2 * Copyright (c) 2010, 2011 Nicira Networks.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
21 #include <netinet/icmp6.h>
23 #include "classifier.h"
24 #include "dynamic-string.h"
27 #include "openflow/nicira-ext.h"
29 #include "unaligned.h"
32 VLOG_DEFINE_THIS_MODULE(nx_match
);
34 /* Rate limit for nx_match parse errors. These always indicate a bug in the
35 * peer and so there's not much point in showing a lot of them. */
36 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
39 NXM_INVALID
= OFP_MKERR_NICIRA(OFPET_BAD_REQUEST
, NXBRC_NXM_INVALID
),
40 NXM_BAD_TYPE
= OFP_MKERR_NICIRA(OFPET_BAD_REQUEST
, NXBRC_NXM_BAD_TYPE
),
41 NXM_BAD_VALUE
= OFP_MKERR_NICIRA(OFPET_BAD_REQUEST
, NXBRC_NXM_BAD_VALUE
),
42 NXM_BAD_MASK
= OFP_MKERR_NICIRA(OFPET_BAD_REQUEST
, NXBRC_NXM_BAD_MASK
),
43 NXM_BAD_PREREQ
= OFP_MKERR_NICIRA(OFPET_BAD_REQUEST
, NXBRC_NXM_BAD_PREREQ
),
44 NXM_DUP_TYPE
= OFP_MKERR_NICIRA(OFPET_BAD_REQUEST
, NXBRC_NXM_DUP_TYPE
),
45 BAD_ARGUMENT
= OFP_MKERR(OFPET_BAD_ACTION
, OFPBAC_BAD_ARGUMENT
)
48 /* For each NXM_* field, define NFI_NXM_* as consecutive integers starting from
50 enum nxm_field_index
{
51 #define DEFINE_FIELD(HEADER, WILDCARD, DL_TYPES, NW_PROTO, WRITABLE) \
53 #include "nx-match.def"
58 struct hmap_node hmap_node
;
59 enum nxm_field_index index
; /* NFI_* value. */
60 uint32_t header
; /* NXM_* value. */
61 flow_wildcards_t wildcard
; /* FWW_* bit, if exactly one. */
62 ovs_be16 dl_type
[N_NXM_DL_TYPES
]; /* dl_type prerequisites. */
63 uint8_t nw_proto
; /* nw_proto prerequisite, if nonzero. */
64 const char *name
; /* "NXM_*" string. */
65 bool writable
; /* Writable with NXAST_REG_{MOVE,LOAD}? */
69 /* All the known fields. */
70 static struct nxm_field nxm_fields
[N_NXM_FIELDS
] = {
71 #define DEFINE_FIELD(HEADER, WILDCARD, DL_TYPES, NW_PROTO, WRITABLE) \
72 { HMAP_NODE_NULL_INITIALIZER, NFI_NXM_##HEADER, NXM_##HEADER, WILDCARD, \
73 DL_CONVERT DL_TYPES, NW_PROTO, "NXM_" #HEADER, WRITABLE },
74 #define DL_CONVERT(T1, T2) { CONSTANT_HTONS(T1), CONSTANT_HTONS(T2) }
75 #include "nx-match.def"
78 /* Hash table of 'nxm_fields'. */
79 static struct hmap all_nxm_fields
= HMAP_INITIALIZER(&all_nxm_fields
);
81 /* Possible masks for NXM_OF_ETH_DST_W. */
82 static const uint8_t eth_all_0s
[ETH_ADDR_LEN
]
83 = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
84 static const uint8_t eth_all_1s
[ETH_ADDR_LEN
]
85 = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
86 static const uint8_t eth_mcast_1
[ETH_ADDR_LEN
]
87 = {0x01, 0x00, 0x00, 0x00, 0x00, 0x00};
88 static const uint8_t eth_mcast_0
[ETH_ADDR_LEN
]
89 = {0xfe, 0xff, 0xff, 0xff, 0xff, 0xff};
94 if (hmap_is_empty(&all_nxm_fields
)) {
97 for (i
= 0; i
< N_NXM_FIELDS
; i
++) {
98 struct nxm_field
*f
= &nxm_fields
[i
];
99 hmap_insert(&all_nxm_fields
, &f
->hmap_node
,
100 hash_int(f
->header
, 0));
103 /* Verify that the header values are unique (duplicate "case" values
104 * cause a compile error). */
106 #define DEFINE_FIELD(HEADER, WILDCARD, DL_TYPE, NW_PROTO, WRITABLE) \
107 case NXM_##HEADER: break;
108 #include "nx-match.def"
113 static const struct nxm_field
*
114 nxm_field_lookup(uint32_t header
)
120 HMAP_FOR_EACH_WITH_HASH (f
, hmap_node
, hash_int(header
, 0),
122 if (f
->header
== header
) {
130 /* Returns the width of the data for a field with the given 'header', in
133 nxm_field_bytes(uint32_t header
)
135 unsigned int length
= NXM_LENGTH(header
);
136 return NXM_HASMASK(header
) ? length
/ 2 : length
;
139 /* Returns the width of the data for a field with the given 'header', in
142 nxm_field_bits(uint32_t header
)
144 return nxm_field_bytes(header
) * 8;
147 /* nx_pull_match() and helpers. */
150 parse_nx_reg(const struct nxm_field
*f
,
151 struct flow
*flow
, struct flow_wildcards
*wc
,
152 const void *value
, const void *maskp
)
154 int idx
= NXM_NX_REG_IDX(f
->header
);
155 if (wc
->reg_masks
[idx
]) {
158 flow_wildcards_set_reg_mask(wc
, idx
,
159 (NXM_HASMASK(f
->header
)
160 ? ntohl(get_unaligned_be32(maskp
))
162 flow
->regs
[idx
] = ntohl(get_unaligned_be32(value
));
163 flow
->regs
[idx
] &= wc
->reg_masks
[idx
];
169 parse_nxm_entry(struct cls_rule
*rule
, const struct nxm_field
*f
,
170 const void *value
, const void *mask
)
172 struct flow_wildcards
*wc
= &rule
->wc
;
173 struct flow
*flow
= &rule
->flow
;
177 case NFI_NXM_OF_IN_PORT
:
178 flow
->in_port
= ntohs(get_unaligned_be16(value
));
181 /* Ethernet header. */
182 case NFI_NXM_OF_ETH_DST
:
183 if ((wc
->wildcards
& (FWW_DL_DST
| FWW_ETH_MCAST
))
184 != (FWW_DL_DST
| FWW_ETH_MCAST
)) {
187 wc
->wildcards
&= ~(FWW_DL_DST
| FWW_ETH_MCAST
);
188 memcpy(flow
->dl_dst
, value
, ETH_ADDR_LEN
);
191 case NFI_NXM_OF_ETH_DST_W
:
192 if ((wc
->wildcards
& (FWW_DL_DST
| FWW_ETH_MCAST
))
193 != (FWW_DL_DST
| FWW_ETH_MCAST
)) {
195 } else if (eth_addr_equals(mask
, eth_mcast_1
)) {
196 wc
->wildcards
&= ~FWW_ETH_MCAST
;
197 flow
->dl_dst
[0] = *(uint8_t *) value
& 0x01;
199 } else if (eth_addr_equals(mask
, eth_mcast_0
)) {
200 wc
->wildcards
&= ~FWW_DL_DST
;
201 memcpy(flow
->dl_dst
, value
, ETH_ADDR_LEN
);
202 flow
->dl_dst
[0] &= 0xfe;
204 } else if (eth_addr_equals(mask
, eth_all_0s
)) {
206 } else if (eth_addr_equals(mask
, eth_all_1s
)) {
207 wc
->wildcards
&= ~(FWW_DL_DST
| FWW_ETH_MCAST
);
208 memcpy(flow
->dl_dst
, value
, ETH_ADDR_LEN
);
213 case NFI_NXM_OF_ETH_SRC
:
214 memcpy(flow
->dl_src
, value
, ETH_ADDR_LEN
);
216 case NFI_NXM_OF_ETH_TYPE
:
217 flow
->dl_type
= ofputil_dl_type_from_openflow(get_unaligned_be16(value
));
221 case NFI_NXM_OF_VLAN_TCI
:
222 if (wc
->vlan_tci_mask
) {
225 cls_rule_set_dl_tci(rule
, get_unaligned_be16(value
));
228 case NFI_NXM_OF_VLAN_TCI_W
:
229 if (wc
->vlan_tci_mask
) {
232 cls_rule_set_dl_tci_masked(rule
, get_unaligned_be16(value
),
233 get_unaligned_be16(mask
));
238 case NFI_NXM_OF_IP_TOS
:
239 if (*(uint8_t *) value
& 0x03) {
240 return NXM_BAD_VALUE
;
242 flow
->nw_tos
= *(uint8_t *) value
;
245 case NFI_NXM_OF_IP_PROTO
:
246 flow
->nw_proto
= *(uint8_t *) value
;
249 /* IP addresses in IP and ARP headers. */
250 case NFI_NXM_OF_IP_SRC
:
251 case NFI_NXM_OF_ARP_SPA
:
252 if (wc
->nw_src_mask
) {
255 cls_rule_set_nw_src(rule
, get_unaligned_be32(value
));
258 case NFI_NXM_OF_IP_SRC_W
:
259 case NFI_NXM_OF_ARP_SPA_W
:
260 if (wc
->nw_src_mask
) {
263 ovs_be32 ip
= get_unaligned_be32(value
);
264 ovs_be32 netmask
= get_unaligned_be32(mask
);
265 if (!cls_rule_set_nw_src_masked(rule
, ip
, netmask
)) {
270 case NFI_NXM_OF_IP_DST
:
271 case NFI_NXM_OF_ARP_TPA
:
272 if (wc
->nw_dst_mask
) {
275 cls_rule_set_nw_dst(rule
, get_unaligned_be32(value
));
278 case NFI_NXM_OF_IP_DST_W
:
279 case NFI_NXM_OF_ARP_TPA_W
:
280 if (wc
->nw_dst_mask
) {
283 ovs_be32 ip
= get_unaligned_be32(value
);
284 ovs_be32 netmask
= get_unaligned_be32(mask
);
285 if (!cls_rule_set_nw_dst_masked(rule
, ip
, netmask
)) {
291 /* IPv6 addresses. */
292 case NFI_NXM_NX_IPV6_SRC
:
293 if (!ipv6_mask_is_any(&wc
->ipv6_src_mask
)) {
296 struct in6_addr ipv6
;
297 memcpy(&ipv6
, value
, sizeof ipv6
);
298 cls_rule_set_ipv6_src(rule
, &ipv6
);
301 case NFI_NXM_NX_IPV6_SRC_W
:
302 if (!ipv6_mask_is_any(&wc
->ipv6_src_mask
)) {
305 struct in6_addr ipv6
, netmask
;
306 memcpy(&ipv6
, value
, sizeof ipv6
);
307 memcpy(&netmask
, mask
, sizeof netmask
);
308 if (!cls_rule_set_ipv6_src_masked(rule
, &ipv6
, &netmask
)) {
313 case NFI_NXM_NX_IPV6_DST
:
314 if (!ipv6_mask_is_any(&wc
->ipv6_dst_mask
)) {
317 struct in6_addr ipv6
;
318 memcpy(&ipv6
, value
, sizeof ipv6
);
319 cls_rule_set_ipv6_dst(rule
, &ipv6
);
322 case NFI_NXM_NX_IPV6_DST_W
:
323 if (!ipv6_mask_is_any(&wc
->ipv6_dst_mask
)) {
326 struct in6_addr ipv6
, netmask
;
327 memcpy(&ipv6
, value
, sizeof ipv6
);
328 memcpy(&netmask
, mask
, sizeof netmask
);
329 if (!cls_rule_set_ipv6_dst_masked(rule
, &ipv6
, &netmask
)) {
336 case NFI_NXM_OF_TCP_SRC
:
337 flow
->tp_src
= get_unaligned_be16(value
);
339 case NFI_NXM_OF_TCP_DST
:
340 flow
->tp_dst
= get_unaligned_be16(value
);
344 case NFI_NXM_OF_UDP_SRC
:
345 flow
->tp_src
= get_unaligned_be16(value
);
347 case NFI_NXM_OF_UDP_DST
:
348 flow
->tp_dst
= get_unaligned_be16(value
);
352 case NFI_NXM_OF_ICMP_TYPE
:
353 flow
->tp_src
= htons(*(uint8_t *) value
);
355 case NFI_NXM_OF_ICMP_CODE
:
356 flow
->tp_dst
= htons(*(uint8_t *) value
);
360 case NFI_NXM_NX_ICMPV6_TYPE
:
361 flow
->tp_src
= htons(*(uint8_t *) value
);
363 case NFI_NXM_NX_ICMPV6_CODE
:
364 flow
->tp_dst
= htons(*(uint8_t *) value
);
367 /* IPv6 Neighbor Discovery. */
368 case NFI_NXM_NX_ND_TARGET
:
369 /* We've already verified that it's an ICMPv6 message. */
370 if ((flow
->tp_src
!= htons(ND_NEIGHBOR_SOLICIT
))
371 && (flow
->tp_src
!= htons(ND_NEIGHBOR_ADVERT
))) {
372 return NXM_BAD_PREREQ
;
374 memcpy(&flow
->nd_target
, value
, sizeof flow
->nd_target
);
376 case NFI_NXM_NX_ND_SLL
:
377 /* We've already verified that it's an ICMPv6 message. */
378 if (flow
->tp_src
!= htons(ND_NEIGHBOR_SOLICIT
)) {
379 return NXM_BAD_PREREQ
;
381 memcpy(flow
->arp_sha
, value
, ETH_ADDR_LEN
);
383 case NFI_NXM_NX_ND_TLL
:
384 /* We've already verified that it's an ICMPv6 message. */
385 if (flow
->tp_src
!= htons(ND_NEIGHBOR_ADVERT
)) {
386 return NXM_BAD_PREREQ
;
388 memcpy(flow
->arp_tha
, value
, ETH_ADDR_LEN
);
392 case NFI_NXM_OF_ARP_OP
:
393 if (ntohs(get_unaligned_be16(value
)) > 255) {
394 return NXM_BAD_VALUE
;
396 flow
->nw_proto
= ntohs(get_unaligned_be16(value
));
400 case NFI_NXM_NX_ARP_SHA
:
401 memcpy(flow
->arp_sha
, value
, ETH_ADDR_LEN
);
403 case NFI_NXM_NX_ARP_THA
:
404 memcpy(flow
->arp_tha
, value
, ETH_ADDR_LEN
);
408 case NFI_NXM_NX_TUN_ID
:
409 if (wc
->tun_id_mask
) {
412 cls_rule_set_tun_id(rule
, get_unaligned_be64(value
));
415 case NFI_NXM_NX_TUN_ID_W
:
416 if (wc
->tun_id_mask
) {
419 ovs_be64 tun_id
= get_unaligned_be64(value
);
420 ovs_be64 tun_mask
= get_unaligned_be64(mask
);
421 cls_rule_set_tun_id_masked(rule
, tun_id
, tun_mask
);
426 case NFI_NXM_NX_REG0
:
427 case NFI_NXM_NX_REG0_W
:
429 case NFI_NXM_NX_REG1
:
430 case NFI_NXM_NX_REG1_W
:
433 case NFI_NXM_NX_REG2
:
434 case NFI_NXM_NX_REG2_W
:
437 case NFI_NXM_NX_REG3
:
438 case NFI_NXM_NX_REG3_W
:
443 return parse_nx_reg(f
, flow
, wc
, value
, mask
);
452 nxm_prereqs_ok(const struct nxm_field
*field
, const struct flow
*flow
)
454 if (field
->nw_proto
&& field
->nw_proto
!= flow
->nw_proto
) {
458 if (!field
->dl_type
[0]) {
460 } else if (field
->dl_type
[0] == flow
->dl_type
) {
462 } else if (field
->dl_type
[1] && field
->dl_type
[1] == flow
->dl_type
) {
470 nx_entry_ok(const void *p
, unsigned int match_len
)
472 unsigned int payload_len
;
478 VLOG_DBG_RL(&rl
, "nx_match ends with partial nxm_header");
482 memcpy(&header_be
, p
, 4);
483 header
= ntohl(header_be
);
485 payload_len
= NXM_LENGTH(header
);
487 VLOG_DBG_RL(&rl
, "nxm_entry %08"PRIx32
" has invalid payload "
491 if (match_len
< payload_len
+ 4) {
492 VLOG_DBG_RL(&rl
, "%"PRIu32
"-byte nxm_entry but only "
493 "%u bytes left in nx_match", payload_len
+ 4, match_len
);
501 nx_pull_match(struct ofpbuf
*b
, unsigned int match_len
, uint16_t priority
,
502 struct cls_rule
*rule
)
507 p
= ofpbuf_try_pull(b
, ROUND_UP(match_len
, 8));
509 VLOG_DBG_RL(&rl
, "nx_match length %u, rounded up to a "
510 "multiple of 8, is longer than space in message (max "
511 "length %zu)", match_len
, b
->size
);
512 return ofp_mkerr(OFPET_BAD_REQUEST
, OFPBRC_BAD_LEN
);
515 cls_rule_init_catchall(rule
, priority
);
516 while ((header
= nx_entry_ok(p
, match_len
)) != 0) {
517 unsigned length
= NXM_LENGTH(header
);
518 const struct nxm_field
*f
;
521 f
= nxm_field_lookup(header
);
523 error
= NXM_BAD_TYPE
;
524 } else if (!nxm_prereqs_ok(f
, &rule
->flow
)) {
525 error
= NXM_BAD_PREREQ
;
526 } else if (f
->wildcard
&& !(rule
->wc
.wildcards
& f
->wildcard
)) {
527 error
= NXM_DUP_TYPE
;
529 /* 'hasmask' and 'length' are known to be correct at this point
530 * because they are included in 'header' and nxm_field_lookup()
531 * checked them already. */
532 rule
->wc
.wildcards
&= ~f
->wildcard
;
533 error
= parse_nxm_entry(rule
, f
, p
+ 4, p
+ 4 + length
/ 2);
536 VLOG_DBG_RL(&rl
, "bad nxm_entry with vendor=%"PRIu32
", "
537 "field=%"PRIu32
", hasmask=%"PRIu32
", type=%"PRIu32
" "
539 NXM_VENDOR(header
), NXM_FIELD(header
),
540 NXM_HASMASK(header
), NXM_TYPE(header
),
547 match_len
-= 4 + length
;
550 return match_len
? NXM_INVALID
: 0;
553 /* nx_put_match() and helpers.
555 * 'put' functions whose names end in 'w' add a wildcarded field.
556 * 'put' functions whose names end in 'm' add a field that might be wildcarded.
557 * Other 'put' functions add exact-match fields.
561 nxm_put_header(struct ofpbuf
*b
, uint32_t header
)
563 ovs_be32 n_header
= htonl(header
);
564 ofpbuf_put(b
, &n_header
, sizeof n_header
);
568 nxm_put_8(struct ofpbuf
*b
, uint32_t header
, uint8_t value
)
570 nxm_put_header(b
, header
);
571 ofpbuf_put(b
, &value
, sizeof value
);
575 nxm_put_16(struct ofpbuf
*b
, uint32_t header
, ovs_be16 value
)
577 nxm_put_header(b
, header
);
578 ofpbuf_put(b
, &value
, sizeof value
);
582 nxm_put_16w(struct ofpbuf
*b
, uint32_t header
, ovs_be16 value
, ovs_be16 mask
)
584 nxm_put_header(b
, header
);
585 ofpbuf_put(b
, &value
, sizeof value
);
586 ofpbuf_put(b
, &mask
, sizeof mask
);
590 nxm_put_16m(struct ofpbuf
*b
, uint32_t header
, ovs_be16 value
, ovs_be16 mask
)
596 case CONSTANT_HTONS(UINT16_MAX
):
597 nxm_put_16(b
, header
, value
);
601 nxm_put_16w(b
, NXM_MAKE_WILD_HEADER(header
), value
, mask
);
607 nxm_put_32(struct ofpbuf
*b
, uint32_t header
, ovs_be32 value
)
609 nxm_put_header(b
, header
);
610 ofpbuf_put(b
, &value
, sizeof value
);
614 nxm_put_32w(struct ofpbuf
*b
, uint32_t header
, ovs_be32 value
, ovs_be32 mask
)
616 nxm_put_header(b
, header
);
617 ofpbuf_put(b
, &value
, sizeof value
);
618 ofpbuf_put(b
, &mask
, sizeof mask
);
622 nxm_put_32m(struct ofpbuf
*b
, uint32_t header
, ovs_be32 value
, ovs_be32 mask
)
628 case CONSTANT_HTONL(UINT32_MAX
):
629 nxm_put_32(b
, header
, value
);
633 nxm_put_32w(b
, NXM_MAKE_WILD_HEADER(header
), value
, mask
);
639 nxm_put_64(struct ofpbuf
*b
, uint32_t header
, ovs_be64 value
)
641 nxm_put_header(b
, header
);
642 ofpbuf_put(b
, &value
, sizeof value
);
646 nxm_put_64w(struct ofpbuf
*b
, uint32_t header
, ovs_be64 value
, ovs_be64 mask
)
648 nxm_put_header(b
, header
);
649 ofpbuf_put(b
, &value
, sizeof value
);
650 ofpbuf_put(b
, &mask
, sizeof mask
);
654 nxm_put_64m(struct ofpbuf
*b
, uint32_t header
, ovs_be64 value
, ovs_be64 mask
)
660 case CONSTANT_HTONLL(UINT64_MAX
):
661 nxm_put_64(b
, header
, value
);
665 nxm_put_64w(b
, NXM_MAKE_WILD_HEADER(header
), value
, mask
);
671 nxm_put_eth(struct ofpbuf
*b
, uint32_t header
,
672 const uint8_t value
[ETH_ADDR_LEN
])
674 nxm_put_header(b
, header
);
675 ofpbuf_put(b
, value
, ETH_ADDR_LEN
);
679 nxm_put_eth_dst(struct ofpbuf
*b
,
680 flow_wildcards_t wc
, const uint8_t value
[ETH_ADDR_LEN
])
682 switch (wc
& (FWW_DL_DST
| FWW_ETH_MCAST
)) {
683 case FWW_DL_DST
| FWW_ETH_MCAST
:
686 nxm_put_header(b
, NXM_OF_ETH_DST_W
);
687 ofpbuf_put(b
, value
, ETH_ADDR_LEN
);
688 ofpbuf_put(b
, eth_mcast_1
, ETH_ADDR_LEN
);
691 nxm_put_header(b
, NXM_OF_ETH_DST_W
);
692 ofpbuf_put(b
, value
, ETH_ADDR_LEN
);
693 ofpbuf_put(b
, eth_mcast_0
, ETH_ADDR_LEN
);
696 nxm_put_eth(b
, NXM_OF_ETH_DST
, value
);
702 nxm_put_ipv6(struct ofpbuf
*b
, uint32_t header
,
703 const struct in6_addr
*value
, const struct in6_addr
*mask
)
705 if (ipv6_mask_is_any(mask
)) {
707 } else if (ipv6_mask_is_exact(mask
)) {
708 nxm_put_header(b
, header
);
709 ofpbuf_put(b
, value
, sizeof *value
);
711 nxm_put_header(b
, NXM_MAKE_WILD_HEADER(header
));
712 ofpbuf_put(b
, value
, sizeof *value
);
713 ofpbuf_put(b
, mask
, sizeof *mask
);
717 /* Appends to 'b' the nx_match format that expresses 'cr' (except for
718 * 'cr->priority', because priority is not part of nx_match), plus enough
719 * zero bytes to pad the nx_match out to a multiple of 8.
721 * This function can cause 'b''s data to be reallocated.
723 * Returns the number of bytes appended to 'b', excluding padding.
725 * If 'cr' is a catch-all rule that matches every packet, then this function
726 * appends nothing to 'b' and returns 0. */
728 nx_put_match(struct ofpbuf
*b
, const struct cls_rule
*cr
)
730 const flow_wildcards_t wc
= cr
->wc
.wildcards
;
731 const struct flow
*flow
= &cr
->flow
;
732 const size_t start_len
= b
->size
;
737 if (!(wc
& FWW_IN_PORT
)) {
738 uint16_t in_port
= flow
->in_port
;
739 nxm_put_16(b
, NXM_OF_IN_PORT
, htons(in_port
));
743 nxm_put_eth_dst(b
, wc
, flow
->dl_dst
);
744 if (!(wc
& FWW_DL_SRC
)) {
745 nxm_put_eth(b
, NXM_OF_ETH_SRC
, flow
->dl_src
);
747 if (!(wc
& FWW_DL_TYPE
)) {
748 nxm_put_16(b
, NXM_OF_ETH_TYPE
,
749 ofputil_dl_type_to_openflow(flow
->dl_type
));
753 nxm_put_16m(b
, NXM_OF_VLAN_TCI
, flow
->vlan_tci
, cr
->wc
.vlan_tci_mask
);
756 if (!(wc
& FWW_DL_TYPE
) && flow
->dl_type
== htons(ETH_TYPE_IP
)) {
758 if (!(wc
& FWW_NW_TOS
)) {
759 nxm_put_8(b
, NXM_OF_IP_TOS
, flow
->nw_tos
& 0xfc);
761 nxm_put_32m(b
, NXM_OF_IP_SRC
, flow
->nw_src
, cr
->wc
.nw_src_mask
);
762 nxm_put_32m(b
, NXM_OF_IP_DST
, flow
->nw_dst
, cr
->wc
.nw_dst_mask
);
764 if (!(wc
& FWW_NW_PROTO
)) {
765 nxm_put_8(b
, NXM_OF_IP_PROTO
, flow
->nw_proto
);
766 switch (flow
->nw_proto
) {
769 if (!(wc
& FWW_TP_SRC
)) {
770 nxm_put_16(b
, NXM_OF_TCP_SRC
, flow
->tp_src
);
772 if (!(wc
& FWW_TP_DST
)) {
773 nxm_put_16(b
, NXM_OF_TCP_DST
, flow
->tp_dst
);
779 if (!(wc
& FWW_TP_SRC
)) {
780 nxm_put_16(b
, NXM_OF_UDP_SRC
, flow
->tp_src
);
782 if (!(wc
& FWW_TP_DST
)) {
783 nxm_put_16(b
, NXM_OF_UDP_DST
, flow
->tp_dst
);
789 if (!(wc
& FWW_TP_SRC
)) {
790 nxm_put_8(b
, NXM_OF_ICMP_TYPE
, ntohs(flow
->tp_src
));
792 if (!(wc
& FWW_TP_DST
)) {
793 nxm_put_8(b
, NXM_OF_ICMP_CODE
, ntohs(flow
->tp_dst
));
798 } else if (!(wc
& FWW_DL_TYPE
) && flow
->dl_type
== htons(ETH_TYPE_IPV6
)) {
801 if (!(wc
& FWW_NW_TOS
)) {
802 nxm_put_8(b
, NXM_OF_IP_TOS
, flow
->nw_tos
& 0xfc);
804 nxm_put_ipv6(b
, NXM_NX_IPV6_SRC
, &flow
->ipv6_src
,
805 &cr
->wc
.ipv6_src_mask
);
806 nxm_put_ipv6(b
, NXM_NX_IPV6_DST
, &flow
->ipv6_dst
,
807 &cr
->wc
.ipv6_dst_mask
);
809 if (!(wc
& FWW_NW_PROTO
)) {
810 nxm_put_8(b
, NXM_OF_IP_PROTO
, flow
->nw_proto
);
811 switch (flow
->nw_proto
) {
814 if (!(wc
& FWW_TP_SRC
)) {
815 nxm_put_16(b
, NXM_OF_TCP_SRC
, flow
->tp_src
);
817 if (!(wc
& FWW_TP_DST
)) {
818 nxm_put_16(b
, NXM_OF_TCP_DST
, flow
->tp_dst
);
824 if (!(wc
& FWW_TP_SRC
)) {
825 nxm_put_16(b
, NXM_OF_UDP_SRC
, flow
->tp_src
);
827 if (!(wc
& FWW_TP_DST
)) {
828 nxm_put_16(b
, NXM_OF_UDP_DST
, flow
->tp_dst
);
834 if (!(wc
& FWW_TP_SRC
)) {
835 nxm_put_8(b
, NXM_NX_ICMPV6_TYPE
, ntohs(flow
->tp_src
));
837 if (!(wc
& FWW_TP_DST
)) {
838 nxm_put_8(b
, NXM_NX_ICMPV6_CODE
, ntohs(flow
->tp_dst
));
840 if (!(wc
& FWW_ND_TARGET
)) {
841 nxm_put_ipv6(b
, NXM_NX_ND_TARGET
, &flow
->nd_target
,
844 if (!(wc
& FWW_ARP_SHA
)) {
845 nxm_put_eth(b
, NXM_NX_ND_SLL
, flow
->arp_sha
);
847 if (!(wc
& FWW_ARP_THA
)) {
848 nxm_put_eth(b
, NXM_NX_ND_TLL
, flow
->arp_tha
);
853 } else if (!(wc
& FWW_DL_TYPE
) && flow
->dl_type
== htons(ETH_TYPE_ARP
)) {
855 if (!(wc
& FWW_NW_PROTO
)) {
856 nxm_put_16(b
, NXM_OF_ARP_OP
, htons(flow
->nw_proto
));
858 nxm_put_32m(b
, NXM_OF_ARP_SPA
, flow
->nw_src
, cr
->wc
.nw_src_mask
);
859 nxm_put_32m(b
, NXM_OF_ARP_TPA
, flow
->nw_dst
, cr
->wc
.nw_dst_mask
);
860 if (!(wc
& FWW_ARP_SHA
)) {
861 nxm_put_eth(b
, NXM_NX_ARP_SHA
, flow
->arp_sha
);
863 if (!(wc
& FWW_ARP_THA
)) {
864 nxm_put_eth(b
, NXM_NX_ARP_THA
, flow
->arp_tha
);
869 nxm_put_64m(b
, NXM_NX_TUN_ID
, flow
->tun_id
, cr
->wc
.tun_id_mask
);
872 for (i
= 0; i
< FLOW_N_REGS
; i
++) {
873 nxm_put_32m(b
, NXM_NX_REG(i
),
874 htonl(flow
->regs
[i
]), htonl(cr
->wc
.reg_masks
[i
]));
877 match_len
= b
->size
- start_len
;
878 ofpbuf_put_zeros(b
, ROUND_UP(match_len
, 8) - match_len
);
882 /* nx_match_to_string() and helpers. */
884 static void format_nxm_field_name(struct ds
*, uint32_t header
);
887 nx_match_to_string(const uint8_t *p
, unsigned int match_len
)
893 return xstrdup("<any>");
897 while ((header
= nx_entry_ok(p
, match_len
)) != 0) {
898 unsigned int length
= NXM_LENGTH(header
);
899 unsigned int value_len
= nxm_field_bytes(header
);
900 const uint8_t *value
= p
+ 4;
901 const uint8_t *mask
= value
+ value_len
;
905 ds_put_cstr(&s
, ", ");
908 format_nxm_field_name(&s
, header
);
909 ds_put_char(&s
, '(');
911 for (i
= 0; i
< value_len
; i
++) {
912 ds_put_format(&s
, "%02x", value
[i
]);
914 if (NXM_HASMASK(header
)) {
915 ds_put_char(&s
, '/');
916 for (i
= 0; i
< value_len
; i
++) {
917 ds_put_format(&s
, "%02x", mask
[i
]);
920 ds_put_char(&s
, ')');
923 match_len
-= 4 + length
;
928 ds_put_cstr(&s
, ", ");
931 ds_put_format(&s
, "<%u invalid bytes>", match_len
);
934 return ds_steal_cstr(&s
);
938 format_nxm_field_name(struct ds
*s
, uint32_t header
)
940 const struct nxm_field
*f
= nxm_field_lookup(header
);
942 ds_put_cstr(s
, f
->name
);
944 ds_put_format(s
, "%d:%d", NXM_VENDOR(header
), NXM_FIELD(header
));
949 parse_nxm_field_name(const char *name
, int name_len
)
951 const struct nxm_field
*f
;
953 /* Check whether it's a field name. */
954 for (f
= nxm_fields
; f
< &nxm_fields
[ARRAY_SIZE(nxm_fields
)]; f
++) {
955 if (!strncmp(f
->name
, name
, name_len
) && f
->name
[name_len
] == '\0') {
960 /* Check whether it's a 32-bit field header value as hex.
961 * (This isn't ordinarily useful except for testing error behavior.) */
963 uint32_t header
= hexits_value(name
, name_len
, NULL
);
964 if (header
!= UINT_MAX
) {
972 /* nx_match_from_string(). */
975 nx_match_from_string(const char *s
, struct ofpbuf
*b
)
977 const char *full_s
= s
;
978 const size_t start_len
= b
->size
;
981 if (!strcmp(s
, "<any>")) {
982 /* Ensure that 'b->data' isn't actually null. */
983 ofpbuf_prealloc_tailroom(b
, 1);
987 for (s
+= strspn(s
, ", "); *s
; s
+= strspn(s
, ", ")) {
994 name_len
= strcspn(s
, "(");
995 if (s
[name_len
] != '(') {
996 ovs_fatal(0, "%s: missing ( at end of nx_match", full_s
);
999 header
= parse_nxm_field_name(name
, name_len
);
1001 ovs_fatal(0, "%s: unknown field `%.*s'", full_s
, name_len
, s
);
1006 nxm_put_header(b
, header
);
1007 s
= ofpbuf_put_hex(b
, s
, &n
);
1008 if (n
!= nxm_field_bytes(header
)) {
1009 ovs_fatal(0, "%.2s: hex digits expected", s
);
1011 if (NXM_HASMASK(header
)) {
1012 s
+= strspn(s
, " ");
1014 ovs_fatal(0, "%s: missing / in masked field %.*s",
1015 full_s
, name_len
, name
);
1017 s
= ofpbuf_put_hex(b
, s
+ 1, &n
);
1018 if (n
!= nxm_field_bytes(header
)) {
1019 ovs_fatal(0, "%.2s: hex digits expected", s
);
1023 s
+= strspn(s
, " ");
1025 ovs_fatal(0, "%s: missing ) following field %.*s",
1026 full_s
, name_len
, name
);
1031 match_len
= b
->size
- start_len
;
1032 ofpbuf_put_zeros(b
, ROUND_UP(match_len
, 8) - match_len
);
1037 nxm_parse_field_bits(const char *s
, uint32_t *headerp
, int *ofsp
, int *n_bitsp
)
1039 const char *full_s
= s
;
1047 name_len
= strcspn(s
, "[");
1048 if (s
[name_len
] != '[') {
1049 ovs_fatal(0, "%s: missing [ looking for field name", full_s
);
1052 header
= parse_nxm_field_name(name
, name_len
);
1054 ovs_fatal(0, "%s: unknown field `%.*s'", full_s
, name_len
, s
);
1056 width
= nxm_field_bits(header
);
1059 if (sscanf(s
, "[%d..%d]", &start
, &end
) == 2) {
1060 /* Nothing to do. */
1061 } else if (sscanf(s
, "[%d]", &start
) == 1) {
1063 } else if (!strncmp(s
, "[]", 2)) {
1067 ovs_fatal(0, "%s: syntax error expecting [] or [<bit>] or "
1068 "[<start>..<end>]", full_s
);
1070 s
= strchr(s
, ']') + 1;
1073 ovs_fatal(0, "%s: starting bit %d is after ending bit %d",
1074 full_s
, start
, end
);
1075 } else if (start
>= width
) {
1076 ovs_fatal(0, "%s: starting bit %d is not valid because field is only "
1077 "%d bits wide", full_s
, start
, width
);
1078 } else if (end
>= width
){
1079 ovs_fatal(0, "%s: ending bit %d is not valid because field is only "
1080 "%d bits wide", full_s
, end
, width
);
1085 *n_bitsp
= end
- start
+ 1;
1091 nxm_parse_reg_move(struct nx_action_reg_move
*move
, const char *s
)
1093 const char *full_s
= s
;
1095 int src_ofs
, dst_ofs
;
1096 int src_n_bits
, dst_n_bits
;
1098 s
= nxm_parse_field_bits(s
, &src
, &src_ofs
, &src_n_bits
);
1099 if (strncmp(s
, "->", 2)) {
1100 ovs_fatal(0, "%s: missing `->' following source", full_s
);
1103 s
= nxm_parse_field_bits(s
, &dst
, &dst_ofs
, &dst_n_bits
);
1105 ovs_fatal(0, "%s: trailing garbage following destination", full_s
);
1108 if (src_n_bits
!= dst_n_bits
) {
1109 ovs_fatal(0, "%s: source field is %d bits wide but destination is "
1110 "%d bits wide", full_s
, src_n_bits
, dst_n_bits
);
1113 move
->type
= htons(OFPAT_VENDOR
);
1114 move
->len
= htons(sizeof *move
);
1115 move
->vendor
= htonl(NX_VENDOR_ID
);
1116 move
->subtype
= htons(NXAST_REG_MOVE
);
1117 move
->n_bits
= htons(src_n_bits
);
1118 move
->src_ofs
= htons(src_ofs
);
1119 move
->dst_ofs
= htons(dst_ofs
);
1120 move
->src
= htonl(src
);
1121 move
->dst
= htonl(dst
);
1125 nxm_parse_reg_load(struct nx_action_reg_load
*load
, const char *s
)
1127 const char *full_s
= s
;
1132 value
= strtoull(s
, (char **) &s
, 0);
1133 if (strncmp(s
, "->", 2)) {
1134 ovs_fatal(0, "%s: missing `->' following value", full_s
);
1137 s
= nxm_parse_field_bits(s
, &dst
, &ofs
, &n_bits
);
1139 ovs_fatal(0, "%s: trailing garbage following destination", full_s
);
1142 if (n_bits
< 64 && (value
>> n_bits
) != 0) {
1143 ovs_fatal(0, "%s: value %"PRIu64
" does not fit into %d bits",
1144 full_s
, value
, n_bits
);
1147 load
->type
= htons(OFPAT_VENDOR
);
1148 load
->len
= htons(sizeof *load
);
1149 load
->vendor
= htonl(NX_VENDOR_ID
);
1150 load
->subtype
= htons(NXAST_REG_LOAD
);
1151 load
->ofs_nbits
= nxm_encode_ofs_nbits(ofs
, n_bits
);
1152 load
->dst
= htonl(dst
);
1153 load
->value
= htonll(value
);
1156 /* nxm_format_reg_move(), nxm_format_reg_load(). */
1159 nxm_format_field_bits(struct ds
*s
, uint32_t header
, int ofs
, int n_bits
)
1161 format_nxm_field_name(s
, header
);
1162 if (ofs
== 0 && n_bits
== nxm_field_bits(header
)) {
1163 ds_put_cstr(s
, "[]");
1164 } else if (n_bits
== 1) {
1165 ds_put_format(s
, "[%d]", ofs
);
1167 ds_put_format(s
, "[%d..%d]", ofs
, ofs
+ n_bits
- 1);
1172 nxm_format_reg_move(const struct nx_action_reg_move
*move
, struct ds
*s
)
1174 int n_bits
= ntohs(move
->n_bits
);
1175 int src_ofs
= ntohs(move
->src_ofs
);
1176 int dst_ofs
= ntohs(move
->dst_ofs
);
1177 uint32_t src
= ntohl(move
->src
);
1178 uint32_t dst
= ntohl(move
->dst
);
1180 ds_put_format(s
, "move:");
1181 nxm_format_field_bits(s
, src
, src_ofs
, n_bits
);
1182 ds_put_cstr(s
, "->");
1183 nxm_format_field_bits(s
, dst
, dst_ofs
, n_bits
);
1187 nxm_format_reg_load(const struct nx_action_reg_load
*load
, struct ds
*s
)
1189 int ofs
= nxm_decode_ofs(load
->ofs_nbits
);
1190 int n_bits
= nxm_decode_n_bits(load
->ofs_nbits
);
1191 uint32_t dst
= ntohl(load
->dst
);
1192 uint64_t value
= ntohll(load
->value
);
1194 ds_put_format(s
, "load:%#"PRIx64
"->", value
);
1195 nxm_format_field_bits(s
, dst
, ofs
, n_bits
);
1198 /* nxm_check_reg_move(), nxm_check_reg_load(). */
1201 field_ok(const struct nxm_field
*f
, const struct flow
*flow
, int size
)
1203 return (f
&& !NXM_HASMASK(f
->header
)
1204 && nxm_prereqs_ok(f
, flow
) && size
<= nxm_field_bits(f
->header
));
1208 nxm_check_reg_move(const struct nx_action_reg_move
*action
,
1209 const struct flow
*flow
)
1211 const struct nxm_field
*src
;
1212 const struct nxm_field
*dst
;
1214 if (action
->n_bits
== htons(0)) {
1215 return BAD_ARGUMENT
;
1218 src
= nxm_field_lookup(ntohl(action
->src
));
1219 if (!field_ok(src
, flow
, ntohs(action
->src_ofs
) + ntohs(action
->n_bits
))) {
1220 return BAD_ARGUMENT
;
1223 dst
= nxm_field_lookup(ntohl(action
->dst
));
1224 if (!field_ok(dst
, flow
, ntohs(action
->dst_ofs
) + ntohs(action
->n_bits
))) {
1225 return BAD_ARGUMENT
;
1228 if (!dst
->writable
) {
1229 return BAD_ARGUMENT
;
1236 nxm_check_reg_load(const struct nx_action_reg_load
*action
,
1237 const struct flow
*flow
)
1239 const struct nxm_field
*dst
;
1242 ofs
= nxm_decode_ofs(action
->ofs_nbits
);
1243 n_bits
= nxm_decode_n_bits(action
->ofs_nbits
);
1244 dst
= nxm_field_lookup(ntohl(action
->dst
));
1245 if (!field_ok(dst
, flow
, ofs
+ n_bits
)) {
1246 return BAD_ARGUMENT
;
1249 /* Reject 'action' if a bit numbered 'n_bits' or higher is set to 1 in
1251 if (n_bits
< 64 && ntohll(action
->value
) >> n_bits
) {
1252 return BAD_ARGUMENT
;
1255 if (!dst
->writable
) {
1256 return BAD_ARGUMENT
;
1262 /* nxm_execute_reg_move(), nxm_execute_reg_load(). */
1265 nxm_read_field(const struct nxm_field
*src
, const struct flow
*flow
)
1267 switch (src
->index
) {
1268 case NFI_NXM_OF_IN_PORT
:
1269 return flow
->in_port
;
1271 case NFI_NXM_OF_ETH_DST
:
1272 return eth_addr_to_uint64(flow
->dl_dst
);
1274 case NFI_NXM_OF_ETH_SRC
:
1275 return eth_addr_to_uint64(flow
->dl_src
);
1277 case NFI_NXM_OF_ETH_TYPE
:
1278 return ntohs(ofputil_dl_type_to_openflow(flow
->dl_type
));
1280 case NFI_NXM_OF_VLAN_TCI
:
1281 return ntohs(flow
->vlan_tci
);
1283 case NFI_NXM_OF_IP_TOS
:
1284 return flow
->nw_tos
;
1286 case NFI_NXM_OF_IP_PROTO
:
1287 case NFI_NXM_OF_ARP_OP
:
1288 return flow
->nw_proto
;
1290 case NFI_NXM_OF_IP_SRC
:
1291 case NFI_NXM_OF_ARP_SPA
:
1292 return ntohl(flow
->nw_src
);
1294 case NFI_NXM_OF_IP_DST
:
1295 case NFI_NXM_OF_ARP_TPA
:
1296 return ntohl(flow
->nw_dst
);
1298 case NFI_NXM_OF_TCP_SRC
:
1299 case NFI_NXM_OF_UDP_SRC
:
1300 return ntohs(flow
->tp_src
);
1302 case NFI_NXM_OF_TCP_DST
:
1303 case NFI_NXM_OF_UDP_DST
:
1304 return ntohs(flow
->tp_dst
);
1306 case NFI_NXM_OF_ICMP_TYPE
:
1307 case NFI_NXM_NX_ICMPV6_TYPE
:
1308 return ntohs(flow
->tp_src
) & 0xff;
1310 case NFI_NXM_OF_ICMP_CODE
:
1311 case NFI_NXM_NX_ICMPV6_CODE
:
1312 return ntohs(flow
->tp_dst
) & 0xff;
1314 case NFI_NXM_NX_TUN_ID
:
1315 return ntohll(flow
->tun_id
);
1317 #define NXM_READ_REGISTER(IDX) \
1318 case NFI_NXM_NX_REG##IDX: \
1319 return flow->regs[IDX]; \
1320 case NFI_NXM_NX_REG##IDX##_W: \
1323 NXM_READ_REGISTER(0);
1324 #if FLOW_N_REGS >= 2
1325 NXM_READ_REGISTER(1);
1327 #if FLOW_N_REGS >= 3
1328 NXM_READ_REGISTER(2);
1330 #if FLOW_N_REGS >= 4
1331 NXM_READ_REGISTER(3);
1337 case NFI_NXM_NX_ARP_SHA
:
1338 case NFI_NXM_NX_ND_SLL
:
1339 return eth_addr_to_uint64(flow
->arp_sha
);
1341 case NFI_NXM_NX_ARP_THA
:
1342 case NFI_NXM_NX_ND_TLL
:
1343 return eth_addr_to_uint64(flow
->arp_tha
);
1345 case NFI_NXM_NX_TUN_ID_W
:
1346 case NFI_NXM_OF_ETH_DST_W
:
1347 case NFI_NXM_OF_VLAN_TCI_W
:
1348 case NFI_NXM_OF_IP_SRC_W
:
1349 case NFI_NXM_OF_IP_DST_W
:
1350 case NFI_NXM_OF_ARP_SPA_W
:
1351 case NFI_NXM_OF_ARP_TPA_W
:
1352 case NFI_NXM_NX_IPV6_SRC
:
1353 case NFI_NXM_NX_IPV6_SRC_W
:
1354 case NFI_NXM_NX_IPV6_DST
:
1355 case NFI_NXM_NX_IPV6_DST_W
:
1356 case NFI_NXM_NX_ND_TARGET
:
1365 nxm_write_field(const struct nxm_field
*dst
, struct flow
*flow
,
1368 switch (dst
->index
) {
1369 case NFI_NXM_OF_VLAN_TCI
:
1370 flow
->vlan_tci
= htons(new_value
);
1373 case NFI_NXM_NX_TUN_ID
:
1374 flow
->tun_id
= htonll(new_value
);
1377 #define NXM_WRITE_REGISTER(IDX) \
1378 case NFI_NXM_NX_REG##IDX: \
1379 flow->regs[IDX] = new_value; \
1381 case NFI_NXM_NX_REG##IDX##_W: \
1384 NXM_WRITE_REGISTER(0);
1385 #if FLOW_N_REGS >= 2
1386 NXM_WRITE_REGISTER(1);
1388 #if FLOW_N_REGS >= 3
1389 NXM_WRITE_REGISTER(2);
1391 #if FLOW_N_REGS >= 4
1392 NXM_WRITE_REGISTER(3);
1398 case NFI_NXM_OF_IN_PORT
:
1399 case NFI_NXM_OF_ETH_DST
:
1400 case NFI_NXM_OF_ETH_SRC
:
1401 case NFI_NXM_OF_ETH_TYPE
:
1402 case NFI_NXM_OF_IP_TOS
:
1403 case NFI_NXM_OF_IP_PROTO
:
1404 case NFI_NXM_OF_ARP_OP
:
1405 case NFI_NXM_OF_IP_SRC
:
1406 case NFI_NXM_OF_ARP_SPA
:
1407 case NFI_NXM_OF_IP_DST
:
1408 case NFI_NXM_OF_ARP_TPA
:
1409 case NFI_NXM_OF_TCP_SRC
:
1410 case NFI_NXM_OF_UDP_SRC
:
1411 case NFI_NXM_OF_TCP_DST
:
1412 case NFI_NXM_OF_UDP_DST
:
1413 case NFI_NXM_OF_ICMP_TYPE
:
1414 case NFI_NXM_OF_ICMP_CODE
:
1415 case NFI_NXM_NX_TUN_ID_W
:
1416 case NFI_NXM_OF_ETH_DST_W
:
1417 case NFI_NXM_OF_VLAN_TCI_W
:
1418 case NFI_NXM_OF_IP_SRC_W
:
1419 case NFI_NXM_OF_IP_DST_W
:
1420 case NFI_NXM_OF_ARP_SPA_W
:
1421 case NFI_NXM_OF_ARP_TPA_W
:
1422 case NFI_NXM_NX_ARP_SHA
:
1423 case NFI_NXM_NX_ARP_THA
:
1424 case NFI_NXM_NX_IPV6_SRC
:
1425 case NFI_NXM_NX_IPV6_SRC_W
:
1426 case NFI_NXM_NX_IPV6_DST
:
1427 case NFI_NXM_NX_IPV6_DST_W
:
1428 case NFI_NXM_NX_ICMPV6_TYPE
:
1429 case NFI_NXM_NX_ICMPV6_CODE
:
1430 case NFI_NXM_NX_ND_TARGET
:
1431 case NFI_NXM_NX_ND_SLL
:
1432 case NFI_NXM_NX_ND_TLL
:
1439 nxm_execute_reg_move(const struct nx_action_reg_move
*action
,
1443 int n_bits
= ntohs(action
->n_bits
);
1444 uint64_t mask
= n_bits
== 64 ? UINT64_MAX
: (UINT64_C(1) << n_bits
) - 1;
1446 /* Get the interesting bits of the source field. */
1447 const struct nxm_field
*src
= nxm_field_lookup(ntohl(action
->src
));
1448 int src_ofs
= ntohs(action
->src_ofs
);
1449 uint64_t src_data
= nxm_read_field(src
, flow
) & (mask
<< src_ofs
);
1451 /* Get the remaining bits of the destination field. */
1452 const struct nxm_field
*dst
= nxm_field_lookup(ntohl(action
->dst
));
1453 int dst_ofs
= ntohs(action
->dst_ofs
);
1454 uint64_t dst_data
= nxm_read_field(dst
, flow
) & ~(mask
<< dst_ofs
);
1456 /* Get the final value. */
1457 uint64_t new_data
= dst_data
| ((src_data
>> src_ofs
) << dst_ofs
);
1459 nxm_write_field(dst
, flow
, new_data
);
1463 nxm_execute_reg_load(const struct nx_action_reg_load
*action
,
1467 int n_bits
= nxm_decode_n_bits(action
->ofs_nbits
);
1468 uint64_t mask
= n_bits
== 64 ? UINT64_MAX
: (UINT64_C(1) << n_bits
) - 1;
1470 /* Get source data. */
1471 uint64_t src_data
= ntohll(action
->value
);
1473 /* Get remaining bits of the destination field. */
1474 const struct nxm_field
*dst
= nxm_field_lookup(ntohl(action
->dst
));
1475 int dst_ofs
= nxm_decode_ofs(action
->ofs_nbits
);
1476 uint64_t dst_data
= nxm_read_field(dst
, flow
) & ~(mask
<< dst_ofs
);
1478 /* Get the final value. */
1479 uint64_t new_data
= dst_data
| (src_data
<< dst_ofs
);
1481 nxm_write_field(dst
, flow
, new_data
);