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fa37b408 | 1 | /* |
cb22974d | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc. |
fa37b408 BP |
3 | * |
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: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
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. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | #include "ofp-print.h" | |
03e1125c | 19 | #include <ctype.h> |
dc4762ed | 20 | #include <errno.h> |
fa37b408 | 21 | #include <inttypes.h> |
6ca00f6f ETN |
22 | #include <sys/types.h> |
23 | #include <netinet/in.h> | |
b459a924 | 24 | #include <netinet/icmp6.h> |
fa37b408 | 25 | #include <stdlib.h> |
daff3353 | 26 | #include "bundle.h" |
10a24935 | 27 | #include "byte-order.h" |
d8ae4d67 | 28 | #include "classifier.h" |
dc4762ed | 29 | #include "dynamic-string.h" |
75a75043 | 30 | #include "learn.h" |
816fd533 | 31 | #include "meta-flow.h" |
9e1fd49b | 32 | #include "multipath.h" |
6c038611 | 33 | #include "netdev.h" |
b6c9e612 | 34 | #include "nx-match.h" |
f25d0cf3 | 35 | #include "ofp-actions.h" |
dc4762ed | 36 | #include "ofp-errors.h" |
982697a4 | 37 | #include "ofp-msgs.h" |
fa37b408 BP |
38 | #include "ofp-util.h" |
39 | #include "ofpbuf.h" | |
40 | #include "packets.h" | |
41 | #include "random.h" | |
4ffd1b43 | 42 | #include "unaligned.h" |
e41a9130 | 43 | #include "type-props.h" |
5136ce49 | 44 | #include "vlog.h" |
fa37b408 | 45 | |
d98e6007 | 46 | VLOG_DEFINE_THIS_MODULE(ofp_util); |
fa37b408 BP |
47 | |
48 | /* Rate limit for OpenFlow message parse errors. These always indicate a bug | |
49 | * in the peer and so there's not much point in showing a lot of them. */ | |
50 | static struct vlog_rate_limit bad_ofmsg_rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
51 | ||
0596e897 BP |
52 | /* Given the wildcard bit count in the least-significant 6 of 'wcbits', returns |
53 | * an IP netmask with a 1 in each bit that must match and a 0 in each bit that | |
54 | * is wildcarded. | |
55 | * | |
56 | * The bits in 'wcbits' are in the format used in enum ofp_flow_wildcards: 0 | |
57 | * is exact match, 1 ignores the LSB, 2 ignores the 2 least-significant bits, | |
58 | * ..., 32 and higher wildcard the entire field. This is the *opposite* of the | |
59 | * usual convention where e.g. /24 indicates that 8 bits (not 24 bits) are | |
60 | * wildcarded. */ | |
61 | ovs_be32 | |
62 | ofputil_wcbits_to_netmask(int wcbits) | |
63 | { | |
64 | wcbits &= 0x3f; | |
65 | return wcbits < 32 ? htonl(~((1u << wcbits) - 1)) : 0; | |
66 | } | |
67 | ||
68 | /* Given the IP netmask 'netmask', returns the number of bits of the IP address | |
c08201d6 BP |
69 | * that it wildcards, that is, the number of 0-bits in 'netmask', a number |
70 | * between 0 and 32 inclusive. | |
71 | * | |
72 | * If 'netmask' is not a CIDR netmask (see ip_is_cidr()), the return value will | |
73 | * still be in the valid range but isn't otherwise meaningful. */ | |
0596e897 BP |
74 | int |
75 | ofputil_netmask_to_wcbits(ovs_be32 netmask) | |
76 | { | |
aad29cd1 | 77 | return 32 - ip_count_cidr_bits(netmask); |
0596e897 BP |
78 | } |
79 | ||
eec25dc1 | 80 | /* Converts the OpenFlow 1.0 wildcards in 'ofpfw' (OFPFW10_*) into a |
81a76618 | 81 | * flow_wildcards in 'wc' for use in struct match. It is the caller's |
eec25dc1 BP |
82 | * responsibility to handle the special case where the flow match's dl_vlan is |
83 | * set to OFP_VLAN_NONE. */ | |
7286b1e1 | 84 | void |
eec25dc1 | 85 | ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *wc) |
d8ae4d67 | 86 | { |
cff78c88 | 87 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 20); |
a877206f | 88 | |
81a76618 | 89 | /* Initialize most of wc. */ |
f9ba8dad | 90 | flow_wildcards_init_catchall(wc); |
bad68a99 | 91 | |
0bdc4bec | 92 | if (!(ofpfw & OFPFW10_IN_PORT)) { |
26720e24 | 93 | wc->masks.in_port = UINT16_MAX; |
27cafc5f | 94 | } |
5d9499c4 BP |
95 | |
96 | if (!(ofpfw & OFPFW10_NW_TOS)) { | |
26720e24 | 97 | wc->masks.nw_tos |= IP_DSCP_MASK; |
d8ae4d67 | 98 | } |
7257b535 | 99 | |
851d3105 | 100 | if (!(ofpfw & OFPFW10_NW_PROTO)) { |
26720e24 | 101 | wc->masks.nw_proto = UINT8_MAX; |
851d3105 | 102 | } |
26720e24 BP |
103 | wc->masks.nw_src = ofputil_wcbits_to_netmask(ofpfw |
104 | >> OFPFW10_NW_SRC_SHIFT); | |
105 | wc->masks.nw_dst = ofputil_wcbits_to_netmask(ofpfw | |
106 | >> OFPFW10_NW_DST_SHIFT); | |
d8ae4d67 | 107 | |
eec25dc1 | 108 | if (!(ofpfw & OFPFW10_TP_SRC)) { |
26720e24 | 109 | wc->masks.tp_src = htons(UINT16_MAX); |
73f33563 | 110 | } |
eec25dc1 | 111 | if (!(ofpfw & OFPFW10_TP_DST)) { |
26720e24 | 112 | wc->masks.tp_dst = htons(UINT16_MAX); |
73f33563 BP |
113 | } |
114 | ||
eec25dc1 | 115 | if (!(ofpfw & OFPFW10_DL_SRC)) { |
26720e24 | 116 | memset(wc->masks.dl_src, 0xff, ETH_ADDR_LEN); |
73c0ce34 | 117 | } |
eec25dc1 | 118 | if (!(ofpfw & OFPFW10_DL_DST)) { |
26720e24 | 119 | memset(wc->masks.dl_dst, 0xff, ETH_ADDR_LEN); |
d8ae4d67 | 120 | } |
e2170cff | 121 | if (!(ofpfw & OFPFW10_DL_TYPE)) { |
26720e24 | 122 | wc->masks.dl_type = htons(UINT16_MAX); |
e2170cff | 123 | } |
d8ae4d67 | 124 | |
eb6f28db | 125 | /* VLAN TCI mask. */ |
eec25dc1 | 126 | if (!(ofpfw & OFPFW10_DL_VLAN_PCP)) { |
26720e24 | 127 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
eb6f28db | 128 | } |
eec25dc1 | 129 | if (!(ofpfw & OFPFW10_DL_VLAN)) { |
26720e24 | 130 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
eb6f28db BP |
131 | } |
132 | } | |
133 | ||
81a76618 | 134 | /* Converts the ofp10_match in 'ofmatch' into a struct match in 'match'. */ |
eb6f28db | 135 | void |
81a76618 BP |
136 | ofputil_match_from_ofp10_match(const struct ofp10_match *ofmatch, |
137 | struct match *match) | |
138 | { | |
139 | uint32_t ofpfw = ntohl(ofmatch->wildcards) & OFPFW10_ALL; | |
140 | ||
141 | /* Initialize match->wc. */ | |
296e07ac | 142 | memset(&match->flow, 0, sizeof match->flow); |
81a76618 BP |
143 | ofputil_wildcard_from_ofpfw10(ofpfw, &match->wc); |
144 | ||
145 | /* Initialize most of match->flow. */ | |
146 | match->flow.nw_src = ofmatch->nw_src; | |
147 | match->flow.nw_dst = ofmatch->nw_dst; | |
148 | match->flow.in_port = ntohs(ofmatch->in_port); | |
149 | match->flow.dl_type = ofputil_dl_type_from_openflow(ofmatch->dl_type); | |
150 | match->flow.tp_src = ofmatch->tp_src; | |
151 | match->flow.tp_dst = ofmatch->tp_dst; | |
152 | memcpy(match->flow.dl_src, ofmatch->dl_src, ETH_ADDR_LEN); | |
153 | memcpy(match->flow.dl_dst, ofmatch->dl_dst, ETH_ADDR_LEN); | |
154 | match->flow.nw_tos = ofmatch->nw_tos & IP_DSCP_MASK; | |
155 | match->flow.nw_proto = ofmatch->nw_proto; | |
d8ae4d67 | 156 | |
66642cb4 | 157 | /* Translate VLANs. */ |
0c436519 | 158 | if (!(ofpfw & OFPFW10_DL_VLAN) && |
81a76618 | 159 | ofmatch->dl_vlan == htons(OFP10_VLAN_NONE)) { |
47271d0d BP |
160 | /* Match only packets without 802.1Q header. |
161 | * | |
eec25dc1 | 162 | * When OFPFW10_DL_VLAN_PCP is wildcarded, this is obviously correct. |
47271d0d | 163 | * |
eec25dc1 | 164 | * If OFPFW10_DL_VLAN_PCP is matched, the flow match is contradictory, |
47271d0d BP |
165 | * because we can't have a specific PCP without an 802.1Q header. |
166 | * However, older versions of OVS treated this as matching packets | |
167 | * withut an 802.1Q header, so we do here too. */ | |
81a76618 BP |
168 | match->flow.vlan_tci = htons(0); |
169 | match->wc.masks.vlan_tci = htons(0xffff); | |
47271d0d BP |
170 | } else { |
171 | ovs_be16 vid, pcp, tci; | |
172 | ||
81a76618 BP |
173 | vid = ofmatch->dl_vlan & htons(VLAN_VID_MASK); |
174 | pcp = htons((ofmatch->dl_vlan_pcp << VLAN_PCP_SHIFT) & VLAN_PCP_MASK); | |
47271d0d | 175 | tci = vid | pcp | htons(VLAN_CFI); |
81a76618 | 176 | match->flow.vlan_tci = tci & match->wc.masks.vlan_tci; |
66642cb4 BP |
177 | } |
178 | ||
d8ae4d67 | 179 | /* Clean up. */ |
81a76618 | 180 | match_zero_wildcarded_fields(match); |
d8ae4d67 BP |
181 | } |
182 | ||
81a76618 | 183 | /* Convert 'match' into the OpenFlow 1.0 match structure 'ofmatch'. */ |
d8ae4d67 | 184 | void |
81a76618 BP |
185 | ofputil_match_to_ofp10_match(const struct match *match, |
186 | struct ofp10_match *ofmatch) | |
d8ae4d67 | 187 | { |
81a76618 | 188 | const struct flow_wildcards *wc = &match->wc; |
eeba8e4f | 189 | uint32_t ofpfw; |
d8ae4d67 | 190 | |
66642cb4 | 191 | /* Figure out most OpenFlow wildcards. */ |
27cafc5f | 192 | ofpfw = 0; |
26720e24 | 193 | if (!wc->masks.in_port) { |
27cafc5f BP |
194 | ofpfw |= OFPFW10_IN_PORT; |
195 | } | |
26720e24 | 196 | if (!wc->masks.dl_type) { |
27cafc5f BP |
197 | ofpfw |= OFPFW10_DL_TYPE; |
198 | } | |
26720e24 | 199 | if (!wc->masks.nw_proto) { |
27cafc5f BP |
200 | ofpfw |= OFPFW10_NW_PROTO; |
201 | } | |
26720e24 | 202 | ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_src) |
eec25dc1 | 203 | << OFPFW10_NW_SRC_SHIFT); |
26720e24 | 204 | ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_dst) |
eec25dc1 | 205 | << OFPFW10_NW_DST_SHIFT); |
26720e24 | 206 | if (!(wc->masks.nw_tos & IP_DSCP_MASK)) { |
eec25dc1 | 207 | ofpfw |= OFPFW10_NW_TOS; |
d8ae4d67 | 208 | } |
26720e24 | 209 | if (!wc->masks.tp_src) { |
eec25dc1 | 210 | ofpfw |= OFPFW10_TP_SRC; |
73f33563 | 211 | } |
26720e24 | 212 | if (!wc->masks.tp_dst) { |
eec25dc1 | 213 | ofpfw |= OFPFW10_TP_DST; |
73f33563 | 214 | } |
26720e24 | 215 | if (eth_addr_is_zero(wc->masks.dl_src)) { |
eec25dc1 | 216 | ofpfw |= OFPFW10_DL_SRC; |
73c0ce34 | 217 | } |
26720e24 | 218 | if (eth_addr_is_zero(wc->masks.dl_dst)) { |
eec25dc1 | 219 | ofpfw |= OFPFW10_DL_DST; |
73c0ce34 | 220 | } |
ff9d3826 | 221 | |
66642cb4 | 222 | /* Translate VLANs. */ |
81a76618 BP |
223 | ofmatch->dl_vlan = htons(0); |
224 | ofmatch->dl_vlan_pcp = 0; | |
225 | if (match->wc.masks.vlan_tci == htons(0)) { | |
eec25dc1 | 226 | ofpfw |= OFPFW10_DL_VLAN | OFPFW10_DL_VLAN_PCP; |
81a76618 BP |
227 | } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI) |
228 | && !(match->flow.vlan_tci & htons(VLAN_CFI))) { | |
229 | ofmatch->dl_vlan = htons(OFP10_VLAN_NONE); | |
41ca9a1e | 230 | ofpfw |= OFPFW10_DL_VLAN_PCP; |
66642cb4 | 231 | } else { |
81a76618 | 232 | if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) { |
eec25dc1 | 233 | ofpfw |= OFPFW10_DL_VLAN; |
66642cb4 | 234 | } else { |
81a76618 | 235 | ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci)); |
66642cb4 BP |
236 | } |
237 | ||
81a76618 | 238 | if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) { |
eec25dc1 | 239 | ofpfw |= OFPFW10_DL_VLAN_PCP; |
66642cb4 | 240 | } else { |
81a76618 | 241 | ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci); |
66642cb4 BP |
242 | } |
243 | } | |
244 | ||
245 | /* Compose most of the match structure. */ | |
81a76618 BP |
246 | ofmatch->wildcards = htonl(ofpfw); |
247 | ofmatch->in_port = htons(match->flow.in_port); | |
248 | memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN); | |
249 | memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN); | |
250 | ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type); | |
251 | ofmatch->nw_src = match->flow.nw_src; | |
252 | ofmatch->nw_dst = match->flow.nw_dst; | |
253 | ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK; | |
254 | ofmatch->nw_proto = match->flow.nw_proto; | |
255 | ofmatch->tp_src = match->flow.tp_src; | |
256 | ofmatch->tp_dst = match->flow.tp_dst; | |
257 | memset(ofmatch->pad1, '\0', sizeof ofmatch->pad1); | |
258 | memset(ofmatch->pad2, '\0', sizeof ofmatch->pad2); | |
d8ae4d67 BP |
259 | } |
260 | ||
aa319503 | 261 | enum ofperr |
81a76618 BP |
262 | ofputil_pull_ofp11_match(struct ofpbuf *buf, struct match *match, |
263 | uint16_t *padded_match_len) | |
aa319503 | 264 | { |
36a16881 SH |
265 | struct ofp11_match_header *omh = buf->data; |
266 | uint16_t match_len; | |
aa319503 | 267 | |
36a16881 | 268 | if (buf->size < sizeof *omh) { |
aa319503 BP |
269 | return OFPERR_OFPBMC_BAD_LEN; |
270 | } | |
271 | ||
36a16881 SH |
272 | match_len = ntohs(omh->length); |
273 | ||
aa319503 | 274 | switch (ntohs(omh->type)) { |
36a16881 SH |
275 | case OFPMT_STANDARD: { |
276 | struct ofp11_match *om; | |
277 | ||
278 | if (match_len != sizeof *om || buf->size < sizeof *om) { | |
aa319503 BP |
279 | return OFPERR_OFPBMC_BAD_LEN; |
280 | } | |
281 | om = ofpbuf_pull(buf, sizeof *om); | |
36a16881 SH |
282 | if (padded_match_len) { |
283 | *padded_match_len = match_len; | |
284 | } | |
81a76618 | 285 | return ofputil_match_from_ofp11_match(om, match); |
36a16881 SH |
286 | } |
287 | ||
288 | case OFPMT_OXM: | |
289 | if (padded_match_len) { | |
290 | *padded_match_len = ROUND_UP(match_len, 8); | |
291 | } | |
81a76618 | 292 | return oxm_pull_match(buf, match); |
aa319503 BP |
293 | |
294 | default: | |
295 | return OFPERR_OFPBMC_BAD_TYPE; | |
296 | } | |
297 | } | |
298 | ||
81a76618 BP |
299 | /* Converts the ofp11_match in 'match' into a struct match in 'match. Returns |
300 | * 0 if successful, otherwise an OFPERR_* value. */ | |
410698cf | 301 | enum ofperr |
81a76618 BP |
302 | ofputil_match_from_ofp11_match(const struct ofp11_match *ofmatch, |
303 | struct match *match) | |
410698cf | 304 | { |
81a76618 | 305 | uint16_t wc = ntohl(ofmatch->wildcards); |
410698cf BP |
306 | uint8_t dl_src_mask[ETH_ADDR_LEN]; |
307 | uint8_t dl_dst_mask[ETH_ADDR_LEN]; | |
8087f5ff | 308 | bool ipv4, arp, rarp; |
410698cf BP |
309 | int i; |
310 | ||
81a76618 | 311 | match_init_catchall(match); |
410698cf BP |
312 | |
313 | if (!(wc & OFPFW11_IN_PORT)) { | |
314 | uint16_t ofp_port; | |
315 | enum ofperr error; | |
316 | ||
81a76618 | 317 | error = ofputil_port_from_ofp11(ofmatch->in_port, &ofp_port); |
410698cf BP |
318 | if (error) { |
319 | return OFPERR_OFPBMC_BAD_VALUE; | |
320 | } | |
81a76618 | 321 | match_set_in_port(match, ofp_port); |
410698cf BP |
322 | } |
323 | ||
324 | for (i = 0; i < ETH_ADDR_LEN; i++) { | |
81a76618 | 325 | dl_src_mask[i] = ~ofmatch->dl_src_mask[i]; |
410698cf | 326 | } |
81a76618 | 327 | match_set_dl_src_masked(match, ofmatch->dl_src, dl_src_mask); |
410698cf BP |
328 | |
329 | for (i = 0; i < ETH_ADDR_LEN; i++) { | |
81a76618 | 330 | dl_dst_mask[i] = ~ofmatch->dl_dst_mask[i]; |
410698cf | 331 | } |
81a76618 | 332 | match_set_dl_dst_masked(match, ofmatch->dl_dst, dl_dst_mask); |
410698cf BP |
333 | |
334 | if (!(wc & OFPFW11_DL_VLAN)) { | |
81a76618 | 335 | if (ofmatch->dl_vlan == htons(OFPVID11_NONE)) { |
410698cf | 336 | /* Match only packets without a VLAN tag. */ |
81a76618 BP |
337 | match->flow.vlan_tci = htons(0); |
338 | match->wc.masks.vlan_tci = htons(UINT16_MAX); | |
410698cf | 339 | } else { |
81a76618 | 340 | if (ofmatch->dl_vlan == htons(OFPVID11_ANY)) { |
410698cf | 341 | /* Match any packet with a VLAN tag regardless of VID. */ |
81a76618 BP |
342 | match->flow.vlan_tci = htons(VLAN_CFI); |
343 | match->wc.masks.vlan_tci = htons(VLAN_CFI); | |
344 | } else if (ntohs(ofmatch->dl_vlan) < 4096) { | |
410698cf | 345 | /* Match only packets with the specified VLAN VID. */ |
81a76618 BP |
346 | match->flow.vlan_tci = htons(VLAN_CFI) | ofmatch->dl_vlan; |
347 | match->wc.masks.vlan_tci = htons(VLAN_CFI | VLAN_VID_MASK); | |
410698cf BP |
348 | } else { |
349 | /* Invalid VID. */ | |
350 | return OFPERR_OFPBMC_BAD_VALUE; | |
351 | } | |
352 | ||
353 | if (!(wc & OFPFW11_DL_VLAN_PCP)) { | |
81a76618 BP |
354 | if (ofmatch->dl_vlan_pcp <= 7) { |
355 | match->flow.vlan_tci |= htons(ofmatch->dl_vlan_pcp | |
356 | << VLAN_PCP_SHIFT); | |
357 | match->wc.masks.vlan_tci |= htons(VLAN_PCP_MASK); | |
410698cf BP |
358 | } else { |
359 | /* Invalid PCP. */ | |
360 | return OFPERR_OFPBMC_BAD_VALUE; | |
361 | } | |
362 | } | |
363 | } | |
364 | } | |
365 | ||
366 | if (!(wc & OFPFW11_DL_TYPE)) { | |
81a76618 BP |
367 | match_set_dl_type(match, |
368 | ofputil_dl_type_from_openflow(ofmatch->dl_type)); | |
410698cf BP |
369 | } |
370 | ||
81a76618 BP |
371 | ipv4 = match->flow.dl_type == htons(ETH_TYPE_IP); |
372 | arp = match->flow.dl_type == htons(ETH_TYPE_ARP); | |
8087f5ff | 373 | rarp = match->flow.dl_type == htons(ETH_TYPE_RARP); |
410698cf BP |
374 | |
375 | if (ipv4 && !(wc & OFPFW11_NW_TOS)) { | |
81a76618 | 376 | if (ofmatch->nw_tos & ~IP_DSCP_MASK) { |
410698cf BP |
377 | /* Invalid TOS. */ |
378 | return OFPERR_OFPBMC_BAD_VALUE; | |
379 | } | |
380 | ||
81a76618 | 381 | match_set_nw_dscp(match, ofmatch->nw_tos); |
410698cf BP |
382 | } |
383 | ||
8087f5ff | 384 | if (ipv4 || arp || rarp) { |
410698cf | 385 | if (!(wc & OFPFW11_NW_PROTO)) { |
81a76618 | 386 | match_set_nw_proto(match, ofmatch->nw_proto); |
410698cf | 387 | } |
81a76618 BP |
388 | match_set_nw_src_masked(match, ofmatch->nw_src, ~ofmatch->nw_src_mask); |
389 | match_set_nw_dst_masked(match, ofmatch->nw_dst, ~ofmatch->nw_dst_mask); | |
410698cf BP |
390 | } |
391 | ||
392 | #define OFPFW11_TP_ALL (OFPFW11_TP_SRC | OFPFW11_TP_DST) | |
393 | if (ipv4 && (wc & OFPFW11_TP_ALL) != OFPFW11_TP_ALL) { | |
81a76618 | 394 | switch (match->flow.nw_proto) { |
410698cf BP |
395 | case IPPROTO_ICMP: |
396 | /* "A.2.3 Flow Match Structures" in OF1.1 says: | |
397 | * | |
398 | * The tp_src and tp_dst fields will be ignored unless the | |
399 | * network protocol specified is as TCP, UDP or SCTP. | |
400 | * | |
401 | * but I'm pretty sure we should support ICMP too, otherwise | |
402 | * that's a regression from OF1.0. */ | |
403 | if (!(wc & OFPFW11_TP_SRC)) { | |
81a76618 | 404 | uint16_t icmp_type = ntohs(ofmatch->tp_src); |
410698cf | 405 | if (icmp_type < 0x100) { |
81a76618 | 406 | match_set_icmp_type(match, icmp_type); |
410698cf BP |
407 | } else { |
408 | return OFPERR_OFPBMC_BAD_FIELD; | |
409 | } | |
410 | } | |
411 | if (!(wc & OFPFW11_TP_DST)) { | |
81a76618 | 412 | uint16_t icmp_code = ntohs(ofmatch->tp_dst); |
410698cf | 413 | if (icmp_code < 0x100) { |
81a76618 | 414 | match_set_icmp_code(match, icmp_code); |
410698cf BP |
415 | } else { |
416 | return OFPERR_OFPBMC_BAD_FIELD; | |
417 | } | |
418 | } | |
419 | break; | |
420 | ||
421 | case IPPROTO_TCP: | |
422 | case IPPROTO_UDP: | |
423 | if (!(wc & (OFPFW11_TP_SRC))) { | |
81a76618 | 424 | match_set_tp_src(match, ofmatch->tp_src); |
410698cf BP |
425 | } |
426 | if (!(wc & (OFPFW11_TP_DST))) { | |
81a76618 | 427 | match_set_tp_dst(match, ofmatch->tp_dst); |
410698cf BP |
428 | } |
429 | break; | |
430 | ||
431 | case IPPROTO_SCTP: | |
432 | /* We don't support SCTP and it seems that we should tell the | |
433 | * controller, since OF1.1 implementations are supposed to. */ | |
434 | return OFPERR_OFPBMC_BAD_FIELD; | |
435 | ||
436 | default: | |
437 | /* OF1.1 says explicitly to ignore this. */ | |
438 | break; | |
439 | } | |
440 | } | |
441 | ||
b02475c5 | 442 | if (eth_type_mpls(match->flow.dl_type)) { |
410698cf BP |
443 | enum { OFPFW11_MPLS_ALL = OFPFW11_MPLS_LABEL | OFPFW11_MPLS_TC }; |
444 | ||
445 | if ((wc & OFPFW11_MPLS_ALL) != OFPFW11_MPLS_ALL) { | |
446 | /* MPLS not supported. */ | |
447 | return OFPERR_OFPBMC_BAD_TAG; | |
448 | } | |
449 | } | |
450 | ||
81a76618 BP |
451 | match_set_metadata_masked(match, ofmatch->metadata, |
452 | ~ofmatch->metadata_mask); | |
410698cf BP |
453 | |
454 | return 0; | |
455 | } | |
456 | ||
81a76618 | 457 | /* Convert 'match' into the OpenFlow 1.1 match structure 'ofmatch'. */ |
410698cf | 458 | void |
81a76618 BP |
459 | ofputil_match_to_ofp11_match(const struct match *match, |
460 | struct ofp11_match *ofmatch) | |
410698cf BP |
461 | { |
462 | uint32_t wc = 0; | |
463 | int i; | |
464 | ||
81a76618 BP |
465 | memset(ofmatch, 0, sizeof *ofmatch); |
466 | ofmatch->omh.type = htons(OFPMT_STANDARD); | |
467 | ofmatch->omh.length = htons(OFPMT11_STANDARD_LENGTH); | |
410698cf | 468 | |
81a76618 | 469 | if (!match->wc.masks.in_port) { |
410698cf BP |
470 | wc |= OFPFW11_IN_PORT; |
471 | } else { | |
81a76618 | 472 | ofmatch->in_port = ofputil_port_to_ofp11(match->flow.in_port); |
410698cf BP |
473 | } |
474 | ||
81a76618 | 475 | memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN); |
410698cf | 476 | for (i = 0; i < ETH_ADDR_LEN; i++) { |
81a76618 | 477 | ofmatch->dl_src_mask[i] = ~match->wc.masks.dl_src[i]; |
410698cf BP |
478 | } |
479 | ||
81a76618 | 480 | memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN); |
410698cf | 481 | for (i = 0; i < ETH_ADDR_LEN; i++) { |
81a76618 | 482 | ofmatch->dl_dst_mask[i] = ~match->wc.masks.dl_dst[i]; |
410698cf BP |
483 | } |
484 | ||
81a76618 | 485 | if (match->wc.masks.vlan_tci == htons(0)) { |
410698cf | 486 | wc |= OFPFW11_DL_VLAN | OFPFW11_DL_VLAN_PCP; |
81a76618 BP |
487 | } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI) |
488 | && !(match->flow.vlan_tci & htons(VLAN_CFI))) { | |
489 | ofmatch->dl_vlan = htons(OFPVID11_NONE); | |
410698cf BP |
490 | wc |= OFPFW11_DL_VLAN_PCP; |
491 | } else { | |
81a76618 BP |
492 | if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) { |
493 | ofmatch->dl_vlan = htons(OFPVID11_ANY); | |
410698cf | 494 | } else { |
81a76618 | 495 | ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci)); |
410698cf BP |
496 | } |
497 | ||
81a76618 | 498 | if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) { |
410698cf BP |
499 | wc |= OFPFW11_DL_VLAN_PCP; |
500 | } else { | |
81a76618 | 501 | ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci); |
410698cf BP |
502 | } |
503 | } | |
504 | ||
81a76618 | 505 | if (!match->wc.masks.dl_type) { |
410698cf BP |
506 | wc |= OFPFW11_DL_TYPE; |
507 | } else { | |
81a76618 | 508 | ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type); |
410698cf BP |
509 | } |
510 | ||
81a76618 | 511 | if (!(match->wc.masks.nw_tos & IP_DSCP_MASK)) { |
410698cf BP |
512 | wc |= OFPFW11_NW_TOS; |
513 | } else { | |
81a76618 | 514 | ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK; |
410698cf BP |
515 | } |
516 | ||
81a76618 | 517 | if (!match->wc.masks.nw_proto) { |
410698cf BP |
518 | wc |= OFPFW11_NW_PROTO; |
519 | } else { | |
81a76618 | 520 | ofmatch->nw_proto = match->flow.nw_proto; |
410698cf BP |
521 | } |
522 | ||
81a76618 BP |
523 | ofmatch->nw_src = match->flow.nw_src; |
524 | ofmatch->nw_src_mask = ~match->wc.masks.nw_src; | |
525 | ofmatch->nw_dst = match->flow.nw_dst; | |
526 | ofmatch->nw_dst_mask = ~match->wc.masks.nw_dst; | |
410698cf | 527 | |
81a76618 | 528 | if (!match->wc.masks.tp_src) { |
410698cf BP |
529 | wc |= OFPFW11_TP_SRC; |
530 | } else { | |
81a76618 | 531 | ofmatch->tp_src = match->flow.tp_src; |
410698cf BP |
532 | } |
533 | ||
81a76618 | 534 | if (!match->wc.masks.tp_dst) { |
410698cf BP |
535 | wc |= OFPFW11_TP_DST; |
536 | } else { | |
81a76618 | 537 | ofmatch->tp_dst = match->flow.tp_dst; |
410698cf BP |
538 | } |
539 | ||
540 | /* MPLS not supported. */ | |
541 | wc |= OFPFW11_MPLS_LABEL; | |
542 | wc |= OFPFW11_MPLS_TC; | |
543 | ||
81a76618 BP |
544 | ofmatch->metadata = match->flow.metadata; |
545 | ofmatch->metadata_mask = ~match->wc.masks.metadata; | |
410698cf | 546 | |
81a76618 | 547 | ofmatch->wildcards = htonl(wc); |
410698cf BP |
548 | } |
549 | ||
36956a7d | 550 | /* Given a 'dl_type' value in the format used in struct flow, returns the |
eec25dc1 BP |
551 | * corresponding 'dl_type' value for use in an ofp10_match or ofp11_match |
552 | * structure. */ | |
36956a7d BP |
553 | ovs_be16 |
554 | ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type) | |
555 | { | |
556 | return (flow_dl_type == htons(FLOW_DL_TYPE_NONE) | |
557 | ? htons(OFP_DL_TYPE_NOT_ETH_TYPE) | |
558 | : flow_dl_type); | |
559 | } | |
560 | ||
eec25dc1 | 561 | /* Given a 'dl_type' value in the format used in an ofp10_match or ofp11_match |
36956a7d BP |
562 | * structure, returns the corresponding 'dl_type' value for use in struct |
563 | * flow. */ | |
564 | ovs_be16 | |
565 | ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type) | |
566 | { | |
567 | return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE) | |
568 | ? htons(FLOW_DL_TYPE_NONE) | |
569 | : ofp_dl_type); | |
570 | } | |
2e4f5fcf | 571 | \f |
27527aa0 | 572 | /* Protocols. */ |
7fa91113 | 573 | |
27527aa0 BP |
574 | struct proto_abbrev { |
575 | enum ofputil_protocol protocol; | |
576 | const char *name; | |
577 | }; | |
578 | ||
579 | /* Most users really don't care about some of the differences between | |
580 | * protocols. These abbreviations help with that. */ | |
581 | static const struct proto_abbrev proto_abbrevs[] = { | |
85813857 BP |
582 | { OFPUTIL_P_ANY, "any" }, |
583 | { OFPUTIL_P_OF10_STD_ANY, "OpenFlow10" }, | |
6d2c051a | 584 | { OFPUTIL_P_OF10_NXM_ANY, "NXM" }, |
e71bff1b | 585 | { OFPUTIL_P_ANY_OXM, "OXM" }, |
27527aa0 BP |
586 | }; |
587 | #define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs) | |
588 | ||
589 | enum ofputil_protocol ofputil_flow_dump_protocols[] = { | |
2e1ae200 | 590 | OFPUTIL_P_OF13_OXM, |
8d7785bd | 591 | OFPUTIL_P_OF12_OXM, |
85813857 BP |
592 | OFPUTIL_P_OF10_NXM, |
593 | OFPUTIL_P_OF10_STD, | |
27527aa0 BP |
594 | }; |
595 | size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols); | |
596 | ||
4f13da56 BP |
597 | /* Returns the set of ofputil_protocols that are supported with the given |
598 | * OpenFlow 'version'. 'version' should normally be an 8-bit OpenFlow version | |
599 | * identifier (e.g. 0x01 for OpenFlow 1.0, 0x02 for OpenFlow 1.1). Returns 0 | |
600 | * if 'version' is not supported or outside the valid range. */ | |
27527aa0 | 601 | enum ofputil_protocol |
4f13da56 | 602 | ofputil_protocols_from_ofp_version(enum ofp_version version) |
27527aa0 BP |
603 | { |
604 | switch (version) { | |
2e3fa633 | 605 | case OFP10_VERSION: |
4f13da56 | 606 | return OFPUTIL_P_OF10_STD_ANY | OFPUTIL_P_OF10_NXM_ANY; |
2e3fa633 | 607 | case OFP12_VERSION: |
85813857 | 608 | return OFPUTIL_P_OF12_OXM; |
2e1ae200 JR |
609 | case OFP13_VERSION: |
610 | return OFPUTIL_P_OF13_OXM; | |
2e3fa633 SH |
611 | case OFP11_VERSION: |
612 | default: | |
613 | return 0; | |
27527aa0 BP |
614 | } |
615 | } | |
616 | ||
4f13da56 BP |
617 | /* Returns the ofputil_protocol that is initially in effect on an OpenFlow |
618 | * connection that has negotiated the given 'version'. 'version' should | |
619 | * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow | |
620 | * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or | |
621 | * outside the valid range. */ | |
622 | enum ofputil_protocol | |
623 | ofputil_protocol_from_ofp_version(enum ofp_version version) | |
624 | { | |
625 | return rightmost_1bit(ofputil_protocols_from_ofp_version(version)); | |
626 | } | |
627 | ||
44d3732d | 628 | /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION, |
2e1ae200 | 629 | * etc.) that corresponds to 'protocol'. */ |
2e3fa633 | 630 | enum ofp_version |
9e1fd49b BP |
631 | ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol) |
632 | { | |
633 | switch (protocol) { | |
85813857 BP |
634 | case OFPUTIL_P_OF10_STD: |
635 | case OFPUTIL_P_OF10_STD_TID: | |
636 | case OFPUTIL_P_OF10_NXM: | |
637 | case OFPUTIL_P_OF10_NXM_TID: | |
9e1fd49b | 638 | return OFP10_VERSION; |
85813857 | 639 | case OFPUTIL_P_OF12_OXM: |
44d3732d | 640 | return OFP12_VERSION; |
2e1ae200 JR |
641 | case OFPUTIL_P_OF13_OXM: |
642 | return OFP13_VERSION; | |
9e1fd49b BP |
643 | } |
644 | ||
645 | NOT_REACHED(); | |
646 | } | |
647 | ||
4f13da56 BP |
648 | /* Returns a bitmap of OpenFlow versions that are supported by at |
649 | * least one of the 'protocols'. */ | |
650 | uint32_t | |
651 | ofputil_protocols_to_version_bitmap(enum ofputil_protocol protocols) | |
652 | { | |
653 | uint32_t bitmap = 0; | |
654 | ||
655 | for (; protocols; protocols = zero_rightmost_1bit(protocols)) { | |
656 | enum ofputil_protocol protocol = rightmost_1bit(protocols); | |
657 | ||
658 | bitmap |= 1u << ofputil_protocol_to_ofp_version(protocol); | |
659 | } | |
660 | ||
661 | return bitmap; | |
662 | } | |
663 | ||
664 | /* Returns the set of protocols that are supported on top of the | |
665 | * OpenFlow versions included in 'bitmap'. */ | |
666 | enum ofputil_protocol | |
667 | ofputil_protocols_from_version_bitmap(uint32_t bitmap) | |
668 | { | |
669 | enum ofputil_protocol protocols = 0; | |
670 | ||
671 | for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) { | |
672 | enum ofp_version version = rightmost_1bit_idx(bitmap); | |
673 | ||
674 | protocols |= ofputil_protocols_from_ofp_version(version); | |
675 | } | |
676 | ||
677 | return protocols; | |
678 | } | |
679 | ||
27527aa0 BP |
680 | /* Returns true if 'protocol' is a single OFPUTIL_P_* value, false |
681 | * otherwise. */ | |
7fa91113 | 682 | bool |
27527aa0 | 683 | ofputil_protocol_is_valid(enum ofputil_protocol protocol) |
7fa91113 | 684 | { |
27527aa0 BP |
685 | return protocol & OFPUTIL_P_ANY && is_pow2(protocol); |
686 | } | |
687 | ||
688 | /* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id | |
689 | * extension turned on or off if 'enable' is true or false, respectively. | |
690 | * | |
691 | * This extension is only useful for protocols whose "standard" version does | |
692 | * not allow specific tables to be modified. In particular, this is true of | |
693 | * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always | |
694 | * specifies a table ID and so there is no need for such an extension. When | |
695 | * 'protocol' is such a protocol that doesn't need a flow_mod_table_id | |
696 | * extension, this function just returns its 'protocol' argument unchanged | |
697 | * regardless of the value of 'enable'. */ | |
698 | enum ofputil_protocol | |
699 | ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable) | |
700 | { | |
701 | switch (protocol) { | |
85813857 BP |
702 | case OFPUTIL_P_OF10_STD: |
703 | case OFPUTIL_P_OF10_STD_TID: | |
704 | return enable ? OFPUTIL_P_OF10_STD_TID : OFPUTIL_P_OF10_STD; | |
27527aa0 | 705 | |
85813857 BP |
706 | case OFPUTIL_P_OF10_NXM: |
707 | case OFPUTIL_P_OF10_NXM_TID: | |
708 | return enable ? OFPUTIL_P_OF10_NXM_TID : OFPUTIL_P_OF10_NXM; | |
27527aa0 | 709 | |
85813857 BP |
710 | case OFPUTIL_P_OF12_OXM: |
711 | return OFPUTIL_P_OF12_OXM; | |
44d3732d | 712 | |
2e1ae200 JR |
713 | case OFPUTIL_P_OF13_OXM: |
714 | return OFPUTIL_P_OF13_OXM; | |
715 | ||
27527aa0 BP |
716 | default: |
717 | NOT_REACHED(); | |
7fa91113 | 718 | } |
27527aa0 | 719 | } |
7fa91113 | 720 | |
27527aa0 BP |
721 | /* Returns the "base" version of 'protocol'. That is, if 'protocol' includes |
722 | * some extension to a standard protocol version, the return value is the | |
723 | * standard version of that protocol without any extension. If 'protocol' is a | |
724 | * standard protocol version, returns 'protocol' unchanged. */ | |
725 | enum ofputil_protocol | |
726 | ofputil_protocol_to_base(enum ofputil_protocol protocol) | |
727 | { | |
728 | return ofputil_protocol_set_tid(protocol, false); | |
7fa91113 BP |
729 | } |
730 | ||
27527aa0 BP |
731 | /* Returns 'new_base' with any extensions taken from 'cur'. */ |
732 | enum ofputil_protocol | |
733 | ofputil_protocol_set_base(enum ofputil_protocol cur, | |
734 | enum ofputil_protocol new_base) | |
7fa91113 | 735 | { |
27527aa0 BP |
736 | bool tid = (cur & OFPUTIL_P_TID) != 0; |
737 | ||
738 | switch (new_base) { | |
85813857 BP |
739 | case OFPUTIL_P_OF10_STD: |
740 | case OFPUTIL_P_OF10_STD_TID: | |
741 | return ofputil_protocol_set_tid(OFPUTIL_P_OF10_STD, tid); | |
27527aa0 | 742 | |
85813857 BP |
743 | case OFPUTIL_P_OF10_NXM: |
744 | case OFPUTIL_P_OF10_NXM_TID: | |
745 | return ofputil_protocol_set_tid(OFPUTIL_P_OF10_NXM, tid); | |
27527aa0 | 746 | |
85813857 BP |
747 | case OFPUTIL_P_OF12_OXM: |
748 | return ofputil_protocol_set_tid(OFPUTIL_P_OF12_OXM, tid); | |
44d3732d | 749 | |
2e1ae200 JR |
750 | case OFPUTIL_P_OF13_OXM: |
751 | return ofputil_protocol_set_tid(OFPUTIL_P_OF13_OXM, tid); | |
752 | ||
7fa91113 BP |
753 | default: |
754 | NOT_REACHED(); | |
755 | } | |
756 | } | |
757 | ||
27527aa0 BP |
758 | /* Returns a string form of 'protocol', if a simple form exists (that is, if |
759 | * 'protocol' is either a single protocol or it is a combination of protocols | |
760 | * that have a single abbreviation). Otherwise, returns NULL. */ | |
761 | const char * | |
762 | ofputil_protocol_to_string(enum ofputil_protocol protocol) | |
88ca35ee | 763 | { |
27527aa0 BP |
764 | const struct proto_abbrev *p; |
765 | ||
766 | /* Use a "switch" statement for single-bit names so that we get a compiler | |
767 | * warning if we forget any. */ | |
768 | switch (protocol) { | |
85813857 | 769 | case OFPUTIL_P_OF10_NXM: |
27527aa0 BP |
770 | return "NXM-table_id"; |
771 | ||
85813857 | 772 | case OFPUTIL_P_OF10_NXM_TID: |
27527aa0 BP |
773 | return "NXM+table_id"; |
774 | ||
85813857 | 775 | case OFPUTIL_P_OF10_STD: |
27527aa0 BP |
776 | return "OpenFlow10-table_id"; |
777 | ||
85813857 | 778 | case OFPUTIL_P_OF10_STD_TID: |
27527aa0 | 779 | return "OpenFlow10+table_id"; |
44d3732d | 780 | |
85813857 | 781 | case OFPUTIL_P_OF12_OXM: |
e71bff1b | 782 | return "OXM-OpenFlow12"; |
2e1ae200 JR |
783 | |
784 | case OFPUTIL_P_OF13_OXM: | |
e71bff1b | 785 | return "OXM-OpenFlow13"; |
27527aa0 BP |
786 | } |
787 | ||
788 | /* Check abbreviations. */ | |
789 | for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) { | |
790 | if (protocol == p->protocol) { | |
791 | return p->name; | |
792 | } | |
793 | } | |
794 | ||
795 | return NULL; | |
796 | } | |
797 | ||
798 | /* Returns a string that represents 'protocols'. The return value might be a | |
799 | * comma-separated list if 'protocols' doesn't have a simple name. The return | |
800 | * value is "none" if 'protocols' is 0. | |
801 | * | |
802 | * The caller must free the returned string (with free()). */ | |
803 | char * | |
804 | ofputil_protocols_to_string(enum ofputil_protocol protocols) | |
805 | { | |
806 | struct ds s; | |
807 | ||
cb22974d | 808 | ovs_assert(!(protocols & ~OFPUTIL_P_ANY)); |
27527aa0 BP |
809 | if (protocols == 0) { |
810 | return xstrdup("none"); | |
811 | } | |
812 | ||
813 | ds_init(&s); | |
814 | while (protocols) { | |
815 | const struct proto_abbrev *p; | |
816 | int i; | |
817 | ||
818 | if (s.length) { | |
819 | ds_put_char(&s, ','); | |
820 | } | |
821 | ||
822 | for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) { | |
823 | if ((protocols & p->protocol) == p->protocol) { | |
824 | ds_put_cstr(&s, p->name); | |
825 | protocols &= ~p->protocol; | |
826 | goto match; | |
827 | } | |
828 | } | |
829 | ||
830 | for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) { | |
831 | enum ofputil_protocol bit = 1u << i; | |
832 | ||
833 | if (protocols & bit) { | |
834 | ds_put_cstr(&s, ofputil_protocol_to_string(bit)); | |
835 | protocols &= ~bit; | |
836 | goto match; | |
837 | } | |
838 | } | |
839 | NOT_REACHED(); | |
840 | ||
841 | match: ; | |
842 | } | |
843 | return ds_steal_cstr(&s); | |
844 | } | |
845 | ||
846 | static enum ofputil_protocol | |
847 | ofputil_protocol_from_string__(const char *s, size_t n) | |
848 | { | |
849 | const struct proto_abbrev *p; | |
850 | int i; | |
851 | ||
852 | for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) { | |
853 | enum ofputil_protocol bit = 1u << i; | |
854 | const char *name = ofputil_protocol_to_string(bit); | |
855 | ||
856 | if (name && n == strlen(name) && !strncasecmp(s, name, n)) { | |
857 | return bit; | |
858 | } | |
859 | } | |
860 | ||
861 | for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) { | |
862 | if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) { | |
863 | return p->protocol; | |
864 | } | |
865 | } | |
866 | ||
867 | return 0; | |
868 | } | |
869 | ||
870 | /* Returns the nonempty set of protocols represented by 's', which can be a | |
871 | * single protocol name or abbreviation or a comma-separated list of them. | |
872 | * | |
873 | * Aborts the program with an error message if 's' is invalid. */ | |
874 | enum ofputil_protocol | |
875 | ofputil_protocols_from_string(const char *s) | |
876 | { | |
877 | const char *orig_s = s; | |
878 | enum ofputil_protocol protocols; | |
879 | ||
880 | protocols = 0; | |
881 | while (*s) { | |
882 | enum ofputil_protocol p; | |
883 | size_t n; | |
884 | ||
885 | n = strcspn(s, ","); | |
886 | if (n == 0) { | |
887 | s++; | |
888 | continue; | |
889 | } | |
890 | ||
891 | p = ofputil_protocol_from_string__(s, n); | |
892 | if (!p) { | |
893 | ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s); | |
894 | } | |
895 | protocols |= p; | |
896 | ||
897 | s += n; | |
898 | } | |
899 | ||
900 | if (!protocols) { | |
901 | ovs_fatal(0, "%s: no flow protocol specified", orig_s); | |
902 | } | |
903 | return protocols; | |
88ca35ee BP |
904 | } |
905 | ||
7beaa082 | 906 | static int |
03e1125c SH |
907 | ofputil_version_from_string(const char *s) |
908 | { | |
909 | if (!strcasecmp(s, "OpenFlow10")) { | |
910 | return OFP10_VERSION; | |
911 | } | |
912 | if (!strcasecmp(s, "OpenFlow11")) { | |
913 | return OFP11_VERSION; | |
914 | } | |
915 | if (!strcasecmp(s, "OpenFlow12")) { | |
916 | return OFP12_VERSION; | |
917 | } | |
2e1ae200 JR |
918 | if (!strcasecmp(s, "OpenFlow13")) { |
919 | return OFP13_VERSION; | |
920 | } | |
7beaa082 | 921 | return 0; |
03e1125c SH |
922 | } |
923 | ||
924 | static bool | |
e091ef84 | 925 | is_delimiter(unsigned char c) |
03e1125c SH |
926 | { |
927 | return isspace(c) || c == ','; | |
928 | } | |
929 | ||
930 | uint32_t | |
931 | ofputil_versions_from_string(const char *s) | |
932 | { | |
933 | size_t i = 0; | |
934 | uint32_t bitmap = 0; | |
935 | ||
936 | while (s[i]) { | |
937 | size_t j; | |
7beaa082 | 938 | int version; |
03e1125c SH |
939 | char *key; |
940 | ||
941 | if (is_delimiter(s[i])) { | |
942 | i++; | |
943 | continue; | |
944 | } | |
945 | j = 0; | |
946 | while (s[i + j] && !is_delimiter(s[i + j])) { | |
947 | j++; | |
948 | } | |
949 | key = xmemdup0(s + i, j); | |
950 | version = ofputil_version_from_string(key); | |
7beaa082 SH |
951 | if (!version) { |
952 | VLOG_FATAL("Unknown OpenFlow version: \"%s\"", key); | |
953 | } | |
03e1125c SH |
954 | free(key); |
955 | bitmap |= 1u << version; | |
956 | i += j; | |
957 | } | |
958 | ||
959 | return bitmap; | |
960 | } | |
961 | ||
7beaa082 SH |
962 | uint32_t |
963 | ofputil_versions_from_strings(char ** const s, size_t count) | |
964 | { | |
965 | uint32_t bitmap = 0; | |
966 | ||
967 | while (count--) { | |
968 | int version = ofputil_version_from_string(s[count]); | |
969 | if (!version) { | |
970 | VLOG_WARN("Unknown OpenFlow version: \"%s\"", s[count]); | |
971 | } else { | |
972 | bitmap |= 1u << version; | |
973 | } | |
974 | } | |
975 | ||
976 | return bitmap; | |
977 | } | |
978 | ||
03e1125c SH |
979 | const char * |
980 | ofputil_version_to_string(enum ofp_version ofp_version) | |
981 | { | |
982 | switch (ofp_version) { | |
983 | case OFP10_VERSION: | |
984 | return "OpenFlow10"; | |
985 | case OFP11_VERSION: | |
986 | return "OpenFlow11"; | |
987 | case OFP12_VERSION: | |
988 | return "OpenFlow12"; | |
2e1ae200 JR |
989 | case OFP13_VERSION: |
990 | return "OpenFlow13"; | |
03e1125c SH |
991 | default: |
992 | NOT_REACHED(); | |
993 | } | |
994 | } | |
995 | ||
54834960 EJ |
996 | bool |
997 | ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format) | |
998 | { | |
999 | switch (packet_in_format) { | |
1000 | case NXPIF_OPENFLOW10: | |
1001 | case NXPIF_NXM: | |
1002 | return true; | |
1003 | } | |
1004 | ||
1005 | return false; | |
1006 | } | |
1007 | ||
1008 | const char * | |
1009 | ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format) | |
1010 | { | |
1011 | switch (packet_in_format) { | |
1012 | case NXPIF_OPENFLOW10: | |
1013 | return "openflow10"; | |
1014 | case NXPIF_NXM: | |
1015 | return "nxm"; | |
1016 | default: | |
1017 | NOT_REACHED(); | |
1018 | } | |
1019 | } | |
1020 | ||
1021 | int | |
1022 | ofputil_packet_in_format_from_string(const char *s) | |
1023 | { | |
1024 | return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10 | |
1025 | : !strcmp(s, "nxm") ? NXPIF_NXM | |
1026 | : -1); | |
1027 | } | |
1028 | ||
88ca35ee BP |
1029 | static bool |
1030 | regs_fully_wildcarded(const struct flow_wildcards *wc) | |
1031 | { | |
1032 | int i; | |
1033 | ||
1034 | for (i = 0; i < FLOW_N_REGS; i++) { | |
26720e24 | 1035 | if (wc->masks.regs[i] != 0) { |
88ca35ee BP |
1036 | return false; |
1037 | } | |
1038 | } | |
1039 | return true; | |
1040 | } | |
1041 | ||
81a76618 | 1042 | /* Returns a bit-mask of ofputil_protocols that can be used for sending 'match' |
27527aa0 BP |
1043 | * to a switch (e.g. to add or remove a flow). Only NXM can handle tunnel IDs, |
1044 | * registers, or fixing the Ethernet multicast bit. Otherwise, it's better to | |
1045 | * use OpenFlow 1.0 protocol for backward compatibility. */ | |
1046 | enum ofputil_protocol | |
81a76618 | 1047 | ofputil_usable_protocols(const struct match *match) |
8368c090 | 1048 | { |
81a76618 | 1049 | const struct flow_wildcards *wc = &match->wc; |
8368c090 | 1050 | |
cff78c88 | 1051 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 20); |
a877206f | 1052 | |
0ad90c84 JR |
1053 | /* These tunnel params can't be sent in a flow_mod */ |
1054 | if (wc->masks.tunnel.ip_ttl | |
1055 | || wc->masks.tunnel.ip_tos || wc->masks.tunnel.flags) { | |
4fe3445a PS |
1056 | return OFPUTIL_P_NONE; |
1057 | } | |
1058 | ||
1b567fb9 AA |
1059 | /* skb_mark and skb_priority can't be sent in a flow_mod */ |
1060 | if (wc->masks.skb_mark || wc->masks.skb_priority) { | |
1061 | return OFPUTIL_P_NONE; | |
1062 | } | |
1063 | ||
7cd90356 | 1064 | /* NXM, OXM, and OF1.1 support bitwise matching on ethernet addresses. */ |
26720e24 BP |
1065 | if (!eth_mask_is_exact(wc->masks.dl_src) |
1066 | && !eth_addr_is_zero(wc->masks.dl_src)) { | |
2e1ae200 JR |
1067 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1068 | | OFPUTIL_P_OF13_OXM; | |
73c0ce34 | 1069 | } |
26720e24 BP |
1070 | if (!eth_mask_is_exact(wc->masks.dl_dst) |
1071 | && !eth_addr_is_zero(wc->masks.dl_dst)) { | |
2e1ae200 JR |
1072 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1073 | | OFPUTIL_P_OF13_OXM; | |
8368c090 BP |
1074 | } |
1075 | ||
7cd90356 | 1076 | /* NXM, OXM, and OF1.1+ support matching metadata. */ |
26720e24 | 1077 | if (wc->masks.metadata != htonll(0)) { |
2e1ae200 JR |
1078 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1079 | | OFPUTIL_P_OF13_OXM; | |
969fc56c JS |
1080 | } |
1081 | ||
7cd90356 | 1082 | /* NXM and OXM support matching ARP hardware addresses. */ |
26720e24 BP |
1083 | if (!eth_addr_is_zero(wc->masks.arp_sha) || |
1084 | !eth_addr_is_zero(wc->masks.arp_tha)) { | |
2e1ae200 JR |
1085 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1086 | | OFPUTIL_P_OF13_OXM; | |
bad68a99 JP |
1087 | } |
1088 | ||
7cd90356 | 1089 | /* NXM and OXM support matching IPv6 traffic. */ |
81a76618 | 1090 | if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) { |
2e1ae200 JR |
1091 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1092 | | OFPUTIL_P_OF13_OXM; | |
d31f1109 JP |
1093 | } |
1094 | ||
7cd90356 | 1095 | /* NXM and OXM support matching registers. */ |
8368c090 | 1096 | if (!regs_fully_wildcarded(wc)) { |
2e1ae200 JR |
1097 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1098 | | OFPUTIL_P_OF13_OXM; | |
8368c090 BP |
1099 | } |
1100 | ||
0ad90c84 JR |
1101 | /* NXM and OXM support matching tun_id, tun_src, and tun_dst. */ |
1102 | if (wc->masks.tunnel.tun_id != htonll(0) | |
1103 | || wc->masks.tunnel.ip_src != htonl(0) | |
1104 | || wc->masks.tunnel.ip_dst != htonl(0)) { | |
2e1ae200 JR |
1105 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1106 | | OFPUTIL_P_OF13_OXM; | |
8368c090 BP |
1107 | } |
1108 | ||
7cd90356 | 1109 | /* NXM and OXM support matching fragments. */ |
26720e24 | 1110 | if (wc->masks.nw_frag) { |
2e1ae200 JR |
1111 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1112 | | OFPUTIL_P_OF13_OXM; | |
7257b535 BP |
1113 | } |
1114 | ||
7cd90356 | 1115 | /* NXM and OXM support matching IPv6 flow label. */ |
26720e24 | 1116 | if (wc->masks.ipv6_label) { |
2e1ae200 JR |
1117 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1118 | | OFPUTIL_P_OF13_OXM; | |
fa8223b7 JP |
1119 | } |
1120 | ||
7cd90356 | 1121 | /* NXM and OXM support matching IP ECN bits. */ |
26720e24 | 1122 | if (wc->masks.nw_tos & IP_ECN_MASK) { |
2e1ae200 JR |
1123 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1124 | | OFPUTIL_P_OF13_OXM; | |
530180fd JP |
1125 | } |
1126 | ||
7cd90356 | 1127 | /* NXM and OXM support matching IP TTL/hop limit. */ |
26720e24 | 1128 | if (wc->masks.nw_ttl) { |
2e1ae200 JR |
1129 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1130 | | OFPUTIL_P_OF13_OXM; | |
a61680c6 JP |
1131 | } |
1132 | ||
7cd90356 | 1133 | /* NXM and OXM support non-CIDR IPv4 address masks. */ |
26720e24 | 1134 | if (!ip_is_cidr(wc->masks.nw_src) || !ip_is_cidr(wc->masks.nw_dst)) { |
2e1ae200 JR |
1135 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1136 | | OFPUTIL_P_OF13_OXM; | |
c08201d6 BP |
1137 | } |
1138 | ||
7cd90356 | 1139 | /* NXM and OXM support bitwise matching on transport port. */ |
26720e24 BP |
1140 | if ((wc->masks.tp_src && wc->masks.tp_src != htons(UINT16_MAX)) || |
1141 | (wc->masks.tp_dst && wc->masks.tp_dst != htons(UINT16_MAX))) { | |
2e1ae200 JR |
1142 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1143 | | OFPUTIL_P_OF13_OXM; | |
73f33563 BP |
1144 | } |
1145 | ||
b02475c5 SH |
1146 | /* NXM and OF1.1+ support matching MPLS label */ |
1147 | if (wc->masks.mpls_lse & htonl(MPLS_LABEL_MASK)) { | |
1148 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM | |
1149 | | OFPUTIL_P_OF13_OXM; | |
1150 | } | |
1151 | ||
1152 | /* NXM and OF1.1+ support matching MPLS TC */ | |
1153 | if (wc->masks.mpls_lse & htonl(MPLS_TC_MASK)) { | |
1154 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM | |
1155 | | OFPUTIL_P_OF13_OXM; | |
1156 | } | |
1157 | ||
1158 | /* NXM and OF1.3+ support matching MPLS stack flag */ | |
1159 | /* Allow for OF1.2 as there doesn't seem to be a | |
1160 | * particularly good reason not to */ | |
1161 | if (wc->masks.mpls_lse & htonl(MPLS_BOS_MASK)) { | |
1162 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM | |
1163 | | OFPUTIL_P_OF13_OXM; | |
1164 | } | |
1165 | ||
8368c090 | 1166 | /* Other formats can express this rule. */ |
27527aa0 BP |
1167 | return OFPUTIL_P_ANY; |
1168 | } | |
1169 | ||
03e1125c SH |
1170 | void |
1171 | ofputil_format_version(struct ds *msg, enum ofp_version version) | |
1172 | { | |
8989046d | 1173 | ds_put_format(msg, "0x%02x", version); |
03e1125c SH |
1174 | } |
1175 | ||
1176 | void | |
1177 | ofputil_format_version_name(struct ds *msg, enum ofp_version version) | |
1178 | { | |
1179 | ds_put_cstr(msg, ofputil_version_to_string(version)); | |
1180 | } | |
1181 | ||
1182 | static void | |
1183 | ofputil_format_version_bitmap__(struct ds *msg, uint32_t bitmap, | |
1184 | void (*format_version)(struct ds *msg, | |
1185 | enum ofp_version)) | |
1186 | { | |
1187 | while (bitmap) { | |
1188 | format_version(msg, raw_ctz(bitmap)); | |
1189 | bitmap = zero_rightmost_1bit(bitmap); | |
1190 | if (bitmap) { | |
1191 | ds_put_cstr(msg, ", "); | |
1192 | } | |
1193 | } | |
1194 | } | |
1195 | ||
1196 | void | |
1197 | ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap) | |
1198 | { | |
1199 | ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version); | |
1200 | } | |
1201 | ||
1202 | void | |
1203 | ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap) | |
1204 | { | |
1205 | ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version_name); | |
1206 | } | |
1207 | ||
de6c85b0 SH |
1208 | static bool |
1209 | ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh, | |
0935de41 | 1210 | uint32_t *allowed_versionsp) |
de6c85b0 SH |
1211 | { |
1212 | uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh; | |
1213 | const ovs_be32 *bitmap = (const ovs_be32 *) (oheh + 1); | |
0935de41 | 1214 | uint32_t allowed_versions; |
de6c85b0 SH |
1215 | |
1216 | if (!bitmap_len || bitmap_len % sizeof *bitmap) { | |
1217 | return false; | |
1218 | } | |
1219 | ||
1220 | /* Only use the first 32-bit element of the bitmap as that is all the | |
1221 | * current implementation supports. Subsequent elements are ignored which | |
1222 | * should have no effect on session negotiation until Open vSwtich supports | |
1223 | * wire-protocol versions greater than 31. | |
1224 | */ | |
0935de41 | 1225 | allowed_versions = ntohl(bitmap[0]); |
de6c85b0 | 1226 | |
0935de41 | 1227 | if (allowed_versions & 1) { |
de6c85b0 SH |
1228 | /* There's no OpenFlow version 0. */ |
1229 | VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow " | |
1230 | "version 0x00"); | |
0935de41 | 1231 | allowed_versions &= ~1u; |
de6c85b0 SH |
1232 | } |
1233 | ||
0935de41 | 1234 | if (!allowed_versions) { |
de6c85b0 SH |
1235 | VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow " |
1236 | "version (between 0x01 and 0x1f)"); | |
1237 | return false; | |
1238 | } | |
1239 | ||
0935de41 | 1240 | *allowed_versionsp = allowed_versions; |
de6c85b0 SH |
1241 | return true; |
1242 | } | |
1243 | ||
1244 | static uint32_t | |
1245 | version_bitmap_from_version(uint8_t ofp_version) | |
1246 | { | |
1247 | return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1; | |
1248 | } | |
1249 | ||
1250 | /* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions' | |
1251 | * the set of OpenFlow versions for which 'oh' announces support. | |
1252 | * | |
1253 | * Because of how OpenFlow defines OFPT_HELLO messages, this function is always | |
1254 | * successful, and thus '*allowed_versions' is always initialized. However, it | |
1255 | * returns false if 'oh' contains some data that could not be fully understood, | |
1256 | * true if 'oh' was completely parsed. */ | |
1257 | bool | |
1258 | ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions) | |
1259 | { | |
1260 | struct ofpbuf msg; | |
1261 | bool ok = true; | |
1262 | ||
1263 | ofpbuf_use_const(&msg, oh, ntohs(oh->length)); | |
1264 | ofpbuf_pull(&msg, sizeof *oh); | |
1265 | ||
1266 | *allowed_versions = version_bitmap_from_version(oh->version); | |
1267 | while (msg.size) { | |
1268 | const struct ofp_hello_elem_header *oheh; | |
1269 | unsigned int len; | |
1270 | ||
1271 | if (msg.size < sizeof *oheh) { | |
1272 | return false; | |
1273 | } | |
1274 | ||
1275 | oheh = msg.data; | |
1276 | len = ntohs(oheh->length); | |
1277 | if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) { | |
1278 | return false; | |
1279 | } | |
1280 | ||
1281 | if (oheh->type != htons(OFPHET_VERSIONBITMAP) | |
1282 | || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) { | |
1283 | ok = false; | |
1284 | } | |
1285 | } | |
1286 | ||
1287 | return ok; | |
1288 | } | |
1289 | ||
1290 | /* Returns true if 'allowed_versions' needs to be accompanied by a version | |
1291 | * bitmap to be correctly expressed in an OFPT_HELLO message. */ | |
1292 | static inline bool | |
1293 | should_send_version_bitmap(uint32_t allowed_versions) | |
1294 | { | |
1295 | return !is_pow2((allowed_versions >> 1) + 1); | |
1296 | } | |
1297 | ||
1298 | /* Create an OFPT_HELLO message that expresses support for the OpenFlow | |
1299 | * versions in the 'allowed_versions' bitmaps and returns the message. */ | |
1300 | struct ofpbuf * | |
1301 | ofputil_encode_hello(uint32_t allowed_versions) | |
1302 | { | |
1303 | enum ofp_version ofp_version; | |
1304 | struct ofpbuf *msg; | |
1305 | ||
1306 | ofp_version = leftmost_1bit_idx(allowed_versions); | |
1307 | msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0); | |
1308 | ||
1309 | if (should_send_version_bitmap(allowed_versions)) { | |
1310 | struct ofp_hello_elem_header *oheh; | |
1311 | uint16_t map_len; | |
1312 | ||
74c4b9c1 | 1313 | map_len = sizeof allowed_versions; |
de6c85b0 SH |
1314 | oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8)); |
1315 | oheh->type = htons(OFPHET_VERSIONBITMAP); | |
1316 | oheh->length = htons(map_len + sizeof *oheh); | |
1317 | *(ovs_be32 *)(oheh + 1) = htonl(allowed_versions); | |
1804d25a BP |
1318 | |
1319 | ofpmsg_update_length(msg); | |
de6c85b0 SH |
1320 | } |
1321 | ||
1322 | return msg; | |
1323 | } | |
1324 | ||
27527aa0 BP |
1325 | /* Returns an OpenFlow message that, sent on an OpenFlow connection whose |
1326 | * protocol is 'current', at least partly transitions the protocol to 'want'. | |
1327 | * Stores in '*next' the protocol that will be in effect on the OpenFlow | |
1328 | * connection if the switch processes the returned message correctly. (If | |
1329 | * '*next != want' then the caller will have to iterate.) | |
1330 | * | |
e43928f2 BP |
1331 | * If 'current == want', or if it is not possible to transition from 'current' |
1332 | * to 'want' (because, for example, 'current' and 'want' use different OpenFlow | |
1333 | * protocol versions), returns NULL and stores 'current' in '*next'. */ | |
27527aa0 BP |
1334 | struct ofpbuf * |
1335 | ofputil_encode_set_protocol(enum ofputil_protocol current, | |
1336 | enum ofputil_protocol want, | |
1337 | enum ofputil_protocol *next) | |
1338 | { | |
e43928f2 | 1339 | enum ofp_version cur_version, want_version; |
27527aa0 BP |
1340 | enum ofputil_protocol cur_base, want_base; |
1341 | bool cur_tid, want_tid; | |
1342 | ||
e43928f2 BP |
1343 | cur_version = ofputil_protocol_to_ofp_version(current); |
1344 | want_version = ofputil_protocol_to_ofp_version(want); | |
1345 | if (cur_version != want_version) { | |
1346 | *next = current; | |
1347 | return NULL; | |
1348 | } | |
1349 | ||
27527aa0 BP |
1350 | cur_base = ofputil_protocol_to_base(current); |
1351 | want_base = ofputil_protocol_to_base(want); | |
1352 | if (cur_base != want_base) { | |
1353 | *next = ofputil_protocol_set_base(current, want_base); | |
1354 | ||
1355 | switch (want_base) { | |
85813857 | 1356 | case OFPUTIL_P_OF10_NXM: |
27527aa0 BP |
1357 | return ofputil_encode_nx_set_flow_format(NXFF_NXM); |
1358 | ||
85813857 | 1359 | case OFPUTIL_P_OF10_STD: |
27527aa0 BP |
1360 | return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10); |
1361 | ||
85813857 | 1362 | case OFPUTIL_P_OF12_OXM: |
2e1ae200 JR |
1363 | case OFPUTIL_P_OF13_OXM: |
1364 | /* There are only one of each OpenFlow 1.2+ protocols and we already | |
1365 | * verified above that we're not trying to change versions. */ | |
310f3699 | 1366 | NOT_REACHED(); |
44d3732d | 1367 | |
85813857 BP |
1368 | case OFPUTIL_P_OF10_STD_TID: |
1369 | case OFPUTIL_P_OF10_NXM_TID: | |
27527aa0 BP |
1370 | NOT_REACHED(); |
1371 | } | |
1372 | } | |
1373 | ||
1374 | cur_tid = (current & OFPUTIL_P_TID) != 0; | |
1375 | want_tid = (want & OFPUTIL_P_TID) != 0; | |
1376 | if (cur_tid != want_tid) { | |
1377 | *next = ofputil_protocol_set_tid(current, want_tid); | |
1378 | return ofputil_make_flow_mod_table_id(want_tid); | |
1379 | } | |
1380 | ||
cb22974d | 1381 | ovs_assert(current == want); |
27527aa0 BP |
1382 | |
1383 | *next = current; | |
1384 | return NULL; | |
88ca35ee BP |
1385 | } |
1386 | ||
27527aa0 BP |
1387 | /* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow |
1388 | * format to 'nxff'. */ | |
88ca35ee | 1389 | struct ofpbuf * |
27527aa0 | 1390 | ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff) |
88ca35ee | 1391 | { |
73dbf4ab | 1392 | struct nx_set_flow_format *sff; |
88ca35ee BP |
1393 | struct ofpbuf *msg; |
1394 | ||
cb22974d | 1395 | ovs_assert(ofputil_nx_flow_format_is_valid(nxff)); |
27527aa0 | 1396 | |
982697a4 BP |
1397 | msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0); |
1398 | sff = ofpbuf_put_zeros(msg, sizeof *sff); | |
27527aa0 | 1399 | sff->format = htonl(nxff); |
88ca35ee BP |
1400 | |
1401 | return msg; | |
1402 | } | |
1403 | ||
27527aa0 BP |
1404 | /* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false |
1405 | * otherwise. */ | |
1406 | enum ofputil_protocol | |
1407 | ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format) | |
1408 | { | |
1409 | switch (flow_format) { | |
1410 | case NXFF_OPENFLOW10: | |
85813857 | 1411 | return OFPUTIL_P_OF10_STD; |
27527aa0 BP |
1412 | |
1413 | case NXFF_NXM: | |
85813857 | 1414 | return OFPUTIL_P_OF10_NXM; |
27527aa0 BP |
1415 | |
1416 | default: | |
1417 | return 0; | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | /* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */ | |
1422 | bool | |
1423 | ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format) | |
1424 | { | |
1425 | return ofputil_nx_flow_format_to_protocol(flow_format) != 0; | |
1426 | } | |
1427 | ||
1428 | /* Returns a string version of 'flow_format', which must be a valid NXFF_* | |
1429 | * value. */ | |
1430 | const char * | |
1431 | ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format) | |
1432 | { | |
1433 | switch (flow_format) { | |
1434 | case NXFF_OPENFLOW10: | |
1435 | return "openflow10"; | |
1436 | case NXFF_NXM: | |
1437 | return "nxm"; | |
1438 | default: | |
1439 | NOT_REACHED(); | |
1440 | } | |
1441 | } | |
1442 | ||
54834960 | 1443 | struct ofpbuf * |
3f4a1939 SH |
1444 | ofputil_make_set_packet_in_format(enum ofp_version ofp_version, |
1445 | enum nx_packet_in_format packet_in_format) | |
54834960 | 1446 | { |
73dbf4ab | 1447 | struct nx_set_packet_in_format *spif; |
54834960 EJ |
1448 | struct ofpbuf *msg; |
1449 | ||
3f4a1939 | 1450 | msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0); |
982697a4 | 1451 | spif = ofpbuf_put_zeros(msg, sizeof *spif); |
54834960 EJ |
1452 | spif->format = htonl(packet_in_format); |
1453 | ||
1454 | return msg; | |
1455 | } | |
1456 | ||
6c1491fb BP |
1457 | /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id |
1458 | * extension on or off (according to 'flow_mod_table_id'). */ | |
1459 | struct ofpbuf * | |
1460 | ofputil_make_flow_mod_table_id(bool flow_mod_table_id) | |
1461 | { | |
73dbf4ab | 1462 | struct nx_flow_mod_table_id *nfmti; |
6c1491fb BP |
1463 | struct ofpbuf *msg; |
1464 | ||
982697a4 BP |
1465 | msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0); |
1466 | nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti); | |
6c1491fb BP |
1467 | nfmti->set = flow_mod_table_id; |
1468 | return msg; | |
1469 | } | |
1470 | ||
7fa91113 BP |
1471 | /* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract |
1472 | * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error | |
1473 | * code. | |
1474 | * | |
f25d0cf3 BP |
1475 | * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions. |
1476 | * The caller must initialize 'ofpacts' and retains ownership of it. | |
1477 | * 'fm->ofpacts' will point into the 'ofpacts' buffer. | |
1478 | * | |
1479 | * Does not validate the flow_mod actions. The caller should do that, with | |
1480 | * ofpacts_check(). */ | |
90bf1e07 | 1481 | enum ofperr |
a9a2da38 | 1482 | ofputil_decode_flow_mod(struct ofputil_flow_mod *fm, |
27527aa0 | 1483 | const struct ofp_header *oh, |
f25d0cf3 BP |
1484 | enum ofputil_protocol protocol, |
1485 | struct ofpbuf *ofpacts) | |
2e4f5fcf | 1486 | { |
6c1491fb | 1487 | uint16_t command; |
2e4f5fcf | 1488 | struct ofpbuf b; |
982697a4 | 1489 | enum ofpraw raw; |
2e4f5fcf | 1490 | |
2013493b | 1491 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
982697a4 | 1492 | raw = ofpraw_pull_assert(&b); |
aa319503 | 1493 | if (raw == OFPRAW_OFPT11_FLOW_MOD) { |
982697a4 | 1494 | /* Standard OpenFlow 1.1 flow_mod. */ |
aa319503 | 1495 | const struct ofp11_flow_mod *ofm; |
90bf1e07 | 1496 | enum ofperr error; |
2e4f5fcf | 1497 | |
bbc32a88 | 1498 | ofm = ofpbuf_pull(&b, sizeof *ofm); |
2e4f5fcf | 1499 | |
81a76618 | 1500 | error = ofputil_pull_ofp11_match(&b, &fm->match, NULL); |
aa319503 BP |
1501 | if (error) { |
1502 | return error; | |
1c0b7503 BP |
1503 | } |
1504 | ||
aa319503 | 1505 | error = ofpacts_pull_openflow11_instructions(&b, b.size, ofpacts); |
f25d0cf3 BP |
1506 | if (error) { |
1507 | return error; | |
1508 | } | |
1509 | ||
2e4f5fcf | 1510 | /* Translate the message. */ |
81a76618 | 1511 | fm->priority = ntohs(ofm->priority); |
aa319503 BP |
1512 | if (ofm->command == OFPFC_ADD) { |
1513 | fm->cookie = htonll(0); | |
1514 | fm->cookie_mask = htonll(0); | |
1515 | fm->new_cookie = ofm->cookie; | |
1516 | } else { | |
aa319503 BP |
1517 | fm->cookie = ofm->cookie; |
1518 | fm->cookie_mask = ofm->cookie_mask; | |
1519 | fm->new_cookie = htonll(UINT64_MAX); | |
1520 | } | |
1521 | fm->command = ofm->command; | |
1522 | fm->table_id = ofm->table_id; | |
2e4f5fcf BP |
1523 | fm->idle_timeout = ntohs(ofm->idle_timeout); |
1524 | fm->hard_timeout = ntohs(ofm->hard_timeout); | |
1525 | fm->buffer_id = ntohl(ofm->buffer_id); | |
aa319503 | 1526 | error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port); |
2e4f5fcf BP |
1527 | if (error) { |
1528 | return error; | |
1529 | } | |
09861c3f JR |
1530 | if ((ofm->command == OFPFC_DELETE |
1531 | || ofm->command == OFPFC_DELETE_STRICT) | |
1532 | && ofm->out_group != htonl(OFPG_ANY)) { | |
fb9515e1 | 1533 | return OFPERR_OFPFMFC_UNKNOWN; |
2e4f5fcf | 1534 | } |
aa319503 BP |
1535 | fm->flags = ntohs(ofm->flags); |
1536 | } else { | |
1537 | if (raw == OFPRAW_OFPT10_FLOW_MOD) { | |
1538 | /* Standard OpenFlow 1.0 flow_mod. */ | |
1539 | const struct ofp10_flow_mod *ofm; | |
aa319503 BP |
1540 | enum ofperr error; |
1541 | ||
1542 | /* Get the ofp10_flow_mod. */ | |
1543 | ofm = ofpbuf_pull(&b, sizeof *ofm); | |
1544 | ||
aa319503 | 1545 | /* Translate the rule. */ |
81a76618 BP |
1546 | ofputil_match_from_ofp10_match(&ofm->match, &fm->match); |
1547 | ofputil_normalize_match(&fm->match); | |
aa319503 BP |
1548 | |
1549 | /* Now get the actions. */ | |
1550 | error = ofpacts_pull_openflow10(&b, b.size, ofpacts); | |
1551 | if (error) { | |
1552 | return error; | |
1553 | } | |
1554 | ||
81a76618 BP |
1555 | /* OpenFlow 1.0 says that exact-match rules have to have the |
1556 | * highest possible priority. */ | |
1557 | fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL) | |
1558 | ? ntohs(ofm->priority) | |
1559 | : UINT16_MAX); | |
1560 | ||
aa319503 BP |
1561 | /* Translate the message. */ |
1562 | command = ntohs(ofm->command); | |
1563 | fm->cookie = htonll(0); | |
1564 | fm->cookie_mask = htonll(0); | |
1565 | fm->new_cookie = ofm->cookie; | |
1566 | fm->idle_timeout = ntohs(ofm->idle_timeout); | |
1567 | fm->hard_timeout = ntohs(ofm->hard_timeout); | |
1568 | fm->buffer_id = ntohl(ofm->buffer_id); | |
1569 | fm->out_port = ntohs(ofm->out_port); | |
1570 | fm->flags = ntohs(ofm->flags); | |
1571 | } else if (raw == OFPRAW_NXT_FLOW_MOD) { | |
1572 | /* Nicira extended flow_mod. */ | |
1573 | const struct nx_flow_mod *nfm; | |
1574 | enum ofperr error; | |
1575 | ||
1576 | /* Dissect the message. */ | |
1577 | nfm = ofpbuf_pull(&b, sizeof *nfm); | |
81a76618 BP |
1578 | error = nx_pull_match(&b, ntohs(nfm->match_len), |
1579 | &fm->match, &fm->cookie, &fm->cookie_mask); | |
aa319503 BP |
1580 | if (error) { |
1581 | return error; | |
1582 | } | |
1583 | error = ofpacts_pull_openflow10(&b, b.size, ofpacts); | |
1584 | if (error) { | |
1585 | return error; | |
1586 | } | |
1587 | ||
1588 | /* Translate the message. */ | |
1589 | command = ntohs(nfm->command); | |
1590 | if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) { | |
1591 | /* Flow additions may only set a new cookie, not match an | |
1592 | * existing cookie. */ | |
1593 | return OFPERR_NXBRC_NXM_INVALID; | |
1594 | } | |
81a76618 | 1595 | fm->priority = ntohs(nfm->priority); |
aa319503 BP |
1596 | fm->new_cookie = nfm->cookie; |
1597 | fm->idle_timeout = ntohs(nfm->idle_timeout); | |
1598 | fm->hard_timeout = ntohs(nfm->hard_timeout); | |
1599 | fm->buffer_id = ntohl(nfm->buffer_id); | |
1600 | fm->out_port = ntohs(nfm->out_port); | |
1601 | fm->flags = ntohs(nfm->flags); | |
1602 | } else { | |
1603 | NOT_REACHED(); | |
1604 | } | |
1605 | ||
2e1ae200 JR |
1606 | if (fm->flags & OFPFF10_EMERG) { |
1607 | /* We do not support the OpenFlow 1.0 emergency flow cache, which | |
1608 | * is not required in OpenFlow 1.0.1 and removed from OpenFlow 1.1. | |
b5bf17dd BP |
1609 | * |
1610 | * OpenFlow 1.0 specifies the error code to use when idle_timeout | |
1611 | * or hard_timeout is nonzero. Otherwise, there is no good error | |
1612 | * code, so just state that the flow table is full. */ | |
1613 | return (fm->hard_timeout || fm->idle_timeout | |
1614 | ? OFPERR_OFPFMFC_BAD_EMERG_TIMEOUT | |
1615 | : OFPERR_OFPFMFC_TABLE_FULL); | |
2e1ae200 JR |
1616 | } |
1617 | ||
aa319503 BP |
1618 | if (protocol & OFPUTIL_P_TID) { |
1619 | fm->command = command & 0xff; | |
1620 | fm->table_id = command >> 8; | |
1621 | } else { | |
1622 | fm->command = command; | |
1623 | fm->table_id = 0xff; | |
e729e793 | 1624 | } |
2e4f5fcf BP |
1625 | } |
1626 | ||
f25d0cf3 BP |
1627 | fm->ofpacts = ofpacts->data; |
1628 | fm->ofpacts_len = ofpacts->size; | |
6c1491fb | 1629 | |
2e4f5fcf BP |
1630 | return 0; |
1631 | } | |
1632 | ||
aa6305ea SH |
1633 | static ovs_be16 |
1634 | ofputil_tid_command(const struct ofputil_flow_mod *fm, | |
1635 | enum ofputil_protocol protocol) | |
1636 | { | |
1637 | return htons(protocol & OFPUTIL_P_TID | |
1638 | ? (fm->command & 0xff) | (fm->table_id << 8) | |
1639 | : fm->command); | |
1640 | } | |
1641 | ||
2e4f5fcf | 1642 | /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to |
6cbe2c0f | 1643 | * 'protocol' and returns the message. */ |
2e4f5fcf | 1644 | struct ofpbuf * |
a9a2da38 | 1645 | ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm, |
27527aa0 | 1646 | enum ofputil_protocol protocol) |
2e4f5fcf | 1647 | { |
2e4f5fcf BP |
1648 | struct ofpbuf *msg; |
1649 | ||
27527aa0 | 1650 | switch (protocol) { |
2e1ae200 JR |
1651 | case OFPUTIL_P_OF12_OXM: |
1652 | case OFPUTIL_P_OF13_OXM: { | |
aa6305ea SH |
1653 | struct ofp11_flow_mod *ofm; |
1654 | ||
2e1ae200 JR |
1655 | msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, |
1656 | ofputil_protocol_to_ofp_version(protocol), | |
aa6305ea SH |
1657 | NXM_TYPICAL_LEN + fm->ofpacts_len); |
1658 | ofm = ofpbuf_put_zeros(msg, sizeof *ofm); | |
a5ff8823 SH |
1659 | if (fm->command == OFPFC_ADD) { |
1660 | ofm->cookie = fm->new_cookie; | |
1661 | } else { | |
1662 | ofm->cookie = fm->cookie; | |
1663 | } | |
aa6305ea SH |
1664 | ofm->cookie_mask = fm->cookie_mask; |
1665 | ofm->table_id = fm->table_id; | |
1666 | ofm->command = fm->command; | |
1667 | ofm->idle_timeout = htons(fm->idle_timeout); | |
1668 | ofm->hard_timeout = htons(fm->hard_timeout); | |
81a76618 | 1669 | ofm->priority = htons(fm->priority); |
aa6305ea SH |
1670 | ofm->buffer_id = htonl(fm->buffer_id); |
1671 | ofm->out_port = ofputil_port_to_ofp11(fm->out_port); | |
1672 | ofm->out_group = htonl(OFPG11_ANY); | |
1673 | ofm->flags = htons(fm->flags); | |
81a76618 | 1674 | oxm_put_match(msg, &fm->match); |
5b289eaf | 1675 | ofpacts_put_openflow11_instructions(fm->ofpacts, fm->ofpacts_len, msg); |
aa6305ea SH |
1676 | break; |
1677 | } | |
1678 | ||
85813857 BP |
1679 | case OFPUTIL_P_OF10_STD: |
1680 | case OFPUTIL_P_OF10_STD_TID: { | |
3f192f23 SH |
1681 | struct ofp10_flow_mod *ofm; |
1682 | ||
982697a4 BP |
1683 | msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION, |
1684 | fm->ofpacts_len); | |
1685 | ofm = ofpbuf_put_zeros(msg, sizeof *ofm); | |
81a76618 | 1686 | ofputil_match_to_ofp10_match(&fm->match, &ofm->match); |
623e1caf | 1687 | ofm->cookie = fm->new_cookie; |
aa6305ea | 1688 | ofm->command = ofputil_tid_command(fm, protocol); |
2e4f5fcf BP |
1689 | ofm->idle_timeout = htons(fm->idle_timeout); |
1690 | ofm->hard_timeout = htons(fm->hard_timeout); | |
81a76618 | 1691 | ofm->priority = htons(fm->priority); |
2e4f5fcf BP |
1692 | ofm->buffer_id = htonl(fm->buffer_id); |
1693 | ofm->out_port = htons(fm->out_port); | |
1694 | ofm->flags = htons(fm->flags); | |
5b289eaf | 1695 | ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg); |
27527aa0 | 1696 | break; |
3f192f23 | 1697 | } |
2e4f5fcf | 1698 | |
85813857 BP |
1699 | case OFPUTIL_P_OF10_NXM: |
1700 | case OFPUTIL_P_OF10_NXM_TID: { | |
3f192f23 SH |
1701 | struct nx_flow_mod *nfm; |
1702 | int match_len; | |
1703 | ||
982697a4 BP |
1704 | msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION, |
1705 | NXM_TYPICAL_LEN + fm->ofpacts_len); | |
1706 | nfm = ofpbuf_put_zeros(msg, sizeof *nfm); | |
aa6305ea | 1707 | nfm->command = ofputil_tid_command(fm, protocol); |
623e1caf | 1708 | nfm->cookie = fm->new_cookie; |
81a76618 | 1709 | match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask); |
982697a4 | 1710 | nfm = msg->l3; |
2e4f5fcf BP |
1711 | nfm->idle_timeout = htons(fm->idle_timeout); |
1712 | nfm->hard_timeout = htons(fm->hard_timeout); | |
81a76618 | 1713 | nfm->priority = htons(fm->priority); |
2e4f5fcf BP |
1714 | nfm->buffer_id = htonl(fm->buffer_id); |
1715 | nfm->out_port = htons(fm->out_port); | |
1716 | nfm->flags = htons(fm->flags); | |
1717 | nfm->match_len = htons(match_len); | |
5b289eaf | 1718 | ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg); |
27527aa0 | 1719 | break; |
3f192f23 | 1720 | } |
27527aa0 BP |
1721 | |
1722 | default: | |
2e4f5fcf BP |
1723 | NOT_REACHED(); |
1724 | } | |
1725 | ||
982697a4 | 1726 | ofpmsg_update_length(msg); |
2e4f5fcf BP |
1727 | return msg; |
1728 | } | |
1729 | ||
27527aa0 BP |
1730 | /* Returns a bitmask with a 1-bit for each protocol that could be used to |
1731 | * send all of the 'n_fm's flow table modification requests in 'fms', and a | |
1732 | * 0-bit for each protocol that is inadequate. | |
1733 | * | |
1734 | * (The return value will have at least one 1-bit.) */ | |
1735 | enum ofputil_protocol | |
1736 | ofputil_flow_mod_usable_protocols(const struct ofputil_flow_mod *fms, | |
1737 | size_t n_fms) | |
1738 | { | |
1739 | enum ofputil_protocol usable_protocols; | |
1740 | size_t i; | |
1741 | ||
1742 | usable_protocols = OFPUTIL_P_ANY; | |
1743 | for (i = 0; i < n_fms; i++) { | |
1744 | const struct ofputil_flow_mod *fm = &fms[i]; | |
1745 | ||
81a76618 | 1746 | usable_protocols &= ofputil_usable_protocols(&fm->match); |
27527aa0 BP |
1747 | if (fm->table_id != 0xff) { |
1748 | usable_protocols &= OFPUTIL_P_TID; | |
1749 | } | |
623e1caf | 1750 | |
7cd90356 | 1751 | /* Matching of the cookie is only supported through NXM or OF1.1+. */ |
623e1caf | 1752 | if (fm->cookie_mask != htonll(0)) { |
2e1ae200 JR |
1753 | usable_protocols &= OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1754 | | OFPUTIL_P_OF13_OXM; | |
27527aa0 BP |
1755 | } |
1756 | } | |
27527aa0 BP |
1757 | |
1758 | return usable_protocols; | |
1759 | } | |
1760 | ||
90bf1e07 | 1761 | static enum ofperr |
0157ad3a SH |
1762 | ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr, |
1763 | const struct ofp10_flow_stats_request *ofsr, | |
1764 | bool aggregate) | |
2e4f5fcf | 1765 | { |
2e4f5fcf | 1766 | fsr->aggregate = aggregate; |
81a76618 | 1767 | ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match); |
2e4f5fcf BP |
1768 | fsr->out_port = ntohs(ofsr->out_port); |
1769 | fsr->table_id = ofsr->table_id; | |
e729e793 | 1770 | fsr->cookie = fsr->cookie_mask = htonll(0); |
2e4f5fcf BP |
1771 | |
1772 | return 0; | |
1773 | } | |
1774 | ||
0157ad3a SH |
1775 | static enum ofperr |
1776 | ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr, | |
1777 | struct ofpbuf *b, bool aggregate) | |
1778 | { | |
1779 | const struct ofp11_flow_stats_request *ofsr; | |
1780 | enum ofperr error; | |
1781 | ||
1782 | ofsr = ofpbuf_pull(b, sizeof *ofsr); | |
1783 | fsr->aggregate = aggregate; | |
1784 | fsr->table_id = ofsr->table_id; | |
1785 | error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port); | |
1786 | if (error) { | |
1787 | return error; | |
1788 | } | |
1789 | if (ofsr->out_group != htonl(OFPG11_ANY)) { | |
fb9515e1 | 1790 | return OFPERR_OFPFMFC_UNKNOWN; |
0157ad3a SH |
1791 | } |
1792 | fsr->cookie = ofsr->cookie; | |
1793 | fsr->cookie_mask = ofsr->cookie_mask; | |
81a76618 | 1794 | error = ofputil_pull_ofp11_match(b, &fsr->match, NULL); |
0157ad3a SH |
1795 | if (error) { |
1796 | return error; | |
1797 | } | |
1798 | ||
1799 | return 0; | |
1800 | } | |
1801 | ||
90bf1e07 | 1802 | static enum ofperr |
81d1ea94 | 1803 | ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr, |
982697a4 | 1804 | struct ofpbuf *b, bool aggregate) |
2e4f5fcf BP |
1805 | { |
1806 | const struct nx_flow_stats_request *nfsr; | |
90bf1e07 | 1807 | enum ofperr error; |
2e4f5fcf | 1808 | |
982697a4 | 1809 | nfsr = ofpbuf_pull(b, sizeof *nfsr); |
81a76618 | 1810 | error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match, |
e729e793 | 1811 | &fsr->cookie, &fsr->cookie_mask); |
2e4f5fcf BP |
1812 | if (error) { |
1813 | return error; | |
1814 | } | |
982697a4 | 1815 | if (b->size) { |
90bf1e07 | 1816 | return OFPERR_OFPBRC_BAD_LEN; |
2e4f5fcf BP |
1817 | } |
1818 | ||
1819 | fsr->aggregate = aggregate; | |
1820 | fsr->out_port = ntohs(nfsr->out_port); | |
1821 | fsr->table_id = nfsr->table_id; | |
1822 | ||
1823 | return 0; | |
1824 | } | |
1825 | ||
1826 | /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE | |
b78f6b77 BP |
1827 | * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if |
1828 | * successful, otherwise an OpenFlow error code. */ | |
90bf1e07 | 1829 | enum ofperr |
81d1ea94 | 1830 | ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr, |
b78f6b77 | 1831 | const struct ofp_header *oh) |
2e4f5fcf | 1832 | { |
982697a4 | 1833 | enum ofpraw raw; |
2e4f5fcf | 1834 | struct ofpbuf b; |
2e4f5fcf | 1835 | |
2013493b | 1836 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
982697a4 BP |
1837 | raw = ofpraw_pull_assert(&b); |
1838 | switch ((int) raw) { | |
cfc23141 | 1839 | case OFPRAW_OFPST10_FLOW_REQUEST: |
0157ad3a | 1840 | return ofputil_decode_ofpst10_flow_request(fsr, b.data, false); |
2e4f5fcf | 1841 | |
617da9cd | 1842 | case OFPRAW_OFPST10_AGGREGATE_REQUEST: |
0157ad3a SH |
1843 | return ofputil_decode_ofpst10_flow_request(fsr, b.data, true); |
1844 | ||
1845 | case OFPRAW_OFPST11_FLOW_REQUEST: | |
1846 | return ofputil_decode_ofpst11_flow_request(fsr, &b, false); | |
2e4f5fcf | 1847 | |
617da9cd SH |
1848 | case OFPRAW_OFPST11_AGGREGATE_REQUEST: |
1849 | return ofputil_decode_ofpst11_flow_request(fsr, &b, true); | |
1850 | ||
982697a4 BP |
1851 | case OFPRAW_NXST_FLOW_REQUEST: |
1852 | return ofputil_decode_nxst_flow_request(fsr, &b, false); | |
2e4f5fcf | 1853 | |
982697a4 BP |
1854 | case OFPRAW_NXST_AGGREGATE_REQUEST: |
1855 | return ofputil_decode_nxst_flow_request(fsr, &b, true); | |
2e4f5fcf BP |
1856 | |
1857 | default: | |
1858 | /* Hey, the caller lied. */ | |
1859 | NOT_REACHED(); | |
1860 | } | |
1861 | } | |
1862 | ||
1863 | /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW, | |
4ffd1b43 | 1864 | * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to |
27527aa0 | 1865 | * 'protocol', and returns the message. */ |
2e4f5fcf | 1866 | struct ofpbuf * |
81d1ea94 | 1867 | ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr, |
27527aa0 | 1868 | enum ofputil_protocol protocol) |
2e4f5fcf BP |
1869 | { |
1870 | struct ofpbuf *msg; | |
982697a4 | 1871 | enum ofpraw raw; |
2e4f5fcf | 1872 | |
27527aa0 | 1873 | switch (protocol) { |
2e1ae200 JR |
1874 | case OFPUTIL_P_OF12_OXM: |
1875 | case OFPUTIL_P_OF13_OXM: { | |
06516c65 SH |
1876 | struct ofp11_flow_stats_request *ofsr; |
1877 | ||
1878 | raw = (fsr->aggregate | |
617da9cd | 1879 | ? OFPRAW_OFPST11_AGGREGATE_REQUEST |
cfc23141 | 1880 | : OFPRAW_OFPST11_FLOW_REQUEST); |
2e1ae200 JR |
1881 | msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol), |
1882 | NXM_TYPICAL_LEN); | |
06516c65 SH |
1883 | ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr); |
1884 | ofsr->table_id = fsr->table_id; | |
1885 | ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port); | |
1886 | ofsr->out_group = htonl(OFPG11_ANY); | |
1887 | ofsr->cookie = fsr->cookie; | |
1888 | ofsr->cookie_mask = fsr->cookie_mask; | |
1889 | oxm_put_match(msg, &fsr->match); | |
1890 | break; | |
1891 | } | |
1892 | ||
85813857 BP |
1893 | case OFPUTIL_P_OF10_STD: |
1894 | case OFPUTIL_P_OF10_STD_TID: { | |
e2b9ac44 | 1895 | struct ofp10_flow_stats_request *ofsr; |
2e4f5fcf | 1896 | |
982697a4 | 1897 | raw = (fsr->aggregate |
617da9cd | 1898 | ? OFPRAW_OFPST10_AGGREGATE_REQUEST |
cfc23141 | 1899 | : OFPRAW_OFPST10_FLOW_REQUEST); |
982697a4 BP |
1900 | msg = ofpraw_alloc(raw, OFP10_VERSION, 0); |
1901 | ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr); | |
81a76618 | 1902 | ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match); |
2e4f5fcf BP |
1903 | ofsr->table_id = fsr->table_id; |
1904 | ofsr->out_port = htons(fsr->out_port); | |
27527aa0 BP |
1905 | break; |
1906 | } | |
1907 | ||
85813857 BP |
1908 | case OFPUTIL_P_OF10_NXM: |
1909 | case OFPUTIL_P_OF10_NXM_TID: { | |
2e4f5fcf BP |
1910 | struct nx_flow_stats_request *nfsr; |
1911 | int match_len; | |
1912 | ||
982697a4 BP |
1913 | raw = (fsr->aggregate |
1914 | ? OFPRAW_NXST_AGGREGATE_REQUEST | |
1915 | : OFPRAW_NXST_FLOW_REQUEST); | |
06516c65 | 1916 | msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN); |
982697a4 | 1917 | ofpbuf_put_zeros(msg, sizeof *nfsr); |
7623f4dd | 1918 | match_len = nx_put_match(msg, &fsr->match, |
e729e793 | 1919 | fsr->cookie, fsr->cookie_mask); |
2e4f5fcf | 1920 | |
982697a4 | 1921 | nfsr = msg->l3; |
2e4f5fcf BP |
1922 | nfsr->out_port = htons(fsr->out_port); |
1923 | nfsr->match_len = htons(match_len); | |
1924 | nfsr->table_id = fsr->table_id; | |
27527aa0 BP |
1925 | break; |
1926 | } | |
1927 | ||
1928 | default: | |
2e4f5fcf BP |
1929 | NOT_REACHED(); |
1930 | } | |
1931 | ||
1932 | return msg; | |
1933 | } | |
d1e2cf21 | 1934 | |
27527aa0 BP |
1935 | /* Returns a bitmask with a 1-bit for each protocol that could be used to |
1936 | * accurately encode 'fsr', and a 0-bit for each protocol that is inadequate. | |
1937 | * | |
1938 | * (The return value will have at least one 1-bit.) */ | |
1939 | enum ofputil_protocol | |
1940 | ofputil_flow_stats_request_usable_protocols( | |
1941 | const struct ofputil_flow_stats_request *fsr) | |
1942 | { | |
1943 | enum ofputil_protocol usable_protocols; | |
1944 | ||
1945 | usable_protocols = ofputil_usable_protocols(&fsr->match); | |
1946 | if (fsr->cookie_mask != htonll(0)) { | |
2e1ae200 JR |
1947 | usable_protocols &= OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1948 | | OFPUTIL_P_OF13_OXM; | |
27527aa0 BP |
1949 | } |
1950 | return usable_protocols; | |
1951 | } | |
1952 | ||
4ffd1b43 | 1953 | /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract |
b78f6b77 | 1954 | * ofputil_flow_stats in 'fs'. |
4ffd1b43 BP |
1955 | * |
1956 | * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single | |
1957 | * OpenFlow message. Calling this function multiple times for a single 'msg' | |
1958 | * iterates through the replies. The caller must initially leave 'msg''s layer | |
1959 | * pointers null and not modify them between calls. | |
1960 | * | |
f27f2134 BP |
1961 | * Most switches don't send the values needed to populate fs->idle_age and |
1962 | * fs->hard_age, so those members will usually be set to 0. If the switch from | |
1963 | * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass | |
1964 | * 'flow_age_extension' as true so that the contents of 'msg' determine the | |
1965 | * 'idle_age' and 'hard_age' members in 'fs'. | |
1966 | * | |
f25d0cf3 BP |
1967 | * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats |
1968 | * reply's actions. The caller must initialize 'ofpacts' and retains ownership | |
1969 | * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer. | |
1970 | * | |
4ffd1b43 BP |
1971 | * Returns 0 if successful, EOF if no replies were left in this 'msg', |
1972 | * otherwise a positive errno value. */ | |
1973 | int | |
1974 | ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs, | |
f27f2134 | 1975 | struct ofpbuf *msg, |
f25d0cf3 BP |
1976 | bool flow_age_extension, |
1977 | struct ofpbuf *ofpacts) | |
4ffd1b43 | 1978 | { |
982697a4 BP |
1979 | enum ofperr error; |
1980 | enum ofpraw raw; | |
4ffd1b43 | 1981 | |
982697a4 BP |
1982 | error = (msg->l2 |
1983 | ? ofpraw_decode(&raw, msg->l2) | |
1984 | : ofpraw_pull(&raw, msg)); | |
1985 | if (error) { | |
1986 | return error; | |
4ffd1b43 BP |
1987 | } |
1988 | ||
1989 | if (!msg->size) { | |
1990 | return EOF; | |
2e1ae200 JR |
1991 | } else if (raw == OFPRAW_OFPST11_FLOW_REPLY |
1992 | || raw == OFPRAW_OFPST13_FLOW_REPLY) { | |
6ec5f0c5 SH |
1993 | const struct ofp11_flow_stats *ofs; |
1994 | size_t length; | |
1995 | uint16_t padded_match_len; | |
1996 | ||
1997 | ofs = ofpbuf_try_pull(msg, sizeof *ofs); | |
1998 | if (!ofs) { | |
1999 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %zu leftover " | |
2000 | "bytes at end", msg->size); | |
2001 | return EINVAL; | |
2002 | } | |
2003 | ||
2004 | length = ntohs(ofs->length); | |
2005 | if (length < sizeof *ofs) { | |
2006 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid " | |
2007 | "length %zu", length); | |
2008 | return EINVAL; | |
2009 | } | |
2010 | ||
81a76618 | 2011 | if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) { |
6ec5f0c5 SH |
2012 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match"); |
2013 | return EINVAL; | |
2014 | } | |
2015 | ||
2016 | if (ofpacts_pull_openflow11_instructions(msg, length - sizeof *ofs - | |
2017 | padded_match_len, ofpacts)) { | |
2018 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions"); | |
2019 | return EINVAL; | |
2020 | } | |
2021 | ||
81a76618 | 2022 | fs->priority = ntohs(ofs->priority); |
6ec5f0c5 SH |
2023 | fs->table_id = ofs->table_id; |
2024 | fs->duration_sec = ntohl(ofs->duration_sec); | |
2025 | fs->duration_nsec = ntohl(ofs->duration_nsec); | |
2026 | fs->idle_timeout = ntohs(ofs->idle_timeout); | |
2027 | fs->hard_timeout = ntohs(ofs->hard_timeout); | |
2e1ae200 | 2028 | fs->flags = (raw == OFPRAW_OFPST13_FLOW_REPLY) ? ntohs(ofs->flags) : 0; |
6ec5f0c5 SH |
2029 | fs->idle_age = -1; |
2030 | fs->hard_age = -1; | |
2031 | fs->cookie = ofs->cookie; | |
2032 | fs->packet_count = ntohll(ofs->packet_count); | |
2033 | fs->byte_count = ntohll(ofs->byte_count); | |
cfc23141 | 2034 | } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) { |
e2b9ac44 | 2035 | const struct ofp10_flow_stats *ofs; |
4ffd1b43 BP |
2036 | size_t length; |
2037 | ||
2038 | ofs = ofpbuf_try_pull(msg, sizeof *ofs); | |
2039 | if (!ofs) { | |
2040 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %zu leftover " | |
2041 | "bytes at end", msg->size); | |
2042 | return EINVAL; | |
2043 | } | |
2044 | ||
2045 | length = ntohs(ofs->length); | |
2046 | if (length < sizeof *ofs) { | |
2047 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid " | |
2048 | "length %zu", length); | |
2049 | return EINVAL; | |
2050 | } | |
2051 | ||
d01c980f | 2052 | if (ofpacts_pull_openflow10(msg, length - sizeof *ofs, ofpacts)) { |
4ffd1b43 BP |
2053 | return EINVAL; |
2054 | } | |
2055 | ||
2056 | fs->cookie = get_32aligned_be64(&ofs->cookie); | |
81a76618 BP |
2057 | ofputil_match_from_ofp10_match(&ofs->match, &fs->match); |
2058 | fs->priority = ntohs(ofs->priority); | |
4ffd1b43 BP |
2059 | fs->table_id = ofs->table_id; |
2060 | fs->duration_sec = ntohl(ofs->duration_sec); | |
2061 | fs->duration_nsec = ntohl(ofs->duration_nsec); | |
2062 | fs->idle_timeout = ntohs(ofs->idle_timeout); | |
2063 | fs->hard_timeout = ntohs(ofs->hard_timeout); | |
f27f2134 BP |
2064 | fs->idle_age = -1; |
2065 | fs->hard_age = -1; | |
4ffd1b43 BP |
2066 | fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count)); |
2067 | fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count)); | |
2e1ae200 | 2068 | fs->flags = 0; |
982697a4 | 2069 | } else if (raw == OFPRAW_NXST_FLOW_REPLY) { |
4ffd1b43 | 2070 | const struct nx_flow_stats *nfs; |
f25d0cf3 | 2071 | size_t match_len, actions_len, length; |
4ffd1b43 BP |
2072 | |
2073 | nfs = ofpbuf_try_pull(msg, sizeof *nfs); | |
2074 | if (!nfs) { | |
2075 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %zu leftover " | |
2076 | "bytes at end", msg->size); | |
2077 | return EINVAL; | |
2078 | } | |
2079 | ||
2080 | length = ntohs(nfs->length); | |
2081 | match_len = ntohs(nfs->match_len); | |
2082 | if (length < sizeof *nfs + ROUND_UP(match_len, 8)) { | |
2083 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%zu " | |
2084 | "claims invalid length %zu", match_len, length); | |
2085 | return EINVAL; | |
2086 | } | |
81a76618 | 2087 | if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) { |
4ffd1b43 BP |
2088 | return EINVAL; |
2089 | } | |
2090 | ||
f25d0cf3 | 2091 | actions_len = length - sizeof *nfs - ROUND_UP(match_len, 8); |
d01c980f | 2092 | if (ofpacts_pull_openflow10(msg, actions_len, ofpacts)) { |
4ffd1b43 BP |
2093 | return EINVAL; |
2094 | } | |
2095 | ||
2096 | fs->cookie = nfs->cookie; | |
2097 | fs->table_id = nfs->table_id; | |
2098 | fs->duration_sec = ntohl(nfs->duration_sec); | |
2099 | fs->duration_nsec = ntohl(nfs->duration_nsec); | |
81a76618 | 2100 | fs->priority = ntohs(nfs->priority); |
4ffd1b43 BP |
2101 | fs->idle_timeout = ntohs(nfs->idle_timeout); |
2102 | fs->hard_timeout = ntohs(nfs->hard_timeout); | |
f27f2134 BP |
2103 | fs->idle_age = -1; |
2104 | fs->hard_age = -1; | |
2105 | if (flow_age_extension) { | |
2106 | if (nfs->idle_age) { | |
2107 | fs->idle_age = ntohs(nfs->idle_age) - 1; | |
2108 | } | |
2109 | if (nfs->hard_age) { | |
2110 | fs->hard_age = ntohs(nfs->hard_age) - 1; | |
2111 | } | |
2112 | } | |
4ffd1b43 BP |
2113 | fs->packet_count = ntohll(nfs->packet_count); |
2114 | fs->byte_count = ntohll(nfs->byte_count); | |
2e1ae200 | 2115 | fs->flags = 0; |
4ffd1b43 BP |
2116 | } else { |
2117 | NOT_REACHED(); | |
2118 | } | |
2119 | ||
f25d0cf3 BP |
2120 | fs->ofpacts = ofpacts->data; |
2121 | fs->ofpacts_len = ofpacts->size; | |
2122 | ||
4ffd1b43 BP |
2123 | return 0; |
2124 | } | |
2125 | ||
5e9d0469 BP |
2126 | /* Returns 'count' unchanged except that UINT64_MAX becomes 0. |
2127 | * | |
2128 | * We use this in situations where OVS internally uses UINT64_MAX to mean | |
2129 | * "value unknown" but OpenFlow 1.0 does not define any unknown value. */ | |
2130 | static uint64_t | |
2131 | unknown_to_zero(uint64_t count) | |
2132 | { | |
2133 | return count != UINT64_MAX ? count : 0; | |
2134 | } | |
2135 | ||
349adfb2 BP |
2136 | /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to |
2137 | * those already present in the list of ofpbufs in 'replies'. 'replies' should | |
2138 | * have been initialized with ofputil_start_stats_reply(). */ | |
2139 | void | |
2140 | ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs, | |
2141 | struct list *replies) | |
2142 | { | |
f25d0cf3 | 2143 | struct ofpbuf *reply = ofpbuf_from_list(list_back(replies)); |
f25d0cf3 | 2144 | size_t start_ofs = reply->size; |
982697a4 | 2145 | enum ofpraw raw; |
349adfb2 | 2146 | |
982697a4 | 2147 | ofpraw_decode_partial(&raw, reply->data, reply->size); |
2e1ae200 | 2148 | if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) { |
22a86f18 SH |
2149 | struct ofp11_flow_stats *ofs; |
2150 | ||
2151 | ofpbuf_put_uninit(reply, sizeof *ofs); | |
81a76618 | 2152 | oxm_put_match(reply, &fs->match); |
22a86f18 SH |
2153 | ofpacts_put_openflow11_instructions(fs->ofpacts, fs->ofpacts_len, |
2154 | reply); | |
2155 | ||
2156 | ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs); | |
2157 | ofs->length = htons(reply->size - start_ofs); | |
2158 | ofs->table_id = fs->table_id; | |
2159 | ofs->pad = 0; | |
2160 | ofs->duration_sec = htonl(fs->duration_sec); | |
2161 | ofs->duration_nsec = htonl(fs->duration_nsec); | |
81a76618 | 2162 | ofs->priority = htons(fs->priority); |
22a86f18 SH |
2163 | ofs->idle_timeout = htons(fs->idle_timeout); |
2164 | ofs->hard_timeout = htons(fs->hard_timeout); | |
2e1ae200 | 2165 | ofs->flags = (raw == OFPRAW_OFPST13_FLOW_REPLY) ? htons(fs->flags) : 0; |
22a86f18 SH |
2166 | memset(ofs->pad2, 0, sizeof ofs->pad2); |
2167 | ofs->cookie = fs->cookie; | |
2168 | ofs->packet_count = htonll(unknown_to_zero(fs->packet_count)); | |
2169 | ofs->byte_count = htonll(unknown_to_zero(fs->byte_count)); | |
2170 | } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) { | |
e2b9ac44 | 2171 | struct ofp10_flow_stats *ofs; |
349adfb2 | 2172 | |
1a59dc2c BP |
2173 | ofpbuf_put_uninit(reply, sizeof *ofs); |
2174 | ofpacts_put_openflow10(fs->ofpacts, fs->ofpacts_len, reply); | |
2175 | ||
2176 | ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs); | |
2177 | ofs->length = htons(reply->size - start_ofs); | |
349adfb2 BP |
2178 | ofs->table_id = fs->table_id; |
2179 | ofs->pad = 0; | |
81a76618 | 2180 | ofputil_match_to_ofp10_match(&fs->match, &ofs->match); |
349adfb2 BP |
2181 | ofs->duration_sec = htonl(fs->duration_sec); |
2182 | ofs->duration_nsec = htonl(fs->duration_nsec); | |
81a76618 | 2183 | ofs->priority = htons(fs->priority); |
349adfb2 BP |
2184 | ofs->idle_timeout = htons(fs->idle_timeout); |
2185 | ofs->hard_timeout = htons(fs->hard_timeout); | |
2186 | memset(ofs->pad2, 0, sizeof ofs->pad2); | |
2187 | put_32aligned_be64(&ofs->cookie, fs->cookie); | |
5e9d0469 BP |
2188 | put_32aligned_be64(&ofs->packet_count, |
2189 | htonll(unknown_to_zero(fs->packet_count))); | |
2190 | put_32aligned_be64(&ofs->byte_count, | |
2191 | htonll(unknown_to_zero(fs->byte_count))); | |
982697a4 | 2192 | } else if (raw == OFPRAW_NXST_FLOW_REPLY) { |
349adfb2 | 2193 | struct nx_flow_stats *nfs; |
1a59dc2c | 2194 | int match_len; |
349adfb2 | 2195 | |
1a59dc2c | 2196 | ofpbuf_put_uninit(reply, sizeof *nfs); |
81a76618 | 2197 | match_len = nx_put_match(reply, &fs->match, 0, 0); |
1a59dc2c BP |
2198 | ofpacts_put_openflow10(fs->ofpacts, fs->ofpacts_len, reply); |
2199 | ||
2200 | nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs); | |
2201 | nfs->length = htons(reply->size - start_ofs); | |
349adfb2 BP |
2202 | nfs->table_id = fs->table_id; |
2203 | nfs->pad = 0; | |
2204 | nfs->duration_sec = htonl(fs->duration_sec); | |
2205 | nfs->duration_nsec = htonl(fs->duration_nsec); | |
81a76618 | 2206 | nfs->priority = htons(fs->priority); |
349adfb2 BP |
2207 | nfs->idle_timeout = htons(fs->idle_timeout); |
2208 | nfs->hard_timeout = htons(fs->hard_timeout); | |
f27f2134 BP |
2209 | nfs->idle_age = htons(fs->idle_age < 0 ? 0 |
2210 | : fs->idle_age < UINT16_MAX ? fs->idle_age + 1 | |
2211 | : UINT16_MAX); | |
2212 | nfs->hard_age = htons(fs->hard_age < 0 ? 0 | |
2213 | : fs->hard_age < UINT16_MAX ? fs->hard_age + 1 | |
2214 | : UINT16_MAX); | |
1a59dc2c | 2215 | nfs->match_len = htons(match_len); |
349adfb2 BP |
2216 | nfs->cookie = fs->cookie; |
2217 | nfs->packet_count = htonll(fs->packet_count); | |
2218 | nfs->byte_count = htonll(fs->byte_count); | |
349adfb2 BP |
2219 | } else { |
2220 | NOT_REACHED(); | |
2221 | } | |
f25d0cf3 | 2222 | |
982697a4 | 2223 | ofpmp_postappend(replies, start_ofs); |
349adfb2 BP |
2224 | } |
2225 | ||
76c93b22 | 2226 | /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or |
a814ba0f | 2227 | * NXST_AGGREGATE reply matching 'request', and returns the message. */ |
76c93b22 BP |
2228 | struct ofpbuf * |
2229 | ofputil_encode_aggregate_stats_reply( | |
2230 | const struct ofputil_aggregate_stats *stats, | |
982697a4 | 2231 | const struct ofp_header *request) |
76c93b22 | 2232 | { |
a814ba0f BP |
2233 | struct ofp_aggregate_stats_reply *asr; |
2234 | uint64_t packet_count; | |
2235 | uint64_t byte_count; | |
76c93b22 | 2236 | struct ofpbuf *msg; |
982697a4 | 2237 | enum ofpraw raw; |
76c93b22 | 2238 | |
982697a4 | 2239 | ofpraw_decode(&raw, request); |
617da9cd | 2240 | if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) { |
a814ba0f BP |
2241 | packet_count = unknown_to_zero(stats->packet_count); |
2242 | byte_count = unknown_to_zero(stats->byte_count); | |
76c93b22 | 2243 | } else { |
a814ba0f BP |
2244 | packet_count = stats->packet_count; |
2245 | byte_count = stats->byte_count; | |
76c93b22 BP |
2246 | } |
2247 | ||
a814ba0f BP |
2248 | msg = ofpraw_alloc_stats_reply(request, 0); |
2249 | asr = ofpbuf_put_zeros(msg, sizeof *asr); | |
2250 | put_32aligned_be64(&asr->packet_count, htonll(packet_count)); | |
2251 | put_32aligned_be64(&asr->byte_count, htonll(byte_count)); | |
2252 | asr->flow_count = htonl(stats->flow_count); | |
2253 | ||
76c93b22 BP |
2254 | return msg; |
2255 | } | |
2256 | ||
982697a4 BP |
2257 | enum ofperr |
2258 | ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats, | |
2259 | const struct ofp_header *reply) | |
2260 | { | |
a814ba0f | 2261 | struct ofp_aggregate_stats_reply *asr; |
982697a4 | 2262 | struct ofpbuf msg; |
982697a4 BP |
2263 | |
2264 | ofpbuf_use_const(&msg, reply, ntohs(reply->length)); | |
a814ba0f BP |
2265 | ofpraw_pull_assert(&msg); |
2266 | ||
2267 | asr = msg.l3; | |
2268 | stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count)); | |
2269 | stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count)); | |
2270 | stats->flow_count = ntohl(asr->flow_count); | |
982697a4 BP |
2271 | |
2272 | return 0; | |
2273 | } | |
2274 | ||
b78f6b77 BP |
2275 | /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an |
2276 | * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise | |
2277 | * an OpenFlow error code. */ | |
90bf1e07 | 2278 | enum ofperr |
9b045a0c | 2279 | ofputil_decode_flow_removed(struct ofputil_flow_removed *fr, |
b78f6b77 | 2280 | const struct ofp_header *oh) |
9b045a0c | 2281 | { |
982697a4 BP |
2282 | enum ofpraw raw; |
2283 | struct ofpbuf b; | |
9b045a0c | 2284 | |
982697a4 BP |
2285 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2286 | raw = ofpraw_pull_assert(&b); | |
eefbf181 SH |
2287 | if (raw == OFPRAW_OFPT11_FLOW_REMOVED) { |
2288 | const struct ofp12_flow_removed *ofr; | |
2289 | enum ofperr error; | |
2290 | ||
2291 | ofr = ofpbuf_pull(&b, sizeof *ofr); | |
2292 | ||
81a76618 | 2293 | error = ofputil_pull_ofp11_match(&b, &fr->match, NULL); |
eefbf181 SH |
2294 | if (error) { |
2295 | return error; | |
2296 | } | |
2297 | ||
81a76618 | 2298 | fr->priority = ntohs(ofr->priority); |
eefbf181 SH |
2299 | fr->cookie = ofr->cookie; |
2300 | fr->reason = ofr->reason; | |
95216219 | 2301 | fr->table_id = ofr->table_id; |
eefbf181 SH |
2302 | fr->duration_sec = ntohl(ofr->duration_sec); |
2303 | fr->duration_nsec = ntohl(ofr->duration_nsec); | |
2304 | fr->idle_timeout = ntohs(ofr->idle_timeout); | |
2305 | fr->hard_timeout = ntohs(ofr->hard_timeout); | |
2306 | fr->packet_count = ntohll(ofr->packet_count); | |
2307 | fr->byte_count = ntohll(ofr->byte_count); | |
2308 | } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) { | |
31a9e63f | 2309 | const struct ofp10_flow_removed *ofr; |
9b045a0c | 2310 | |
982697a4 BP |
2311 | ofr = ofpbuf_pull(&b, sizeof *ofr); |
2312 | ||
81a76618 BP |
2313 | ofputil_match_from_ofp10_match(&ofr->match, &fr->match); |
2314 | fr->priority = ntohs(ofr->priority); | |
9b045a0c BP |
2315 | fr->cookie = ofr->cookie; |
2316 | fr->reason = ofr->reason; | |
95216219 | 2317 | fr->table_id = 255; |
9b045a0c BP |
2318 | fr->duration_sec = ntohl(ofr->duration_sec); |
2319 | fr->duration_nsec = ntohl(ofr->duration_nsec); | |
2320 | fr->idle_timeout = ntohs(ofr->idle_timeout); | |
fa2bad0f | 2321 | fr->hard_timeout = 0; |
9b045a0c BP |
2322 | fr->packet_count = ntohll(ofr->packet_count); |
2323 | fr->byte_count = ntohll(ofr->byte_count); | |
982697a4 | 2324 | } else if (raw == OFPRAW_NXT_FLOW_REMOVED) { |
9b045a0c | 2325 | struct nx_flow_removed *nfr; |
c2725b60 | 2326 | enum ofperr error; |
9b045a0c | 2327 | |
9b045a0c | 2328 | nfr = ofpbuf_pull(&b, sizeof *nfr); |
81a76618 BP |
2329 | error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match, |
2330 | NULL, NULL); | |
9b045a0c BP |
2331 | if (error) { |
2332 | return error; | |
2333 | } | |
2334 | if (b.size) { | |
90bf1e07 | 2335 | return OFPERR_OFPBRC_BAD_LEN; |
9b045a0c BP |
2336 | } |
2337 | ||
81a76618 | 2338 | fr->priority = ntohs(nfr->priority); |
9b045a0c BP |
2339 | fr->cookie = nfr->cookie; |
2340 | fr->reason = nfr->reason; | |
745bfd5e | 2341 | fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255; |
9b045a0c BP |
2342 | fr->duration_sec = ntohl(nfr->duration_sec); |
2343 | fr->duration_nsec = ntohl(nfr->duration_nsec); | |
2344 | fr->idle_timeout = ntohs(nfr->idle_timeout); | |
fa2bad0f | 2345 | fr->hard_timeout = 0; |
9b045a0c BP |
2346 | fr->packet_count = ntohll(nfr->packet_count); |
2347 | fr->byte_count = ntohll(nfr->byte_count); | |
2348 | } else { | |
2349 | NOT_REACHED(); | |
2350 | } | |
2351 | ||
2352 | return 0; | |
2353 | } | |
2354 | ||
588cd7b5 | 2355 | /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or |
27527aa0 | 2356 | * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the |
588cd7b5 BP |
2357 | * message. */ |
2358 | struct ofpbuf * | |
2359 | ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr, | |
27527aa0 | 2360 | enum ofputil_protocol protocol) |
588cd7b5 BP |
2361 | { |
2362 | struct ofpbuf *msg; | |
2363 | ||
27527aa0 | 2364 | switch (protocol) { |
2e1ae200 JR |
2365 | case OFPUTIL_P_OF12_OXM: |
2366 | case OFPUTIL_P_OF13_OXM: { | |
83974732 SH |
2367 | struct ofp12_flow_removed *ofr; |
2368 | ||
2369 | msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED, | |
2370 | ofputil_protocol_to_ofp_version(protocol), | |
2371 | htonl(0), NXM_TYPICAL_LEN); | |
2372 | ofr = ofpbuf_put_zeros(msg, sizeof *ofr); | |
2373 | ofr->cookie = fr->cookie; | |
81a76618 | 2374 | ofr->priority = htons(fr->priority); |
83974732 | 2375 | ofr->reason = fr->reason; |
95216219 | 2376 | ofr->table_id = fr->table_id; |
83974732 SH |
2377 | ofr->duration_sec = htonl(fr->duration_sec); |
2378 | ofr->duration_nsec = htonl(fr->duration_nsec); | |
2379 | ofr->idle_timeout = htons(fr->idle_timeout); | |
fa2bad0f | 2380 | ofr->hard_timeout = htons(fr->hard_timeout); |
83974732 SH |
2381 | ofr->packet_count = htonll(fr->packet_count); |
2382 | ofr->byte_count = htonll(fr->byte_count); | |
81a76618 | 2383 | oxm_put_match(msg, &fr->match); |
83974732 SH |
2384 | break; |
2385 | } | |
2386 | ||
85813857 BP |
2387 | case OFPUTIL_P_OF10_STD: |
2388 | case OFPUTIL_P_OF10_STD_TID: { | |
31a9e63f | 2389 | struct ofp10_flow_removed *ofr; |
588cd7b5 | 2390 | |
982697a4 BP |
2391 | msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION, |
2392 | htonl(0), 0); | |
2393 | ofr = ofpbuf_put_zeros(msg, sizeof *ofr); | |
81a76618 | 2394 | ofputil_match_to_ofp10_match(&fr->match, &ofr->match); |
7fb563b9 | 2395 | ofr->cookie = fr->cookie; |
81a76618 | 2396 | ofr->priority = htons(fr->priority); |
588cd7b5 BP |
2397 | ofr->reason = fr->reason; |
2398 | ofr->duration_sec = htonl(fr->duration_sec); | |
2399 | ofr->duration_nsec = htonl(fr->duration_nsec); | |
2400 | ofr->idle_timeout = htons(fr->idle_timeout); | |
5e9d0469 BP |
2401 | ofr->packet_count = htonll(unknown_to_zero(fr->packet_count)); |
2402 | ofr->byte_count = htonll(unknown_to_zero(fr->byte_count)); | |
27527aa0 BP |
2403 | break; |
2404 | } | |
2405 | ||
85813857 BP |
2406 | case OFPUTIL_P_OF10_NXM: |
2407 | case OFPUTIL_P_OF10_NXM_TID: { | |
588cd7b5 BP |
2408 | struct nx_flow_removed *nfr; |
2409 | int match_len; | |
2410 | ||
982697a4 BP |
2411 | msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION, |
2412 | htonl(0), NXM_TYPICAL_LEN); | |
2413 | nfr = ofpbuf_put_zeros(msg, sizeof *nfr); | |
81a76618 | 2414 | match_len = nx_put_match(msg, &fr->match, 0, 0); |
588cd7b5 | 2415 | |
982697a4 | 2416 | nfr = msg->l3; |
588cd7b5 | 2417 | nfr->cookie = fr->cookie; |
81a76618 | 2418 | nfr->priority = htons(fr->priority); |
588cd7b5 | 2419 | nfr->reason = fr->reason; |
745bfd5e | 2420 | nfr->table_id = fr->table_id + 1; |
588cd7b5 BP |
2421 | nfr->duration_sec = htonl(fr->duration_sec); |
2422 | nfr->duration_nsec = htonl(fr->duration_nsec); | |
2423 | nfr->idle_timeout = htons(fr->idle_timeout); | |
2424 | nfr->match_len = htons(match_len); | |
2425 | nfr->packet_count = htonll(fr->packet_count); | |
2426 | nfr->byte_count = htonll(fr->byte_count); | |
27527aa0 BP |
2427 | break; |
2428 | } | |
2429 | ||
2430 | default: | |
588cd7b5 BP |
2431 | NOT_REACHED(); |
2432 | } | |
2433 | ||
2434 | return msg; | |
2435 | } | |
2436 | ||
7cfb9651 SH |
2437 | static void |
2438 | ofputil_decode_packet_in_finish(struct ofputil_packet_in *pin, | |
81a76618 | 2439 | struct match *match, struct ofpbuf *b) |
7cfb9651 SH |
2440 | { |
2441 | pin->packet = b->data; | |
2442 | pin->packet_len = b->size; | |
2443 | ||
81a76618 | 2444 | pin->fmd.in_port = match->flow.in_port; |
296e07ac | 2445 | pin->fmd.tun_id = match->flow.tunnel.tun_id; |
0ad90c84 JR |
2446 | pin->fmd.tun_src = match->flow.tunnel.ip_src; |
2447 | pin->fmd.tun_dst = match->flow.tunnel.ip_dst; | |
81a76618 BP |
2448 | pin->fmd.metadata = match->flow.metadata; |
2449 | memcpy(pin->fmd.regs, match->flow.regs, sizeof pin->fmd.regs); | |
7cfb9651 SH |
2450 | } |
2451 | ||
f7cc6bd8 | 2452 | enum ofperr |
65120a8a EJ |
2453 | ofputil_decode_packet_in(struct ofputil_packet_in *pin, |
2454 | const struct ofp_header *oh) | |
2455 | { | |
982697a4 BP |
2456 | enum ofpraw raw; |
2457 | struct ofpbuf b; | |
65120a8a | 2458 | |
65120a8a EJ |
2459 | memset(pin, 0, sizeof *pin); |
2460 | ||
982697a4 BP |
2461 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2462 | raw = ofpraw_pull_assert(&b); | |
2e1ae200 JR |
2463 | if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) { |
2464 | const struct ofp13_packet_in *opi; | |
81a76618 | 2465 | struct match match; |
7cfb9651 | 2466 | int error; |
2e1ae200 JR |
2467 | size_t packet_in_size; |
2468 | ||
2469 | if (raw == OFPRAW_OFPT12_PACKET_IN) { | |
2470 | packet_in_size = sizeof (struct ofp12_packet_in); | |
2471 | } else { | |
2472 | packet_in_size = sizeof (struct ofp13_packet_in); | |
2473 | } | |
7cfb9651 | 2474 | |
2e1ae200 | 2475 | opi = ofpbuf_pull(&b, packet_in_size); |
81a76618 | 2476 | error = oxm_pull_match_loose(&b, &match); |
7cfb9651 SH |
2477 | if (error) { |
2478 | return error; | |
2479 | } | |
2480 | ||
2481 | if (!ofpbuf_try_pull(&b, 2)) { | |
2482 | return OFPERR_OFPBRC_BAD_LEN; | |
2483 | } | |
2484 | ||
2e1ae200 JR |
2485 | pin->reason = opi->pi.reason; |
2486 | pin->table_id = opi->pi.table_id; | |
2487 | pin->buffer_id = ntohl(opi->pi.buffer_id); | |
2488 | pin->total_len = ntohs(opi->pi.total_len); | |
7cfb9651 | 2489 | |
2e1ae200 JR |
2490 | if (raw == OFPRAW_OFPT13_PACKET_IN) { |
2491 | pin->cookie = opi->cookie; | |
2492 | } | |
7cfb9651 | 2493 | |
81a76618 | 2494 | ofputil_decode_packet_in_finish(pin, &match, &b); |
7cfb9651 | 2495 | } else if (raw == OFPRAW_OFPT10_PACKET_IN) { |
31a9e63f | 2496 | const struct ofp10_packet_in *opi; |
982697a4 | 2497 | |
31a9e63f | 2498 | opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data)); |
65120a8a EJ |
2499 | |
2500 | pin->packet = opi->data; | |
982697a4 | 2501 | pin->packet_len = b.size; |
65120a8a | 2502 | |
5d6c3af0 | 2503 | pin->fmd.in_port = ntohs(opi->in_port); |
65120a8a EJ |
2504 | pin->reason = opi->reason; |
2505 | pin->buffer_id = ntohl(opi->buffer_id); | |
2506 | pin->total_len = ntohs(opi->total_len); | |
982697a4 | 2507 | } else if (raw == OFPRAW_NXT_PACKET_IN) { |
73dbf4ab | 2508 | const struct nx_packet_in *npi; |
81a76618 | 2509 | struct match match; |
54834960 EJ |
2510 | int error; |
2511 | ||
54834960 | 2512 | npi = ofpbuf_pull(&b, sizeof *npi); |
81a76618 | 2513 | error = nx_pull_match_loose(&b, ntohs(npi->match_len), &match, NULL, |
b5ae8913 | 2514 | NULL); |
54834960 EJ |
2515 | if (error) { |
2516 | return error; | |
2517 | } | |
2518 | ||
2519 | if (!ofpbuf_try_pull(&b, 2)) { | |
90bf1e07 | 2520 | return OFPERR_OFPBRC_BAD_LEN; |
54834960 EJ |
2521 | } |
2522 | ||
54834960 EJ |
2523 | pin->reason = npi->reason; |
2524 | pin->table_id = npi->table_id; | |
2525 | pin->cookie = npi->cookie; | |
2526 | ||
54834960 EJ |
2527 | pin->buffer_id = ntohl(npi->buffer_id); |
2528 | pin->total_len = ntohs(npi->total_len); | |
7cfb9651 | 2529 | |
81a76618 | 2530 | ofputil_decode_packet_in_finish(pin, &match, &b); |
65120a8a EJ |
2531 | } else { |
2532 | NOT_REACHED(); | |
2533 | } | |
2534 | ||
2535 | return 0; | |
2536 | } | |
2537 | ||
d94240ec | 2538 | static void |
81a76618 BP |
2539 | ofputil_packet_in_to_match(const struct ofputil_packet_in *pin, |
2540 | struct match *match) | |
d94240ec SH |
2541 | { |
2542 | int i; | |
2543 | ||
81a76618 | 2544 | match_init_catchall(match); |
42edbe39 | 2545 | if (pin->fmd.tun_id != htonll(0)) { |
81a76618 | 2546 | match_set_tun_id(match, pin->fmd.tun_id); |
42edbe39 | 2547 | } |
0ad90c84 JR |
2548 | if (pin->fmd.tun_src != htonl(0)) { |
2549 | match_set_tun_src(match, pin->fmd.tun_src); | |
2550 | } | |
2551 | if (pin->fmd.tun_dst != htonl(0)) { | |
2552 | match_set_tun_dst(match, pin->fmd.tun_dst); | |
2553 | } | |
42edbe39 | 2554 | if (pin->fmd.metadata != htonll(0)) { |
81a76618 | 2555 | match_set_metadata(match, pin->fmd.metadata); |
42edbe39 | 2556 | } |
d94240ec SH |
2557 | |
2558 | for (i = 0; i < FLOW_N_REGS; i++) { | |
42edbe39 | 2559 | if (pin->fmd.regs[i]) { |
81a76618 | 2560 | match_set_reg(match, i, pin->fmd.regs[i]); |
42edbe39 | 2561 | } |
d94240ec SH |
2562 | } |
2563 | ||
81a76618 | 2564 | match_set_in_port(match, pin->fmd.in_port); |
d94240ec SH |
2565 | } |
2566 | ||
54834960 EJ |
2567 | /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message |
2568 | * in the format specified by 'packet_in_format'. */ | |
ebb57021 | 2569 | struct ofpbuf * |
54834960 | 2570 | ofputil_encode_packet_in(const struct ofputil_packet_in *pin, |
d94240ec | 2571 | enum ofputil_protocol protocol, |
54834960 | 2572 | enum nx_packet_in_format packet_in_format) |
ebb57021 | 2573 | { |
54834960 EJ |
2574 | size_t send_len = MIN(pin->send_len, pin->packet_len); |
2575 | struct ofpbuf *packet; | |
ebb57021 BP |
2576 | |
2577 | /* Add OFPT_PACKET_IN. */ | |
2e1ae200 JR |
2578 | if (protocol == OFPUTIL_P_OF13_OXM || protocol == OFPUTIL_P_OF12_OXM) { |
2579 | struct ofp13_packet_in *opi; | |
81a76618 | 2580 | struct match match; |
2e1ae200 JR |
2581 | enum ofpraw packet_in_raw; |
2582 | enum ofp_version packet_in_version; | |
2583 | size_t packet_in_size; | |
2584 | ||
2585 | if (protocol == OFPUTIL_P_OF12_OXM) { | |
2586 | packet_in_raw = OFPRAW_OFPT12_PACKET_IN; | |
2587 | packet_in_version = OFP12_VERSION; | |
2588 | packet_in_size = sizeof (struct ofp12_packet_in); | |
2589 | } else { | |
2590 | packet_in_raw = OFPRAW_OFPT13_PACKET_IN; | |
2591 | packet_in_version = OFP13_VERSION; | |
2592 | packet_in_size = sizeof (struct ofp13_packet_in); | |
2593 | } | |
d94240ec | 2594 | |
81a76618 | 2595 | ofputil_packet_in_to_match(pin, &match); |
d94240ec SH |
2596 | |
2597 | /* The final argument is just an estimate of the space required. */ | |
2e1ae200 | 2598 | packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version, |
d94240ec SH |
2599 | htonl(0), (sizeof(struct flow_metadata) * 2 |
2600 | + 2 + send_len)); | |
2e1ae200 | 2601 | ofpbuf_put_zeros(packet, packet_in_size); |
81a76618 | 2602 | oxm_put_match(packet, &match); |
d94240ec SH |
2603 | ofpbuf_put_zeros(packet, 2); |
2604 | ofpbuf_put(packet, pin->packet, send_len); | |
2605 | ||
2606 | opi = packet->l3; | |
2e1ae200 JR |
2607 | opi->pi.buffer_id = htonl(pin->buffer_id); |
2608 | opi->pi.total_len = htons(pin->total_len); | |
2609 | opi->pi.reason = pin->reason; | |
2610 | opi->pi.table_id = pin->table_id; | |
2611 | if (protocol == OFPUTIL_P_OF13_OXM) { | |
2612 | opi->cookie = pin->cookie; | |
2613 | } | |
2614 | } else if (packet_in_format == NXPIF_OPENFLOW10) { | |
31a9e63f | 2615 | struct ofp10_packet_in *opi; |
54834960 | 2616 | |
982697a4 BP |
2617 | packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION, |
2618 | htonl(0), send_len); | |
31a9e63f | 2619 | opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data)); |
54834960 EJ |
2620 | opi->total_len = htons(pin->total_len); |
2621 | opi->in_port = htons(pin->fmd.in_port); | |
2622 | opi->reason = pin->reason; | |
2623 | opi->buffer_id = htonl(pin->buffer_id); | |
2624 | ||
2625 | ofpbuf_put(packet, pin->packet, send_len); | |
2626 | } else if (packet_in_format == NXPIF_NXM) { | |
73dbf4ab | 2627 | struct nx_packet_in *npi; |
81a76618 | 2628 | struct match match; |
54834960 | 2629 | size_t match_len; |
54834960 | 2630 | |
81a76618 | 2631 | ofputil_packet_in_to_match(pin, &match); |
54834960 | 2632 | |
982697a4 BP |
2633 | /* The final argument is just an estimate of the space required. */ |
2634 | packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION, | |
2635 | htonl(0), (sizeof(struct flow_metadata) * 2 | |
2636 | + 2 + send_len)); | |
54834960 | 2637 | ofpbuf_put_zeros(packet, sizeof *npi); |
81a76618 | 2638 | match_len = nx_put_match(packet, &match, 0, 0); |
54834960 EJ |
2639 | ofpbuf_put_zeros(packet, 2); |
2640 | ofpbuf_put(packet, pin->packet, send_len); | |
2641 | ||
982697a4 | 2642 | npi = packet->l3; |
54834960 EJ |
2643 | npi->buffer_id = htonl(pin->buffer_id); |
2644 | npi->total_len = htons(pin->total_len); | |
2645 | npi->reason = pin->reason; | |
2646 | npi->table_id = pin->table_id; | |
2647 | npi->cookie = pin->cookie; | |
2648 | npi->match_len = htons(match_len); | |
2649 | } else { | |
2650 | NOT_REACHED(); | |
2651 | } | |
982697a4 | 2652 | ofpmsg_update_length(packet); |
54834960 EJ |
2653 | |
2654 | return packet; | |
ebb57021 BP |
2655 | } |
2656 | ||
7c1a76a4 BP |
2657 | const char * |
2658 | ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason) | |
2659 | { | |
2660 | static char s[INT_STRLEN(int) + 1]; | |
2661 | ||
2662 | switch (reason) { | |
2663 | case OFPR_NO_MATCH: | |
2664 | return "no_match"; | |
2665 | case OFPR_ACTION: | |
2666 | return "action"; | |
2667 | case OFPR_INVALID_TTL: | |
2668 | return "invalid_ttl"; | |
2669 | ||
2670 | case OFPR_N_REASONS: | |
2671 | default: | |
2672 | sprintf(s, "%d", (int) reason); | |
2673 | return s; | |
2674 | } | |
2675 | } | |
2676 | ||
2677 | bool | |
2678 | ofputil_packet_in_reason_from_string(const char *s, | |
2679 | enum ofp_packet_in_reason *reason) | |
2680 | { | |
2681 | int i; | |
2682 | ||
2683 | for (i = 0; i < OFPR_N_REASONS; i++) { | |
2684 | if (!strcasecmp(s, ofputil_packet_in_reason_to_string(i))) { | |
2685 | *reason = i; | |
2686 | return true; | |
2687 | } | |
2688 | } | |
2689 | return false; | |
2690 | } | |
2691 | ||
f25d0cf3 BP |
2692 | /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in |
2693 | * 'po'. | |
2694 | * | |
2695 | * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out | |
2696 | * message's actions. The caller must initialize 'ofpacts' and retains | |
2697 | * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer. | |
2698 | * | |
2699 | * Returns 0 if successful, otherwise an OFPERR_* value. */ | |
c6a93eb7 BP |
2700 | enum ofperr |
2701 | ofputil_decode_packet_out(struct ofputil_packet_out *po, | |
982697a4 | 2702 | const struct ofp_header *oh, |
f25d0cf3 | 2703 | struct ofpbuf *ofpacts) |
c6a93eb7 | 2704 | { |
982697a4 | 2705 | enum ofpraw raw; |
c6a93eb7 BP |
2706 | struct ofpbuf b; |
2707 | ||
982697a4 BP |
2708 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2709 | raw = ofpraw_pull_assert(&b); | |
982697a4 | 2710 | |
eb5ee596 SH |
2711 | if (raw == OFPRAW_OFPT11_PACKET_OUT) { |
2712 | enum ofperr error; | |
2713 | const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo); | |
2714 | ||
2715 | po->buffer_id = ntohl(opo->buffer_id); | |
2716 | error = ofputil_port_from_ofp11(opo->in_port, &po->in_port); | |
2717 | if (error) { | |
2718 | return error; | |
2719 | } | |
2720 | ||
2721 | error = ofpacts_pull_openflow11_actions(&b, ntohs(opo->actions_len), | |
2722 | ofpacts); | |
2723 | if (error) { | |
2724 | return error; | |
2725 | } | |
eb5ee596 | 2726 | } else if (raw == OFPRAW_OFPT10_PACKET_OUT) { |
8a6bc7cd | 2727 | enum ofperr error; |
31a9e63f | 2728 | const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo); |
8a6bc7cd SH |
2729 | |
2730 | po->buffer_id = ntohl(opo->buffer_id); | |
2731 | po->in_port = ntohs(opo->in_port); | |
2732 | ||
2733 | error = ofpacts_pull_openflow10(&b, ntohs(opo->actions_len), ofpacts); | |
2734 | if (error) { | |
2735 | return error; | |
2736 | } | |
2737 | } else { | |
2738 | NOT_REACHED(); | |
2739 | } | |
2740 | ||
c6a93eb7 | 2741 | if (po->in_port >= OFPP_MAX && po->in_port != OFPP_LOCAL |
751c7785 | 2742 | && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) { |
c6a93eb7 BP |
2743 | VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16, |
2744 | po->in_port); | |
2e1bfcb6 | 2745 | return OFPERR_OFPBRC_BAD_PORT; |
c6a93eb7 BP |
2746 | } |
2747 | ||
f25d0cf3 BP |
2748 | po->ofpacts = ofpacts->data; |
2749 | po->ofpacts_len = ofpacts->size; | |
c6a93eb7 BP |
2750 | |
2751 | if (po->buffer_id == UINT32_MAX) { | |
2752 | po->packet = b.data; | |
2753 | po->packet_len = b.size; | |
2754 | } else { | |
2755 | po->packet = NULL; | |
2756 | po->packet_len = 0; | |
2757 | } | |
2758 | ||
2759 | return 0; | |
2760 | } | |
6c038611 BP |
2761 | \f |
2762 | /* ofputil_phy_port */ | |
2763 | ||
2764 | /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */ | |
2765 | BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */ | |
2766 | BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */ | |
2767 | BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */ | |
2768 | BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */ | |
2769 | BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */ | |
2770 | BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */ | |
2771 | BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */ | |
2772 | ||
2773 | /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */ | |
9e1fd49b BP |
2774 | BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4)); |
2775 | BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4)); | |
2776 | BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4)); | |
2777 | BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4)); | |
2778 | BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4)); | |
6c038611 | 2779 | |
9e1fd49b BP |
2780 | static enum netdev_features |
2781 | netdev_port_features_from_ofp10(ovs_be32 ofp10_) | |
6c038611 BP |
2782 | { |
2783 | uint32_t ofp10 = ntohl(ofp10_); | |
2784 | return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4); | |
2785 | } | |
2786 | ||
9e1fd49b BP |
2787 | static ovs_be32 |
2788 | netdev_port_features_to_ofp10(enum netdev_features features) | |
6c038611 BP |
2789 | { |
2790 | return htonl((features & 0x7f) | ((features & 0xf800) >> 4)); | |
2791 | } | |
c6a93eb7 | 2792 | |
9e1fd49b BP |
2793 | BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */ |
2794 | BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */ | |
2795 | BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */ | |
2796 | BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */ | |
2797 | BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */ | |
2798 | BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */ | |
2799 | BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */ | |
2800 | BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */ | |
2801 | BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */ | |
2802 | BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */ | |
2803 | BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */ | |
2804 | BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */ | |
2805 | BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */ | |
2806 | BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */ | |
2807 | BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */ | |
2808 | BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */ | |
2809 | ||
2810 | static enum netdev_features | |
2811 | netdev_port_features_from_ofp11(ovs_be32 ofp11) | |
2812 | { | |
2813 | return ntohl(ofp11) & 0xffff; | |
2814 | } | |
2815 | ||
2816 | static ovs_be32 | |
2817 | netdev_port_features_to_ofp11(enum netdev_features features) | |
2818 | { | |
2819 | return htonl(features & 0xffff); | |
2820 | } | |
2821 | ||
2822 | static enum ofperr | |
2823 | ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp, | |
2824 | const struct ofp10_phy_port *opp) | |
2825 | { | |
2826 | memset(pp, 0, sizeof *pp); | |
2827 | ||
2828 | pp->port_no = ntohs(opp->port_no); | |
2829 | memcpy(pp->hw_addr, opp->hw_addr, OFP_ETH_ALEN); | |
2830 | ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN); | |
2831 | ||
2832 | pp->config = ntohl(opp->config) & OFPPC10_ALL; | |
2833 | pp->state = ntohl(opp->state) & OFPPS10_ALL; | |
2834 | ||
2835 | pp->curr = netdev_port_features_from_ofp10(opp->curr); | |
2836 | pp->advertised = netdev_port_features_from_ofp10(opp->advertised); | |
2837 | pp->supported = netdev_port_features_from_ofp10(opp->supported); | |
2838 | pp->peer = netdev_port_features_from_ofp10(opp->peer); | |
2839 | ||
d02a5f8e BP |
2840 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2841 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
9e1fd49b BP |
2842 | |
2843 | return 0; | |
2844 | } | |
2845 | ||
2846 | static enum ofperr | |
2847 | ofputil_decode_ofp11_port(struct ofputil_phy_port *pp, | |
2848 | const struct ofp11_port *op) | |
2849 | { | |
2850 | enum ofperr error; | |
2851 | ||
2852 | memset(pp, 0, sizeof *pp); | |
2853 | ||
2854 | error = ofputil_port_from_ofp11(op->port_no, &pp->port_no); | |
2855 | if (error) { | |
2856 | return error; | |
2857 | } | |
2858 | memcpy(pp->hw_addr, op->hw_addr, OFP_ETH_ALEN); | |
2859 | ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN); | |
2860 | ||
2861 | pp->config = ntohl(op->config) & OFPPC11_ALL; | |
2862 | pp->state = ntohl(op->state) & OFPPC11_ALL; | |
2863 | ||
2864 | pp->curr = netdev_port_features_from_ofp11(op->curr); | |
2865 | pp->advertised = netdev_port_features_from_ofp11(op->advertised); | |
2866 | pp->supported = netdev_port_features_from_ofp11(op->supported); | |
2867 | pp->peer = netdev_port_features_from_ofp11(op->peer); | |
2868 | ||
2869 | pp->curr_speed = ntohl(op->curr_speed); | |
2870 | pp->max_speed = ntohl(op->max_speed); | |
2871 | ||
2872 | return 0; | |
2873 | } | |
2874 | ||
5b5a3a67 | 2875 | static size_t |
2e3fa633 SH |
2876 | ofputil_get_phy_port_size(enum ofp_version ofp_version) |
2877 | { | |
2878 | switch (ofp_version) { | |
2879 | case OFP10_VERSION: | |
2880 | return sizeof(struct ofp10_phy_port); | |
2881 | case OFP11_VERSION: | |
2882 | case OFP12_VERSION: | |
2e1ae200 | 2883 | case OFP13_VERSION: |
2e3fa633 SH |
2884 | return sizeof(struct ofp11_port); |
2885 | default: | |
2886 | NOT_REACHED(); | |
2887 | } | |
5b5a3a67 JP |
2888 | } |
2889 | ||
9e1fd49b BP |
2890 | static void |
2891 | ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp, | |
2892 | struct ofp10_phy_port *opp) | |
2893 | { | |
2894 | memset(opp, 0, sizeof *opp); | |
2895 | ||
2896 | opp->port_no = htons(pp->port_no); | |
2897 | memcpy(opp->hw_addr, pp->hw_addr, ETH_ADDR_LEN); | |
2898 | ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN); | |
2899 | ||
2900 | opp->config = htonl(pp->config & OFPPC10_ALL); | |
2901 | opp->state = htonl(pp->state & OFPPS10_ALL); | |
2902 | ||
2903 | opp->curr = netdev_port_features_to_ofp10(pp->curr); | |
2904 | opp->advertised = netdev_port_features_to_ofp10(pp->advertised); | |
2905 | opp->supported = netdev_port_features_to_ofp10(pp->supported); | |
2906 | opp->peer = netdev_port_features_to_ofp10(pp->peer); | |
2907 | } | |
2908 | ||
2909 | static void | |
2910 | ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp, | |
2911 | struct ofp11_port *op) | |
2912 | { | |
2913 | memset(op, 0, sizeof *op); | |
2914 | ||
2915 | op->port_no = ofputil_port_to_ofp11(pp->port_no); | |
2916 | memcpy(op->hw_addr, pp->hw_addr, ETH_ADDR_LEN); | |
2917 | ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN); | |
2918 | ||
2919 | op->config = htonl(pp->config & OFPPC11_ALL); | |
2920 | op->state = htonl(pp->state & OFPPS11_ALL); | |
2921 | ||
2922 | op->curr = netdev_port_features_to_ofp11(pp->curr); | |
2923 | op->advertised = netdev_port_features_to_ofp11(pp->advertised); | |
2924 | op->supported = netdev_port_features_to_ofp11(pp->supported); | |
2925 | op->peer = netdev_port_features_to_ofp11(pp->peer); | |
2926 | ||
2927 | op->curr_speed = htonl(pp->curr_speed); | |
2928 | op->max_speed = htonl(pp->max_speed); | |
2929 | } | |
2930 | ||
2931 | static void | |
2e3fa633 SH |
2932 | ofputil_put_phy_port(enum ofp_version ofp_version, |
2933 | const struct ofputil_phy_port *pp, struct ofpbuf *b) | |
9e1fd49b | 2934 | { |
2e3fa633 SH |
2935 | switch (ofp_version) { |
2936 | case OFP10_VERSION: { | |
9e1fd49b BP |
2937 | struct ofp10_phy_port *opp; |
2938 | if (b->size + sizeof *opp <= UINT16_MAX) { | |
2939 | opp = ofpbuf_put_uninit(b, sizeof *opp); | |
2940 | ofputil_encode_ofp10_phy_port(pp, opp); | |
2941 | } | |
2e3fa633 SH |
2942 | break; |
2943 | } | |
2944 | ||
2945 | case OFP11_VERSION: | |
2e1ae200 JR |
2946 | case OFP12_VERSION: |
2947 | case OFP13_VERSION: { | |
9e1fd49b BP |
2948 | struct ofp11_port *op; |
2949 | if (b->size + sizeof *op <= UINT16_MAX) { | |
2950 | op = ofpbuf_put_uninit(b, sizeof *op); | |
2951 | ofputil_encode_ofp11_port(pp, op); | |
2952 | } | |
2e3fa633 SH |
2953 | break; |
2954 | } | |
2955 | ||
2956 | default: | |
2957 | NOT_REACHED(); | |
9e1fd49b BP |
2958 | } |
2959 | } | |
2be393ed JP |
2960 | |
2961 | void | |
2e3fa633 | 2962 | ofputil_append_port_desc_stats_reply(enum ofp_version ofp_version, |
2be393ed JP |
2963 | const struct ofputil_phy_port *pp, |
2964 | struct list *replies) | |
2965 | { | |
2e3fa633 SH |
2966 | switch (ofp_version) { |
2967 | case OFP10_VERSION: { | |
2be393ed JP |
2968 | struct ofp10_phy_port *opp; |
2969 | ||
982697a4 | 2970 | opp = ofpmp_append(replies, sizeof *opp); |
2be393ed | 2971 | ofputil_encode_ofp10_phy_port(pp, opp); |
2e3fa633 SH |
2972 | break; |
2973 | } | |
2974 | ||
2975 | case OFP11_VERSION: | |
2e1ae200 JR |
2976 | case OFP12_VERSION: |
2977 | case OFP13_VERSION: { | |
2be393ed JP |
2978 | struct ofp11_port *op; |
2979 | ||
982697a4 | 2980 | op = ofpmp_append(replies, sizeof *op); |
2be393ed | 2981 | ofputil_encode_ofp11_port(pp, op); |
2e3fa633 SH |
2982 | break; |
2983 | } | |
2984 | ||
2985 | default: | |
2986 | NOT_REACHED(); | |
2be393ed JP |
2987 | } |
2988 | } | |
9e1fd49b BP |
2989 | \f |
2990 | /* ofputil_switch_features */ | |
2991 | ||
2992 | #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \ | |
60202987 | 2993 | OFPC_IP_REASM | OFPC_QUEUE_STATS) |
9e1fd49b BP |
2994 | BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS); |
2995 | BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS); | |
2996 | BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS); | |
2997 | BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM); | |
2998 | BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS); | |
2999 | BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP); | |
3000 | ||
3001 | struct ofputil_action_bit_translation { | |
3002 | enum ofputil_action_bitmap ofputil_bit; | |
3003 | int of_bit; | |
3004 | }; | |
3005 | ||
3006 | static const struct ofputil_action_bit_translation of10_action_bits[] = { | |
3007 | { OFPUTIL_A_OUTPUT, OFPAT10_OUTPUT }, | |
3008 | { OFPUTIL_A_SET_VLAN_VID, OFPAT10_SET_VLAN_VID }, | |
3009 | { OFPUTIL_A_SET_VLAN_PCP, OFPAT10_SET_VLAN_PCP }, | |
3010 | { OFPUTIL_A_STRIP_VLAN, OFPAT10_STRIP_VLAN }, | |
3011 | { OFPUTIL_A_SET_DL_SRC, OFPAT10_SET_DL_SRC }, | |
3012 | { OFPUTIL_A_SET_DL_DST, OFPAT10_SET_DL_DST }, | |
3013 | { OFPUTIL_A_SET_NW_SRC, OFPAT10_SET_NW_SRC }, | |
3014 | { OFPUTIL_A_SET_NW_DST, OFPAT10_SET_NW_DST }, | |
3015 | { OFPUTIL_A_SET_NW_TOS, OFPAT10_SET_NW_TOS }, | |
3016 | { OFPUTIL_A_SET_TP_SRC, OFPAT10_SET_TP_SRC }, | |
3017 | { OFPUTIL_A_SET_TP_DST, OFPAT10_SET_TP_DST }, | |
3018 | { OFPUTIL_A_ENQUEUE, OFPAT10_ENQUEUE }, | |
3019 | { 0, 0 }, | |
3020 | }; | |
3021 | ||
9e1fd49b BP |
3022 | static enum ofputil_action_bitmap |
3023 | decode_action_bits(ovs_be32 of_actions, | |
3024 | const struct ofputil_action_bit_translation *x) | |
3025 | { | |
3026 | enum ofputil_action_bitmap ofputil_actions; | |
3027 | ||
3028 | ofputil_actions = 0; | |
3029 | for (; x->ofputil_bit; x++) { | |
3030 | if (of_actions & htonl(1u << x->of_bit)) { | |
3031 | ofputil_actions |= x->ofputil_bit; | |
3032 | } | |
3033 | } | |
3034 | return ofputil_actions; | |
3035 | } | |
3036 | ||
60202987 SH |
3037 | static uint32_t |
3038 | ofputil_capabilities_mask(enum ofp_version ofp_version) | |
3039 | { | |
3040 | /* Handle capabilities whose bit is unique for all Open Flow versions */ | |
3041 | switch (ofp_version) { | |
3042 | case OFP10_VERSION: | |
3043 | case OFP11_VERSION: | |
3044 | return OFPC_COMMON | OFPC_ARP_MATCH_IP; | |
3045 | case OFP12_VERSION: | |
2e1ae200 | 3046 | case OFP13_VERSION: |
60202987 SH |
3047 | return OFPC_COMMON | OFPC12_PORT_BLOCKED; |
3048 | default: | |
3049 | /* Caller needs to check osf->header.version itself */ | |
3050 | return 0; | |
3051 | } | |
3052 | } | |
3053 | ||
9e1fd49b BP |
3054 | /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an |
3055 | * abstract representation in '*features'. Initializes '*b' to iterate over | |
3056 | * the OpenFlow port structures following 'osf' with later calls to | |
2be393ed | 3057 | * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an |
9e1fd49b BP |
3058 | * OFPERR_* value. */ |
3059 | enum ofperr | |
982697a4 | 3060 | ofputil_decode_switch_features(const struct ofp_header *oh, |
9e1fd49b BP |
3061 | struct ofputil_switch_features *features, |
3062 | struct ofpbuf *b) | |
3063 | { | |
982697a4 BP |
3064 | const struct ofp_switch_features *osf; |
3065 | enum ofpraw raw; | |
3066 | ||
3067 | ofpbuf_use_const(b, oh, ntohs(oh->length)); | |
3068 | raw = ofpraw_pull_assert(b); | |
9e1fd49b | 3069 | |
982697a4 | 3070 | osf = ofpbuf_pull(b, sizeof *osf); |
9e1fd49b BP |
3071 | features->datapath_id = ntohll(osf->datapath_id); |
3072 | features->n_buffers = ntohl(osf->n_buffers); | |
3073 | features->n_tables = osf->n_tables; | |
2e1ae200 | 3074 | features->auxiliary_id = 0; |
9e1fd49b | 3075 | |
60202987 SH |
3076 | features->capabilities = ntohl(osf->capabilities) & |
3077 | ofputil_capabilities_mask(oh->version); | |
9e1fd49b | 3078 | |
982697a4 | 3079 | if (b->size % ofputil_get_phy_port_size(oh->version)) { |
5b5a3a67 JP |
3080 | return OFPERR_OFPBRC_BAD_LEN; |
3081 | } | |
3082 | ||
982697a4 | 3083 | if (raw == OFPRAW_OFPT10_FEATURES_REPLY) { |
9e1fd49b BP |
3084 | if (osf->capabilities & htonl(OFPC10_STP)) { |
3085 | features->capabilities |= OFPUTIL_C_STP; | |
3086 | } | |
3087 | features->actions = decode_action_bits(osf->actions, of10_action_bits); | |
2e1ae200 JR |
3088 | } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY |
3089 | || raw == OFPRAW_OFPT13_FEATURES_REPLY) { | |
9e1fd49b BP |
3090 | if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) { |
3091 | features->capabilities |= OFPUTIL_C_GROUP_STATS; | |
3092 | } | |
34b28fc7 | 3093 | features->actions = 0; |
2e1ae200 JR |
3094 | if (raw == OFPRAW_OFPT13_FEATURES_REPLY) { |
3095 | features->auxiliary_id = osf->auxiliary_id; | |
3096 | } | |
9e1fd49b BP |
3097 | } else { |
3098 | return OFPERR_OFPBRC_BAD_VERSION; | |
3099 | } | |
3100 | ||
3101 | return 0; | |
3102 | } | |
3103 | ||
982697a4 | 3104 | /* Returns true if the maximum number of ports are in 'oh'. */ |
347b7ac4 | 3105 | static bool |
982697a4 | 3106 | max_ports_in_features(const struct ofp_header *oh) |
347b7ac4 | 3107 | { |
982697a4 BP |
3108 | size_t pp_size = ofputil_get_phy_port_size(oh->version); |
3109 | return ntohs(oh->length) + pp_size > UINT16_MAX; | |
347b7ac4 JP |
3110 | } |
3111 | ||
3112 | /* Given a buffer 'b' that contains a Features Reply message, checks if | |
3113 | * it contains the maximum number of ports that will fit. If so, it | |
3114 | * returns true and removes the ports from the message. The caller | |
3115 | * should then send an OFPST_PORT_DESC stats request to get the ports, | |
3116 | * since the switch may have more ports than could be represented in the | |
3117 | * Features Reply. Otherwise, returns false. | |
3118 | */ | |
3119 | bool | |
3120 | ofputil_switch_features_ports_trunc(struct ofpbuf *b) | |
3121 | { | |
982697a4 | 3122 | struct ofp_header *oh = b->data; |
347b7ac4 | 3123 | |
982697a4 | 3124 | if (max_ports_in_features(oh)) { |
347b7ac4 | 3125 | /* Remove all the ports. */ |
982697a4 BP |
3126 | b->size = (sizeof(struct ofp_header) |
3127 | + sizeof(struct ofp_switch_features)); | |
3128 | ofpmsg_update_length(b); | |
347b7ac4 JP |
3129 | |
3130 | return true; | |
3131 | } | |
3132 | ||
3133 | return false; | |
3134 | } | |
3135 | ||
9e1fd49b BP |
3136 | static ovs_be32 |
3137 | encode_action_bits(enum ofputil_action_bitmap ofputil_actions, | |
3138 | const struct ofputil_action_bit_translation *x) | |
3139 | { | |
3140 | uint32_t of_actions; | |
3141 | ||
3142 | of_actions = 0; | |
3143 | for (; x->ofputil_bit; x++) { | |
3144 | if (ofputil_actions & x->ofputil_bit) { | |
3145 | of_actions |= 1 << x->of_bit; | |
3146 | } | |
3147 | } | |
3148 | return htonl(of_actions); | |
3149 | } | |
3150 | ||
3151 | /* Returns a buffer owned by the caller that encodes 'features' in the format | |
3152 | * required by 'protocol' with the given 'xid'. The caller should append port | |
3153 | * information to the buffer with subsequent calls to | |
3154 | * ofputil_put_switch_features_port(). */ | |
3155 | struct ofpbuf * | |
3156 | ofputil_encode_switch_features(const struct ofputil_switch_features *features, | |
3157 | enum ofputil_protocol protocol, ovs_be32 xid) | |
3158 | { | |
3159 | struct ofp_switch_features *osf; | |
3160 | struct ofpbuf *b; | |
2e3fa633 SH |
3161 | enum ofp_version version; |
3162 | enum ofpraw raw; | |
982697a4 BP |
3163 | |
3164 | version = ofputil_protocol_to_ofp_version(protocol); | |
2e3fa633 SH |
3165 | switch (version) { |
3166 | case OFP10_VERSION: | |
3167 | raw = OFPRAW_OFPT10_FEATURES_REPLY; | |
3168 | break; | |
3169 | case OFP11_VERSION: | |
3170 | case OFP12_VERSION: | |
3171 | raw = OFPRAW_OFPT11_FEATURES_REPLY; | |
3172 | break; | |
2e1ae200 JR |
3173 | case OFP13_VERSION: |
3174 | raw = OFPRAW_OFPT13_FEATURES_REPLY; | |
3175 | break; | |
2e3fa633 SH |
3176 | default: |
3177 | NOT_REACHED(); | |
3178 | } | |
3179 | b = ofpraw_alloc_xid(raw, version, xid, 0); | |
982697a4 | 3180 | osf = ofpbuf_put_zeros(b, sizeof *osf); |
9e1fd49b BP |
3181 | osf->datapath_id = htonll(features->datapath_id); |
3182 | osf->n_buffers = htonl(features->n_buffers); | |
3183 | osf->n_tables = features->n_tables; | |
3184 | ||
3185 | osf->capabilities = htonl(features->capabilities & OFPC_COMMON); | |
60202987 SH |
3186 | osf->capabilities = htonl(features->capabilities & |
3187 | ofputil_capabilities_mask(version)); | |
2e3fa633 SH |
3188 | switch (version) { |
3189 | case OFP10_VERSION: | |
9e1fd49b BP |
3190 | if (features->capabilities & OFPUTIL_C_STP) { |
3191 | osf->capabilities |= htonl(OFPC10_STP); | |
3192 | } | |
3193 | osf->actions = encode_action_bits(features->actions, of10_action_bits); | |
2e3fa633 | 3194 | break; |
2e1ae200 JR |
3195 | case OFP13_VERSION: |
3196 | osf->auxiliary_id = features->auxiliary_id; | |
3197 | /* fall through */ | |
2e3fa633 SH |
3198 | case OFP11_VERSION: |
3199 | case OFP12_VERSION: | |
9e1fd49b BP |
3200 | if (features->capabilities & OFPUTIL_C_GROUP_STATS) { |
3201 | osf->capabilities |= htonl(OFPC11_GROUP_STATS); | |
3202 | } | |
2e3fa633 SH |
3203 | break; |
3204 | default: | |
3205 | NOT_REACHED(); | |
9e1fd49b BP |
3206 | } |
3207 | ||
3208 | return b; | |
3209 | } | |
3210 | ||
3211 | /* Encodes 'pp' into the format required by the switch_features message already | |
3212 | * in 'b', which should have been returned by ofputil_encode_switch_features(), | |
3213 | * and appends the encoded version to 'b'. */ | |
3214 | void | |
3215 | ofputil_put_switch_features_port(const struct ofputil_phy_port *pp, | |
3216 | struct ofpbuf *b) | |
3217 | { | |
982697a4 | 3218 | const struct ofp_header *oh = b->data; |
9e1fd49b | 3219 | |
e0c91c0c SK |
3220 | if (oh->version < OFP13_VERSION) { |
3221 | ofputil_put_phy_port(oh->version, pp, b); | |
3222 | } | |
9e1fd49b BP |
3223 | } |
3224 | \f | |
3225 | /* ofputil_port_status */ | |
3226 | ||
3227 | /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form | |
3228 | * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */ | |
3229 | enum ofperr | |
982697a4 | 3230 | ofputil_decode_port_status(const struct ofp_header *oh, |
9e1fd49b BP |
3231 | struct ofputil_port_status *ps) |
3232 | { | |
982697a4 | 3233 | const struct ofp_port_status *ops; |
9e1fd49b BP |
3234 | struct ofpbuf b; |
3235 | int retval; | |
3236 | ||
982697a4 BP |
3237 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
3238 | ofpraw_pull_assert(&b); | |
3239 | ops = ofpbuf_pull(&b, sizeof *ops); | |
3240 | ||
9e1fd49b BP |
3241 | if (ops->reason != OFPPR_ADD && |
3242 | ops->reason != OFPPR_DELETE && | |
3243 | ops->reason != OFPPR_MODIFY) { | |
3244 | return OFPERR_NXBRC_BAD_REASON; | |
3245 | } | |
3246 | ps->reason = ops->reason; | |
3247 | ||
982697a4 | 3248 | retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc); |
cb22974d | 3249 | ovs_assert(retval != EOF); |
9e1fd49b BP |
3250 | return retval; |
3251 | } | |
3252 | ||
3253 | /* Converts the abstract form of a "port status" message in '*ps' into an | |
3254 | * OpenFlow message suitable for 'protocol', and returns that encoded form in | |
3255 | * a buffer owned by the caller. */ | |
3256 | struct ofpbuf * | |
3257 | ofputil_encode_port_status(const struct ofputil_port_status *ps, | |
3258 | enum ofputil_protocol protocol) | |
3259 | { | |
3260 | struct ofp_port_status *ops; | |
3261 | struct ofpbuf *b; | |
2e3fa633 SH |
3262 | enum ofp_version version; |
3263 | enum ofpraw raw; | |
982697a4 BP |
3264 | |
3265 | version = ofputil_protocol_to_ofp_version(protocol); | |
2e3fa633 SH |
3266 | switch (version) { |
3267 | case OFP10_VERSION: | |
3268 | raw = OFPRAW_OFPT10_PORT_STATUS; | |
3269 | break; | |
3270 | ||
3271 | case OFP11_VERSION: | |
3272 | case OFP12_VERSION: | |
2e1ae200 | 3273 | case OFP13_VERSION: |
2e3fa633 SH |
3274 | raw = OFPRAW_OFPT11_PORT_STATUS; |
3275 | break; | |
3276 | ||
3277 | default: | |
3278 | NOT_REACHED(); | |
3279 | } | |
3280 | ||
3281 | b = ofpraw_alloc_xid(raw, version, htonl(0), 0); | |
982697a4 | 3282 | ops = ofpbuf_put_zeros(b, sizeof *ops); |
9e1fd49b | 3283 | ops->reason = ps->reason; |
982697a4 BP |
3284 | ofputil_put_phy_port(version, &ps->desc, b); |
3285 | ofpmsg_update_length(b); | |
9e1fd49b BP |
3286 | return b; |
3287 | } | |
3288 | \f | |
3289 | /* ofputil_port_mod */ | |
3290 | ||
3291 | /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in | |
3292 | * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */ | |
3293 | enum ofperr | |
3294 | ofputil_decode_port_mod(const struct ofp_header *oh, | |
3295 | struct ofputil_port_mod *pm) | |
3296 | { | |
982697a4 BP |
3297 | enum ofpraw raw; |
3298 | struct ofpbuf b; | |
9e1fd49b | 3299 | |
982697a4 BP |
3300 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
3301 | raw = ofpraw_pull_assert(&b); | |
3302 | ||
3303 | if (raw == OFPRAW_OFPT10_PORT_MOD) { | |
3304 | const struct ofp10_port_mod *opm = b.data; | |
9e1fd49b BP |
3305 | |
3306 | pm->port_no = ntohs(opm->port_no); | |
3307 | memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN); | |
3308 | pm->config = ntohl(opm->config) & OFPPC10_ALL; | |
3309 | pm->mask = ntohl(opm->mask) & OFPPC10_ALL; | |
3310 | pm->advertise = netdev_port_features_from_ofp10(opm->advertise); | |
982697a4 BP |
3311 | } else if (raw == OFPRAW_OFPT11_PORT_MOD) { |
3312 | const struct ofp11_port_mod *opm = b.data; | |
9e1fd49b BP |
3313 | enum ofperr error; |
3314 | ||
9e1fd49b BP |
3315 | error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no); |
3316 | if (error) { | |
3317 | return error; | |
3318 | } | |
3319 | ||
3320 | memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN); | |
3321 | pm->config = ntohl(opm->config) & OFPPC11_ALL; | |
3322 | pm->mask = ntohl(opm->mask) & OFPPC11_ALL; | |
3323 | pm->advertise = netdev_port_features_from_ofp11(opm->advertise); | |
3324 | } else { | |
982697a4 | 3325 | return OFPERR_OFPBRC_BAD_TYPE; |
9e1fd49b BP |
3326 | } |
3327 | ||
3328 | pm->config &= pm->mask; | |
3329 | return 0; | |
3330 | } | |
3331 | ||
3332 | /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow | |
3333 | * message suitable for 'protocol', and returns that encoded form in a buffer | |
3334 | * owned by the caller. */ | |
3335 | struct ofpbuf * | |
3336 | ofputil_encode_port_mod(const struct ofputil_port_mod *pm, | |
3337 | enum ofputil_protocol protocol) | |
3338 | { | |
2e3fa633 | 3339 | enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol); |
9e1fd49b BP |
3340 | struct ofpbuf *b; |
3341 | ||
2e3fa633 SH |
3342 | switch (ofp_version) { |
3343 | case OFP10_VERSION: { | |
9e1fd49b BP |
3344 | struct ofp10_port_mod *opm; |
3345 | ||
982697a4 BP |
3346 | b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0); |
3347 | opm = ofpbuf_put_zeros(b, sizeof *opm); | |
9e1fd49b BP |
3348 | opm->port_no = htons(pm->port_no); |
3349 | memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN); | |
3350 | opm->config = htonl(pm->config & OFPPC10_ALL); | |
3351 | opm->mask = htonl(pm->mask & OFPPC10_ALL); | |
3352 | opm->advertise = netdev_port_features_to_ofp10(pm->advertise); | |
2e3fa633 SH |
3353 | break; |
3354 | } | |
3355 | ||
5fe7c919 | 3356 | case OFP11_VERSION: |
2e1ae200 JR |
3357 | case OFP12_VERSION: |
3358 | case OFP13_VERSION: { | |
9e1fd49b BP |
3359 | struct ofp11_port_mod *opm; |
3360 | ||
982697a4 BP |
3361 | b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0); |
3362 | opm = ofpbuf_put_zeros(b, sizeof *opm); | |
026a5179 | 3363 | opm->port_no = ofputil_port_to_ofp11(pm->port_no); |
9e1fd49b BP |
3364 | memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN); |
3365 | opm->config = htonl(pm->config & OFPPC11_ALL); | |
3366 | opm->mask = htonl(pm->mask & OFPPC11_ALL); | |
3367 | opm->advertise = netdev_port_features_to_ofp11(pm->advertise); | |
2e3fa633 SH |
3368 | break; |
3369 | } | |
3370 | ||
2e3fa633 | 3371 | default: |
9e1fd49b BP |
3372 | NOT_REACHED(); |
3373 | } | |
3374 | ||
3375 | return b; | |
3376 | } | |
2b07c8b1 | 3377 | \f |
6ea4776b JR |
3378 | /* ofputil_role_request */ |
3379 | ||
3380 | /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into | |
3381 | * an abstract form in '*rr'. Returns 0 if successful, otherwise an | |
3382 | * OFPERR_* value. */ | |
3383 | enum ofperr | |
3384 | ofputil_decode_role_message(const struct ofp_header *oh, | |
3385 | struct ofputil_role_request *rr) | |
3386 | { | |
6ea4776b JR |
3387 | struct ofpbuf b; |
3388 | enum ofpraw raw; | |
3389 | ||
6ea4776b JR |
3390 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
3391 | raw = ofpraw_pull_assert(&b); | |
3392 | ||
f4f1ea7e BP |
3393 | if (raw == OFPRAW_OFPT12_ROLE_REQUEST || |
3394 | raw == OFPRAW_OFPT12_ROLE_REPLY) { | |
3395 | const struct ofp12_role_request *orr = b.l3; | |
6ea4776b | 3396 | |
f4f1ea7e BP |
3397 | if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) && |
3398 | orr->role != htonl(OFPCR12_ROLE_EQUAL) && | |
3399 | orr->role != htonl(OFPCR12_ROLE_MASTER) && | |
3400 | orr->role != htonl(OFPCR12_ROLE_SLAVE)) { | |
3401 | return OFPERR_OFPRRFC_BAD_ROLE; | |
6ea4776b JR |
3402 | } |
3403 | ||
f4f1ea7e | 3404 | rr->role = ntohl(orr->role); |
147cc9d3 BP |
3405 | if (raw == OFPRAW_OFPT12_ROLE_REQUEST |
3406 | ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE) | |
3407 | : orr->generation_id == htonll(UINT64_MAX)) { | |
f4f1ea7e BP |
3408 | rr->have_generation_id = false; |
3409 | rr->generation_id = 0; | |
3410 | } else { | |
3411 | rr->have_generation_id = true; | |
3412 | rr->generation_id = ntohll(orr->generation_id); | |
3413 | } | |
3414 | } else if (raw == OFPRAW_NXT_ROLE_REQUEST || | |
3415 | raw == OFPRAW_NXT_ROLE_REPLY) { | |
3416 | const struct nx_role_request *nrr = b.l3; | |
3417 | ||
3418 | BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL); | |
3419 | BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER); | |
3420 | BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE); | |
3421 | ||
3422 | if (nrr->role != htonl(NX_ROLE_OTHER) && | |
3423 | nrr->role != htonl(NX_ROLE_MASTER) && | |
3424 | nrr->role != htonl(NX_ROLE_SLAVE)) { | |
3425 | return OFPERR_OFPRRFC_BAD_ROLE; | |
3426 | } | |
6ea4776b | 3427 | |
f4f1ea7e BP |
3428 | rr->role = ntohl(nrr->role) + 1; |
3429 | rr->have_generation_id = false; | |
3430 | rr->generation_id = 0; | |
3431 | } else { | |
3432 | NOT_REACHED(); | |
6ea4776b JR |
3433 | } |
3434 | ||
6ea4776b JR |
3435 | return 0; |
3436 | } | |
3437 | ||
3438 | /* Returns an encoded form of a role reply suitable for the "request" in a | |
3439 | * buffer owned by the caller. */ | |
3440 | struct ofpbuf * | |
3441 | ofputil_encode_role_reply(const struct ofp_header *request, | |
f4f1ea7e | 3442 | const struct ofputil_role_request *rr) |
6ea4776b | 3443 | { |
6ea4776b | 3444 | struct ofpbuf *buf; |
6ea4776b JR |
3445 | enum ofpraw raw; |
3446 | ||
f4f1ea7e | 3447 | raw = ofpraw_decode_assert(request); |
6ea4776b | 3448 | if (raw == OFPRAW_OFPT12_ROLE_REQUEST) { |
f4f1ea7e | 3449 | struct ofp12_role_request *orr; |
6ea4776b | 3450 | |
f4f1ea7e BP |
3451 | buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0); |
3452 | orr = ofpbuf_put_zeros(buf, sizeof *orr); | |
6ea4776b | 3453 | |
147cc9d3 BP |
3454 | orr->role = htonl(rr->role); |
3455 | orr->generation_id = htonll(rr->have_generation_id | |
3456 | ? rr->generation_id | |
3457 | : UINT64_MAX); | |
f4f1ea7e BP |
3458 | } else if (raw == OFPRAW_NXT_ROLE_REQUEST) { |
3459 | struct nx_role_request *nrr; | |
3460 | ||
3461 | BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1); | |
3462 | BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1); | |
3463 | BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1); | |
3464 | ||
3465 | buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0); | |
3466 | nrr = ofpbuf_put_zeros(buf, sizeof *nrr); | |
3467 | nrr->role = htonl(rr->role - 1); | |
3468 | } else { | |
3469 | NOT_REACHED(); | |
6ea4776b | 3470 | } |
6ea4776b JR |
3471 | |
3472 | return buf; | |
3473 | } | |
3474 | \f | |
307975da SH |
3475 | /* Table stats. */ |
3476 | ||
3477 | static void | |
3478 | ofputil_put_ofp10_table_stats(const struct ofp12_table_stats *in, | |
3479 | struct ofpbuf *buf) | |
3480 | { | |
3481 | struct wc_map { | |
31a9e63f | 3482 | enum ofp10_flow_wildcards wc10; |
307975da SH |
3483 | enum oxm12_ofb_match_fields mf12; |
3484 | }; | |
3485 | ||
3486 | static const struct wc_map wc_map[] = { | |
3487 | { OFPFW10_IN_PORT, OFPXMT12_OFB_IN_PORT }, | |
3488 | { OFPFW10_DL_VLAN, OFPXMT12_OFB_VLAN_VID }, | |
3489 | { OFPFW10_DL_SRC, OFPXMT12_OFB_ETH_SRC }, | |
3490 | { OFPFW10_DL_DST, OFPXMT12_OFB_ETH_DST}, | |
3491 | { OFPFW10_DL_TYPE, OFPXMT12_OFB_ETH_TYPE }, | |
3492 | { OFPFW10_NW_PROTO, OFPXMT12_OFB_IP_PROTO }, | |
3493 | { OFPFW10_TP_SRC, OFPXMT12_OFB_TCP_SRC }, | |
3494 | { OFPFW10_TP_DST, OFPXMT12_OFB_TCP_DST }, | |
3495 | { OFPFW10_NW_SRC_MASK, OFPXMT12_OFB_IPV4_SRC }, | |
3496 | { OFPFW10_NW_DST_MASK, OFPXMT12_OFB_IPV4_DST }, | |
3497 | { OFPFW10_DL_VLAN_PCP, OFPXMT12_OFB_VLAN_PCP }, | |
3498 | { OFPFW10_NW_TOS, OFPXMT12_OFB_IP_DSCP }, | |
3499 | }; | |
3500 | ||
3501 | struct ofp10_table_stats *out; | |
3502 | const struct wc_map *p; | |
3503 | ||
3bdc692b | 3504 | out = ofpbuf_put_zeros(buf, sizeof *out); |
307975da | 3505 | out->table_id = in->table_id; |
3bdc692b | 3506 | ovs_strlcpy(out->name, in->name, sizeof out->name); |
307975da SH |
3507 | out->wildcards = 0; |
3508 | for (p = wc_map; p < &wc_map[ARRAY_SIZE(wc_map)]; p++) { | |
3509 | if (in->wildcards & htonll(1ULL << p->mf12)) { | |
3510 | out->wildcards |= htonl(p->wc10); | |
3511 | } | |
3512 | } | |
3513 | out->max_entries = in->max_entries; | |
3514 | out->active_count = in->active_count; | |
3515 | put_32aligned_be64(&out->lookup_count, in->lookup_count); | |
3516 | put_32aligned_be64(&out->matched_count, in->matched_count); | |
3517 | } | |
3518 | ||
3519 | static ovs_be32 | |
3520 | oxm12_to_ofp11_flow_match_fields(ovs_be64 oxm12) | |
3521 | { | |
3522 | struct map { | |
3523 | enum ofp11_flow_match_fields fmf11; | |
3524 | enum oxm12_ofb_match_fields mf12; | |
3525 | }; | |
3526 | ||
3527 | static const struct map map[] = { | |
3528 | { OFPFMF11_IN_PORT, OFPXMT12_OFB_IN_PORT }, | |
3529 | { OFPFMF11_DL_VLAN, OFPXMT12_OFB_VLAN_VID }, | |
3530 | { OFPFMF11_DL_VLAN_PCP, OFPXMT12_OFB_VLAN_PCP }, | |
3531 | { OFPFMF11_DL_TYPE, OFPXMT12_OFB_ETH_TYPE }, | |
3532 | { OFPFMF11_NW_TOS, OFPXMT12_OFB_IP_DSCP }, | |
3533 | { OFPFMF11_NW_PROTO, OFPXMT12_OFB_IP_PROTO }, | |
3534 | { OFPFMF11_TP_SRC, OFPXMT12_OFB_TCP_SRC }, | |
3535 | { OFPFMF11_TP_DST, OFPXMT12_OFB_TCP_DST }, | |
3536 | { OFPFMF11_MPLS_LABEL, OFPXMT12_OFB_MPLS_LABEL }, | |
3537 | { OFPFMF11_MPLS_TC, OFPXMT12_OFB_MPLS_TC }, | |
3538 | /* I don't know what OFPFMF11_TYPE means. */ | |
3539 | { OFPFMF11_DL_SRC, OFPXMT12_OFB_ETH_SRC }, | |
3540 | { OFPFMF11_DL_DST, OFPXMT12_OFB_ETH_DST }, | |
3541 | { OFPFMF11_NW_SRC, OFPXMT12_OFB_IPV4_SRC }, | |
3542 | { OFPFMF11_NW_DST, OFPXMT12_OFB_IPV4_DST }, | |
3543 | { OFPFMF11_METADATA, OFPXMT12_OFB_METADATA }, | |
3544 | }; | |
3545 | ||
3546 | const struct map *p; | |
3547 | uint32_t fmf11; | |
3548 | ||
3549 | fmf11 = 0; | |
3550 | for (p = map; p < &map[ARRAY_SIZE(map)]; p++) { | |
3551 | if (oxm12 & htonll(1ULL << p->mf12)) { | |
3552 | fmf11 |= p->fmf11; | |
3553 | } | |
3554 | } | |
3555 | return htonl(fmf11); | |
3556 | } | |
3557 | ||
3558 | static void | |
3559 | ofputil_put_ofp11_table_stats(const struct ofp12_table_stats *in, | |
3560 | struct ofpbuf *buf) | |
3561 | { | |
3562 | struct ofp11_table_stats *out; | |
3563 | ||
3bdc692b | 3564 | out = ofpbuf_put_zeros(buf, sizeof *out); |
307975da | 3565 | out->table_id = in->table_id; |
3bdc692b | 3566 | ovs_strlcpy(out->name, in->name, sizeof out->name); |
307975da SH |
3567 | out->wildcards = oxm12_to_ofp11_flow_match_fields(in->wildcards); |
3568 | out->match = oxm12_to_ofp11_flow_match_fields(in->match); | |
3569 | out->instructions = in->instructions; | |
3570 | out->write_actions = in->write_actions; | |
3571 | out->apply_actions = in->apply_actions; | |
3572 | out->config = in->config; | |
3573 | out->max_entries = in->max_entries; | |
3574 | out->active_count = in->active_count; | |
3575 | out->lookup_count = in->lookup_count; | |
3576 | out->matched_count = in->matched_count; | |
3577 | } | |
3578 | ||
2e1ae200 JR |
3579 | static void |
3580 | ofputil_put_ofp13_table_stats(const struct ofp12_table_stats *in, | |
3581 | struct ofpbuf *buf) | |
3582 | { | |
3583 | struct ofp13_table_stats *out; | |
3584 | ||
3585 | /* OF 1.3 splits table features off the ofp_table_stats, | |
3586 | * so there is not much here. */ | |
3587 | ||
3588 | out = ofpbuf_put_uninit(buf, sizeof *out); | |
3589 | out->table_id = in->table_id; | |
3590 | out->active_count = in->active_count; | |
3591 | out->lookup_count = in->lookup_count; | |
3592 | out->matched_count = in->matched_count; | |
3593 | } | |
3594 | ||
307975da SH |
3595 | struct ofpbuf * |
3596 | ofputil_encode_table_stats_reply(const struct ofp12_table_stats stats[], int n, | |
3597 | const struct ofp_header *request) | |
3598 | { | |
3599 | struct ofpbuf *reply; | |
3600 | int i; | |
3601 | ||
3602 | reply = ofpraw_alloc_stats_reply(request, n * sizeof *stats); | |
3603 | ||
3604 | switch ((enum ofp_version) request->version) { | |
3605 | case OFP10_VERSION: | |
3606 | for (i = 0; i < n; i++) { | |
3607 | ofputil_put_ofp10_table_stats(&stats[i], reply); | |
3608 | } | |
3609 | break; | |
3610 | ||
3611 | case OFP11_VERSION: | |
3612 | for (i = 0; i < n; i++) { | |
3613 | ofputil_put_ofp11_table_stats(&stats[i], reply); | |
3614 | } | |
3615 | break; | |
3616 | ||
3617 | case OFP12_VERSION: | |
3618 | ofpbuf_put(reply, stats, n * sizeof *stats); | |
3619 | break; | |
3620 | ||
2e1ae200 JR |
3621 | case OFP13_VERSION: |
3622 | for (i = 0; i < n; i++) { | |
3623 | ofputil_put_ofp13_table_stats(&stats[i], reply); | |
3624 | } | |
3625 | break; | |
3626 | ||
307975da SH |
3627 | default: |
3628 | NOT_REACHED(); | |
3629 | } | |
3630 | ||
3631 | return reply; | |
3632 | } | |
3633 | \f | |
2b07c8b1 BP |
3634 | /* ofputil_flow_monitor_request */ |
3635 | ||
3636 | /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract | |
3637 | * ofputil_flow_monitor_request in 'rq'. | |
3638 | * | |
3639 | * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow | |
3640 | * message. Calling this function multiple times for a single 'msg' iterates | |
3641 | * through the requests. The caller must initially leave 'msg''s layer | |
3642 | * pointers null and not modify them between calls. | |
3643 | * | |
3644 | * Returns 0 if successful, EOF if no requests were left in this 'msg', | |
3645 | * otherwise an OFPERR_* value. */ | |
3646 | int | |
3647 | ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq, | |
3648 | struct ofpbuf *msg) | |
3649 | { | |
3650 | struct nx_flow_monitor_request *nfmr; | |
3651 | uint16_t flags; | |
3652 | ||
3653 | if (!msg->l2) { | |
3654 | msg->l2 = msg->data; | |
982697a4 | 3655 | ofpraw_pull_assert(msg); |
2b07c8b1 BP |
3656 | } |
3657 | ||
3658 | if (!msg->size) { | |
3659 | return EOF; | |
3660 | } | |
3661 | ||
3662 | nfmr = ofpbuf_try_pull(msg, sizeof *nfmr); | |
3663 | if (!nfmr) { | |
3664 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %zu " | |
3665 | "leftover bytes at end", msg->size); | |
3666 | return OFPERR_OFPBRC_BAD_LEN; | |
3667 | } | |
3668 | ||
3669 | flags = ntohs(nfmr->flags); | |
3670 | if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY)) | |
3671 | || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE | |
3672 | | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) { | |
3673 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16, | |
3674 | flags); | |
3675 | return OFPERR_NXBRC_FM_BAD_FLAGS; | |
3676 | } | |
3677 | ||
3678 | if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) { | |
3679 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
3680 | } | |
3681 | ||
3682 | rq->id = ntohl(nfmr->id); | |
3683 | rq->flags = flags; | |
3684 | rq->out_port = ntohs(nfmr->out_port); | |
3685 | rq->table_id = nfmr->table_id; | |
3686 | ||
81a76618 | 3687 | return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL); |
2b07c8b1 BP |
3688 | } |
3689 | ||
3690 | void | |
3691 | ofputil_append_flow_monitor_request( | |
3692 | const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg) | |
3693 | { | |
3694 | struct nx_flow_monitor_request *nfmr; | |
3695 | size_t start_ofs; | |
3696 | int match_len; | |
3697 | ||
3698 | if (!msg->size) { | |
982697a4 | 3699 | ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg); |
2b07c8b1 BP |
3700 | } |
3701 | ||
3702 | start_ofs = msg->size; | |
3703 | ofpbuf_put_zeros(msg, sizeof *nfmr); | |
7623f4dd | 3704 | match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0)); |
2b07c8b1 BP |
3705 | |
3706 | nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr); | |
3707 | nfmr->id = htonl(rq->id); | |
3708 | nfmr->flags = htons(rq->flags); | |
3709 | nfmr->out_port = htons(rq->out_port); | |
3710 | nfmr->match_len = htons(match_len); | |
3711 | nfmr->table_id = rq->table_id; | |
3712 | } | |
3713 | ||
3714 | /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg' | |
3715 | * into an abstract ofputil_flow_update in 'update'. The caller must have | |
81a76618 | 3716 | * initialized update->match to point to space allocated for a match. |
2b07c8b1 BP |
3717 | * |
3718 | * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's | |
3719 | * actions (except for NXFME_ABBREV, which never includes actions). The caller | |
3720 | * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts' | |
3721 | * will point into the 'ofpacts' buffer. | |
3722 | * | |
3723 | * Multiple flow updates can be packed into a single OpenFlow message. Calling | |
3724 | * this function multiple times for a single 'msg' iterates through the | |
3725 | * updates. The caller must initially leave 'msg''s layer pointers null and | |
3726 | * not modify them between calls. | |
3727 | * | |
3728 | * Returns 0 if successful, EOF if no updates were left in this 'msg', | |
3729 | * otherwise an OFPERR_* value. */ | |
3730 | int | |
3731 | ofputil_decode_flow_update(struct ofputil_flow_update *update, | |
3732 | struct ofpbuf *msg, struct ofpbuf *ofpacts) | |
3733 | { | |
3734 | struct nx_flow_update_header *nfuh; | |
3735 | unsigned int length; | |
3736 | ||
3737 | if (!msg->l2) { | |
3738 | msg->l2 = msg->data; | |
982697a4 | 3739 | ofpraw_pull_assert(msg); |
2b07c8b1 BP |
3740 | } |
3741 | ||
3742 | if (!msg->size) { | |
3743 | return EOF; | |
3744 | } | |
3745 | ||
3746 | if (msg->size < sizeof(struct nx_flow_update_header)) { | |
3747 | goto bad_len; | |
3748 | } | |
3749 | ||
3750 | nfuh = msg->data; | |
3751 | update->event = ntohs(nfuh->event); | |
3752 | length = ntohs(nfuh->length); | |
3753 | if (length > msg->size || length % 8) { | |
3754 | goto bad_len; | |
3755 | } | |
3756 | ||
3757 | if (update->event == NXFME_ABBREV) { | |
3758 | struct nx_flow_update_abbrev *nfua; | |
3759 | ||
3760 | if (length != sizeof *nfua) { | |
3761 | goto bad_len; | |
3762 | } | |
3763 | ||
3764 | nfua = ofpbuf_pull(msg, sizeof *nfua); | |
3765 | update->xid = nfua->xid; | |
3766 | return 0; | |
3767 | } else if (update->event == NXFME_ADDED | |
3768 | || update->event == NXFME_DELETED | |
3769 | || update->event == NXFME_MODIFIED) { | |
3770 | struct nx_flow_update_full *nfuf; | |
3771 | unsigned int actions_len; | |
3772 | unsigned int match_len; | |
3773 | enum ofperr error; | |
3774 | ||
3775 | if (length < sizeof *nfuf) { | |
3776 | goto bad_len; | |
3777 | } | |
3778 | ||
3779 | nfuf = ofpbuf_pull(msg, sizeof *nfuf); | |
3780 | match_len = ntohs(nfuf->match_len); | |
3781 | if (sizeof *nfuf + match_len > length) { | |
3782 | goto bad_len; | |
3783 | } | |
3784 | ||
3785 | update->reason = ntohs(nfuf->reason); | |
3786 | update->idle_timeout = ntohs(nfuf->idle_timeout); | |
3787 | update->hard_timeout = ntohs(nfuf->hard_timeout); | |
3788 | update->table_id = nfuf->table_id; | |
3789 | update->cookie = nfuf->cookie; | |
81a76618 | 3790 | update->priority = ntohs(nfuf->priority); |
2b07c8b1 | 3791 | |
81a76618 | 3792 | error = nx_pull_match(msg, match_len, update->match, NULL, NULL); |
2b07c8b1 BP |
3793 | if (error) { |
3794 | return error; | |
3795 | } | |
3796 | ||
3797 | actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8); | |
3798 | error = ofpacts_pull_openflow10(msg, actions_len, ofpacts); | |
3799 | if (error) { | |
3800 | return error; | |
3801 | } | |
3802 | ||
3803 | update->ofpacts = ofpacts->data; | |
3804 | update->ofpacts_len = ofpacts->size; | |
3805 | return 0; | |
3806 | } else { | |
3807 | VLOG_WARN_RL(&bad_ofmsg_rl, | |
3808 | "NXST_FLOW_MONITOR reply has bad event %"PRIu16, | |
3809 | ntohs(nfuh->event)); | |
15549878 | 3810 | return OFPERR_NXBRC_FM_BAD_EVENT; |
2b07c8b1 BP |
3811 | } |
3812 | ||
3813 | bad_len: | |
3814 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %zu " | |
3815 | "leftover bytes at end", msg->size); | |
3816 | return OFPERR_OFPBRC_BAD_LEN; | |
3817 | } | |
3818 | ||
3819 | uint32_t | |
3820 | ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh) | |
3821 | { | |
982697a4 BP |
3822 | const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh); |
3823 | ||
3824 | return ntohl(cancel->id); | |
2b07c8b1 | 3825 | } |
9e1fd49b | 3826 | |
2b07c8b1 BP |
3827 | struct ofpbuf * |
3828 | ofputil_encode_flow_monitor_cancel(uint32_t id) | |
3829 | { | |
3830 | struct nx_flow_monitor_cancel *nfmc; | |
3831 | struct ofpbuf *msg; | |
3832 | ||
982697a4 BP |
3833 | msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0); |
3834 | nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc); | |
2b07c8b1 BP |
3835 | nfmc->id = htonl(id); |
3836 | return msg; | |
3837 | } | |
3838 | ||
3839 | void | |
3840 | ofputil_start_flow_update(struct list *replies) | |
3841 | { | |
3842 | struct ofpbuf *msg; | |
3843 | ||
982697a4 BP |
3844 | msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION, |
3845 | htonl(0), 1024); | |
2b07c8b1 BP |
3846 | |
3847 | list_init(replies); | |
3848 | list_push_back(replies, &msg->list_node); | |
3849 | } | |
3850 | ||
3851 | void | |
3852 | ofputil_append_flow_update(const struct ofputil_flow_update *update, | |
3853 | struct list *replies) | |
3854 | { | |
3855 | struct nx_flow_update_header *nfuh; | |
3856 | struct ofpbuf *msg; | |
3857 | size_t start_ofs; | |
3858 | ||
3859 | msg = ofpbuf_from_list(list_back(replies)); | |
3860 | start_ofs = msg->size; | |
3861 | ||
3862 | if (update->event == NXFME_ABBREV) { | |
3863 | struct nx_flow_update_abbrev *nfua; | |
3864 | ||
3865 | nfua = ofpbuf_put_zeros(msg, sizeof *nfua); | |
3866 | nfua->xid = update->xid; | |
3867 | } else { | |
3868 | struct nx_flow_update_full *nfuf; | |
3869 | int match_len; | |
3870 | ||
3871 | ofpbuf_put_zeros(msg, sizeof *nfuf); | |
7623f4dd | 3872 | match_len = nx_put_match(msg, update->match, htonll(0), htonll(0)); |
2b07c8b1 BP |
3873 | ofpacts_put_openflow10(update->ofpacts, update->ofpacts_len, msg); |
3874 | ||
3875 | nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf); | |
3876 | nfuf->reason = htons(update->reason); | |
81a76618 | 3877 | nfuf->priority = htons(update->priority); |
2b07c8b1 BP |
3878 | nfuf->idle_timeout = htons(update->idle_timeout); |
3879 | nfuf->hard_timeout = htons(update->hard_timeout); | |
3880 | nfuf->match_len = htons(match_len); | |
3881 | nfuf->table_id = update->table_id; | |
3882 | nfuf->cookie = update->cookie; | |
3883 | } | |
3884 | ||
3885 | nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh); | |
3886 | nfuh->length = htons(msg->size - start_ofs); | |
3887 | nfuh->event = htons(update->event); | |
3888 | ||
982697a4 | 3889 | ofpmp_postappend(replies, start_ofs); |
2b07c8b1 BP |
3890 | } |
3891 | \f | |
c6a93eb7 | 3892 | struct ofpbuf * |
de0f3156 SH |
3893 | ofputil_encode_packet_out(const struct ofputil_packet_out *po, |
3894 | enum ofputil_protocol protocol) | |
c6a93eb7 | 3895 | { |
de0f3156 | 3896 | enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol); |
c6a93eb7 BP |
3897 | struct ofpbuf *msg; |
3898 | size_t size; | |
3899 | ||
982697a4 | 3900 | size = po->ofpacts_len; |
c6a93eb7 BP |
3901 | if (po->buffer_id == UINT32_MAX) { |
3902 | size += po->packet_len; | |
3903 | } | |
3904 | ||
de0f3156 SH |
3905 | switch (ofp_version) { |
3906 | case OFP10_VERSION: { | |
31a9e63f | 3907 | struct ofp10_packet_out *opo; |
de0f3156 SH |
3908 | size_t actions_ofs; |
3909 | ||
3910 | msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size); | |
3911 | ofpbuf_put_zeros(msg, sizeof *opo); | |
3912 | actions_ofs = msg->size; | |
3913 | ofpacts_put_openflow10(po->ofpacts, po->ofpacts_len, msg); | |
3914 | ||
3915 | opo = msg->l3; | |
3916 | opo->buffer_id = htonl(po->buffer_id); | |
3917 | opo->in_port = htons(po->in_port); | |
3918 | opo->actions_len = htons(msg->size - actions_ofs); | |
3919 | break; | |
3920 | } | |
f25d0cf3 | 3921 | |
de0f3156 | 3922 | case OFP11_VERSION: |
2e1ae200 JR |
3923 | case OFP12_VERSION: |
3924 | case OFP13_VERSION: { | |
7c1b1a0d SH |
3925 | struct ofp11_packet_out *opo; |
3926 | size_t len; | |
3927 | ||
3928 | msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size); | |
3929 | ofpbuf_put_zeros(msg, sizeof *opo); | |
3930 | len = ofpacts_put_openflow11_actions(po->ofpacts, po->ofpacts_len, msg); | |
3931 | ||
3932 | opo = msg->l3; | |
3933 | opo->buffer_id = htonl(po->buffer_id); | |
3934 | opo->in_port = ofputil_port_to_ofp11(po->in_port); | |
3935 | opo->actions_len = htons(len); | |
3936 | break; | |
3937 | } | |
3938 | ||
de0f3156 SH |
3939 | default: |
3940 | NOT_REACHED(); | |
3941 | } | |
f25d0cf3 | 3942 | |
c6a93eb7 BP |
3943 | if (po->buffer_id == UINT32_MAX) { |
3944 | ofpbuf_put(msg, po->packet, po->packet_len); | |
3945 | } | |
f25d0cf3 | 3946 | |
982697a4 | 3947 | ofpmsg_update_length(msg); |
c6a93eb7 BP |
3948 | |
3949 | return msg; | |
3950 | } | |
d1e2cf21 | 3951 | \f |
fa37b408 BP |
3952 | /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */ |
3953 | struct ofpbuf * | |
1a126c0c | 3954 | make_echo_request(enum ofp_version ofp_version) |
fa37b408 | 3955 | { |
1a126c0c | 3956 | return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version, |
982697a4 | 3957 | htonl(0), 0); |
fa37b408 BP |
3958 | } |
3959 | ||
3960 | /* Creates and returns an OFPT_ECHO_REPLY message matching the | |
3961 | * OFPT_ECHO_REQUEST message in 'rq'. */ | |
3962 | struct ofpbuf * | |
3963 | make_echo_reply(const struct ofp_header *rq) | |
3964 | { | |
982697a4 BP |
3965 | struct ofpbuf rq_buf; |
3966 | struct ofpbuf *reply; | |
3967 | ||
3968 | ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length)); | |
3969 | ofpraw_pull_assert(&rq_buf); | |
3970 | ||
3971 | reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, rq_buf.size); | |
3972 | ofpbuf_put(reply, rq_buf.data, rq_buf.size); | |
3973 | return reply; | |
fa37b408 BP |
3974 | } |
3975 | ||
efb80167 | 3976 | struct ofpbuf * |
a0ae0b6e | 3977 | ofputil_encode_barrier_request(enum ofp_version ofp_version) |
efb80167 | 3978 | { |
a0ae0b6e SH |
3979 | enum ofpraw type; |
3980 | ||
3981 | switch (ofp_version) { | |
2e1ae200 | 3982 | case OFP13_VERSION: |
a0ae0b6e SH |
3983 | case OFP12_VERSION: |
3984 | case OFP11_VERSION: | |
3985 | type = OFPRAW_OFPT11_BARRIER_REQUEST; | |
3986 | break; | |
3987 | ||
3988 | case OFP10_VERSION: | |
3989 | type = OFPRAW_OFPT10_BARRIER_REQUEST; | |
3990 | break; | |
3991 | ||
3992 | default: | |
3993 | NOT_REACHED(); | |
3994 | } | |
3995 | ||
3996 | return ofpraw_alloc(type, ofp_version, 0); | |
efb80167 BP |
3997 | } |
3998 | ||
7257b535 BP |
3999 | const char * |
4000 | ofputil_frag_handling_to_string(enum ofp_config_flags flags) | |
4001 | { | |
4002 | switch (flags & OFPC_FRAG_MASK) { | |
4003 | case OFPC_FRAG_NORMAL: return "normal"; | |
4004 | case OFPC_FRAG_DROP: return "drop"; | |
4005 | case OFPC_FRAG_REASM: return "reassemble"; | |
4006 | case OFPC_FRAG_NX_MATCH: return "nx-match"; | |
4007 | } | |
4008 | ||
4009 | NOT_REACHED(); | |
4010 | } | |
4011 | ||
4012 | bool | |
4013 | ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags) | |
4014 | { | |
4015 | if (!strcasecmp(s, "normal")) { | |
4016 | *flags = OFPC_FRAG_NORMAL; | |
4017 | } else if (!strcasecmp(s, "drop")) { | |
4018 | *flags = OFPC_FRAG_DROP; | |
4019 | } else if (!strcasecmp(s, "reassemble")) { | |
4020 | *flags = OFPC_FRAG_REASM; | |
4021 | } else if (!strcasecmp(s, "nx-match")) { | |
4022 | *flags = OFPC_FRAG_NX_MATCH; | |
4023 | } else { | |
4024 | return false; | |
4025 | } | |
4026 | return true; | |
4027 | } | |
4028 | ||
7b7503ea BP |
4029 | /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0 |
4030 | * port number and stores the latter in '*ofp10_port', for the purpose of | |
4031 | * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful, | |
4032 | * otherwise an OFPERR_* number. | |
4033 | * | |
4034 | * See the definition of OFP11_MAX for an explanation of the mapping. */ | |
4035 | enum ofperr | |
4036 | ofputil_port_from_ofp11(ovs_be32 ofp11_port, uint16_t *ofp10_port) | |
4037 | { | |
4038 | uint32_t ofp11_port_h = ntohl(ofp11_port); | |
4039 | ||
4040 | if (ofp11_port_h < OFPP_MAX) { | |
4041 | *ofp10_port = ofp11_port_h; | |
4042 | return 0; | |
4043 | } else if (ofp11_port_h >= OFPP11_MAX) { | |
4044 | *ofp10_port = ofp11_port_h - OFPP11_OFFSET; | |
4045 | return 0; | |
4046 | } else { | |
4047 | VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported " | |
4048 | "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32, | |
4049 | ofp11_port_h, OFPP_MAX - 1, | |
4050 | (uint32_t) OFPP11_MAX, UINT32_MAX); | |
4051 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
4052 | } | |
4053 | } | |
4054 | ||
4055 | /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port | |
4056 | * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages. | |
4057 | * | |
4058 | * See the definition of OFP11_MAX for an explanation of the mapping. */ | |
4059 | ovs_be32 | |
4060 | ofputil_port_to_ofp11(uint16_t ofp10_port) | |
4061 | { | |
4062 | return htonl(ofp10_port < OFPP_MAX | |
4063 | ? ofp10_port | |
4064 | : ofp10_port + OFPP11_OFFSET); | |
4065 | } | |
4066 | ||
08f94c0e | 4067 | /* Checks that 'port' is a valid output port for the OFPAT10_OUTPUT action, given |
c1c9c9c4 | 4068 | * that the switch will never have more than 'max_ports' ports. Returns 0 if |
90bf1e07 BP |
4069 | * 'port' is valid, otherwise an OpenFlow return code. */ |
4070 | enum ofperr | |
77410139 | 4071 | ofputil_check_output_port(uint16_t port, int max_ports) |
fa37b408 BP |
4072 | { |
4073 | switch (port) { | |
4074 | case OFPP_IN_PORT: | |
4075 | case OFPP_TABLE: | |
4076 | case OFPP_NORMAL: | |
4077 | case OFPP_FLOOD: | |
4078 | case OFPP_ALL: | |
4079 | case OFPP_CONTROLLER: | |
0d193212 | 4080 | case OFPP_NONE: |
fa37b408 BP |
4081 | case OFPP_LOCAL: |
4082 | return 0; | |
4083 | ||
4084 | default: | |
c1c9c9c4 | 4085 | if (port < max_ports) { |
fa37b408 BP |
4086 | return 0; |
4087 | } | |
90bf1e07 | 4088 | return OFPERR_OFPBAC_BAD_OUT_PORT; |
fa37b408 BP |
4089 | } |
4090 | } | |
4091 | ||
39dc9082 BP |
4092 | #define OFPUTIL_NAMED_PORTS \ |
4093 | OFPUTIL_NAMED_PORT(IN_PORT) \ | |
4094 | OFPUTIL_NAMED_PORT(TABLE) \ | |
4095 | OFPUTIL_NAMED_PORT(NORMAL) \ | |
4096 | OFPUTIL_NAMED_PORT(FLOOD) \ | |
4097 | OFPUTIL_NAMED_PORT(ALL) \ | |
4098 | OFPUTIL_NAMED_PORT(CONTROLLER) \ | |
4099 | OFPUTIL_NAMED_PORT(LOCAL) \ | |
7f05e7ab JR |
4100 | OFPUTIL_NAMED_PORT(ANY) |
4101 | ||
4102 | /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */ | |
4103 | #define OFPUTIL_NAMED_PORTS_WITH_NONE \ | |
4104 | OFPUTIL_NAMED_PORTS \ | |
39dc9082 BP |
4105 | OFPUTIL_NAMED_PORT(NONE) |
4106 | ||
8010100b BP |
4107 | /* Stores the port number represented by 's' into '*portp'. 's' may be an |
4108 | * integer or, for reserved ports, the standard OpenFlow name for the port | |
4109 | * (e.g. "LOCAL"). | |
c6100d92 | 4110 | * |
8010100b BP |
4111 | * Returns true if successful, false if 's' is not a valid OpenFlow port number |
4112 | * or name. The caller should issue an error message in this case, because | |
4113 | * this function usually does not. (This gives the caller an opportunity to | |
4114 | * look up the port name another way, e.g. by contacting the switch and listing | |
4115 | * the names of all its ports). | |
c6100d92 BP |
4116 | * |
4117 | * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset | |
4118 | * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit | |
4119 | * range as described in include/openflow/openflow-1.1.h. */ | |
8010100b BP |
4120 | bool |
4121 | ofputil_port_from_string(const char *s, uint16_t *portp) | |
39dc9082 | 4122 | { |
c6100d92 BP |
4123 | unsigned int port32; |
4124 | ||
8010100b | 4125 | *portp = 0; |
c6100d92 | 4126 | if (str_to_uint(s, 10, &port32)) { |
e3432ee9 | 4127 | if (port32 < OFPP_MAX) { |
8010100b BP |
4128 | *portp = port32; |
4129 | return true; | |
c6100d92 BP |
4130 | } else if (port32 < OFPP_FIRST_RESV) { |
4131 | VLOG_WARN("port %u is a reserved OF1.0 port number that will " | |
4132 | "be translated to %u when talking to an OF1.1 or " | |
4133 | "later controller", port32, port32 + OFPP11_OFFSET); | |
8010100b BP |
4134 | *portp = port32; |
4135 | return true; | |
c6100d92 | 4136 | } else if (port32 <= OFPP_LAST_RESV) { |
a6b112a8 | 4137 | struct ds msg; |
c6100d92 | 4138 | |
a6b112a8 BP |
4139 | ds_init(&msg); |
4140 | ofputil_format_port(port32, &msg); | |
fd38af85 BP |
4141 | VLOG_WARN_ONCE("referring to port %s as %u is deprecated for " |
4142 | "compatibility with future versions of OpenFlow", | |
a6b112a8 BP |
4143 | ds_cstr(&msg), port32); |
4144 | ds_destroy(&msg); | |
c6100d92 | 4145 | |
8010100b BP |
4146 | *portp = port32; |
4147 | return true; | |
c6100d92 BP |
4148 | } else if (port32 < OFPP11_MAX) { |
4149 | VLOG_WARN("port %u is outside the supported range 0 through " | |
d047fd17 | 4150 | "%"PRIx16" or 0x%x through 0x%"PRIx32, port32, |
c6100d92 | 4151 | UINT16_MAX, (unsigned int) OFPP11_MAX, UINT32_MAX); |
8010100b | 4152 | return false; |
c6100d92 | 4153 | } else { |
8010100b BP |
4154 | *portp = port32 - OFPP11_OFFSET; |
4155 | return true; | |
c6100d92 BP |
4156 | } |
4157 | } else { | |
4158 | struct pair { | |
4159 | const char *name; | |
4160 | uint16_t value; | |
4161 | }; | |
4162 | static const struct pair pairs[] = { | |
39dc9082 | 4163 | #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME}, |
7f05e7ab | 4164 | OFPUTIL_NAMED_PORTS_WITH_NONE |
39dc9082 | 4165 | #undef OFPUTIL_NAMED_PORT |
c6100d92 BP |
4166 | }; |
4167 | const struct pair *p; | |
39dc9082 | 4168 | |
c6100d92 BP |
4169 | for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) { |
4170 | if (!strcasecmp(s, p->name)) { | |
8010100b BP |
4171 | *portp = p->value; |
4172 | return true; | |
c6100d92 | 4173 | } |
39dc9082 | 4174 | } |
8010100b | 4175 | return false; |
39dc9082 | 4176 | } |
39dc9082 BP |
4177 | } |
4178 | ||
4179 | /* Appends to 's' a string representation of the OpenFlow port number 'port'. | |
4180 | * Most ports' string representation is just the port number, but for special | |
4181 | * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */ | |
4182 | void | |
4183 | ofputil_format_port(uint16_t port, struct ds *s) | |
4184 | { | |
4185 | const char *name; | |
4186 | ||
4187 | switch (port) { | |
4188 | #define OFPUTIL_NAMED_PORT(NAME) case OFPP_##NAME: name = #NAME; break; | |
4189 | OFPUTIL_NAMED_PORTS | |
4190 | #undef OFPUTIL_NAMED_PORT | |
4191 | ||
4192 | default: | |
4193 | ds_put_format(s, "%"PRIu16, port); | |
4194 | return; | |
4195 | } | |
4196 | ds_put_cstr(s, name); | |
4197 | } | |
4198 | ||
2be393ed JP |
4199 | /* Given a buffer 'b' that contains an array of OpenFlow ports of type |
4200 | * 'ofp_version', tries to pull the first element from the array. If | |
4201 | * successful, initializes '*pp' with an abstract representation of the | |
4202 | * port and returns 0. If no ports remain to be decoded, returns EOF. | |
4203 | * On an error, returns a positive OFPERR_* value. */ | |
4204 | int | |
2e3fa633 | 4205 | ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b, |
2be393ed JP |
4206 | struct ofputil_phy_port *pp) |
4207 | { | |
2e3fa633 SH |
4208 | switch (ofp_version) { |
4209 | case OFP10_VERSION: { | |
2be393ed JP |
4210 | const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp); |
4211 | return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF; | |
2e3fa633 SH |
4212 | } |
4213 | case OFP11_VERSION: | |
2e1ae200 JR |
4214 | case OFP12_VERSION: |
4215 | case OFP13_VERSION: { | |
2be393ed JP |
4216 | const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op); |
4217 | return op ? ofputil_decode_ofp11_port(pp, op) : EOF; | |
4218 | } | |
2e3fa633 SH |
4219 | default: |
4220 | NOT_REACHED(); | |
4221 | } | |
2be393ed JP |
4222 | } |
4223 | ||
4224 | /* Given a buffer 'b' that contains an array of OpenFlow ports of type | |
4225 | * 'ofp_version', returns the number of elements. */ | |
4226 | size_t ofputil_count_phy_ports(uint8_t ofp_version, struct ofpbuf *b) | |
4227 | { | |
5b5a3a67 | 4228 | return b->size / ofputil_get_phy_port_size(ofp_version); |
2be393ed JP |
4229 | } |
4230 | ||
e23ae585 | 4231 | /* Returns the 'enum ofputil_action_code' corresponding to 'name' (e.g. if |
08f94c0e | 4232 | * 'name' is "output" then the return value is OFPUTIL_OFPAT10_OUTPUT), or -1 if |
e23ae585 BP |
4233 | * 'name' is not the name of any action. |
4234 | * | |
4235 | * ofp-util.def lists the mapping from names to action. */ | |
4236 | int | |
4237 | ofputil_action_code_from_name(const char *name) | |
4238 | { | |
a00d4bd0 | 4239 | static const char *const names[OFPUTIL_N_ACTIONS] = { |
690a61c5 | 4240 | NULL, |
3ddcaf2d BP |
4241 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) NAME, |
4242 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME, | |
4243 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME, | |
e23ae585 BP |
4244 | #include "ofp-util.def" |
4245 | }; | |
4246 | ||
a00d4bd0 | 4247 | const char *const *p; |
e23ae585 BP |
4248 | |
4249 | for (p = names; p < &names[ARRAY_SIZE(names)]; p++) { | |
4250 | if (*p && !strcasecmp(name, *p)) { | |
4251 | return p - names; | |
4252 | } | |
4253 | } | |
4254 | return -1; | |
4255 | } | |
4256 | ||
93996add BP |
4257 | /* Appends an action of the type specified by 'code' to 'buf' and returns the |
4258 | * action. Initializes the parts of 'action' that identify it as having type | |
4259 | * <ENUM> and length 'sizeof *action' and zeros the rest. For actions that | |
4260 | * have variable length, the length used and cleared is that of struct | |
4261 | * <STRUCT>. */ | |
4262 | void * | |
4263 | ofputil_put_action(enum ofputil_action_code code, struct ofpbuf *buf) | |
4264 | { | |
4265 | switch (code) { | |
690a61c5 BP |
4266 | case OFPUTIL_ACTION_INVALID: |
4267 | NOT_REACHED(); | |
4268 | ||
3ddcaf2d BP |
4269 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \ |
4270 | case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf); | |
4271 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
93996add BP |
4272 | case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf); |
4273 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
4274 | case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf); | |
4275 | #include "ofp-util.def" | |
4276 | } | |
4277 | NOT_REACHED(); | |
4278 | } | |
4279 | ||
08f94c0e | 4280 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \ |
93996add BP |
4281 | void \ |
4282 | ofputil_init_##ENUM(struct STRUCT *s) \ | |
4283 | { \ | |
4284 | memset(s, 0, sizeof *s); \ | |
4285 | s->type = htons(ENUM); \ | |
4286 | s->len = htons(sizeof *s); \ | |
4287 | } \ | |
4288 | \ | |
4289 | struct STRUCT * \ | |
4290 | ofputil_put_##ENUM(struct ofpbuf *buf) \ | |
4291 | { \ | |
4292 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
4293 | ofputil_init_##ENUM(s); \ | |
4294 | return s; \ | |
4295 | } | |
3ddcaf2d BP |
4296 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
4297 | OFPAT10_ACTION(ENUM, STRUCT, NAME) | |
93996add BP |
4298 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
4299 | void \ | |
4300 | ofputil_init_##ENUM(struct STRUCT *s) \ | |
4301 | { \ | |
4302 | memset(s, 0, sizeof *s); \ | |
08f94c0e | 4303 | s->type = htons(OFPAT10_VENDOR); \ |
93996add BP |
4304 | s->len = htons(sizeof *s); \ |
4305 | s->vendor = htonl(NX_VENDOR_ID); \ | |
4306 | s->subtype = htons(ENUM); \ | |
4307 | } \ | |
4308 | \ | |
4309 | struct STRUCT * \ | |
4310 | ofputil_put_##ENUM(struct ofpbuf *buf) \ | |
4311 | { \ | |
4312 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
4313 | ofputil_init_##ENUM(s); \ | |
4314 | return s; \ | |
4315 | } | |
4316 | #include "ofp-util.def" | |
4317 | ||
3cbd9931 | 4318 | static void |
81a76618 | 4319 | ofputil_normalize_match__(struct match *match, bool may_log) |
b459a924 BP |
4320 | { |
4321 | enum { | |
4322 | MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */ | |
4323 | MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */ | |
4324 | MAY_NW_PROTO = 1 << 2, /* nw_proto */ | |
a61680c6 | 4325 | MAY_IPVx = 1 << 3, /* tos, frag, ttl */ |
b459a924 BP |
4326 | MAY_ARP_SHA = 1 << 4, /* arp_sha */ |
4327 | MAY_ARP_THA = 1 << 5, /* arp_tha */ | |
d78477ec | 4328 | MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */ |
b02475c5 SH |
4329 | MAY_ND_TARGET = 1 << 7, /* nd_target */ |
4330 | MAY_MPLS = 1 << 8, /* mpls label and tc */ | |
b459a924 BP |
4331 | } may_match; |
4332 | ||
4333 | struct flow_wildcards wc; | |
4334 | ||
4335 | /* Figure out what fields may be matched. */ | |
81a76618 | 4336 | if (match->flow.dl_type == htons(ETH_TYPE_IP)) { |
9e44d715 | 4337 | may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR; |
81a76618 BP |
4338 | if (match->flow.nw_proto == IPPROTO_TCP || |
4339 | match->flow.nw_proto == IPPROTO_UDP || | |
4340 | match->flow.nw_proto == IPPROTO_ICMP) { | |
b459a924 BP |
4341 | may_match |= MAY_TP_ADDR; |
4342 | } | |
81a76618 | 4343 | } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) { |
d78477ec | 4344 | may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6; |
81a76618 BP |
4345 | if (match->flow.nw_proto == IPPROTO_TCP || |
4346 | match->flow.nw_proto == IPPROTO_UDP) { | |
b459a924 | 4347 | may_match |= MAY_TP_ADDR; |
81a76618 | 4348 | } else if (match->flow.nw_proto == IPPROTO_ICMPV6) { |
b459a924 | 4349 | may_match |= MAY_TP_ADDR; |
81a76618 | 4350 | if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) { |
b459a924 | 4351 | may_match |= MAY_ND_TARGET | MAY_ARP_SHA; |
81a76618 | 4352 | } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) { |
b459a924 BP |
4353 | may_match |= MAY_ND_TARGET | MAY_ARP_THA; |
4354 | } | |
4355 | } | |
8087f5ff MM |
4356 | } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) || |
4357 | match->flow.dl_type == htons(ETH_TYPE_RARP)) { | |
27527aa0 | 4358 | may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA; |
b02475c5 SH |
4359 | } else if (eth_type_mpls(match->flow.dl_type)) { |
4360 | may_match = MAY_MPLS; | |
1c0b7503 | 4361 | } else { |
b459a924 BP |
4362 | may_match = 0; |
4363 | } | |
4364 | ||
4365 | /* Clear the fields that may not be matched. */ | |
81a76618 | 4366 | wc = match->wc; |
b459a924 | 4367 | if (!(may_match & MAY_NW_ADDR)) { |
26720e24 | 4368 | wc.masks.nw_src = wc.masks.nw_dst = htonl(0); |
b459a924 BP |
4369 | } |
4370 | if (!(may_match & MAY_TP_ADDR)) { | |
26720e24 | 4371 | wc.masks.tp_src = wc.masks.tp_dst = htons(0); |
b459a924 BP |
4372 | } |
4373 | if (!(may_match & MAY_NW_PROTO)) { | |
26720e24 | 4374 | wc.masks.nw_proto = 0; |
b459a924 | 4375 | } |
9e44d715 | 4376 | if (!(may_match & MAY_IPVx)) { |
26720e24 BP |
4377 | wc.masks.nw_tos = 0; |
4378 | wc.masks.nw_ttl = 0; | |
b459a924 BP |
4379 | } |
4380 | if (!(may_match & MAY_ARP_SHA)) { | |
26720e24 | 4381 | memset(wc.masks.arp_sha, 0, ETH_ADDR_LEN); |
b459a924 BP |
4382 | } |
4383 | if (!(may_match & MAY_ARP_THA)) { | |
26720e24 | 4384 | memset(wc.masks.arp_tha, 0, ETH_ADDR_LEN); |
b459a924 | 4385 | } |
d78477ec | 4386 | if (!(may_match & MAY_IPV6)) { |
26720e24 BP |
4387 | wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any; |
4388 | wc.masks.ipv6_label = htonl(0); | |
b459a924 BP |
4389 | } |
4390 | if (!(may_match & MAY_ND_TARGET)) { | |
26720e24 | 4391 | wc.masks.nd_target = in6addr_any; |
b459a924 | 4392 | } |
b02475c5 SH |
4393 | if (!(may_match & MAY_MPLS)) { |
4394 | wc.masks.mpls_lse = htonl(0); | |
4395 | wc.masks.mpls_depth = 0; | |
4396 | } | |
b459a924 BP |
4397 | |
4398 | /* Log any changes. */ | |
81a76618 | 4399 | if (!flow_wildcards_equal(&wc, &match->wc)) { |
3cbd9931 | 4400 | bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl); |
81a76618 | 4401 | char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL; |
b459a924 | 4402 | |
81a76618 BP |
4403 | match->wc = wc; |
4404 | match_zero_wildcarded_fields(match); | |
b459a924 BP |
4405 | |
4406 | if (log) { | |
81a76618 | 4407 | char *post = match_to_string(match, OFP_DEFAULT_PRIORITY); |
b459a924 BP |
4408 | VLOG_INFO("normalization changed ofp_match, details:"); |
4409 | VLOG_INFO(" pre: %s", pre); | |
4410 | VLOG_INFO("post: %s", post); | |
4411 | free(pre); | |
4412 | free(post); | |
4413 | } | |
fa37b408 | 4414 | } |
3f09c339 | 4415 | } |
26c112c2 | 4416 | |
81a76618 | 4417 | /* "Normalizes" the wildcards in 'match'. That means: |
3cbd9931 BP |
4418 | * |
4419 | * 1. If the type of level N is known, then only the valid fields for that | |
4420 | * level may be specified. For example, ARP does not have a TOS field, | |
81a76618 | 4421 | * so nw_tos must be wildcarded if 'match' specifies an ARP flow. |
3cbd9931 | 4422 | * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and |
81a76618 | 4423 | * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an |
3cbd9931 BP |
4424 | * IPv4 flow. |
4425 | * | |
4426 | * 2. If the type of level N is not known (or not understood by Open | |
4427 | * vSwitch), then no fields at all for that level may be specified. For | |
4428 | * example, Open vSwitch does not understand SCTP, an L4 protocol, so the | |
81a76618 | 4429 | * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an |
3cbd9931 BP |
4430 | * SCTP flow. |
4431 | * | |
81a76618 | 4432 | * If this function changes 'match', it logs a rate-limited informational |
3cbd9931 BP |
4433 | * message. */ |
4434 | void | |
81a76618 | 4435 | ofputil_normalize_match(struct match *match) |
3cbd9931 | 4436 | { |
81a76618 | 4437 | ofputil_normalize_match__(match, true); |
3cbd9931 BP |
4438 | } |
4439 | ||
81a76618 BP |
4440 | /* Same as ofputil_normalize_match() without the logging. Thus, this function |
4441 | * is suitable for a program's internal use, whereas ofputil_normalize_match() | |
3cbd9931 BP |
4442 | * sense for use on flows received from elsewhere (so that a bug in the program |
4443 | * that sent them can be reported and corrected). */ | |
4444 | void | |
81a76618 | 4445 | ofputil_normalize_match_quiet(struct match *match) |
3cbd9931 | 4446 | { |
81a76618 | 4447 | ofputil_normalize_match__(match, false); |
3cbd9931 BP |
4448 | } |
4449 | ||
0ff22822 BP |
4450 | /* Parses a key or a key-value pair from '*stringp'. |
4451 | * | |
4452 | * On success: Stores the key into '*keyp'. Stores the value, if present, into | |
4453 | * '*valuep', otherwise an empty string. Advances '*stringp' past the end of | |
4454 | * the key-value pair, preparing it for another call. '*keyp' and '*valuep' | |
4455 | * are substrings of '*stringp' created by replacing some of its bytes by null | |
4456 | * terminators. Returns true. | |
4457 | * | |
4458 | * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to | |
4459 | * NULL and returns false. */ | |
4460 | bool | |
4461 | ofputil_parse_key_value(char **stringp, char **keyp, char **valuep) | |
4462 | { | |
4463 | char *pos, *key, *value; | |
4464 | size_t key_len; | |
4465 | ||
4466 | pos = *stringp; | |
4467 | pos += strspn(pos, ", \t\r\n"); | |
4468 | if (*pos == '\0') { | |
4469 | *keyp = *valuep = NULL; | |
4470 | return false; | |
4471 | } | |
4472 | ||
4473 | key = pos; | |
4474 | key_len = strcspn(pos, ":=(, \t\r\n"); | |
4475 | if (key[key_len] == ':' || key[key_len] == '=') { | |
4476 | /* The value can be separated by a colon. */ | |
4477 | size_t value_len; | |
4478 | ||
4479 | value = key + key_len + 1; | |
4480 | value_len = strcspn(value, ", \t\r\n"); | |
4481 | pos = value + value_len + (value[value_len] != '\0'); | |
4482 | value[value_len] = '\0'; | |
4483 | } else if (key[key_len] == '(') { | |
4484 | /* The value can be surrounded by balanced parentheses. The outermost | |
4485 | * set of parentheses is removed. */ | |
4486 | int level = 1; | |
4487 | size_t value_len; | |
4488 | ||
4489 | value = key + key_len + 1; | |
4490 | for (value_len = 0; level > 0; value_len++) { | |
4491 | switch (value[value_len]) { | |
4492 | case '\0': | |
33cadc50 BP |
4493 | level = 0; |
4494 | break; | |
0ff22822 BP |
4495 | |
4496 | case '(': | |
4497 | level++; | |
4498 | break; | |
4499 | ||
4500 | case ')': | |
4501 | level--; | |
4502 | break; | |
4503 | } | |
4504 | } | |
4505 | value[value_len - 1] = '\0'; | |
4506 | pos = value + value_len; | |
4507 | } else { | |
4508 | /* There might be no value at all. */ | |
4509 | value = key + key_len; /* Will become the empty string below. */ | |
4510 | pos = key + key_len + (key[key_len] != '\0'); | |
4511 | } | |
4512 | key[key_len] = '\0'; | |
4513 | ||
4514 | *stringp = pos; | |
4515 | *keyp = key; | |
4516 | *valuep = value; | |
4517 | return true; | |
4518 | } | |
f8e4867e SH |
4519 | |
4520 | /* Encode a dump ports request for 'port', the encoded message | |
2e1ae200 | 4521 | * will be for Open Flow version 'ofp_version'. Returns message |
f8e4867e SH |
4522 | * as a struct ofpbuf. Returns encoded message on success, NULL on error */ |
4523 | struct ofpbuf * | |
e94f17a7 | 4524 | ofputil_encode_dump_ports_request(enum ofp_version ofp_version, uint16_t port) |
f8e4867e SH |
4525 | { |
4526 | struct ofpbuf *request; | |
4527 | ||
4528 | switch (ofp_version) { | |
4529 | case OFP10_VERSION: { | |
4530 | struct ofp10_port_stats_request *req; | |
4531 | request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0); | |
4532 | req = ofpbuf_put_zeros(request, sizeof *req); | |
4533 | req->port_no = htons(port); | |
4534 | break; | |
4535 | } | |
4536 | case OFP11_VERSION: | |
2e1ae200 JR |
4537 | case OFP12_VERSION: |
4538 | case OFP13_VERSION: { | |
f8e4867e SH |
4539 | struct ofp11_port_stats_request *req; |
4540 | request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0); | |
4541 | req = ofpbuf_put_zeros(request, sizeof *req); | |
4542 | req->port_no = ofputil_port_to_ofp11(port); | |
4543 | break; | |
4544 | } | |
4545 | default: | |
4546 | NOT_REACHED(); | |
4547 | } | |
4548 | ||
4549 | return request; | |
4550 | } | |
4551 | ||
4552 | static void | |
4553 | ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops, | |
4554 | struct ofp10_port_stats *ps10) | |
4555 | { | |
4556 | ps10->port_no = htons(ops->port_no); | |
4557 | memset(ps10->pad, 0, sizeof ps10->pad); | |
4558 | put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets)); | |
4559 | put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets)); | |
4560 | put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes)); | |
4561 | put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes)); | |
4562 | put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped)); | |
4563 | put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped)); | |
4564 | put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors)); | |
4565 | put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors)); | |
4566 | put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors)); | |
4567 | put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors)); | |
4568 | put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors)); | |
4569 | put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions)); | |
4570 | } | |
4571 | ||
4572 | static void | |
4573 | ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops, | |
4574 | struct ofp11_port_stats *ps11) | |
4575 | { | |
4576 | ps11->port_no = ofputil_port_to_ofp11(ops->port_no); | |
4577 | memset(ps11->pad, 0, sizeof ps11->pad); | |
4578 | ps11->rx_packets = htonll(ops->stats.rx_packets); | |
4579 | ps11->tx_packets = htonll(ops->stats.tx_packets); | |
4580 | ps11->rx_bytes = htonll(ops->stats.rx_bytes); | |
4581 | ps11->tx_bytes = htonll(ops->stats.tx_bytes); | |
4582 | ps11->rx_dropped = htonll(ops->stats.rx_dropped); | |
4583 | ps11->tx_dropped = htonll(ops->stats.tx_dropped); | |
4584 | ps11->rx_errors = htonll(ops->stats.rx_errors); | |
4585 | ps11->tx_errors = htonll(ops->stats.tx_errors); | |
4586 | ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors); | |
4587 | ps11->rx_over_err = htonll(ops->stats.rx_over_errors); | |
4588 | ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors); | |
4589 | ps11->collisions = htonll(ops->stats.collisions); | |
4590 | } | |
4591 | ||
2e1ae200 JR |
4592 | static void |
4593 | ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops, | |
4594 | struct ofp13_port_stats *ps13) | |
4595 | { | |
4596 | ofputil_port_stats_to_ofp11(ops, &ps13->ps); | |
4597 | ||
4598 | /* OF 1.3 adds duration fields */ | |
4599 | /* FIXME: Need to implement port alive duration (sec + nsec) */ | |
4600 | ps13->duration_sec = htonl(~0); | |
4601 | ps13->duration_nsec = htonl(~0); | |
4602 | } | |
4603 | ||
4604 | ||
ad4c35fe | 4605 | /* Encode a ports stat for 'ops' and append it to 'replies'. */ |
f8e4867e SH |
4606 | void |
4607 | ofputil_append_port_stat(struct list *replies, | |
4608 | const struct ofputil_port_stats *ops) | |
4609 | { | |
4610 | struct ofpbuf *msg = ofpbuf_from_list(list_back(replies)); | |
4611 | struct ofp_header *oh = msg->data; | |
4612 | ||
4613 | switch ((enum ofp_version)oh->version) { | |
2e1ae200 JR |
4614 | case OFP13_VERSION: { |
4615 | struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply); | |
4616 | ofputil_port_stats_to_ofp13(ops, reply); | |
4617 | break; | |
4618 | } | |
f8e4867e SH |
4619 | case OFP12_VERSION: |
4620 | case OFP11_VERSION: { | |
4621 | struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply); | |
4622 | ofputil_port_stats_to_ofp11(ops, reply); | |
4623 | break; | |
4624 | } | |
4625 | ||
4626 | case OFP10_VERSION: { | |
4627 | struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply); | |
4628 | ofputil_port_stats_to_ofp10(ops, reply); | |
4629 | break; | |
4630 | } | |
4631 | ||
4632 | default: | |
4633 | NOT_REACHED(); | |
4634 | } | |
4635 | } | |
4636 | ||
4637 | static enum ofperr | |
4638 | ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops, | |
4639 | const struct ofp10_port_stats *ps10) | |
4640 | { | |
4641 | memset(ops, 0, sizeof *ops); | |
4642 | ||
4643 | ops->port_no = ntohs(ps10->port_no); | |
4644 | ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets)); | |
4645 | ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets)); | |
4646 | ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes)); | |
4647 | ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes)); | |
4648 | ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped)); | |
4649 | ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped)); | |
4650 | ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors)); | |
4651 | ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors)); | |
4652 | ops->stats.rx_frame_errors = | |
4653 | ntohll(get_32aligned_be64(&ps10->rx_frame_err)); | |
4654 | ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err)); | |
4655 | ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err)); | |
4656 | ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions)); | |
4657 | ||
4658 | return 0; | |
4659 | } | |
4660 | ||
4661 | static enum ofperr | |
4662 | ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops, | |
4663 | const struct ofp11_port_stats *ps11) | |
4664 | { | |
4665 | enum ofperr error; | |
4666 | ||
4667 | memset(ops, 0, sizeof *ops); | |
4668 | error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no); | |
4669 | if (error) { | |
4670 | return error; | |
4671 | } | |
4672 | ||
4673 | ops->stats.rx_packets = ntohll(ps11->rx_packets); | |
4674 | ops->stats.tx_packets = ntohll(ps11->tx_packets); | |
4675 | ops->stats.rx_bytes = ntohll(ps11->rx_bytes); | |
4676 | ops->stats.tx_bytes = ntohll(ps11->tx_bytes); | |
4677 | ops->stats.rx_dropped = ntohll(ps11->rx_dropped); | |
4678 | ops->stats.tx_dropped = ntohll(ps11->tx_dropped); | |
4679 | ops->stats.rx_errors = ntohll(ps11->rx_errors); | |
4680 | ops->stats.tx_errors = ntohll(ps11->tx_errors); | |
4681 | ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err); | |
4682 | ops->stats.rx_over_errors = ntohll(ps11->rx_over_err); | |
4683 | ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err); | |
4684 | ops->stats.collisions = ntohll(ps11->collisions); | |
4685 | ||
4686 | return 0; | |
4687 | } | |
4688 | ||
2e1ae200 JR |
4689 | static enum ofperr |
4690 | ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops, | |
4691 | const struct ofp13_port_stats *ps13) | |
4692 | { | |
4693 | enum ofperr error = | |
4694 | ofputil_port_stats_from_ofp11(ops, &ps13->ps); | |
4695 | if (!error) { | |
4696 | /* FIXME: Get ps13->duration_sec and ps13->duration_nsec, | |
4697 | * Add to netdev_stats? */ | |
4698 | } | |
4699 | ||
4700 | return error; | |
4701 | } | |
4702 | ||
4703 | ||
f8e4867e SH |
4704 | /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY |
4705 | * message 'oh'. */ | |
4706 | size_t | |
4707 | ofputil_count_port_stats(const struct ofp_header *oh) | |
4708 | { | |
4709 | struct ofpbuf b; | |
4710 | ||
4711 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); | |
4712 | ofpraw_pull_assert(&b); | |
4713 | ||
4714 | BUILD_ASSERT(sizeof(struct ofp10_port_stats) == | |
4715 | sizeof(struct ofp11_port_stats)); | |
4716 | return b.size / sizeof(struct ofp10_port_stats); | |
4717 | } | |
4718 | ||
4719 | /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract | |
4720 | * ofputil_port_stats in 'ps'. | |
4721 | * | |
4722 | * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow | |
4723 | * message. Calling this function multiple times for a single 'msg' iterates | |
4724 | * through the replies. The caller must initially leave 'msg''s layer pointers | |
4725 | * null and not modify them between calls. | |
4726 | * | |
4727 | * Returns 0 if successful, EOF if no replies were left in this 'msg', | |
4728 | * otherwise a positive errno value. */ | |
4729 | int | |
4730 | ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg) | |
4731 | { | |
4732 | enum ofperr error; | |
4733 | enum ofpraw raw; | |
4734 | ||
4735 | error = (msg->l2 | |
4736 | ? ofpraw_decode(&raw, msg->l2) | |
4737 | : ofpraw_pull(&raw, msg)); | |
4738 | if (error) { | |
4739 | return error; | |
4740 | } | |
4741 | ||
4742 | if (!msg->size) { | |
4743 | return EOF; | |
2e1ae200 JR |
4744 | } else if (raw == OFPRAW_OFPST13_PORT_REPLY) { |
4745 | const struct ofp13_port_stats *ps13; | |
4746 | ||
4747 | ps13 = ofpbuf_try_pull(msg, sizeof *ps13); | |
4748 | if (!ps13) { | |
4749 | goto bad_len; | |
4750 | } | |
4751 | return ofputil_port_stats_from_ofp13(ps, ps13); | |
f8e4867e SH |
4752 | } else if (raw == OFPRAW_OFPST11_PORT_REPLY) { |
4753 | const struct ofp11_port_stats *ps11; | |
4754 | ||
4755 | ps11 = ofpbuf_try_pull(msg, sizeof *ps11); | |
4756 | if (!ps11) { | |
2e1ae200 | 4757 | goto bad_len; |
f8e4867e SH |
4758 | } |
4759 | return ofputil_port_stats_from_ofp11(ps, ps11); | |
4760 | } else if (raw == OFPRAW_OFPST10_PORT_REPLY) { | |
4761 | const struct ofp10_port_stats *ps10; | |
4762 | ||
4763 | ps10 = ofpbuf_try_pull(msg, sizeof *ps10); | |
4764 | if (!ps10) { | |
2e1ae200 | 4765 | goto bad_len; |
f8e4867e SH |
4766 | } |
4767 | return ofputil_port_stats_from_ofp10(ps, ps10); | |
4768 | } else { | |
4769 | NOT_REACHED(); | |
4770 | } | |
4771 | ||
2e1ae200 JR |
4772 | bad_len: |
4773 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %zu leftover " | |
4774 | "bytes at end", msg->size); | |
4775 | return OFPERR_OFPBRC_BAD_LEN; | |
f8e4867e SH |
4776 | } |
4777 | ||
4778 | /* Parse a port status request message into a 16 bit OpenFlow 1.0 | |
4779 | * port number and stores the latter in '*ofp10_port'. | |
4780 | * Returns 0 if successful, otherwise an OFPERR_* number. */ | |
4781 | enum ofperr | |
4782 | ofputil_decode_port_stats_request(const struct ofp_header *request, | |
4783 | uint16_t *ofp10_port) | |
4784 | { | |
4785 | switch ((enum ofp_version)request->version) { | |
2e1ae200 | 4786 | case OFP13_VERSION: |
f8e4867e SH |
4787 | case OFP12_VERSION: |
4788 | case OFP11_VERSION: { | |
4789 | const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request); | |
4790 | return ofputil_port_from_ofp11(psr11->port_no, ofp10_port); | |
4791 | } | |
4792 | ||
4793 | case OFP10_VERSION: { | |
4794 | const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request); | |
4795 | *ofp10_port = ntohs(psr10->port_no); | |
4796 | return 0; | |
4797 | } | |
4798 | ||
4799 | default: | |
4800 | NOT_REACHED(); | |
4801 | } | |
4802 | } | |
64626975 SH |
4803 | |
4804 | /* Parse a queue status request message into 'oqsr'. | |
4805 | * Returns 0 if successful, otherwise an OFPERR_* number. */ | |
4806 | enum ofperr | |
4807 | ofputil_decode_queue_stats_request(const struct ofp_header *request, | |
4808 | struct ofputil_queue_stats_request *oqsr) | |
4809 | { | |
4810 | switch ((enum ofp_version)request->version) { | |
2e1ae200 | 4811 | case OFP13_VERSION: |
64626975 SH |
4812 | case OFP12_VERSION: |
4813 | case OFP11_VERSION: { | |
4814 | const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request); | |
4815 | oqsr->queue_id = ntohl(qsr11->queue_id); | |
4816 | return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no); | |
4817 | } | |
4818 | ||
4819 | case OFP10_VERSION: { | |
7f05e7ab JR |
4820 | const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request); |
4821 | oqsr->queue_id = ntohl(qsr10->queue_id); | |
4822 | oqsr->port_no = ntohs(qsr10->port_no); | |
4823 | /* OF 1.0 uses OFPP_ALL for OFPP_ANY */ | |
4824 | if (oqsr->port_no == OFPP_ALL) { | |
4825 | oqsr->port_no = OFPP_ANY; | |
4826 | } | |
64626975 SH |
4827 | return 0; |
4828 | } | |
4829 | ||
4830 | default: | |
4831 | NOT_REACHED(); | |
4832 | } | |
4833 | } | |
4834 | ||
4835 | /* Encode a queue statsrequest for 'oqsr', the encoded message | |
4836 | * will be fore Open Flow version 'ofp_version'. Returns message | |
4837 | * as a struct ofpbuf. Returns encoded message on success, NULL on error */ | |
4838 | struct ofpbuf * | |
4839 | ofputil_encode_queue_stats_request(enum ofp_version ofp_version, | |
4840 | const struct ofputil_queue_stats_request *oqsr) | |
4841 | { | |
4842 | struct ofpbuf *request; | |
4843 | ||
4844 | switch (ofp_version) { | |
4845 | case OFP11_VERSION: | |
2e1ae200 JR |
4846 | case OFP12_VERSION: |
4847 | case OFP13_VERSION: { | |
64626975 SH |
4848 | struct ofp11_queue_stats_request *req; |
4849 | request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0); | |
4850 | req = ofpbuf_put_zeros(request, sizeof *req); | |
4851 | req->port_no = ofputil_port_to_ofp11(oqsr->port_no); | |
4852 | req->queue_id = htonl(oqsr->queue_id); | |
4853 | break; | |
4854 | } | |
4855 | case OFP10_VERSION: { | |
4856 | struct ofp10_queue_stats_request *req; | |
4857 | request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0); | |
4858 | req = ofpbuf_put_zeros(request, sizeof *req); | |
7f05e7ab JR |
4859 | /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */ |
4860 | req->port_no = htons(oqsr->port_no == OFPP_ANY | |
4861 | ? OFPP_ALL : oqsr->port_no); | |
64626975 SH |
4862 | req->queue_id = htonl(oqsr->queue_id); |
4863 | break; | |
4864 | } | |
4865 | default: | |
4866 | NOT_REACHED(); | |
4867 | } | |
4868 | ||
4869 | return request; | |
4870 | } | |
4871 | ||
4872 | /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY | |
4873 | * message 'oh'. */ | |
4874 | size_t | |
4875 | ofputil_count_queue_stats(const struct ofp_header *oh) | |
4876 | { | |
4877 | struct ofpbuf b; | |
4878 | ||
4879 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); | |
4880 | ofpraw_pull_assert(&b); | |
4881 | ||
4882 | BUILD_ASSERT(sizeof(struct ofp10_queue_stats) == | |
4883 | sizeof(struct ofp11_queue_stats)); | |
4884 | return b.size / sizeof(struct ofp10_queue_stats); | |
4885 | } | |
4886 | ||
4887 | static enum ofperr | |
4888 | ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs, | |
4889 | const struct ofp10_queue_stats *qs10) | |
4890 | { | |
4891 | oqs->port_no = ntohs(qs10->port_no); | |
4892 | oqs->queue_id = ntohl(qs10->queue_id); | |
4893 | oqs->stats.tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes)); | |
4894 | oqs->stats.tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets)); | |
4895 | oqs->stats.tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors)); | |
4896 | ||
4897 | return 0; | |
4898 | } | |
4899 | ||
4900 | static enum ofperr | |
4901 | ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs, | |
4902 | const struct ofp11_queue_stats *qs11) | |
4903 | { | |
4904 | enum ofperr error; | |
4905 | ||
4906 | error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no); | |
4907 | if (error) { | |
4908 | return error; | |
4909 | } | |
4910 | ||
4911 | oqs->queue_id = ntohl(qs11->queue_id); | |
4912 | oqs->stats.tx_bytes = ntohll(qs11->tx_bytes); | |
4913 | oqs->stats.tx_packets = ntohll(qs11->tx_packets); | |
4914 | oqs->stats.tx_errors = ntohll(qs11->tx_errors); | |
4915 | ||
4916 | return 0; | |
4917 | } | |
4918 | ||
2e1ae200 JR |
4919 | static enum ofperr |
4920 | ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs, | |
4921 | const struct ofp13_queue_stats *qs13) | |
4922 | { | |
4923 | enum ofperr error | |
4924 | = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs); | |
4925 | if (!error) { | |
4926 | /* FIXME: Get qs13->duration_sec and qs13->duration_nsec, | |
4927 | * Add to netdev_queue_stats? */ | |
4928 | } | |
4929 | ||
4930 | return error; | |
4931 | } | |
4932 | ||
64626975 SH |
4933 | /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract |
4934 | * ofputil_queue_stats in 'qs'. | |
4935 | * | |
4936 | * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow | |
4937 | * message. Calling this function multiple times for a single 'msg' iterates | |
4938 | * through the replies. The caller must initially leave 'msg''s layer pointers | |
4939 | * null and not modify them between calls. | |
4940 | * | |
4941 | * Returns 0 if successful, EOF if no replies were left in this 'msg', | |
4942 | * otherwise a positive errno value. */ | |
4943 | int | |
4944 | ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg) | |
4945 | { | |
4946 | enum ofperr error; | |
4947 | enum ofpraw raw; | |
4948 | ||
4949 | error = (msg->l2 | |
4950 | ? ofpraw_decode(&raw, msg->l2) | |
4951 | : ofpraw_pull(&raw, msg)); | |
4952 | if (error) { | |
4953 | return error; | |
4954 | } | |
4955 | ||
4956 | if (!msg->size) { | |
4957 | return EOF; | |
2e1ae200 JR |
4958 | } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) { |
4959 | const struct ofp13_queue_stats *qs13; | |
4960 | ||
4961 | qs13 = ofpbuf_try_pull(msg, sizeof *qs13); | |
4962 | if (!qs13) { | |
4963 | goto bad_len; | |
4964 | } | |
4965 | return ofputil_queue_stats_from_ofp13(qs, qs13); | |
64626975 SH |
4966 | } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) { |
4967 | const struct ofp11_queue_stats *qs11; | |
4968 | ||
4969 | qs11 = ofpbuf_try_pull(msg, sizeof *qs11); | |
4970 | if (!qs11) { | |
2e1ae200 | 4971 | goto bad_len; |
64626975 SH |
4972 | } |
4973 | return ofputil_queue_stats_from_ofp11(qs, qs11); | |
4974 | } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) { | |
4975 | const struct ofp10_queue_stats *qs10; | |
4976 | ||
4977 | qs10 = ofpbuf_try_pull(msg, sizeof *qs10); | |
4978 | if (!qs10) { | |
2e1ae200 | 4979 | goto bad_len; |
64626975 SH |
4980 | } |
4981 | return ofputil_queue_stats_from_ofp10(qs, qs10); | |
4982 | } else { | |
4983 | NOT_REACHED(); | |
4984 | } | |
2e1ae200 JR |
4985 | |
4986 | bad_len: | |
4987 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %zu leftover " | |
4988 | "bytes at end", msg->size); | |
4989 | return OFPERR_OFPBRC_BAD_LEN; | |
64626975 SH |
4990 | } |
4991 | ||
4992 | static void | |
4993 | ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs, | |
4994 | struct ofp10_queue_stats *qs10) | |
4995 | { | |
4996 | qs10->port_no = htons(oqs->port_no); | |
4997 | memset(qs10->pad, 0, sizeof qs10->pad); | |
4998 | qs10->queue_id = htonl(oqs->queue_id); | |
4999 | put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->stats.tx_bytes)); | |
5000 | put_32aligned_be64(&qs10->tx_packets, htonll(oqs->stats.tx_packets)); | |
5001 | put_32aligned_be64(&qs10->tx_errors, htonll(oqs->stats.tx_errors)); | |
5002 | } | |
5003 | ||
5004 | static void | |
5005 | ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs, | |
5006 | struct ofp11_queue_stats *qs11) | |
5007 | { | |
5008 | qs11->port_no = ofputil_port_to_ofp11(oqs->port_no); | |
5009 | qs11->queue_id = htonl(oqs->queue_id); | |
5010 | qs11->tx_bytes = htonll(oqs->stats.tx_bytes); | |
5011 | qs11->tx_packets = htonll(oqs->stats.tx_packets); | |
5012 | qs11->tx_errors = htonll(oqs->stats.tx_errors); | |
5013 | } | |
5014 | ||
2e1ae200 JR |
5015 | static void |
5016 | ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs, | |
5017 | struct ofp13_queue_stats *qs13) | |
5018 | { | |
5019 | ofputil_queue_stats_to_ofp11(oqs, &qs13->qs); | |
5020 | /* OF 1.3 adds duration fields */ | |
5021 | /* FIXME: Need to implement queue alive duration (sec + nsec) */ | |
5022 | qs13->duration_sec = htonl(~0); | |
5023 | qs13->duration_nsec = htonl(~0); | |
5024 | } | |
5025 | ||
64626975 SH |
5026 | /* Encode a queue stat for 'oqs' and append it to 'replies'. */ |
5027 | void | |
5028 | ofputil_append_queue_stat(struct list *replies, | |
5029 | const struct ofputil_queue_stats *oqs) | |
5030 | { | |
5031 | struct ofpbuf *msg = ofpbuf_from_list(list_back(replies)); | |
5032 | struct ofp_header *oh = msg->data; | |
5033 | ||
5034 | switch ((enum ofp_version)oh->version) { | |
2e1ae200 JR |
5035 | case OFP13_VERSION: { |
5036 | struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply); | |
5037 | ofputil_queue_stats_to_ofp13(oqs, reply); | |
5038 | break; | |
5039 | } | |
5040 | ||
64626975 SH |
5041 | case OFP12_VERSION: |
5042 | case OFP11_VERSION: { | |
2e1ae200 | 5043 | struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply); |
64626975 SH |
5044 | ofputil_queue_stats_to_ofp11(oqs, reply); |
5045 | break; | |
5046 | } | |
5047 | ||
5048 | case OFP10_VERSION: { | |
2e1ae200 | 5049 | struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply); |
64626975 SH |
5050 | ofputil_queue_stats_to_ofp10(oqs, reply); |
5051 | break; | |
5052 | } | |
5053 | ||
5054 | default: | |
5055 | NOT_REACHED(); | |
5056 | } | |
5057 | } |