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
17 #include <sys/socket.h>
18 #include <netinet/in.h>
19 #include <arpa/inet.h>
26 #include "tc_common.h"
28 static int usage(void)
30 fprintf(stderr
, "Usage: tc qdisc [ add | del | replace | change | show ] dev STRING\n");
31 fprintf(stderr
, " [ handle QHANDLE ] [ root | ingress | clsact | parent CLASSID ]\n");
32 fprintf(stderr
, " [ estimator INTERVAL TIME_CONSTANT ]\n");
33 fprintf(stderr
, " [ stab [ help | STAB_OPTIONS] ]\n");
34 fprintf(stderr
, " [ ingress_block BLOCK_INDEX ] [ egress_block BLOCK_INDEX ]\n");
35 fprintf(stderr
, " [ [ QDISC_KIND ] [ help | OPTIONS ] ]\n");
36 fprintf(stderr
, "\n");
37 fprintf(stderr
, " tc qdisc show [ dev STRING ] [ ingress | clsact ] [ invisible ]\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");
41 fprintf(stderr
, "STAB_OPTIONS := ... try tc qdisc add stab help\n");
45 static int tc_qdisc_modify(int cmd
, unsigned int flags
, int argc
, char **argv
)
47 struct qdisc_util
*q
= NULL
;
48 struct tc_estimator est
= {};
50 struct tc_sizespec szopts
;
53 char d
[IFNAMSIZ
] = {};
54 char k
[FILTER_NAMESZ
] = {};
58 char buf
[TCA_BUF_MAX
];
60 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct tcmsg
)),
61 .n
.nlmsg_flags
= NLM_F_REQUEST
| flags
,
63 .t
.tcm_family
= AF_UNSPEC
,
65 __u32 ingress_block
= 0;
66 __u32 egress_block
= 0;
69 if (strcmp(*argv
, "dev") == 0) {
73 strncpy(d
, *argv
, sizeof(d
)-1);
74 } else if (strcmp(*argv
, "handle") == 0) {
78 duparg("handle", *argv
);
80 if (get_qdisc_handle(&handle
, *argv
))
81 invarg("invalid qdisc ID", *argv
);
82 req
.t
.tcm_handle
= handle
;
83 } else if (strcmp(*argv
, "root") == 0) {
84 if (req
.t
.tcm_parent
) {
85 fprintf(stderr
, "Error: \"root\" is duplicate parent ID\n");
88 req
.t
.tcm_parent
= TC_H_ROOT
;
89 } else if (strcmp(*argv
, "clsact") == 0) {
90 if (req
.t
.tcm_parent
) {
91 fprintf(stderr
, "Error: \"clsact\" is a duplicate parent ID\n");
94 req
.t
.tcm_parent
= TC_H_CLSACT
;
95 strncpy(k
, "clsact", sizeof(k
) - 1);
96 q
= get_qdisc_kind(k
);
97 req
.t
.tcm_handle
= TC_H_MAKE(TC_H_CLSACT
, 0);
100 } else if (strcmp(*argv
, "ingress") == 0) {
101 if (req
.t
.tcm_parent
) {
102 fprintf(stderr
, "Error: \"ingress\" is a duplicate parent ID\n");
105 req
.t
.tcm_parent
= TC_H_INGRESS
;
106 strncpy(k
, "ingress", sizeof(k
) - 1);
107 q
= get_qdisc_kind(k
);
108 req
.t
.tcm_handle
= TC_H_MAKE(TC_H_INGRESS
, 0);
111 } else if (strcmp(*argv
, "parent") == 0) {
115 if (req
.t
.tcm_parent
)
116 duparg("parent", *argv
);
117 if (get_tc_classid(&handle
, *argv
))
118 invarg("invalid parent ID", *argv
);
119 req
.t
.tcm_parent
= handle
;
120 } else if (matches(*argv
, "estimator") == 0) {
121 if (parse_estimator(&argc
, &argv
, &est
))
123 } else if (matches(*argv
, "stab") == 0) {
124 if (parse_size_table(&argc
, &argv
, &stab
.szopts
) < 0)
127 } else if (matches(*argv
, "ingress_block") == 0) {
129 if (get_u32(&ingress_block
, *argv
, 0) || !ingress_block
)
130 invarg("invalid ingress block index value", *argv
);
131 } else if (matches(*argv
, "egress_block") == 0) {
133 if (get_u32(&egress_block
, *argv
, 0) || !egress_block
)
134 invarg("invalid egress block index value", *argv
);
135 } else if (matches(*argv
, "help") == 0) {
138 strncpy(k
, *argv
, sizeof(k
)-1);
140 q
= get_qdisc_kind(k
);
148 addattr_l(&req
.n
, sizeof(req
), TCA_KIND
, k
, strlen(k
)+1);
150 addattr_l(&req
.n
, sizeof(req
), TCA_RATE
, &est
, sizeof(est
));
153 addattr32(&req
.n
, sizeof(req
),
154 TCA_INGRESS_BLOCK
, ingress_block
);
156 addattr32(&req
.n
, sizeof(req
),
157 TCA_EGRESS_BLOCK
, egress_block
);
161 if (q
->parse_qopt(q
, argc
, argv
, &req
.n
, d
))
164 fprintf(stderr
, "qdisc '%s' does not support option parsing\n", k
);
169 if (matches(*argv
, "help") == 0)
172 fprintf(stderr
, "Garbage instead of arguments \"%s ...\". Try \"tc qdisc help\".\n", *argv
);
177 if (check_size_table_opts(&stab
.szopts
)) {
180 if (tc_calc_size_table(&stab
.szopts
, &stab
.data
) < 0) {
181 fprintf(stderr
, "failed to calculate size table.\n");
185 tail
= addattr_nest(&req
.n
, sizeof(req
), TCA_STAB
);
186 addattr_l(&req
.n
, sizeof(req
), TCA_STAB_BASE
, &stab
.szopts
,
187 sizeof(stab
.szopts
));
189 addattr_l(&req
.n
, sizeof(req
), TCA_STAB_DATA
, stab
.data
,
190 stab
.szopts
.tsize
* sizeof(__u16
));
191 addattr_nest_end(&req
.n
, tail
);
201 idx
= ll_name_to_index(d
);
204 req
.t
.tcm_ifindex
= idx
;
207 if (rtnl_talk(&rth
, &req
.n
, NULL
) < 0)
213 static int filter_ifindex
;
215 int print_qdisc(struct nlmsghdr
*n
, void *arg
)
217 FILE *fp
= (FILE *)arg
;
218 struct tcmsg
*t
= NLMSG_DATA(n
);
219 int len
= n
->nlmsg_len
;
220 struct rtattr
*tb
[TCA_MAX
+1];
221 struct qdisc_util
*q
;
224 if (n
->nlmsg_type
!= RTM_NEWQDISC
&& n
->nlmsg_type
!= RTM_DELQDISC
) {
225 fprintf(stderr
, "Not a qdisc\n");
228 len
-= NLMSG_LENGTH(sizeof(*t
));
230 fprintf(stderr
, "Wrong len %d\n", len
);
234 if (filter_ifindex
&& filter_ifindex
!= t
->tcm_ifindex
)
237 parse_rtattr(tb
, TCA_MAX
, TCA_RTA(t
), len
);
239 if (tb
[TCA_KIND
] == NULL
) {
240 fprintf(stderr
, "print_qdisc: NULL kind\n");
244 open_json_object(NULL
);
246 if (n
->nlmsg_type
== RTM_DELQDISC
)
247 print_bool(PRINT_ANY
, "deleted", "deleted ", true);
249 if (n
->nlmsg_type
== RTM_NEWQDISC
&&
250 (n
->nlmsg_flags
& NLM_F_CREATE
) &&
251 (n
->nlmsg_flags
& NLM_F_REPLACE
))
252 print_bool(PRINT_ANY
, "replaced", "replaced ", true);
254 if (n
->nlmsg_type
== RTM_NEWQDISC
&&
255 (n
->nlmsg_flags
& NLM_F_CREATE
) &&
256 (n
->nlmsg_flags
& NLM_F_EXCL
))
257 print_bool(PRINT_ANY
, "added", "added ", true);
259 print_string(PRINT_ANY
, "kind", "qdisc %s",
260 rta_getattr_str(tb
[TCA_KIND
]));
261 sprintf(abuf
, "%x:", t
->tcm_handle
>> 16);
262 print_string(PRINT_ANY
, "handle", " %s", abuf
);
264 sprintf(abuf
, "[%08x]", t
->tcm_handle
);
265 print_string(PRINT_FP
, NULL
, "%s", abuf
);
267 print_string(PRINT_FP
, NULL
, " ", NULL
);
269 if (filter_ifindex
== 0)
270 print_devname(PRINT_ANY
, t
->tcm_ifindex
);
272 if (t
->tcm_parent
== TC_H_ROOT
)
273 print_bool(PRINT_ANY
, "root", "root ", true);
274 else if (t
->tcm_parent
) {
275 print_tc_classid(abuf
, sizeof(abuf
), t
->tcm_parent
);
276 print_string(PRINT_ANY
, "parent", "parent %s ", abuf
);
279 if (t
->tcm_info
!= 1)
280 print_uint(PRINT_ANY
, "refcnt", "refcnt %u ", t
->tcm_info
);
282 if (tb
[TCA_HW_OFFLOAD
] &&
283 (rta_getattr_u8(tb
[TCA_HW_OFFLOAD
])))
284 print_bool(PRINT_ANY
, "offloaded", "offloaded ", true);
286 if (tb
[TCA_INGRESS_BLOCK
] &&
287 RTA_PAYLOAD(tb
[TCA_INGRESS_BLOCK
]) >= sizeof(__u32
)) {
288 __u32 block
= rta_getattr_u32(tb
[TCA_INGRESS_BLOCK
]);
291 print_uint(PRINT_ANY
, "ingress_block",
292 "ingress_block %u ", block
);
295 if (tb
[TCA_EGRESS_BLOCK
] &&
296 RTA_PAYLOAD(tb
[TCA_EGRESS_BLOCK
]) >= sizeof(__u32
)) {
297 __u32 block
= rta_getattr_u32(tb
[TCA_EGRESS_BLOCK
]);
300 print_uint(PRINT_ANY
, "egress_block",
301 "egress_block %u ", block
);
304 /* pfifo_fast is generic enough to warrant the hardcoding --JHS */
305 if (strcmp("pfifo_fast", RTA_DATA(tb
[TCA_KIND
])) == 0)
306 q
= get_qdisc_kind("prio");
308 q
= get_qdisc_kind(RTA_DATA(tb
[TCA_KIND
]));
310 open_json_object("options");
311 if (tb
[TCA_OPTIONS
]) {
313 q
->print_qopt(q
, fp
, tb
[TCA_OPTIONS
]);
315 print_string(PRINT_FP
, NULL
,
316 "[cannot parse qdisc parameters]", NULL
);
320 print_string(PRINT_FP
, NULL
, "\n", NULL
);
322 if (show_details
&& tb
[TCA_STAB
]) {
323 print_size_table(fp
, " ", tb
[TCA_STAB
]);
324 print_string(PRINT_FP
, NULL
, "\n", NULL
);
328 struct rtattr
*xstats
= NULL
;
330 if (tb
[TCA_STATS
] || tb
[TCA_STATS2
] || tb
[TCA_XSTATS
]) {
331 print_tcstats_attr(fp
, tb
, " ", &xstats
);
332 print_string(PRINT_FP
, NULL
, "\n", NULL
);
335 if (q
&& xstats
&& q
->print_xstats
) {
336 q
->print_xstats(q
, fp
, xstats
);
337 print_string(PRINT_FP
, NULL
, "\n", NULL
);
345 static int tc_qdisc_list(int argc
, char **argv
)
347 struct tcmsg t
= { .tcm_family
= AF_UNSPEC
};
348 char d
[IFNAMSIZ
] = {};
349 bool dump_invisible
= false;
352 if (strcmp(*argv
, "dev") == 0) {
354 strncpy(d
, *argv
, sizeof(d
)-1);
355 } else if (strcmp(*argv
, "ingress") == 0 ||
356 strcmp(*argv
, "clsact") == 0) {
358 fprintf(stderr
, "Duplicate parent ID\n");
361 t
.tcm_parent
= TC_H_INGRESS
;
362 } else if (matches(*argv
, "help") == 0) {
364 } else if (strcmp(*argv
, "invisible") == 0) {
365 dump_invisible
= true;
367 fprintf(stderr
, "What is \"%s\"? Try \"tc qdisc help\".\n", *argv
);
377 t
.tcm_ifindex
= ll_name_to_index(d
);
380 filter_ifindex
= t
.tcm_ifindex
;
383 if (dump_invisible
) {
389 .n
.nlmsg_type
= RTM_GETQDISC
,
390 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct tcmsg
)),
393 req
.t
.tcm_family
= AF_UNSPEC
;
395 addattr(&req
.n
, 256, TCA_DUMP_INVISIBLE
);
396 if (rtnl_dump_request_n(&rth
, &req
.n
) < 0) {
397 perror("Cannot send dump request");
401 } else if (rtnl_dump_request(&rth
, RTM_GETQDISC
, &t
, sizeof(t
)) < 0) {
402 perror("Cannot send dump request");
407 if (rtnl_dump_filter(&rth
, print_qdisc
, stdout
) < 0) {
408 fprintf(stderr
, "Dump terminated\n");
416 int do_qdisc(int argc
, char **argv
)
419 return tc_qdisc_list(0, NULL
);
420 if (matches(*argv
, "add") == 0)
421 return tc_qdisc_modify(RTM_NEWQDISC
, NLM_F_EXCL
|NLM_F_CREATE
, argc
-1, argv
+1);
422 if (matches(*argv
, "change") == 0)
423 return tc_qdisc_modify(RTM_NEWQDISC
, 0, argc
-1, argv
+1);
424 if (matches(*argv
, "replace") == 0)
425 return tc_qdisc_modify(RTM_NEWQDISC
, NLM_F_CREATE
|NLM_F_REPLACE
, argc
-1, argv
+1);
426 if (matches(*argv
, "link") == 0)
427 return tc_qdisc_modify(RTM_NEWQDISC
, NLM_F_REPLACE
, argc
-1, argv
+1);
428 if (matches(*argv
, "delete") == 0)
429 return tc_qdisc_modify(RTM_DELQDISC
, 0, argc
-1, argv
+1);
431 if (matches(*argv
, "get") == 0)
432 return tc_qdisc_get(RTM_GETQDISC
, 0, argc
-1, argv
+1);
434 if (matches(*argv
, "list") == 0 || matches(*argv
, "show") == 0
435 || matches(*argv
, "lst") == 0)
436 return tc_qdisc_list(argc
-1, argv
+1);
437 if (matches(*argv
, "help") == 0) {
441 fprintf(stderr
, "Command \"%s\" is unknown, try \"tc qdisc help\".\n", *argv
);
445 struct tc_qdisc_block_exists_ctx
{
450 static int tc_qdisc_block_exists_cb(struct nlmsghdr
*n
, void *arg
)
452 struct tc_qdisc_block_exists_ctx
*ctx
= arg
;
453 struct tcmsg
*t
= NLMSG_DATA(n
);
454 struct rtattr
*tb
[TCA_MAX
+1];
455 int len
= n
->nlmsg_len
;
457 if (n
->nlmsg_type
!= RTM_NEWQDISC
)
460 len
-= NLMSG_LENGTH(sizeof(*t
));
464 parse_rtattr(tb
, TCA_MAX
, TCA_RTA(t
), len
);
466 if (tb
[TCA_KIND
] == NULL
)
469 if (tb
[TCA_INGRESS_BLOCK
] &&
470 RTA_PAYLOAD(tb
[TCA_INGRESS_BLOCK
]) >= sizeof(__u32
)) {
471 __u32 block
= rta_getattr_u32(tb
[TCA_INGRESS_BLOCK
]);
473 if (block
== ctx
->block_index
)
477 if (tb
[TCA_EGRESS_BLOCK
] &&
478 RTA_PAYLOAD(tb
[TCA_EGRESS_BLOCK
]) >= sizeof(__u32
)) {
479 __u32 block
= rta_getattr_u32(tb
[TCA_EGRESS_BLOCK
]);
481 if (block
== ctx
->block_index
)
487 bool tc_qdisc_block_exists(__u32 block_index
)
489 struct tc_qdisc_block_exists_ctx ctx
= { .block_index
= block_index
};
490 struct tcmsg t
= { .tcm_family
= AF_UNSPEC
};
492 if (rtnl_dump_request(&rth
, RTM_GETQDISC
, &t
, sizeof(t
)) < 0) {
493 perror("Cannot send dump request");
497 if (rtnl_dump_filter(&rth
, tc_qdisc_block_exists_cb
, &ctx
) < 0) {
498 perror("Dump terminated\n");