
878 bool encap_valid
= !!(match
->key
->eth
.vlan
.tci
&
879 htons(VLAN_TAG_PRESENT
));
880 bool i_encap_valid
= !!(match
->key
->eth
.cvlan
.tci
&
881 htons(VLAN_TAG_PRESENT
));
883 if (!(key_attrs
& (1 << OVS_KEY_ATTR_ENCAP
))) {
888 if ((!inner
&& !encap_valid
) || (inner
&& !i_encap_valid
)) {
889 OVS_NLERR(log
, "Encap mask attribute is set for non-%s frame.",
890 (inner
) ? "C-VLAN" : "VLAN");
894 if (a
[OVS_KEY_ATTR_VLAN
])
895 tci
= nla_get_be16(a
[OVS_KEY_ATTR_VLAN
]);
897 if (a
[OVS_KEY_ATTR_ETHERTYPE
])
898 tpid
= nla_get_be16(a
[OVS_KEY_ATTR_ETHERTYPE
]);
900 if (tpid
!= htons(0xffff)) {
901 OVS_NLERR(log
, "Must have an exact match on %s TPID (mask=%x).",
902 (inner
) ? "C-VLAN" : "VLAN", ntohs(tpid
));
905 if (!(tci
& htons(VLAN_TAG_PRESENT
))) {
906 OVS_NLERR(log
, "%s TCI mask does not have exact match for VLAN_TAG_PRESENT bit.",
907 (inner
) ? "C-VLAN" : "VLAN");
914 static int __parse_vlan_from_nlattrs(struct sw_flow_match
*match
,
915 u64
*key_attrs
, bool inner
,
916 const struct nlattr
**a
, bool is_mask
,
920 const struct nlattr
*encap
;
923 err
= validate_vlan_from_nlattrs(match
, *key_attrs
, inner
,
926 err
= validate_vlan_mask_from_nlattrs(match
, *key_attrs
, inner
,
931 err
= encode_vlan_from_nlattrs(match
, a
, is_mask
, inner
);
935 *key_attrs
&= ~(1 << OVS_KEY_ATTR_ENCAP
);
936 *key_attrs
&= ~(1 << OVS_KEY_ATTR_VLAN
);
937 *key_attrs
&= ~(1 << OVS_KEY_ATTR_ETHERTYPE
);
939 encap
= a
[OVS_KEY_ATTR_ENCAP
];
942 err
= parse_flow_nlattrs(encap
, a
, key_attrs
, log
);
944 err
= parse_flow_mask_nlattrs(encap
, a
, key_attrs
, log
);
949 static int parse_vlan_from_nlattrs(struct sw_flow_match
*match
,
950 u64
*key_attrs
, const struct nlattr
**a
,
951 bool is_mask
, bool log
)
954 bool encap_valid
= false;
956 err
= __parse_vlan_from_nlattrs(match
, key_attrs
, false, a
,
961 encap_valid
= !!(match
->key
->eth
.vlan
.tci
& htons(VLAN_TAG_PRESENT
));
963 err
= __parse_vlan_from_nlattrs(match
, key_attrs
, true, a
,
972 static int parse_eth_type_from_nlattrs(struct sw_flow_match
*match
,
973 u64
*attrs
, const struct nlattr
**a
,
974 bool is_mask
, bool log
)
978 eth_type
= nla_get_be16(a
[OVS_KEY_ATTR_ETHERTYPE
]);
980 /* Always exact match EtherType. */
981 eth_type
= htons(0xffff);
982 } else if (!eth_proto_is_802_3(eth_type
)) {
983 OVS_NLERR(log
, "EtherType %x is less than min %x",
984 ntohs(eth_type
), ETH_P_802_3_MIN
);
988 SW_FLOW_KEY_PUT(match
, eth
.type
, eth_type
, is_mask
);
989 *attrs
&= ~(1 << OVS_KEY_ATTR_ETHERTYPE
);
993 static int metadata_from_nlattrs(struct net
*net
, struct sw_flow_match
*match
,
994 u64
*attrs
, const struct nlattr
**a
,
995 bool is_mask
, bool log
)
997 u8 mac_proto
= MAC_PROTO_ETHERNET
;
999 if (*attrs
& (1 << OVS_KEY_ATTR_DP_HASH
)) {
1000 u32 hash_val
= nla_get_u32(a
[OVS_KEY_ATTR_DP_HASH
]);
1002 SW_FLOW_KEY_PUT(match
, ovs_flow_hash
, hash_val
, is_mask
);
1003 *attrs
&= ~(1 << OVS_KEY_ATTR_DP_HASH
);
1006 if (*attrs
& (1 << OVS_KEY_ATTR_RECIRC_ID
)) {
1007 u32 recirc_id
= nla_get_u32(a
[OVS_KEY_ATTR_RECIRC_ID
]);
1009 SW_FLOW_KEY_PUT(match
, recirc_id
, recirc_id
, is_mask
);
1010 *attrs
&= ~(1 << OVS_KEY_ATTR_RECIRC_ID
);
1013 if (*attrs
& (1 << OVS_KEY_ATTR_PRIORITY
)) {
1014 SW_FLOW_KEY_PUT(match
, phy
.priority
,
1015 nla_get_u32(a
[OVS_KEY_ATTR_PRIORITY
]), is_mask
);
1016 *attrs
&= ~(1 << OVS_KEY_ATTR_PRIORITY
);
1019 if (*attrs
& (1 << OVS_KEY_ATTR_IN_PORT
)) {
1020 u32 in_port
= nla_get_u32(a
[OVS_KEY_ATTR_IN_PORT
]);
1023 in_port
= 0xffffffff; /* Always exact match in_port. */
1024 } else if (in_port
>= DP_MAX_PORTS
) {
1025 OVS_NLERR(log
, "Port %d exceeds max allowable %d",
1026 in_port
, DP_MAX_PORTS
);
1030 SW_FLOW_KEY_PUT(match
, phy
.in_port
, in_port
, is_mask
);
1031 *attrs
&= ~(1 << OVS_KEY_ATTR_IN_PORT
);
1032 } else if (!is_mask
) {
1033 SW_FLOW_KEY_PUT(match
, phy
.in_port
, DP_MAX_PORTS
, is_mask
);
1036 if (*attrs
& (1 << OVS_KEY_ATTR_SKB_MARK
)) {
1037 uint32_t mark
= nla_get_u32(a
[OVS_KEY_ATTR_SKB_MARK
]);
1039 SW_FLOW_KEY_PUT(match
, phy
.skb_mark
, mark
, is_mask
);
1040 *attrs
&= ~(1 << OVS_KEY_ATTR_SKB_MARK
);
1042 if (*attrs
& (1 << OVS_KEY_ATTR_TUNNEL
)) {
1043 if (ip_tun_from_nlattr(a
[OVS_KEY_ATTR_TUNNEL
], match
,
1046 *attrs
&= ~(1 << OVS_KEY_ATTR_TUNNEL
);
1049 if (*attrs
& (1 << OVS_KEY_ATTR_CT_STATE
) &&
1050 ovs_ct_verify(net
, OVS_KEY_ATTR_CT_STATE
)) {
1051 u32 ct_state
= nla_get_u32(a
[OVS_KEY_ATTR_CT_STATE
]);
1053 if (ct_state
& ~CT_SUPPORTED_MASK
) {
1054 OVS_NLERR(log
, "ct_state flags %08x unsupported",
1059 SW_FLOW_KEY_PUT(match
, ct
.state
, ct_state
, is_mask
);
1060 *attrs
&= ~(1ULL << OVS_KEY_ATTR_CT_STATE
);
1062 if (*attrs
& (1 << OVS_KEY_ATTR_CT_ZONE
) &&
1063 ovs_ct_verify(net
, OVS_KEY_ATTR_CT_ZONE
)) {
1064 u16 ct_zone
= nla_get_u16(a
[OVS_KEY_ATTR_CT_ZONE
]);
1066 SW_FLOW_KEY_PUT(match
, ct
.zone
, ct_zone
, is_mask
);
1067 *attrs
&= ~(1ULL << OVS_KEY_ATTR_CT_ZONE
);
1069 if (*attrs
& (1 << OVS_KEY_ATTR_CT_MARK
) &&
1070 ovs_ct_verify(net
, OVS_KEY_ATTR_CT_MARK
)) {
1071 u32 mark
= nla_get_u32(a
[OVS_KEY_ATTR_CT_MARK
]);
1073 SW_FLOW_KEY_PUT(match
, ct
.mark
, mark
, is_mask
);
1074 *attrs
&= ~(1ULL << OVS_KEY_ATTR_CT_MARK
);
1076 if (*attrs
& (1 << OVS_KEY_ATTR_CT_LABELS
) &&
1077 ovs_ct_verify(net
, OVS_KEY_ATTR_CT_LABELS
)) {
1078 const struct ovs_key_ct_labels
*cl
;
1080 cl
= nla_data(a
[OVS_KEY_ATTR_CT_LABELS
]);
1081 SW_FLOW_KEY_MEMCPY(match
, ct
.labels
, cl
->ct_labels
,
1082 sizeof(*cl
), is_mask
);
1083 *attrs
&= ~(1ULL << OVS_KEY_ATTR_CT_LABELS
);
1086 /* For layer 3 packets the Ethernet type is provided
1087 * and treated as metadata but no MAC addresses are provided.
1089 if (!(*attrs
& (1ULL << OVS_KEY_ATTR_ETHERNET
)) &&
1090 (*attrs
& (1ULL << OVS_KEY_ATTR_ETHERTYPE
)))
1091 mac_proto
= MAC_PROTO_NONE
;
1093 /* Always exact match mac_proto */
1094 SW_FLOW_KEY_PUT(match
, mac_proto
, is_mask
? 0xff : mac_proto
, is_mask
);
1096 if (mac_proto
== MAC_PROTO_NONE
)
1097 return parse_eth_type_from_nlattrs(match
, attrs
, a
, is_mask
,
1103 static int ovs_key_from_nlattrs(struct net
*net
, struct sw_flow_match
*match
,
1104 u64 attrs
, const struct nlattr
**a
,
1105 bool is_mask
, bool log
)
1109 err
= metadata_from_nlattrs(net
, match
, &attrs
, a
, is_mask
, log
);
1113 if (attrs
& (1 << OVS_KEY_ATTR_ETHERNET
)) {
1114 const struct ovs_key_ethernet
*eth_key
;
1116 eth_key
= nla_data(a
[OVS_KEY_ATTR_ETHERNET
]);
1117 SW_FLOW_KEY_MEMCPY(match
, eth
.src
,
1118 eth_key
->eth_src
, ETH_ALEN
, is_mask
);
1119 SW_FLOW_KEY_MEMCPY(match
, eth
.dst
,
1120 eth_key
->eth_dst
, ETH_ALEN
, is_mask
);
1121 attrs
&= ~(1 << OVS_KEY_ATTR_ETHERNET
);
1123 if (attrs
& (1 << OVS_KEY_ATTR_VLAN
)) {
1124 /* VLAN attribute is always parsed before getting here since it
1125 * may occur multiple times.
1127 OVS_NLERR(log
, "VLAN attribute unexpected.");
1131 if (attrs
& (1 << OVS_KEY_ATTR_ETHERTYPE
)) {
1132 err
= parse_eth_type_from_nlattrs(match
, &attrs
, a
, is_mask
,
1136 } else if (!is_mask
) {
1137 SW_FLOW_KEY_PUT(match
, eth
.type
, htons(ETH_P_802_2
), is_mask
);
1139 } else if (!match
->key
->eth
.type
) {
1140 OVS_NLERR(log
, "Either Ethernet header or EtherType is required.");
1144 if (attrs
& (1 << OVS_KEY_ATTR_IPV4
)) {
1145 const struct ovs_key_ipv4
*ipv4_key
;
1147 ipv4_key
= nla_data(a
[OVS_KEY_ATTR_IPV4
]);
1148 if (!is_mask
&& ipv4_key
->ipv4_frag
> OVS_FRAG_TYPE_MAX
) {
1149 OVS_NLERR(log
, "IPv4 frag type %d is out of range max %d",
1150 ipv4_key
->ipv4_frag
, OVS_FRAG_TYPE_MAX
);
1153 SW_FLOW_KEY_PUT(match
, ip
.proto
,
1154 ipv4_key
->ipv4_proto
, is_mask
);
1155 SW_FLOW_KEY_PUT(match
, ip
.tos
,
1156 ipv4_key
->ipv4_tos
, is_mask
);
1157 SW_FLOW_KEY_PUT(match
, ip
.ttl
,
1158 ipv4_key
->ipv4_ttl
, is_mask
);
1159 SW_FLOW_KEY_PUT(match
, ip
.frag
,
1160 ipv4_key
->ipv4_frag
, is_mask
);
1161 SW_FLOW_KEY_PUT(match
, ipv4
.addr
.src
,
1162 ipv4_key
->ipv4_src
, is_mask
);
1163 SW_FLOW_KEY_PUT(match
, ipv4
.addr
.dst
,
1164 ipv4_key
->ipv4_dst
, is_mask
);
1165 attrs
&= ~(1 << OVS_KEY_ATTR_IPV4
);
1168 if (attrs
& (1 << OVS_KEY_ATTR_IPV6
)) {
1169 const struct ovs_key_ipv6
*ipv6_key
;
1171 ipv6_key
= nla_data(a
[OVS_KEY_ATTR_IPV6
]);
1172 if (!is_mask
&& ipv6_key
->ipv6_frag
> OVS_FRAG_TYPE_MAX
) {
1173 OVS_NLERR(log
, "IPv6 frag type %d is out of range max %d",
1174 ipv6_key
->ipv6_frag
, OVS_FRAG_TYPE_MAX
);
1178 if (!is_mask
&& ipv6_key
->ipv6_label
& htonl(0xFFF00000)) {
1179 OVS_NLERR(log
, "IPv6 flow label %x is out of range (max=%x).\n",
1180 ntohl(ipv6_key
->ipv6_label
), (1 << 20) - 1);
1184 SW_FLOW_KEY_PUT(match
, ipv6
.label
,
1185 ipv6_key
->ipv6_label
, is_mask
);
1186 SW_FLOW_KEY_PUT(match
, ip
.proto
,
1187 ipv6_key
->ipv6_proto
, is_mask
);
1188 SW_FLOW_KEY_PUT(match
, ip
.tos
,
1189 ipv6_key
->ipv6_tclass
, is_mask
);
1190 SW_FLOW_KEY_PUT(match
, ip
.ttl
,
1191 ipv6_key
->ipv6_hlimit
, is_mask
);
1192 SW_FLOW_KEY_PUT(match
, ip
.frag
,
1193 ipv6_key
->ipv6_frag
, is_mask
);
1194 SW_FLOW_KEY_MEMCPY(match
, ipv6
.addr
.src
,
1196 sizeof(match
->key
->ipv6
.addr
.src
),
1198 SW_FLOW_KEY_MEMCPY(match
, ipv6
.addr
.dst
,
1200 sizeof(match
->key
->ipv6
.addr
.dst
),
1203 attrs
&= ~(1 << OVS_KEY_ATTR_IPV6
);
1206 if (attrs
& (1 << OVS_KEY_ATTR_ARP
)) {
1207 const struct ovs_key_arp
*arp_key
;
1209 arp_key
= nla_data(a
[OVS_KEY_ATTR_ARP
]);
1210 if (!is_mask
&& (arp_key
->arp_op
& htons(0xff00))) {
1211 OVS_NLERR(log
, "Unknown ARP opcode (opcode=%d).",
1216 SW_FLOW_KEY_PUT(match
, ipv4
.addr
.src
,
1217 arp_key
->arp_sip
, is_mask
);
1218 SW_FLOW_KEY_PUT(match
, ipv4
.addr
.dst
,
1219 arp_key
->arp_tip
, is_mask
);
1220 SW_FLOW_KEY_PUT(match
, ip
.proto
,
1221 ntohs(arp_key
->arp_op
), is_mask
);
1222 SW_FLOW_KEY_MEMCPY(match
, ipv4
.arp
.sha
,
1223 arp_key
->arp_sha
, ETH_ALEN
, is_mask
);
1224 SW_FLOW_KEY_MEMCPY(match
, ipv4
.arp
.tha
,
1225 arp_key
->arp_tha
, ETH_ALEN
, is_mask
);
1227 attrs
&= ~(1 << OVS_KEY_ATTR_ARP
);
1230 if (attrs
& (1 << OVS_KEY_ATTR_MPLS
)) {
1231 const struct ovs_key_mpls
*mpls_key
;
1233 mpls_key
= nla_data(a
[OVS_KEY_ATTR_MPLS
]);
1234 SW_FLOW_KEY_PUT(match
, mpls
.top_lse
,
1235 mpls_key
->mpls_lse
, is_mask
);
1237 attrs
&= ~(1 << OVS_KEY_ATTR_MPLS
);
1240 if (attrs
& (1 << OVS_KEY_ATTR_TCP
)) {
1241 const struct ovs_key_tcp
*tcp_key
;
1243 tcp_key
= nla_data(a
[OVS_KEY_ATTR_TCP
]);
1244 SW_FLOW_KEY_PUT(match
, tp
.src
, tcp_key
->tcp_src
, is_mask
);
1245 SW_FLOW_KEY_PUT(match
, tp
.dst
, tcp_key
->tcp_dst
, is_mask
);
1246 attrs
&= ~(1 << OVS_KEY_ATTR_TCP
);
1249 if (attrs
& (1 << OVS_KEY_ATTR_TCP_FLAGS
)) {
1250 SW_FLOW_KEY_PUT(match
, tp
.flags
,
1251 nla_get_be16(a
[OVS_KEY_ATTR_TCP_FLAGS
]),
1253 attrs
&= ~(1 << OVS_KEY_ATTR_TCP_FLAGS
);
1256 if (attrs
& (1 << OVS_KEY_ATTR_UDP
)) {
1257 const struct ovs_key_udp
*udp_key
;
1259 udp_key
= nla_data(a
[OVS_KEY_ATTR_UDP
]);
1260 SW_FLOW_KEY_PUT(match
, tp
.src
, udp_key
->udp_src
, is_mask
);
1261 SW_FLOW_KEY_PUT(match
, tp
.dst
, udp_key
->udp_dst
, is_mask
);
1262 attrs
&= ~(1 << OVS_KEY_ATTR_UDP
);
1265 if (attrs
& (1 << OVS_KEY_ATTR_SCTP
)) {
1266 const struct ovs_key_sctp
*sctp_key
;
1268 sctp_key
= nla_data(a
[OVS_KEY_ATTR_SCTP
]);
1269 SW_FLOW_KEY_PUT(match
, tp
.src
, sctp_key
->sctp_src
, is_mask
);
1270 SW_FLOW_KEY_PUT(match
, tp
.dst
, sctp_key
->sctp_dst
, is_mask
);
1271 attrs
&= ~(1 << OVS_KEY_ATTR_SCTP
);
1274 if (attrs
& (1 << OVS_KEY_ATTR_ICMP
)) {
1275 const struct ovs_key_icmp
*icmp_key
;
1277 icmp_key
= nla_data(a
[OVS_KEY_ATTR_ICMP
]);
1278 SW_FLOW_KEY_PUT(match
, tp
.src
,
1279 htons(icmp_key
->icmp_type
), is_mask
);
1280 SW_FLOW_KEY_PUT(match
, tp
.dst
,
1281 htons(icmp_key
->icmp_code
), is_mask
);
1282 attrs
&= ~(1 << OVS_KEY_ATTR_ICMP
);
1285 if (attrs
& (1 << OVS_KEY_ATTR_ICMPV6
)) {
1286 const struct ovs_key_icmpv6
*icmpv6_key
;
1288 icmpv6_key
= nla_data(a
[OVS_KEY_ATTR_ICMPV6
]);
1289 SW_FLOW_KEY_PUT(match
, tp
.src
,
1290 htons(icmpv6_key
->icmpv6_type
), is_mask
);
1291 SW_FLOW_KEY_PUT(match
, tp
.dst
,
1292 htons(icmpv6_key
->icmpv6_code
), is_mask
);
1293 attrs
&= ~(1 << OVS_KEY_ATTR_ICMPV6
);
1296 if (attrs
& (1 << OVS_KEY_ATTR_ND
)) {
1297 const struct ovs_key_nd
*nd_key
;
1299 nd_key
= nla_data(a
[OVS_KEY_ATTR_ND
]);
1300 SW_FLOW_KEY_MEMCPY(match
, ipv6
.nd
.target
,
1302 sizeof(match
->key
->ipv6
.nd
.target
),
1304 SW_FLOW_KEY_MEMCPY(match
, ipv6
.nd
.sll
,
1305 nd_key
->nd_sll
, ETH_ALEN
, is_mask
);
1306 SW_FLOW_KEY_MEMCPY(match
, ipv6
.nd
.tll
,
1307 nd_key
->nd_tll
, ETH_ALEN
, is_mask
);
1308 attrs
&= ~(1 << OVS_KEY_ATTR_ND
);
1312 OVS_NLERR(log
, "Unknown key attributes %llx",
1313 (unsigned long long)attrs
);
1320 static void nlattr_set(struct nlattr
*attr
, u8 val
,
1321 const struct ovs_len_tbl
*tbl
)
1326 /* The nlattr stream should already have been validated */
1327 nla_for_each_nested(nla
, attr
, rem
) {
1328 if (tbl
[nla_type(nla
)].len
== OVS_ATTR_NESTED
) {
1329 if (tbl
[nla_type(nla
)].next
)
1330 tbl
= tbl
[nla_type(nla
)].next
;
1331 nlattr_set(nla
, val
, tbl
);
1333 memset(nla_data(nla
), val
, nla_len(nla
));
1336 if (nla_type(nla
) == OVS_KEY_ATTR_CT_STATE
)
1337 *(u32
*)nla_data(nla
) &= CT_SUPPORTED_MASK
;
1341 static void mask_set_nlattr(struct nlattr
*attr
, u8 val
)
1343 nlattr_set(attr
, val
, ovs_key_lens
);
1347 * ovs_nla_get_match - parses Netlink attributes into a flow key and
1348 * mask. In case the 'mask' is NULL, the flow is treated as exact match
1349 * flow. Otherwise, it is treated as a wildcarded flow, except the mask
1350 * does not include any don't care bit.
1351 * @net: Used to determine per-namespace field support.
1352 * @match: receives the extracted flow match information.
1353 * @key: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute
1354 * sequence. The fields should of the packet that triggered the creation
1356 * @mask: Optional. Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink
1357 * attribute specifies the mask field of the wildcarded flow.
1358 * @log: Boolean to allow kernel error logging. Normally true, but when
1359 * probing for feature compatibility this should be passed in as false to
1360 * suppress unnecessary error logging.
1362 int ovs_nla_get_match(struct net
*net
, struct sw_flow_match
*match
,
1363 const struct nlattr
*nla_key
,
1364 const struct nlattr
*nla_mask
,
1367 const struct nlattr
*a
[OVS_KEY_ATTR_MAX
+ 1];
1368 struct nlattr
*newmask
= NULL
;
1373 err
= parse_flow_nlattrs(nla_key
, a
, &key_attrs
, log
);
1377 err
= parse_vlan_from_nlattrs(match
, &key_attrs
, a
, false, log
);
1381 err
= ovs_key_from_nlattrs(net
, match
, key_attrs
, a
, false, log
);
1387 /* Create an exact match mask. We need to set to 0xff
1388 * all the 'match->mask' fields that have been touched
1389 * in 'match->key'. We cannot simply memset
1390 * 'match->mask', because padding bytes and fields not
1391 * specified in 'match->key' should be left to 0.
1392 * Instead, we use a stream of netlink attributes,
1393 * copied from 'key' and set to 0xff.
1394 * ovs_key_from_nlattrs() will take care of filling
1395 * 'match->mask' appropriately.
1397 newmask
= kmemdup(nla_key
,
1398 nla_total_size(nla_len(nla_key
)),
1403 mask_set_nlattr(newmask
, 0xff);
1405 /* The userspace does not send tunnel attributes that
1406 * are 0, but we should not wildcard them nonetheless.
1408 if (match
->key
->tun_proto
)
1409 SW_FLOW_KEY_MEMSET_FIELD(match
, tun_key
,
1415 err
= parse_flow_mask_nlattrs(nla_mask
, a
, &mask_attrs
, log
);
1419 /* Always match on tci. */
1420 SW_FLOW_KEY_PUT(match
, eth
.vlan
.tci
, htons(0xffff), true);
1421 SW_FLOW_KEY_PUT(match
, eth
.cvlan
.tci
, htons(0xffff), true);
1423 err
= parse_vlan_from_nlattrs(match
, &mask_attrs
, a
, true, log
);
1427 err
= ovs_key_from_nlattrs(net
, match
, mask_attrs
, a
, true,
1433 if (!match_validate(match
, key_attrs
, mask_attrs
, log
))
1441 static size_t get_ufid_len(const struct nlattr
*attr
, bool log
)
1448 len
= nla_len(attr
);
1449 if (len
< 1 || len
> MAX_UFID_LENGTH
) {
1450 OVS_NLERR(log
, "ufid size %u bytes exceeds the range (1, %d)",
1451 nla_len(attr
), MAX_UFID_LENGTH
);
1458 /* Initializes 'flow->ufid', returning true if 'attr' contains a valid UFID,
1459 * or false otherwise.
1461 bool ovs_nla_get_ufid(struct sw_flow_id
*sfid
, const struct nlattr
*attr
,
1464 sfid
->ufid_len
= get_ufid_len(attr
, log
);
1466 memcpy(sfid
->ufid
, nla_data(attr
), sfid
->ufid_len
);
1468 return sfid
->ufid_len
;
1471 int ovs_nla_get_identifier(struct sw_flow_id
*sfid
, const struct nlattr
*ufid
,
1472 const struct sw_flow_key
*key
, bool log
)
1474 struct sw_flow_key
*new_key
;
1476 if (ovs_nla_get_ufid(sfid
, ufid
, log
))
1479 /* If UFID was not provided, use unmasked key. */
1480 new_key
= kmalloc(sizeof(*new_key
), GFP_KERNEL
);
1483 memcpy(new_key
, key
, sizeof(*key
));
1484 sfid
->unmasked_key
= new_key
;
1489 u32
ovs_nla_get_ufid_flags(const struct nlattr
*attr
)
1491 return attr
? nla_get_u32(attr
) : 0;
1495 * ovs_nla_get_flow_metadata - parses Netlink attributes into a flow key.
1496 * @key: Receives extracted in_port, priority, tun_key and skb_mark.
1497 * @attr: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute
1499 * @log: Boolean to allow kernel error logging. Normally true, but when
1500 * probing for feature compatibility this should be passed in as false to
1501 * suppress unnecessary error logging.
1503 * This parses a series of Netlink attributes that form a flow key, which must
1504 * take the same form accepted by flow_from_nlattrs(), but only enough of it to
1505 * get the metadata, that is, the parts of the flow key that cannot be
1506 * extracted from the packet itself.
1509 int ovs_nla_get_flow_metadata(struct net
*net
, const struct nlattr
*attr
,
1510 struct sw_flow_key
*key
,
1513 const struct nlattr
*a
[OVS_KEY_ATTR_MAX
+ 1];
1514 struct sw_flow_match match
;
1518 err
= parse_flow_nlattrs(attr
, a
, &attrs
, log
);
1522 memset(&match
, 0, sizeof(match
));
1525 memset(&key
->ct
, 0, sizeof(key
->ct
));
1526 key
->phy
.in_port
= DP_MAX_PORTS
;
1528 return metadata_from_nlattrs(net
, &match
, &attrs
, a
, false, log
);
1531 static int ovs_nla_put_vlan(struct sk_buff
*skb
, const struct vlan_head
*vh
,
1534 __be16 eth_type
= !is_mask
? vh
->tpid
: htons(0xffff);
1536 if (nla_put_be16(skb
, OVS_KEY_ATTR_ETHERTYPE
, eth_type
) ||
1537 nla_put_be16(skb
, OVS_KEY_ATTR_VLAN
, vh
->tci
))
1542 static int __ovs_nla_put_key(const struct sw_flow_key
*swkey
,
1543 const struct sw_flow_key
*output
, bool is_mask
,
1544 struct sk_buff
*skb
)
1546 struct ovs_key_ethernet
*eth_key
;
1548 struct nlattr
*encap
= NULL
;
1549 struct nlattr
*in_encap
= NULL
;
1551 if (nla_put_u32(skb
, OVS_KEY_ATTR_RECIRC_ID
, output
->recirc_id
))
1552 goto nla_put_failure
;
1554 if (nla_put_u32(skb
, OVS_KEY_ATTR_DP_HASH
, output
->ovs_flow_hash
))
1555 goto nla_put_failure
;
1557 if (nla_put_u32(skb
, OVS_KEY_ATTR_PRIORITY
, output
->phy
.priority
))
1558 goto nla_put_failure
;
1560 if ((swkey
->tun_proto
|| is_mask
)) {
1561 const void *opts
= NULL
;
1563 if (output
->tun_key
.tun_flags
& TUNNEL_OPTIONS_PRESENT
)
1564 opts
= TUN_METADATA_OPTS(output
, swkey
->tun_opts_len
);
1566 if (ip_tun_to_nlattr(skb
, &output
->tun_key
, opts
,
1567 swkey
->tun_opts_len
, swkey
->tun_proto
))
1568 goto nla_put_failure
;
1571 if (swkey
->phy
.in_port
== DP_MAX_PORTS
) {
1572 if (is_mask
&& (output
->phy
.in_port
== 0xffff))
1573 if (nla_put_u32(skb
, OVS_KEY_ATTR_IN_PORT
, 0xffffffff))
1574 goto nla_put_failure
;
1577 upper_u16
= !is_mask
? 0 : 0xffff;
1579 if (nla_put_u32(skb
, OVS_KEY_ATTR_IN_PORT
,
1580 (upper_u16
<< 16) | output
->phy
.in_port
))
1581 goto nla_put_failure
;
1584 if (nla_put_u32(skb
, OVS_KEY_ATTR_SKB_MARK
, output
->phy
.skb_mark
))
1585 goto nla_put_failure
;
1587 if (ovs_ct_put_key(output
, skb
))
1588 goto nla_put_failure
;
1590 if (ovs_key_mac_proto(swkey
) == MAC_PROTO_ETHERNET
) {
1591 nla
= nla_reserve(skb
, OVS_KEY_ATTR_ETHERNET
, sizeof(*eth_key
));
1593 goto nla_put_failure
;
1595 eth_key
= nla_data(nla
);
1596 ether_addr_copy(eth_key
->eth_src
, output
->eth
.src
);
1597 ether_addr_copy(eth_key
->eth_dst
, output
->eth
.dst
);
1599 if (swkey
->eth
.vlan
.tci
|| eth_type_vlan(swkey
->eth
.type
)) {
1600 if (ovs_nla_put_vlan(skb
, &output
->eth
.vlan
, is_mask
))
1601 goto nla_put_failure
;
1602 encap
= nla_nest_start(skb
, OVS_KEY_ATTR_ENCAP
);
1603 if (!swkey
->eth
.vlan
.tci
)
1606 if (swkey
->eth
.cvlan
.tci
|| eth_type_vlan(swkey
->eth
.type
)) {
1607 if (ovs_nla_put_vlan(skb
, &output
->eth
.cvlan
, is_mask
))
1608 goto nla_put_failure
;
1609 in_encap
= nla_nest_start(skb
, OVS_KEY_ATTR_ENCAP
);
1610 if (!swkey
->eth
.cvlan
.tci
)
1615 if (swkey
->eth
.type
== htons(ETH_P_802_2
)) {
1617 * Ethertype 802.2 is represented in the netlink with omitted
1618 * OVS_KEY_ATTR_ETHERTYPE in the flow key attribute, and
1619 * 0xffff in the mask attribute. Ethertype can also
1622 if (is_mask
&& output
->eth
.type
)
1623 if (nla_put_be16(skb
, OVS_KEY_ATTR_ETHERTYPE
,
1625 goto nla_put_failure
;
1630 if (nla_put_be16(skb
, OVS_KEY_ATTR_ETHERTYPE
, output
->eth
.type
))
1631 goto nla_put_failure
;
1633 if (eth_type_vlan(swkey
->eth
.type
)) {
1634 /* There are 3 VLAN tags, we don't know anything about the rest
1635 * of the packet, so truncate here.
1637 WARN_ON_ONCE(!(encap
&& in_encap
));
1641 if (swkey
->eth
.type
== htons(ETH_P_IP
)) {
1642 struct ovs_key_ipv4
*ipv4_key
;
1644 nla
= nla_reserve(skb
, OVS_KEY_ATTR_IPV4
, sizeof(*ipv4_key
));
1646 goto nla_put_failure
;
1647 ipv4_key
= nla_data(nla
);
1648 ipv4_key
->ipv4_src
= output
->ipv4
.addr
.src
;
1649 ipv4_key
->ipv4_dst
= output
->ipv4
.addr
.dst
;
1650 ipv4_key
->ipv4_proto
= output
->ip
.proto
;
1651 ipv4_key
->ipv4_tos
= output
->ip
.tos
;
1652 ipv4_key
->ipv4_ttl
= output
->ip
.ttl
;
1653 ipv4_key
->ipv4_frag
= output
->ip
.frag
;
1654 } else if (swkey
->eth
.type
== htons(ETH_P_IPV6
)) {
1655 struct ovs_key_ipv6
*ipv6_key
;
1657 nla
= nla_reserve(skb
, OVS_KEY_ATTR_IPV6
, sizeof(*ipv6_key
));
1659 goto nla_put_failure
;
1660 ipv6_key
= nla_data(nla
);
1661 memcpy(ipv6_key
->ipv6_src
, &output
->ipv6
.addr
.src
,
1662 sizeof(ipv6_key
->ipv6_src
));
1663 memcpy(ipv6_key
->ipv6_dst
, &output
->ipv6
.addr
.dst
,
1664 sizeof(ipv6_key
->ipv6_dst
));
1665 ipv6_key
->ipv6_label
= output
->ipv6
.label
;
1666 ipv6_key
->ipv6_proto
= output
->ip
.proto
;
1667 ipv6_key
->ipv6_tclass
= output
->ip
.tos
;
1668 ipv6_key
->ipv6_hlimit
= output
->ip
.ttl
;
1669 ipv6_key
->ipv6_frag
= output
->ip
.frag
;
1670 } else if (swkey
->eth
.type
== htons(ETH_P_ARP
) ||
1671 swkey
->eth
.type
== htons(ETH_P_RARP
)) {
1672 struct ovs_key_arp
*arp_key
;
1674 nla
= nla_reserve(skb
, OVS_KEY_ATTR_ARP
, sizeof(*arp_key
));
1676 goto nla_put_failure
;
1677 arp_key
= nla_data(nla
);
1678 memset(arp_key
, 0, sizeof(struct ovs_key_arp
));
1679 arp_key
->arp_sip
= output
->ipv4
.addr
.src
;
1680 arp_key
->arp_tip
= output
->ipv4
.addr
.dst
;
1681 arp_key
->arp_op
= htons(output
->ip
.proto
);
1682 ether_addr_copy(arp_key
->arp_sha
, output
->ipv4
.arp
.sha
);
1683 ether_addr_copy(arp_key
->arp_tha
, output
->ipv4
.arp
.tha
);
1684 } else if (eth_p_mpls(swkey
->eth
.type
)) {
1685 struct ovs_key_mpls
*mpls_key
;
1687 nla
= nla_reserve(skb
, OVS_KEY_ATTR_MPLS
, sizeof(*mpls_key
));
1689 goto nla_put_failure
;
1690 mpls_key
= nla_data(nla
);
1691 mpls_key
->mpls_lse
= output
->mpls
.top_lse
;
1694 if ((swkey
->eth
.type
== htons(ETH_P_IP
) ||
1695 swkey
->eth
.type
== htons(ETH_P_IPV6
)) &&
1696 swkey
->ip
.frag
!= OVS_FRAG_TYPE_LATER
) {
1698 if (swkey
->ip
.proto
== IPPROTO_TCP
) {
1699 struct ovs_key_tcp
*tcp_key
;
1701 nla
= nla_reserve(skb
, OVS_KEY_ATTR_TCP
, sizeof(*tcp_key
));
1703 goto nla_put_failure
;
1704 tcp_key
= nla_data(nla
);
1705 tcp_key
->tcp_src
= output
->tp
.src
;
1706 tcp_key
->tcp_dst
= output
->tp
.dst
;
1707 if (nla_put_be16(skb
, OVS_KEY_ATTR_TCP_FLAGS
,
1709 goto nla_put_failure
;
1710 } else if (swkey
->ip
.proto
== IPPROTO_UDP
) {
1711 struct ovs_key_udp
*udp_key
;
1713 nla
= nla_reserve(skb
, OVS_KEY_ATTR_UDP
, sizeof(*udp_key
));
1715 goto nla_put_failure
;
1716 udp_key
= nla_data(nla
);
1717 udp_key
->udp_src
= output
->tp
.src
;
1718 udp_key
->udp_dst
= output
->tp
.dst
;
1719 } else if (swkey
->ip
.proto
== IPPROTO_SCTP
) {
1720 struct ovs_key_sctp
*sctp_key
;
1722 nla
= nla_reserve(skb
, OVS_KEY_ATTR_SCTP
, sizeof(*sctp_key
));
1724 goto nla_put_failure
;
1725 sctp_key
= nla_data(nla
);
1726 sctp_key
->sctp_src
= output
->tp
.src
;
1727 sctp_key
->sctp_dst
= output
->tp
.dst
;
1728 } else if (swkey
->eth
.type
== htons(ETH_P_IP
) &&
1729 swkey
->ip
.proto
== IPPROTO_ICMP
) {
1730 struct ovs_key_icmp
*icmp_key
;
1732 nla
= nla_reserve(skb
, OVS_KEY_ATTR_ICMP
, sizeof(*icmp_key
));
1734 goto nla_put_failure
;
1735 icmp_key
= nla_data(nla
);
1736 icmp_key
->icmp_type
= ntohs(output
->tp
.src
);
1737 icmp_key
->icmp_code
= ntohs(output
->tp
.dst
);
1738 } else if (swkey
->eth
.type
== htons(ETH_P_IPV6
) &&
1739 swkey
->ip
.proto
== IPPROTO_ICMPV6
) {
1740 struct ovs_key_icmpv6
*icmpv6_key
;
1742 nla
= nla_reserve(skb
, OVS_KEY_ATTR_ICMPV6
,
1743 sizeof(*icmpv6_key
));
1745 goto nla_put_failure
;
1746 icmpv6_key
= nla_data(nla
);
1747 icmpv6_key
->icmpv6_type
= ntohs(output
->tp
.src
);
1748 icmpv6_key
->icmpv6_code
= ntohs(output
->tp
.dst
);
1750 if (icmpv6_key
->icmpv6_type
== NDISC_NEIGHBOUR_SOLICITATION
||
1751 icmpv6_key
->icmpv6_type
== NDISC_NEIGHBOUR_ADVERTISEMENT
) {
1752 struct ovs_key_nd
*nd_key
;
1754 nla
= nla_reserve(skb
, OVS_KEY_ATTR_ND
, sizeof(*nd_key
));
1756 goto nla_put_failure
;
1757 nd_key
= nla_data(nla
);
1758 memcpy(nd_key
->nd_target
, &output
->ipv6
.nd
.target
,
1759 sizeof(nd_key
->nd_target
));
1760 ether_addr_copy(nd_key
->nd_sll
, output
->ipv6
.nd
.sll
);
1761 ether_addr_copy(nd_key
->nd_tll
, output
->ipv6
.nd
.tll
);
1768 nla_nest_end(skb
, in_encap
);
1770 nla_nest_end(skb
, encap
);
1778 int ovs_nla_put_key(const struct sw_flow_key
*swkey
,
1779 const struct sw_flow_key
*output
, int attr
, bool is_mask
,
1780 struct sk_buff
*skb
)
1785 nla
= nla_nest_start(skb
, attr
);
1788 err
= __ovs_nla_put_key(swkey
, output
, is_mask
, skb
);
1791 nla_nest_end(skb
, nla
);
1796 /* Called with ovs_mutex or RCU read lock. */
1797 int ovs_nla_put_identifier(const struct sw_flow
*flow
, struct sk_buff
*skb
)
1799 if (ovs_identifier_is_ufid(&flow
->id
))
1800 return nla_put(skb
, OVS_FLOW_ATTR_UFID
, flow
->id
.ufid_len
,
1803 return ovs_nla_put_key(flow
->id
.unmasked_key
, flow
->id
.unmasked_key
,
1804 OVS_FLOW_ATTR_KEY
, false, skb
);
1807 /* Called with ovs_mutex or RCU read lock. */
1808 int ovs_nla_put_masked_key(const struct sw_flow
*flow
, struct sk_buff
*skb
)
1810 return ovs_nla_put_key(&flow
->key
, &flow
->key
,
1811 OVS_FLOW_ATTR_KEY
, false, skb
);
1814 /* Called with ovs_mutex or RCU read lock. */
1815 int ovs_nla_put_mask(const struct sw_flow
*flow
, struct sk_buff
*skb
)
1817 return ovs_nla_put_key(&flow
->key
, &flow
->mask
->key
,
1818 OVS_FLOW_ATTR_MASK
, true, skb
);
1821 #define MAX_ACTIONS_BUFSIZE (32 * 1024)
1823 static struct sw_flow_actions
*nla_alloc_flow_actions(int size
, bool log
)
1825 struct sw_flow_actions
*sfa
;
1827 if (size
> MAX_ACTIONS_BUFSIZE
) {
1828 OVS_NLERR(log
, "Flow action size %u bytes exceeds max", size
);
1829 return ERR_PTR(-EINVAL
);
1832 sfa
= kmalloc(sizeof(*sfa
) + size
, GFP_KERNEL
);
1834 return ERR_PTR(-ENOMEM
);
1836 sfa
->actions_len
= 0;
1840 static void ovs_nla_free_set_action(const struct nlattr
*a
)
1842 const struct nlattr
*ovs_key
= nla_data(a
);
1843 struct ovs_tunnel_info
*ovs_tun
;
1845 switch (nla_type(ovs_key
)) {
1846 case OVS_KEY_ATTR_TUNNEL_INFO
:
1847 ovs_tun
= nla_data(ovs_key
);
1848 dst_release((struct dst_entry
*)ovs_tun
->tun_dst
);
1853 void ovs_nla_free_flow_actions(struct sw_flow_actions
*sf_acts
)
1855 const struct nlattr
*a
;
1861 nla_for_each_attr(a
, sf_acts
->actions
, sf_acts
->actions_len
, rem
) {
1862 switch (nla_type(a
)) {
1863 case OVS_ACTION_ATTR_SET
:
1864 ovs_nla_free_set_action(a
);
1866 case OVS_ACTION_ATTR_CT
:
1867 ovs_ct_free_action(a
);
1875 static void __ovs_nla_free_flow_actions(struct rcu_head
*head
)
1877 ovs_nla_free_flow_actions(container_of(head
, struct sw_flow_actions
, rcu
));
1880 /* Schedules 'sf_acts' to be freed after the next RCU grace period.
1881 * The caller must hold rcu_read_lock for this to be sensible. */
1882 void ovs_nla_free_flow_actions_rcu(struct sw_flow_actions
*sf_acts
)
1884 call_rcu(&sf_acts
->rcu
, __ovs_nla_free_flow_actions
);
1887 static struct nlattr
*reserve_sfa_size(struct sw_flow_actions
**sfa
,
1888 int attr_len
, bool log
)
1891 struct sw_flow_actions
*acts
;
1893 int req_size
= NLA_ALIGN(attr_len
);
1894 int next_offset
= offsetof(struct sw_flow_actions
, actions
) +
1895 (*sfa
)->actions_len
;
1897 if (req_size
<= (ksize(*sfa
) - next_offset
))
1900 new_acts_size
= ksize(*sfa
) * 2;
1902 if (new_acts_size
> MAX_ACTIONS_BUFSIZE
) {
1903 if ((MAX_ACTIONS_BUFSIZE
- next_offset
) < req_size
)
1904 return ERR_PTR(-EMSGSIZE
);
1905 new_acts_size
= MAX_ACTIONS_BUFSIZE
;
1908 acts
= nla_alloc_flow_actions(new_acts_size
, log
);
1910 return (void *)acts
;
1912 memcpy(acts
->actions
, (*sfa
)->actions
, (*sfa
)->actions_len
);
1913 acts
->actions_len
= (*sfa
)->actions_len
;
1914 acts
->orig_len
= (*sfa
)->orig_len
;
1919 (*sfa
)->actions_len
+= req_size
;
1920 return (struct nlattr
*) ((unsigned char *)(*sfa
) + next_offset
);
1923 static struct nlattr
*__add_action(struct sw_flow_actions
**sfa
,
1924 int attrtype
, void *data
, int len
, bool log
)
1928 a
= reserve_sfa_size(sfa
, nla_attr_size(len
), log
);
1932 a
->nla_type
= attrtype
;
1933 a
->nla_len
= nla_attr_size(len
);
1936 memcpy(nla_data(a
), data
, len
);
1937 memset((unsigned char *) a
+ a
->nla_len
, 0, nla_padlen(len
));
1942 int ovs_nla_add_action(struct sw_flow_actions
**sfa
, int attrtype
, void *data
,
1947 a
= __add_action(sfa
, attrtype
, data
, len
, log
);
1949 return PTR_ERR_OR_ZERO(a
);
1952 static inline int add_nested_action_start(struct sw_flow_actions
**sfa
,
1953 int attrtype
, bool log
)
1955 int used
= (*sfa
)->actions_len
;
1958 err
= ovs_nla_add_action(sfa
, attrtype
, NULL
, 0, log
);
1965 static inline void add_nested_action_end(struct sw_flow_actions
*sfa
,
1968 struct nlattr
*a
= (struct nlattr
*) ((unsigned char *)sfa
->actions
+
1971 a
->nla_len
= sfa
->actions_len
- st_offset
;
1974 static int __ovs_nla_copy_actions(struct net
*net
, const struct nlattr
*attr
,
1975 const struct sw_flow_key
*key
,
1976 int depth
, struct sw_flow_actions
**sfa
,
1977 __be16 eth_type
, __be16 vlan_tci
, bool log
);
1979 static int validate_and_copy_sample(struct net
*net
, const struct nlattr
*attr
,
1980 const struct sw_flow_key
*key
, int depth
,
1981 struct sw_flow_actions
**sfa
,
1982 __be16 eth_type
, __be16 vlan_tci
, bool log
)
1984 const struct nlattr
*attrs
[OVS_SAMPLE_ATTR_MAX
+ 1];
1985 const struct nlattr
*probability
, *actions
;
1986 const struct nlattr
*a
;
1987 int rem
, start
, err
, st_acts
;
1989 memset(attrs
, 0, sizeof(attrs
));
1990 nla_for_each_nested(a
, attr
, rem
) {
1991 int type
= nla_type(a
);
1992 if (!type
|| type
> OVS_SAMPLE_ATTR_MAX
|| attrs
[type
])
1999 probability
= attrs
[OVS_SAMPLE_ATTR_PROBABILITY
];
2000 if (!probability
|| nla_len(probability
) != sizeof(u32
))
2003 actions
= attrs
[OVS_SAMPLE_ATTR_ACTIONS
];
2004 if (!actions
|| (nla_len(actions
) && nla_len(actions
) < NLA_HDRLEN
))
2007 /* validation done, copy sample action. */
2008 start
= add_nested_action_start(sfa
, OVS_ACTION_ATTR_SAMPLE
, log
);
2011 err
= ovs_nla_add_action(sfa
, OVS_SAMPLE_ATTR_PROBABILITY
,
2012 nla_data(probability
), sizeof(u32
), log
);
2015 st_acts
= add_nested_action_start(sfa
, OVS_SAMPLE_ATTR_ACTIONS
, log
);
2019 err
= __ovs_nla_copy_actions(net
, actions
, key
, depth
+ 1, sfa
,
2020 eth_type
, vlan_tci
, log
);
2024 add_nested_action_end(*sfa
, st_acts
);
2025 add_nested_action_end(*sfa
, start
);
2030 void ovs_match_init(struct sw_flow_match
*match
,
2031 struct sw_flow_key
*key
,
2033 struct sw_flow_mask
*mask
)
2035 memset(match
, 0, sizeof(*match
));
2040 memset(key
, 0, sizeof(*key
));
2043 memset(&mask
->key
, 0, sizeof(mask
->key
));
2044 mask
->range
.start
= mask
->range
.end
= 0;
2048 static int validate_geneve_opts(struct sw_flow_key
*key
)
2050 struct geneve_opt
*option
;
2051 int opts_len
= key
->tun_opts_len
;
2052 bool crit_opt
= false;
2054 option
= (struct geneve_opt
*)TUN_METADATA_OPTS(key
, key
->tun_opts_len
);
2055 while (opts_len
> 0) {
2058 if (opts_len
< sizeof(*option
))
2061 len
= sizeof(*option
) + option
->length
* 4;
2065 crit_opt
|= !!(option
->type
& GENEVE_CRIT_OPT_TYPE
);
2067 option
= (struct geneve_opt
*)((u8
*)option
+ len
);
2071 key
->tun_key
.tun_flags
|= crit_opt
? TUNNEL_CRIT_OPT
: 0;
2076 static int validate_and_copy_set_tun(const struct nlattr
*attr
,
2077 struct sw_flow_actions
**sfa
, bool log
)
2079 struct sw_flow_match match
;
2080 struct sw_flow_key key
;
2081 struct metadata_dst
*tun_dst
;
2082 struct ip_tunnel_info
*tun_info
;
2083 struct ovs_tunnel_info
*ovs_tun
;
2085 int err
= 0, start
, opts_type
;
2087 ovs_match_init(&match
, &key
, true, NULL
);
2088 opts_type
= ip_tun_from_nlattr(nla_data(attr
), &match
, false, log
);
2092 if (key
.tun_opts_len
) {
2093 switch (opts_type
) {
2094 case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS
:
2095 err
= validate_geneve_opts(&key
);
2099 case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS
:
2104 start
= add_nested_action_start(sfa
, OVS_ACTION_ATTR_SET
, log
);
2108 tun_dst
= metadata_dst_alloc(key
.tun_opts_len
, GFP_KERNEL
);
2112 err
= dst_cache_init(&tun_dst
->u
.tun_info
.dst_cache
, GFP_KERNEL
);
2114 dst_release((struct dst_entry
*)tun_dst
);
2118 a
= __add_action(sfa
, OVS_KEY_ATTR_TUNNEL_INFO
, NULL
,
2119 sizeof(*ovs_tun
), log
);
2121 dst_release((struct dst_entry
*)tun_dst
);
2125 ovs_tun
= nla_data(a
);
2126 ovs_tun
->tun_dst
= tun_dst
;
2128 tun_info
= &tun_dst
->u
.tun_info
;
2129 tun_info
->mode
= IP_TUNNEL_INFO_TX
;
2130 if (key
.tun_proto
== AF_INET6
)
2131 tun_info
->mode
|= IP_TUNNEL_INFO_IPV6
;
2132 tun_info
->key
= key
.tun_key
;
2134 /* We need to store the options in the action itself since
2135 * everything else will go away after flow setup. We can append
2136 * it to tun_info and then point there.
2138 ip_tunnel_info_opts_set(tun_info
,
2139 TUN_METADATA_OPTS(&key
, key
.tun_opts_len
),
2141 add_nested_action_end(*sfa
, start
);
2146 /* Return false if there are any non-masked bits set.
2147 * Mask follows data immediately, before any netlink padding.
2149 static bool validate_masked(u8
*data
, int len
)
2151 u8
*mask
= data
+ len
;
2154 if (*data
++ & ~*mask
++)
2160 static int validate_set(const struct nlattr
*a
,
2161 const struct sw_flow_key
*flow_key
,
2162 struct sw_flow_actions
**sfa
, bool *skip_copy
,
2163 u8 mac_proto
, __be16 eth_type
, bool masked
, bool log
)
2165 const struct nlattr
*ovs_key
= nla_data(a
);
2166 int key_type
= nla_type(ovs_key
);
2169 /* There can be only one key in a action */
2170 if (nla_total_size(nla_len(ovs_key
)) != nla_len(a
))
2173 key_len
= nla_len(ovs_key
);
2177 if (key_type
> OVS_KEY_ATTR_MAX
||
2178 !check_attr_len(key_len
, ovs_key_lens
[key_type
].len
))
2181 if (masked
&& !validate_masked(nla_data(ovs_key
), key_len
))
2185 const struct ovs_key_ipv4
*ipv4_key
;
2186 const struct ovs_key_ipv6
*ipv6_key
;
2189 case OVS_KEY_ATTR_PRIORITY
:
2190 case OVS_KEY_ATTR_SKB_MARK
:
2191 case OVS_KEY_ATTR_CT_MARK
:
2192 case OVS_KEY_ATTR_CT_LABELS
:
2195 case OVS_KEY_ATTR_ETHERNET
:
2196 if (mac_proto
!= MAC_PROTO_ETHERNET
)
2200 case OVS_KEY_ATTR_TUNNEL
:
2202 return -EINVAL
; /* Masked tunnel set not supported. */
2205 err
= validate_and_copy_set_tun(a
, sfa
, log
);
2210 case OVS_KEY_ATTR_IPV4
:
2211 if (eth_type
!= htons(ETH_P_IP
))
2214 ipv4_key
= nla_data(ovs_key
);
2217 const struct ovs_key_ipv4
*mask
= ipv4_key
+ 1;
2219 /* Non-writeable fields. */
2220 if (mask
->ipv4_proto
|| mask
->ipv4_frag
)
2223 if (ipv4_key
->ipv4_proto
!= flow_key
->ip
.proto
)
2226 if (ipv4_key
->ipv4_frag
!= flow_key
->ip
.frag
)
2231 case OVS_KEY_ATTR_IPV6
:
2232 if (eth_type
!= htons(ETH_P_IPV6
))
2235 ipv6_key
= nla_data(ovs_key
);
2238 const struct ovs_key_ipv6
*mask
= ipv6_key
+ 1;
2240 /* Non-writeable fields. */
2241 if (mask
->ipv6_proto
|| mask
->ipv6_frag
)
2244 /* Invalid bits in the flow label mask? */
2245 if (ntohl(mask
->ipv6_label
) & 0xFFF00000)
2248 if (ipv6_key
->ipv6_proto
!= flow_key
->ip
.proto
)
2251 if (ipv6_key
->ipv6_frag
!= flow_key
->ip
.frag
)
2254 if (ntohl(ipv6_key
->ipv6_label
) & 0xFFF00000)
2259 case OVS_KEY_ATTR_TCP
:
2260 if ((eth_type
!= htons(ETH_P_IP
) &&
2261 eth_type
!= htons(ETH_P_IPV6
)) ||
2262 flow_key
->ip
.proto
!= IPPROTO_TCP
)
2267 case OVS_KEY_ATTR_UDP
:
2268 if ((eth_type
!= htons(ETH_P_IP
) &&
2269 eth_type
!= htons(ETH_P_IPV6
)) ||
2270 flow_key
->ip
.proto
!= IPPROTO_UDP
)
2275 case OVS_KEY_ATTR_MPLS
:
2276 if (!eth_p_mpls(eth_type
))
2280 case OVS_KEY_ATTR_SCTP
:
2281 if ((eth_type
!= htons(ETH_P_IP
) &&
2282 eth_type
!= htons(ETH_P_IPV6
)) ||
2283 flow_key
->ip
.proto
!= IPPROTO_SCTP
)
2292 /* Convert non-masked non-tunnel set actions to masked set actions. */
2293 if (!masked
&& key_type
!= OVS_KEY_ATTR_TUNNEL
) {
2294 int start
, len
= key_len
* 2;
2299 start
= add_nested_action_start(sfa
,
2300 OVS_ACTION_ATTR_SET_TO_MASKED
,
2305 at
= __add_action(sfa
, key_type
, NULL
, len
, log
);
2309 memcpy(nla_data(at
), nla_data(ovs_key
), key_len
); /* Key. */
2310 memset(nla_data(at
) + key_len
, 0xff, key_len
); /* Mask. */
2311 /* Clear non-writeable bits from otherwise writeable fields. */
2312 if (key_type
== OVS_KEY_ATTR_IPV6
) {
2313 struct ovs_key_ipv6
*mask
= nla_data(at
) + key_len
;
2315 mask
->ipv6_label
&= htonl(0x000FFFFF);
2317 add_nested_action_end(*sfa
, start
);
2323 static int validate_userspace(const struct nlattr
*attr
)
2325 static const struct nla_policy userspace_policy
[OVS_USERSPACE_ATTR_MAX
+ 1] = {
2326 [OVS_USERSPACE_ATTR_PID
] = {.type
= NLA_U32
},
2327 [OVS_USERSPACE_ATTR_USERDATA
] = {.type
= NLA_UNSPEC
},
2328 [OVS_USERSPACE_ATTR_EGRESS_TUN_PORT
] = {.type
= NLA_U32
},
2330 struct nlattr
*a
[OVS_USERSPACE_ATTR_MAX
+ 1];
2333 error
= nla_parse_nested(a
, OVS_USERSPACE_ATTR_MAX
,
2334 attr
, userspace_policy
);
2338 if (!a
[OVS_USERSPACE_ATTR_PID
] ||
2339 !nla_get_u32(a
[OVS_USERSPACE_ATTR_PID
]))
2345 static int copy_action(const struct nlattr
*from
,
2346 struct sw_flow_actions
**sfa
, bool log
)
2348 int totlen
= NLA_ALIGN(from
->nla_len
);
2351 to
= reserve_sfa_size(sfa
, from
->nla_len
, log
);
2355 memcpy(to
, from
, totlen
);
2359 static int __ovs_nla_copy_actions(struct net
*net
, const struct nlattr
*attr
,
2360 const struct sw_flow_key
*key
,
2361 int depth
, struct sw_flow_actions
**sfa
,
2362 __be16 eth_type
, __be16 vlan_tci
, bool log
)
2364 u8 mac_proto
= ovs_key_mac_proto(key
);
2365 const struct nlattr
*a
;
2368 if (depth
>= SAMPLE_ACTION_DEPTH
)
2371 nla_for_each_nested(a
, attr
, rem
) {
2372 /* Expected argument lengths, (u32)-1 for variable length. */
2373 static const u32 action_lens
[OVS_ACTION_ATTR_MAX
+ 1] = {
2374 [OVS_ACTION_ATTR_OUTPUT
] = sizeof(u32
),
2375 [OVS_ACTION_ATTR_RECIRC
] = sizeof(u32
),
2376 [OVS_ACTION_ATTR_USERSPACE
] = (u32
)-1,
2377 [OVS_ACTION_ATTR_PUSH_MPLS
] = sizeof(struct ovs_action_push_mpls
),
2378 [OVS_ACTION_ATTR_POP_MPLS
] = sizeof(__be16
),
2379 [OVS_ACTION_ATTR_PUSH_VLAN
] = sizeof(struct ovs_action_push_vlan
),
2380 [OVS_ACTION_ATTR_POP_VLAN
] = 0,
2381 [OVS_ACTION_ATTR_SET
] = (u32
)-1,
2382 [OVS_ACTION_ATTR_SET_MASKED
] = (u32
)-1,
2383 [OVS_ACTION_ATTR_SAMPLE
] = (u32
)-1,
2384 [OVS_ACTION_ATTR_HASH
] = sizeof(struct ovs_action_hash
),
2385 [OVS_ACTION_ATTR_CT
] = (u32
)-1,
2386 [OVS_ACTION_ATTR_TRUNC
] = sizeof(struct ovs_action_trunc
),
2387 [OVS_ACTION_ATTR_PUSH_ETH
] = sizeof(struct ovs_action_push_eth
),
2388 [OVS_ACTION_ATTR_POP_ETH
] = 0,
2390 const struct ovs_action_push_vlan
*vlan
;
2391 int type
= nla_type(a
);
2394 if (type
> OVS_ACTION_ATTR_MAX
||
2395 (action_lens
[type
] != nla_len(a
) &&
2396 action_lens
[type
] != (u32
)-1))
2401 case OVS_ACTION_ATTR_UNSPEC
:
2404 case OVS_ACTION_ATTR_USERSPACE
:
2405 err
= validate_userspace(a
);
2410 case OVS_ACTION_ATTR_OUTPUT
:
2411 if (nla_get_u32(a
) >= DP_MAX_PORTS
)
2415 case OVS_ACTION_ATTR_TRUNC
: {
2416 const struct ovs_action_trunc
*trunc
= nla_data(a
);
2418 if (trunc
->max_len
< ETH_HLEN
)
2423 case OVS_ACTION_ATTR_HASH
: {
2424 const struct ovs_action_hash
*act_hash
= nla_data(a
);
2426 switch (act_hash
->hash_alg
) {
2427 case OVS_HASH_ALG_L4
:
2436 case OVS_ACTION_ATTR_POP_VLAN
:
2437 if (mac_proto
!= MAC_PROTO_ETHERNET
)
2439 vlan_tci
= htons(0);
2442 case OVS_ACTION_ATTR_PUSH_VLAN
:
2443 if (mac_proto
!= MAC_PROTO_ETHERNET
)
2446 if (!eth_type_vlan(vlan
->vlan_tpid
))
2448 if (!(vlan
->vlan_tci
& htons(VLAN_TAG_PRESENT
)))
2450 vlan_tci
= vlan
->vlan_tci
;
2453 case OVS_ACTION_ATTR_RECIRC
:
2456 case OVS_ACTION_ATTR_PUSH_MPLS
: {
2457 const struct ovs_action_push_mpls
*mpls
= nla_data(a
);
2459 if (!eth_p_mpls(mpls
->mpls_ethertype
))
2461 /* Prohibit push MPLS other than to a white list
2462 * for packets that have a known tag order.
2464 if (vlan_tci
& htons(VLAN_TAG_PRESENT
) ||
2465 (eth_type
!= htons(ETH_P_IP
) &&
2466 eth_type
!= htons(ETH_P_IPV6
) &&
2467 eth_type
!= htons(ETH_P_ARP
) &&
2468 eth_type
!= htons(ETH_P_RARP
) &&
2469 !eth_p_mpls(eth_type
)))
2471 eth_type
= mpls
->mpls_ethertype
;
2475 case OVS_ACTION_ATTR_POP_MPLS
:
2476 if (vlan_tci
& htons(VLAN_TAG_PRESENT
) ||
2477 !eth_p_mpls(eth_type
))
2480 /* Disallow subsequent L2.5+ set and mpls_pop actions
2481 * as there is no check here to ensure that the new
2482 * eth_type is valid and thus set actions could
2483 * write off the end of the packet or otherwise
2486 * Support for these actions is planned using packet
2489 eth_type
= htons(0);
2492 case OVS_ACTION_ATTR_SET
:
2493 err
= validate_set(a
, key
, sfa
,
2494 &skip_copy
, mac_proto
, eth_type
,
2500 case OVS_ACTION_ATTR_SET_MASKED
:
2501 err
= validate_set(a
, key
, sfa
,
2502 &skip_copy
, mac_proto
, eth_type
,
2508 case OVS_ACTION_ATTR_SAMPLE
:
2509 err
= validate_and_copy_sample(net
, a
, key
, depth
, sfa
,
2510 eth_type
, vlan_tci
, log
);
2516 case OVS_ACTION_ATTR_CT
:
2517 err
= ovs_ct_copy_action(net
, a
, key
, sfa
, log
);
2523 case OVS_ACTION_ATTR_PUSH_ETH
:
2524 /* Disallow pushing an Ethernet header if one
2525 * is already present */
2526 if (mac_proto
!= MAC_PROTO_NONE
)
2528 mac_proto
= MAC_PROTO_NONE
;
2531 case OVS_ACTION_ATTR_POP_ETH
:
2532 if (mac_proto
!= MAC_PROTO_ETHERNET
)
2534 if (vlan_tci
& htons(VLAN_TAG_PRESENT
))
2536 mac_proto
= MAC_PROTO_ETHERNET
;
2540 OVS_NLERR(log
, "Unknown Action type %d", type
);
2544 err
= copy_action(a
, sfa
, log
);
2556 /* 'key' must be the masked key. */
2557 int ovs_nla_copy_actions(struct net
*net
, const struct nlattr
*attr
,
2558 const struct sw_flow_key
*key
,
2559 struct sw_flow_actions
**sfa
, bool log
)
2563 *sfa
= nla_alloc_flow_actions(nla_len(attr
), log
);
2565 return PTR_ERR(*sfa
);
2567 (*sfa
)->orig_len
= nla_len(attr
);
2568 err
= __ovs_nla_copy_actions(net
, attr
, key
, 0, sfa
, key
->eth
.type
,
2569 key
->eth
.vlan
.tci
, log
);
2571 ovs_nla_free_flow_actions(*sfa
);
2576 static int sample_action_to_attr(const struct nlattr
*attr
, struct sk_buff
*skb
)
2578 const struct nlattr
*a
;
2579 struct nlattr
*start
;
2582 start
= nla_nest_start(skb
, OVS_ACTION_ATTR_SAMPLE
);
2586 nla_for_each_nested(a
, attr
, rem
) {
2587 int type
= nla_type(a
);
2588 struct nlattr
*st_sample
;
2591 case OVS_SAMPLE_ATTR_PROBABILITY
:
2592 if (nla_put(skb
, OVS_SAMPLE_ATTR_PROBABILITY
,
2593 sizeof(u32
), nla_data(a
)))
2596 case OVS_SAMPLE_ATTR_ACTIONS
:
2597 st_sample
= nla_nest_start(skb
, OVS_SAMPLE_ATTR_ACTIONS
);
2600 err
= ovs_nla_put_actions(nla_data(a
), nla_len(a
), skb
);
2603 nla_nest_end(skb
, st_sample
);
2608 nla_nest_end(skb
, start
);
2612 static int set_action_to_attr(const struct nlattr
*a
, struct sk_buff
*skb
)
2614 const struct nlattr
*ovs_key
= nla_data(a
);
2615 int key_type
= nla_type(ovs_key
);
2616 struct nlattr
*start
;
2620 case OVS_KEY_ATTR_TUNNEL_INFO
: {
2621 struct ovs_tunnel_info
*ovs_tun
= nla_data(ovs_key
);
2622 struct ip_tunnel_info
*tun_info
= &ovs_tun
->tun_dst
->u
.tun_info
;
2624 start
= nla_nest_start(skb
, OVS_ACTION_ATTR_SET
);
2628 err
= ip_tun_to_nlattr(skb
, &tun_info
->key
,
2629 ip_tunnel_info_opts(tun_info
),
2630 tun_info
->options_len
,
2631 ip_tunnel_info_af(tun_info
));
2634 nla_nest_end(skb
, start
);
2638 if (nla_put(skb
, OVS_ACTION_ATTR_SET
, nla_len(a
), ovs_key
))
2646 static int masked_set_action_to_set_action_attr(const struct nlattr
*a
,
2647 struct sk_buff
*skb
)
2649 const struct nlattr
*ovs_key
= nla_data(a
);
2651 size_t key_len
= nla_len(ovs_key
) / 2;
2653 /* Revert the conversion we did from a non-masked set action to
2654 * masked set action.
2656 nla
= nla_nest_start(skb
, OVS_ACTION_ATTR_SET
);
2660 if (nla_put(skb
, nla_type(ovs_key
), key_len
, nla_data(ovs_key
)))
2663 nla_nest_end(skb
, nla
);
2667 int ovs_nla_put_actions(const struct nlattr
*attr
, int len
, struct sk_buff
*skb
)
2669 const struct nlattr
*a
;
2672 nla_for_each_attr(a
, attr
, len
, rem
) {
2673 int type
= nla_type(a
);
2676 case OVS_ACTION_ATTR_SET
:
2677 err
= set_action_to_attr(a
, skb
);
2682 case OVS_ACTION_ATTR_SET_TO_MASKED
:
2683 err
= masked_set_action_to_set_action_attr(a
, skb
);
2688 case OVS_ACTION_ATTR_SAMPLE
:
2689 err
= sample_action_to_attr(a
, skb
);
2694 case OVS_ACTION_ATTR_CT
:
2695 err
= ovs_ct_action_to_attr(nla_data(a
), skb
);
2701 if (nla_put(skb
, type
, nla_len(a
), nla_data(a
)))