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aba5acdf SH |
1 | /* |
2 | * tc_filter.c "tc filter". | |
3 | * | |
4 | * This program is free software; you can redistribute 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 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <unistd.h> | |
aba5acdf | 16 | #include <fcntl.h> |
aba5acdf SH |
17 | #include <sys/socket.h> |
18 | #include <netinet/in.h> | |
19 | #include <arpa/inet.h> | |
20 | #include <string.h> | |
21 | #include <linux/if_ether.h> | |
22 | ||
23 | #include "rt_names.h" | |
24 | #include "utils.h" | |
25 | #include "tc_util.h" | |
26 | #include "tc_common.h" | |
27 | ||
aba5acdf SH |
28 | static void usage(void) |
29 | { | |
ec2e005f SH |
30 | fprintf(stderr, |
31 | "Usage: tc filter [ add | del | change | replace | show ] dev STRING\n" | |
32 | "Usage: tc filter get dev STRING parent CLASSID protocol PROTO handle FILTERID pref PRIO FILTER_TYPE\n" | |
732f0346 | 33 | " [ pref PRIO ] protocol PROTO [ chain CHAIN_INDEX ]\n" |
ec2e005f SH |
34 | " [ estimator INTERVAL TIME_CONSTANT ]\n" |
35 | " [ root | ingress | egress | parent CLASSID ]\n" | |
36 | " [ handle FILTERID ] [ [ FILTER_TYPE ] [ help | OPTIONS ] ]\n" | |
37 | "\n" | |
38 | " tc filter show [ dev STRING ] [ root | ingress | egress | parent CLASSID ]\n" | |
39 | "Where:\n" | |
40 | "FILTER_TYPE := { rsvp | u32 | bpf | fw | route | etc. }\n" | |
41 | "FILTERID := ... format depends on classifier, see there\n" | |
42 | "OPTIONS := ... try tc filter add <desired FILTER_KIND> help\n"); | |
aba5acdf SH |
43 | } |
44 | ||
32a121cb | 45 | static int tc_filter_modify(int cmd, unsigned int flags, int argc, char **argv) |
aba5acdf | 46 | { |
aba5acdf | 47 | struct { |
32a121cb SH |
48 | struct nlmsghdr n; |
49 | struct tcmsg t; | |
50 | char buf[MAX_MSG]; | |
d17b136f PS |
51 | } req = { |
52 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)), | |
53 | .n.nlmsg_flags = NLM_F_REQUEST | flags, | |
54 | .n.nlmsg_type = cmd, | |
55 | .t.tcm_family = AF_UNSPEC, | |
56 | }; | |
aba5acdf SH |
57 | struct filter_util *q = NULL; |
58 | __u32 prio = 0; | |
ae761068 | 59 | __u32 protocol = 0; |
083a5f00 | 60 | int protocol_set = 0; |
732f0346 JP |
61 | __u32 chain_index; |
62 | int chain_index_set = 0; | |
aba5acdf | 63 | char *fhandle = NULL; |
b317557f SH |
64 | char d[IFNAMSIZ] = {}; |
65 | char k[FILTER_NAMESZ] = {}; | |
d17b136f | 66 | struct tc_estimator est = {}; |
aba5acdf | 67 | |
ae761068 | 68 | if (cmd == RTM_NEWTFILTER && flags & NLM_F_CREATE) |
05fb9184 | 69 | protocol = htons(ETH_P_ALL); |
ae761068 | 70 | |
aba5acdf SH |
71 | while (argc > 0) { |
72 | if (strcmp(*argv, "dev") == 0) { | |
73 | NEXT_ARG(); | |
74 | if (d[0]) | |
75 | duparg("dev", *argv); | |
76 | strncpy(d, *argv, sizeof(d)-1); | |
77 | } else if (strcmp(*argv, "root") == 0) { | |
78 | if (req.t.tcm_parent) { | |
ec2e005f SH |
79 | fprintf(stderr, |
80 | "Error: \"root\" is duplicate parent ID\n"); | |
024481bb | 81 | return -1; |
aba5acdf SH |
82 | } |
83 | req.t.tcm_parent = TC_H_ROOT; | |
8f9afdd5 DB |
84 | } else if (strcmp(*argv, "ingress") == 0) { |
85 | if (req.t.tcm_parent) { | |
ec2e005f SH |
86 | fprintf(stderr, |
87 | "Error: \"ingress\" is duplicate parent ID\n"); | |
8f9afdd5 DB |
88 | return -1; |
89 | } | |
90 | req.t.tcm_parent = TC_H_MAKE(TC_H_CLSACT, | |
91 | TC_H_MIN_INGRESS); | |
92 | } else if (strcmp(*argv, "egress") == 0) { | |
93 | if (req.t.tcm_parent) { | |
ec2e005f SH |
94 | fprintf(stderr, |
95 | "Error: \"egress\" is duplicate parent ID\n"); | |
8f9afdd5 DB |
96 | return -1; |
97 | } | |
98 | req.t.tcm_parent = TC_H_MAKE(TC_H_CLSACT, | |
99 | TC_H_MIN_EGRESS); | |
aba5acdf SH |
100 | } else if (strcmp(*argv, "parent") == 0) { |
101 | __u32 handle; | |
32a121cb | 102 | |
aba5acdf SH |
103 | NEXT_ARG(); |
104 | if (req.t.tcm_parent) | |
105 | duparg("parent", *argv); | |
106 | if (get_tc_classid(&handle, *argv)) | |
f1675d61 | 107 | invarg("Invalid parent ID", *argv); |
aba5acdf SH |
108 | req.t.tcm_parent = handle; |
109 | } else if (strcmp(*argv, "handle") == 0) { | |
110 | NEXT_ARG(); | |
111 | if (fhandle) | |
112 | duparg("handle", *argv); | |
113 | fhandle = *argv; | |
114 | } else if (matches(*argv, "preference") == 0 || | |
115 | matches(*argv, "priority") == 0) { | |
116 | NEXT_ARG(); | |
117 | if (prio) | |
118 | duparg("priority", *argv); | |
424adc19 | 119 | if (get_u32(&prio, *argv, 0) || prio > 0xFFFF) |
f1675d61 | 120 | invarg("invalid priority value", *argv); |
aba5acdf SH |
121 | } else if (matches(*argv, "protocol") == 0) { |
122 | __u16 id; | |
32a121cb | 123 | |
aba5acdf | 124 | NEXT_ARG(); |
083a5f00 | 125 | if (protocol_set) |
aba5acdf SH |
126 | duparg("protocol", *argv); |
127 | if (ll_proto_a2n(&id, *argv)) | |
f1675d61 | 128 | invarg("invalid protocol", *argv); |
aba5acdf | 129 | protocol = id; |
083a5f00 | 130 | protocol_set = 1; |
732f0346 JP |
131 | } else if (matches(*argv, "chain") == 0) { |
132 | NEXT_ARG(); | |
133 | if (chain_index_set) | |
134 | duparg("chain", *argv); | |
135 | if (get_u32(&chain_index, *argv, 0)) | |
136 | invarg("invalid chain index value", *argv); | |
137 | chain_index_set = 1; | |
aba5acdf SH |
138 | } else if (matches(*argv, "estimator") == 0) { |
139 | if (parse_estimator(&argc, &argv, &est) < 0) | |
140 | return -1; | |
141 | } else if (matches(*argv, "help") == 0) { | |
142 | usage(); | |
3a99df70 | 143 | return 0; |
aba5acdf SH |
144 | } else { |
145 | strncpy(k, *argv, sizeof(k)-1); | |
146 | ||
147 | q = get_filter_kind(k); | |
148 | argc--; argv++; | |
149 | break; | |
150 | } | |
151 | ||
152 | argc--; argv++; | |
153 | } | |
154 | ||
155 | req.t.tcm_info = TC_H_MAKE(prio<<16, protocol); | |
156 | ||
732f0346 JP |
157 | if (chain_index_set) |
158 | addattr32(&req.n, sizeof(req), TCA_CHAIN, chain_index); | |
159 | ||
aba5acdf SH |
160 | if (k[0]) |
161 | addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1); | |
162 | ||
01ea76b1 JK |
163 | if (d[0]) { |
164 | ll_init_map(&rth); | |
165 | ||
166 | req.t.tcm_ifindex = ll_name_to_index(d); | |
167 | if (req.t.tcm_ifindex == 0) { | |
168 | fprintf(stderr, "Cannot find device \"%s\"\n", d); | |
169 | return 1; | |
170 | } | |
171 | } | |
172 | ||
aba5acdf SH |
173 | if (q) { |
174 | if (q->parse_fopt(q, fhandle, argc, argv, &req.n)) | |
024481bb | 175 | return 1; |
aba5acdf SH |
176 | } else { |
177 | if (fhandle) { | |
ec2e005f SH |
178 | fprintf(stderr, |
179 | "Must specify filter type when using \"handle\"\n"); | |
024481bb | 180 | return -1; |
aba5acdf SH |
181 | } |
182 | if (argc) { | |
183 | if (matches(*argv, "help") == 0) | |
184 | usage(); | |
ec2e005f SH |
185 | fprintf(stderr, |
186 | "Garbage instead of arguments \"%s ...\". Try \"tc filter help\".\n", | |
187 | *argv); | |
024481bb | 188 | return -1; |
aba5acdf SH |
189 | } |
190 | } | |
732f0346 | 191 | |
aba5acdf SH |
192 | if (est.ewma_log) |
193 | addattr_l(&req.n, sizeof(req), TCA_RATE, &est, sizeof(est)); | |
194 | ||
86bf43c7 | 195 | if (rtnl_talk(&rth, &req.n, NULL) < 0) { |
2373fde9 | 196 | fprintf(stderr, "We have an error talking to the kernel\n"); |
024481bb | 197 | return 2; |
2373fde9 | 198 | } |
aba5acdf | 199 | |
aba5acdf SH |
200 | return 0; |
201 | } | |
202 | ||
203 | static __u32 filter_parent; | |
204 | static int filter_ifindex; | |
205 | static __u32 filter_prio; | |
206 | static __u32 filter_protocol; | |
732f0346 JP |
207 | static __u32 filter_chain_index; |
208 | static int filter_chain_index_set; | |
32a121cb | 209 | __u16 f_proto; |
aba5acdf | 210 | |
120f556d | 211 | int print_filter(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg) |
aba5acdf | 212 | { |
32a121cb | 213 | FILE *fp = (FILE *)arg; |
aba5acdf SH |
214 | struct tcmsg *t = NLMSG_DATA(n); |
215 | int len = n->nlmsg_len; | |
32a121cb | 216 | struct rtattr *tb[TCA_MAX+1]; |
aba5acdf SH |
217 | struct filter_util *q; |
218 | char abuf[256]; | |
219 | ||
120f556d JHS |
220 | if (n->nlmsg_type != RTM_NEWTFILTER && |
221 | n->nlmsg_type != RTM_GETTFILTER && | |
222 | n->nlmsg_type != RTM_DELTFILTER) { | |
223 | fprintf(stderr, "Not a filter(cmd %d)\n", n->nlmsg_type); | |
aba5acdf SH |
224 | return 0; |
225 | } | |
226 | len -= NLMSG_LENGTH(sizeof(*t)); | |
227 | if (len < 0) { | |
228 | fprintf(stderr, "Wrong len %d\n", len); | |
229 | return -1; | |
230 | } | |
231 | ||
aba5acdf SH |
232 | parse_rtattr(tb, TCA_MAX, TCA_RTA(t), len); |
233 | ||
234 | if (tb[TCA_KIND] == NULL) { | |
2373fde9 | 235 | fprintf(stderr, "print_filter: NULL kind\n"); |
aba5acdf SH |
236 | return -1; |
237 | } | |
238 | ||
249284ff JP |
239 | open_json_object(NULL); |
240 | ||
aba5acdf | 241 | if (n->nlmsg_type == RTM_DELTFILTER) |
249284ff | 242 | print_bool(PRINT_ANY, "deleted", "deleted ", true); |
aba5acdf | 243 | |
98df0c81 RM |
244 | if (n->nlmsg_type == RTM_NEWTFILTER && |
245 | (n->nlmsg_flags & NLM_F_CREATE) && | |
246 | !(n->nlmsg_flags & NLM_F_EXCL)) | |
249284ff | 247 | print_bool(PRINT_ANY, "replaced", "replaced ", true); |
98df0c81 RM |
248 | |
249 | if (n->nlmsg_type == RTM_NEWTFILTER && | |
250 | (n->nlmsg_flags & NLM_F_CREATE) && | |
251 | (n->nlmsg_flags & NLM_F_EXCL)) | |
249284ff | 252 | print_bool(PRINT_ANY, "added", "added ", true); |
98df0c81 | 253 | |
249284ff | 254 | print_string(PRINT_FP, NULL, "filter ", NULL); |
aba5acdf | 255 | if (!filter_ifindex || filter_ifindex != t->tcm_ifindex) |
249284ff JP |
256 | print_string(PRINT_ANY, "dev", "dev %s ", |
257 | ll_index_to_name(t->tcm_ifindex)); | |
aba5acdf SH |
258 | |
259 | if (!filter_parent || filter_parent != t->tcm_parent) { | |
260 | if (t->tcm_parent == TC_H_ROOT) | |
249284ff | 261 | print_bool(PRINT_ANY, "root", "root ", true); |
8f9afdd5 | 262 | else if (t->tcm_parent == TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_INGRESS)) |
249284ff | 263 | print_bool(PRINT_ANY, "ingress", "ingress ", true); |
8f9afdd5 | 264 | else if (t->tcm_parent == TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_EGRESS)) |
249284ff | 265 | print_bool(PRINT_ANY, "egress", "egress ", true); |
aba5acdf SH |
266 | else { |
267 | print_tc_classid(abuf, sizeof(abuf), t->tcm_parent); | |
249284ff | 268 | print_string(PRINT_ANY, "parent", "parent %s ", abuf); |
aba5acdf SH |
269 | } |
270 | } | |
8f9afdd5 | 271 | |
aba5acdf | 272 | if (t->tcm_info) { |
eefcbc72 | 273 | f_proto = TC_H_MIN(t->tcm_info); |
aba5acdf | 274 | __u32 prio = TC_H_MAJ(t->tcm_info)>>16; |
32a121cb | 275 | |
eefcbc72 | 276 | if (!filter_protocol || filter_protocol != f_proto) { |
277 | if (f_proto) { | |
aba5acdf | 278 | SPRINT_BUF(b1); |
249284ff JP |
279 | print_string(PRINT_JSON, "protocol", |
280 | "protocol %s ", | |
281 | ll_proto_n2a(f_proto, b1, sizeof(b1))); | |
aba5acdf SH |
282 | } |
283 | } | |
284 | if (!filter_prio || filter_prio != prio) { | |
285 | if (prio) | |
249284ff | 286 | print_uint(PRINT_ANY, "pref", "pref %u ", prio); |
aba5acdf SH |
287 | } |
288 | } | |
249284ff | 289 | print_string(PRINT_ANY, "kind", "%s ", rta_getattr_str(tb[TCA_KIND])); |
732f0346 JP |
290 | |
291 | if (tb[TCA_CHAIN]) { | |
292 | __u32 chain_index = rta_getattr_u32(tb[TCA_CHAIN]); | |
293 | ||
294 | if (!filter_chain_index_set || | |
295 | filter_chain_index != chain_index) | |
249284ff JP |
296 | print_uint(PRINT_ANY, "chain", "chain %u ", |
297 | chain_index); | |
732f0346 JP |
298 | } |
299 | ||
aba5acdf SH |
300 | q = get_filter_kind(RTA_DATA(tb[TCA_KIND])); |
301 | if (tb[TCA_OPTIONS]) { | |
249284ff | 302 | open_json_object("options"); |
aba5acdf SH |
303 | if (q) |
304 | q->print_fopt(q, fp, tb[TCA_OPTIONS], t->tcm_handle); | |
305 | else | |
249284ff JP |
306 | print_string(PRINT_FP, NULL, |
307 | "[cannot parse parameters]", NULL); | |
308 | close_json_object(); | |
aba5acdf | 309 | } |
249284ff | 310 | print_string(PRINT_FP, NULL, "\n", NULL); |
aba5acdf | 311 | |
e5879dc6 | 312 | if (show_stats && (tb[TCA_STATS] || tb[TCA_STATS2])) { |
313 | print_tcstats_attr(fp, tb, " ", NULL); | |
249284ff | 314 | print_string(PRINT_FP, NULL, "\n", NULL); |
aba5acdf | 315 | } |
de481780 | 316 | |
249284ff | 317 | close_json_object(); |
aba5acdf SH |
318 | fflush(fp); |
319 | return 0; | |
320 | } | |
321 | ||
120f556d JHS |
322 | static int tc_filter_get(int cmd, unsigned int flags, int argc, char **argv) |
323 | { | |
324 | struct { | |
325 | struct nlmsghdr n; | |
326 | struct tcmsg t; | |
327 | char buf[MAX_MSG]; | |
328 | } req = { | |
329 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)), | |
330 | /* NLM_F_ECHO is for backward compatibility. old kernels never | |
331 | * respond without it and newer kernels will ignore it. | |
332 | * In old kernels there is a side effect: | |
333 | * In addition to a response to the GET you will receive an | |
334 | * event (if you do tc mon). | |
335 | */ | |
336 | .n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ECHO | flags, | |
337 | .n.nlmsg_type = cmd, | |
338 | .t.tcm_parent = TC_H_UNSPEC, | |
339 | .t.tcm_family = AF_UNSPEC, | |
340 | }; | |
86bf43c7 | 341 | struct nlmsghdr *answer; |
120f556d JHS |
342 | struct filter_util *q = NULL; |
343 | __u32 prio = 0; | |
344 | __u32 protocol = 0; | |
345 | int protocol_set = 0; | |
732f0346 JP |
346 | __u32 chain_index; |
347 | int chain_index_set = 0; | |
120f556d JHS |
348 | __u32 parent_handle = 0; |
349 | char *fhandle = NULL; | |
b317557f SH |
350 | char d[IFNAMSIZ] = {}; |
351 | char k[FILTER_NAMESZ] = {}; | |
120f556d JHS |
352 | |
353 | while (argc > 0) { | |
354 | if (strcmp(*argv, "dev") == 0) { | |
355 | NEXT_ARG(); | |
356 | if (d[0]) | |
357 | duparg("dev", *argv); | |
358 | strncpy(d, *argv, sizeof(d)-1); | |
359 | } else if (strcmp(*argv, "root") == 0) { | |
360 | if (req.t.tcm_parent) { | |
ec2e005f SH |
361 | fprintf(stderr, |
362 | "Error: \"root\" is duplicate parent ID\n"); | |
120f556d JHS |
363 | return -1; |
364 | } | |
365 | req.t.tcm_parent = TC_H_ROOT; | |
366 | } else if (strcmp(*argv, "ingress") == 0) { | |
367 | if (req.t.tcm_parent) { | |
ec2e005f SH |
368 | fprintf(stderr, |
369 | "Error: \"ingress\" is duplicate parent ID\n"); | |
120f556d JHS |
370 | return -1; |
371 | } | |
372 | req.t.tcm_parent = TC_H_MAKE(TC_H_CLSACT, | |
373 | TC_H_MIN_INGRESS); | |
374 | } else if (strcmp(*argv, "egress") == 0) { | |
375 | if (req.t.tcm_parent) { | |
ec2e005f SH |
376 | fprintf(stderr, |
377 | "Error: \"egress\" is duplicate parent ID\n"); | |
120f556d JHS |
378 | return -1; |
379 | } | |
380 | req.t.tcm_parent = TC_H_MAKE(TC_H_CLSACT, | |
381 | TC_H_MIN_EGRESS); | |
382 | } else if (strcmp(*argv, "parent") == 0) { | |
383 | ||
384 | NEXT_ARG(); | |
385 | if (req.t.tcm_parent) | |
386 | duparg("parent", *argv); | |
387 | if (get_tc_classid(&parent_handle, *argv)) | |
388 | invarg("Invalid parent ID", *argv); | |
389 | req.t.tcm_parent = parent_handle; | |
390 | } else if (strcmp(*argv, "handle") == 0) { | |
391 | NEXT_ARG(); | |
392 | if (fhandle) | |
393 | duparg("handle", *argv); | |
394 | fhandle = *argv; | |
395 | } else if (matches(*argv, "preference") == 0 || | |
396 | matches(*argv, "priority") == 0) { | |
397 | NEXT_ARG(); | |
398 | if (prio) | |
399 | duparg("priority", *argv); | |
400 | if (get_u32(&prio, *argv, 0) || prio > 0xFFFF) | |
401 | invarg("invalid priority value", *argv); | |
402 | } else if (matches(*argv, "protocol") == 0) { | |
403 | __u16 id; | |
404 | ||
405 | NEXT_ARG(); | |
406 | if (protocol_set) | |
407 | duparg("protocol", *argv); | |
408 | if (ll_proto_a2n(&id, *argv)) | |
409 | invarg("invalid protocol", *argv); | |
410 | protocol = id; | |
411 | protocol_set = 1; | |
732f0346 JP |
412 | } else if (matches(*argv, "chain") == 0) { |
413 | NEXT_ARG(); | |
414 | if (chain_index_set) | |
415 | duparg("chain", *argv); | |
416 | if (get_u32(&chain_index, *argv, 0)) | |
417 | invarg("invalid chain index value", *argv); | |
418 | chain_index_set = 1; | |
120f556d JHS |
419 | } else if (matches(*argv, "help") == 0) { |
420 | usage(); | |
421 | return 0; | |
422 | } else { | |
75716932 PS |
423 | if (!**argv) |
424 | invarg("invalid filter name", *argv); | |
425 | ||
120f556d JHS |
426 | strncpy(k, *argv, sizeof(k)-1); |
427 | ||
428 | q = get_filter_kind(k); | |
429 | argc--; argv++; | |
430 | break; | |
431 | } | |
432 | ||
433 | argc--; argv++; | |
434 | } | |
435 | ||
436 | if (!protocol_set) { | |
437 | fprintf(stderr, "Must specify filter protocol\n"); | |
438 | return -1; | |
439 | } | |
440 | ||
441 | if (!prio) { | |
442 | fprintf(stderr, "Must specify filter priority\n"); | |
443 | return -1; | |
444 | } | |
445 | ||
446 | req.t.tcm_info = TC_H_MAKE(prio<<16, protocol); | |
447 | ||
732f0346 JP |
448 | if (chain_index_set) |
449 | addattr32(&req.n, sizeof(req), TCA_CHAIN, chain_index); | |
450 | ||
120f556d JHS |
451 | if (req.t.tcm_parent == TC_H_UNSPEC) { |
452 | fprintf(stderr, "Must specify filter parent\n"); | |
453 | return -1; | |
454 | } | |
455 | ||
456 | if (k[0]) | |
457 | addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1); | |
458 | else { | |
459 | fprintf(stderr, "Must specify filter type\n"); | |
460 | return -1; | |
461 | } | |
462 | ||
01ea76b1 JK |
463 | if (d[0]) { |
464 | ll_init_map(&rth); | |
465 | ||
466 | req.t.tcm_ifindex = ll_name_to_index(d); | |
467 | if (req.t.tcm_ifindex == 0) { | |
468 | fprintf(stderr, "Cannot find device \"%s\"\n", d); | |
469 | return 1; | |
470 | } | |
471 | filter_ifindex = req.t.tcm_ifindex; | |
472 | } else { | |
473 | fprintf(stderr, "Must specify netdevice \"dev\"\n"); | |
474 | return -1; | |
475 | } | |
476 | ||
120f556d JHS |
477 | if (q->parse_fopt(q, fhandle, argc, argv, &req.n)) |
478 | return 1; | |
479 | ||
120f556d JHS |
480 | if (!fhandle) { |
481 | fprintf(stderr, "Must specify filter \"handle\"\n"); | |
482 | return -1; | |
483 | } | |
484 | ||
485 | if (argc) { | |
486 | if (matches(*argv, "help") == 0) | |
487 | usage(); | |
ec2e005f SH |
488 | fprintf(stderr, |
489 | "Garbage instead of arguments \"%s ...\". Try \"tc filter help\".\n", | |
120f556d JHS |
490 | *argv); |
491 | return -1; | |
492 | } | |
493 | ||
86bf43c7 | 494 | if (rtnl_talk(&rth, &req.n, &answer) < 0) { |
120f556d JHS |
495 | fprintf(stderr, "We have an error talking to the kernel\n"); |
496 | return 2; | |
497 | } | |
498 | ||
249284ff | 499 | new_json_obj(json); |
86bf43c7 | 500 | print_filter(NULL, answer, (void *)stdout); |
249284ff | 501 | delete_json_obj(); |
120f556d | 502 | |
86bf43c7 | 503 | free(answer); |
120f556d JHS |
504 | return 0; |
505 | } | |
506 | ||
d1f28cf1 | 507 | static int tc_filter_list(int argc, char **argv) |
aba5acdf | 508 | { |
732f0346 JP |
509 | struct { |
510 | struct nlmsghdr n; | |
511 | struct tcmsg t; | |
512 | char buf[MAX_MSG]; | |
513 | } req = { | |
514 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)), | |
515 | .n.nlmsg_type = RTM_GETTFILTER, | |
516 | .t.tcm_parent = TC_H_UNSPEC, | |
517 | .t.tcm_family = AF_UNSPEC, | |
518 | }; | |
b317557f | 519 | char d[IFNAMSIZ] = {}; |
aba5acdf SH |
520 | __u32 prio = 0; |
521 | __u32 protocol = 0; | |
732f0346 | 522 | __u32 chain_index; |
aba5acdf SH |
523 | char *fhandle = NULL; |
524 | ||
aba5acdf SH |
525 | while (argc > 0) { |
526 | if (strcmp(*argv, "dev") == 0) { | |
527 | NEXT_ARG(); | |
528 | if (d[0]) | |
529 | duparg("dev", *argv); | |
530 | strncpy(d, *argv, sizeof(d)-1); | |
531 | } else if (strcmp(*argv, "root") == 0) { | |
732f0346 | 532 | if (req.t.tcm_parent) { |
ec2e005f SH |
533 | fprintf(stderr, |
534 | "Error: \"root\" is duplicate parent ID\n"); | |
024481bb | 535 | return -1; |
aba5acdf | 536 | } |
732f0346 | 537 | filter_parent = req.t.tcm_parent = TC_H_ROOT; |
8f9afdd5 | 538 | } else if (strcmp(*argv, "ingress") == 0) { |
732f0346 | 539 | if (req.t.tcm_parent) { |
ec2e005f SH |
540 | fprintf(stderr, |
541 | "Error: \"ingress\" is duplicate parent ID\n"); | |
8f9afdd5 DB |
542 | return -1; |
543 | } | |
544 | filter_parent = TC_H_MAKE(TC_H_CLSACT, | |
545 | TC_H_MIN_INGRESS); | |
732f0346 | 546 | req.t.tcm_parent = filter_parent; |
8f9afdd5 | 547 | } else if (strcmp(*argv, "egress") == 0) { |
732f0346 | 548 | if (req.t.tcm_parent) { |
ec2e005f SH |
549 | fprintf(stderr, |
550 | "Error: \"egress\" is duplicate parent ID\n"); | |
8f9afdd5 DB |
551 | return -1; |
552 | } | |
553 | filter_parent = TC_H_MAKE(TC_H_CLSACT, | |
554 | TC_H_MIN_EGRESS); | |
732f0346 | 555 | req.t.tcm_parent = filter_parent; |
aba5acdf SH |
556 | } else if (strcmp(*argv, "parent") == 0) { |
557 | __u32 handle; | |
32a121cb | 558 | |
aba5acdf | 559 | NEXT_ARG(); |
732f0346 | 560 | if (req.t.tcm_parent) |
aba5acdf SH |
561 | duparg("parent", *argv); |
562 | if (get_tc_classid(&handle, *argv)) | |
f1675d61 | 563 | invarg("invalid parent ID", *argv); |
732f0346 | 564 | filter_parent = req.t.tcm_parent = handle; |
aba5acdf SH |
565 | } else if (strcmp(*argv, "handle") == 0) { |
566 | NEXT_ARG(); | |
567 | if (fhandle) | |
568 | duparg("handle", *argv); | |
569 | fhandle = *argv; | |
570 | } else if (matches(*argv, "preference") == 0 || | |
571 | matches(*argv, "priority") == 0) { | |
572 | NEXT_ARG(); | |
573 | if (prio) | |
574 | duparg("priority", *argv); | |
575 | if (get_u32(&prio, *argv, 0)) | |
f1675d61 | 576 | invarg("invalid preference", *argv); |
aba5acdf SH |
577 | filter_prio = prio; |
578 | } else if (matches(*argv, "protocol") == 0) { | |
579 | __u16 res; | |
32a121cb | 580 | |
aba5acdf SH |
581 | NEXT_ARG(); |
582 | if (protocol) | |
583 | duparg("protocol", *argv); | |
584 | if (ll_proto_a2n(&res, *argv)) | |
f1675d61 | 585 | invarg("invalid protocol", *argv); |
aba5acdf SH |
586 | protocol = res; |
587 | filter_protocol = protocol; | |
732f0346 JP |
588 | } else if (matches(*argv, "chain") == 0) { |
589 | NEXT_ARG(); | |
590 | if (filter_chain_index_set) | |
591 | duparg("chain", *argv); | |
592 | if (get_u32(&chain_index, *argv, 0)) | |
593 | invarg("invalid chain index value", *argv); | |
594 | filter_chain_index_set = 1; | |
595 | filter_chain_index = chain_index; | |
aba5acdf SH |
596 | } else if (matches(*argv, "help") == 0) { |
597 | usage(); | |
598 | } else { | |
ec2e005f SH |
599 | fprintf(stderr, |
600 | " What is \"%s\"? Try \"tc filter help\"\n", | |
601 | *argv); | |
024481bb | 602 | return -1; |
aba5acdf SH |
603 | } |
604 | ||
605 | argc--; argv++; | |
606 | } | |
607 | ||
732f0346 | 608 | req.t.tcm_info = TC_H_MAKE(prio<<16, protocol); |
aba5acdf | 609 | |
3d0b7439 | 610 | ll_init_map(&rth); |
aba5acdf SH |
611 | |
612 | if (d[0]) { | |
732f0346 JP |
613 | req.t.tcm_ifindex = ll_name_to_index(d); |
614 | if (req.t.tcm_ifindex == 0) { | |
aba5acdf | 615 | fprintf(stderr, "Cannot find device \"%s\"\n", d); |
024481bb | 616 | return 1; |
aba5acdf | 617 | } |
732f0346 | 618 | filter_ifindex = req.t.tcm_ifindex; |
aba5acdf SH |
619 | } |
620 | ||
732f0346 JP |
621 | if (filter_chain_index_set) |
622 | addattr32(&req.n, sizeof(req), TCA_CHAIN, chain_index); | |
623 | ||
624 | if (rtnl_dump_request_n(&rth, &req.n) < 0) { | |
aba5acdf | 625 | perror("Cannot send dump request"); |
024481bb | 626 | return 1; |
aba5acdf SH |
627 | } |
628 | ||
249284ff | 629 | new_json_obj(json); |
3d0b7439 | 630 | if (rtnl_dump_filter(&rth, print_filter, stdout) < 0) { |
aba5acdf | 631 | fprintf(stderr, "Dump terminated\n"); |
024481bb | 632 | return 1; |
aba5acdf | 633 | } |
249284ff | 634 | delete_json_obj(); |
aba5acdf | 635 | |
aba5acdf SH |
636 | return 0; |
637 | } | |
638 | ||
639 | int do_filter(int argc, char **argv) | |
640 | { | |
641 | if (argc < 1) | |
642 | return tc_filter_list(0, NULL); | |
643 | if (matches(*argv, "add") == 0) | |
120f556d JHS |
644 | return tc_filter_modify(RTM_NEWTFILTER, NLM_F_EXCL|NLM_F_CREATE, |
645 | argc-1, argv+1); | |
aba5acdf SH |
646 | if (matches(*argv, "change") == 0) |
647 | return tc_filter_modify(RTM_NEWTFILTER, 0, argc-1, argv+1); | |
648 | if (matches(*argv, "replace") == 0) | |
120f556d JHS |
649 | return tc_filter_modify(RTM_NEWTFILTER, NLM_F_CREATE, argc-1, |
650 | argv+1); | |
aba5acdf SH |
651 | if (matches(*argv, "delete") == 0) |
652 | return tc_filter_modify(RTM_DELTFILTER, 0, argc-1, argv+1); | |
aba5acdf SH |
653 | if (matches(*argv, "get") == 0) |
654 | return tc_filter_get(RTM_GETTFILTER, 0, argc-1, argv+1); | |
aba5acdf SH |
655 | if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0 |
656 | || matches(*argv, "lst") == 0) | |
657 | return tc_filter_list(argc-1, argv+1); | |
e5d179d8 | 658 | if (matches(*argv, "help") == 0) { |
aba5acdf | 659 | usage(); |
e5d179d8 | 660 | return 0; |
32a121cb | 661 | } |
120f556d JHS |
662 | fprintf(stderr, "Command \"%s\" is unknown, try \"tc filter help\".\n", |
663 | *argv); | |
024481bb | 664 | return -1; |
aba5acdf | 665 | } |