4 * Copyright (C) 2013-2015 Eric Dumazet <edumazet@google.com>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions, and the following disclaimer,
11 * without modification.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The names of the authors may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * Alternatively, provided that this notice is retained in full, this
19 * software may be distributed under the terms of the GNU General
20 * Public License ("GPL") version 2, in which case the provisions of the
21 * GPL apply INSTEAD OF those given above.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
29 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
42 #include <sys/socket.h>
43 #include <netinet/in.h>
44 #include <arpa/inet.h>
51 static void explain(void)
53 fprintf(stderr
, "Usage: ... fq [ limit PACKETS ] [ flow_limit PACKETS ]\n");
54 fprintf(stderr
, " [ quantum BYTES ] [ initial_quantum BYTES ]\n");
55 fprintf(stderr
, " [ maxrate RATE ] [ buckets NUMBER ]\n");
56 fprintf(stderr
, " [ [no]pacing ] [ refill_delay TIME ]\n");
57 fprintf(stderr
, " [ low_rate_threshold RATE ]\n");
58 fprintf(stderr
, " [ orphan_mask MASK]\n");
59 fprintf(stderr
, " [ ce_threshold TIME ]\n");
62 static unsigned int ilog2(unsigned int val
)
74 static int fq_parse_opt(struct qdisc_util
*qu
, int argc
, char **argv
,
75 struct nlmsghdr
*n
, const char *dev
)
78 unsigned int flow_plimit
;
80 unsigned int initial_quantum
;
81 unsigned int buckets
= 0;
83 unsigned int low_rate_threshold
;
85 unsigned int refill_delay
;
86 unsigned int orphan_mask
;
87 unsigned int ce_threshold
;
88 bool set_plimit
= false;
89 bool set_flow_plimit
= false;
90 bool set_quantum
= false;
91 bool set_initial_quantum
= false;
92 bool set_maxrate
= false;
93 bool set_defrate
= false;
94 bool set_refill_delay
= false;
95 bool set_orphan_mask
= false;
96 bool set_low_rate_threshold
= false;
97 bool set_ce_threshold
= false;
102 if (strcmp(*argv
, "limit") == 0) {
104 if (get_unsigned(&plimit
, *argv
, 0)) {
105 fprintf(stderr
, "Illegal \"limit\"\n");
109 } else if (strcmp(*argv
, "flow_limit") == 0) {
111 if (get_unsigned(&flow_plimit
, *argv
, 0)) {
112 fprintf(stderr
, "Illegal \"flow_limit\"\n");
115 set_flow_plimit
= true;
116 } else if (strcmp(*argv
, "buckets") == 0) {
118 if (get_unsigned(&buckets
, *argv
, 0)) {
119 fprintf(stderr
, "Illegal \"buckets\"\n");
122 } else if (strcmp(*argv
, "maxrate") == 0) {
124 if (strchr(*argv
, '%')) {
125 if (get_percent_rate(&maxrate
, *argv
, dev
)) {
126 fprintf(stderr
, "Illegal \"maxrate\"\n");
129 } else if (get_rate(&maxrate
, *argv
)) {
130 fprintf(stderr
, "Illegal \"maxrate\"\n");
134 } else if (strcmp(*argv
, "low_rate_threshold") == 0) {
136 if (get_rate(&low_rate_threshold
, *argv
)) {
137 fprintf(stderr
, "Illegal \"low_rate_threshold\"\n");
140 set_low_rate_threshold
= true;
141 } else if (strcmp(*argv
, "ce_threshold") == 0) {
143 if (get_time(&ce_threshold
, *argv
)) {
144 fprintf(stderr
, "Illegal \"ce_threshold\"\n");
147 set_ce_threshold
= true;
148 } else if (strcmp(*argv
, "defrate") == 0) {
150 if (strchr(*argv
, '%')) {
151 if (get_percent_rate(&defrate
, *argv
, dev
)) {
152 fprintf(stderr
, "Illegal \"defrate\"\n");
155 } else if (get_rate(&defrate
, *argv
)) {
156 fprintf(stderr
, "Illegal \"defrate\"\n");
160 } else if (strcmp(*argv
, "quantum") == 0) {
162 if (get_unsigned(&quantum
, *argv
, 0)) {
163 fprintf(stderr
, "Illegal \"quantum\"\n");
167 } else if (strcmp(*argv
, "initial_quantum") == 0) {
169 if (get_unsigned(&initial_quantum
, *argv
, 0)) {
170 fprintf(stderr
, "Illegal \"initial_quantum\"\n");
173 set_initial_quantum
= true;
174 } else if (strcmp(*argv
, "orphan_mask") == 0) {
176 if (get_unsigned(&orphan_mask
, *argv
, 0)) {
177 fprintf(stderr
, "Illegal \"initial_quantum\"\n");
180 set_orphan_mask
= true;
181 } else if (strcmp(*argv
, "refill_delay") == 0) {
183 if (get_time(&refill_delay
, *argv
)) {
184 fprintf(stderr
, "Illegal \"refill_delay\"\n");
187 set_refill_delay
= true;
188 } else if (strcmp(*argv
, "pacing") == 0) {
190 } else if (strcmp(*argv
, "nopacing") == 0) {
192 } else if (strcmp(*argv
, "help") == 0) {
196 fprintf(stderr
, "What is \"%s\"?\n", *argv
);
203 tail
= addattr_nest(n
, 1024, TCA_OPTIONS
);
205 unsigned int log
= ilog2(buckets
);
207 addattr_l(n
, 1024, TCA_FQ_BUCKETS_LOG
,
211 addattr_l(n
, 1024, TCA_FQ_PLIMIT
,
212 &plimit
, sizeof(plimit
));
214 addattr_l(n
, 1024, TCA_FQ_FLOW_PLIMIT
,
215 &flow_plimit
, sizeof(flow_plimit
));
217 addattr_l(n
, 1024, TCA_FQ_QUANTUM
, &quantum
, sizeof(quantum
));
218 if (set_initial_quantum
)
219 addattr_l(n
, 1024, TCA_FQ_INITIAL_QUANTUM
,
220 &initial_quantum
, sizeof(initial_quantum
));
222 addattr_l(n
, 1024, TCA_FQ_RATE_ENABLE
,
223 &pacing
, sizeof(pacing
));
225 addattr_l(n
, 1024, TCA_FQ_FLOW_MAX_RATE
,
226 &maxrate
, sizeof(maxrate
));
227 if (set_low_rate_threshold
)
228 addattr_l(n
, 1024, TCA_FQ_LOW_RATE_THRESHOLD
,
229 &low_rate_threshold
, sizeof(low_rate_threshold
));
231 addattr_l(n
, 1024, TCA_FQ_FLOW_DEFAULT_RATE
,
232 &defrate
, sizeof(defrate
));
233 if (set_refill_delay
)
234 addattr_l(n
, 1024, TCA_FQ_FLOW_REFILL_DELAY
,
235 &refill_delay
, sizeof(refill_delay
));
237 addattr_l(n
, 1024, TCA_FQ_ORPHAN_MASK
,
238 &orphan_mask
, sizeof(refill_delay
));
239 if (set_ce_threshold
)
240 addattr_l(n
, 1024, TCA_FQ_CE_THRESHOLD
,
241 &ce_threshold
, sizeof(ce_threshold
));
242 addattr_nest_end(n
, tail
);
246 static int fq_print_opt(struct qdisc_util
*qu
, FILE *f
, struct rtattr
*opt
)
248 struct rtattr
*tb
[TCA_FQ_MAX
+ 1];
249 unsigned int plimit
, flow_plimit
;
250 unsigned int buckets_log
;
252 unsigned int rate
, quantum
;
253 unsigned int refill_delay
;
254 unsigned int orphan_mask
;
255 unsigned int ce_threshold
;
262 parse_rtattr_nested(tb
, TCA_FQ_MAX
, opt
);
264 if (tb
[TCA_FQ_PLIMIT
] &&
265 RTA_PAYLOAD(tb
[TCA_FQ_PLIMIT
]) >= sizeof(__u32
)) {
266 plimit
= rta_getattr_u32(tb
[TCA_FQ_PLIMIT
]);
267 fprintf(f
, "limit %up ", plimit
);
269 if (tb
[TCA_FQ_FLOW_PLIMIT
] &&
270 RTA_PAYLOAD(tb
[TCA_FQ_FLOW_PLIMIT
]) >= sizeof(__u32
)) {
271 flow_plimit
= rta_getattr_u32(tb
[TCA_FQ_FLOW_PLIMIT
]);
272 fprintf(f
, "flow_limit %up ", flow_plimit
);
274 if (tb
[TCA_FQ_BUCKETS_LOG
] &&
275 RTA_PAYLOAD(tb
[TCA_FQ_BUCKETS_LOG
]) >= sizeof(__u32
)) {
276 buckets_log
= rta_getattr_u32(tb
[TCA_FQ_BUCKETS_LOG
]);
277 fprintf(f
, "buckets %u ", 1U << buckets_log
);
279 if (tb
[TCA_FQ_ORPHAN_MASK
] &&
280 RTA_PAYLOAD(tb
[TCA_FQ_ORPHAN_MASK
]) >= sizeof(__u32
)) {
281 orphan_mask
= rta_getattr_u32(tb
[TCA_FQ_ORPHAN_MASK
]);
282 fprintf(f
, "orphan_mask %u ", orphan_mask
);
284 if (tb
[TCA_FQ_RATE_ENABLE
] &&
285 RTA_PAYLOAD(tb
[TCA_FQ_RATE_ENABLE
]) >= sizeof(int)) {
286 pacing
= rta_getattr_u32(tb
[TCA_FQ_RATE_ENABLE
]);
288 fprintf(f
, "nopacing ");
290 if (tb
[TCA_FQ_QUANTUM
] &&
291 RTA_PAYLOAD(tb
[TCA_FQ_QUANTUM
]) >= sizeof(__u32
)) {
292 quantum
= rta_getattr_u32(tb
[TCA_FQ_QUANTUM
]);
293 fprintf(f
, "quantum %u ", quantum
);
295 if (tb
[TCA_FQ_INITIAL_QUANTUM
] &&
296 RTA_PAYLOAD(tb
[TCA_FQ_INITIAL_QUANTUM
]) >= sizeof(__u32
)) {
297 quantum
= rta_getattr_u32(tb
[TCA_FQ_INITIAL_QUANTUM
]);
298 fprintf(f
, "initial_quantum %u ", quantum
);
300 if (tb
[TCA_FQ_FLOW_MAX_RATE
] &&
301 RTA_PAYLOAD(tb
[TCA_FQ_FLOW_MAX_RATE
]) >= sizeof(__u32
)) {
302 rate
= rta_getattr_u32(tb
[TCA_FQ_FLOW_MAX_RATE
]);
305 fprintf(f
, "maxrate %s ", sprint_rate(rate
, b1
));
307 if (tb
[TCA_FQ_FLOW_DEFAULT_RATE
] &&
308 RTA_PAYLOAD(tb
[TCA_FQ_FLOW_DEFAULT_RATE
]) >= sizeof(__u32
)) {
309 rate
= rta_getattr_u32(tb
[TCA_FQ_FLOW_DEFAULT_RATE
]);
312 fprintf(f
, "defrate %s ", sprint_rate(rate
, b1
));
314 if (tb
[TCA_FQ_LOW_RATE_THRESHOLD
] &&
315 RTA_PAYLOAD(tb
[TCA_FQ_LOW_RATE_THRESHOLD
]) >= sizeof(__u32
)) {
316 rate
= rta_getattr_u32(tb
[TCA_FQ_LOW_RATE_THRESHOLD
]);
319 fprintf(f
, "low_rate_threshold %s ", sprint_rate(rate
, b1
));
321 if (tb
[TCA_FQ_FLOW_REFILL_DELAY
] &&
322 RTA_PAYLOAD(tb
[TCA_FQ_FLOW_REFILL_DELAY
]) >= sizeof(__u32
)) {
323 refill_delay
= rta_getattr_u32(tb
[TCA_FQ_FLOW_REFILL_DELAY
]);
324 fprintf(f
, "refill_delay %s ", sprint_time(refill_delay
, b1
));
327 if (tb
[TCA_FQ_CE_THRESHOLD
] &&
328 RTA_PAYLOAD(tb
[TCA_FQ_CE_THRESHOLD
]) >= sizeof(__u32
)) {
329 ce_threshold
= rta_getattr_u32(tb
[TCA_FQ_CE_THRESHOLD
]);
330 if (ce_threshold
!= ~0U)
331 fprintf(f
, "ce_threshold %s ", sprint_time(ce_threshold
, b1
));
337 static int fq_print_xstats(struct qdisc_util
*qu
, FILE *f
,
338 struct rtattr
*xstats
)
340 struct tc_fq_qd_stats
*st
, _st
;
345 memset(&_st
, 0, sizeof(_st
));
346 memcpy(&_st
, RTA_DATA(xstats
), min(RTA_PAYLOAD(xstats
), sizeof(*st
)));
350 fprintf(f
, " %u flows (%u inactive, %u throttled)",
351 st
->flows
, st
->inactive_flows
, st
->throttled_flows
);
353 if (st
->time_next_delayed_flow
> 0)
354 fprintf(f
, ", next packet delay %llu ns", st
->time_next_delayed_flow
);
356 fprintf(f
, "\n %llu gc, %llu highprio",
357 st
->gc_flows
, st
->highprio_packets
);
360 fprintf(f
, ", %llu retrans", st
->tcp_retrans
);
362 fprintf(f
, ", %llu throttled", st
->throttled
);
364 if (st
->unthrottle_latency_ns
)
365 fprintf(f
, ", %u ns latency", st
->unthrottle_latency_ns
);
368 fprintf(f
, ", %llu ce_mark", st
->ce_mark
);
370 if (st
->flows_plimit
)
371 fprintf(f
, ", %llu flows_plimit", st
->flows_plimit
);
373 if (st
->pkts_too_long
|| st
->allocation_errors
)
374 fprintf(f
, "\n %llu too long pkts, %llu alloc errors\n",
375 st
->pkts_too_long
, st
->allocation_errors
);
380 struct qdisc_util fq_qdisc_util
= {
382 .parse_qopt
= fq_parse_opt
,
383 .print_qopt
= fq_print_opt
,
384 .print_xstats
= fq_print_xstats
,