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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 ", rta_getattr_str(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
);