]>
Commit | Line | Data |
---|---|---|
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 | { |
e2170cff | 88 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 17); |
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" }, | |
586 | { OFPUTIL_P_OF10_NXM_ANY, "NXM" }, | |
27527aa0 BP |
587 | }; |
588 | #define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs) | |
589 | ||
590 | enum ofputil_protocol ofputil_flow_dump_protocols[] = { | |
85813857 BP |
591 | OFPUTIL_P_OF10_NXM, |
592 | OFPUTIL_P_OF10_STD, | |
27527aa0 BP |
593 | }; |
594 | size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols); | |
595 | ||
596 | /* Returns the ofputil_protocol that is initially in effect on an OpenFlow | |
597 | * connection that has negotiated the given 'version'. 'version' should | |
598 | * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow | |
599 | * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or | |
600 | * outside the valid range. */ | |
601 | enum ofputil_protocol | |
2e3fa633 | 602 | ofputil_protocol_from_ofp_version(enum ofp_version version) |
27527aa0 BP |
603 | { |
604 | switch (version) { | |
2e3fa633 | 605 | case OFP10_VERSION: |
85813857 | 606 | return OFPUTIL_P_OF10_STD; |
2e3fa633 | 607 | case OFP12_VERSION: |
85813857 | 608 | return OFPUTIL_P_OF12_OXM; |
2e3fa633 SH |
609 | case OFP11_VERSION: |
610 | default: | |
611 | return 0; | |
27527aa0 BP |
612 | } |
613 | } | |
614 | ||
44d3732d SH |
615 | /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION, |
616 | * OFP11_VERSION or OFP12_VERSION) that corresponds to 'protocol'. */ | |
2e3fa633 | 617 | enum ofp_version |
9e1fd49b BP |
618 | ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol) |
619 | { | |
620 | switch (protocol) { | |
85813857 BP |
621 | case OFPUTIL_P_OF10_STD: |
622 | case OFPUTIL_P_OF10_STD_TID: | |
623 | case OFPUTIL_P_OF10_NXM: | |
624 | case OFPUTIL_P_OF10_NXM_TID: | |
9e1fd49b | 625 | return OFP10_VERSION; |
85813857 | 626 | case OFPUTIL_P_OF12_OXM: |
44d3732d | 627 | return OFP12_VERSION; |
9e1fd49b BP |
628 | } |
629 | ||
630 | NOT_REACHED(); | |
631 | } | |
632 | ||
27527aa0 BP |
633 | /* Returns true if 'protocol' is a single OFPUTIL_P_* value, false |
634 | * otherwise. */ | |
7fa91113 | 635 | bool |
27527aa0 | 636 | ofputil_protocol_is_valid(enum ofputil_protocol protocol) |
7fa91113 | 637 | { |
27527aa0 BP |
638 | return protocol & OFPUTIL_P_ANY && is_pow2(protocol); |
639 | } | |
640 | ||
641 | /* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id | |
642 | * extension turned on or off if 'enable' is true or false, respectively. | |
643 | * | |
644 | * This extension is only useful for protocols whose "standard" version does | |
645 | * not allow specific tables to be modified. In particular, this is true of | |
646 | * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always | |
647 | * specifies a table ID and so there is no need for such an extension. When | |
648 | * 'protocol' is such a protocol that doesn't need a flow_mod_table_id | |
649 | * extension, this function just returns its 'protocol' argument unchanged | |
650 | * regardless of the value of 'enable'. */ | |
651 | enum ofputil_protocol | |
652 | ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable) | |
653 | { | |
654 | switch (protocol) { | |
85813857 BP |
655 | case OFPUTIL_P_OF10_STD: |
656 | case OFPUTIL_P_OF10_STD_TID: | |
657 | return enable ? OFPUTIL_P_OF10_STD_TID : OFPUTIL_P_OF10_STD; | |
27527aa0 | 658 | |
85813857 BP |
659 | case OFPUTIL_P_OF10_NXM: |
660 | case OFPUTIL_P_OF10_NXM_TID: | |
661 | return enable ? OFPUTIL_P_OF10_NXM_TID : OFPUTIL_P_OF10_NXM; | |
27527aa0 | 662 | |
85813857 BP |
663 | case OFPUTIL_P_OF12_OXM: |
664 | return OFPUTIL_P_OF12_OXM; | |
44d3732d | 665 | |
27527aa0 BP |
666 | default: |
667 | NOT_REACHED(); | |
7fa91113 | 668 | } |
27527aa0 | 669 | } |
7fa91113 | 670 | |
27527aa0 BP |
671 | /* Returns the "base" version of 'protocol'. That is, if 'protocol' includes |
672 | * some extension to a standard protocol version, the return value is the | |
673 | * standard version of that protocol without any extension. If 'protocol' is a | |
674 | * standard protocol version, returns 'protocol' unchanged. */ | |
675 | enum ofputil_protocol | |
676 | ofputil_protocol_to_base(enum ofputil_protocol protocol) | |
677 | { | |
678 | return ofputil_protocol_set_tid(protocol, false); | |
7fa91113 BP |
679 | } |
680 | ||
27527aa0 BP |
681 | /* Returns 'new_base' with any extensions taken from 'cur'. */ |
682 | enum ofputil_protocol | |
683 | ofputil_protocol_set_base(enum ofputil_protocol cur, | |
684 | enum ofputil_protocol new_base) | |
7fa91113 | 685 | { |
27527aa0 BP |
686 | bool tid = (cur & OFPUTIL_P_TID) != 0; |
687 | ||
688 | switch (new_base) { | |
85813857 BP |
689 | case OFPUTIL_P_OF10_STD: |
690 | case OFPUTIL_P_OF10_STD_TID: | |
691 | return ofputil_protocol_set_tid(OFPUTIL_P_OF10_STD, tid); | |
27527aa0 | 692 | |
85813857 BP |
693 | case OFPUTIL_P_OF10_NXM: |
694 | case OFPUTIL_P_OF10_NXM_TID: | |
695 | return ofputil_protocol_set_tid(OFPUTIL_P_OF10_NXM, tid); | |
27527aa0 | 696 | |
85813857 BP |
697 | case OFPUTIL_P_OF12_OXM: |
698 | return ofputil_protocol_set_tid(OFPUTIL_P_OF12_OXM, tid); | |
44d3732d | 699 | |
7fa91113 BP |
700 | default: |
701 | NOT_REACHED(); | |
702 | } | |
703 | } | |
704 | ||
27527aa0 BP |
705 | /* Returns a string form of 'protocol', if a simple form exists (that is, if |
706 | * 'protocol' is either a single protocol or it is a combination of protocols | |
707 | * that have a single abbreviation). Otherwise, returns NULL. */ | |
708 | const char * | |
709 | ofputil_protocol_to_string(enum ofputil_protocol protocol) | |
88ca35ee | 710 | { |
27527aa0 BP |
711 | const struct proto_abbrev *p; |
712 | ||
713 | /* Use a "switch" statement for single-bit names so that we get a compiler | |
714 | * warning if we forget any. */ | |
715 | switch (protocol) { | |
85813857 | 716 | case OFPUTIL_P_OF10_NXM: |
27527aa0 BP |
717 | return "NXM-table_id"; |
718 | ||
85813857 | 719 | case OFPUTIL_P_OF10_NXM_TID: |
27527aa0 BP |
720 | return "NXM+table_id"; |
721 | ||
85813857 | 722 | case OFPUTIL_P_OF10_STD: |
27527aa0 BP |
723 | return "OpenFlow10-table_id"; |
724 | ||
85813857 | 725 | case OFPUTIL_P_OF10_STD_TID: |
27527aa0 | 726 | return "OpenFlow10+table_id"; |
44d3732d | 727 | |
85813857 | 728 | case OFPUTIL_P_OF12_OXM: |
7cd90356 | 729 | return "OXM"; |
27527aa0 BP |
730 | } |
731 | ||
732 | /* Check abbreviations. */ | |
733 | for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) { | |
734 | if (protocol == p->protocol) { | |
735 | return p->name; | |
736 | } | |
737 | } | |
738 | ||
739 | return NULL; | |
740 | } | |
741 | ||
742 | /* Returns a string that represents 'protocols'. The return value might be a | |
743 | * comma-separated list if 'protocols' doesn't have a simple name. The return | |
744 | * value is "none" if 'protocols' is 0. | |
745 | * | |
746 | * The caller must free the returned string (with free()). */ | |
747 | char * | |
748 | ofputil_protocols_to_string(enum ofputil_protocol protocols) | |
749 | { | |
750 | struct ds s; | |
751 | ||
752 | assert(!(protocols & ~OFPUTIL_P_ANY)); | |
753 | if (protocols == 0) { | |
754 | return xstrdup("none"); | |
755 | } | |
756 | ||
757 | ds_init(&s); | |
758 | while (protocols) { | |
759 | const struct proto_abbrev *p; | |
760 | int i; | |
761 | ||
762 | if (s.length) { | |
763 | ds_put_char(&s, ','); | |
764 | } | |
765 | ||
766 | for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) { | |
767 | if ((protocols & p->protocol) == p->protocol) { | |
768 | ds_put_cstr(&s, p->name); | |
769 | protocols &= ~p->protocol; | |
770 | goto match; | |
771 | } | |
772 | } | |
773 | ||
774 | for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) { | |
775 | enum ofputil_protocol bit = 1u << i; | |
776 | ||
777 | if (protocols & bit) { | |
778 | ds_put_cstr(&s, ofputil_protocol_to_string(bit)); | |
779 | protocols &= ~bit; | |
780 | goto match; | |
781 | } | |
782 | } | |
783 | NOT_REACHED(); | |
784 | ||
785 | match: ; | |
786 | } | |
787 | return ds_steal_cstr(&s); | |
788 | } | |
789 | ||
790 | static enum ofputil_protocol | |
791 | ofputil_protocol_from_string__(const char *s, size_t n) | |
792 | { | |
793 | const struct proto_abbrev *p; | |
794 | int i; | |
795 | ||
796 | for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) { | |
797 | enum ofputil_protocol bit = 1u << i; | |
798 | const char *name = ofputil_protocol_to_string(bit); | |
799 | ||
800 | if (name && n == strlen(name) && !strncasecmp(s, name, n)) { | |
801 | return bit; | |
802 | } | |
803 | } | |
804 | ||
805 | for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) { | |
806 | if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) { | |
807 | return p->protocol; | |
808 | } | |
809 | } | |
810 | ||
811 | return 0; | |
812 | } | |
813 | ||
814 | /* Returns the nonempty set of protocols represented by 's', which can be a | |
815 | * single protocol name or abbreviation or a comma-separated list of them. | |
816 | * | |
817 | * Aborts the program with an error message if 's' is invalid. */ | |
818 | enum ofputil_protocol | |
819 | ofputil_protocols_from_string(const char *s) | |
820 | { | |
821 | const char *orig_s = s; | |
822 | enum ofputil_protocol protocols; | |
823 | ||
824 | protocols = 0; | |
825 | while (*s) { | |
826 | enum ofputil_protocol p; | |
827 | size_t n; | |
828 | ||
829 | n = strcspn(s, ","); | |
830 | if (n == 0) { | |
831 | s++; | |
832 | continue; | |
833 | } | |
834 | ||
835 | p = ofputil_protocol_from_string__(s, n); | |
836 | if (!p) { | |
837 | ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s); | |
838 | } | |
839 | protocols |= p; | |
840 | ||
841 | s += n; | |
842 | } | |
843 | ||
844 | if (!protocols) { | |
845 | ovs_fatal(0, "%s: no flow protocol specified", orig_s); | |
846 | } | |
847 | return protocols; | |
88ca35ee BP |
848 | } |
849 | ||
03e1125c SH |
850 | static enum ofp_version |
851 | ofputil_version_from_string(const char *s) | |
852 | { | |
853 | if (!strcasecmp(s, "OpenFlow10")) { | |
854 | return OFP10_VERSION; | |
855 | } | |
856 | if (!strcasecmp(s, "OpenFlow11")) { | |
857 | return OFP11_VERSION; | |
858 | } | |
859 | if (!strcasecmp(s, "OpenFlow12")) { | |
860 | return OFP12_VERSION; | |
861 | } | |
862 | VLOG_FATAL("Unknown OpenFlow version: \"%s\"", s); | |
863 | } | |
864 | ||
865 | static bool | |
866 | is_delimiter(char c) | |
867 | { | |
868 | return isspace(c) || c == ','; | |
869 | } | |
870 | ||
871 | uint32_t | |
872 | ofputil_versions_from_string(const char *s) | |
873 | { | |
874 | size_t i = 0; | |
875 | uint32_t bitmap = 0; | |
876 | ||
877 | while (s[i]) { | |
878 | size_t j; | |
879 | enum ofp_version version; | |
880 | char *key; | |
881 | ||
882 | if (is_delimiter(s[i])) { | |
883 | i++; | |
884 | continue; | |
885 | } | |
886 | j = 0; | |
887 | while (s[i + j] && !is_delimiter(s[i + j])) { | |
888 | j++; | |
889 | } | |
890 | key = xmemdup0(s + i, j); | |
891 | version = ofputil_version_from_string(key); | |
892 | free(key); | |
893 | bitmap |= 1u << version; | |
894 | i += j; | |
895 | } | |
896 | ||
897 | return bitmap; | |
898 | } | |
899 | ||
900 | const char * | |
901 | ofputil_version_to_string(enum ofp_version ofp_version) | |
902 | { | |
903 | switch (ofp_version) { | |
904 | case OFP10_VERSION: | |
905 | return "OpenFlow10"; | |
906 | case OFP11_VERSION: | |
907 | return "OpenFlow11"; | |
908 | case OFP12_VERSION: | |
909 | return "OpenFlow12"; | |
910 | default: | |
911 | NOT_REACHED(); | |
912 | } | |
913 | } | |
914 | ||
54834960 EJ |
915 | bool |
916 | ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format) | |
917 | { | |
918 | switch (packet_in_format) { | |
919 | case NXPIF_OPENFLOW10: | |
920 | case NXPIF_NXM: | |
921 | return true; | |
922 | } | |
923 | ||
924 | return false; | |
925 | } | |
926 | ||
927 | const char * | |
928 | ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format) | |
929 | { | |
930 | switch (packet_in_format) { | |
931 | case NXPIF_OPENFLOW10: | |
932 | return "openflow10"; | |
933 | case NXPIF_NXM: | |
934 | return "nxm"; | |
935 | default: | |
936 | NOT_REACHED(); | |
937 | } | |
938 | } | |
939 | ||
940 | int | |
941 | ofputil_packet_in_format_from_string(const char *s) | |
942 | { | |
943 | return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10 | |
944 | : !strcmp(s, "nxm") ? NXPIF_NXM | |
945 | : -1); | |
946 | } | |
947 | ||
88ca35ee BP |
948 | static bool |
949 | regs_fully_wildcarded(const struct flow_wildcards *wc) | |
950 | { | |
951 | int i; | |
952 | ||
953 | for (i = 0; i < FLOW_N_REGS; i++) { | |
26720e24 | 954 | if (wc->masks.regs[i] != 0) { |
88ca35ee BP |
955 | return false; |
956 | } | |
957 | } | |
958 | return true; | |
959 | } | |
960 | ||
81a76618 | 961 | /* Returns a bit-mask of ofputil_protocols that can be used for sending 'match' |
27527aa0 BP |
962 | * to a switch (e.g. to add or remove a flow). Only NXM can handle tunnel IDs, |
963 | * registers, or fixing the Ethernet multicast bit. Otherwise, it's better to | |
964 | * use OpenFlow 1.0 protocol for backward compatibility. */ | |
965 | enum ofputil_protocol | |
81a76618 | 966 | ofputil_usable_protocols(const struct match *match) |
8368c090 | 967 | { |
81a76618 | 968 | const struct flow_wildcards *wc = &match->wc; |
8368c090 | 969 | |
e2170cff | 970 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 17); |
a877206f | 971 | |
7cd90356 | 972 | /* NXM, OXM, and OF1.1 support bitwise matching on ethernet addresses. */ |
26720e24 BP |
973 | if (!eth_mask_is_exact(wc->masks.dl_src) |
974 | && !eth_addr_is_zero(wc->masks.dl_src)) { | |
7cd90356 | 975 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
73c0ce34 | 976 | } |
26720e24 BP |
977 | if (!eth_mask_is_exact(wc->masks.dl_dst) |
978 | && !eth_addr_is_zero(wc->masks.dl_dst)) { | |
7cd90356 | 979 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
8368c090 BP |
980 | } |
981 | ||
7cd90356 | 982 | /* NXM, OXM, and OF1.1+ support matching metadata. */ |
26720e24 | 983 | if (wc->masks.metadata != htonll(0)) { |
7cd90356 | 984 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
969fc56c JS |
985 | } |
986 | ||
7cd90356 | 987 | /* NXM and OXM support matching ARP hardware addresses. */ |
26720e24 BP |
988 | if (!eth_addr_is_zero(wc->masks.arp_sha) || |
989 | !eth_addr_is_zero(wc->masks.arp_tha)) { | |
7cd90356 | 990 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
bad68a99 JP |
991 | } |
992 | ||
7cd90356 | 993 | /* NXM and OXM support matching IPv6 traffic. */ |
81a76618 | 994 | if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) { |
7cd90356 | 995 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
d31f1109 JP |
996 | } |
997 | ||
7cd90356 | 998 | /* NXM and OXM support matching registers. */ |
8368c090 | 999 | if (!regs_fully_wildcarded(wc)) { |
7cd90356 | 1000 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
8368c090 BP |
1001 | } |
1002 | ||
7cd90356 | 1003 | /* NXM and OXM support matching tun_id. */ |
296e07ac | 1004 | if (wc->masks.tunnel.tun_id != htonll(0)) { |
7cd90356 | 1005 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
8368c090 BP |
1006 | } |
1007 | ||
7cd90356 | 1008 | /* NXM and OXM support matching fragments. */ |
26720e24 | 1009 | if (wc->masks.nw_frag) { |
7cd90356 | 1010 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
7257b535 BP |
1011 | } |
1012 | ||
7cd90356 | 1013 | /* NXM and OXM support matching IPv6 flow label. */ |
26720e24 | 1014 | if (wc->masks.ipv6_label) { |
7cd90356 | 1015 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
fa8223b7 JP |
1016 | } |
1017 | ||
7cd90356 | 1018 | /* NXM and OXM support matching IP ECN bits. */ |
26720e24 | 1019 | if (wc->masks.nw_tos & IP_ECN_MASK) { |
7cd90356 | 1020 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
530180fd JP |
1021 | } |
1022 | ||
7cd90356 | 1023 | /* NXM and OXM support matching IP TTL/hop limit. */ |
26720e24 | 1024 | if (wc->masks.nw_ttl) { |
7cd90356 | 1025 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
a61680c6 JP |
1026 | } |
1027 | ||
7cd90356 | 1028 | /* NXM and OXM support non-CIDR IPv4 address masks. */ |
26720e24 | 1029 | if (!ip_is_cidr(wc->masks.nw_src) || !ip_is_cidr(wc->masks.nw_dst)) { |
7cd90356 | 1030 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
c08201d6 BP |
1031 | } |
1032 | ||
7cd90356 | 1033 | /* NXM and OXM support bitwise matching on transport port. */ |
26720e24 BP |
1034 | if ((wc->masks.tp_src && wc->masks.tp_src != htons(UINT16_MAX)) || |
1035 | (wc->masks.tp_dst && wc->masks.tp_dst != htons(UINT16_MAX))) { | |
7cd90356 | 1036 | return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
73f33563 BP |
1037 | } |
1038 | ||
8368c090 | 1039 | /* Other formats can express this rule. */ |
27527aa0 BP |
1040 | return OFPUTIL_P_ANY; |
1041 | } | |
1042 | ||
03e1125c SH |
1043 | void |
1044 | ofputil_format_version(struct ds *msg, enum ofp_version version) | |
1045 | { | |
8989046d | 1046 | ds_put_format(msg, "0x%02x", version); |
03e1125c SH |
1047 | } |
1048 | ||
1049 | void | |
1050 | ofputil_format_version_name(struct ds *msg, enum ofp_version version) | |
1051 | { | |
1052 | ds_put_cstr(msg, ofputil_version_to_string(version)); | |
1053 | } | |
1054 | ||
1055 | static void | |
1056 | ofputil_format_version_bitmap__(struct ds *msg, uint32_t bitmap, | |
1057 | void (*format_version)(struct ds *msg, | |
1058 | enum ofp_version)) | |
1059 | { | |
1060 | while (bitmap) { | |
1061 | format_version(msg, raw_ctz(bitmap)); | |
1062 | bitmap = zero_rightmost_1bit(bitmap); | |
1063 | if (bitmap) { | |
1064 | ds_put_cstr(msg, ", "); | |
1065 | } | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | void | |
1070 | ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap) | |
1071 | { | |
1072 | ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version); | |
1073 | } | |
1074 | ||
1075 | void | |
1076 | ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap) | |
1077 | { | |
1078 | ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version_name); | |
1079 | } | |
1080 | ||
de6c85b0 SH |
1081 | static bool |
1082 | ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh, | |
0935de41 | 1083 | uint32_t *allowed_versionsp) |
de6c85b0 SH |
1084 | { |
1085 | uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh; | |
1086 | const ovs_be32 *bitmap = (const ovs_be32 *) (oheh + 1); | |
0935de41 | 1087 | uint32_t allowed_versions; |
de6c85b0 SH |
1088 | |
1089 | if (!bitmap_len || bitmap_len % sizeof *bitmap) { | |
1090 | return false; | |
1091 | } | |
1092 | ||
1093 | /* Only use the first 32-bit element of the bitmap as that is all the | |
1094 | * current implementation supports. Subsequent elements are ignored which | |
1095 | * should have no effect on session negotiation until Open vSwtich supports | |
1096 | * wire-protocol versions greater than 31. | |
1097 | */ | |
0935de41 | 1098 | allowed_versions = ntohl(bitmap[0]); |
de6c85b0 | 1099 | |
0935de41 | 1100 | if (allowed_versions & 1) { |
de6c85b0 SH |
1101 | /* There's no OpenFlow version 0. */ |
1102 | VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow " | |
1103 | "version 0x00"); | |
0935de41 | 1104 | allowed_versions &= ~1u; |
de6c85b0 SH |
1105 | } |
1106 | ||
0935de41 | 1107 | if (!allowed_versions) { |
de6c85b0 SH |
1108 | VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow " |
1109 | "version (between 0x01 and 0x1f)"); | |
1110 | return false; | |
1111 | } | |
1112 | ||
0935de41 | 1113 | *allowed_versionsp = allowed_versions; |
de6c85b0 SH |
1114 | return true; |
1115 | } | |
1116 | ||
1117 | static uint32_t | |
1118 | version_bitmap_from_version(uint8_t ofp_version) | |
1119 | { | |
1120 | return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1; | |
1121 | } | |
1122 | ||
1123 | /* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions' | |
1124 | * the set of OpenFlow versions for which 'oh' announces support. | |
1125 | * | |
1126 | * Because of how OpenFlow defines OFPT_HELLO messages, this function is always | |
1127 | * successful, and thus '*allowed_versions' is always initialized. However, it | |
1128 | * returns false if 'oh' contains some data that could not be fully understood, | |
1129 | * true if 'oh' was completely parsed. */ | |
1130 | bool | |
1131 | ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions) | |
1132 | { | |
1133 | struct ofpbuf msg; | |
1134 | bool ok = true; | |
1135 | ||
1136 | ofpbuf_use_const(&msg, oh, ntohs(oh->length)); | |
1137 | ofpbuf_pull(&msg, sizeof *oh); | |
1138 | ||
1139 | *allowed_versions = version_bitmap_from_version(oh->version); | |
1140 | while (msg.size) { | |
1141 | const struct ofp_hello_elem_header *oheh; | |
1142 | unsigned int len; | |
1143 | ||
1144 | if (msg.size < sizeof *oheh) { | |
1145 | return false; | |
1146 | } | |
1147 | ||
1148 | oheh = msg.data; | |
1149 | len = ntohs(oheh->length); | |
1150 | if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) { | |
1151 | return false; | |
1152 | } | |
1153 | ||
1154 | if (oheh->type != htons(OFPHET_VERSIONBITMAP) | |
1155 | || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) { | |
1156 | ok = false; | |
1157 | } | |
1158 | } | |
1159 | ||
1160 | return ok; | |
1161 | } | |
1162 | ||
1163 | /* Returns true if 'allowed_versions' needs to be accompanied by a version | |
1164 | * bitmap to be correctly expressed in an OFPT_HELLO message. */ | |
1165 | static inline bool | |
1166 | should_send_version_bitmap(uint32_t allowed_versions) | |
1167 | { | |
1168 | return !is_pow2((allowed_versions >> 1) + 1); | |
1169 | } | |
1170 | ||
1171 | /* Create an OFPT_HELLO message that expresses support for the OpenFlow | |
1172 | * versions in the 'allowed_versions' bitmaps and returns the message. */ | |
1173 | struct ofpbuf * | |
1174 | ofputil_encode_hello(uint32_t allowed_versions) | |
1175 | { | |
1176 | enum ofp_version ofp_version; | |
1177 | struct ofpbuf *msg; | |
1178 | ||
1179 | ofp_version = leftmost_1bit_idx(allowed_versions); | |
1180 | msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0); | |
1181 | ||
1182 | if (should_send_version_bitmap(allowed_versions)) { | |
1183 | struct ofp_hello_elem_header *oheh; | |
1184 | uint16_t map_len; | |
1185 | ||
74c4b9c1 | 1186 | map_len = sizeof allowed_versions; |
de6c85b0 SH |
1187 | oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8)); |
1188 | oheh->type = htons(OFPHET_VERSIONBITMAP); | |
1189 | oheh->length = htons(map_len + sizeof *oheh); | |
1190 | *(ovs_be32 *)(oheh + 1) = htonl(allowed_versions); | |
1804d25a BP |
1191 | |
1192 | ofpmsg_update_length(msg); | |
de6c85b0 SH |
1193 | } |
1194 | ||
1195 | return msg; | |
1196 | } | |
1197 | ||
27527aa0 BP |
1198 | /* Returns an OpenFlow message that, sent on an OpenFlow connection whose |
1199 | * protocol is 'current', at least partly transitions the protocol to 'want'. | |
1200 | * Stores in '*next' the protocol that will be in effect on the OpenFlow | |
1201 | * connection if the switch processes the returned message correctly. (If | |
1202 | * '*next != want' then the caller will have to iterate.) | |
1203 | * | |
e43928f2 BP |
1204 | * If 'current == want', or if it is not possible to transition from 'current' |
1205 | * to 'want' (because, for example, 'current' and 'want' use different OpenFlow | |
1206 | * protocol versions), returns NULL and stores 'current' in '*next'. */ | |
27527aa0 BP |
1207 | struct ofpbuf * |
1208 | ofputil_encode_set_protocol(enum ofputil_protocol current, | |
1209 | enum ofputil_protocol want, | |
1210 | enum ofputil_protocol *next) | |
1211 | { | |
e43928f2 | 1212 | enum ofp_version cur_version, want_version; |
27527aa0 BP |
1213 | enum ofputil_protocol cur_base, want_base; |
1214 | bool cur_tid, want_tid; | |
1215 | ||
e43928f2 BP |
1216 | cur_version = ofputil_protocol_to_ofp_version(current); |
1217 | want_version = ofputil_protocol_to_ofp_version(want); | |
1218 | if (cur_version != want_version) { | |
1219 | *next = current; | |
1220 | return NULL; | |
1221 | } | |
1222 | ||
27527aa0 BP |
1223 | cur_base = ofputil_protocol_to_base(current); |
1224 | want_base = ofputil_protocol_to_base(want); | |
1225 | if (cur_base != want_base) { | |
1226 | *next = ofputil_protocol_set_base(current, want_base); | |
1227 | ||
1228 | switch (want_base) { | |
85813857 | 1229 | case OFPUTIL_P_OF10_NXM: |
27527aa0 BP |
1230 | return ofputil_encode_nx_set_flow_format(NXFF_NXM); |
1231 | ||
85813857 | 1232 | case OFPUTIL_P_OF10_STD: |
27527aa0 BP |
1233 | return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10); |
1234 | ||
85813857 | 1235 | case OFPUTIL_P_OF12_OXM: |
310f3699 BP |
1236 | /* There's only one OpenFlow 1.2 protocol and we already verified |
1237 | * above that we're not trying to change versions. */ | |
1238 | NOT_REACHED(); | |
44d3732d | 1239 | |
85813857 BP |
1240 | case OFPUTIL_P_OF10_STD_TID: |
1241 | case OFPUTIL_P_OF10_NXM_TID: | |
27527aa0 BP |
1242 | NOT_REACHED(); |
1243 | } | |
1244 | } | |
1245 | ||
1246 | cur_tid = (current & OFPUTIL_P_TID) != 0; | |
1247 | want_tid = (want & OFPUTIL_P_TID) != 0; | |
1248 | if (cur_tid != want_tid) { | |
1249 | *next = ofputil_protocol_set_tid(current, want_tid); | |
1250 | return ofputil_make_flow_mod_table_id(want_tid); | |
1251 | } | |
1252 | ||
1253 | assert(current == want); | |
1254 | ||
1255 | *next = current; | |
1256 | return NULL; | |
88ca35ee BP |
1257 | } |
1258 | ||
27527aa0 BP |
1259 | /* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow |
1260 | * format to 'nxff'. */ | |
88ca35ee | 1261 | struct ofpbuf * |
27527aa0 | 1262 | ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff) |
88ca35ee | 1263 | { |
73dbf4ab | 1264 | struct nx_set_flow_format *sff; |
88ca35ee BP |
1265 | struct ofpbuf *msg; |
1266 | ||
27527aa0 BP |
1267 | assert(ofputil_nx_flow_format_is_valid(nxff)); |
1268 | ||
982697a4 BP |
1269 | msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0); |
1270 | sff = ofpbuf_put_zeros(msg, sizeof *sff); | |
27527aa0 | 1271 | sff->format = htonl(nxff); |
88ca35ee BP |
1272 | |
1273 | return msg; | |
1274 | } | |
1275 | ||
27527aa0 BP |
1276 | /* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false |
1277 | * otherwise. */ | |
1278 | enum ofputil_protocol | |
1279 | ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format) | |
1280 | { | |
1281 | switch (flow_format) { | |
1282 | case NXFF_OPENFLOW10: | |
85813857 | 1283 | return OFPUTIL_P_OF10_STD; |
27527aa0 BP |
1284 | |
1285 | case NXFF_NXM: | |
85813857 | 1286 | return OFPUTIL_P_OF10_NXM; |
27527aa0 BP |
1287 | |
1288 | default: | |
1289 | return 0; | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | /* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */ | |
1294 | bool | |
1295 | ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format) | |
1296 | { | |
1297 | return ofputil_nx_flow_format_to_protocol(flow_format) != 0; | |
1298 | } | |
1299 | ||
1300 | /* Returns a string version of 'flow_format', which must be a valid NXFF_* | |
1301 | * value. */ | |
1302 | const char * | |
1303 | ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format) | |
1304 | { | |
1305 | switch (flow_format) { | |
1306 | case NXFF_OPENFLOW10: | |
1307 | return "openflow10"; | |
1308 | case NXFF_NXM: | |
1309 | return "nxm"; | |
1310 | default: | |
1311 | NOT_REACHED(); | |
1312 | } | |
1313 | } | |
1314 | ||
54834960 | 1315 | struct ofpbuf * |
3f4a1939 SH |
1316 | ofputil_make_set_packet_in_format(enum ofp_version ofp_version, |
1317 | enum nx_packet_in_format packet_in_format) | |
54834960 | 1318 | { |
73dbf4ab | 1319 | struct nx_set_packet_in_format *spif; |
54834960 EJ |
1320 | struct ofpbuf *msg; |
1321 | ||
3f4a1939 | 1322 | msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0); |
982697a4 | 1323 | spif = ofpbuf_put_zeros(msg, sizeof *spif); |
54834960 EJ |
1324 | spif->format = htonl(packet_in_format); |
1325 | ||
1326 | return msg; | |
1327 | } | |
1328 | ||
6c1491fb BP |
1329 | /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id |
1330 | * extension on or off (according to 'flow_mod_table_id'). */ | |
1331 | struct ofpbuf * | |
1332 | ofputil_make_flow_mod_table_id(bool flow_mod_table_id) | |
1333 | { | |
73dbf4ab | 1334 | struct nx_flow_mod_table_id *nfmti; |
6c1491fb BP |
1335 | struct ofpbuf *msg; |
1336 | ||
982697a4 BP |
1337 | msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0); |
1338 | nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti); | |
6c1491fb BP |
1339 | nfmti->set = flow_mod_table_id; |
1340 | return msg; | |
1341 | } | |
1342 | ||
7fa91113 BP |
1343 | /* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract |
1344 | * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error | |
1345 | * code. | |
1346 | * | |
f25d0cf3 BP |
1347 | * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions. |
1348 | * The caller must initialize 'ofpacts' and retains ownership of it. | |
1349 | * 'fm->ofpacts' will point into the 'ofpacts' buffer. | |
1350 | * | |
1351 | * Does not validate the flow_mod actions. The caller should do that, with | |
1352 | * ofpacts_check(). */ | |
90bf1e07 | 1353 | enum ofperr |
a9a2da38 | 1354 | ofputil_decode_flow_mod(struct ofputil_flow_mod *fm, |
27527aa0 | 1355 | const struct ofp_header *oh, |
f25d0cf3 BP |
1356 | enum ofputil_protocol protocol, |
1357 | struct ofpbuf *ofpacts) | |
2e4f5fcf | 1358 | { |
6c1491fb | 1359 | uint16_t command; |
2e4f5fcf | 1360 | struct ofpbuf b; |
982697a4 | 1361 | enum ofpraw raw; |
2e4f5fcf | 1362 | |
2013493b | 1363 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
982697a4 | 1364 | raw = ofpraw_pull_assert(&b); |
aa319503 | 1365 | if (raw == OFPRAW_OFPT11_FLOW_MOD) { |
982697a4 | 1366 | /* Standard OpenFlow 1.1 flow_mod. */ |
aa319503 | 1367 | const struct ofp11_flow_mod *ofm; |
90bf1e07 | 1368 | enum ofperr error; |
2e4f5fcf | 1369 | |
bbc32a88 | 1370 | ofm = ofpbuf_pull(&b, sizeof *ofm); |
2e4f5fcf | 1371 | |
81a76618 | 1372 | error = ofputil_pull_ofp11_match(&b, &fm->match, NULL); |
aa319503 BP |
1373 | if (error) { |
1374 | return error; | |
1c0b7503 BP |
1375 | } |
1376 | ||
aa319503 | 1377 | error = ofpacts_pull_openflow11_instructions(&b, b.size, ofpacts); |
f25d0cf3 BP |
1378 | if (error) { |
1379 | return error; | |
1380 | } | |
1381 | ||
2e4f5fcf | 1382 | /* Translate the message. */ |
81a76618 | 1383 | fm->priority = ntohs(ofm->priority); |
aa319503 BP |
1384 | if (ofm->command == OFPFC_ADD) { |
1385 | fm->cookie = htonll(0); | |
1386 | fm->cookie_mask = htonll(0); | |
1387 | fm->new_cookie = ofm->cookie; | |
1388 | } else { | |
aa319503 BP |
1389 | fm->cookie = ofm->cookie; |
1390 | fm->cookie_mask = ofm->cookie_mask; | |
1391 | fm->new_cookie = htonll(UINT64_MAX); | |
1392 | } | |
1393 | fm->command = ofm->command; | |
1394 | fm->table_id = ofm->table_id; | |
2e4f5fcf BP |
1395 | fm->idle_timeout = ntohs(ofm->idle_timeout); |
1396 | fm->hard_timeout = ntohs(ofm->hard_timeout); | |
1397 | fm->buffer_id = ntohl(ofm->buffer_id); | |
aa319503 | 1398 | error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port); |
2e4f5fcf BP |
1399 | if (error) { |
1400 | return error; | |
1401 | } | |
aa319503 | 1402 | if (ofm->out_group != htonl(OFPG_ANY)) { |
fb9515e1 | 1403 | return OFPERR_OFPFMFC_UNKNOWN; |
2e4f5fcf | 1404 | } |
aa319503 BP |
1405 | fm->flags = ntohs(ofm->flags); |
1406 | } else { | |
1407 | if (raw == OFPRAW_OFPT10_FLOW_MOD) { | |
1408 | /* Standard OpenFlow 1.0 flow_mod. */ | |
1409 | const struct ofp10_flow_mod *ofm; | |
aa319503 BP |
1410 | enum ofperr error; |
1411 | ||
1412 | /* Get the ofp10_flow_mod. */ | |
1413 | ofm = ofpbuf_pull(&b, sizeof *ofm); | |
1414 | ||
aa319503 | 1415 | /* Translate the rule. */ |
81a76618 BP |
1416 | ofputil_match_from_ofp10_match(&ofm->match, &fm->match); |
1417 | ofputil_normalize_match(&fm->match); | |
aa319503 BP |
1418 | |
1419 | /* Now get the actions. */ | |
1420 | error = ofpacts_pull_openflow10(&b, b.size, ofpacts); | |
1421 | if (error) { | |
1422 | return error; | |
1423 | } | |
1424 | ||
81a76618 BP |
1425 | /* OpenFlow 1.0 says that exact-match rules have to have the |
1426 | * highest possible priority. */ | |
1427 | fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL) | |
1428 | ? ntohs(ofm->priority) | |
1429 | : UINT16_MAX); | |
1430 | ||
aa319503 BP |
1431 | /* Translate the message. */ |
1432 | command = ntohs(ofm->command); | |
1433 | fm->cookie = htonll(0); | |
1434 | fm->cookie_mask = htonll(0); | |
1435 | fm->new_cookie = ofm->cookie; | |
1436 | fm->idle_timeout = ntohs(ofm->idle_timeout); | |
1437 | fm->hard_timeout = ntohs(ofm->hard_timeout); | |
1438 | fm->buffer_id = ntohl(ofm->buffer_id); | |
1439 | fm->out_port = ntohs(ofm->out_port); | |
1440 | fm->flags = ntohs(ofm->flags); | |
1441 | } else if (raw == OFPRAW_NXT_FLOW_MOD) { | |
1442 | /* Nicira extended flow_mod. */ | |
1443 | const struct nx_flow_mod *nfm; | |
1444 | enum ofperr error; | |
1445 | ||
1446 | /* Dissect the message. */ | |
1447 | nfm = ofpbuf_pull(&b, sizeof *nfm); | |
81a76618 BP |
1448 | error = nx_pull_match(&b, ntohs(nfm->match_len), |
1449 | &fm->match, &fm->cookie, &fm->cookie_mask); | |
aa319503 BP |
1450 | if (error) { |
1451 | return error; | |
1452 | } | |
1453 | error = ofpacts_pull_openflow10(&b, b.size, ofpacts); | |
1454 | if (error) { | |
1455 | return error; | |
1456 | } | |
1457 | ||
1458 | /* Translate the message. */ | |
1459 | command = ntohs(nfm->command); | |
1460 | if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) { | |
1461 | /* Flow additions may only set a new cookie, not match an | |
1462 | * existing cookie. */ | |
1463 | return OFPERR_NXBRC_NXM_INVALID; | |
1464 | } | |
81a76618 | 1465 | fm->priority = ntohs(nfm->priority); |
aa319503 BP |
1466 | fm->new_cookie = nfm->cookie; |
1467 | fm->idle_timeout = ntohs(nfm->idle_timeout); | |
1468 | fm->hard_timeout = ntohs(nfm->hard_timeout); | |
1469 | fm->buffer_id = ntohl(nfm->buffer_id); | |
1470 | fm->out_port = ntohs(nfm->out_port); | |
1471 | fm->flags = ntohs(nfm->flags); | |
1472 | } else { | |
1473 | NOT_REACHED(); | |
1474 | } | |
1475 | ||
1476 | if (protocol & OFPUTIL_P_TID) { | |
1477 | fm->command = command & 0xff; | |
1478 | fm->table_id = command >> 8; | |
1479 | } else { | |
1480 | fm->command = command; | |
1481 | fm->table_id = 0xff; | |
e729e793 | 1482 | } |
2e4f5fcf BP |
1483 | } |
1484 | ||
f25d0cf3 BP |
1485 | fm->ofpacts = ofpacts->data; |
1486 | fm->ofpacts_len = ofpacts->size; | |
6c1491fb | 1487 | |
2e4f5fcf BP |
1488 | return 0; |
1489 | } | |
1490 | ||
aa6305ea SH |
1491 | static ovs_be16 |
1492 | ofputil_tid_command(const struct ofputil_flow_mod *fm, | |
1493 | enum ofputil_protocol protocol) | |
1494 | { | |
1495 | return htons(protocol & OFPUTIL_P_TID | |
1496 | ? (fm->command & 0xff) | (fm->table_id << 8) | |
1497 | : fm->command); | |
1498 | } | |
1499 | ||
2e4f5fcf | 1500 | /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to |
6cbe2c0f | 1501 | * 'protocol' and returns the message. */ |
2e4f5fcf | 1502 | struct ofpbuf * |
a9a2da38 | 1503 | ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm, |
27527aa0 | 1504 | enum ofputil_protocol protocol) |
2e4f5fcf | 1505 | { |
2e4f5fcf BP |
1506 | struct ofpbuf *msg; |
1507 | ||
27527aa0 | 1508 | switch (protocol) { |
85813857 | 1509 | case OFPUTIL_P_OF12_OXM: { |
aa6305ea SH |
1510 | struct ofp11_flow_mod *ofm; |
1511 | ||
1512 | msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, OFP12_VERSION, | |
1513 | NXM_TYPICAL_LEN + fm->ofpacts_len); | |
1514 | ofm = ofpbuf_put_zeros(msg, sizeof *ofm); | |
a5ff8823 SH |
1515 | if (fm->command == OFPFC_ADD) { |
1516 | ofm->cookie = fm->new_cookie; | |
1517 | } else { | |
1518 | ofm->cookie = fm->cookie; | |
1519 | } | |
aa6305ea SH |
1520 | ofm->cookie_mask = fm->cookie_mask; |
1521 | ofm->table_id = fm->table_id; | |
1522 | ofm->command = fm->command; | |
1523 | ofm->idle_timeout = htons(fm->idle_timeout); | |
1524 | ofm->hard_timeout = htons(fm->hard_timeout); | |
81a76618 | 1525 | ofm->priority = htons(fm->priority); |
aa6305ea SH |
1526 | ofm->buffer_id = htonl(fm->buffer_id); |
1527 | ofm->out_port = ofputil_port_to_ofp11(fm->out_port); | |
1528 | ofm->out_group = htonl(OFPG11_ANY); | |
1529 | ofm->flags = htons(fm->flags); | |
81a76618 | 1530 | oxm_put_match(msg, &fm->match); |
5b289eaf | 1531 | ofpacts_put_openflow11_instructions(fm->ofpacts, fm->ofpacts_len, msg); |
aa6305ea SH |
1532 | break; |
1533 | } | |
1534 | ||
85813857 BP |
1535 | case OFPUTIL_P_OF10_STD: |
1536 | case OFPUTIL_P_OF10_STD_TID: { | |
3f192f23 SH |
1537 | struct ofp10_flow_mod *ofm; |
1538 | ||
982697a4 BP |
1539 | msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION, |
1540 | fm->ofpacts_len); | |
1541 | ofm = ofpbuf_put_zeros(msg, sizeof *ofm); | |
81a76618 | 1542 | ofputil_match_to_ofp10_match(&fm->match, &ofm->match); |
623e1caf | 1543 | ofm->cookie = fm->new_cookie; |
aa6305ea | 1544 | ofm->command = ofputil_tid_command(fm, protocol); |
2e4f5fcf BP |
1545 | ofm->idle_timeout = htons(fm->idle_timeout); |
1546 | ofm->hard_timeout = htons(fm->hard_timeout); | |
81a76618 | 1547 | ofm->priority = htons(fm->priority); |
2e4f5fcf BP |
1548 | ofm->buffer_id = htonl(fm->buffer_id); |
1549 | ofm->out_port = htons(fm->out_port); | |
1550 | ofm->flags = htons(fm->flags); | |
5b289eaf | 1551 | ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg); |
27527aa0 | 1552 | break; |
3f192f23 | 1553 | } |
2e4f5fcf | 1554 | |
85813857 BP |
1555 | case OFPUTIL_P_OF10_NXM: |
1556 | case OFPUTIL_P_OF10_NXM_TID: { | |
3f192f23 SH |
1557 | struct nx_flow_mod *nfm; |
1558 | int match_len; | |
1559 | ||
982697a4 BP |
1560 | msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION, |
1561 | NXM_TYPICAL_LEN + fm->ofpacts_len); | |
1562 | nfm = ofpbuf_put_zeros(msg, sizeof *nfm); | |
aa6305ea | 1563 | nfm->command = ofputil_tid_command(fm, protocol); |
623e1caf | 1564 | nfm->cookie = fm->new_cookie; |
81a76618 | 1565 | match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask); |
982697a4 | 1566 | nfm = msg->l3; |
2e4f5fcf BP |
1567 | nfm->idle_timeout = htons(fm->idle_timeout); |
1568 | nfm->hard_timeout = htons(fm->hard_timeout); | |
81a76618 | 1569 | nfm->priority = htons(fm->priority); |
2e4f5fcf BP |
1570 | nfm->buffer_id = htonl(fm->buffer_id); |
1571 | nfm->out_port = htons(fm->out_port); | |
1572 | nfm->flags = htons(fm->flags); | |
1573 | nfm->match_len = htons(match_len); | |
5b289eaf | 1574 | ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg); |
27527aa0 | 1575 | break; |
3f192f23 | 1576 | } |
27527aa0 BP |
1577 | |
1578 | default: | |
2e4f5fcf BP |
1579 | NOT_REACHED(); |
1580 | } | |
1581 | ||
982697a4 | 1582 | ofpmsg_update_length(msg); |
2e4f5fcf BP |
1583 | return msg; |
1584 | } | |
1585 | ||
27527aa0 BP |
1586 | /* Returns a bitmask with a 1-bit for each protocol that could be used to |
1587 | * send all of the 'n_fm's flow table modification requests in 'fms', and a | |
1588 | * 0-bit for each protocol that is inadequate. | |
1589 | * | |
1590 | * (The return value will have at least one 1-bit.) */ | |
1591 | enum ofputil_protocol | |
1592 | ofputil_flow_mod_usable_protocols(const struct ofputil_flow_mod *fms, | |
1593 | size_t n_fms) | |
1594 | { | |
1595 | enum ofputil_protocol usable_protocols; | |
1596 | size_t i; | |
1597 | ||
1598 | usable_protocols = OFPUTIL_P_ANY; | |
1599 | for (i = 0; i < n_fms; i++) { | |
1600 | const struct ofputil_flow_mod *fm = &fms[i]; | |
1601 | ||
81a76618 | 1602 | usable_protocols &= ofputil_usable_protocols(&fm->match); |
27527aa0 BP |
1603 | if (fm->table_id != 0xff) { |
1604 | usable_protocols &= OFPUTIL_P_TID; | |
1605 | } | |
623e1caf | 1606 | |
7cd90356 | 1607 | /* Matching of the cookie is only supported through NXM or OF1.1+. */ |
623e1caf | 1608 | if (fm->cookie_mask != htonll(0)) { |
7cd90356 | 1609 | usable_protocols &= OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
27527aa0 BP |
1610 | } |
1611 | } | |
1612 | assert(usable_protocols); | |
1613 | ||
1614 | return usable_protocols; | |
1615 | } | |
1616 | ||
90bf1e07 | 1617 | static enum ofperr |
0157ad3a SH |
1618 | ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr, |
1619 | const struct ofp10_flow_stats_request *ofsr, | |
1620 | bool aggregate) | |
2e4f5fcf | 1621 | { |
2e4f5fcf | 1622 | fsr->aggregate = aggregate; |
81a76618 | 1623 | ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match); |
2e4f5fcf BP |
1624 | fsr->out_port = ntohs(ofsr->out_port); |
1625 | fsr->table_id = ofsr->table_id; | |
e729e793 | 1626 | fsr->cookie = fsr->cookie_mask = htonll(0); |
2e4f5fcf BP |
1627 | |
1628 | return 0; | |
1629 | } | |
1630 | ||
0157ad3a SH |
1631 | static enum ofperr |
1632 | ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr, | |
1633 | struct ofpbuf *b, bool aggregate) | |
1634 | { | |
1635 | const struct ofp11_flow_stats_request *ofsr; | |
1636 | enum ofperr error; | |
1637 | ||
1638 | ofsr = ofpbuf_pull(b, sizeof *ofsr); | |
1639 | fsr->aggregate = aggregate; | |
1640 | fsr->table_id = ofsr->table_id; | |
1641 | error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port); | |
1642 | if (error) { | |
1643 | return error; | |
1644 | } | |
1645 | if (ofsr->out_group != htonl(OFPG11_ANY)) { | |
fb9515e1 | 1646 | return OFPERR_OFPFMFC_UNKNOWN; |
0157ad3a SH |
1647 | } |
1648 | fsr->cookie = ofsr->cookie; | |
1649 | fsr->cookie_mask = ofsr->cookie_mask; | |
81a76618 | 1650 | error = ofputil_pull_ofp11_match(b, &fsr->match, NULL); |
0157ad3a SH |
1651 | if (error) { |
1652 | return error; | |
1653 | } | |
1654 | ||
1655 | return 0; | |
1656 | } | |
1657 | ||
90bf1e07 | 1658 | static enum ofperr |
81d1ea94 | 1659 | ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr, |
982697a4 | 1660 | struct ofpbuf *b, bool aggregate) |
2e4f5fcf BP |
1661 | { |
1662 | const struct nx_flow_stats_request *nfsr; | |
90bf1e07 | 1663 | enum ofperr error; |
2e4f5fcf | 1664 | |
982697a4 | 1665 | nfsr = ofpbuf_pull(b, sizeof *nfsr); |
81a76618 | 1666 | error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match, |
e729e793 | 1667 | &fsr->cookie, &fsr->cookie_mask); |
2e4f5fcf BP |
1668 | if (error) { |
1669 | return error; | |
1670 | } | |
982697a4 | 1671 | if (b->size) { |
90bf1e07 | 1672 | return OFPERR_OFPBRC_BAD_LEN; |
2e4f5fcf BP |
1673 | } |
1674 | ||
1675 | fsr->aggregate = aggregate; | |
1676 | fsr->out_port = ntohs(nfsr->out_port); | |
1677 | fsr->table_id = nfsr->table_id; | |
1678 | ||
1679 | return 0; | |
1680 | } | |
1681 | ||
1682 | /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE | |
b78f6b77 BP |
1683 | * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if |
1684 | * successful, otherwise an OpenFlow error code. */ | |
90bf1e07 | 1685 | enum ofperr |
81d1ea94 | 1686 | ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr, |
b78f6b77 | 1687 | const struct ofp_header *oh) |
2e4f5fcf | 1688 | { |
982697a4 | 1689 | enum ofpraw raw; |
2e4f5fcf | 1690 | struct ofpbuf b; |
2e4f5fcf | 1691 | |
2013493b | 1692 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
982697a4 BP |
1693 | raw = ofpraw_pull_assert(&b); |
1694 | switch ((int) raw) { | |
cfc23141 | 1695 | case OFPRAW_OFPST10_FLOW_REQUEST: |
0157ad3a | 1696 | return ofputil_decode_ofpst10_flow_request(fsr, b.data, false); |
2e4f5fcf | 1697 | |
617da9cd | 1698 | case OFPRAW_OFPST10_AGGREGATE_REQUEST: |
0157ad3a SH |
1699 | return ofputil_decode_ofpst10_flow_request(fsr, b.data, true); |
1700 | ||
1701 | case OFPRAW_OFPST11_FLOW_REQUEST: | |
1702 | return ofputil_decode_ofpst11_flow_request(fsr, &b, false); | |
2e4f5fcf | 1703 | |
617da9cd SH |
1704 | case OFPRAW_OFPST11_AGGREGATE_REQUEST: |
1705 | return ofputil_decode_ofpst11_flow_request(fsr, &b, true); | |
1706 | ||
982697a4 BP |
1707 | case OFPRAW_NXST_FLOW_REQUEST: |
1708 | return ofputil_decode_nxst_flow_request(fsr, &b, false); | |
2e4f5fcf | 1709 | |
982697a4 BP |
1710 | case OFPRAW_NXST_AGGREGATE_REQUEST: |
1711 | return ofputil_decode_nxst_flow_request(fsr, &b, true); | |
2e4f5fcf BP |
1712 | |
1713 | default: | |
1714 | /* Hey, the caller lied. */ | |
1715 | NOT_REACHED(); | |
1716 | } | |
1717 | } | |
1718 | ||
1719 | /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW, | |
4ffd1b43 | 1720 | * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to |
27527aa0 | 1721 | * 'protocol', and returns the message. */ |
2e4f5fcf | 1722 | struct ofpbuf * |
81d1ea94 | 1723 | ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr, |
27527aa0 | 1724 | enum ofputil_protocol protocol) |
2e4f5fcf BP |
1725 | { |
1726 | struct ofpbuf *msg; | |
982697a4 | 1727 | enum ofpraw raw; |
2e4f5fcf | 1728 | |
27527aa0 | 1729 | switch (protocol) { |
85813857 | 1730 | case OFPUTIL_P_OF12_OXM: { |
06516c65 SH |
1731 | struct ofp11_flow_stats_request *ofsr; |
1732 | ||
1733 | raw = (fsr->aggregate | |
617da9cd | 1734 | ? OFPRAW_OFPST11_AGGREGATE_REQUEST |
cfc23141 | 1735 | : OFPRAW_OFPST11_FLOW_REQUEST); |
06516c65 SH |
1736 | msg = ofpraw_alloc(raw, OFP12_VERSION, NXM_TYPICAL_LEN); |
1737 | ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr); | |
1738 | ofsr->table_id = fsr->table_id; | |
1739 | ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port); | |
1740 | ofsr->out_group = htonl(OFPG11_ANY); | |
1741 | ofsr->cookie = fsr->cookie; | |
1742 | ofsr->cookie_mask = fsr->cookie_mask; | |
1743 | oxm_put_match(msg, &fsr->match); | |
1744 | break; | |
1745 | } | |
1746 | ||
85813857 BP |
1747 | case OFPUTIL_P_OF10_STD: |
1748 | case OFPUTIL_P_OF10_STD_TID: { | |
e2b9ac44 | 1749 | struct ofp10_flow_stats_request *ofsr; |
2e4f5fcf | 1750 | |
982697a4 | 1751 | raw = (fsr->aggregate |
617da9cd | 1752 | ? OFPRAW_OFPST10_AGGREGATE_REQUEST |
cfc23141 | 1753 | : OFPRAW_OFPST10_FLOW_REQUEST); |
982697a4 BP |
1754 | msg = ofpraw_alloc(raw, OFP10_VERSION, 0); |
1755 | ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr); | |
81a76618 | 1756 | ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match); |
2e4f5fcf BP |
1757 | ofsr->table_id = fsr->table_id; |
1758 | ofsr->out_port = htons(fsr->out_port); | |
27527aa0 BP |
1759 | break; |
1760 | } | |
1761 | ||
85813857 BP |
1762 | case OFPUTIL_P_OF10_NXM: |
1763 | case OFPUTIL_P_OF10_NXM_TID: { | |
2e4f5fcf BP |
1764 | struct nx_flow_stats_request *nfsr; |
1765 | int match_len; | |
1766 | ||
982697a4 BP |
1767 | raw = (fsr->aggregate |
1768 | ? OFPRAW_NXST_AGGREGATE_REQUEST | |
1769 | : OFPRAW_NXST_FLOW_REQUEST); | |
06516c65 | 1770 | msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN); |
982697a4 | 1771 | ofpbuf_put_zeros(msg, sizeof *nfsr); |
7623f4dd | 1772 | match_len = nx_put_match(msg, &fsr->match, |
e729e793 | 1773 | fsr->cookie, fsr->cookie_mask); |
2e4f5fcf | 1774 | |
982697a4 | 1775 | nfsr = msg->l3; |
2e4f5fcf BP |
1776 | nfsr->out_port = htons(fsr->out_port); |
1777 | nfsr->match_len = htons(match_len); | |
1778 | nfsr->table_id = fsr->table_id; | |
27527aa0 BP |
1779 | break; |
1780 | } | |
1781 | ||
1782 | default: | |
2e4f5fcf BP |
1783 | NOT_REACHED(); |
1784 | } | |
1785 | ||
1786 | return msg; | |
1787 | } | |
d1e2cf21 | 1788 | |
27527aa0 BP |
1789 | /* Returns a bitmask with a 1-bit for each protocol that could be used to |
1790 | * accurately encode 'fsr', and a 0-bit for each protocol that is inadequate. | |
1791 | * | |
1792 | * (The return value will have at least one 1-bit.) */ | |
1793 | enum ofputil_protocol | |
1794 | ofputil_flow_stats_request_usable_protocols( | |
1795 | const struct ofputil_flow_stats_request *fsr) | |
1796 | { | |
1797 | enum ofputil_protocol usable_protocols; | |
1798 | ||
1799 | usable_protocols = ofputil_usable_protocols(&fsr->match); | |
1800 | if (fsr->cookie_mask != htonll(0)) { | |
7cd90356 | 1801 | usable_protocols &= OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM; |
27527aa0 BP |
1802 | } |
1803 | return usable_protocols; | |
1804 | } | |
1805 | ||
4ffd1b43 | 1806 | /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract |
b78f6b77 | 1807 | * ofputil_flow_stats in 'fs'. |
4ffd1b43 BP |
1808 | * |
1809 | * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single | |
1810 | * OpenFlow message. Calling this function multiple times for a single 'msg' | |
1811 | * iterates through the replies. The caller must initially leave 'msg''s layer | |
1812 | * pointers null and not modify them between calls. | |
1813 | * | |
f27f2134 BP |
1814 | * Most switches don't send the values needed to populate fs->idle_age and |
1815 | * fs->hard_age, so those members will usually be set to 0. If the switch from | |
1816 | * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass | |
1817 | * 'flow_age_extension' as true so that the contents of 'msg' determine the | |
1818 | * 'idle_age' and 'hard_age' members in 'fs'. | |
1819 | * | |
f25d0cf3 BP |
1820 | * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats |
1821 | * reply's actions. The caller must initialize 'ofpacts' and retains ownership | |
1822 | * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer. | |
1823 | * | |
4ffd1b43 BP |
1824 | * Returns 0 if successful, EOF if no replies were left in this 'msg', |
1825 | * otherwise a positive errno value. */ | |
1826 | int | |
1827 | ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs, | |
f27f2134 | 1828 | struct ofpbuf *msg, |
f25d0cf3 BP |
1829 | bool flow_age_extension, |
1830 | struct ofpbuf *ofpacts) | |
4ffd1b43 | 1831 | { |
982697a4 BP |
1832 | enum ofperr error; |
1833 | enum ofpraw raw; | |
4ffd1b43 | 1834 | |
982697a4 BP |
1835 | error = (msg->l2 |
1836 | ? ofpraw_decode(&raw, msg->l2) | |
1837 | : ofpraw_pull(&raw, msg)); | |
1838 | if (error) { | |
1839 | return error; | |
4ffd1b43 BP |
1840 | } |
1841 | ||
1842 | if (!msg->size) { | |
1843 | return EOF; | |
6ec5f0c5 SH |
1844 | } else if (raw == OFPRAW_OFPST11_FLOW_REPLY) { |
1845 | const struct ofp11_flow_stats *ofs; | |
1846 | size_t length; | |
1847 | uint16_t padded_match_len; | |
1848 | ||
1849 | ofs = ofpbuf_try_pull(msg, sizeof *ofs); | |
1850 | if (!ofs) { | |
1851 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %zu leftover " | |
1852 | "bytes at end", msg->size); | |
1853 | return EINVAL; | |
1854 | } | |
1855 | ||
1856 | length = ntohs(ofs->length); | |
1857 | if (length < sizeof *ofs) { | |
1858 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid " | |
1859 | "length %zu", length); | |
1860 | return EINVAL; | |
1861 | } | |
1862 | ||
81a76618 | 1863 | if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) { |
6ec5f0c5 SH |
1864 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match"); |
1865 | return EINVAL; | |
1866 | } | |
1867 | ||
1868 | if (ofpacts_pull_openflow11_instructions(msg, length - sizeof *ofs - | |
1869 | padded_match_len, ofpacts)) { | |
1870 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions"); | |
1871 | return EINVAL; | |
1872 | } | |
1873 | ||
81a76618 | 1874 | fs->priority = ntohs(ofs->priority); |
6ec5f0c5 SH |
1875 | fs->table_id = ofs->table_id; |
1876 | fs->duration_sec = ntohl(ofs->duration_sec); | |
1877 | fs->duration_nsec = ntohl(ofs->duration_nsec); | |
1878 | fs->idle_timeout = ntohs(ofs->idle_timeout); | |
1879 | fs->hard_timeout = ntohs(ofs->hard_timeout); | |
1880 | fs->idle_age = -1; | |
1881 | fs->hard_age = -1; | |
1882 | fs->cookie = ofs->cookie; | |
1883 | fs->packet_count = ntohll(ofs->packet_count); | |
1884 | fs->byte_count = ntohll(ofs->byte_count); | |
cfc23141 | 1885 | } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) { |
e2b9ac44 | 1886 | const struct ofp10_flow_stats *ofs; |
4ffd1b43 BP |
1887 | size_t length; |
1888 | ||
1889 | ofs = ofpbuf_try_pull(msg, sizeof *ofs); | |
1890 | if (!ofs) { | |
1891 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %zu leftover " | |
1892 | "bytes at end", msg->size); | |
1893 | return EINVAL; | |
1894 | } | |
1895 | ||
1896 | length = ntohs(ofs->length); | |
1897 | if (length < sizeof *ofs) { | |
1898 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid " | |
1899 | "length %zu", length); | |
1900 | return EINVAL; | |
1901 | } | |
1902 | ||
d01c980f | 1903 | if (ofpacts_pull_openflow10(msg, length - sizeof *ofs, ofpacts)) { |
4ffd1b43 BP |
1904 | return EINVAL; |
1905 | } | |
1906 | ||
1907 | fs->cookie = get_32aligned_be64(&ofs->cookie); | |
81a76618 BP |
1908 | ofputil_match_from_ofp10_match(&ofs->match, &fs->match); |
1909 | fs->priority = ntohs(ofs->priority); | |
4ffd1b43 BP |
1910 | fs->table_id = ofs->table_id; |
1911 | fs->duration_sec = ntohl(ofs->duration_sec); | |
1912 | fs->duration_nsec = ntohl(ofs->duration_nsec); | |
1913 | fs->idle_timeout = ntohs(ofs->idle_timeout); | |
1914 | fs->hard_timeout = ntohs(ofs->hard_timeout); | |
f27f2134 BP |
1915 | fs->idle_age = -1; |
1916 | fs->hard_age = -1; | |
4ffd1b43 BP |
1917 | fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count)); |
1918 | fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count)); | |
982697a4 | 1919 | } else if (raw == OFPRAW_NXST_FLOW_REPLY) { |
4ffd1b43 | 1920 | const struct nx_flow_stats *nfs; |
f25d0cf3 | 1921 | size_t match_len, actions_len, length; |
4ffd1b43 BP |
1922 | |
1923 | nfs = ofpbuf_try_pull(msg, sizeof *nfs); | |
1924 | if (!nfs) { | |
1925 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %zu leftover " | |
1926 | "bytes at end", msg->size); | |
1927 | return EINVAL; | |
1928 | } | |
1929 | ||
1930 | length = ntohs(nfs->length); | |
1931 | match_len = ntohs(nfs->match_len); | |
1932 | if (length < sizeof *nfs + ROUND_UP(match_len, 8)) { | |
1933 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%zu " | |
1934 | "claims invalid length %zu", match_len, length); | |
1935 | return EINVAL; | |
1936 | } | |
81a76618 | 1937 | if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) { |
4ffd1b43 BP |
1938 | return EINVAL; |
1939 | } | |
1940 | ||
f25d0cf3 | 1941 | actions_len = length - sizeof *nfs - ROUND_UP(match_len, 8); |
d01c980f | 1942 | if (ofpacts_pull_openflow10(msg, actions_len, ofpacts)) { |
4ffd1b43 BP |
1943 | return EINVAL; |
1944 | } | |
1945 | ||
1946 | fs->cookie = nfs->cookie; | |
1947 | fs->table_id = nfs->table_id; | |
1948 | fs->duration_sec = ntohl(nfs->duration_sec); | |
1949 | fs->duration_nsec = ntohl(nfs->duration_nsec); | |
81a76618 | 1950 | fs->priority = ntohs(nfs->priority); |
4ffd1b43 BP |
1951 | fs->idle_timeout = ntohs(nfs->idle_timeout); |
1952 | fs->hard_timeout = ntohs(nfs->hard_timeout); | |
f27f2134 BP |
1953 | fs->idle_age = -1; |
1954 | fs->hard_age = -1; | |
1955 | if (flow_age_extension) { | |
1956 | if (nfs->idle_age) { | |
1957 | fs->idle_age = ntohs(nfs->idle_age) - 1; | |
1958 | } | |
1959 | if (nfs->hard_age) { | |
1960 | fs->hard_age = ntohs(nfs->hard_age) - 1; | |
1961 | } | |
1962 | } | |
4ffd1b43 BP |
1963 | fs->packet_count = ntohll(nfs->packet_count); |
1964 | fs->byte_count = ntohll(nfs->byte_count); | |
1965 | } else { | |
1966 | NOT_REACHED(); | |
1967 | } | |
1968 | ||
f25d0cf3 BP |
1969 | fs->ofpacts = ofpacts->data; |
1970 | fs->ofpacts_len = ofpacts->size; | |
1971 | ||
4ffd1b43 BP |
1972 | return 0; |
1973 | } | |
1974 | ||
5e9d0469 BP |
1975 | /* Returns 'count' unchanged except that UINT64_MAX becomes 0. |
1976 | * | |
1977 | * We use this in situations where OVS internally uses UINT64_MAX to mean | |
1978 | * "value unknown" but OpenFlow 1.0 does not define any unknown value. */ | |
1979 | static uint64_t | |
1980 | unknown_to_zero(uint64_t count) | |
1981 | { | |
1982 | return count != UINT64_MAX ? count : 0; | |
1983 | } | |
1984 | ||
349adfb2 BP |
1985 | /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to |
1986 | * those already present in the list of ofpbufs in 'replies'. 'replies' should | |
1987 | * have been initialized with ofputil_start_stats_reply(). */ | |
1988 | void | |
1989 | ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs, | |
1990 | struct list *replies) | |
1991 | { | |
f25d0cf3 | 1992 | struct ofpbuf *reply = ofpbuf_from_list(list_back(replies)); |
f25d0cf3 | 1993 | size_t start_ofs = reply->size; |
982697a4 | 1994 | enum ofpraw raw; |
349adfb2 | 1995 | |
982697a4 | 1996 | ofpraw_decode_partial(&raw, reply->data, reply->size); |
22a86f18 SH |
1997 | if (raw == OFPRAW_OFPST11_FLOW_REPLY) { |
1998 | struct ofp11_flow_stats *ofs; | |
1999 | ||
2000 | ofpbuf_put_uninit(reply, sizeof *ofs); | |
81a76618 | 2001 | oxm_put_match(reply, &fs->match); |
22a86f18 SH |
2002 | ofpacts_put_openflow11_instructions(fs->ofpacts, fs->ofpacts_len, |
2003 | reply); | |
2004 | ||
2005 | ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs); | |
2006 | ofs->length = htons(reply->size - start_ofs); | |
2007 | ofs->table_id = fs->table_id; | |
2008 | ofs->pad = 0; | |
2009 | ofs->duration_sec = htonl(fs->duration_sec); | |
2010 | ofs->duration_nsec = htonl(fs->duration_nsec); | |
81a76618 | 2011 | ofs->priority = htons(fs->priority); |
22a86f18 SH |
2012 | ofs->idle_timeout = htons(fs->idle_timeout); |
2013 | ofs->hard_timeout = htons(fs->hard_timeout); | |
2014 | memset(ofs->pad2, 0, sizeof ofs->pad2); | |
2015 | ofs->cookie = fs->cookie; | |
2016 | ofs->packet_count = htonll(unknown_to_zero(fs->packet_count)); | |
2017 | ofs->byte_count = htonll(unknown_to_zero(fs->byte_count)); | |
2018 | } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) { | |
e2b9ac44 | 2019 | struct ofp10_flow_stats *ofs; |
349adfb2 | 2020 | |
1a59dc2c BP |
2021 | ofpbuf_put_uninit(reply, sizeof *ofs); |
2022 | ofpacts_put_openflow10(fs->ofpacts, fs->ofpacts_len, reply); | |
2023 | ||
2024 | ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs); | |
2025 | ofs->length = htons(reply->size - start_ofs); | |
349adfb2 BP |
2026 | ofs->table_id = fs->table_id; |
2027 | ofs->pad = 0; | |
81a76618 | 2028 | ofputil_match_to_ofp10_match(&fs->match, &ofs->match); |
349adfb2 BP |
2029 | ofs->duration_sec = htonl(fs->duration_sec); |
2030 | ofs->duration_nsec = htonl(fs->duration_nsec); | |
81a76618 | 2031 | ofs->priority = htons(fs->priority); |
349adfb2 BP |
2032 | ofs->idle_timeout = htons(fs->idle_timeout); |
2033 | ofs->hard_timeout = htons(fs->hard_timeout); | |
2034 | memset(ofs->pad2, 0, sizeof ofs->pad2); | |
2035 | put_32aligned_be64(&ofs->cookie, fs->cookie); | |
5e9d0469 BP |
2036 | put_32aligned_be64(&ofs->packet_count, |
2037 | htonll(unknown_to_zero(fs->packet_count))); | |
2038 | put_32aligned_be64(&ofs->byte_count, | |
2039 | htonll(unknown_to_zero(fs->byte_count))); | |
982697a4 | 2040 | } else if (raw == OFPRAW_NXST_FLOW_REPLY) { |
349adfb2 | 2041 | struct nx_flow_stats *nfs; |
1a59dc2c | 2042 | int match_len; |
349adfb2 | 2043 | |
1a59dc2c | 2044 | ofpbuf_put_uninit(reply, sizeof *nfs); |
81a76618 | 2045 | match_len = nx_put_match(reply, &fs->match, 0, 0); |
1a59dc2c BP |
2046 | ofpacts_put_openflow10(fs->ofpacts, fs->ofpacts_len, reply); |
2047 | ||
2048 | nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs); | |
2049 | nfs->length = htons(reply->size - start_ofs); | |
349adfb2 BP |
2050 | nfs->table_id = fs->table_id; |
2051 | nfs->pad = 0; | |
2052 | nfs->duration_sec = htonl(fs->duration_sec); | |
2053 | nfs->duration_nsec = htonl(fs->duration_nsec); | |
81a76618 | 2054 | nfs->priority = htons(fs->priority); |
349adfb2 BP |
2055 | nfs->idle_timeout = htons(fs->idle_timeout); |
2056 | nfs->hard_timeout = htons(fs->hard_timeout); | |
f27f2134 BP |
2057 | nfs->idle_age = htons(fs->idle_age < 0 ? 0 |
2058 | : fs->idle_age < UINT16_MAX ? fs->idle_age + 1 | |
2059 | : UINT16_MAX); | |
2060 | nfs->hard_age = htons(fs->hard_age < 0 ? 0 | |
2061 | : fs->hard_age < UINT16_MAX ? fs->hard_age + 1 | |
2062 | : UINT16_MAX); | |
1a59dc2c | 2063 | nfs->match_len = htons(match_len); |
349adfb2 BP |
2064 | nfs->cookie = fs->cookie; |
2065 | nfs->packet_count = htonll(fs->packet_count); | |
2066 | nfs->byte_count = htonll(fs->byte_count); | |
349adfb2 BP |
2067 | } else { |
2068 | NOT_REACHED(); | |
2069 | } | |
f25d0cf3 | 2070 | |
982697a4 | 2071 | ofpmp_postappend(replies, start_ofs); |
349adfb2 BP |
2072 | } |
2073 | ||
76c93b22 | 2074 | /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or |
a814ba0f | 2075 | * NXST_AGGREGATE reply matching 'request', and returns the message. */ |
76c93b22 BP |
2076 | struct ofpbuf * |
2077 | ofputil_encode_aggregate_stats_reply( | |
2078 | const struct ofputil_aggregate_stats *stats, | |
982697a4 | 2079 | const struct ofp_header *request) |
76c93b22 | 2080 | { |
a814ba0f BP |
2081 | struct ofp_aggregate_stats_reply *asr; |
2082 | uint64_t packet_count; | |
2083 | uint64_t byte_count; | |
76c93b22 | 2084 | struct ofpbuf *msg; |
982697a4 | 2085 | enum ofpraw raw; |
76c93b22 | 2086 | |
982697a4 | 2087 | ofpraw_decode(&raw, request); |
617da9cd | 2088 | if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) { |
a814ba0f BP |
2089 | packet_count = unknown_to_zero(stats->packet_count); |
2090 | byte_count = unknown_to_zero(stats->byte_count); | |
76c93b22 | 2091 | } else { |
a814ba0f BP |
2092 | packet_count = stats->packet_count; |
2093 | byte_count = stats->byte_count; | |
76c93b22 BP |
2094 | } |
2095 | ||
a814ba0f BP |
2096 | msg = ofpraw_alloc_stats_reply(request, 0); |
2097 | asr = ofpbuf_put_zeros(msg, sizeof *asr); | |
2098 | put_32aligned_be64(&asr->packet_count, htonll(packet_count)); | |
2099 | put_32aligned_be64(&asr->byte_count, htonll(byte_count)); | |
2100 | asr->flow_count = htonl(stats->flow_count); | |
2101 | ||
76c93b22 BP |
2102 | return msg; |
2103 | } | |
2104 | ||
982697a4 BP |
2105 | enum ofperr |
2106 | ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats, | |
2107 | const struct ofp_header *reply) | |
2108 | { | |
a814ba0f | 2109 | struct ofp_aggregate_stats_reply *asr; |
982697a4 | 2110 | struct ofpbuf msg; |
982697a4 BP |
2111 | |
2112 | ofpbuf_use_const(&msg, reply, ntohs(reply->length)); | |
a814ba0f BP |
2113 | ofpraw_pull_assert(&msg); |
2114 | ||
2115 | asr = msg.l3; | |
2116 | stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count)); | |
2117 | stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count)); | |
2118 | stats->flow_count = ntohl(asr->flow_count); | |
982697a4 BP |
2119 | |
2120 | return 0; | |
2121 | } | |
2122 | ||
b78f6b77 BP |
2123 | /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an |
2124 | * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise | |
2125 | * an OpenFlow error code. */ | |
90bf1e07 | 2126 | enum ofperr |
9b045a0c | 2127 | ofputil_decode_flow_removed(struct ofputil_flow_removed *fr, |
b78f6b77 | 2128 | const struct ofp_header *oh) |
9b045a0c | 2129 | { |
982697a4 BP |
2130 | enum ofpraw raw; |
2131 | struct ofpbuf b; | |
9b045a0c | 2132 | |
982697a4 BP |
2133 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2134 | raw = ofpraw_pull_assert(&b); | |
eefbf181 SH |
2135 | if (raw == OFPRAW_OFPT11_FLOW_REMOVED) { |
2136 | const struct ofp12_flow_removed *ofr; | |
2137 | enum ofperr error; | |
2138 | ||
2139 | ofr = ofpbuf_pull(&b, sizeof *ofr); | |
2140 | ||
81a76618 | 2141 | error = ofputil_pull_ofp11_match(&b, &fr->match, NULL); |
eefbf181 SH |
2142 | if (error) { |
2143 | return error; | |
2144 | } | |
2145 | ||
81a76618 | 2146 | fr->priority = ntohs(ofr->priority); |
eefbf181 SH |
2147 | fr->cookie = ofr->cookie; |
2148 | fr->reason = ofr->reason; | |
95216219 | 2149 | fr->table_id = ofr->table_id; |
eefbf181 SH |
2150 | fr->duration_sec = ntohl(ofr->duration_sec); |
2151 | fr->duration_nsec = ntohl(ofr->duration_nsec); | |
2152 | fr->idle_timeout = ntohs(ofr->idle_timeout); | |
2153 | fr->hard_timeout = ntohs(ofr->hard_timeout); | |
2154 | fr->packet_count = ntohll(ofr->packet_count); | |
2155 | fr->byte_count = ntohll(ofr->byte_count); | |
2156 | } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) { | |
9b045a0c BP |
2157 | const struct ofp_flow_removed *ofr; |
2158 | ||
982697a4 BP |
2159 | ofr = ofpbuf_pull(&b, sizeof *ofr); |
2160 | ||
81a76618 BP |
2161 | ofputil_match_from_ofp10_match(&ofr->match, &fr->match); |
2162 | fr->priority = ntohs(ofr->priority); | |
9b045a0c BP |
2163 | fr->cookie = ofr->cookie; |
2164 | fr->reason = ofr->reason; | |
95216219 | 2165 | fr->table_id = 255; |
9b045a0c BP |
2166 | fr->duration_sec = ntohl(ofr->duration_sec); |
2167 | fr->duration_nsec = ntohl(ofr->duration_nsec); | |
2168 | fr->idle_timeout = ntohs(ofr->idle_timeout); | |
fa2bad0f | 2169 | fr->hard_timeout = 0; |
9b045a0c BP |
2170 | fr->packet_count = ntohll(ofr->packet_count); |
2171 | fr->byte_count = ntohll(ofr->byte_count); | |
982697a4 | 2172 | } else if (raw == OFPRAW_NXT_FLOW_REMOVED) { |
9b045a0c | 2173 | struct nx_flow_removed *nfr; |
c2725b60 | 2174 | enum ofperr error; |
9b045a0c | 2175 | |
9b045a0c | 2176 | nfr = ofpbuf_pull(&b, sizeof *nfr); |
81a76618 BP |
2177 | error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match, |
2178 | NULL, NULL); | |
9b045a0c BP |
2179 | if (error) { |
2180 | return error; | |
2181 | } | |
2182 | if (b.size) { | |
90bf1e07 | 2183 | return OFPERR_OFPBRC_BAD_LEN; |
9b045a0c BP |
2184 | } |
2185 | ||
81a76618 | 2186 | fr->priority = ntohs(nfr->priority); |
9b045a0c BP |
2187 | fr->cookie = nfr->cookie; |
2188 | fr->reason = nfr->reason; | |
95216219 | 2189 | fr->table_id = 255; |
9b045a0c BP |
2190 | fr->duration_sec = ntohl(nfr->duration_sec); |
2191 | fr->duration_nsec = ntohl(nfr->duration_nsec); | |
2192 | fr->idle_timeout = ntohs(nfr->idle_timeout); | |
fa2bad0f | 2193 | fr->hard_timeout = 0; |
9b045a0c BP |
2194 | fr->packet_count = ntohll(nfr->packet_count); |
2195 | fr->byte_count = ntohll(nfr->byte_count); | |
2196 | } else { | |
2197 | NOT_REACHED(); | |
2198 | } | |
2199 | ||
2200 | return 0; | |
2201 | } | |
2202 | ||
588cd7b5 | 2203 | /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or |
27527aa0 | 2204 | * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the |
588cd7b5 BP |
2205 | * message. */ |
2206 | struct ofpbuf * | |
2207 | ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr, | |
27527aa0 | 2208 | enum ofputil_protocol protocol) |
588cd7b5 BP |
2209 | { |
2210 | struct ofpbuf *msg; | |
2211 | ||
27527aa0 | 2212 | switch (protocol) { |
85813857 | 2213 | case OFPUTIL_P_OF12_OXM: { |
83974732 SH |
2214 | struct ofp12_flow_removed *ofr; |
2215 | ||
2216 | msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED, | |
2217 | ofputil_protocol_to_ofp_version(protocol), | |
2218 | htonl(0), NXM_TYPICAL_LEN); | |
2219 | ofr = ofpbuf_put_zeros(msg, sizeof *ofr); | |
2220 | ofr->cookie = fr->cookie; | |
81a76618 | 2221 | ofr->priority = htons(fr->priority); |
83974732 | 2222 | ofr->reason = fr->reason; |
95216219 | 2223 | ofr->table_id = fr->table_id; |
83974732 SH |
2224 | ofr->duration_sec = htonl(fr->duration_sec); |
2225 | ofr->duration_nsec = htonl(fr->duration_nsec); | |
2226 | ofr->idle_timeout = htons(fr->idle_timeout); | |
fa2bad0f | 2227 | ofr->hard_timeout = htons(fr->hard_timeout); |
83974732 SH |
2228 | ofr->packet_count = htonll(fr->packet_count); |
2229 | ofr->byte_count = htonll(fr->byte_count); | |
81a76618 | 2230 | oxm_put_match(msg, &fr->match); |
83974732 SH |
2231 | break; |
2232 | } | |
2233 | ||
85813857 BP |
2234 | case OFPUTIL_P_OF10_STD: |
2235 | case OFPUTIL_P_OF10_STD_TID: { | |
588cd7b5 BP |
2236 | struct ofp_flow_removed *ofr; |
2237 | ||
982697a4 BP |
2238 | msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION, |
2239 | htonl(0), 0); | |
2240 | ofr = ofpbuf_put_zeros(msg, sizeof *ofr); | |
81a76618 | 2241 | ofputil_match_to_ofp10_match(&fr->match, &ofr->match); |
7fb563b9 | 2242 | ofr->cookie = fr->cookie; |
81a76618 | 2243 | ofr->priority = htons(fr->priority); |
588cd7b5 BP |
2244 | ofr->reason = fr->reason; |
2245 | ofr->duration_sec = htonl(fr->duration_sec); | |
2246 | ofr->duration_nsec = htonl(fr->duration_nsec); | |
2247 | ofr->idle_timeout = htons(fr->idle_timeout); | |
5e9d0469 BP |
2248 | ofr->packet_count = htonll(unknown_to_zero(fr->packet_count)); |
2249 | ofr->byte_count = htonll(unknown_to_zero(fr->byte_count)); | |
27527aa0 BP |
2250 | break; |
2251 | } | |
2252 | ||
85813857 BP |
2253 | case OFPUTIL_P_OF10_NXM: |
2254 | case OFPUTIL_P_OF10_NXM_TID: { | |
588cd7b5 BP |
2255 | struct nx_flow_removed *nfr; |
2256 | int match_len; | |
2257 | ||
982697a4 BP |
2258 | msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION, |
2259 | htonl(0), NXM_TYPICAL_LEN); | |
2260 | nfr = ofpbuf_put_zeros(msg, sizeof *nfr); | |
81a76618 | 2261 | match_len = nx_put_match(msg, &fr->match, 0, 0); |
588cd7b5 | 2262 | |
982697a4 | 2263 | nfr = msg->l3; |
588cd7b5 | 2264 | nfr->cookie = fr->cookie; |
81a76618 | 2265 | nfr->priority = htons(fr->priority); |
588cd7b5 BP |
2266 | nfr->reason = fr->reason; |
2267 | nfr->duration_sec = htonl(fr->duration_sec); | |
2268 | nfr->duration_nsec = htonl(fr->duration_nsec); | |
2269 | nfr->idle_timeout = htons(fr->idle_timeout); | |
2270 | nfr->match_len = htons(match_len); | |
2271 | nfr->packet_count = htonll(fr->packet_count); | |
2272 | nfr->byte_count = htonll(fr->byte_count); | |
27527aa0 BP |
2273 | break; |
2274 | } | |
2275 | ||
2276 | default: | |
588cd7b5 BP |
2277 | NOT_REACHED(); |
2278 | } | |
2279 | ||
2280 | return msg; | |
2281 | } | |
2282 | ||
7cfb9651 SH |
2283 | static void |
2284 | ofputil_decode_packet_in_finish(struct ofputil_packet_in *pin, | |
81a76618 | 2285 | struct match *match, struct ofpbuf *b) |
7cfb9651 SH |
2286 | { |
2287 | pin->packet = b->data; | |
2288 | pin->packet_len = b->size; | |
2289 | ||
81a76618 | 2290 | pin->fmd.in_port = match->flow.in_port; |
296e07ac | 2291 | pin->fmd.tun_id = match->flow.tunnel.tun_id; |
81a76618 BP |
2292 | pin->fmd.metadata = match->flow.metadata; |
2293 | memcpy(pin->fmd.regs, match->flow.regs, sizeof pin->fmd.regs); | |
7cfb9651 SH |
2294 | } |
2295 | ||
f7cc6bd8 | 2296 | enum ofperr |
65120a8a EJ |
2297 | ofputil_decode_packet_in(struct ofputil_packet_in *pin, |
2298 | const struct ofp_header *oh) | |
2299 | { | |
982697a4 BP |
2300 | enum ofpraw raw; |
2301 | struct ofpbuf b; | |
65120a8a | 2302 | |
65120a8a EJ |
2303 | memset(pin, 0, sizeof *pin); |
2304 | ||
982697a4 BP |
2305 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2306 | raw = ofpraw_pull_assert(&b); | |
7cfb9651 SH |
2307 | if (raw == OFPRAW_OFPT12_PACKET_IN) { |
2308 | const struct ofp12_packet_in *opi; | |
81a76618 | 2309 | struct match match; |
7cfb9651 SH |
2310 | int error; |
2311 | ||
2312 | opi = ofpbuf_pull(&b, sizeof *opi); | |
81a76618 | 2313 | error = oxm_pull_match_loose(&b, &match); |
7cfb9651 SH |
2314 | if (error) { |
2315 | return error; | |
2316 | } | |
2317 | ||
2318 | if (!ofpbuf_try_pull(&b, 2)) { | |
2319 | return OFPERR_OFPBRC_BAD_LEN; | |
2320 | } | |
2321 | ||
2322 | pin->reason = opi->reason; | |
2323 | pin->table_id = opi->table_id; | |
2324 | ||
2325 | pin->buffer_id = ntohl(opi->buffer_id); | |
2326 | pin->total_len = ntohs(opi->total_len); | |
2327 | ||
81a76618 | 2328 | ofputil_decode_packet_in_finish(pin, &match, &b); |
7cfb9651 | 2329 | } else if (raw == OFPRAW_OFPT10_PACKET_IN) { |
982697a4 BP |
2330 | const struct ofp_packet_in *opi; |
2331 | ||
2332 | opi = ofpbuf_pull(&b, offsetof(struct ofp_packet_in, data)); | |
65120a8a EJ |
2333 | |
2334 | pin->packet = opi->data; | |
982697a4 | 2335 | pin->packet_len = b.size; |
65120a8a | 2336 | |
5d6c3af0 | 2337 | pin->fmd.in_port = ntohs(opi->in_port); |
65120a8a EJ |
2338 | pin->reason = opi->reason; |
2339 | pin->buffer_id = ntohl(opi->buffer_id); | |
2340 | pin->total_len = ntohs(opi->total_len); | |
982697a4 | 2341 | } else if (raw == OFPRAW_NXT_PACKET_IN) { |
73dbf4ab | 2342 | const struct nx_packet_in *npi; |
81a76618 | 2343 | struct match match; |
54834960 EJ |
2344 | int error; |
2345 | ||
54834960 | 2346 | npi = ofpbuf_pull(&b, sizeof *npi); |
81a76618 | 2347 | error = nx_pull_match_loose(&b, ntohs(npi->match_len), &match, NULL, |
b5ae8913 | 2348 | NULL); |
54834960 EJ |
2349 | if (error) { |
2350 | return error; | |
2351 | } | |
2352 | ||
2353 | if (!ofpbuf_try_pull(&b, 2)) { | |
90bf1e07 | 2354 | return OFPERR_OFPBRC_BAD_LEN; |
54834960 EJ |
2355 | } |
2356 | ||
54834960 EJ |
2357 | pin->reason = npi->reason; |
2358 | pin->table_id = npi->table_id; | |
2359 | pin->cookie = npi->cookie; | |
2360 | ||
54834960 EJ |
2361 | pin->buffer_id = ntohl(npi->buffer_id); |
2362 | pin->total_len = ntohs(npi->total_len); | |
7cfb9651 | 2363 | |
81a76618 | 2364 | ofputil_decode_packet_in_finish(pin, &match, &b); |
65120a8a EJ |
2365 | } else { |
2366 | NOT_REACHED(); | |
2367 | } | |
2368 | ||
2369 | return 0; | |
2370 | } | |
2371 | ||
d94240ec | 2372 | static void |
81a76618 BP |
2373 | ofputil_packet_in_to_match(const struct ofputil_packet_in *pin, |
2374 | struct match *match) | |
d94240ec SH |
2375 | { |
2376 | int i; | |
2377 | ||
81a76618 | 2378 | match_init_catchall(match); |
42edbe39 | 2379 | if (pin->fmd.tun_id != htonll(0)) { |
81a76618 | 2380 | match_set_tun_id(match, pin->fmd.tun_id); |
42edbe39 BP |
2381 | } |
2382 | if (pin->fmd.metadata != htonll(0)) { | |
81a76618 | 2383 | match_set_metadata(match, pin->fmd.metadata); |
42edbe39 | 2384 | } |
d94240ec SH |
2385 | |
2386 | for (i = 0; i < FLOW_N_REGS; i++) { | |
42edbe39 | 2387 | if (pin->fmd.regs[i]) { |
81a76618 | 2388 | match_set_reg(match, i, pin->fmd.regs[i]); |
42edbe39 | 2389 | } |
d94240ec SH |
2390 | } |
2391 | ||
81a76618 | 2392 | match_set_in_port(match, pin->fmd.in_port); |
d94240ec SH |
2393 | } |
2394 | ||
54834960 EJ |
2395 | /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message |
2396 | * in the format specified by 'packet_in_format'. */ | |
ebb57021 | 2397 | struct ofpbuf * |
54834960 | 2398 | ofputil_encode_packet_in(const struct ofputil_packet_in *pin, |
d94240ec | 2399 | enum ofputil_protocol protocol, |
54834960 | 2400 | enum nx_packet_in_format packet_in_format) |
ebb57021 | 2401 | { |
54834960 EJ |
2402 | size_t send_len = MIN(pin->send_len, pin->packet_len); |
2403 | struct ofpbuf *packet; | |
ebb57021 BP |
2404 | |
2405 | /* Add OFPT_PACKET_IN. */ | |
85813857 | 2406 | if (protocol == OFPUTIL_P_OF12_OXM) { |
d94240ec | 2407 | struct ofp12_packet_in *opi; |
81a76618 | 2408 | struct match match; |
d94240ec | 2409 | |
81a76618 | 2410 | ofputil_packet_in_to_match(pin, &match); |
d94240ec SH |
2411 | |
2412 | /* The final argument is just an estimate of the space required. */ | |
2413 | packet = ofpraw_alloc_xid(OFPRAW_OFPT12_PACKET_IN, OFP12_VERSION, | |
2414 | htonl(0), (sizeof(struct flow_metadata) * 2 | |
2415 | + 2 + send_len)); | |
2416 | ofpbuf_put_zeros(packet, sizeof *opi); | |
81a76618 | 2417 | oxm_put_match(packet, &match); |
d94240ec SH |
2418 | ofpbuf_put_zeros(packet, 2); |
2419 | ofpbuf_put(packet, pin->packet, send_len); | |
2420 | ||
2421 | opi = packet->l3; | |
2422 | opi->buffer_id = htonl(pin->buffer_id); | |
2423 | opi->total_len = htons(pin->total_len); | |
2424 | opi->reason = pin->reason; | |
2425 | opi->table_id = pin->table_id; | |
2426 | } else if (packet_in_format == NXPIF_OPENFLOW10) { | |
54834960 EJ |
2427 | struct ofp_packet_in *opi; |
2428 | ||
982697a4 BP |
2429 | packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION, |
2430 | htonl(0), send_len); | |
2431 | opi = ofpbuf_put_zeros(packet, offsetof(struct ofp_packet_in, data)); | |
54834960 EJ |
2432 | opi->total_len = htons(pin->total_len); |
2433 | opi->in_port = htons(pin->fmd.in_port); | |
2434 | opi->reason = pin->reason; | |
2435 | opi->buffer_id = htonl(pin->buffer_id); | |
2436 | ||
2437 | ofpbuf_put(packet, pin->packet, send_len); | |
2438 | } else if (packet_in_format == NXPIF_NXM) { | |
73dbf4ab | 2439 | struct nx_packet_in *npi; |
81a76618 | 2440 | struct match match; |
54834960 | 2441 | size_t match_len; |
54834960 | 2442 | |
81a76618 | 2443 | ofputil_packet_in_to_match(pin, &match); |
54834960 | 2444 | |
982697a4 BP |
2445 | /* The final argument is just an estimate of the space required. */ |
2446 | packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION, | |
2447 | htonl(0), (sizeof(struct flow_metadata) * 2 | |
2448 | + 2 + send_len)); | |
54834960 | 2449 | ofpbuf_put_zeros(packet, sizeof *npi); |
81a76618 | 2450 | match_len = nx_put_match(packet, &match, 0, 0); |
54834960 EJ |
2451 | ofpbuf_put_zeros(packet, 2); |
2452 | ofpbuf_put(packet, pin->packet, send_len); | |
2453 | ||
982697a4 | 2454 | npi = packet->l3; |
54834960 EJ |
2455 | npi->buffer_id = htonl(pin->buffer_id); |
2456 | npi->total_len = htons(pin->total_len); | |
2457 | npi->reason = pin->reason; | |
2458 | npi->table_id = pin->table_id; | |
2459 | npi->cookie = pin->cookie; | |
2460 | npi->match_len = htons(match_len); | |
2461 | } else { | |
2462 | NOT_REACHED(); | |
2463 | } | |
982697a4 | 2464 | ofpmsg_update_length(packet); |
54834960 EJ |
2465 | |
2466 | return packet; | |
ebb57021 BP |
2467 | } |
2468 | ||
7c1a76a4 BP |
2469 | const char * |
2470 | ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason) | |
2471 | { | |
2472 | static char s[INT_STRLEN(int) + 1]; | |
2473 | ||
2474 | switch (reason) { | |
2475 | case OFPR_NO_MATCH: | |
2476 | return "no_match"; | |
2477 | case OFPR_ACTION: | |
2478 | return "action"; | |
2479 | case OFPR_INVALID_TTL: | |
2480 | return "invalid_ttl"; | |
2481 | ||
2482 | case OFPR_N_REASONS: | |
2483 | default: | |
2484 | sprintf(s, "%d", (int) reason); | |
2485 | return s; | |
2486 | } | |
2487 | } | |
2488 | ||
2489 | bool | |
2490 | ofputil_packet_in_reason_from_string(const char *s, | |
2491 | enum ofp_packet_in_reason *reason) | |
2492 | { | |
2493 | int i; | |
2494 | ||
2495 | for (i = 0; i < OFPR_N_REASONS; i++) { | |
2496 | if (!strcasecmp(s, ofputil_packet_in_reason_to_string(i))) { | |
2497 | *reason = i; | |
2498 | return true; | |
2499 | } | |
2500 | } | |
2501 | return false; | |
2502 | } | |
2503 | ||
f25d0cf3 BP |
2504 | /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in |
2505 | * 'po'. | |
2506 | * | |
2507 | * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out | |
2508 | * message's actions. The caller must initialize 'ofpacts' and retains | |
2509 | * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer. | |
2510 | * | |
2511 | * Returns 0 if successful, otherwise an OFPERR_* value. */ | |
c6a93eb7 BP |
2512 | enum ofperr |
2513 | ofputil_decode_packet_out(struct ofputil_packet_out *po, | |
982697a4 | 2514 | const struct ofp_header *oh, |
f25d0cf3 | 2515 | struct ofpbuf *ofpacts) |
c6a93eb7 | 2516 | { |
982697a4 | 2517 | enum ofpraw raw; |
c6a93eb7 BP |
2518 | struct ofpbuf b; |
2519 | ||
982697a4 BP |
2520 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2521 | raw = ofpraw_pull_assert(&b); | |
982697a4 | 2522 | |
eb5ee596 SH |
2523 | if (raw == OFPRAW_OFPT11_PACKET_OUT) { |
2524 | enum ofperr error; | |
2525 | const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo); | |
2526 | ||
2527 | po->buffer_id = ntohl(opo->buffer_id); | |
2528 | error = ofputil_port_from_ofp11(opo->in_port, &po->in_port); | |
2529 | if (error) { | |
2530 | return error; | |
2531 | } | |
2532 | ||
2533 | error = ofpacts_pull_openflow11_actions(&b, ntohs(opo->actions_len), | |
2534 | ofpacts); | |
2535 | if (error) { | |
2536 | return error; | |
2537 | } | |
eb5ee596 | 2538 | } else if (raw == OFPRAW_OFPT10_PACKET_OUT) { |
8a6bc7cd SH |
2539 | enum ofperr error; |
2540 | const struct ofp_packet_out *opo = ofpbuf_pull(&b, sizeof *opo); | |
2541 | ||
2542 | po->buffer_id = ntohl(opo->buffer_id); | |
2543 | po->in_port = ntohs(opo->in_port); | |
2544 | ||
2545 | error = ofpacts_pull_openflow10(&b, ntohs(opo->actions_len), ofpacts); | |
2546 | if (error) { | |
2547 | return error; | |
2548 | } | |
2549 | } else { | |
2550 | NOT_REACHED(); | |
2551 | } | |
2552 | ||
c6a93eb7 | 2553 | if (po->in_port >= OFPP_MAX && po->in_port != OFPP_LOCAL |
751c7785 | 2554 | && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) { |
c6a93eb7 BP |
2555 | VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16, |
2556 | po->in_port); | |
2e1bfcb6 | 2557 | return OFPERR_OFPBRC_BAD_PORT; |
c6a93eb7 BP |
2558 | } |
2559 | ||
f25d0cf3 BP |
2560 | po->ofpacts = ofpacts->data; |
2561 | po->ofpacts_len = ofpacts->size; | |
c6a93eb7 BP |
2562 | |
2563 | if (po->buffer_id == UINT32_MAX) { | |
2564 | po->packet = b.data; | |
2565 | po->packet_len = b.size; | |
2566 | } else { | |
2567 | po->packet = NULL; | |
2568 | po->packet_len = 0; | |
2569 | } | |
2570 | ||
2571 | return 0; | |
2572 | } | |
6c038611 BP |
2573 | \f |
2574 | /* ofputil_phy_port */ | |
2575 | ||
2576 | /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */ | |
2577 | BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */ | |
2578 | BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */ | |
2579 | BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */ | |
2580 | BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */ | |
2581 | BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */ | |
2582 | BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */ | |
2583 | BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */ | |
2584 | ||
2585 | /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */ | |
9e1fd49b BP |
2586 | BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4)); |
2587 | BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4)); | |
2588 | BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4)); | |
2589 | BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4)); | |
2590 | BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4)); | |
6c038611 | 2591 | |
9e1fd49b BP |
2592 | static enum netdev_features |
2593 | netdev_port_features_from_ofp10(ovs_be32 ofp10_) | |
6c038611 BP |
2594 | { |
2595 | uint32_t ofp10 = ntohl(ofp10_); | |
2596 | return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4); | |
2597 | } | |
2598 | ||
9e1fd49b BP |
2599 | static ovs_be32 |
2600 | netdev_port_features_to_ofp10(enum netdev_features features) | |
6c038611 BP |
2601 | { |
2602 | return htonl((features & 0x7f) | ((features & 0xf800) >> 4)); | |
2603 | } | |
c6a93eb7 | 2604 | |
9e1fd49b BP |
2605 | BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */ |
2606 | BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */ | |
2607 | BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */ | |
2608 | BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */ | |
2609 | BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */ | |
2610 | BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */ | |
2611 | BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */ | |
2612 | BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */ | |
2613 | BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */ | |
2614 | BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */ | |
2615 | BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */ | |
2616 | BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */ | |
2617 | BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */ | |
2618 | BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */ | |
2619 | BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */ | |
2620 | BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */ | |
2621 | ||
2622 | static enum netdev_features | |
2623 | netdev_port_features_from_ofp11(ovs_be32 ofp11) | |
2624 | { | |
2625 | return ntohl(ofp11) & 0xffff; | |
2626 | } | |
2627 | ||
2628 | static ovs_be32 | |
2629 | netdev_port_features_to_ofp11(enum netdev_features features) | |
2630 | { | |
2631 | return htonl(features & 0xffff); | |
2632 | } | |
2633 | ||
2634 | static enum ofperr | |
2635 | ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp, | |
2636 | const struct ofp10_phy_port *opp) | |
2637 | { | |
2638 | memset(pp, 0, sizeof *pp); | |
2639 | ||
2640 | pp->port_no = ntohs(opp->port_no); | |
2641 | memcpy(pp->hw_addr, opp->hw_addr, OFP_ETH_ALEN); | |
2642 | ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN); | |
2643 | ||
2644 | pp->config = ntohl(opp->config) & OFPPC10_ALL; | |
2645 | pp->state = ntohl(opp->state) & OFPPS10_ALL; | |
2646 | ||
2647 | pp->curr = netdev_port_features_from_ofp10(opp->curr); | |
2648 | pp->advertised = netdev_port_features_from_ofp10(opp->advertised); | |
2649 | pp->supported = netdev_port_features_from_ofp10(opp->supported); | |
2650 | pp->peer = netdev_port_features_from_ofp10(opp->peer); | |
2651 | ||
d02a5f8e BP |
2652 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2653 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
9e1fd49b BP |
2654 | |
2655 | return 0; | |
2656 | } | |
2657 | ||
2658 | static enum ofperr | |
2659 | ofputil_decode_ofp11_port(struct ofputil_phy_port *pp, | |
2660 | const struct ofp11_port *op) | |
2661 | { | |
2662 | enum ofperr error; | |
2663 | ||
2664 | memset(pp, 0, sizeof *pp); | |
2665 | ||
2666 | error = ofputil_port_from_ofp11(op->port_no, &pp->port_no); | |
2667 | if (error) { | |
2668 | return error; | |
2669 | } | |
2670 | memcpy(pp->hw_addr, op->hw_addr, OFP_ETH_ALEN); | |
2671 | ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN); | |
2672 | ||
2673 | pp->config = ntohl(op->config) & OFPPC11_ALL; | |
2674 | pp->state = ntohl(op->state) & OFPPC11_ALL; | |
2675 | ||
2676 | pp->curr = netdev_port_features_from_ofp11(op->curr); | |
2677 | pp->advertised = netdev_port_features_from_ofp11(op->advertised); | |
2678 | pp->supported = netdev_port_features_from_ofp11(op->supported); | |
2679 | pp->peer = netdev_port_features_from_ofp11(op->peer); | |
2680 | ||
2681 | pp->curr_speed = ntohl(op->curr_speed); | |
2682 | pp->max_speed = ntohl(op->max_speed); | |
2683 | ||
2684 | return 0; | |
2685 | } | |
2686 | ||
5b5a3a67 | 2687 | static size_t |
2e3fa633 SH |
2688 | ofputil_get_phy_port_size(enum ofp_version ofp_version) |
2689 | { | |
2690 | switch (ofp_version) { | |
2691 | case OFP10_VERSION: | |
2692 | return sizeof(struct ofp10_phy_port); | |
2693 | case OFP11_VERSION: | |
2694 | case OFP12_VERSION: | |
2695 | return sizeof(struct ofp11_port); | |
2696 | default: | |
2697 | NOT_REACHED(); | |
2698 | } | |
5b5a3a67 JP |
2699 | } |
2700 | ||
9e1fd49b BP |
2701 | static void |
2702 | ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp, | |
2703 | struct ofp10_phy_port *opp) | |
2704 | { | |
2705 | memset(opp, 0, sizeof *opp); | |
2706 | ||
2707 | opp->port_no = htons(pp->port_no); | |
2708 | memcpy(opp->hw_addr, pp->hw_addr, ETH_ADDR_LEN); | |
2709 | ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN); | |
2710 | ||
2711 | opp->config = htonl(pp->config & OFPPC10_ALL); | |
2712 | opp->state = htonl(pp->state & OFPPS10_ALL); | |
2713 | ||
2714 | opp->curr = netdev_port_features_to_ofp10(pp->curr); | |
2715 | opp->advertised = netdev_port_features_to_ofp10(pp->advertised); | |
2716 | opp->supported = netdev_port_features_to_ofp10(pp->supported); | |
2717 | opp->peer = netdev_port_features_to_ofp10(pp->peer); | |
2718 | } | |
2719 | ||
2720 | static void | |
2721 | ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp, | |
2722 | struct ofp11_port *op) | |
2723 | { | |
2724 | memset(op, 0, sizeof *op); | |
2725 | ||
2726 | op->port_no = ofputil_port_to_ofp11(pp->port_no); | |
2727 | memcpy(op->hw_addr, pp->hw_addr, ETH_ADDR_LEN); | |
2728 | ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN); | |
2729 | ||
2730 | op->config = htonl(pp->config & OFPPC11_ALL); | |
2731 | op->state = htonl(pp->state & OFPPS11_ALL); | |
2732 | ||
2733 | op->curr = netdev_port_features_to_ofp11(pp->curr); | |
2734 | op->advertised = netdev_port_features_to_ofp11(pp->advertised); | |
2735 | op->supported = netdev_port_features_to_ofp11(pp->supported); | |
2736 | op->peer = netdev_port_features_to_ofp11(pp->peer); | |
2737 | ||
2738 | op->curr_speed = htonl(pp->curr_speed); | |
2739 | op->max_speed = htonl(pp->max_speed); | |
2740 | } | |
2741 | ||
2742 | static void | |
2e3fa633 SH |
2743 | ofputil_put_phy_port(enum ofp_version ofp_version, |
2744 | const struct ofputil_phy_port *pp, struct ofpbuf *b) | |
9e1fd49b | 2745 | { |
2e3fa633 SH |
2746 | switch (ofp_version) { |
2747 | case OFP10_VERSION: { | |
9e1fd49b BP |
2748 | struct ofp10_phy_port *opp; |
2749 | if (b->size + sizeof *opp <= UINT16_MAX) { | |
2750 | opp = ofpbuf_put_uninit(b, sizeof *opp); | |
2751 | ofputil_encode_ofp10_phy_port(pp, opp); | |
2752 | } | |
2e3fa633 SH |
2753 | break; |
2754 | } | |
2755 | ||
2756 | case OFP11_VERSION: | |
2757 | case OFP12_VERSION: { | |
9e1fd49b BP |
2758 | struct ofp11_port *op; |
2759 | if (b->size + sizeof *op <= UINT16_MAX) { | |
2760 | op = ofpbuf_put_uninit(b, sizeof *op); | |
2761 | ofputil_encode_ofp11_port(pp, op); | |
2762 | } | |
2e3fa633 SH |
2763 | break; |
2764 | } | |
2765 | ||
2766 | default: | |
2767 | NOT_REACHED(); | |
9e1fd49b BP |
2768 | } |
2769 | } | |
2be393ed JP |
2770 | |
2771 | void | |
2e3fa633 | 2772 | ofputil_append_port_desc_stats_reply(enum ofp_version ofp_version, |
2be393ed JP |
2773 | const struct ofputil_phy_port *pp, |
2774 | struct list *replies) | |
2775 | { | |
2e3fa633 SH |
2776 | switch (ofp_version) { |
2777 | case OFP10_VERSION: { | |
2be393ed JP |
2778 | struct ofp10_phy_port *opp; |
2779 | ||
982697a4 | 2780 | opp = ofpmp_append(replies, sizeof *opp); |
2be393ed | 2781 | ofputil_encode_ofp10_phy_port(pp, opp); |
2e3fa633 SH |
2782 | break; |
2783 | } | |
2784 | ||
2785 | case OFP11_VERSION: | |
2786 | case OFP12_VERSION: { | |
2be393ed JP |
2787 | struct ofp11_port *op; |
2788 | ||
982697a4 | 2789 | op = ofpmp_append(replies, sizeof *op); |
2be393ed | 2790 | ofputil_encode_ofp11_port(pp, op); |
2e3fa633 SH |
2791 | break; |
2792 | } | |
2793 | ||
2794 | default: | |
2795 | NOT_REACHED(); | |
2be393ed JP |
2796 | } |
2797 | } | |
9e1fd49b BP |
2798 | \f |
2799 | /* ofputil_switch_features */ | |
2800 | ||
2801 | #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \ | |
60202987 | 2802 | OFPC_IP_REASM | OFPC_QUEUE_STATS) |
9e1fd49b BP |
2803 | BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS); |
2804 | BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS); | |
2805 | BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS); | |
2806 | BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM); | |
2807 | BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS); | |
2808 | BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP); | |
2809 | ||
2810 | struct ofputil_action_bit_translation { | |
2811 | enum ofputil_action_bitmap ofputil_bit; | |
2812 | int of_bit; | |
2813 | }; | |
2814 | ||
2815 | static const struct ofputil_action_bit_translation of10_action_bits[] = { | |
2816 | { OFPUTIL_A_OUTPUT, OFPAT10_OUTPUT }, | |
2817 | { OFPUTIL_A_SET_VLAN_VID, OFPAT10_SET_VLAN_VID }, | |
2818 | { OFPUTIL_A_SET_VLAN_PCP, OFPAT10_SET_VLAN_PCP }, | |
2819 | { OFPUTIL_A_STRIP_VLAN, OFPAT10_STRIP_VLAN }, | |
2820 | { OFPUTIL_A_SET_DL_SRC, OFPAT10_SET_DL_SRC }, | |
2821 | { OFPUTIL_A_SET_DL_DST, OFPAT10_SET_DL_DST }, | |
2822 | { OFPUTIL_A_SET_NW_SRC, OFPAT10_SET_NW_SRC }, | |
2823 | { OFPUTIL_A_SET_NW_DST, OFPAT10_SET_NW_DST }, | |
2824 | { OFPUTIL_A_SET_NW_TOS, OFPAT10_SET_NW_TOS }, | |
2825 | { OFPUTIL_A_SET_TP_SRC, OFPAT10_SET_TP_SRC }, | |
2826 | { OFPUTIL_A_SET_TP_DST, OFPAT10_SET_TP_DST }, | |
2827 | { OFPUTIL_A_ENQUEUE, OFPAT10_ENQUEUE }, | |
2828 | { 0, 0 }, | |
2829 | }; | |
2830 | ||
9e1fd49b BP |
2831 | static enum ofputil_action_bitmap |
2832 | decode_action_bits(ovs_be32 of_actions, | |
2833 | const struct ofputil_action_bit_translation *x) | |
2834 | { | |
2835 | enum ofputil_action_bitmap ofputil_actions; | |
2836 | ||
2837 | ofputil_actions = 0; | |
2838 | for (; x->ofputil_bit; x++) { | |
2839 | if (of_actions & htonl(1u << x->of_bit)) { | |
2840 | ofputil_actions |= x->ofputil_bit; | |
2841 | } | |
2842 | } | |
2843 | return ofputil_actions; | |
2844 | } | |
2845 | ||
60202987 SH |
2846 | static uint32_t |
2847 | ofputil_capabilities_mask(enum ofp_version ofp_version) | |
2848 | { | |
2849 | /* Handle capabilities whose bit is unique for all Open Flow versions */ | |
2850 | switch (ofp_version) { | |
2851 | case OFP10_VERSION: | |
2852 | case OFP11_VERSION: | |
2853 | return OFPC_COMMON | OFPC_ARP_MATCH_IP; | |
2854 | case OFP12_VERSION: | |
2855 | return OFPC_COMMON | OFPC12_PORT_BLOCKED; | |
2856 | default: | |
2857 | /* Caller needs to check osf->header.version itself */ | |
2858 | return 0; | |
2859 | } | |
2860 | } | |
2861 | ||
9e1fd49b BP |
2862 | /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an |
2863 | * abstract representation in '*features'. Initializes '*b' to iterate over | |
2864 | * the OpenFlow port structures following 'osf' with later calls to | |
2be393ed | 2865 | * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an |
9e1fd49b BP |
2866 | * OFPERR_* value. */ |
2867 | enum ofperr | |
982697a4 | 2868 | ofputil_decode_switch_features(const struct ofp_header *oh, |
9e1fd49b BP |
2869 | struct ofputil_switch_features *features, |
2870 | struct ofpbuf *b) | |
2871 | { | |
982697a4 BP |
2872 | const struct ofp_switch_features *osf; |
2873 | enum ofpraw raw; | |
2874 | ||
2875 | ofpbuf_use_const(b, oh, ntohs(oh->length)); | |
2876 | raw = ofpraw_pull_assert(b); | |
9e1fd49b | 2877 | |
982697a4 | 2878 | osf = ofpbuf_pull(b, sizeof *osf); |
9e1fd49b BP |
2879 | features->datapath_id = ntohll(osf->datapath_id); |
2880 | features->n_buffers = ntohl(osf->n_buffers); | |
2881 | features->n_tables = osf->n_tables; | |
2882 | ||
60202987 SH |
2883 | features->capabilities = ntohl(osf->capabilities) & |
2884 | ofputil_capabilities_mask(oh->version); | |
9e1fd49b | 2885 | |
982697a4 | 2886 | if (b->size % ofputil_get_phy_port_size(oh->version)) { |
5b5a3a67 JP |
2887 | return OFPERR_OFPBRC_BAD_LEN; |
2888 | } | |
2889 | ||
982697a4 | 2890 | if (raw == OFPRAW_OFPT10_FEATURES_REPLY) { |
9e1fd49b BP |
2891 | if (osf->capabilities & htonl(OFPC10_STP)) { |
2892 | features->capabilities |= OFPUTIL_C_STP; | |
2893 | } | |
2894 | features->actions = decode_action_bits(osf->actions, of10_action_bits); | |
982697a4 | 2895 | } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY) { |
9e1fd49b BP |
2896 | if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) { |
2897 | features->capabilities |= OFPUTIL_C_GROUP_STATS; | |
2898 | } | |
34b28fc7 | 2899 | features->actions = 0; |
9e1fd49b BP |
2900 | } else { |
2901 | return OFPERR_OFPBRC_BAD_VERSION; | |
2902 | } | |
2903 | ||
2904 | return 0; | |
2905 | } | |
2906 | ||
982697a4 | 2907 | /* Returns true if the maximum number of ports are in 'oh'. */ |
347b7ac4 | 2908 | static bool |
982697a4 | 2909 | max_ports_in_features(const struct ofp_header *oh) |
347b7ac4 | 2910 | { |
982697a4 BP |
2911 | size_t pp_size = ofputil_get_phy_port_size(oh->version); |
2912 | return ntohs(oh->length) + pp_size > UINT16_MAX; | |
347b7ac4 JP |
2913 | } |
2914 | ||
2915 | /* Given a buffer 'b' that contains a Features Reply message, checks if | |
2916 | * it contains the maximum number of ports that will fit. If so, it | |
2917 | * returns true and removes the ports from the message. The caller | |
2918 | * should then send an OFPST_PORT_DESC stats request to get the ports, | |
2919 | * since the switch may have more ports than could be represented in the | |
2920 | * Features Reply. Otherwise, returns false. | |
2921 | */ | |
2922 | bool | |
2923 | ofputil_switch_features_ports_trunc(struct ofpbuf *b) | |
2924 | { | |
982697a4 | 2925 | struct ofp_header *oh = b->data; |
347b7ac4 | 2926 | |
982697a4 | 2927 | if (max_ports_in_features(oh)) { |
347b7ac4 | 2928 | /* Remove all the ports. */ |
982697a4 BP |
2929 | b->size = (sizeof(struct ofp_header) |
2930 | + sizeof(struct ofp_switch_features)); | |
2931 | ofpmsg_update_length(b); | |
347b7ac4 JP |
2932 | |
2933 | return true; | |
2934 | } | |
2935 | ||
2936 | return false; | |
2937 | } | |
2938 | ||
9e1fd49b BP |
2939 | static ovs_be32 |
2940 | encode_action_bits(enum ofputil_action_bitmap ofputil_actions, | |
2941 | const struct ofputil_action_bit_translation *x) | |
2942 | { | |
2943 | uint32_t of_actions; | |
2944 | ||
2945 | of_actions = 0; | |
2946 | for (; x->ofputil_bit; x++) { | |
2947 | if (ofputil_actions & x->ofputil_bit) { | |
2948 | of_actions |= 1 << x->of_bit; | |
2949 | } | |
2950 | } | |
2951 | return htonl(of_actions); | |
2952 | } | |
2953 | ||
2954 | /* Returns a buffer owned by the caller that encodes 'features' in the format | |
2955 | * required by 'protocol' with the given 'xid'. The caller should append port | |
2956 | * information to the buffer with subsequent calls to | |
2957 | * ofputil_put_switch_features_port(). */ | |
2958 | struct ofpbuf * | |
2959 | ofputil_encode_switch_features(const struct ofputil_switch_features *features, | |
2960 | enum ofputil_protocol protocol, ovs_be32 xid) | |
2961 | { | |
2962 | struct ofp_switch_features *osf; | |
2963 | struct ofpbuf *b; | |
2e3fa633 SH |
2964 | enum ofp_version version; |
2965 | enum ofpraw raw; | |
982697a4 BP |
2966 | |
2967 | version = ofputil_protocol_to_ofp_version(protocol); | |
2e3fa633 SH |
2968 | switch (version) { |
2969 | case OFP10_VERSION: | |
2970 | raw = OFPRAW_OFPT10_FEATURES_REPLY; | |
2971 | break; | |
2972 | case OFP11_VERSION: | |
2973 | case OFP12_VERSION: | |
2974 | raw = OFPRAW_OFPT11_FEATURES_REPLY; | |
2975 | break; | |
2976 | default: | |
2977 | NOT_REACHED(); | |
2978 | } | |
2979 | b = ofpraw_alloc_xid(raw, version, xid, 0); | |
982697a4 | 2980 | osf = ofpbuf_put_zeros(b, sizeof *osf); |
9e1fd49b BP |
2981 | osf->datapath_id = htonll(features->datapath_id); |
2982 | osf->n_buffers = htonl(features->n_buffers); | |
2983 | osf->n_tables = features->n_tables; | |
2984 | ||
2985 | osf->capabilities = htonl(features->capabilities & OFPC_COMMON); | |
60202987 SH |
2986 | osf->capabilities = htonl(features->capabilities & |
2987 | ofputil_capabilities_mask(version)); | |
2e3fa633 SH |
2988 | switch (version) { |
2989 | case OFP10_VERSION: | |
9e1fd49b BP |
2990 | if (features->capabilities & OFPUTIL_C_STP) { |
2991 | osf->capabilities |= htonl(OFPC10_STP); | |
2992 | } | |
2993 | osf->actions = encode_action_bits(features->actions, of10_action_bits); | |
2e3fa633 SH |
2994 | break; |
2995 | case OFP11_VERSION: | |
2996 | case OFP12_VERSION: | |
9e1fd49b BP |
2997 | if (features->capabilities & OFPUTIL_C_GROUP_STATS) { |
2998 | osf->capabilities |= htonl(OFPC11_GROUP_STATS); | |
2999 | } | |
2e3fa633 SH |
3000 | break; |
3001 | default: | |
3002 | NOT_REACHED(); | |
9e1fd49b BP |
3003 | } |
3004 | ||
3005 | return b; | |
3006 | } | |
3007 | ||
3008 | /* Encodes 'pp' into the format required by the switch_features message already | |
3009 | * in 'b', which should have been returned by ofputil_encode_switch_features(), | |
3010 | * and appends the encoded version to 'b'. */ | |
3011 | void | |
3012 | ofputil_put_switch_features_port(const struct ofputil_phy_port *pp, | |
3013 | struct ofpbuf *b) | |
3014 | { | |
982697a4 | 3015 | const struct ofp_header *oh = b->data; |
9e1fd49b | 3016 | |
982697a4 | 3017 | ofputil_put_phy_port(oh->version, pp, b); |
9e1fd49b BP |
3018 | } |
3019 | \f | |
3020 | /* ofputil_port_status */ | |
3021 | ||
3022 | /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form | |
3023 | * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */ | |
3024 | enum ofperr | |
982697a4 | 3025 | ofputil_decode_port_status(const struct ofp_header *oh, |
9e1fd49b BP |
3026 | struct ofputil_port_status *ps) |
3027 | { | |
982697a4 | 3028 | const struct ofp_port_status *ops; |
9e1fd49b BP |
3029 | struct ofpbuf b; |
3030 | int retval; | |
3031 | ||
982697a4 BP |
3032 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
3033 | ofpraw_pull_assert(&b); | |
3034 | ops = ofpbuf_pull(&b, sizeof *ops); | |
3035 | ||
9e1fd49b BP |
3036 | if (ops->reason != OFPPR_ADD && |
3037 | ops->reason != OFPPR_DELETE && | |
3038 | ops->reason != OFPPR_MODIFY) { | |
3039 | return OFPERR_NXBRC_BAD_REASON; | |
3040 | } | |
3041 | ps->reason = ops->reason; | |
3042 | ||
982697a4 | 3043 | retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc); |
9e1fd49b BP |
3044 | assert(retval != EOF); |
3045 | return retval; | |
3046 | } | |
3047 | ||
3048 | /* Converts the abstract form of a "port status" message in '*ps' into an | |
3049 | * OpenFlow message suitable for 'protocol', and returns that encoded form in | |
3050 | * a buffer owned by the caller. */ | |
3051 | struct ofpbuf * | |
3052 | ofputil_encode_port_status(const struct ofputil_port_status *ps, | |
3053 | enum ofputil_protocol protocol) | |
3054 | { | |
3055 | struct ofp_port_status *ops; | |
3056 | struct ofpbuf *b; | |
2e3fa633 SH |
3057 | enum ofp_version version; |
3058 | enum ofpraw raw; | |
982697a4 BP |
3059 | |
3060 | version = ofputil_protocol_to_ofp_version(protocol); | |
2e3fa633 SH |
3061 | switch (version) { |
3062 | case OFP10_VERSION: | |
3063 | raw = OFPRAW_OFPT10_PORT_STATUS; | |
3064 | break; | |
3065 | ||
3066 | case OFP11_VERSION: | |
3067 | case OFP12_VERSION: | |
3068 | raw = OFPRAW_OFPT11_PORT_STATUS; | |
3069 | break; | |
3070 | ||
3071 | default: | |
3072 | NOT_REACHED(); | |
3073 | } | |
3074 | ||
3075 | b = ofpraw_alloc_xid(raw, version, htonl(0), 0); | |
982697a4 | 3076 | ops = ofpbuf_put_zeros(b, sizeof *ops); |
9e1fd49b | 3077 | ops->reason = ps->reason; |
982697a4 BP |
3078 | ofputil_put_phy_port(version, &ps->desc, b); |
3079 | ofpmsg_update_length(b); | |
9e1fd49b BP |
3080 | return b; |
3081 | } | |
3082 | \f | |
3083 | /* ofputil_port_mod */ | |
3084 | ||
3085 | /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in | |
3086 | * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */ | |
3087 | enum ofperr | |
3088 | ofputil_decode_port_mod(const struct ofp_header *oh, | |
3089 | struct ofputil_port_mod *pm) | |
3090 | { | |
982697a4 BP |
3091 | enum ofpraw raw; |
3092 | struct ofpbuf b; | |
9e1fd49b | 3093 | |
982697a4 BP |
3094 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
3095 | raw = ofpraw_pull_assert(&b); | |
3096 | ||
3097 | if (raw == OFPRAW_OFPT10_PORT_MOD) { | |
3098 | const struct ofp10_port_mod *opm = b.data; | |
9e1fd49b BP |
3099 | |
3100 | pm->port_no = ntohs(opm->port_no); | |
3101 | memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN); | |
3102 | pm->config = ntohl(opm->config) & OFPPC10_ALL; | |
3103 | pm->mask = ntohl(opm->mask) & OFPPC10_ALL; | |
3104 | pm->advertise = netdev_port_features_from_ofp10(opm->advertise); | |
982697a4 BP |
3105 | } else if (raw == OFPRAW_OFPT11_PORT_MOD) { |
3106 | const struct ofp11_port_mod *opm = b.data; | |
9e1fd49b BP |
3107 | enum ofperr error; |
3108 | ||
9e1fd49b BP |
3109 | error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no); |
3110 | if (error) { | |
3111 | return error; | |
3112 | } | |
3113 | ||
3114 | memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN); | |
3115 | pm->config = ntohl(opm->config) & OFPPC11_ALL; | |
3116 | pm->mask = ntohl(opm->mask) & OFPPC11_ALL; | |
3117 | pm->advertise = netdev_port_features_from_ofp11(opm->advertise); | |
3118 | } else { | |
982697a4 | 3119 | return OFPERR_OFPBRC_BAD_TYPE; |
9e1fd49b BP |
3120 | } |
3121 | ||
3122 | pm->config &= pm->mask; | |
3123 | return 0; | |
3124 | } | |
3125 | ||
3126 | /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow | |
3127 | * message suitable for 'protocol', and returns that encoded form in a buffer | |
3128 | * owned by the caller. */ | |
3129 | struct ofpbuf * | |
3130 | ofputil_encode_port_mod(const struct ofputil_port_mod *pm, | |
3131 | enum ofputil_protocol protocol) | |
3132 | { | |
2e3fa633 | 3133 | enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol); |
9e1fd49b BP |
3134 | struct ofpbuf *b; |
3135 | ||
2e3fa633 SH |
3136 | switch (ofp_version) { |
3137 | case OFP10_VERSION: { | |
9e1fd49b BP |
3138 | struct ofp10_port_mod *opm; |
3139 | ||
982697a4 BP |
3140 | b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0); |
3141 | opm = ofpbuf_put_zeros(b, sizeof *opm); | |
9e1fd49b BP |
3142 | opm->port_no = htons(pm->port_no); |
3143 | memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN); | |
3144 | opm->config = htonl(pm->config & OFPPC10_ALL); | |
3145 | opm->mask = htonl(pm->mask & OFPPC10_ALL); | |
3146 | opm->advertise = netdev_port_features_to_ofp10(pm->advertise); | |
2e3fa633 SH |
3147 | break; |
3148 | } | |
3149 | ||
5fe7c919 SH |
3150 | case OFP11_VERSION: |
3151 | case OFP12_VERSION: { | |
9e1fd49b BP |
3152 | struct ofp11_port_mod *opm; |
3153 | ||
982697a4 BP |
3154 | b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0); |
3155 | opm = ofpbuf_put_zeros(b, sizeof *opm); | |
026a5179 | 3156 | opm->port_no = ofputil_port_to_ofp11(pm->port_no); |
9e1fd49b BP |
3157 | memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN); |
3158 | opm->config = htonl(pm->config & OFPPC11_ALL); | |
3159 | opm->mask = htonl(pm->mask & OFPPC11_ALL); | |
3160 | opm->advertise = netdev_port_features_to_ofp11(pm->advertise); | |
2e3fa633 SH |
3161 | break; |
3162 | } | |
3163 | ||
2e3fa633 | 3164 | default: |
9e1fd49b BP |
3165 | NOT_REACHED(); |
3166 | } | |
3167 | ||
3168 | return b; | |
3169 | } | |
2b07c8b1 | 3170 | \f |
307975da SH |
3171 | /* Table stats. */ |
3172 | ||
3173 | static void | |
3174 | ofputil_put_ofp10_table_stats(const struct ofp12_table_stats *in, | |
3175 | struct ofpbuf *buf) | |
3176 | { | |
3177 | struct wc_map { | |
3178 | enum ofp_flow_wildcards wc10; | |
3179 | enum oxm12_ofb_match_fields mf12; | |
3180 | }; | |
3181 | ||
3182 | static const struct wc_map wc_map[] = { | |
3183 | { OFPFW10_IN_PORT, OFPXMT12_OFB_IN_PORT }, | |
3184 | { OFPFW10_DL_VLAN, OFPXMT12_OFB_VLAN_VID }, | |
3185 | { OFPFW10_DL_SRC, OFPXMT12_OFB_ETH_SRC }, | |
3186 | { OFPFW10_DL_DST, OFPXMT12_OFB_ETH_DST}, | |
3187 | { OFPFW10_DL_TYPE, OFPXMT12_OFB_ETH_TYPE }, | |
3188 | { OFPFW10_NW_PROTO, OFPXMT12_OFB_IP_PROTO }, | |
3189 | { OFPFW10_TP_SRC, OFPXMT12_OFB_TCP_SRC }, | |
3190 | { OFPFW10_TP_DST, OFPXMT12_OFB_TCP_DST }, | |
3191 | { OFPFW10_NW_SRC_MASK, OFPXMT12_OFB_IPV4_SRC }, | |
3192 | { OFPFW10_NW_DST_MASK, OFPXMT12_OFB_IPV4_DST }, | |
3193 | { OFPFW10_DL_VLAN_PCP, OFPXMT12_OFB_VLAN_PCP }, | |
3194 | { OFPFW10_NW_TOS, OFPXMT12_OFB_IP_DSCP }, | |
3195 | }; | |
3196 | ||
3197 | struct ofp10_table_stats *out; | |
3198 | const struct wc_map *p; | |
3199 | ||
3200 | out = ofpbuf_put_uninit(buf, sizeof *out); | |
3201 | out->table_id = in->table_id; | |
3202 | strcpy(out->name, in->name); | |
3203 | out->wildcards = 0; | |
3204 | for (p = wc_map; p < &wc_map[ARRAY_SIZE(wc_map)]; p++) { | |
3205 | if (in->wildcards & htonll(1ULL << p->mf12)) { | |
3206 | out->wildcards |= htonl(p->wc10); | |
3207 | } | |
3208 | } | |
3209 | out->max_entries = in->max_entries; | |
3210 | out->active_count = in->active_count; | |
3211 | put_32aligned_be64(&out->lookup_count, in->lookup_count); | |
3212 | put_32aligned_be64(&out->matched_count, in->matched_count); | |
3213 | } | |
3214 | ||
3215 | static ovs_be32 | |
3216 | oxm12_to_ofp11_flow_match_fields(ovs_be64 oxm12) | |
3217 | { | |
3218 | struct map { | |
3219 | enum ofp11_flow_match_fields fmf11; | |
3220 | enum oxm12_ofb_match_fields mf12; | |
3221 | }; | |
3222 | ||
3223 | static const struct map map[] = { | |
3224 | { OFPFMF11_IN_PORT, OFPXMT12_OFB_IN_PORT }, | |
3225 | { OFPFMF11_DL_VLAN, OFPXMT12_OFB_VLAN_VID }, | |
3226 | { OFPFMF11_DL_VLAN_PCP, OFPXMT12_OFB_VLAN_PCP }, | |
3227 | { OFPFMF11_DL_TYPE, OFPXMT12_OFB_ETH_TYPE }, | |
3228 | { OFPFMF11_NW_TOS, OFPXMT12_OFB_IP_DSCP }, | |
3229 | { OFPFMF11_NW_PROTO, OFPXMT12_OFB_IP_PROTO }, | |
3230 | { OFPFMF11_TP_SRC, OFPXMT12_OFB_TCP_SRC }, | |
3231 | { OFPFMF11_TP_DST, OFPXMT12_OFB_TCP_DST }, | |
3232 | { OFPFMF11_MPLS_LABEL, OFPXMT12_OFB_MPLS_LABEL }, | |
3233 | { OFPFMF11_MPLS_TC, OFPXMT12_OFB_MPLS_TC }, | |
3234 | /* I don't know what OFPFMF11_TYPE means. */ | |
3235 | { OFPFMF11_DL_SRC, OFPXMT12_OFB_ETH_SRC }, | |
3236 | { OFPFMF11_DL_DST, OFPXMT12_OFB_ETH_DST }, | |
3237 | { OFPFMF11_NW_SRC, OFPXMT12_OFB_IPV4_SRC }, | |
3238 | { OFPFMF11_NW_DST, OFPXMT12_OFB_IPV4_DST }, | |
3239 | { OFPFMF11_METADATA, OFPXMT12_OFB_METADATA }, | |
3240 | }; | |
3241 | ||
3242 | const struct map *p; | |
3243 | uint32_t fmf11; | |
3244 | ||
3245 | fmf11 = 0; | |
3246 | for (p = map; p < &map[ARRAY_SIZE(map)]; p++) { | |
3247 | if (oxm12 & htonll(1ULL << p->mf12)) { | |
3248 | fmf11 |= p->fmf11; | |
3249 | } | |
3250 | } | |
3251 | return htonl(fmf11); | |
3252 | } | |
3253 | ||
3254 | static void | |
3255 | ofputil_put_ofp11_table_stats(const struct ofp12_table_stats *in, | |
3256 | struct ofpbuf *buf) | |
3257 | { | |
3258 | struct ofp11_table_stats *out; | |
3259 | ||
3260 | out = ofpbuf_put_uninit(buf, sizeof *out); | |
3261 | out->table_id = in->table_id; | |
3262 | strcpy(out->name, in->name); | |
3263 | out->wildcards = oxm12_to_ofp11_flow_match_fields(in->wildcards); | |
3264 | out->match = oxm12_to_ofp11_flow_match_fields(in->match); | |
3265 | out->instructions = in->instructions; | |
3266 | out->write_actions = in->write_actions; | |
3267 | out->apply_actions = in->apply_actions; | |
3268 | out->config = in->config; | |
3269 | out->max_entries = in->max_entries; | |
3270 | out->active_count = in->active_count; | |
3271 | out->lookup_count = in->lookup_count; | |
3272 | out->matched_count = in->matched_count; | |
3273 | } | |
3274 | ||
3275 | struct ofpbuf * | |
3276 | ofputil_encode_table_stats_reply(const struct ofp12_table_stats stats[], int n, | |
3277 | const struct ofp_header *request) | |
3278 | { | |
3279 | struct ofpbuf *reply; | |
3280 | int i; | |
3281 | ||
3282 | reply = ofpraw_alloc_stats_reply(request, n * sizeof *stats); | |
3283 | ||
3284 | switch ((enum ofp_version) request->version) { | |
3285 | case OFP10_VERSION: | |
3286 | for (i = 0; i < n; i++) { | |
3287 | ofputil_put_ofp10_table_stats(&stats[i], reply); | |
3288 | } | |
3289 | break; | |
3290 | ||
3291 | case OFP11_VERSION: | |
3292 | for (i = 0; i < n; i++) { | |
3293 | ofputil_put_ofp11_table_stats(&stats[i], reply); | |
3294 | } | |
3295 | break; | |
3296 | ||
3297 | case OFP12_VERSION: | |
3298 | ofpbuf_put(reply, stats, n * sizeof *stats); | |
3299 | break; | |
3300 | ||
3301 | default: | |
3302 | NOT_REACHED(); | |
3303 | } | |
3304 | ||
3305 | return reply; | |
3306 | } | |
3307 | \f | |
2b07c8b1 BP |
3308 | /* ofputil_flow_monitor_request */ |
3309 | ||
3310 | /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract | |
3311 | * ofputil_flow_monitor_request in 'rq'. | |
3312 | * | |
3313 | * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow | |
3314 | * message. Calling this function multiple times for a single 'msg' iterates | |
3315 | * through the requests. The caller must initially leave 'msg''s layer | |
3316 | * pointers null and not modify them between calls. | |
3317 | * | |
3318 | * Returns 0 if successful, EOF if no requests were left in this 'msg', | |
3319 | * otherwise an OFPERR_* value. */ | |
3320 | int | |
3321 | ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq, | |
3322 | struct ofpbuf *msg) | |
3323 | { | |
3324 | struct nx_flow_monitor_request *nfmr; | |
3325 | uint16_t flags; | |
3326 | ||
3327 | if (!msg->l2) { | |
3328 | msg->l2 = msg->data; | |
982697a4 | 3329 | ofpraw_pull_assert(msg); |
2b07c8b1 BP |
3330 | } |
3331 | ||
3332 | if (!msg->size) { | |
3333 | return EOF; | |
3334 | } | |
3335 | ||
3336 | nfmr = ofpbuf_try_pull(msg, sizeof *nfmr); | |
3337 | if (!nfmr) { | |
3338 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %zu " | |
3339 | "leftover bytes at end", msg->size); | |
3340 | return OFPERR_OFPBRC_BAD_LEN; | |
3341 | } | |
3342 | ||
3343 | flags = ntohs(nfmr->flags); | |
3344 | if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY)) | |
3345 | || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE | |
3346 | | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) { | |
3347 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16, | |
3348 | flags); | |
3349 | return OFPERR_NXBRC_FM_BAD_FLAGS; | |
3350 | } | |
3351 | ||
3352 | if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) { | |
3353 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
3354 | } | |
3355 | ||
3356 | rq->id = ntohl(nfmr->id); | |
3357 | rq->flags = flags; | |
3358 | rq->out_port = ntohs(nfmr->out_port); | |
3359 | rq->table_id = nfmr->table_id; | |
3360 | ||
81a76618 | 3361 | return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL); |
2b07c8b1 BP |
3362 | } |
3363 | ||
3364 | void | |
3365 | ofputil_append_flow_monitor_request( | |
3366 | const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg) | |
3367 | { | |
3368 | struct nx_flow_monitor_request *nfmr; | |
3369 | size_t start_ofs; | |
3370 | int match_len; | |
3371 | ||
3372 | if (!msg->size) { | |
982697a4 | 3373 | ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg); |
2b07c8b1 BP |
3374 | } |
3375 | ||
3376 | start_ofs = msg->size; | |
3377 | ofpbuf_put_zeros(msg, sizeof *nfmr); | |
7623f4dd | 3378 | match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0)); |
2b07c8b1 BP |
3379 | |
3380 | nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr); | |
3381 | nfmr->id = htonl(rq->id); | |
3382 | nfmr->flags = htons(rq->flags); | |
3383 | nfmr->out_port = htons(rq->out_port); | |
3384 | nfmr->match_len = htons(match_len); | |
3385 | nfmr->table_id = rq->table_id; | |
3386 | } | |
3387 | ||
3388 | /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg' | |
3389 | * into an abstract ofputil_flow_update in 'update'. The caller must have | |
81a76618 | 3390 | * initialized update->match to point to space allocated for a match. |
2b07c8b1 BP |
3391 | * |
3392 | * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's | |
3393 | * actions (except for NXFME_ABBREV, which never includes actions). The caller | |
3394 | * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts' | |
3395 | * will point into the 'ofpacts' buffer. | |
3396 | * | |
3397 | * Multiple flow updates can be packed into a single OpenFlow message. Calling | |
3398 | * this function multiple times for a single 'msg' iterates through the | |
3399 | * updates. The caller must initially leave 'msg''s layer pointers null and | |
3400 | * not modify them between calls. | |
3401 | * | |
3402 | * Returns 0 if successful, EOF if no updates were left in this 'msg', | |
3403 | * otherwise an OFPERR_* value. */ | |
3404 | int | |
3405 | ofputil_decode_flow_update(struct ofputil_flow_update *update, | |
3406 | struct ofpbuf *msg, struct ofpbuf *ofpacts) | |
3407 | { | |
3408 | struct nx_flow_update_header *nfuh; | |
3409 | unsigned int length; | |
3410 | ||
3411 | if (!msg->l2) { | |
3412 | msg->l2 = msg->data; | |
982697a4 | 3413 | ofpraw_pull_assert(msg); |
2b07c8b1 BP |
3414 | } |
3415 | ||
3416 | if (!msg->size) { | |
3417 | return EOF; | |
3418 | } | |
3419 | ||
3420 | if (msg->size < sizeof(struct nx_flow_update_header)) { | |
3421 | goto bad_len; | |
3422 | } | |
3423 | ||
3424 | nfuh = msg->data; | |
3425 | update->event = ntohs(nfuh->event); | |
3426 | length = ntohs(nfuh->length); | |
3427 | if (length > msg->size || length % 8) { | |
3428 | goto bad_len; | |
3429 | } | |
3430 | ||
3431 | if (update->event == NXFME_ABBREV) { | |
3432 | struct nx_flow_update_abbrev *nfua; | |
3433 | ||
3434 | if (length != sizeof *nfua) { | |
3435 | goto bad_len; | |
3436 | } | |
3437 | ||
3438 | nfua = ofpbuf_pull(msg, sizeof *nfua); | |
3439 | update->xid = nfua->xid; | |
3440 | return 0; | |
3441 | } else if (update->event == NXFME_ADDED | |
3442 | || update->event == NXFME_DELETED | |
3443 | || update->event == NXFME_MODIFIED) { | |
3444 | struct nx_flow_update_full *nfuf; | |
3445 | unsigned int actions_len; | |
3446 | unsigned int match_len; | |
3447 | enum ofperr error; | |
3448 | ||
3449 | if (length < sizeof *nfuf) { | |
3450 | goto bad_len; | |
3451 | } | |
3452 | ||
3453 | nfuf = ofpbuf_pull(msg, sizeof *nfuf); | |
3454 | match_len = ntohs(nfuf->match_len); | |
3455 | if (sizeof *nfuf + match_len > length) { | |
3456 | goto bad_len; | |
3457 | } | |
3458 | ||
3459 | update->reason = ntohs(nfuf->reason); | |
3460 | update->idle_timeout = ntohs(nfuf->idle_timeout); | |
3461 | update->hard_timeout = ntohs(nfuf->hard_timeout); | |
3462 | update->table_id = nfuf->table_id; | |
3463 | update->cookie = nfuf->cookie; | |
81a76618 | 3464 | update->priority = ntohs(nfuf->priority); |
2b07c8b1 | 3465 | |
81a76618 | 3466 | error = nx_pull_match(msg, match_len, update->match, NULL, NULL); |
2b07c8b1 BP |
3467 | if (error) { |
3468 | return error; | |
3469 | } | |
3470 | ||
3471 | actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8); | |
3472 | error = ofpacts_pull_openflow10(msg, actions_len, ofpacts); | |
3473 | if (error) { | |
3474 | return error; | |
3475 | } | |
3476 | ||
3477 | update->ofpacts = ofpacts->data; | |
3478 | update->ofpacts_len = ofpacts->size; | |
3479 | return 0; | |
3480 | } else { | |
3481 | VLOG_WARN_RL(&bad_ofmsg_rl, | |
3482 | "NXST_FLOW_MONITOR reply has bad event %"PRIu16, | |
3483 | ntohs(nfuh->event)); | |
3484 | return OFPERR_OFPET_BAD_REQUEST; | |
3485 | } | |
3486 | ||
3487 | bad_len: | |
3488 | VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %zu " | |
3489 | "leftover bytes at end", msg->size); | |
3490 | return OFPERR_OFPBRC_BAD_LEN; | |
3491 | } | |
3492 | ||
3493 | uint32_t | |
3494 | ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh) | |
3495 | { | |
982697a4 BP |
3496 | const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh); |
3497 | ||
3498 | return ntohl(cancel->id); | |
2b07c8b1 | 3499 | } |
9e1fd49b | 3500 | |
2b07c8b1 BP |
3501 | struct ofpbuf * |
3502 | ofputil_encode_flow_monitor_cancel(uint32_t id) | |
3503 | { | |
3504 | struct nx_flow_monitor_cancel *nfmc; | |
3505 | struct ofpbuf *msg; | |
3506 | ||
982697a4 BP |
3507 | msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0); |
3508 | nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc); | |
2b07c8b1 BP |
3509 | nfmc->id = htonl(id); |
3510 | return msg; | |
3511 | } | |
3512 | ||
3513 | void | |
3514 | ofputil_start_flow_update(struct list *replies) | |
3515 | { | |
3516 | struct ofpbuf *msg; | |
3517 | ||
982697a4 BP |
3518 | msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION, |
3519 | htonl(0), 1024); | |
2b07c8b1 BP |
3520 | |
3521 | list_init(replies); | |
3522 | list_push_back(replies, &msg->list_node); | |
3523 | } | |
3524 | ||
3525 | void | |
3526 | ofputil_append_flow_update(const struct ofputil_flow_update *update, | |
3527 | struct list *replies) | |
3528 | { | |
3529 | struct nx_flow_update_header *nfuh; | |
3530 | struct ofpbuf *msg; | |
3531 | size_t start_ofs; | |
3532 | ||
3533 | msg = ofpbuf_from_list(list_back(replies)); | |
3534 | start_ofs = msg->size; | |
3535 | ||
3536 | if (update->event == NXFME_ABBREV) { | |
3537 | struct nx_flow_update_abbrev *nfua; | |
3538 | ||
3539 | nfua = ofpbuf_put_zeros(msg, sizeof *nfua); | |
3540 | nfua->xid = update->xid; | |
3541 | } else { | |
3542 | struct nx_flow_update_full *nfuf; | |
3543 | int match_len; | |
3544 | ||
3545 | ofpbuf_put_zeros(msg, sizeof *nfuf); | |
7623f4dd | 3546 | match_len = nx_put_match(msg, update->match, htonll(0), htonll(0)); |
2b07c8b1 BP |
3547 | ofpacts_put_openflow10(update->ofpacts, update->ofpacts_len, msg); |
3548 | ||
3549 | nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf); | |
3550 | nfuf->reason = htons(update->reason); | |
81a76618 | 3551 | nfuf->priority = htons(update->priority); |
2b07c8b1 BP |
3552 | nfuf->idle_timeout = htons(update->idle_timeout); |
3553 | nfuf->hard_timeout = htons(update->hard_timeout); | |
3554 | nfuf->match_len = htons(match_len); | |
3555 | nfuf->table_id = update->table_id; | |
3556 | nfuf->cookie = update->cookie; | |
3557 | } | |
3558 | ||
3559 | nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh); | |
3560 | nfuh->length = htons(msg->size - start_ofs); | |
3561 | nfuh->event = htons(update->event); | |
3562 | ||
982697a4 | 3563 | ofpmp_postappend(replies, start_ofs); |
2b07c8b1 BP |
3564 | } |
3565 | \f | |
c6a93eb7 | 3566 | struct ofpbuf * |
de0f3156 SH |
3567 | ofputil_encode_packet_out(const struct ofputil_packet_out *po, |
3568 | enum ofputil_protocol protocol) | |
c6a93eb7 | 3569 | { |
de0f3156 | 3570 | enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol); |
c6a93eb7 BP |
3571 | struct ofpbuf *msg; |
3572 | size_t size; | |
3573 | ||
982697a4 | 3574 | size = po->ofpacts_len; |
c6a93eb7 BP |
3575 | if (po->buffer_id == UINT32_MAX) { |
3576 | size += po->packet_len; | |
3577 | } | |
3578 | ||
de0f3156 SH |
3579 | switch (ofp_version) { |
3580 | case OFP10_VERSION: { | |
3581 | struct ofp_packet_out *opo; | |
3582 | size_t actions_ofs; | |
3583 | ||
3584 | msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size); | |
3585 | ofpbuf_put_zeros(msg, sizeof *opo); | |
3586 | actions_ofs = msg->size; | |
3587 | ofpacts_put_openflow10(po->ofpacts, po->ofpacts_len, msg); | |
3588 | ||
3589 | opo = msg->l3; | |
3590 | opo->buffer_id = htonl(po->buffer_id); | |
3591 | opo->in_port = htons(po->in_port); | |
3592 | opo->actions_len = htons(msg->size - actions_ofs); | |
3593 | break; | |
3594 | } | |
f25d0cf3 | 3595 | |
de0f3156 | 3596 | case OFP11_VERSION: |
7c1b1a0d SH |
3597 | case OFP12_VERSION: { |
3598 | struct ofp11_packet_out *opo; | |
3599 | size_t len; | |
3600 | ||
3601 | msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size); | |
3602 | ofpbuf_put_zeros(msg, sizeof *opo); | |
3603 | len = ofpacts_put_openflow11_actions(po->ofpacts, po->ofpacts_len, msg); | |
3604 | ||
3605 | opo = msg->l3; | |
3606 | opo->buffer_id = htonl(po->buffer_id); | |
3607 | opo->in_port = ofputil_port_to_ofp11(po->in_port); | |
3608 | opo->actions_len = htons(len); | |
3609 | break; | |
3610 | } | |
3611 | ||
de0f3156 SH |
3612 | default: |
3613 | NOT_REACHED(); | |
3614 | } | |
f25d0cf3 | 3615 | |
c6a93eb7 BP |
3616 | if (po->buffer_id == UINT32_MAX) { |
3617 | ofpbuf_put(msg, po->packet, po->packet_len); | |
3618 | } | |
f25d0cf3 | 3619 | |
982697a4 | 3620 | ofpmsg_update_length(msg); |
c6a93eb7 BP |
3621 | |
3622 | return msg; | |
3623 | } | |
d1e2cf21 | 3624 | \f |
fa37b408 BP |
3625 | /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */ |
3626 | struct ofpbuf * | |
1a126c0c | 3627 | make_echo_request(enum ofp_version ofp_version) |
fa37b408 | 3628 | { |
1a126c0c | 3629 | return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version, |
982697a4 | 3630 | htonl(0), 0); |
fa37b408 BP |
3631 | } |
3632 | ||
3633 | /* Creates and returns an OFPT_ECHO_REPLY message matching the | |
3634 | * OFPT_ECHO_REQUEST message in 'rq'. */ | |
3635 | struct ofpbuf * | |
3636 | make_echo_reply(const struct ofp_header *rq) | |
3637 | { | |
982697a4 BP |
3638 | struct ofpbuf rq_buf; |
3639 | struct ofpbuf *reply; | |
3640 | ||
3641 | ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length)); | |
3642 | ofpraw_pull_assert(&rq_buf); | |
3643 | ||
3644 | reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, rq_buf.size); | |
3645 | ofpbuf_put(reply, rq_buf.data, rq_buf.size); | |
3646 | return reply; | |
fa37b408 BP |
3647 | } |
3648 | ||
efb80167 | 3649 | struct ofpbuf * |
a0ae0b6e | 3650 | ofputil_encode_barrier_request(enum ofp_version ofp_version) |
efb80167 | 3651 | { |
a0ae0b6e SH |
3652 | enum ofpraw type; |
3653 | ||
3654 | switch (ofp_version) { | |
3655 | case OFP12_VERSION: | |
3656 | case OFP11_VERSION: | |
3657 | type = OFPRAW_OFPT11_BARRIER_REQUEST; | |
3658 | break; | |
3659 | ||
3660 | case OFP10_VERSION: | |
3661 | type = OFPRAW_OFPT10_BARRIER_REQUEST; | |
3662 | break; | |
3663 | ||
3664 | default: | |
3665 | NOT_REACHED(); | |
3666 | } | |
3667 | ||
3668 | return ofpraw_alloc(type, ofp_version, 0); | |
efb80167 BP |
3669 | } |
3670 | ||
7257b535 BP |
3671 | const char * |
3672 | ofputil_frag_handling_to_string(enum ofp_config_flags flags) | |
3673 | { | |
3674 | switch (flags & OFPC_FRAG_MASK) { | |
3675 | case OFPC_FRAG_NORMAL: return "normal"; | |
3676 | case OFPC_FRAG_DROP: return "drop"; | |
3677 | case OFPC_FRAG_REASM: return "reassemble"; | |
3678 | case OFPC_FRAG_NX_MATCH: return "nx-match"; | |
3679 | } | |
3680 | ||
3681 | NOT_REACHED(); | |
3682 | } | |
3683 | ||
3684 | bool | |
3685 | ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags) | |
3686 | { | |
3687 | if (!strcasecmp(s, "normal")) { | |
3688 | *flags = OFPC_FRAG_NORMAL; | |
3689 | } else if (!strcasecmp(s, "drop")) { | |
3690 | *flags = OFPC_FRAG_DROP; | |
3691 | } else if (!strcasecmp(s, "reassemble")) { | |
3692 | *flags = OFPC_FRAG_REASM; | |
3693 | } else if (!strcasecmp(s, "nx-match")) { | |
3694 | *flags = OFPC_FRAG_NX_MATCH; | |
3695 | } else { | |
3696 | return false; | |
3697 | } | |
3698 | return true; | |
3699 | } | |
3700 | ||
7b7503ea BP |
3701 | /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0 |
3702 | * port number and stores the latter in '*ofp10_port', for the purpose of | |
3703 | * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful, | |
3704 | * otherwise an OFPERR_* number. | |
3705 | * | |
3706 | * See the definition of OFP11_MAX for an explanation of the mapping. */ | |
3707 | enum ofperr | |
3708 | ofputil_port_from_ofp11(ovs_be32 ofp11_port, uint16_t *ofp10_port) | |
3709 | { | |
3710 | uint32_t ofp11_port_h = ntohl(ofp11_port); | |
3711 | ||
3712 | if (ofp11_port_h < OFPP_MAX) { | |
3713 | *ofp10_port = ofp11_port_h; | |
3714 | return 0; | |
3715 | } else if (ofp11_port_h >= OFPP11_MAX) { | |
3716 | *ofp10_port = ofp11_port_h - OFPP11_OFFSET; | |
3717 | return 0; | |
3718 | } else { | |
3719 | VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported " | |
3720 | "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32, | |
3721 | ofp11_port_h, OFPP_MAX - 1, | |
3722 | (uint32_t) OFPP11_MAX, UINT32_MAX); | |
3723 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
3724 | } | |
3725 | } | |
3726 | ||
3727 | /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port | |
3728 | * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages. | |
3729 | * | |
3730 | * See the definition of OFP11_MAX for an explanation of the mapping. */ | |
3731 | ovs_be32 | |
3732 | ofputil_port_to_ofp11(uint16_t ofp10_port) | |
3733 | { | |
3734 | return htonl(ofp10_port < OFPP_MAX | |
3735 | ? ofp10_port | |
3736 | : ofp10_port + OFPP11_OFFSET); | |
3737 | } | |
3738 | ||
08f94c0e | 3739 | /* Checks that 'port' is a valid output port for the OFPAT10_OUTPUT action, given |
c1c9c9c4 | 3740 | * that the switch will never have more than 'max_ports' ports. Returns 0 if |
90bf1e07 BP |
3741 | * 'port' is valid, otherwise an OpenFlow return code. */ |
3742 | enum ofperr | |
77410139 | 3743 | ofputil_check_output_port(uint16_t port, int max_ports) |
fa37b408 BP |
3744 | { |
3745 | switch (port) { | |
3746 | case OFPP_IN_PORT: | |
3747 | case OFPP_TABLE: | |
3748 | case OFPP_NORMAL: | |
3749 | case OFPP_FLOOD: | |
3750 | case OFPP_ALL: | |
3751 | case OFPP_CONTROLLER: | |
0d193212 | 3752 | case OFPP_NONE: |
fa37b408 BP |
3753 | case OFPP_LOCAL: |
3754 | return 0; | |
3755 | ||
3756 | default: | |
c1c9c9c4 | 3757 | if (port < max_ports) { |
fa37b408 BP |
3758 | return 0; |
3759 | } | |
90bf1e07 | 3760 | return OFPERR_OFPBAC_BAD_OUT_PORT; |
fa37b408 BP |
3761 | } |
3762 | } | |
3763 | ||
39dc9082 BP |
3764 | #define OFPUTIL_NAMED_PORTS \ |
3765 | OFPUTIL_NAMED_PORT(IN_PORT) \ | |
3766 | OFPUTIL_NAMED_PORT(TABLE) \ | |
3767 | OFPUTIL_NAMED_PORT(NORMAL) \ | |
3768 | OFPUTIL_NAMED_PORT(FLOOD) \ | |
3769 | OFPUTIL_NAMED_PORT(ALL) \ | |
3770 | OFPUTIL_NAMED_PORT(CONTROLLER) \ | |
3771 | OFPUTIL_NAMED_PORT(LOCAL) \ | |
3772 | OFPUTIL_NAMED_PORT(NONE) | |
3773 | ||
8010100b BP |
3774 | /* Stores the port number represented by 's' into '*portp'. 's' may be an |
3775 | * integer or, for reserved ports, the standard OpenFlow name for the port | |
3776 | * (e.g. "LOCAL"). | |
c6100d92 | 3777 | * |
8010100b BP |
3778 | * Returns true if successful, false if 's' is not a valid OpenFlow port number |
3779 | * or name. The caller should issue an error message in this case, because | |
3780 | * this function usually does not. (This gives the caller an opportunity to | |
3781 | * look up the port name another way, e.g. by contacting the switch and listing | |
3782 | * the names of all its ports). | |
c6100d92 BP |
3783 | * |
3784 | * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset | |
3785 | * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit | |
3786 | * range as described in include/openflow/openflow-1.1.h. */ | |
8010100b BP |
3787 | bool |
3788 | ofputil_port_from_string(const char *s, uint16_t *portp) | |
39dc9082 | 3789 | { |
c6100d92 BP |
3790 | unsigned int port32; |
3791 | ||
8010100b | 3792 | *portp = 0; |
c6100d92 | 3793 | if (str_to_uint(s, 10, &port32)) { |
e3432ee9 | 3794 | if (port32 < OFPP_MAX) { |
8010100b BP |
3795 | *portp = port32; |
3796 | return true; | |
c6100d92 BP |
3797 | } else if (port32 < OFPP_FIRST_RESV) { |
3798 | VLOG_WARN("port %u is a reserved OF1.0 port number that will " | |
3799 | "be translated to %u when talking to an OF1.1 or " | |
3800 | "later controller", port32, port32 + OFPP11_OFFSET); | |
8010100b BP |
3801 | *portp = port32; |
3802 | return true; | |
c6100d92 BP |
3803 | } else if (port32 <= OFPP_LAST_RESV) { |
3804 | struct ds s; | |
3805 | ||
3806 | ds_init(&s); | |
3807 | ofputil_format_port(port32, &s); | |
fd38af85 BP |
3808 | VLOG_WARN_ONCE("referring to port %s as %u is deprecated for " |
3809 | "compatibility with future versions of OpenFlow", | |
3810 | ds_cstr(&s), port32); | |
c6100d92 BP |
3811 | ds_destroy(&s); |
3812 | ||
8010100b BP |
3813 | *portp = port32; |
3814 | return true; | |
c6100d92 BP |
3815 | } else if (port32 < OFPP11_MAX) { |
3816 | VLOG_WARN("port %u is outside the supported range 0 through " | |
3817 | "%"PRIx16"or 0x%x through 0x%"PRIx32, port32, | |
3818 | UINT16_MAX, (unsigned int) OFPP11_MAX, UINT32_MAX); | |
8010100b | 3819 | return false; |
c6100d92 | 3820 | } else { |
8010100b BP |
3821 | *portp = port32 - OFPP11_OFFSET; |
3822 | return true; | |
c6100d92 BP |
3823 | } |
3824 | } else { | |
3825 | struct pair { | |
3826 | const char *name; | |
3827 | uint16_t value; | |
3828 | }; | |
3829 | static const struct pair pairs[] = { | |
39dc9082 | 3830 | #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME}, |
c6100d92 | 3831 | OFPUTIL_NAMED_PORTS |
39dc9082 | 3832 | #undef OFPUTIL_NAMED_PORT |
c6100d92 BP |
3833 | }; |
3834 | const struct pair *p; | |
39dc9082 | 3835 | |
c6100d92 BP |
3836 | for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) { |
3837 | if (!strcasecmp(s, p->name)) { | |
8010100b BP |
3838 | *portp = p->value; |
3839 | return true; | |
c6100d92 | 3840 | } |
39dc9082 | 3841 | } |
8010100b | 3842 | return false; |
39dc9082 | 3843 | } |
39dc9082 BP |
3844 | } |
3845 | ||
3846 | /* Appends to 's' a string representation of the OpenFlow port number 'port'. | |
3847 | * Most ports' string representation is just the port number, but for special | |
3848 | * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */ | |
3849 | void | |
3850 | ofputil_format_port(uint16_t port, struct ds *s) | |
3851 | { | |
3852 | const char *name; | |
3853 | ||
3854 | switch (port) { | |
3855 | #define OFPUTIL_NAMED_PORT(NAME) case OFPP_##NAME: name = #NAME; break; | |
3856 | OFPUTIL_NAMED_PORTS | |
3857 | #undef OFPUTIL_NAMED_PORT | |
3858 | ||
3859 | default: | |
3860 | ds_put_format(s, "%"PRIu16, port); | |
3861 | return; | |
3862 | } | |
3863 | ds_put_cstr(s, name); | |
3864 | } | |
3865 | ||
2be393ed JP |
3866 | /* Given a buffer 'b' that contains an array of OpenFlow ports of type |
3867 | * 'ofp_version', tries to pull the first element from the array. If | |
3868 | * successful, initializes '*pp' with an abstract representation of the | |
3869 | * port and returns 0. If no ports remain to be decoded, returns EOF. | |
3870 | * On an error, returns a positive OFPERR_* value. */ | |
3871 | int | |
2e3fa633 | 3872 | ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b, |
2be393ed JP |
3873 | struct ofputil_phy_port *pp) |
3874 | { | |
2e3fa633 SH |
3875 | switch (ofp_version) { |
3876 | case OFP10_VERSION: { | |
2be393ed JP |
3877 | const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp); |
3878 | return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF; | |
2e3fa633 SH |
3879 | } |
3880 | case OFP11_VERSION: | |
3881 | case OFP12_VERSION: { | |
2be393ed JP |
3882 | const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op); |
3883 | return op ? ofputil_decode_ofp11_port(pp, op) : EOF; | |
3884 | } | |
2e3fa633 SH |
3885 | default: |
3886 | NOT_REACHED(); | |
3887 | } | |
2be393ed JP |
3888 | } |
3889 | ||
3890 | /* Given a buffer 'b' that contains an array of OpenFlow ports of type | |
3891 | * 'ofp_version', returns the number of elements. */ | |
3892 | size_t ofputil_count_phy_ports(uint8_t ofp_version, struct ofpbuf *b) | |
3893 | { | |
5b5a3a67 | 3894 | return b->size / ofputil_get_phy_port_size(ofp_version); |
2be393ed JP |
3895 | } |
3896 | ||
e23ae585 | 3897 | /* Returns the 'enum ofputil_action_code' corresponding to 'name' (e.g. if |
08f94c0e | 3898 | * 'name' is "output" then the return value is OFPUTIL_OFPAT10_OUTPUT), or -1 if |
e23ae585 BP |
3899 | * 'name' is not the name of any action. |
3900 | * | |
3901 | * ofp-util.def lists the mapping from names to action. */ | |
3902 | int | |
3903 | ofputil_action_code_from_name(const char *name) | |
3904 | { | |
3905 | static const char *names[OFPUTIL_N_ACTIONS] = { | |
690a61c5 | 3906 | NULL, |
3ddcaf2d BP |
3907 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) NAME, |
3908 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME, | |
3909 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME, | |
e23ae585 BP |
3910 | #include "ofp-util.def" |
3911 | }; | |
3912 | ||
3913 | const char **p; | |
3914 | ||
3915 | for (p = names; p < &names[ARRAY_SIZE(names)]; p++) { | |
3916 | if (*p && !strcasecmp(name, *p)) { | |
3917 | return p - names; | |
3918 | } | |
3919 | } | |
3920 | return -1; | |
3921 | } | |
3922 | ||
93996add BP |
3923 | /* Appends an action of the type specified by 'code' to 'buf' and returns the |
3924 | * action. Initializes the parts of 'action' that identify it as having type | |
3925 | * <ENUM> and length 'sizeof *action' and zeros the rest. For actions that | |
3926 | * have variable length, the length used and cleared is that of struct | |
3927 | * <STRUCT>. */ | |
3928 | void * | |
3929 | ofputil_put_action(enum ofputil_action_code code, struct ofpbuf *buf) | |
3930 | { | |
3931 | switch (code) { | |
690a61c5 BP |
3932 | case OFPUTIL_ACTION_INVALID: |
3933 | NOT_REACHED(); | |
3934 | ||
3ddcaf2d BP |
3935 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \ |
3936 | case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf); | |
3937 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
93996add BP |
3938 | case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf); |
3939 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
3940 | case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf); | |
3941 | #include "ofp-util.def" | |
3942 | } | |
3943 | NOT_REACHED(); | |
3944 | } | |
3945 | ||
08f94c0e | 3946 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \ |
93996add BP |
3947 | void \ |
3948 | ofputil_init_##ENUM(struct STRUCT *s) \ | |
3949 | { \ | |
3950 | memset(s, 0, sizeof *s); \ | |
3951 | s->type = htons(ENUM); \ | |
3952 | s->len = htons(sizeof *s); \ | |
3953 | } \ | |
3954 | \ | |
3955 | struct STRUCT * \ | |
3956 | ofputil_put_##ENUM(struct ofpbuf *buf) \ | |
3957 | { \ | |
3958 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
3959 | ofputil_init_##ENUM(s); \ | |
3960 | return s; \ | |
3961 | } | |
3ddcaf2d BP |
3962 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
3963 | OFPAT10_ACTION(ENUM, STRUCT, NAME) | |
93996add BP |
3964 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
3965 | void \ | |
3966 | ofputil_init_##ENUM(struct STRUCT *s) \ | |
3967 | { \ | |
3968 | memset(s, 0, sizeof *s); \ | |
08f94c0e | 3969 | s->type = htons(OFPAT10_VENDOR); \ |
93996add BP |
3970 | s->len = htons(sizeof *s); \ |
3971 | s->vendor = htonl(NX_VENDOR_ID); \ | |
3972 | s->subtype = htons(ENUM); \ | |
3973 | } \ | |
3974 | \ | |
3975 | struct STRUCT * \ | |
3976 | ofputil_put_##ENUM(struct ofpbuf *buf) \ | |
3977 | { \ | |
3978 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
3979 | ofputil_init_##ENUM(s); \ | |
3980 | return s; \ | |
3981 | } | |
3982 | #include "ofp-util.def" | |
3983 | ||
3cbd9931 | 3984 | static void |
81a76618 | 3985 | ofputil_normalize_match__(struct match *match, bool may_log) |
b459a924 BP |
3986 | { |
3987 | enum { | |
3988 | MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */ | |
3989 | MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */ | |
3990 | MAY_NW_PROTO = 1 << 2, /* nw_proto */ | |
a61680c6 | 3991 | MAY_IPVx = 1 << 3, /* tos, frag, ttl */ |
b459a924 BP |
3992 | MAY_ARP_SHA = 1 << 4, /* arp_sha */ |
3993 | MAY_ARP_THA = 1 << 5, /* arp_tha */ | |
d78477ec | 3994 | MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */ |
b459a924 BP |
3995 | MAY_ND_TARGET = 1 << 7 /* nd_target */ |
3996 | } may_match; | |
3997 | ||
3998 | struct flow_wildcards wc; | |
3999 | ||
4000 | /* Figure out what fields may be matched. */ | |
81a76618 | 4001 | if (match->flow.dl_type == htons(ETH_TYPE_IP)) { |
9e44d715 | 4002 | may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR; |
81a76618 BP |
4003 | if (match->flow.nw_proto == IPPROTO_TCP || |
4004 | match->flow.nw_proto == IPPROTO_UDP || | |
4005 | match->flow.nw_proto == IPPROTO_ICMP) { | |
b459a924 BP |
4006 | may_match |= MAY_TP_ADDR; |
4007 | } | |
81a76618 | 4008 | } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) { |
d78477ec | 4009 | may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6; |
81a76618 BP |
4010 | if (match->flow.nw_proto == IPPROTO_TCP || |
4011 | match->flow.nw_proto == IPPROTO_UDP) { | |
b459a924 | 4012 | may_match |= MAY_TP_ADDR; |
81a76618 | 4013 | } else if (match->flow.nw_proto == IPPROTO_ICMPV6) { |
b459a924 | 4014 | may_match |= MAY_TP_ADDR; |
81a76618 | 4015 | if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) { |
b459a924 | 4016 | may_match |= MAY_ND_TARGET | MAY_ARP_SHA; |
81a76618 | 4017 | } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) { |
b459a924 BP |
4018 | may_match |= MAY_ND_TARGET | MAY_ARP_THA; |
4019 | } | |
4020 | } | |
8087f5ff MM |
4021 | } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) || |
4022 | match->flow.dl_type == htons(ETH_TYPE_RARP)) { | |
27527aa0 | 4023 | may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA; |
1c0b7503 | 4024 | } else { |
b459a924 BP |
4025 | may_match = 0; |
4026 | } | |
4027 | ||
4028 | /* Clear the fields that may not be matched. */ | |
81a76618 | 4029 | wc = match->wc; |
b459a924 | 4030 | if (!(may_match & MAY_NW_ADDR)) { |
26720e24 | 4031 | wc.masks.nw_src = wc.masks.nw_dst = htonl(0); |
b459a924 BP |
4032 | } |
4033 | if (!(may_match & MAY_TP_ADDR)) { | |
26720e24 | 4034 | wc.masks.tp_src = wc.masks.tp_dst = htons(0); |
b459a924 BP |
4035 | } |
4036 | if (!(may_match & MAY_NW_PROTO)) { | |
26720e24 | 4037 | wc.masks.nw_proto = 0; |
b459a924 | 4038 | } |
9e44d715 | 4039 | if (!(may_match & MAY_IPVx)) { |
26720e24 BP |
4040 | wc.masks.nw_tos = 0; |
4041 | wc.masks.nw_ttl = 0; | |
b459a924 BP |
4042 | } |
4043 | if (!(may_match & MAY_ARP_SHA)) { | |
26720e24 | 4044 | memset(wc.masks.arp_sha, 0, ETH_ADDR_LEN); |
b459a924 BP |
4045 | } |
4046 | if (!(may_match & MAY_ARP_THA)) { | |
26720e24 | 4047 | memset(wc.masks.arp_tha, 0, ETH_ADDR_LEN); |
b459a924 | 4048 | } |
d78477ec | 4049 | if (!(may_match & MAY_IPV6)) { |
26720e24 BP |
4050 | wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any; |
4051 | wc.masks.ipv6_label = htonl(0); | |
b459a924 BP |
4052 | } |
4053 | if (!(may_match & MAY_ND_TARGET)) { | |
26720e24 | 4054 | wc.masks.nd_target = in6addr_any; |
b459a924 BP |
4055 | } |
4056 | ||
4057 | /* Log any changes. */ | |
81a76618 | 4058 | if (!flow_wildcards_equal(&wc, &match->wc)) { |
3cbd9931 | 4059 | bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl); |
81a76618 | 4060 | char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL; |
b459a924 | 4061 | |
81a76618 BP |
4062 | match->wc = wc; |
4063 | match_zero_wildcarded_fields(match); | |
b459a924 BP |
4064 | |
4065 | if (log) { | |
81a76618 | 4066 | char *post = match_to_string(match, OFP_DEFAULT_PRIORITY); |
b459a924 BP |
4067 | VLOG_INFO("normalization changed ofp_match, details:"); |
4068 | VLOG_INFO(" pre: %s", pre); | |
4069 | VLOG_INFO("post: %s", post); | |
4070 | free(pre); | |
4071 | free(post); | |
4072 | } | |
fa37b408 | 4073 | } |
3f09c339 | 4074 | } |
26c112c2 | 4075 | |
81a76618 | 4076 | /* "Normalizes" the wildcards in 'match'. That means: |
3cbd9931 BP |
4077 | * |
4078 | * 1. If the type of level N is known, then only the valid fields for that | |
4079 | * level may be specified. For example, ARP does not have a TOS field, | |
81a76618 | 4080 | * so nw_tos must be wildcarded if 'match' specifies an ARP flow. |
3cbd9931 | 4081 | * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and |
81a76618 | 4082 | * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an |
3cbd9931 BP |
4083 | * IPv4 flow. |
4084 | * | |
4085 | * 2. If the type of level N is not known (or not understood by Open | |
4086 | * vSwitch), then no fields at all for that level may be specified. For | |
4087 | * example, Open vSwitch does not understand SCTP, an L4 protocol, so the | |
81a76618 | 4088 | * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an |
3cbd9931 BP |
4089 | * SCTP flow. |
4090 | * | |
81a76618 | 4091 | * If this function changes 'match', it logs a rate-limited informational |
3cbd9931 BP |
4092 | * message. */ |
4093 | void | |
81a76618 | 4094 | ofputil_normalize_match(struct match *match) |
3cbd9931 | 4095 | { |
81a76618 | 4096 | ofputil_normalize_match__(match, true); |
3cbd9931 BP |
4097 | } |
4098 | ||
81a76618 BP |
4099 | /* Same as ofputil_normalize_match() without the logging. Thus, this function |
4100 | * is suitable for a program's internal use, whereas ofputil_normalize_match() | |
3cbd9931 BP |
4101 | * sense for use on flows received from elsewhere (so that a bug in the program |
4102 | * that sent them can be reported and corrected). */ | |
4103 | void | |
81a76618 | 4104 | ofputil_normalize_match_quiet(struct match *match) |
3cbd9931 | 4105 | { |
81a76618 | 4106 | ofputil_normalize_match__(match, false); |
3cbd9931 BP |
4107 | } |
4108 | ||
0ff22822 BP |
4109 | /* Parses a key or a key-value pair from '*stringp'. |
4110 | * | |
4111 | * On success: Stores the key into '*keyp'. Stores the value, if present, into | |
4112 | * '*valuep', otherwise an empty string. Advances '*stringp' past the end of | |
4113 | * the key-value pair, preparing it for another call. '*keyp' and '*valuep' | |
4114 | * are substrings of '*stringp' created by replacing some of its bytes by null | |
4115 | * terminators. Returns true. | |
4116 | * | |
4117 | * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to | |
4118 | * NULL and returns false. */ | |
4119 | bool | |
4120 | ofputil_parse_key_value(char **stringp, char **keyp, char **valuep) | |
4121 | { | |
4122 | char *pos, *key, *value; | |
4123 | size_t key_len; | |
4124 | ||
4125 | pos = *stringp; | |
4126 | pos += strspn(pos, ", \t\r\n"); | |
4127 | if (*pos == '\0') { | |
4128 | *keyp = *valuep = NULL; | |
4129 | return false; | |
4130 | } | |
4131 | ||
4132 | key = pos; | |
4133 | key_len = strcspn(pos, ":=(, \t\r\n"); | |
4134 | if (key[key_len] == ':' || key[key_len] == '=') { | |
4135 | /* The value can be separated by a colon. */ | |
4136 | size_t value_len; | |
4137 | ||
4138 | value = key + key_len + 1; | |
4139 | value_len = strcspn(value, ", \t\r\n"); | |
4140 | pos = value + value_len + (value[value_len] != '\0'); | |
4141 | value[value_len] = '\0'; | |
4142 | } else if (key[key_len] == '(') { | |
4143 | /* The value can be surrounded by balanced parentheses. The outermost | |
4144 | * set of parentheses is removed. */ | |
4145 | int level = 1; | |
4146 | size_t value_len; | |
4147 | ||
4148 | value = key + key_len + 1; | |
4149 | for (value_len = 0; level > 0; value_len++) { | |
4150 | switch (value[value_len]) { | |
4151 | case '\0': | |
33cadc50 BP |
4152 | level = 0; |
4153 | break; | |
0ff22822 BP |
4154 | |
4155 | case '(': | |
4156 | level++; | |
4157 | break; | |
4158 | ||
4159 | case ')': | |
4160 | level--; | |
4161 | break; | |
4162 | } | |
4163 | } | |
4164 | value[value_len - 1] = '\0'; | |
4165 | pos = value + value_len; | |
4166 | } else { | |
4167 | /* There might be no value at all. */ | |
4168 | value = key + key_len; /* Will become the empty string below. */ | |
4169 | pos = key + key_len + (key[key_len] != '\0'); | |
4170 | } | |
4171 | key[key_len] = '\0'; | |
4172 | ||
4173 | *stringp = pos; | |
4174 | *keyp = key; | |
4175 | *valuep = value; | |
4176 | return true; | |
4177 | } | |
f8e4867e SH |
4178 | |
4179 | /* Encode a dump ports request for 'port', the encoded message | |
4180 | * will be fore Open Flow version 'ofp_version'. Returns message | |
4181 | * as a struct ofpbuf. Returns encoded message on success, NULL on error */ | |
4182 | struct ofpbuf * | |
4183 | ofputil_encode_dump_ports_request(enum ofp_version ofp_version, int16_t port) | |
4184 | { | |
4185 | struct ofpbuf *request; | |
4186 | ||
4187 | switch (ofp_version) { | |
4188 | case OFP10_VERSION: { | |
4189 | struct ofp10_port_stats_request *req; | |
4190 | request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0); | |
4191 | req = ofpbuf_put_zeros(request, sizeof *req); | |
4192 | req->port_no = htons(port); | |
4193 | break; | |
4194 | } | |
4195 | case OFP11_VERSION: | |
4196 | case OFP12_VERSION: { | |
4197 | struct ofp11_port_stats_request *req; | |
4198 | request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0); | |
4199 | req = ofpbuf_put_zeros(request, sizeof *req); | |
4200 | req->port_no = ofputil_port_to_ofp11(port); | |
4201 | break; | |
4202 | } | |
4203 | default: | |
4204 | NOT_REACHED(); | |
4205 | } | |
4206 | ||
4207 | return request; | |
4208 | } | |
4209 | ||
4210 | static void | |
4211 | ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops, | |
4212 | struct ofp10_port_stats *ps10) | |
4213 | { | |
4214 | ps10->port_no = htons(ops->port_no); | |
4215 | memset(ps10->pad, 0, sizeof ps10->pad); | |
4216 | put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets)); | |
4217 | put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets)); | |
4218 | put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes)); | |
4219 | put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes)); | |
4220 | put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped)); | |
4221 | put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped)); | |
4222 | put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors)); | |
4223 | put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors)); | |
4224 | put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors)); | |
4225 | put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors)); | |
4226 | put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors)); | |
4227 | put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions)); | |
4228 | } | |
4229 | ||
4230 | static void | |
4231 | ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops, | |
4232 | struct ofp11_port_stats *ps11) | |
4233 | { | |
4234 | ps11->port_no = ofputil_port_to_ofp11(ops->port_no); | |
4235 | memset(ps11->pad, 0, sizeof ps11->pad); | |
4236 | ps11->rx_packets = htonll(ops->stats.rx_packets); | |
4237 | ps11->tx_packets = htonll(ops->stats.tx_packets); | |
4238 | ps11->rx_bytes = htonll(ops->stats.rx_bytes); | |
4239 | ps11->tx_bytes = htonll(ops->stats.tx_bytes); | |
4240 | ps11->rx_dropped = htonll(ops->stats.rx_dropped); | |
4241 | ps11->tx_dropped = htonll(ops->stats.tx_dropped); | |
4242 | ps11->rx_errors = htonll(ops->stats.rx_errors); | |
4243 | ps11->tx_errors = htonll(ops->stats.tx_errors); | |
4244 | ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors); | |
4245 | ps11->rx_over_err = htonll(ops->stats.rx_over_errors); | |
4246 | ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors); | |
4247 | ps11->collisions = htonll(ops->stats.collisions); | |
4248 | } | |
4249 | ||
ad4c35fe | 4250 | /* Encode a ports stat for 'ops' and append it to 'replies'. */ |
f8e4867e SH |
4251 | void |
4252 | ofputil_append_port_stat(struct list *replies, | |
4253 | const struct ofputil_port_stats *ops) | |
4254 | { | |
4255 | struct ofpbuf *msg = ofpbuf_from_list(list_back(replies)); | |
4256 | struct ofp_header *oh = msg->data; | |
4257 | ||
4258 | switch ((enum ofp_version)oh->version) { | |
4259 | case OFP12_VERSION: | |
4260 | case OFP11_VERSION: { | |
4261 | struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply); | |
4262 | ofputil_port_stats_to_ofp11(ops, reply); | |
4263 | break; | |
4264 | } | |
4265 | ||
4266 | case OFP10_VERSION: { | |
4267 | struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply); | |
4268 | ofputil_port_stats_to_ofp10(ops, reply); | |
4269 | break; | |
4270 | } | |
4271 | ||
4272 | default: | |
4273 | NOT_REACHED(); | |
4274 | } | |
4275 | } | |
4276 | ||
4277 | static enum ofperr | |
4278 | ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops, | |
4279 | const struct ofp10_port_stats *ps10) | |
4280 | { | |
4281 | memset(ops, 0, sizeof *ops); | |
4282 | ||
4283 | ops->port_no = ntohs(ps10->port_no); | |
4284 | ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets)); | |
4285 | ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets)); | |
4286 | ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes)); | |
4287 | ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes)); | |
4288 | ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped)); | |
4289 | ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped)); | |
4290 | ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors)); | |
4291 | ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors)); | |
4292 | ops->stats.rx_frame_errors = | |
4293 | ntohll(get_32aligned_be64(&ps10->rx_frame_err)); | |
4294 | ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err)); | |
4295 | ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err)); | |
4296 | ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions)); | |
4297 | ||
4298 | return 0; | |
4299 | } | |
4300 | ||
4301 | static enum ofperr | |
4302 | ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops, | |
4303 | const struct ofp11_port_stats *ps11) | |
4304 | { | |
4305 | enum ofperr error; | |
4306 | ||
4307 | memset(ops, 0, sizeof *ops); | |
4308 | error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no); | |
4309 | if (error) { | |
4310 | return error; | |
4311 | } | |
4312 | ||
4313 | ops->stats.rx_packets = ntohll(ps11->rx_packets); | |
4314 | ops->stats.tx_packets = ntohll(ps11->tx_packets); | |
4315 | ops->stats.rx_bytes = ntohll(ps11->rx_bytes); | |
4316 | ops->stats.tx_bytes = ntohll(ps11->tx_bytes); | |
4317 | ops->stats.rx_dropped = ntohll(ps11->rx_dropped); | |
4318 | ops->stats.tx_dropped = ntohll(ps11->tx_dropped); | |
4319 | ops->stats.rx_errors = ntohll(ps11->rx_errors); | |
4320 | ops->stats.tx_errors = ntohll(ps11->tx_errors); | |
4321 | ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err); | |
4322 | ops->stats.rx_over_errors = ntohll(ps11->rx_over_err); | |
4323 | ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err); | |
4324 | ops->stats.collisions = ntohll(ps11->collisions); | |
4325 | ||
4326 | return 0; | |
4327 | } | |
4328 | ||
4329 | /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY | |
4330 | * message 'oh'. */ | |
4331 | size_t | |
4332 | ofputil_count_port_stats(const struct ofp_header *oh) | |
4333 | { | |
4334 | struct ofpbuf b; | |
4335 | ||
4336 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); | |
4337 | ofpraw_pull_assert(&b); | |
4338 | ||
4339 | BUILD_ASSERT(sizeof(struct ofp10_port_stats) == | |
4340 | sizeof(struct ofp11_port_stats)); | |
4341 | return b.size / sizeof(struct ofp10_port_stats); | |
4342 | } | |
4343 | ||
4344 | /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract | |
4345 | * ofputil_port_stats in 'ps'. | |
4346 | * | |
4347 | * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow | |
4348 | * message. Calling this function multiple times for a single 'msg' iterates | |
4349 | * through the replies. The caller must initially leave 'msg''s layer pointers | |
4350 | * null and not modify them between calls. | |
4351 | * | |
4352 | * Returns 0 if successful, EOF if no replies were left in this 'msg', | |
4353 | * otherwise a positive errno value. */ | |
4354 | int | |
4355 | ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg) | |
4356 | { | |
4357 | enum ofperr error; | |
4358 | enum ofpraw raw; | |
4359 | ||
4360 | error = (msg->l2 | |
4361 | ? ofpraw_decode(&raw, msg->l2) | |
4362 | : ofpraw_pull(&raw, msg)); | |
4363 | if (error) { | |
4364 | return error; | |
4365 | } | |
4366 | ||
4367 | if (!msg->size) { | |
4368 | return EOF; | |
4369 | } else if (raw == OFPRAW_OFPST11_PORT_REPLY) { | |
4370 | const struct ofp11_port_stats *ps11; | |
4371 | ||
4372 | ps11 = ofpbuf_try_pull(msg, sizeof *ps11); | |
4373 | if (!ps11) { | |
4374 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %zu leftover " | |
4375 | "bytes at end", msg->size); | |
4376 | return OFPERR_OFPBRC_BAD_LEN; | |
4377 | } | |
4378 | return ofputil_port_stats_from_ofp11(ps, ps11); | |
4379 | } else if (raw == OFPRAW_OFPST10_PORT_REPLY) { | |
4380 | const struct ofp10_port_stats *ps10; | |
4381 | ||
4382 | ps10 = ofpbuf_try_pull(msg, sizeof *ps10); | |
4383 | if (!ps10) { | |
4384 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %zu leftover " | |
4385 | "bytes at end", msg->size); | |
4386 | return OFPERR_OFPBRC_BAD_LEN; | |
4387 | } | |
4388 | return ofputil_port_stats_from_ofp10(ps, ps10); | |
4389 | } else { | |
4390 | NOT_REACHED(); | |
4391 | } | |
4392 | ||
4393 | } | |
4394 | ||
4395 | /* Parse a port status request message into a 16 bit OpenFlow 1.0 | |
4396 | * port number and stores the latter in '*ofp10_port'. | |
4397 | * Returns 0 if successful, otherwise an OFPERR_* number. */ | |
4398 | enum ofperr | |
4399 | ofputil_decode_port_stats_request(const struct ofp_header *request, | |
4400 | uint16_t *ofp10_port) | |
4401 | { | |
4402 | switch ((enum ofp_version)request->version) { | |
4403 | case OFP12_VERSION: | |
4404 | case OFP11_VERSION: { | |
4405 | const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request); | |
4406 | return ofputil_port_from_ofp11(psr11->port_no, ofp10_port); | |
4407 | } | |
4408 | ||
4409 | case OFP10_VERSION: { | |
4410 | const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request); | |
4411 | *ofp10_port = ntohs(psr10->port_no); | |
4412 | return 0; | |
4413 | } | |
4414 | ||
4415 | default: | |
4416 | NOT_REACHED(); | |
4417 | } | |
4418 | } | |
64626975 SH |
4419 | |
4420 | /* Parse a queue status request message into 'oqsr'. | |
4421 | * Returns 0 if successful, otherwise an OFPERR_* number. */ | |
4422 | enum ofperr | |
4423 | ofputil_decode_queue_stats_request(const struct ofp_header *request, | |
4424 | struct ofputil_queue_stats_request *oqsr) | |
4425 | { | |
4426 | switch ((enum ofp_version)request->version) { | |
4427 | case OFP12_VERSION: | |
4428 | case OFP11_VERSION: { | |
4429 | const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request); | |
4430 | oqsr->queue_id = ntohl(qsr11->queue_id); | |
4431 | return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no); | |
4432 | } | |
4433 | ||
4434 | case OFP10_VERSION: { | |
4435 | const struct ofp10_queue_stats_request *qsr11 = ofpmsg_body(request); | |
4436 | oqsr->queue_id = ntohl(qsr11->queue_id); | |
4437 | oqsr->port_no = ntohs(qsr11->port_no); | |
4438 | return 0; | |
4439 | } | |
4440 | ||
4441 | default: | |
4442 | NOT_REACHED(); | |
4443 | } | |
4444 | } | |
4445 | ||
4446 | /* Encode a queue statsrequest for 'oqsr', the encoded message | |
4447 | * will be fore Open Flow version 'ofp_version'. Returns message | |
4448 | * as a struct ofpbuf. Returns encoded message on success, NULL on error */ | |
4449 | struct ofpbuf * | |
4450 | ofputil_encode_queue_stats_request(enum ofp_version ofp_version, | |
4451 | const struct ofputil_queue_stats_request *oqsr) | |
4452 | { | |
4453 | struct ofpbuf *request; | |
4454 | ||
4455 | switch (ofp_version) { | |
4456 | case OFP11_VERSION: | |
4457 | case OFP12_VERSION: { | |
4458 | struct ofp11_queue_stats_request *req; | |
4459 | request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0); | |
4460 | req = ofpbuf_put_zeros(request, sizeof *req); | |
4461 | req->port_no = ofputil_port_to_ofp11(oqsr->port_no); | |
4462 | req->queue_id = htonl(oqsr->queue_id); | |
4463 | break; | |
4464 | } | |
4465 | case OFP10_VERSION: { | |
4466 | struct ofp10_queue_stats_request *req; | |
4467 | request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0); | |
4468 | req = ofpbuf_put_zeros(request, sizeof *req); | |
4469 | req->port_no = htons(oqsr->port_no); | |
4470 | req->queue_id = htonl(oqsr->queue_id); | |
4471 | break; | |
4472 | } | |
4473 | default: | |
4474 | NOT_REACHED(); | |
4475 | } | |
4476 | ||
4477 | return request; | |
4478 | } | |
4479 | ||
4480 | /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY | |
4481 | * message 'oh'. */ | |
4482 | size_t | |
4483 | ofputil_count_queue_stats(const struct ofp_header *oh) | |
4484 | { | |
4485 | struct ofpbuf b; | |
4486 | ||
4487 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); | |
4488 | ofpraw_pull_assert(&b); | |
4489 | ||
4490 | BUILD_ASSERT(sizeof(struct ofp10_queue_stats) == | |
4491 | sizeof(struct ofp11_queue_stats)); | |
4492 | return b.size / sizeof(struct ofp10_queue_stats); | |
4493 | } | |
4494 | ||
4495 | static enum ofperr | |
4496 | ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs, | |
4497 | const struct ofp10_queue_stats *qs10) | |
4498 | { | |
4499 | oqs->port_no = ntohs(qs10->port_no); | |
4500 | oqs->queue_id = ntohl(qs10->queue_id); | |
4501 | oqs->stats.tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes)); | |
4502 | oqs->stats.tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets)); | |
4503 | oqs->stats.tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors)); | |
4504 | ||
4505 | return 0; | |
4506 | } | |
4507 | ||
4508 | static enum ofperr | |
4509 | ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs, | |
4510 | const struct ofp11_queue_stats *qs11) | |
4511 | { | |
4512 | enum ofperr error; | |
4513 | ||
4514 | error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no); | |
4515 | if (error) { | |
4516 | return error; | |
4517 | } | |
4518 | ||
4519 | oqs->queue_id = ntohl(qs11->queue_id); | |
4520 | oqs->stats.tx_bytes = ntohll(qs11->tx_bytes); | |
4521 | oqs->stats.tx_packets = ntohll(qs11->tx_packets); | |
4522 | oqs->stats.tx_errors = ntohll(qs11->tx_errors); | |
4523 | ||
4524 | return 0; | |
4525 | } | |
4526 | ||
4527 | /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract | |
4528 | * ofputil_queue_stats in 'qs'. | |
4529 | * | |
4530 | * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow | |
4531 | * message. Calling this function multiple times for a single 'msg' iterates | |
4532 | * through the replies. The caller must initially leave 'msg''s layer pointers | |
4533 | * null and not modify them between calls. | |
4534 | * | |
4535 | * Returns 0 if successful, EOF if no replies were left in this 'msg', | |
4536 | * otherwise a positive errno value. */ | |
4537 | int | |
4538 | ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg) | |
4539 | { | |
4540 | enum ofperr error; | |
4541 | enum ofpraw raw; | |
4542 | ||
4543 | error = (msg->l2 | |
4544 | ? ofpraw_decode(&raw, msg->l2) | |
4545 | : ofpraw_pull(&raw, msg)); | |
4546 | if (error) { | |
4547 | return error; | |
4548 | } | |
4549 | ||
4550 | if (!msg->size) { | |
4551 | return EOF; | |
4552 | } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) { | |
4553 | const struct ofp11_queue_stats *qs11; | |
4554 | ||
4555 | qs11 = ofpbuf_try_pull(msg, sizeof *qs11); | |
4556 | if (!qs11) { | |
4557 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %zu leftover " | |
4558 | "bytes at end", msg->size); | |
4559 | return OFPERR_OFPBRC_BAD_LEN; | |
4560 | } | |
4561 | return ofputil_queue_stats_from_ofp11(qs, qs11); | |
4562 | } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) { | |
4563 | const struct ofp10_queue_stats *qs10; | |
4564 | ||
4565 | qs10 = ofpbuf_try_pull(msg, sizeof *qs10); | |
4566 | if (!qs10) { | |
4567 | VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %zu leftover " | |
4568 | "bytes at end", msg->size); | |
4569 | return OFPERR_OFPBRC_BAD_LEN; | |
4570 | } | |
4571 | return ofputil_queue_stats_from_ofp10(qs, qs10); | |
4572 | } else { | |
4573 | NOT_REACHED(); | |
4574 | } | |
4575 | } | |
4576 | ||
4577 | static void | |
4578 | ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs, | |
4579 | struct ofp10_queue_stats *qs10) | |
4580 | { | |
4581 | qs10->port_no = htons(oqs->port_no); | |
4582 | memset(qs10->pad, 0, sizeof qs10->pad); | |
4583 | qs10->queue_id = htonl(oqs->queue_id); | |
4584 | put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->stats.tx_bytes)); | |
4585 | put_32aligned_be64(&qs10->tx_packets, htonll(oqs->stats.tx_packets)); | |
4586 | put_32aligned_be64(&qs10->tx_errors, htonll(oqs->stats.tx_errors)); | |
4587 | } | |
4588 | ||
4589 | static void | |
4590 | ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs, | |
4591 | struct ofp11_queue_stats *qs11) | |
4592 | { | |
4593 | qs11->port_no = ofputil_port_to_ofp11(oqs->port_no); | |
4594 | qs11->queue_id = htonl(oqs->queue_id); | |
4595 | qs11->tx_bytes = htonll(oqs->stats.tx_bytes); | |
4596 | qs11->tx_packets = htonll(oqs->stats.tx_packets); | |
4597 | qs11->tx_errors = htonll(oqs->stats.tx_errors); | |
4598 | } | |
4599 | ||
4600 | /* Encode a queue stat for 'oqs' and append it to 'replies'. */ | |
4601 | void | |
4602 | ofputil_append_queue_stat(struct list *replies, | |
4603 | const struct ofputil_queue_stats *oqs) | |
4604 | { | |
4605 | struct ofpbuf *msg = ofpbuf_from_list(list_back(replies)); | |
4606 | struct ofp_header *oh = msg->data; | |
4607 | ||
4608 | switch ((enum ofp_version)oh->version) { | |
4609 | case OFP12_VERSION: | |
4610 | case OFP11_VERSION: { | |
4611 | struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);; | |
4612 | ofputil_queue_stats_to_ofp11(oqs, reply); | |
4613 | break; | |
4614 | } | |
4615 | ||
4616 | case OFP10_VERSION: { | |
4617 | struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);; | |
4618 | ofputil_queue_stats_to_ofp10(oqs, reply); | |
4619 | break; | |
4620 | } | |
4621 | ||
4622 | default: | |
4623 | NOT_REACHED(); | |
4624 | } | |
4625 | } |