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aba5acdf SH |
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> | |
6f0ba88b | 10 | * Match mark added by Catalin(ux aka Dino) BOIE <catab at umbrella.ro> [5 nov 2004] |
aba5acdf SH |
11 | * |
12 | */ | |
13 | ||
14 | #include <stdio.h> | |
15 | #include <stdlib.h> | |
16 | #include <unistd.h> | |
17 | #include <syslog.h> | |
18 | #include <fcntl.h> | |
19 | #include <sys/socket.h> | |
20 | #include <netinet/in.h> | |
21 | #include <arpa/inet.h> | |
22 | #include <string.h> | |
2373fde9 | 23 | #include <linux/if.h> |
1750abe2 | 24 | #include <linux/if_ether.h> |
aba5acdf SH |
25 | |
26 | #include "utils.h" | |
27 | #include "tc_util.h" | |
28 | ||
44dcfe82 SH |
29 | extern int show_pretty; |
30 | ||
aba5acdf SH |
31 | static void explain(void) |
32 | { | |
62281205 SH |
33 | fprintf(stderr, |
34 | "Usage: ... u32 [ match SELECTOR ... ] [ link HTID ] [ classid CLASSID ]\n" | |
35 | " [ action ACTION_SPEC ] [ offset OFFSET_SPEC ]\n" | |
36 | " [ ht HTID ] [ hashkey HASHKEY_SPEC ]\n" | |
37 | " [ sample SAMPLE ] [skip-hw | skip-sw]\n" | |
38 | "or u32 divisor DIVISOR\n" | |
39 | "\n" | |
40 | "Where: SELECTOR := SAMPLE SAMPLE ...\n" | |
41 | " SAMPLE := { ip | ip6 | udp | tcp | icmp | u{32|16|8} | mark }\n" | |
42 | " SAMPLE_ARGS [ divisor DIVISOR ]\n" | |
43 | " FILTERID := X:Y:Z\n" | |
44 | "\nNOTE: CLASSID is parsed at hexadecimal input.\n"); | |
aba5acdf SH |
45 | } |
46 | ||
d1f28cf1 | 47 | static int get_u32_handle(__u32 *handle, const char *str) |
aba5acdf | 48 | { |
dd0c8d19 | 49 | __u32 htid = 0, hash = 0, nodeid = 0; |
aba5acdf SH |
50 | char *tmp = strchr(str, ':'); |
51 | ||
52 | if (tmp == NULL) { | |
53 | if (memcmp("0x", str, 2) == 0) | |
54 | return get_u32(handle, str, 16); | |
55 | return -1; | |
56 | } | |
57 | htid = strtoul(str, &tmp, 16); | |
58 | if (tmp == str && *str != ':' && *str != 0) | |
59 | return -1; | |
dd0c8d19 | 60 | if (htid >= 0x1000) |
aba5acdf SH |
61 | return -1; |
62 | if (*tmp) { | |
40eb737e | 63 | str = tmp + 1; |
aba5acdf SH |
64 | hash = strtoul(str, &tmp, 16); |
65 | if (tmp == str && *str != ':' && *str != 0) | |
66 | return -1; | |
dd0c8d19 | 67 | if (hash >= 0x100) |
aba5acdf SH |
68 | return -1; |
69 | if (*tmp) { | |
40eb737e | 70 | str = tmp + 1; |
aba5acdf SH |
71 | nodeid = strtoul(str, &tmp, 16); |
72 | if (tmp == str && *str != 0) | |
73 | return -1; | |
dd0c8d19 | 74 | if (nodeid >= 0x1000) |
aba5acdf SH |
75 | return -1; |
76 | } | |
77 | } | |
78 | *handle = (htid<<20)|(hash<<12)|nodeid; | |
79 | return 0; | |
80 | } | |
81 | ||
725f2a87 | 82 | static char *sprint_u32_handle(__u32 handle, char *buf) |
aba5acdf SH |
83 | { |
84 | int bsize = SPRINT_BSIZE-1; | |
85 | __u32 htid = TC_U32_HTID(handle); | |
86 | __u32 hash = TC_U32_HASH(handle); | |
87 | __u32 nodeid = TC_U32_NODE(handle); | |
88 | char *b = buf; | |
89 | ||
90 | if (handle == 0) { | |
91 | snprintf(b, bsize, "none"); | |
92 | return b; | |
93 | } | |
94 | if (htid) { | |
95 | int l = snprintf(b, bsize, "%x:", htid>>20); | |
32a121cb | 96 | |
aba5acdf SH |
97 | bsize -= l; |
98 | b += l; | |
99 | } | |
100 | if (nodeid|hash) { | |
101 | if (hash) { | |
102 | int l = snprintf(b, bsize, "%x", hash); | |
32a121cb | 103 | |
aba5acdf SH |
104 | bsize -= l; |
105 | b += l; | |
106 | } | |
107 | if (nodeid) { | |
108 | int l = snprintf(b, bsize, ":%x", nodeid); | |
32a121cb | 109 | |
aba5acdf SH |
110 | bsize -= l; |
111 | b += l; | |
112 | } | |
113 | } | |
114 | if (show_raw) | |
115 | snprintf(b, bsize, "[%08x] ", handle); | |
116 | return buf; | |
117 | } | |
118 | ||
e62077d0 SH |
119 | static int pack_key(struct tc_u32_sel *sel, __u32 key, __u32 mask, |
120 | int off, int offmask) | |
aba5acdf SH |
121 | { |
122 | int i; | |
123 | int hwm = sel->nkeys; | |
124 | ||
125 | key &= mask; | |
126 | ||
dd0c8d19 | 127 | for (i = 0; i < hwm; i++) { |
aba5acdf | 128 | if (sel->keys[i].off == off && sel->keys[i].offmask == offmask) { |
40eb737e | 129 | __u32 intersect = mask & sel->keys[i].mask; |
aba5acdf | 130 | |
40eb737e | 131 | if ((key ^ sel->keys[i].val) & intersect) |
aba5acdf SH |
132 | return -1; |
133 | sel->keys[i].val |= key; | |
134 | sel->keys[i].mask |= mask; | |
135 | return 0; | |
136 | } | |
137 | } | |
138 | ||
139 | if (hwm >= 128) | |
140 | return -1; | |
141 | if (off % 4) | |
142 | return -1; | |
143 | sel->keys[hwm].val = key; | |
144 | sel->keys[hwm].mask = mask; | |
145 | sel->keys[hwm].off = off; | |
146 | sel->keys[hwm].offmask = offmask; | |
147 | sel->nkeys++; | |
148 | return 0; | |
149 | } | |
150 | ||
e62077d0 SH |
151 | static int pack_key32(struct tc_u32_sel *sel, __u32 key, __u32 mask, |
152 | int off, int offmask) | |
aba5acdf SH |
153 | { |
154 | key = htonl(key); | |
155 | mask = htonl(mask); | |
156 | return pack_key(sel, key, mask, off, offmask); | |
157 | } | |
158 | ||
e62077d0 SH |
159 | static int pack_key16(struct tc_u32_sel *sel, __u32 key, __u32 mask, |
160 | int off, int offmask) | |
aba5acdf SH |
161 | { |
162 | if (key > 0xFFFF || mask > 0xFFFF) | |
163 | return -1; | |
164 | ||
165 | if ((off & 3) == 0) { | |
166 | key <<= 16; | |
167 | mask <<= 16; | |
168 | } | |
169 | off &= ~3; | |
170 | key = htonl(key); | |
171 | mask = htonl(mask); | |
172 | ||
173 | return pack_key(sel, key, mask, off, offmask); | |
174 | } | |
175 | ||
82e6efe2 JHS |
176 | static int pack_key8(struct tc_u32_sel *sel, __u32 key, __u32 mask, int off, |
177 | int offmask) | |
aba5acdf SH |
178 | { |
179 | if (key > 0xFF || mask > 0xFF) | |
180 | return -1; | |
181 | ||
182 | if ((off & 3) == 0) { | |
183 | key <<= 24; | |
184 | mask <<= 24; | |
185 | } else if ((off & 3) == 1) { | |
186 | key <<= 16; | |
187 | mask <<= 16; | |
188 | } else if ((off & 3) == 2) { | |
189 | key <<= 8; | |
190 | mask <<= 8; | |
191 | } | |
192 | off &= ~3; | |
193 | key = htonl(key); | |
194 | mask = htonl(mask); | |
195 | ||
196 | return pack_key(sel, key, mask, off, offmask); | |
197 | } | |
198 | ||
199 | ||
d1f28cf1 | 200 | static int parse_at(int *argc_p, char ***argv_p, int *off, int *offmask) |
aba5acdf SH |
201 | { |
202 | int argc = *argc_p; | |
203 | char **argv = *argv_p; | |
204 | char *p = *argv; | |
205 | ||
206 | if (argc <= 0) | |
207 | return -1; | |
208 | ||
209 | if (strlen(p) > strlen("nexthdr+") && | |
210 | memcmp(p, "nexthdr+", strlen("nexthdr+")) == 0) { | |
211 | *offmask = -1; | |
212 | p += strlen("nexthdr+"); | |
213 | } else if (matches(*argv, "nexthdr+") == 0) { | |
214 | NEXT_ARG(); | |
215 | *offmask = -1; | |
216 | p = *argv; | |
217 | } | |
218 | ||
219 | if (get_integer(off, p, 0)) | |
220 | return -1; | |
221 | argc--; argv++; | |
222 | ||
223 | *argc_p = argc; | |
224 | *argv_p = argv; | |
225 | return 0; | |
226 | } | |
227 | ||
228 | ||
e62077d0 SH |
229 | static int parse_u32(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, |
230 | int off, int offmask) | |
aba5acdf SH |
231 | { |
232 | int res = -1; | |
233 | int argc = *argc_p; | |
234 | char **argv = *argv_p; | |
235 | __u32 key; | |
236 | __u32 mask; | |
237 | ||
238 | if (argc < 2) | |
239 | return -1; | |
240 | ||
241 | if (get_u32(&key, *argv, 0)) | |
242 | return -1; | |
243 | argc--; argv++; | |
244 | ||
245 | if (get_u32(&mask, *argv, 16)) | |
246 | return -1; | |
247 | argc--; argv++; | |
248 | ||
249 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
250 | NEXT_ARG(); | |
251 | if (parse_at(&argc, &argv, &off, &offmask)) | |
252 | return -1; | |
253 | } | |
254 | ||
255 | res = pack_key32(sel, key, mask, off, offmask); | |
256 | *argc_p = argc; | |
257 | *argv_p = argv; | |
258 | return res; | |
259 | } | |
260 | ||
e62077d0 SH |
261 | static int parse_u16(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, |
262 | int off, int offmask) | |
aba5acdf SH |
263 | { |
264 | int res = -1; | |
265 | int argc = *argc_p; | |
266 | char **argv = *argv_p; | |
267 | __u32 key; | |
268 | __u32 mask; | |
269 | ||
270 | if (argc < 2) | |
271 | return -1; | |
272 | ||
273 | if (get_u32(&key, *argv, 0)) | |
274 | return -1; | |
275 | argc--; argv++; | |
276 | ||
277 | if (get_u32(&mask, *argv, 16)) | |
278 | return -1; | |
279 | argc--; argv++; | |
280 | ||
281 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
282 | NEXT_ARG(); | |
283 | if (parse_at(&argc, &argv, &off, &offmask)) | |
284 | return -1; | |
285 | } | |
286 | res = pack_key16(sel, key, mask, off, offmask); | |
287 | *argc_p = argc; | |
288 | *argv_p = argv; | |
289 | return res; | |
290 | } | |
291 | ||
e62077d0 SH |
292 | static int parse_u8(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, |
293 | int off, int offmask) | |
aba5acdf SH |
294 | { |
295 | int res = -1; | |
296 | int argc = *argc_p; | |
297 | char **argv = *argv_p; | |
298 | __u32 key; | |
299 | __u32 mask; | |
300 | ||
301 | if (argc < 2) | |
302 | return -1; | |
303 | ||
304 | if (get_u32(&key, *argv, 0)) | |
305 | return -1; | |
306 | argc--; argv++; | |
307 | ||
308 | if (get_u32(&mask, *argv, 16)) | |
309 | return -1; | |
310 | argc--; argv++; | |
311 | ||
312 | if (key > 0xFF || mask > 0xFF) | |
313 | return -1; | |
314 | ||
315 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
316 | NEXT_ARG(); | |
317 | if (parse_at(&argc, &argv, &off, &offmask)) | |
318 | return -1; | |
319 | } | |
320 | ||
321 | res = pack_key8(sel, key, mask, off, offmask); | |
322 | *argc_p = argc; | |
323 | *argv_p = argv; | |
324 | return res; | |
325 | } | |
326 | ||
e62077d0 SH |
327 | static int parse_ip_addr(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, |
328 | int off) | |
aba5acdf SH |
329 | { |
330 | int res = -1; | |
331 | int argc = *argc_p; | |
332 | char **argv = *argv_p; | |
333 | inet_prefix addr; | |
334 | __u32 mask; | |
335 | int offmask = 0; | |
336 | ||
337 | if (argc < 1) | |
338 | return -1; | |
339 | ||
340 | if (get_prefix_1(&addr, *argv, AF_INET)) | |
341 | return -1; | |
342 | argc--; argv++; | |
343 | ||
344 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
345 | NEXT_ARG(); | |
346 | if (parse_at(&argc, &argv, &off, &offmask)) | |
347 | return -1; | |
348 | } | |
349 | ||
350 | mask = 0; | |
351 | if (addr.bitlen) | |
40eb737e | 352 | mask = htonl(0xFFFFFFFF << (32 - addr.bitlen)); |
aba5acdf SH |
353 | if (pack_key(sel, addr.data[0], mask, off, offmask) < 0) |
354 | return -1; | |
355 | res = 0; | |
356 | ||
357 | *argc_p = argc; | |
358 | *argv_p = argv; | |
359 | return res; | |
360 | } | |
361 | ||
e62077d0 SH |
362 | static int parse_ip6_addr(int *argc_p, char ***argv_p, |
363 | struct tc_u32_sel *sel, int off) | |
aba5acdf SH |
364 | { |
365 | int res = -1; | |
366 | int argc = *argc_p; | |
367 | char **argv = *argv_p; | |
368 | int plen = 128; | |
369 | int i; | |
370 | inet_prefix addr; | |
371 | int offmask = 0; | |
372 | ||
373 | if (argc < 1) | |
374 | return -1; | |
375 | ||
376 | if (get_prefix_1(&addr, *argv, AF_INET6)) | |
377 | return -1; | |
378 | argc--; argv++; | |
379 | ||
380 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
381 | NEXT_ARG(); | |
382 | if (parse_at(&argc, &argv, &off, &offmask)) | |
383 | return -1; | |
384 | } | |
385 | ||
386 | plen = addr.bitlen; | |
40eb737e | 387 | for (i = 0; i < plen; i += 32) { |
725f2a87 | 388 | /* if (((i + 31) & ~0x1F) <= plen) { */ |
e62077d0 | 389 | if (i + 31 <= plen) { |
40eb737e PS |
390 | res = pack_key(sel, addr.data[i / 32], |
391 | 0xFFFFFFFF, off + 4 * (i / 32), offmask); | |
e62077d0 | 392 | if (res < 0) |
aba5acdf | 393 | return -1; |
e62077d0 | 394 | } else if (i < plen) { |
40eb737e | 395 | __u32 mask = htonl(0xFFFFFFFF << (32 - (plen - i))); |
32a121cb | 396 | |
40eb737e PS |
397 | res = pack_key(sel, addr.data[i / 32], |
398 | mask, off + 4 * (i / 32), offmask); | |
e62077d0 | 399 | if (res < 0) |
aba5acdf SH |
400 | return -1; |
401 | } | |
402 | } | |
403 | res = 0; | |
404 | ||
405 | *argc_p = argc; | |
406 | *argv_p = argv; | |
407 | return res; | |
408 | } | |
409 | ||
01564122 PL |
410 | static int parse_ip6_class(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) |
411 | { | |
412 | int res = -1; | |
413 | int argc = *argc_p; | |
414 | char **argv = *argv_p; | |
415 | __u32 key; | |
416 | __u32 mask; | |
417 | int off = 0; | |
418 | int offmask = 0; | |
419 | ||
420 | if (argc < 2) | |
421 | return -1; | |
422 | ||
423 | if (get_u32(&key, *argv, 0)) | |
424 | return -1; | |
425 | argc--; argv++; | |
426 | ||
427 | if (get_u32(&mask, *argv, 16)) | |
428 | return -1; | |
429 | argc--; argv++; | |
430 | ||
431 | if (key > 0xFF || mask > 0xFF) | |
432 | return -1; | |
433 | ||
434 | key <<= 20; | |
435 | mask <<= 20; | |
436 | key = htonl(key); | |
437 | mask = htonl(mask); | |
438 | ||
d7ac9ad4 SH |
439 | res = pack_key(sel, key, mask, off, offmask); |
440 | if (res < 0) | |
01564122 PL |
441 | return -1; |
442 | ||
443 | *argc_p = argc; | |
444 | *argv_p = argv; | |
445 | return 0; | |
446 | } | |
447 | ||
b4d41f41 SH |
448 | static int parse_ether_addr(int *argc_p, char ***argv_p, |
449 | struct tc_u32_sel *sel, int off) | |
450 | { | |
451 | int res = -1; | |
452 | int argc = *argc_p; | |
453 | char **argv = *argv_p; | |
454 | __u8 addr[6]; | |
455 | int offmask = 0; | |
b4d41f41 SH |
456 | int i; |
457 | ||
458 | if (argc < 1) | |
459 | return -1; | |
460 | ||
461 | if (sscanf(*argv, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", | |
462 | addr + 0, addr + 1, addr + 2, | |
463 | addr + 3, addr + 4, addr + 5) != 6) { | |
464 | fprintf(stderr, "parse_ether_addr: improperly formed address '%s'\n", | |
465 | *argv); | |
466 | return -1; | |
467 | } | |
468 | ||
469 | argc--; argv++; | |
470 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
471 | NEXT_ARG(); | |
472 | if (parse_at(&argc, &argv, &off, &offmask)) | |
473 | return -1; | |
474 | } | |
475 | ||
e3d153c1 SH |
476 | for (i = 0; i < 6; i++) { |
477 | res = pack_key8(sel, addr[i], 0xFF, off + i, offmask); | |
b4d41f41 SH |
478 | if (res < 0) |
479 | return -1; | |
480 | } | |
481 | ||
482 | *argc_p = argc; | |
483 | *argv_p = argv; | |
484 | return res; | |
485 | } | |
486 | ||
aba5acdf SH |
487 | static int parse_ip(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) |
488 | { | |
489 | int res = -1; | |
490 | int argc = *argc_p; | |
491 | char **argv = *argv_p; | |
492 | ||
493 | if (argc < 2) | |
494 | return -1; | |
495 | ||
496 | if (strcmp(*argv, "src") == 0) { | |
497 | NEXT_ARG(); | |
498 | res = parse_ip_addr(&argc, &argv, sel, 12); | |
9fce67dd | 499 | } else if (strcmp(*argv, "dst") == 0) { |
aba5acdf SH |
500 | NEXT_ARG(); |
501 | res = parse_ip_addr(&argc, &argv, sel, 16); | |
9fce67dd | 502 | } else if (strcmp(*argv, "tos") == 0 || |
40eb737e PS |
503 | matches(*argv, "dsfield") == 0 || |
504 | matches(*argv, "precedence") == 0) { | |
aba5acdf SH |
505 | NEXT_ARG(); |
506 | res = parse_u8(&argc, &argv, sel, 1, 0); | |
9fce67dd | 507 | } else if (strcmp(*argv, "ihl") == 0) { |
aba5acdf SH |
508 | NEXT_ARG(); |
509 | res = parse_u8(&argc, &argv, sel, 0, 0); | |
9fce67dd | 510 | } else if (strcmp(*argv, "protocol") == 0) { |
aba5acdf SH |
511 | NEXT_ARG(); |
512 | res = parse_u8(&argc, &argv, sel, 9, 0); | |
9fce67dd | 513 | } else if (strcmp(*argv, "nofrag") == 0) { |
aba5acdf SH |
514 | argc--; argv++; |
515 | res = pack_key16(sel, 0, 0x3FFF, 6, 0); | |
9fce67dd | 516 | } else if (strcmp(*argv, "firstfrag") == 0) { |
aba5acdf | 517 | argc--; argv++; |
690b11f4 | 518 | res = pack_key16(sel, 0x2000, 0x3FFF, 6, 0); |
9fce67dd | 519 | } else if (strcmp(*argv, "df") == 0) { |
aba5acdf SH |
520 | argc--; argv++; |
521 | res = pack_key16(sel, 0x4000, 0x4000, 6, 0); | |
9fce67dd | 522 | } else if (strcmp(*argv, "mf") == 0) { |
aba5acdf SH |
523 | argc--; argv++; |
524 | res = pack_key16(sel, 0x2000, 0x2000, 6, 0); | |
9fce67dd | 525 | } else if (strcmp(*argv, "dport") == 0) { |
aba5acdf SH |
526 | NEXT_ARG(); |
527 | res = parse_u16(&argc, &argv, sel, 22, 0); | |
9fce67dd | 528 | } else if (strcmp(*argv, "sport") == 0) { |
aba5acdf SH |
529 | NEXT_ARG(); |
530 | res = parse_u16(&argc, &argv, sel, 20, 0); | |
9fce67dd | 531 | } else if (strcmp(*argv, "icmp_type") == 0) { |
aba5acdf SH |
532 | NEXT_ARG(); |
533 | res = parse_u8(&argc, &argv, sel, 20, 0); | |
9fce67dd | 534 | } else if (strcmp(*argv, "icmp_code") == 0) { |
aba5acdf | 535 | NEXT_ARG(); |
1d62f99f | 536 | res = parse_u8(&argc, &argv, sel, 21, 0); |
9fce67dd SH |
537 | } else |
538 | return -1; | |
aba5acdf | 539 | |
aba5acdf SH |
540 | *argc_p = argc; |
541 | *argv_p = argv; | |
542 | return res; | |
543 | } | |
3d0b7439 | 544 | |
aba5acdf SH |
545 | static int parse_ip6(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) |
546 | { | |
547 | int res = -1; | |
548 | int argc = *argc_p; | |
549 | char **argv = *argv_p; | |
550 | ||
551 | if (argc < 2) | |
552 | return -1; | |
553 | ||
554 | if (strcmp(*argv, "src") == 0) { | |
555 | NEXT_ARG(); | |
556 | res = parse_ip6_addr(&argc, &argv, sel, 8); | |
9fce67dd | 557 | } else if (strcmp(*argv, "dst") == 0) { |
aba5acdf SH |
558 | NEXT_ARG(); |
559 | res = parse_ip6_addr(&argc, &argv, sel, 24); | |
9fce67dd | 560 | } else if (strcmp(*argv, "priority") == 0) { |
aba5acdf | 561 | NEXT_ARG(); |
01564122 | 562 | res = parse_ip6_class(&argc, &argv, sel); |
9fce67dd | 563 | } else if (strcmp(*argv, "protocol") == 0) { |
aba5acdf SH |
564 | NEXT_ARG(); |
565 | res = parse_u8(&argc, &argv, sel, 6, 0); | |
9fce67dd | 566 | } else if (strcmp(*argv, "flowlabel") == 0) { |
aba5acdf SH |
567 | NEXT_ARG(); |
568 | res = parse_u32(&argc, &argv, sel, 0, 0); | |
9fce67dd | 569 | } else if (strcmp(*argv, "dport") == 0) { |
aba5acdf SH |
570 | NEXT_ARG(); |
571 | res = parse_u16(&argc, &argv, sel, 42, 0); | |
9fce67dd | 572 | } else if (strcmp(*argv, "sport") == 0) { |
aba5acdf SH |
573 | NEXT_ARG(); |
574 | res = parse_u16(&argc, &argv, sel, 40, 0); | |
9fce67dd | 575 | } else if (strcmp(*argv, "icmp_type") == 0) { |
aba5acdf SH |
576 | NEXT_ARG(); |
577 | res = parse_u8(&argc, &argv, sel, 40, 0); | |
9fce67dd | 578 | } else if (strcmp(*argv, "icmp_code") == 0) { |
aba5acdf SH |
579 | NEXT_ARG(); |
580 | res = parse_u8(&argc, &argv, sel, 41, 1); | |
9fce67dd SH |
581 | } else |
582 | return -1; | |
aba5acdf | 583 | |
aba5acdf SH |
584 | *argc_p = argc; |
585 | *argv_p = argv; | |
586 | return res; | |
587 | } | |
588 | ||
b4d41f41 SH |
589 | static int parse_ether(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) |
590 | { | |
591 | int res = -1; | |
592 | int argc = *argc_p; | |
593 | char **argv = *argv_p; | |
594 | ||
595 | if (argc < 2) | |
596 | return -1; | |
597 | ||
598 | if (strcmp(*argv, "src") == 0) { | |
599 | NEXT_ARG(); | |
600 | res = parse_ether_addr(&argc, &argv, sel, -8); | |
601 | } else if (strcmp(*argv, "dst") == 0) { | |
602 | NEXT_ARG(); | |
603 | res = parse_ether_addr(&argc, &argv, sel, -14); | |
604 | } else { | |
605 | fprintf(stderr, "Unknown match: ether %s\n", *argv); | |
606 | return -1; | |
607 | } | |
608 | ||
609 | *argc_p = argc; | |
610 | *argv_p = argv; | |
611 | return res; | |
612 | } | |
613 | ||
aba5acdf SH |
614 | #define parse_tcp parse_udp |
615 | static int parse_udp(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
616 | { | |
617 | int res = -1; | |
618 | int argc = *argc_p; | |
619 | char **argv = *argv_p; | |
620 | ||
621 | if (argc < 2) | |
622 | return -1; | |
623 | ||
624 | if (strcmp(*argv, "src") == 0) { | |
625 | NEXT_ARG(); | |
626 | res = parse_u16(&argc, &argv, sel, 0, -1); | |
9fce67dd | 627 | } else if (strcmp(*argv, "dst") == 0) { |
aba5acdf SH |
628 | NEXT_ARG(); |
629 | res = parse_u16(&argc, &argv, sel, 2, -1); | |
9fce67dd SH |
630 | } else |
631 | return -1; | |
aba5acdf | 632 | |
aba5acdf SH |
633 | *argc_p = argc; |
634 | *argv_p = argv; | |
635 | return res; | |
636 | } | |
637 | ||
6b1ac654 | 638 | |
aba5acdf SH |
639 | static int parse_icmp(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) |
640 | { | |
641 | int res = -1; | |
642 | int argc = *argc_p; | |
643 | char **argv = *argv_p; | |
644 | ||
645 | if (argc < 2) | |
646 | return -1; | |
647 | ||
648 | if (strcmp(*argv, "type") == 0) { | |
649 | NEXT_ARG(); | |
650 | res = parse_u8(&argc, &argv, sel, 0, -1); | |
9fce67dd | 651 | } else if (strcmp(*argv, "code") == 0) { |
aba5acdf SH |
652 | NEXT_ARG(); |
653 | res = parse_u8(&argc, &argv, sel, 1, -1); | |
9fce67dd SH |
654 | } else |
655 | return -1; | |
aba5acdf | 656 | |
aba5acdf SH |
657 | *argc_p = argc; |
658 | *argv_p = argv; | |
659 | return res; | |
660 | } | |
661 | ||
6f0ba88b | 662 | static int parse_mark(int *argc_p, char ***argv_p, struct nlmsghdr *n) |
663 | { | |
664 | int res = -1; | |
665 | int argc = *argc_p; | |
666 | char **argv = *argv_p; | |
667 | struct tc_u32_mark mark; | |
668 | ||
669 | if (argc <= 1) | |
670 | return -1; | |
671 | ||
672 | if (get_u32(&mark.val, *argv, 0)) { | |
673 | fprintf(stderr, "Illegal \"mark\" value\n"); | |
674 | return -1; | |
675 | } | |
676 | NEXT_ARG(); | |
677 | ||
678 | if (get_u32(&mark.mask, *argv, 0)) { | |
679 | fprintf(stderr, "Illegal \"mark\" mask\n"); | |
680 | return -1; | |
681 | } | |
682 | NEXT_ARG(); | |
683 | ||
684 | if ((mark.val & mark.mask) != mark.val) { | |
685 | fprintf(stderr, "Illegal \"mark\" (impossible combination)\n"); | |
686 | return -1; | |
687 | } | |
aba5acdf | 688 | |
6f0ba88b | 689 | addattr_l(n, MAX_MSG, TCA_U32_MARK, &mark, sizeof(mark)); |
690 | res = 0; | |
691 | ||
692 | *argc_p = argc; | |
693 | *argv_p = argv; | |
694 | return res; | |
695 | } | |
aba5acdf | 696 | |
e62077d0 SH |
697 | static int parse_selector(int *argc_p, char ***argv_p, |
698 | struct tc_u32_sel *sel, struct nlmsghdr *n) | |
aba5acdf SH |
699 | { |
700 | int argc = *argc_p; | |
701 | char **argv = *argv_p; | |
702 | int res = -1; | |
703 | ||
704 | if (argc <= 0) | |
705 | return -1; | |
706 | ||
707 | if (matches(*argv, "u32") == 0) { | |
708 | NEXT_ARG(); | |
709 | res = parse_u32(&argc, &argv, sel, 0, 0); | |
9fce67dd | 710 | } else if (matches(*argv, "u16") == 0) { |
aba5acdf SH |
711 | NEXT_ARG(); |
712 | res = parse_u16(&argc, &argv, sel, 0, 0); | |
9fce67dd | 713 | } else if (matches(*argv, "u8") == 0) { |
aba5acdf SH |
714 | NEXT_ARG(); |
715 | res = parse_u8(&argc, &argv, sel, 0, 0); | |
9fce67dd | 716 | } else if (matches(*argv, "ip") == 0) { |
aba5acdf SH |
717 | NEXT_ARG(); |
718 | res = parse_ip(&argc, &argv, sel); | |
32a121cb | 719 | } else if (matches(*argv, "ip6") == 0) { |
aba5acdf SH |
720 | NEXT_ARG(); |
721 | res = parse_ip6(&argc, &argv, sel); | |
9fce67dd | 722 | } else if (matches(*argv, "udp") == 0) { |
aba5acdf SH |
723 | NEXT_ARG(); |
724 | res = parse_udp(&argc, &argv, sel); | |
9fce67dd | 725 | } else if (matches(*argv, "tcp") == 0) { |
aba5acdf SH |
726 | NEXT_ARG(); |
727 | res = parse_tcp(&argc, &argv, sel); | |
9fce67dd | 728 | } else if (matches(*argv, "icmp") == 0) { |
aba5acdf SH |
729 | NEXT_ARG(); |
730 | res = parse_icmp(&argc, &argv, sel); | |
9fce67dd | 731 | } else if (matches(*argv, "mark") == 0) { |
6f0ba88b | 732 | NEXT_ARG(); |
733 | res = parse_mark(&argc, &argv, n); | |
b4d41f41 SH |
734 | } else if (matches(*argv, "ether") == 0) { |
735 | NEXT_ARG(); | |
736 | res = parse_ether(&argc, &argv, sel); | |
3d0b7439 | 737 | } else |
9fce67dd | 738 | return -1; |
aba5acdf | 739 | |
aba5acdf SH |
740 | *argc_p = argc; |
741 | *argv_p = argv; | |
742 | return res; | |
743 | } | |
744 | ||
745 | static int parse_offset(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
746 | { | |
747 | int argc = *argc_p; | |
748 | char **argv = *argv_p; | |
749 | ||
750 | while (argc > 0) { | |
751 | if (matches(*argv, "plus") == 0) { | |
752 | int off; | |
32a121cb | 753 | |
aba5acdf SH |
754 | NEXT_ARG(); |
755 | if (get_integer(&off, *argv, 0)) | |
756 | return -1; | |
757 | sel->off = off; | |
758 | sel->flags |= TC_U32_OFFSET; | |
759 | } else if (matches(*argv, "at") == 0) { | |
760 | int off; | |
32a121cb | 761 | |
aba5acdf SH |
762 | NEXT_ARG(); |
763 | if (get_integer(&off, *argv, 0)) | |
764 | return -1; | |
765 | sel->offoff = off; | |
766 | if (off%2) { | |
767 | fprintf(stderr, "offset \"at\" must be even\n"); | |
768 | return -1; | |
769 | } | |
770 | sel->flags |= TC_U32_VAROFFSET; | |
771 | } else if (matches(*argv, "mask") == 0) { | |
aba5acdf | 772 | NEXT_ARG(); |
9f7401fa | 773 | if (get_be16(&sel->offmask, *argv, 16)) |
aba5acdf | 774 | return -1; |
aba5acdf SH |
775 | sel->flags |= TC_U32_VAROFFSET; |
776 | } else if (matches(*argv, "shift") == 0) { | |
777 | int shift; | |
32a121cb | 778 | |
aba5acdf SH |
779 | NEXT_ARG(); |
780 | if (get_integer(&shift, *argv, 0)) | |
781 | return -1; | |
782 | sel->offshift = shift; | |
783 | sel->flags |= TC_U32_VAROFFSET; | |
784 | } else if (matches(*argv, "eat") == 0) { | |
785 | sel->flags |= TC_U32_EAT; | |
786 | } else { | |
787 | break; | |
788 | } | |
789 | argc--; argv++; | |
790 | } | |
791 | ||
792 | *argc_p = argc; | |
793 | *argv_p = argv; | |
794 | return 0; | |
795 | } | |
796 | ||
797 | static int parse_hashkey(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
798 | { | |
799 | int argc = *argc_p; | |
800 | char **argv = *argv_p; | |
801 | ||
802 | while (argc > 0) { | |
803 | if (matches(*argv, "mask") == 0) { | |
aba5acdf | 804 | NEXT_ARG(); |
9f7401fa | 805 | if (get_be32(&sel->hmask, *argv, 16)) |
aba5acdf | 806 | return -1; |
aba5acdf SH |
807 | } else if (matches(*argv, "at") == 0) { |
808 | int num; | |
32a121cb | 809 | |
aba5acdf SH |
810 | NEXT_ARG(); |
811 | if (get_integer(&num, *argv, 0)) | |
812 | return -1; | |
813 | if (num%4) | |
814 | return -1; | |
815 | sel->hoff = num; | |
816 | } else { | |
817 | break; | |
818 | } | |
819 | argc--; argv++; | |
820 | } | |
821 | ||
822 | *argc_p = argc; | |
823 | *argv_p = argv; | |
824 | return 0; | |
825 | } | |
826 | ||
1750abe2 | 827 | static void print_ipv4(FILE *f, const struct tc_u32_key *key) |
6b1ac654 SH |
828 | { |
829 | char abuf[256]; | |
830 | ||
6b1ac654 | 831 | switch (key->off) { |
4c9ffc2f SH |
832 | case 0: |
833 | switch (ntohl(key->mask)) { | |
834 | case 0x0f000000: | |
82e6efe2 JHS |
835 | fprintf(f, "\n match IP ihl %u", |
836 | ntohl(key->val) >> 24); | |
4c9ffc2f SH |
837 | return; |
838 | case 0x00ff0000: | |
82e6efe2 JHS |
839 | fprintf(f, "\n match IP dsfield %#x", |
840 | ntohl(key->val) >> 16); | |
4c9ffc2f SH |
841 | return; |
842 | } | |
843 | break; | |
844 | case 8: | |
845 | if (ntohl(key->mask) == 0x00ff0000) { | |
82e6efe2 JHS |
846 | fprintf(f, "\n match IP protocol %d", |
847 | ntohl(key->val) >> 16); | |
4c9ffc2f SH |
848 | return; |
849 | } | |
850 | break; | |
6b1ac654 SH |
851 | case 12: |
852 | case 16: { | |
853 | int bits = mask2bits(key->mask); | |
32a121cb | 854 | |
6b1ac654 | 855 | if (bits >= 0) { |
3d0b7439 | 856 | fprintf(f, "\n %s %s/%d", |
1750abe2 | 857 | key->off == 12 ? "match IP src" : "match IP dst", |
e62077d0 SH |
858 | inet_ntop(AF_INET, &key->val, |
859 | abuf, sizeof(abuf)), | |
6b1ac654 SH |
860 | bits); |
861 | return; | |
862 | } | |
863 | } | |
864 | break; | |
865 | ||
866 | case 20: | |
4c9ffc2f SH |
867 | switch (ntohl(key->mask)) { |
868 | case 0x0000ffff: | |
bcd7abdd | 869 | fprintf(f, "\n match dport %u", |
4c9ffc2f SH |
870 | ntohl(key->val) & 0xffff); |
871 | return; | |
872 | case 0xffff0000: | |
bcd7abdd | 873 | fprintf(f, "\n match sport %u", |
4c9ffc2f SH |
874 | ntohl(key->val) >> 16); |
875 | return; | |
876 | case 0xffffffff: | |
bcd7abdd | 877 | fprintf(f, "\n match dport %u, match sport %u", |
4c9ffc2f SH |
878 | ntohl(key->val) & 0xffff, |
879 | ntohl(key->val) >> 16); | |
880 | ||
6b1ac654 SH |
881 | return; |
882 | } | |
1750abe2 | 883 | /* XXX: Default print_raw */ |
6b1ac654 | 884 | } |
1750abe2 | 885 | } |
6b1ac654 | 886 | |
d13cee6d SH |
887 | static void print_ipv6(FILE *f, const struct tc_u32_key *key) |
888 | { | |
889 | char abuf[256]; | |
890 | ||
891 | switch (key->off) { | |
892 | case 0: | |
893 | switch (ntohl(key->mask)) { | |
894 | case 0x0f000000: | |
82e6efe2 JHS |
895 | fprintf(f, "\n match IP ihl %u", |
896 | ntohl(key->val) >> 24); | |
d13cee6d SH |
897 | return; |
898 | case 0x00ff0000: | |
82e6efe2 JHS |
899 | fprintf(f, "\n match IP dsfield %#x", |
900 | ntohl(key->val) >> 16); | |
d13cee6d SH |
901 | return; |
902 | } | |
903 | break; | |
904 | case 8: | |
905 | if (ntohl(key->mask) == 0x00ff0000) { | |
82e6efe2 JHS |
906 | fprintf(f, "\n match IP protocol %d", |
907 | ntohl(key->val) >> 16); | |
d13cee6d SH |
908 | return; |
909 | } | |
910 | break; | |
911 | case 12: | |
912 | case 16: { | |
913 | int bits = mask2bits(key->mask); | |
32a121cb | 914 | |
d13cee6d | 915 | if (bits >= 0) { |
3d0b7439 | 916 | fprintf(f, "\n %s %s/%d", |
d13cee6d SH |
917 | key->off == 12 ? "match IP src" : "match IP dst", |
918 | inet_ntop(AF_INET, &key->val, | |
919 | abuf, sizeof(abuf)), | |
920 | bits); | |
921 | return; | |
922 | } | |
923 | } | |
924 | break; | |
925 | ||
926 | case 20: | |
927 | switch (ntohl(key->mask)) { | |
928 | case 0x0000ffff: | |
929 | fprintf(f, "\n match sport %u", | |
930 | ntohl(key->val) & 0xffff); | |
931 | return; | |
932 | case 0xffff0000: | |
933 | fprintf(f, "\n match dport %u", | |
934 | ntohl(key->val) >> 16); | |
935 | return; | |
936 | case 0xffffffff: | |
937 | fprintf(f, "\n match sport %u, match dport %u", | |
938 | ntohl(key->val) & 0xffff, | |
939 | ntohl(key->val) >> 16); | |
940 | ||
941 | return; | |
942 | } | |
943 | /* XXX: Default print_raw */ | |
944 | } | |
945 | } | |
946 | ||
1750abe2 | 947 | static void print_raw(FILE *f, const struct tc_u32_key *key) |
948 | { | |
3d0b7439 | 949 | fprintf(f, "\n match %08x/%08x at %s%d", |
6b1ac654 SH |
950 | (unsigned int)ntohl(key->val), |
951 | (unsigned int)ntohl(key->mask), | |
952 | key->offmask ? "nexthdr+" : "", | |
953 | key->off); | |
954 | } | |
955 | ||
1750abe2 | 956 | static const struct { |
957 | __u16 proto; | |
958 | __u16 pad; | |
959 | void (*pprinter)(FILE *f, const struct tc_u32_key *key); | |
960 | } u32_pprinters[] = { | |
32a121cb | 961 | {0, 0, print_raw}, |
1750abe2 | 962 | {ETH_P_IP, 0, print_ipv4}, |
d13cee6d | 963 | {ETH_P_IPV6, 0, print_ipv6}, |
1750abe2 | 964 | }; |
965 | ||
966 | static void show_keys(FILE *f, const struct tc_u32_key *key) | |
967 | { | |
968 | int i = 0; | |
969 | ||
970 | if (!show_pretty) | |
971 | goto show_k; | |
972 | ||
32a121cb | 973 | for (i = 0; i < ARRAY_SIZE(u32_pprinters); i++) { |
1750abe2 | 974 | if (u32_pprinters[i].proto == ntohs(f_proto)) { |
975 | show_k: | |
976 | u32_pprinters[i].pprinter(f, key); | |
977 | return; | |
978 | } | |
979 | } | |
980 | ||
981 | i = 0; | |
982 | goto show_k; | |
983 | } | |
984 | ||
985 | static int u32_parse_opt(struct filter_util *qu, char *handle, | |
6b1ac654 | 986 | int argc, char **argv, struct nlmsghdr *n) |
aba5acdf SH |
987 | { |
988 | struct { | |
989 | struct tc_u32_sel sel; | |
990 | struct tc_u32_key keys[128]; | |
d17b136f | 991 | } sel = {}; |
aba5acdf SH |
992 | struct tcmsg *t = NLMSG_DATA(n); |
993 | struct rtattr *tail; | |
dcf13497 | 994 | int sel_ok = 0, terminal_ok = 0; |
aba5acdf SH |
995 | int sample_ok = 0; |
996 | __u32 htid = 0; | |
997 | __u32 order = 0; | |
5e5b3008 | 998 | __u32 flags = 0; |
aba5acdf | 999 | |
aba5acdf SH |
1000 | if (handle && get_u32_handle(&t->tcm_handle, handle)) { |
1001 | fprintf(stderr, "Illegal filter ID\n"); | |
1002 | return -1; | |
1003 | } | |
1004 | ||
1005 | if (argc == 0) | |
1006 | return 0; | |
1007 | ||
4a86fe19 | 1008 | tail = NLMSG_TAIL(n); |
2373fde9 | 1009 | addattr_l(n, MAX_MSG, TCA_OPTIONS, NULL, 0); |
aba5acdf SH |
1010 | |
1011 | while (argc > 0) { | |
1012 | if (matches(*argv, "match") == 0) { | |
1013 | NEXT_ARG(); | |
6f0ba88b | 1014 | if (parse_selector(&argc, &argv, &sel.sel, n)) { |
aba5acdf SH |
1015 | fprintf(stderr, "Illegal \"match\"\n"); |
1016 | return -1; | |
1017 | } | |
1018 | sel_ok++; | |
1019 | continue; | |
1020 | } else if (matches(*argv, "offset") == 0) { | |
1021 | NEXT_ARG(); | |
1022 | if (parse_offset(&argc, &argv, &sel.sel)) { | |
1023 | fprintf(stderr, "Illegal \"offset\"\n"); | |
1024 | return -1; | |
1025 | } | |
1026 | continue; | |
1027 | } else if (matches(*argv, "hashkey") == 0) { | |
1028 | NEXT_ARG(); | |
1029 | if (parse_hashkey(&argc, &argv, &sel.sel)) { | |
1030 | fprintf(stderr, "Illegal \"hashkey\"\n"); | |
1031 | return -1; | |
1032 | } | |
1033 | continue; | |
1034 | } else if (matches(*argv, "classid") == 0 || | |
1035 | strcmp(*argv, "flowid") == 0) { | |
82e6efe2 | 1036 | unsigned int flowid; |
32a121cb | 1037 | |
aba5acdf | 1038 | NEXT_ARG(); |
82e6efe2 | 1039 | if (get_tc_classid(&flowid, *argv)) { |
aba5acdf SH |
1040 | fprintf(stderr, "Illegal \"classid\"\n"); |
1041 | return -1; | |
1042 | } | |
82e6efe2 | 1043 | addattr_l(n, MAX_MSG, TCA_U32_CLASSID, &flowid, 4); |
aba5acdf SH |
1044 | sel.sel.flags |= TC_U32_TERMINAL; |
1045 | } else if (matches(*argv, "divisor") == 0) { | |
32a121cb SH |
1046 | unsigned int divisor; |
1047 | ||
aba5acdf | 1048 | NEXT_ARG(); |
ae665a52 | 1049 | if (get_unsigned(&divisor, *argv, 0) || |
46b67dab SH |
1050 | divisor == 0 || |
1051 | divisor > 0x100 || ((divisor - 1) & divisor)) { | |
aba5acdf SH |
1052 | fprintf(stderr, "Illegal \"divisor\"\n"); |
1053 | return -1; | |
1054 | } | |
2373fde9 | 1055 | addattr_l(n, MAX_MSG, TCA_U32_DIVISOR, &divisor, 4); |
aba5acdf SH |
1056 | } else if (matches(*argv, "order") == 0) { |
1057 | NEXT_ARG(); | |
1058 | if (get_u32(&order, *argv, 0)) { | |
1059 | fprintf(stderr, "Illegal \"order\"\n"); | |
1060 | return -1; | |
1061 | } | |
1062 | } else if (strcmp(*argv, "link") == 0) { | |
82e6efe2 | 1063 | unsigned int linkid; |
32a121cb | 1064 | |
aba5acdf | 1065 | NEXT_ARG(); |
82e6efe2 | 1066 | if (get_u32_handle(&linkid, *argv)) { |
aba5acdf SH |
1067 | fprintf(stderr, "Illegal \"link\"\n"); |
1068 | return -1; | |
1069 | } | |
82e6efe2 | 1070 | if (linkid && TC_U32_NODE(linkid)) { |
aba5acdf SH |
1071 | fprintf(stderr, "\"link\" must be a hash table.\n"); |
1072 | return -1; | |
1073 | } | |
2373fde9 | 1074 | addattr_l(n, MAX_MSG, TCA_U32_LINK, &handle, 4); |
aba5acdf | 1075 | } else if (strcmp(*argv, "ht") == 0) { |
82e6efe2 | 1076 | unsigned int ht; |
32a121cb | 1077 | |
aba5acdf | 1078 | NEXT_ARG(); |
82e6efe2 | 1079 | if (get_u32_handle(&ht, *argv)) { |
aba5acdf SH |
1080 | fprintf(stderr, "Illegal \"ht\"\n"); |
1081 | return -1; | |
1082 | } | |
82e6efe2 | 1083 | if (handle && TC_U32_NODE(ht)) { |
aba5acdf SH |
1084 | fprintf(stderr, "\"ht\" must be a hash table.\n"); |
1085 | return -1; | |
1086 | } | |
1087 | if (sample_ok) | |
82e6efe2 | 1088 | htid = (htid & 0xFF000) | (ht & 0xFFF00000); |
aba5acdf | 1089 | else |
82e6efe2 | 1090 | htid = (ht & 0xFFFFF000); |
aba5acdf SH |
1091 | } else if (strcmp(*argv, "sample") == 0) { |
1092 | __u32 hash; | |
32a121cb | 1093 | unsigned int divisor = 0x100; |
aba5acdf SH |
1094 | struct { |
1095 | struct tc_u32_sel sel; | |
1096 | struct tc_u32_key keys[4]; | |
d17b136f PS |
1097 | } sel2 = {}; |
1098 | ||
aba5acdf | 1099 | NEXT_ARG(); |
6f0ba88b | 1100 | if (parse_selector(&argc, &argv, &sel2.sel, n)) { |
aba5acdf SH |
1101 | fprintf(stderr, "Illegal \"sample\"\n"); |
1102 | return -1; | |
1103 | } | |
1104 | if (sel2.sel.nkeys != 1) { | |
32a121cb | 1105 | fprintf(stderr, "\"sample\" must contain exactly ONE key.\n"); |
aba5acdf SH |
1106 | return -1; |
1107 | } | |
3925ad81 SH |
1108 | if (*argv != 0 && strcmp(*argv, "divisor") == 0) { |
1109 | NEXT_ARG(); | |
82e6efe2 JHS |
1110 | if (get_unsigned(&divisor, *argv, 0) || |
1111 | divisor == 0 || divisor > 0x100 || | |
1112 | ((divisor - 1) & divisor)) { | |
3925ad81 SH |
1113 | fprintf(stderr, "Illegal sample \"divisor\"\n"); |
1114 | return -1; | |
1115 | } | |
1116 | NEXT_ARG(); | |
1117 | } | |
40eb737e PS |
1118 | hash = sel2.sel.keys[0].val & sel2.sel.keys[0].mask; |
1119 | hash ^= hash >> 16; | |
1120 | hash ^= hash >> 8; | |
1121 | htid = ((hash % divisor) << 12) | (htid & 0xFFF00000); | |
aba5acdf SH |
1122 | sample_ok = 1; |
1123 | continue; | |
2373fde9 | 1124 | } else if (strcmp(*argv, "indev") == 0) { |
d17b136f | 1125 | char ind[IFNAMSIZ + 1] = {}; |
32a121cb | 1126 | |
2373fde9 SH |
1127 | argc--; |
1128 | argv++; | |
1129 | if (argc < 1) { | |
1130 | fprintf(stderr, "Illegal indev\n"); | |
1131 | return -1; | |
1132 | } | |
725f2a87 | 1133 | strncpy(ind, *argv, sizeof(ind) - 1); |
82e6efe2 JHS |
1134 | addattr_l(n, MAX_MSG, TCA_U32_INDEV, ind, |
1135 | strlen(ind) + 1); | |
d81b135b | 1136 | |
2373fde9 SH |
1137 | } else if (matches(*argv, "action") == 0) { |
1138 | NEXT_ARG(); | |
1139 | if (parse_action(&argc, &argv, TCA_U32_ACT, n)) { | |
1140 | fprintf(stderr, "Illegal \"action\"\n"); | |
1141 | return -1; | |
1142 | } | |
dcf13497 | 1143 | terminal_ok++; |
2373fde9 | 1144 | continue; |
d81b135b | 1145 | |
aba5acdf SH |
1146 | } else if (matches(*argv, "police") == 0) { |
1147 | NEXT_ARG(); | |
1148 | if (parse_police(&argc, &argv, TCA_U32_POLICE, n)) { | |
1149 | fprintf(stderr, "Illegal \"police\"\n"); | |
1150 | return -1; | |
1151 | } | |
dcf13497 | 1152 | terminal_ok++; |
aba5acdf | 1153 | continue; |
5e5b3008 SS |
1154 | } else if (strcmp(*argv, "skip_hw") == 0) { |
1155 | NEXT_ARG(); | |
1156 | flags |= TCA_CLS_FLAGS_SKIP_HW; | |
1157 | continue; | |
1158 | } else if (strcmp(*argv, "skip_sw") == 0) { | |
1159 | NEXT_ARG(); | |
1160 | flags |= TCA_CLS_FLAGS_SKIP_SW; | |
1161 | continue; | |
aba5acdf SH |
1162 | } else if (strcmp(*argv, "help") == 0) { |
1163 | explain(); | |
1164 | return -1; | |
1165 | } else { | |
1166 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
1167 | explain(); | |
1168 | return -1; | |
1169 | } | |
1170 | argc--; argv++; | |
1171 | } | |
1172 | ||
dcf13497 | 1173 | /* We dont necessarily need class/flowids */ |
81c61790 | 1174 | if (terminal_ok) |
dcf13497 | 1175 | sel.sel.flags |= TC_U32_TERMINAL; |
3d0b7439 | 1176 | |
aba5acdf | 1177 | if (order) { |
82e6efe2 JHS |
1178 | if (TC_U32_NODE(t->tcm_handle) && |
1179 | order != TC_U32_NODE(t->tcm_handle)) { | |
aba5acdf SH |
1180 | fprintf(stderr, "\"order\" contradicts \"handle\"\n"); |
1181 | return -1; | |
1182 | } | |
1183 | t->tcm_handle |= order; | |
1184 | } | |
1185 | ||
1186 | if (htid) | |
2373fde9 | 1187 | addattr_l(n, MAX_MSG, TCA_U32_HASH, &htid, 4); |
aba5acdf | 1188 | if (sel_ok) |
3d0b7439 | 1189 | addattr_l(n, MAX_MSG, TCA_U32_SEL, &sel, |
82e6efe2 JHS |
1190 | sizeof(sel.sel) + |
1191 | sel.sel.nkeys * sizeof(struct tc_u32_key)); | |
5e5b3008 | 1192 | if (flags) { |
62281205 SH |
1193 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | |
1194 | TCA_CLS_FLAGS_SKIP_SW))) { | |
1195 | fprintf(stderr, | |
1196 | "skip_hw and skip_sw are mutually exclusive\n"); | |
5e5b3008 SS |
1197 | return -1; |
1198 | } | |
1199 | addattr_l(n, MAX_MSG, TCA_U32_FLAGS, &flags, 4); | |
1200 | } | |
1201 | ||
4a86fe19 | 1202 | tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; |
aba5acdf SH |
1203 | return 0; |
1204 | } | |
1205 | ||
6b1ac654 SH |
1206 | static int u32_print_opt(struct filter_util *qu, FILE *f, struct rtattr *opt, |
1207 | __u32 handle) | |
aba5acdf | 1208 | { |
40eb737e | 1209 | struct rtattr *tb[TCA_U32_MAX + 1]; |
aba5acdf | 1210 | struct tc_u32_sel *sel = NULL; |
d81b135b | 1211 | struct tc_u32_pcnt *pf = NULL; |
aba5acdf SH |
1212 | |
1213 | if (opt == NULL) | |
1214 | return 0; | |
1215 | ||
ac2fc2df | 1216 | parse_rtattr_nested(tb, TCA_U32_MAX, opt); |
aba5acdf SH |
1217 | |
1218 | if (handle) { | |
1219 | SPRINT_BUF(b1); | |
1220 | fprintf(f, "fh %s ", sprint_u32_handle(handle, b1)); | |
1221 | } | |
62281205 SH |
1222 | |
1223 | if (TC_U32_NODE(handle)) | |
aba5acdf | 1224 | fprintf(f, "order %d ", TC_U32_NODE(handle)); |
aba5acdf SH |
1225 | |
1226 | if (tb[TCA_U32_SEL]) { | |
1227 | if (RTA_PAYLOAD(tb[TCA_U32_SEL]) < sizeof(*sel)) | |
1228 | return -1; | |
1229 | ||
1230 | sel = RTA_DATA(tb[TCA_U32_SEL]); | |
1231 | } | |
1232 | ||
1233 | if (tb[TCA_U32_DIVISOR]) { | |
82e6efe2 JHS |
1234 | fprintf(f, "ht divisor %d ", |
1235 | rta_getattr_u32(tb[TCA_U32_DIVISOR])); | |
aba5acdf | 1236 | } else if (tb[TCA_U32_HASH]) { |
ff24746c | 1237 | __u32 htid = rta_getattr_u32(tb[TCA_U32_HASH]); |
32a121cb | 1238 | |
e62077d0 SH |
1239 | fprintf(f, "key ht %x bkt %x ", TC_U32_USERHTID(htid), |
1240 | TC_U32_HASH(htid)); | |
aba5acdf SH |
1241 | } else { |
1242 | fprintf(f, "??? "); | |
1243 | } | |
1244 | if (tb[TCA_U32_CLASSID]) { | |
1245 | SPRINT_BUF(b1); | |
1246 | fprintf(f, "%sflowid %s ", | |
40eb737e | 1247 | !sel || !(sel->flags & TC_U32_TERMINAL) ? "*" : "", |
82e6efe2 JHS |
1248 | sprint_tc_classid(rta_getattr_u32(tb[TCA_U32_CLASSID]), |
1249 | b1)); | |
40eb737e | 1250 | } else if (sel && sel->flags & TC_U32_TERMINAL) { |
aba5acdf SH |
1251 | fprintf(f, "terminal flowid ??? "); |
1252 | } | |
1253 | if (tb[TCA_U32_LINK]) { | |
1254 | SPRINT_BUF(b1); | |
e62077d0 | 1255 | fprintf(f, "link %s ", |
82e6efe2 JHS |
1256 | sprint_u32_handle(rta_getattr_u32(tb[TCA_U32_LINK]), |
1257 | b1)); | |
aba5acdf | 1258 | } |
2373fde9 | 1259 | |
5e5b3008 SS |
1260 | if (tb[TCA_U32_FLAGS]) { |
1261 | __u32 flags = rta_getattr_u32(tb[TCA_U32_FLAGS]); | |
1262 | ||
1263 | if (flags & TCA_CLS_FLAGS_SKIP_HW) | |
1264 | fprintf(f, "skip_hw "); | |
1265 | if (flags & TCA_CLS_FLAGS_SKIP_SW) | |
1266 | fprintf(f, "skip_sw "); | |
1267 | } | |
1268 | ||
d81b135b | 1269 | if (tb[TCA_U32_PCNT]) { |
1270 | if (RTA_PAYLOAD(tb[TCA_U32_PCNT]) < sizeof(*pf)) { | |
32a121cb | 1271 | fprintf(f, "Broken perf counters\n"); |
d81b135b | 1272 | return -1; |
1273 | } | |
1274 | pf = RTA_DATA(tb[TCA_U32_PCNT]); | |
1275 | } | |
aba5acdf | 1276 | |
6f0ba88b | 1277 | if (sel && show_stats && NULL != pf) |
b906243b | 1278 | fprintf(f, " (rule hit %llu success %llu)", |
1279 | (unsigned long long) pf->rcnt, | |
1280 | (unsigned long long) pf->rhit); | |
6f0ba88b | 1281 | |
1282 | if (tb[TCA_U32_MARK]) { | |
1283 | struct tc_u32_mark *mark = RTA_DATA(tb[TCA_U32_MARK]); | |
32a121cb | 1284 | |
6f0ba88b | 1285 | if (RTA_PAYLOAD(tb[TCA_U32_MARK]) < sizeof(*mark)) { |
1286 | fprintf(f, "\n Invalid mark (kernel&iproute2 mismatch)\n"); | |
1287 | } else { | |
1288 | fprintf(f, "\n mark 0x%04x 0x%04x (success %d)", | |
1289 | mark->val, mark->mask, mark->success); | |
1290 | } | |
1291 | } | |
1292 | ||
aba5acdf | 1293 | if (sel) { |
aba5acdf | 1294 | if (sel->nkeys) { |
6b1ac654 | 1295 | int i; |
32a121cb | 1296 | |
dd0c8d19 | 1297 | for (i = 0; i < sel->nkeys; i++) { |
1750abe2 | 1298 | show_keys(f, sel->keys + i); |
d81b135b | 1299 | if (show_stats && NULL != pf) |
6b1ac654 | 1300 | fprintf(f, " (success %llu ) ", |
b906243b | 1301 | (unsigned long long) pf->kcnts[i]); |
2373fde9 | 1302 | } |
aba5acdf SH |
1303 | } |
1304 | ||
40eb737e | 1305 | if (sel->flags & (TC_U32_VAROFFSET | TC_U32_OFFSET)) { |
aba5acdf | 1306 | fprintf(f, "\n offset "); |
40eb737e | 1307 | if (sel->flags & TC_U32_VAROFFSET) |
e62077d0 SH |
1308 | fprintf(f, "%04x>>%d at %d ", |
1309 | ntohs(sel->offmask), | |
1310 | sel->offshift, sel->offoff); | |
aba5acdf SH |
1311 | if (sel->off) |
1312 | fprintf(f, "plus %d ", sel->off); | |
1313 | } | |
40eb737e | 1314 | if (sel->flags & TC_U32_EAT) |
aba5acdf SH |
1315 | fprintf(f, " eat "); |
1316 | ||
1317 | if (sel->hmask) { | |
1318 | fprintf(f, "\n hash mask %08x at %d ", | |
1319 | (unsigned int)htonl(sel->hmask), sel->hoff); | |
1320 | } | |
1321 | } | |
1322 | ||
2373fde9 SH |
1323 | if (tb[TCA_U32_POLICE]) { |
1324 | fprintf(f, "\n"); | |
1325 | tc_print_police(f, tb[TCA_U32_POLICE]); | |
1326 | } | |
62281205 | 1327 | |
2373fde9 SH |
1328 | if (tb[TCA_U32_INDEV]) { |
1329 | struct rtattr *idev = tb[TCA_U32_INDEV]; | |
32a121cb | 1330 | |
ff24746c | 1331 | fprintf(f, "\n input dev %s\n", rta_getattr_str(idev)); |
2373fde9 | 1332 | } |
62281205 SH |
1333 | |
1334 | if (tb[TCA_U32_ACT]) | |
2373fde9 | 1335 | tc_print_action(f, tb[TCA_U32_ACT]); |
2373fde9 | 1336 | |
aba5acdf SH |
1337 | return 0; |
1338 | } | |
1339 | ||
6b7dff17 SH |
1340 | struct filter_util u32_filter_util = { |
1341 | .id = "u32", | |
1342 | .parse_fopt = u32_parse_opt, | |
1343 | .print_fopt = u32_print_opt, | |
aba5acdf | 1344 | }; |