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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> | |
aba5acdf SH |
17 | #include <fcntl.h> |
18 | #include <sys/socket.h> | |
19 | #include <netinet/in.h> | |
20 | #include <arpa/inet.h> | |
21 | #include <string.h> | |
2373fde9 | 22 | #include <linux/if.h> |
1750abe2 | 23 | #include <linux/if_ether.h> |
aba5acdf SH |
24 | |
25 | #include "utils.h" | |
26 | #include "tc_util.h" | |
27 | ||
28 | static void explain(void) | |
29 | { | |
62281205 SH |
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" | |
fb12cea8 | 34 | " [ sample SAMPLE ] [skip_hw | skip_sw]\n" |
62281205 SH |
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"); | |
aba5acdf SH |
42 | } |
43 | ||
d1f28cf1 | 44 | static int get_u32_handle(__u32 *handle, const char *str) |
aba5acdf | 45 | { |
dd0c8d19 | 46 | __u32 htid = 0, hash = 0, nodeid = 0; |
aba5acdf SH |
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; | |
dd0c8d19 | 57 | if (htid >= 0x1000) |
aba5acdf SH |
58 | return -1; |
59 | if (*tmp) { | |
40eb737e | 60 | str = tmp + 1; |
aba5acdf SH |
61 | hash = strtoul(str, &tmp, 16); |
62 | if (tmp == str && *str != ':' && *str != 0) | |
63 | return -1; | |
dd0c8d19 | 64 | if (hash >= 0x100) |
aba5acdf SH |
65 | return -1; |
66 | if (*tmp) { | |
40eb737e | 67 | str = tmp + 1; |
aba5acdf SH |
68 | nodeid = strtoul(str, &tmp, 16); |
69 | if (tmp == str && *str != 0) | |
70 | return -1; | |
dd0c8d19 | 71 | if (nodeid >= 0x1000) |
aba5acdf SH |
72 | return -1; |
73 | } | |
74 | } | |
75 | *handle = (htid<<20)|(hash<<12)|nodeid; | |
76 | return 0; | |
77 | } | |
78 | ||
725f2a87 | 79 | static char *sprint_u32_handle(__u32 handle, char *buf) |
aba5acdf SH |
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); | |
32a121cb | 93 | |
aba5acdf SH |
94 | bsize -= l; |
95 | b += l; | |
96 | } | |
97 | if (nodeid|hash) { | |
98 | if (hash) { | |
99 | int l = snprintf(b, bsize, "%x", hash); | |
32a121cb | 100 | |
aba5acdf SH |
101 | bsize -= l; |
102 | b += l; | |
103 | } | |
104 | if (nodeid) { | |
105 | int l = snprintf(b, bsize, ":%x", nodeid); | |
32a121cb | 106 | |
aba5acdf SH |
107 | bsize -= l; |
108 | b += l; | |
109 | } | |
110 | } | |
111 | if (show_raw) | |
112 | snprintf(b, bsize, "[%08x] ", handle); | |
113 | return buf; | |
114 | } | |
115 | ||
e62077d0 SH |
116 | static int pack_key(struct tc_u32_sel *sel, __u32 key, __u32 mask, |
117 | int off, int offmask) | |
aba5acdf SH |
118 | { |
119 | int i; | |
120 | int hwm = sel->nkeys; | |
121 | ||
122 | key &= mask; | |
123 | ||
dd0c8d19 | 124 | for (i = 0; i < hwm; i++) { |
aba5acdf | 125 | if (sel->keys[i].off == off && sel->keys[i].offmask == offmask) { |
40eb737e | 126 | __u32 intersect = mask & sel->keys[i].mask; |
aba5acdf | 127 | |
40eb737e | 128 | if ((key ^ sel->keys[i].val) & intersect) |
aba5acdf SH |
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 | ||
e62077d0 SH |
148 | static int pack_key32(struct tc_u32_sel *sel, __u32 key, __u32 mask, |
149 | int off, int offmask) | |
aba5acdf SH |
150 | { |
151 | key = htonl(key); | |
152 | mask = htonl(mask); | |
153 | return pack_key(sel, key, mask, off, offmask); | |
154 | } | |
155 | ||
e62077d0 SH |
156 | static int pack_key16(struct tc_u32_sel *sel, __u32 key, __u32 mask, |
157 | int off, int offmask) | |
aba5acdf SH |
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 | ||
82e6efe2 JHS |
173 | static int pack_key8(struct tc_u32_sel *sel, __u32 key, __u32 mask, int off, |
174 | int offmask) | |
aba5acdf SH |
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 | ||
d1f28cf1 | 197 | static int parse_at(int *argc_p, char ***argv_p, int *off, int *offmask) |
aba5acdf SH |
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 | ||
e62077d0 SH |
226 | static int parse_u32(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, |
227 | int off, int offmask) | |
aba5acdf SH |
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 | ||
e62077d0 SH |
258 | static int parse_u16(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, |
259 | int off, int offmask) | |
aba5acdf SH |
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 | ||
e62077d0 SH |
289 | static int parse_u8(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, |
290 | int off, int offmask) | |
aba5acdf SH |
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 | ||
e62077d0 SH |
324 | static int parse_ip_addr(int *argc_p, char ***argv_p, struct tc_u32_sel *sel, |
325 | int off) | |
aba5acdf SH |
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) | |
40eb737e | 349 | mask = htonl(0xFFFFFFFF << (32 - addr.bitlen)); |
aba5acdf SH |
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 | ||
e62077d0 SH |
359 | static int parse_ip6_addr(int *argc_p, char ***argv_p, |
360 | struct tc_u32_sel *sel, int off) | |
aba5acdf SH |
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; | |
40eb737e | 384 | for (i = 0; i < plen; i += 32) { |
73451259 | 385 | if (i + 31 < plen) { |
40eb737e PS |
386 | res = pack_key(sel, addr.data[i / 32], |
387 | 0xFFFFFFFF, off + 4 * (i / 32), offmask); | |
e62077d0 | 388 | if (res < 0) |
aba5acdf | 389 | return -1; |
e62077d0 | 390 | } else if (i < plen) { |
40eb737e | 391 | __u32 mask = htonl(0xFFFFFFFF << (32 - (plen - i))); |
32a121cb | 392 | |
40eb737e PS |
393 | res = pack_key(sel, addr.data[i / 32], |
394 | mask, off + 4 * (i / 32), offmask); | |
e62077d0 | 395 | if (res < 0) |
aba5acdf SH |
396 | return -1; |
397 | } | |
398 | } | |
399 | res = 0; | |
400 | ||
401 | *argc_p = argc; | |
402 | *argv_p = argv; | |
403 | return res; | |
404 | } | |
405 | ||
01564122 PL |
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 | ||
d7ac9ad4 SH |
435 | res = pack_key(sel, key, mask, off, offmask); |
436 | if (res < 0) | |
01564122 PL |
437 | return -1; |
438 | ||
439 | *argc_p = argc; | |
440 | *argv_p = argv; | |
441 | return 0; | |
442 | } | |
443 | ||
b4d41f41 SH |
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; | |
b4d41f41 SH |
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 | ||
e3d153c1 SH |
472 | for (i = 0; i < 6; i++) { |
473 | res = pack_key8(sel, addr[i], 0xFF, off + i, offmask); | |
b4d41f41 SH |
474 | if (res < 0) |
475 | return -1; | |
476 | } | |
477 | ||
478 | *argc_p = argc; | |
479 | *argv_p = argv; | |
480 | return res; | |
481 | } | |
482 | ||
aba5acdf SH |
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); | |
9fce67dd | 495 | } else if (strcmp(*argv, "dst") == 0) { |
aba5acdf SH |
496 | NEXT_ARG(); |
497 | res = parse_ip_addr(&argc, &argv, sel, 16); | |
9fce67dd | 498 | } else if (strcmp(*argv, "tos") == 0 || |
40eb737e PS |
499 | matches(*argv, "dsfield") == 0 || |
500 | matches(*argv, "precedence") == 0) { | |
aba5acdf SH |
501 | NEXT_ARG(); |
502 | res = parse_u8(&argc, &argv, sel, 1, 0); | |
9fce67dd | 503 | } else if (strcmp(*argv, "ihl") == 0) { |
aba5acdf SH |
504 | NEXT_ARG(); |
505 | res = parse_u8(&argc, &argv, sel, 0, 0); | |
9fce67dd | 506 | } else if (strcmp(*argv, "protocol") == 0) { |
aba5acdf SH |
507 | NEXT_ARG(); |
508 | res = parse_u8(&argc, &argv, sel, 9, 0); | |
9fce67dd | 509 | } else if (strcmp(*argv, "nofrag") == 0) { |
aba5acdf SH |
510 | argc--; argv++; |
511 | res = pack_key16(sel, 0, 0x3FFF, 6, 0); | |
9fce67dd | 512 | } else if (strcmp(*argv, "firstfrag") == 0) { |
aba5acdf | 513 | argc--; argv++; |
690b11f4 | 514 | res = pack_key16(sel, 0x2000, 0x3FFF, 6, 0); |
9fce67dd | 515 | } else if (strcmp(*argv, "df") == 0) { |
aba5acdf SH |
516 | argc--; argv++; |
517 | res = pack_key16(sel, 0x4000, 0x4000, 6, 0); | |
9fce67dd | 518 | } else if (strcmp(*argv, "mf") == 0) { |
aba5acdf SH |
519 | argc--; argv++; |
520 | res = pack_key16(sel, 0x2000, 0x2000, 6, 0); | |
9fce67dd | 521 | } else if (strcmp(*argv, "dport") == 0) { |
aba5acdf SH |
522 | NEXT_ARG(); |
523 | res = parse_u16(&argc, &argv, sel, 22, 0); | |
9fce67dd | 524 | } else if (strcmp(*argv, "sport") == 0) { |
aba5acdf SH |
525 | NEXT_ARG(); |
526 | res = parse_u16(&argc, &argv, sel, 20, 0); | |
9fce67dd | 527 | } else if (strcmp(*argv, "icmp_type") == 0) { |
aba5acdf SH |
528 | NEXT_ARG(); |
529 | res = parse_u8(&argc, &argv, sel, 20, 0); | |
9fce67dd | 530 | } else if (strcmp(*argv, "icmp_code") == 0) { |
aba5acdf | 531 | NEXT_ARG(); |
1d62f99f | 532 | res = parse_u8(&argc, &argv, sel, 21, 0); |
9fce67dd SH |
533 | } else |
534 | return -1; | |
aba5acdf | 535 | |
aba5acdf SH |
536 | *argc_p = argc; |
537 | *argv_p = argv; | |
538 | return res; | |
539 | } | |
3d0b7439 | 540 | |
aba5acdf SH |
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); | |
9fce67dd | 553 | } else if (strcmp(*argv, "dst") == 0) { |
aba5acdf SH |
554 | NEXT_ARG(); |
555 | res = parse_ip6_addr(&argc, &argv, sel, 24); | |
9fce67dd | 556 | } else if (strcmp(*argv, "priority") == 0) { |
aba5acdf | 557 | NEXT_ARG(); |
01564122 | 558 | res = parse_ip6_class(&argc, &argv, sel); |
9fce67dd | 559 | } else if (strcmp(*argv, "protocol") == 0) { |
aba5acdf SH |
560 | NEXT_ARG(); |
561 | res = parse_u8(&argc, &argv, sel, 6, 0); | |
9fce67dd | 562 | } else if (strcmp(*argv, "flowlabel") == 0) { |
aba5acdf SH |
563 | NEXT_ARG(); |
564 | res = parse_u32(&argc, &argv, sel, 0, 0); | |
9fce67dd | 565 | } else if (strcmp(*argv, "dport") == 0) { |
aba5acdf SH |
566 | NEXT_ARG(); |
567 | res = parse_u16(&argc, &argv, sel, 42, 0); | |
9fce67dd | 568 | } else if (strcmp(*argv, "sport") == 0) { |
aba5acdf SH |
569 | NEXT_ARG(); |
570 | res = parse_u16(&argc, &argv, sel, 40, 0); | |
9fce67dd | 571 | } else if (strcmp(*argv, "icmp_type") == 0) { |
aba5acdf SH |
572 | NEXT_ARG(); |
573 | res = parse_u8(&argc, &argv, sel, 40, 0); | |
9fce67dd | 574 | } else if (strcmp(*argv, "icmp_code") == 0) { |
aba5acdf SH |
575 | NEXT_ARG(); |
576 | res = parse_u8(&argc, &argv, sel, 41, 1); | |
9fce67dd SH |
577 | } else |
578 | return -1; | |
aba5acdf | 579 | |
aba5acdf SH |
580 | *argc_p = argc; |
581 | *argv_p = argv; | |
582 | return res; | |
583 | } | |
584 | ||
b4d41f41 SH |
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 | ||
aba5acdf SH |
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); | |
9fce67dd | 623 | } else if (strcmp(*argv, "dst") == 0) { |
aba5acdf SH |
624 | NEXT_ARG(); |
625 | res = parse_u16(&argc, &argv, sel, 2, -1); | |
9fce67dd SH |
626 | } else |
627 | return -1; | |
aba5acdf | 628 | |
aba5acdf SH |
629 | *argc_p = argc; |
630 | *argv_p = argv; | |
631 | return res; | |
632 | } | |
633 | ||
6b1ac654 | 634 | |
aba5acdf SH |
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); | |
9fce67dd | 647 | } else if (strcmp(*argv, "code") == 0) { |
aba5acdf SH |
648 | NEXT_ARG(); |
649 | res = parse_u8(&argc, &argv, sel, 1, -1); | |
9fce67dd SH |
650 | } else |
651 | return -1; | |
aba5acdf | 652 | |
aba5acdf SH |
653 | *argc_p = argc; |
654 | *argv_p = argv; | |
655 | return res; | |
656 | } | |
657 | ||
6f0ba88b | 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 | } | |
aba5acdf | 684 | |
6f0ba88b | 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 | } | |
aba5acdf | 692 | |
e62077d0 SH |
693 | static int parse_selector(int *argc_p, char ***argv_p, |
694 | struct tc_u32_sel *sel, struct nlmsghdr *n) | |
aba5acdf SH |
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); | |
9fce67dd | 706 | } else if (matches(*argv, "u16") == 0) { |
aba5acdf SH |
707 | NEXT_ARG(); |
708 | res = parse_u16(&argc, &argv, sel, 0, 0); | |
9fce67dd | 709 | } else if (matches(*argv, "u8") == 0) { |
aba5acdf SH |
710 | NEXT_ARG(); |
711 | res = parse_u8(&argc, &argv, sel, 0, 0); | |
9fce67dd | 712 | } else if (matches(*argv, "ip") == 0) { |
aba5acdf SH |
713 | NEXT_ARG(); |
714 | res = parse_ip(&argc, &argv, sel); | |
32a121cb | 715 | } else if (matches(*argv, "ip6") == 0) { |
aba5acdf SH |
716 | NEXT_ARG(); |
717 | res = parse_ip6(&argc, &argv, sel); | |
9fce67dd | 718 | } else if (matches(*argv, "udp") == 0) { |
aba5acdf SH |
719 | NEXT_ARG(); |
720 | res = parse_udp(&argc, &argv, sel); | |
9fce67dd | 721 | } else if (matches(*argv, "tcp") == 0) { |
aba5acdf SH |
722 | NEXT_ARG(); |
723 | res = parse_tcp(&argc, &argv, sel); | |
9fce67dd | 724 | } else if (matches(*argv, "icmp") == 0) { |
aba5acdf SH |
725 | NEXT_ARG(); |
726 | res = parse_icmp(&argc, &argv, sel); | |
9fce67dd | 727 | } else if (matches(*argv, "mark") == 0) { |
6f0ba88b | 728 | NEXT_ARG(); |
729 | res = parse_mark(&argc, &argv, n); | |
b4d41f41 SH |
730 | } else if (matches(*argv, "ether") == 0) { |
731 | NEXT_ARG(); | |
732 | res = parse_ether(&argc, &argv, sel); | |
3d0b7439 | 733 | } else |
9fce67dd | 734 | return -1; |
aba5acdf | 735 | |
aba5acdf SH |
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; | |
32a121cb | 749 | |
aba5acdf SH |
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; | |
32a121cb | 757 | |
aba5acdf SH |
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) { | |
aba5acdf | 768 | NEXT_ARG(); |
9f7401fa | 769 | if (get_be16(&sel->offmask, *argv, 16)) |
aba5acdf | 770 | return -1; |
aba5acdf SH |
771 | sel->flags |= TC_U32_VAROFFSET; |
772 | } else if (matches(*argv, "shift") == 0) { | |
773 | int shift; | |
32a121cb | 774 | |
aba5acdf SH |
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) { | |
aba5acdf | 800 | NEXT_ARG(); |
9f7401fa | 801 | if (get_be32(&sel->hmask, *argv, 16)) |
aba5acdf | 802 | return -1; |
aba5acdf SH |
803 | } else if (matches(*argv, "at") == 0) { |
804 | int num; | |
32a121cb | 805 | |
aba5acdf SH |
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 | ||
1750abe2 | 823 | static void print_ipv4(FILE *f, const struct tc_u32_key *key) |
6b1ac654 SH |
824 | { |
825 | char abuf[256]; | |
826 | ||
6b1ac654 | 827 | switch (key->off) { |
4c9ffc2f SH |
828 | case 0: |
829 | switch (ntohl(key->mask)) { | |
830 | case 0x0f000000: | |
82e6efe2 JHS |
831 | fprintf(f, "\n match IP ihl %u", |
832 | ntohl(key->val) >> 24); | |
4c9ffc2f SH |
833 | return; |
834 | case 0x00ff0000: | |
82e6efe2 JHS |
835 | fprintf(f, "\n match IP dsfield %#x", |
836 | ntohl(key->val) >> 16); | |
4c9ffc2f SH |
837 | return; |
838 | } | |
839 | break; | |
840 | case 8: | |
841 | if (ntohl(key->mask) == 0x00ff0000) { | |
82e6efe2 JHS |
842 | fprintf(f, "\n match IP protocol %d", |
843 | ntohl(key->val) >> 16); | |
4c9ffc2f SH |
844 | return; |
845 | } | |
846 | break; | |
6b1ac654 SH |
847 | case 12: |
848 | case 16: { | |
849 | int bits = mask2bits(key->mask); | |
32a121cb | 850 | |
6b1ac654 | 851 | if (bits >= 0) { |
3d0b7439 | 852 | fprintf(f, "\n %s %s/%d", |
1750abe2 | 853 | key->off == 12 ? "match IP src" : "match IP dst", |
e62077d0 SH |
854 | inet_ntop(AF_INET, &key->val, |
855 | abuf, sizeof(abuf)), | |
6b1ac654 SH |
856 | bits); |
857 | return; | |
858 | } | |
859 | } | |
860 | break; | |
861 | ||
862 | case 20: | |
4c9ffc2f SH |
863 | switch (ntohl(key->mask)) { |
864 | case 0x0000ffff: | |
bcd7abdd | 865 | fprintf(f, "\n match dport %u", |
4c9ffc2f SH |
866 | ntohl(key->val) & 0xffff); |
867 | return; | |
868 | case 0xffff0000: | |
bcd7abdd | 869 | fprintf(f, "\n match sport %u", |
4c9ffc2f SH |
870 | ntohl(key->val) >> 16); |
871 | return; | |
872 | case 0xffffffff: | |
bcd7abdd | 873 | fprintf(f, "\n match dport %u, match sport %u", |
4c9ffc2f SH |
874 | ntohl(key->val) & 0xffff, |
875 | ntohl(key->val) >> 16); | |
876 | ||
6b1ac654 SH |
877 | return; |
878 | } | |
1750abe2 | 879 | /* XXX: Default print_raw */ |
6b1ac654 | 880 | } |
1750abe2 | 881 | } |
6b1ac654 | 882 | |
d13cee6d SH |
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: | |
82e6efe2 JHS |
891 | fprintf(f, "\n match IP ihl %u", |
892 | ntohl(key->val) >> 24); | |
d13cee6d SH |
893 | return; |
894 | case 0x00ff0000: | |
82e6efe2 JHS |
895 | fprintf(f, "\n match IP dsfield %#x", |
896 | ntohl(key->val) >> 16); | |
d13cee6d SH |
897 | return; |
898 | } | |
899 | break; | |
900 | case 8: | |
901 | if (ntohl(key->mask) == 0x00ff0000) { | |
82e6efe2 JHS |
902 | fprintf(f, "\n match IP protocol %d", |
903 | ntohl(key->val) >> 16); | |
d13cee6d SH |
904 | return; |
905 | } | |
906 | break; | |
907 | case 12: | |
908 | case 16: { | |
909 | int bits = mask2bits(key->mask); | |
32a121cb | 910 | |
d13cee6d | 911 | if (bits >= 0) { |
3d0b7439 | 912 | fprintf(f, "\n %s %s/%d", |
d13cee6d SH |
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 | ||
1750abe2 | 943 | static void print_raw(FILE *f, const struct tc_u32_key *key) |
944 | { | |
3d0b7439 | 945 | fprintf(f, "\n match %08x/%08x at %s%d", |
6b1ac654 SH |
946 | (unsigned int)ntohl(key->val), |
947 | (unsigned int)ntohl(key->mask), | |
948 | key->offmask ? "nexthdr+" : "", | |
949 | key->off); | |
950 | } | |
951 | ||
1750abe2 | 952 | static const struct { |
953 | __u16 proto; | |
954 | __u16 pad; | |
955 | void (*pprinter)(FILE *f, const struct tc_u32_key *key); | |
956 | } u32_pprinters[] = { | |
32a121cb | 957 | {0, 0, print_raw}, |
1750abe2 | 958 | {ETH_P_IP, 0, print_ipv4}, |
d13cee6d | 959 | {ETH_P_IPV6, 0, print_ipv6}, |
1750abe2 | 960 | }; |
961 | ||
962 | static void show_keys(FILE *f, const struct tc_u32_key *key) | |
963 | { | |
964 | int i = 0; | |
965 | ||
54336567 | 966 | if (!pretty) |
1750abe2 | 967 | goto show_k; |
968 | ||
32a121cb | 969 | for (i = 0; i < ARRAY_SIZE(u32_pprinters); i++) { |
1750abe2 | 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, | |
6b1ac654 | 982 | int argc, char **argv, struct nlmsghdr *n) |
aba5acdf SH |
983 | { |
984 | struct { | |
985 | struct tc_u32_sel sel; | |
986 | struct tc_u32_key keys[128]; | |
d17b136f | 987 | } sel = {}; |
aba5acdf SH |
988 | struct tcmsg *t = NLMSG_DATA(n); |
989 | struct rtattr *tail; | |
dcf13497 | 990 | int sel_ok = 0, terminal_ok = 0; |
aba5acdf SH |
991 | int sample_ok = 0; |
992 | __u32 htid = 0; | |
993 | __u32 order = 0; | |
5e5b3008 | 994 | __u32 flags = 0; |
aba5acdf | 995 | |
aba5acdf SH |
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 | ||
c14f9d92 | 1004 | tail = addattr_nest(n, MAX_MSG, TCA_OPTIONS); |
aba5acdf SH |
1005 | |
1006 | while (argc > 0) { | |
1007 | if (matches(*argv, "match") == 0) { | |
1008 | NEXT_ARG(); | |
6f0ba88b | 1009 | if (parse_selector(&argc, &argv, &sel.sel, n)) { |
aba5acdf SH |
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) { | |
82e6efe2 | 1031 | unsigned int flowid; |
32a121cb | 1032 | |
aba5acdf | 1033 | NEXT_ARG(); |
82e6efe2 | 1034 | if (get_tc_classid(&flowid, *argv)) { |
aba5acdf SH |
1035 | fprintf(stderr, "Illegal \"classid\"\n"); |
1036 | return -1; | |
1037 | } | |
82e6efe2 | 1038 | addattr_l(n, MAX_MSG, TCA_U32_CLASSID, &flowid, 4); |
aba5acdf SH |
1039 | sel.sel.flags |= TC_U32_TERMINAL; |
1040 | } else if (matches(*argv, "divisor") == 0) { | |
32a121cb SH |
1041 | unsigned int divisor; |
1042 | ||
aba5acdf | 1043 | NEXT_ARG(); |
ae665a52 | 1044 | if (get_unsigned(&divisor, *argv, 0) || |
46b67dab SH |
1045 | divisor == 0 || |
1046 | divisor > 0x100 || ((divisor - 1) & divisor)) { | |
aba5acdf SH |
1047 | fprintf(stderr, "Illegal \"divisor\"\n"); |
1048 | return -1; | |
1049 | } | |
2373fde9 | 1050 | addattr_l(n, MAX_MSG, TCA_U32_DIVISOR, &divisor, 4); |
aba5acdf SH |
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) { | |
82e6efe2 | 1058 | unsigned int linkid; |
32a121cb | 1059 | |
aba5acdf | 1060 | NEXT_ARG(); |
82e6efe2 | 1061 | if (get_u32_handle(&linkid, *argv)) { |
aba5acdf SH |
1062 | fprintf(stderr, "Illegal \"link\"\n"); |
1063 | return -1; | |
1064 | } | |
82e6efe2 | 1065 | if (linkid && TC_U32_NODE(linkid)) { |
aba5acdf SH |
1066 | fprintf(stderr, "\"link\" must be a hash table.\n"); |
1067 | return -1; | |
1068 | } | |
58d93d00 | 1069 | addattr_l(n, MAX_MSG, TCA_U32_LINK, &linkid, 4); |
aba5acdf | 1070 | } else if (strcmp(*argv, "ht") == 0) { |
82e6efe2 | 1071 | unsigned int ht; |
32a121cb | 1072 | |
aba5acdf | 1073 | NEXT_ARG(); |
82e6efe2 | 1074 | if (get_u32_handle(&ht, *argv)) { |
aba5acdf SH |
1075 | fprintf(stderr, "Illegal \"ht\"\n"); |
1076 | return -1; | |
1077 | } | |
82e6efe2 | 1078 | if (handle && TC_U32_NODE(ht)) { |
aba5acdf SH |
1079 | fprintf(stderr, "\"ht\" must be a hash table.\n"); |
1080 | return -1; | |
1081 | } | |
1082 | if (sample_ok) | |
82e6efe2 | 1083 | htid = (htid & 0xFF000) | (ht & 0xFFF00000); |
aba5acdf | 1084 | else |
82e6efe2 | 1085 | htid = (ht & 0xFFFFF000); |
aba5acdf SH |
1086 | } else if (strcmp(*argv, "sample") == 0) { |
1087 | __u32 hash; | |
32a121cb | 1088 | unsigned int divisor = 0x100; |
aba5acdf SH |
1089 | struct { |
1090 | struct tc_u32_sel sel; | |
1091 | struct tc_u32_key keys[4]; | |
d17b136f PS |
1092 | } sel2 = {}; |
1093 | ||
aba5acdf | 1094 | NEXT_ARG(); |
6f0ba88b | 1095 | if (parse_selector(&argc, &argv, &sel2.sel, n)) { |
aba5acdf SH |
1096 | fprintf(stderr, "Illegal \"sample\"\n"); |
1097 | return -1; | |
1098 | } | |
1099 | if (sel2.sel.nkeys != 1) { | |
32a121cb | 1100 | fprintf(stderr, "\"sample\" must contain exactly ONE key.\n"); |
aba5acdf SH |
1101 | return -1; |
1102 | } | |
3925ad81 SH |
1103 | if (*argv != 0 && strcmp(*argv, "divisor") == 0) { |
1104 | NEXT_ARG(); | |
82e6efe2 JHS |
1105 | if (get_unsigned(&divisor, *argv, 0) || |
1106 | divisor == 0 || divisor > 0x100 || | |
1107 | ((divisor - 1) & divisor)) { | |
3925ad81 SH |
1108 | fprintf(stderr, "Illegal sample \"divisor\"\n"); |
1109 | return -1; | |
1110 | } | |
1111 | NEXT_ARG(); | |
1112 | } | |
40eb737e PS |
1113 | hash = sel2.sel.keys[0].val & sel2.sel.keys[0].mask; |
1114 | hash ^= hash >> 16; | |
1115 | hash ^= hash >> 8; | |
1116 | htid = ((hash % divisor) << 12) | (htid & 0xFFF00000); | |
aba5acdf SH |
1117 | sample_ok = 1; |
1118 | continue; | |
2373fde9 | 1119 | } else if (strcmp(*argv, "indev") == 0) { |
d17b136f | 1120 | char ind[IFNAMSIZ + 1] = {}; |
32a121cb | 1121 | |
2373fde9 SH |
1122 | argc--; |
1123 | argv++; | |
1124 | if (argc < 1) { | |
1125 | fprintf(stderr, "Illegal indev\n"); | |
1126 | return -1; | |
1127 | } | |
725f2a87 | 1128 | strncpy(ind, *argv, sizeof(ind) - 1); |
82e6efe2 JHS |
1129 | addattr_l(n, MAX_MSG, TCA_U32_INDEV, ind, |
1130 | strlen(ind) + 1); | |
d81b135b | 1131 | |
2373fde9 SH |
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 | } | |
dcf13497 | 1138 | terminal_ok++; |
2373fde9 | 1139 | continue; |
d81b135b | 1140 | |
aba5acdf SH |
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 | } | |
dcf13497 | 1147 | terminal_ok++; |
aba5acdf | 1148 | continue; |
5e5b3008 | 1149 | } else if (strcmp(*argv, "skip_hw") == 0) { |
5e5b3008 | 1150 | flags |= TCA_CLS_FLAGS_SKIP_HW; |
5e5b3008 | 1151 | } else if (strcmp(*argv, "skip_sw") == 0) { |
5e5b3008 | 1152 | flags |= TCA_CLS_FLAGS_SKIP_SW; |
aba5acdf SH |
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 | ||
f5a398bf | 1164 | /* We don't necessarily need class/flowids */ |
81c61790 | 1165 | if (terminal_ok) |
dcf13497 | 1166 | sel.sel.flags |= TC_U32_TERMINAL; |
3d0b7439 | 1167 | |
aba5acdf | 1168 | if (order) { |
82e6efe2 JHS |
1169 | if (TC_U32_NODE(t->tcm_handle) && |
1170 | order != TC_U32_NODE(t->tcm_handle)) { | |
aba5acdf SH |
1171 | fprintf(stderr, "\"order\" contradicts \"handle\"\n"); |
1172 | return -1; | |
1173 | } | |
1174 | t->tcm_handle |= order; | |
1175 | } | |
1176 | ||
1177 | if (htid) | |
2373fde9 | 1178 | addattr_l(n, MAX_MSG, TCA_U32_HASH, &htid, 4); |
aba5acdf | 1179 | if (sel_ok) |
3d0b7439 | 1180 | addattr_l(n, MAX_MSG, TCA_U32_SEL, &sel, |
82e6efe2 JHS |
1181 | sizeof(sel.sel) + |
1182 | sel.sel.nkeys * sizeof(struct tc_u32_key)); | |
5e5b3008 | 1183 | if (flags) { |
62281205 SH |
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"); | |
5e5b3008 SS |
1188 | return -1; |
1189 | } | |
1190 | addattr_l(n, MAX_MSG, TCA_U32_FLAGS, &flags, 4); | |
1191 | } | |
1192 | ||
c14f9d92 | 1193 | addattr_nest_end(n, tail); |
aba5acdf SH |
1194 | return 0; |
1195 | } | |
1196 | ||
6b1ac654 SH |
1197 | static int u32_print_opt(struct filter_util *qu, FILE *f, struct rtattr *opt, |
1198 | __u32 handle) | |
aba5acdf | 1199 | { |
40eb737e | 1200 | struct rtattr *tb[TCA_U32_MAX + 1]; |
aba5acdf | 1201 | struct tc_u32_sel *sel = NULL; |
d81b135b | 1202 | struct tc_u32_pcnt *pf = NULL; |
aba5acdf SH |
1203 | |
1204 | if (opt == NULL) | |
1205 | return 0; | |
1206 | ||
ac2fc2df | 1207 | parse_rtattr_nested(tb, TCA_U32_MAX, opt); |
aba5acdf SH |
1208 | |
1209 | if (handle) { | |
1210 | SPRINT_BUF(b1); | |
1211 | fprintf(f, "fh %s ", sprint_u32_handle(handle, b1)); | |
1212 | } | |
62281205 SH |
1213 | |
1214 | if (TC_U32_NODE(handle)) | |
aba5acdf | 1215 | fprintf(f, "order %d ", TC_U32_NODE(handle)); |
aba5acdf SH |
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]) { | |
82e6efe2 JHS |
1225 | fprintf(f, "ht divisor %d ", |
1226 | rta_getattr_u32(tb[TCA_U32_DIVISOR])); | |
aba5acdf | 1227 | } else if (tb[TCA_U32_HASH]) { |
ff24746c | 1228 | __u32 htid = rta_getattr_u32(tb[TCA_U32_HASH]); |
32a121cb | 1229 | |
e62077d0 SH |
1230 | fprintf(f, "key ht %x bkt %x ", TC_U32_USERHTID(htid), |
1231 | TC_U32_HASH(htid)); | |
aba5acdf SH |
1232 | } else { |
1233 | fprintf(f, "??? "); | |
1234 | } | |
1235 | if (tb[TCA_U32_CLASSID]) { | |
1236 | SPRINT_BUF(b1); | |
1237 | fprintf(f, "%sflowid %s ", | |
40eb737e | 1238 | !sel || !(sel->flags & TC_U32_TERMINAL) ? "*" : "", |
82e6efe2 JHS |
1239 | sprint_tc_classid(rta_getattr_u32(tb[TCA_U32_CLASSID]), |
1240 | b1)); | |
40eb737e | 1241 | } else if (sel && sel->flags & TC_U32_TERMINAL) { |
aba5acdf SH |
1242 | fprintf(f, "terminal flowid ??? "); |
1243 | } | |
1244 | if (tb[TCA_U32_LINK]) { | |
1245 | SPRINT_BUF(b1); | |
e62077d0 | 1246 | fprintf(f, "link %s ", |
82e6efe2 JHS |
1247 | sprint_u32_handle(rta_getattr_u32(tb[TCA_U32_LINK]), |
1248 | b1)); | |
aba5acdf | 1249 | } |
2373fde9 | 1250 | |
5e5b3008 SS |
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 "); | |
e57285b8 OG |
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 "); | |
5e5b3008 SS |
1263 | } |
1264 | ||
d81b135b | 1265 | if (tb[TCA_U32_PCNT]) { |
1266 | if (RTA_PAYLOAD(tb[TCA_U32_PCNT]) < sizeof(*pf)) { | |
32a121cb | 1267 | fprintf(f, "Broken perf counters\n"); |
d81b135b | 1268 | return -1; |
1269 | } | |
1270 | pf = RTA_DATA(tb[TCA_U32_PCNT]); | |
1271 | } | |
aba5acdf | 1272 | |
6f0ba88b | 1273 | if (sel && show_stats && NULL != pf) |
b906243b | 1274 | fprintf(f, " (rule hit %llu success %llu)", |
1275 | (unsigned long long) pf->rcnt, | |
1276 | (unsigned long long) pf->rhit); | |
6f0ba88b | 1277 | |
1278 | if (tb[TCA_U32_MARK]) { | |
1279 | struct tc_u32_mark *mark = RTA_DATA(tb[TCA_U32_MARK]); | |
32a121cb | 1280 | |
6f0ba88b | 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 | ||
aba5acdf | 1289 | if (sel) { |
aba5acdf | 1290 | if (sel->nkeys) { |
6b1ac654 | 1291 | int i; |
32a121cb | 1292 | |
dd0c8d19 | 1293 | for (i = 0; i < sel->nkeys; i++) { |
1750abe2 | 1294 | show_keys(f, sel->keys + i); |
d81b135b | 1295 | if (show_stats && NULL != pf) |
6b1ac654 | 1296 | fprintf(f, " (success %llu ) ", |
b906243b | 1297 | (unsigned long long) pf->kcnts[i]); |
2373fde9 | 1298 | } |
aba5acdf SH |
1299 | } |
1300 | ||
40eb737e | 1301 | if (sel->flags & (TC_U32_VAROFFSET | TC_U32_OFFSET)) { |
aba5acdf | 1302 | fprintf(f, "\n offset "); |
40eb737e | 1303 | if (sel->flags & TC_U32_VAROFFSET) |
e62077d0 SH |
1304 | fprintf(f, "%04x>>%d at %d ", |
1305 | ntohs(sel->offmask), | |
1306 | sel->offshift, sel->offoff); | |
aba5acdf SH |
1307 | if (sel->off) |
1308 | fprintf(f, "plus %d ", sel->off); | |
1309 | } | |
40eb737e | 1310 | if (sel->flags & TC_U32_EAT) |
aba5acdf SH |
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 | ||
2373fde9 SH |
1319 | if (tb[TCA_U32_POLICE]) { |
1320 | fprintf(f, "\n"); | |
1321 | tc_print_police(f, tb[TCA_U32_POLICE]); | |
1322 | } | |
62281205 | 1323 | |
2373fde9 SH |
1324 | if (tb[TCA_U32_INDEV]) { |
1325 | struct rtattr *idev = tb[TCA_U32_INDEV]; | |
32a121cb | 1326 | |
ff24746c | 1327 | fprintf(f, "\n input dev %s\n", rta_getattr_str(idev)); |
2373fde9 | 1328 | } |
62281205 SH |
1329 | |
1330 | if (tb[TCA_U32_ACT]) | |
9e713525 | 1331 | tc_print_action(f, tb[TCA_U32_ACT], 0); |
2373fde9 | 1332 | |
aba5acdf SH |
1333 | return 0; |
1334 | } | |
1335 | ||
6b7dff17 SH |
1336 | struct filter_util u32_filter_util = { |
1337 | .id = "u32", | |
1338 | .parse_fopt = u32_parse_opt, | |
1339 | .print_fopt = u32_print_opt, | |
aba5acdf | 1340 | }; |