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