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Commit | Line | Data |
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064af421 | 1 | /* |
e0edde6f | 2 | * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc. |
064af421 | 3 | * |
a14bc59f BP |
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: | |
064af421 | 7 | * |
a14bc59f BP |
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. | |
064af421 BP |
15 | */ |
16 | ||
d31f1109 | 17 | #include <arpa/inet.h> |
064af421 BP |
18 | #include <config.h> |
19 | #include "odp-util.h" | |
36956a7d | 20 | #include <errno.h> |
064af421 | 21 | #include <inttypes.h> |
7202cbe5 | 22 | #include <math.h> |
6ca00f6f | 23 | #include <netinet/in.h> |
685a51a5 | 24 | #include <netinet/icmp6.h> |
064af421 BP |
25 | #include <stdlib.h> |
26 | #include <string.h> | |
cdee00fd | 27 | #include "byte-order.h" |
064af421 BP |
28 | #include "coverage.h" |
29 | #include "dynamic-string.h" | |
30 | #include "flow.h" | |
cdee00fd | 31 | #include "netlink.h" |
3bffc610 | 32 | #include "ofpbuf.h" |
0ae60917 | 33 | #include "openvswitch/tunnel.h" |
064af421 | 34 | #include "packets.h" |
b2a60db8 | 35 | #include "shash.h" |
064af421 BP |
36 | #include "timeval.h" |
37 | #include "util.h" | |
34118cae BP |
38 | #include "vlog.h" |
39 | ||
40 | VLOG_DEFINE_THIS_MODULE(odp_util); | |
064af421 | 41 | |
df2c07f4 JP |
42 | /* The interface between userspace and kernel uses an "OVS_*" prefix. |
43 | * Since this is fairly non-specific for the OVS userspace components, | |
44 | * "ODP_*" (Open vSwitch Datapath) is used as the prefix for | |
45 | * interactions with the datapath. | |
46 | */ | |
47 | ||
7202cbe5 BP |
48 | /* The set of characters that may separate one action or one key attribute |
49 | * from another. */ | |
50 | static const char *delimiters = ", \t\r\n"; | |
51 | ||
52 | static int parse_odp_key_attr(const char *, const struct shash *port_names, | |
53 | struct ofpbuf *); | |
a052b51b BP |
54 | static void format_odp_key_attr(const struct nlattr *a, struct ds *ds); |
55 | ||
98403001 BP |
56 | /* Returns one the following for the action with the given OVS_ACTION_ATTR_* |
57 | * 'type': | |
58 | * | |
59 | * - For an action whose argument has a fixed length, returned that | |
60 | * nonnegative length in bytes. | |
61 | * | |
62 | * - For an action with a variable-length argument, returns -2. | |
63 | * | |
64 | * - For an invalid 'type', returns -1. */ | |
4edb9ae9 | 65 | static int |
cdee00fd BP |
66 | odp_action_len(uint16_t type) |
67 | { | |
df2c07f4 | 68 | if (type > OVS_ACTION_ATTR_MAX) { |
cdee00fd BP |
69 | return -1; |
70 | } | |
71 | ||
09ded0ad | 72 | switch ((enum ovs_action_attr) type) { |
fea393b1 | 73 | case OVS_ACTION_ATTR_OUTPUT: return sizeof(uint32_t); |
98403001 | 74 | case OVS_ACTION_ATTR_USERSPACE: return -2; |
fea393b1 BP |
75 | case OVS_ACTION_ATTR_PUSH_VLAN: return sizeof(struct ovs_action_push_vlan); |
76 | case OVS_ACTION_ATTR_POP_VLAN: return 0; | |
4edb9ae9 | 77 | case OVS_ACTION_ATTR_SET: return -2; |
98403001 | 78 | case OVS_ACTION_ATTR_SAMPLE: return -2; |
df2c07f4 JP |
79 | |
80 | case OVS_ACTION_ATTR_UNSPEC: | |
81 | case __OVS_ACTION_ATTR_MAX: | |
cdee00fd BP |
82 | return -1; |
83 | } | |
84 | ||
85 | return -1; | |
86 | } | |
87 | ||
744791b5 BP |
88 | static const char * |
89 | ovs_key_attr_to_string(enum ovs_key_attr attr) | |
90 | { | |
91 | static char unknown_attr[3 + INT_STRLEN(unsigned int) + 1]; | |
92 | ||
93 | switch (attr) { | |
94 | case OVS_KEY_ATTR_UNSPEC: return "unspec"; | |
fea393b1 | 95 | case OVS_KEY_ATTR_ENCAP: return "encap"; |
744791b5 | 96 | case OVS_KEY_ATTR_PRIORITY: return "priority"; |
744791b5 BP |
97 | case OVS_KEY_ATTR_IN_PORT: return "in_port"; |
98 | case OVS_KEY_ATTR_ETHERNET: return "eth"; | |
fea393b1 | 99 | case OVS_KEY_ATTR_VLAN: return "vlan"; |
744791b5 BP |
100 | case OVS_KEY_ATTR_ETHERTYPE: return "eth_type"; |
101 | case OVS_KEY_ATTR_IPV4: return "ipv4"; | |
102 | case OVS_KEY_ATTR_IPV6: return "ipv6"; | |
103 | case OVS_KEY_ATTR_TCP: return "tcp"; | |
104 | case OVS_KEY_ATTR_UDP: return "udp"; | |
105 | case OVS_KEY_ATTR_ICMP: return "icmp"; | |
106 | case OVS_KEY_ATTR_ICMPV6: return "icmpv6"; | |
107 | case OVS_KEY_ATTR_ARP: return "arp"; | |
108 | case OVS_KEY_ATTR_ND: return "nd"; | |
9ac130ad | 109 | case OVS_KEY_ATTR_TUN_ID: return "tun_id"; |
744791b5 BP |
110 | |
111 | case __OVS_KEY_ATTR_MAX: | |
112 | default: | |
113 | snprintf(unknown_attr, sizeof unknown_attr, "key%u", | |
114 | (unsigned int) attr); | |
115 | return unknown_attr; | |
116 | } | |
117 | } | |
118 | ||
cdee00fd BP |
119 | static void |
120 | format_generic_odp_action(struct ds *ds, const struct nlattr *a) | |
121 | { | |
8ba43fbd BP |
122 | size_t len = nl_attr_get_size(a); |
123 | ||
cdee00fd | 124 | ds_put_format(ds, "action%"PRId16, nl_attr_type(a)); |
8ba43fbd | 125 | if (len) { |
cdee00fd BP |
126 | const uint8_t *unspec; |
127 | unsigned int i; | |
128 | ||
129 | unspec = nl_attr_get(a); | |
8ba43fbd | 130 | for (i = 0; i < len; i++) { |
cdee00fd BP |
131 | ds_put_char(ds, i ? ' ': '('); |
132 | ds_put_format(ds, "%02x", unspec[i]); | |
133 | } | |
134 | ds_put_char(ds, ')'); | |
135 | } | |
136 | } | |
137 | ||
6ff686f2 PS |
138 | static void |
139 | format_odp_sample_action(struct ds *ds, const struct nlattr *attr) | |
140 | { | |
141 | static const struct nl_policy ovs_sample_policy[] = { | |
142 | [OVS_SAMPLE_ATTR_PROBABILITY] = { .type = NL_A_U32 }, | |
143 | [OVS_SAMPLE_ATTR_ACTIONS] = { .type = NL_A_NESTED } | |
144 | }; | |
145 | struct nlattr *a[ARRAY_SIZE(ovs_sample_policy)]; | |
6ff686f2 PS |
146 | double percentage; |
147 | const struct nlattr *nla_acts; | |
148 | int len; | |
149 | ||
150 | ds_put_cstr(ds, "sample"); | |
151 | ||
5621afff | 152 | if (!nl_parse_nested(attr, ovs_sample_policy, a, ARRAY_SIZE(a))) { |
6ff686f2 PS |
153 | ds_put_cstr(ds, "(error)"); |
154 | return; | |
155 | } | |
156 | ||
157 | percentage = (100.0 * nl_attr_get_u32(a[OVS_SAMPLE_ATTR_PROBABILITY])) / | |
158 | UINT32_MAX; | |
159 | ||
160 | ds_put_format(ds, "(sample=%.1f%%,", percentage); | |
161 | ||
162 | ds_put_cstr(ds, "actions("); | |
163 | nla_acts = nl_attr_get(a[OVS_SAMPLE_ATTR_ACTIONS]); | |
164 | len = nl_attr_get_size(a[OVS_SAMPLE_ATTR_ACTIONS]); | |
165 | format_odp_actions(ds, nla_acts, len); | |
166 | ds_put_format(ds, "))"); | |
167 | } | |
168 | ||
98403001 BP |
169 | static void |
170 | format_odp_userspace_action(struct ds *ds, const struct nlattr *attr) | |
171 | { | |
172 | static const struct nl_policy ovs_userspace_policy[] = { | |
173 | [OVS_USERSPACE_ATTR_PID] = { .type = NL_A_U32 }, | |
174 | [OVS_USERSPACE_ATTR_USERDATA] = { .type = NL_A_U64, .optional = true }, | |
175 | }; | |
176 | struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)]; | |
177 | ||
178 | if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) { | |
179 | ds_put_cstr(ds, "userspace(error)"); | |
180 | return; | |
181 | } | |
182 | ||
183 | ds_put_format(ds, "userspace(pid=%"PRIu32, | |
184 | nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID])); | |
185 | ||
186 | if (a[OVS_USERSPACE_ATTR_USERDATA]) { | |
187 | uint64_t userdata = nl_attr_get_u64(a[OVS_USERSPACE_ATTR_USERDATA]); | |
188 | struct user_action_cookie cookie; | |
189 | ||
190 | memcpy(&cookie, &userdata, sizeof cookie); | |
191 | ||
999fba59 | 192 | if (cookie.type == USER_ACTION_COOKIE_SFLOW) { |
98403001 BP |
193 | ds_put_format(ds, ",sFlow,n_output=%"PRIu8"," |
194 | "vid=%"PRIu16",pcp=%"PRIu8",ifindex=%"PRIu32, | |
195 | cookie.n_output, vlan_tci_to_vid(cookie.vlan_tci), | |
196 | vlan_tci_to_pcp(cookie.vlan_tci), cookie.data); | |
197 | } else { | |
198 | ds_put_format(ds, ",userdata=0x%"PRIx64, userdata); | |
199 | } | |
200 | } | |
201 | ||
202 | ds_put_char(ds, ')'); | |
203 | } | |
204 | ||
8ddc056d BP |
205 | static void |
206 | format_vlan_tci(struct ds *ds, ovs_be16 vlan_tci) | |
207 | { | |
208 | ds_put_format(ds, "vid=%"PRIu16",pcp=%d", | |
209 | vlan_tci_to_vid(vlan_tci), | |
210 | vlan_tci_to_pcp(vlan_tci)); | |
211 | if (!(vlan_tci & htons(VLAN_CFI))) { | |
212 | ds_put_cstr(ds, ",cfi=0"); | |
213 | } | |
214 | } | |
215 | ||
4edb9ae9 | 216 | static void |
cdee00fd | 217 | format_odp_action(struct ds *ds, const struct nlattr *a) |
064af421 | 218 | { |
98403001 | 219 | int expected_len; |
4edb9ae9 | 220 | enum ovs_action_attr type = nl_attr_type(a); |
fea393b1 | 221 | const struct ovs_action_push_vlan *vlan; |
cdee00fd | 222 | |
98403001 BP |
223 | expected_len = odp_action_len(nl_attr_type(a)); |
224 | if (expected_len != -2 && nl_attr_get_size(a) != expected_len) { | |
8ba43fbd | 225 | ds_put_format(ds, "bad length %zu, expected %d for: ", |
98403001 | 226 | nl_attr_get_size(a), expected_len); |
cdee00fd BP |
227 | format_generic_odp_action(ds, a); |
228 | return; | |
229 | } | |
230 | ||
4edb9ae9 | 231 | switch (type) { |
df2c07f4 | 232 | case OVS_ACTION_ATTR_OUTPUT: |
cdee00fd | 233 | ds_put_format(ds, "%"PRIu16, nl_attr_get_u32(a)); |
064af421 | 234 | break; |
df2c07f4 | 235 | case OVS_ACTION_ATTR_USERSPACE: |
98403001 | 236 | format_odp_userspace_action(ds, a); |
064af421 | 237 | break; |
4edb9ae9 PS |
238 | case OVS_ACTION_ATTR_SET: |
239 | ds_put_cstr(ds, "set("); | |
240 | format_odp_key_attr(nl_attr_get(a), ds); | |
241 | ds_put_cstr(ds, ")"); | |
064af421 | 242 | break; |
fea393b1 BP |
243 | case OVS_ACTION_ATTR_PUSH_VLAN: |
244 | vlan = nl_attr_get(a); | |
245 | ds_put_cstr(ds, "push_vlan("); | |
246 | if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) { | |
247 | ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid)); | |
248 | } | |
8ddc056d BP |
249 | format_vlan_tci(ds, vlan->vlan_tci); |
250 | ds_put_char(ds, ')'); | |
064af421 | 251 | break; |
fea393b1 BP |
252 | case OVS_ACTION_ATTR_POP_VLAN: |
253 | ds_put_cstr(ds, "pop_vlan"); | |
064af421 | 254 | break; |
6ff686f2 PS |
255 | case OVS_ACTION_ATTR_SAMPLE: |
256 | format_odp_sample_action(ds, a); | |
257 | break; | |
4edb9ae9 PS |
258 | case OVS_ACTION_ATTR_UNSPEC: |
259 | case __OVS_ACTION_ATTR_MAX: | |
064af421 | 260 | default: |
cdee00fd | 261 | format_generic_odp_action(ds, a); |
064af421 BP |
262 | break; |
263 | } | |
264 | } | |
265 | ||
266 | void | |
cdee00fd | 267 | format_odp_actions(struct ds *ds, const struct nlattr *actions, |
cf22f8cb | 268 | size_t actions_len) |
064af421 | 269 | { |
cdee00fd BP |
270 | if (actions_len) { |
271 | const struct nlattr *a; | |
272 | unsigned int left; | |
273 | ||
274 | NL_ATTR_FOR_EACH (a, left, actions, actions_len) { | |
275 | if (a != actions) { | |
276 | ds_put_char(ds, ','); | |
277 | } | |
278 | format_odp_action(ds, a); | |
064af421 | 279 | } |
cdee00fd | 280 | if (left) { |
3a8cfc50 BP |
281 | int i; |
282 | ||
3476fce3 BP |
283 | if (left == actions_len) { |
284 | ds_put_cstr(ds, "<empty>"); | |
285 | } | |
3a8cfc50 BP |
286 | ds_put_format(ds, ",***%u leftover bytes*** (", left); |
287 | for (i = 0; i < left; i++) { | |
288 | ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]); | |
289 | } | |
290 | ds_put_char(ds, ')'); | |
cdee00fd BP |
291 | } |
292 | } else { | |
064af421 BP |
293 | ds_put_cstr(ds, "drop"); |
294 | } | |
295 | } | |
7202cbe5 BP |
296 | |
297 | static int | |
298 | parse_odp_action(const char *s, const struct shash *port_names, | |
299 | struct ofpbuf *actions) | |
300 | { | |
301 | /* Many of the sscanf calls in this function use oversized destination | |
302 | * fields because some sscanf() implementations truncate the range of %i | |
303 | * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a | |
304 | * value of 0x7fff. The other alternatives are to allow only a single | |
305 | * radix (e.g. decimal or hexadecimal) or to write more sophisticated | |
306 | * parsers. | |
307 | * | |
308 | * The tun_id parser has to use an alternative approach because there is no | |
309 | * type larger than 64 bits. */ | |
310 | ||
311 | { | |
312 | unsigned long long int port; | |
313 | int n = -1; | |
314 | ||
315 | if (sscanf(s, "%lli%n", &port, &n) > 0 && n > 0) { | |
316 | nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port); | |
317 | return n; | |
318 | } | |
319 | } | |
320 | ||
321 | if (port_names) { | |
322 | int len = strcspn(s, delimiters); | |
323 | struct shash_node *node; | |
324 | ||
325 | node = shash_find_len(port_names, s, len); | |
326 | if (node) { | |
327 | nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, | |
328 | (uintptr_t) node->data); | |
329 | return len; | |
330 | } | |
331 | } | |
332 | ||
333 | { | |
334 | unsigned long long int pid; | |
7202cbe5 BP |
335 | unsigned long long int ifindex; |
336 | char userdata_s[32]; | |
337 | int n_output; | |
338 | int vid, pcp; | |
339 | int n = -1; | |
340 | ||
341 | if (sscanf(s, "userspace(pid=%lli)%n", &pid, &n) > 0 && n > 0) { | |
342 | odp_put_userspace_action(pid, NULL, actions); | |
343 | return n; | |
7202cbe5 BP |
344 | } else if (sscanf(s, "userspace(pid=%lli,sFlow,n_output=%i,vid=%i," |
345 | "pcp=%i,ifindex=%lli)%n", &pid, &n_output, | |
346 | &vid, &pcp, &ifindex, &n) > 0 && n > 0) { | |
347 | struct user_action_cookie cookie; | |
348 | uint16_t tci; | |
349 | ||
350 | tci = vid | (pcp << VLAN_PCP_SHIFT); | |
351 | if (tci) { | |
352 | tci |= VLAN_CFI; | |
353 | } | |
354 | ||
355 | cookie.type = USER_ACTION_COOKIE_SFLOW; | |
356 | cookie.n_output = n_output; | |
357 | cookie.vlan_tci = htons(tci); | |
358 | cookie.data = ifindex; | |
359 | odp_put_userspace_action(pid, &cookie, actions); | |
360 | return n; | |
361 | } else if (sscanf(s, "userspace(pid=%lli,userdata=" | |
362 | "%31[x0123456789abcdefABCDEF])%n", &pid, userdata_s, | |
363 | &n) > 0 && n > 0) { | |
364 | struct user_action_cookie cookie; | |
365 | uint64_t userdata; | |
366 | ||
367 | userdata = strtoull(userdata_s, NULL, 0); | |
368 | memcpy(&cookie, &userdata, sizeof cookie); | |
369 | odp_put_userspace_action(pid, &cookie, actions); | |
370 | return n; | |
371 | } | |
372 | } | |
373 | ||
374 | if (!strncmp(s, "set(", 4)) { | |
375 | size_t start_ofs; | |
376 | int retval; | |
377 | ||
378 | start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET); | |
379 | retval = parse_odp_key_attr(s + 4, port_names, actions); | |
380 | if (retval < 0) { | |
381 | return retval; | |
382 | } | |
383 | if (s[retval + 4] != ')') { | |
384 | return -EINVAL; | |
385 | } | |
386 | nl_msg_end_nested(actions, start_ofs); | |
387 | return retval + 5; | |
388 | } | |
389 | ||
becffb86 BP |
390 | { |
391 | struct ovs_action_push_vlan push; | |
392 | int tpid = ETH_TYPE_VLAN; | |
393 | int vid, pcp; | |
394 | int cfi = 1; | |
395 | int n = -1; | |
7202cbe5 | 396 | |
becffb86 BP |
397 | if ((sscanf(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n) > 0 |
398 | && n > 0) | |
399 | || (sscanf(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n", | |
400 | &vid, &pcp, &cfi, &n) > 0 && n > 0) | |
401 | || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n", | |
402 | &tpid, &vid, &pcp, &n) > 0 && n > 0) | |
403 | || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n", | |
404 | &tpid, &vid, &pcp, &cfi, &n) > 0 && n > 0)) { | |
405 | push.vlan_tpid = htons(tpid); | |
406 | push.vlan_tci = htons((vid << VLAN_VID_SHIFT) | |
407 | | (pcp << VLAN_PCP_SHIFT) | |
408 | | (cfi ? VLAN_CFI : 0)); | |
409 | nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN, | |
410 | &push, sizeof push); | |
411 | ||
412 | return n; | |
7202cbe5 | 413 | } |
7202cbe5 BP |
414 | } |
415 | ||
becffb86 BP |
416 | if (!strncmp(s, "pop_vlan", 8)) { |
417 | nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN); | |
418 | return 8; | |
7202cbe5 BP |
419 | } |
420 | ||
421 | { | |
422 | double percentage; | |
423 | int n = -1; | |
424 | ||
425 | if (sscanf(s, "sample(sample=%lf%%,actions(%n", &percentage, &n) > 0 | |
426 | && percentage >= 0. && percentage <= 100.0 | |
427 | && n > 0) { | |
428 | size_t sample_ofs, actions_ofs; | |
429 | double probability; | |
430 | ||
431 | probability = floor(UINT32_MAX * (percentage / 100.0) + .5); | |
432 | sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE); | |
433 | nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY, | |
434 | (probability <= 0 ? 0 | |
435 | : probability >= UINT32_MAX ? UINT32_MAX | |
436 | : probability)); | |
437 | ||
438 | actions_ofs = nl_msg_start_nested(actions, | |
439 | OVS_SAMPLE_ATTR_ACTIONS); | |
440 | for (;;) { | |
441 | int retval; | |
442 | ||
443 | s += strspn(s, delimiters); | |
444 | if (s[n] == ')') { | |
445 | break; | |
446 | } | |
447 | ||
448 | retval = parse_odp_action(s + n, port_names, actions); | |
449 | if (retval < 0) { | |
450 | return retval; | |
451 | } | |
452 | n += retval; | |
453 | ||
454 | } | |
455 | nl_msg_end_nested(actions, actions_ofs); | |
456 | nl_msg_end_nested(actions, sample_ofs); | |
457 | ||
458 | return s[n + 1] == ')' ? n + 2 : -EINVAL; | |
459 | } | |
460 | } | |
461 | ||
462 | return -EINVAL; | |
463 | } | |
464 | ||
465 | /* Parses the string representation of datapath actions, in the format output | |
466 | * by format_odp_action(). Returns 0 if successful, otherwise a positive errno | |
467 | * value. On success, the ODP actions are appended to 'actions' as a series of | |
468 | * Netlink attributes. On failure, no data is appended to 'actions'. Either | |
469 | * way, 'actions''s data might be reallocated. */ | |
470 | int | |
471 | odp_actions_from_string(const char *s, const struct shash *port_names, | |
472 | struct ofpbuf *actions) | |
473 | { | |
474 | size_t old_size; | |
475 | ||
476 | if (!strcasecmp(s, "drop")) { | |
477 | return 0; | |
478 | } | |
479 | ||
480 | old_size = actions->size; | |
481 | for (;;) { | |
482 | int retval; | |
483 | ||
484 | s += strspn(s, delimiters); | |
485 | if (!*s) { | |
486 | return 0; | |
487 | } | |
488 | ||
489 | retval = parse_odp_action(s, port_names, actions); | |
490 | if (retval < 0 || !strchr(delimiters, s[retval])) { | |
491 | actions->size = old_size; | |
492 | return -retval; | |
493 | } | |
494 | s += retval; | |
495 | } | |
496 | ||
497 | return 0; | |
498 | } | |
14608a15 | 499 | \f |
36956a7d | 500 | /* Returns the correct length of the payload for a flow key attribute of the |
fea393b1 BP |
501 | * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload |
502 | * is variable length. */ | |
36956a7d BP |
503 | static int |
504 | odp_flow_key_attr_len(uint16_t type) | |
505 | { | |
df2c07f4 | 506 | if (type > OVS_KEY_ATTR_MAX) { |
36956a7d BP |
507 | return -1; |
508 | } | |
509 | ||
09ded0ad | 510 | switch ((enum ovs_key_attr) type) { |
fea393b1 | 511 | case OVS_KEY_ATTR_ENCAP: return -2; |
abff858b | 512 | case OVS_KEY_ATTR_PRIORITY: return 4; |
df2c07f4 JP |
513 | case OVS_KEY_ATTR_TUN_ID: return 8; |
514 | case OVS_KEY_ATTR_IN_PORT: return 4; | |
515 | case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet); | |
fea393b1 | 516 | case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16); |
df2c07f4 JP |
517 | case OVS_KEY_ATTR_ETHERTYPE: return 2; |
518 | case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4); | |
519 | case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6); | |
520 | case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp); | |
521 | case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp); | |
522 | case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp); | |
523 | case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6); | |
524 | case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp); | |
525 | case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd); | |
526 | ||
527 | case OVS_KEY_ATTR_UNSPEC: | |
528 | case __OVS_KEY_ATTR_MAX: | |
36956a7d BP |
529 | return -1; |
530 | } | |
531 | ||
532 | return -1; | |
533 | } | |
534 | ||
36956a7d BP |
535 | static void |
536 | format_generic_odp_key(const struct nlattr *a, struct ds *ds) | |
537 | { | |
538 | size_t len = nl_attr_get_size(a); | |
36956a7d BP |
539 | if (len) { |
540 | const uint8_t *unspec; | |
541 | unsigned int i; | |
542 | ||
543 | unspec = nl_attr_get(a); | |
544 | for (i = 0; i < len; i++) { | |
545 | ds_put_char(ds, i ? ' ': '('); | |
546 | ds_put_format(ds, "%02x", unspec[i]); | |
547 | } | |
548 | ds_put_char(ds, ')'); | |
549 | } | |
550 | } | |
551 | ||
7257b535 BP |
552 | static const char * |
553 | ovs_frag_type_to_string(enum ovs_frag_type type) | |
554 | { | |
555 | switch (type) { | |
556 | case OVS_FRAG_TYPE_NONE: | |
557 | return "no"; | |
558 | case OVS_FRAG_TYPE_FIRST: | |
559 | return "first"; | |
560 | case OVS_FRAG_TYPE_LATER: | |
561 | return "later"; | |
562 | case __OVS_FRAG_TYPE_MAX: | |
563 | default: | |
564 | return "<error>"; | |
565 | } | |
566 | } | |
567 | ||
36956a7d BP |
568 | static void |
569 | format_odp_key_attr(const struct nlattr *a, struct ds *ds) | |
570 | { | |
df2c07f4 | 571 | const struct ovs_key_ethernet *eth_key; |
df2c07f4 JP |
572 | const struct ovs_key_ipv4 *ipv4_key; |
573 | const struct ovs_key_ipv6 *ipv6_key; | |
574 | const struct ovs_key_tcp *tcp_key; | |
575 | const struct ovs_key_udp *udp_key; | |
576 | const struct ovs_key_icmp *icmp_key; | |
577 | const struct ovs_key_icmpv6 *icmpv6_key; | |
578 | const struct ovs_key_arp *arp_key; | |
579 | const struct ovs_key_nd *nd_key; | |
7a8e9ed2 | 580 | enum ovs_key_attr attr = nl_attr_type(a); |
fea393b1 | 581 | int expected_len; |
36956a7d | 582 | |
b3b5bf02 | 583 | ds_put_cstr(ds, ovs_key_attr_to_string(attr)); |
fea393b1 BP |
584 | expected_len = odp_flow_key_attr_len(nl_attr_type(a)); |
585 | if (expected_len != -2 && nl_attr_get_size(a) != expected_len) { | |
b3b5bf02 | 586 | ds_put_format(ds, "(bad length %zu, expected %d)", |
36956a7d BP |
587 | nl_attr_get_size(a), |
588 | odp_flow_key_attr_len(nl_attr_type(a))); | |
589 | format_generic_odp_key(a, ds); | |
590 | return; | |
591 | } | |
592 | ||
7a8e9ed2 | 593 | switch (attr) { |
fea393b1 BP |
594 | case OVS_KEY_ATTR_ENCAP: |
595 | ds_put_cstr(ds, "("); | |
596 | if (nl_attr_get_size(a)) { | |
597 | odp_flow_key_format(nl_attr_get(a), nl_attr_get_size(a), ds); | |
598 | } | |
599 | ds_put_char(ds, ')'); | |
600 | break; | |
601 | ||
abff858b | 602 | case OVS_KEY_ATTR_PRIORITY: |
b3b5bf02 | 603 | ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a)); |
abff858b PS |
604 | break; |
605 | ||
df2c07f4 | 606 | case OVS_KEY_ATTR_TUN_ID: |
b3b5bf02 | 607 | ds_put_format(ds, "(%#"PRIx64")", ntohll(nl_attr_get_be64(a))); |
36956a7d BP |
608 | break; |
609 | ||
df2c07f4 | 610 | case OVS_KEY_ATTR_IN_PORT: |
b3b5bf02 | 611 | ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a)); |
36956a7d BP |
612 | break; |
613 | ||
df2c07f4 | 614 | case OVS_KEY_ATTR_ETHERNET: |
36956a7d | 615 | eth_key = nl_attr_get(a); |
b3b5bf02 | 616 | ds_put_format(ds, "(src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT")", |
36956a7d BP |
617 | ETH_ADDR_ARGS(eth_key->eth_src), |
618 | ETH_ADDR_ARGS(eth_key->eth_dst)); | |
619 | break; | |
620 | ||
fea393b1 | 621 | case OVS_KEY_ATTR_VLAN: |
8ddc056d BP |
622 | ds_put_char(ds, '('); |
623 | format_vlan_tci(ds, nl_attr_get_be16(a)); | |
624 | ds_put_char(ds, ')'); | |
36956a7d BP |
625 | break; |
626 | ||
df2c07f4 | 627 | case OVS_KEY_ATTR_ETHERTYPE: |
b3b5bf02 | 628 | ds_put_format(ds, "(0x%04"PRIx16")", |
36956a7d BP |
629 | ntohs(nl_attr_get_be16(a))); |
630 | break; | |
631 | ||
df2c07f4 | 632 | case OVS_KEY_ATTR_IPV4: |
36956a7d | 633 | ipv4_key = nl_attr_get(a); |
b3b5bf02 | 634 | ds_put_format(ds, "(src="IP_FMT",dst="IP_FMT",proto=%"PRIu8 |
a61680c6 | 635 | ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s)", |
36956a7d BP |
636 | IP_ARGS(&ipv4_key->ipv4_src), |
637 | IP_ARGS(&ipv4_key->ipv4_dst), | |
7257b535 | 638 | ipv4_key->ipv4_proto, ipv4_key->ipv4_tos, |
a61680c6 | 639 | ipv4_key->ipv4_ttl, |
7257b535 | 640 | ovs_frag_type_to_string(ipv4_key->ipv4_frag)); |
36956a7d BP |
641 | break; |
642 | ||
df2c07f4 | 643 | case OVS_KEY_ATTR_IPV6: { |
d31f1109 JP |
644 | char src_str[INET6_ADDRSTRLEN]; |
645 | char dst_str[INET6_ADDRSTRLEN]; | |
646 | ||
647 | ipv6_key = nl_attr_get(a); | |
648 | inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str); | |
649 | inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str); | |
650 | ||
b3b5bf02 | 651 | ds_put_format(ds, "(src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8 |
60258dcb | 652 | ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s)", |
fa8223b7 | 653 | src_str, dst_str, ntohl(ipv6_key->ipv6_label), |
60258dcb | 654 | ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass, |
a61680c6 | 655 | ipv6_key->ipv6_hlimit, |
7257b535 | 656 | ovs_frag_type_to_string(ipv6_key->ipv6_frag)); |
d31f1109 JP |
657 | break; |
658 | } | |
659 | ||
df2c07f4 | 660 | case OVS_KEY_ATTR_TCP: |
36956a7d | 661 | tcp_key = nl_attr_get(a); |
b3b5bf02 | 662 | ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")", |
36956a7d BP |
663 | ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst)); |
664 | break; | |
665 | ||
df2c07f4 | 666 | case OVS_KEY_ATTR_UDP: |
36956a7d | 667 | udp_key = nl_attr_get(a); |
b3b5bf02 | 668 | ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")", |
36956a7d BP |
669 | ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst)); |
670 | break; | |
671 | ||
df2c07f4 | 672 | case OVS_KEY_ATTR_ICMP: |
36956a7d | 673 | icmp_key = nl_attr_get(a); |
b3b5bf02 | 674 | ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")", |
36956a7d BP |
675 | icmp_key->icmp_type, icmp_key->icmp_code); |
676 | break; | |
677 | ||
df2c07f4 | 678 | case OVS_KEY_ATTR_ICMPV6: |
d31f1109 | 679 | icmpv6_key = nl_attr_get(a); |
b3b5bf02 | 680 | ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")", |
d31f1109 JP |
681 | icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code); |
682 | break; | |
683 | ||
df2c07f4 | 684 | case OVS_KEY_ATTR_ARP: |
36956a7d | 685 | arp_key = nl_attr_get(a); |
b3b5bf02 | 686 | ds_put_format(ds, "(sip="IP_FMT",tip="IP_FMT",op=%"PRIu16"," |
bad68a99 | 687 | "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT")", |
36956a7d | 688 | IP_ARGS(&arp_key->arp_sip), IP_ARGS(&arp_key->arp_tip), |
bad68a99 JP |
689 | ntohs(arp_key->arp_op), ETH_ADDR_ARGS(arp_key->arp_sha), |
690 | ETH_ADDR_ARGS(arp_key->arp_tha)); | |
36956a7d BP |
691 | break; |
692 | ||
df2c07f4 | 693 | case OVS_KEY_ATTR_ND: { |
685a51a5 JP |
694 | char target[INET6_ADDRSTRLEN]; |
695 | ||
696 | nd_key = nl_attr_get(a); | |
697 | inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target); | |
698 | ||
b3b5bf02 | 699 | ds_put_format(ds, "(target=%s", target); |
685a51a5 JP |
700 | if (!eth_addr_is_zero(nd_key->nd_sll)) { |
701 | ds_put_format(ds, ",sll="ETH_ADDR_FMT, | |
702 | ETH_ADDR_ARGS(nd_key->nd_sll)); | |
703 | } | |
704 | if (!eth_addr_is_zero(nd_key->nd_tll)) { | |
705 | ds_put_format(ds, ",tll="ETH_ADDR_FMT, | |
706 | ETH_ADDR_ARGS(nd_key->nd_tll)); | |
707 | } | |
708 | ds_put_char(ds, ')'); | |
709 | break; | |
710 | } | |
711 | ||
7a8e9ed2 BP |
712 | case OVS_KEY_ATTR_UNSPEC: |
713 | case __OVS_KEY_ATTR_MAX: | |
36956a7d BP |
714 | default: |
715 | format_generic_odp_key(a, ds); | |
716 | break; | |
717 | } | |
718 | } | |
719 | ||
720 | /* Appends to 'ds' a string representation of the 'key_len' bytes of | |
df2c07f4 | 721 | * OVS_KEY_ATTR_* attributes in 'key'. */ |
14608a15 | 722 | void |
36956a7d | 723 | odp_flow_key_format(const struct nlattr *key, size_t key_len, struct ds *ds) |
14608a15 | 724 | { |
36956a7d BP |
725 | if (key_len) { |
726 | const struct nlattr *a; | |
727 | unsigned int left; | |
728 | ||
729 | NL_ATTR_FOR_EACH (a, left, key, key_len) { | |
730 | if (a != key) { | |
731 | ds_put_char(ds, ','); | |
732 | } | |
733 | format_odp_key_attr(a, ds); | |
734 | } | |
735 | if (left) { | |
3a8cfc50 BP |
736 | int i; |
737 | ||
36956a7d BP |
738 | if (left == key_len) { |
739 | ds_put_cstr(ds, "<empty>"); | |
740 | } | |
3a8cfc50 BP |
741 | ds_put_format(ds, ",***%u leftover bytes*** (", left); |
742 | for (i = 0; i < left; i++) { | |
743 | ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]); | |
744 | } | |
745 | ds_put_char(ds, ')'); | |
36956a7d BP |
746 | } |
747 | } else { | |
748 | ds_put_cstr(ds, "<empty>"); | |
749 | } | |
14608a15 | 750 | } |
064af421 | 751 | |
3bffc610 BP |
752 | static int |
753 | put_nd_key(int n, const char *nd_target_s, | |
754 | const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *key) | |
755 | { | |
df2c07f4 | 756 | struct ovs_key_nd nd_key; |
3bffc610 BP |
757 | |
758 | memset(&nd_key, 0, sizeof nd_key); | |
759 | if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) { | |
760 | return -EINVAL; | |
761 | } | |
762 | if (nd_sll) { | |
763 | memcpy(nd_key.nd_sll, nd_sll, ETH_ADDR_LEN); | |
764 | } | |
765 | if (nd_tll) { | |
766 | memcpy(nd_key.nd_tll, nd_tll, ETH_ADDR_LEN); | |
767 | } | |
df2c07f4 | 768 | nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, &nd_key, sizeof nd_key); |
3bffc610 BP |
769 | return n; |
770 | } | |
771 | ||
7257b535 BP |
772 | static bool |
773 | ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type) | |
774 | { | |
775 | if (!strcasecmp(s, "no")) { | |
776 | *type = OVS_FRAG_TYPE_NONE; | |
777 | } else if (!strcasecmp(s, "first")) { | |
778 | *type = OVS_FRAG_TYPE_FIRST; | |
779 | } else if (!strcasecmp(s, "later")) { | |
780 | *type = OVS_FRAG_TYPE_LATER; | |
781 | } else { | |
782 | return false; | |
783 | } | |
784 | return true; | |
785 | } | |
786 | ||
3bffc610 | 787 | static int |
b2a60db8 BP |
788 | parse_odp_key_attr(const char *s, const struct shash *port_names, |
789 | struct ofpbuf *key) | |
3bffc610 BP |
790 | { |
791 | /* Many of the sscanf calls in this function use oversized destination | |
792 | * fields because some sscanf() implementations truncate the range of %i | |
793 | * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a | |
794 | * value of 0x7fff. The other alternatives are to allow only a single | |
795 | * radix (e.g. decimal or hexadecimal) or to write more sophisticated | |
796 | * parsers. | |
797 | * | |
798 | * The tun_id parser has to use an alternative approach because there is no | |
799 | * type larger than 64 bits. */ | |
800 | ||
abff858b PS |
801 | { |
802 | unsigned long long int priority; | |
803 | int n = -1; | |
804 | ||
805 | if (sscanf(s, "priority(%lli)%n", &priority, &n) > 0 && n > 0) { | |
806 | nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority); | |
807 | return n; | |
808 | } | |
809 | } | |
810 | ||
3bffc610 BP |
811 | { |
812 | char tun_id_s[32]; | |
813 | int n = -1; | |
814 | ||
815 | if (sscanf(s, "tun_id(%31[x0123456789abcdefABCDEF])%n", | |
816 | tun_id_s, &n) > 0 && n > 0) { | |
817 | uint64_t tun_id = strtoull(tun_id_s, NULL, 0); | |
df2c07f4 | 818 | nl_msg_put_be64(key, OVS_KEY_ATTR_TUN_ID, htonll(tun_id)); |
3bffc610 BP |
819 | return n; |
820 | } | |
821 | } | |
822 | ||
823 | { | |
824 | unsigned long long int in_port; | |
825 | int n = -1; | |
826 | ||
827 | if (sscanf(s, "in_port(%lli)%n", &in_port, &n) > 0 && n > 0) { | |
df2c07f4 | 828 | nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port); |
3bffc610 BP |
829 | return n; |
830 | } | |
831 | } | |
832 | ||
b2a60db8 BP |
833 | if (port_names && !strncmp(s, "in_port(", 8)) { |
834 | const char *name; | |
835 | const struct shash_node *node; | |
836 | int name_len; | |
837 | ||
838 | name = s + 8; | |
839 | name_len = strcspn(s, ")"); | |
840 | node = shash_find_len(port_names, name, name_len); | |
841 | if (node) { | |
842 | nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, (uintptr_t) node->data); | |
843 | return 8 + name_len + 1; | |
844 | } | |
845 | } | |
846 | ||
3bffc610 | 847 | { |
df2c07f4 | 848 | struct ovs_key_ethernet eth_key; |
3bffc610 BP |
849 | int n = -1; |
850 | ||
851 | if (sscanf(s, | |
852 | "eth(src="ETH_ADDR_SCAN_FMT",dst="ETH_ADDR_SCAN_FMT")%n", | |
853 | ETH_ADDR_SCAN_ARGS(eth_key.eth_src), | |
854 | ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n) > 0 && n > 0) { | |
df2c07f4 | 855 | nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET, |
3bffc610 BP |
856 | ð_key, sizeof eth_key); |
857 | return n; | |
858 | } | |
859 | } | |
860 | ||
861 | { | |
3bffc610 BP |
862 | uint16_t vid; |
863 | int pcp; | |
8ddc056d | 864 | int cfi; |
3bffc610 BP |
865 | int n = -1; |
866 | ||
fea393b1 BP |
867 | if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i)%n", &vid, &pcp, &n) > 0 |
868 | && n > 0)) { | |
869 | nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN, | |
870 | htons((vid << VLAN_VID_SHIFT) | | |
8ddc056d BP |
871 | (pcp << VLAN_PCP_SHIFT) | |
872 | VLAN_CFI)); | |
873 | return n; | |
874 | } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i,cfi=%i)%n", | |
875 | &vid, &pcp, &cfi, &n) > 0 | |
876 | && n > 0)) { | |
877 | nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN, | |
878 | htons((vid << VLAN_VID_SHIFT) | | |
879 | (pcp << VLAN_PCP_SHIFT) | | |
880 | (cfi ? VLAN_CFI : 0))); | |
3bffc610 BP |
881 | return n; |
882 | } | |
883 | } | |
884 | ||
885 | { | |
fac2e516 | 886 | int eth_type; |
3bffc610 BP |
887 | int n = -1; |
888 | ||
fac2e516 | 889 | if (sscanf(s, "eth_type(%i)%n", ð_type, &n) > 0 && n > 0) { |
df2c07f4 | 890 | nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type)); |
3bffc610 BP |
891 | return n; |
892 | } | |
893 | } | |
894 | ||
895 | { | |
896 | ovs_be32 ipv4_src; | |
897 | ovs_be32 ipv4_dst; | |
898 | int ipv4_proto; | |
899 | int ipv4_tos; | |
a61680c6 | 900 | int ipv4_ttl; |
7257b535 BP |
901 | char frag[8]; |
902 | enum ovs_frag_type ipv4_frag; | |
3bffc610 BP |
903 | int n = -1; |
904 | ||
905 | if (sscanf(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT"," | |
a61680c6 | 906 | "proto=%i,tos=%i,ttl=%i,frag=%7[a-z])%n", |
7257b535 | 907 | IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_dst), |
a61680c6 | 908 | &ipv4_proto, &ipv4_tos, &ipv4_ttl, frag, &n) > 0 |
7257b535 BP |
909 | && n > 0 |
910 | && ovs_frag_type_from_string(frag, &ipv4_frag)) { | |
df2c07f4 | 911 | struct ovs_key_ipv4 ipv4_key; |
3bffc610 | 912 | |
3bffc610 BP |
913 | ipv4_key.ipv4_src = ipv4_src; |
914 | ipv4_key.ipv4_dst = ipv4_dst; | |
915 | ipv4_key.ipv4_proto = ipv4_proto; | |
916 | ipv4_key.ipv4_tos = ipv4_tos; | |
a61680c6 | 917 | ipv4_key.ipv4_ttl = ipv4_ttl; |
7257b535 | 918 | ipv4_key.ipv4_frag = ipv4_frag; |
df2c07f4 | 919 | nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4, |
3bffc610 BP |
920 | &ipv4_key, sizeof ipv4_key); |
921 | return n; | |
922 | } | |
923 | } | |
924 | ||
925 | { | |
926 | char ipv6_src_s[IPV6_SCAN_LEN + 1]; | |
927 | char ipv6_dst_s[IPV6_SCAN_LEN + 1]; | |
fa8223b7 | 928 | int ipv6_label; |
3bffc610 | 929 | int ipv6_proto; |
60258dcb | 930 | int ipv6_tclass; |
a61680c6 | 931 | int ipv6_hlimit; |
7257b535 BP |
932 | char frag[8]; |
933 | enum ovs_frag_type ipv6_frag; | |
3bffc610 BP |
934 | int n = -1; |
935 | ||
936 | if (sscanf(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT"," | |
60258dcb | 937 | "label=%i,proto=%i,tclass=%i,hlimit=%i,frag=%7[a-z])%n", |
fa8223b7 | 938 | ipv6_src_s, ipv6_dst_s, &ipv6_label, |
60258dcb | 939 | &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n) > 0 |
7257b535 BP |
940 | && n > 0 |
941 | && ovs_frag_type_from_string(frag, &ipv6_frag)) { | |
df2c07f4 | 942 | struct ovs_key_ipv6 ipv6_key; |
3bffc610 | 943 | |
3bffc610 BP |
944 | if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 || |
945 | inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) { | |
946 | return -EINVAL; | |
947 | } | |
fa8223b7 | 948 | ipv6_key.ipv6_label = htonl(ipv6_label); |
3bffc610 | 949 | ipv6_key.ipv6_proto = ipv6_proto; |
60258dcb | 950 | ipv6_key.ipv6_tclass = ipv6_tclass; |
a61680c6 | 951 | ipv6_key.ipv6_hlimit = ipv6_hlimit; |
7257b535 | 952 | ipv6_key.ipv6_frag = ipv6_frag; |
df2c07f4 | 953 | nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6, |
3bffc610 BP |
954 | &ipv6_key, sizeof ipv6_key); |
955 | return n; | |
956 | } | |
957 | } | |
958 | ||
959 | { | |
960 | int tcp_src; | |
961 | int tcp_dst; | |
962 | int n = -1; | |
963 | ||
964 | if (sscanf(s, "tcp(src=%i,dst=%i)%n",&tcp_src, &tcp_dst, &n) > 0 | |
965 | && n > 0) { | |
df2c07f4 | 966 | struct ovs_key_tcp tcp_key; |
3bffc610 BP |
967 | |
968 | tcp_key.tcp_src = htons(tcp_src); | |
969 | tcp_key.tcp_dst = htons(tcp_dst); | |
df2c07f4 | 970 | nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key); |
3bffc610 BP |
971 | return n; |
972 | } | |
973 | } | |
974 | ||
975 | { | |
976 | int udp_src; | |
977 | int udp_dst; | |
978 | int n = -1; | |
979 | ||
980 | if (sscanf(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n) > 0 | |
981 | && n > 0) { | |
df2c07f4 | 982 | struct ovs_key_udp udp_key; |
3bffc610 BP |
983 | |
984 | udp_key.udp_src = htons(udp_src); | |
985 | udp_key.udp_dst = htons(udp_dst); | |
df2c07f4 | 986 | nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key); |
3bffc610 BP |
987 | return n; |
988 | } | |
989 | } | |
990 | ||
991 | { | |
992 | int icmp_type; | |
993 | int icmp_code; | |
994 | int n = -1; | |
995 | ||
996 | if (sscanf(s, "icmp(type=%i,code=%i)%n", | |
997 | &icmp_type, &icmp_code, &n) > 0 | |
998 | && n > 0) { | |
df2c07f4 | 999 | struct ovs_key_icmp icmp_key; |
3bffc610 BP |
1000 | |
1001 | icmp_key.icmp_type = icmp_type; | |
1002 | icmp_key.icmp_code = icmp_code; | |
df2c07f4 | 1003 | nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP, |
3bffc610 BP |
1004 | &icmp_key, sizeof icmp_key); |
1005 | return n; | |
1006 | } | |
1007 | } | |
1008 | ||
1009 | { | |
df2c07f4 | 1010 | struct ovs_key_icmpv6 icmpv6_key; |
3bffc610 BP |
1011 | int n = -1; |
1012 | ||
1013 | if (sscanf(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n", | |
1014 | &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,&n) > 0 | |
1015 | && n > 0) { | |
df2c07f4 | 1016 | nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6, |
3bffc610 BP |
1017 | &icmpv6_key, sizeof icmpv6_key); |
1018 | return n; | |
1019 | } | |
1020 | } | |
1021 | ||
1022 | { | |
1023 | ovs_be32 arp_sip; | |
1024 | ovs_be32 arp_tip; | |
1025 | int arp_op; | |
1026 | uint8_t arp_sha[ETH_ADDR_LEN]; | |
1027 | uint8_t arp_tha[ETH_ADDR_LEN]; | |
1028 | int n = -1; | |
1029 | ||
1030 | if (sscanf(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT"," | |
1031 | "op=%i,sha="ETH_ADDR_SCAN_FMT",tha="ETH_ADDR_SCAN_FMT")%n", | |
1032 | IP_SCAN_ARGS(&arp_sip), | |
1033 | IP_SCAN_ARGS(&arp_tip), | |
1034 | &arp_op, | |
1035 | ETH_ADDR_SCAN_ARGS(arp_sha), | |
1036 | ETH_ADDR_SCAN_ARGS(arp_tha), &n) > 0 && n > 0) { | |
df2c07f4 | 1037 | struct ovs_key_arp arp_key; |
3bffc610 BP |
1038 | |
1039 | memset(&arp_key, 0, sizeof arp_key); | |
1040 | arp_key.arp_sip = arp_sip; | |
1041 | arp_key.arp_tip = arp_tip; | |
1042 | arp_key.arp_op = htons(arp_op); | |
1043 | memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN); | |
1044 | memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN); | |
df2c07f4 | 1045 | nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key); |
3bffc610 BP |
1046 | return n; |
1047 | } | |
1048 | } | |
1049 | ||
1050 | { | |
1051 | char nd_target_s[IPV6_SCAN_LEN + 1]; | |
1052 | uint8_t nd_sll[ETH_ADDR_LEN]; | |
1053 | uint8_t nd_tll[ETH_ADDR_LEN]; | |
1054 | int n = -1; | |
1055 | ||
1056 | if (sscanf(s, "nd(target="IPV6_SCAN_FMT")%n", | |
1057 | nd_target_s, &n) > 0 && n > 0) { | |
1058 | return put_nd_key(n, nd_target_s, NULL, NULL, key); | |
1059 | } | |
1060 | if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT")%n", | |
1061 | nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n) > 0 | |
1062 | && n > 0) { | |
1063 | return put_nd_key(n, nd_target_s, nd_sll, NULL, key); | |
1064 | } | |
1065 | if (sscanf(s, "nd(target="IPV6_SCAN_FMT",tll="ETH_ADDR_SCAN_FMT")%n", | |
1066 | nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0 | |
1067 | && n > 0) { | |
1068 | return put_nd_key(n, nd_target_s, NULL, nd_tll, key); | |
1069 | } | |
1070 | if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT"," | |
1071 | "tll="ETH_ADDR_SCAN_FMT")%n", | |
1072 | nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), | |
1073 | ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0 | |
1074 | && n > 0) { | |
1075 | return put_nd_key(n, nd_target_s, nd_sll, nd_tll, key); | |
1076 | } | |
1077 | } | |
1078 | ||
fea393b1 BP |
1079 | if (!strncmp(s, "encap(", 6)) { |
1080 | const char *start = s; | |
1081 | size_t encap; | |
1082 | ||
1083 | encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP); | |
1084 | ||
1085 | s += 6; | |
1086 | for (;;) { | |
1087 | int retval; | |
1088 | ||
1089 | s += strspn(s, ", \t\r\n"); | |
1090 | if (!*s) { | |
1091 | return -EINVAL; | |
1092 | } else if (*s == ')') { | |
1093 | break; | |
1094 | } | |
1095 | ||
becffb86 | 1096 | retval = parse_odp_key_attr(s, port_names, key); |
fea393b1 BP |
1097 | if (retval < 0) { |
1098 | return retval; | |
1099 | } | |
1100 | s += retval; | |
1101 | } | |
1102 | s++; | |
1103 | ||
1104 | nl_msg_end_nested(key, encap); | |
1105 | ||
1106 | return s - start; | |
1107 | } | |
1108 | ||
3bffc610 BP |
1109 | return -EINVAL; |
1110 | } | |
1111 | ||
df2c07f4 JP |
1112 | /* Parses the string representation of a datapath flow key, in the |
1113 | * format output by odp_flow_key_format(). Returns 0 if successful, | |
1114 | * otherwise a positive errno value. On success, the flow key is | |
1115 | * appended to 'key' as a series of Netlink attributes. On failure, no | |
1116 | * data is appended to 'key'. Either way, 'key''s data might be | |
1117 | * reallocated. | |
3bffc610 | 1118 | * |
b2a60db8 BP |
1119 | * If 'port_names' is nonnull, it points to an shash that maps from a port name |
1120 | * to a port number cast to void *. (Port names may be used instead of port | |
1121 | * numbers in in_port.) | |
1122 | * | |
3bffc610 BP |
1123 | * On success, the attributes appended to 'key' are individually syntactically |
1124 | * valid, but they may not be valid as a sequence. 'key' might, for example, | |
34118cae | 1125 | * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */ |
3bffc610 | 1126 | int |
b2a60db8 BP |
1127 | odp_flow_key_from_string(const char *s, const struct shash *port_names, |
1128 | struct ofpbuf *key) | |
3bffc610 BP |
1129 | { |
1130 | const size_t old_size = key->size; | |
1131 | for (;;) { | |
1132 | int retval; | |
1133 | ||
7202cbe5 | 1134 | s += strspn(s, delimiters); |
3bffc610 BP |
1135 | if (!*s) { |
1136 | return 0; | |
1137 | } | |
1138 | ||
b2a60db8 | 1139 | retval = parse_odp_key_attr(s, port_names, key); |
3bffc610 BP |
1140 | if (retval < 0) { |
1141 | key->size = old_size; | |
1142 | return -retval; | |
1143 | } | |
1144 | s += retval; | |
1145 | } | |
1146 | ||
1147 | return 0; | |
1148 | } | |
1149 | ||
7257b535 | 1150 | static uint8_t |
c4f2731d | 1151 | ovs_to_odp_frag(uint8_t nw_frag) |
7257b535 | 1152 | { |
c4f2731d PS |
1153 | return (nw_frag == 0 ? OVS_FRAG_TYPE_NONE |
1154 | : nw_frag == FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST | |
1155 | : OVS_FRAG_TYPE_LATER); | |
7257b535 BP |
1156 | } |
1157 | ||
df2c07f4 | 1158 | /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'. */ |
14608a15 | 1159 | void |
36956a7d | 1160 | odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow) |
14608a15 | 1161 | { |
df2c07f4 | 1162 | struct ovs_key_ethernet *eth_key; |
fea393b1 | 1163 | size_t encap; |
36956a7d | 1164 | |
deedf7e7 BP |
1165 | if (flow->skb_priority) { |
1166 | nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, flow->skb_priority); | |
abff858b PS |
1167 | } |
1168 | ||
36956a7d | 1169 | if (flow->tun_id != htonll(0)) { |
df2c07f4 | 1170 | nl_msg_put_be64(buf, OVS_KEY_ATTR_TUN_ID, flow->tun_id); |
36956a7d BP |
1171 | } |
1172 | ||
18886b60 BP |
1173 | if (flow->in_port != OFPP_NONE) { |
1174 | nl_msg_put_u32(buf, OVS_KEY_ATTR_IN_PORT, | |
1175 | ofp_port_to_odp_port(flow->in_port)); | |
1176 | } | |
36956a7d | 1177 | |
df2c07f4 | 1178 | eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET, |
36956a7d BP |
1179 | sizeof *eth_key); |
1180 | memcpy(eth_key->eth_src, flow->dl_src, ETH_ADDR_LEN); | |
1181 | memcpy(eth_key->eth_dst, flow->dl_dst, ETH_ADDR_LEN); | |
1182 | ||
8ddc056d | 1183 | if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) { |
fea393b1 | 1184 | nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN)); |
8ddc056d | 1185 | nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, flow->vlan_tci); |
fea393b1 | 1186 | encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP); |
8ddc056d BP |
1187 | if (flow->vlan_tci == htons(0)) { |
1188 | goto unencap; | |
1189 | } | |
fea393b1 BP |
1190 | } else { |
1191 | encap = 0; | |
36956a7d BP |
1192 | } |
1193 | ||
1194 | if (ntohs(flow->dl_type) < ETH_TYPE_MIN) { | |
fea393b1 | 1195 | goto unencap; |
36956a7d BP |
1196 | } |
1197 | ||
df2c07f4 | 1198 | nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, flow->dl_type); |
36956a7d BP |
1199 | |
1200 | if (flow->dl_type == htons(ETH_TYPE_IP)) { | |
df2c07f4 | 1201 | struct ovs_key_ipv4 *ipv4_key; |
36956a7d | 1202 | |
df2c07f4 | 1203 | ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4, |
36956a7d BP |
1204 | sizeof *ipv4_key); |
1205 | ipv4_key->ipv4_src = flow->nw_src; | |
1206 | ipv4_key->ipv4_dst = flow->nw_dst; | |
1207 | ipv4_key->ipv4_proto = flow->nw_proto; | |
eadef313 | 1208 | ipv4_key->ipv4_tos = flow->nw_tos; |
a61680c6 | 1209 | ipv4_key->ipv4_ttl = flow->nw_ttl; |
eadef313 | 1210 | ipv4_key->ipv4_frag = ovs_to_odp_frag(flow->nw_frag); |
d31f1109 | 1211 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { |
df2c07f4 | 1212 | struct ovs_key_ipv6 *ipv6_key; |
d31f1109 | 1213 | |
df2c07f4 | 1214 | ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6, |
d31f1109 JP |
1215 | sizeof *ipv6_key); |
1216 | memcpy(ipv6_key->ipv6_src, &flow->ipv6_src, sizeof ipv6_key->ipv6_src); | |
1217 | memcpy(ipv6_key->ipv6_dst, &flow->ipv6_dst, sizeof ipv6_key->ipv6_dst); | |
fa8223b7 | 1218 | ipv6_key->ipv6_label = flow->ipv6_label; |
d31f1109 | 1219 | ipv6_key->ipv6_proto = flow->nw_proto; |
eadef313 | 1220 | ipv6_key->ipv6_tclass = flow->nw_tos; |
a61680c6 | 1221 | ipv6_key->ipv6_hlimit = flow->nw_ttl; |
eadef313 | 1222 | ipv6_key->ipv6_frag = ovs_to_odp_frag(flow->nw_frag); |
d31f1109 | 1223 | } else if (flow->dl_type == htons(ETH_TYPE_ARP)) { |
df2c07f4 | 1224 | struct ovs_key_arp *arp_key; |
d31f1109 | 1225 | |
df2c07f4 | 1226 | arp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ARP, |
d31f1109 | 1227 | sizeof *arp_key); |
535d6987 | 1228 | memset(arp_key, 0, sizeof *arp_key); |
d31f1109 JP |
1229 | arp_key->arp_sip = flow->nw_src; |
1230 | arp_key->arp_tip = flow->nw_dst; | |
1231 | arp_key->arp_op = htons(flow->nw_proto); | |
1232 | memcpy(arp_key->arp_sha, flow->arp_sha, ETH_ADDR_LEN); | |
1233 | memcpy(arp_key->arp_tha, flow->arp_tha, ETH_ADDR_LEN); | |
1234 | } | |
b53055f4 | 1235 | |
7257b535 BP |
1236 | if ((flow->dl_type == htons(ETH_TYPE_IP) |
1237 | || flow->dl_type == htons(ETH_TYPE_IPV6)) | |
eadef313 | 1238 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
36956a7d | 1239 | |
6767a2cc | 1240 | if (flow->nw_proto == IPPROTO_TCP) { |
df2c07f4 | 1241 | struct ovs_key_tcp *tcp_key; |
36956a7d | 1242 | |
df2c07f4 | 1243 | tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP, |
36956a7d BP |
1244 | sizeof *tcp_key); |
1245 | tcp_key->tcp_src = flow->tp_src; | |
1246 | tcp_key->tcp_dst = flow->tp_dst; | |
6767a2cc | 1247 | } else if (flow->nw_proto == IPPROTO_UDP) { |
df2c07f4 | 1248 | struct ovs_key_udp *udp_key; |
36956a7d | 1249 | |
df2c07f4 | 1250 | udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP, |
36956a7d BP |
1251 | sizeof *udp_key); |
1252 | udp_key->udp_src = flow->tp_src; | |
1253 | udp_key->udp_dst = flow->tp_dst; | |
d31f1109 JP |
1254 | } else if (flow->dl_type == htons(ETH_TYPE_IP) |
1255 | && flow->nw_proto == IPPROTO_ICMP) { | |
df2c07f4 | 1256 | struct ovs_key_icmp *icmp_key; |
36956a7d | 1257 | |
df2c07f4 | 1258 | icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP, |
36956a7d BP |
1259 | sizeof *icmp_key); |
1260 | icmp_key->icmp_type = ntohs(flow->tp_src); | |
1261 | icmp_key->icmp_code = ntohs(flow->tp_dst); | |
d31f1109 JP |
1262 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6) |
1263 | && flow->nw_proto == IPPROTO_ICMPV6) { | |
df2c07f4 | 1264 | struct ovs_key_icmpv6 *icmpv6_key; |
d31f1109 | 1265 | |
df2c07f4 | 1266 | icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6, |
d31f1109 JP |
1267 | sizeof *icmpv6_key); |
1268 | icmpv6_key->icmpv6_type = ntohs(flow->tp_src); | |
1269 | icmpv6_key->icmpv6_code = ntohs(flow->tp_dst); | |
685a51a5 JP |
1270 | |
1271 | if (icmpv6_key->icmpv6_type == ND_NEIGHBOR_SOLICIT | |
1272 | || icmpv6_key->icmpv6_type == ND_NEIGHBOR_ADVERT) { | |
df2c07f4 | 1273 | struct ovs_key_nd *nd_key; |
685a51a5 | 1274 | |
df2c07f4 | 1275 | nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND, |
685a51a5 JP |
1276 | sizeof *nd_key); |
1277 | memcpy(nd_key->nd_target, &flow->nd_target, | |
1278 | sizeof nd_key->nd_target); | |
1279 | memcpy(nd_key->nd_sll, flow->arp_sha, ETH_ADDR_LEN); | |
1280 | memcpy(nd_key->nd_tll, flow->arp_tha, ETH_ADDR_LEN); | |
1281 | } | |
36956a7d | 1282 | } |
36956a7d | 1283 | } |
fea393b1 BP |
1284 | |
1285 | unencap: | |
1286 | if (encap) { | |
1287 | nl_msg_end_nested(buf, encap); | |
1288 | } | |
36956a7d BP |
1289 | } |
1290 | ||
b0f7b9b5 BP |
1291 | uint32_t |
1292 | odp_flow_key_hash(const struct nlattr *key, size_t key_len) | |
1293 | { | |
1294 | BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t))); | |
1295 | return hash_words((const uint32_t *) key, key_len / sizeof(uint32_t), 0); | |
1296 | } | |
1297 | ||
34118cae BP |
1298 | static void |
1299 | log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title, | |
b0f7b9b5 | 1300 | uint64_t attrs, int out_of_range_attr, |
34118cae BP |
1301 | const struct nlattr *key, size_t key_len) |
1302 | { | |
1303 | struct ds s; | |
1304 | int i; | |
1305 | ||
b0f7b9b5 | 1306 | if (VLOG_DROP_DBG(rl)) { |
34118cae BP |
1307 | return; |
1308 | } | |
1309 | ||
1310 | ds_init(&s); | |
b0f7b9b5 BP |
1311 | for (i = 0; i < 64; i++) { |
1312 | if (attrs & (UINT64_C(1) << i)) { | |
34118cae BP |
1313 | ds_put_format(&s, " %s", ovs_key_attr_to_string(i)); |
1314 | } | |
1315 | } | |
b0f7b9b5 BP |
1316 | if (out_of_range_attr) { |
1317 | ds_put_format(&s, " %d (and possibly others)", out_of_range_attr); | |
1318 | } | |
34118cae BP |
1319 | |
1320 | ds_put_cstr(&s, ": "); | |
1321 | odp_flow_key_format(key, key_len, &s); | |
1322 | ||
b0f7b9b5 | 1323 | VLOG_DBG("%s:%s", title, ds_cstr(&s)); |
34118cae BP |
1324 | ds_destroy(&s); |
1325 | } | |
1326 | ||
7257b535 | 1327 | static bool |
9e44d715 | 1328 | odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow) |
7257b535 | 1329 | { |
34118cae BP |
1330 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
1331 | ||
9e44d715 | 1332 | if (odp_frag > OVS_FRAG_TYPE_LATER) { |
b0f7b9b5 | 1333 | VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag); |
7257b535 BP |
1334 | return false; |
1335 | } | |
1336 | ||
7257b535 | 1337 | if (odp_frag != OVS_FRAG_TYPE_NONE) { |
eadef313 | 1338 | flow->nw_frag |= FLOW_NW_FRAG_ANY; |
7257b535 | 1339 | if (odp_frag == OVS_FRAG_TYPE_LATER) { |
eadef313 | 1340 | flow->nw_frag |= FLOW_NW_FRAG_LATER; |
7257b535 BP |
1341 | } |
1342 | } | |
1343 | return true; | |
1344 | } | |
1345 | ||
b0f7b9b5 | 1346 | static bool |
fea393b1 | 1347 | parse_flow_nlattrs(const struct nlattr *key, size_t key_len, |
b0f7b9b5 BP |
1348 | const struct nlattr *attrs[], uint64_t *present_attrsp, |
1349 | int *out_of_range_attrp) | |
36956a7d | 1350 | { |
b0f7b9b5 | 1351 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10); |
36956a7d | 1352 | const struct nlattr *nla; |
34118cae | 1353 | uint64_t present_attrs; |
36956a7d BP |
1354 | size_t left; |
1355 | ||
34118cae | 1356 | present_attrs = 0; |
b0f7b9b5 | 1357 | *out_of_range_attrp = 0; |
36956a7d | 1358 | NL_ATTR_FOR_EACH (nla, left, key, key_len) { |
34118cae BP |
1359 | uint16_t type = nl_attr_type(nla); |
1360 | size_t len = nl_attr_get_size(nla); | |
1361 | int expected_len = odp_flow_key_attr_len(type); | |
1362 | ||
b0f7b9b5 BP |
1363 | if (len != expected_len && expected_len >= 0) { |
1364 | VLOG_ERR_RL(&rl, "attribute %s has length %zu but should have " | |
1365 | "length %d", ovs_key_attr_to_string(type), | |
1366 | len, expected_len); | |
1367 | return false; | |
34118cae BP |
1368 | } |
1369 | ||
b0f7b9b5 BP |
1370 | if (type >= CHAR_BIT * sizeof present_attrs) { |
1371 | *out_of_range_attrp = type; | |
1372 | } else { | |
1373 | if (present_attrs & (UINT64_C(1) << type)) { | |
1374 | VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key", | |
1375 | ovs_key_attr_to_string(type)); | |
1376 | return false; | |
1377 | } | |
1378 | ||
1379 | present_attrs |= UINT64_C(1) << type; | |
1380 | attrs[type] = nla; | |
1381 | } | |
34118cae BP |
1382 | } |
1383 | if (left) { | |
1384 | VLOG_ERR_RL(&rl, "trailing garbage in flow key"); | |
b0f7b9b5 | 1385 | return false; |
34118cae BP |
1386 | } |
1387 | ||
fea393b1 | 1388 | *present_attrsp = present_attrs; |
b0f7b9b5 | 1389 | return true; |
fea393b1 BP |
1390 | } |
1391 | ||
b0f7b9b5 BP |
1392 | static enum odp_key_fitness |
1393 | check_expectations(uint64_t present_attrs, int out_of_range_attr, | |
1394 | uint64_t expected_attrs, | |
fea393b1 BP |
1395 | const struct nlattr *key, size_t key_len) |
1396 | { | |
1397 | uint64_t missing_attrs; | |
1398 | uint64_t extra_attrs; | |
1399 | ||
1400 | missing_attrs = expected_attrs & ~present_attrs; | |
1401 | if (missing_attrs) { | |
b0f7b9b5 BP |
1402 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10); |
1403 | log_odp_key_attributes(&rl, "expected but not present", | |
1404 | missing_attrs, 0, key, key_len); | |
1405 | return ODP_FIT_TOO_LITTLE; | |
fea393b1 BP |
1406 | } |
1407 | ||
1408 | extra_attrs = present_attrs & ~expected_attrs; | |
b0f7b9b5 BP |
1409 | if (extra_attrs || out_of_range_attr) { |
1410 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10); | |
1411 | log_odp_key_attributes(&rl, "present but not expected", | |
1412 | extra_attrs, out_of_range_attr, key, key_len); | |
1413 | return ODP_FIT_TOO_MUCH; | |
fea393b1 BP |
1414 | } |
1415 | ||
b0f7b9b5 | 1416 | return ODP_FIT_PERFECT; |
fea393b1 BP |
1417 | } |
1418 | ||
b0f7b9b5 BP |
1419 | static bool |
1420 | parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1], | |
1421 | uint64_t present_attrs, uint64_t *expected_attrs, | |
1422 | struct flow *flow) | |
fea393b1 BP |
1423 | { |
1424 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
36956a7d | 1425 | |
fea393b1 | 1426 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) { |
34118cae BP |
1427 | flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]); |
1428 | if (ntohs(flow->dl_type) < 1536) { | |
1429 | VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key", | |
1430 | ntohs(flow->dl_type)); | |
b0f7b9b5 | 1431 | return false; |
34118cae | 1432 | } |
b0f7b9b5 | 1433 | *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE; |
34118cae BP |
1434 | } else { |
1435 | flow->dl_type = htons(FLOW_DL_TYPE_NONE); | |
1436 | } | |
b0f7b9b5 BP |
1437 | return true; |
1438 | } | |
1439 | ||
1440 | static enum odp_key_fitness | |
1441 | parse_l3_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1], | |
1442 | uint64_t present_attrs, int out_of_range_attr, | |
1443 | uint64_t expected_attrs, struct flow *flow, | |
1444 | const struct nlattr *key, size_t key_len) | |
1445 | { | |
1446 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
36956a7d | 1447 | |
34118cae BP |
1448 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
1449 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4; | |
fea393b1 | 1450 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) { |
34118cae | 1451 | const struct ovs_key_ipv4 *ipv4_key; |
36956a7d | 1452 | |
34118cae | 1453 | ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]); |
36956a7d BP |
1454 | flow->nw_src = ipv4_key->ipv4_src; |
1455 | flow->nw_dst = ipv4_key->ipv4_dst; | |
1456 | flow->nw_proto = ipv4_key->ipv4_proto; | |
eadef313 | 1457 | flow->nw_tos = ipv4_key->ipv4_tos; |
a61680c6 | 1458 | flow->nw_ttl = ipv4_key->ipv4_ttl; |
9e44d715 | 1459 | if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) { |
b0f7b9b5 | 1460 | return ODP_FIT_ERROR; |
36956a7d | 1461 | } |
34118cae BP |
1462 | } |
1463 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { | |
1464 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6; | |
fea393b1 | 1465 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) { |
34118cae | 1466 | const struct ovs_key_ipv6 *ipv6_key; |
36956a7d | 1467 | |
34118cae | 1468 | ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]); |
d31f1109 JP |
1469 | memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src); |
1470 | memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst); | |
fa8223b7 | 1471 | flow->ipv6_label = ipv6_key->ipv6_label; |
d31f1109 | 1472 | flow->nw_proto = ipv6_key->ipv6_proto; |
eadef313 | 1473 | flow->nw_tos = ipv6_key->ipv6_tclass; |
a61680c6 | 1474 | flow->nw_ttl = ipv6_key->ipv6_hlimit; |
9e44d715 | 1475 | if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) { |
b0f7b9b5 | 1476 | return ODP_FIT_ERROR; |
d31f1109 | 1477 | } |
34118cae BP |
1478 | } |
1479 | } else if (flow->dl_type == htons(ETH_TYPE_ARP)) { | |
1480 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP; | |
fea393b1 | 1481 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) { |
34118cae | 1482 | const struct ovs_key_arp *arp_key; |
d31f1109 | 1483 | |
34118cae | 1484 | arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]); |
36956a7d BP |
1485 | flow->nw_src = arp_key->arp_sip; |
1486 | flow->nw_dst = arp_key->arp_tip; | |
1487 | if (arp_key->arp_op & htons(0xff00)) { | |
34118cae BP |
1488 | VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow " |
1489 | "key", ntohs(arp_key->arp_op)); | |
b0f7b9b5 | 1490 | return ODP_FIT_ERROR; |
36956a7d BP |
1491 | } |
1492 | flow->nw_proto = ntohs(arp_key->arp_op); | |
bad68a99 JP |
1493 | memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN); |
1494 | memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN); | |
36956a7d | 1495 | } |
36956a7d | 1496 | } |
36956a7d | 1497 | |
34118cae BP |
1498 | if (flow->nw_proto == IPPROTO_TCP |
1499 | && (flow->dl_type == htons(ETH_TYPE_IP) || | |
1500 | flow->dl_type == htons(ETH_TYPE_IPV6)) | |
1501 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { | |
1502 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP; | |
fea393b1 | 1503 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) { |
34118cae | 1504 | const struct ovs_key_tcp *tcp_key; |
36956a7d | 1505 | |
34118cae BP |
1506 | tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]); |
1507 | flow->tp_src = tcp_key->tcp_src; | |
1508 | flow->tp_dst = tcp_key->tcp_dst; | |
7257b535 | 1509 | } |
34118cae BP |
1510 | } else if (flow->nw_proto == IPPROTO_UDP |
1511 | && (flow->dl_type == htons(ETH_TYPE_IP) || | |
1512 | flow->dl_type == htons(ETH_TYPE_IPV6)) | |
1513 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { | |
1514 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP; | |
fea393b1 | 1515 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) { |
34118cae BP |
1516 | const struct ovs_key_udp *udp_key; |
1517 | ||
1518 | udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]); | |
1519 | flow->tp_src = udp_key->udp_src; | |
1520 | flow->tp_dst = udp_key->udp_dst; | |
d31f1109 | 1521 | } |
34118cae BP |
1522 | } else if (flow->nw_proto == IPPROTO_ICMP |
1523 | && flow->dl_type == htons(ETH_TYPE_IP) | |
1524 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { | |
1525 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP; | |
fea393b1 | 1526 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) { |
34118cae BP |
1527 | const struct ovs_key_icmp *icmp_key; |
1528 | ||
1529 | icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]); | |
1530 | flow->tp_src = htons(icmp_key->icmp_type); | |
1531 | flow->tp_dst = htons(icmp_key->icmp_code); | |
685a51a5 | 1532 | } |
34118cae BP |
1533 | } else if (flow->nw_proto == IPPROTO_ICMPV6 |
1534 | && flow->dl_type == htons(ETH_TYPE_IPV6) | |
1535 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { | |
1536 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6; | |
fea393b1 | 1537 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) { |
34118cae BP |
1538 | const struct ovs_key_icmpv6 *icmpv6_key; |
1539 | ||
1540 | icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]); | |
1541 | flow->tp_src = htons(icmpv6_key->icmpv6_type); | |
1542 | flow->tp_dst = htons(icmpv6_key->icmpv6_code); | |
685a51a5 | 1543 | |
34118cae BP |
1544 | if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) || |
1545 | flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) { | |
1546 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND; | |
fea393b1 | 1547 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) { |
34118cae BP |
1548 | const struct ovs_key_nd *nd_key; |
1549 | ||
1550 | nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]); | |
1551 | memcpy(&flow->nd_target, nd_key->nd_target, | |
1552 | sizeof flow->nd_target); | |
1553 | memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN); | |
1554 | memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN); | |
1555 | } | |
1556 | } | |
7257b535 | 1557 | } |
34118cae | 1558 | } |
7257b535 | 1559 | |
b0f7b9b5 BP |
1560 | return check_expectations(present_attrs, out_of_range_attr, expected_attrs, |
1561 | key, key_len); | |
1562 | } | |
1563 | ||
1564 | /* Parse 802.1Q header then encapsulated L3 attributes. */ | |
1565 | static enum odp_key_fitness | |
1566 | parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1], | |
1567 | uint64_t present_attrs, int out_of_range_attr, | |
1568 | uint64_t expected_attrs, struct flow *flow, | |
1569 | const struct nlattr *key, size_t key_len) | |
1570 | { | |
1571 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1572 | ||
1573 | const struct nlattr *encap | |
1574 | = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP) | |
1575 | ? attrs[OVS_KEY_ATTR_ENCAP] : NULL); | |
1576 | enum odp_key_fitness encap_fitness; | |
1577 | enum odp_key_fitness fitness; | |
1578 | ovs_be16 tci; | |
1579 | ||
1580 | /* Calulate fitness of outer attributes. */ | |
1581 | expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) | | |
1582 | (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)); | |
1583 | fitness = check_expectations(present_attrs, out_of_range_attr, | |
1584 | expected_attrs, key, key_len); | |
1585 | ||
1586 | /* Get the VLAN TCI value. */ | |
1587 | if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) { | |
1588 | return ODP_FIT_TOO_LITTLE; | |
1589 | } | |
1590 | tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]); | |
1591 | if (tci == htons(0)) { | |
1592 | /* Corner case for a truncated 802.1Q header. */ | |
1593 | if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) { | |
1594 | return ODP_FIT_TOO_MUCH; | |
1595 | } | |
1596 | return fitness; | |
1597 | } else if (!(tci & htons(VLAN_CFI))) { | |
1598 | VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero " | |
1599 | "but CFI bit is not set", ntohs(tci)); | |
1600 | return ODP_FIT_ERROR; | |
1601 | } | |
1602 | ||
1603 | /* Set vlan_tci. | |
1604 | * Remove the TPID from dl_type since it's not the real Ethertype. */ | |
1605 | flow->vlan_tci = tci; | |
1606 | flow->dl_type = htons(0); | |
1607 | ||
1608 | /* Now parse the encapsulated attributes. */ | |
1609 | if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap), | |
1610 | attrs, &present_attrs, &out_of_range_attr)) { | |
1611 | return ODP_FIT_ERROR; | |
1612 | } | |
1613 | expected_attrs = 0; | |
1614 | ||
1615 | if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) { | |
1616 | return ODP_FIT_ERROR; | |
1617 | } | |
1618 | encap_fitness = parse_l3_onward(attrs, present_attrs, out_of_range_attr, | |
1619 | expected_attrs, flow, key, key_len); | |
1620 | ||
1621 | /* The overall fitness is the worse of the outer and inner attributes. */ | |
1622 | return MAX(fitness, encap_fitness); | |
1623 | } | |
1624 | ||
1625 | /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow | |
1626 | * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well | |
1627 | * 'key' fits our expectations for what a flow key should contain. | |
1628 | * | |
1629 | * This function doesn't take the packet itself as an argument because none of | |
1630 | * the currently understood OVS_KEY_ATTR_* attributes require it. Currently, | |
1631 | * it is always possible to infer which additional attribute(s) should appear | |
1632 | * by looking at the attributes for lower-level protocols, e.g. if the network | |
1633 | * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we | |
1634 | * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it | |
1635 | * must be absent. */ | |
1636 | enum odp_key_fitness | |
1637 | odp_flow_key_to_flow(const struct nlattr *key, size_t key_len, | |
1638 | struct flow *flow) | |
1639 | { | |
1640 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1641 | const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1]; | |
1642 | uint64_t expected_attrs; | |
1643 | uint64_t present_attrs; | |
1644 | int out_of_range_attr; | |
1645 | ||
1646 | memset(flow, 0, sizeof *flow); | |
1647 | ||
1648 | /* Parse attributes. */ | |
1649 | if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs, | |
1650 | &out_of_range_attr)) { | |
1651 | return ODP_FIT_ERROR; | |
1652 | } | |
1653 | expected_attrs = 0; | |
1654 | ||
1655 | /* Metadata. */ | |
1656 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) { | |
deedf7e7 | 1657 | flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]); |
b0f7b9b5 BP |
1658 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY; |
1659 | } | |
1660 | ||
1661 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUN_ID)) { | |
1662 | flow->tun_id = nl_attr_get_be64(attrs[OVS_KEY_ATTR_TUN_ID]); | |
1663 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUN_ID; | |
1664 | } | |
1665 | ||
1666 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) { | |
1667 | uint32_t in_port = nl_attr_get_u32(attrs[OVS_KEY_ATTR_IN_PORT]); | |
1668 | if (in_port >= UINT16_MAX || in_port >= OFPP_MAX) { | |
1669 | VLOG_ERR_RL(&rl, "in_port %"PRIu32" out of supported range", | |
1670 | in_port); | |
1671 | return ODP_FIT_ERROR; | |
1672 | } | |
1673 | flow->in_port = odp_port_to_ofp_port(in_port); | |
1674 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT; | |
1675 | } else { | |
1676 | flow->in_port = OFPP_NONE; | |
1677 | } | |
1678 | ||
1679 | /* Ethernet header. */ | |
1680 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) { | |
1681 | const struct ovs_key_ethernet *eth_key; | |
1682 | ||
1683 | eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]); | |
1684 | memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN); | |
1685 | memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN); | |
1686 | } | |
1687 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET; | |
1688 | ||
1689 | /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */ | |
1690 | if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) { | |
1691 | return ODP_FIT_ERROR; | |
1692 | } | |
1693 | ||
1694 | if (flow->dl_type == htons(ETH_TYPE_VLAN)) { | |
1695 | return parse_8021q_onward(attrs, present_attrs, out_of_range_attr, | |
1696 | expected_attrs, flow, key, key_len); | |
1697 | } | |
1698 | return parse_l3_onward(attrs, present_attrs, out_of_range_attr, | |
1699 | expected_attrs, flow, key, key_len); | |
14608a15 | 1700 | } |
39db78a0 | 1701 | |
6814e51f BP |
1702 | /* Returns 'fitness' as a string, for use in debug messages. */ |
1703 | const char * | |
1704 | odp_key_fitness_to_string(enum odp_key_fitness fitness) | |
1705 | { | |
1706 | switch (fitness) { | |
1707 | case ODP_FIT_PERFECT: | |
1708 | return "OK"; | |
1709 | case ODP_FIT_TOO_MUCH: | |
1710 | return "too_much"; | |
1711 | case ODP_FIT_TOO_LITTLE: | |
1712 | return "too_little"; | |
1713 | case ODP_FIT_ERROR: | |
1714 | return "error"; | |
1715 | default: | |
1716 | return "<unknown>"; | |
1717 | } | |
1718 | } | |
1719 | ||
39db78a0 BP |
1720 | /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies |
1721 | * Netlink PID 'pid'. If 'cookie' is nonnull, adds a userdata attribute whose | |
1722 | * contents contains 'cookie' and returns the offset within 'odp_actions' of | |
1723 | * the start of the cookie. (If 'cookie' is null, then the return value is not | |
1724 | * meaningful.) */ | |
1725 | size_t | |
1726 | odp_put_userspace_action(uint32_t pid, const struct user_action_cookie *cookie, | |
1727 | struct ofpbuf *odp_actions) | |
1728 | { | |
1729 | size_t offset; | |
1730 | ||
1731 | offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE); | |
1732 | nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid); | |
1733 | if (cookie) { | |
1734 | nl_msg_put_unspec(odp_actions, OVS_USERSPACE_ATTR_USERDATA, | |
1735 | cookie, sizeof *cookie); | |
1736 | } | |
1737 | nl_msg_end_nested(odp_actions, offset); | |
1738 | ||
1739 | return cookie ? odp_actions->size - NLA_ALIGN(sizeof *cookie) : 0; | |
1740 | } | |
5bbda0aa EJ |
1741 | \f |
1742 | /* The commit_odp_actions() function and its helpers. */ | |
1743 | ||
1744 | static void | |
1745 | commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type, | |
1746 | const void *key, size_t key_size) | |
1747 | { | |
1748 | size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET); | |
1749 | nl_msg_put_unspec(odp_actions, key_type, key, key_size); | |
1750 | nl_msg_end_nested(odp_actions, offset); | |
1751 | } | |
1752 | ||
1753 | static void | |
1754 | commit_set_tun_id_action(const struct flow *flow, struct flow *base, | |
1755 | struct ofpbuf *odp_actions) | |
1756 | { | |
1757 | if (base->tun_id == flow->tun_id) { | |
1758 | return; | |
1759 | } | |
1760 | base->tun_id = flow->tun_id; | |
1761 | ||
1762 | commit_set_action(odp_actions, OVS_KEY_ATTR_TUN_ID, | |
1763 | &base->tun_id, sizeof(base->tun_id)); | |
1764 | } | |
1765 | ||
1766 | static void | |
1767 | commit_set_ether_addr_action(const struct flow *flow, struct flow *base, | |
1768 | struct ofpbuf *odp_actions) | |
1769 | { | |
1770 | struct ovs_key_ethernet eth_key; | |
1771 | ||
1772 | if (eth_addr_equals(base->dl_src, flow->dl_src) && | |
1773 | eth_addr_equals(base->dl_dst, flow->dl_dst)) { | |
1774 | return; | |
1775 | } | |
1776 | ||
1777 | memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN); | |
1778 | memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN); | |
1779 | ||
1780 | memcpy(eth_key.eth_src, base->dl_src, ETH_ADDR_LEN); | |
1781 | memcpy(eth_key.eth_dst, base->dl_dst, ETH_ADDR_LEN); | |
1782 | ||
1783 | commit_set_action(odp_actions, OVS_KEY_ATTR_ETHERNET, | |
1784 | ð_key, sizeof(eth_key)); | |
1785 | } | |
1786 | ||
1787 | static void | |
1788 | commit_vlan_action(const struct flow *flow, struct flow *base, | |
1789 | struct ofpbuf *odp_actions) | |
1790 | { | |
1791 | if (base->vlan_tci == flow->vlan_tci) { | |
1792 | return; | |
1793 | } | |
1794 | ||
1795 | if (base->vlan_tci & htons(VLAN_CFI)) { | |
1796 | nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN); | |
1797 | } | |
1798 | ||
1799 | if (flow->vlan_tci & htons(VLAN_CFI)) { | |
1800 | struct ovs_action_push_vlan vlan; | |
1801 | ||
1802 | vlan.vlan_tpid = htons(ETH_TYPE_VLAN); | |
1803 | vlan.vlan_tci = flow->vlan_tci; | |
1804 | nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN, | |
1805 | &vlan, sizeof vlan); | |
1806 | } | |
1807 | base->vlan_tci = flow->vlan_tci; | |
1808 | } | |
1809 | ||
1810 | static void | |
c4f2731d | 1811 | commit_set_ipv4_action(const struct flow *flow, struct flow *base, |
5bbda0aa EJ |
1812 | struct ofpbuf *odp_actions) |
1813 | { | |
1814 | struct ovs_key_ipv4 ipv4_key; | |
1815 | ||
5bbda0aa EJ |
1816 | if (base->nw_src == flow->nw_src && |
1817 | base->nw_dst == flow->nw_dst && | |
1818 | base->nw_tos == flow->nw_tos && | |
1819 | base->nw_ttl == flow->nw_ttl && | |
1820 | base->nw_frag == flow->nw_frag) { | |
1821 | return; | |
1822 | } | |
1823 | ||
1824 | ipv4_key.ipv4_src = base->nw_src = flow->nw_src; | |
1825 | ipv4_key.ipv4_dst = base->nw_dst = flow->nw_dst; | |
1826 | ipv4_key.ipv4_tos = base->nw_tos = flow->nw_tos; | |
1827 | ipv4_key.ipv4_ttl = base->nw_ttl = flow->nw_ttl; | |
1828 | ipv4_key.ipv4_proto = base->nw_proto; | |
c4f2731d | 1829 | ipv4_key.ipv4_frag = ovs_to_odp_frag(base->nw_frag); |
5bbda0aa EJ |
1830 | |
1831 | commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4, | |
1832 | &ipv4_key, sizeof(ipv4_key)); | |
1833 | } | |
1834 | ||
c4f2731d PS |
1835 | static void |
1836 | commit_set_ipv6_action(const struct flow *flow, struct flow *base, | |
1837 | struct ofpbuf *odp_actions) | |
1838 | { | |
1839 | struct ovs_key_ipv6 ipv6_key; | |
1840 | ||
1841 | if (ipv6_addr_equals(&base->ipv6_src, &flow->ipv6_src) && | |
1842 | ipv6_addr_equals(&base->ipv6_dst, &flow->ipv6_dst) && | |
1843 | base->ipv6_label == flow->ipv6_label && | |
1844 | base->nw_tos == flow->nw_tos && | |
1845 | base->nw_ttl == flow->nw_ttl && | |
1846 | base->nw_frag == flow->nw_frag) { | |
1847 | return; | |
1848 | } | |
1849 | ||
1850 | base->ipv6_src = flow->ipv6_src; | |
1851 | memcpy(&ipv6_key.ipv6_src, &base->ipv6_src, sizeof(ipv6_key.ipv6_src)); | |
1852 | base->ipv6_dst = flow->ipv6_dst; | |
1853 | memcpy(&ipv6_key.ipv6_dst, &base->ipv6_dst, sizeof(ipv6_key.ipv6_dst)); | |
1854 | ||
1855 | ipv6_key.ipv6_label = base->ipv6_label = flow->ipv6_label; | |
1856 | ipv6_key.ipv6_tclass = base->nw_tos = flow->nw_tos; | |
1857 | ipv6_key.ipv6_hlimit = base->nw_ttl = flow->nw_ttl; | |
1858 | ipv6_key.ipv6_proto = base->nw_proto; | |
1859 | ipv6_key.ipv6_frag = ovs_to_odp_frag(base->nw_frag); | |
1860 | ||
1861 | commit_set_action(odp_actions, OVS_KEY_ATTR_IPV6, | |
1862 | &ipv6_key, sizeof(ipv6_key)); | |
1863 | } | |
1864 | ||
1865 | static void | |
1866 | commit_set_nw_action(const struct flow *flow, struct flow *base, | |
1867 | struct ofpbuf *odp_actions) | |
1868 | { | |
1869 | /* Check if flow really have an IP header. */ | |
1870 | if (!flow->nw_proto) { | |
1871 | return; | |
1872 | } | |
1873 | ||
1874 | if (base->dl_type == htons(ETH_TYPE_IP)) { | |
1875 | commit_set_ipv4_action(flow, base, odp_actions); | |
1876 | } else if (base->dl_type == htons(ETH_TYPE_IPV6)) { | |
1877 | commit_set_ipv6_action(flow, base, odp_actions); | |
1878 | } | |
1879 | } | |
1880 | ||
5bbda0aa EJ |
1881 | static void |
1882 | commit_set_port_action(const struct flow *flow, struct flow *base, | |
1883 | struct ofpbuf *odp_actions) | |
1884 | { | |
1885 | if (!base->tp_src || !base->tp_dst) { | |
1886 | return; | |
1887 | } | |
1888 | ||
1889 | if (base->tp_src == flow->tp_src && | |
1890 | base->tp_dst == flow->tp_dst) { | |
1891 | return; | |
1892 | } | |
1893 | ||
1894 | if (flow->nw_proto == IPPROTO_TCP) { | |
1895 | struct ovs_key_tcp port_key; | |
1896 | ||
1897 | port_key.tcp_src = base->tp_src = flow->tp_src; | |
1898 | port_key.tcp_dst = base->tp_dst = flow->tp_dst; | |
1899 | ||
1900 | commit_set_action(odp_actions, OVS_KEY_ATTR_TCP, | |
1901 | &port_key, sizeof(port_key)); | |
1902 | ||
1903 | } else if (flow->nw_proto == IPPROTO_UDP) { | |
1904 | struct ovs_key_udp port_key; | |
1905 | ||
1906 | port_key.udp_src = base->tp_src = flow->tp_src; | |
1907 | port_key.udp_dst = base->tp_dst = flow->tp_dst; | |
1908 | ||
1909 | commit_set_action(odp_actions, OVS_KEY_ATTR_UDP, | |
1910 | &port_key, sizeof(port_key)); | |
1911 | } | |
1912 | } | |
1913 | ||
1914 | static void | |
1915 | commit_set_priority_action(const struct flow *flow, struct flow *base, | |
1916 | struct ofpbuf *odp_actions) | |
1917 | { | |
deedf7e7 | 1918 | if (base->skb_priority == flow->skb_priority) { |
5bbda0aa EJ |
1919 | return; |
1920 | } | |
deedf7e7 | 1921 | base->skb_priority = flow->skb_priority; |
5bbda0aa EJ |
1922 | |
1923 | commit_set_action(odp_actions, OVS_KEY_ATTR_PRIORITY, | |
deedf7e7 | 1924 | &base->skb_priority, sizeof(base->skb_priority)); |
5bbda0aa EJ |
1925 | } |
1926 | ||
1927 | /* If any of the flow key data that ODP actions can modify are different in | |
1928 | * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow | |
1929 | * key from 'base' into 'flow', and then changes 'base' the same way. */ | |
1930 | void | |
1931 | commit_odp_actions(const struct flow *flow, struct flow *base, | |
1932 | struct ofpbuf *odp_actions) | |
1933 | { | |
1934 | commit_set_tun_id_action(flow, base, odp_actions); | |
1935 | commit_set_ether_addr_action(flow, base, odp_actions); | |
1936 | commit_vlan_action(flow, base, odp_actions); | |
1937 | commit_set_nw_action(flow, base, odp_actions); | |
1938 | commit_set_port_action(flow, base, odp_actions); | |
1939 | commit_set_priority_action(flow, base, odp_actions); | |
1940 | } |