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git.proxmox.com Git - mirror_iproute2.git/blob - tc/q_fq.c
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
43 #include <sys/socket.h>
44 #include <netinet/in.h>
45 #include <arpa/inet.h>
52 static void explain(void)
54 fprintf(stderr
, "Usage: ... fq [ limit PACKETS ] [ flow_limit PACKETS ]\n");
55 fprintf(stderr
, " [ quantum BYTES ] [ initial_quantum BYTES ]\n");
56 fprintf(stderr
, " [ maxrate RATE ] [ buckets NUMBER ]\n");
57 fprintf(stderr
, " [ [no]pacing ] [ refill_delay TIME ]\n");
58 fprintf(stderr
, " [ orphan_mask MASK]\n");
61 static unsigned int ilog2(unsigned int val
)
73 static int fq_parse_opt(struct qdisc_util
*qu
, int argc
, char **argv
,
77 unsigned int flow_plimit
;
79 unsigned int initial_quantum
;
80 unsigned int buckets
= 0;
83 unsigned int refill_delay
;
84 unsigned int orphan_mask
;
85 bool set_plimit
= false;
86 bool set_flow_plimit
= false;
87 bool set_quantum
= false;
88 bool set_initial_quantum
= false;
89 bool set_maxrate
= false;
90 bool set_defrate
= false;
91 bool set_refill_delay
= false;
92 bool set_orphan_mask
= false;
97 if (strcmp(*argv
, "limit") == 0) {
99 if (get_unsigned(&plimit
, *argv
, 0)) {
100 fprintf(stderr
, "Illegal \"limit\"\n");
104 } else if (strcmp(*argv
, "flow_limit") == 0) {
106 if (get_unsigned(&flow_plimit
, *argv
, 0)) {
107 fprintf(stderr
, "Illegal \"flow_limit\"\n");
110 set_flow_plimit
= true;
111 } else if (strcmp(*argv
, "buckets") == 0) {
113 if (get_unsigned(&buckets
, *argv
, 0)) {
114 fprintf(stderr
, "Illegal \"buckets\"\n");
117 } else if (strcmp(*argv
, "maxrate") == 0) {
119 if (get_rate(&maxrate
, *argv
)) {
120 fprintf(stderr
, "Illegal \"maxrate\"\n");
124 } else if (strcmp(*argv
, "defrate") == 0) {
126 if (get_rate(&defrate
, *argv
)) {
127 fprintf(stderr
, "Illegal \"defrate\"\n");
131 } else if (strcmp(*argv
, "quantum") == 0) {
133 if (get_unsigned(&quantum
, *argv
, 0)) {
134 fprintf(stderr
, "Illegal \"quantum\"\n");
138 } else if (strcmp(*argv
, "initial_quantum") == 0) {
140 if (get_unsigned(&initial_quantum
, *argv
, 0)) {
141 fprintf(stderr
, "Illegal \"initial_quantum\"\n");
144 set_initial_quantum
= true;
145 } else if (strcmp(*argv
, "orphan_mask") == 0) {
147 if (get_unsigned(&orphan_mask
, *argv
, 0)) {
148 fprintf(stderr
, "Illegal \"initial_quantum\"\n");
151 set_orphan_mask
= true;
152 } else if (strcmp(*argv
, "refill_delay") == 0) {
154 if (get_time(&refill_delay
, *argv
)) {
155 fprintf(stderr
, "Illegal \"refill_delay\"\n");
158 set_refill_delay
= true;
159 } else if (strcmp(*argv
, "pacing") == 0) {
161 } else if (strcmp(*argv
, "nopacing") == 0) {
163 } else if (strcmp(*argv
, "help") == 0) {
167 fprintf(stderr
, "What is \"%s\"?\n", *argv
);
174 tail
= NLMSG_TAIL(n
);
175 addattr_l(n
, 1024, TCA_OPTIONS
, NULL
, 0);
177 unsigned int log
= ilog2(buckets
);
179 addattr_l(n
, 1024, TCA_FQ_BUCKETS_LOG
,
183 addattr_l(n
, 1024, TCA_FQ_PLIMIT
,
184 &plimit
, sizeof(plimit
));
186 addattr_l(n
, 1024, TCA_FQ_FLOW_PLIMIT
,
187 &flow_plimit
, sizeof(flow_plimit
));
189 addattr_l(n
, 1024, TCA_FQ_QUANTUM
, &quantum
, sizeof(quantum
));
190 if (set_initial_quantum
)
191 addattr_l(n
, 1024, TCA_FQ_INITIAL_QUANTUM
,
192 &initial_quantum
, sizeof(initial_quantum
));
194 addattr_l(n
, 1024, TCA_FQ_RATE_ENABLE
,
195 &pacing
, sizeof(pacing
));
197 addattr_l(n
, 1024, TCA_FQ_FLOW_MAX_RATE
,
198 &maxrate
, sizeof(maxrate
));
200 addattr_l(n
, 1024, TCA_FQ_FLOW_DEFAULT_RATE
,
201 &defrate
, sizeof(defrate
));
202 if (set_refill_delay
)
203 addattr_l(n
, 1024, TCA_FQ_FLOW_REFILL_DELAY
,
204 &refill_delay
, sizeof(refill_delay
));
206 addattr_l(n
, 1024, TCA_FQ_ORPHAN_MASK
,
207 &orphan_mask
, sizeof(refill_delay
));
208 tail
->rta_len
= (void *) NLMSG_TAIL(n
) - (void *) tail
;
212 static int fq_print_opt(struct qdisc_util
*qu
, FILE *f
, struct rtattr
*opt
)
214 struct rtattr
*tb
[TCA_FQ_MAX
+ 1];
215 unsigned int plimit
, flow_plimit
;
216 unsigned int buckets_log
;
218 unsigned int rate
, quantum
;
219 unsigned int refill_delay
;
220 unsigned int orphan_mask
;
227 parse_rtattr_nested(tb
, TCA_FQ_MAX
, opt
);
229 if (tb
[TCA_FQ_PLIMIT
] &&
230 RTA_PAYLOAD(tb
[TCA_FQ_PLIMIT
]) >= sizeof(__u32
)) {
231 plimit
= rta_getattr_u32(tb
[TCA_FQ_PLIMIT
]);
232 fprintf(f
, "limit %up ", plimit
);
234 if (tb
[TCA_FQ_FLOW_PLIMIT
] &&
235 RTA_PAYLOAD(tb
[TCA_FQ_FLOW_PLIMIT
]) >= sizeof(__u32
)) {
236 flow_plimit
= rta_getattr_u32(tb
[TCA_FQ_FLOW_PLIMIT
]);
237 fprintf(f
, "flow_limit %up ", flow_plimit
);
239 if (tb
[TCA_FQ_BUCKETS_LOG
] &&
240 RTA_PAYLOAD(tb
[TCA_FQ_BUCKETS_LOG
]) >= sizeof(__u32
)) {
241 buckets_log
= rta_getattr_u32(tb
[TCA_FQ_BUCKETS_LOG
]);
242 fprintf(f
, "buckets %u ", 1U << buckets_log
);
244 if (tb
[TCA_FQ_ORPHAN_MASK
] &&
245 RTA_PAYLOAD(tb
[TCA_FQ_ORPHAN_MASK
]) >= sizeof(__u32
)) {
246 orphan_mask
= rta_getattr_u32(tb
[TCA_FQ_ORPHAN_MASK
]);
247 fprintf(f
, "orphan_mask %u ", orphan_mask
);
249 if (tb
[TCA_FQ_RATE_ENABLE
] &&
250 RTA_PAYLOAD(tb
[TCA_FQ_RATE_ENABLE
]) >= sizeof(int)) {
251 pacing
= rta_getattr_u32(tb
[TCA_FQ_RATE_ENABLE
]);
253 fprintf(f
, "nopacing ");
255 if (tb
[TCA_FQ_QUANTUM
] &&
256 RTA_PAYLOAD(tb
[TCA_FQ_QUANTUM
]) >= sizeof(__u32
)) {
257 quantum
= rta_getattr_u32(tb
[TCA_FQ_QUANTUM
]);
258 fprintf(f
, "quantum %u ", quantum
);
260 if (tb
[TCA_FQ_INITIAL_QUANTUM
] &&
261 RTA_PAYLOAD(tb
[TCA_FQ_INITIAL_QUANTUM
]) >= sizeof(__u32
)) {
262 quantum
= rta_getattr_u32(tb
[TCA_FQ_INITIAL_QUANTUM
]);
263 fprintf(f
, "initial_quantum %u ", quantum
);
265 if (tb
[TCA_FQ_FLOW_MAX_RATE
] &&
266 RTA_PAYLOAD(tb
[TCA_FQ_FLOW_MAX_RATE
]) >= sizeof(__u32
)) {
267 rate
= rta_getattr_u32(tb
[TCA_FQ_FLOW_MAX_RATE
]);
270 fprintf(f
, "maxrate %s ", sprint_rate(rate
, b1
));
272 if (tb
[TCA_FQ_FLOW_DEFAULT_RATE
] &&
273 RTA_PAYLOAD(tb
[TCA_FQ_FLOW_DEFAULT_RATE
]) >= sizeof(__u32
)) {
274 rate
= rta_getattr_u32(tb
[TCA_FQ_FLOW_DEFAULT_RATE
]);
277 fprintf(f
, "defrate %s ", sprint_rate(rate
, b1
));
279 if (tb
[TCA_FQ_FLOW_REFILL_DELAY
] &&
280 RTA_PAYLOAD(tb
[TCA_FQ_FLOW_REFILL_DELAY
]) >= sizeof(__u32
)) {
281 refill_delay
= rta_getattr_u32(tb
[TCA_FQ_FLOW_REFILL_DELAY
]);
282 fprintf(f
, "refill_delay %s ", sprint_time(refill_delay
, b1
));
288 static int fq_print_xstats(struct qdisc_util
*qu
, FILE *f
,
289 struct rtattr
*xstats
)
291 struct tc_fq_qd_stats
*st
;
296 if (RTA_PAYLOAD(xstats
) < sizeof(*st
))
299 st
= RTA_DATA(xstats
);
301 fprintf(f
, " %u flows (%u inactive, %u throttled)",
302 st
->flows
, st
->inactive_flows
, st
->throttled_flows
);
304 if (st
->time_next_delayed_flow
> 0)
305 fprintf(f
, ", next packet delay %llu ns", st
->time_next_delayed_flow
);
307 fprintf(f
, "\n %llu gc, %llu highprio",
308 st
->gc_flows
, st
->highprio_packets
);
311 fprintf(f
, ", %llu retrans", st
->tcp_retrans
);
313 fprintf(f
, ", %llu throttled", st
->throttled
);
315 if (st
->unthrottle_latency_ns
)
316 fprintf(f
, ", %u ns latency", st
->unthrottle_latency_ns
);
318 if (st
->flows_plimit
)
319 fprintf(f
, ", %llu flows_plimit", st
->flows_plimit
);
321 if (st
->pkts_too_long
|| st
->allocation_errors
)
322 fprintf(f
, "\n %llu too long pkts, %llu alloc errors\n",
323 st
->pkts_too_long
, st
->allocation_errors
);
328 struct qdisc_util fq_qdisc_util
= {
330 .parse_qopt
= fq_parse_opt
,
331 .print_qopt
= fq_print_opt
,
332 .print_xstats
= fq_print_xstats
,