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fa37b408 | 1 | /* |
e0edde6f | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012 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> |
3b6a2571 | 26 | #include "autopath.h" |
daff3353 | 27 | #include "bundle.h" |
10a24935 | 28 | #include "byte-order.h" |
d8ae4d67 | 29 | #include "classifier.h" |
dc4762ed | 30 | #include "dynamic-string.h" |
75a75043 | 31 | #include "learn.h" |
816fd533 | 32 | #include "meta-flow.h" |
9e1fd49b | 33 | #include "multipath.h" |
6c038611 | 34 | #include "netdev.h" |
b6c9e612 | 35 | #include "nx-match.h" |
f25d0cf3 | 36 | #include "ofp-actions.h" |
dc4762ed | 37 | #include "ofp-errors.h" |
982697a4 | 38 | #include "ofp-msgs.h" |
fa37b408 BP |
39 | #include "ofp-util.h" |
40 | #include "ofpbuf.h" | |
41 | #include "packets.h" | |
42 | #include "random.h" | |
4ffd1b43 | 43 | #include "unaligned.h" |
e41a9130 | 44 | #include "type-props.h" |
5136ce49 | 45 | #include "vlog.h" |
fa37b408 | 46 | |
d98e6007 | 47 | VLOG_DEFINE_THIS_MODULE(ofp_util); |
fa37b408 BP |
48 | |
49 | /* Rate limit for OpenFlow message parse errors. These always indicate a bug | |
50 | * in the peer and so there's not much point in showing a lot of them. */ | |
51 | static struct vlog_rate_limit bad_ofmsg_rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
52 | ||
0596e897 BP |
53 | /* Given the wildcard bit count in the least-significant 6 of 'wcbits', returns |
54 | * an IP netmask with a 1 in each bit that must match and a 0 in each bit that | |
55 | * is wildcarded. | |
56 | * | |
57 | * The bits in 'wcbits' are in the format used in enum ofp_flow_wildcards: 0 | |
58 | * is exact match, 1 ignores the LSB, 2 ignores the 2 least-significant bits, | |
59 | * ..., 32 and higher wildcard the entire field. This is the *opposite* of the | |
60 | * usual convention where e.g. /24 indicates that 8 bits (not 24 bits) are | |
61 | * wildcarded. */ | |
62 | ovs_be32 | |
63 | ofputil_wcbits_to_netmask(int wcbits) | |
64 | { | |
65 | wcbits &= 0x3f; | |
66 | return wcbits < 32 ? htonl(~((1u << wcbits) - 1)) : 0; | |
67 | } | |
68 | ||
69 | /* Given the IP netmask 'netmask', returns the number of bits of the IP address | |
c08201d6 BP |
70 | * that it wildcards, that is, the number of 0-bits in 'netmask', a number |
71 | * between 0 and 32 inclusive. | |
72 | * | |
73 | * If 'netmask' is not a CIDR netmask (see ip_is_cidr()), the return value will | |
74 | * still be in the valid range but isn't otherwise meaningful. */ | |
0596e897 BP |
75 | int |
76 | ofputil_netmask_to_wcbits(ovs_be32 netmask) | |
77 | { | |
aad29cd1 | 78 | return 32 - ip_count_cidr_bits(netmask); |
0596e897 BP |
79 | } |
80 | ||
eec25dc1 | 81 | /* Converts the OpenFlow 1.0 wildcards in 'ofpfw' (OFPFW10_*) into a |
81a76618 | 82 | * flow_wildcards in 'wc' for use in struct match. It is the caller's |
eec25dc1 BP |
83 | * responsibility to handle the special case where the flow match's dl_vlan is |
84 | * set to OFP_VLAN_NONE. */ | |
7286b1e1 | 85 | void |
eec25dc1 | 86 | ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *wc) |
d8ae4d67 | 87 | { |
72e8bf28 | 88 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 18); |
a877206f | 89 | |
81a76618 | 90 | /* Initialize most of wc. */ |
f9ba8dad | 91 | flow_wildcards_init_catchall(wc); |
bad68a99 | 92 | |
0bdc4bec | 93 | if (!(ofpfw & OFPFW10_IN_PORT)) { |
26720e24 | 94 | wc->masks.in_port = UINT16_MAX; |
27cafc5f | 95 | } |
5d9499c4 BP |
96 | |
97 | if (!(ofpfw & OFPFW10_NW_TOS)) { | |
26720e24 | 98 | wc->masks.nw_tos |= IP_DSCP_MASK; |
d8ae4d67 | 99 | } |
7257b535 | 100 | |
851d3105 | 101 | if (!(ofpfw & OFPFW10_NW_PROTO)) { |
26720e24 | 102 | wc->masks.nw_proto = UINT8_MAX; |
851d3105 | 103 | } |
26720e24 BP |
104 | wc->masks.nw_src = ofputil_wcbits_to_netmask(ofpfw |
105 | >> OFPFW10_NW_SRC_SHIFT); | |
106 | wc->masks.nw_dst = ofputil_wcbits_to_netmask(ofpfw | |
107 | >> OFPFW10_NW_DST_SHIFT); | |
d8ae4d67 | 108 | |
eec25dc1 | 109 | if (!(ofpfw & OFPFW10_TP_SRC)) { |
26720e24 | 110 | wc->masks.tp_src = htons(UINT16_MAX); |
73f33563 | 111 | } |
eec25dc1 | 112 | if (!(ofpfw & OFPFW10_TP_DST)) { |
26720e24 | 113 | wc->masks.tp_dst = htons(UINT16_MAX); |
73f33563 BP |
114 | } |
115 | ||
eec25dc1 | 116 | if (!(ofpfw & OFPFW10_DL_SRC)) { |
26720e24 | 117 | memset(wc->masks.dl_src, 0xff, ETH_ADDR_LEN); |
73c0ce34 | 118 | } |
eec25dc1 | 119 | if (!(ofpfw & OFPFW10_DL_DST)) { |
26720e24 | 120 | memset(wc->masks.dl_dst, 0xff, ETH_ADDR_LEN); |
d8ae4d67 | 121 | } |
e2170cff | 122 | if (!(ofpfw & OFPFW10_DL_TYPE)) { |
26720e24 | 123 | wc->masks.dl_type = htons(UINT16_MAX); |
e2170cff | 124 | } |
d8ae4d67 | 125 | |
eb6f28db | 126 | /* VLAN TCI mask. */ |
eec25dc1 | 127 | if (!(ofpfw & OFPFW10_DL_VLAN_PCP)) { |
26720e24 | 128 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
eb6f28db | 129 | } |
eec25dc1 | 130 | if (!(ofpfw & OFPFW10_DL_VLAN)) { |
26720e24 | 131 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
eb6f28db BP |
132 | } |
133 | } | |
134 | ||
81a76618 | 135 | /* Converts the ofp10_match in 'ofmatch' into a struct match in 'match'. */ |
eb6f28db | 136 | void |
81a76618 BP |
137 | ofputil_match_from_ofp10_match(const struct ofp10_match *ofmatch, |
138 | struct match *match) | |
139 | { | |
140 | uint32_t ofpfw = ntohl(ofmatch->wildcards) & OFPFW10_ALL; | |
141 | ||
142 | /* Initialize match->wc. */ | |
296e07ac | 143 | memset(&match->flow, 0, sizeof match->flow); |
81a76618 BP |
144 | ofputil_wildcard_from_ofpfw10(ofpfw, &match->wc); |
145 | ||
146 | /* Initialize most of match->flow. */ | |
147 | match->flow.nw_src = ofmatch->nw_src; | |
148 | match->flow.nw_dst = ofmatch->nw_dst; | |
149 | match->flow.in_port = ntohs(ofmatch->in_port); | |
150 | match->flow.dl_type = ofputil_dl_type_from_openflow(ofmatch->dl_type); | |
151 | match->flow.tp_src = ofmatch->tp_src; | |
152 | match->flow.tp_dst = ofmatch->tp_dst; | |
153 | memcpy(match->flow.dl_src, ofmatch->dl_src, ETH_ADDR_LEN); | |
154 | memcpy(match->flow.dl_dst, ofmatch->dl_dst, ETH_ADDR_LEN); | |
155 | match->flow.nw_tos = ofmatch->nw_tos & IP_DSCP_MASK; | |
156 | match->flow.nw_proto = ofmatch->nw_proto; | |
d8ae4d67 | 157 | |
66642cb4 | 158 | /* Translate VLANs. */ |
0c436519 | 159 | if (!(ofpfw & OFPFW10_DL_VLAN) && |
81a76618 | 160 | ofmatch->dl_vlan == htons(OFP10_VLAN_NONE)) { |
47271d0d BP |
161 | /* Match only packets without 802.1Q header. |
162 | * | |
eec25dc1 | 163 | * When OFPFW10_DL_VLAN_PCP is wildcarded, this is obviously correct. |
47271d0d | 164 | * |
eec25dc1 | 165 | * If OFPFW10_DL_VLAN_PCP is matched, the flow match is contradictory, |
47271d0d BP |
166 | * because we can't have a specific PCP without an 802.1Q header. |
167 | * However, older versions of OVS treated this as matching packets | |
168 | * withut an 802.1Q header, so we do here too. */ | |
81a76618 BP |
169 | match->flow.vlan_tci = htons(0); |
170 | match->wc.masks.vlan_tci = htons(0xffff); | |
47271d0d BP |
171 | } else { |
172 | ovs_be16 vid, pcp, tci; | |
173 | ||
81a76618 BP |
174 | vid = ofmatch->dl_vlan & htons(VLAN_VID_MASK); |
175 | pcp = htons((ofmatch->dl_vlan_pcp << VLAN_PCP_SHIFT) & VLAN_PCP_MASK); | |
47271d0d | 176 | tci = vid | pcp | htons(VLAN_CFI); |
81a76618 | 177 | match->flow.vlan_tci = tci & match->wc.masks.vlan_tci; |
66642cb4 BP |
178 | } |
179 | ||
d8ae4d67 | 180 | /* Clean up. */ |
81a76618 | 181 | match_zero_wildcarded_fields(match); |
d8ae4d67 BP |
182 | } |
183 | ||
81a76618 | 184 | /* Convert 'match' into the OpenFlow 1.0 match structure 'ofmatch'. */ |
d8ae4d67 | 185 | void |
81a76618 BP |
186 | ofputil_match_to_ofp10_match(const struct match *match, |
187 | struct ofp10_match *ofmatch) | |
d8ae4d67 | 188 | { |
81a76618 | 189 | const struct flow_wildcards *wc = &match->wc; |
eeba8e4f | 190 | uint32_t ofpfw; |
d8ae4d67 | 191 | |
66642cb4 | 192 | /* Figure out most OpenFlow wildcards. */ |
27cafc5f | 193 | ofpfw = 0; |
26720e24 | 194 | if (!wc->masks.in_port) { |
27cafc5f BP |
195 | ofpfw |= OFPFW10_IN_PORT; |
196 | } | |
26720e24 | 197 | if (!wc->masks.dl_type) { |
27cafc5f BP |
198 | ofpfw |= OFPFW10_DL_TYPE; |
199 | } | |
26720e24 | 200 | if (!wc->masks.nw_proto) { |
27cafc5f BP |
201 | ofpfw |= OFPFW10_NW_PROTO; |
202 | } | |
26720e24 | 203 | ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_src) |
eec25dc1 | 204 | << OFPFW10_NW_SRC_SHIFT); |
26720e24 | 205 | ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_dst) |
eec25dc1 | 206 | << OFPFW10_NW_DST_SHIFT); |
26720e24 | 207 | if (!(wc->masks.nw_tos & IP_DSCP_MASK)) { |
eec25dc1 | 208 | ofpfw |= OFPFW10_NW_TOS; |
d8ae4d67 | 209 | } |
26720e24 | 210 | if (!wc->masks.tp_src) { |
eec25dc1 | 211 | ofpfw |= OFPFW10_TP_SRC; |
73f33563 | 212 | } |
26720e24 | 213 | if (!wc->masks.tp_dst) { |
eec25dc1 | 214 | ofpfw |= OFPFW10_TP_DST; |
73f33563 | 215 | } |
26720e24 | 216 | if (eth_addr_is_zero(wc->masks.dl_src)) { |
eec25dc1 | 217 | ofpfw |= OFPFW10_DL_SRC; |
73c0ce34 | 218 | } |
26720e24 | 219 | if (eth_addr_is_zero(wc->masks.dl_dst)) { |
eec25dc1 | 220 | ofpfw |= OFPFW10_DL_DST; |
73c0ce34 | 221 | } |
ff9d3826 | 222 | |
66642cb4 | 223 | /* Translate VLANs. */ |
81a76618 BP |
224 | ofmatch->dl_vlan = htons(0); |
225 | ofmatch->dl_vlan_pcp = 0; | |
226 | if (match->wc.masks.vlan_tci == htons(0)) { | |
eec25dc1 | 227 | ofpfw |= OFPFW10_DL_VLAN | OFPFW10_DL_VLAN_PCP; |
81a76618 BP |
228 | } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI) |
229 | && !(match->flow.vlan_tci & htons(VLAN_CFI))) { | |
230 | ofmatch->dl_vlan = htons(OFP10_VLAN_NONE); | |
41ca9a1e | 231 | ofpfw |= OFPFW10_DL_VLAN_PCP; |
66642cb4 | 232 | } else { |
81a76618 | 233 | if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) { |
eec25dc1 | 234 | ofpfw |= OFPFW10_DL_VLAN; |
66642cb4 | 235 | } else { |
81a76618 | 236 | ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci)); |
66642cb4 BP |
237 | } |
238 | ||
81a76618 | 239 | if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) { |
eec25dc1 | 240 | ofpfw |= OFPFW10_DL_VLAN_PCP; |
66642cb4 | 241 | } else { |
81a76618 | 242 | ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci); |
66642cb4 BP |
243 | } |
244 | } | |
245 | ||
246 | /* Compose most of the match structure. */ | |
81a76618 BP |
247 | ofmatch->wildcards = htonl(ofpfw); |
248 | ofmatch->in_port = htons(match->flow.in_port); | |
249 | memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN); | |
250 | memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN); | |
251 | ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type); | |
252 | ofmatch->nw_src = match->flow.nw_src; | |
253 | ofmatch->nw_dst = match->flow.nw_dst; | |
254 | ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK; | |
255 | ofmatch->nw_proto = match->flow.nw_proto; | |
256 | ofmatch->tp_src = match->flow.tp_src; | |
257 | ofmatch->tp_dst = match->flow.tp_dst; | |
258 | memset(ofmatch->pad1, '\0', sizeof ofmatch->pad1); | |
259 | memset(ofmatch->pad2, '\0', sizeof ofmatch->pad2); | |
d8ae4d67 BP |
260 | } |
261 | ||
aa319503 | 262 | enum ofperr |
81a76618 BP |
263 | ofputil_pull_ofp11_match(struct ofpbuf *buf, struct match *match, |
264 | uint16_t *padded_match_len) | |
aa319503 | 265 | { |
36a16881 SH |
266 | struct ofp11_match_header *omh = buf->data; |
267 | uint16_t match_len; | |
aa319503 | 268 | |
36a16881 | 269 | if (buf->size < sizeof *omh) { |
aa319503 BP |
270 | return OFPERR_OFPBMC_BAD_LEN; |
271 | } | |
272 | ||
36a16881 SH |
273 | match_len = ntohs(omh->length); |
274 | ||
aa319503 | 275 | switch (ntohs(omh->type)) { |
36a16881 SH |
276 | case OFPMT_STANDARD: { |
277 | struct ofp11_match *om; | |
278 | ||
279 | if (match_len != sizeof *om || buf->size < sizeof *om) { | |
aa319503 BP |
280 | return OFPERR_OFPBMC_BAD_LEN; |
281 | } | |
282 | om = ofpbuf_pull(buf, sizeof *om); | |
36a16881 SH |
283 | if (padded_match_len) { |
284 | *padded_match_len = match_len; | |
285 | } | |
81a76618 | 286 | return ofputil_match_from_ofp11_match(om, match); |
36a16881 SH |
287 | } |
288 | ||
289 | case OFPMT_OXM: | |
290 | if (padded_match_len) { | |
291 | *padded_match_len = ROUND_UP(match_len, 8); | |
292 | } | |
81a76618 | 293 | return oxm_pull_match(buf, match); |
aa319503 BP |
294 | |
295 | default: | |
296 | return OFPERR_OFPBMC_BAD_TYPE; | |
297 | } | |
298 | } | |
299 | ||
81a76618 BP |
300 | /* Converts the ofp11_match in 'match' into a struct match in 'match. Returns |
301 | * 0 if successful, otherwise an OFPERR_* value. */ | |
410698cf | 302 | enum ofperr |
81a76618 BP |
303 | ofputil_match_from_ofp11_match(const struct ofp11_match *ofmatch, |
304 | struct match *match) | |
410698cf | 305 | { |
81a76618 | 306 | uint16_t wc = ntohl(ofmatch->wildcards); |
410698cf BP |
307 | uint8_t dl_src_mask[ETH_ADDR_LEN]; |
308 | uint8_t dl_dst_mask[ETH_ADDR_LEN]; | |
8087f5ff | 309 | bool ipv4, arp, rarp; |
410698cf BP |
310 | int i; |
311 | ||
81a76618 | 312 | match_init_catchall(match); |
410698cf BP |
313 | |
314 | if (!(wc & OFPFW11_IN_PORT)) { | |
315 | uint16_t ofp_port; | |
316 | enum ofperr error; | |
317 | ||
81a76618 | 318 | error = ofputil_port_from_ofp11(ofmatch->in_port, &ofp_port); |
410698cf BP |
319 | if (error) { |
320 | return OFPERR_OFPBMC_BAD_VALUE; | |
321 | } | |
81a76618 | 322 | match_set_in_port(match, ofp_port); |
410698cf BP |
323 | } |
324 | ||
325 | for (i = 0; i < ETH_ADDR_LEN; i++) { | |
81a76618 | 326 | dl_src_mask[i] = ~ofmatch->dl_src_mask[i]; |
410698cf | 327 | } |
81a76618 | 328 | match_set_dl_src_masked(match, ofmatch->dl_src, dl_src_mask); |
410698cf BP |
329 | |
330 | for (i = 0; i < ETH_ADDR_LEN; i++) { | |
81a76618 | 331 | dl_dst_mask[i] = ~ofmatch->dl_dst_mask[i]; |
410698cf | 332 | } |
81a76618 | 333 | match_set_dl_dst_masked(match, ofmatch->dl_dst, dl_dst_mask); |
410698cf BP |
334 | |
335 | if (!(wc & OFPFW11_DL_VLAN)) { | |
81a76618 | 336 | if (ofmatch->dl_vlan == htons(OFPVID11_NONE)) { |
410698cf | 337 | /* Match only packets without a VLAN tag. */ |
81a76618 BP |
338 | match->flow.vlan_tci = htons(0); |
339 | match->wc.masks.vlan_tci = htons(UINT16_MAX); | |
410698cf | 340 | } else { |
81a76618 | 341 | if (ofmatch->dl_vlan == htons(OFPVID11_ANY)) { |
410698cf | 342 | /* Match any packet with a VLAN tag regardless of VID. */ |
81a76618 BP |
343 | match->flow.vlan_tci = htons(VLAN_CFI); |
344 | match->wc.masks.vlan_tci = htons(VLAN_CFI); | |
345 | } else if (ntohs(ofmatch->dl_vlan) < 4096) { | |
410698cf | 346 | /* Match only packets with the specified VLAN VID. */ |
81a76618 BP |
347 | match->flow.vlan_tci = htons(VLAN_CFI) | ofmatch->dl_vlan; |
348 | match->wc.masks.vlan_tci = htons(VLAN_CFI | VLAN_VID_MASK); | |
410698cf BP |
349 | } else { |
350 | /* Invalid VID. */ | |
351 | return OFPERR_OFPBMC_BAD_VALUE; | |
352 | } | |
353 | ||
354 | if (!(wc & OFPFW11_DL_VLAN_PCP)) { | |
81a76618 BP |
355 | if (ofmatch->dl_vlan_pcp <= 7) { |
356 | match->flow.vlan_tci |= htons(ofmatch->dl_vlan_pcp | |
357 | << VLAN_PCP_SHIFT); | |
358 | match->wc.masks.vlan_tci |= htons(VLAN_PCP_MASK); | |
410698cf BP |
359 | } else { |
360 | /* Invalid PCP. */ | |
361 | return OFPERR_OFPBMC_BAD_VALUE; | |
362 | } | |
363 | } | |
364 | } | |
365 | } | |
366 | ||
367 | if (!(wc & OFPFW11_DL_TYPE)) { | |
81a76618 BP |
368 | match_set_dl_type(match, |
369 | ofputil_dl_type_from_openflow(ofmatch->dl_type)); | |
410698cf BP |
370 | } |
371 | ||
81a76618 BP |
372 | ipv4 = match->flow.dl_type == htons(ETH_TYPE_IP); |
373 | arp = match->flow.dl_type == htons(ETH_TYPE_ARP); | |
8087f5ff | 374 | rarp = match->flow.dl_type == htons(ETH_TYPE_RARP); |
410698cf BP |
375 | |
376 | if (ipv4 && !(wc & OFPFW11_NW_TOS)) { | |
81a76618 | 377 | if (ofmatch->nw_tos & ~IP_DSCP_MASK) { |
410698cf BP |
378 | /* Invalid TOS. */ |
379 | return OFPERR_OFPBMC_BAD_VALUE; | |
380 | } | |
381 | ||
81a76618 | 382 | match_set_nw_dscp(match, ofmatch->nw_tos); |
410698cf BP |
383 | } |
384 | ||
8087f5ff | 385 | if (ipv4 || arp || rarp) { |
410698cf | 386 | if (!(wc & OFPFW11_NW_PROTO)) { |
81a76618 | 387 | match_set_nw_proto(match, ofmatch->nw_proto); |
410698cf | 388 | } |
81a76618 BP |
389 | match_set_nw_src_masked(match, ofmatch->nw_src, ~ofmatch->nw_src_mask); |
390 | match_set_nw_dst_masked(match, ofmatch->nw_dst, ~ofmatch->nw_dst_mask); | |
410698cf BP |
391 | } |
392 | ||
393 | #define OFPFW11_TP_ALL (OFPFW11_TP_SRC | OFPFW11_TP_DST) | |
394 | if (ipv4 && (wc & OFPFW11_TP_ALL) != OFPFW11_TP_ALL) { | |
81a76618 | 395 | switch (match->flow.nw_proto) { |
410698cf BP |
396 | case IPPROTO_ICMP: |
397 | /* "A.2.3 Flow Match Structures" in OF1.1 says: | |
398 | * | |
399 | * The tp_src and tp_dst fields will be ignored unless the | |
400 | * network protocol specified is as TCP, UDP or SCTP. | |
401 | * | |
402 | * but I'm pretty sure we should support ICMP too, otherwise | |
403 | * that's a regression from OF1.0. */ | |
404 | if (!(wc & OFPFW11_TP_SRC)) { | |
81a76618 | 405 | uint16_t icmp_type = ntohs(ofmatch->tp_src); |
410698cf | 406 | if (icmp_type < 0x100) { |
81a76618 | 407 | match_set_icmp_type(match, icmp_type); |
410698cf BP |
408 | } else { |
409 | return OFPERR_OFPBMC_BAD_FIELD; | |
410 | } | |
411 | } | |
412 | if (!(wc & OFPFW11_TP_DST)) { | |
81a76618 | 413 | uint16_t icmp_code = ntohs(ofmatch->tp_dst); |
410698cf | 414 | if (icmp_code < 0x100) { |
81a76618 | 415 | match_set_icmp_code(match, icmp_code); |
410698cf BP |
416 | } else { |
417 | return OFPERR_OFPBMC_BAD_FIELD; | |
418 | } | |
419 | } | |
420 | break; | |
421 | ||
422 | case IPPROTO_TCP: | |
423 | case IPPROTO_UDP: | |
424 | if (!(wc & (OFPFW11_TP_SRC))) { | |
81a76618 | 425 | match_set_tp_src(match, ofmatch->tp_src); |
410698cf BP |
426 | } |
427 | if (!(wc & (OFPFW11_TP_DST))) { | |
81a76618 | 428 | match_set_tp_dst(match, ofmatch->tp_dst); |
410698cf BP |
429 | } |
430 | break; | |
431 | ||
432 | case IPPROTO_SCTP: | |
433 | /* We don't support SCTP and it seems that we should tell the | |
434 | * controller, since OF1.1 implementations are supposed to. */ | |
435 | return OFPERR_OFPBMC_BAD_FIELD; | |
436 | ||
437 | default: | |
438 | /* OF1.1 says explicitly to ignore this. */ | |
439 | break; | |
440 | } | |
441 | } | |
442 | ||
81a76618 BP |
443 | if (match->flow.dl_type == htons(ETH_TYPE_MPLS) || |
444 | match->flow.dl_type == htons(ETH_TYPE_MPLS_MCAST)) { | |
410698cf BP |
445 | enum { OFPFW11_MPLS_ALL = OFPFW11_MPLS_LABEL | OFPFW11_MPLS_TC }; |
446 | ||
447 | if ((wc & OFPFW11_MPLS_ALL) != OFPFW11_MPLS_ALL) { | |
448 | /* MPLS not supported. */ | |
449 | return OFPERR_OFPBMC_BAD_TAG; | |
450 | } | |
451 | } | |
452 | ||
81a76618 BP |
453 | match_set_metadata_masked(match, ofmatch->metadata, |
454 | ~ofmatch->metadata_mask); | |
410698cf BP |
455 | |
456 | return 0; | |
457 | } | |
458 | ||
81a76618 | 459 | /* Convert 'match' into the OpenFlow 1.1 match structure 'ofmatch'. */ |
410698cf | 460 | void |
81a76618 BP |
461 | ofputil_match_to_ofp11_match(const struct match *match, |
462 | struct ofp11_match *ofmatch) | |
410698cf BP |
463 | { |
464 | uint32_t wc = 0; | |
465 | int i; | |
466 | ||
81a76618 BP |
467 | memset(ofmatch, 0, sizeof *ofmatch); |
468 | ofmatch->omh.type = htons(OFPMT_STANDARD); | |
469 | ofmatch->omh.length = htons(OFPMT11_STANDARD_LENGTH); | |
410698cf | 470 | |
81a76618 | 471 | if (!match->wc.masks.in_port) { |
410698cf BP |
472 | wc |= OFPFW11_IN_PORT; |
473 | } else { | |
81a76618 | 474 | ofmatch->in_port = ofputil_port_to_ofp11(match->flow.in_port); |
410698cf BP |
475 | } |
476 | ||
81a76618 | 477 | memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN); |
410698cf | 478 | for (i = 0; i < ETH_ADDR_LEN; i++) { |
81a76618 | 479 | ofmatch->dl_src_mask[i] = ~match->wc.masks.dl_src[i]; |
410698cf BP |
480 | } |
481 | ||
81a76618 | 482 | memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN); |
410698cf | 483 | for (i = 0; i < ETH_ADDR_LEN; i++) { |
81a76618 | 484 | ofmatch->dl_dst_mask[i] = ~match->wc.masks.dl_dst[i]; |
410698cf BP |
485 | } |
486 | ||
81a76618 | 487 | if (match->wc.masks.vlan_tci == htons(0)) { |
410698cf | 488 | wc |= OFPFW11_DL_VLAN | OFPFW11_DL_VLAN_PCP; |
81a76618 BP |
489 | } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI) |
490 | && !(match->flow.vlan_tci & htons(VLAN_CFI))) { | |
491 | ofmatch->dl_vlan = htons(OFPVID11_NONE); | |
410698cf BP |
492 | wc |= OFPFW11_DL_VLAN_PCP; |
493 | } else { | |
81a76618 BP |
494 | if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) { |
495 | ofmatch->dl_vlan = htons(OFPVID11_ANY); | |
410698cf | 496 | } else { |
81a76618 | 497 | ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci)); |
410698cf BP |
498 | } |
499 | ||
81a76618 | 500 | if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) { |
410698cf BP |
501 | wc |= OFPFW11_DL_VLAN_PCP; |
502 | } else { | |
81a76618 | 503 | ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci); |
410698cf BP |
504 | } |
505 | } | |
506 | ||
81a76618 | 507 | if (!match->wc.masks.dl_type) { |
410698cf BP |
508 | wc |= OFPFW11_DL_TYPE; |
509 | } else { | |
81a76618 | 510 | ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type); |
410698cf BP |
511 | } |
512 | ||
81a76618 | 513 | if (!(match->wc.masks.nw_tos & IP_DSCP_MASK)) { |
410698cf BP |
514 | wc |= OFPFW11_NW_TOS; |
515 | } else { | |
81a76618 | 516 | ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK; |
410698cf BP |
517 | } |
518 | ||
81a76618 | 519 | if (!match->wc.masks.nw_proto) { |
410698cf BP |
520 | wc |= OFPFW11_NW_PROTO; |
521 | } else { | |
81a76618 | 522 | ofmatch->nw_proto = match->flow.nw_proto; |
410698cf BP |
523 | } |
524 | ||
81a76618 BP |
525 | ofmatch->nw_src = match->flow.nw_src; |
526 | ofmatch->nw_src_mask = ~match->wc.masks.nw_src; | |
527 | ofmatch->nw_dst = match->flow.nw_dst; | |
528 | ofmatch->nw_dst_mask = ~match->wc.masks.nw_dst; | |
410698cf | 529 | |
81a76618 | 530 | if (!match->wc.masks.tp_src) { |
410698cf BP |
531 | wc |= OFPFW11_TP_SRC; |
532 | } else { | |
81a76618 | 533 | ofmatch->tp_src = match->flow.tp_src; |
410698cf BP |
534 | } |
535 | ||
81a76618 | 536 | if (!match->wc.masks.tp_dst) { |
410698cf BP |
537 | wc |= OFPFW11_TP_DST; |
538 | } else { | |
81a76618 | 539 | ofmatch->tp_dst = match->flow.tp_dst; |
410698cf BP |
540 | } |
541 | ||
542 | /* MPLS not supported. */ | |
543 | wc |= OFPFW11_MPLS_LABEL; | |
544 | wc |= OFPFW11_MPLS_TC; | |
545 | ||
81a76618 BP |
546 | ofmatch->metadata = match->flow.metadata; |
547 | ofmatch->metadata_mask = ~match->wc.masks.metadata; | |
410698cf | 548 | |
81a76618 | 549 | ofmatch->wildcards = htonl(wc); |
410698cf BP |
550 | } |
551 | ||
36956a7d | 552 | /* Given a 'dl_type' value in the format used in struct flow, returns the |
eec25dc1 BP |
553 | * corresponding 'dl_type' value for use in an ofp10_match or ofp11_match |
554 | * structure. */ | |
36956a7d BP |
555 | ovs_be16 |
556 | ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type) | |
557 | { | |
558 | return (flow_dl_type == htons(FLOW_DL_TYPE_NONE) | |
559 | ? htons(OFP_DL_TYPE_NOT_ETH_TYPE) | |
560 | : flow_dl_type); | |
561 | } | |
562 | ||
eec25dc1 | 563 | /* Given a 'dl_type' value in the format used in an ofp10_match or ofp11_match |
36956a7d BP |
564 | * structure, returns the corresponding 'dl_type' value for use in struct |
565 | * flow. */ | |
566 | ovs_be16 | |
567 | ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type) | |
568 | { | |
569 | return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE) | |
570 | ? htons(FLOW_DL_TYPE_NONE) | |
571 | : ofp_dl_type); | |
572 | } | |
2e4f5fcf | 573 | \f |
27527aa0 | 574 | /* Protocols. */ |
7fa91113 | 575 | |
27527aa0 BP |
576 | struct proto_abbrev { |
577 | enum ofputil_protocol protocol; | |
578 | const char *name; | |
579 | }; | |
580 | ||
581 | /* Most users really don't care about some of the differences between | |
582 | * protocols. These abbreviations help with that. */ | |
583 | static const struct proto_abbrev proto_abbrevs[] = { | |
85813857 BP |
584 | { OFPUTIL_P_ANY, "any" }, |
585 | { OFPUTIL_P_OF10_STD_ANY, "OpenFlow10" }, | |
6d2c051a | 586 | { OFPUTIL_P_OF10_NXM_ANY, "NXM" }, |
e71bff1b | 587 | { OFPUTIL_P_ANY_OXM, "OXM" }, |
27527aa0 BP |
588 | }; |
589 | #define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs) | |
590 | ||
591 | enum ofputil_protocol ofputil_flow_dump_protocols[] = { | |
2e1ae200 | 592 | OFPUTIL_P_OF13_OXM, |
8d7785bd | 593 | OFPUTIL_P_OF12_OXM, |
85813857 BP |
594 | OFPUTIL_P_OF10_NXM, |
595 | OFPUTIL_P_OF10_STD, | |
27527aa0 BP |
596 | }; |
597 | size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols); | |
598 | ||
4f13da56 BP |
599 | /* Returns the set of ofputil_protocols that are supported with the given |
600 | * OpenFlow 'version'. 'version' should normally be an 8-bit OpenFlow version | |
601 | * identifier (e.g. 0x01 for OpenFlow 1.0, 0x02 for OpenFlow 1.1). Returns 0 | |
602 | * if 'version' is not supported or outside the valid range. */ | |
27527aa0 | 603 | enum ofputil_protocol |
4f13da56 | 604 | ofputil_protocols_from_ofp_version(enum ofp_version version) |
27527aa0 BP |
605 | { |
606 | switch (version) { | |
2e3fa633 | 607 | case OFP10_VERSION: |
4f13da56 | 608 | return OFPUTIL_P_OF10_STD_ANY | OFPUTIL_P_OF10_NXM_ANY; |
2e3fa633 | 609 | case OFP12_VERSION: |
85813857 | 610 | return OFPUTIL_P_OF12_OXM; |
2e1ae200 JR |
611 | case OFP13_VERSION: |
612 | return OFPUTIL_P_OF13_OXM; | |
2e3fa633 SH |
613 | case OFP11_VERSION: |
614 | default: | |
615 | return 0; | |
27527aa0 BP |
616 | } |
617 | } | |
618 | ||
4f13da56 BP |
619 | /* Returns the ofputil_protocol that is initially in effect on an OpenFlow |
620 | * connection that has negotiated the given 'version'. 'version' should | |
621 | * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow | |
622 | * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or | |
623 | * outside the valid range. */ | |
624 | enum ofputil_protocol | |
625 | ofputil_protocol_from_ofp_version(enum ofp_version version) | |
626 | { | |
627 | return rightmost_1bit(ofputil_protocols_from_ofp_version(version)); | |
628 | } | |
629 | ||
44d3732d | 630 | /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION, |
2e1ae200 | 631 | * etc.) that corresponds to 'protocol'. */ |
2e3fa633 | 632 | enum ofp_version |
9e1fd49b BP |
633 | ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol) |
634 | { | |
635 | switch (protocol) { | |
85813857 BP |
636 | case OFPUTIL_P_OF10_STD: |
637 | case OFPUTIL_P_OF10_STD_TID: | |
638 | case OFPUTIL_P_OF10_NXM: | |
639 | case OFPUTIL_P_OF10_NXM_TID: | |
9e1fd49b | 640 | return OFP10_VERSION; |
85813857 | 641 | case OFPUTIL_P_OF12_OXM: |
44d3732d | 642 | return OFP12_VERSION; |
2e1ae200 JR |
643 | case OFPUTIL_P_OF13_OXM: |
644 | return OFP13_VERSION; | |
9e1fd49b BP |
645 | } |
646 | ||
647 | NOT_REACHED(); | |
648 | } | |
649 | ||
4f13da56 BP |
650 | /* Returns a bitmap of OpenFlow versions that are supported by at |
651 | * least one of the 'protocols'. */ | |
652 | uint32_t | |
653 | ofputil_protocols_to_version_bitmap(enum ofputil_protocol protocols) | |
654 | { | |
655 | uint32_t bitmap = 0; | |
656 | ||
657 | for (; protocols; protocols = zero_rightmost_1bit(protocols)) { | |
658 | enum ofputil_protocol protocol = rightmost_1bit(protocols); | |
659 | ||
660 | bitmap |= 1u << ofputil_protocol_to_ofp_version(protocol); | |
661 | } | |
662 | ||
663 | return bitmap; | |
664 | } | |
665 | ||
666 | /* Returns the set of protocols that are supported on top of the | |
667 | * OpenFlow versions included in 'bitmap'. */ | |
668 | enum ofputil_protocol | |
669 | ofputil_protocols_from_version_bitmap(uint32_t bitmap) | |
670 | { | |
671 | enum ofputil_protocol protocols = 0; | |
672 | ||
673 | for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) { | |
674 | enum ofp_version version = rightmost_1bit_idx(bitmap); | |
675 | ||
676 | protocols |= ofputil_protocols_from_ofp_version(version); | |
677 | } | |
678 | ||
679 | return protocols; | |
680 | } | |
681 | ||
27527aa0 BP |
682 | /* Returns true if 'protocol' is a single OFPUTIL_P_* value, false |
683 | * otherwise. */ | |
7fa91113 | 684 | bool |
27527aa0 | 685 | ofputil_protocol_is_valid(enum ofputil_protocol protocol) |
7fa91113 | 686 | { |
27527aa0 BP |
687 | return protocol & OFPUTIL_P_ANY && is_pow2(protocol); |
688 | } | |
689 | ||
690 | /* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id | |
691 | * extension turned on or off if 'enable' is true or false, respectively. | |
692 | * | |
693 | * This extension is only useful for protocols whose "standard" version does | |
694 | * not allow specific tables to be modified. In particular, this is true of | |
695 | * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always | |
696 | * specifies a table ID and so there is no need for such an extension. When | |
697 | * 'protocol' is such a protocol that doesn't need a flow_mod_table_id | |
698 | * extension, this function just returns its 'protocol' argument unchanged | |
699 | * regardless of the value of 'enable'. */ | |
700 | enum ofputil_protocol | |
701 | ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable) | |
702 | { | |
703 | switch (protocol) { | |
85813857 BP |
704 | case OFPUTIL_P_OF10_STD: |
705 | case OFPUTIL_P_OF10_STD_TID: | |
706 | return enable ? OFPUTIL_P_OF10_STD_TID : OFPUTIL_P_OF10_STD; | |
27527aa0 | 707 | |
85813857 BP |
708 | case OFPUTIL_P_OF10_NXM: |
709 | case OFPUTIL_P_OF10_NXM_TID: | |
710 | return enable ? OFPUTIL_P_OF10_NXM_TID : OFPUTIL_P_OF10_NXM; | |
27527aa0 | 711 | |
85813857 BP |
712 | case OFPUTIL_P_OF12_OXM: |
713 | return OFPUTIL_P_OF12_OXM; | |
44d3732d | 714 | |
2e1ae200 JR |
715 | case OFPUTIL_P_OF13_OXM: |
716 | return OFPUTIL_P_OF13_OXM; | |
717 | ||
27527aa0 BP |
718 | default: |
719 | NOT_REACHED(); | |
7fa91113 | 720 | } |
27527aa0 | 721 | } |
7fa91113 | 722 | |
27527aa0 BP |
723 | /* Returns the "base" version of 'protocol'. That is, if 'protocol' includes |
724 | * some extension to a standard protocol version, the return value is the | |
725 | * standard version of that protocol without any extension. If 'protocol' is a | |
726 | * standard protocol version, returns 'protocol' unchanged. */ | |
727 | enum ofputil_protocol | |
728 | ofputil_protocol_to_base(enum ofputil_protocol protocol) | |
729 | { | |
730 | return ofputil_protocol_set_tid(protocol, false); | |
7fa91113 BP |
731 | } |
732 | ||
27527aa0 BP |
733 | /* Returns 'new_base' with any extensions taken from 'cur'. */ |
734 | enum ofputil_protocol | |
735 | ofputil_protocol_set_base(enum ofputil_protocol cur, | |
736 | enum ofputil_protocol new_base) | |
7fa91113 | 737 | { |
27527aa0 BP |
738 | bool tid = (cur & OFPUTIL_P_TID) != 0; |
739 | ||
740 | switch (new_base) { | |
85813857 BP |
741 | case OFPUTIL_P_OF10_STD: |
742 | case OFPUTIL_P_OF10_STD_TID: | |
743 | return ofputil_protocol_set_tid(OFPUTIL_P_OF10_STD, tid); | |
27527aa0 | 744 | |
85813857 BP |
745 | case OFPUTIL_P_OF10_NXM: |
746 | case OFPUTIL_P_OF10_NXM_TID: | |
747 | return ofputil_protocol_set_tid(OFPUTIL_P_OF10_NXM, tid); | |
27527aa0 | 748 | |
85813857 BP |
749 | case OFPUTIL_P_OF12_OXM: |
750 | return ofputil_protocol_set_tid(OFPUTIL_P_OF12_OXM, tid); | |
44d3732d | 751 | |
2e1ae200 JR |
752 | case OFPUTIL_P_OF13_OXM: |
753 | return ofputil_protocol_set_tid(OFPUTIL_P_OF13_OXM, tid); | |
754 | ||
7fa91113 BP |
755 | default: |
756 | NOT_REACHED(); | |
757 | } | |
758 | } | |
759 | ||
27527aa0 BP |
760 | /* Returns a string form of 'protocol', if a simple form exists (that is, if |
761 | * 'protocol' is either a single protocol or it is a combination of protocols | |
762 | * that have a single abbreviation). Otherwise, returns NULL. */ | |
763 | const char * | |
764 | ofputil_protocol_to_string(enum ofputil_protocol protocol) | |
88ca35ee | 765 | { |
27527aa0 BP |
766 | const struct proto_abbrev *p; |
767 | ||
768 | /* Use a "switch" statement for single-bit names so that we get a compiler | |
769 | * warning if we forget any. */ | |
770 | switch (protocol) { | |
85813857 | 771 | case OFPUTIL_P_OF10_NXM: |
27527aa0 BP |
772 | return "NXM-table_id"; |
773 | ||
85813857 | 774 | case OFPUTIL_P_OF10_NXM_TID: |
27527aa0 BP |
775 | return "NXM+table_id"; |
776 | ||
85813857 | 777 | case OFPUTIL_P_OF10_STD: |
27527aa0 BP |
778 | return "OpenFlow10-table_id"; |
779 | ||
85813857 | 780 | case OFPUTIL_P_OF10_STD_TID: |
27527aa0 | 781 | return "OpenFlow10+table_id"; |
44d3732d | 782 | |
85813857 | 783 | case OFPUTIL_P_OF12_OXM: |
e71bff1b | 784 | return "OXM-OpenFlow12"; |
2e1ae200 JR |
785 | |
786 | case OFPUTIL_P_OF13_OXM: | |
e71bff1b | 787 | return "OXM-OpenFlow13"; |
27527aa0 BP |
788 | } |
789 | ||
790 | /* Check abbreviations. */ | |
791 | for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) { | |
792 | if (protocol == p->protocol) { | |
793 | return p->name; | |
794 | } | |
795 | } | |
796 | ||
797 | return NULL; | |
798 | } | |
799 | ||
800 | /* Returns a string that represents 'protocols'. The return value might be a | |
801 | * comma-separated list if 'protocols' doesn't have a simple name. The return | |
802 | * value is "none" if 'protocols' is 0. | |
803 | * | |
804 | * The caller must free the returned string (with free()). */ | |
805 | char * | |
806 | ofputil_protocols_to_string(enum ofputil_protocol protocols) | |
807 | { | |
808 | struct ds s; | |
809 | ||
810 | assert(!(protocols & ~OFPUTIL_P_ANY)); | |
811 | if (protocols == 0) { | |
812 | return xstrdup("none"); | |
813 | } | |
814 | ||
815 | ds_init(&s); | |
816 | while (protocols) { | |
817 | const struct proto_abbrev *p; | |
818 | int i; | |
819 | ||
820 | if (s.length) { | |
821 | ds_put_char(&s, ','); | |
822 | } | |
823 | ||
824 | for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) { | |
825 | if ((protocols & p->protocol) == p->protocol) { | |
826 | ds_put_cstr(&s, p->name); | |
827 | protocols &= ~p->protocol; | |
828 | goto match; | |
829 | } | |
830 | } | |
831 | ||
832 | for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) { | |
833 | enum ofputil_protocol bit = 1u << i; | |
834 | ||
835 | if (protocols & bit) { | |
836 | ds_put_cstr(&s, ofputil_protocol_to_string(bit)); | |
837 | protocols &= ~bit; | |
838 | goto match; | |
839 | } | |
840 | } | |
841 | NOT_REACHED(); | |
842 | ||
843 | match: ; | |
844 | } | |
845 | return ds_steal_cstr(&s); | |
846 | } | |
847 | ||
848 | static enum ofputil_protocol | |
849 | ofputil_protocol_from_string__(const char *s, size_t n) | |
850 | { | |
851 | const struct proto_abbrev *p; | |
852 | int i; | |
853 | ||
854 | for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) { | |
855 | enum ofputil_protocol bit = 1u << i; | |
856 | const char *name = ofputil_protocol_to_string(bit); | |
857 | ||
858 | if (name && n == strlen(name) && !strncasecmp(s, name, n)) { | |
859 | return bit; | |
860 | } | |
861 | } | |
862 | ||
863 | for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) { | |
864 | if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) { | |
865 | return p->protocol; | |
866 | } | |
867 | } | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
872 | /* Returns the nonempty set of protocols represented by 's', which can be a | |
873 | * single protocol name or abbreviation or a comma-separated list of them. | |
874 | * | |
875 | * Aborts the program with an error message if 's' is invalid. */ | |
876 | enum ofputil_protocol | |
877 | ofputil_protocols_from_string(const char *s) | |
878 | { | |
879 | const char *orig_s = s; | |
880 | enum ofputil_protocol protocols; | |
881 | ||
882 | protocols = 0; | |
883 | while (*s) { | |
884 | enum ofputil_protocol p; | |
885 | size_t n; | |
886 | ||
887 | n = strcspn(s, ","); | |
888 | if (n == 0) { | |
889 | s++; | |
890 | continue; | |
891 | } | |
892 | ||
893 | p = ofputil_protocol_from_string__(s, n); | |
894 | if (!p) { | |
895 | ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s); | |
896 | } | |
897 | protocols |= p; | |
898 | ||
899 | s += n; | |
900 | } | |
901 | ||
902 | if (!protocols) { | |
903 | ovs_fatal(0, "%s: no flow protocol specified", orig_s); | |
904 | } | |
905 | return protocols; | |
88ca35ee BP |
906 | } |
907 | ||
7beaa082 | 908 | static int |
03e1125c SH |
909 | ofputil_version_from_string(const char *s) |
910 | { | |
911 | if (!strcasecmp(s, "OpenFlow10")) { | |
912 | return OFP10_VERSION; | |
913 | } | |
914 | if (!strcasecmp(s, "OpenFlow11")) { | |
915 | return OFP11_VERSION; | |
916 | } | |
917 | if (!strcasecmp(s, "OpenFlow12")) { | |
918 | return OFP12_VERSION; | |
919 | } | |
2e1ae200 JR |
920 | if (!strcasecmp(s, "OpenFlow13")) { |
921 | return OFP13_VERSION; | |
922 | } | |
7beaa082 | 923 | return 0; |
03e1125c SH |
924 | } |
925 | ||
926 | static bool | |
927 | is_delimiter(char c) | |
928 | { | |
929 | return isspace(c) || c == ','; | |
930 | } | |
931 | ||
932 | uint32_t | |
933 | ofputil_versions_from_string(const char *s) | |
934 | { | |
935 | size_t i = 0; | |
936 | uint32_t bitmap = 0; | |
937 | ||
938 | while (s[i]) { | |
939 | size_t j; | |
7beaa082 | 940 | int version; |
03e1125c SH |
941 | char *key; |
942 | ||
943 | if (is_delimiter(s[i])) { | |
944 | i++; | |
945 | continue; | |
946 | } | |
947 | j = 0; | |
948 | while (s[i + j] && !is_delimiter(s[i + j])) { | |
949 | j++; | |
950 | } | |
951 | key = xmemdup0(s + i, j); | |
952 | version = ofputil_version_from_string(key); | |
7beaa082 SH |
953 | if (!version) { |
954 | VLOG_FATAL("Unknown OpenFlow version: \"%s\"", key); | |
955 | } | |
03e1125c SH |
956 | free(key); |
957 | bitmap |= 1u << version; | |
958 | i += j; | |
959 | } | |
960 | ||
961 | return bitmap; | |
962 | } | |
963 | ||
7beaa082 SH |
964 | uint32_t |
965 | ofputil_versions_from_strings(char ** const s, size_t count) | |
966 | { | |
967 | uint32_t bitmap = 0; | |
968 | ||
969 | while (count--) { | |
970 | int version = ofputil_version_from_string(s[count]); | |
971 | if (!version) { | |
972 | VLOG_WARN("Unknown OpenFlow version: \"%s\"", s[count]); | |
973 | } else { | |
974 | bitmap |= 1u << version; | |
975 | } | |
976 | } | |
977 | ||
978 | return bitmap; | |
979 | } | |
980 | ||
03e1125c SH |
981 | const char * |
982 | ofputil_version_to_string(enum ofp_version ofp_version) | |
983 | { | |
984 | switch (ofp_version) { | |
985 | case OFP10_VERSION: | |
986 | return "OpenFlow10"; | |
987 | case OFP11_VERSION: | |
988 | return "OpenFlow11"; | |
989 | case OFP12_VERSION: | |
990 | return "OpenFlow12"; | |
2e1ae200 JR |
991 | case OFP13_VERSION: |
992 | return "OpenFlow13"; | |
03e1125c SH |
993 | default: |
994 | NOT_REACHED(); | |
995 | } | |
996 | } | |
997 | ||
54834960 EJ |
998 | bool |
999 | ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format) | |
1000 | { | |
1001 | switch (packet_in_format) { | |
1002 | case NXPIF_OPENFLOW10: | |
1003 | case NXPIF_NXM: | |
1004 | return true; | |
1005 | } | |
1006 | ||
1007 | return false; | |
1008 | } | |
1009 | ||
1010 | const char * | |
1011 | ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format) | |
1012 | { | |
1013 | switch (packet_in_format) { | |
1014 | case NXPIF_OPENFLOW10: | |
1015 | return "openflow10"; | |
1016 | case NXPIF_NXM: | |
1017 | return "nxm"; | |
1018 | default: | |
1019 | NOT_REACHED(); | |
1020 | } | |
1021 | } | |
1022 | ||
1023 | int | |
1024 | ofputil_packet_in_format_from_string(const char *s) | |
1025 | { | |
1026 | return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10 | |
1027 | : !strcmp(s, "nxm") ? NXPIF_NXM | |
1028 | : -1); | |
1029 | } | |
1030 | ||
88ca35ee BP |
1031 | static bool |
1032 | regs_fully_wildcarded(const struct flow_wildcards *wc) | |
1033 | { | |
1034 | int i; | |
1035 | ||
1036 | for (i = 0; i < FLOW_N_REGS; i++) { | |
26720e24 | 1037 | if (wc->masks.regs[i] != 0) { |
88ca35ee BP |
1038 | return false; |
1039 | } | |
1040 | } | |
1041 | return true; | |
1042 | } | |
1043 | ||
4fe3445a PS |
1044 | static bool |
1045 | tun_parms_fully_wildcarded(const struct flow_wildcards *wc) | |
1046 | { | |
1047 | return (!wc->masks.tunnel.ip_src && | |
1048 | !wc->masks.tunnel.ip_dst && | |
1049 | !wc->masks.tunnel.ip_ttl && | |
1050 | !wc->masks.tunnel.ip_tos && | |
1051 | !wc->masks.tunnel.flags); | |
1052 | } | |
1053 | ||
81a76618 | 1054 | /* Returns a bit-mask of ofputil_protocols that can be used for sending 'match' |
27527aa0 BP |
1055 | * to a switch (e.g. to add or remove a flow). Only NXM can handle tunnel IDs, |
1056 | * registers, or fixing the Ethernet multicast bit. Otherwise, it's better to | |
1057 | * use OpenFlow 1.0 protocol for backward compatibility. */ | |
1058 | enum ofputil_protocol | |
81a76618 | 1059 | ofputil_usable_protocols(const struct match *match) |
8368c090 | 1060 | { |
81a76618 | 1061 | const struct flow_wildcards *wc = &match->wc; |
8368c090 | 1062 | |
72e8bf28 | 1063 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 18); |
a877206f | 1064 | |
4fe3445a PS |
1065 | /* tunnel params other than tun_id can't be sent in a flow_mod */ |
1066 | if (!tun_parms_fully_wildcarded(wc)) { | |
1067 | return OFPUTIL_P_NONE; | |
1068 | } | |
1069 | ||
7cd90356 | 1070 | /* NXM, OXM, and OF1.1 support bitwise matching on ethernet addresses. */ |
26720e24 BP |
1071 | if (!eth_mask_is_exact(wc->masks.dl_src) |
1072 | && !eth_addr_is_zero(wc->masks.dl_src)) { | |
2e1ae200 JR |
1073 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1074 | | OFPUTIL_P_OF13_OXM; | |
73c0ce34 | 1075 | } |
26720e24 BP |
1076 | if (!eth_mask_is_exact(wc->masks.dl_dst) |
1077 | && !eth_addr_is_zero(wc->masks.dl_dst)) { | |
2e1ae200 JR |
1078 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1079 | | OFPUTIL_P_OF13_OXM; | |
8368c090 BP |
1080 | } |
1081 | ||
7cd90356 | 1082 | /* NXM, OXM, and OF1.1+ support matching metadata. */ |
26720e24 | 1083 | if (wc->masks.metadata != htonll(0)) { |
2e1ae200 JR |
1084 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1085 | | OFPUTIL_P_OF13_OXM; | |
969fc56c JS |
1086 | } |
1087 | ||
7cd90356 | 1088 | /* NXM and OXM support matching ARP hardware addresses. */ |
26720e24 BP |
1089 | if (!eth_addr_is_zero(wc->masks.arp_sha) || |
1090 | !eth_addr_is_zero(wc->masks.arp_tha)) { | |
2e1ae200 JR |
1091 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1092 | | OFPUTIL_P_OF13_OXM; | |
bad68a99 JP |
1093 | } |
1094 | ||
7cd90356 | 1095 | /* NXM and OXM support matching IPv6 traffic. */ |
81a76618 | 1096 | if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) { |
2e1ae200 JR |
1097 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1098 | | OFPUTIL_P_OF13_OXM; | |
d31f1109 JP |
1099 | } |
1100 | ||
7cd90356 | 1101 | /* NXM and OXM support matching registers. */ |
8368c090 | 1102 | if (!regs_fully_wildcarded(wc)) { |
2e1ae200 JR |
1103 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1104 | | OFPUTIL_P_OF13_OXM; | |
8368c090 BP |
1105 | } |
1106 | ||
7cd90356 | 1107 | /* NXM and OXM support matching tun_id. */ |
296e07ac | 1108 | if (wc->masks.tunnel.tun_id != htonll(0)) { |
2e1ae200 JR |
1109 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1110 | | OFPUTIL_P_OF13_OXM; | |
8368c090 BP |
1111 | } |
1112 | ||
7cd90356 | 1113 | /* NXM and OXM support matching fragments. */ |
26720e24 | 1114 | if (wc->masks.nw_frag) { |
2e1ae200 JR |
1115 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1116 | | OFPUTIL_P_OF13_OXM; | |
7257b535 BP |
1117 | } |
1118 | ||
7cd90356 | 1119 | /* NXM and OXM support matching IPv6 flow label. */ |
26720e24 | 1120 | if (wc->masks.ipv6_label) { |
2e1ae200 JR |
1121 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1122 | | OFPUTIL_P_OF13_OXM; | |
fa8223b7 JP |
1123 | } |
1124 | ||
7cd90356 | 1125 | /* NXM and OXM support matching IP ECN bits. */ |
26720e24 | 1126 | if (wc->masks.nw_tos & IP_ECN_MASK) { |
2e1ae200 JR |
1127 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1128 | | OFPUTIL_P_OF13_OXM; | |
530180fd JP |
1129 | } |
1130 | ||
7cd90356 | 1131 | /* NXM and OXM support matching IP TTL/hop limit. */ |
26720e24 | 1132 | if (wc->masks.nw_ttl) { |
2e1ae200 JR |
1133 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1134 | | OFPUTIL_P_OF13_OXM; | |
a61680c6 JP |
1135 | } |
1136 | ||
7cd90356 | 1137 | /* NXM and OXM support non-CIDR IPv4 address masks. */ |
26720e24 | 1138 | if (!ip_is_cidr(wc->masks.nw_src) || !ip_is_cidr(wc->masks.nw_dst)) { |
2e1ae200 JR |
1139 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1140 | | OFPUTIL_P_OF13_OXM; | |
c08201d6 BP |
1141 | } |
1142 | ||
7cd90356 | 1143 | /* NXM and OXM support bitwise matching on transport port. */ |
26720e24 BP |
1144 | if ((wc->masks.tp_src && wc->masks.tp_src != htons(UINT16_MAX)) || |
1145 | (wc->masks.tp_dst && wc->masks.tp_dst != htons(UINT16_MAX))) { | |
2e1ae200 JR |
1146 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1147 | | OFPUTIL_P_OF13_OXM; | |
73f33563 BP |
1148 | } |
1149 | ||
8368c090 | 1150 | /* Other formats can express this rule. */ |
27527aa0 BP |
1151 | return OFPUTIL_P_ANY; |
1152 | } | |
1153 | ||
03e1125c SH |
1154 | void |
1155 | ofputil_format_version(struct ds *msg, enum ofp_version version) | |
1156 | { | |
8989046d | 1157 | ds_put_format(msg, "0x%02x", version); |
03e1125c SH |
1158 | } |
1159 | ||
1160 | void | |
1161 | ofputil_format_version_name(struct ds *msg, enum ofp_version version) | |
1162 | { | |
1163 | ds_put_cstr(msg, ofputil_version_to_string(version)); | |
1164 | } | |
1165 | ||
1166 | static void | |
1167 | ofputil_format_version_bitmap__(struct ds *msg, uint32_t bitmap, | |
1168 | void (*format_version)(struct ds *msg, | |
1169 | enum ofp_version)) | |
1170 | { | |
1171 | while (bitmap) { | |
1172 | format_version(msg, raw_ctz(bitmap)); | |
1173 | bitmap = zero_rightmost_1bit(bitmap); | |
1174 | if (bitmap) { | |
1175 | ds_put_cstr(msg, ", "); | |
1176 | } | |
1177 | } | |
1178 | } | |
1179 | ||
1180 | void | |
1181 | ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap) | |
1182 | { | |
1183 | ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version); | |
1184 | } | |
1185 | ||
1186 | void | |
1187 | ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap) | |
1188 | { | |
1189 | ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version_name); | |
1190 | } | |
1191 | ||
de6c85b0 SH |
1192 | static bool |
1193 | ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh, | |
0935de41 | 1194 | uint32_t *allowed_versionsp) |
de6c85b0 SH |
1195 | { |
1196 | uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh; | |
1197 | const ovs_be32 *bitmap = (const ovs_be32 *) (oheh + 1); | |
0935de41 | 1198 | uint32_t allowed_versions; |
de6c85b0 SH |
1199 | |
1200 | if (!bitmap_len || bitmap_len % sizeof *bitmap) { | |
1201 | return false; | |
1202 | } | |
1203 | ||
1204 | /* Only use the first 32-bit element of the bitmap as that is all the | |
1205 | * current implementation supports. Subsequent elements are ignored which | |
1206 | * should have no effect on session negotiation until Open vSwtich supports | |
1207 | * wire-protocol versions greater than 31. | |
1208 | */ | |
0935de41 | 1209 | allowed_versions = ntohl(bitmap[0]); |
de6c85b0 | 1210 | |
0935de41 | 1211 | if (allowed_versions & 1) { |
de6c85b0 SH |
1212 | /* There's no OpenFlow version 0. */ |
1213 | VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow " | |
1214 | "version 0x00"); | |
0935de41 | 1215 | allowed_versions &= ~1u; |
de6c85b0 SH |
1216 | } |
1217 | ||
0935de41 | 1218 | if (!allowed_versions) { |
de6c85b0 SH |
1219 | VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow " |
1220 | "version (between 0x01 and 0x1f)"); | |
1221 | return false; | |
1222 | } | |
1223 | ||
0935de41 | 1224 | *allowed_versionsp = allowed_versions; |
de6c85b0 SH |
1225 | return true; |
1226 | } | |
1227 | ||
1228 | static uint32_t | |
1229 | version_bitmap_from_version(uint8_t ofp_version) | |
1230 | { | |
1231 | return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1; | |
1232 | } | |
1233 | ||
1234 | /* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions' | |
1235 | * the set of OpenFlow versions for which 'oh' announces support. | |
1236 | * | |
1237 | * Because of how OpenFlow defines OFPT_HELLO messages, this function is always | |
1238 | * successful, and thus '*allowed_versions' is always initialized. However, it | |
1239 | * returns false if 'oh' contains some data that could not be fully understood, | |
1240 | * true if 'oh' was completely parsed. */ | |
1241 | bool | |
1242 | ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions) | |
1243 | { | |
1244 | struct ofpbuf msg; | |
1245 | bool ok = true; | |
1246 | ||
1247 | ofpbuf_use_const(&msg, oh, ntohs(oh->length)); | |
1248 | ofpbuf_pull(&msg, sizeof *oh); | |
1249 | ||
1250 | *allowed_versions = version_bitmap_from_version(oh->version); | |
1251 | while (msg.size) { | |
1252 | const struct ofp_hello_elem_header *oheh; | |
1253 | unsigned int len; | |
1254 | ||
1255 | if (msg.size < sizeof *oheh) { | |
1256 | return false; | |
1257 | } | |
1258 | ||
1259 | oheh = msg.data; | |
1260 | len = ntohs(oheh->length); | |
1261 | if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) { | |
1262 | return false; | |
1263 | } | |
1264 | ||
1265 | if (oheh->type != htons(OFPHET_VERSIONBITMAP) | |
1266 | || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) { | |
1267 | ok = false; | |
1268 | } | |
1269 | } | |
1270 | ||
1271 | return ok; | |
1272 | } | |
1273 | ||
1274 | /* Returns true if 'allowed_versions' needs to be accompanied by a version | |
1275 | * bitmap to be correctly expressed in an OFPT_HELLO message. */ | |
1276 | static inline bool | |
1277 | should_send_version_bitmap(uint32_t allowed_versions) | |
1278 | { | |
1279 | return !is_pow2((allowed_versions >> 1) + 1); | |
1280 | } | |
1281 | ||
1282 | /* Create an OFPT_HELLO message that expresses support for the OpenFlow | |
1283 | * versions in the 'allowed_versions' bitmaps and returns the message. */ | |
1284 | struct ofpbuf * | |
1285 | ofputil_encode_hello(uint32_t allowed_versions) | |
1286 | { | |
1287 | enum ofp_version ofp_version; | |
1288 | struct ofpbuf *msg; | |
1289 | ||
1290 | ofp_version = leftmost_1bit_idx(allowed_versions); | |
1291 | msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0); | |
1292 | ||
1293 | if (should_send_version_bitmap(allowed_versions)) { | |
1294 | struct ofp_hello_elem_header *oheh; | |
1295 | uint16_t map_len; | |
1296 | ||
74c4b9c1 | 1297 | map_len = sizeof allowed_versions; |
de6c85b0 SH |
1298 | oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8)); |
1299 | oheh->type = htons(OFPHET_VERSIONBITMAP); | |
1300 | oheh->length = htons(map_len + sizeof *oheh); | |
1301 | *(ovs_be32 *)(oheh + 1) = htonl(allowed_versions); | |
1804d25a BP |
1302 | |
1303 | ofpmsg_update_length(msg); | |
de6c85b0 SH |
1304 | } |
1305 | ||
1306 | return msg; | |
1307 | } | |
1308 | ||
27527aa0 BP |
1309 | /* Returns an OpenFlow message that, sent on an OpenFlow connection whose |
1310 | * protocol is 'current', at least partly transitions the protocol to 'want'. | |
1311 | * Stores in '*next' the protocol that will be in effect on the OpenFlow | |
1312 | * connection if the switch processes the returned message correctly. (If | |
1313 | * '*next != want' then the caller will have to iterate.) | |
1314 | * | |
e43928f2 BP |
1315 | * If 'current == want', or if it is not possible to transition from 'current' |
1316 | * to 'want' (because, for example, 'current' and 'want' use different OpenFlow | |
1317 | * protocol versions), returns NULL and stores 'current' in '*next'. */ | |
27527aa0 BP |
1318 | struct ofpbuf * |
1319 | ofputil_encode_set_protocol(enum ofputil_protocol current, | |
1320 | enum ofputil_protocol want, | |
1321 | enum ofputil_protocol *next) | |
1322 | { | |
e43928f2 | 1323 | enum ofp_version cur_version, want_version; |
27527aa0 BP |
1324 | enum ofputil_protocol cur_base, want_base; |
1325 | bool cur_tid, want_tid; | |
1326 | ||
e43928f2 BP |
1327 | cur_version = ofputil_protocol_to_ofp_version(current); |
1328 | want_version = ofputil_protocol_to_ofp_version(want); | |
1329 | if (cur_version != want_version) { | |
1330 | *next = current; | |
1331 | return NULL; | |
1332 | } | |
1333 | ||
27527aa0 BP |
1334 | cur_base = ofputil_protocol_to_base(current); |
1335 | want_base = ofputil_protocol_to_base(want); | |
1336 | if (cur_base != want_base) { | |
1337 | *next = ofputil_protocol_set_base(current, want_base); | |
1338 | ||
1339 | switch (want_base) { | |
85813857 | 1340 | case OFPUTIL_P_OF10_NXM: |
27527aa0 BP |
1341 | return ofputil_encode_nx_set_flow_format(NXFF_NXM); |
1342 | ||
85813857 | 1343 | case OFPUTIL_P_OF10_STD: |
27527aa0 BP |
1344 | return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10); |
1345 | ||
85813857 | 1346 | case OFPUTIL_P_OF12_OXM: |
2e1ae200 JR |
1347 | case OFPUTIL_P_OF13_OXM: |
1348 | /* There are only one of each OpenFlow 1.2+ protocols and we already | |
1349 | * verified above that we're not trying to change versions. */ | |
310f3699 | 1350 | NOT_REACHED(); |
44d3732d | 1351 | |
85813857 BP |
1352 | case OFPUTIL_P_OF10_STD_TID: |
1353 | case OFPUTIL_P_OF10_NXM_TID: | |
27527aa0 BP |
1354 | NOT_REACHED(); |
1355 | } | |
1356 | } | |
1357 | ||
1358 | cur_tid = (current & OFPUTIL_P_TID) != 0; | |
1359 | want_tid = (want & OFPUTIL_P_TID) != 0; | |
1360 | if (cur_tid != want_tid) { | |
1361 | *next = ofputil_protocol_set_tid(current, want_tid); | |
1362 | return ofputil_make_flow_mod_table_id(want_tid); | |
1363 | } | |
1364 | ||
1365 | assert(current == want); | |
1366 | ||
1367 | *next = current; | |
1368 | return NULL; | |
88ca35ee BP |
1369 | } |
1370 | ||
27527aa0 BP |
1371 | /* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow |
1372 | * format to 'nxff'. */ | |
88ca35ee | 1373 | struct ofpbuf * |
27527aa0 | 1374 | ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff) |
88ca35ee | 1375 | { |
73dbf4ab | 1376 | struct nx_set_flow_format *sff; |
88ca35ee BP |
1377 | struct ofpbuf *msg; |
1378 | ||
27527aa0 BP |
1379 | assert(ofputil_nx_flow_format_is_valid(nxff)); |
1380 | ||
982697a4 BP |
1381 | msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0); |
1382 | sff = ofpbuf_put_zeros(msg, sizeof *sff); | |
27527aa0 | 1383 | sff->format = htonl(nxff); |
88ca35ee BP |
1384 | |
1385 | return msg; | |
1386 | } | |
1387 | ||
27527aa0 BP |
1388 | /* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false |
1389 | * otherwise. */ | |
1390 | enum ofputil_protocol | |
1391 | ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format) | |
1392 | { | |
1393 | switch (flow_format) { | |
1394 | case NXFF_OPENFLOW10: | |
85813857 | 1395 | return OFPUTIL_P_OF10_STD; |
27527aa0 BP |
1396 | |
1397 | case NXFF_NXM: | |
85813857 | 1398 | return OFPUTIL_P_OF10_NXM; |
27527aa0 BP |
1399 | |
1400 | default: | |
1401 | return 0; | |
1402 | } | |
1403 | } | |
1404 | ||
1405 | /* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */ | |
1406 | bool | |
1407 | ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format) | |
1408 | { | |
1409 | return ofputil_nx_flow_format_to_protocol(flow_format) != 0; | |
1410 | } | |
1411 | ||
1412 | /* Returns a string version of 'flow_format', which must be a valid NXFF_* | |
1413 | * value. */ | |
1414 | const char * | |
1415 | ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format) | |
1416 | { | |
1417 | switch (flow_format) { | |
1418 | case NXFF_OPENFLOW10: | |
1419 | return "openflow10"; | |
1420 | case NXFF_NXM: | |
1421 | return "nxm"; | |
1422 | default: | |
1423 | NOT_REACHED(); | |
1424 | } | |
1425 | } | |
1426 | ||
54834960 | 1427 | struct ofpbuf * |
3f4a1939 SH |
1428 | ofputil_make_set_packet_in_format(enum ofp_version ofp_version, |
1429 | enum nx_packet_in_format packet_in_format) | |
54834960 | 1430 | { |
73dbf4ab | 1431 | struct nx_set_packet_in_format *spif; |
54834960 EJ |
1432 | struct ofpbuf *msg; |
1433 | ||
3f4a1939 | 1434 | msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0); |
982697a4 | 1435 | spif = ofpbuf_put_zeros(msg, sizeof *spif); |
54834960 EJ |
1436 | spif->format = htonl(packet_in_format); |
1437 | ||
1438 | return msg; | |
1439 | } | |
1440 | ||
6c1491fb BP |
1441 | /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id |
1442 | * extension on or off (according to 'flow_mod_table_id'). */ | |
1443 | struct ofpbuf * | |
1444 | ofputil_make_flow_mod_table_id(bool flow_mod_table_id) | |
1445 | { | |
73dbf4ab | 1446 | struct nx_flow_mod_table_id *nfmti; |
6c1491fb BP |
1447 | struct ofpbuf *msg; |
1448 | ||
982697a4 BP |
1449 | msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0); |
1450 | nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti); | |
6c1491fb BP |
1451 | nfmti->set = flow_mod_table_id; |
1452 | return msg; | |
1453 | } | |
1454 | ||
7fa91113 BP |
1455 | /* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract |
1456 | * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error | |
1457 | * code. | |
1458 | * | |
f25d0cf3 BP |
1459 | * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions. |
1460 | * The caller must initialize 'ofpacts' and retains ownership of it. | |
1461 | * 'fm->ofpacts' will point into the 'ofpacts' buffer. | |
1462 | * | |
1463 | * Does not validate the flow_mod actions. The caller should do that, with | |
1464 | * ofpacts_check(). */ | |
90bf1e07 | 1465 | enum ofperr |
a9a2da38 | 1466 | ofputil_decode_flow_mod(struct ofputil_flow_mod *fm, |
27527aa0 | 1467 | const struct ofp_header *oh, |
f25d0cf3 BP |
1468 | enum ofputil_protocol protocol, |
1469 | struct ofpbuf *ofpacts) | |
2e4f5fcf | 1470 | { |
6c1491fb | 1471 | uint16_t command; |
2e4f5fcf | 1472 | struct ofpbuf b; |
982697a4 | 1473 | enum ofpraw raw; |
2e4f5fcf | 1474 | |
2013493b | 1475 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
982697a4 | 1476 | raw = ofpraw_pull_assert(&b); |
aa319503 | 1477 | if (raw == OFPRAW_OFPT11_FLOW_MOD) { |
982697a4 | 1478 | /* Standard OpenFlow 1.1 flow_mod. */ |
aa319503 | 1479 | const struct ofp11_flow_mod *ofm; |
90bf1e07 | 1480 | enum ofperr error; |
2e4f5fcf | 1481 | |
bbc32a88 | 1482 | ofm = ofpbuf_pull(&b, sizeof *ofm); |
2e4f5fcf | 1483 | |
81a76618 | 1484 | error = ofputil_pull_ofp11_match(&b, &fm->match, NULL); |
aa319503 BP |
1485 | if (error) { |
1486 | return error; | |
1c0b7503 BP |
1487 | } |
1488 | ||
aa319503 | 1489 | error = ofpacts_pull_openflow11_instructions(&b, b.size, ofpacts); |
f25d0cf3 BP |
1490 | if (error) { |
1491 | return error; | |
1492 | } | |
1493 | ||
2e4f5fcf | 1494 | /* Translate the message. */ |
81a76618 | 1495 | fm->priority = ntohs(ofm->priority); |
aa319503 BP |
1496 | if (ofm->command == OFPFC_ADD) { |
1497 | fm->cookie = htonll(0); | |
1498 | fm->cookie_mask = htonll(0); | |
1499 | fm->new_cookie = ofm->cookie; | |
1500 | } else { | |
aa319503 BP |
1501 | fm->cookie = ofm->cookie; |
1502 | fm->cookie_mask = ofm->cookie_mask; | |
1503 | fm->new_cookie = htonll(UINT64_MAX); | |
1504 | } | |
1505 | fm->command = ofm->command; | |
1506 | fm->table_id = ofm->table_id; | |
2e4f5fcf BP |
1507 | fm->idle_timeout = ntohs(ofm->idle_timeout); |
1508 | fm->hard_timeout = ntohs(ofm->hard_timeout); | |
1509 | fm->buffer_id = ntohl(ofm->buffer_id); | |
aa319503 | 1510 | error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port); |
2e4f5fcf BP |
1511 | if (error) { |
1512 | return error; | |
1513 | } | |
09861c3f JR |
1514 | if ((ofm->command == OFPFC_DELETE |
1515 | || ofm->command == OFPFC_DELETE_STRICT) | |
1516 | && ofm->out_group != htonl(OFPG_ANY)) { | |
fb9515e1 | 1517 | return OFPERR_OFPFMFC_UNKNOWN; |
2e4f5fcf | 1518 | } |
aa319503 BP |
1519 | fm->flags = ntohs(ofm->flags); |
1520 | } else { | |
1521 | if (raw == OFPRAW_OFPT10_FLOW_MOD) { | |
1522 | /* Standard OpenFlow 1.0 flow_mod. */ | |
1523 | const struct ofp10_flow_mod *ofm; | |
aa319503 BP |
1524 | enum ofperr error; |
1525 | ||
1526 | /* Get the ofp10_flow_mod. */ | |
1527 | ofm = ofpbuf_pull(&b, sizeof *ofm); | |
1528 | ||
aa319503 | 1529 | /* Translate the rule. */ |
81a76618 BP |
1530 | ofputil_match_from_ofp10_match(&ofm->match, &fm->match); |
1531 | ofputil_normalize_match(&fm->match); | |
aa319503 BP |
1532 | |
1533 | /* Now get the actions. */ | |
1534 | error = ofpacts_pull_openflow10(&b, b.size, ofpacts); | |
1535 | if (error) { | |
1536 | return error; | |
1537 | } | |
1538 | ||
81a76618 BP |
1539 | /* OpenFlow 1.0 says that exact-match rules have to have the |
1540 | * highest possible priority. */ | |
1541 | fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL) | |
1542 | ? ntohs(ofm->priority) | |
1543 | : UINT16_MAX); | |
1544 | ||
aa319503 BP |
1545 | /* Translate the message. */ |
1546 | command = ntohs(ofm->command); | |
1547 | fm->cookie = htonll(0); | |
1548 | fm->cookie_mask = htonll(0); | |
1549 | fm->new_cookie = ofm->cookie; | |
1550 | fm->idle_timeout = ntohs(ofm->idle_timeout); | |
1551 | fm->hard_timeout = ntohs(ofm->hard_timeout); | |
1552 | fm->buffer_id = ntohl(ofm->buffer_id); | |
1553 | fm->out_port = ntohs(ofm->out_port); | |
1554 | fm->flags = ntohs(ofm->flags); | |
1555 | } else if (raw == OFPRAW_NXT_FLOW_MOD) { | |
1556 | /* Nicira extended flow_mod. */ | |
1557 | const struct nx_flow_mod *nfm; | |
1558 | enum ofperr error; | |
1559 | ||
1560 | /* Dissect the message. */ | |
1561 | nfm = ofpbuf_pull(&b, sizeof *nfm); | |
81a76618 BP |
1562 | error = nx_pull_match(&b, ntohs(nfm->match_len), |
1563 | &fm->match, &fm->cookie, &fm->cookie_mask); | |
aa319503 BP |
1564 | if (error) { |
1565 | return error; | |
1566 | } | |
1567 | error = ofpacts_pull_openflow10(&b, b.size, ofpacts); | |
1568 | if (error) { | |
1569 | return error; | |
1570 | } | |
1571 | ||
1572 | /* Translate the message. */ | |
1573 | command = ntohs(nfm->command); | |
1574 | if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) { | |
1575 | /* Flow additions may only set a new cookie, not match an | |
1576 | * existing cookie. */ | |
1577 | return OFPERR_NXBRC_NXM_INVALID; | |
1578 | } | |
81a76618 | 1579 | fm->priority = ntohs(nfm->priority); |
aa319503 BP |
1580 | fm->new_cookie = nfm->cookie; |
1581 | fm->idle_timeout = ntohs(nfm->idle_timeout); | |
1582 | fm->hard_timeout = ntohs(nfm->hard_timeout); | |
1583 | fm->buffer_id = ntohl(nfm->buffer_id); | |
1584 | fm->out_port = ntohs(nfm->out_port); | |
1585 | fm->flags = ntohs(nfm->flags); | |
1586 | } else { | |
1587 | NOT_REACHED(); | |
1588 | } | |
1589 | ||
2e1ae200 JR |
1590 | if (fm->flags & OFPFF10_EMERG) { |
1591 | /* We do not support the OpenFlow 1.0 emergency flow cache, which | |
1592 | * is not required in OpenFlow 1.0.1 and removed from OpenFlow 1.1. | |
b5bf17dd BP |
1593 | * |
1594 | * OpenFlow 1.0 specifies the error code to use when idle_timeout | |
1595 | * or hard_timeout is nonzero. Otherwise, there is no good error | |
1596 | * code, so just state that the flow table is full. */ | |
1597 | return (fm->hard_timeout || fm->idle_timeout | |
1598 | ? OFPERR_OFPFMFC_BAD_EMERG_TIMEOUT | |
1599 | : OFPERR_OFPFMFC_TABLE_FULL); | |
2e1ae200 JR |
1600 | } |
1601 | ||
aa319503 BP |
1602 | if (protocol & OFPUTIL_P_TID) { |
1603 | fm->command = command & 0xff; | |
1604 | fm->table_id = command >> 8; | |
1605 | } else { | |
1606 | fm->command = command; | |
1607 | fm->table_id = 0xff; | |
e729e793 | 1608 | } |
2e4f5fcf BP |
1609 | } |
1610 | ||
f25d0cf3 BP |
1611 | fm->ofpacts = ofpacts->data; |
1612 | fm->ofpacts_len = ofpacts->size; | |
6c1491fb | 1613 | |
2e4f5fcf BP |
1614 | return 0; |
1615 | } | |
1616 | ||
aa6305ea SH |
1617 | static ovs_be16 |
1618 | ofputil_tid_command(const struct ofputil_flow_mod *fm, | |
1619 | enum ofputil_protocol protocol) | |
1620 | { | |
1621 | return htons(protocol & OFPUTIL_P_TID | |
1622 | ? (fm->command & 0xff) | (fm->table_id << 8) | |
1623 | : fm->command); | |
1624 | } | |
1625 | ||
2e4f5fcf | 1626 | /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to |
6cbe2c0f | 1627 | * 'protocol' and returns the message. */ |
2e4f5fcf | 1628 | struct ofpbuf * |
a9a2da38 | 1629 | ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm, |
27527aa0 | 1630 | enum ofputil_protocol protocol) |
2e4f5fcf | 1631 | { |
2e4f5fcf BP |
1632 | struct ofpbuf *msg; |
1633 | ||
27527aa0 | 1634 | switch (protocol) { |
2e1ae200 JR |
1635 | case OFPUTIL_P_OF12_OXM: |
1636 | case OFPUTIL_P_OF13_OXM: { | |
aa6305ea SH |
1637 | struct ofp11_flow_mod *ofm; |
1638 | ||
2e1ae200 JR |
1639 | msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, |
1640 | ofputil_protocol_to_ofp_version(protocol), | |
aa6305ea SH |
1641 | NXM_TYPICAL_LEN + fm->ofpacts_len); |
1642 | ofm = ofpbuf_put_zeros(msg, sizeof *ofm); | |
a5ff8823 SH |
1643 | if (fm->command == OFPFC_ADD) { |
1644 | ofm->cookie = fm->new_cookie; | |
1645 | } else { | |
1646 | ofm->cookie = fm->cookie; | |
1647 | } | |
aa6305ea SH |
1648 | ofm->cookie_mask = fm->cookie_mask; |
1649 | ofm->table_id = fm->table_id; | |
1650 | ofm->command = fm->command; | |
1651 | ofm->idle_timeout = htons(fm->idle_timeout); | |
1652 | ofm->hard_timeout = htons(fm->hard_timeout); | |
81a76618 | 1653 | ofm->priority = htons(fm->priority); |
aa6305ea SH |
1654 | ofm->buffer_id = htonl(fm->buffer_id); |
1655 | ofm->out_port = ofputil_port_to_ofp11(fm->out_port); | |
1656 | ofm->out_group = htonl(OFPG11_ANY); | |
1657 | ofm->flags = htons(fm->flags); | |
81a76618 | 1658 | oxm_put_match(msg, &fm->match); |
5b289eaf | 1659 | ofpacts_put_openflow11_instructions(fm->ofpacts, fm->ofpacts_len, msg); |
aa6305ea SH |
1660 | break; |
1661 | } | |
1662 | ||
85813857 BP |
1663 | case OFPUTIL_P_OF10_STD: |
1664 | case OFPUTIL_P_OF10_STD_TID: { | |
3f192f23 SH |
1665 | struct ofp10_flow_mod *ofm; |
1666 | ||
982697a4 BP |
1667 | msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION, |
1668 | fm->ofpacts_len); | |
1669 | ofm = ofpbuf_put_zeros(msg, sizeof *ofm); | |
81a76618 | 1670 | ofputil_match_to_ofp10_match(&fm->match, &ofm->match); |
623e1caf | 1671 | ofm->cookie = fm->new_cookie; |
aa6305ea | 1672 | ofm->command = ofputil_tid_command(fm, protocol); |
2e4f5fcf BP |
1673 | ofm->idle_timeout = htons(fm->idle_timeout); |
1674 | ofm->hard_timeout = htons(fm->hard_timeout); | |
81a76618 | 1675 | ofm->priority = htons(fm->priority); |
2e4f5fcf BP |
1676 | ofm->buffer_id = htonl(fm->buffer_id); |
1677 | ofm->out_port = htons(fm->out_port); | |
1678 | ofm->flags = htons(fm->flags); | |
5b289eaf | 1679 | ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg); |
27527aa0 | 1680 | break; |
3f192f23 | 1681 | } |
2e4f5fcf | 1682 | |
85813857 BP |
1683 | case OFPUTIL_P_OF10_NXM: |
1684 | case OFPUTIL_P_OF10_NXM_TID: { | |
3f192f23 SH |
1685 | struct nx_flow_mod *nfm; |
1686 | int match_len; | |
1687 | ||
982697a4 BP |
1688 | msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION, |
1689 | NXM_TYPICAL_LEN + fm->ofpacts_len); | |
1690 | nfm = ofpbuf_put_zeros(msg, sizeof *nfm); | |
aa6305ea | 1691 | nfm->command = ofputil_tid_command(fm, protocol); |
623e1caf | 1692 | nfm->cookie = fm->new_cookie; |
81a76618 | 1693 | match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask); |
982697a4 | 1694 | nfm = msg->l3; |
2e4f5fcf BP |
1695 | nfm->idle_timeout = htons(fm->idle_timeout); |
1696 | nfm->hard_timeout = htons(fm->hard_timeout); | |
81a76618 | 1697 | nfm->priority = htons(fm->priority); |
2e4f5fcf BP |
1698 | nfm->buffer_id = htonl(fm->buffer_id); |
1699 | nfm->out_port = htons(fm->out_port); | |
1700 | nfm->flags = htons(fm->flags); | |
1701 | nfm->match_len = htons(match_len); | |
5b289eaf | 1702 | ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg); |
27527aa0 | 1703 | break; |
3f192f23 | 1704 | } |
27527aa0 BP |
1705 | |
1706 | default: | |
2e4f5fcf BP |
1707 | NOT_REACHED(); |
1708 | } | |
1709 | ||
982697a4 | 1710 | ofpmsg_update_length(msg); |
2e4f5fcf BP |
1711 | return msg; |
1712 | } | |
1713 | ||
27527aa0 BP |
1714 | /* Returns a bitmask with a 1-bit for each protocol that could be used to |
1715 | * send all of the 'n_fm's flow table modification requests in 'fms', and a | |
1716 | * 0-bit for each protocol that is inadequate. | |
1717 | * | |
1718 | * (The return value will have at least one 1-bit.) */ | |
1719 | enum ofputil_protocol | |
1720 | ofputil_flow_mod_usable_protocols(const struct ofputil_flow_mod *fms, | |
1721 | size_t n_fms) | |
1722 | { | |
1723 | enum ofputil_protocol usable_protocols; | |
1724 | size_t i; | |
1725 | ||
1726 | usable_protocols = OFPUTIL_P_ANY; | |
1727 | for (i = 0; i < n_fms; i++) { | |
1728 | const struct ofputil_flow_mod *fm = &fms[i]; | |
1729 | ||
81a76618 | 1730 | usable_protocols &= ofputil_usable_protocols(&fm->match); |
27527aa0 BP |
1731 | if (fm->table_id != 0xff) { |
1732 | usable_protocols &= OFPUTIL_P_TID; | |
1733 | } | |
623e1caf | 1734 | |
7cd90356 | 1735 | /* Matching of the cookie is only supported through NXM or OF1.1+. */ |
623e1caf | 1736 | if (fm->cookie_mask != htonll(0)) { |
2e1ae200 JR |
1737 | usable_protocols &= OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1738 | | OFPUTIL_P_OF13_OXM; | |
27527aa0 BP |
1739 | } |
1740 | } | |
27527aa0 BP |
1741 | |
1742 | return usable_protocols; | |
1743 | } | |
1744 | ||
90bf1e07 | 1745 | static enum ofperr |
0157ad3a SH |
1746 | ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr, |
1747 | const struct ofp10_flow_stats_request *ofsr, | |
1748 | bool aggregate) | |
2e4f5fcf | 1749 | { |
2e4f5fcf | 1750 | fsr->aggregate = aggregate; |
81a76618 | 1751 | ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match); |
2e4f5fcf BP |
1752 | fsr->out_port = ntohs(ofsr->out_port); |
1753 | fsr->table_id = ofsr->table_id; | |
e729e793 | 1754 | fsr->cookie = fsr->cookie_mask = htonll(0); |
2e4f5fcf BP |
1755 | |
1756 | return 0; | |
1757 | } | |
1758 | ||
0157ad3a SH |
1759 | static enum ofperr |
1760 | ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr, | |
1761 | struct ofpbuf *b, bool aggregate) | |
1762 | { | |
1763 | const struct ofp11_flow_stats_request *ofsr; | |
1764 | enum ofperr error; | |
1765 | ||
1766 | ofsr = ofpbuf_pull(b, sizeof *ofsr); | |
1767 | fsr->aggregate = aggregate; | |
1768 | fsr->table_id = ofsr->table_id; | |
1769 | error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port); | |
1770 | if (error) { | |
1771 | return error; | |
1772 | } | |
1773 | if (ofsr->out_group != htonl(OFPG11_ANY)) { | |
fb9515e1 | 1774 | return OFPERR_OFPFMFC_UNKNOWN; |
0157ad3a SH |
1775 | } |
1776 | fsr->cookie = ofsr->cookie; | |
1777 | fsr->cookie_mask = ofsr->cookie_mask; | |
81a76618 | 1778 | error = ofputil_pull_ofp11_match(b, &fsr->match, NULL); |
0157ad3a SH |
1779 | if (error) { |
1780 | return error; | |
1781 | } | |
1782 | ||
1783 | return 0; | |
1784 | } | |
1785 | ||
90bf1e07 | 1786 | static enum ofperr |
81d1ea94 | 1787 | ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr, |
982697a4 | 1788 | struct ofpbuf *b, bool aggregate) |
2e4f5fcf BP |
1789 | { |
1790 | const struct nx_flow_stats_request *nfsr; | |
90bf1e07 | 1791 | enum ofperr error; |
2e4f5fcf | 1792 | |
982697a4 | 1793 | nfsr = ofpbuf_pull(b, sizeof *nfsr); |
81a76618 | 1794 | error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match, |
e729e793 | 1795 | &fsr->cookie, &fsr->cookie_mask); |
2e4f5fcf BP |
1796 | if (error) { |
1797 | return error; | |
1798 | } | |
982697a4 | 1799 | if (b->size) { |
90bf1e07 | 1800 | return OFPERR_OFPBRC_BAD_LEN; |
2e4f5fcf BP |
1801 | } |
1802 | ||
1803 | fsr->aggregate = aggregate; | |
1804 | fsr->out_port = ntohs(nfsr->out_port); | |
1805 | fsr->table_id = nfsr->table_id; | |
1806 | ||
1807 | return 0; | |
1808 | } | |
1809 | ||
1810 | /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE | |
b78f6b77 BP |
1811 | * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if |
1812 | * successful, otherwise an OpenFlow error code. */ | |
90bf1e07 | 1813 | enum ofperr |
81d1ea94 | 1814 | ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr, |
b78f6b77 | 1815 | const struct ofp_header *oh) |
2e4f5fcf | 1816 | { |
982697a4 | 1817 | enum ofpraw raw; |
2e4f5fcf | 1818 | struct ofpbuf b; |
2e4f5fcf | 1819 | |
2013493b | 1820 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
982697a4 BP |
1821 | raw = ofpraw_pull_assert(&b); |
1822 | switch ((int) raw) { | |
cfc23141 | 1823 | case OFPRAW_OFPST10_FLOW_REQUEST: |
0157ad3a | 1824 | return ofputil_decode_ofpst10_flow_request(fsr, b.data, false); |
2e4f5fcf | 1825 | |
617da9cd | 1826 | case OFPRAW_OFPST10_AGGREGATE_REQUEST: |
0157ad3a SH |
1827 | return ofputil_decode_ofpst10_flow_request(fsr, b.data, true); |
1828 | ||
1829 | case OFPRAW_OFPST11_FLOW_REQUEST: | |
1830 | return ofputil_decode_ofpst11_flow_request(fsr, &b, false); | |
2e4f5fcf | 1831 | |
617da9cd SH |
1832 | case OFPRAW_OFPST11_AGGREGATE_REQUEST: |
1833 | return ofputil_decode_ofpst11_flow_request(fsr, &b, true); | |
1834 | ||
982697a4 BP |
1835 | case OFPRAW_NXST_FLOW_REQUEST: |
1836 | return ofputil_decode_nxst_flow_request(fsr, &b, false); | |
2e4f5fcf | 1837 | |
982697a4 BP |
1838 | case OFPRAW_NXST_AGGREGATE_REQUEST: |
1839 | return ofputil_decode_nxst_flow_request(fsr, &b, true); | |
2e4f5fcf BP |
1840 | |
1841 | default: | |
1842 | /* Hey, the caller lied. */ | |
1843 | NOT_REACHED(); | |
1844 | } | |
1845 | } | |
1846 | ||
1847 | /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW, | |
4ffd1b43 | 1848 | * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to |
27527aa0 | 1849 | * 'protocol', and returns the message. */ |
2e4f5fcf | 1850 | struct ofpbuf * |
81d1ea94 | 1851 | ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr, |
27527aa0 | 1852 | enum ofputil_protocol protocol) |
2e4f5fcf BP |
1853 | { |
1854 | struct ofpbuf *msg; | |
982697a4 | 1855 | enum ofpraw raw; |
2e4f5fcf | 1856 | |
27527aa0 | 1857 | switch (protocol) { |
2e1ae200 JR |
1858 | case OFPUTIL_P_OF12_OXM: |
1859 | case OFPUTIL_P_OF13_OXM: { | |
06516c65 SH |
1860 | struct ofp11_flow_stats_request *ofsr; |
1861 | ||
1862 | raw = (fsr->aggregate | |
617da9cd | 1863 | ? OFPRAW_OFPST11_AGGREGATE_REQUEST |
cfc23141 | 1864 | : OFPRAW_OFPST11_FLOW_REQUEST); |
2e1ae200 JR |
1865 | msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol), |
1866 | NXM_TYPICAL_LEN); | |
06516c65 SH |
1867 | ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr); |
1868 | ofsr->table_id = fsr->table_id; | |
1869 | ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port); | |
1870 | ofsr->out_group = htonl(OFPG11_ANY); | |
1871 | ofsr->cookie = fsr->cookie; | |
1872 | ofsr->cookie_mask = fsr->cookie_mask; | |
1873 | oxm_put_match(msg, &fsr->match); | |
1874 | break; | |
1875 | } | |
1876 | ||
85813857 BP |
1877 | case OFPUTIL_P_OF10_STD: |
1878 | case OFPUTIL_P_OF10_STD_TID: { | |
e2b9ac44 | 1879 | struct ofp10_flow_stats_request *ofsr; |
2e4f5fcf | 1880 | |
982697a4 | 1881 | raw = (fsr->aggregate |
617da9cd | 1882 | ? OFPRAW_OFPST10_AGGREGATE_REQUEST |
cfc23141 | 1883 | : OFPRAW_OFPST10_FLOW_REQUEST); |
982697a4 BP |
1884 | msg = ofpraw_alloc(raw, OFP10_VERSION, 0); |
1885 | ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr); | |
81a76618 | 1886 | ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match); |
2e4f5fcf BP |
1887 | ofsr->table_id = fsr->table_id; |
1888 | ofsr->out_port = htons(fsr->out_port); | |
27527aa0 BP |
1889 | break; |
1890 | } | |
1891 | ||
85813857 BP |
1892 | case OFPUTIL_P_OF10_NXM: |
1893 | case OFPUTIL_P_OF10_NXM_TID: { | |
2e4f5fcf BP |
1894 | struct nx_flow_stats_request *nfsr; |
1895 | int match_len; | |
1896 | ||
982697a4 BP |
1897 | raw = (fsr->aggregate |
1898 | ? OFPRAW_NXST_AGGREGATE_REQUEST | |
1899 | : OFPRAW_NXST_FLOW_REQUEST); | |
06516c65 | 1900 | msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN); |
982697a4 | 1901 | ofpbuf_put_zeros(msg, sizeof *nfsr); |
7623f4dd | 1902 | match_len = nx_put_match(msg, &fsr->match, |
e729e793 | 1903 | fsr->cookie, fsr->cookie_mask); |
2e4f5fcf | 1904 | |
982697a4 | 1905 | nfsr = msg->l3; |
2e4f5fcf BP |
1906 | nfsr->out_port = htons(fsr->out_port); |
1907 | nfsr->match_len = htons(match_len); | |
1908 | nfsr->table_id = fsr->table_id; | |
27527aa0 BP |
1909 | break; |
1910 | } | |
1911 | ||
1912 | default: | |
2e4f5fcf BP |
1913 | NOT_REACHED(); |
1914 | } | |
1915 | ||
1916 | return msg; | |
1917 | } | |
d1e2cf21 | 1918 | |
27527aa0 BP |
1919 | /* Returns a bitmask with a 1-bit for each protocol that could be used to |
1920 | * accurately encode 'fsr', and a 0-bit for each protocol that is inadequate. | |
1921 | * | |
1922 | * (The return value will have at least one 1-bit.) */ | |
1923 | enum ofputil_protocol | |
1924 | ofputil_flow_stats_request_usable_protocols( | |
1925 | const struct ofputil_flow_stats_request *fsr) | |
1926 | { | |
1927 | enum ofputil_protocol usable_protocols; | |
1928 | ||
1929 | usable_protocols = ofputil_usable_protocols(&fsr->match); | |
1930 | if (fsr->cookie_mask != htonll(0)) { | |
2e1ae200 JR |
1931 | usable_protocols &= OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM |
1932 | | OFPUTIL_P_OF13_OXM; | |
27527aa0 BP |
1933 | } |
1934 | return usable_protocols; | |
1935 | } | |
1936 | ||
4ffd1b43 | 1937 | /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract |
b78f6b77 | 1938 | * ofputil_flow_stats in 'fs'. |
4ffd1b43 BP |
1939 | * |
1940 | * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single | |
1941 | * OpenFlow message. Calling this function multiple times for a single 'msg' | |
1942 | * iterates through the replies. The caller must initially leave 'msg''s layer | |
1943 | * pointers null and not modify them between calls. | |
1944 | * | |
f27f2134 BP |
1945 | * Most switches don't send the values needed to populate fs->idle_age and |
1946 | * fs->hard_age, so those members will usually be set to 0. If the switch from | |
1947 | * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass | |
1948 | * 'flow_age_extension' as true so that the contents of 'msg' determine the | |
1949 | * 'idle_age' and 'hard_age' members in 'fs'. | |
1950 | * | |
f25d0cf3 BP |
1951 | * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats |
1952 | * reply's actions. The caller must initialize 'ofpacts' and retains ownership | |
1953 | * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer. | |
1954 | * | |
4ffd1b43 BP |
1955 | * Returns 0 if successful, EOF if no replies were left in this 'msg', |
1956 | * otherwise a positive errno value. */ | |
1957 | int | |
1958 | ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs, | |
f27f2134 | 1959 | struct ofpbuf *msg, |
f25d0cf3 BP |
1960 | bool flow_age_extension, |
1961 | struct ofpbuf *ofpacts) | |
4ffd1b43 | 1962 | { |
982697a4 BP |
1963 | enum ofperr error; |
1964 | enum ofpraw raw; | |
4ffd1b43 | 1965 | |
982697a4 BP |
1966 | error = (msg->l2 |
1967 | ? ofpraw_decode(&raw, msg->l2) | |
1968 | : ofpraw_pull(&raw, msg)); | |
1969 | if (error) { | |
1970 | return error; | |
4ffd1b43 BP |
1971 | } |
1972 | ||
1973 | if (!msg->size) { | |
1974 | return EOF; | |
2e1ae200 JR |
1975 | } else if (raw == OFPRAW_OFPST11_FLOW_REPLY |
1976 | || raw == OFPRAW_OFPST13_FLOW_REPLY) { | |
6ec5f0c5 SH |
1977 | const struct ofp11_flow_stats *ofs; |
1978 | size_t length; | |
1979 | uint16_t padded_match_len; | |
1980 | ||
1981 | ofs = ofpbuf_try_pull(msg, sizeof *ofs); | |
1982 | if (!ofs) { | |
1983 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %zu leftover " | |
1984 | "bytes at end", msg->size); | |
1985 | return EINVAL; | |
1986 | } | |
1987 | ||
1988 | length = ntohs(ofs->length); | |
1989 | if (length < sizeof *ofs) { | |
1990 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid " | |
1991 | "length %zu", length); | |
1992 | return EINVAL; | |
1993 | } | |
1994 | ||
81a76618 | 1995 | if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) { |
6ec5f0c5 SH |
1996 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match"); |
1997 | return EINVAL; | |
1998 | } | |
1999 | ||
2000 | if (ofpacts_pull_openflow11_instructions(msg, length - sizeof *ofs - | |
2001 | padded_match_len, ofpacts)) { | |
2002 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions"); | |
2003 | return EINVAL; | |
2004 | } | |
2005 | ||
81a76618 | 2006 | fs->priority = ntohs(ofs->priority); |
6ec5f0c5 SH |
2007 | fs->table_id = ofs->table_id; |
2008 | fs->duration_sec = ntohl(ofs->duration_sec); | |
2009 | fs->duration_nsec = ntohl(ofs->duration_nsec); | |
2010 | fs->idle_timeout = ntohs(ofs->idle_timeout); | |
2011 | fs->hard_timeout = ntohs(ofs->hard_timeout); | |
2e1ae200 | 2012 | fs->flags = (raw == OFPRAW_OFPST13_FLOW_REPLY) ? ntohs(ofs->flags) : 0; |
6ec5f0c5 SH |
2013 | fs->idle_age = -1; |
2014 | fs->hard_age = -1; | |
2015 | fs->cookie = ofs->cookie; | |
2016 | fs->packet_count = ntohll(ofs->packet_count); | |
2017 | fs->byte_count = ntohll(ofs->byte_count); | |
cfc23141 | 2018 | } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) { |
e2b9ac44 | 2019 | const struct ofp10_flow_stats *ofs; |
4ffd1b43 BP |
2020 | size_t length; |
2021 | ||
2022 | ofs = ofpbuf_try_pull(msg, sizeof *ofs); | |
2023 | if (!ofs) { | |
2024 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %zu leftover " | |
2025 | "bytes at end", msg->size); | |
2026 | return EINVAL; | |
2027 | } | |
2028 | ||
2029 | length = ntohs(ofs->length); | |
2030 | if (length < sizeof *ofs) { | |
2031 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid " | |
2032 | "length %zu", length); | |
2033 | return EINVAL; | |
2034 | } | |
2035 | ||
d01c980f | 2036 | if (ofpacts_pull_openflow10(msg, length - sizeof *ofs, ofpacts)) { |
4ffd1b43 BP |
2037 | return EINVAL; |
2038 | } | |
2039 | ||
2040 | fs->cookie = get_32aligned_be64(&ofs->cookie); | |
81a76618 BP |
2041 | ofputil_match_from_ofp10_match(&ofs->match, &fs->match); |
2042 | fs->priority = ntohs(ofs->priority); | |
4ffd1b43 BP |
2043 | fs->table_id = ofs->table_id; |
2044 | fs->duration_sec = ntohl(ofs->duration_sec); | |
2045 | fs->duration_nsec = ntohl(ofs->duration_nsec); | |
2046 | fs->idle_timeout = ntohs(ofs->idle_timeout); | |
2047 | fs->hard_timeout = ntohs(ofs->hard_timeout); | |
f27f2134 BP |
2048 | fs->idle_age = -1; |
2049 | fs->hard_age = -1; | |
4ffd1b43 BP |
2050 | fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count)); |
2051 | fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count)); | |
2e1ae200 | 2052 | fs->flags = 0; |
982697a4 | 2053 | } else if (raw == OFPRAW_NXST_FLOW_REPLY) { |
4ffd1b43 | 2054 | const struct nx_flow_stats *nfs; |
f25d0cf3 | 2055 | size_t match_len, actions_len, length; |
4ffd1b43 BP |
2056 | |
2057 | nfs = ofpbuf_try_pull(msg, sizeof *nfs); | |
2058 | if (!nfs) { | |
2059 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %zu leftover " | |
2060 | "bytes at end", msg->size); | |
2061 | return EINVAL; | |
2062 | } | |
2063 | ||
2064 | length = ntohs(nfs->length); | |
2065 | match_len = ntohs(nfs->match_len); | |
2066 | if (length < sizeof *nfs + ROUND_UP(match_len, 8)) { | |
2067 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%zu " | |
2068 | "claims invalid length %zu", match_len, length); | |
2069 | return EINVAL; | |
2070 | } | |
81a76618 | 2071 | if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) { |
4ffd1b43 BP |
2072 | return EINVAL; |
2073 | } | |
2074 | ||
f25d0cf3 | 2075 | actions_len = length - sizeof *nfs - ROUND_UP(match_len, 8); |
d01c980f | 2076 | if (ofpacts_pull_openflow10(msg, actions_len, ofpacts)) { |
4ffd1b43 BP |
2077 | return EINVAL; |
2078 | } | |
2079 | ||
2080 | fs->cookie = nfs->cookie; | |
2081 | fs->table_id = nfs->table_id; | |
2082 | fs->duration_sec = ntohl(nfs->duration_sec); | |
2083 | fs->duration_nsec = ntohl(nfs->duration_nsec); | |
81a76618 | 2084 | fs->priority = ntohs(nfs->priority); |
4ffd1b43 BP |
2085 | fs->idle_timeout = ntohs(nfs->idle_timeout); |
2086 | fs->hard_timeout = ntohs(nfs->hard_timeout); | |
f27f2134 BP |
2087 | fs->idle_age = -1; |
2088 | fs->hard_age = -1; | |
2089 | if (flow_age_extension) { | |
2090 | if (nfs->idle_age) { | |
2091 | fs->idle_age = ntohs(nfs->idle_age) - 1; | |
2092 | } | |
2093 | if (nfs->hard_age) { | |
2094 | fs->hard_age = ntohs(nfs->hard_age) - 1; | |
2095 | } | |
2096 | } | |
4ffd1b43 BP |
2097 | fs->packet_count = ntohll(nfs->packet_count); |
2098 | fs->byte_count = ntohll(nfs->byte_count); | |
2e1ae200 | 2099 | fs->flags = 0; |
4ffd1b43 BP |
2100 | } else { |
2101 | NOT_REACHED(); | |
2102 | } | |
2103 | ||
f25d0cf3 BP |
2104 | fs->ofpacts = ofpacts->data; |
2105 | fs->ofpacts_len = ofpacts->size; | |
2106 | ||
4ffd1b43 BP |
2107 | return 0; |
2108 | } | |
2109 | ||
5e9d0469 BP |
2110 | /* Returns 'count' unchanged except that UINT64_MAX becomes 0. |
2111 | * | |
2112 | * We use this in situations where OVS internally uses UINT64_MAX to mean | |
2113 | * "value unknown" but OpenFlow 1.0 does not define any unknown value. */ | |
2114 | static uint64_t | |
2115 | unknown_to_zero(uint64_t count) | |
2116 | { | |
2117 | return count != UINT64_MAX ? count : 0; | |
2118 | } | |
2119 | ||
349adfb2 BP |
2120 | /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to |
2121 | * those already present in the list of ofpbufs in 'replies'. 'replies' should | |
2122 | * have been initialized with ofputil_start_stats_reply(). */ | |
2123 | void | |
2124 | ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs, | |
2125 | struct list *replies) | |
2126 | { | |
f25d0cf3 | 2127 | struct ofpbuf *reply = ofpbuf_from_list(list_back(replies)); |
f25d0cf3 | 2128 | size_t start_ofs = reply->size; |
982697a4 | 2129 | enum ofpraw raw; |
349adfb2 | 2130 | |
982697a4 | 2131 | ofpraw_decode_partial(&raw, reply->data, reply->size); |
2e1ae200 | 2132 | if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) { |
22a86f18 SH |
2133 | struct ofp11_flow_stats *ofs; |
2134 | ||
2135 | ofpbuf_put_uninit(reply, sizeof *ofs); | |
81a76618 | 2136 | oxm_put_match(reply, &fs->match); |
22a86f18 SH |
2137 | ofpacts_put_openflow11_instructions(fs->ofpacts, fs->ofpacts_len, |
2138 | reply); | |
2139 | ||
2140 | ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs); | |
2141 | ofs->length = htons(reply->size - start_ofs); | |
2142 | ofs->table_id = fs->table_id; | |
2143 | ofs->pad = 0; | |
2144 | ofs->duration_sec = htonl(fs->duration_sec); | |
2145 | ofs->duration_nsec = htonl(fs->duration_nsec); | |
81a76618 | 2146 | ofs->priority = htons(fs->priority); |
22a86f18 SH |
2147 | ofs->idle_timeout = htons(fs->idle_timeout); |
2148 | ofs->hard_timeout = htons(fs->hard_timeout); | |
2e1ae200 | 2149 | ofs->flags = (raw == OFPRAW_OFPST13_FLOW_REPLY) ? htons(fs->flags) : 0; |
22a86f18 SH |
2150 | memset(ofs->pad2, 0, sizeof ofs->pad2); |
2151 | ofs->cookie = fs->cookie; | |
2152 | ofs->packet_count = htonll(unknown_to_zero(fs->packet_count)); | |
2153 | ofs->byte_count = htonll(unknown_to_zero(fs->byte_count)); | |
2154 | } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) { | |
e2b9ac44 | 2155 | struct ofp10_flow_stats *ofs; |
349adfb2 | 2156 | |
1a59dc2c BP |
2157 | ofpbuf_put_uninit(reply, sizeof *ofs); |
2158 | ofpacts_put_openflow10(fs->ofpacts, fs->ofpacts_len, reply); | |
2159 | ||
2160 | ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs); | |
2161 | ofs->length = htons(reply->size - start_ofs); | |
349adfb2 BP |
2162 | ofs->table_id = fs->table_id; |
2163 | ofs->pad = 0; | |
81a76618 | 2164 | ofputil_match_to_ofp10_match(&fs->match, &ofs->match); |
349adfb2 BP |
2165 | ofs->duration_sec = htonl(fs->duration_sec); |
2166 | ofs->duration_nsec = htonl(fs->duration_nsec); | |
81a76618 | 2167 | ofs->priority = htons(fs->priority); |
349adfb2 BP |
2168 | ofs->idle_timeout = htons(fs->idle_timeout); |
2169 | ofs->hard_timeout = htons(fs->hard_timeout); | |
2170 | memset(ofs->pad2, 0, sizeof ofs->pad2); | |
2171 | put_32aligned_be64(&ofs->cookie, fs->cookie); | |
5e9d0469 BP |
2172 | put_32aligned_be64(&ofs->packet_count, |
2173 | htonll(unknown_to_zero(fs->packet_count))); | |
2174 | put_32aligned_be64(&ofs->byte_count, | |
2175 | htonll(unknown_to_zero(fs->byte_count))); | |
982697a4 | 2176 | } else if (raw == OFPRAW_NXST_FLOW_REPLY) { |
349adfb2 | 2177 | struct nx_flow_stats *nfs; |
1a59dc2c | 2178 | int match_len; |
349adfb2 | 2179 | |
1a59dc2c | 2180 | ofpbuf_put_uninit(reply, sizeof *nfs); |
81a76618 | 2181 | match_len = nx_put_match(reply, &fs->match, 0, 0); |
1a59dc2c BP |
2182 | ofpacts_put_openflow10(fs->ofpacts, fs->ofpacts_len, reply); |
2183 | ||
2184 | nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs); | |
2185 | nfs->length = htons(reply->size - start_ofs); | |
349adfb2 BP |
2186 | nfs->table_id = fs->table_id; |
2187 | nfs->pad = 0; | |
2188 | nfs->duration_sec = htonl(fs->duration_sec); | |
2189 | nfs->duration_nsec = htonl(fs->duration_nsec); | |
81a76618 | 2190 | nfs->priority = htons(fs->priority); |
349adfb2 BP |
2191 | nfs->idle_timeout = htons(fs->idle_timeout); |
2192 | nfs->hard_timeout = htons(fs->hard_timeout); | |
f27f2134 BP |
2193 | nfs->idle_age = htons(fs->idle_age < 0 ? 0 |
2194 | : fs->idle_age < UINT16_MAX ? fs->idle_age + 1 | |
2195 | : UINT16_MAX); | |
2196 | nfs->hard_age = htons(fs->hard_age < 0 ? 0 | |
2197 | : fs->hard_age < UINT16_MAX ? fs->hard_age + 1 | |
2198 | : UINT16_MAX); | |
1a59dc2c | 2199 | nfs->match_len = htons(match_len); |
349adfb2 BP |
2200 | nfs->cookie = fs->cookie; |
2201 | nfs->packet_count = htonll(fs->packet_count); | |
2202 | nfs->byte_count = htonll(fs->byte_count); | |
349adfb2 BP |
2203 | } else { |
2204 | NOT_REACHED(); | |
2205 | } | |
f25d0cf3 | 2206 | |
982697a4 | 2207 | ofpmp_postappend(replies, start_ofs); |
349adfb2 BP |
2208 | } |
2209 | ||
76c93b22 | 2210 | /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or |
a814ba0f | 2211 | * NXST_AGGREGATE reply matching 'request', and returns the message. */ |
76c93b22 BP |
2212 | struct ofpbuf * |
2213 | ofputil_encode_aggregate_stats_reply( | |
2214 | const struct ofputil_aggregate_stats *stats, | |
982697a4 | 2215 | const struct ofp_header *request) |
76c93b22 | 2216 | { |
a814ba0f BP |
2217 | struct ofp_aggregate_stats_reply *asr; |
2218 | uint64_t packet_count; | |
2219 | uint64_t byte_count; | |
76c93b22 | 2220 | struct ofpbuf *msg; |
982697a4 | 2221 | enum ofpraw raw; |
76c93b22 | 2222 | |
982697a4 | 2223 | ofpraw_decode(&raw, request); |
617da9cd | 2224 | if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) { |
a814ba0f BP |
2225 | packet_count = unknown_to_zero(stats->packet_count); |
2226 | byte_count = unknown_to_zero(stats->byte_count); | |
76c93b22 | 2227 | } else { |
a814ba0f BP |
2228 | packet_count = stats->packet_count; |
2229 | byte_count = stats->byte_count; | |
76c93b22 BP |
2230 | } |
2231 | ||
a814ba0f BP |
2232 | msg = ofpraw_alloc_stats_reply(request, 0); |
2233 | asr = ofpbuf_put_zeros(msg, sizeof *asr); | |
2234 | put_32aligned_be64(&asr->packet_count, htonll(packet_count)); | |
2235 | put_32aligned_be64(&asr->byte_count, htonll(byte_count)); | |
2236 | asr->flow_count = htonl(stats->flow_count); | |
2237 | ||
76c93b22 BP |
2238 | return msg; |
2239 | } | |
2240 | ||
982697a4 BP |
2241 | enum ofperr |
2242 | ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats, | |
2243 | const struct ofp_header *reply) | |
2244 | { | |
a814ba0f | 2245 | struct ofp_aggregate_stats_reply *asr; |
982697a4 | 2246 | struct ofpbuf msg; |
982697a4 BP |
2247 | |
2248 | ofpbuf_use_const(&msg, reply, ntohs(reply->length)); | |
a814ba0f BP |
2249 | ofpraw_pull_assert(&msg); |
2250 | ||
2251 | asr = msg.l3; | |
2252 | stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count)); | |
2253 | stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count)); | |
2254 | stats->flow_count = ntohl(asr->flow_count); | |
982697a4 BP |
2255 | |
2256 | return 0; | |
2257 | } | |
2258 | ||
b78f6b77 BP |
2259 | /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an |
2260 | * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise | |
2261 | * an OpenFlow error code. */ | |
90bf1e07 | 2262 | enum ofperr |
9b045a0c | 2263 | ofputil_decode_flow_removed(struct ofputil_flow_removed *fr, |
b78f6b77 | 2264 | const struct ofp_header *oh) |
9b045a0c | 2265 | { |
982697a4 BP |
2266 | enum ofpraw raw; |
2267 | struct ofpbuf b; | |
9b045a0c | 2268 | |
982697a4 BP |
2269 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2270 | raw = ofpraw_pull_assert(&b); | |
eefbf181 SH |
2271 | if (raw == OFPRAW_OFPT11_FLOW_REMOVED) { |
2272 | const struct ofp12_flow_removed *ofr; | |
2273 | enum ofperr error; | |
2274 | ||
2275 | ofr = ofpbuf_pull(&b, sizeof *ofr); | |
2276 | ||
81a76618 | 2277 | error = ofputil_pull_ofp11_match(&b, &fr->match, NULL); |
eefbf181 SH |
2278 | if (error) { |
2279 | return error; | |
2280 | } | |
2281 | ||
81a76618 | 2282 | fr->priority = ntohs(ofr->priority); |
eefbf181 SH |
2283 | fr->cookie = ofr->cookie; |
2284 | fr->reason = ofr->reason; | |
95216219 | 2285 | fr->table_id = ofr->table_id; |
eefbf181 SH |
2286 | fr->duration_sec = ntohl(ofr->duration_sec); |
2287 | fr->duration_nsec = ntohl(ofr->duration_nsec); | |
2288 | fr->idle_timeout = ntohs(ofr->idle_timeout); | |
2289 | fr->hard_timeout = ntohs(ofr->hard_timeout); | |
2290 | fr->packet_count = ntohll(ofr->packet_count); | |
2291 | fr->byte_count = ntohll(ofr->byte_count); | |
2292 | } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) { | |
31a9e63f | 2293 | const struct ofp10_flow_removed *ofr; |
9b045a0c | 2294 | |
982697a4 BP |
2295 | ofr = ofpbuf_pull(&b, sizeof *ofr); |
2296 | ||
81a76618 BP |
2297 | ofputil_match_from_ofp10_match(&ofr->match, &fr->match); |
2298 | fr->priority = ntohs(ofr->priority); | |
9b045a0c BP |
2299 | fr->cookie = ofr->cookie; |
2300 | fr->reason = ofr->reason; | |
95216219 | 2301 | fr->table_id = 255; |
9b045a0c BP |
2302 | fr->duration_sec = ntohl(ofr->duration_sec); |
2303 | fr->duration_nsec = ntohl(ofr->duration_nsec); | |
2304 | fr->idle_timeout = ntohs(ofr->idle_timeout); | |
fa2bad0f | 2305 | fr->hard_timeout = 0; |
9b045a0c BP |
2306 | fr->packet_count = ntohll(ofr->packet_count); |
2307 | fr->byte_count = ntohll(ofr->byte_count); | |
982697a4 | 2308 | } else if (raw == OFPRAW_NXT_FLOW_REMOVED) { |
9b045a0c | 2309 | struct nx_flow_removed *nfr; |
c2725b60 | 2310 | enum ofperr error; |
9b045a0c | 2311 | |
9b045a0c | 2312 | nfr = ofpbuf_pull(&b, sizeof *nfr); |
81a76618 BP |
2313 | error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match, |
2314 | NULL, NULL); | |
9b045a0c BP |
2315 | if (error) { |
2316 | return error; | |
2317 | } | |
2318 | if (b.size) { | |
90bf1e07 | 2319 | return OFPERR_OFPBRC_BAD_LEN; |
9b045a0c BP |
2320 | } |
2321 | ||
81a76618 | 2322 | fr->priority = ntohs(nfr->priority); |
9b045a0c BP |
2323 | fr->cookie = nfr->cookie; |
2324 | fr->reason = nfr->reason; | |
95216219 | 2325 | fr->table_id = 255; |
9b045a0c BP |
2326 | fr->duration_sec = ntohl(nfr->duration_sec); |
2327 | fr->duration_nsec = ntohl(nfr->duration_nsec); | |
2328 | fr->idle_timeout = ntohs(nfr->idle_timeout); | |
fa2bad0f | 2329 | fr->hard_timeout = 0; |
9b045a0c BP |
2330 | fr->packet_count = ntohll(nfr->packet_count); |
2331 | fr->byte_count = ntohll(nfr->byte_count); | |
2332 | } else { | |
2333 | NOT_REACHED(); | |
2334 | } | |
2335 | ||
2336 | return 0; | |
2337 | } | |
2338 | ||
588cd7b5 | 2339 | /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or |
27527aa0 | 2340 | * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the |
588cd7b5 BP |
2341 | * message. */ |
2342 | struct ofpbuf * | |
2343 | ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr, | |
27527aa0 | 2344 | enum ofputil_protocol protocol) |
588cd7b5 BP |
2345 | { |
2346 | struct ofpbuf *msg; | |
2347 | ||
27527aa0 | 2348 | switch (protocol) { |
2e1ae200 JR |
2349 | case OFPUTIL_P_OF12_OXM: |
2350 | case OFPUTIL_P_OF13_OXM: { | |
83974732 SH |
2351 | struct ofp12_flow_removed *ofr; |
2352 | ||
2353 | msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED, | |
2354 | ofputil_protocol_to_ofp_version(protocol), | |
2355 | htonl(0), NXM_TYPICAL_LEN); | |
2356 | ofr = ofpbuf_put_zeros(msg, sizeof *ofr); | |
2357 | ofr->cookie = fr->cookie; | |
81a76618 | 2358 | ofr->priority = htons(fr->priority); |
83974732 | 2359 | ofr->reason = fr->reason; |
95216219 | 2360 | ofr->table_id = fr->table_id; |
83974732 SH |
2361 | ofr->duration_sec = htonl(fr->duration_sec); |
2362 | ofr->duration_nsec = htonl(fr->duration_nsec); | |
2363 | ofr->idle_timeout = htons(fr->idle_timeout); | |
fa2bad0f | 2364 | ofr->hard_timeout = htons(fr->hard_timeout); |
83974732 SH |
2365 | ofr->packet_count = htonll(fr->packet_count); |
2366 | ofr->byte_count = htonll(fr->byte_count); | |
81a76618 | 2367 | oxm_put_match(msg, &fr->match); |
83974732 SH |
2368 | break; |
2369 | } | |
2370 | ||
85813857 BP |
2371 | case OFPUTIL_P_OF10_STD: |
2372 | case OFPUTIL_P_OF10_STD_TID: { | |
31a9e63f | 2373 | struct ofp10_flow_removed *ofr; |
588cd7b5 | 2374 | |
982697a4 BP |
2375 | msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION, |
2376 | htonl(0), 0); | |
2377 | ofr = ofpbuf_put_zeros(msg, sizeof *ofr); | |
81a76618 | 2378 | ofputil_match_to_ofp10_match(&fr->match, &ofr->match); |
7fb563b9 | 2379 | ofr->cookie = fr->cookie; |
81a76618 | 2380 | ofr->priority = htons(fr->priority); |
588cd7b5 BP |
2381 | ofr->reason = fr->reason; |
2382 | ofr->duration_sec = htonl(fr->duration_sec); | |
2383 | ofr->duration_nsec = htonl(fr->duration_nsec); | |
2384 | ofr->idle_timeout = htons(fr->idle_timeout); | |
5e9d0469 BP |
2385 | ofr->packet_count = htonll(unknown_to_zero(fr->packet_count)); |
2386 | ofr->byte_count = htonll(unknown_to_zero(fr->byte_count)); | |
27527aa0 BP |
2387 | break; |
2388 | } | |
2389 | ||
85813857 BP |
2390 | case OFPUTIL_P_OF10_NXM: |
2391 | case OFPUTIL_P_OF10_NXM_TID: { | |
588cd7b5 BP |
2392 | struct nx_flow_removed *nfr; |
2393 | int match_len; | |
2394 | ||
982697a4 BP |
2395 | msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION, |
2396 | htonl(0), NXM_TYPICAL_LEN); | |
2397 | nfr = ofpbuf_put_zeros(msg, sizeof *nfr); | |
81a76618 | 2398 | match_len = nx_put_match(msg, &fr->match, 0, 0); |
588cd7b5 | 2399 | |
982697a4 | 2400 | nfr = msg->l3; |
588cd7b5 | 2401 | nfr->cookie = fr->cookie; |
81a76618 | 2402 | nfr->priority = htons(fr->priority); |
588cd7b5 BP |
2403 | nfr->reason = fr->reason; |
2404 | nfr->duration_sec = htonl(fr->duration_sec); | |
2405 | nfr->duration_nsec = htonl(fr->duration_nsec); | |
2406 | nfr->idle_timeout = htons(fr->idle_timeout); | |
2407 | nfr->match_len = htons(match_len); | |
2408 | nfr->packet_count = htonll(fr->packet_count); | |
2409 | nfr->byte_count = htonll(fr->byte_count); | |
27527aa0 BP |
2410 | break; |
2411 | } | |
2412 | ||
2413 | default: | |
588cd7b5 BP |
2414 | NOT_REACHED(); |
2415 | } | |
2416 | ||
2417 | return msg; | |
2418 | } | |
2419 | ||
7cfb9651 SH |
2420 | static void |
2421 | ofputil_decode_packet_in_finish(struct ofputil_packet_in *pin, | |
81a76618 | 2422 | struct match *match, struct ofpbuf *b) |
7cfb9651 SH |
2423 | { |
2424 | pin->packet = b->data; | |
2425 | pin->packet_len = b->size; | |
2426 | ||
81a76618 | 2427 | pin->fmd.in_port = match->flow.in_port; |
296e07ac | 2428 | pin->fmd.tun_id = match->flow.tunnel.tun_id; |
81a76618 BP |
2429 | pin->fmd.metadata = match->flow.metadata; |
2430 | memcpy(pin->fmd.regs, match->flow.regs, sizeof pin->fmd.regs); | |
7cfb9651 SH |
2431 | } |
2432 | ||
f7cc6bd8 | 2433 | enum ofperr |
65120a8a EJ |
2434 | ofputil_decode_packet_in(struct ofputil_packet_in *pin, |
2435 | const struct ofp_header *oh) | |
2436 | { | |
982697a4 BP |
2437 | enum ofpraw raw; |
2438 | struct ofpbuf b; | |
65120a8a | 2439 | |
65120a8a EJ |
2440 | memset(pin, 0, sizeof *pin); |
2441 | ||
982697a4 BP |
2442 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2443 | raw = ofpraw_pull_assert(&b); | |
2e1ae200 JR |
2444 | if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) { |
2445 | const struct ofp13_packet_in *opi; | |
81a76618 | 2446 | struct match match; |
7cfb9651 | 2447 | int error; |
2e1ae200 JR |
2448 | size_t packet_in_size; |
2449 | ||
2450 | if (raw == OFPRAW_OFPT12_PACKET_IN) { | |
2451 | packet_in_size = sizeof (struct ofp12_packet_in); | |
2452 | } else { | |
2453 | packet_in_size = sizeof (struct ofp13_packet_in); | |
2454 | } | |
7cfb9651 | 2455 | |
2e1ae200 | 2456 | opi = ofpbuf_pull(&b, packet_in_size); |
81a76618 | 2457 | error = oxm_pull_match_loose(&b, &match); |
7cfb9651 SH |
2458 | if (error) { |
2459 | return error; | |
2460 | } | |
2461 | ||
2462 | if (!ofpbuf_try_pull(&b, 2)) { | |
2463 | return OFPERR_OFPBRC_BAD_LEN; | |
2464 | } | |
2465 | ||
2e1ae200 JR |
2466 | pin->reason = opi->pi.reason; |
2467 | pin->table_id = opi->pi.table_id; | |
2468 | pin->buffer_id = ntohl(opi->pi.buffer_id); | |
2469 | pin->total_len = ntohs(opi->pi.total_len); | |
7cfb9651 | 2470 | |
2e1ae200 JR |
2471 | if (raw == OFPRAW_OFPT13_PACKET_IN) { |
2472 | pin->cookie = opi->cookie; | |
2473 | } | |
7cfb9651 | 2474 | |
81a76618 | 2475 | ofputil_decode_packet_in_finish(pin, &match, &b); |
7cfb9651 | 2476 | } else if (raw == OFPRAW_OFPT10_PACKET_IN) { |
31a9e63f | 2477 | const struct ofp10_packet_in *opi; |
982697a4 | 2478 | |
31a9e63f | 2479 | opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data)); |
65120a8a EJ |
2480 | |
2481 | pin->packet = opi->data; | |
982697a4 | 2482 | pin->packet_len = b.size; |
65120a8a | 2483 | |
5d6c3af0 | 2484 | pin->fmd.in_port = ntohs(opi->in_port); |
65120a8a EJ |
2485 | pin->reason = opi->reason; |
2486 | pin->buffer_id = ntohl(opi->buffer_id); | |
2487 | pin->total_len = ntohs(opi->total_len); | |
982697a4 | 2488 | } else if (raw == OFPRAW_NXT_PACKET_IN) { |
73dbf4ab | 2489 | const struct nx_packet_in *npi; |
81a76618 | 2490 | struct match match; |
54834960 EJ |
2491 | int error; |
2492 | ||
54834960 | 2493 | npi = ofpbuf_pull(&b, sizeof *npi); |
81a76618 | 2494 | error = nx_pull_match_loose(&b, ntohs(npi->match_len), &match, NULL, |
b5ae8913 | 2495 | NULL); |
54834960 EJ |
2496 | if (error) { |
2497 | return error; | |
2498 | } | |
2499 | ||
2500 | if (!ofpbuf_try_pull(&b, 2)) { | |
90bf1e07 | 2501 | return OFPERR_OFPBRC_BAD_LEN; |
54834960 EJ |
2502 | } |
2503 | ||
54834960 EJ |
2504 | pin->reason = npi->reason; |
2505 | pin->table_id = npi->table_id; | |
2506 | pin->cookie = npi->cookie; | |
2507 | ||
54834960 EJ |
2508 | pin->buffer_id = ntohl(npi->buffer_id); |
2509 | pin->total_len = ntohs(npi->total_len); | |
7cfb9651 | 2510 | |
81a76618 | 2511 | ofputil_decode_packet_in_finish(pin, &match, &b); |
65120a8a EJ |
2512 | } else { |
2513 | NOT_REACHED(); | |
2514 | } | |
2515 | ||
2516 | return 0; | |
2517 | } | |
2518 | ||
d94240ec | 2519 | static void |
81a76618 BP |
2520 | ofputil_packet_in_to_match(const struct ofputil_packet_in *pin, |
2521 | struct match *match) | |
d94240ec SH |
2522 | { |
2523 | int i; | |
2524 | ||
81a76618 | 2525 | match_init_catchall(match); |
42edbe39 | 2526 | if (pin->fmd.tun_id != htonll(0)) { |
81a76618 | 2527 | match_set_tun_id(match, pin->fmd.tun_id); |
42edbe39 BP |
2528 | } |
2529 | if (pin->fmd.metadata != htonll(0)) { | |
81a76618 | 2530 | match_set_metadata(match, pin->fmd.metadata); |
42edbe39 | 2531 | } |
d94240ec SH |
2532 | |
2533 | for (i = 0; i < FLOW_N_REGS; i++) { | |
42edbe39 | 2534 | if (pin->fmd.regs[i]) { |
81a76618 | 2535 | match_set_reg(match, i, pin->fmd.regs[i]); |
42edbe39 | 2536 | } |
d94240ec SH |
2537 | } |
2538 | ||
81a76618 | 2539 | match_set_in_port(match, pin->fmd.in_port); |
d94240ec SH |
2540 | } |
2541 | ||
54834960 EJ |
2542 | /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message |
2543 | * in the format specified by 'packet_in_format'. */ | |
ebb57021 | 2544 | struct ofpbuf * |
54834960 | 2545 | ofputil_encode_packet_in(const struct ofputil_packet_in *pin, |
d94240ec | 2546 | enum ofputil_protocol protocol, |
54834960 | 2547 | enum nx_packet_in_format packet_in_format) |
ebb57021 | 2548 | { |
54834960 EJ |
2549 | size_t send_len = MIN(pin->send_len, pin->packet_len); |
2550 | struct ofpbuf *packet; | |
ebb57021 BP |
2551 | |
2552 | /* Add OFPT_PACKET_IN. */ | |
2e1ae200 JR |
2553 | if (protocol == OFPUTIL_P_OF13_OXM || protocol == OFPUTIL_P_OF12_OXM) { |
2554 | struct ofp13_packet_in *opi; | |
81a76618 | 2555 | struct match match; |
2e1ae200 JR |
2556 | enum ofpraw packet_in_raw; |
2557 | enum ofp_version packet_in_version; | |
2558 | size_t packet_in_size; | |
2559 | ||
2560 | if (protocol == OFPUTIL_P_OF12_OXM) { | |
2561 | packet_in_raw = OFPRAW_OFPT12_PACKET_IN; | |
2562 | packet_in_version = OFP12_VERSION; | |
2563 | packet_in_size = sizeof (struct ofp12_packet_in); | |
2564 | } else { | |
2565 | packet_in_raw = OFPRAW_OFPT13_PACKET_IN; | |
2566 | packet_in_version = OFP13_VERSION; | |
2567 | packet_in_size = sizeof (struct ofp13_packet_in); | |
2568 | } | |
d94240ec | 2569 | |
81a76618 | 2570 | ofputil_packet_in_to_match(pin, &match); |
d94240ec SH |
2571 | |
2572 | /* The final argument is just an estimate of the space required. */ | |
2e1ae200 | 2573 | packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version, |
d94240ec SH |
2574 | htonl(0), (sizeof(struct flow_metadata) * 2 |
2575 | + 2 + send_len)); | |
2e1ae200 | 2576 | ofpbuf_put_zeros(packet, packet_in_size); |
81a76618 | 2577 | oxm_put_match(packet, &match); |
d94240ec SH |
2578 | ofpbuf_put_zeros(packet, 2); |
2579 | ofpbuf_put(packet, pin->packet, send_len); | |
2580 | ||
2581 | opi = packet->l3; | |
2e1ae200 JR |
2582 | opi->pi.buffer_id = htonl(pin->buffer_id); |
2583 | opi->pi.total_len = htons(pin->total_len); | |
2584 | opi->pi.reason = pin->reason; | |
2585 | opi->pi.table_id = pin->table_id; | |
2586 | if (protocol == OFPUTIL_P_OF13_OXM) { | |
2587 | opi->cookie = pin->cookie; | |
2588 | } | |
2589 | } else if (packet_in_format == NXPIF_OPENFLOW10) { | |
31a9e63f | 2590 | struct ofp10_packet_in *opi; |
54834960 | 2591 | |
982697a4 BP |
2592 | packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION, |
2593 | htonl(0), send_len); | |
31a9e63f | 2594 | opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data)); |
54834960 EJ |
2595 | opi->total_len = htons(pin->total_len); |
2596 | opi->in_port = htons(pin->fmd.in_port); | |
2597 | opi->reason = pin->reason; | |
2598 | opi->buffer_id = htonl(pin->buffer_id); | |
2599 | ||
2600 | ofpbuf_put(packet, pin->packet, send_len); | |
2601 | } else if (packet_in_format == NXPIF_NXM) { | |
73dbf4ab | 2602 | struct nx_packet_in *npi; |
81a76618 | 2603 | struct match match; |
54834960 | 2604 | size_t match_len; |
54834960 | 2605 | |
81a76618 | 2606 | ofputil_packet_in_to_match(pin, &match); |
54834960 | 2607 | |
982697a4 BP |
2608 | /* The final argument is just an estimate of the space required. */ |
2609 | packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION, | |
2610 | htonl(0), (sizeof(struct flow_metadata) * 2 | |
2611 | + 2 + send_len)); | |
54834960 | 2612 | ofpbuf_put_zeros(packet, sizeof *npi); |
81a76618 | 2613 | match_len = nx_put_match(packet, &match, 0, 0); |
54834960 EJ |
2614 | ofpbuf_put_zeros(packet, 2); |
2615 | ofpbuf_put(packet, pin->packet, send_len); | |
2616 | ||
982697a4 | 2617 | npi = packet->l3; |
54834960 EJ |
2618 | npi->buffer_id = htonl(pin->buffer_id); |
2619 | npi->total_len = htons(pin->total_len); | |
2620 | npi->reason = pin->reason; | |
2621 | npi->table_id = pin->table_id; | |
2622 | npi->cookie = pin->cookie; | |
2623 | npi->match_len = htons(match_len); | |
2624 | } else { | |
2625 | NOT_REACHED(); | |
2626 | } | |
982697a4 | 2627 | ofpmsg_update_length(packet); |
54834960 EJ |
2628 | |
2629 | return packet; | |
ebb57021 BP |
2630 | } |
2631 | ||
7c1a76a4 BP |
2632 | const char * |
2633 | ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason) | |
2634 | { | |
2635 | static char s[INT_STRLEN(int) + 1]; | |
2636 | ||
2637 | switch (reason) { | |
2638 | case OFPR_NO_MATCH: | |
2639 | return "no_match"; | |
2640 | case OFPR_ACTION: | |
2641 | return "action"; | |
2642 | case OFPR_INVALID_TTL: | |
2643 | return "invalid_ttl"; | |
2644 | ||
2645 | case OFPR_N_REASONS: | |
2646 | default: | |
2647 | sprintf(s, "%d", (int) reason); | |
2648 | return s; | |
2649 | } | |
2650 | } | |
2651 | ||
2652 | bool | |
2653 | ofputil_packet_in_reason_from_string(const char *s, | |
2654 | enum ofp_packet_in_reason *reason) | |
2655 | { | |
2656 | int i; | |
2657 | ||
2658 | for (i = 0; i < OFPR_N_REASONS; i++) { | |
2659 | if (!strcasecmp(s, ofputil_packet_in_reason_to_string(i))) { | |
2660 | *reason = i; | |
2661 | return true; | |
2662 | } | |
2663 | } | |
2664 | return false; | |
2665 | } | |
2666 | ||
f25d0cf3 BP |
2667 | /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in |
2668 | * 'po'. | |
2669 | * | |
2670 | * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out | |
2671 | * message's actions. The caller must initialize 'ofpacts' and retains | |
2672 | * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer. | |
2673 | * | |
2674 | * Returns 0 if successful, otherwise an OFPERR_* value. */ | |
c6a93eb7 BP |
2675 | enum ofperr |
2676 | ofputil_decode_packet_out(struct ofputil_packet_out *po, | |
982697a4 | 2677 | const struct ofp_header *oh, |
f25d0cf3 | 2678 | struct ofpbuf *ofpacts) |
c6a93eb7 | 2679 | { |
982697a4 | 2680 | enum ofpraw raw; |
c6a93eb7 BP |
2681 | struct ofpbuf b; |
2682 | ||
982697a4 BP |
2683 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2684 | raw = ofpraw_pull_assert(&b); | |
982697a4 | 2685 | |
eb5ee596 SH |
2686 | if (raw == OFPRAW_OFPT11_PACKET_OUT) { |
2687 | enum ofperr error; | |
2688 | const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo); | |
2689 | ||
2690 | po->buffer_id = ntohl(opo->buffer_id); | |
2691 | error = ofputil_port_from_ofp11(opo->in_port, &po->in_port); | |
2692 | if (error) { | |
2693 | return error; | |
2694 | } | |
2695 | ||
2696 | error = ofpacts_pull_openflow11_actions(&b, ntohs(opo->actions_len), | |
2697 | ofpacts); | |
2698 | if (error) { | |
2699 | return error; | |
2700 | } | |
eb5ee596 | 2701 | } else if (raw == OFPRAW_OFPT10_PACKET_OUT) { |
8a6bc7cd | 2702 | enum ofperr error; |
31a9e63f | 2703 | const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo); |
8a6bc7cd SH |
2704 | |
2705 | po->buffer_id = ntohl(opo->buffer_id); | |
2706 | po->in_port = ntohs(opo->in_port); | |
2707 | ||
2708 | error = ofpacts_pull_openflow10(&b, ntohs(opo->actions_len), ofpacts); | |
2709 | if (error) { | |
2710 | return error; | |
2711 | } | |
2712 | } else { | |
2713 | NOT_REACHED(); | |
2714 | } | |
2715 | ||
c6a93eb7 | 2716 | if (po->in_port >= OFPP_MAX && po->in_port != OFPP_LOCAL |
751c7785 | 2717 | && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) { |
c6a93eb7 BP |
2718 | VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16, |
2719 | po->in_port); | |
2e1bfcb6 | 2720 | return OFPERR_OFPBRC_BAD_PORT; |
c6a93eb7 BP |
2721 | } |
2722 | ||
f25d0cf3 BP |
2723 | po->ofpacts = ofpacts->data; |
2724 | po->ofpacts_len = ofpacts->size; | |
c6a93eb7 BP |
2725 | |
2726 | if (po->buffer_id == UINT32_MAX) { | |
2727 | po->packet = b.data; | |
2728 | po->packet_len = b.size; | |
2729 | } else { | |
2730 | po->packet = NULL; | |
2731 | po->packet_len = 0; | |
2732 | } | |
2733 | ||
2734 | return 0; | |
2735 | } | |
6c038611 BP |
2736 | \f |
2737 | /* ofputil_phy_port */ | |
2738 | ||
2739 | /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */ | |
2740 | BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */ | |
2741 | BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */ | |
2742 | BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */ | |
2743 | BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */ | |
2744 | BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */ | |
2745 | BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */ | |
2746 | BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */ | |
2747 | ||
2748 | /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */ | |
9e1fd49b BP |
2749 | BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4)); |
2750 | BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4)); | |
2751 | BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4)); | |
2752 | BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4)); | |
2753 | BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4)); | |
6c038611 | 2754 | |
9e1fd49b BP |
2755 | static enum netdev_features |
2756 | netdev_port_features_from_ofp10(ovs_be32 ofp10_) | |
6c038611 BP |
2757 | { |
2758 | uint32_t ofp10 = ntohl(ofp10_); | |
2759 | return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4); | |
2760 | } | |
2761 | ||
9e1fd49b BP |
2762 | static ovs_be32 |
2763 | netdev_port_features_to_ofp10(enum netdev_features features) | |
6c038611 BP |
2764 | { |
2765 | return htonl((features & 0x7f) | ((features & 0xf800) >> 4)); | |
2766 | } | |
c6a93eb7 | 2767 | |
9e1fd49b BP |
2768 | BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */ |
2769 | BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */ | |
2770 | BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */ | |
2771 | BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */ | |
2772 | BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */ | |
2773 | BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */ | |
2774 | BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */ | |
2775 | BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */ | |
2776 | BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */ | |
2777 | BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */ | |
2778 | BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */ | |
2779 | BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */ | |
2780 | BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */ | |
2781 | BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */ | |
2782 | BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */ | |
2783 | BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */ | |
2784 | ||
2785 | static enum netdev_features | |
2786 | netdev_port_features_from_ofp11(ovs_be32 ofp11) | |
2787 | { | |
2788 | return ntohl(ofp11) & 0xffff; | |
2789 | } | |
2790 | ||
2791 | static ovs_be32 | |
2792 | netdev_port_features_to_ofp11(enum netdev_features features) | |
2793 | { | |
2794 | return htonl(features & 0xffff); | |
2795 | } | |
2796 | ||
2797 | static enum ofperr | |
2798 | ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp, | |
2799 | const struct ofp10_phy_port *opp) | |
2800 | { | |
2801 | memset(pp, 0, sizeof *pp); | |
2802 | ||
2803 | pp->port_no = ntohs(opp->port_no); | |
2804 | memcpy(pp->hw_addr, opp->hw_addr, OFP_ETH_ALEN); | |
2805 | ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN); | |
2806 | ||
2807 | pp->config = ntohl(opp->config) & OFPPC10_ALL; | |
2808 | pp->state = ntohl(opp->state) & OFPPS10_ALL; | |
2809 | ||
2810 | pp->curr = netdev_port_features_from_ofp10(opp->curr); | |
2811 | pp->advertised = netdev_port_features_from_ofp10(opp->advertised); | |
2812 | pp->supported = netdev_port_features_from_ofp10(opp->supported); | |
2813 | pp->peer = netdev_port_features_from_ofp10(opp->peer); | |
2814 | ||
d02a5f8e BP |
2815 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2816 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
9e1fd49b BP |
2817 | |
2818 | return 0; | |
2819 | } | |
2820 | ||
2821 | static enum ofperr | |
2822 | ofputil_decode_ofp11_port(struct ofputil_phy_port *pp, | |
2823 | const struct ofp11_port *op) | |
2824 | { | |
2825 | enum ofperr error; | |
2826 | ||
2827 | memset(pp, 0, sizeof *pp); | |
2828 | ||
2829 | error = ofputil_port_from_ofp11(op->port_no, &pp->port_no); | |
2830 | if (error) { | |
2831 | return error; | |
2832 | } | |
2833 | memcpy(pp->hw_addr, op->hw_addr, OFP_ETH_ALEN); | |
2834 | ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN); | |
2835 | ||
2836 | pp->config = ntohl(op->config) & OFPPC11_ALL; | |
2837 | pp->state = ntohl(op->state) & OFPPC11_ALL; | |
2838 | ||
2839 | pp->curr = netdev_port_features_from_ofp11(op->curr); | |
2840 | pp->advertised = netdev_port_features_from_ofp11(op->advertised); | |
2841 | pp->supported = netdev_port_features_from_ofp11(op->supported); | |
2842 | pp->peer = netdev_port_features_from_ofp11(op->peer); | |
2843 | ||
2844 | pp->curr_speed = ntohl(op->curr_speed); | |
2845 | pp->max_speed = ntohl(op->max_speed); | |
2846 | ||
2847 | return 0; | |
2848 | } | |
2849 | ||
5b5a3a67 | 2850 | static size_t |
2e3fa633 SH |
2851 | ofputil_get_phy_port_size(enum ofp_version ofp_version) |
2852 | { | |
2853 | switch (ofp_version) { | |
2854 | case OFP10_VERSION: | |
2855 | return sizeof(struct ofp10_phy_port); | |
2856 | case OFP11_VERSION: | |
2857 | case OFP12_VERSION: | |
2e1ae200 | 2858 | case OFP13_VERSION: |
2e3fa633 SH |
2859 | return sizeof(struct ofp11_port); |
2860 | default: | |
2861 | NOT_REACHED(); | |
2862 | } | |
5b5a3a67 JP |
2863 | } |
2864 | ||
9e1fd49b BP |
2865 | static void |
2866 | ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp, | |
2867 | struct ofp10_phy_port *opp) | |
2868 | { | |
2869 | memset(opp, 0, sizeof *opp); | |
2870 | ||
2871 | opp->port_no = htons(pp->port_no); | |
2872 | memcpy(opp->hw_addr, pp->hw_addr, ETH_ADDR_LEN); | |
2873 | ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN); | |
2874 | ||
2875 | opp->config = htonl(pp->config & OFPPC10_ALL); | |
2876 | opp->state = htonl(pp->state & OFPPS10_ALL); | |
2877 | ||
2878 | opp->curr = netdev_port_features_to_ofp10(pp->curr); | |
2879 | opp->advertised = netdev_port_features_to_ofp10(pp->advertised); | |
2880 | opp->supported = netdev_port_features_to_ofp10(pp->supported); | |
2881 | opp->peer = netdev_port_features_to_ofp10(pp->peer); | |
2882 | } | |
2883 | ||
2884 | static void | |
2885 | ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp, | |
2886 | struct ofp11_port *op) | |
2887 | { | |
2888 | memset(op, 0, sizeof *op); | |
2889 | ||
2890 | op->port_no = ofputil_port_to_ofp11(pp->port_no); | |
2891 | memcpy(op->hw_addr, pp->hw_addr, ETH_ADDR_LEN); | |
2892 | ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN); | |
2893 | ||
2894 | op->config = htonl(pp->config & OFPPC11_ALL); | |
2895 | op->state = htonl(pp->state & OFPPS11_ALL); | |
2896 | ||
2897 | op->curr = netdev_port_features_to_ofp11(pp->curr); | |
2898 | op->advertised = netdev_port_features_to_ofp11(pp->advertised); | |
2899 | op->supported = netdev_port_features_to_ofp11(pp->supported); | |
2900 | op->peer = netdev_port_features_to_ofp11(pp->peer); | |
2901 | ||
2902 | op->curr_speed = htonl(pp->curr_speed); | |
2903 | op->max_speed = htonl(pp->max_speed); | |
2904 | } | |
2905 | ||
2906 | static void | |
2e3fa633 SH |
2907 | ofputil_put_phy_port(enum ofp_version ofp_version, |
2908 | const struct ofputil_phy_port *pp, struct ofpbuf *b) | |
9e1fd49b | 2909 | { |
2e3fa633 SH |
2910 | switch (ofp_version) { |
2911 | case OFP10_VERSION: { | |
9e1fd49b BP |
2912 | struct ofp10_phy_port *opp; |
2913 | if (b->size + sizeof *opp <= UINT16_MAX) { | |
2914 | opp = ofpbuf_put_uninit(b, sizeof *opp); | |
2915 | ofputil_encode_ofp10_phy_port(pp, opp); | |
2916 | } | |
2e3fa633 SH |
2917 | break; |
2918 | } | |
2919 | ||
2920 | case OFP11_VERSION: | |
2e1ae200 JR |
2921 | case OFP12_VERSION: |
2922 | case OFP13_VERSION: { | |
9e1fd49b BP |
2923 | struct ofp11_port *op; |
2924 | if (b->size + sizeof *op <= UINT16_MAX) { | |
2925 | op = ofpbuf_put_uninit(b, sizeof *op); | |
2926 | ofputil_encode_ofp11_port(pp, op); | |
2927 | } | |
2e3fa633 SH |
2928 | break; |
2929 | } | |
2930 | ||
2931 | default: | |
2932 | NOT_REACHED(); | |
9e1fd49b BP |
2933 | } |
2934 | } | |
2be393ed JP |
2935 | |
2936 | void | |
2e3fa633 | 2937 | ofputil_append_port_desc_stats_reply(enum ofp_version ofp_version, |
2be393ed JP |
2938 | const struct ofputil_phy_port *pp, |
2939 | struct list *replies) | |
2940 | { | |
2e3fa633 SH |
2941 | switch (ofp_version) { |
2942 | case OFP10_VERSION: { | |
2be393ed JP |
2943 | struct ofp10_phy_port *opp; |
2944 | ||
982697a4 | 2945 | opp = ofpmp_append(replies, sizeof *opp); |
2be393ed | 2946 | ofputil_encode_ofp10_phy_port(pp, opp); |
2e3fa633 SH |
2947 | break; |
2948 | } | |
2949 | ||
2950 | case OFP11_VERSION: | |
2e1ae200 JR |
2951 | case OFP12_VERSION: |
2952 | case OFP13_VERSION: { | |
2be393ed JP |
2953 | struct ofp11_port *op; |
2954 | ||
982697a4 | 2955 | op = ofpmp_append(replies, sizeof *op); |
2be393ed | 2956 | ofputil_encode_ofp11_port(pp, op); |
2e3fa633 SH |
2957 | break; |
2958 | } | |
2959 | ||
2960 | default: | |
2961 | NOT_REACHED(); | |
2be393ed JP |
2962 | } |
2963 | } | |
9e1fd49b BP |
2964 | \f |
2965 | /* ofputil_switch_features */ | |
2966 | ||
2967 | #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \ | |
60202987 | 2968 | OFPC_IP_REASM | OFPC_QUEUE_STATS) |
9e1fd49b BP |
2969 | BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS); |
2970 | BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS); | |
2971 | BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS); | |
2972 | BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM); | |
2973 | BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS); | |
2974 | BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP); | |
2975 | ||
2976 | struct ofputil_action_bit_translation { | |
2977 | enum ofputil_action_bitmap ofputil_bit; | |
2978 | int of_bit; | |
2979 | }; | |
2980 | ||
2981 | static const struct ofputil_action_bit_translation of10_action_bits[] = { | |
2982 | { OFPUTIL_A_OUTPUT, OFPAT10_OUTPUT }, | |
2983 | { OFPUTIL_A_SET_VLAN_VID, OFPAT10_SET_VLAN_VID }, | |
2984 | { OFPUTIL_A_SET_VLAN_PCP, OFPAT10_SET_VLAN_PCP }, | |
2985 | { OFPUTIL_A_STRIP_VLAN, OFPAT10_STRIP_VLAN }, | |
2986 | { OFPUTIL_A_SET_DL_SRC, OFPAT10_SET_DL_SRC }, | |
2987 | { OFPUTIL_A_SET_DL_DST, OFPAT10_SET_DL_DST }, | |
2988 | { OFPUTIL_A_SET_NW_SRC, OFPAT10_SET_NW_SRC }, | |
2989 | { OFPUTIL_A_SET_NW_DST, OFPAT10_SET_NW_DST }, | |
2990 | { OFPUTIL_A_SET_NW_TOS, OFPAT10_SET_NW_TOS }, | |
2991 | { OFPUTIL_A_SET_TP_SRC, OFPAT10_SET_TP_SRC }, | |
2992 | { OFPUTIL_A_SET_TP_DST, OFPAT10_SET_TP_DST }, | |
2993 | { OFPUTIL_A_ENQUEUE, OFPAT10_ENQUEUE }, | |
2994 | { 0, 0 }, | |
2995 | }; | |
2996 | ||
9e1fd49b BP |
2997 | static enum ofputil_action_bitmap |
2998 | decode_action_bits(ovs_be32 of_actions, | |
2999 | const struct ofputil_action_bit_translation *x) | |
3000 | { | |
3001 | enum ofputil_action_bitmap ofputil_actions; | |
3002 | ||
3003 | ofputil_actions = 0; | |
3004 | for (; x->ofputil_bit; x++) { | |
3005 | if (of_actions & htonl(1u << x->of_bit)) { | |
3006 | ofputil_actions |= x->ofputil_bit; | |
3007 | } | |
3008 | } | |
3009 | return ofputil_actions; | |
3010 | } | |
3011 | ||
60202987 SH |
3012 | static uint32_t |
3013 | ofputil_capabilities_mask(enum ofp_version ofp_version) | |
3014 | { | |
3015 | /* Handle capabilities whose bit is unique for all Open Flow versions */ | |
3016 | switch (ofp_version) { | |
3017 | case OFP10_VERSION: | |
3018 | case OFP11_VERSION: | |
3019 | return OFPC_COMMON | OFPC_ARP_MATCH_IP; | |
3020 | case OFP12_VERSION: | |
2e1ae200 | 3021 | case OFP13_VERSION: |
60202987 SH |
3022 | return OFPC_COMMON | OFPC12_PORT_BLOCKED; |
3023 | default: | |
3024 | /* Caller needs to check osf->header.version itself */ | |
3025 | return 0; | |
3026 | } | |
3027 | } | |
3028 | ||
9e1fd49b BP |
3029 | /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an |
3030 | * abstract representation in '*features'. Initializes '*b' to iterate over | |
3031 | * the OpenFlow port structures following 'osf' with later calls to | |
2be393ed | 3032 | * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an |
9e1fd49b BP |
3033 | * OFPERR_* value. */ |
3034 | enum ofperr | |
982697a4 | 3035 | ofputil_decode_switch_features(const struct ofp_header *oh, |
9e1fd49b BP |
3036 | struct ofputil_switch_features *features, |
3037 | struct ofpbuf *b) | |
3038 | { | |
982697a4 BP |
3039 | const struct ofp_switch_features *osf; |
3040 | enum ofpraw raw; | |
3041 | ||
3042 | ofpbuf_use_const(b, oh, ntohs(oh->length)); | |
3043 | raw = ofpraw_pull_assert(b); | |
9e1fd49b | 3044 | |
982697a4 | 3045 | osf = ofpbuf_pull(b, sizeof *osf); |
9e1fd49b BP |
3046 | features->datapath_id = ntohll(osf->datapath_id); |
3047 | features->n_buffers = ntohl(osf->n_buffers); | |
3048 | features->n_tables = osf->n_tables; | |
2e1ae200 | 3049 | features->auxiliary_id = 0; |
9e1fd49b | 3050 | |
60202987 SH |
3051 | features->capabilities = ntohl(osf->capabilities) & |
3052 | ofputil_capabilities_mask(oh->version); | |
9e1fd49b | 3053 | |
982697a4 | 3054 | if (b->size % ofputil_get_phy_port_size(oh->version)) { |
5b5a3a67 JP |
3055 | return OFPERR_OFPBRC_BAD_LEN; |
3056 | } | |
3057 | ||
982697a4 | 3058 | if (raw == OFPRAW_OFPT10_FEATURES_REPLY) { |
9e1fd49b BP |
3059 | if (osf->capabilities & htonl(OFPC10_STP)) { |
3060 | features->capabilities |= OFPUTIL_C_STP; | |
3061 | } | |
3062 | features->actions = decode_action_bits(osf->actions, of10_action_bits); | |
2e1ae200 JR |
3063 | } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY |
3064 | || raw == OFPRAW_OFPT13_FEATURES_REPLY) { | |
9e1fd49b BP |
3065 | if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) { |
3066 | features->capabilities |= OFPUTIL_C_GROUP_STATS; | |
3067 | } | |
34b28fc7 | 3068 | features->actions = 0; |
2e1ae200 JR |
3069 | if (raw == OFPRAW_OFPT13_FEATURES_REPLY) { |
3070 | features->auxiliary_id = osf->auxiliary_id; | |
3071 | } | |
9e1fd49b BP |
3072 | } else { |
3073 | return OFPERR_OFPBRC_BAD_VERSION; | |
3074 | } | |
3075 | ||
3076 | return 0; | |
3077 | } | |
3078 | ||
982697a4 | 3079 | /* Returns true if the maximum number of ports are in 'oh'. */ |
347b7ac4 | 3080 | static bool |
982697a4 | 3081 | max_ports_in_features(const struct ofp_header *oh) |
347b7ac4 | 3082 | { |
982697a4 BP |
3083 | size_t pp_size = ofputil_get_phy_port_size(oh->version); |
3084 | return ntohs(oh->length) + pp_size > UINT16_MAX; | |
347b7ac4 JP |
3085 | } |
3086 | ||
3087 | /* Given a buffer 'b' that contains a Features Reply message, checks if | |
3088 | * it contains the maximum number of ports that will fit. If so, it | |
3089 | * returns true and removes the ports from the message. The caller | |
3090 | * should then send an OFPST_PORT_DESC stats request to get the ports, | |
3091 | * since the switch may have more ports than could be represented in the | |
3092 | * Features Reply. Otherwise, returns false. | |
3093 | */ | |
3094 | bool | |
3095 | ofputil_switch_features_ports_trunc(struct ofpbuf *b) | |
3096 | { | |
982697a4 | 3097 | struct ofp_header *oh = b->data; |
347b7ac4 | 3098 | |
982697a4 | 3099 | if (max_ports_in_features(oh)) { |
347b7ac4 | 3100 | /* Remove all the ports. */ |
982697a4 BP |
3101 | b->size = (sizeof(struct ofp_header) |
3102 | + sizeof(struct ofp_switch_features)); | |
3103 | ofpmsg_update_length(b); | |
347b7ac4 JP |
3104 | |
3105 | return true; | |
3106 | } | |
3107 | ||
3108 | return false; | |
3109 | } | |
3110 | ||
9e1fd49b BP |
3111 | static ovs_be32 |
3112 | encode_action_bits(enum ofputil_action_bitmap ofputil_actions, | |
3113 | const struct ofputil_action_bit_translation *x) | |
3114 | { | |
3115 | uint32_t of_actions; | |
3116 | ||
3117 | of_actions = 0; | |
3118 | for (; x->ofputil_bit; x++) { | |
3119 | if (ofputil_actions & x->ofputil_bit) { | |
3120 | of_actions |= 1 << x->of_bit; | |
3121 | } | |
3122 | } | |
3123 | return htonl(of_actions); | |
3124 | } | |
3125 | ||
3126 | /* Returns a buffer owned by the caller that encodes 'features' in the format | |
3127 | * required by 'protocol' with the given 'xid'. The caller should append port | |
3128 | * information to the buffer with subsequent calls to | |
3129 | * ofputil_put_switch_features_port(). */ | |
3130 | struct ofpbuf * | |
3131 | ofputil_encode_switch_features(const struct ofputil_switch_features *features, | |
3132 | enum ofputil_protocol protocol, ovs_be32 xid) | |
3133 | { | |
3134 | struct ofp_switch_features *osf; | |
3135 | struct ofpbuf *b; | |
2e3fa633 SH |
3136 | enum ofp_version version; |
3137 | enum ofpraw raw; | |
982697a4 BP |
3138 | |
3139 | version = ofputil_protocol_to_ofp_version(protocol); | |
2e3fa633 SH |
3140 | switch (version) { |
3141 | case OFP10_VERSION: | |
3142 | raw = OFPRAW_OFPT10_FEATURES_REPLY; | |
3143 | break; | |
3144 | case OFP11_VERSION: | |
3145 | case OFP12_VERSION: | |
3146 | raw = OFPRAW_OFPT11_FEATURES_REPLY; | |
3147 | break; | |
2e1ae200 JR |
3148 | case OFP13_VERSION: |
3149 | raw = OFPRAW_OFPT13_FEATURES_REPLY; | |
3150 | break; | |
2e3fa633 SH |
3151 | default: |
3152 | NOT_REACHED(); | |
3153 | } | |
3154 | b = ofpraw_alloc_xid(raw, version, xid, 0); | |
982697a4 | 3155 | osf = ofpbuf_put_zeros(b, sizeof *osf); |
9e1fd49b BP |
3156 | osf->datapath_id = htonll(features->datapath_id); |
3157 | osf->n_buffers = htonl(features->n_buffers); | |
3158 | osf->n_tables = features->n_tables; | |
3159 | ||
3160 | osf->capabilities = htonl(features->capabilities & OFPC_COMMON); | |
60202987 SH |
3161 | osf->capabilities = htonl(features->capabilities & |
3162 | ofputil_capabilities_mask(version)); | |
2e3fa633 SH |
3163 | switch (version) { |
3164 | case OFP10_VERSION: | |
9e1fd49b BP |
3165 | if (features->capabilities & OFPUTIL_C_STP) { |
3166 | osf->capabilities |= htonl(OFPC10_STP); | |
3167 | } | |
3168 | osf->actions = encode_action_bits(features->actions, of10_action_bits); | |
2e3fa633 | 3169 | break; |
2e1ae200 JR |
3170 | case OFP13_VERSION: |
3171 | osf->auxiliary_id = features->auxiliary_id; | |
3172 | /* fall through */ | |
2e3fa633 SH |
3173 | case OFP11_VERSION: |
3174 | case OFP12_VERSION: | |
9e1fd49b BP |
3175 | if (features->capabilities & OFPUTIL_C_GROUP_STATS) { |
3176 | osf->capabilities |= htonl(OFPC11_GROUP_STATS); | |
3177 | } | |
2e3fa633 SH |
3178 | break; |
3179 | default: | |
3180 | NOT_REACHED(); | |
9e1fd49b BP |
3181 | } |
3182 | ||
3183 | return b; | |
3184 | } | |
3185 | ||
3186 | /* Encodes 'pp' into the format required by the switch_features message already | |
3187 | * in 'b', which should have been returned by ofputil_encode_switch_features(), | |
3188 | * and appends the encoded version to 'b'. */ | |
3189 | void | |
3190 | ofputil_put_switch_features_port(const struct ofputil_phy_port *pp, | |
3191 | struct ofpbuf *b) | |
3192 | { | |
982697a4 | 3193 | const struct ofp_header *oh = b->data; |
9e1fd49b | 3194 | |
982697a4 | 3195 | ofputil_put_phy_port(oh->version, pp, b); |
9e1fd49b BP |
3196 | } |
3197 | \f | |
3198 | /* ofputil_port_status */ | |
3199 | ||
3200 | /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form | |
3201 | * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */ | |
3202 | enum ofperr | |
982697a4 | 3203 | ofputil_decode_port_status(const struct ofp_header *oh, |
9e1fd49b BP |
3204 | struct ofputil_port_status *ps) |
3205 | { | |
982697a4 | 3206 | const struct ofp_port_status *ops; |
9e1fd49b BP |
3207 | struct ofpbuf b; |
3208 | int retval; | |
3209 | ||
982697a4 BP |
3210 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
3211 | ofpraw_pull_assert(&b); | |
3212 | ops = ofpbuf_pull(&b, sizeof *ops); | |
3213 | ||
9e1fd49b BP |
3214 | if (ops->reason != OFPPR_ADD && |
3215 | ops->reason != OFPPR_DELETE && | |
3216 | ops->reason != OFPPR_MODIFY) { | |
3217 | return OFPERR_NXBRC_BAD_REASON; | |
3218 | } | |
3219 | ps->reason = ops->reason; | |
3220 | ||
982697a4 | 3221 | retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc); |
9e1fd49b BP |
3222 | assert(retval != EOF); |
3223 | return retval; | |
3224 | } | |
3225 | ||
3226 | /* Converts the abstract form of a "port status" message in '*ps' into an | |
3227 | * OpenFlow message suitable for 'protocol', and returns that encoded form in | |
3228 | * a buffer owned by the caller. */ | |
3229 | struct ofpbuf * | |
3230 | ofputil_encode_port_status(const struct ofputil_port_status *ps, | |
3231 | enum ofputil_protocol protocol) | |
3232 | { | |
3233 | struct ofp_port_status *ops; | |
3234 | struct ofpbuf *b; | |
2e3fa633 SH |
3235 | enum ofp_version version; |
3236 | enum ofpraw raw; | |
982697a4 BP |
3237 | |
3238 | version = ofputil_protocol_to_ofp_version(protocol); | |
2e3fa633 SH |
3239 | switch (version) { |
3240 | case OFP10_VERSION: | |
3241 | raw = OFPRAW_OFPT10_PORT_STATUS; | |
3242 | break; | |
3243 | ||
3244 | case OFP11_VERSION: | |
3245 | case OFP12_VERSION: | |
2e1ae200 | 3246 | case OFP13_VERSION: |
2e3fa633 SH |
3247 | raw = OFPRAW_OFPT11_PORT_STATUS; |
3248 | break; | |
3249 | ||
3250 | default: | |
3251 | NOT_REACHED(); | |
3252 | } | |
3253 | ||
3254 | b = ofpraw_alloc_xid(raw, version, htonl(0), 0); | |
982697a4 | 3255 | ops = ofpbuf_put_zeros(b, sizeof *ops); |
9e1fd49b | 3256 | ops->reason = ps->reason; |
982697a4 BP |
3257 | ofputil_put_phy_port(version, &ps->desc, b); |
3258 | ofpmsg_update_length(b); | |
9e1fd49b BP |
3259 | return b; |
3260 | } | |
3261 | \f | |
3262 | /* ofputil_port_mod */ | |
3263 | ||
3264 | /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in | |
3265 | * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */ | |
3266 | enum ofperr | |
3267 | ofputil_decode_port_mod(const struct ofp_header *oh, | |
3268 | struct ofputil_port_mod *pm) | |
3269 | { | |
982697a4 BP |
3270 | enum ofpraw raw; |
3271 | struct ofpbuf b; | |
9e1fd49b | 3272 | |
982697a4 BP |
3273 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
3274 | raw = ofpraw_pull_assert(&b); | |
3275 | ||
3276 | if (raw == OFPRAW_OFPT10_PORT_MOD) { | |
3277 | const struct ofp10_port_mod *opm = b.data; | |
9e1fd49b BP |
3278 | |
3279 | pm->port_no = ntohs(opm->port_no); | |
3280 | memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN); | |
3281 | pm->config = ntohl(opm->config) & OFPPC10_ALL; | |
3282 | pm->mask = ntohl(opm->mask) & OFPPC10_ALL; | |
3283 | pm->advertise = netdev_port_features_from_ofp10(opm->advertise); | |
982697a4 BP |
3284 | } else if (raw == OFPRAW_OFPT11_PORT_MOD) { |
3285 | const struct ofp11_port_mod *opm = b.data; | |
9e1fd49b BP |
3286 | enum ofperr error; |
3287 | ||
9e1fd49b BP |
3288 | error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no); |
3289 | if (error) { | |
3290 | return error; | |
3291 | } | |
3292 | ||
3293 | memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN); | |
3294 | pm->config = ntohl(opm->config) & OFPPC11_ALL; | |
3295 | pm->mask = ntohl(opm->mask) & OFPPC11_ALL; | |
3296 | pm->advertise = netdev_port_features_from_ofp11(opm->advertise); | |
3297 | } else { | |
982697a4 | 3298 | return OFPERR_OFPBRC_BAD_TYPE; |
9e1fd49b BP |
3299 | } |
3300 | ||
3301 | pm->config &= pm->mask; | |
3302 | return 0; | |
3303 | } | |
3304 | ||
3305 | /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow | |
3306 | * message suitable for 'protocol', and returns that encoded form in a buffer | |
3307 | * owned by the caller. */ | |
3308 | struct ofpbuf * | |
3309 | ofputil_encode_port_mod(const struct ofputil_port_mod *pm, | |
3310 | enum ofputil_protocol protocol) | |
3311 | { | |
2e3fa633 | 3312 | enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol); |
9e1fd49b BP |
3313 | struct ofpbuf *b; |
3314 | ||
2e3fa633 SH |
3315 | switch (ofp_version) { |
3316 | case OFP10_VERSION: { | |
9e1fd49b BP |
3317 | struct ofp10_port_mod *opm; |
3318 | ||
982697a4 BP |
3319 | b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0); |
3320 | opm = ofpbuf_put_zeros(b, sizeof *opm); | |
9e1fd49b BP |
3321 | opm->port_no = htons(pm->port_no); |
3322 | memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN); | |
3323 | opm->config = htonl(pm->config & OFPPC10_ALL); | |
3324 | opm->mask = htonl(pm->mask & OFPPC10_ALL); | |
3325 | opm->advertise = netdev_port_features_to_ofp10(pm->advertise); | |
2e3fa633 SH |
3326 | break; |
3327 | } | |
3328 | ||
5fe7c919 | 3329 | case OFP11_VERSION: |
2e1ae200 JR |
3330 | case OFP12_VERSION: |
3331 | case OFP13_VERSION: { | |
9e1fd49b BP |
3332 | struct ofp11_port_mod *opm; |
3333 | ||
982697a4 BP |
3334 | b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0); |
3335 | opm = ofpbuf_put_zeros(b, sizeof *opm); | |
026a5179 | 3336 | opm->port_no = ofputil_port_to_ofp11(pm->port_no); |
9e1fd49b BP |
3337 | memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN); |
3338 | opm->config = htonl(pm->config & OFPPC11_ALL); | |
3339 | opm->mask = htonl(pm->mask & OFPPC11_ALL); | |
3340 | opm->advertise = netdev_port_features_to_ofp11(pm->advertise); | |
2e3fa633 SH |
3341 | break; |
3342 | } | |
3343 | ||
2e3fa633 | 3344 | default: |
9e1fd49b BP |
3345 | NOT_REACHED(); |
3346 | } | |
3347 | ||
3348 | return b; | |
3349 | } | |
2b07c8b1 | 3350 | \f |
307975da SH |
3351 | /* Table stats. */ |
3352 | ||
3353 | static void | |
3354 | ofputil_put_ofp10_table_stats(const struct ofp12_table_stats *in, | |
3355 | struct ofpbuf *buf) | |
3356 | { | |
3357 | struct wc_map { | |
31a9e63f | 3358 | enum ofp10_flow_wildcards wc10; |
307975da SH |
3359 | enum oxm12_ofb_match_fields mf12; |
3360 | }; | |
3361 | ||
3362 | static const struct wc_map wc_map[] = { | |
3363 | { OFPFW10_IN_PORT, OFPXMT12_OFB_IN_PORT }, | |
3364 | { OFPFW10_DL_VLAN, OFPXMT12_OFB_VLAN_VID }, | |
3365 | { OFPFW10_DL_SRC, OFPXMT12_OFB_ETH_SRC }, | |
3366 | { OFPFW10_DL_DST, OFPXMT12_OFB_ETH_DST}, | |
3367 | { OFPFW10_DL_TYPE, OFPXMT12_OFB_ETH_TYPE }, | |
3368 | { OFPFW10_NW_PROTO, OFPXMT12_OFB_IP_PROTO }, | |
3369 | { OFPFW10_TP_SRC, OFPXMT12_OFB_TCP_SRC }, | |
3370 | { OFPFW10_TP_DST, OFPXMT12_OFB_TCP_DST }, | |
3371 | { OFPFW10_NW_SRC_MASK, OFPXMT12_OFB_IPV4_SRC }, | |
3372 | { OFPFW10_NW_DST_MASK, OFPXMT12_OFB_IPV4_DST }, | |
3373 | { OFPFW10_DL_VLAN_PCP, OFPXMT12_OFB_VLAN_PCP }, | |
3374 | { OFPFW10_NW_TOS, OFPXMT12_OFB_IP_DSCP }, | |
3375 | }; | |
3376 | ||
3377 | struct ofp10_table_stats *out; | |
3378 | const struct wc_map *p; | |
3379 | ||
3380 | out = ofpbuf_put_uninit(buf, sizeof *out); | |
3381 | out->table_id = in->table_id; | |
3382 | strcpy(out->name, in->name); | |
3383 | out->wildcards = 0; | |
3384 | for (p = wc_map; p < &wc_map[ARRAY_SIZE(wc_map)]; p++) { | |
3385 | if (in->wildcards & htonll(1ULL << p->mf12)) { | |
3386 | out->wildcards |= htonl(p->wc10); | |
3387 | } | |
3388 | } | |
3389 | out->max_entries = in->max_entries; | |
3390 | out->active_count = in->active_count; | |
3391 | put_32aligned_be64(&out->lookup_count, in->lookup_count); | |
3392 | put_32aligned_be64(&out->matched_count, in->matched_count); | |
3393 | } | |
3394 | ||
3395 | static ovs_be32 | |
3396 | oxm12_to_ofp11_flow_match_fields(ovs_be64 oxm12) | |
3397 | { | |
3398 | struct map { | |
3399 | enum ofp11_flow_match_fields fmf11; | |
3400 | enum oxm12_ofb_match_fields mf12; | |
3401 | }; | |
3402 | ||
3403 | static const struct map map[] = { | |
3404 | { OFPFMF11_IN_PORT, OFPXMT12_OFB_IN_PORT }, | |
3405 | { OFPFMF11_DL_VLAN, OFPXMT12_OFB_VLAN_VID }, | |
3406 | { OFPFMF11_DL_VLAN_PCP, OFPXMT12_OFB_VLAN_PCP }, | |
3407 | { OFPFMF11_DL_TYPE, OFPXMT12_OFB_ETH_TYPE }, | |
3408 | { OFPFMF11_NW_TOS, OFPXMT12_OFB_IP_DSCP }, | |
3409 | { OFPFMF11_NW_PROTO, OFPXMT12_OFB_IP_PROTO }, | |
3410 | { OFPFMF11_TP_SRC, OFPXMT12_OFB_TCP_SRC }, | |
3411 | { OFPFMF11_TP_DST, OFPXMT12_OFB_TCP_DST }, | |
3412 | { OFPFMF11_MPLS_LABEL, OFPXMT12_OFB_MPLS_LABEL }, | |
3413 | { OFPFMF11_MPLS_TC, OFPXMT12_OFB_MPLS_TC }, | |
3414 | /* I don't know what OFPFMF11_TYPE means. */ | |
3415 | { OFPFMF11_DL_SRC, OFPXMT12_OFB_ETH_SRC }, | |
3416 | { OFPFMF11_DL_DST, OFPXMT12_OFB_ETH_DST }, | |
3417 | { OFPFMF11_NW_SRC, OFPXMT12_OFB_IPV4_SRC }, | |
3418 | { OFPFMF11_NW_DST, OFPXMT12_OFB_IPV4_DST }, | |
3419 | { OFPFMF11_METADATA, OFPXMT12_OFB_METADATA }, | |
3420 | }; | |
3421 | ||
3422 | const struct map *p; | |
3423 | uint32_t fmf11; | |
3424 | ||
3425 | fmf11 = 0; | |
3426 | for (p = map; p < &map[ARRAY_SIZE(map)]; p++) { | |
3427 | if (oxm12 & htonll(1ULL << p->mf12)) { | |
3428 | fmf11 |= p->fmf11; | |
3429 | } | |
3430 | } | |
3431 | return htonl(fmf11); | |
3432 | } | |
3433 | ||
3434 | static void | |
3435 | ofputil_put_ofp11_table_stats(const struct ofp12_table_stats *in, | |
3436 | struct ofpbuf *buf) | |
3437 | { | |
3438 | struct ofp11_table_stats *out; | |
3439 | ||
3440 | out = ofpbuf_put_uninit(buf, sizeof *out); | |
3441 | out->table_id = in->table_id; | |
3442 | strcpy(out->name, in->name); | |
3443 | out->wildcards = oxm12_to_ofp11_flow_match_fields(in->wildcards); | |
3444 | out->match = oxm12_to_ofp11_flow_match_fields(in->match); | |
3445 | out->instructions = in->instructions; | |
3446 | out->write_actions = in->write_actions; | |
3447 | out->apply_actions = in->apply_actions; | |
3448 | out->config = in->config; | |
3449 | out->max_entries = in->max_entries; | |
3450 | out->active_count = in->active_count; | |
3451 | out->lookup_count = in->lookup_count; | |
3452 | out->matched_count = in->matched_count; | |
3453 | } | |
3454 | ||
2e1ae200 JR |
3455 | static void |
3456 | ofputil_put_ofp13_table_stats(const struct ofp12_table_stats *in, | |
3457 | struct ofpbuf *buf) | |
3458 | { | |
3459 | struct ofp13_table_stats *out; | |
3460 | ||
3461 | /* OF 1.3 splits table features off the ofp_table_stats, | |
3462 | * so there is not much here. */ | |
3463 | ||
3464 | out = ofpbuf_put_uninit(buf, sizeof *out); | |
3465 | out->table_id = in->table_id; | |
3466 | out->active_count = in->active_count; | |
3467 | out->lookup_count = in->lookup_count; | |
3468 | out->matched_count = in->matched_count; | |
3469 | } | |
3470 | ||
307975da SH |
3471 | struct ofpbuf * |
3472 | ofputil_encode_table_stats_reply(const struct ofp12_table_stats stats[], int n, | |
3473 | const struct ofp_header *request) | |
3474 | { | |
3475 | struct ofpbuf *reply; | |
3476 | int i; | |
3477 | ||
3478 | reply = ofpraw_alloc_stats_reply(request, n * sizeof *stats); | |
3479 | ||
3480 | switch ((enum ofp_version) request->version) { | |
3481 | case OFP10_VERSION: | |
3482 | for (i = 0; i < n; i++) { | |
3483 | ofputil_put_ofp10_table_stats(&stats[i], reply); | |
3484 | } | |
3485 | break; | |
3486 | ||
3487 | case OFP11_VERSION: | |
3488 | for (i = 0; i < n; i++) { | |
3489 | ofputil_put_ofp11_table_stats(&stats[i], reply); | |
3490 | } | |
3491 | break; | |
3492 | ||
3493 | case OFP12_VERSION: | |
3494 | ofpbuf_put(reply, stats, n * sizeof *stats); | |
3495 | break; | |
3496 | ||
2e1ae200 JR |
3497 | case OFP13_VERSION: |
3498 | for (i = 0; i < n; i++) { | |
3499 | ofputil_put_ofp13_table_stats(&stats[i], reply); | |
3500 | } | |
3501 | break; | |
3502 | ||
307975da SH |
3503 | default: |
3504 | NOT_REACHED(); | |
3505 | } | |
3506 | ||
3507 | return reply; | |
3508 | } | |
3509 | \f | |
2b07c8b1 BP |
3510 | /* ofputil_flow_monitor_request */ |
3511 | ||
3512 | /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract | |
3513 | * ofputil_flow_monitor_request in 'rq'. | |
3514 | * | |
3515 | * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow | |
3516 | * message. Calling this function multiple times for a single 'msg' iterates | |
3517 | * through the requests. The caller must initially leave 'msg''s layer | |
3518 | * pointers null and not modify them between calls. | |
3519 | * | |
3520 | * Returns 0 if successful, EOF if no requests were left in this 'msg', | |
3521 | * otherwise an OFPERR_* value. */ | |
3522 | int | |
3523 | ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq, | |
3524 | struct ofpbuf *msg) | |
3525 | { | |
3526 | struct nx_flow_monitor_request *nfmr; | |
3527 | uint16_t flags; | |
3528 | ||
3529 | if (!msg->l2) { | |
3530 | msg->l2 = msg->data; | |
982697a4 | 3531 | ofpraw_pull_assert(msg); |
2b07c8b1 BP |
3532 | } |
3533 | ||
3534 | if (!msg->size) { | |
3535 | return EOF; | |
3536 | } | |
3537 | ||
3538 | nfmr = ofpbuf_try_pull(msg, sizeof *nfmr); | |
3539 | if (!nfmr) { | |
3540 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %zu " | |
3541 | "leftover bytes at end", msg->size); | |
3542 | return OFPERR_OFPBRC_BAD_LEN; | |
3543 | } | |
3544 | ||
3545 | flags = ntohs(nfmr->flags); | |
3546 | if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY)) | |
3547 | || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE | |
3548 | | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) { | |
3549 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16, | |
3550 | flags); | |
3551 | return OFPERR_NXBRC_FM_BAD_FLAGS; | |
3552 | } | |
3553 | ||
3554 | if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) { | |
3555 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
3556 | } | |
3557 | ||
3558 | rq->id = ntohl(nfmr->id); | |
3559 | rq->flags = flags; | |
3560 | rq->out_port = ntohs(nfmr->out_port); | |
3561 | rq->table_id = nfmr->table_id; | |
3562 | ||
81a76618 | 3563 | return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL); |
2b07c8b1 BP |
3564 | } |
3565 | ||
3566 | void | |
3567 | ofputil_append_flow_monitor_request( | |
3568 | const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg) | |
3569 | { | |
3570 | struct nx_flow_monitor_request *nfmr; | |
3571 | size_t start_ofs; | |
3572 | int match_len; | |
3573 | ||
3574 | if (!msg->size) { | |
982697a4 | 3575 | ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg); |
2b07c8b1 BP |
3576 | } |
3577 | ||
3578 | start_ofs = msg->size; | |
3579 | ofpbuf_put_zeros(msg, sizeof *nfmr); | |
7623f4dd | 3580 | match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0)); |
2b07c8b1 BP |
3581 | |
3582 | nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr); | |
3583 | nfmr->id = htonl(rq->id); | |
3584 | nfmr->flags = htons(rq->flags); | |
3585 | nfmr->out_port = htons(rq->out_port); | |
3586 | nfmr->match_len = htons(match_len); | |
3587 | nfmr->table_id = rq->table_id; | |
3588 | } | |
3589 | ||
3590 | /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg' | |
3591 | * into an abstract ofputil_flow_update in 'update'. The caller must have | |
81a76618 | 3592 | * initialized update->match to point to space allocated for a match. |
2b07c8b1 BP |
3593 | * |
3594 | * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's | |
3595 | * actions (except for NXFME_ABBREV, which never includes actions). The caller | |
3596 | * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts' | |
3597 | * will point into the 'ofpacts' buffer. | |
3598 | * | |
3599 | * Multiple flow updates can be packed into a single OpenFlow message. Calling | |
3600 | * this function multiple times for a single 'msg' iterates through the | |
3601 | * updates. The caller must initially leave 'msg''s layer pointers null and | |
3602 | * not modify them between calls. | |
3603 | * | |
3604 | * Returns 0 if successful, EOF if no updates were left in this 'msg', | |
3605 | * otherwise an OFPERR_* value. */ | |
3606 | int | |
3607 | ofputil_decode_flow_update(struct ofputil_flow_update *update, | |
3608 | struct ofpbuf *msg, struct ofpbuf *ofpacts) | |
3609 | { | |
3610 | struct nx_flow_update_header *nfuh; | |
3611 | unsigned int length; | |
3612 | ||
3613 | if (!msg->l2) { | |
3614 | msg->l2 = msg->data; | |
982697a4 | 3615 | ofpraw_pull_assert(msg); |
2b07c8b1 BP |
3616 | } |
3617 | ||
3618 | if (!msg->size) { | |
3619 | return EOF; | |
3620 | } | |
3621 | ||
3622 | if (msg->size < sizeof(struct nx_flow_update_header)) { | |
3623 | goto bad_len; | |
3624 | } | |
3625 | ||
3626 | nfuh = msg->data; | |
3627 | update->event = ntohs(nfuh->event); | |
3628 | length = ntohs(nfuh->length); | |
3629 | if (length > msg->size || length % 8) { | |
3630 | goto bad_len; | |
3631 | } | |
3632 | ||
3633 | if (update->event == NXFME_ABBREV) { | |
3634 | struct nx_flow_update_abbrev *nfua; | |
3635 | ||
3636 | if (length != sizeof *nfua) { | |
3637 | goto bad_len; | |
3638 | } | |
3639 | ||
3640 | nfua = ofpbuf_pull(msg, sizeof *nfua); | |
3641 | update->xid = nfua->xid; | |
3642 | return 0; | |
3643 | } else if (update->event == NXFME_ADDED | |
3644 | || update->event == NXFME_DELETED | |
3645 | || update->event == NXFME_MODIFIED) { | |
3646 | struct nx_flow_update_full *nfuf; | |
3647 | unsigned int actions_len; | |
3648 | unsigned int match_len; | |
3649 | enum ofperr error; | |
3650 | ||
3651 | if (length < sizeof *nfuf) { | |
3652 | goto bad_len; | |
3653 | } | |
3654 | ||
3655 | nfuf = ofpbuf_pull(msg, sizeof *nfuf); | |
3656 | match_len = ntohs(nfuf->match_len); | |
3657 | if (sizeof *nfuf + match_len > length) { | |
3658 | goto bad_len; | |
3659 | } | |
3660 | ||
3661 | update->reason = ntohs(nfuf->reason); | |
3662 | update->idle_timeout = ntohs(nfuf->idle_timeout); | |
3663 | update->hard_timeout = ntohs(nfuf->hard_timeout); | |
3664 | update->table_id = nfuf->table_id; | |
3665 | update->cookie = nfuf->cookie; | |
81a76618 | 3666 | update->priority = ntohs(nfuf->priority); |
2b07c8b1 | 3667 | |
81a76618 | 3668 | error = nx_pull_match(msg, match_len, update->match, NULL, NULL); |
2b07c8b1 BP |
3669 | if (error) { |
3670 | return error; | |
3671 | } | |
3672 | ||
3673 | actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8); | |
3674 | error = ofpacts_pull_openflow10(msg, actions_len, ofpacts); | |
3675 | if (error) { | |
3676 | return error; | |
3677 | } | |
3678 | ||
3679 | update->ofpacts = ofpacts->data; | |
3680 | update->ofpacts_len = ofpacts->size; | |
3681 | return 0; | |
3682 | } else { | |
3683 | VLOG_WARN_RL(&bad_ofmsg_rl, | |
3684 | "NXST_FLOW_MONITOR reply has bad event %"PRIu16, | |
3685 | ntohs(nfuh->event)); | |
15549878 | 3686 | return OFPERR_NXBRC_FM_BAD_EVENT; |
2b07c8b1 BP |
3687 | } |
3688 | ||
3689 | bad_len: | |
3690 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %zu " | |
3691 | "leftover bytes at end", msg->size); | |
3692 | return OFPERR_OFPBRC_BAD_LEN; | |
3693 | } | |
3694 | ||
3695 | uint32_t | |
3696 | ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh) | |
3697 | { | |
982697a4 BP |
3698 | const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh); |
3699 | ||
3700 | return ntohl(cancel->id); | |
2b07c8b1 | 3701 | } |
9e1fd49b | 3702 | |
2b07c8b1 BP |
3703 | struct ofpbuf * |
3704 | ofputil_encode_flow_monitor_cancel(uint32_t id) | |
3705 | { | |
3706 | struct nx_flow_monitor_cancel *nfmc; | |
3707 | struct ofpbuf *msg; | |
3708 | ||
982697a4 BP |
3709 | msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0); |
3710 | nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc); | |
2b07c8b1 BP |
3711 | nfmc->id = htonl(id); |
3712 | return msg; | |
3713 | } | |
3714 | ||
3715 | void | |
3716 | ofputil_start_flow_update(struct list *replies) | |
3717 | { | |
3718 | struct ofpbuf *msg; | |
3719 | ||
982697a4 BP |
3720 | msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION, |
3721 | htonl(0), 1024); | |
2b07c8b1 BP |
3722 | |
3723 | list_init(replies); | |
3724 | list_push_back(replies, &msg->list_node); | |
3725 | } | |
3726 | ||
3727 | void | |
3728 | ofputil_append_flow_update(const struct ofputil_flow_update *update, | |
3729 | struct list *replies) | |
3730 | { | |
3731 | struct nx_flow_update_header *nfuh; | |
3732 | struct ofpbuf *msg; | |
3733 | size_t start_ofs; | |
3734 | ||
3735 | msg = ofpbuf_from_list(list_back(replies)); | |
3736 | start_ofs = msg->size; | |
3737 | ||
3738 | if (update->event == NXFME_ABBREV) { | |
3739 | struct nx_flow_update_abbrev *nfua; | |
3740 | ||
3741 | nfua = ofpbuf_put_zeros(msg, sizeof *nfua); | |
3742 | nfua->xid = update->xid; | |
3743 | } else { | |
3744 | struct nx_flow_update_full *nfuf; | |
3745 | int match_len; | |
3746 | ||
3747 | ofpbuf_put_zeros(msg, sizeof *nfuf); | |
7623f4dd | 3748 | match_len = nx_put_match(msg, update->match, htonll(0), htonll(0)); |
2b07c8b1 BP |
3749 | ofpacts_put_openflow10(update->ofpacts, update->ofpacts_len, msg); |
3750 | ||
3751 | nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf); | |
3752 | nfuf->reason = htons(update->reason); | |
81a76618 | 3753 | nfuf->priority = htons(update->priority); |
2b07c8b1 BP |
3754 | nfuf->idle_timeout = htons(update->idle_timeout); |
3755 | nfuf->hard_timeout = htons(update->hard_timeout); | |
3756 | nfuf->match_len = htons(match_len); | |
3757 | nfuf->table_id = update->table_id; | |
3758 | nfuf->cookie = update->cookie; | |
3759 | } | |
3760 | ||
3761 | nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh); | |
3762 | nfuh->length = htons(msg->size - start_ofs); | |
3763 | nfuh->event = htons(update->event); | |
3764 | ||
982697a4 | 3765 | ofpmp_postappend(replies, start_ofs); |
2b07c8b1 BP |
3766 | } |
3767 | \f | |
c6a93eb7 | 3768 | struct ofpbuf * |
de0f3156 SH |
3769 | ofputil_encode_packet_out(const struct ofputil_packet_out *po, |
3770 | enum ofputil_protocol protocol) | |
c6a93eb7 | 3771 | { |
de0f3156 | 3772 | enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol); |
c6a93eb7 BP |
3773 | struct ofpbuf *msg; |
3774 | size_t size; | |
3775 | ||
982697a4 | 3776 | size = po->ofpacts_len; |
c6a93eb7 BP |
3777 | if (po->buffer_id == UINT32_MAX) { |
3778 | size += po->packet_len; | |
3779 | } | |
3780 | ||
de0f3156 SH |
3781 | switch (ofp_version) { |
3782 | case OFP10_VERSION: { | |
31a9e63f | 3783 | struct ofp10_packet_out *opo; |
de0f3156 SH |
3784 | size_t actions_ofs; |
3785 | ||
3786 | msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size); | |
3787 | ofpbuf_put_zeros(msg, sizeof *opo); | |
3788 | actions_ofs = msg->size; | |
3789 | ofpacts_put_openflow10(po->ofpacts, po->ofpacts_len, msg); | |
3790 | ||
3791 | opo = msg->l3; | |
3792 | opo->buffer_id = htonl(po->buffer_id); | |
3793 | opo->in_port = htons(po->in_port); | |
3794 | opo->actions_len = htons(msg->size - actions_ofs); | |
3795 | break; | |
3796 | } | |
f25d0cf3 | 3797 | |
de0f3156 | 3798 | case OFP11_VERSION: |
2e1ae200 JR |
3799 | case OFP12_VERSION: |
3800 | case OFP13_VERSION: { | |
7c1b1a0d SH |
3801 | struct ofp11_packet_out *opo; |
3802 | size_t len; | |
3803 | ||
3804 | msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size); | |
3805 | ofpbuf_put_zeros(msg, sizeof *opo); | |
3806 | len = ofpacts_put_openflow11_actions(po->ofpacts, po->ofpacts_len, msg); | |
3807 | ||
3808 | opo = msg->l3; | |
3809 | opo->buffer_id = htonl(po->buffer_id); | |
3810 | opo->in_port = ofputil_port_to_ofp11(po->in_port); | |
3811 | opo->actions_len = htons(len); | |
3812 | break; | |
3813 | } | |
3814 | ||
de0f3156 SH |
3815 | default: |
3816 | NOT_REACHED(); | |
3817 | } | |
f25d0cf3 | 3818 | |
c6a93eb7 BP |
3819 | if (po->buffer_id == UINT32_MAX) { |
3820 | ofpbuf_put(msg, po->packet, po->packet_len); | |
3821 | } | |
f25d0cf3 | 3822 | |
982697a4 | 3823 | ofpmsg_update_length(msg); |
c6a93eb7 BP |
3824 | |
3825 | return msg; | |
3826 | } | |
d1e2cf21 | 3827 | \f |
fa37b408 BP |
3828 | /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */ |
3829 | struct ofpbuf * | |
1a126c0c | 3830 | make_echo_request(enum ofp_version ofp_version) |
fa37b408 | 3831 | { |
1a126c0c | 3832 | return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version, |
982697a4 | 3833 | htonl(0), 0); |
fa37b408 BP |
3834 | } |
3835 | ||
3836 | /* Creates and returns an OFPT_ECHO_REPLY message matching the | |
3837 | * OFPT_ECHO_REQUEST message in 'rq'. */ | |
3838 | struct ofpbuf * | |
3839 | make_echo_reply(const struct ofp_header *rq) | |
3840 | { | |
982697a4 BP |
3841 | struct ofpbuf rq_buf; |
3842 | struct ofpbuf *reply; | |
3843 | ||
3844 | ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length)); | |
3845 | ofpraw_pull_assert(&rq_buf); | |
3846 | ||
3847 | reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, rq_buf.size); | |
3848 | ofpbuf_put(reply, rq_buf.data, rq_buf.size); | |
3849 | return reply; | |
fa37b408 BP |
3850 | } |
3851 | ||
efb80167 | 3852 | struct ofpbuf * |
a0ae0b6e | 3853 | ofputil_encode_barrier_request(enum ofp_version ofp_version) |
efb80167 | 3854 | { |
a0ae0b6e SH |
3855 | enum ofpraw type; |
3856 | ||
3857 | switch (ofp_version) { | |
2e1ae200 | 3858 | case OFP13_VERSION: |
a0ae0b6e SH |
3859 | case OFP12_VERSION: |
3860 | case OFP11_VERSION: | |
3861 | type = OFPRAW_OFPT11_BARRIER_REQUEST; | |
3862 | break; | |
3863 | ||
3864 | case OFP10_VERSION: | |
3865 | type = OFPRAW_OFPT10_BARRIER_REQUEST; | |
3866 | break; | |
3867 | ||
3868 | default: | |
3869 | NOT_REACHED(); | |
3870 | } | |
3871 | ||
3872 | return ofpraw_alloc(type, ofp_version, 0); | |
efb80167 BP |
3873 | } |
3874 | ||
7257b535 BP |
3875 | const char * |
3876 | ofputil_frag_handling_to_string(enum ofp_config_flags flags) | |
3877 | { | |
3878 | switch (flags & OFPC_FRAG_MASK) { | |
3879 | case OFPC_FRAG_NORMAL: return "normal"; | |
3880 | case OFPC_FRAG_DROP: return "drop"; | |
3881 | case OFPC_FRAG_REASM: return "reassemble"; | |
3882 | case OFPC_FRAG_NX_MATCH: return "nx-match"; | |
3883 | } | |
3884 | ||
3885 | NOT_REACHED(); | |
3886 | } | |
3887 | ||
3888 | bool | |
3889 | ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags) | |
3890 | { | |
3891 | if (!strcasecmp(s, "normal")) { | |
3892 | *flags = OFPC_FRAG_NORMAL; | |
3893 | } else if (!strcasecmp(s, "drop")) { | |
3894 | *flags = OFPC_FRAG_DROP; | |
3895 | } else if (!strcasecmp(s, "reassemble")) { | |
3896 | *flags = OFPC_FRAG_REASM; | |
3897 | } else if (!strcasecmp(s, "nx-match")) { | |
3898 | *flags = OFPC_FRAG_NX_MATCH; | |
3899 | } else { | |
3900 | return false; | |
3901 | } | |
3902 | return true; | |
3903 | } | |
3904 | ||
7b7503ea BP |
3905 | /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0 |
3906 | * port number and stores the latter in '*ofp10_port', for the purpose of | |
3907 | * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful, | |
3908 | * otherwise an OFPERR_* number. | |
3909 | * | |
3910 | * See the definition of OFP11_MAX for an explanation of the mapping. */ | |
3911 | enum ofperr | |
3912 | ofputil_port_from_ofp11(ovs_be32 ofp11_port, uint16_t *ofp10_port) | |
3913 | { | |
3914 | uint32_t ofp11_port_h = ntohl(ofp11_port); | |
3915 | ||
3916 | if (ofp11_port_h < OFPP_MAX) { | |
3917 | *ofp10_port = ofp11_port_h; | |
3918 | return 0; | |
3919 | } else if (ofp11_port_h >= OFPP11_MAX) { | |
3920 | *ofp10_port = ofp11_port_h - OFPP11_OFFSET; | |
3921 | return 0; | |
3922 | } else { | |
3923 | VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported " | |
3924 | "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32, | |
3925 | ofp11_port_h, OFPP_MAX - 1, | |
3926 | (uint32_t) OFPP11_MAX, UINT32_MAX); | |
3927 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
3928 | } | |
3929 | } | |
3930 | ||
3931 | /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port | |
3932 | * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages. | |
3933 | * | |
3934 | * See the definition of OFP11_MAX for an explanation of the mapping. */ | |
3935 | ovs_be32 | |
3936 | ofputil_port_to_ofp11(uint16_t ofp10_port) | |
3937 | { | |
3938 | return htonl(ofp10_port < OFPP_MAX | |
3939 | ? ofp10_port | |
3940 | : ofp10_port + OFPP11_OFFSET); | |
3941 | } | |
3942 | ||
08f94c0e | 3943 | /* Checks that 'port' is a valid output port for the OFPAT10_OUTPUT action, given |
c1c9c9c4 | 3944 | * that the switch will never have more than 'max_ports' ports. Returns 0 if |
90bf1e07 BP |
3945 | * 'port' is valid, otherwise an OpenFlow return code. */ |
3946 | enum ofperr | |
77410139 | 3947 | ofputil_check_output_port(uint16_t port, int max_ports) |
fa37b408 BP |
3948 | { |
3949 | switch (port) { | |
3950 | case OFPP_IN_PORT: | |
3951 | case OFPP_TABLE: | |
3952 | case OFPP_NORMAL: | |
3953 | case OFPP_FLOOD: | |
3954 | case OFPP_ALL: | |
3955 | case OFPP_CONTROLLER: | |
0d193212 | 3956 | case OFPP_NONE: |
fa37b408 BP |
3957 | case OFPP_LOCAL: |
3958 | return 0; | |
3959 | ||
3960 | default: | |
c1c9c9c4 | 3961 | if (port < max_ports) { |
fa37b408 BP |
3962 | return 0; |
3963 | } | |
90bf1e07 | 3964 | return OFPERR_OFPBAC_BAD_OUT_PORT; |
fa37b408 BP |
3965 | } |
3966 | } | |
3967 | ||
39dc9082 BP |
3968 | #define OFPUTIL_NAMED_PORTS \ |
3969 | OFPUTIL_NAMED_PORT(IN_PORT) \ | |
3970 | OFPUTIL_NAMED_PORT(TABLE) \ | |
3971 | OFPUTIL_NAMED_PORT(NORMAL) \ | |
3972 | OFPUTIL_NAMED_PORT(FLOOD) \ | |
3973 | OFPUTIL_NAMED_PORT(ALL) \ | |
3974 | OFPUTIL_NAMED_PORT(CONTROLLER) \ | |
3975 | OFPUTIL_NAMED_PORT(LOCAL) \ | |
7f05e7ab JR |
3976 | OFPUTIL_NAMED_PORT(ANY) |
3977 | ||
3978 | /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */ | |
3979 | #define OFPUTIL_NAMED_PORTS_WITH_NONE \ | |
3980 | OFPUTIL_NAMED_PORTS \ | |
39dc9082 BP |
3981 | OFPUTIL_NAMED_PORT(NONE) |
3982 | ||
8010100b BP |
3983 | /* Stores the port number represented by 's' into '*portp'. 's' may be an |
3984 | * integer or, for reserved ports, the standard OpenFlow name for the port | |
3985 | * (e.g. "LOCAL"). | |
c6100d92 | 3986 | * |
8010100b BP |
3987 | * Returns true if successful, false if 's' is not a valid OpenFlow port number |
3988 | * or name. The caller should issue an error message in this case, because | |
3989 | * this function usually does not. (This gives the caller an opportunity to | |
3990 | * look up the port name another way, e.g. by contacting the switch and listing | |
3991 | * the names of all its ports). | |
c6100d92 BP |
3992 | * |
3993 | * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset | |
3994 | * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit | |
3995 | * range as described in include/openflow/openflow-1.1.h. */ | |
8010100b BP |
3996 | bool |
3997 | ofputil_port_from_string(const char *s, uint16_t *portp) | |
39dc9082 | 3998 | { |
c6100d92 BP |
3999 | unsigned int port32; |
4000 | ||
8010100b | 4001 | *portp = 0; |
c6100d92 | 4002 | if (str_to_uint(s, 10, &port32)) { |
e3432ee9 | 4003 | if (port32 < OFPP_MAX) { |
8010100b BP |
4004 | *portp = port32; |
4005 | return true; | |
c6100d92 BP |
4006 | } else if (port32 < OFPP_FIRST_RESV) { |
4007 | VLOG_WARN("port %u is a reserved OF1.0 port number that will " | |
4008 | "be translated to %u when talking to an OF1.1 or " | |
4009 | "later controller", port32, port32 + OFPP11_OFFSET); | |
8010100b BP |
4010 | *portp = port32; |
4011 | return true; | |
c6100d92 BP |
4012 | } else if (port32 <= OFPP_LAST_RESV) { |
4013 | struct ds s; | |
4014 | ||
4015 | ds_init(&s); | |
4016 | ofputil_format_port(port32, &s); | |
fd38af85 BP |
4017 | VLOG_WARN_ONCE("referring to port %s as %u is deprecated for " |
4018 | "compatibility with future versions of OpenFlow", | |
4019 | ds_cstr(&s), port32); | |
c6100d92 BP |
4020 | ds_destroy(&s); |
4021 | ||
8010100b BP |
4022 | *portp = port32; |
4023 | return true; | |
c6100d92 BP |
4024 | } else if (port32 < OFPP11_MAX) { |
4025 | VLOG_WARN("port %u is outside the supported range 0 through " | |
4026 | "%"PRIx16"or 0x%x through 0x%"PRIx32, port32, | |
4027 | UINT16_MAX, (unsigned int) OFPP11_MAX, UINT32_MAX); | |
8010100b | 4028 | return false; |
c6100d92 | 4029 | } else { |
8010100b BP |
4030 | *portp = port32 - OFPP11_OFFSET; |
4031 | return true; | |
c6100d92 BP |
4032 | } |
4033 | } else { | |
4034 | struct pair { | |
4035 | const char *name; | |
4036 | uint16_t value; | |
4037 | }; | |
4038 | static const struct pair pairs[] = { | |
39dc9082 | 4039 | #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME}, |
7f05e7ab | 4040 | OFPUTIL_NAMED_PORTS_WITH_NONE |
39dc9082 | 4041 | #undef OFPUTIL_NAMED_PORT |
c6100d92 BP |
4042 | }; |
4043 | const struct pair *p; | |
39dc9082 | 4044 | |
c6100d92 BP |
4045 | for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) { |
4046 | if (!strcasecmp(s, p->name)) { | |
8010100b BP |
4047 | *portp = p->value; |
4048 | return true; | |
c6100d92 | 4049 | } |
39dc9082 | 4050 | } |
8010100b | 4051 | return false; |
39dc9082 | 4052 | } |
39dc9082 BP |
4053 | } |
4054 | ||
4055 | /* Appends to 's' a string representation of the OpenFlow port number 'port'. | |
4056 | * Most ports' string representation is just the port number, but for special | |
4057 | * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */ | |
4058 | void | |
4059 | ofputil_format_port(uint16_t port, struct ds *s) | |
4060 | { | |
4061 | const char *name; | |
4062 | ||
4063 | switch (port) { | |
4064 | #define OFPUTIL_NAMED_PORT(NAME) case OFPP_##NAME: name = #NAME; break; | |
4065 | OFPUTIL_NAMED_PORTS | |
4066 | #undef OFPUTIL_NAMED_PORT | |
4067 | ||
4068 | default: | |
4069 | ds_put_format(s, "%"PRIu16, port); | |
4070 | return; | |
4071 | } | |
4072 | ds_put_cstr(s, name); | |
4073 | } | |
4074 | ||
2be393ed JP |
4075 | /* Given a buffer 'b' that contains an array of OpenFlow ports of type |
4076 | * 'ofp_version', tries to pull the first element from the array. If | |
4077 | * successful, initializes '*pp' with an abstract representation of the | |
4078 | * port and returns 0. If no ports remain to be decoded, returns EOF. | |
4079 | * On an error, returns a positive OFPERR_* value. */ | |
4080 | int | |
2e3fa633 | 4081 | ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b, |
2be393ed JP |
4082 | struct ofputil_phy_port *pp) |
4083 | { | |
2e3fa633 SH |
4084 | switch (ofp_version) { |
4085 | case OFP10_VERSION: { | |
2be393ed JP |
4086 | const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp); |
4087 | return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF; | |
2e3fa633 SH |
4088 | } |
4089 | case OFP11_VERSION: | |
2e1ae200 JR |
4090 | case OFP12_VERSION: |
4091 | case OFP13_VERSION: { | |
2be393ed JP |
4092 | const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op); |
4093 | return op ? ofputil_decode_ofp11_port(pp, op) : EOF; | |
4094 | } | |
2e3fa633 SH |
4095 | default: |
4096 | NOT_REACHED(); | |
4097 | } | |
2be393ed JP |
4098 | } |
4099 | ||
4100 | /* Given a buffer 'b' that contains an array of OpenFlow ports of type | |
4101 | * 'ofp_version', returns the number of elements. */ | |
4102 | size_t ofputil_count_phy_ports(uint8_t ofp_version, struct ofpbuf *b) | |
4103 | { | |
5b5a3a67 | 4104 | return b->size / ofputil_get_phy_port_size(ofp_version); |
2be393ed JP |
4105 | } |
4106 | ||
e23ae585 | 4107 | /* Returns the 'enum ofputil_action_code' corresponding to 'name' (e.g. if |
08f94c0e | 4108 | * 'name' is "output" then the return value is OFPUTIL_OFPAT10_OUTPUT), or -1 if |
e23ae585 BP |
4109 | * 'name' is not the name of any action. |
4110 | * | |
4111 | * ofp-util.def lists the mapping from names to action. */ | |
4112 | int | |
4113 | ofputil_action_code_from_name(const char *name) | |
4114 | { | |
4115 | static const char *names[OFPUTIL_N_ACTIONS] = { | |
690a61c5 | 4116 | NULL, |
3ddcaf2d BP |
4117 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) NAME, |
4118 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME, | |
4119 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME, | |
e23ae585 BP |
4120 | #include "ofp-util.def" |
4121 | }; | |
4122 | ||
4123 | const char **p; | |
4124 | ||
4125 | for (p = names; p < &names[ARRAY_SIZE(names)]; p++) { | |
4126 | if (*p && !strcasecmp(name, *p)) { | |
4127 | return p - names; | |
4128 | } | |
4129 | } | |
4130 | return -1; | |
4131 | } | |
4132 | ||
93996add BP |
4133 | /* Appends an action of the type specified by 'code' to 'buf' and returns the |
4134 | * action. Initializes the parts of 'action' that identify it as having type | |
4135 | * <ENUM> and length 'sizeof *action' and zeros the rest. For actions that | |
4136 | * have variable length, the length used and cleared is that of struct | |
4137 | * <STRUCT>. */ | |
4138 | void * | |
4139 | ofputil_put_action(enum ofputil_action_code code, struct ofpbuf *buf) | |
4140 | { | |
4141 | switch (code) { | |
690a61c5 BP |
4142 | case OFPUTIL_ACTION_INVALID: |
4143 | NOT_REACHED(); | |
4144 | ||
3ddcaf2d BP |
4145 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \ |
4146 | case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf); | |
4147 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
93996add BP |
4148 | case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf); |
4149 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
4150 | case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf); | |
4151 | #include "ofp-util.def" | |
4152 | } | |
4153 | NOT_REACHED(); | |
4154 | } | |
4155 | ||
08f94c0e | 4156 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \ |
93996add BP |
4157 | void \ |
4158 | ofputil_init_##ENUM(struct STRUCT *s) \ | |
4159 | { \ | |
4160 | memset(s, 0, sizeof *s); \ | |
4161 | s->type = htons(ENUM); \ | |
4162 | s->len = htons(sizeof *s); \ | |
4163 | } \ | |
4164 | \ | |
4165 | struct STRUCT * \ | |
4166 | ofputil_put_##ENUM(struct ofpbuf *buf) \ | |
4167 | { \ | |
4168 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
4169 | ofputil_init_##ENUM(s); \ | |
4170 | return s; \ | |
4171 | } | |
3ddcaf2d BP |
4172 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
4173 | OFPAT10_ACTION(ENUM, STRUCT, NAME) | |
93996add BP |
4174 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
4175 | void \ | |
4176 | ofputil_init_##ENUM(struct STRUCT *s) \ | |
4177 | { \ | |
4178 | memset(s, 0, sizeof *s); \ | |
08f94c0e | 4179 | s->type = htons(OFPAT10_VENDOR); \ |
93996add BP |
4180 | s->len = htons(sizeof *s); \ |
4181 | s->vendor = htonl(NX_VENDOR_ID); \ | |
4182 | s->subtype = htons(ENUM); \ | |
4183 | } \ | |
4184 | \ | |
4185 | struct STRUCT * \ | |
4186 | ofputil_put_##ENUM(struct ofpbuf *buf) \ | |
4187 | { \ | |
4188 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
4189 | ofputil_init_##ENUM(s); \ | |
4190 | return s; \ | |
4191 | } | |
4192 | #include "ofp-util.def" | |
4193 | ||
3cbd9931 | 4194 | static void |
81a76618 | 4195 | ofputil_normalize_match__(struct match *match, bool may_log) |
b459a924 BP |
4196 | { |
4197 | enum { | |
4198 | MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */ | |
4199 | MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */ | |
4200 | MAY_NW_PROTO = 1 << 2, /* nw_proto */ | |
a61680c6 | 4201 | MAY_IPVx = 1 << 3, /* tos, frag, ttl */ |
b459a924 BP |
4202 | MAY_ARP_SHA = 1 << 4, /* arp_sha */ |
4203 | MAY_ARP_THA = 1 << 5, /* arp_tha */ | |
d78477ec | 4204 | MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */ |
b459a924 BP |
4205 | MAY_ND_TARGET = 1 << 7 /* nd_target */ |
4206 | } may_match; | |
4207 | ||
4208 | struct flow_wildcards wc; | |
4209 | ||
4210 | /* Figure out what fields may be matched. */ | |
81a76618 | 4211 | if (match->flow.dl_type == htons(ETH_TYPE_IP)) { |
9e44d715 | 4212 | may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR; |
81a76618 BP |
4213 | if (match->flow.nw_proto == IPPROTO_TCP || |
4214 | match->flow.nw_proto == IPPROTO_UDP || | |
4215 | match->flow.nw_proto == IPPROTO_ICMP) { | |
b459a924 BP |
4216 | may_match |= MAY_TP_ADDR; |
4217 | } | |
81a76618 | 4218 | } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) { |
d78477ec | 4219 | may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6; |
81a76618 BP |
4220 | if (match->flow.nw_proto == IPPROTO_TCP || |
4221 | match->flow.nw_proto == IPPROTO_UDP) { | |
b459a924 | 4222 | may_match |= MAY_TP_ADDR; |
81a76618 | 4223 | } else if (match->flow.nw_proto == IPPROTO_ICMPV6) { |
b459a924 | 4224 | may_match |= MAY_TP_ADDR; |
81a76618 | 4225 | if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) { |
b459a924 | 4226 | may_match |= MAY_ND_TARGET | MAY_ARP_SHA; |
81a76618 | 4227 | } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) { |
b459a924 BP |
4228 | may_match |= MAY_ND_TARGET | MAY_ARP_THA; |
4229 | } | |
4230 | } | |
8087f5ff MM |
4231 | } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) || |
4232 | match->flow.dl_type == htons(ETH_TYPE_RARP)) { | |
27527aa0 | 4233 | may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA; |
1c0b7503 | 4234 | } else { |
b459a924 BP |
4235 | may_match = 0; |
4236 | } | |
4237 | ||
4238 | /* Clear the fields that may not be matched. */ | |
81a76618 | 4239 | wc = match->wc; |
b459a924 | 4240 | if (!(may_match & MAY_NW_ADDR)) { |
26720e24 | 4241 | wc.masks.nw_src = wc.masks.nw_dst = htonl(0); |
b459a924 BP |
4242 | } |
4243 | if (!(may_match & MAY_TP_ADDR)) { | |
26720e24 | 4244 | wc.masks.tp_src = wc.masks.tp_dst = htons(0); |
b459a924 BP |
4245 | } |
4246 | if (!(may_match & MAY_NW_PROTO)) { | |
26720e24 | 4247 | wc.masks.nw_proto = 0; |
b459a924 | 4248 | } |
9e44d715 | 4249 | if (!(may_match & MAY_IPVx)) { |
26720e24 BP |
4250 | wc.masks.nw_tos = 0; |
4251 | wc.masks.nw_ttl = 0; | |
b459a924 BP |
4252 | } |
4253 | if (!(may_match & MAY_ARP_SHA)) { | |
26720e24 | 4254 | memset(wc.masks.arp_sha, 0, ETH_ADDR_LEN); |
b459a924 BP |
4255 | } |
4256 | if (!(may_match & MAY_ARP_THA)) { | |
26720e24 | 4257 | memset(wc.masks.arp_tha, 0, ETH_ADDR_LEN); |
b459a924 | 4258 | } |
d78477ec | 4259 | if (!(may_match & MAY_IPV6)) { |
26720e24 BP |
4260 | wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any; |
4261 | wc.masks.ipv6_label = htonl(0); | |
b459a924 BP |
4262 | } |
4263 | if (!(may_match & MAY_ND_TARGET)) { | |
26720e24 | 4264 | wc.masks.nd_target = in6addr_any; |
b459a924 BP |
4265 | } |
4266 | ||
4267 | /* Log any changes. */ | |
81a76618 | 4268 | if (!flow_wildcards_equal(&wc, &match->wc)) { |
3cbd9931 | 4269 | bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl); |
81a76618 | 4270 | char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL; |
b459a924 | 4271 | |
81a76618 BP |
4272 | match->wc = wc; |
4273 | match_zero_wildcarded_fields(match); | |
b459a924 BP |
4274 | |
4275 | if (log) { | |
81a76618 | 4276 | char *post = match_to_string(match, OFP_DEFAULT_PRIORITY); |
b459a924 BP |
4277 | VLOG_INFO("normalization changed ofp_match, details:"); |
4278 | VLOG_INFO(" pre: %s", pre); | |
4279 | VLOG_INFO("post: %s", post); | |
4280 | free(pre); | |
4281 | free(post); | |
4282 | } | |
fa37b408 | 4283 | } |
3f09c339 | 4284 | } |
26c112c2 | 4285 | |
81a76618 | 4286 | /* "Normalizes" the wildcards in 'match'. That means: |
3cbd9931 BP |
4287 | * |
4288 | * 1. If the type of level N is known, then only the valid fields for that | |
4289 | * level may be specified. For example, ARP does not have a TOS field, | |
81a76618 | 4290 | * so nw_tos must be wildcarded if 'match' specifies an ARP flow. |
3cbd9931 | 4291 | * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and |
81a76618 | 4292 | * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an |
3cbd9931 BP |
4293 | * IPv4 flow. |
4294 | * | |
4295 | * 2. If the type of level N is not known (or not understood by Open | |
4296 | * vSwitch), then no fields at all for that level may be specified. For | |
4297 | * example, Open vSwitch does not understand SCTP, an L4 protocol, so the | |
81a76618 | 4298 | * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an |
3cbd9931 BP |
4299 | * SCTP flow. |
4300 | * | |
81a76618 | 4301 | * If this function changes 'match', it logs a rate-limited informational |
3cbd9931 BP |
4302 | * message. */ |
4303 | void | |
81a76618 | 4304 | ofputil_normalize_match(struct match *match) |
3cbd9931 | 4305 | { |
81a76618 | 4306 | ofputil_normalize_match__(match, true); |
3cbd9931 BP |
4307 | } |
4308 | ||
81a76618 BP |
4309 | /* Same as ofputil_normalize_match() without the logging. Thus, this function |
4310 | * is suitable for a program's internal use, whereas ofputil_normalize_match() | |
3cbd9931 BP |
4311 | * sense for use on flows received from elsewhere (so that a bug in the program |
4312 | * that sent them can be reported and corrected). */ | |
4313 | void | |
81a76618 | 4314 | ofputil_normalize_match_quiet(struct match *match) |
3cbd9931 | 4315 | { |
81a76618 | 4316 | ofputil_normalize_match__(match, false); |
3cbd9931 BP |
4317 | } |
4318 | ||
0ff22822 BP |
4319 | /* Parses a key or a key-value pair from '*stringp'. |
4320 | * | |
4321 | * On success: Stores the key into '*keyp'. Stores the value, if present, into | |
4322 | * '*valuep', otherwise an empty string. Advances '*stringp' past the end of | |
4323 | * the key-value pair, preparing it for another call. '*keyp' and '*valuep' | |
4324 | * are substrings of '*stringp' created by replacing some of its bytes by null | |
4325 | * terminators. Returns true. | |
4326 | * | |
4327 | * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to | |
4328 | * NULL and returns false. */ | |
4329 | bool | |
4330 | ofputil_parse_key_value(char **stringp, char **keyp, char **valuep) | |
4331 | { | |
4332 | char *pos, *key, *value; | |
4333 | size_t key_len; | |
4334 | ||
4335 | pos = *stringp; | |
4336 | pos += strspn(pos, ", \t\r\n"); | |
4337 | if (*pos == '\0') { | |
4338 | *keyp = *valuep = NULL; | |
4339 | return false; | |
4340 | } | |
4341 | ||
4342 | key = pos; | |
4343 | key_len = strcspn(pos, ":=(, \t\r\n"); | |
4344 | if (key[key_len] == ':' || key[key_len] == '=') { | |
4345 | /* The value can be separated by a colon. */ | |
4346 | size_t value_len; | |
4347 | ||
4348 | value = key + key_len + 1; | |
4349 | value_len = strcspn(value, ", \t\r\n"); | |
4350 | pos = value + value_len + (value[value_len] != '\0'); | |
4351 | value[value_len] = '\0'; | |
4352 | } else if (key[key_len] == '(') { | |
4353 | /* The value can be surrounded by balanced parentheses. The outermost | |
4354 | * set of parentheses is removed. */ | |
4355 | int level = 1; | |
4356 | size_t value_len; | |
4357 | ||
4358 | value = key + key_len + 1; | |
4359 | for (value_len = 0; level > 0; value_len++) { | |
4360 | switch (value[value_len]) { | |
4361 | case '\0': | |
33cadc50 BP |
4362 | level = 0; |
4363 | break; | |
0ff22822 BP |
4364 | |
4365 | case '(': | |
4366 | level++; | |
4367 | break; | |
4368 | ||
4369 | case ')': | |
4370 | level--; | |
4371 | break; | |
4372 | } | |
4373 | } | |
4374 | value[value_len - 1] = '\0'; | |
4375 | pos = value + value_len; | |
4376 | } else { | |
4377 | /* There might be no value at all. */ | |
4378 | value = key + key_len; /* Will become the empty string below. */ | |
4379 | pos = key + key_len + (key[key_len] != '\0'); | |
4380 | } | |
4381 | key[key_len] = '\0'; | |
4382 | ||
4383 | *stringp = pos; | |
4384 | *keyp = key; | |
4385 | *valuep = value; | |
4386 | return true; | |
4387 | } | |
f8e4867e SH |
4388 | |
4389 | /* Encode a dump ports request for 'port', the encoded message | |
2e1ae200 | 4390 | * will be for Open Flow version 'ofp_version'. Returns message |
f8e4867e SH |
4391 | * as a struct ofpbuf. Returns encoded message on success, NULL on error */ |
4392 | struct ofpbuf * | |
4393 | ofputil_encode_dump_ports_request(enum ofp_version ofp_version, int16_t port) | |
4394 | { | |
4395 | struct ofpbuf *request; | |
4396 | ||
4397 | switch (ofp_version) { | |
4398 | case OFP10_VERSION: { | |
4399 | struct ofp10_port_stats_request *req; | |
4400 | request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0); | |
4401 | req = ofpbuf_put_zeros(request, sizeof *req); | |
4402 | req->port_no = htons(port); | |
4403 | break; | |
4404 | } | |
4405 | case OFP11_VERSION: | |
2e1ae200 JR |
4406 | case OFP12_VERSION: |
4407 | case OFP13_VERSION: { | |
f8e4867e SH |
4408 | struct ofp11_port_stats_request *req; |
4409 | request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0); | |
4410 | req = ofpbuf_put_zeros(request, sizeof *req); | |
4411 | req->port_no = ofputil_port_to_ofp11(port); | |
4412 | break; | |
4413 | } | |
4414 | default: | |
4415 | NOT_REACHED(); | |
4416 | } | |
4417 | ||
4418 | return request; | |
4419 | } | |
4420 | ||
4421 | static void | |
4422 | ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops, | |
4423 | struct ofp10_port_stats *ps10) | |
4424 | { | |
4425 | ps10->port_no = htons(ops->port_no); | |
4426 | memset(ps10->pad, 0, sizeof ps10->pad); | |
4427 | put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets)); | |
4428 | put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets)); | |
4429 | put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes)); | |
4430 | put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes)); | |
4431 | put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped)); | |
4432 | put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped)); | |
4433 | put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors)); | |
4434 | put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors)); | |
4435 | put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors)); | |
4436 | put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors)); | |
4437 | put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors)); | |
4438 | put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions)); | |
4439 | } | |
4440 | ||
4441 | static void | |
4442 | ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops, | |
4443 | struct ofp11_port_stats *ps11) | |
4444 | { | |
4445 | ps11->port_no = ofputil_port_to_ofp11(ops->port_no); | |
4446 | memset(ps11->pad, 0, sizeof ps11->pad); | |
4447 | ps11->rx_packets = htonll(ops->stats.rx_packets); | |
4448 | ps11->tx_packets = htonll(ops->stats.tx_packets); | |
4449 | ps11->rx_bytes = htonll(ops->stats.rx_bytes); | |
4450 | ps11->tx_bytes = htonll(ops->stats.tx_bytes); | |
4451 | ps11->rx_dropped = htonll(ops->stats.rx_dropped); | |
4452 | ps11->tx_dropped = htonll(ops->stats.tx_dropped); | |
4453 | ps11->rx_errors = htonll(ops->stats.rx_errors); | |
4454 | ps11->tx_errors = htonll(ops->stats.tx_errors); | |
4455 | ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors); | |
4456 | ps11->rx_over_err = htonll(ops->stats.rx_over_errors); | |
4457 | ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors); | |
4458 | ps11->collisions = htonll(ops->stats.collisions); | |
4459 | } | |
4460 | ||
2e1ae200 JR |
4461 | static void |
4462 | ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops, | |
4463 | struct ofp13_port_stats *ps13) | |
4464 | { | |
4465 | ofputil_port_stats_to_ofp11(ops, &ps13->ps); | |
4466 | ||
4467 | /* OF 1.3 adds duration fields */ | |
4468 | /* FIXME: Need to implement port alive duration (sec + nsec) */ | |
4469 | ps13->duration_sec = htonl(~0); | |
4470 | ps13->duration_nsec = htonl(~0); | |
4471 | } | |
4472 | ||
4473 | ||
ad4c35fe | 4474 | /* Encode a ports stat for 'ops' and append it to 'replies'. */ |
f8e4867e SH |
4475 | void |
4476 | ofputil_append_port_stat(struct list *replies, | |
4477 | const struct ofputil_port_stats *ops) | |
4478 | { | |
4479 | struct ofpbuf *msg = ofpbuf_from_list(list_back(replies)); | |
4480 | struct ofp_header *oh = msg->data; | |
4481 | ||
4482 | switch ((enum ofp_version)oh->version) { | |
2e1ae200 JR |
4483 | case OFP13_VERSION: { |
4484 | struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply); | |
4485 | ofputil_port_stats_to_ofp13(ops, reply); | |
4486 | break; | |
4487 | } | |
f8e4867e SH |
4488 | case OFP12_VERSION: |
4489 | case OFP11_VERSION: { | |
4490 | struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply); | |
4491 | ofputil_port_stats_to_ofp11(ops, reply); | |
4492 | break; | |
4493 | } | |
4494 | ||
4495 | case OFP10_VERSION: { | |
4496 | struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply); | |
4497 | ofputil_port_stats_to_ofp10(ops, reply); | |
4498 | break; | |
4499 | } | |
4500 | ||
4501 | default: | |
4502 | NOT_REACHED(); | |
4503 | } | |
4504 | } | |
4505 | ||
4506 | static enum ofperr | |
4507 | ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops, | |
4508 | const struct ofp10_port_stats *ps10) | |
4509 | { | |
4510 | memset(ops, 0, sizeof *ops); | |
4511 | ||
4512 | ops->port_no = ntohs(ps10->port_no); | |
4513 | ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets)); | |
4514 | ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets)); | |
4515 | ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes)); | |
4516 | ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes)); | |
4517 | ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped)); | |
4518 | ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped)); | |
4519 | ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors)); | |
4520 | ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors)); | |
4521 | ops->stats.rx_frame_errors = | |
4522 | ntohll(get_32aligned_be64(&ps10->rx_frame_err)); | |
4523 | ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err)); | |
4524 | ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err)); | |
4525 | ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions)); | |
4526 | ||
4527 | return 0; | |
4528 | } | |
4529 | ||
4530 | static enum ofperr | |
4531 | ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops, | |
4532 | const struct ofp11_port_stats *ps11) | |
4533 | { | |
4534 | enum ofperr error; | |
4535 | ||
4536 | memset(ops, 0, sizeof *ops); | |
4537 | error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no); | |
4538 | if (error) { | |
4539 | return error; | |
4540 | } | |
4541 | ||
4542 | ops->stats.rx_packets = ntohll(ps11->rx_packets); | |
4543 | ops->stats.tx_packets = ntohll(ps11->tx_packets); | |
4544 | ops->stats.rx_bytes = ntohll(ps11->rx_bytes); | |
4545 | ops->stats.tx_bytes = ntohll(ps11->tx_bytes); | |
4546 | ops->stats.rx_dropped = ntohll(ps11->rx_dropped); | |
4547 | ops->stats.tx_dropped = ntohll(ps11->tx_dropped); | |
4548 | ops->stats.rx_errors = ntohll(ps11->rx_errors); | |
4549 | ops->stats.tx_errors = ntohll(ps11->tx_errors); | |
4550 | ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err); | |
4551 | ops->stats.rx_over_errors = ntohll(ps11->rx_over_err); | |
4552 | ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err); | |
4553 | ops->stats.collisions = ntohll(ps11->collisions); | |
4554 | ||
4555 | return 0; | |
4556 | } | |
4557 | ||
2e1ae200 JR |
4558 | static enum ofperr |
4559 | ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops, | |
4560 | const struct ofp13_port_stats *ps13) | |
4561 | { | |
4562 | enum ofperr error = | |
4563 | ofputil_port_stats_from_ofp11(ops, &ps13->ps); | |
4564 | if (!error) { | |
4565 | /* FIXME: Get ps13->duration_sec and ps13->duration_nsec, | |
4566 | * Add to netdev_stats? */ | |
4567 | } | |
4568 | ||
4569 | return error; | |
4570 | } | |
4571 | ||
4572 | ||
f8e4867e SH |
4573 | /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY |
4574 | * message 'oh'. */ | |
4575 | size_t | |
4576 | ofputil_count_port_stats(const struct ofp_header *oh) | |
4577 | { | |
4578 | struct ofpbuf b; | |
4579 | ||
4580 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); | |
4581 | ofpraw_pull_assert(&b); | |
4582 | ||
4583 | BUILD_ASSERT(sizeof(struct ofp10_port_stats) == | |
4584 | sizeof(struct ofp11_port_stats)); | |
4585 | return b.size / sizeof(struct ofp10_port_stats); | |
4586 | } | |
4587 | ||
4588 | /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract | |
4589 | * ofputil_port_stats in 'ps'. | |
4590 | * | |
4591 | * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow | |
4592 | * message. Calling this function multiple times for a single 'msg' iterates | |
4593 | * through the replies. The caller must initially leave 'msg''s layer pointers | |
4594 | * null and not modify them between calls. | |
4595 | * | |
4596 | * Returns 0 if successful, EOF if no replies were left in this 'msg', | |
4597 | * otherwise a positive errno value. */ | |
4598 | int | |
4599 | ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg) | |
4600 | { | |
4601 | enum ofperr error; | |
4602 | enum ofpraw raw; | |
4603 | ||
4604 | error = (msg->l2 | |
4605 | ? ofpraw_decode(&raw, msg->l2) | |
4606 | : ofpraw_pull(&raw, msg)); | |
4607 | if (error) { | |
4608 | return error; | |
4609 | } | |
4610 | ||
4611 | if (!msg->size) { | |
4612 | return EOF; | |
2e1ae200 JR |
4613 | } else if (raw == OFPRAW_OFPST13_PORT_REPLY) { |
4614 | const struct ofp13_port_stats *ps13; | |
4615 | ||
4616 | ps13 = ofpbuf_try_pull(msg, sizeof *ps13); | |
4617 | if (!ps13) { | |
4618 | goto bad_len; | |
4619 | } | |
4620 | return ofputil_port_stats_from_ofp13(ps, ps13); | |
f8e4867e SH |
4621 | } else if (raw == OFPRAW_OFPST11_PORT_REPLY) { |
4622 | const struct ofp11_port_stats *ps11; | |
4623 | ||
4624 | ps11 = ofpbuf_try_pull(msg, sizeof *ps11); | |
4625 | if (!ps11) { | |
2e1ae200 | 4626 | goto bad_len; |
f8e4867e SH |
4627 | } |
4628 | return ofputil_port_stats_from_ofp11(ps, ps11); | |
4629 | } else if (raw == OFPRAW_OFPST10_PORT_REPLY) { | |
4630 | const struct ofp10_port_stats *ps10; | |
4631 | ||
4632 | ps10 = ofpbuf_try_pull(msg, sizeof *ps10); | |
4633 | if (!ps10) { | |
2e1ae200 | 4634 | goto bad_len; |
f8e4867e SH |
4635 | } |
4636 | return ofputil_port_stats_from_ofp10(ps, ps10); | |
4637 | } else { | |
4638 | NOT_REACHED(); | |
4639 | } | |
4640 | ||
2e1ae200 JR |
4641 | bad_len: |
4642 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %zu leftover " | |
4643 | "bytes at end", msg->size); | |
4644 | return OFPERR_OFPBRC_BAD_LEN; | |
f8e4867e SH |
4645 | } |
4646 | ||
4647 | /* Parse a port status request message into a 16 bit OpenFlow 1.0 | |
4648 | * port number and stores the latter in '*ofp10_port'. | |
4649 | * Returns 0 if successful, otherwise an OFPERR_* number. */ | |
4650 | enum ofperr | |
4651 | ofputil_decode_port_stats_request(const struct ofp_header *request, | |
4652 | uint16_t *ofp10_port) | |
4653 | { | |
4654 | switch ((enum ofp_version)request->version) { | |
2e1ae200 | 4655 | case OFP13_VERSION: |
f8e4867e SH |
4656 | case OFP12_VERSION: |
4657 | case OFP11_VERSION: { | |
4658 | const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request); | |
4659 | return ofputil_port_from_ofp11(psr11->port_no, ofp10_port); | |
4660 | } | |
4661 | ||
4662 | case OFP10_VERSION: { | |
4663 | const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request); | |
4664 | *ofp10_port = ntohs(psr10->port_no); | |
4665 | return 0; | |
4666 | } | |
4667 | ||
4668 | default: | |
4669 | NOT_REACHED(); | |
4670 | } | |
4671 | } | |
64626975 SH |
4672 | |
4673 | /* Parse a queue status request message into 'oqsr'. | |
4674 | * Returns 0 if successful, otherwise an OFPERR_* number. */ | |
4675 | enum ofperr | |
4676 | ofputil_decode_queue_stats_request(const struct ofp_header *request, | |
4677 | struct ofputil_queue_stats_request *oqsr) | |
4678 | { | |
4679 | switch ((enum ofp_version)request->version) { | |
2e1ae200 | 4680 | case OFP13_VERSION: |
64626975 SH |
4681 | case OFP12_VERSION: |
4682 | case OFP11_VERSION: { | |
4683 | const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request); | |
4684 | oqsr->queue_id = ntohl(qsr11->queue_id); | |
4685 | return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no); | |
4686 | } | |
4687 | ||
4688 | case OFP10_VERSION: { | |
7f05e7ab JR |
4689 | const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request); |
4690 | oqsr->queue_id = ntohl(qsr10->queue_id); | |
4691 | oqsr->port_no = ntohs(qsr10->port_no); | |
4692 | /* OF 1.0 uses OFPP_ALL for OFPP_ANY */ | |
4693 | if (oqsr->port_no == OFPP_ALL) { | |
4694 | oqsr->port_no = OFPP_ANY; | |
4695 | } | |
64626975 SH |
4696 | return 0; |
4697 | } | |
4698 | ||
4699 | default: | |
4700 | NOT_REACHED(); | |
4701 | } | |
4702 | } | |
4703 | ||
4704 | /* Encode a queue statsrequest for 'oqsr', the encoded message | |
4705 | * will be fore Open Flow version 'ofp_version'. Returns message | |
4706 | * as a struct ofpbuf. Returns encoded message on success, NULL on error */ | |
4707 | struct ofpbuf * | |
4708 | ofputil_encode_queue_stats_request(enum ofp_version ofp_version, | |
4709 | const struct ofputil_queue_stats_request *oqsr) | |
4710 | { | |
4711 | struct ofpbuf *request; | |
4712 | ||
4713 | switch (ofp_version) { | |
4714 | case OFP11_VERSION: | |
2e1ae200 JR |
4715 | case OFP12_VERSION: |
4716 | case OFP13_VERSION: { | |
64626975 SH |
4717 | struct ofp11_queue_stats_request *req; |
4718 | request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0); | |
4719 | req = ofpbuf_put_zeros(request, sizeof *req); | |
4720 | req->port_no = ofputil_port_to_ofp11(oqsr->port_no); | |
4721 | req->queue_id = htonl(oqsr->queue_id); | |
4722 | break; | |
4723 | } | |
4724 | case OFP10_VERSION: { | |
4725 | struct ofp10_queue_stats_request *req; | |
4726 | request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0); | |
4727 | req = ofpbuf_put_zeros(request, sizeof *req); | |
7f05e7ab JR |
4728 | /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */ |
4729 | req->port_no = htons(oqsr->port_no == OFPP_ANY | |
4730 | ? OFPP_ALL : oqsr->port_no); | |
64626975 SH |
4731 | req->queue_id = htonl(oqsr->queue_id); |
4732 | break; | |
4733 | } | |
4734 | default: | |
4735 | NOT_REACHED(); | |
4736 | } | |
4737 | ||
4738 | return request; | |
4739 | } | |
4740 | ||
4741 | /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY | |
4742 | * message 'oh'. */ | |
4743 | size_t | |
4744 | ofputil_count_queue_stats(const struct ofp_header *oh) | |
4745 | { | |
4746 | struct ofpbuf b; | |
4747 | ||
4748 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); | |
4749 | ofpraw_pull_assert(&b); | |
4750 | ||
4751 | BUILD_ASSERT(sizeof(struct ofp10_queue_stats) == | |
4752 | sizeof(struct ofp11_queue_stats)); | |
4753 | return b.size / sizeof(struct ofp10_queue_stats); | |
4754 | } | |
4755 | ||
4756 | static enum ofperr | |
4757 | ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs, | |
4758 | const struct ofp10_queue_stats *qs10) | |
4759 | { | |
4760 | oqs->port_no = ntohs(qs10->port_no); | |
4761 | oqs->queue_id = ntohl(qs10->queue_id); | |
4762 | oqs->stats.tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes)); | |
4763 | oqs->stats.tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets)); | |
4764 | oqs->stats.tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors)); | |
4765 | ||
4766 | return 0; | |
4767 | } | |
4768 | ||
4769 | static enum ofperr | |
4770 | ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs, | |
4771 | const struct ofp11_queue_stats *qs11) | |
4772 | { | |
4773 | enum ofperr error; | |
4774 | ||
4775 | error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no); | |
4776 | if (error) { | |
4777 | return error; | |
4778 | } | |
4779 | ||
4780 | oqs->queue_id = ntohl(qs11->queue_id); | |
4781 | oqs->stats.tx_bytes = ntohll(qs11->tx_bytes); | |
4782 | oqs->stats.tx_packets = ntohll(qs11->tx_packets); | |
4783 | oqs->stats.tx_errors = ntohll(qs11->tx_errors); | |
4784 | ||
4785 | return 0; | |
4786 | } | |
4787 | ||
2e1ae200 JR |
4788 | static enum ofperr |
4789 | ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs, | |
4790 | const struct ofp13_queue_stats *qs13) | |
4791 | { | |
4792 | enum ofperr error | |
4793 | = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs); | |
4794 | if (!error) { | |
4795 | /* FIXME: Get qs13->duration_sec and qs13->duration_nsec, | |
4796 | * Add to netdev_queue_stats? */ | |
4797 | } | |
4798 | ||
4799 | return error; | |
4800 | } | |
4801 | ||
64626975 SH |
4802 | /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract |
4803 | * ofputil_queue_stats in 'qs'. | |
4804 | * | |
4805 | * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow | |
4806 | * message. Calling this function multiple times for a single 'msg' iterates | |
4807 | * through the replies. The caller must initially leave 'msg''s layer pointers | |
4808 | * null and not modify them between calls. | |
4809 | * | |
4810 | * Returns 0 if successful, EOF if no replies were left in this 'msg', | |
4811 | * otherwise a positive errno value. */ | |
4812 | int | |
4813 | ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg) | |
4814 | { | |
4815 | enum ofperr error; | |
4816 | enum ofpraw raw; | |
4817 | ||
4818 | error = (msg->l2 | |
4819 | ? ofpraw_decode(&raw, msg->l2) | |
4820 | : ofpraw_pull(&raw, msg)); | |
4821 | if (error) { | |
4822 | return error; | |
4823 | } | |
4824 | ||
4825 | if (!msg->size) { | |
4826 | return EOF; | |
2e1ae200 JR |
4827 | } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) { |
4828 | const struct ofp13_queue_stats *qs13; | |
4829 | ||
4830 | qs13 = ofpbuf_try_pull(msg, sizeof *qs13); | |
4831 | if (!qs13) { | |
4832 | goto bad_len; | |
4833 | } | |
4834 | return ofputil_queue_stats_from_ofp13(qs, qs13); | |
64626975 SH |
4835 | } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) { |
4836 | const struct ofp11_queue_stats *qs11; | |
4837 | ||
4838 | qs11 = ofpbuf_try_pull(msg, sizeof *qs11); | |
4839 | if (!qs11) { | |
2e1ae200 | 4840 | goto bad_len; |
64626975 SH |
4841 | } |
4842 | return ofputil_queue_stats_from_ofp11(qs, qs11); | |
4843 | } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) { | |
4844 | const struct ofp10_queue_stats *qs10; | |
4845 | ||
4846 | qs10 = ofpbuf_try_pull(msg, sizeof *qs10); | |
4847 | if (!qs10) { | |
2e1ae200 | 4848 | goto bad_len; |
64626975 SH |
4849 | } |
4850 | return ofputil_queue_stats_from_ofp10(qs, qs10); | |
4851 | } else { | |
4852 | NOT_REACHED(); | |
4853 | } | |
2e1ae200 JR |
4854 | |
4855 | bad_len: | |
4856 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %zu leftover " | |
4857 | "bytes at end", msg->size); | |
4858 | return OFPERR_OFPBRC_BAD_LEN; | |
64626975 SH |
4859 | } |
4860 | ||
4861 | static void | |
4862 | ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs, | |
4863 | struct ofp10_queue_stats *qs10) | |
4864 | { | |
4865 | qs10->port_no = htons(oqs->port_no); | |
4866 | memset(qs10->pad, 0, sizeof qs10->pad); | |
4867 | qs10->queue_id = htonl(oqs->queue_id); | |
4868 | put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->stats.tx_bytes)); | |
4869 | put_32aligned_be64(&qs10->tx_packets, htonll(oqs->stats.tx_packets)); | |
4870 | put_32aligned_be64(&qs10->tx_errors, htonll(oqs->stats.tx_errors)); | |
4871 | } | |
4872 | ||
4873 | static void | |
4874 | ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs, | |
4875 | struct ofp11_queue_stats *qs11) | |
4876 | { | |
4877 | qs11->port_no = ofputil_port_to_ofp11(oqs->port_no); | |
4878 | qs11->queue_id = htonl(oqs->queue_id); | |
4879 | qs11->tx_bytes = htonll(oqs->stats.tx_bytes); | |
4880 | qs11->tx_packets = htonll(oqs->stats.tx_packets); | |
4881 | qs11->tx_errors = htonll(oqs->stats.tx_errors); | |
4882 | } | |
4883 | ||
2e1ae200 JR |
4884 | static void |
4885 | ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs, | |
4886 | struct ofp13_queue_stats *qs13) | |
4887 | { | |
4888 | ofputil_queue_stats_to_ofp11(oqs, &qs13->qs); | |
4889 | /* OF 1.3 adds duration fields */ | |
4890 | /* FIXME: Need to implement queue alive duration (sec + nsec) */ | |
4891 | qs13->duration_sec = htonl(~0); | |
4892 | qs13->duration_nsec = htonl(~0); | |
4893 | } | |
4894 | ||
64626975 SH |
4895 | /* Encode a queue stat for 'oqs' and append it to 'replies'. */ |
4896 | void | |
4897 | ofputil_append_queue_stat(struct list *replies, | |
4898 | const struct ofputil_queue_stats *oqs) | |
4899 | { | |
4900 | struct ofpbuf *msg = ofpbuf_from_list(list_back(replies)); | |
4901 | struct ofp_header *oh = msg->data; | |
4902 | ||
4903 | switch ((enum ofp_version)oh->version) { | |
2e1ae200 JR |
4904 | case OFP13_VERSION: { |
4905 | struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply); | |
4906 | ofputil_queue_stats_to_ofp13(oqs, reply); | |
4907 | break; | |
4908 | } | |
4909 | ||
64626975 SH |
4910 | case OFP12_VERSION: |
4911 | case OFP11_VERSION: { | |
2e1ae200 | 4912 | struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply); |
64626975 SH |
4913 | ofputil_queue_stats_to_ofp11(oqs, reply); |
4914 | break; | |
4915 | } | |
4916 | ||
4917 | case OFP10_VERSION: { | |
2e1ae200 | 4918 | struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply); |
64626975 SH |
4919 | ofputil_queue_stats_to_ofp10(oqs, reply); |
4920 | break; | |
4921 | } | |
4922 | ||
4923 | default: | |
4924 | NOT_REACHED(); | |
4925 | } | |
4926 | } |