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Commit | Line | Data |
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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 | { | |
32a121cb SH |
33 | fprintf(stderr, "Usage: ... u32 [ match SELECTOR ... ] [ link HTID ] [ classid CLASSID ]\n"); |
34 | fprintf(stderr, " [ action ACTION_SPEC ] [ offset OFFSET_SPEC ]\n"); | |
aba5acdf SH |
35 | fprintf(stderr, " [ ht HTID ] [ hashkey HASHKEY_SPEC ]\n"); |
36 | fprintf(stderr, " [ sample SAMPLE ]\n"); | |
37 | fprintf(stderr, "or u32 divisor DIVISOR\n"); | |
38 | fprintf(stderr, "\n"); | |
39 | fprintf(stderr, "Where: SELECTOR := SAMPLE SAMPLE ...\n"); | |
32a121cb | 40 | fprintf(stderr, " SAMPLE := { ip | ip6 | udp | tcp | icmp | u{32|16|8} | mark } SAMPLE_ARGS [divisor DIVISOR]\n"); |
aba5acdf | 41 | fprintf(stderr, " FILTERID := X:Y:Z\n"); |
e9acc242 | 42 | fprintf(stderr, "\nNOTE: CLASSID is parsed at hexadecimal input.\n"); |
aba5acdf SH |
43 | } |
44 | ||
d1f28cf1 | 45 | static int get_u32_handle(__u32 *handle, const char *str) |
aba5acdf | 46 | { |
dd0c8d19 | 47 | __u32 htid = 0, hash = 0, nodeid = 0; |
aba5acdf SH |
48 | char *tmp = strchr(str, ':'); |
49 | ||
50 | if (tmp == NULL) { | |
51 | if (memcmp("0x", str, 2) == 0) | |
52 | return get_u32(handle, str, 16); | |
53 | return -1; | |
54 | } | |
55 | htid = strtoul(str, &tmp, 16); | |
56 | if (tmp == str && *str != ':' && *str != 0) | |
57 | return -1; | |
dd0c8d19 | 58 | if (htid >= 0x1000) |
aba5acdf SH |
59 | return -1; |
60 | if (*tmp) { | |
40eb737e | 61 | str = tmp + 1; |
aba5acdf SH |
62 | hash = strtoul(str, &tmp, 16); |
63 | if (tmp == str && *str != ':' && *str != 0) | |
64 | return -1; | |
dd0c8d19 | 65 | if (hash >= 0x100) |
aba5acdf SH |
66 | return -1; |
67 | if (*tmp) { | |
40eb737e | 68 | str = tmp + 1; |
aba5acdf SH |
69 | nodeid = strtoul(str, &tmp, 16); |
70 | if (tmp == str && *str != 0) | |
71 | return -1; | |
dd0c8d19 | 72 | if (nodeid >= 0x1000) |
aba5acdf SH |
73 | return -1; |
74 | } | |
75 | } | |
76 | *handle = (htid<<20)|(hash<<12)|nodeid; | |
77 | return 0; | |
78 | } | |
79 | ||
725f2a87 | 80 | static char *sprint_u32_handle(__u32 handle, char *buf) |
aba5acdf SH |
81 | { |
82 | int bsize = SPRINT_BSIZE-1; | |
83 | __u32 htid = TC_U32_HTID(handle); | |
84 | __u32 hash = TC_U32_HASH(handle); | |
85 | __u32 nodeid = TC_U32_NODE(handle); | |
86 | char *b = buf; | |
87 | ||
88 | if (handle == 0) { | |
89 | snprintf(b, bsize, "none"); | |
90 | return b; | |
91 | } | |
92 | if (htid) { | |
93 | int l = snprintf(b, bsize, "%x:", htid>>20); | |
32a121cb | 94 | |
aba5acdf SH |
95 | bsize -= l; |
96 | b += l; | |
97 | } | |
98 | if (nodeid|hash) { | |
99 | if (hash) { | |
100 | int l = snprintf(b, bsize, "%x", hash); | |
32a121cb | 101 | |
aba5acdf SH |
102 | bsize -= l; |
103 | b += l; | |
104 | } | |
105 | if (nodeid) { | |
106 | int l = snprintf(b, bsize, ":%x", nodeid); | |
32a121cb | 107 | |
aba5acdf SH |
108 | bsize -= l; |
109 | b += l; | |
110 | } | |
111 | } | |
112 | if (show_raw) | |
113 | snprintf(b, bsize, "[%08x] ", handle); | |
114 | return buf; | |
115 | } | |
116 | ||
e62077d0 SH |
117 | static int pack_key(struct tc_u32_sel *sel, __u32 key, __u32 mask, |
118 | int off, int offmask) | |
aba5acdf SH |
119 | { |
120 | int i; | |
121 | int hwm = sel->nkeys; | |
122 | ||
123 | key &= mask; | |
124 | ||
dd0c8d19 | 125 | for (i = 0; i < hwm; i++) { |
aba5acdf | 126 | if (sel->keys[i].off == off && sel->keys[i].offmask == offmask) { |
40eb737e | 127 | __u32 intersect = mask & sel->keys[i].mask; |
aba5acdf | 128 | |
40eb737e | 129 | if ((key ^ sel->keys[i].val) & intersect) |
aba5acdf SH |
130 | return -1; |
131 | sel->keys[i].val |= key; | |
132 | sel->keys[i].mask |= mask; | |
133 | return 0; | |
134 | } | |
135 | } | |
136 | ||
137 | if (hwm >= 128) | |
138 | return -1; | |
139 | if (off % 4) | |
140 | return -1; | |
141 | sel->keys[hwm].val = key; | |
142 | sel->keys[hwm].mask = mask; | |
143 | sel->keys[hwm].off = off; | |
144 | sel->keys[hwm].offmask = offmask; | |
145 | sel->nkeys++; | |
146 | return 0; | |
147 | } | |
148 | ||
e62077d0 SH |
149 | static int pack_key32(struct tc_u32_sel *sel, __u32 key, __u32 mask, |
150 | int off, int offmask) | |
aba5acdf SH |
151 | { |
152 | key = htonl(key); | |
153 | mask = htonl(mask); | |
154 | return pack_key(sel, key, mask, off, offmask); | |
155 | } | |
156 | ||
e62077d0 SH |
157 | static int pack_key16(struct tc_u32_sel *sel, __u32 key, __u32 mask, |
158 | int off, int offmask) | |
aba5acdf SH |
159 | { |
160 | if (key > 0xFFFF || mask > 0xFFFF) | |
161 | return -1; | |
162 | ||
163 | if ((off & 3) == 0) { | |
164 | key <<= 16; | |
165 | mask <<= 16; | |
166 | } | |
167 | off &= ~3; | |
168 | key = htonl(key); | |
169 | mask = htonl(mask); | |
170 | ||
171 | return pack_key(sel, key, mask, off, offmask); | |
172 | } | |
173 | ||
82e6efe2 JHS |
174 | static int pack_key8(struct tc_u32_sel *sel, __u32 key, __u32 mask, int off, |
175 | int offmask) | |
aba5acdf SH |
176 | { |
177 | if (key > 0xFF || mask > 0xFF) | |
178 | return -1; | |
179 | ||
180 | if ((off & 3) == 0) { | |
181 | key <<= 24; | |
182 | mask <<= 24; | |
183 | } else if ((off & 3) == 1) { | |
184 | key <<= 16; | |
185 | mask <<= 16; | |
186 | } else if ((off & 3) == 2) { | |
187 | key <<= 8; | |
188 | mask <<= 8; | |
189 | } | |
190 | off &= ~3; | |
191 | key = htonl(key); | |
192 | mask = htonl(mask); | |
193 | ||
194 | return pack_key(sel, key, mask, off, offmask); | |
195 | } | |
196 | ||
197 | ||
d1f28cf1 | 198 | static int parse_at(int *argc_p, char ***argv_p, int *off, int *offmask) |
aba5acdf SH |
199 | { |
200 | int argc = *argc_p; | |
201 | char **argv = *argv_p; | |
202 | char *p = *argv; | |
203 | ||
204 | if (argc <= 0) | |
205 | return -1; | |
206 | ||
207 | if (strlen(p) > strlen("nexthdr+") && | |
208 | memcmp(p, "nexthdr+", strlen("nexthdr+")) == 0) { | |
209 | *offmask = -1; | |
210 | p += strlen("nexthdr+"); | |
211 | } else if (matches(*argv, "nexthdr+") == 0) { | |
212 | NEXT_ARG(); | |
213 | *offmask = -1; | |
214 | p = *argv; | |
215 | } | |
216 | ||
217 | if (get_integer(off, p, 0)) | |
218 | return -1; | |
219 | argc--; argv++; | |
220 | ||
221 | *argc_p = argc; | |
222 | *argv_p = argv; | |
223 | return 0; | |
224 | } | |
225 | ||
226 | ||
e62077d0 SH |
227 | static int parse_u32(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, |
228 | int off, int offmask) | |
aba5acdf SH |
229 | { |
230 | int res = -1; | |
231 | int argc = *argc_p; | |
232 | char **argv = *argv_p; | |
233 | __u32 key; | |
234 | __u32 mask; | |
235 | ||
236 | if (argc < 2) | |
237 | return -1; | |
238 | ||
239 | if (get_u32(&key, *argv, 0)) | |
240 | return -1; | |
241 | argc--; argv++; | |
242 | ||
243 | if (get_u32(&mask, *argv, 16)) | |
244 | return -1; | |
245 | argc--; argv++; | |
246 | ||
247 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
248 | NEXT_ARG(); | |
249 | if (parse_at(&argc, &argv, &off, &offmask)) | |
250 | return -1; | |
251 | } | |
252 | ||
253 | res = pack_key32(sel, key, mask, off, offmask); | |
254 | *argc_p = argc; | |
255 | *argv_p = argv; | |
256 | return res; | |
257 | } | |
258 | ||
e62077d0 SH |
259 | static int parse_u16(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, |
260 | int off, int offmask) | |
aba5acdf SH |
261 | { |
262 | int res = -1; | |
263 | int argc = *argc_p; | |
264 | char **argv = *argv_p; | |
265 | __u32 key; | |
266 | __u32 mask; | |
267 | ||
268 | if (argc < 2) | |
269 | return -1; | |
270 | ||
271 | if (get_u32(&key, *argv, 0)) | |
272 | return -1; | |
273 | argc--; argv++; | |
274 | ||
275 | if (get_u32(&mask, *argv, 16)) | |
276 | return -1; | |
277 | argc--; argv++; | |
278 | ||
279 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
280 | NEXT_ARG(); | |
281 | if (parse_at(&argc, &argv, &off, &offmask)) | |
282 | return -1; | |
283 | } | |
284 | res = pack_key16(sel, key, mask, off, offmask); | |
285 | *argc_p = argc; | |
286 | *argv_p = argv; | |
287 | return res; | |
288 | } | |
289 | ||
e62077d0 SH |
290 | static int parse_u8(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, |
291 | int off, int offmask) | |
aba5acdf SH |
292 | { |
293 | int res = -1; | |
294 | int argc = *argc_p; | |
295 | char **argv = *argv_p; | |
296 | __u32 key; | |
297 | __u32 mask; | |
298 | ||
299 | if (argc < 2) | |
300 | return -1; | |
301 | ||
302 | if (get_u32(&key, *argv, 0)) | |
303 | return -1; | |
304 | argc--; argv++; | |
305 | ||
306 | if (get_u32(&mask, *argv, 16)) | |
307 | return -1; | |
308 | argc--; argv++; | |
309 | ||
310 | if (key > 0xFF || mask > 0xFF) | |
311 | return -1; | |
312 | ||
313 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
314 | NEXT_ARG(); | |
315 | if (parse_at(&argc, &argv, &off, &offmask)) | |
316 | return -1; | |
317 | } | |
318 | ||
319 | res = pack_key8(sel, key, mask, off, offmask); | |
320 | *argc_p = argc; | |
321 | *argv_p = argv; | |
322 | return res; | |
323 | } | |
324 | ||
e62077d0 SH |
325 | static int parse_ip_addr(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, |
326 | int off) | |
aba5acdf SH |
327 | { |
328 | int res = -1; | |
329 | int argc = *argc_p; | |
330 | char **argv = *argv_p; | |
331 | inet_prefix addr; | |
332 | __u32 mask; | |
333 | int offmask = 0; | |
334 | ||
335 | if (argc < 1) | |
336 | return -1; | |
337 | ||
338 | if (get_prefix_1(&addr, *argv, AF_INET)) | |
339 | return -1; | |
340 | argc--; argv++; | |
341 | ||
342 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
343 | NEXT_ARG(); | |
344 | if (parse_at(&argc, &argv, &off, &offmask)) | |
345 | return -1; | |
346 | } | |
347 | ||
348 | mask = 0; | |
349 | if (addr.bitlen) | |
40eb737e | 350 | mask = htonl(0xFFFFFFFF << (32 - addr.bitlen)); |
aba5acdf SH |
351 | if (pack_key(sel, addr.data[0], mask, off, offmask) < 0) |
352 | return -1; | |
353 | res = 0; | |
354 | ||
355 | *argc_p = argc; | |
356 | *argv_p = argv; | |
357 | return res; | |
358 | } | |
359 | ||
e62077d0 SH |
360 | static int parse_ip6_addr(int *argc_p, char ***argv_p, |
361 | struct tc_u32_sel *sel, int off) | |
aba5acdf SH |
362 | { |
363 | int res = -1; | |
364 | int argc = *argc_p; | |
365 | char **argv = *argv_p; | |
366 | int plen = 128; | |
367 | int i; | |
368 | inet_prefix addr; | |
369 | int offmask = 0; | |
370 | ||
371 | if (argc < 1) | |
372 | return -1; | |
373 | ||
374 | if (get_prefix_1(&addr, *argv, AF_INET6)) | |
375 | return -1; | |
376 | argc--; argv++; | |
377 | ||
378 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
379 | NEXT_ARG(); | |
380 | if (parse_at(&argc, &argv, &off, &offmask)) | |
381 | return -1; | |
382 | } | |
383 | ||
384 | plen = addr.bitlen; | |
40eb737e | 385 | for (i = 0; i < plen; i += 32) { |
725f2a87 | 386 | /* if (((i + 31) & ~0x1F) <= plen) { */ |
e62077d0 | 387 | if (i + 31 <= plen) { |
40eb737e PS |
388 | res = pack_key(sel, addr.data[i / 32], |
389 | 0xFFFFFFFF, off + 4 * (i / 32), offmask); | |
e62077d0 | 390 | if (res < 0) |
aba5acdf | 391 | return -1; |
e62077d0 | 392 | } else if (i < plen) { |
40eb737e | 393 | __u32 mask = htonl(0xFFFFFFFF << (32 - (plen - i))); |
32a121cb | 394 | |
40eb737e PS |
395 | res = pack_key(sel, addr.data[i / 32], |
396 | mask, off + 4 * (i / 32), offmask); | |
e62077d0 | 397 | if (res < 0) |
aba5acdf SH |
398 | return -1; |
399 | } | |
400 | } | |
401 | res = 0; | |
402 | ||
403 | *argc_p = argc; | |
404 | *argv_p = argv; | |
405 | return res; | |
406 | } | |
407 | ||
01564122 PL |
408 | static int parse_ip6_class(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) |
409 | { | |
410 | int res = -1; | |
411 | int argc = *argc_p; | |
412 | char **argv = *argv_p; | |
413 | __u32 key; | |
414 | __u32 mask; | |
415 | int off = 0; | |
416 | int offmask = 0; | |
417 | ||
418 | if (argc < 2) | |
419 | return -1; | |
420 | ||
421 | if (get_u32(&key, *argv, 0)) | |
422 | return -1; | |
423 | argc--; argv++; | |
424 | ||
425 | if (get_u32(&mask, *argv, 16)) | |
426 | return -1; | |
427 | argc--; argv++; | |
428 | ||
429 | if (key > 0xFF || mask > 0xFF) | |
430 | return -1; | |
431 | ||
432 | key <<= 20; | |
433 | mask <<= 20; | |
434 | key = htonl(key); | |
435 | mask = htonl(mask); | |
436 | ||
d7ac9ad4 SH |
437 | res = pack_key(sel, key, mask, off, offmask); |
438 | if (res < 0) | |
01564122 PL |
439 | return -1; |
440 | ||
441 | *argc_p = argc; | |
442 | *argv_p = argv; | |
443 | return 0; | |
444 | } | |
445 | ||
b4d41f41 SH |
446 | static int parse_ether_addr(int *argc_p, char ***argv_p, |
447 | struct tc_u32_sel *sel, int off) | |
448 | { | |
449 | int res = -1; | |
450 | int argc = *argc_p; | |
451 | char **argv = *argv_p; | |
452 | __u8 addr[6]; | |
453 | int offmask = 0; | |
b4d41f41 SH |
454 | int i; |
455 | ||
456 | if (argc < 1) | |
457 | return -1; | |
458 | ||
459 | if (sscanf(*argv, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", | |
460 | addr + 0, addr + 1, addr + 2, | |
461 | addr + 3, addr + 4, addr + 5) != 6) { | |
462 | fprintf(stderr, "parse_ether_addr: improperly formed address '%s'\n", | |
463 | *argv); | |
464 | return -1; | |
465 | } | |
466 | ||
467 | argc--; argv++; | |
468 | if (argc > 0 && strcmp(argv[0], "at") == 0) { | |
469 | NEXT_ARG(); | |
470 | if (parse_at(&argc, &argv, &off, &offmask)) | |
471 | return -1; | |
472 | } | |
473 | ||
e3d153c1 SH |
474 | for (i = 0; i < 6; i++) { |
475 | res = pack_key8(sel, addr[i], 0xFF, off + i, offmask); | |
b4d41f41 SH |
476 | if (res < 0) |
477 | return -1; | |
478 | } | |
479 | ||
480 | *argc_p = argc; | |
481 | *argv_p = argv; | |
482 | return res; | |
483 | } | |
484 | ||
aba5acdf SH |
485 | static int parse_ip(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) |
486 | { | |
487 | int res = -1; | |
488 | int argc = *argc_p; | |
489 | char **argv = *argv_p; | |
490 | ||
491 | if (argc < 2) | |
492 | return -1; | |
493 | ||
494 | if (strcmp(*argv, "src") == 0) { | |
495 | NEXT_ARG(); | |
496 | res = parse_ip_addr(&argc, &argv, sel, 12); | |
9fce67dd | 497 | } else if (strcmp(*argv, "dst") == 0) { |
aba5acdf SH |
498 | NEXT_ARG(); |
499 | res = parse_ip_addr(&argc, &argv, sel, 16); | |
9fce67dd | 500 | } else if (strcmp(*argv, "tos") == 0 || |
40eb737e PS |
501 | matches(*argv, "dsfield") == 0 || |
502 | matches(*argv, "precedence") == 0) { | |
aba5acdf SH |
503 | NEXT_ARG(); |
504 | res = parse_u8(&argc, &argv, sel, 1, 0); | |
9fce67dd | 505 | } else if (strcmp(*argv, "ihl") == 0) { |
aba5acdf SH |
506 | NEXT_ARG(); |
507 | res = parse_u8(&argc, &argv, sel, 0, 0); | |
9fce67dd | 508 | } else if (strcmp(*argv, "protocol") == 0) { |
aba5acdf SH |
509 | NEXT_ARG(); |
510 | res = parse_u8(&argc, &argv, sel, 9, 0); | |
9fce67dd | 511 | } else if (strcmp(*argv, "nofrag") == 0) { |
aba5acdf SH |
512 | argc--; argv++; |
513 | res = pack_key16(sel, 0, 0x3FFF, 6, 0); | |
9fce67dd | 514 | } else if (strcmp(*argv, "firstfrag") == 0) { |
aba5acdf | 515 | argc--; argv++; |
690b11f4 | 516 | res = pack_key16(sel, 0x2000, 0x3FFF, 6, 0); |
9fce67dd | 517 | } else if (strcmp(*argv, "df") == 0) { |
aba5acdf SH |
518 | argc--; argv++; |
519 | res = pack_key16(sel, 0x4000, 0x4000, 6, 0); | |
9fce67dd | 520 | } else if (strcmp(*argv, "mf") == 0) { |
aba5acdf SH |
521 | argc--; argv++; |
522 | res = pack_key16(sel, 0x2000, 0x2000, 6, 0); | |
9fce67dd | 523 | } else if (strcmp(*argv, "dport") == 0) { |
aba5acdf SH |
524 | NEXT_ARG(); |
525 | res = parse_u16(&argc, &argv, sel, 22, 0); | |
9fce67dd | 526 | } else if (strcmp(*argv, "sport") == 0) { |
aba5acdf SH |
527 | NEXT_ARG(); |
528 | res = parse_u16(&argc, &argv, sel, 20, 0); | |
9fce67dd | 529 | } else if (strcmp(*argv, "icmp_type") == 0) { |
aba5acdf SH |
530 | NEXT_ARG(); |
531 | res = parse_u8(&argc, &argv, sel, 20, 0); | |
9fce67dd | 532 | } else if (strcmp(*argv, "icmp_code") == 0) { |
aba5acdf | 533 | NEXT_ARG(); |
1d62f99f | 534 | res = parse_u8(&argc, &argv, sel, 21, 0); |
9fce67dd SH |
535 | } else |
536 | return -1; | |
aba5acdf | 537 | |
aba5acdf SH |
538 | *argc_p = argc; |
539 | *argv_p = argv; | |
540 | return res; | |
541 | } | |
3d0b7439 | 542 | |
aba5acdf SH |
543 | static int parse_ip6(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) |
544 | { | |
545 | int res = -1; | |
546 | int argc = *argc_p; | |
547 | char **argv = *argv_p; | |
548 | ||
549 | if (argc < 2) | |
550 | return -1; | |
551 | ||
552 | if (strcmp(*argv, "src") == 0) { | |
553 | NEXT_ARG(); | |
554 | res = parse_ip6_addr(&argc, &argv, sel, 8); | |
9fce67dd | 555 | } else if (strcmp(*argv, "dst") == 0) { |
aba5acdf SH |
556 | NEXT_ARG(); |
557 | res = parse_ip6_addr(&argc, &argv, sel, 24); | |
9fce67dd | 558 | } else if (strcmp(*argv, "priority") == 0) { |
aba5acdf | 559 | NEXT_ARG(); |
01564122 | 560 | res = parse_ip6_class(&argc, &argv, sel); |
9fce67dd | 561 | } else if (strcmp(*argv, "protocol") == 0) { |
aba5acdf SH |
562 | NEXT_ARG(); |
563 | res = parse_u8(&argc, &argv, sel, 6, 0); | |
9fce67dd | 564 | } else if (strcmp(*argv, "flowlabel") == 0) { |
aba5acdf SH |
565 | NEXT_ARG(); |
566 | res = parse_u32(&argc, &argv, sel, 0, 0); | |
9fce67dd | 567 | } else if (strcmp(*argv, "dport") == 0) { |
aba5acdf SH |
568 | NEXT_ARG(); |
569 | res = parse_u16(&argc, &argv, sel, 42, 0); | |
9fce67dd | 570 | } else if (strcmp(*argv, "sport") == 0) { |
aba5acdf SH |
571 | NEXT_ARG(); |
572 | res = parse_u16(&argc, &argv, sel, 40, 0); | |
9fce67dd | 573 | } else if (strcmp(*argv, "icmp_type") == 0) { |
aba5acdf SH |
574 | NEXT_ARG(); |
575 | res = parse_u8(&argc, &argv, sel, 40, 0); | |
9fce67dd | 576 | } else if (strcmp(*argv, "icmp_code") == 0) { |
aba5acdf SH |
577 | NEXT_ARG(); |
578 | res = parse_u8(&argc, &argv, sel, 41, 1); | |
9fce67dd SH |
579 | } else |
580 | return -1; | |
aba5acdf | 581 | |
aba5acdf SH |
582 | *argc_p = argc; |
583 | *argv_p = argv; | |
584 | return res; | |
585 | } | |
586 | ||
b4d41f41 SH |
587 | static int parse_ether(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) |
588 | { | |
589 | int res = -1; | |
590 | int argc = *argc_p; | |
591 | char **argv = *argv_p; | |
592 | ||
593 | if (argc < 2) | |
594 | return -1; | |
595 | ||
596 | if (strcmp(*argv, "src") == 0) { | |
597 | NEXT_ARG(); | |
598 | res = parse_ether_addr(&argc, &argv, sel, -8); | |
599 | } else if (strcmp(*argv, "dst") == 0) { | |
600 | NEXT_ARG(); | |
601 | res = parse_ether_addr(&argc, &argv, sel, -14); | |
602 | } else { | |
603 | fprintf(stderr, "Unknown match: ether %s\n", *argv); | |
604 | return -1; | |
605 | } | |
606 | ||
607 | *argc_p = argc; | |
608 | *argv_p = argv; | |
609 | return res; | |
610 | } | |
611 | ||
aba5acdf SH |
612 | #define parse_tcp parse_udp |
613 | static int parse_udp(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
614 | { | |
615 | int res = -1; | |
616 | int argc = *argc_p; | |
617 | char **argv = *argv_p; | |
618 | ||
619 | if (argc < 2) | |
620 | return -1; | |
621 | ||
622 | if (strcmp(*argv, "src") == 0) { | |
623 | NEXT_ARG(); | |
624 | res = parse_u16(&argc, &argv, sel, 0, -1); | |
9fce67dd | 625 | } else if (strcmp(*argv, "dst") == 0) { |
aba5acdf SH |
626 | NEXT_ARG(); |
627 | res = parse_u16(&argc, &argv, sel, 2, -1); | |
9fce67dd SH |
628 | } else |
629 | return -1; | |
aba5acdf | 630 | |
aba5acdf SH |
631 | *argc_p = argc; |
632 | *argv_p = argv; | |
633 | return res; | |
634 | } | |
635 | ||
6b1ac654 | 636 | |
aba5acdf SH |
637 | static int parse_icmp(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) |
638 | { | |
639 | int res = -1; | |
640 | int argc = *argc_p; | |
641 | char **argv = *argv_p; | |
642 | ||
643 | if (argc < 2) | |
644 | return -1; | |
645 | ||
646 | if (strcmp(*argv, "type") == 0) { | |
647 | NEXT_ARG(); | |
648 | res = parse_u8(&argc, &argv, sel, 0, -1); | |
9fce67dd | 649 | } else if (strcmp(*argv, "code") == 0) { |
aba5acdf SH |
650 | NEXT_ARG(); |
651 | res = parse_u8(&argc, &argv, sel, 1, -1); | |
9fce67dd SH |
652 | } else |
653 | return -1; | |
aba5acdf | 654 | |
aba5acdf SH |
655 | *argc_p = argc; |
656 | *argv_p = argv; | |
657 | return res; | |
658 | } | |
659 | ||
6f0ba88b | 660 | static int parse_mark(int *argc_p, char ***argv_p, struct nlmsghdr *n) |
661 | { | |
662 | int res = -1; | |
663 | int argc = *argc_p; | |
664 | char **argv = *argv_p; | |
665 | struct tc_u32_mark mark; | |
666 | ||
667 | if (argc <= 1) | |
668 | return -1; | |
669 | ||
670 | if (get_u32(&mark.val, *argv, 0)) { | |
671 | fprintf(stderr, "Illegal \"mark\" value\n"); | |
672 | return -1; | |
673 | } | |
674 | NEXT_ARG(); | |
675 | ||
676 | if (get_u32(&mark.mask, *argv, 0)) { | |
677 | fprintf(stderr, "Illegal \"mark\" mask\n"); | |
678 | return -1; | |
679 | } | |
680 | NEXT_ARG(); | |
681 | ||
682 | if ((mark.val & mark.mask) != mark.val) { | |
683 | fprintf(stderr, "Illegal \"mark\" (impossible combination)\n"); | |
684 | return -1; | |
685 | } | |
aba5acdf | 686 | |
6f0ba88b | 687 | addattr_l(n, MAX_MSG, TCA_U32_MARK, &mark, sizeof(mark)); |
688 | res = 0; | |
689 | ||
690 | *argc_p = argc; | |
691 | *argv_p = argv; | |
692 | return res; | |
693 | } | |
aba5acdf | 694 | |
e62077d0 SH |
695 | static int parse_selector(int *argc_p, char ***argv_p, |
696 | struct tc_u32_sel *sel, struct nlmsghdr *n) | |
aba5acdf SH |
697 | { |
698 | int argc = *argc_p; | |
699 | char **argv = *argv_p; | |
700 | int res = -1; | |
701 | ||
702 | if (argc <= 0) | |
703 | return -1; | |
704 | ||
705 | if (matches(*argv, "u32") == 0) { | |
706 | NEXT_ARG(); | |
707 | res = parse_u32(&argc, &argv, sel, 0, 0); | |
9fce67dd | 708 | } else if (matches(*argv, "u16") == 0) { |
aba5acdf SH |
709 | NEXT_ARG(); |
710 | res = parse_u16(&argc, &argv, sel, 0, 0); | |
9fce67dd | 711 | } else if (matches(*argv, "u8") == 0) { |
aba5acdf SH |
712 | NEXT_ARG(); |
713 | res = parse_u8(&argc, &argv, sel, 0, 0); | |
9fce67dd | 714 | } else if (matches(*argv, "ip") == 0) { |
aba5acdf SH |
715 | NEXT_ARG(); |
716 | res = parse_ip(&argc, &argv, sel); | |
32a121cb | 717 | } else if (matches(*argv, "ip6") == 0) { |
aba5acdf SH |
718 | NEXT_ARG(); |
719 | res = parse_ip6(&argc, &argv, sel); | |
9fce67dd | 720 | } else if (matches(*argv, "udp") == 0) { |
aba5acdf SH |
721 | NEXT_ARG(); |
722 | res = parse_udp(&argc, &argv, sel); | |
9fce67dd | 723 | } else if (matches(*argv, "tcp") == 0) { |
aba5acdf SH |
724 | NEXT_ARG(); |
725 | res = parse_tcp(&argc, &argv, sel); | |
9fce67dd | 726 | } else if (matches(*argv, "icmp") == 0) { |
aba5acdf SH |
727 | NEXT_ARG(); |
728 | res = parse_icmp(&argc, &argv, sel); | |
9fce67dd | 729 | } else if (matches(*argv, "mark") == 0) { |
6f0ba88b | 730 | NEXT_ARG(); |
731 | res = parse_mark(&argc, &argv, n); | |
b4d41f41 SH |
732 | } else if (matches(*argv, "ether") == 0) { |
733 | NEXT_ARG(); | |
734 | res = parse_ether(&argc, &argv, sel); | |
3d0b7439 | 735 | } else |
9fce67dd | 736 | return -1; |
aba5acdf | 737 | |
aba5acdf SH |
738 | *argc_p = argc; |
739 | *argv_p = argv; | |
740 | return res; | |
741 | } | |
742 | ||
743 | static int parse_offset(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
744 | { | |
745 | int argc = *argc_p; | |
746 | char **argv = *argv_p; | |
747 | ||
748 | while (argc > 0) { | |
749 | if (matches(*argv, "plus") == 0) { | |
750 | int off; | |
32a121cb | 751 | |
aba5acdf SH |
752 | NEXT_ARG(); |
753 | if (get_integer(&off, *argv, 0)) | |
754 | return -1; | |
755 | sel->off = off; | |
756 | sel->flags |= TC_U32_OFFSET; | |
757 | } else if (matches(*argv, "at") == 0) { | |
758 | int off; | |
32a121cb | 759 | |
aba5acdf SH |
760 | NEXT_ARG(); |
761 | if (get_integer(&off, *argv, 0)) | |
762 | return -1; | |
763 | sel->offoff = off; | |
764 | if (off%2) { | |
765 | fprintf(stderr, "offset \"at\" must be even\n"); | |
766 | return -1; | |
767 | } | |
768 | sel->flags |= TC_U32_VAROFFSET; | |
769 | } else if (matches(*argv, "mask") == 0) { | |
aba5acdf | 770 | NEXT_ARG(); |
9f7401fa | 771 | if (get_be16(&sel->offmask, *argv, 16)) |
aba5acdf | 772 | return -1; |
aba5acdf SH |
773 | sel->flags |= TC_U32_VAROFFSET; |
774 | } else if (matches(*argv, "shift") == 0) { | |
775 | int shift; | |
32a121cb | 776 | |
aba5acdf SH |
777 | NEXT_ARG(); |
778 | if (get_integer(&shift, *argv, 0)) | |
779 | return -1; | |
780 | sel->offshift = shift; | |
781 | sel->flags |= TC_U32_VAROFFSET; | |
782 | } else if (matches(*argv, "eat") == 0) { | |
783 | sel->flags |= TC_U32_EAT; | |
784 | } else { | |
785 | break; | |
786 | } | |
787 | argc--; argv++; | |
788 | } | |
789 | ||
790 | *argc_p = argc; | |
791 | *argv_p = argv; | |
792 | return 0; | |
793 | } | |
794 | ||
795 | static int parse_hashkey(int *argc_p, char ***argv_p, struct tc_u32_sel *sel) | |
796 | { | |
797 | int argc = *argc_p; | |
798 | char **argv = *argv_p; | |
799 | ||
800 | while (argc > 0) { | |
801 | if (matches(*argv, "mask") == 0) { | |
aba5acdf | 802 | NEXT_ARG(); |
9f7401fa | 803 | if (get_be32(&sel->hmask, *argv, 16)) |
aba5acdf | 804 | return -1; |
aba5acdf SH |
805 | } else if (matches(*argv, "at") == 0) { |
806 | int num; | |
32a121cb | 807 | |
aba5acdf SH |
808 | NEXT_ARG(); |
809 | if (get_integer(&num, *argv, 0)) | |
810 | return -1; | |
811 | if (num%4) | |
812 | return -1; | |
813 | sel->hoff = num; | |
814 | } else { | |
815 | break; | |
816 | } | |
817 | argc--; argv++; | |
818 | } | |
819 | ||
820 | *argc_p = argc; | |
821 | *argv_p = argv; | |
822 | return 0; | |
823 | } | |
824 | ||
1750abe2 | 825 | static void print_ipv4(FILE *f, const struct tc_u32_key *key) |
6b1ac654 SH |
826 | { |
827 | char abuf[256]; | |
828 | ||
6b1ac654 | 829 | switch (key->off) { |
4c9ffc2f SH |
830 | case 0: |
831 | switch (ntohl(key->mask)) { | |
832 | case 0x0f000000: | |
82e6efe2 JHS |
833 | fprintf(f, "\n match IP ihl %u", |
834 | ntohl(key->val) >> 24); | |
4c9ffc2f SH |
835 | return; |
836 | case 0x00ff0000: | |
82e6efe2 JHS |
837 | fprintf(f, "\n match IP dsfield %#x", |
838 | ntohl(key->val) >> 16); | |
4c9ffc2f SH |
839 | return; |
840 | } | |
841 | break; | |
842 | case 8: | |
843 | if (ntohl(key->mask) == 0x00ff0000) { | |
82e6efe2 JHS |
844 | fprintf(f, "\n match IP protocol %d", |
845 | ntohl(key->val) >> 16); | |
4c9ffc2f SH |
846 | return; |
847 | } | |
848 | break; | |
6b1ac654 SH |
849 | case 12: |
850 | case 16: { | |
851 | int bits = mask2bits(key->mask); | |
32a121cb | 852 | |
6b1ac654 | 853 | if (bits >= 0) { |
3d0b7439 | 854 | fprintf(f, "\n %s %s/%d", |
1750abe2 | 855 | key->off == 12 ? "match IP src" : "match IP dst", |
e62077d0 SH |
856 | inet_ntop(AF_INET, &key->val, |
857 | abuf, sizeof(abuf)), | |
6b1ac654 SH |
858 | bits); |
859 | return; | |
860 | } | |
861 | } | |
862 | break; | |
863 | ||
864 | case 20: | |
4c9ffc2f SH |
865 | switch (ntohl(key->mask)) { |
866 | case 0x0000ffff: | |
bcd7abdd | 867 | fprintf(f, "\n match dport %u", |
4c9ffc2f SH |
868 | ntohl(key->val) & 0xffff); |
869 | return; | |
870 | case 0xffff0000: | |
bcd7abdd | 871 | fprintf(f, "\n match sport %u", |
4c9ffc2f SH |
872 | ntohl(key->val) >> 16); |
873 | return; | |
874 | case 0xffffffff: | |
bcd7abdd | 875 | fprintf(f, "\n match dport %u, match sport %u", |
4c9ffc2f SH |
876 | ntohl(key->val) & 0xffff, |
877 | ntohl(key->val) >> 16); | |
878 | ||
6b1ac654 SH |
879 | return; |
880 | } | |
1750abe2 | 881 | /* XXX: Default print_raw */ |
6b1ac654 | 882 | } |
1750abe2 | 883 | } |
6b1ac654 | 884 | |
d13cee6d SH |
885 | static void print_ipv6(FILE *f, const struct tc_u32_key *key) |
886 | { | |
887 | char abuf[256]; | |
888 | ||
889 | switch (key->off) { | |
890 | case 0: | |
891 | switch (ntohl(key->mask)) { | |
892 | case 0x0f000000: | |
82e6efe2 JHS |
893 | fprintf(f, "\n match IP ihl %u", |
894 | ntohl(key->val) >> 24); | |
d13cee6d SH |
895 | return; |
896 | case 0x00ff0000: | |
82e6efe2 JHS |
897 | fprintf(f, "\n match IP dsfield %#x", |
898 | ntohl(key->val) >> 16); | |
d13cee6d SH |
899 | return; |
900 | } | |
901 | break; | |
902 | case 8: | |
903 | if (ntohl(key->mask) == 0x00ff0000) { | |
82e6efe2 JHS |
904 | fprintf(f, "\n match IP protocol %d", |
905 | ntohl(key->val) >> 16); | |
d13cee6d SH |
906 | return; |
907 | } | |
908 | break; | |
909 | case 12: | |
910 | case 16: { | |
911 | int bits = mask2bits(key->mask); | |
32a121cb | 912 | |
d13cee6d | 913 | if (bits >= 0) { |
3d0b7439 | 914 | fprintf(f, "\n %s %s/%d", |
d13cee6d SH |
915 | key->off == 12 ? "match IP src" : "match IP dst", |
916 | inet_ntop(AF_INET, &key->val, | |
917 | abuf, sizeof(abuf)), | |
918 | bits); | |
919 | return; | |
920 | } | |
921 | } | |
922 | break; | |
923 | ||
924 | case 20: | |
925 | switch (ntohl(key->mask)) { | |
926 | case 0x0000ffff: | |
927 | fprintf(f, "\n match sport %u", | |
928 | ntohl(key->val) & 0xffff); | |
929 | return; | |
930 | case 0xffff0000: | |
931 | fprintf(f, "\n match dport %u", | |
932 | ntohl(key->val) >> 16); | |
933 | return; | |
934 | case 0xffffffff: | |
935 | fprintf(f, "\n match sport %u, match dport %u", | |
936 | ntohl(key->val) & 0xffff, | |
937 | ntohl(key->val) >> 16); | |
938 | ||
939 | return; | |
940 | } | |
941 | /* XXX: Default print_raw */ | |
942 | } | |
943 | } | |
944 | ||
1750abe2 | 945 | static void print_raw(FILE *f, const struct tc_u32_key *key) |
946 | { | |
3d0b7439 | 947 | fprintf(f, "\n match %08x/%08x at %s%d", |
6b1ac654 SH |
948 | (unsigned int)ntohl(key->val), |
949 | (unsigned int)ntohl(key->mask), | |
950 | key->offmask ? "nexthdr+" : "", | |
951 | key->off); | |
952 | } | |
953 | ||
1750abe2 | 954 | static const struct { |
955 | __u16 proto; | |
956 | __u16 pad; | |
957 | void (*pprinter)(FILE *f, const struct tc_u32_key *key); | |
958 | } u32_pprinters[] = { | |
32a121cb | 959 | {0, 0, print_raw}, |
1750abe2 | 960 | {ETH_P_IP, 0, print_ipv4}, |
d13cee6d | 961 | {ETH_P_IPV6, 0, print_ipv6}, |
1750abe2 | 962 | }; |
963 | ||
964 | static void show_keys(FILE *f, const struct tc_u32_key *key) | |
965 | { | |
966 | int i = 0; | |
967 | ||
968 | if (!show_pretty) | |
969 | goto show_k; | |
970 | ||
32a121cb | 971 | for (i = 0; i < ARRAY_SIZE(u32_pprinters); i++) { |
1750abe2 | 972 | if (u32_pprinters[i].proto == ntohs(f_proto)) { |
973 | show_k: | |
974 | u32_pprinters[i].pprinter(f, key); | |
975 | return; | |
976 | } | |
977 | } | |
978 | ||
979 | i = 0; | |
980 | goto show_k; | |
981 | } | |
982 | ||
983 | static int u32_parse_opt(struct filter_util *qu, char *handle, | |
6b1ac654 | 984 | int argc, char **argv, struct nlmsghdr *n) |
aba5acdf SH |
985 | { |
986 | struct { | |
987 | struct tc_u32_sel sel; | |
988 | struct tc_u32_key keys[128]; | |
989 | } sel; | |
990 | struct tcmsg *t = NLMSG_DATA(n); | |
991 | struct rtattr *tail; | |
dcf13497 | 992 | int sel_ok = 0, terminal_ok = 0; |
aba5acdf SH |
993 | int sample_ok = 0; |
994 | __u32 htid = 0; | |
995 | __u32 order = 0; | |
996 | ||
997 | memset(&sel, 0, sizeof(sel)); | |
998 | ||
999 | if (handle && get_u32_handle(&t->tcm_handle, handle)) { | |
1000 | fprintf(stderr, "Illegal filter ID\n"); | |
1001 | return -1; | |
1002 | } | |
1003 | ||
1004 | if (argc == 0) | |
1005 | return 0; | |
1006 | ||
4a86fe19 | 1007 | tail = NLMSG_TAIL(n); |
2373fde9 | 1008 | addattr_l(n, MAX_MSG, TCA_OPTIONS, NULL, 0); |
aba5acdf SH |
1009 | |
1010 | while (argc > 0) { | |
1011 | if (matches(*argv, "match") == 0) { | |
1012 | NEXT_ARG(); | |
6f0ba88b | 1013 | if (parse_selector(&argc, &argv, &sel.sel, n)) { |
aba5acdf SH |
1014 | fprintf(stderr, "Illegal \"match\"\n"); |
1015 | return -1; | |
1016 | } | |
1017 | sel_ok++; | |
1018 | continue; | |
1019 | } else if (matches(*argv, "offset") == 0) { | |
1020 | NEXT_ARG(); | |
1021 | if (parse_offset(&argc, &argv, &sel.sel)) { | |
1022 | fprintf(stderr, "Illegal \"offset\"\n"); | |
1023 | return -1; | |
1024 | } | |
1025 | continue; | |
1026 | } else if (matches(*argv, "hashkey") == 0) { | |
1027 | NEXT_ARG(); | |
1028 | if (parse_hashkey(&argc, &argv, &sel.sel)) { | |
1029 | fprintf(stderr, "Illegal \"hashkey\"\n"); | |
1030 | return -1; | |
1031 | } | |
1032 | continue; | |
1033 | } else if (matches(*argv, "classid") == 0 || | |
1034 | strcmp(*argv, "flowid") == 0) { | |
82e6efe2 | 1035 | unsigned int flowid; |
32a121cb | 1036 | |
aba5acdf | 1037 | NEXT_ARG(); |
82e6efe2 | 1038 | if (get_tc_classid(&flowid, *argv)) { |
aba5acdf SH |
1039 | fprintf(stderr, "Illegal \"classid\"\n"); |
1040 | return -1; | |
1041 | } | |
82e6efe2 | 1042 | addattr_l(n, MAX_MSG, TCA_U32_CLASSID, &flowid, 4); |
aba5acdf SH |
1043 | sel.sel.flags |= TC_U32_TERMINAL; |
1044 | } else if (matches(*argv, "divisor") == 0) { | |
32a121cb SH |
1045 | unsigned int divisor; |
1046 | ||
aba5acdf | 1047 | NEXT_ARG(); |
ae665a52 | 1048 | if (get_unsigned(&divisor, *argv, 0) || |
46b67dab SH |
1049 | divisor == 0 || |
1050 | divisor > 0x100 || ((divisor - 1) & divisor)) { | |
aba5acdf SH |
1051 | fprintf(stderr, "Illegal \"divisor\"\n"); |
1052 | return -1; | |
1053 | } | |
2373fde9 | 1054 | addattr_l(n, MAX_MSG, TCA_U32_DIVISOR, &divisor, 4); |
aba5acdf SH |
1055 | } else if (matches(*argv, "order") == 0) { |
1056 | NEXT_ARG(); | |
1057 | if (get_u32(&order, *argv, 0)) { | |
1058 | fprintf(stderr, "Illegal \"order\"\n"); | |
1059 | return -1; | |
1060 | } | |
1061 | } else if (strcmp(*argv, "link") == 0) { | |
82e6efe2 | 1062 | unsigned int linkid; |
32a121cb | 1063 | |
aba5acdf | 1064 | NEXT_ARG(); |
82e6efe2 | 1065 | if (get_u32_handle(&linkid, *argv)) { |
aba5acdf SH |
1066 | fprintf(stderr, "Illegal \"link\"\n"); |
1067 | return -1; | |
1068 | } | |
82e6efe2 | 1069 | if (linkid && TC_U32_NODE(linkid)) { |
aba5acdf SH |
1070 | fprintf(stderr, "\"link\" must be a hash table.\n"); |
1071 | return -1; | |
1072 | } | |
2373fde9 | 1073 | addattr_l(n, MAX_MSG, TCA_U32_LINK, &handle, 4); |
aba5acdf | 1074 | } else if (strcmp(*argv, "ht") == 0) { |
82e6efe2 | 1075 | unsigned int ht; |
32a121cb | 1076 | |
aba5acdf | 1077 | NEXT_ARG(); |
82e6efe2 | 1078 | if (get_u32_handle(&ht, *argv)) { |
aba5acdf SH |
1079 | fprintf(stderr, "Illegal \"ht\"\n"); |
1080 | return -1; | |
1081 | } | |
82e6efe2 | 1082 | if (handle && TC_U32_NODE(ht)) { |
aba5acdf SH |
1083 | fprintf(stderr, "\"ht\" must be a hash table.\n"); |
1084 | return -1; | |
1085 | } | |
1086 | if (sample_ok) | |
82e6efe2 | 1087 | htid = (htid & 0xFF000) | (ht & 0xFFF00000); |
aba5acdf | 1088 | else |
82e6efe2 | 1089 | htid = (ht & 0xFFFFF000); |
aba5acdf SH |
1090 | } else if (strcmp(*argv, "sample") == 0) { |
1091 | __u32 hash; | |
32a121cb | 1092 | unsigned int divisor = 0x100; |
267480f5 | 1093 | |
aba5acdf SH |
1094 | struct { |
1095 | struct tc_u32_sel sel; | |
1096 | struct tc_u32_key keys[4]; | |
1097 | } sel2; | |
46b67dab | 1098 | memset(&sel2, 0, sizeof(sel2)); |
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 SH |
1124 | } else if (strcmp(*argv, "indev") == 0) { |
1125 | char ind[IFNAMSIZ + 1]; | |
32a121cb | 1126 | |
725f2a87 | 1127 | memset(ind, 0, sizeof(ind)); |
2373fde9 SH |
1128 | argc--; |
1129 | argv++; | |
1130 | if (argc < 1) { | |
1131 | fprintf(stderr, "Illegal indev\n"); | |
1132 | return -1; | |
1133 | } | |
725f2a87 | 1134 | strncpy(ind, *argv, sizeof(ind) - 1); |
82e6efe2 JHS |
1135 | addattr_l(n, MAX_MSG, TCA_U32_INDEV, ind, |
1136 | strlen(ind) + 1); | |
d81b135b | 1137 | |
2373fde9 SH |
1138 | } else if (matches(*argv, "action") == 0) { |
1139 | NEXT_ARG(); | |
1140 | if (parse_action(&argc, &argv, TCA_U32_ACT, n)) { | |
1141 | fprintf(stderr, "Illegal \"action\"\n"); | |
1142 | return -1; | |
1143 | } | |
dcf13497 | 1144 | terminal_ok++; |
2373fde9 | 1145 | continue; |
d81b135b | 1146 | |
aba5acdf SH |
1147 | } else if (matches(*argv, "police") == 0) { |
1148 | NEXT_ARG(); | |
1149 | if (parse_police(&argc, &argv, TCA_U32_POLICE, n)) { | |
1150 | fprintf(stderr, "Illegal \"police\"\n"); | |
1151 | return -1; | |
1152 | } | |
dcf13497 | 1153 | terminal_ok++; |
aba5acdf SH |
1154 | continue; |
1155 | } else if (strcmp(*argv, "help") == 0) { | |
1156 | explain(); | |
1157 | return -1; | |
1158 | } else { | |
1159 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
1160 | explain(); | |
1161 | return -1; | |
1162 | } | |
1163 | argc--; argv++; | |
1164 | } | |
1165 | ||
dcf13497 | 1166 | /* We dont necessarily need class/flowids */ |
81c61790 | 1167 | if (terminal_ok) |
dcf13497 | 1168 | sel.sel.flags |= TC_U32_TERMINAL; |
3d0b7439 | 1169 | |
aba5acdf | 1170 | if (order) { |
82e6efe2 JHS |
1171 | if (TC_U32_NODE(t->tcm_handle) && |
1172 | order != TC_U32_NODE(t->tcm_handle)) { | |
aba5acdf SH |
1173 | fprintf(stderr, "\"order\" contradicts \"handle\"\n"); |
1174 | return -1; | |
1175 | } | |
1176 | t->tcm_handle |= order; | |
1177 | } | |
1178 | ||
1179 | if (htid) | |
2373fde9 | 1180 | addattr_l(n, MAX_MSG, TCA_U32_HASH, &htid, 4); |
aba5acdf | 1181 | if (sel_ok) |
3d0b7439 | 1182 | addattr_l(n, MAX_MSG, TCA_U32_SEL, &sel, |
82e6efe2 JHS |
1183 | sizeof(sel.sel) + |
1184 | sel.sel.nkeys * sizeof(struct tc_u32_key)); | |
4a86fe19 | 1185 | tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; |
aba5acdf SH |
1186 | return 0; |
1187 | } | |
1188 | ||
6b1ac654 SH |
1189 | static int u32_print_opt(struct filter_util *qu, FILE *f, struct rtattr *opt, |
1190 | __u32 handle) | |
aba5acdf | 1191 | { |
40eb737e | 1192 | struct rtattr *tb[TCA_U32_MAX + 1]; |
aba5acdf | 1193 | struct tc_u32_sel *sel = NULL; |
d81b135b | 1194 | struct tc_u32_pcnt *pf = NULL; |
aba5acdf SH |
1195 | |
1196 | if (opt == NULL) | |
1197 | return 0; | |
1198 | ||
ac2fc2df | 1199 | parse_rtattr_nested(tb, TCA_U32_MAX, opt); |
aba5acdf SH |
1200 | |
1201 | if (handle) { | |
1202 | SPRINT_BUF(b1); | |
1203 | fprintf(f, "fh %s ", sprint_u32_handle(handle, b1)); | |
1204 | } | |
1205 | if (TC_U32_NODE(handle)) { | |
1206 | fprintf(f, "order %d ", TC_U32_NODE(handle)); | |
1207 | } | |
1208 | ||
1209 | if (tb[TCA_U32_SEL]) { | |
1210 | if (RTA_PAYLOAD(tb[TCA_U32_SEL]) < sizeof(*sel)) | |
1211 | return -1; | |
1212 | ||
1213 | sel = RTA_DATA(tb[TCA_U32_SEL]); | |
1214 | } | |
1215 | ||
1216 | if (tb[TCA_U32_DIVISOR]) { | |
82e6efe2 JHS |
1217 | fprintf(f, "ht divisor %d ", |
1218 | rta_getattr_u32(tb[TCA_U32_DIVISOR])); | |
aba5acdf | 1219 | } else if (tb[TCA_U32_HASH]) { |
ff24746c | 1220 | __u32 htid = rta_getattr_u32(tb[TCA_U32_HASH]); |
32a121cb | 1221 | |
e62077d0 SH |
1222 | fprintf(f, "key ht %x bkt %x ", TC_U32_USERHTID(htid), |
1223 | TC_U32_HASH(htid)); | |
aba5acdf SH |
1224 | } else { |
1225 | fprintf(f, "??? "); | |
1226 | } | |
1227 | if (tb[TCA_U32_CLASSID]) { | |
1228 | SPRINT_BUF(b1); | |
1229 | fprintf(f, "%sflowid %s ", | |
40eb737e | 1230 | !sel || !(sel->flags & TC_U32_TERMINAL) ? "*" : "", |
82e6efe2 JHS |
1231 | sprint_tc_classid(rta_getattr_u32(tb[TCA_U32_CLASSID]), |
1232 | b1)); | |
40eb737e | 1233 | } else if (sel && sel->flags & TC_U32_TERMINAL) { |
aba5acdf SH |
1234 | fprintf(f, "terminal flowid ??? "); |
1235 | } | |
1236 | if (tb[TCA_U32_LINK]) { | |
1237 | SPRINT_BUF(b1); | |
e62077d0 | 1238 | fprintf(f, "link %s ", |
82e6efe2 JHS |
1239 | sprint_u32_handle(rta_getattr_u32(tb[TCA_U32_LINK]), |
1240 | b1)); | |
aba5acdf | 1241 | } |
2373fde9 | 1242 | |
d81b135b | 1243 | if (tb[TCA_U32_PCNT]) { |
1244 | if (RTA_PAYLOAD(tb[TCA_U32_PCNT]) < sizeof(*pf)) { | |
32a121cb | 1245 | fprintf(f, "Broken perf counters\n"); |
d81b135b | 1246 | return -1; |
1247 | } | |
1248 | pf = RTA_DATA(tb[TCA_U32_PCNT]); | |
1249 | } | |
aba5acdf | 1250 | |
6f0ba88b | 1251 | if (sel && show_stats && NULL != pf) |
b906243b | 1252 | fprintf(f, " (rule hit %llu success %llu)", |
1253 | (unsigned long long) pf->rcnt, | |
1254 | (unsigned long long) pf->rhit); | |
6f0ba88b | 1255 | |
1256 | if (tb[TCA_U32_MARK]) { | |
1257 | struct tc_u32_mark *mark = RTA_DATA(tb[TCA_U32_MARK]); | |
32a121cb | 1258 | |
6f0ba88b | 1259 | if (RTA_PAYLOAD(tb[TCA_U32_MARK]) < sizeof(*mark)) { |
1260 | fprintf(f, "\n Invalid mark (kernel&iproute2 mismatch)\n"); | |
1261 | } else { | |
1262 | fprintf(f, "\n mark 0x%04x 0x%04x (success %d)", | |
1263 | mark->val, mark->mask, mark->success); | |
1264 | } | |
1265 | } | |
1266 | ||
aba5acdf | 1267 | if (sel) { |
aba5acdf | 1268 | if (sel->nkeys) { |
6b1ac654 | 1269 | int i; |
32a121cb | 1270 | |
dd0c8d19 | 1271 | for (i = 0; i < sel->nkeys; i++) { |
1750abe2 | 1272 | show_keys(f, sel->keys + i); |
d81b135b | 1273 | if (show_stats && NULL != pf) |
6b1ac654 | 1274 | fprintf(f, " (success %llu ) ", |
b906243b | 1275 | (unsigned long long) pf->kcnts[i]); |
2373fde9 | 1276 | } |
aba5acdf SH |
1277 | } |
1278 | ||
40eb737e | 1279 | if (sel->flags & (TC_U32_VAROFFSET | TC_U32_OFFSET)) { |
aba5acdf | 1280 | fprintf(f, "\n offset "); |
40eb737e | 1281 | if (sel->flags & TC_U32_VAROFFSET) |
e62077d0 SH |
1282 | fprintf(f, "%04x>>%d at %d ", |
1283 | ntohs(sel->offmask), | |
1284 | sel->offshift, sel->offoff); | |
aba5acdf SH |
1285 | if (sel->off) |
1286 | fprintf(f, "plus %d ", sel->off); | |
1287 | } | |
40eb737e | 1288 | if (sel->flags & TC_U32_EAT) |
aba5acdf SH |
1289 | fprintf(f, " eat "); |
1290 | ||
1291 | if (sel->hmask) { | |
1292 | fprintf(f, "\n hash mask %08x at %d ", | |
1293 | (unsigned int)htonl(sel->hmask), sel->hoff); | |
1294 | } | |
1295 | } | |
1296 | ||
2373fde9 SH |
1297 | if (tb[TCA_U32_POLICE]) { |
1298 | fprintf(f, "\n"); | |
1299 | tc_print_police(f, tb[TCA_U32_POLICE]); | |
1300 | } | |
1301 | if (tb[TCA_U32_INDEV]) { | |
1302 | struct rtattr *idev = tb[TCA_U32_INDEV]; | |
32a121cb | 1303 | |
ff24746c | 1304 | fprintf(f, "\n input dev %s\n", rta_getattr_str(idev)); |
2373fde9 SH |
1305 | } |
1306 | if (tb[TCA_U32_ACT]) { | |
1307 | tc_print_action(f, tb[TCA_U32_ACT]); | |
1308 | } | |
1309 | ||
aba5acdf SH |
1310 | return 0; |
1311 | } | |
1312 | ||
6b7dff17 SH |
1313 | struct filter_util u32_filter_util = { |
1314 | .id = "u32", | |
1315 | .parse_fopt = u32_parse_opt, | |
1316 | .print_fopt = u32_print_opt, | |
aba5acdf | 1317 | }; |