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1 | /* | |
2 | * q_u32.c U32 filter. | |
3 | * | |
4 | * This program is free software; you can u32istribute 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 | * Match mark added by Catalin(ux aka Dino) BOIE <catab at umbrella.ro> [5 nov 2004] | |
11 | * | |
12 | */ | |
13 | ||
14 | #include <stdio.h> | |
15 | #include <stdlib.h> | |
16 | #include <unistd.h> | |
17 | #include <fcntl.h> | |
18 | #include <sys/socket.h> | |
19 | #include <netinet/in.h> | |
20 | #include <arpa/inet.h> | |
21 | #include <string.h> | |
22 | #include <linux/if.h> | |
23 | #include <linux/if_ether.h> | |
24 | ||
25 | #include "utils.h" | |
26 | #include "tc_util.h" | |
27 | ||
28 | static void explain(void) | |
29 | { | |
30 | fprintf(stderr, | |
31 | "Usage: ... u32 [ match SELECTOR ... ] [ link HTID ] [ classid CLASSID ]\n" | |
32 | " [ action ACTION_SPEC ] [ offset OFFSET_SPEC ]\n" | |
33 | " [ ht HTID ] [ hashkey HASHKEY_SPEC ]\n" | |
34 | " [ sample SAMPLE ] [skip_hw | skip_sw]\n" | |
35 | "or u32 divisor DIVISOR\n" | |
36 | "\n" | |
37 | "Where: SELECTOR := SAMPLE SAMPLE ...\n" | |
38 | " SAMPLE := { ip | ip6 | udp | tcp | icmp | u{32|16|8} | mark }\n" | |
39 | " SAMPLE_ARGS [ divisor DIVISOR ]\n" | |
40 | " FILTERID := X:Y:Z\n" | |
41 | "\nNOTE: CLASSID is parsed at hexadecimal input.\n"); | |
42 | } | |
43 | ||
44 | static int get_u32_handle(__u32 *handle, const char *str) | |
45 | { | |
46 | __u32 htid = 0, hash = 0, nodeid = 0; | |
47 | char *tmp = strchr(str, ':'); | |
48 | ||
49 | if (tmp == NULL) { | |
50 | if (memcmp("0x", str, 2) == 0) | |
51 | return get_u32(handle, str, 16); | |
52 | return -1; | |
53 | } | |
54 | htid = strtoul(str, &tmp, 16); | |
55 | if (tmp == str && *str != ':' && *str != 0) | |
56 | return -1; | |
57 | if (htid >= 0x1000) | |
58 | return -1; | |
59 | if (*tmp) { | |
60 | str = tmp + 1; | |
61 | hash = strtoul(str, &tmp, 16); | |
62 | if (tmp == str && *str != ':' && *str != 0) | |
63 | return -1; | |
64 | if (hash >= 0x100) | |
65 | return -1; | |
66 | if (*tmp) { | |
67 | str = tmp + 1; | |
68 | nodeid = strtoul(str, &tmp, 16); | |
69 | if (tmp == str && *str != 0) | |
70 | return -1; | |
71 | if (nodeid >= 0x1000) | |
72 | return -1; | |
73 | } | |
74 | } | |
75 | *handle = (htid<<20)|(hash<<12)|nodeid; | |
76 | return 0; | |
77 | } | |
78 | ||
79 | static char *sprint_u32_handle(__u32 handle, char *buf) | |
80 | { | |
81 | int bsize = SPRINT_BSIZE-1; | |
82 | __u32 htid = TC_U32_HTID(handle); | |
83 | __u32 hash = TC_U32_HASH(handle); | |
84 | __u32 nodeid = TC_U32_NODE(handle); | |
85 | char *b = buf; | |
86 | ||
87 | if (handle == 0) { | |
88 | snprintf(b, bsize, "none"); | |
89 | return b; | |
90 | } | |
91 | if (htid) { | |
92 | int l = snprintf(b, bsize, "%x:", htid>>20); | |
93 | ||
94 | bsize -= l; | |
95 | b += l; | |
96 | } | |
97 | if (nodeid|hash) { | |
98 | if (hash) { | |
99 | int l = snprintf(b, bsize, "%x", hash); | |
100 | ||
101 | bsize -= l; | |
102 | b += l; | |
103 | } | |
104 | if (nodeid) { | |
105 | int l = snprintf(b, bsize, ":%x", nodeid); | |
106 | ||
107 | bsize -= l; | |
108 | b += l; | |
109 | } | |
110 | } | |
111 | if (show_raw) | |
112 | snprintf(b, bsize, "[%08x] ", handle); | |
113 | return buf; | |
114 | } | |
115 | ||
116 | static int pack_key(struct tc_u32_sel *sel, __u32 key, __u32 mask, | |
117 | int off, int offmask) | |
118 | { | |
119 | int i; | |
120 | int hwm = sel->nkeys; | |
121 | ||
122 | key &= mask; | |
123 | ||
124 | for (i = 0; i < hwm; i++) { | |
125 | if (sel->keys[i].off == off && sel->keys[i].offmask == offmask) { | |
126 | __u32 intersect = mask & sel->keys[i].mask; | |
127 | ||
128 | if ((key ^ sel->keys[i].val) & intersect) | |
129 | return -1; | |
130 | sel->keys[i].val |= key; | |
131 | sel->keys[i].mask |= mask; | |
132 | return 0; | |
133 | } | |
134 | } | |
135 | ||
136 | if (hwm >= 128) | |
137 | return -1; | |
138 | if (off % 4) | |
139 | return -1; | |
140 | sel->keys[hwm].val = key; | |
141 | sel->keys[hwm].mask = mask; | |
142 | sel->keys[hwm].off = off; | |
143 | sel->keys[hwm].offmask = offmask; | |
144 | sel->nkeys++; | |
145 | return 0; | |
146 | } | |
147 | ||
148 | static int pack_key32(struct tc_u32_sel *sel, __u32 key, __u32 mask, | |
149 | int off, int offmask) | |
150 | { | |
151 | key = htonl(key); | |
152 | mask = htonl(mask); | |
153 | return pack_key(sel, key, mask, off, offmask); | |
154 | } | |
155 | ||
156 | static int pack_key16(struct tc_u32_sel *sel, __u32 key, __u32 mask, | |
157 | int off, int offmask) | |
158 | { | |
159 | if (key > 0xFFFF || mask > 0xFFFF) | |
160 | return -1; | |
161 | ||
162 | if ((off & 3) == 0) { | |
163 | key <<= 16; | |
164 | mask <<= 16; | |
165 | } | |
166 | off &= ~3; | |
167 | key = htonl(key); | |
168 | mask = htonl(mask); | |
169 | ||
170 | return pack_key(sel, key, mask, off, offmask); | |
171 | } | |
172 | ||
173 | static int pack_key8(struct tc_u32_sel *sel, __u32 key, __u32 mask, int off, | |
174 | int offmask) | |
175 | { | |
176 | if (key > 0xFF || mask > 0xFF) | |
177 | return -1; | |
178 | ||
179 | if ((off & 3) == 0) { | |
180 | key <<= 24; | |
181 | mask <<= 24; | |
182 | } else if ((off & 3) == 1) { | |
183 | key <<= 16; | |
184 | mask <<= 16; | |
185 | } else if ((off & 3) == 2) { | |
186 | key <<= 8; | |
187 | mask <<= 8; | |
188 | } | |
189 | off &= ~3; | |
190 | key = htonl(key); | |
191 | mask = htonl(mask); | |
192 | ||
193 | return pack_key(sel, key, mask, off, offmask); | |
194 | } | |
195 | ||
196 | ||
197 | static int parse_at(int *argc_p, char ***argv_p, int *off, int *offmask) | |
198 | { | |
199 | int argc = *argc_p; | |
200 | char **argv = *argv_p; | |
201 | char *p = *argv; | |
202 | ||
203 | if (argc <= 0) | |
204 | return -1; | |
205 | ||
206 | if (strlen(p) > strlen("nexthdr+") && | |
207 | memcmp(p, "nexthdr+", strlen("nexthdr+")) == 0) { | |
208 | *offmask = -1; | |
209 | p += strlen("nexthdr+"); | |
210 | } else if (matches(*argv, "nexthdr+") == 0) { | |
211 | NEXT_ARG(); | |
212 | *offmask = -1; | |
213 | p = *argv; | |
214 | } | |
215 | ||
216 | if (get_integer(off, p, 0)) | |
217 | return -1; | |
218 | argc--; argv++; | |
219 | ||
220 | *argc_p = argc; | |
221 | *argv_p = argv; | |
222 | return 0; | |
223 | } | |
224 | ||
225 | ||
226 | static int parse_u32(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, | |
227 | int off, int offmask) | |
228 | { | |
229 | int res = -1; | |
230 | int argc = *argc_p; | |
231 | char **argv = *argv_p; | |
232 | __u32 key; | |
233 | __u32 mask; | |
234 | ||
235 | if (argc < 2) | |
236 | return -1; | |
237 | ||
238 | if (get_u32(&key, *argv, 0)) | |
239 | return -1; | |
240 | argc--; argv++; | |
241 | ||
242 | if (get_u32(&mask, *argv, 16)) | |
243 | return -1; | |
244 | argc--; argv++; | |
245 | ||
246 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
247 | NEXT_ARG(); | |
248 | if (parse_at(&argc, &argv, &off, &offmask)) | |
249 | return -1; | |
250 | } | |
251 | ||
252 | res = pack_key32(sel, key, mask, off, offmask); | |
253 | *argc_p = argc; | |
254 | *argv_p = argv; | |
255 | return res; | |
256 | } | |
257 | ||
258 | static int parse_u16(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, | |
259 | int off, int offmask) | |
260 | { | |
261 | int res = -1; | |
262 | int argc = *argc_p; | |
263 | char **argv = *argv_p; | |
264 | __u32 key; | |
265 | __u32 mask; | |
266 | ||
267 | if (argc < 2) | |
268 | return -1; | |
269 | ||
270 | if (get_u32(&key, *argv, 0)) | |
271 | return -1; | |
272 | argc--; argv++; | |
273 | ||
274 | if (get_u32(&mask, *argv, 16)) | |
275 | return -1; | |
276 | argc--; argv++; | |
277 | ||
278 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
279 | NEXT_ARG(); | |
280 | if (parse_at(&argc, &argv, &off, &offmask)) | |
281 | return -1; | |
282 | } | |
283 | res = pack_key16(sel, key, mask, off, offmask); | |
284 | *argc_p = argc; | |
285 | *argv_p = argv; | |
286 | return res; | |
287 | } | |
288 | ||
289 | static int parse_u8(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, | |
290 | int off, int offmask) | |
291 | { | |
292 | int res = -1; | |
293 | int argc = *argc_p; | |
294 | char **argv = *argv_p; | |
295 | __u32 key; | |
296 | __u32 mask; | |
297 | ||
298 | if (argc < 2) | |
299 | return -1; | |
300 | ||
301 | if (get_u32(&key, *argv, 0)) | |
302 | return -1; | |
303 | argc--; argv++; | |
304 | ||
305 | if (get_u32(&mask, *argv, 16)) | |
306 | return -1; | |
307 | argc--; argv++; | |
308 | ||
309 | if (key > 0xFF || mask > 0xFF) | |
310 | return -1; | |
311 | ||
312 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
313 | NEXT_ARG(); | |
314 | if (parse_at(&argc, &argv, &off, &offmask)) | |
315 | return -1; | |
316 | } | |
317 | ||
318 | res = pack_key8(sel, key, mask, off, offmask); | |
319 | *argc_p = argc; | |
320 | *argv_p = argv; | |
321 | return res; | |
322 | } | |
323 | ||
324 | static int parse_ip_addr(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, | |
325 | int off) | |
326 | { | |
327 | int res = -1; | |
328 | int argc = *argc_p; | |
329 | char **argv = *argv_p; | |
330 | inet_prefix addr; | |
331 | __u32 mask; | |
332 | int offmask = 0; | |
333 | ||
334 | if (argc < 1) | |
335 | return -1; | |
336 | ||
337 | if (get_prefix_1(&addr, *argv, AF_INET)) | |
338 | return -1; | |
339 | argc--; argv++; | |
340 | ||
341 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
342 | NEXT_ARG(); | |
343 | if (parse_at(&argc, &argv, &off, &offmask)) | |
344 | return -1; | |
345 | } | |
346 | ||
347 | mask = 0; | |
348 | if (addr.bitlen) | |
349 | mask = htonl(0xFFFFFFFF << (32 - addr.bitlen)); | |
350 | if (pack_key(sel, addr.data[0], mask, off, offmask) < 0) | |
351 | return -1; | |
352 | res = 0; | |
353 | ||
354 | *argc_p = argc; | |
355 | *argv_p = argv; | |
356 | return res; | |
357 | } | |
358 | ||
359 | static int parse_ip6_addr(int *argc_p, char ***argv_p, | |
360 | struct tc_u32_sel *sel, int off) | |
361 | { | |
362 | int res = -1; | |
363 | int argc = *argc_p; | |
364 | char **argv = *argv_p; | |
365 | int plen = 128; | |
366 | int i; | |
367 | inet_prefix addr; | |
368 | int offmask = 0; | |
369 | ||
370 | if (argc < 1) | |
371 | return -1; | |
372 | ||
373 | if (get_prefix_1(&addr, *argv, AF_INET6)) | |
374 | return -1; | |
375 | argc--; argv++; | |
376 | ||
377 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
378 | NEXT_ARG(); | |
379 | if (parse_at(&argc, &argv, &off, &offmask)) | |
380 | return -1; | |
381 | } | |
382 | ||
383 | plen = addr.bitlen; | |
384 | for (i = 0; i < plen; i += 32) { | |
385 | if (i + 31 < plen) { | |
386 | res = pack_key(sel, addr.data[i / 32], | |
387 | 0xFFFFFFFF, off + 4 * (i / 32), offmask); | |
388 | if (res < 0) | |
389 | return -1; | |
390 | } else if (i < plen) { | |
391 | __u32 mask = htonl(0xFFFFFFFF << (32 - (plen - i))); | |
392 | ||
393 | res = pack_key(sel, addr.data[i / 32], | |
394 | mask, off + 4 * (i / 32), offmask); | |
395 | if (res < 0) | |
396 | return -1; | |
397 | } | |
398 | } | |
399 | res = 0; | |
400 | ||
401 | *argc_p = argc; | |
402 | *argv_p = argv; | |
403 | return res; | |
404 | } | |
405 | ||
406 | static int parse_ip6_class(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
407 | { | |
408 | int res = -1; | |
409 | int argc = *argc_p; | |
410 | char **argv = *argv_p; | |
411 | __u32 key; | |
412 | __u32 mask; | |
413 | int off = 0; | |
414 | int offmask = 0; | |
415 | ||
416 | if (argc < 2) | |
417 | return -1; | |
418 | ||
419 | if (get_u32(&key, *argv, 0)) | |
420 | return -1; | |
421 | argc--; argv++; | |
422 | ||
423 | if (get_u32(&mask, *argv, 16)) | |
424 | return -1; | |
425 | argc--; argv++; | |
426 | ||
427 | if (key > 0xFF || mask > 0xFF) | |
428 | return -1; | |
429 | ||
430 | key <<= 20; | |
431 | mask <<= 20; | |
432 | key = htonl(key); | |
433 | mask = htonl(mask); | |
434 | ||
435 | res = pack_key(sel, key, mask, off, offmask); | |
436 | if (res < 0) | |
437 | return -1; | |
438 | ||
439 | *argc_p = argc; | |
440 | *argv_p = argv; | |
441 | return 0; | |
442 | } | |
443 | ||
444 | static int parse_ether_addr(int *argc_p, char ***argv_p, | |
445 | struct tc_u32_sel *sel, int off) | |
446 | { | |
447 | int res = -1; | |
448 | int argc = *argc_p; | |
449 | char **argv = *argv_p; | |
450 | __u8 addr[6]; | |
451 | int offmask = 0; | |
452 | int i; | |
453 | ||
454 | if (argc < 1) | |
455 | return -1; | |
456 | ||
457 | if (sscanf(*argv, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", | |
458 | addr + 0, addr + 1, addr + 2, | |
459 | addr + 3, addr + 4, addr + 5) != 6) { | |
460 | fprintf(stderr, "parse_ether_addr: improperly formed address '%s'\n", | |
461 | *argv); | |
462 | return -1; | |
463 | } | |
464 | ||
465 | argc--; argv++; | |
466 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
467 | NEXT_ARG(); | |
468 | if (parse_at(&argc, &argv, &off, &offmask)) | |
469 | return -1; | |
470 | } | |
471 | ||
472 | for (i = 0; i < 6; i++) { | |
473 | res = pack_key8(sel, addr[i], 0xFF, off + i, offmask); | |
474 | if (res < 0) | |
475 | return -1; | |
476 | } | |
477 | ||
478 | *argc_p = argc; | |
479 | *argv_p = argv; | |
480 | return res; | |
481 | } | |
482 | ||
483 | static int parse_ip(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
484 | { | |
485 | int res = -1; | |
486 | int argc = *argc_p; | |
487 | char **argv = *argv_p; | |
488 | ||
489 | if (argc < 2) | |
490 | return -1; | |
491 | ||
492 | if (strcmp(*argv, "src") == 0) { | |
493 | NEXT_ARG(); | |
494 | res = parse_ip_addr(&argc, &argv, sel, 12); | |
495 | } else if (strcmp(*argv, "dst") == 0) { | |
496 | NEXT_ARG(); | |
497 | res = parse_ip_addr(&argc, &argv, sel, 16); | |
498 | } else if (strcmp(*argv, "tos") == 0 || | |
499 | matches(*argv, "dsfield") == 0 || | |
500 | matches(*argv, "precedence") == 0) { | |
501 | NEXT_ARG(); | |
502 | res = parse_u8(&argc, &argv, sel, 1, 0); | |
503 | } else if (strcmp(*argv, "ihl") == 0) { | |
504 | NEXT_ARG(); | |
505 | res = parse_u8(&argc, &argv, sel, 0, 0); | |
506 | } else if (strcmp(*argv, "protocol") == 0) { | |
507 | NEXT_ARG(); | |
508 | res = parse_u8(&argc, &argv, sel, 9, 0); | |
509 | } else if (strcmp(*argv, "nofrag") == 0) { | |
510 | argc--; argv++; | |
511 | res = pack_key16(sel, 0, 0x3FFF, 6, 0); | |
512 | } else if (strcmp(*argv, "firstfrag") == 0) { | |
513 | argc--; argv++; | |
514 | res = pack_key16(sel, 0x2000, 0x3FFF, 6, 0); | |
515 | } else if (strcmp(*argv, "df") == 0) { | |
516 | argc--; argv++; | |
517 | res = pack_key16(sel, 0x4000, 0x4000, 6, 0); | |
518 | } else if (strcmp(*argv, "mf") == 0) { | |
519 | argc--; argv++; | |
520 | res = pack_key16(sel, 0x2000, 0x2000, 6, 0); | |
521 | } else if (strcmp(*argv, "dport") == 0) { | |
522 | NEXT_ARG(); | |
523 | res = parse_u16(&argc, &argv, sel, 22, 0); | |
524 | } else if (strcmp(*argv, "sport") == 0) { | |
525 | NEXT_ARG(); | |
526 | res = parse_u16(&argc, &argv, sel, 20, 0); | |
527 | } else if (strcmp(*argv, "icmp_type") == 0) { | |
528 | NEXT_ARG(); | |
529 | res = parse_u8(&argc, &argv, sel, 20, 0); | |
530 | } else if (strcmp(*argv, "icmp_code") == 0) { | |
531 | NEXT_ARG(); | |
532 | res = parse_u8(&argc, &argv, sel, 21, 0); | |
533 | } else | |
534 | return -1; | |
535 | ||
536 | *argc_p = argc; | |
537 | *argv_p = argv; | |
538 | return res; | |
539 | } | |
540 | ||
541 | static int parse_ip6(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
542 | { | |
543 | int res = -1; | |
544 | int argc = *argc_p; | |
545 | char **argv = *argv_p; | |
546 | ||
547 | if (argc < 2) | |
548 | return -1; | |
549 | ||
550 | if (strcmp(*argv, "src") == 0) { | |
551 | NEXT_ARG(); | |
552 | res = parse_ip6_addr(&argc, &argv, sel, 8); | |
553 | } else if (strcmp(*argv, "dst") == 0) { | |
554 | NEXT_ARG(); | |
555 | res = parse_ip6_addr(&argc, &argv, sel, 24); | |
556 | } else if (strcmp(*argv, "priority") == 0) { | |
557 | NEXT_ARG(); | |
558 | res = parse_ip6_class(&argc, &argv, sel); | |
559 | } else if (strcmp(*argv, "protocol") == 0) { | |
560 | NEXT_ARG(); | |
561 | res = parse_u8(&argc, &argv, sel, 6, 0); | |
562 | } else if (strcmp(*argv, "flowlabel") == 0) { | |
563 | NEXT_ARG(); | |
564 | res = parse_u32(&argc, &argv, sel, 0, 0); | |
565 | } else if (strcmp(*argv, "dport") == 0) { | |
566 | NEXT_ARG(); | |
567 | res = parse_u16(&argc, &argv, sel, 42, 0); | |
568 | } else if (strcmp(*argv, "sport") == 0) { | |
569 | NEXT_ARG(); | |
570 | res = parse_u16(&argc, &argv, sel, 40, 0); | |
571 | } else if (strcmp(*argv, "icmp_type") == 0) { | |
572 | NEXT_ARG(); | |
573 | res = parse_u8(&argc, &argv, sel, 40, 0); | |
574 | } else if (strcmp(*argv, "icmp_code") == 0) { | |
575 | NEXT_ARG(); | |
576 | res = parse_u8(&argc, &argv, sel, 41, 1); | |
577 | } else | |
578 | return -1; | |
579 | ||
580 | *argc_p = argc; | |
581 | *argv_p = argv; | |
582 | return res; | |
583 | } | |
584 | ||
585 | static int parse_ether(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
586 | { | |
587 | int res = -1; | |
588 | int argc = *argc_p; | |
589 | char **argv = *argv_p; | |
590 | ||
591 | if (argc < 2) | |
592 | return -1; | |
593 | ||
594 | if (strcmp(*argv, "src") == 0) { | |
595 | NEXT_ARG(); | |
596 | res = parse_ether_addr(&argc, &argv, sel, -8); | |
597 | } else if (strcmp(*argv, "dst") == 0) { | |
598 | NEXT_ARG(); | |
599 | res = parse_ether_addr(&argc, &argv, sel, -14); | |
600 | } else { | |
601 | fprintf(stderr, "Unknown match: ether %s\n", *argv); | |
602 | return -1; | |
603 | } | |
604 | ||
605 | *argc_p = argc; | |
606 | *argv_p = argv; | |
607 | return res; | |
608 | } | |
609 | ||
610 | #define parse_tcp parse_udp | |
611 | static int parse_udp(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
612 | { | |
613 | int res = -1; | |
614 | int argc = *argc_p; | |
615 | char **argv = *argv_p; | |
616 | ||
617 | if (argc < 2) | |
618 | return -1; | |
619 | ||
620 | if (strcmp(*argv, "src") == 0) { | |
621 | NEXT_ARG(); | |
622 | res = parse_u16(&argc, &argv, sel, 0, -1); | |
623 | } else if (strcmp(*argv, "dst") == 0) { | |
624 | NEXT_ARG(); | |
625 | res = parse_u16(&argc, &argv, sel, 2, -1); | |
626 | } else | |
627 | return -1; | |
628 | ||
629 | *argc_p = argc; | |
630 | *argv_p = argv; | |
631 | return res; | |
632 | } | |
633 | ||
634 | ||
635 | static int parse_icmp(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
636 | { | |
637 | int res = -1; | |
638 | int argc = *argc_p; | |
639 | char **argv = *argv_p; | |
640 | ||
641 | if (argc < 2) | |
642 | return -1; | |
643 | ||
644 | if (strcmp(*argv, "type") == 0) { | |
645 | NEXT_ARG(); | |
646 | res = parse_u8(&argc, &argv, sel, 0, -1); | |
647 | } else if (strcmp(*argv, "code") == 0) { | |
648 | NEXT_ARG(); | |
649 | res = parse_u8(&argc, &argv, sel, 1, -1); | |
650 | } else | |
651 | return -1; | |
652 | ||
653 | *argc_p = argc; | |
654 | *argv_p = argv; | |
655 | return res; | |
656 | } | |
657 | ||
658 | static int parse_mark(int *argc_p, char ***argv_p, struct nlmsghdr *n) | |
659 | { | |
660 | int res = -1; | |
661 | int argc = *argc_p; | |
662 | char **argv = *argv_p; | |
663 | struct tc_u32_mark mark; | |
664 | ||
665 | if (argc <= 1) | |
666 | return -1; | |
667 | ||
668 | if (get_u32(&mark.val, *argv, 0)) { | |
669 | fprintf(stderr, "Illegal \"mark\" value\n"); | |
670 | return -1; | |
671 | } | |
672 | NEXT_ARG(); | |
673 | ||
674 | if (get_u32(&mark.mask, *argv, 0)) { | |
675 | fprintf(stderr, "Illegal \"mark\" mask\n"); | |
676 | return -1; | |
677 | } | |
678 | NEXT_ARG(); | |
679 | ||
680 | if ((mark.val & mark.mask) != mark.val) { | |
681 | fprintf(stderr, "Illegal \"mark\" (impossible combination)\n"); | |
682 | return -1; | |
683 | } | |
684 | ||
685 | addattr_l(n, MAX_MSG, TCA_U32_MARK, &mark, sizeof(mark)); | |
686 | res = 0; | |
687 | ||
688 | *argc_p = argc; | |
689 | *argv_p = argv; | |
690 | return res; | |
691 | } | |
692 | ||
693 | static int parse_selector(int *argc_p, char ***argv_p, | |
694 | struct tc_u32_sel *sel, struct nlmsghdr *n) | |
695 | { | |
696 | int argc = *argc_p; | |
697 | char **argv = *argv_p; | |
698 | int res = -1; | |
699 | ||
700 | if (argc <= 0) | |
701 | return -1; | |
702 | ||
703 | if (matches(*argv, "u32") == 0) { | |
704 | NEXT_ARG(); | |
705 | res = parse_u32(&argc, &argv, sel, 0, 0); | |
706 | } else if (matches(*argv, "u16") == 0) { | |
707 | NEXT_ARG(); | |
708 | res = parse_u16(&argc, &argv, sel, 0, 0); | |
709 | } else if (matches(*argv, "u8") == 0) { | |
710 | NEXT_ARG(); | |
711 | res = parse_u8(&argc, &argv, sel, 0, 0); | |
712 | } else if (matches(*argv, "ip") == 0) { | |
713 | NEXT_ARG(); | |
714 | res = parse_ip(&argc, &argv, sel); | |
715 | } else if (matches(*argv, "ip6") == 0) { | |
716 | NEXT_ARG(); | |
717 | res = parse_ip6(&argc, &argv, sel); | |
718 | } else if (matches(*argv, "udp") == 0) { | |
719 | NEXT_ARG(); | |
720 | res = parse_udp(&argc, &argv, sel); | |
721 | } else if (matches(*argv, "tcp") == 0) { | |
722 | NEXT_ARG(); | |
723 | res = parse_tcp(&argc, &argv, sel); | |
724 | } else if (matches(*argv, "icmp") == 0) { | |
725 | NEXT_ARG(); | |
726 | res = parse_icmp(&argc, &argv, sel); | |
727 | } else if (matches(*argv, "mark") == 0) { | |
728 | NEXT_ARG(); | |
729 | res = parse_mark(&argc, &argv, n); | |
730 | } else if (matches(*argv, "ether") == 0) { | |
731 | NEXT_ARG(); | |
732 | res = parse_ether(&argc, &argv, sel); | |
733 | } else | |
734 | return -1; | |
735 | ||
736 | *argc_p = argc; | |
737 | *argv_p = argv; | |
738 | return res; | |
739 | } | |
740 | ||
741 | static int parse_offset(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
742 | { | |
743 | int argc = *argc_p; | |
744 | char **argv = *argv_p; | |
745 | ||
746 | while (argc > 0) { | |
747 | if (matches(*argv, "plus") == 0) { | |
748 | int off; | |
749 | ||
750 | NEXT_ARG(); | |
751 | if (get_integer(&off, *argv, 0)) | |
752 | return -1; | |
753 | sel->off = off; | |
754 | sel->flags |= TC_U32_OFFSET; | |
755 | } else if (matches(*argv, "at") == 0) { | |
756 | int off; | |
757 | ||
758 | NEXT_ARG(); | |
759 | if (get_integer(&off, *argv, 0)) | |
760 | return -1; | |
761 | sel->offoff = off; | |
762 | if (off%2) { | |
763 | fprintf(stderr, "offset \"at\" must be even\n"); | |
764 | return -1; | |
765 | } | |
766 | sel->flags |= TC_U32_VAROFFSET; | |
767 | } else if (matches(*argv, "mask") == 0) { | |
768 | NEXT_ARG(); | |
769 | if (get_be16(&sel->offmask, *argv, 16)) | |
770 | return -1; | |
771 | sel->flags |= TC_U32_VAROFFSET; | |
772 | } else if (matches(*argv, "shift") == 0) { | |
773 | int shift; | |
774 | ||
775 | NEXT_ARG(); | |
776 | if (get_integer(&shift, *argv, 0)) | |
777 | return -1; | |
778 | sel->offshift = shift; | |
779 | sel->flags |= TC_U32_VAROFFSET; | |
780 | } else if (matches(*argv, "eat") == 0) { | |
781 | sel->flags |= TC_U32_EAT; | |
782 | } else { | |
783 | break; | |
784 | } | |
785 | argc--; argv++; | |
786 | } | |
787 | ||
788 | *argc_p = argc; | |
789 | *argv_p = argv; | |
790 | return 0; | |
791 | } | |
792 | ||
793 | static int parse_hashkey(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
794 | { | |
795 | int argc = *argc_p; | |
796 | char **argv = *argv_p; | |
797 | ||
798 | while (argc > 0) { | |
799 | if (matches(*argv, "mask") == 0) { | |
800 | NEXT_ARG(); | |
801 | if (get_be32(&sel->hmask, *argv, 16)) | |
802 | return -1; | |
803 | } else if (matches(*argv, "at") == 0) { | |
804 | int num; | |
805 | ||
806 | NEXT_ARG(); | |
807 | if (get_integer(&num, *argv, 0)) | |
808 | return -1; | |
809 | if (num%4) | |
810 | return -1; | |
811 | sel->hoff = num; | |
812 | } else { | |
813 | break; | |
814 | } | |
815 | argc--; argv++; | |
816 | } | |
817 | ||
818 | *argc_p = argc; | |
819 | *argv_p = argv; | |
820 | return 0; | |
821 | } | |
822 | ||
823 | static void print_ipv4(FILE *f, const struct tc_u32_key *key) | |
824 | { | |
825 | char abuf[256]; | |
826 | ||
827 | switch (key->off) { | |
828 | case 0: | |
829 | switch (ntohl(key->mask)) { | |
830 | case 0x0f000000: | |
831 | fprintf(f, "\n match IP ihl %u", | |
832 | ntohl(key->val) >> 24); | |
833 | return; | |
834 | case 0x00ff0000: | |
835 | fprintf(f, "\n match IP dsfield %#x", | |
836 | ntohl(key->val) >> 16); | |
837 | return; | |
838 | } | |
839 | break; | |
840 | case 8: | |
841 | if (ntohl(key->mask) == 0x00ff0000) { | |
842 | fprintf(f, "\n match IP protocol %d", | |
843 | ntohl(key->val) >> 16); | |
844 | return; | |
845 | } | |
846 | break; | |
847 | case 12: | |
848 | case 16: { | |
849 | int bits = mask2bits(key->mask); | |
850 | ||
851 | if (bits >= 0) { | |
852 | fprintf(f, "\n %s %s/%d", | |
853 | key->off == 12 ? "match IP src" : "match IP dst", | |
854 | inet_ntop(AF_INET, &key->val, | |
855 | abuf, sizeof(abuf)), | |
856 | bits); | |
857 | return; | |
858 | } | |
859 | } | |
860 | break; | |
861 | ||
862 | case 20: | |
863 | switch (ntohl(key->mask)) { | |
864 | case 0x0000ffff: | |
865 | fprintf(f, "\n match dport %u", | |
866 | ntohl(key->val) & 0xffff); | |
867 | return; | |
868 | case 0xffff0000: | |
869 | fprintf(f, "\n match sport %u", | |
870 | ntohl(key->val) >> 16); | |
871 | return; | |
872 | case 0xffffffff: | |
873 | fprintf(f, "\n match dport %u, match sport %u", | |
874 | ntohl(key->val) & 0xffff, | |
875 | ntohl(key->val) >> 16); | |
876 | ||
877 | return; | |
878 | } | |
879 | /* XXX: Default print_raw */ | |
880 | } | |
881 | } | |
882 | ||
883 | static void print_ipv6(FILE *f, const struct tc_u32_key *key) | |
884 | { | |
885 | char abuf[256]; | |
886 | ||
887 | switch (key->off) { | |
888 | case 0: | |
889 | switch (ntohl(key->mask)) { | |
890 | case 0x0f000000: | |
891 | fprintf(f, "\n match IP ihl %u", | |
892 | ntohl(key->val) >> 24); | |
893 | return; | |
894 | case 0x00ff0000: | |
895 | fprintf(f, "\n match IP dsfield %#x", | |
896 | ntohl(key->val) >> 16); | |
897 | return; | |
898 | } | |
899 | break; | |
900 | case 8: | |
901 | if (ntohl(key->mask) == 0x00ff0000) { | |
902 | fprintf(f, "\n match IP protocol %d", | |
903 | ntohl(key->val) >> 16); | |
904 | return; | |
905 | } | |
906 | break; | |
907 | case 12: | |
908 | case 16: { | |
909 | int bits = mask2bits(key->mask); | |
910 | ||
911 | if (bits >= 0) { | |
912 | fprintf(f, "\n %s %s/%d", | |
913 | key->off == 12 ? "match IP src" : "match IP dst", | |
914 | inet_ntop(AF_INET, &key->val, | |
915 | abuf, sizeof(abuf)), | |
916 | bits); | |
917 | return; | |
918 | } | |
919 | } | |
920 | break; | |
921 | ||
922 | case 20: | |
923 | switch (ntohl(key->mask)) { | |
924 | case 0x0000ffff: | |
925 | fprintf(f, "\n match sport %u", | |
926 | ntohl(key->val) & 0xffff); | |
927 | return; | |
928 | case 0xffff0000: | |
929 | fprintf(f, "\n match dport %u", | |
930 | ntohl(key->val) >> 16); | |
931 | return; | |
932 | case 0xffffffff: | |
933 | fprintf(f, "\n match sport %u, match dport %u", | |
934 | ntohl(key->val) & 0xffff, | |
935 | ntohl(key->val) >> 16); | |
936 | ||
937 | return; | |
938 | } | |
939 | /* XXX: Default print_raw */ | |
940 | } | |
941 | } | |
942 | ||
943 | static void print_raw(FILE *f, const struct tc_u32_key *key) | |
944 | { | |
945 | fprintf(f, "\n match %08x/%08x at %s%d", | |
946 | (unsigned int)ntohl(key->val), | |
947 | (unsigned int)ntohl(key->mask), | |
948 | key->offmask ? "nexthdr+" : "", | |
949 | key->off); | |
950 | } | |
951 | ||
952 | static const struct { | |
953 | __u16 proto; | |
954 | __u16 pad; | |
955 | void (*pprinter)(FILE *f, const struct tc_u32_key *key); | |
956 | } u32_pprinters[] = { | |
957 | {0, 0, print_raw}, | |
958 | {ETH_P_IP, 0, print_ipv4}, | |
959 | {ETH_P_IPV6, 0, print_ipv6}, | |
960 | }; | |
961 | ||
962 | static void show_keys(FILE *f, const struct tc_u32_key *key) | |
963 | { | |
964 | int i = 0; | |
965 | ||
966 | if (!pretty) | |
967 | goto show_k; | |
968 | ||
969 | for (i = 0; i < ARRAY_SIZE(u32_pprinters); i++) { | |
970 | if (u32_pprinters[i].proto == ntohs(f_proto)) { | |
971 | show_k: | |
972 | u32_pprinters[i].pprinter(f, key); | |
973 | return; | |
974 | } | |
975 | } | |
976 | ||
977 | i = 0; | |
978 | goto show_k; | |
979 | } | |
980 | ||
981 | static int u32_parse_opt(struct filter_util *qu, char *handle, | |
982 | int argc, char **argv, struct nlmsghdr *n) | |
983 | { | |
984 | struct { | |
985 | struct tc_u32_sel sel; | |
986 | struct tc_u32_key keys[128]; | |
987 | } sel = {}; | |
988 | struct tcmsg *t = NLMSG_DATA(n); | |
989 | struct rtattr *tail; | |
990 | int sel_ok = 0, terminal_ok = 0; | |
991 | int sample_ok = 0; | |
992 | __u32 htid = 0; | |
993 | __u32 order = 0; | |
994 | __u32 flags = 0; | |
995 | ||
996 | if (handle && get_u32_handle(&t->tcm_handle, handle)) { | |
997 | fprintf(stderr, "Illegal filter ID\n"); | |
998 | return -1; | |
999 | } | |
1000 | ||
1001 | if (argc == 0) | |
1002 | return 0; | |
1003 | ||
1004 | tail = addattr_nest(n, MAX_MSG, TCA_OPTIONS); | |
1005 | ||
1006 | while (argc > 0) { | |
1007 | if (matches(*argv, "match") == 0) { | |
1008 | NEXT_ARG(); | |
1009 | if (parse_selector(&argc, &argv, &sel.sel, n)) { | |
1010 | fprintf(stderr, "Illegal \"match\"\n"); | |
1011 | return -1; | |
1012 | } | |
1013 | sel_ok++; | |
1014 | continue; | |
1015 | } else if (matches(*argv, "offset") == 0) { | |
1016 | NEXT_ARG(); | |
1017 | if (parse_offset(&argc, &argv, &sel.sel)) { | |
1018 | fprintf(stderr, "Illegal \"offset\"\n"); | |
1019 | return -1; | |
1020 | } | |
1021 | continue; | |
1022 | } else if (matches(*argv, "hashkey") == 0) { | |
1023 | NEXT_ARG(); | |
1024 | if (parse_hashkey(&argc, &argv, &sel.sel)) { | |
1025 | fprintf(stderr, "Illegal \"hashkey\"\n"); | |
1026 | return -1; | |
1027 | } | |
1028 | continue; | |
1029 | } else if (matches(*argv, "classid") == 0 || | |
1030 | strcmp(*argv, "flowid") == 0) { | |
1031 | unsigned int flowid; | |
1032 | ||
1033 | NEXT_ARG(); | |
1034 | if (get_tc_classid(&flowid, *argv)) { | |
1035 | fprintf(stderr, "Illegal \"classid\"\n"); | |
1036 | return -1; | |
1037 | } | |
1038 | addattr_l(n, MAX_MSG, TCA_U32_CLASSID, &flowid, 4); | |
1039 | sel.sel.flags |= TC_U32_TERMINAL; | |
1040 | } else if (matches(*argv, "divisor") == 0) { | |
1041 | unsigned int divisor; | |
1042 | ||
1043 | NEXT_ARG(); | |
1044 | if (get_unsigned(&divisor, *argv, 0) || | |
1045 | divisor == 0 || | |
1046 | divisor > 0x100 || ((divisor - 1) & divisor)) { | |
1047 | fprintf(stderr, "Illegal \"divisor\"\n"); | |
1048 | return -1; | |
1049 | } | |
1050 | addattr_l(n, MAX_MSG, TCA_U32_DIVISOR, &divisor, 4); | |
1051 | } else if (matches(*argv, "order") == 0) { | |
1052 | NEXT_ARG(); | |
1053 | if (get_u32(&order, *argv, 0)) { | |
1054 | fprintf(stderr, "Illegal \"order\"\n"); | |
1055 | return -1; | |
1056 | } | |
1057 | } else if (strcmp(*argv, "link") == 0) { | |
1058 | unsigned int linkid; | |
1059 | ||
1060 | NEXT_ARG(); | |
1061 | if (get_u32_handle(&linkid, *argv)) { | |
1062 | fprintf(stderr, "Illegal \"link\"\n"); | |
1063 | return -1; | |
1064 | } | |
1065 | if (linkid && TC_U32_NODE(linkid)) { | |
1066 | fprintf(stderr, "\"link\" must be a hash table.\n"); | |
1067 | return -1; | |
1068 | } | |
1069 | addattr_l(n, MAX_MSG, TCA_U32_LINK, &linkid, 4); | |
1070 | } else if (strcmp(*argv, "ht") == 0) { | |
1071 | unsigned int ht; | |
1072 | ||
1073 | NEXT_ARG(); | |
1074 | if (get_u32_handle(&ht, *argv)) { | |
1075 | fprintf(stderr, "Illegal \"ht\"\n"); | |
1076 | return -1; | |
1077 | } | |
1078 | if (handle && TC_U32_NODE(ht)) { | |
1079 | fprintf(stderr, "\"ht\" must be a hash table.\n"); | |
1080 | return -1; | |
1081 | } | |
1082 | if (sample_ok) | |
1083 | htid = (htid & 0xFF000) | (ht & 0xFFF00000); | |
1084 | else | |
1085 | htid = (ht & 0xFFFFF000); | |
1086 | } else if (strcmp(*argv, "sample") == 0) { | |
1087 | __u32 hash; | |
1088 | unsigned int divisor = 0x100; | |
1089 | struct { | |
1090 | struct tc_u32_sel sel; | |
1091 | struct tc_u32_key keys[4]; | |
1092 | } sel2 = {}; | |
1093 | ||
1094 | NEXT_ARG(); | |
1095 | if (parse_selector(&argc, &argv, &sel2.sel, n)) { | |
1096 | fprintf(stderr, "Illegal \"sample\"\n"); | |
1097 | return -1; | |
1098 | } | |
1099 | if (sel2.sel.nkeys != 1) { | |
1100 | fprintf(stderr, "\"sample\" must contain exactly ONE key.\n"); | |
1101 | return -1; | |
1102 | } | |
1103 | if (*argv != 0 && strcmp(*argv, "divisor") == 0) { | |
1104 | NEXT_ARG(); | |
1105 | if (get_unsigned(&divisor, *argv, 0) || | |
1106 | divisor == 0 || divisor > 0x100 || | |
1107 | ((divisor - 1) & divisor)) { | |
1108 | fprintf(stderr, "Illegal sample \"divisor\"\n"); | |
1109 | return -1; | |
1110 | } | |
1111 | NEXT_ARG(); | |
1112 | } | |
1113 | hash = sel2.keys[0].val & sel2.keys[0].mask; | |
1114 | hash ^= hash >> 16; | |
1115 | hash ^= hash >> 8; | |
1116 | htid = ((hash % divisor) << 12) | (htid & 0xFFF00000); | |
1117 | sample_ok = 1; | |
1118 | continue; | |
1119 | } else if (strcmp(*argv, "indev") == 0) { | |
1120 | char ind[IFNAMSIZ + 1] = {}; | |
1121 | ||
1122 | argc--; | |
1123 | argv++; | |
1124 | if (argc < 1) { | |
1125 | fprintf(stderr, "Illegal indev\n"); | |
1126 | return -1; | |
1127 | } | |
1128 | strncpy(ind, *argv, sizeof(ind) - 1); | |
1129 | addattr_l(n, MAX_MSG, TCA_U32_INDEV, ind, | |
1130 | strlen(ind) + 1); | |
1131 | ||
1132 | } else if (matches(*argv, "action") == 0) { | |
1133 | NEXT_ARG(); | |
1134 | if (parse_action(&argc, &argv, TCA_U32_ACT, n)) { | |
1135 | fprintf(stderr, "Illegal \"action\"\n"); | |
1136 | return -1; | |
1137 | } | |
1138 | terminal_ok++; | |
1139 | continue; | |
1140 | ||
1141 | } else if (matches(*argv, "police") == 0) { | |
1142 | NEXT_ARG(); | |
1143 | if (parse_police(&argc, &argv, TCA_U32_POLICE, n)) { | |
1144 | fprintf(stderr, "Illegal \"police\"\n"); | |
1145 | return -1; | |
1146 | } | |
1147 | terminal_ok++; | |
1148 | continue; | |
1149 | } else if (strcmp(*argv, "skip_hw") == 0) { | |
1150 | flags |= TCA_CLS_FLAGS_SKIP_HW; | |
1151 | } else if (strcmp(*argv, "skip_sw") == 0) { | |
1152 | flags |= TCA_CLS_FLAGS_SKIP_SW; | |
1153 | } else if (strcmp(*argv, "help") == 0) { | |
1154 | explain(); | |
1155 | return -1; | |
1156 | } else { | |
1157 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
1158 | explain(); | |
1159 | return -1; | |
1160 | } | |
1161 | argc--; argv++; | |
1162 | } | |
1163 | ||
1164 | /* We don't necessarily need class/flowids */ | |
1165 | if (terminal_ok) | |
1166 | sel.sel.flags |= TC_U32_TERMINAL; | |
1167 | ||
1168 | if (order) { | |
1169 | if (TC_U32_NODE(t->tcm_handle) && | |
1170 | order != TC_U32_NODE(t->tcm_handle)) { | |
1171 | fprintf(stderr, "\"order\" contradicts \"handle\"\n"); | |
1172 | return -1; | |
1173 | } | |
1174 | t->tcm_handle |= order; | |
1175 | } | |
1176 | ||
1177 | if (htid) | |
1178 | addattr_l(n, MAX_MSG, TCA_U32_HASH, &htid, 4); | |
1179 | if (sel_ok) | |
1180 | addattr_l(n, MAX_MSG, TCA_U32_SEL, &sel, | |
1181 | sizeof(sel.sel) + | |
1182 | sel.sel.nkeys * sizeof(struct tc_u32_key)); | |
1183 | if (flags) { | |
1184 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | | |
1185 | TCA_CLS_FLAGS_SKIP_SW))) { | |
1186 | fprintf(stderr, | |
1187 | "skip_hw and skip_sw are mutually exclusive\n"); | |
1188 | return -1; | |
1189 | } | |
1190 | addattr_l(n, MAX_MSG, TCA_U32_FLAGS, &flags, 4); | |
1191 | } | |
1192 | ||
1193 | addattr_nest_end(n, tail); | |
1194 | return 0; | |
1195 | } | |
1196 | ||
1197 | static int u32_print_opt(struct filter_util *qu, FILE *f, struct rtattr *opt, | |
1198 | __u32 handle) | |
1199 | { | |
1200 | struct rtattr *tb[TCA_U32_MAX + 1]; | |
1201 | struct tc_u32_sel *sel = NULL; | |
1202 | struct tc_u32_pcnt *pf = NULL; | |
1203 | ||
1204 | if (opt == NULL) | |
1205 | return 0; | |
1206 | ||
1207 | parse_rtattr_nested(tb, TCA_U32_MAX, opt); | |
1208 | ||
1209 | if (handle) { | |
1210 | SPRINT_BUF(b1); | |
1211 | fprintf(f, "fh %s ", sprint_u32_handle(handle, b1)); | |
1212 | } | |
1213 | ||
1214 | if (TC_U32_NODE(handle)) | |
1215 | fprintf(f, "order %d ", TC_U32_NODE(handle)); | |
1216 | ||
1217 | if (tb[TCA_U32_SEL]) { | |
1218 | if (RTA_PAYLOAD(tb[TCA_U32_SEL]) < sizeof(*sel)) | |
1219 | return -1; | |
1220 | ||
1221 | sel = RTA_DATA(tb[TCA_U32_SEL]); | |
1222 | } | |
1223 | ||
1224 | if (tb[TCA_U32_DIVISOR]) { | |
1225 | fprintf(f, "ht divisor %d ", | |
1226 | rta_getattr_u32(tb[TCA_U32_DIVISOR])); | |
1227 | } else if (tb[TCA_U32_HASH]) { | |
1228 | __u32 htid = rta_getattr_u32(tb[TCA_U32_HASH]); | |
1229 | ||
1230 | fprintf(f, "key ht %x bkt %x ", TC_U32_USERHTID(htid), | |
1231 | TC_U32_HASH(htid)); | |
1232 | } else { | |
1233 | fprintf(f, "??? "); | |
1234 | } | |
1235 | if (tb[TCA_U32_CLASSID]) { | |
1236 | SPRINT_BUF(b1); | |
1237 | fprintf(f, "%sflowid %s ", | |
1238 | !sel || !(sel->flags & TC_U32_TERMINAL) ? "*" : "", | |
1239 | sprint_tc_classid(rta_getattr_u32(tb[TCA_U32_CLASSID]), | |
1240 | b1)); | |
1241 | } else if (sel && sel->flags & TC_U32_TERMINAL) { | |
1242 | fprintf(f, "terminal flowid ??? "); | |
1243 | } | |
1244 | if (tb[TCA_U32_LINK]) { | |
1245 | SPRINT_BUF(b1); | |
1246 | fprintf(f, "link %s ", | |
1247 | sprint_u32_handle(rta_getattr_u32(tb[TCA_U32_LINK]), | |
1248 | b1)); | |
1249 | } | |
1250 | ||
1251 | if (tb[TCA_U32_FLAGS]) { | |
1252 | __u32 flags = rta_getattr_u32(tb[TCA_U32_FLAGS]); | |
1253 | ||
1254 | if (flags & TCA_CLS_FLAGS_SKIP_HW) | |
1255 | fprintf(f, "skip_hw "); | |
1256 | if (flags & TCA_CLS_FLAGS_SKIP_SW) | |
1257 | fprintf(f, "skip_sw "); | |
1258 | ||
1259 | if (flags & TCA_CLS_FLAGS_IN_HW) | |
1260 | fprintf(f, "in_hw "); | |
1261 | else if (flags & TCA_CLS_FLAGS_NOT_IN_HW) | |
1262 | fprintf(f, "not_in_hw "); | |
1263 | } | |
1264 | ||
1265 | if (tb[TCA_U32_PCNT]) { | |
1266 | if (RTA_PAYLOAD(tb[TCA_U32_PCNT]) < sizeof(*pf)) { | |
1267 | fprintf(f, "Broken perf counters\n"); | |
1268 | return -1; | |
1269 | } | |
1270 | pf = RTA_DATA(tb[TCA_U32_PCNT]); | |
1271 | } | |
1272 | ||
1273 | if (sel && show_stats && NULL != pf) | |
1274 | fprintf(f, " (rule hit %llu success %llu)", | |
1275 | (unsigned long long) pf->rcnt, | |
1276 | (unsigned long long) pf->rhit); | |
1277 | ||
1278 | if (tb[TCA_U32_MARK]) { | |
1279 | struct tc_u32_mark *mark = RTA_DATA(tb[TCA_U32_MARK]); | |
1280 | ||
1281 | if (RTA_PAYLOAD(tb[TCA_U32_MARK]) < sizeof(*mark)) { | |
1282 | fprintf(f, "\n Invalid mark (kernel&iproute2 mismatch)\n"); | |
1283 | } else { | |
1284 | fprintf(f, "\n mark 0x%04x 0x%04x (success %d)", | |
1285 | mark->val, mark->mask, mark->success); | |
1286 | } | |
1287 | } | |
1288 | ||
1289 | if (sel) { | |
1290 | if (sel->nkeys) { | |
1291 | int i; | |
1292 | ||
1293 | for (i = 0; i < sel->nkeys; i++) { | |
1294 | show_keys(f, sel->keys + i); | |
1295 | if (show_stats && NULL != pf) | |
1296 | fprintf(f, " (success %llu ) ", | |
1297 | (unsigned long long) pf->kcnts[i]); | |
1298 | } | |
1299 | } | |
1300 | ||
1301 | if (sel->flags & (TC_U32_VAROFFSET | TC_U32_OFFSET)) { | |
1302 | fprintf(f, "\n offset "); | |
1303 | if (sel->flags & TC_U32_VAROFFSET) | |
1304 | fprintf(f, "%04x>>%d at %d ", | |
1305 | ntohs(sel->offmask), | |
1306 | sel->offshift, sel->offoff); | |
1307 | if (sel->off) | |
1308 | fprintf(f, "plus %d ", sel->off); | |
1309 | } | |
1310 | if (sel->flags & TC_U32_EAT) | |
1311 | fprintf(f, " eat "); | |
1312 | ||
1313 | if (sel->hmask) { | |
1314 | fprintf(f, "\n hash mask %08x at %d ", | |
1315 | (unsigned int)htonl(sel->hmask), sel->hoff); | |
1316 | } | |
1317 | } | |
1318 | ||
1319 | if (tb[TCA_U32_POLICE]) { | |
1320 | fprintf(f, "\n"); | |
1321 | tc_print_police(f, tb[TCA_U32_POLICE]); | |
1322 | } | |
1323 | ||
1324 | if (tb[TCA_U32_INDEV]) { | |
1325 | struct rtattr *idev = tb[TCA_U32_INDEV]; | |
1326 | ||
1327 | fprintf(f, "\n input dev %s\n", rta_getattr_str(idev)); | |
1328 | } | |
1329 | ||
1330 | if (tb[TCA_U32_ACT]) | |
1331 | tc_print_action(f, tb[TCA_U32_ACT], 0); | |
1332 | ||
1333 | return 0; | |
1334 | } | |
1335 | ||
1336 | struct filter_util u32_filter_util = { | |
1337 | .id = "u32", | |
1338 | .parse_fopt = u32_parse_opt, | |
1339 | .print_fopt = u32_print_opt, | |
1340 | }; |