]>
git.proxmox.com Git - mirror_iproute2.git/blob - tc/tc_qdisc.c
2 * tc_qdisc.c "tc qdisc".
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>
10 * J Hadi Salim: Extension to ingress
18 #include <sys/socket.h>
19 #include <netinet/in.h>
20 #include <arpa/inet.h>
26 #include "tc_common.h"
28 static void usage(void) __attribute__((noreturn
));
30 static void usage(void)
32 fprintf(stderr
, "Usage: tc qdisc [ add | del | replace | change | get ] dev STRING\n");
33 fprintf(stderr
, " [ handle QHANDLE ] [ root | ingress | parent CLASSID ]\n");
34 fprintf(stderr
, " [ estimator INTERVAL TIME_CONSTANT ]\n");
35 fprintf(stderr
, " [ [ QDISC_KIND ] [ help | OPTIONS ] ]\n");
36 fprintf(stderr
, "\n");
37 fprintf(stderr
, " tc qdisc show [ dev STRING ] [ingress]\n");
38 fprintf(stderr
, "Where:\n");
39 fprintf(stderr
, "QDISC_KIND := { [p|b]fifo | tbf | prio | cbq | red | etc. }\n");
40 fprintf(stderr
, "OPTIONS := ... try tc qdisc add <desired QDISC_KIND> help\n");
44 int tc_qdisc_modify(int cmd
, unsigned flags
, int argc
, char **argv
)
46 struct rtnl_handle rth
;
47 struct qdisc_util
*q
= NULL
;
48 struct tc_estimator est
;
54 char buf
[TCA_BUF_MAX
];
57 memset(&req
, 0, sizeof(req
));
58 memset(&est
, 0, sizeof(est
));
59 memset(&d
, 0, sizeof(d
));
60 memset(&k
, 0, sizeof(k
));
62 req
.n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct tcmsg
));
63 req
.n
.nlmsg_flags
= NLM_F_REQUEST
|flags
;
64 req
.n
.nlmsg_type
= cmd
;
65 req
.t
.tcm_family
= AF_UNSPEC
;
68 if (strcmp(*argv
, "dev") == 0) {
72 strncpy(d
, *argv
, sizeof(d
)-1);
73 } else if (strcmp(*argv
, "handle") == 0) {
76 duparg("handle", *argv
);
78 if (get_qdisc_handle(&handle
, *argv
))
79 invarg(*argv
, "invalid qdisc ID");
80 req
.t
.tcm_handle
= handle
;
81 } else if (strcmp(*argv
, "root") == 0) {
82 if (req
.t
.tcm_parent
) {
83 fprintf(stderr
, "Error: \"root\" is duplicate parent ID\n");
86 req
.t
.tcm_parent
= TC_H_ROOT
;
88 } else if (strcmp(*argv
, "ingress") == 0) {
89 if (req
.t
.tcm_parent
) {
90 fprintf(stderr
, "Error: \"ingress\" is a duplicate parent ID\n");
93 req
.t
.tcm_parent
= TC_H_INGRESS
;
94 strncpy(k
, "ingress", sizeof(k
)-1);
95 q
= get_qdisc_kind(k
);
96 req
.t
.tcm_handle
= 0xffff0000;
101 } else if (strcmp(*argv
, "parent") == 0) {
104 if (req
.t
.tcm_parent
)
105 duparg("parent", *argv
);
106 if (get_tc_classid(&handle
, *argv
))
107 invarg(*argv
, "invalid parent ID");
108 req
.t
.tcm_parent
= handle
;
109 } else if (matches(*argv
, "estimator") == 0) {
110 if (parse_estimator(&argc
, &argv
, &est
))
112 } else if (matches(*argv
, "help") == 0) {
115 strncpy(k
, *argv
, sizeof(k
)-1);
117 q
= get_qdisc_kind(k
);
125 addattr_l(&req
.n
, sizeof(req
), TCA_KIND
, k
, strlen(k
)+1);
127 addattr_l(&req
.n
, sizeof(req
), TCA_RATE
, &est
, sizeof(est
));
130 if (q
->parse_qopt(q
, argc
, argv
, &req
.n
))
134 if (matches(*argv
, "help") == 0)
137 fprintf(stderr
, "Garbage instead of arguments \"%s ...\". Try \"tc qdisc help\".\n", *argv
);
142 if (rtnl_open(&rth
, 0) < 0) {
143 fprintf(stderr
, "Cannot open rtnetlink\n");
153 if ((idx
= ll_name_to_index(d
)) == 0) {
154 fprintf(stderr
, "Cannot find device \"%s\"\n", d
);
158 req
.t
.tcm_ifindex
= idx
;
161 if (rtnl_talk(&rth
, &req
.n
, 0, 0, NULL
, NULL
, NULL
) < 0) {
171 void print_tcstats_attr(FILE *fp
, const struct rtattr
*rta
)
176 /* handle case where kernel returns more/less than we know about */
177 memset(&st
, 0, sizeof(st
));
178 memcpy(&st
, RTA_DATA(rta
), MIN(RTA_PAYLOAD(rta
), sizeof(st
)));
180 fprintf(fp
, " Sent %llu bytes %u pkts (dropped %u, overlimits %u) ",
181 (unsigned long long)st
.bytes
, st
.packets
, st
.drops
,
184 if (st
.bps
|| st
.pps
|| st
.qlen
|| st
.backlog
) {
186 if (st
.bps
|| st
.pps
) {
187 fprintf(fp
, "rate ");
189 fprintf(fp
, "%s ", sprint_rate(st
.bps
, b1
));
191 fprintf(fp
, "%upps ", st
.pps
);
193 if (st
.qlen
|| st
.backlog
) {
194 fprintf(fp
, "backlog ");
196 fprintf(fp
, "%s ", sprint_size(st
.backlog
, b1
));
198 fprintf(fp
, "%up ", st
.qlen
);
203 static int filter_ifindex
;
205 static int print_qdisc(const struct sockaddr_nl
*who
,
209 FILE *fp
= (FILE*)arg
;
210 struct tcmsg
*t
= NLMSG_DATA(n
);
211 int len
= n
->nlmsg_len
;
212 struct rtattr
* tb
[TCA_MAX
+1];
213 struct qdisc_util
*q
;
216 if (n
->nlmsg_type
!= RTM_NEWQDISC
&& n
->nlmsg_type
!= RTM_DELQDISC
) {
217 fprintf(stderr
, "Not a qdisc\n");
220 len
-= NLMSG_LENGTH(sizeof(*t
));
222 fprintf(stderr
, "Wrong len %d\n", len
);
226 if (filter_ifindex
&& filter_ifindex
!= t
->tcm_ifindex
)
229 memset(tb
, 0, sizeof(tb
));
230 parse_rtattr(tb
, TCA_MAX
, TCA_RTA(t
), len
);
232 if (tb
[TCA_KIND
] == NULL
) {
233 fprintf(stderr
, "print_qdisc: NULL kind\n");
237 if (n
->nlmsg_type
== RTM_DELQDISC
)
238 fprintf(fp
, "deleted ");
240 fprintf(fp
, "qdisc %s %x: ", (char*)RTA_DATA(tb
[TCA_KIND
]), t
->tcm_handle
>>16);
241 if (filter_ifindex
== 0)
242 fprintf(fp
, "dev %s ", ll_index_to_name(t
->tcm_ifindex
));
243 if (t
->tcm_parent
== TC_H_ROOT
)
244 fprintf(fp
, "root ");
245 else if (t
->tcm_parent
) {
246 print_tc_classid(abuf
, sizeof(abuf
), t
->tcm_parent
);
247 fprintf(fp
, "parent %s ", abuf
);
249 if (t
->tcm_info
!= 1) {
250 fprintf(fp
, "refcnt %d ", t
->tcm_info
);
252 /* pfifo_fast is generic enough to warrant the hardcoding --JHS */
254 if (0 == strcmp("pfifo_fast", RTA_DATA(tb
[TCA_KIND
])))
255 q
= get_qdisc_kind("prio");
257 q
= get_qdisc_kind(RTA_DATA(tb
[TCA_KIND
]));
259 if (tb
[TCA_OPTIONS
]) {
261 q
->print_qopt(q
, fp
, tb
[TCA_OPTIONS
]);
263 fprintf(fp
, "[cannot parse qdisc parameters]");
268 print_tcstats_attr(fp
, tb
[TCA_STATS
]);
272 if (q
&& tb
[TCA_XSTATS
] && q
->print_xstats
) {
273 q
->print_xstats(q
, fp
, tb
[TCA_XSTATS
]);
282 int tc_qdisc_list(int argc
, char **argv
)
285 struct rtnl_handle rth
;
288 memset(&t
, 0, sizeof(t
));
289 t
.tcm_family
= AF_UNSPEC
;
290 memset(&d
, 0, sizeof(d
));
293 if (strcmp(*argv
, "dev") == 0) {
295 strncpy(d
, *argv
, sizeof(d
)-1);
297 } else if (strcmp(*argv
, "ingress") == 0) {
299 fprintf(stderr
, "Duplicate parent ID\n");
302 t
.tcm_parent
= TC_H_INGRESS
;
304 } else if (matches(*argv
, "help") == 0) {
307 fprintf(stderr
, "What is \"%s\"? Try \"tc qdisc help\".\n", *argv
);
314 if (rtnl_open(&rth
, 0) < 0) {
315 fprintf(stderr
, "Cannot open rtnetlink\n");
322 if ((t
.tcm_ifindex
= ll_name_to_index(d
)) == 0) {
323 fprintf(stderr
, "Cannot find device \"%s\"\n", d
);
327 filter_ifindex
= t
.tcm_ifindex
;
330 if (rtnl_dump_request(&rth
, RTM_GETQDISC
, &t
, sizeof(t
)) < 0) {
331 perror("Cannot send dump request");
336 if (rtnl_dump_filter(&rth
, print_qdisc
, stdout
, NULL
, NULL
) < 0) {
337 fprintf(stderr
, "Dump terminated\n");
346 int do_qdisc(int argc
, char **argv
)
349 return tc_qdisc_list(0, NULL
);
350 if (matches(*argv
, "add") == 0)
351 return tc_qdisc_modify(RTM_NEWQDISC
, NLM_F_EXCL
|NLM_F_CREATE
, argc
-1, argv
+1);
352 if (matches(*argv
, "change") == 0)
353 return tc_qdisc_modify(RTM_NEWQDISC
, 0, argc
-1, argv
+1);
354 if (matches(*argv
, "replace") == 0)
355 return tc_qdisc_modify(RTM_NEWQDISC
, NLM_F_CREATE
|NLM_F_REPLACE
, argc
-1, argv
+1);
356 if (matches(*argv
, "link") == 0)
357 return tc_qdisc_modify(RTM_NEWQDISC
, NLM_F_REPLACE
, argc
-1, argv
+1);
358 if (matches(*argv
, "delete") == 0)
359 return tc_qdisc_modify(RTM_DELQDISC
, 0, argc
-1, argv
+1);
361 if (matches(*argv
, "get") == 0)
362 return tc_qdisc_get(RTM_GETQDISC
, 0, argc
-1, argv
+1);
364 if (matches(*argv
, "list") == 0 || matches(*argv
, "show") == 0
365 || matches(*argv
, "lst") == 0)
366 return tc_qdisc_list(argc
-1, argv
+1);
367 if (matches(*argv
, "help") == 0)
369 fprintf(stderr
, "Command \"%s\" is unknown, try \"tc qdisc help\".\n", *argv
);