2 * tc.c "tc" utility frontend.
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.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
13 * Petri Mattila <petri@prihateam.fi> 990308: wrong memset's resulted in faults
22 #include <sys/socket.h>
23 #include <netinet/in.h>
24 #include <arpa/inet.h>
31 #include "tc_common.h"
36 int resolve_hosts = 0;
39 struct rtnl_handle rth;
41 static void *BODY; /* cached handle dlopen(NULL) */
42 static struct qdisc_util * qdisc_list;
43 static struct filter_util * filter_list;
45 static int print_noqopt(struct qdisc_util *qu, FILE *f,
48 if (opt && RTA_PAYLOAD(opt))
49 fprintf(f, "[Unknown qdisc, optlen=%u] ",
50 (unsigned) RTA_PAYLOAD(opt));
54 static int parse_noqopt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
57 fprintf(stderr, "Unknown qdisc \"%s\", hence option \"%s\" is unparsable\n", qu->id, *argv);
63 static int print_nofopt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 fhandle)
65 if (opt && RTA_PAYLOAD(opt))
66 fprintf(f, "fh %08x [Unknown filter, optlen=%u] ",
67 fhandle, (unsigned) RTA_PAYLOAD(opt));
69 fprintf(f, "fh %08x ", fhandle);
73 static int parse_nofopt(struct filter_util *qu, char *fhandle, int argc, char **argv, struct nlmsghdr *n)
78 fprintf(stderr, "Unknown filter \"%s\", hence option \"%s\" is unparsable\n", qu->id, *argv);
82 struct tcmsg *t = NLMSG_DATA(n);
83 if (get_u32(&handle, fhandle, 16)) {
84 fprintf(stderr, "Unparsable filter ID \"%s\"\n", fhandle);
87 t->tcm_handle = handle;
92 struct qdisc_util *get_qdisc_kind(const char *str)
98 for (q = qdisc_list; q; q = q->next)
99 if (strcmp(q->id, str) == 0)
102 snprintf(buf, sizeof(buf), "/usr/lib/tc/q_%s.so", str);
103 dlh = dlopen(buf, RTLD_LAZY);
105 /* look in current binary, only open once */
108 dlh = BODY = dlopen(NULL, RTLD_LAZY);
114 snprintf(buf, sizeof(buf), "%s_qdisc_util", str);
120 q->next = qdisc_list;
125 q = malloc(sizeof(*q));
128 memset(q, 0, sizeof(*q));
129 q->id = strcpy(malloc(strlen(str)+1), str);
130 q->parse_qopt = parse_noqopt;
131 q->print_qopt = print_noqopt;
138 struct filter_util *get_filter_kind(const char *str)
142 struct filter_util *q;
144 for (q = filter_list; q; q = q->next)
145 if (strcmp(q->id, str) == 0)
148 snprintf(buf, sizeof(buf), "/usr/lib/tc/f_%s.so", str);
149 dlh = dlopen(buf, RTLD_LAZY);
153 dlh = BODY = dlopen(NULL, RTLD_LAZY);
159 snprintf(buf, sizeof(buf), "%s_filter_util", str);
165 q->next = filter_list;
169 q = malloc(sizeof(*q));
171 memset(q, 0, sizeof(*q));
172 strncpy(q->id, str, 15);
173 q->parse_fopt = parse_nofopt;
174 q->print_fopt = print_nofopt;
180 static void usage(void)
182 fprintf(stderr, "Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }\n"
183 "where OBJECT := { qdisc | class | filter | action }\n"
184 " OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -b[atch] [file] }\n");
187 static int do_cmd(int argc, char **argv)
189 if (matches(*argv, "qdisc") == 0)
190 return do_qdisc(argc-1, argv+1);
192 if (matches(*argv, "class") == 0)
193 return do_class(argc-1, argv+1);
195 if (matches(*argv, "filter") == 0)
196 return do_filter(argc-1, argv+1);
198 if (matches(*argv, "actions") == 0)
199 return do_action(argc-1, argv+1);
201 if (matches(*argv, "help") == 0) {
206 fprintf(stderr, "Object \"%s\" is unknown, try \"tc help\".\n",
211 /* split command line into argument vector */
212 static int makeargs(char *line, char *argv[], int maxargs)
214 static const char ws[] = " \t\r\n";
218 for (cp = strtok(line, ws); cp; cp = strtok(NULL, ws)) {
219 if (argc >= (maxargs - 1)) {
220 fprintf(stderr, "Too many arguments to command\n");
231 /* Like glibc getline but handle continuation lines and comments */
232 static size_t getcmdline(char **linep, size_t *lenp, FILE *in)
237 if ((cc = getline(linep, lenp, in)) < 0)
238 return cc; /* eof or error */
241 cp = strchr(*linep, '#');
245 while ((cp = strstr(*linep, "\\\n")) != NULL) {
250 if ((cc1 = getline(&line1, &len1, in)) < 0) {
251 fprintf(stderr, "Missing continuation line\n");
258 cp = strchr(line1, '#');
262 *linep = realloc(*linep, strlen(*linep) + strlen(line1) + 1);
264 fprintf(stderr, "Out of memory\n");
268 strcat(*linep, line1);
274 static int batch(const char *name)
280 if (name && strcmp(name, "-") != 0) {
281 if (freopen(name, "r", stdin) == NULL) {
282 fprintf(stderr, "Cannot open file \"%s\" for reading: %s=n",
283 name, strerror(errno));
290 if (rtnl_open(&rth, 0) < 0) {
291 fprintf(stderr, "Cannot open rtnetlink\n");
296 while (getcmdline(&line, &len, stdin) != -1) {
300 largc = makeargs(line, largv, 100);
302 continue; /* blank line */
304 if (do_cmd(largc, largv)) {
305 fprintf(stderr, "Command failed %s:%d\n", name, lineno);
317 int main(int argc, char **argv)
321 char *batchfile = NULL;
324 if (argv[1][0] != '-')
326 if (matches(argv[1], "-stats") == 0 ||
327 matches(argv[1], "-statistics") == 0) {
329 } else if (matches(argv[1], "-details") == 0) {
331 } else if (matches(argv[1], "-raw") == 0) {
333 } else if (matches(argv[1], "-Version") == 0) {
334 printf("tc utility, iproute2-ss%s\n", SNAPSHOT);
336 } else if (matches(argv[1], "-iec") == 0) {
338 } else if (matches(argv[1], "-help") == 0) {
341 } else if (matches(argv[1], "-force") == 0) {
343 } else if (matches(argv[1], "-batch") == 0) {
349 fprintf(stderr, "Option \"%s\" is unknown, try \"tc -help\".\n", argv[1]);
356 return batch(batchfile);
364 if (rtnl_open(&rth, 0) < 0) {
365 fprintf(stderr, "Cannot open rtnetlink\n");
369 ret = do_cmd(argc-1, argv+1);