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Commit | Line | Data |
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68d5ba54 SH |
1 | /* |
2 | * m_action.c Action Management | |
3 | * | |
4 | * This program is free software; you can distribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
ae665a52 SH |
9 | * Authors: J Hadi Salim (hadi@cyberus.ca) |
10 | * | |
68d5ba54 SH |
11 | * TODO: |
12 | * - parse to be passed a filedescriptor for logging purposes | |
13 | * | |
14 | */ | |
15 | ||
16 | #include <stdio.h> | |
17 | #include <stdlib.h> | |
18 | #include <unistd.h> | |
19 | #include <syslog.h> | |
20 | #include <fcntl.h> | |
21 | #include <sys/socket.h> | |
22 | #include <netinet/in.h> | |
23 | #include <arpa/inet.h> | |
24 | #include <string.h> | |
25 | #include <dlfcn.h> | |
26 | ||
27 | #include "utils.h" | |
c1027a75 | 28 | #include "tc_common.h" |
68d5ba54 SH |
29 | #include "tc_util.h" |
30 | ||
68d5ba54 SH |
31 | static struct action_util * action_list; |
32 | #ifdef CONFIG_GACT | |
33 | int gact_ld = 0 ; //fuckin backward compatibility | |
34 | #endif | |
68d5ba54 SH |
35 | int tab_flush = 0; |
36 | ||
d1f28cf1 | 37 | static void act_usage(void) |
68d5ba54 | 38 | { |
f1e4f042 | 39 | /*XXX: In the near future add a action->print_help to improve |
40 | * usability | |
41 | * This would mean new tc will not be backward compatible | |
42 | * with any action .so from the old days. But if someone really | |
43 | * does that, they would know how to fix this .. | |
44 | * | |
302d3fb7 | 45 | */ |
f1e4f042 | 46 | fprintf (stderr, "usage: tc actions <ACTSPECOP>*\n"); |
47 | fprintf(stderr, | |
48 | "Where: \tACTSPECOP := ACR | GD | FL\n" | |
302d3fb7 SH |
49 | "\tACR := add | change | replace <ACTSPEC>* \n" |
50 | "\tGD := get | delete | <ACTISPEC>*\n" | |
51 | "\tFL := ls | list | flush | <ACTNAMESPEC>\n" | |
52 | "\tACTNAMESPEC := action <ACTNAME>\n" | |
53 | "\tACTISPEC := <ACTNAMESPEC> <INDEXSPEC>\n" | |
54 | "\tACTSPEC := action <ACTDETAIL> [INDEXSPEC]\n" | |
55 | "\tINDEXSPEC := index <32 bit indexvalue>\n" | |
56 | "\tACTDETAIL := <ACTNAME> <ACTPARAMS>\n" | |
57 | "\t\tExample ACTNAME is gact, mirred etc\n" | |
58 | "\t\tEach action has its own parameters (ACTPARAMS)\n" | |
59 | "\n"); | |
60 | ||
ebf32083 | 61 | exit(-1); |
68d5ba54 SH |
62 | } |
63 | ||
64 | static int print_noaopt(struct action_util *au, FILE *f, struct rtattr *opt) | |
65 | { | |
66 | if (opt && RTA_PAYLOAD(opt)) | |
ae665a52 | 67 | fprintf(f, "[Unknown action, optlen=%u] ", |
bb6a21a4 | 68 | (unsigned) RTA_PAYLOAD(opt)); |
68d5ba54 SH |
69 | return 0; |
70 | } | |
71 | ||
72 | static int parse_noaopt(struct action_util *au, int *argc_p, char ***argv_p, int code, struct nlmsghdr *n) | |
73 | { | |
74 | int argc = *argc_p; | |
75 | char **argv = *argv_p; | |
76 | ||
77 | if (argc) { | |
78 | fprintf(stderr, "Unknown action \"%s\", hence option \"%s\" is unparsable\n", au->id, *argv); | |
79 | } else { | |
80 | fprintf(stderr, "Unknown action \"%s\"\n", au->id); | |
81 | } | |
82 | return -1; | |
83 | } | |
84 | ||
d1f28cf1 | 85 | static struct action_util *get_action_kind(char *str) |
68d5ba54 | 86 | { |
cda4026c | 87 | static void *aBODY; |
68d5ba54 SH |
88 | void *dlh; |
89 | char buf[256]; | |
90 | struct action_util *a; | |
91 | #ifdef CONFIG_GACT | |
92 | int looked4gact = 0; | |
93 | restart_s: | |
94 | #endif | |
95 | for (a = action_list; a; a = a->next) { | |
96 | if (strcmp(a->id, str) == 0) | |
97 | return a; | |
98 | } | |
99 | ||
ab814d63 | 100 | snprintf(buf, sizeof(buf), "%s/m_%s.so", get_tc_lib(), str); |
02833d1b | 101 | dlh = dlopen(buf, RTLD_LAZY | RTLD_GLOBAL); |
68d5ba54 SH |
102 | if (dlh == NULL) { |
103 | dlh = aBODY; | |
104 | if (dlh == NULL) { | |
105 | dlh = aBODY = dlopen(NULL, RTLD_LAZY); | |
106 | if (dlh == NULL) | |
107 | goto noexist; | |
108 | } | |
109 | } | |
110 | ||
95812b56 | 111 | snprintf(buf, sizeof(buf), "%s_action_util", str); |
68d5ba54 SH |
112 | a = dlsym(dlh, buf); |
113 | if (a == NULL) | |
114 | goto noexist; | |
115 | ||
116 | reg: | |
117 | a->next = action_list; | |
118 | action_list = a; | |
119 | return a; | |
120 | ||
121 | noexist: | |
122 | #ifdef CONFIG_GACT | |
123 | if (!looked4gact) { | |
124 | looked4gact = 1; | |
125 | strcpy(str,"gact"); | |
126 | goto restart_s; | |
127 | } | |
128 | #endif | |
129 | a = malloc(sizeof(*a)); | |
130 | if (a) { | |
131 | memset(a, 0, sizeof(*a)); | |
132 | strncpy(a->id, "noact", 15); | |
133 | a->parse_aopt = parse_noaopt; | |
134 | a->print_aopt = print_noaopt; | |
135 | goto reg; | |
136 | } | |
137 | return a; | |
138 | } | |
139 | ||
d1f28cf1 | 140 | static int |
ae665a52 | 141 | new_cmd(char **argv) |
68d5ba54 SH |
142 | { |
143 | if ((matches(*argv, "change") == 0) || | |
144 | (matches(*argv, "replace") == 0)|| | |
145 | (matches(*argv, "delete") == 0)|| | |
b159a7f1 | 146 | (matches(*argv, "get") == 0)|| |
68d5ba54 SH |
147 | (matches(*argv, "add") == 0)) |
148 | return 1; | |
149 | ||
150 | return 0; | |
151 | ||
152 | } | |
153 | ||
154 | int | |
155 | parse_action(int *argc_p, char ***argv_p, int tca_id, struct nlmsghdr *n) | |
156 | { | |
157 | int argc = *argc_p; | |
158 | char **argv = *argv_p; | |
159 | struct rtattr *tail, *tail2; | |
160 | char k[16]; | |
161 | int ok = 0; | |
162 | int eap = 0; /* expect action parameters */ | |
163 | ||
164 | int ret = 0; | |
165 | int prio = 0; | |
166 | ||
167 | if (argc <= 0) | |
168 | return -1; | |
169 | ||
4a86fe19 | 170 | tail = tail2 = NLMSG_TAIL(n); |
68d5ba54 SH |
171 | |
172 | addattr_l(n, MAX_MSG, tca_id, NULL, 0); | |
173 | ||
174 | while (argc > 0) { | |
175 | ||
176 | memset(k, 0, sizeof (k)); | |
177 | ||
178 | if (strcmp(*argv, "action") == 0 ) { | |
179 | argc--; | |
180 | argv++; | |
181 | eap = 1; | |
182 | #ifdef CONFIG_GACT | |
183 | if (!gact_ld) { | |
184 | get_action_kind("gact"); | |
185 | } | |
186 | #endif | |
187 | continue; | |
9282d08d JHS |
188 | } else if (strcmp(*argv, "flowid") == 0) { |
189 | break; | |
190 | } else if (strcmp(*argv, "classid") == 0) { | |
191 | break; | |
68d5ba54 SH |
192 | } else if (strcmp(*argv, "help") == 0) { |
193 | return -1; | |
194 | } else if (new_cmd(argv)) { | |
195 | goto done0; | |
196 | } else { | |
197 | struct action_util *a = NULL; | |
198 | strncpy(k, *argv, sizeof (k) - 1); | |
199 | eap = 0; | |
200 | if (argc > 0 ) { | |
201 | a = get_action_kind(k); | |
202 | } else { | |
203 | done0: | |
204 | if (ok) | |
205 | break; | |
206 | else | |
207 | goto done; | |
208 | } | |
209 | ||
ae665a52 | 210 | if (NULL == a) { |
68d5ba54 SH |
211 | goto bad_val; |
212 | } | |
213 | ||
4a86fe19 | 214 | tail = NLMSG_TAIL(n); |
68d5ba54 SH |
215 | addattr_l(n, MAX_MSG, ++prio, NULL, 0); |
216 | addattr_l(n, MAX_MSG, TCA_ACT_KIND, k, strlen(k) + 1); | |
217 | ||
218 | ret = a->parse_aopt(a,&argc, &argv, TCA_ACT_OPTIONS, n); | |
219 | ||
220 | if (ret < 0) { | |
221 | fprintf(stderr,"bad action parsing\n"); | |
222 | goto bad_val; | |
223 | } | |
4a86fe19 | 224 | tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; |
68d5ba54 SH |
225 | ok++; |
226 | } | |
227 | ||
228 | } | |
229 | ||
230 | if (eap > 0) { | |
231 | fprintf(stderr,"bad action empty %d\n",eap); | |
232 | goto bad_val; | |
233 | } | |
234 | ||
4a86fe19 | 235 | tail2->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail2; |
68d5ba54 SH |
236 | |
237 | done: | |
238 | *argc_p = argc; | |
239 | *argv_p = argv; | |
240 | return 0; | |
241 | bad_val: | |
ae665a52 | 242 | /* no need to undo things, returning from here should |
68d5ba54 SH |
243 | * cause enough pain */ |
244 | fprintf(stderr, "parse_action: bad value (%d:%s)!\n",argc,*argv); | |
245 | return -1; | |
246 | } | |
247 | ||
d1f28cf1 | 248 | static int |
68d5ba54 SH |
249 | tc_print_one_action(FILE * f, struct rtattr *arg) |
250 | { | |
251 | ||
954de6c7 | 252 | struct rtattr *tb[TCA_ACT_MAX + 1]; |
68d5ba54 SH |
253 | int err = 0; |
254 | struct action_util *a = NULL; | |
255 | ||
256 | if (arg == NULL) | |
257 | return -1; | |
258 | ||
954de6c7 JHS |
259 | parse_rtattr_nested(tb, TCA_ACT_MAX, arg); |
260 | ||
261 | if (tb[TCA_ACT_KIND] == NULL) { | |
68d5ba54 SH |
262 | fprintf(stderr, "NULL Action!\n"); |
263 | return -1; | |
264 | } | |
265 | ||
266 | ||
954de6c7 | 267 | a = get_action_kind(RTA_DATA(tb[TCA_ACT_KIND])); |
68d5ba54 SH |
268 | if (NULL == a) |
269 | return err; | |
270 | ||
954de6c7 | 271 | err = a->print_aopt(a, f, tb[TCA_ACT_OPTIONS]); |
68d5ba54 SH |
272 | |
273 | if (0 > err) | |
274 | return err; | |
275 | ||
954de6c7 | 276 | if (show_stats && tb[TCA_ACT_STATS]) { |
e5879dc6 | 277 | fprintf(f, "\tAction statistics:\n"); |
278 | print_tcstats2_attr(f, tb[TCA_ACT_STATS], "\t", NULL); | |
3d327bf5 | 279 | fprintf(f, "\n"); |
68d5ba54 SH |
280 | } |
281 | ||
282 | return 0; | |
283 | } | |
284 | ||
954de6c7 JHS |
285 | static int |
286 | tc_print_action_flush(FILE *f, const struct rtattr *arg) | |
287 | { | |
288 | ||
289 | struct rtattr *tb[TCA_MAX + 1]; | |
290 | int err = 0; | |
291 | struct action_util *a = NULL; | |
292 | __u32 *delete_count = 0; | |
293 | ||
294 | parse_rtattr_nested(tb, TCA_MAX, arg); | |
295 | ||
296 | if (tb[TCA_KIND] == NULL) { | |
297 | fprintf(stderr, "NULL Action!\n"); | |
298 | return -1; | |
299 | } | |
300 | ||
301 | a = get_action_kind(RTA_DATA(tb[TCA_KIND])); | |
302 | if (NULL == a) | |
303 | return err; | |
304 | ||
305 | delete_count = RTA_DATA(tb[TCA_FCNT]); | |
306 | fprintf(f," %s (%d entries)\n", a->id, *delete_count); | |
307 | tab_flush = 0; | |
308 | return 0; | |
309 | } | |
310 | ||
68d5ba54 | 311 | int |
954de6c7 | 312 | tc_print_action(FILE *f, const struct rtattr *arg) |
68d5ba54 SH |
313 | { |
314 | ||
315 | int i; | |
316 | struct rtattr *tb[TCA_ACT_MAX_PRIO + 1]; | |
317 | ||
318 | if (arg == NULL) | |
319 | return 0; | |
320 | ||
ac2fc2df | 321 | parse_rtattr_nested(tb, TCA_ACT_MAX_PRIO, arg); |
68d5ba54 | 322 | |
954de6c7 JHS |
323 | if (tab_flush && NULL != tb[0] && NULL == tb[1]) |
324 | return tc_print_action_flush(f, tb[0]); | |
68d5ba54 SH |
325 | |
326 | for (i = 0; i < TCA_ACT_MAX_PRIO; i++) { | |
327 | if (tb[i]) { | |
f24a7e72 | 328 | fprintf(f, "\n\taction order %d: ", i); |
68d5ba54 SH |
329 | if (0 > tc_print_one_action(f, tb[i])) { |
330 | fprintf(f, "Error printing action\n"); | |
331 | } | |
332 | } | |
333 | ||
334 | } | |
335 | ||
68d5ba54 SH |
336 | return 0; |
337 | } | |
338 | ||
5bec3484 | 339 | int print_action(const struct sockaddr_nl *who, |
50772dc5 | 340 | struct nlmsghdr *n, |
3d327bf5 | 341 | void *arg) |
68d5ba54 SH |
342 | { |
343 | FILE *fp = (FILE*)arg; | |
344 | struct tcamsg *t = NLMSG_DATA(n); | |
345 | int len = n->nlmsg_len; | |
346 | struct rtattr * tb[TCAA_MAX+1]; | |
347 | ||
348 | len -= NLMSG_LENGTH(sizeof(*t)); | |
349 | ||
350 | if (len < 0) { | |
351 | fprintf(stderr, "Wrong len %d\n", len); | |
352 | return -1; | |
353 | } | |
354 | ||
68d5ba54 SH |
355 | parse_rtattr(tb, TCAA_MAX, TA_RTA(t), len); |
356 | ||
357 | if (NULL == tb[TCA_ACT_TAB]) { | |
358 | if (n->nlmsg_type != RTM_GETACTION) | |
5bec3484 | 359 | fprintf(stderr, "print_action: NULL kind\n"); |
68d5ba54 | 360 | return -1; |
ae665a52 | 361 | } |
68d5ba54 SH |
362 | |
363 | if (n->nlmsg_type == RTM_DELACTION) { | |
364 | if (n->nlmsg_flags & NLM_F_ROOT) { | |
ae665a52 | 365 | fprintf(fp, "Flushed table "); |
68d5ba54 SH |
366 | tab_flush = 1; |
367 | } else { | |
368 | fprintf(fp, "deleted action "); | |
369 | } | |
370 | } | |
371 | ||
372 | if (n->nlmsg_type == RTM_NEWACTION) | |
373 | fprintf(fp, "Added action "); | |
374 | tc_print_action(fp, tb[TCA_ACT_TAB]); | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
d1f28cf1 | 379 | static int tc_action_gd(int cmd, unsigned flags, int *argc_p, char ***argv_p) |
68d5ba54 SH |
380 | { |
381 | char k[16]; | |
382 | struct action_util *a = NULL; | |
383 | int argc = *argc_p; | |
384 | char **argv = *argv_p; | |
385 | int prio = 0; | |
386 | int ret = 0; | |
387 | __u32 i; | |
68d5ba54 SH |
388 | struct sockaddr_nl nladdr; |
389 | struct rtattr *tail; | |
390 | struct rtattr *tail2; | |
391 | struct nlmsghdr *ans = NULL; | |
392 | ||
393 | struct { | |
394 | struct nlmsghdr n; | |
395 | struct tcamsg t; | |
396 | char buf[MAX_MSG]; | |
397 | } req; | |
398 | ||
399 | req.t.tca_family = AF_UNSPEC; | |
400 | ||
401 | memset(&req, 0, sizeof(req)); | |
402 | ||
403 | memset(&nladdr, 0, sizeof(nladdr)); | |
404 | nladdr.nl_family = AF_NETLINK; | |
405 | ||
406 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcamsg)); | |
407 | req.n.nlmsg_flags = NLM_F_REQUEST|flags; | |
408 | req.n.nlmsg_type = cmd; | |
409 | argc -=1; | |
410 | argv +=1; | |
411 | ||
412 | ||
4a86fe19 | 413 | tail = NLMSG_TAIL(&req.n); |
68d5ba54 SH |
414 | addattr_l(&req.n, MAX_MSG, TCA_ACT_TAB, NULL, 0); |
415 | ||
416 | while (argc > 0) { | |
417 | if (strcmp(*argv, "action") == 0 ) { | |
418 | argc--; | |
419 | argv++; | |
420 | continue; | |
421 | } else if (strcmp(*argv, "help") == 0) { | |
422 | return -1; | |
423 | } | |
424 | ||
425 | strncpy(k, *argv, sizeof (k) - 1); | |
426 | a = get_action_kind(k); | |
ae665a52 | 427 | if (NULL == a) { |
68d5ba54 SH |
428 | fprintf(stderr, "Error: non existent action: %s\n",k); |
429 | ret = -1; | |
430 | goto bad_val; | |
431 | } | |
432 | if (strcmp(a->id, k) != 0) { | |
433 | fprintf(stderr, "Error: non existent action: %s\n",k); | |
434 | ret = -1; | |
435 | goto bad_val; | |
436 | } | |
437 | ||
438 | argc -=1; | |
439 | argv +=1; | |
440 | if (argc <= 0) { | |
441 | fprintf(stderr, "Error: no index specified action: %s\n",k); | |
442 | ret = -1; | |
443 | goto bad_val; | |
444 | } | |
445 | ||
446 | if (matches(*argv, "index") == 0) { | |
447 | NEXT_ARG(); | |
448 | if (get_u32(&i, *argv, 10)) { | |
449 | fprintf(stderr, "Illegal \"index\"\n"); | |
450 | ret = -1; | |
451 | goto bad_val; | |
452 | } | |
453 | argc -=1; | |
454 | argv +=1; | |
455 | } else { | |
456 | fprintf(stderr, "Error: no index specified action: %s\n",k); | |
457 | ret = -1; | |
458 | goto bad_val; | |
459 | } | |
460 | ||
4a86fe19 | 461 | tail2 = NLMSG_TAIL(&req.n); |
462 | addattr_l(&req.n, MAX_MSG, ++prio, NULL, 0); | |
463 | addattr_l(&req.n, MAX_MSG, TCA_ACT_KIND, k, strlen(k) + 1); | |
464 | addattr32(&req.n, MAX_MSG, TCA_ACT_INDEX, i); | |
465 | tail2->rta_len = (void *) NLMSG_TAIL(&req.n) - (void *) tail2; | |
68d5ba54 SH |
466 | |
467 | } | |
468 | ||
4a86fe19 | 469 | tail->rta_len = (void *) NLMSG_TAIL(&req.n) - (void *) tail; |
68d5ba54 | 470 | |
68d5ba54 SH |
471 | req.n.nlmsg_seq = rth.dump = ++rth.seq; |
472 | if (cmd == RTM_GETACTION) | |
473 | ans = &req.n; | |
c1027a75 | 474 | |
cd70f3f5 | 475 | if (rtnl_talk(&rth, &req.n, 0, 0, ans) < 0) { |
68d5ba54 | 476 | fprintf(stderr, "We have an error talking to the kernel\n"); |
52f337c1 | 477 | return 1; |
68d5ba54 SH |
478 | } |
479 | ||
5bec3484 | 480 | if (ans && print_action(NULL, &req.n, (void*)stdout) < 0) { |
68d5ba54 | 481 | fprintf(stderr, "Dump terminated\n"); |
52f337c1 | 482 | return 1; |
68d5ba54 SH |
483 | } |
484 | ||
485 | *argc_p = argc; | |
486 | *argv_p = argv; | |
68d5ba54 SH |
487 | bad_val: |
488 | return ret; | |
489 | } | |
490 | ||
d1f28cf1 | 491 | static int tc_action_modify(int cmd, unsigned flags, int *argc_p, char ***argv_p) |
68d5ba54 SH |
492 | { |
493 | int argc = *argc_p; | |
494 | char **argv = *argv_p; | |
495 | int ret = 0; | |
496 | ||
68d5ba54 SH |
497 | struct rtattr *tail; |
498 | struct { | |
499 | struct nlmsghdr n; | |
500 | struct tcamsg t; | |
501 | char buf[MAX_MSG]; | |
502 | } req; | |
503 | ||
504 | req.t.tca_family = AF_UNSPEC; | |
505 | ||
506 | memset(&req, 0, sizeof(req)); | |
507 | ||
508 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcamsg)); | |
509 | req.n.nlmsg_flags = NLM_F_REQUEST|flags; | |
510 | req.n.nlmsg_type = cmd; | |
4a86fe19 | 511 | tail = NLMSG_TAIL(&req.n); |
68d5ba54 SH |
512 | argc -=1; |
513 | argv +=1; | |
514 | if (parse_action(&argc, &argv, TCA_ACT_TAB, &req.n)) { | |
515 | fprintf(stderr, "Illegal \"action\"\n"); | |
516 | return -1; | |
517 | } | |
4a86fe19 | 518 | tail->rta_len = (void *) NLMSG_TAIL(&req.n) - (void *) tail; |
68d5ba54 | 519 | |
cd70f3f5 | 520 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0) { |
68d5ba54 SH |
521 | fprintf(stderr, "We have an error talking to the kernel\n"); |
522 | ret = -1; | |
523 | } | |
524 | ||
525 | *argc_p = argc; | |
526 | *argv_p = argv; | |
c1027a75 | 527 | |
68d5ba54 SH |
528 | return ret; |
529 | } | |
530 | ||
d1f28cf1 | 531 | static int tc_act_list_or_flush(int argc, char **argv, int event) |
68d5ba54 SH |
532 | { |
533 | int ret = 0, prio = 0, msg_size = 0; | |
534 | char k[16]; | |
68d5ba54 SH |
535 | struct rtattr *tail,*tail2; |
536 | struct action_util *a = NULL; | |
537 | struct { | |
538 | struct nlmsghdr n; | |
539 | struct tcamsg t; | |
540 | char buf[MAX_MSG]; | |
541 | } req; | |
542 | ||
543 | req.t.tca_family = AF_UNSPEC; | |
544 | ||
545 | memset(&req, 0, sizeof(req)); | |
546 | ||
547 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcamsg)); | |
548 | ||
4a86fe19 | 549 | tail = NLMSG_TAIL(&req.n); |
68d5ba54 | 550 | addattr_l(&req.n, MAX_MSG, TCA_ACT_TAB, NULL, 0); |
4a86fe19 | 551 | tail2 = NLMSG_TAIL(&req.n); |
68d5ba54 SH |
552 | |
553 | strncpy(k, *argv, sizeof (k) - 1); | |
554 | #ifdef CONFIG_GACT | |
555 | if (!gact_ld) { | |
556 | get_action_kind("gact"); | |
557 | } | |
558 | #endif | |
559 | a = get_action_kind(k); | |
ae665a52 | 560 | if (NULL == a) { |
68d5ba54 SH |
561 | fprintf(stderr,"bad action %s\n",k); |
562 | goto bad_val; | |
563 | } | |
564 | if (strcmp(a->id, k) != 0) { | |
565 | fprintf(stderr,"bad action %s\n",k); | |
566 | goto bad_val; | |
567 | } | |
568 | strncpy(k, *argv, sizeof (k) - 1); | |
569 | ||
570 | addattr_l(&req.n, MAX_MSG, ++prio, NULL, 0); | |
571 | addattr_l(&req.n, MAX_MSG, TCA_ACT_KIND, k, strlen(k) + 1); | |
4a86fe19 | 572 | tail2->rta_len = (void *) NLMSG_TAIL(&req.n) - (void *) tail2; |
573 | tail->rta_len = (void *) NLMSG_TAIL(&req.n) - (void *) tail; | |
68d5ba54 | 574 | |
68d5ba54 SH |
575 | msg_size = NLMSG_ALIGN(req.n.nlmsg_len) - NLMSG_ALIGN(sizeof(struct nlmsghdr)); |
576 | ||
ae665a52 | 577 | if (event == RTM_GETACTION) { |
68d5ba54 SH |
578 | if (rtnl_dump_request(&rth, event, (void *)&req.t, msg_size) < 0) { |
579 | perror("Cannot send dump request"); | |
52f337c1 | 580 | return 1; |
68d5ba54 | 581 | } |
cd70f3f5 | 582 | ret = rtnl_dump_filter(&rth, print_action, stdout); |
68d5ba54 SH |
583 | } |
584 | ||
ae665a52 | 585 | if (event == RTM_DELACTION) { |
68d5ba54 SH |
586 | req.n.nlmsg_len = NLMSG_ALIGN(req.n.nlmsg_len); |
587 | req.n.nlmsg_type = RTM_DELACTION; | |
588 | req.n.nlmsg_flags |= NLM_F_ROOT; | |
589 | req.n.nlmsg_flags |= NLM_F_REQUEST; | |
cd70f3f5 | 590 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0) { |
68d5ba54 | 591 | fprintf(stderr, "We have an error flushing\n"); |
52f337c1 | 592 | return 1; |
68d5ba54 SH |
593 | } |
594 | ||
595 | } | |
596 | ||
597 | bad_val: | |
598 | ||
68d5ba54 SH |
599 | return ret; |
600 | } | |
601 | ||
602 | int do_action(int argc, char **argv) | |
603 | { | |
604 | ||
605 | int ret = 0; | |
606 | ||
607 | while (argc > 0) { | |
608 | ||
609 | if (matches(*argv, "add") == 0) { | |
610 | ret = tc_action_modify(RTM_NEWACTION, NLM_F_EXCL|NLM_F_CREATE, &argc, &argv); | |
611 | } else if (matches(*argv, "change") == 0 || | |
612 | matches(*argv, "replace") == 0) { | |
613 | ret = tc_action_modify(RTM_NEWACTION, NLM_F_CREATE|NLM_F_REPLACE, &argc, &argv); | |
614 | } else if (matches(*argv, "delete") == 0) { | |
615 | argc -=1; | |
616 | argv +=1; | |
617 | ret = tc_action_gd(RTM_DELACTION, 0, &argc, &argv); | |
618 | } else if (matches(*argv, "get") == 0) { | |
619 | argc -=1; | |
620 | argv +=1; | |
621 | ret = tc_action_gd(RTM_GETACTION, 0, &argc, &argv); | |
622 | } else if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0 | |
623 | || matches(*argv, "lst") == 0) { | |
624 | if (argc <= 2) { | |
625 | act_usage(); | |
626 | return -1; | |
627 | } | |
628 | return tc_act_list_or_flush(argc-2, argv+2, RTM_GETACTION); | |
629 | } else if (matches(*argv, "flush") == 0) { | |
630 | if (argc <= 2) { | |
631 | act_usage(); | |
632 | return -1; | |
633 | } | |
634 | return tc_act_list_or_flush(argc-2, argv+2, RTM_DELACTION); | |
635 | } else if (matches(*argv, "help") == 0) { | |
636 | act_usage(); | |
637 | return -1; | |
638 | } else { | |
639 | ||
640 | ret = -1; | |
641 | } | |
642 | ||
643 | if (ret < 0) { | |
f1e4f042 | 644 | fprintf(stderr, "Command \"%s\" is unknown, try \"tc actions help\".\n", *argv); |
68d5ba54 SH |
645 | return -1; |
646 | } | |
647 | } | |
648 | ||
649 | return 0; | |
650 | } | |
651 |