]>
Commit | Line | Data |
---|---|---|
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 | ||
17 | #include <config.h> | |
bed69b3e | 18 | #include <arpa/inet.h> |
064af421 | 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" |
064af421 | 33 | #include "packets.h" |
44bac24b | 34 | #include "simap.h" |
064af421 BP |
35 | #include "timeval.h" |
36 | #include "util.h" | |
34118cae BP |
37 | #include "vlog.h" |
38 | ||
39 | VLOG_DEFINE_THIS_MODULE(odp_util); | |
064af421 | 40 | |
df2c07f4 JP |
41 | /* The interface between userspace and kernel uses an "OVS_*" prefix. |
42 | * Since this is fairly non-specific for the OVS userspace components, | |
43 | * "ODP_*" (Open vSwitch Datapath) is used as the prefix for | |
44 | * interactions with the datapath. | |
45 | */ | |
46 | ||
7202cbe5 BP |
47 | /* The set of characters that may separate one action or one key attribute |
48 | * from another. */ | |
49 | static const char *delimiters = ", \t\r\n"; | |
50 | ||
44bac24b | 51 | static int parse_odp_key_attr(const char *, const struct simap *port_names, |
7202cbe5 | 52 | struct ofpbuf *); |
a052b51b BP |
53 | static void format_odp_key_attr(const struct nlattr *a, struct ds *ds); |
54 | ||
98403001 BP |
55 | /* Returns one the following for the action with the given OVS_ACTION_ATTR_* |
56 | * 'type': | |
57 | * | |
58 | * - For an action whose argument has a fixed length, returned that | |
59 | * nonnegative length in bytes. | |
60 | * | |
61 | * - For an action with a variable-length argument, returns -2. | |
62 | * | |
63 | * - For an invalid 'type', returns -1. */ | |
4edb9ae9 | 64 | static int |
cdee00fd BP |
65 | odp_action_len(uint16_t type) |
66 | { | |
df2c07f4 | 67 | if (type > OVS_ACTION_ATTR_MAX) { |
cdee00fd BP |
68 | return -1; |
69 | } | |
70 | ||
09ded0ad | 71 | switch ((enum ovs_action_attr) type) { |
fea393b1 | 72 | case OVS_ACTION_ATTR_OUTPUT: return sizeof(uint32_t); |
98403001 | 73 | case OVS_ACTION_ATTR_USERSPACE: return -2; |
fea393b1 BP |
74 | case OVS_ACTION_ATTR_PUSH_VLAN: return sizeof(struct ovs_action_push_vlan); |
75 | case OVS_ACTION_ATTR_POP_VLAN: return 0; | |
4edb9ae9 | 76 | case OVS_ACTION_ATTR_SET: return -2; |
98403001 | 77 | case OVS_ACTION_ATTR_SAMPLE: return -2; |
df2c07f4 JP |
78 | |
79 | case OVS_ACTION_ATTR_UNSPEC: | |
80 | case __OVS_ACTION_ATTR_MAX: | |
cdee00fd BP |
81 | return -1; |
82 | } | |
83 | ||
84 | return -1; | |
85 | } | |
86 | ||
744791b5 BP |
87 | static const char * |
88 | ovs_key_attr_to_string(enum ovs_key_attr attr) | |
89 | { | |
90 | static char unknown_attr[3 + INT_STRLEN(unsigned int) + 1]; | |
91 | ||
92 | switch (attr) { | |
93 | case OVS_KEY_ATTR_UNSPEC: return "unspec"; | |
fea393b1 | 94 | case OVS_KEY_ATTR_ENCAP: return "encap"; |
744791b5 | 95 | case OVS_KEY_ATTR_PRIORITY: return "priority"; |
356af50b KM |
96 | case OVS_KEY_ATTR_TUN_ID: return "tun_id"; |
97 | case OVS_KEY_ATTR_IPV4_TUNNEL: return "ipv4_tunnel"; | |
744791b5 BP |
98 | case OVS_KEY_ATTR_IN_PORT: return "in_port"; |
99 | case OVS_KEY_ATTR_ETHERNET: return "eth"; | |
fea393b1 | 100 | case OVS_KEY_ATTR_VLAN: return "vlan"; |
744791b5 BP |
101 | case OVS_KEY_ATTR_ETHERTYPE: return "eth_type"; |
102 | case OVS_KEY_ATTR_IPV4: return "ipv4"; | |
103 | case OVS_KEY_ATTR_IPV6: return "ipv6"; | |
104 | case OVS_KEY_ATTR_TCP: return "tcp"; | |
105 | case OVS_KEY_ATTR_UDP: return "udp"; | |
106 | case OVS_KEY_ATTR_ICMP: return "icmp"; | |
107 | case OVS_KEY_ATTR_ICMPV6: return "icmpv6"; | |
108 | case OVS_KEY_ATTR_ARP: return "arp"; | |
109 | case OVS_KEY_ATTR_ND: return "nd"; | |
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 | ||
6a7e895f | 169 | static const char * |
ec956fc7 | 170 | slow_path_reason_to_string(uint32_t data) |
6a7e895f | 171 | { |
ec956fc7 PS |
172 | enum slow_path_reason bit = (enum slow_path_reason) data; |
173 | ||
6a7e895f BP |
174 | switch (bit) { |
175 | case SLOW_CFM: | |
176 | return "cfm"; | |
177 | case SLOW_LACP: | |
178 | return "lacp"; | |
179 | case SLOW_STP: | |
180 | return "stp"; | |
181 | case SLOW_IN_BAND: | |
182 | return "in_band"; | |
183 | case SLOW_CONTROLLER: | |
184 | return "controller"; | |
185 | case SLOW_MATCH: | |
186 | return "match"; | |
187 | default: | |
188 | return NULL; | |
189 | } | |
190 | } | |
191 | ||
192 | static void | |
ec956fc7 PS |
193 | format_flags(struct ds *ds, const char *(*bit_to_string)(uint32_t), |
194 | uint32_t flags) | |
6a7e895f BP |
195 | { |
196 | uint32_t bad = 0; | |
197 | ||
ec956fc7 PS |
198 | ds_put_format(ds, "("); |
199 | if (!flags) { | |
200 | goto out; | |
201 | } | |
202 | while (flags) { | |
203 | uint32_t bit = rightmost_1bit(flags); | |
6a7e895f BP |
204 | const char *s; |
205 | ||
ec956fc7 | 206 | s = bit_to_string(bit); |
6a7e895f BP |
207 | if (s) { |
208 | ds_put_format(ds, "%s,", s); | |
209 | } else { | |
210 | bad |= bit; | |
211 | } | |
212 | ||
ec956fc7 | 213 | flags &= ~bit; |
6a7e895f BP |
214 | } |
215 | ||
216 | if (bad) { | |
217 | ds_put_format(ds, "0x%"PRIx32",", bad); | |
218 | } | |
219 | ds_chomp(ds, ','); | |
ec956fc7 PS |
220 | out: |
221 | ds_put_format(ds, ")"); | |
222 | } | |
223 | ||
224 | static int | |
225 | parse_flags(const char *s, const char *(*bit_to_string)(uint32_t), | |
226 | uint32_t *res) | |
227 | { | |
228 | uint32_t result = 0; | |
229 | int n = 0; | |
230 | ||
231 | if (s[n] != '(') { | |
232 | return -EINVAL; | |
233 | } | |
234 | n++; | |
235 | ||
236 | while (s[n] != ')') { | |
237 | unsigned long long int flags; | |
238 | uint32_t bit; | |
239 | int n0; | |
240 | ||
241 | if (sscanf(&s[n], "%lli%n", &flags, &n0) > 0 && n0 > 0) { | |
242 | n += n0 + (s[n + n0] == ','); | |
243 | result |= flags; | |
244 | continue; | |
245 | } | |
246 | ||
247 | for (bit = 1; bit; bit <<= 1) { | |
248 | const char *name = bit_to_string(bit); | |
249 | size_t len; | |
250 | ||
251 | if (!name) { | |
252 | continue; | |
253 | } | |
254 | ||
255 | len = strlen(name); | |
256 | if (!strncmp(s + n, name, len) && | |
257 | (s[n + len] == ',' || s[n + len] == ')')) { | |
258 | result |= bit; | |
259 | n += len + (s[n + len] == ','); | |
260 | break; | |
261 | } | |
262 | } | |
263 | ||
264 | if (!bit) { | |
265 | return -EINVAL; | |
266 | } | |
267 | } | |
268 | n++; | |
269 | ||
270 | *res = result; | |
271 | return n; | |
6a7e895f BP |
272 | } |
273 | ||
98403001 BP |
274 | static void |
275 | format_odp_userspace_action(struct ds *ds, const struct nlattr *attr) | |
276 | { | |
277 | static const struct nl_policy ovs_userspace_policy[] = { | |
278 | [OVS_USERSPACE_ATTR_PID] = { .type = NL_A_U32 }, | |
279 | [OVS_USERSPACE_ATTR_USERDATA] = { .type = NL_A_U64, .optional = true }, | |
280 | }; | |
281 | struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)]; | |
282 | ||
283 | if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) { | |
284 | ds_put_cstr(ds, "userspace(error)"); | |
285 | return; | |
286 | } | |
287 | ||
288 | ds_put_format(ds, "userspace(pid=%"PRIu32, | |
289 | nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID])); | |
290 | ||
291 | if (a[OVS_USERSPACE_ATTR_USERDATA]) { | |
292 | uint64_t userdata = nl_attr_get_u64(a[OVS_USERSPACE_ATTR_USERDATA]); | |
1673e0e4 | 293 | union user_action_cookie cookie; |
98403001 BP |
294 | |
295 | memcpy(&cookie, &userdata, sizeof cookie); | |
296 | ||
21ae82ff BP |
297 | switch (cookie.type) { |
298 | case USER_ACTION_COOKIE_SFLOW: | |
6a7e895f BP |
299 | ds_put_format(ds, ",sFlow(" |
300 | "vid=%"PRIu16",pcp=%"PRIu8",output=%"PRIu32")", | |
1673e0e4 BP |
301 | vlan_tci_to_vid(cookie.sflow.vlan_tci), |
302 | vlan_tci_to_pcp(cookie.sflow.vlan_tci), | |
303 | cookie.sflow.output); | |
21ae82ff BP |
304 | break; |
305 | ||
6a7e895f | 306 | case USER_ACTION_COOKIE_SLOW_PATH: |
ec956fc7 PS |
307 | ds_put_cstr(ds, ",slow_path"); |
308 | format_flags(ds, slow_path_reason_to_string, cookie.slow_path.reason); | |
6a7e895f BP |
309 | break; |
310 | ||
21ae82ff BP |
311 | case USER_ACTION_COOKIE_UNSPEC: |
312 | default: | |
98403001 | 313 | ds_put_format(ds, ",userdata=0x%"PRIx64, userdata); |
36fc5f18 | 314 | break; |
98403001 BP |
315 | } |
316 | } | |
317 | ||
318 | ds_put_char(ds, ')'); | |
319 | } | |
320 | ||
8ddc056d BP |
321 | static void |
322 | format_vlan_tci(struct ds *ds, ovs_be16 vlan_tci) | |
323 | { | |
324 | ds_put_format(ds, "vid=%"PRIu16",pcp=%d", | |
325 | vlan_tci_to_vid(vlan_tci), | |
326 | vlan_tci_to_pcp(vlan_tci)); | |
327 | if (!(vlan_tci & htons(VLAN_CFI))) { | |
328 | ds_put_cstr(ds, ",cfi=0"); | |
329 | } | |
330 | } | |
331 | ||
4edb9ae9 | 332 | static void |
cdee00fd | 333 | format_odp_action(struct ds *ds, const struct nlattr *a) |
064af421 | 334 | { |
98403001 | 335 | int expected_len; |
4edb9ae9 | 336 | enum ovs_action_attr type = nl_attr_type(a); |
fea393b1 | 337 | const struct ovs_action_push_vlan *vlan; |
cdee00fd | 338 | |
98403001 BP |
339 | expected_len = odp_action_len(nl_attr_type(a)); |
340 | if (expected_len != -2 && nl_attr_get_size(a) != expected_len) { | |
8ba43fbd | 341 | ds_put_format(ds, "bad length %zu, expected %d for: ", |
98403001 | 342 | nl_attr_get_size(a), expected_len); |
cdee00fd BP |
343 | format_generic_odp_action(ds, a); |
344 | return; | |
345 | } | |
346 | ||
4edb9ae9 | 347 | switch (type) { |
df2c07f4 | 348 | case OVS_ACTION_ATTR_OUTPUT: |
cdee00fd | 349 | ds_put_format(ds, "%"PRIu16, nl_attr_get_u32(a)); |
064af421 | 350 | break; |
df2c07f4 | 351 | case OVS_ACTION_ATTR_USERSPACE: |
98403001 | 352 | format_odp_userspace_action(ds, a); |
064af421 | 353 | break; |
4edb9ae9 PS |
354 | case OVS_ACTION_ATTR_SET: |
355 | ds_put_cstr(ds, "set("); | |
356 | format_odp_key_attr(nl_attr_get(a), ds); | |
357 | ds_put_cstr(ds, ")"); | |
064af421 | 358 | break; |
fea393b1 BP |
359 | case OVS_ACTION_ATTR_PUSH_VLAN: |
360 | vlan = nl_attr_get(a); | |
361 | ds_put_cstr(ds, "push_vlan("); | |
362 | if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) { | |
363 | ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid)); | |
364 | } | |
8ddc056d BP |
365 | format_vlan_tci(ds, vlan->vlan_tci); |
366 | ds_put_char(ds, ')'); | |
064af421 | 367 | break; |
fea393b1 BP |
368 | case OVS_ACTION_ATTR_POP_VLAN: |
369 | ds_put_cstr(ds, "pop_vlan"); | |
064af421 | 370 | break; |
6ff686f2 PS |
371 | case OVS_ACTION_ATTR_SAMPLE: |
372 | format_odp_sample_action(ds, a); | |
373 | break; | |
4edb9ae9 PS |
374 | case OVS_ACTION_ATTR_UNSPEC: |
375 | case __OVS_ACTION_ATTR_MAX: | |
064af421 | 376 | default: |
cdee00fd | 377 | format_generic_odp_action(ds, a); |
064af421 BP |
378 | break; |
379 | } | |
380 | } | |
381 | ||
382 | void | |
cdee00fd | 383 | format_odp_actions(struct ds *ds, const struct nlattr *actions, |
cf22f8cb | 384 | size_t actions_len) |
064af421 | 385 | { |
cdee00fd BP |
386 | if (actions_len) { |
387 | const struct nlattr *a; | |
388 | unsigned int left; | |
389 | ||
390 | NL_ATTR_FOR_EACH (a, left, actions, actions_len) { | |
391 | if (a != actions) { | |
392 | ds_put_char(ds, ','); | |
393 | } | |
394 | format_odp_action(ds, a); | |
064af421 | 395 | } |
cdee00fd | 396 | if (left) { |
3a8cfc50 BP |
397 | int i; |
398 | ||
3476fce3 BP |
399 | if (left == actions_len) { |
400 | ds_put_cstr(ds, "<empty>"); | |
401 | } | |
3a8cfc50 BP |
402 | ds_put_format(ds, ",***%u leftover bytes*** (", left); |
403 | for (i = 0; i < left; i++) { | |
404 | ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]); | |
405 | } | |
406 | ds_put_char(ds, ')'); | |
cdee00fd BP |
407 | } |
408 | } else { | |
064af421 BP |
409 | ds_put_cstr(ds, "drop"); |
410 | } | |
411 | } | |
7202cbe5 BP |
412 | |
413 | static int | |
44bac24b | 414 | parse_odp_action(const char *s, const struct simap *port_names, |
7202cbe5 BP |
415 | struct ofpbuf *actions) |
416 | { | |
417 | /* Many of the sscanf calls in this function use oversized destination | |
418 | * fields because some sscanf() implementations truncate the range of %i | |
419 | * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a | |
420 | * value of 0x7fff. The other alternatives are to allow only a single | |
421 | * radix (e.g. decimal or hexadecimal) or to write more sophisticated | |
422 | * parsers. | |
423 | * | |
424 | * The tun_id parser has to use an alternative approach because there is no | |
425 | * type larger than 64 bits. */ | |
426 | ||
427 | { | |
428 | unsigned long long int port; | |
429 | int n = -1; | |
430 | ||
431 | if (sscanf(s, "%lli%n", &port, &n) > 0 && n > 0) { | |
432 | nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port); | |
433 | return n; | |
434 | } | |
435 | } | |
436 | ||
437 | if (port_names) { | |
438 | int len = strcspn(s, delimiters); | |
44bac24b | 439 | struct simap_node *node; |
7202cbe5 | 440 | |
44bac24b | 441 | node = simap_find_len(port_names, s, len); |
7202cbe5 | 442 | if (node) { |
44bac24b | 443 | nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, node->data); |
7202cbe5 BP |
444 | return len; |
445 | } | |
446 | } | |
447 | ||
448 | { | |
449 | unsigned long long int pid; | |
36fc5f18 | 450 | unsigned long long int output; |
7202cbe5 | 451 | char userdata_s[32]; |
7202cbe5 BP |
452 | int vid, pcp; |
453 | int n = -1; | |
454 | ||
455 | if (sscanf(s, "userspace(pid=%lli)%n", &pid, &n) > 0 && n > 0) { | |
456 | odp_put_userspace_action(pid, NULL, actions); | |
457 | return n; | |
6a7e895f BP |
458 | } else if (sscanf(s, "userspace(pid=%lli,sFlow(vid=%i," |
459 | "pcp=%i,output=%lli))%n", | |
36fc5f18 | 460 | &pid, &vid, &pcp, &output, &n) > 0 && n > 0) { |
1673e0e4 | 461 | union user_action_cookie cookie; |
7202cbe5 BP |
462 | uint16_t tci; |
463 | ||
464 | tci = vid | (pcp << VLAN_PCP_SHIFT); | |
465 | if (tci) { | |
466 | tci |= VLAN_CFI; | |
467 | } | |
468 | ||
469 | cookie.type = USER_ACTION_COOKIE_SFLOW; | |
1673e0e4 BP |
470 | cookie.sflow.vlan_tci = htons(tci); |
471 | cookie.sflow.output = output; | |
6a7e895f BP |
472 | odp_put_userspace_action(pid, &cookie, actions); |
473 | return n; | |
ec956fc7 | 474 | } else if (sscanf(s, "userspace(pid=%lli,slow_path%n", &pid, &n) > 0 |
6a7e895f BP |
475 | && n > 0) { |
476 | union user_action_cookie cookie; | |
ec956fc7 | 477 | int res; |
6a7e895f BP |
478 | |
479 | cookie.type = USER_ACTION_COOKIE_SLOW_PATH; | |
480 | cookie.slow_path.unused = 0; | |
481 | cookie.slow_path.reason = 0; | |
482 | ||
ec956fc7 PS |
483 | res = parse_flags(&s[n], slow_path_reason_to_string, |
484 | &cookie.slow_path.reason); | |
485 | if (res < 0) { | |
486 | return res; | |
6a7e895f | 487 | } |
ec956fc7 PS |
488 | n += res; |
489 | if (s[n] != ')') { | |
6a7e895f BP |
490 | return -EINVAL; |
491 | } | |
ec956fc7 | 492 | n++; |
6a7e895f | 493 | |
7202cbe5 BP |
494 | odp_put_userspace_action(pid, &cookie, actions); |
495 | return n; | |
496 | } else if (sscanf(s, "userspace(pid=%lli,userdata=" | |
497 | "%31[x0123456789abcdefABCDEF])%n", &pid, userdata_s, | |
498 | &n) > 0 && n > 0) { | |
1673e0e4 | 499 | union user_action_cookie cookie; |
7202cbe5 BP |
500 | uint64_t userdata; |
501 | ||
502 | userdata = strtoull(userdata_s, NULL, 0); | |
503 | memcpy(&cookie, &userdata, sizeof cookie); | |
504 | odp_put_userspace_action(pid, &cookie, actions); | |
505 | return n; | |
506 | } | |
507 | } | |
508 | ||
509 | if (!strncmp(s, "set(", 4)) { | |
510 | size_t start_ofs; | |
511 | int retval; | |
512 | ||
513 | start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET); | |
514 | retval = parse_odp_key_attr(s + 4, port_names, actions); | |
515 | if (retval < 0) { | |
516 | return retval; | |
517 | } | |
518 | if (s[retval + 4] != ')') { | |
519 | return -EINVAL; | |
520 | } | |
521 | nl_msg_end_nested(actions, start_ofs); | |
522 | return retval + 5; | |
523 | } | |
524 | ||
becffb86 BP |
525 | { |
526 | struct ovs_action_push_vlan push; | |
527 | int tpid = ETH_TYPE_VLAN; | |
528 | int vid, pcp; | |
529 | int cfi = 1; | |
530 | int n = -1; | |
7202cbe5 | 531 | |
becffb86 BP |
532 | if ((sscanf(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n) > 0 |
533 | && n > 0) | |
534 | || (sscanf(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n", | |
535 | &vid, &pcp, &cfi, &n) > 0 && n > 0) | |
536 | || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n", | |
537 | &tpid, &vid, &pcp, &n) > 0 && n > 0) | |
538 | || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n", | |
539 | &tpid, &vid, &pcp, &cfi, &n) > 0 && n > 0)) { | |
540 | push.vlan_tpid = htons(tpid); | |
541 | push.vlan_tci = htons((vid << VLAN_VID_SHIFT) | |
542 | | (pcp << VLAN_PCP_SHIFT) | |
543 | | (cfi ? VLAN_CFI : 0)); | |
544 | nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN, | |
545 | &push, sizeof push); | |
546 | ||
547 | return n; | |
7202cbe5 | 548 | } |
7202cbe5 BP |
549 | } |
550 | ||
becffb86 BP |
551 | if (!strncmp(s, "pop_vlan", 8)) { |
552 | nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN); | |
553 | return 8; | |
7202cbe5 BP |
554 | } |
555 | ||
556 | { | |
557 | double percentage; | |
558 | int n = -1; | |
559 | ||
560 | if (sscanf(s, "sample(sample=%lf%%,actions(%n", &percentage, &n) > 0 | |
561 | && percentage >= 0. && percentage <= 100.0 | |
562 | && n > 0) { | |
563 | size_t sample_ofs, actions_ofs; | |
564 | double probability; | |
565 | ||
566 | probability = floor(UINT32_MAX * (percentage / 100.0) + .5); | |
567 | sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE); | |
568 | nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY, | |
569 | (probability <= 0 ? 0 | |
570 | : probability >= UINT32_MAX ? UINT32_MAX | |
571 | : probability)); | |
572 | ||
573 | actions_ofs = nl_msg_start_nested(actions, | |
574 | OVS_SAMPLE_ATTR_ACTIONS); | |
575 | for (;;) { | |
576 | int retval; | |
577 | ||
79d4ffe2 | 578 | n += strspn(s + n, delimiters); |
7202cbe5 BP |
579 | if (s[n] == ')') { |
580 | break; | |
581 | } | |
582 | ||
583 | retval = parse_odp_action(s + n, port_names, actions); | |
584 | if (retval < 0) { | |
585 | return retval; | |
586 | } | |
587 | n += retval; | |
7202cbe5 BP |
588 | } |
589 | nl_msg_end_nested(actions, actions_ofs); | |
590 | nl_msg_end_nested(actions, sample_ofs); | |
591 | ||
592 | return s[n + 1] == ')' ? n + 2 : -EINVAL; | |
593 | } | |
594 | } | |
595 | ||
596 | return -EINVAL; | |
597 | } | |
598 | ||
599 | /* Parses the string representation of datapath actions, in the format output | |
600 | * by format_odp_action(). Returns 0 if successful, otherwise a positive errno | |
601 | * value. On success, the ODP actions are appended to 'actions' as a series of | |
602 | * Netlink attributes. On failure, no data is appended to 'actions'. Either | |
603 | * way, 'actions''s data might be reallocated. */ | |
604 | int | |
44bac24b | 605 | odp_actions_from_string(const char *s, const struct simap *port_names, |
7202cbe5 BP |
606 | struct ofpbuf *actions) |
607 | { | |
608 | size_t old_size; | |
609 | ||
610 | if (!strcasecmp(s, "drop")) { | |
611 | return 0; | |
612 | } | |
613 | ||
614 | old_size = actions->size; | |
615 | for (;;) { | |
616 | int retval; | |
617 | ||
618 | s += strspn(s, delimiters); | |
619 | if (!*s) { | |
620 | return 0; | |
621 | } | |
622 | ||
623 | retval = parse_odp_action(s, port_names, actions); | |
624 | if (retval < 0 || !strchr(delimiters, s[retval])) { | |
625 | actions->size = old_size; | |
626 | return -retval; | |
627 | } | |
628 | s += retval; | |
629 | } | |
630 | ||
631 | return 0; | |
632 | } | |
14608a15 | 633 | \f |
36956a7d | 634 | /* Returns the correct length of the payload for a flow key attribute of the |
fea393b1 BP |
635 | * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload |
636 | * is variable length. */ | |
36956a7d BP |
637 | static int |
638 | odp_flow_key_attr_len(uint16_t type) | |
639 | { | |
df2c07f4 | 640 | if (type > OVS_KEY_ATTR_MAX) { |
36956a7d BP |
641 | return -1; |
642 | } | |
643 | ||
09ded0ad | 644 | switch ((enum ovs_key_attr) type) { |
fea393b1 | 645 | case OVS_KEY_ATTR_ENCAP: return -2; |
abff858b | 646 | case OVS_KEY_ATTR_PRIORITY: return 4; |
df2c07f4 | 647 | case OVS_KEY_ATTR_TUN_ID: return 8; |
356af50b | 648 | case OVS_KEY_ATTR_IPV4_TUNNEL: return sizeof(struct ovs_key_ipv4_tunnel); |
df2c07f4 JP |
649 | case OVS_KEY_ATTR_IN_PORT: return 4; |
650 | case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet); | |
fea393b1 | 651 | case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16); |
df2c07f4 JP |
652 | case OVS_KEY_ATTR_ETHERTYPE: return 2; |
653 | case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4); | |
654 | case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6); | |
655 | case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp); | |
656 | case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp); | |
657 | case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp); | |
658 | case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6); | |
659 | case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp); | |
660 | case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd); | |
661 | ||
662 | case OVS_KEY_ATTR_UNSPEC: | |
663 | case __OVS_KEY_ATTR_MAX: | |
36956a7d BP |
664 | return -1; |
665 | } | |
666 | ||
667 | return -1; | |
668 | } | |
669 | ||
36956a7d BP |
670 | static void |
671 | format_generic_odp_key(const struct nlattr *a, struct ds *ds) | |
672 | { | |
673 | size_t len = nl_attr_get_size(a); | |
36956a7d BP |
674 | if (len) { |
675 | const uint8_t *unspec; | |
676 | unsigned int i; | |
677 | ||
678 | unspec = nl_attr_get(a); | |
679 | for (i = 0; i < len; i++) { | |
680 | ds_put_char(ds, i ? ' ': '('); | |
681 | ds_put_format(ds, "%02x", unspec[i]); | |
682 | } | |
683 | ds_put_char(ds, ')'); | |
684 | } | |
685 | } | |
686 | ||
7257b535 BP |
687 | static const char * |
688 | ovs_frag_type_to_string(enum ovs_frag_type type) | |
689 | { | |
690 | switch (type) { | |
691 | case OVS_FRAG_TYPE_NONE: | |
692 | return "no"; | |
693 | case OVS_FRAG_TYPE_FIRST: | |
694 | return "first"; | |
695 | case OVS_FRAG_TYPE_LATER: | |
696 | return "later"; | |
697 | case __OVS_FRAG_TYPE_MAX: | |
698 | default: | |
699 | return "<error>"; | |
700 | } | |
701 | } | |
702 | ||
29c7a2b2 PS |
703 | static const char * |
704 | tun_flag_to_string(uint32_t flags) | |
705 | { | |
706 | switch (flags) { | |
707 | case OVS_TNL_F_DONT_FRAGMENT: | |
708 | return "df"; | |
709 | case OVS_TNL_F_CSUM: | |
710 | return "csum"; | |
711 | case OVS_TNL_F_KEY: | |
712 | return "key"; | |
713 | default: | |
714 | return NULL; | |
715 | } | |
716 | } | |
717 | ||
36956a7d BP |
718 | static void |
719 | format_odp_key_attr(const struct nlattr *a, struct ds *ds) | |
720 | { | |
df2c07f4 | 721 | const struct ovs_key_ethernet *eth_key; |
df2c07f4 JP |
722 | const struct ovs_key_ipv4 *ipv4_key; |
723 | const struct ovs_key_ipv6 *ipv6_key; | |
724 | const struct ovs_key_tcp *tcp_key; | |
725 | const struct ovs_key_udp *udp_key; | |
726 | const struct ovs_key_icmp *icmp_key; | |
727 | const struct ovs_key_icmpv6 *icmpv6_key; | |
728 | const struct ovs_key_arp *arp_key; | |
729 | const struct ovs_key_nd *nd_key; | |
356af50b | 730 | const struct ovs_key_ipv4_tunnel *ipv4_tun_key; |
7a8e9ed2 | 731 | enum ovs_key_attr attr = nl_attr_type(a); |
fea393b1 | 732 | int expected_len; |
36956a7d | 733 | |
b3b5bf02 | 734 | ds_put_cstr(ds, ovs_key_attr_to_string(attr)); |
fea393b1 BP |
735 | expected_len = odp_flow_key_attr_len(nl_attr_type(a)); |
736 | if (expected_len != -2 && nl_attr_get_size(a) != expected_len) { | |
b3b5bf02 | 737 | ds_put_format(ds, "(bad length %zu, expected %d)", |
36956a7d BP |
738 | nl_attr_get_size(a), |
739 | odp_flow_key_attr_len(nl_attr_type(a))); | |
740 | format_generic_odp_key(a, ds); | |
741 | return; | |
742 | } | |
743 | ||
7a8e9ed2 | 744 | switch (attr) { |
fea393b1 BP |
745 | case OVS_KEY_ATTR_ENCAP: |
746 | ds_put_cstr(ds, "("); | |
747 | if (nl_attr_get_size(a)) { | |
748 | odp_flow_key_format(nl_attr_get(a), nl_attr_get_size(a), ds); | |
749 | } | |
750 | ds_put_char(ds, ')'); | |
751 | break; | |
752 | ||
abff858b | 753 | case OVS_KEY_ATTR_PRIORITY: |
b3b5bf02 | 754 | ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a)); |
abff858b PS |
755 | break; |
756 | ||
df2c07f4 | 757 | case OVS_KEY_ATTR_TUN_ID: |
b3b5bf02 | 758 | ds_put_format(ds, "(%#"PRIx64")", ntohll(nl_attr_get_be64(a))); |
36956a7d BP |
759 | break; |
760 | ||
356af50b KM |
761 | case OVS_KEY_ATTR_IPV4_TUNNEL: |
762 | ipv4_tun_key = nl_attr_get(a); | |
29c7a2b2 PS |
763 | ds_put_format(ds, "(tun_id=0x%"PRIx64",src="IP_FMT",dst="IP_FMT"," |
764 | "tos=0x%"PRIx8",ttl=%"PRIu8",flags", | |
765 | ntohll(ipv4_tun_key->tun_id), | |
356af50b KM |
766 | IP_ARGS(&ipv4_tun_key->ipv4_src), |
767 | IP_ARGS(&ipv4_tun_key->ipv4_dst), | |
768 | ipv4_tun_key->ipv4_tos, ipv4_tun_key->ipv4_ttl); | |
29c7a2b2 PS |
769 | |
770 | format_flags(ds, tun_flag_to_string, ipv4_tun_key->tun_flags); | |
771 | ds_put_format(ds, ")"); | |
356af50b KM |
772 | break; |
773 | ||
df2c07f4 | 774 | case OVS_KEY_ATTR_IN_PORT: |
b3b5bf02 | 775 | ds_put_format(ds, "(%"PRIu32")", nl_attr_get_u32(a)); |
36956a7d BP |
776 | break; |
777 | ||
df2c07f4 | 778 | case OVS_KEY_ATTR_ETHERNET: |
36956a7d | 779 | eth_key = nl_attr_get(a); |
b3b5bf02 | 780 | ds_put_format(ds, "(src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT")", |
36956a7d BP |
781 | ETH_ADDR_ARGS(eth_key->eth_src), |
782 | ETH_ADDR_ARGS(eth_key->eth_dst)); | |
783 | break; | |
784 | ||
fea393b1 | 785 | case OVS_KEY_ATTR_VLAN: |
8ddc056d BP |
786 | ds_put_char(ds, '('); |
787 | format_vlan_tci(ds, nl_attr_get_be16(a)); | |
788 | ds_put_char(ds, ')'); | |
36956a7d BP |
789 | break; |
790 | ||
df2c07f4 | 791 | case OVS_KEY_ATTR_ETHERTYPE: |
b3b5bf02 | 792 | ds_put_format(ds, "(0x%04"PRIx16")", |
36956a7d BP |
793 | ntohs(nl_attr_get_be16(a))); |
794 | break; | |
795 | ||
df2c07f4 | 796 | case OVS_KEY_ATTR_IPV4: |
36956a7d | 797 | ipv4_key = nl_attr_get(a); |
b3b5bf02 | 798 | ds_put_format(ds, "(src="IP_FMT",dst="IP_FMT",proto=%"PRIu8 |
a61680c6 | 799 | ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s)", |
36956a7d BP |
800 | IP_ARGS(&ipv4_key->ipv4_src), |
801 | IP_ARGS(&ipv4_key->ipv4_dst), | |
7257b535 | 802 | ipv4_key->ipv4_proto, ipv4_key->ipv4_tos, |
a61680c6 | 803 | ipv4_key->ipv4_ttl, |
7257b535 | 804 | ovs_frag_type_to_string(ipv4_key->ipv4_frag)); |
36956a7d BP |
805 | break; |
806 | ||
df2c07f4 | 807 | case OVS_KEY_ATTR_IPV6: { |
d31f1109 JP |
808 | char src_str[INET6_ADDRSTRLEN]; |
809 | char dst_str[INET6_ADDRSTRLEN]; | |
810 | ||
811 | ipv6_key = nl_attr_get(a); | |
812 | inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str); | |
813 | inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str); | |
814 | ||
b3b5bf02 | 815 | ds_put_format(ds, "(src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8 |
60258dcb | 816 | ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s)", |
fa8223b7 | 817 | src_str, dst_str, ntohl(ipv6_key->ipv6_label), |
60258dcb | 818 | ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass, |
a61680c6 | 819 | ipv6_key->ipv6_hlimit, |
7257b535 | 820 | ovs_frag_type_to_string(ipv6_key->ipv6_frag)); |
d31f1109 JP |
821 | break; |
822 | } | |
823 | ||
df2c07f4 | 824 | case OVS_KEY_ATTR_TCP: |
36956a7d | 825 | tcp_key = nl_attr_get(a); |
b3b5bf02 | 826 | ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")", |
36956a7d BP |
827 | ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst)); |
828 | break; | |
829 | ||
df2c07f4 | 830 | case OVS_KEY_ATTR_UDP: |
36956a7d | 831 | udp_key = nl_attr_get(a); |
b3b5bf02 | 832 | ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")", |
36956a7d BP |
833 | ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst)); |
834 | break; | |
835 | ||
df2c07f4 | 836 | case OVS_KEY_ATTR_ICMP: |
36956a7d | 837 | icmp_key = nl_attr_get(a); |
b3b5bf02 | 838 | ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")", |
36956a7d BP |
839 | icmp_key->icmp_type, icmp_key->icmp_code); |
840 | break; | |
841 | ||
df2c07f4 | 842 | case OVS_KEY_ATTR_ICMPV6: |
d31f1109 | 843 | icmpv6_key = nl_attr_get(a); |
b3b5bf02 | 844 | ds_put_format(ds, "(type=%"PRIu8",code=%"PRIu8")", |
d31f1109 JP |
845 | icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code); |
846 | break; | |
847 | ||
df2c07f4 | 848 | case OVS_KEY_ATTR_ARP: |
36956a7d | 849 | arp_key = nl_attr_get(a); |
b3b5bf02 | 850 | ds_put_format(ds, "(sip="IP_FMT",tip="IP_FMT",op=%"PRIu16"," |
bad68a99 | 851 | "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT")", |
36956a7d | 852 | IP_ARGS(&arp_key->arp_sip), IP_ARGS(&arp_key->arp_tip), |
bad68a99 JP |
853 | ntohs(arp_key->arp_op), ETH_ADDR_ARGS(arp_key->arp_sha), |
854 | ETH_ADDR_ARGS(arp_key->arp_tha)); | |
36956a7d BP |
855 | break; |
856 | ||
df2c07f4 | 857 | case OVS_KEY_ATTR_ND: { |
685a51a5 JP |
858 | char target[INET6_ADDRSTRLEN]; |
859 | ||
860 | nd_key = nl_attr_get(a); | |
861 | inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target); | |
862 | ||
b3b5bf02 | 863 | ds_put_format(ds, "(target=%s", target); |
685a51a5 JP |
864 | if (!eth_addr_is_zero(nd_key->nd_sll)) { |
865 | ds_put_format(ds, ",sll="ETH_ADDR_FMT, | |
866 | ETH_ADDR_ARGS(nd_key->nd_sll)); | |
867 | } | |
868 | if (!eth_addr_is_zero(nd_key->nd_tll)) { | |
869 | ds_put_format(ds, ",tll="ETH_ADDR_FMT, | |
870 | ETH_ADDR_ARGS(nd_key->nd_tll)); | |
871 | } | |
872 | ds_put_char(ds, ')'); | |
873 | break; | |
874 | } | |
875 | ||
7a8e9ed2 BP |
876 | case OVS_KEY_ATTR_UNSPEC: |
877 | case __OVS_KEY_ATTR_MAX: | |
36956a7d BP |
878 | default: |
879 | format_generic_odp_key(a, ds); | |
880 | break; | |
881 | } | |
882 | } | |
883 | ||
884 | /* Appends to 'ds' a string representation of the 'key_len' bytes of | |
df2c07f4 | 885 | * OVS_KEY_ATTR_* attributes in 'key'. */ |
14608a15 | 886 | void |
36956a7d | 887 | odp_flow_key_format(const struct nlattr *key, size_t key_len, struct ds *ds) |
14608a15 | 888 | { |
36956a7d BP |
889 | if (key_len) { |
890 | const struct nlattr *a; | |
891 | unsigned int left; | |
892 | ||
893 | NL_ATTR_FOR_EACH (a, left, key, key_len) { | |
894 | if (a != key) { | |
895 | ds_put_char(ds, ','); | |
896 | } | |
897 | format_odp_key_attr(a, ds); | |
898 | } | |
899 | if (left) { | |
3a8cfc50 BP |
900 | int i; |
901 | ||
36956a7d BP |
902 | if (left == key_len) { |
903 | ds_put_cstr(ds, "<empty>"); | |
904 | } | |
3a8cfc50 BP |
905 | ds_put_format(ds, ",***%u leftover bytes*** (", left); |
906 | for (i = 0; i < left; i++) { | |
907 | ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]); | |
908 | } | |
909 | ds_put_char(ds, ')'); | |
36956a7d BP |
910 | } |
911 | } else { | |
912 | ds_put_cstr(ds, "<empty>"); | |
913 | } | |
14608a15 | 914 | } |
064af421 | 915 | |
3bffc610 BP |
916 | static int |
917 | put_nd_key(int n, const char *nd_target_s, | |
918 | const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *key) | |
919 | { | |
df2c07f4 | 920 | struct ovs_key_nd nd_key; |
3bffc610 BP |
921 | |
922 | memset(&nd_key, 0, sizeof nd_key); | |
923 | if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) { | |
924 | return -EINVAL; | |
925 | } | |
926 | if (nd_sll) { | |
927 | memcpy(nd_key.nd_sll, nd_sll, ETH_ADDR_LEN); | |
928 | } | |
929 | if (nd_tll) { | |
930 | memcpy(nd_key.nd_tll, nd_tll, ETH_ADDR_LEN); | |
931 | } | |
df2c07f4 | 932 | nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, &nd_key, sizeof nd_key); |
3bffc610 BP |
933 | return n; |
934 | } | |
935 | ||
7257b535 BP |
936 | static bool |
937 | ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type) | |
938 | { | |
939 | if (!strcasecmp(s, "no")) { | |
940 | *type = OVS_FRAG_TYPE_NONE; | |
941 | } else if (!strcasecmp(s, "first")) { | |
942 | *type = OVS_FRAG_TYPE_FIRST; | |
943 | } else if (!strcasecmp(s, "later")) { | |
944 | *type = OVS_FRAG_TYPE_LATER; | |
945 | } else { | |
946 | return false; | |
947 | } | |
948 | return true; | |
949 | } | |
950 | ||
3bffc610 | 951 | static int |
44bac24b | 952 | parse_odp_key_attr(const char *s, const struct simap *port_names, |
b2a60db8 | 953 | struct ofpbuf *key) |
3bffc610 BP |
954 | { |
955 | /* Many of the sscanf calls in this function use oversized destination | |
956 | * fields because some sscanf() implementations truncate the range of %i | |
957 | * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a | |
958 | * value of 0x7fff. The other alternatives are to allow only a single | |
959 | * radix (e.g. decimal or hexadecimal) or to write more sophisticated | |
960 | * parsers. | |
961 | * | |
962 | * The tun_id parser has to use an alternative approach because there is no | |
963 | * type larger than 64 bits. */ | |
964 | ||
abff858b PS |
965 | { |
966 | unsigned long long int priority; | |
967 | int n = -1; | |
968 | ||
969 | if (sscanf(s, "priority(%lli)%n", &priority, &n) > 0 && n > 0) { | |
970 | nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority); | |
971 | return n; | |
972 | } | |
973 | } | |
974 | ||
3bffc610 BP |
975 | { |
976 | char tun_id_s[32]; | |
977 | int n = -1; | |
978 | ||
979 | if (sscanf(s, "tun_id(%31[x0123456789abcdefABCDEF])%n", | |
980 | tun_id_s, &n) > 0 && n > 0) { | |
981 | uint64_t tun_id = strtoull(tun_id_s, NULL, 0); | |
df2c07f4 | 982 | nl_msg_put_be64(key, OVS_KEY_ATTR_TUN_ID, htonll(tun_id)); |
3bffc610 BP |
983 | return n; |
984 | } | |
985 | } | |
986 | ||
35651d6a JG |
987 | { |
988 | char tun_id_s[32]; | |
35651d6a JG |
989 | int tos, ttl; |
990 | struct ovs_key_ipv4_tunnel tun_key; | |
991 | int n = -1; | |
992 | ||
993 | if (sscanf(s, "ipv4_tunnel(tun_id=%31[x0123456789abcdefABCDEF]," | |
29c7a2b2 PS |
994 | "src="IP_SCAN_FMT",dst="IP_SCAN_FMT |
995 | ",tos=%i,ttl=%i,flags%n", tun_id_s, | |
35651d6a JG |
996 | IP_SCAN_ARGS(&tun_key.ipv4_src), |
997 | IP_SCAN_ARGS(&tun_key.ipv4_dst), &tos, &ttl, | |
998 | &n) > 0 && n > 0) { | |
29c7a2b2 PS |
999 | int res; |
1000 | ||
35651d6a | 1001 | tun_key.tun_id = htonll(strtoull(tun_id_s, NULL, 0)); |
35651d6a JG |
1002 | tun_key.ipv4_tos = tos; |
1003 | tun_key.ipv4_ttl = ttl; | |
29c7a2b2 PS |
1004 | |
1005 | res = parse_flags(&s[n], tun_flag_to_string, &tun_key.tun_flags); | |
1006 | if (res < 0) { | |
1007 | return res; | |
1008 | } | |
1009 | n += res; | |
1010 | if (s[n] != ')') { | |
1011 | return -EINVAL; | |
1012 | } | |
1013 | n++; | |
1014 | ||
35651d6a JG |
1015 | memset(&tun_key.pad, 0, sizeof tun_key.pad); |
1016 | nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4_TUNNEL, &tun_key, | |
1017 | sizeof tun_key); | |
1018 | return n; | |
1019 | } | |
1020 | } | |
1021 | ||
3bffc610 BP |
1022 | { |
1023 | unsigned long long int in_port; | |
1024 | int n = -1; | |
1025 | ||
1026 | if (sscanf(s, "in_port(%lli)%n", &in_port, &n) > 0 && n > 0) { | |
df2c07f4 | 1027 | nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port); |
3bffc610 BP |
1028 | return n; |
1029 | } | |
1030 | } | |
1031 | ||
b2a60db8 BP |
1032 | if (port_names && !strncmp(s, "in_port(", 8)) { |
1033 | const char *name; | |
44bac24b | 1034 | const struct simap_node *node; |
b2a60db8 BP |
1035 | int name_len; |
1036 | ||
1037 | name = s + 8; | |
1038 | name_len = strcspn(s, ")"); | |
44bac24b | 1039 | node = simap_find_len(port_names, name, name_len); |
b2a60db8 | 1040 | if (node) { |
44bac24b | 1041 | nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, node->data); |
b2a60db8 BP |
1042 | return 8 + name_len + 1; |
1043 | } | |
1044 | } | |
1045 | ||
3bffc610 | 1046 | { |
df2c07f4 | 1047 | struct ovs_key_ethernet eth_key; |
3bffc610 BP |
1048 | int n = -1; |
1049 | ||
1050 | if (sscanf(s, | |
1051 | "eth(src="ETH_ADDR_SCAN_FMT",dst="ETH_ADDR_SCAN_FMT")%n", | |
1052 | ETH_ADDR_SCAN_ARGS(eth_key.eth_src), | |
1053 | ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n) > 0 && n > 0) { | |
df2c07f4 | 1054 | nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET, |
3bffc610 BP |
1055 | ð_key, sizeof eth_key); |
1056 | return n; | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | { | |
3bffc610 BP |
1061 | uint16_t vid; |
1062 | int pcp; | |
8ddc056d | 1063 | int cfi; |
3bffc610 BP |
1064 | int n = -1; |
1065 | ||
fea393b1 BP |
1066 | if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i)%n", &vid, &pcp, &n) > 0 |
1067 | && n > 0)) { | |
1068 | nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN, | |
1069 | htons((vid << VLAN_VID_SHIFT) | | |
8ddc056d BP |
1070 | (pcp << VLAN_PCP_SHIFT) | |
1071 | VLAN_CFI)); | |
1072 | return n; | |
1073 | } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i,cfi=%i)%n", | |
1074 | &vid, &pcp, &cfi, &n) > 0 | |
1075 | && n > 0)) { | |
1076 | nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN, | |
1077 | htons((vid << VLAN_VID_SHIFT) | | |
1078 | (pcp << VLAN_PCP_SHIFT) | | |
1079 | (cfi ? VLAN_CFI : 0))); | |
3bffc610 BP |
1080 | return n; |
1081 | } | |
1082 | } | |
1083 | ||
1084 | { | |
fac2e516 | 1085 | int eth_type; |
3bffc610 BP |
1086 | int n = -1; |
1087 | ||
fac2e516 | 1088 | if (sscanf(s, "eth_type(%i)%n", ð_type, &n) > 0 && n > 0) { |
df2c07f4 | 1089 | nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type)); |
3bffc610 BP |
1090 | return n; |
1091 | } | |
1092 | } | |
1093 | ||
1094 | { | |
1095 | ovs_be32 ipv4_src; | |
1096 | ovs_be32 ipv4_dst; | |
1097 | int ipv4_proto; | |
1098 | int ipv4_tos; | |
a61680c6 | 1099 | int ipv4_ttl; |
7257b535 BP |
1100 | char frag[8]; |
1101 | enum ovs_frag_type ipv4_frag; | |
3bffc610 BP |
1102 | int n = -1; |
1103 | ||
1104 | if (sscanf(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT"," | |
a61680c6 | 1105 | "proto=%i,tos=%i,ttl=%i,frag=%7[a-z])%n", |
7257b535 | 1106 | IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_dst), |
a61680c6 | 1107 | &ipv4_proto, &ipv4_tos, &ipv4_ttl, frag, &n) > 0 |
7257b535 BP |
1108 | && n > 0 |
1109 | && ovs_frag_type_from_string(frag, &ipv4_frag)) { | |
df2c07f4 | 1110 | struct ovs_key_ipv4 ipv4_key; |
3bffc610 | 1111 | |
3bffc610 BP |
1112 | ipv4_key.ipv4_src = ipv4_src; |
1113 | ipv4_key.ipv4_dst = ipv4_dst; | |
1114 | ipv4_key.ipv4_proto = ipv4_proto; | |
1115 | ipv4_key.ipv4_tos = ipv4_tos; | |
a61680c6 | 1116 | ipv4_key.ipv4_ttl = ipv4_ttl; |
7257b535 | 1117 | ipv4_key.ipv4_frag = ipv4_frag; |
df2c07f4 | 1118 | nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4, |
3bffc610 BP |
1119 | &ipv4_key, sizeof ipv4_key); |
1120 | return n; | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | { | |
1125 | char ipv6_src_s[IPV6_SCAN_LEN + 1]; | |
1126 | char ipv6_dst_s[IPV6_SCAN_LEN + 1]; | |
fa8223b7 | 1127 | int ipv6_label; |
3bffc610 | 1128 | int ipv6_proto; |
60258dcb | 1129 | int ipv6_tclass; |
a61680c6 | 1130 | int ipv6_hlimit; |
7257b535 BP |
1131 | char frag[8]; |
1132 | enum ovs_frag_type ipv6_frag; | |
3bffc610 BP |
1133 | int n = -1; |
1134 | ||
1135 | if (sscanf(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT"," | |
60258dcb | 1136 | "label=%i,proto=%i,tclass=%i,hlimit=%i,frag=%7[a-z])%n", |
fa8223b7 | 1137 | ipv6_src_s, ipv6_dst_s, &ipv6_label, |
60258dcb | 1138 | &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n) > 0 |
7257b535 BP |
1139 | && n > 0 |
1140 | && ovs_frag_type_from_string(frag, &ipv6_frag)) { | |
df2c07f4 | 1141 | struct ovs_key_ipv6 ipv6_key; |
3bffc610 | 1142 | |
3bffc610 BP |
1143 | if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 || |
1144 | inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) { | |
1145 | return -EINVAL; | |
1146 | } | |
fa8223b7 | 1147 | ipv6_key.ipv6_label = htonl(ipv6_label); |
3bffc610 | 1148 | ipv6_key.ipv6_proto = ipv6_proto; |
60258dcb | 1149 | ipv6_key.ipv6_tclass = ipv6_tclass; |
a61680c6 | 1150 | ipv6_key.ipv6_hlimit = ipv6_hlimit; |
7257b535 | 1151 | ipv6_key.ipv6_frag = ipv6_frag; |
df2c07f4 | 1152 | nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6, |
3bffc610 BP |
1153 | &ipv6_key, sizeof ipv6_key); |
1154 | return n; | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | { | |
1159 | int tcp_src; | |
1160 | int tcp_dst; | |
1161 | int n = -1; | |
1162 | ||
1163 | if (sscanf(s, "tcp(src=%i,dst=%i)%n",&tcp_src, &tcp_dst, &n) > 0 | |
1164 | && n > 0) { | |
df2c07f4 | 1165 | struct ovs_key_tcp tcp_key; |
3bffc610 BP |
1166 | |
1167 | tcp_key.tcp_src = htons(tcp_src); | |
1168 | tcp_key.tcp_dst = htons(tcp_dst); | |
df2c07f4 | 1169 | nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key); |
3bffc610 BP |
1170 | return n; |
1171 | } | |
1172 | } | |
1173 | ||
1174 | { | |
1175 | int udp_src; | |
1176 | int udp_dst; | |
1177 | int n = -1; | |
1178 | ||
1179 | if (sscanf(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n) > 0 | |
1180 | && n > 0) { | |
df2c07f4 | 1181 | struct ovs_key_udp udp_key; |
3bffc610 BP |
1182 | |
1183 | udp_key.udp_src = htons(udp_src); | |
1184 | udp_key.udp_dst = htons(udp_dst); | |
df2c07f4 | 1185 | nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key); |
3bffc610 BP |
1186 | return n; |
1187 | } | |
1188 | } | |
1189 | ||
1190 | { | |
1191 | int icmp_type; | |
1192 | int icmp_code; | |
1193 | int n = -1; | |
1194 | ||
1195 | if (sscanf(s, "icmp(type=%i,code=%i)%n", | |
1196 | &icmp_type, &icmp_code, &n) > 0 | |
1197 | && n > 0) { | |
df2c07f4 | 1198 | struct ovs_key_icmp icmp_key; |
3bffc610 BP |
1199 | |
1200 | icmp_key.icmp_type = icmp_type; | |
1201 | icmp_key.icmp_code = icmp_code; | |
df2c07f4 | 1202 | nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP, |
3bffc610 BP |
1203 | &icmp_key, sizeof icmp_key); |
1204 | return n; | |
1205 | } | |
1206 | } | |
1207 | ||
1208 | { | |
df2c07f4 | 1209 | struct ovs_key_icmpv6 icmpv6_key; |
3bffc610 BP |
1210 | int n = -1; |
1211 | ||
1212 | if (sscanf(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n", | |
1213 | &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,&n) > 0 | |
1214 | && n > 0) { | |
df2c07f4 | 1215 | nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6, |
3bffc610 BP |
1216 | &icmpv6_key, sizeof icmpv6_key); |
1217 | return n; | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | { | |
1222 | ovs_be32 arp_sip; | |
1223 | ovs_be32 arp_tip; | |
1224 | int arp_op; | |
1225 | uint8_t arp_sha[ETH_ADDR_LEN]; | |
1226 | uint8_t arp_tha[ETH_ADDR_LEN]; | |
1227 | int n = -1; | |
1228 | ||
1229 | if (sscanf(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT"," | |
1230 | "op=%i,sha="ETH_ADDR_SCAN_FMT",tha="ETH_ADDR_SCAN_FMT")%n", | |
1231 | IP_SCAN_ARGS(&arp_sip), | |
1232 | IP_SCAN_ARGS(&arp_tip), | |
1233 | &arp_op, | |
1234 | ETH_ADDR_SCAN_ARGS(arp_sha), | |
1235 | ETH_ADDR_SCAN_ARGS(arp_tha), &n) > 0 && n > 0) { | |
df2c07f4 | 1236 | struct ovs_key_arp arp_key; |
3bffc610 BP |
1237 | |
1238 | memset(&arp_key, 0, sizeof arp_key); | |
1239 | arp_key.arp_sip = arp_sip; | |
1240 | arp_key.arp_tip = arp_tip; | |
1241 | arp_key.arp_op = htons(arp_op); | |
1242 | memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN); | |
1243 | memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN); | |
df2c07f4 | 1244 | nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key); |
3bffc610 BP |
1245 | return n; |
1246 | } | |
1247 | } | |
1248 | ||
1249 | { | |
1250 | char nd_target_s[IPV6_SCAN_LEN + 1]; | |
1251 | uint8_t nd_sll[ETH_ADDR_LEN]; | |
1252 | uint8_t nd_tll[ETH_ADDR_LEN]; | |
1253 | int n = -1; | |
1254 | ||
1255 | if (sscanf(s, "nd(target="IPV6_SCAN_FMT")%n", | |
1256 | nd_target_s, &n) > 0 && n > 0) { | |
1257 | return put_nd_key(n, nd_target_s, NULL, NULL, key); | |
1258 | } | |
1259 | if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT")%n", | |
1260 | nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n) > 0 | |
1261 | && n > 0) { | |
1262 | return put_nd_key(n, nd_target_s, nd_sll, NULL, key); | |
1263 | } | |
1264 | if (sscanf(s, "nd(target="IPV6_SCAN_FMT",tll="ETH_ADDR_SCAN_FMT")%n", | |
1265 | nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0 | |
1266 | && n > 0) { | |
1267 | return put_nd_key(n, nd_target_s, NULL, nd_tll, key); | |
1268 | } | |
1269 | if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT"," | |
1270 | "tll="ETH_ADDR_SCAN_FMT")%n", | |
1271 | nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), | |
1272 | ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0 | |
1273 | && n > 0) { | |
1274 | return put_nd_key(n, nd_target_s, nd_sll, nd_tll, key); | |
1275 | } | |
1276 | } | |
1277 | ||
fea393b1 BP |
1278 | if (!strncmp(s, "encap(", 6)) { |
1279 | const char *start = s; | |
1280 | size_t encap; | |
1281 | ||
1282 | encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP); | |
1283 | ||
1284 | s += 6; | |
1285 | for (;;) { | |
1286 | int retval; | |
1287 | ||
1288 | s += strspn(s, ", \t\r\n"); | |
1289 | if (!*s) { | |
1290 | return -EINVAL; | |
1291 | } else if (*s == ')') { | |
1292 | break; | |
1293 | } | |
1294 | ||
becffb86 | 1295 | retval = parse_odp_key_attr(s, port_names, key); |
fea393b1 BP |
1296 | if (retval < 0) { |
1297 | return retval; | |
1298 | } | |
1299 | s += retval; | |
1300 | } | |
1301 | s++; | |
1302 | ||
1303 | nl_msg_end_nested(key, encap); | |
1304 | ||
1305 | return s - start; | |
1306 | } | |
1307 | ||
3bffc610 BP |
1308 | return -EINVAL; |
1309 | } | |
1310 | ||
df2c07f4 JP |
1311 | /* Parses the string representation of a datapath flow key, in the |
1312 | * format output by odp_flow_key_format(). Returns 0 if successful, | |
1313 | * otherwise a positive errno value. On success, the flow key is | |
1314 | * appended to 'key' as a series of Netlink attributes. On failure, no | |
1315 | * data is appended to 'key'. Either way, 'key''s data might be | |
1316 | * reallocated. | |
3bffc610 | 1317 | * |
44bac24b BP |
1318 | * If 'port_names' is nonnull, it points to an simap that maps from a port name |
1319 | * to a port number. (Port names may be used instead of port numbers in | |
1320 | * in_port.) | |
b2a60db8 | 1321 | * |
3bffc610 BP |
1322 | * On success, the attributes appended to 'key' are individually syntactically |
1323 | * valid, but they may not be valid as a sequence. 'key' might, for example, | |
34118cae | 1324 | * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */ |
3bffc610 | 1325 | int |
44bac24b | 1326 | odp_flow_key_from_string(const char *s, const struct simap *port_names, |
b2a60db8 | 1327 | struct ofpbuf *key) |
3bffc610 BP |
1328 | { |
1329 | const size_t old_size = key->size; | |
1330 | for (;;) { | |
1331 | int retval; | |
1332 | ||
7202cbe5 | 1333 | s += strspn(s, delimiters); |
3bffc610 BP |
1334 | if (!*s) { |
1335 | return 0; | |
1336 | } | |
1337 | ||
b2a60db8 | 1338 | retval = parse_odp_key_attr(s, port_names, key); |
3bffc610 BP |
1339 | if (retval < 0) { |
1340 | key->size = old_size; | |
1341 | return -retval; | |
1342 | } | |
1343 | s += retval; | |
1344 | } | |
1345 | ||
1346 | return 0; | |
1347 | } | |
1348 | ||
7257b535 | 1349 | static uint8_t |
c4f2731d | 1350 | ovs_to_odp_frag(uint8_t nw_frag) |
7257b535 | 1351 | { |
c4f2731d PS |
1352 | return (nw_frag == 0 ? OVS_FRAG_TYPE_NONE |
1353 | : nw_frag == FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST | |
1354 | : OVS_FRAG_TYPE_LATER); | |
7257b535 BP |
1355 | } |
1356 | ||
2508ac16 | 1357 | /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'. |
ddbfda84 JP |
1358 | * 'flow->in_port' is ignored (since it is likely to be an OpenFlow port |
1359 | * number rather than a datapath port number). Instead, if 'odp_in_port' | |
1360 | * is anything other than OVSP_NONE, it is included in 'buf' as the input | |
1361 | * port. | |
2508ac16 BP |
1362 | * |
1363 | * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be | |
1364 | * capable of being expanded to allow for that much space. */ | |
14608a15 | 1365 | void |
ddbfda84 JP |
1366 | odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow, |
1367 | uint32_t odp_in_port) | |
14608a15 | 1368 | { |
df2c07f4 | 1369 | struct ovs_key_ethernet *eth_key; |
fea393b1 | 1370 | size_t encap; |
36956a7d | 1371 | |
deedf7e7 BP |
1372 | if (flow->skb_priority) { |
1373 | nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, flow->skb_priority); | |
abff858b PS |
1374 | } |
1375 | ||
296e07ac JG |
1376 | if (flow->tunnel.tun_id != htonll(0)) { |
1377 | nl_msg_put_be64(buf, OVS_KEY_ATTR_TUN_ID, flow->tunnel.tun_id); | |
36956a7d BP |
1378 | } |
1379 | ||
ddbfda84 JP |
1380 | if (odp_in_port != OVSP_NONE) { |
1381 | nl_msg_put_u32(buf, OVS_KEY_ATTR_IN_PORT, odp_in_port); | |
18886b60 | 1382 | } |
36956a7d | 1383 | |
df2c07f4 | 1384 | eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET, |
36956a7d BP |
1385 | sizeof *eth_key); |
1386 | memcpy(eth_key->eth_src, flow->dl_src, ETH_ADDR_LEN); | |
1387 | memcpy(eth_key->eth_dst, flow->dl_dst, ETH_ADDR_LEN); | |
1388 | ||
8ddc056d | 1389 | if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) { |
fea393b1 | 1390 | nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN)); |
8ddc056d | 1391 | nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, flow->vlan_tci); |
fea393b1 | 1392 | encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP); |
8ddc056d BP |
1393 | if (flow->vlan_tci == htons(0)) { |
1394 | goto unencap; | |
1395 | } | |
fea393b1 BP |
1396 | } else { |
1397 | encap = 0; | |
36956a7d BP |
1398 | } |
1399 | ||
1400 | if (ntohs(flow->dl_type) < ETH_TYPE_MIN) { | |
fea393b1 | 1401 | goto unencap; |
36956a7d BP |
1402 | } |
1403 | ||
df2c07f4 | 1404 | nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, flow->dl_type); |
36956a7d BP |
1405 | |
1406 | if (flow->dl_type == htons(ETH_TYPE_IP)) { | |
df2c07f4 | 1407 | struct ovs_key_ipv4 *ipv4_key; |
36956a7d | 1408 | |
df2c07f4 | 1409 | ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4, |
36956a7d BP |
1410 | sizeof *ipv4_key); |
1411 | ipv4_key->ipv4_src = flow->nw_src; | |
1412 | ipv4_key->ipv4_dst = flow->nw_dst; | |
1413 | ipv4_key->ipv4_proto = flow->nw_proto; | |
eadef313 | 1414 | ipv4_key->ipv4_tos = flow->nw_tos; |
a61680c6 | 1415 | ipv4_key->ipv4_ttl = flow->nw_ttl; |
eadef313 | 1416 | ipv4_key->ipv4_frag = ovs_to_odp_frag(flow->nw_frag); |
d31f1109 | 1417 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { |
df2c07f4 | 1418 | struct ovs_key_ipv6 *ipv6_key; |
d31f1109 | 1419 | |
df2c07f4 | 1420 | ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6, |
d31f1109 JP |
1421 | sizeof *ipv6_key); |
1422 | memcpy(ipv6_key->ipv6_src, &flow->ipv6_src, sizeof ipv6_key->ipv6_src); | |
1423 | memcpy(ipv6_key->ipv6_dst, &flow->ipv6_dst, sizeof ipv6_key->ipv6_dst); | |
fa8223b7 | 1424 | ipv6_key->ipv6_label = flow->ipv6_label; |
d31f1109 | 1425 | ipv6_key->ipv6_proto = flow->nw_proto; |
eadef313 | 1426 | ipv6_key->ipv6_tclass = flow->nw_tos; |
a61680c6 | 1427 | ipv6_key->ipv6_hlimit = flow->nw_ttl; |
eadef313 | 1428 | ipv6_key->ipv6_frag = ovs_to_odp_frag(flow->nw_frag); |
8087f5ff MM |
1429 | } else if (flow->dl_type == htons(ETH_TYPE_ARP) || |
1430 | flow->dl_type == htons(ETH_TYPE_RARP)) { | |
df2c07f4 | 1431 | struct ovs_key_arp *arp_key; |
d31f1109 | 1432 | |
df2c07f4 | 1433 | arp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ARP, |
d31f1109 | 1434 | sizeof *arp_key); |
535d6987 | 1435 | memset(arp_key, 0, sizeof *arp_key); |
d31f1109 JP |
1436 | arp_key->arp_sip = flow->nw_src; |
1437 | arp_key->arp_tip = flow->nw_dst; | |
1438 | arp_key->arp_op = htons(flow->nw_proto); | |
1439 | memcpy(arp_key->arp_sha, flow->arp_sha, ETH_ADDR_LEN); | |
1440 | memcpy(arp_key->arp_tha, flow->arp_tha, ETH_ADDR_LEN); | |
1441 | } | |
b53055f4 | 1442 | |
7257b535 BP |
1443 | if ((flow->dl_type == htons(ETH_TYPE_IP) |
1444 | || flow->dl_type == htons(ETH_TYPE_IPV6)) | |
eadef313 | 1445 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
36956a7d | 1446 | |
6767a2cc | 1447 | if (flow->nw_proto == IPPROTO_TCP) { |
df2c07f4 | 1448 | struct ovs_key_tcp *tcp_key; |
36956a7d | 1449 | |
df2c07f4 | 1450 | tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP, |
36956a7d BP |
1451 | sizeof *tcp_key); |
1452 | tcp_key->tcp_src = flow->tp_src; | |
1453 | tcp_key->tcp_dst = flow->tp_dst; | |
6767a2cc | 1454 | } else if (flow->nw_proto == IPPROTO_UDP) { |
df2c07f4 | 1455 | struct ovs_key_udp *udp_key; |
36956a7d | 1456 | |
df2c07f4 | 1457 | udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP, |
36956a7d BP |
1458 | sizeof *udp_key); |
1459 | udp_key->udp_src = flow->tp_src; | |
1460 | udp_key->udp_dst = flow->tp_dst; | |
d31f1109 JP |
1461 | } else if (flow->dl_type == htons(ETH_TYPE_IP) |
1462 | && flow->nw_proto == IPPROTO_ICMP) { | |
df2c07f4 | 1463 | struct ovs_key_icmp *icmp_key; |
36956a7d | 1464 | |
df2c07f4 | 1465 | icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP, |
36956a7d BP |
1466 | sizeof *icmp_key); |
1467 | icmp_key->icmp_type = ntohs(flow->tp_src); | |
1468 | icmp_key->icmp_code = ntohs(flow->tp_dst); | |
d31f1109 JP |
1469 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6) |
1470 | && flow->nw_proto == IPPROTO_ICMPV6) { | |
df2c07f4 | 1471 | struct ovs_key_icmpv6 *icmpv6_key; |
d31f1109 | 1472 | |
df2c07f4 | 1473 | icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6, |
d31f1109 JP |
1474 | sizeof *icmpv6_key); |
1475 | icmpv6_key->icmpv6_type = ntohs(flow->tp_src); | |
1476 | icmpv6_key->icmpv6_code = ntohs(flow->tp_dst); | |
685a51a5 JP |
1477 | |
1478 | if (icmpv6_key->icmpv6_type == ND_NEIGHBOR_SOLICIT | |
1479 | || icmpv6_key->icmpv6_type == ND_NEIGHBOR_ADVERT) { | |
df2c07f4 | 1480 | struct ovs_key_nd *nd_key; |
685a51a5 | 1481 | |
df2c07f4 | 1482 | nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND, |
685a51a5 JP |
1483 | sizeof *nd_key); |
1484 | memcpy(nd_key->nd_target, &flow->nd_target, | |
1485 | sizeof nd_key->nd_target); | |
1486 | memcpy(nd_key->nd_sll, flow->arp_sha, ETH_ADDR_LEN); | |
1487 | memcpy(nd_key->nd_tll, flow->arp_tha, ETH_ADDR_LEN); | |
1488 | } | |
36956a7d | 1489 | } |
36956a7d | 1490 | } |
fea393b1 BP |
1491 | |
1492 | unencap: | |
1493 | if (encap) { | |
1494 | nl_msg_end_nested(buf, encap); | |
1495 | } | |
36956a7d BP |
1496 | } |
1497 | ||
b0f7b9b5 BP |
1498 | uint32_t |
1499 | odp_flow_key_hash(const struct nlattr *key, size_t key_len) | |
1500 | { | |
1501 | BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t))); | |
1502 | return hash_words((const uint32_t *) key, key_len / sizeof(uint32_t), 0); | |
1503 | } | |
1504 | ||
34118cae BP |
1505 | static void |
1506 | log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title, | |
b0f7b9b5 | 1507 | uint64_t attrs, int out_of_range_attr, |
34118cae BP |
1508 | const struct nlattr *key, size_t key_len) |
1509 | { | |
1510 | struct ds s; | |
1511 | int i; | |
1512 | ||
b0f7b9b5 | 1513 | if (VLOG_DROP_DBG(rl)) { |
34118cae BP |
1514 | return; |
1515 | } | |
1516 | ||
1517 | ds_init(&s); | |
b0f7b9b5 BP |
1518 | for (i = 0; i < 64; i++) { |
1519 | if (attrs & (UINT64_C(1) << i)) { | |
34118cae BP |
1520 | ds_put_format(&s, " %s", ovs_key_attr_to_string(i)); |
1521 | } | |
1522 | } | |
b0f7b9b5 BP |
1523 | if (out_of_range_attr) { |
1524 | ds_put_format(&s, " %d (and possibly others)", out_of_range_attr); | |
1525 | } | |
34118cae BP |
1526 | |
1527 | ds_put_cstr(&s, ": "); | |
1528 | odp_flow_key_format(key, key_len, &s); | |
1529 | ||
b0f7b9b5 | 1530 | VLOG_DBG("%s:%s", title, ds_cstr(&s)); |
34118cae BP |
1531 | ds_destroy(&s); |
1532 | } | |
1533 | ||
7257b535 | 1534 | static bool |
9e44d715 | 1535 | odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow) |
7257b535 | 1536 | { |
34118cae BP |
1537 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
1538 | ||
9e44d715 | 1539 | if (odp_frag > OVS_FRAG_TYPE_LATER) { |
b0f7b9b5 | 1540 | VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag); |
7257b535 BP |
1541 | return false; |
1542 | } | |
1543 | ||
7257b535 | 1544 | if (odp_frag != OVS_FRAG_TYPE_NONE) { |
eadef313 | 1545 | flow->nw_frag |= FLOW_NW_FRAG_ANY; |
7257b535 | 1546 | if (odp_frag == OVS_FRAG_TYPE_LATER) { |
eadef313 | 1547 | flow->nw_frag |= FLOW_NW_FRAG_LATER; |
7257b535 BP |
1548 | } |
1549 | } | |
1550 | return true; | |
1551 | } | |
1552 | ||
b0f7b9b5 | 1553 | static bool |
fea393b1 | 1554 | parse_flow_nlattrs(const struct nlattr *key, size_t key_len, |
b0f7b9b5 BP |
1555 | const struct nlattr *attrs[], uint64_t *present_attrsp, |
1556 | int *out_of_range_attrp) | |
36956a7d | 1557 | { |
b0f7b9b5 | 1558 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10); |
36956a7d | 1559 | const struct nlattr *nla; |
34118cae | 1560 | uint64_t present_attrs; |
36956a7d BP |
1561 | size_t left; |
1562 | ||
34118cae | 1563 | present_attrs = 0; |
b0f7b9b5 | 1564 | *out_of_range_attrp = 0; |
36956a7d | 1565 | NL_ATTR_FOR_EACH (nla, left, key, key_len) { |
34118cae BP |
1566 | uint16_t type = nl_attr_type(nla); |
1567 | size_t len = nl_attr_get_size(nla); | |
1568 | int expected_len = odp_flow_key_attr_len(type); | |
1569 | ||
b0f7b9b5 BP |
1570 | if (len != expected_len && expected_len >= 0) { |
1571 | VLOG_ERR_RL(&rl, "attribute %s has length %zu but should have " | |
1572 | "length %d", ovs_key_attr_to_string(type), | |
1573 | len, expected_len); | |
1574 | return false; | |
34118cae BP |
1575 | } |
1576 | ||
b0f7b9b5 BP |
1577 | if (type >= CHAR_BIT * sizeof present_attrs) { |
1578 | *out_of_range_attrp = type; | |
1579 | } else { | |
1580 | if (present_attrs & (UINT64_C(1) << type)) { | |
1581 | VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key", | |
1582 | ovs_key_attr_to_string(type)); | |
1583 | return false; | |
1584 | } | |
1585 | ||
1586 | present_attrs |= UINT64_C(1) << type; | |
1587 | attrs[type] = nla; | |
1588 | } | |
34118cae BP |
1589 | } |
1590 | if (left) { | |
1591 | VLOG_ERR_RL(&rl, "trailing garbage in flow key"); | |
b0f7b9b5 | 1592 | return false; |
34118cae BP |
1593 | } |
1594 | ||
fea393b1 | 1595 | *present_attrsp = present_attrs; |
b0f7b9b5 | 1596 | return true; |
fea393b1 BP |
1597 | } |
1598 | ||
b0f7b9b5 BP |
1599 | static enum odp_key_fitness |
1600 | check_expectations(uint64_t present_attrs, int out_of_range_attr, | |
1601 | uint64_t expected_attrs, | |
fea393b1 BP |
1602 | const struct nlattr *key, size_t key_len) |
1603 | { | |
1604 | uint64_t missing_attrs; | |
1605 | uint64_t extra_attrs; | |
1606 | ||
1607 | missing_attrs = expected_attrs & ~present_attrs; | |
1608 | if (missing_attrs) { | |
b0f7b9b5 BP |
1609 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10); |
1610 | log_odp_key_attributes(&rl, "expected but not present", | |
1611 | missing_attrs, 0, key, key_len); | |
1612 | return ODP_FIT_TOO_LITTLE; | |
fea393b1 BP |
1613 | } |
1614 | ||
1615 | extra_attrs = present_attrs & ~expected_attrs; | |
b0f7b9b5 BP |
1616 | if (extra_attrs || out_of_range_attr) { |
1617 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10); | |
1618 | log_odp_key_attributes(&rl, "present but not expected", | |
1619 | extra_attrs, out_of_range_attr, key, key_len); | |
1620 | return ODP_FIT_TOO_MUCH; | |
fea393b1 BP |
1621 | } |
1622 | ||
b0f7b9b5 | 1623 | return ODP_FIT_PERFECT; |
fea393b1 BP |
1624 | } |
1625 | ||
b0f7b9b5 BP |
1626 | static bool |
1627 | parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1], | |
1628 | uint64_t present_attrs, uint64_t *expected_attrs, | |
1629 | struct flow *flow) | |
fea393b1 BP |
1630 | { |
1631 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
36956a7d | 1632 | |
fea393b1 | 1633 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) { |
34118cae BP |
1634 | flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]); |
1635 | if (ntohs(flow->dl_type) < 1536) { | |
1636 | VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key", | |
1637 | ntohs(flow->dl_type)); | |
b0f7b9b5 | 1638 | return false; |
34118cae | 1639 | } |
b0f7b9b5 | 1640 | *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE; |
34118cae BP |
1641 | } else { |
1642 | flow->dl_type = htons(FLOW_DL_TYPE_NONE); | |
1643 | } | |
b0f7b9b5 BP |
1644 | return true; |
1645 | } | |
1646 | ||
1647 | static enum odp_key_fitness | |
1648 | parse_l3_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1], | |
1649 | uint64_t present_attrs, int out_of_range_attr, | |
1650 | uint64_t expected_attrs, struct flow *flow, | |
1651 | const struct nlattr *key, size_t key_len) | |
1652 | { | |
1653 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
36956a7d | 1654 | |
34118cae BP |
1655 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
1656 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4; | |
fea393b1 | 1657 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) { |
34118cae | 1658 | const struct ovs_key_ipv4 *ipv4_key; |
36956a7d | 1659 | |
34118cae | 1660 | ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]); |
36956a7d BP |
1661 | flow->nw_src = ipv4_key->ipv4_src; |
1662 | flow->nw_dst = ipv4_key->ipv4_dst; | |
1663 | flow->nw_proto = ipv4_key->ipv4_proto; | |
eadef313 | 1664 | flow->nw_tos = ipv4_key->ipv4_tos; |
a61680c6 | 1665 | flow->nw_ttl = ipv4_key->ipv4_ttl; |
9e44d715 | 1666 | if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) { |
b0f7b9b5 | 1667 | return ODP_FIT_ERROR; |
36956a7d | 1668 | } |
34118cae BP |
1669 | } |
1670 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { | |
1671 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6; | |
fea393b1 | 1672 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) { |
34118cae | 1673 | const struct ovs_key_ipv6 *ipv6_key; |
36956a7d | 1674 | |
34118cae | 1675 | ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]); |
d31f1109 JP |
1676 | memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src); |
1677 | memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst); | |
fa8223b7 | 1678 | flow->ipv6_label = ipv6_key->ipv6_label; |
d31f1109 | 1679 | flow->nw_proto = ipv6_key->ipv6_proto; |
eadef313 | 1680 | flow->nw_tos = ipv6_key->ipv6_tclass; |
a61680c6 | 1681 | flow->nw_ttl = ipv6_key->ipv6_hlimit; |
9e44d715 | 1682 | if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) { |
b0f7b9b5 | 1683 | return ODP_FIT_ERROR; |
d31f1109 | 1684 | } |
34118cae | 1685 | } |
8087f5ff MM |
1686 | } else if (flow->dl_type == htons(ETH_TYPE_ARP) || |
1687 | flow->dl_type == htons(ETH_TYPE_RARP)) { | |
34118cae | 1688 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP; |
fea393b1 | 1689 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) { |
34118cae | 1690 | const struct ovs_key_arp *arp_key; |
d31f1109 | 1691 | |
34118cae | 1692 | arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]); |
36956a7d BP |
1693 | flow->nw_src = arp_key->arp_sip; |
1694 | flow->nw_dst = arp_key->arp_tip; | |
1695 | if (arp_key->arp_op & htons(0xff00)) { | |
34118cae BP |
1696 | VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow " |
1697 | "key", ntohs(arp_key->arp_op)); | |
b0f7b9b5 | 1698 | return ODP_FIT_ERROR; |
36956a7d BP |
1699 | } |
1700 | flow->nw_proto = ntohs(arp_key->arp_op); | |
bad68a99 JP |
1701 | memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN); |
1702 | memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN); | |
36956a7d | 1703 | } |
36956a7d | 1704 | } |
36956a7d | 1705 | |
34118cae BP |
1706 | if (flow->nw_proto == IPPROTO_TCP |
1707 | && (flow->dl_type == htons(ETH_TYPE_IP) || | |
1708 | flow->dl_type == htons(ETH_TYPE_IPV6)) | |
1709 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { | |
1710 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP; | |
fea393b1 | 1711 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) { |
34118cae | 1712 | const struct ovs_key_tcp *tcp_key; |
36956a7d | 1713 | |
34118cae BP |
1714 | tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]); |
1715 | flow->tp_src = tcp_key->tcp_src; | |
1716 | flow->tp_dst = tcp_key->tcp_dst; | |
7257b535 | 1717 | } |
34118cae BP |
1718 | } else if (flow->nw_proto == IPPROTO_UDP |
1719 | && (flow->dl_type == htons(ETH_TYPE_IP) || | |
1720 | flow->dl_type == htons(ETH_TYPE_IPV6)) | |
1721 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { | |
1722 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP; | |
fea393b1 | 1723 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) { |
34118cae BP |
1724 | const struct ovs_key_udp *udp_key; |
1725 | ||
1726 | udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]); | |
1727 | flow->tp_src = udp_key->udp_src; | |
1728 | flow->tp_dst = udp_key->udp_dst; | |
d31f1109 | 1729 | } |
34118cae BP |
1730 | } else if (flow->nw_proto == IPPROTO_ICMP |
1731 | && flow->dl_type == htons(ETH_TYPE_IP) | |
1732 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { | |
1733 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP; | |
fea393b1 | 1734 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) { |
34118cae BP |
1735 | const struct ovs_key_icmp *icmp_key; |
1736 | ||
1737 | icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]); | |
1738 | flow->tp_src = htons(icmp_key->icmp_type); | |
1739 | flow->tp_dst = htons(icmp_key->icmp_code); | |
685a51a5 | 1740 | } |
34118cae BP |
1741 | } else if (flow->nw_proto == IPPROTO_ICMPV6 |
1742 | && flow->dl_type == htons(ETH_TYPE_IPV6) | |
1743 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { | |
1744 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6; | |
fea393b1 | 1745 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) { |
34118cae BP |
1746 | const struct ovs_key_icmpv6 *icmpv6_key; |
1747 | ||
1748 | icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]); | |
1749 | flow->tp_src = htons(icmpv6_key->icmpv6_type); | |
1750 | flow->tp_dst = htons(icmpv6_key->icmpv6_code); | |
685a51a5 | 1751 | |
34118cae BP |
1752 | if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) || |
1753 | flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) { | |
1754 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND; | |
fea393b1 | 1755 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) { |
34118cae BP |
1756 | const struct ovs_key_nd *nd_key; |
1757 | ||
1758 | nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]); | |
1759 | memcpy(&flow->nd_target, nd_key->nd_target, | |
1760 | sizeof flow->nd_target); | |
1761 | memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN); | |
1762 | memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN); | |
1763 | } | |
1764 | } | |
7257b535 | 1765 | } |
34118cae | 1766 | } |
7257b535 | 1767 | |
b0f7b9b5 BP |
1768 | return check_expectations(present_attrs, out_of_range_attr, expected_attrs, |
1769 | key, key_len); | |
1770 | } | |
1771 | ||
1772 | /* Parse 802.1Q header then encapsulated L3 attributes. */ | |
1773 | static enum odp_key_fitness | |
1774 | parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1], | |
1775 | uint64_t present_attrs, int out_of_range_attr, | |
1776 | uint64_t expected_attrs, struct flow *flow, | |
1777 | const struct nlattr *key, size_t key_len) | |
1778 | { | |
1779 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1780 | ||
1781 | const struct nlattr *encap | |
1782 | = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP) | |
1783 | ? attrs[OVS_KEY_ATTR_ENCAP] : NULL); | |
1784 | enum odp_key_fitness encap_fitness; | |
1785 | enum odp_key_fitness fitness; | |
1786 | ovs_be16 tci; | |
1787 | ||
1788 | /* Calulate fitness of outer attributes. */ | |
1789 | expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) | | |
1790 | (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)); | |
1791 | fitness = check_expectations(present_attrs, out_of_range_attr, | |
1792 | expected_attrs, key, key_len); | |
1793 | ||
1794 | /* Get the VLAN TCI value. */ | |
1795 | if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) { | |
1796 | return ODP_FIT_TOO_LITTLE; | |
1797 | } | |
1798 | tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]); | |
1799 | if (tci == htons(0)) { | |
1800 | /* Corner case for a truncated 802.1Q header. */ | |
1801 | if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) { | |
1802 | return ODP_FIT_TOO_MUCH; | |
1803 | } | |
1804 | return fitness; | |
1805 | } else if (!(tci & htons(VLAN_CFI))) { | |
1806 | VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero " | |
1807 | "but CFI bit is not set", ntohs(tci)); | |
1808 | return ODP_FIT_ERROR; | |
1809 | } | |
1810 | ||
1811 | /* Set vlan_tci. | |
1812 | * Remove the TPID from dl_type since it's not the real Ethertype. */ | |
1813 | flow->vlan_tci = tci; | |
1814 | flow->dl_type = htons(0); | |
1815 | ||
1816 | /* Now parse the encapsulated attributes. */ | |
1817 | if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap), | |
1818 | attrs, &present_attrs, &out_of_range_attr)) { | |
1819 | return ODP_FIT_ERROR; | |
1820 | } | |
1821 | expected_attrs = 0; | |
1822 | ||
1823 | if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) { | |
1824 | return ODP_FIT_ERROR; | |
1825 | } | |
1826 | encap_fitness = parse_l3_onward(attrs, present_attrs, out_of_range_attr, | |
1827 | expected_attrs, flow, key, key_len); | |
1828 | ||
1829 | /* The overall fitness is the worse of the outer and inner attributes. */ | |
1830 | return MAX(fitness, encap_fitness); | |
1831 | } | |
1832 | ||
1833 | /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow | |
1834 | * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well | |
1835 | * 'key' fits our expectations for what a flow key should contain. | |
1836 | * | |
ddbfda84 JP |
1837 | * The 'in_port' will be the datapath's understanding of the port. The |
1838 | * caller will need to translate with odp_port_to_ofp_port() if the | |
1839 | * OpenFlow port is needed. | |
1840 | * | |
b0f7b9b5 BP |
1841 | * This function doesn't take the packet itself as an argument because none of |
1842 | * the currently understood OVS_KEY_ATTR_* attributes require it. Currently, | |
1843 | * it is always possible to infer which additional attribute(s) should appear | |
1844 | * by looking at the attributes for lower-level protocols, e.g. if the network | |
1845 | * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we | |
1846 | * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it | |
1847 | * must be absent. */ | |
1848 | enum odp_key_fitness | |
1849 | odp_flow_key_to_flow(const struct nlattr *key, size_t key_len, | |
1850 | struct flow *flow) | |
1851 | { | |
b0f7b9b5 BP |
1852 | const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1]; |
1853 | uint64_t expected_attrs; | |
1854 | uint64_t present_attrs; | |
1855 | int out_of_range_attr; | |
1856 | ||
1857 | memset(flow, 0, sizeof *flow); | |
1858 | ||
1859 | /* Parse attributes. */ | |
1860 | if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs, | |
1861 | &out_of_range_attr)) { | |
1862 | return ODP_FIT_ERROR; | |
1863 | } | |
1864 | expected_attrs = 0; | |
1865 | ||
1866 | /* Metadata. */ | |
1867 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) { | |
deedf7e7 | 1868 | flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]); |
b0f7b9b5 BP |
1869 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY; |
1870 | } | |
1871 | ||
1872 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUN_ID)) { | |
296e07ac | 1873 | flow->tunnel.tun_id = nl_attr_get_be64(attrs[OVS_KEY_ATTR_TUN_ID]); |
b0f7b9b5 BP |
1874 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUN_ID; |
1875 | } | |
1876 | ||
1877 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) { | |
ddbfda84 | 1878 | flow->in_port = nl_attr_get_u32(attrs[OVS_KEY_ATTR_IN_PORT]); |
b0f7b9b5 BP |
1879 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT; |
1880 | } else { | |
ddbfda84 | 1881 | flow->in_port = OVSP_NONE; |
b0f7b9b5 BP |
1882 | } |
1883 | ||
1884 | /* Ethernet header. */ | |
1885 | if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) { | |
1886 | const struct ovs_key_ethernet *eth_key; | |
1887 | ||
1888 | eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]); | |
1889 | memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN); | |
1890 | memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN); | |
1891 | } | |
1892 | expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET; | |
1893 | ||
1894 | /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */ | |
1895 | if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) { | |
1896 | return ODP_FIT_ERROR; | |
1897 | } | |
1898 | ||
1899 | if (flow->dl_type == htons(ETH_TYPE_VLAN)) { | |
1900 | return parse_8021q_onward(attrs, present_attrs, out_of_range_attr, | |
1901 | expected_attrs, flow, key, key_len); | |
1902 | } | |
1903 | return parse_l3_onward(attrs, present_attrs, out_of_range_attr, | |
1904 | expected_attrs, flow, key, key_len); | |
14608a15 | 1905 | } |
39db78a0 | 1906 | |
6814e51f BP |
1907 | /* Returns 'fitness' as a string, for use in debug messages. */ |
1908 | const char * | |
1909 | odp_key_fitness_to_string(enum odp_key_fitness fitness) | |
1910 | { | |
1911 | switch (fitness) { | |
1912 | case ODP_FIT_PERFECT: | |
1913 | return "OK"; | |
1914 | case ODP_FIT_TOO_MUCH: | |
1915 | return "too_much"; | |
1916 | case ODP_FIT_TOO_LITTLE: | |
1917 | return "too_little"; | |
1918 | case ODP_FIT_ERROR: | |
1919 | return "error"; | |
1920 | default: | |
1921 | return "<unknown>"; | |
1922 | } | |
1923 | } | |
1924 | ||
39db78a0 BP |
1925 | /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies |
1926 | * Netlink PID 'pid'. If 'cookie' is nonnull, adds a userdata attribute whose | |
1927 | * contents contains 'cookie' and returns the offset within 'odp_actions' of | |
1928 | * the start of the cookie. (If 'cookie' is null, then the return value is not | |
1929 | * meaningful.) */ | |
1930 | size_t | |
1673e0e4 | 1931 | odp_put_userspace_action(uint32_t pid, const union user_action_cookie *cookie, |
39db78a0 BP |
1932 | struct ofpbuf *odp_actions) |
1933 | { | |
1934 | size_t offset; | |
1935 | ||
1936 | offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE); | |
1937 | nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid); | |
1938 | if (cookie) { | |
1939 | nl_msg_put_unspec(odp_actions, OVS_USERSPACE_ATTR_USERDATA, | |
1940 | cookie, sizeof *cookie); | |
1941 | } | |
1942 | nl_msg_end_nested(odp_actions, offset); | |
1943 | ||
1944 | return cookie ? odp_actions->size - NLA_ALIGN(sizeof *cookie) : 0; | |
1945 | } | |
5bbda0aa EJ |
1946 | \f |
1947 | /* The commit_odp_actions() function and its helpers. */ | |
1948 | ||
1949 | static void | |
1950 | commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type, | |
1951 | const void *key, size_t key_size) | |
1952 | { | |
1953 | size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET); | |
1954 | nl_msg_put_unspec(odp_actions, key_type, key, key_size); | |
1955 | nl_msg_end_nested(odp_actions, offset); | |
1956 | } | |
1957 | ||
1958 | static void | |
1959 | commit_set_tun_id_action(const struct flow *flow, struct flow *base, | |
1960 | struct ofpbuf *odp_actions) | |
1961 | { | |
296e07ac | 1962 | if (base->tunnel.tun_id == flow->tunnel.tun_id) { |
5bbda0aa EJ |
1963 | return; |
1964 | } | |
296e07ac | 1965 | base->tunnel.tun_id = flow->tunnel.tun_id; |
5bbda0aa EJ |
1966 | |
1967 | commit_set_action(odp_actions, OVS_KEY_ATTR_TUN_ID, | |
296e07ac | 1968 | &base->tunnel.tun_id, sizeof(base->tunnel.tun_id)); |
5bbda0aa EJ |
1969 | } |
1970 | ||
1971 | static void | |
1972 | commit_set_ether_addr_action(const struct flow *flow, struct flow *base, | |
1973 | struct ofpbuf *odp_actions) | |
1974 | { | |
1975 | struct ovs_key_ethernet eth_key; | |
1976 | ||
1977 | if (eth_addr_equals(base->dl_src, flow->dl_src) && | |
1978 | eth_addr_equals(base->dl_dst, flow->dl_dst)) { | |
1979 | return; | |
1980 | } | |
1981 | ||
1982 | memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN); | |
1983 | memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN); | |
1984 | ||
1985 | memcpy(eth_key.eth_src, base->dl_src, ETH_ADDR_LEN); | |
1986 | memcpy(eth_key.eth_dst, base->dl_dst, ETH_ADDR_LEN); | |
1987 | ||
1988 | commit_set_action(odp_actions, OVS_KEY_ATTR_ETHERNET, | |
1989 | ð_key, sizeof(eth_key)); | |
1990 | } | |
1991 | ||
1992 | static void | |
1993 | commit_vlan_action(const struct flow *flow, struct flow *base, | |
1994 | struct ofpbuf *odp_actions) | |
1995 | { | |
1996 | if (base->vlan_tci == flow->vlan_tci) { | |
1997 | return; | |
1998 | } | |
1999 | ||
2000 | if (base->vlan_tci & htons(VLAN_CFI)) { | |
2001 | nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN); | |
2002 | } | |
2003 | ||
2004 | if (flow->vlan_tci & htons(VLAN_CFI)) { | |
2005 | struct ovs_action_push_vlan vlan; | |
2006 | ||
2007 | vlan.vlan_tpid = htons(ETH_TYPE_VLAN); | |
2008 | vlan.vlan_tci = flow->vlan_tci; | |
2009 | nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN, | |
2010 | &vlan, sizeof vlan); | |
2011 | } | |
2012 | base->vlan_tci = flow->vlan_tci; | |
2013 | } | |
2014 | ||
2015 | static void | |
c4f2731d | 2016 | commit_set_ipv4_action(const struct flow *flow, struct flow *base, |
5bbda0aa EJ |
2017 | struct ofpbuf *odp_actions) |
2018 | { | |
2019 | struct ovs_key_ipv4 ipv4_key; | |
2020 | ||
5bbda0aa EJ |
2021 | if (base->nw_src == flow->nw_src && |
2022 | base->nw_dst == flow->nw_dst && | |
2023 | base->nw_tos == flow->nw_tos && | |
2024 | base->nw_ttl == flow->nw_ttl && | |
2025 | base->nw_frag == flow->nw_frag) { | |
2026 | return; | |
2027 | } | |
2028 | ||
2029 | ipv4_key.ipv4_src = base->nw_src = flow->nw_src; | |
2030 | ipv4_key.ipv4_dst = base->nw_dst = flow->nw_dst; | |
2031 | ipv4_key.ipv4_tos = base->nw_tos = flow->nw_tos; | |
2032 | ipv4_key.ipv4_ttl = base->nw_ttl = flow->nw_ttl; | |
2033 | ipv4_key.ipv4_proto = base->nw_proto; | |
c4f2731d | 2034 | ipv4_key.ipv4_frag = ovs_to_odp_frag(base->nw_frag); |
5bbda0aa EJ |
2035 | |
2036 | commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4, | |
2037 | &ipv4_key, sizeof(ipv4_key)); | |
2038 | } | |
2039 | ||
c4f2731d PS |
2040 | static void |
2041 | commit_set_ipv6_action(const struct flow *flow, struct flow *base, | |
2042 | struct ofpbuf *odp_actions) | |
2043 | { | |
2044 | struct ovs_key_ipv6 ipv6_key; | |
2045 | ||
2046 | if (ipv6_addr_equals(&base->ipv6_src, &flow->ipv6_src) && | |
2047 | ipv6_addr_equals(&base->ipv6_dst, &flow->ipv6_dst) && | |
2048 | base->ipv6_label == flow->ipv6_label && | |
2049 | base->nw_tos == flow->nw_tos && | |
2050 | base->nw_ttl == flow->nw_ttl && | |
2051 | base->nw_frag == flow->nw_frag) { | |
2052 | return; | |
2053 | } | |
2054 | ||
2055 | base->ipv6_src = flow->ipv6_src; | |
2056 | memcpy(&ipv6_key.ipv6_src, &base->ipv6_src, sizeof(ipv6_key.ipv6_src)); | |
2057 | base->ipv6_dst = flow->ipv6_dst; | |
2058 | memcpy(&ipv6_key.ipv6_dst, &base->ipv6_dst, sizeof(ipv6_key.ipv6_dst)); | |
2059 | ||
2060 | ipv6_key.ipv6_label = base->ipv6_label = flow->ipv6_label; | |
2061 | ipv6_key.ipv6_tclass = base->nw_tos = flow->nw_tos; | |
2062 | ipv6_key.ipv6_hlimit = base->nw_ttl = flow->nw_ttl; | |
2063 | ipv6_key.ipv6_proto = base->nw_proto; | |
2064 | ipv6_key.ipv6_frag = ovs_to_odp_frag(base->nw_frag); | |
2065 | ||
2066 | commit_set_action(odp_actions, OVS_KEY_ATTR_IPV6, | |
2067 | &ipv6_key, sizeof(ipv6_key)); | |
2068 | } | |
2069 | ||
2070 | static void | |
2071 | commit_set_nw_action(const struct flow *flow, struct flow *base, | |
2072 | struct ofpbuf *odp_actions) | |
2073 | { | |
2074 | /* Check if flow really have an IP header. */ | |
2075 | if (!flow->nw_proto) { | |
2076 | return; | |
2077 | } | |
2078 | ||
2079 | if (base->dl_type == htons(ETH_TYPE_IP)) { | |
2080 | commit_set_ipv4_action(flow, base, odp_actions); | |
2081 | } else if (base->dl_type == htons(ETH_TYPE_IPV6)) { | |
2082 | commit_set_ipv6_action(flow, base, odp_actions); | |
2083 | } | |
2084 | } | |
2085 | ||
5bbda0aa EJ |
2086 | static void |
2087 | commit_set_port_action(const struct flow *flow, struct flow *base, | |
2088 | struct ofpbuf *odp_actions) | |
2089 | { | |
6e9bea4d | 2090 | if (!base->tp_src && !base->tp_dst) { |
5bbda0aa EJ |
2091 | return; |
2092 | } | |
2093 | ||
2094 | if (base->tp_src == flow->tp_src && | |
2095 | base->tp_dst == flow->tp_dst) { | |
2096 | return; | |
2097 | } | |
2098 | ||
2099 | if (flow->nw_proto == IPPROTO_TCP) { | |
2100 | struct ovs_key_tcp port_key; | |
2101 | ||
2102 | port_key.tcp_src = base->tp_src = flow->tp_src; | |
2103 | port_key.tcp_dst = base->tp_dst = flow->tp_dst; | |
2104 | ||
2105 | commit_set_action(odp_actions, OVS_KEY_ATTR_TCP, | |
2106 | &port_key, sizeof(port_key)); | |
2107 | ||
2108 | } else if (flow->nw_proto == IPPROTO_UDP) { | |
2109 | struct ovs_key_udp port_key; | |
2110 | ||
2111 | port_key.udp_src = base->tp_src = flow->tp_src; | |
2112 | port_key.udp_dst = base->tp_dst = flow->tp_dst; | |
2113 | ||
2114 | commit_set_action(odp_actions, OVS_KEY_ATTR_UDP, | |
2115 | &port_key, sizeof(port_key)); | |
2116 | } | |
2117 | } | |
2118 | ||
2119 | static void | |
2120 | commit_set_priority_action(const struct flow *flow, struct flow *base, | |
2121 | struct ofpbuf *odp_actions) | |
2122 | { | |
deedf7e7 | 2123 | if (base->skb_priority == flow->skb_priority) { |
5bbda0aa EJ |
2124 | return; |
2125 | } | |
deedf7e7 | 2126 | base->skb_priority = flow->skb_priority; |
5bbda0aa EJ |
2127 | |
2128 | commit_set_action(odp_actions, OVS_KEY_ATTR_PRIORITY, | |
deedf7e7 | 2129 | &base->skb_priority, sizeof(base->skb_priority)); |
5bbda0aa EJ |
2130 | } |
2131 | ||
2132 | /* If any of the flow key data that ODP actions can modify are different in | |
2133 | * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow | |
2134 | * key from 'base' into 'flow', and then changes 'base' the same way. */ | |
2135 | void | |
2136 | commit_odp_actions(const struct flow *flow, struct flow *base, | |
2137 | struct ofpbuf *odp_actions) | |
2138 | { | |
2139 | commit_set_tun_id_action(flow, base, odp_actions); | |
2140 | commit_set_ether_addr_action(flow, base, odp_actions); | |
2141 | commit_vlan_action(flow, base, odp_actions); | |
2142 | commit_set_nw_action(flow, base, odp_actions); | |
2143 | commit_set_port_action(flow, base, odp_actions); | |
2144 | commit_set_priority_action(flow, base, odp_actions); | |
2145 | } |