2 * tc_filter.c "tc filter".
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>
18 #include <sys/socket.h>
19 #include <netinet/in.h>
20 #include <arpa/inet.h>
22 #include <linux/if_ether.h>
27 #include "tc_common.h"
29 static void usage(void);
31 static void usage(void)
33 fprintf(stderr, "Usage: tc filter [ add | del | change | replace | show ] dev STRING\n");
34 fprintf(stderr, " [ pref PRIO ] protocol PROTO\n");
35 fprintf(stderr, " [ estimator INTERVAL TIME_CONSTANT ]\n");
36 fprintf(stderr, " [ root | classid CLASSID ] [ handle FILTERID ]\n");
37 fprintf(stderr, " [ [ FILTER_TYPE ] [ help | OPTIONS ] ]\n");
38 fprintf(stderr, "\n");
39 fprintf(stderr, " tc filter show [ dev STRING ] [ root | parent CLASSID ]\n");
40 fprintf(stderr, "Where:\n");
41 fprintf(stderr, "FILTER_TYPE := { rsvp | u32 | fw | route | etc. }\n");
42 fprintf(stderr, "FILTERID := ... format depends on classifier, see there\n");
43 fprintf(stderr, "OPTIONS := ... try tc filter add <desired FILTER_KIND> help\n");
48 int tc_filter_modify(int cmd, unsigned flags, int argc, char **argv)
55 struct filter_util *q = NULL;
62 struct tc_estimator est;
64 memset(&req, 0, sizeof(req));
65 memset(&est, 0, sizeof(est));
66 memset(d, 0, sizeof(d));
67 memset(k, 0, sizeof(k));
68 memset(&req, 0, sizeof(req));
70 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg));
71 req.n.nlmsg_flags = NLM_F_REQUEST|flags;
72 req.n.nlmsg_type = cmd;
73 req.t.tcm_family = AF_UNSPEC;
75 if (cmd == RTM_NEWTFILTER && flags & NLM_F_CREATE)
76 protocol = htons(ETH_P_ALL);
79 if (strcmp(*argv, "dev") == 0) {
83 strncpy(d, *argv, sizeof(d)-1);
84 } else if (strcmp(*argv, "root") == 0) {
85 if (req.t.tcm_parent) {
86 fprintf(stderr, "Error: \"root\" is duplicate parent ID\n");
89 req.t.tcm_parent = TC_H_ROOT;
90 } else if (strcmp(*argv, "parent") == 0) {
94 duparg("parent", *argv);
95 if (get_tc_classid(&handle, *argv))
96 invarg(*argv, "Invalid parent ID");
97 req.t.tcm_parent = handle;
98 } else if (strcmp(*argv, "handle") == 0) {
101 duparg("handle", *argv);
103 } else if (matches(*argv, "preference") == 0 ||
104 matches(*argv, "priority") == 0) {
107 duparg("priority", *argv);
108 if (get_u32(&prio, *argv, 0))
109 invarg(*argv, "invalid priority value");
110 } else if (matches(*argv, "protocol") == 0) {
114 duparg("protocol", *argv);
115 if (ll_proto_a2n(&id, *argv))
116 invarg(*argv, "invalid protocol");
119 } else if (matches(*argv, "estimator") == 0) {
120 if (parse_estimator(&argc, &argv, &est) < 0)
122 } else if (matches(*argv, "help") == 0) {
126 strncpy(k, *argv, sizeof(k)-1);
128 q = get_filter_kind(k);
136 req.t.tcm_info = TC_H_MAKE(prio<<16, protocol);
139 addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1);
142 if (q->parse_fopt(q, fhandle, argc, argv, &req.n))
146 fprintf(stderr, "Must specify filter type when using "
151 if (matches(*argv, "help") == 0)
153 fprintf(stderr, "Garbage instead of arguments \"%s ...\". Try \"tc filter help\".\n", *argv);
158 addattr_l(&req.n, sizeof(req), TCA_RATE, &est, sizeof(est));
164 if ((req.t.tcm_ifindex = ll_name_to_index(d)) == 0) {
165 fprintf(stderr, "Cannot find device \"%s\"\n", d);
170 if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0) {
171 fprintf(stderr, "We have an error talking to the kernel\n");
178 static __u32 filter_parent;
179 static int filter_ifindex;
180 static __u32 filter_prio;
181 static __u32 filter_protocol;
184 int print_filter(const struct sockaddr_nl *who,
188 FILE *fp = (FILE*)arg;
189 struct tcmsg *t = NLMSG_DATA(n);
190 int len = n->nlmsg_len;
191 struct rtattr * tb[TCA_MAX+1];
192 struct filter_util *q;
195 if (n->nlmsg_type != RTM_NEWTFILTER && n->nlmsg_type != RTM_DELTFILTER) {
196 fprintf(stderr, "Not a filter\n");
199 len -= NLMSG_LENGTH(sizeof(*t));
201 fprintf(stderr, "Wrong len %d\n", len);
205 memset(tb, 0, sizeof(tb));
206 parse_rtattr(tb, TCA_MAX, TCA_RTA(t), len);
208 if (tb[TCA_KIND] == NULL) {
209 fprintf(stderr, "print_filter: NULL kind\n");
213 if (n->nlmsg_type == RTM_DELTFILTER)
214 fprintf(fp, "deleted ");
216 fprintf(fp, "filter ");
217 if (!filter_ifindex || filter_ifindex != t->tcm_ifindex)
218 fprintf(fp, "dev %s ", ll_index_to_name(t->tcm_ifindex));
220 if (!filter_parent || filter_parent != t->tcm_parent) {
221 if (t->tcm_parent == TC_H_ROOT)
222 fprintf(fp, "root ");
224 print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
225 fprintf(fp, "parent %s ", abuf);
229 f_proto = TC_H_MIN(t->tcm_info);
230 __u32 prio = TC_H_MAJ(t->tcm_info)>>16;
231 if (!filter_protocol || filter_protocol != f_proto) {
234 fprintf(fp, "protocol %s ",
235 ll_proto_n2a(f_proto, b1, sizeof(b1)));
238 if (!filter_prio || filter_prio != prio) {
240 fprintf(fp, "pref %u ", prio);
243 fprintf(fp, "%s ", (char*)RTA_DATA(tb[TCA_KIND]));
244 q = get_filter_kind(RTA_DATA(tb[TCA_KIND]));
245 if (tb[TCA_OPTIONS]) {
247 q->print_fopt(q, fp, tb[TCA_OPTIONS], t->tcm_handle);
249 fprintf(fp, "[cannot parse parameters]");
253 if (show_stats && (tb[TCA_STATS] || tb[TCA_STATS2])) {
254 print_tcstats_attr(fp, tb, " ", NULL);
263 int tc_filter_list(int argc, char **argv)
269 char *fhandle = NULL;
271 memset(&t, 0, sizeof(t));
272 t.tcm_family = AF_UNSPEC;
273 memset(d, 0, sizeof(d));
276 if (strcmp(*argv, "dev") == 0) {
279 duparg("dev", *argv);
280 strncpy(d, *argv, sizeof(d)-1);
281 } else if (strcmp(*argv, "root") == 0) {
283 fprintf(stderr, "Error: \"root\" is duplicate parent ID\n");
286 filter_parent = t.tcm_parent = TC_H_ROOT;
287 } else if (strcmp(*argv, "parent") == 0) {
291 duparg("parent", *argv);
292 if (get_tc_classid(&handle, *argv))
293 invarg(*argv, "invalid parent ID");
294 filter_parent = t.tcm_parent = handle;
295 } else if (strcmp(*argv, "handle") == 0) {
298 duparg("handle", *argv);
300 } else if (matches(*argv, "preference") == 0 ||
301 matches(*argv, "priority") == 0) {
304 duparg("priority", *argv);
305 if (get_u32(&prio, *argv, 0))
306 invarg(*argv, "invalid preference");
308 } else if (matches(*argv, "protocol") == 0) {
312 duparg("protocol", *argv);
313 if (ll_proto_a2n(&res, *argv))
314 invarg(*argv, "invalid protocol");
316 filter_protocol = protocol;
317 } else if (matches(*argv, "help") == 0) {
320 fprintf(stderr, " What is \"%s\"? Try \"tc filter help\"\n", *argv);
327 t.tcm_info = TC_H_MAKE(prio<<16, protocol);
332 if ((t.tcm_ifindex = ll_name_to_index(d)) == 0) {
333 fprintf(stderr, "Cannot find device \"%s\"\n", d);
336 filter_ifindex = t.tcm_ifindex;
339 if (rtnl_dump_request(&rth, RTM_GETTFILTER, &t, sizeof(t)) < 0) {
340 perror("Cannot send dump request");
344 if (rtnl_dump_filter(&rth, print_filter, stdout) < 0) {
345 fprintf(stderr, "Dump terminated\n");
352 int do_filter(int argc, char **argv)
355 return tc_filter_list(0, NULL);
356 if (matches(*argv, "add") == 0)
357 return tc_filter_modify(RTM_NEWTFILTER, NLM_F_EXCL|NLM_F_CREATE, argc-1, argv+1);
358 if (matches(*argv, "change") == 0)
359 return tc_filter_modify(RTM_NEWTFILTER, 0, argc-1, argv+1);
360 if (matches(*argv, "replace") == 0)
361 return tc_filter_modify(RTM_NEWTFILTER, NLM_F_CREATE, argc-1, argv+1);
362 if (matches(*argv, "delete") == 0)
363 return tc_filter_modify(RTM_DELTFILTER, 0, argc-1, argv+1);
365 if (matches(*argv, "get") == 0)
366 return tc_filter_get(RTM_GETTFILTER, 0, argc-1, argv+1);
368 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
369 || matches(*argv, "lst") == 0)
370 return tc_filter_list(argc-1, argv+1);
371 if (matches(*argv, "help") == 0) {
375 fprintf(stderr, "Command \"%s\" is unknown, try \"tc filter help\".\n", *argv);