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Commit | Line | Data |
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aba5acdf SH |
1 | /* |
2 | * tc.c "tc" utility frontend. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
10 | * | |
11 | * Fixes: | |
12 | * | |
13 | * Petri Mattila <petri@prihateam.fi> 990308: wrong memset's resulted in faults | |
14 | */ | |
15 | ||
16 | #include <stdio.h> | |
17 | #include <stdlib.h> | |
18 | #include <unistd.h> | |
aba5acdf SH |
19 | #include <fcntl.h> |
20 | #include <dlfcn.h> | |
21 | #include <sys/socket.h> | |
22 | #include <netinet/in.h> | |
23 | #include <arpa/inet.h> | |
24 | #include <string.h> | |
25 | #include <errno.h> | |
26 | ||
fbef6555 | 27 | #include "version.h" |
aba5acdf SH |
28 | #include "utils.h" |
29 | #include "tc_util.h" | |
30 | #include "tc_common.h" | |
67e1d73b | 31 | #include "namespace.h" |
31f45088 | 32 | #include "rt_names.h" |
aba5acdf | 33 | |
32a121cb SH |
34 | int show_stats; |
35 | int show_details; | |
36 | int show_raw; | |
32a121cb | 37 | int show_graph; |
32a6fbe5 | 38 | int timestamp; |
44dcfe82 | 39 | |
32a121cb | 40 | int batch_mode; |
32a121cb SH |
41 | int use_iec; |
42 | int force; | |
43 | bool use_names; | |
c91d262f | 44 | int json; |
2d165c08 | 45 | int color; |
6e8634eb | 46 | int oneline; |
477ca0df | 47 | int brief; |
4612d04d VK |
48 | |
49 | static char *conf_file; | |
50 | ||
7901660a | 51 | struct rtnl_handle rth; |
aba5acdf | 52 | |
32a121cb SH |
53 | static void *BODY; /* cached handle dlopen(NULL) */ |
54 | static struct qdisc_util *qdisc_list; | |
55 | static struct filter_util *filter_list; | |
aba5acdf | 56 | |
ae665a52 | 57 | static int print_noqopt(struct qdisc_util *qu, FILE *f, |
1798c9d5 | 58 | struct rtattr *opt) |
aba5acdf SH |
59 | { |
60 | if (opt && RTA_PAYLOAD(opt)) | |
ae665a52 | 61 | fprintf(f, "[Unknown qdisc, optlen=%u] ", |
32a121cb | 62 | (unsigned int) RTA_PAYLOAD(opt)); |
aba5acdf SH |
63 | return 0; |
64 | } | |
65 | ||
fec62c0e SH |
66 | static int parse_noqopt(struct qdisc_util *qu, int argc, char **argv, |
67 | struct nlmsghdr *n, const char *dev) | |
aba5acdf SH |
68 | { |
69 | if (argc) { | |
fec62c0e SH |
70 | fprintf(stderr, |
71 | "Unknown qdisc \"%s\", hence option \"%s\" is unparsable\n", | |
72 | qu->id, *argv); | |
aba5acdf SH |
73 | return -1; |
74 | } | |
75 | return 0; | |
76 | } | |
77 | ||
78 | static int print_nofopt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 fhandle) | |
79 | { | |
80 | if (opt && RTA_PAYLOAD(opt)) | |
ae665a52 | 81 | fprintf(f, "fh %08x [Unknown filter, optlen=%u] ", |
32a121cb | 82 | fhandle, (unsigned int) RTA_PAYLOAD(opt)); |
aba5acdf SH |
83 | else if (fhandle) |
84 | fprintf(f, "fh %08x ", fhandle); | |
85 | return 0; | |
86 | } | |
87 | ||
fec62c0e SH |
88 | static int parse_nofopt(struct filter_util *qu, char *fhandle, |
89 | int argc, char **argv, struct nlmsghdr *n) | |
aba5acdf SH |
90 | { |
91 | __u32 handle; | |
92 | ||
93 | if (argc) { | |
fec62c0e SH |
94 | fprintf(stderr, |
95 | "Unknown filter \"%s\", hence option \"%s\" is unparsable\n", | |
96 | qu->id, *argv); | |
aba5acdf SH |
97 | return -1; |
98 | } | |
99 | if (fhandle) { | |
100 | struct tcmsg *t = NLMSG_DATA(n); | |
32a121cb | 101 | |
aba5acdf SH |
102 | if (get_u32(&handle, fhandle, 16)) { |
103 | fprintf(stderr, "Unparsable filter ID \"%s\"\n", fhandle); | |
104 | return -1; | |
105 | } | |
106 | t->tcm_handle = handle; | |
107 | } | |
108 | return 0; | |
109 | } | |
110 | ||
4094db72 | 111 | struct qdisc_util *get_qdisc_kind(const char *str) |
aba5acdf SH |
112 | { |
113 | void *dlh; | |
114 | char buf[256]; | |
115 | struct qdisc_util *q; | |
116 | ||
117 | for (q = qdisc_list; q; q = q->next) | |
118 | if (strcmp(q->id, str) == 0) | |
119 | return q; | |
120 | ||
aa27f88c | 121 | snprintf(buf, sizeof(buf), "%s/q_%s.so", get_tc_lib(), str); |
aba5acdf | 122 | dlh = dlopen(buf, RTLD_LAZY); |
b7a45150 SH |
123 | if (!dlh) { |
124 | /* look in current binary, only open once */ | |
aba5acdf SH |
125 | dlh = BODY; |
126 | if (dlh == NULL) { | |
127 | dlh = BODY = dlopen(NULL, RTLD_LAZY); | |
128 | if (dlh == NULL) | |
129 | goto noexist; | |
130 | } | |
131 | } | |
132 | ||
95812b56 | 133 | snprintf(buf, sizeof(buf), "%s_qdisc_util", str); |
aba5acdf SH |
134 | q = dlsym(dlh, buf); |
135 | if (q == NULL) | |
136 | goto noexist; | |
137 | ||
138 | reg: | |
139 | q->next = qdisc_list; | |
140 | qdisc_list = q; | |
141 | return q; | |
142 | ||
143 | noexist: | |
f89bb021 | 144 | q = calloc(1, sizeof(*q)); |
aba5acdf | 145 | if (q) { |
f89bb021 | 146 | q->id = strdup(str); |
aba5acdf SH |
147 | q->parse_qopt = parse_noqopt; |
148 | q->print_qopt = print_noqopt; | |
149 | goto reg; | |
150 | } | |
151 | return q; | |
152 | } | |
153 | ||
154 | ||
4094db72 | 155 | struct filter_util *get_filter_kind(const char *str) |
aba5acdf SH |
156 | { |
157 | void *dlh; | |
158 | char buf[256]; | |
159 | struct filter_util *q; | |
160 | ||
161 | for (q = filter_list; q; q = q->next) | |
162 | if (strcmp(q->id, str) == 0) | |
163 | return q; | |
164 | ||
aa27f88c | 165 | snprintf(buf, sizeof(buf), "%s/f_%s.so", get_tc_lib(), str); |
aba5acdf SH |
166 | dlh = dlopen(buf, RTLD_LAZY); |
167 | if (dlh == NULL) { | |
168 | dlh = BODY; | |
169 | if (dlh == NULL) { | |
170 | dlh = BODY = dlopen(NULL, RTLD_LAZY); | |
171 | if (dlh == NULL) | |
172 | goto noexist; | |
173 | } | |
174 | } | |
175 | ||
95812b56 | 176 | snprintf(buf, sizeof(buf), "%s_filter_util", str); |
aba5acdf SH |
177 | q = dlsym(dlh, buf); |
178 | if (q == NULL) | |
179 | goto noexist; | |
180 | ||
181 | reg: | |
182 | q->next = filter_list; | |
183 | filter_list = q; | |
184 | return q; | |
aba5acdf | 185 | noexist: |
f89bb021 | 186 | q = calloc(1, sizeof(*q)); |
aba5acdf | 187 | if (q) { |
aba5acdf SH |
188 | strncpy(q->id, str, 15); |
189 | q->parse_fopt = parse_nofopt; | |
190 | q->print_fopt = print_nofopt; | |
191 | goto reg; | |
192 | } | |
193 | return q; | |
194 | } | |
195 | ||
c2f3a0f9 | 196 | static void usage(void) |
aba5acdf | 197 | { |
fec62c0e | 198 | fprintf(stderr, |
8589eb4e MC |
199 | "Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }\n" |
200 | " tc [-force] -batch filename\n" | |
afcd0699 | 201 | "where OBJECT := { qdisc | class | filter | chain |\n" |
8589eb4e | 202 | " action | monitor | exec }\n" |
fec62c0e | 203 | " OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[aw] |\n" |
8589eb4e | 204 | " -o[neline] | -j[son] | -p[retty] | -c[olor]\n" |
ca697cee | 205 | " -b[atch] [filename] | -n[etns] name | -N[umeric] |\n" |
477ca0df VB |
206 | " -nm | -nam[es] | { -cf | -conf } path\n" |
207 | " -br[ief] }\n"); | |
c2f3a0f9 | 208 | } |
209 | ||
e991c04d | 210 | static int do_cmd(int argc, char **argv) |
c2f3a0f9 | 211 | { |
212 | if (matches(*argv, "qdisc") == 0) | |
213 | return do_qdisc(argc-1, argv+1); | |
c2f3a0f9 | 214 | if (matches(*argv, "class") == 0) |
215 | return do_class(argc-1, argv+1); | |
c2f3a0f9 | 216 | if (matches(*argv, "filter") == 0) |
e991c04d | 217 | return do_filter(argc-1, argv+1); |
afcd0699 | 218 | if (matches(*argv, "chain") == 0) |
e991c04d | 219 | return do_chain(argc-1, argv+1); |
c2f3a0f9 | 220 | if (matches(*argv, "actions") == 0) |
e991c04d | 221 | return do_action(argc-1, argv+1); |
5bec3484 JHS |
222 | if (matches(*argv, "monitor") == 0) |
223 | return do_tcmonitor(argc-1, argv+1); | |
4bd62446 DB |
224 | if (matches(*argv, "exec") == 0) |
225 | return do_exec(argc-1, argv+1); | |
c2f3a0f9 | 226 | if (matches(*argv, "help") == 0) { |
227 | usage(); | |
228 | return 0; | |
229 | } | |
ae665a52 SH |
230 | |
231 | fprintf(stderr, "Object \"%s\" is unknown, try \"tc help\".\n", | |
c2f3a0f9 | 232 | *argv); |
044ebf35 | 233 | return -1; |
aba5acdf SH |
234 | } |
235 | ||
c2f3a0f9 | 236 | static int batch(const char *name) |
aba5acdf | 237 | { |
e991c04d | 238 | char *line = NULL; |
c2f3a0f9 | 239 | size_t len = 0; |
08856f02 | 240 | int ret = 0; |
c2f3a0f9 | 241 | |
a3aa47a5 | 242 | batch_mode = 1; |
dd3e9085 | 243 | if (name && strcmp(name, "-") != 0) { |
c2f3a0f9 | 244 | if (freopen(name, "r", stdin) == NULL) { |
fec62c0e SH |
245 | fprintf(stderr, |
246 | "Cannot open file \"%s\" for reading: %s\n", | |
c2f3a0f9 | 247 | name, strerror(errno)); |
044ebf35 | 248 | return -1; |
aba5acdf | 249 | } |
c2f3a0f9 | 250 | } |
251 | ||
252 | tc_core_init(); | |
253 | ||
254 | if (rtnl_open(&rth, 0) < 0) { | |
255 | fprintf(stderr, "Cannot open rtnetlink\n"); | |
256 | return -1; | |
257 | } | |
258 | ||
351efcde | 259 | cmdlineno = 0; |
e991c04d SH |
260 | while (getcmdline(&line, &len, stdin) != -1) { |
261 | char *largv[100]; | |
262 | int largc; | |
aba5acdf | 263 | |
e991c04d SH |
264 | largc = makeargs(line, largv, 100); |
265 | if (largc == 0) | |
08856f02 | 266 | continue; /* blank line */ |
aba5acdf | 267 | |
e991c04d SH |
268 | if (do_cmd(largc, largv)) { |
269 | fprintf(stderr, "Command failed %s:%d\n", | |
270 | name, cmdlineno); | |
08856f02 SH |
271 | ret = 1; |
272 | if (!force) | |
273 | break; | |
aba5acdf | 274 | } |
4dd599fd | 275 | fflush(stdout); |
e991c04d | 276 | } |
7901660a | 277 | |
485d0c60 | 278 | free(line); |
c2f3a0f9 | 279 | rtnl_close(&rth); |
280 | return ret; | |
281 | } | |
7901660a | 282 | |
c2f3a0f9 | 283 | |
284 | int main(int argc, char **argv) | |
285 | { | |
286 | int ret; | |
a3aa47a5 | 287 | char *batch_file = NULL; |
aba5acdf SH |
288 | |
289 | while (argc > 1) { | |
290 | if (argv[1][0] != '-') | |
291 | break; | |
292 | if (matches(argv[1], "-stats") == 0 || | |
3ea2bf45 | 293 | matches(argv[1], "-statistics") == 0) { |
aba5acdf SH |
294 | ++show_stats; |
295 | } else if (matches(argv[1], "-details") == 0) { | |
296 | ++show_details; | |
297 | } else if (matches(argv[1], "-raw") == 0) { | |
298 | ++show_raw; | |
44dcfe82 | 299 | } else if (matches(argv[1], "-pretty") == 0) { |
54336567 | 300 | ++pretty; |
d954b34a VK |
301 | } else if (matches(argv[1], "-graph") == 0) { |
302 | show_graph = 1; | |
aba5acdf | 303 | } else if (matches(argv[1], "-Version") == 0) { |
fbef6555 | 304 | printf("tc utility, iproute2-%s\n", version); |
044ebf35 | 305 | return 0; |
3ea2bf45 SH |
306 | } else if (matches(argv[1], "-iec") == 0) { |
307 | ++use_iec; | |
aba5acdf SH |
308 | } else if (matches(argv[1], "-help") == 0) { |
309 | usage(); | |
c2f3a0f9 | 310 | return 0; |
08856f02 SH |
311 | } else if (matches(argv[1], "-force") == 0) { |
312 | ++force; | |
4612d04d | 313 | } else if (matches(argv[1], "-batch") == 0) { |
08856f02 | 314 | argc--; argv++; |
a3aa47a5 SH |
315 | if (argc <= 1) |
316 | usage(); | |
317 | batch_file = argv[1]; | |
67e1d73b VK |
318 | } else if (matches(argv[1], "-netns") == 0) { |
319 | NEXT_ARG(); | |
320 | if (netns_switch(argv[1])) | |
321 | return -1; | |
ca697cee HL |
322 | } else if (matches(argv[1], "-Numeric") == 0) { |
323 | ++numeric; | |
4612d04d VK |
324 | } else if (matches(argv[1], "-names") == 0 || |
325 | matches(argv[1], "-nm") == 0) { | |
326 | use_names = true; | |
327 | } else if (matches(argv[1], "-cf") == 0 || | |
328 | matches(argv[1], "-conf") == 0) { | |
329 | NEXT_ARG(); | |
330 | conf_file = argv[1]; | |
ff1ab8ed | 331 | } else if (matches_color(argv[1], &color)) { |
32a6fbe5 ED |
332 | } else if (matches(argv[1], "-timestamp") == 0) { |
333 | timestamp++; | |
334 | } else if (matches(argv[1], "-tshort") == 0) { | |
335 | ++timestamp; | |
336 | ++timestamp_short; | |
c91d262f JP |
337 | } else if (matches(argv[1], "-json") == 0) { |
338 | ++json; | |
6e8634eb RM |
339 | } else if (matches(argv[1], "-oneline") == 0) { |
340 | ++oneline; | |
477ca0df VB |
341 | }else if (matches(argv[1], "-brief") == 0) { |
342 | ++brief; | |
aba5acdf | 343 | } else { |
fec62c0e SH |
344 | fprintf(stderr, |
345 | "Option \"%s\" is unknown, try \"tc -help\".\n", | |
346 | argv[1]); | |
044ebf35 | 347 | return -1; |
aba5acdf SH |
348 | } |
349 | argc--; argv++; | |
350 | } | |
351 | ||
6e8634eb RM |
352 | _SL_ = oneline ? "\\" : "\n"; |
353 | ||
4d82962c | 354 | check_enable_color(color, json); |
2d165c08 | 355 | |
a3aa47a5 SH |
356 | if (batch_file) |
357 | return batch(batch_file); | |
08856f02 | 358 | |
c2f3a0f9 | 359 | if (argc <= 1) { |
360 | usage(); | |
361 | return 0; | |
362 | } | |
363 | ||
aba5acdf | 364 | tc_core_init(); |
7901660a SH |
365 | if (rtnl_open(&rth, 0) < 0) { |
366 | fprintf(stderr, "Cannot open rtnetlink\n"); | |
367 | exit(1); | |
368 | } | |
aba5acdf | 369 | |
4612d04d VK |
370 | if (use_names && cls_names_init(conf_file)) { |
371 | ret = -1; | |
372 | goto Exit; | |
373 | } | |
374 | ||
e991c04d | 375 | ret = do_cmd(argc-1, argv+1); |
4612d04d | 376 | Exit: |
7901660a | 377 | rtnl_close(&rth); |
c2f3a0f9 | 378 | |
4612d04d VK |
379 | if (use_names) |
380 | cls_names_uninit(); | |
381 | ||
c2f3a0f9 | 382 | return ret; |
aba5acdf | 383 | } |