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;
38 struct rtnl_handle rth;
40 static void *BODY; /* cached handle dlopen(NULL) */
41 static struct qdisc_util * qdisc_list;
42 static struct filter_util * filter_list;
44 static int print_noqopt(struct qdisc_util *qu, FILE *f,
47 if (opt && RTA_PAYLOAD(opt))
48 fprintf(f, "[Unknown qdisc, optlen=%u] ",
49 (unsigned) RTA_PAYLOAD(opt));
53 static int parse_noqopt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
56 fprintf(stderr, "Unknown qdisc \"%s\", hence option \"%s\" is unparsable\n", qu->id, *argv);
62 static int print_nofopt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 fhandle)
64 if (opt && RTA_PAYLOAD(opt))
65 fprintf(f, "fh %08x [Unknown filter, optlen=%u] ",
66 fhandle, (unsigned) RTA_PAYLOAD(opt));
68 fprintf(f, "fh %08x ", fhandle);
72 static int parse_nofopt(struct filter_util *qu, char *fhandle, int argc, char **argv, struct nlmsghdr *n)
77 fprintf(stderr, "Unknown filter \"%s\", hence option \"%s\" is unparsable\n", qu->id, *argv);
81 struct tcmsg *t = NLMSG_DATA(n);
82 if (get_u32(&handle, fhandle, 16)) {
83 fprintf(stderr, "Unparsable filter ID \"%s\"\n", fhandle);
86 t->tcm_handle = handle;
91 struct qdisc_util *get_qdisc_kind(const char *str)
97 for (q = qdisc_list; q; q = q->next)
98 if (strcmp(q->id, str) == 0)
101 snprintf(buf, sizeof(buf), "/usr/lib/tc/q_%s.so", str);
102 dlh = dlopen(buf, RTLD_LAZY);
104 /* look in current binary, only open once */
107 dlh = BODY = dlopen(NULL, RTLD_LAZY);
113 snprintf(buf, sizeof(buf), "%s_qdisc_util", str);
119 q->next = qdisc_list;
124 q = malloc(sizeof(*q));
127 memset(q, 0, sizeof(*q));
128 q->id = strcpy(malloc(strlen(str)+1), str);
129 q->parse_qopt = parse_noqopt;
130 q->print_qopt = print_noqopt;
137 struct filter_util *get_filter_kind(const char *str)
141 struct filter_util *q;
143 for (q = filter_list; q; q = q->next)
144 if (strcmp(q->id, str) == 0)
147 snprintf(buf, sizeof(buf), "/usr/lib/tc/f_%s.so", str);
148 dlh = dlopen(buf, RTLD_LAZY);
152 dlh = BODY = dlopen(NULL, RTLD_LAZY);
158 snprintf(buf, sizeof(buf), "%s_filter_util", str);
164 q->next = filter_list;
168 q = malloc(sizeof(*q));
170 memset(q, 0, sizeof(*q));
171 strncpy(q->id, str, 15);
172 q->parse_fopt = parse_nofopt;
173 q->print_fopt = print_nofopt;
179 static void usage(void)
181 fprintf(stderr, "Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }\n"
182 "where OBJECT := { qdisc | class | filter | action }\n"
183 " OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -b[atch] file }\n");
186 static int do_cmd(int argc, char **argv)
188 if (matches(*argv, "qdisc") == 0)
189 return do_qdisc(argc-1, argv+1);
191 if (matches(*argv, "class") == 0)
192 return do_class(argc-1, argv+1);
194 if (matches(*argv, "filter") == 0)
195 return do_filter(argc-1, argv+1);
197 if (matches(*argv, "actions") == 0)
198 return do_action(argc-1, argv+1);
200 if (matches(*argv, "help") == 0) {
205 fprintf(stderr, "Object \"%s\" is unknown, try \"tc help\".\n",
210 static int makeargs(char *line, char *argv[], int maxargs)
212 static const char ws[] = " \t\r\n";
216 for (cp = strtok(line, ws); cp; cp = strtok(NULL, ws)) {
217 if (argc >= maxargs) {
218 fprintf(stderr, "Too many arguments to command\n");
228 static int batch(const char *name)
237 if (strcmp(name, "-") != 0) {
238 if (freopen(name, "r", stdin) == NULL) {
239 fprintf(stderr, "Cannot open file \"%s\" for reading: %s=n",
240 name, strerror(errno));
247 if (rtnl_open(&rth, 0) < 0) {
248 fprintf(stderr, "Cannot open rtnetlink\n");
252 while ((cc = getline(&line, &len, stdin)) != -1) {
255 /* ignore blank lines and comments */
256 if (*line == '\n' || *line == '#')
259 /* handle continuation lines */
260 while (cc >= 2 && strcmp(line+cc-2, "\\\n") == 0) {
264 cc1 = getline(&line1, &len1, stdin);
267 fprintf(stderr, "Missing continuation line\n");
271 line = realloc(line, cc + cc1);
273 fprintf(stderr, "Out of memory\n");
277 strcpy(line+cc-2, line1);
282 largc = makeargs(line, largv, 100);
284 ret = do_cmd(largc, largv);
286 fprintf(stderr, "Command failed %s:%d\n", name, lineno);
296 int main(int argc, char **argv)
301 if (argv[1][0] != '-')
303 if (matches(argv[1], "-stats") == 0 ||
304 matches(argv[1], "-statistics") == 0) {
306 } else if (matches(argv[1], "-details") == 0) {
308 } else if (matches(argv[1], "-raw") == 0) {
310 } else if (matches(argv[1], "-Version") == 0) {
311 printf("tc utility, iproute2-ss%s\n", SNAPSHOT);
313 } else if (matches(argv[1], "-iec") == 0) {
315 } else if (matches(argv[1], "-help") == 0) {
318 } else if (matches(argv[1], "-batch") == 0) {
320 fprintf(stderr, "Wrong number of arguments in batch mode\n");
324 return batch(argv[2]);
326 fprintf(stderr, "Option \"%s\" is unknown, try \"tc -help\".\n", argv[1]);
338 if (rtnl_open(&rth, 0) < 0) {
339 fprintf(stderr, "Cannot open rtnetlink\n");
343 ret = do_cmd(argc-1, argv+1);