| /* |
| * Fair Queue |
| * |
| * Copyright (C) 2013-2015 Eric Dumazet <edumazet@google.com> |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The names of the authors may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * Alternatively, provided that this notice is retained in full, this |
| * software may be distributed under the terms of the GNU General |
| * Public License ("GPL") version 2, in which case the provisions of the |
| * GPL apply INSTEAD OF those given above. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| * DAMAGE. |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <sys/socket.h> |
| #include <netinet/in.h> |
| #include <arpa/inet.h> |
| #include <string.h> |
| #include <stdbool.h> |
| |
| #include "utils.h" |
| #include "tc_util.h" |
| |
| static void explain(void) |
| { |
| fprintf(stderr, |
| "Usage: ... fq [ limit PACKETS ] [ flow_limit PACKETS ]\n" |
| " [ quantum BYTES ] [ initial_quantum BYTES ]\n" |
| " [ maxrate RATE ] [ buckets NUMBER ]\n" |
| " [ [no]pacing ] [ refill_delay TIME ]\n" |
| " [ low_rate_threshold RATE ]\n" |
| " [ orphan_mask MASK]\n" |
| " [ timer_slack TIME]\n" |
| " [ ce_threshold TIME ]\n" |
| " [ horizon TIME ]\n" |
| " [ horizon_{cap|drop} ]\n"); |
| } |
| |
| static unsigned int ilog2(unsigned int val) |
| { |
| unsigned int res = 0; |
| |
| val--; |
| while (val) { |
| res++; |
| val >>= 1; |
| } |
| return res; |
| } |
| |
| static int fq_parse_opt(struct qdisc_util *qu, int argc, char **argv, |
| struct nlmsghdr *n, const char *dev) |
| { |
| unsigned int plimit; |
| unsigned int flow_plimit; |
| unsigned int quantum; |
| unsigned int initial_quantum; |
| unsigned int buckets = 0; |
| unsigned int maxrate; |
| unsigned int low_rate_threshold; |
| unsigned int defrate; |
| unsigned int refill_delay; |
| unsigned int orphan_mask; |
| unsigned int ce_threshold; |
| unsigned int timer_slack; |
| unsigned int horizon; |
| __u8 horizon_drop = 255; |
| bool set_plimit = false; |
| bool set_flow_plimit = false; |
| bool set_quantum = false; |
| bool set_initial_quantum = false; |
| bool set_maxrate = false; |
| bool set_defrate = false; |
| bool set_refill_delay = false; |
| bool set_orphan_mask = false; |
| bool set_low_rate_threshold = false; |
| bool set_ce_threshold = false; |
| bool set_timer_slack = false; |
| bool set_horizon = false; |
| int pacing = -1; |
| struct rtattr *tail; |
| |
| while (argc > 0) { |
| if (strcmp(*argv, "limit") == 0) { |
| NEXT_ARG(); |
| if (get_unsigned(&plimit, *argv, 0)) { |
| fprintf(stderr, "Illegal \"limit\"\n"); |
| return -1; |
| } |
| set_plimit = true; |
| } else if (strcmp(*argv, "flow_limit") == 0) { |
| NEXT_ARG(); |
| if (get_unsigned(&flow_plimit, *argv, 0)) { |
| fprintf(stderr, "Illegal \"flow_limit\"\n"); |
| return -1; |
| } |
| set_flow_plimit = true; |
| } else if (strcmp(*argv, "buckets") == 0) { |
| NEXT_ARG(); |
| if (get_unsigned(&buckets, *argv, 0)) { |
| fprintf(stderr, "Illegal \"buckets\"\n"); |
| return -1; |
| } |
| } else if (strcmp(*argv, "maxrate") == 0) { |
| NEXT_ARG(); |
| if (strchr(*argv, '%')) { |
| if (get_percent_rate(&maxrate, *argv, dev)) { |
| fprintf(stderr, "Illegal \"maxrate\"\n"); |
| return -1; |
| } |
| } else if (get_rate(&maxrate, *argv)) { |
| fprintf(stderr, "Illegal \"maxrate\"\n"); |
| return -1; |
| } |
| set_maxrate = true; |
| } else if (strcmp(*argv, "low_rate_threshold") == 0) { |
| NEXT_ARG(); |
| if (get_rate(&low_rate_threshold, *argv)) { |
| fprintf(stderr, "Illegal \"low_rate_threshold\"\n"); |
| return -1; |
| } |
| set_low_rate_threshold = true; |
| } else if (strcmp(*argv, "ce_threshold") == 0) { |
| NEXT_ARG(); |
| if (get_time(&ce_threshold, *argv)) { |
| fprintf(stderr, "Illegal \"ce_threshold\"\n"); |
| return -1; |
| } |
| set_ce_threshold = true; |
| } else if (strcmp(*argv, "timer_slack") == 0) { |
| __s64 t64; |
| |
| NEXT_ARG(); |
| if (get_time64(&t64, *argv)) { |
| fprintf(stderr, "Illegal \"timer_slack\"\n"); |
| return -1; |
| } |
| timer_slack = t64; |
| if (timer_slack != t64) { |
| fprintf(stderr, "Illegal (out of range) \"timer_slack\"\n"); |
| return -1; |
| } |
| set_timer_slack = true; |
| } else if (strcmp(*argv, "horizon_drop") == 0) { |
| horizon_drop = 1; |
| } else if (strcmp(*argv, "horizon_cap") == 0) { |
| horizon_drop = 0; |
| } else if (strcmp(*argv, "horizon") == 0) { |
| NEXT_ARG(); |
| if (get_time(&horizon, *argv)) { |
| fprintf(stderr, "Illegal \"horizon\"\n"); |
| return -1; |
| } |
| set_horizon = true; |
| } else if (strcmp(*argv, "defrate") == 0) { |
| NEXT_ARG(); |
| if (strchr(*argv, '%')) { |
| if (get_percent_rate(&defrate, *argv, dev)) { |
| fprintf(stderr, "Illegal \"defrate\"\n"); |
| return -1; |
| } |
| } else if (get_rate(&defrate, *argv)) { |
| fprintf(stderr, "Illegal \"defrate\"\n"); |
| return -1; |
| } |
| set_defrate = true; |
| } else if (strcmp(*argv, "quantum") == 0) { |
| NEXT_ARG(); |
| if (get_unsigned(&quantum, *argv, 0)) { |
| fprintf(stderr, "Illegal \"quantum\"\n"); |
| return -1; |
| } |
| set_quantum = true; |
| } else if (strcmp(*argv, "initial_quantum") == 0) { |
| NEXT_ARG(); |
| if (get_unsigned(&initial_quantum, *argv, 0)) { |
| fprintf(stderr, "Illegal \"initial_quantum\"\n"); |
| return -1; |
| } |
| set_initial_quantum = true; |
| } else if (strcmp(*argv, "orphan_mask") == 0) { |
| NEXT_ARG(); |
| if (get_unsigned(&orphan_mask, *argv, 0)) { |
| fprintf(stderr, "Illegal \"initial_quantum\"\n"); |
| return -1; |
| } |
| set_orphan_mask = true; |
| } else if (strcmp(*argv, "refill_delay") == 0) { |
| NEXT_ARG(); |
| if (get_time(&refill_delay, *argv)) { |
| fprintf(stderr, "Illegal \"refill_delay\"\n"); |
| return -1; |
| } |
| set_refill_delay = true; |
| } else if (strcmp(*argv, "pacing") == 0) { |
| pacing = 1; |
| } else if (strcmp(*argv, "nopacing") == 0) { |
| pacing = 0; |
| } else if (strcmp(*argv, "help") == 0) { |
| explain(); |
| return -1; |
| } else { |
| fprintf(stderr, "What is \"%s\"?\n", *argv); |
| explain(); |
| return -1; |
| } |
| argc--; argv++; |
| } |
| |
| tail = addattr_nest(n, 1024, TCA_OPTIONS); |
| if (buckets) { |
| unsigned int log = ilog2(buckets); |
| |
| addattr_l(n, 1024, TCA_FQ_BUCKETS_LOG, |
| &log, sizeof(log)); |
| } |
| if (set_plimit) |
| addattr_l(n, 1024, TCA_FQ_PLIMIT, |
| &plimit, sizeof(plimit)); |
| if (set_flow_plimit) |
| addattr_l(n, 1024, TCA_FQ_FLOW_PLIMIT, |
| &flow_plimit, sizeof(flow_plimit)); |
| if (set_quantum) |
| addattr_l(n, 1024, TCA_FQ_QUANTUM, &quantum, sizeof(quantum)); |
| if (set_initial_quantum) |
| addattr_l(n, 1024, TCA_FQ_INITIAL_QUANTUM, |
| &initial_quantum, sizeof(initial_quantum)); |
| if (pacing != -1) |
| addattr_l(n, 1024, TCA_FQ_RATE_ENABLE, |
| &pacing, sizeof(pacing)); |
| if (set_maxrate) |
| addattr_l(n, 1024, TCA_FQ_FLOW_MAX_RATE, |
| &maxrate, sizeof(maxrate)); |
| if (set_low_rate_threshold) |
| addattr_l(n, 1024, TCA_FQ_LOW_RATE_THRESHOLD, |
| &low_rate_threshold, sizeof(low_rate_threshold)); |
| if (set_defrate) |
| addattr_l(n, 1024, TCA_FQ_FLOW_DEFAULT_RATE, |
| &defrate, sizeof(defrate)); |
| if (set_refill_delay) |
| addattr_l(n, 1024, TCA_FQ_FLOW_REFILL_DELAY, |
| &refill_delay, sizeof(refill_delay)); |
| if (set_orphan_mask) |
| addattr_l(n, 1024, TCA_FQ_ORPHAN_MASK, |
| &orphan_mask, sizeof(orphan_mask)); |
| if (set_ce_threshold) |
| addattr_l(n, 1024, TCA_FQ_CE_THRESHOLD, |
| &ce_threshold, sizeof(ce_threshold)); |
| if (set_timer_slack) |
| addattr_l(n, 1024, TCA_FQ_TIMER_SLACK, |
| &timer_slack, sizeof(timer_slack)); |
| if (set_horizon) |
| addattr_l(n, 1024, TCA_FQ_HORIZON, |
| &horizon, sizeof(horizon)); |
| if (horizon_drop != 255) |
| addattr_l(n, 1024, TCA_FQ_HORIZON_DROP, |
| &horizon_drop, sizeof(horizon_drop)); |
| addattr_nest_end(n, tail); |
| return 0; |
| } |
| |
| static int fq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) |
| { |
| struct rtattr *tb[TCA_FQ_MAX + 1]; |
| unsigned int plimit, flow_plimit; |
| unsigned int buckets_log; |
| int pacing; |
| unsigned int rate, quantum; |
| unsigned int refill_delay; |
| unsigned int orphan_mask; |
| unsigned int ce_threshold; |
| unsigned int timer_slack; |
| unsigned int horizon; |
| __u8 horizon_drop; |
| |
| SPRINT_BUF(b1); |
| |
| if (opt == NULL) |
| return 0; |
| |
| parse_rtattr_nested(tb, TCA_FQ_MAX, opt); |
| |
| if (tb[TCA_FQ_PLIMIT] && |
| RTA_PAYLOAD(tb[TCA_FQ_PLIMIT]) >= sizeof(__u32)) { |
| plimit = rta_getattr_u32(tb[TCA_FQ_PLIMIT]); |
| print_uint(PRINT_ANY, "limit", "limit %up ", plimit); |
| } |
| if (tb[TCA_FQ_FLOW_PLIMIT] && |
| RTA_PAYLOAD(tb[TCA_FQ_FLOW_PLIMIT]) >= sizeof(__u32)) { |
| flow_plimit = rta_getattr_u32(tb[TCA_FQ_FLOW_PLIMIT]); |
| print_uint(PRINT_ANY, "flow_limit", "flow_limit %up ", |
| flow_plimit); |
| } |
| if (tb[TCA_FQ_BUCKETS_LOG] && |
| RTA_PAYLOAD(tb[TCA_FQ_BUCKETS_LOG]) >= sizeof(__u32)) { |
| buckets_log = rta_getattr_u32(tb[TCA_FQ_BUCKETS_LOG]); |
| print_uint(PRINT_ANY, "buckets", "buckets %u ", |
| 1U << buckets_log); |
| } |
| if (tb[TCA_FQ_ORPHAN_MASK] && |
| RTA_PAYLOAD(tb[TCA_FQ_ORPHAN_MASK]) >= sizeof(__u32)) { |
| orphan_mask = rta_getattr_u32(tb[TCA_FQ_ORPHAN_MASK]); |
| print_uint(PRINT_ANY, "orphan_mask", "orphan_mask %u ", |
| orphan_mask); |
| } |
| if (tb[TCA_FQ_RATE_ENABLE] && |
| RTA_PAYLOAD(tb[TCA_FQ_RATE_ENABLE]) >= sizeof(int)) { |
| pacing = rta_getattr_u32(tb[TCA_FQ_RATE_ENABLE]); |
| if (pacing == 0) |
| print_bool(PRINT_ANY, "pacing", "nopacing ", false); |
| } |
| if (tb[TCA_FQ_QUANTUM] && |
| RTA_PAYLOAD(tb[TCA_FQ_QUANTUM]) >= sizeof(__u32)) { |
| quantum = rta_getattr_u32(tb[TCA_FQ_QUANTUM]); |
| print_size(PRINT_ANY, "quantum", "quantum %s ", quantum); |
| } |
| if (tb[TCA_FQ_INITIAL_QUANTUM] && |
| RTA_PAYLOAD(tb[TCA_FQ_INITIAL_QUANTUM]) >= sizeof(__u32)) { |
| quantum = rta_getattr_u32(tb[TCA_FQ_INITIAL_QUANTUM]); |
| print_size(PRINT_ANY, "initial_quantum", "initial_quantum %s ", |
| quantum); |
| } |
| if (tb[TCA_FQ_FLOW_MAX_RATE] && |
| RTA_PAYLOAD(tb[TCA_FQ_FLOW_MAX_RATE]) >= sizeof(__u32)) { |
| rate = rta_getattr_u32(tb[TCA_FQ_FLOW_MAX_RATE]); |
| |
| if (rate != ~0U) |
| tc_print_rate(PRINT_ANY, |
| "maxrate", "maxrate %s ", rate); |
| } |
| if (tb[TCA_FQ_FLOW_DEFAULT_RATE] && |
| RTA_PAYLOAD(tb[TCA_FQ_FLOW_DEFAULT_RATE]) >= sizeof(__u32)) { |
| rate = rta_getattr_u32(tb[TCA_FQ_FLOW_DEFAULT_RATE]); |
| |
| if (rate != 0) |
| tc_print_rate(PRINT_ANY, |
| "defrate", "defrate %s ", rate); |
| } |
| if (tb[TCA_FQ_LOW_RATE_THRESHOLD] && |
| RTA_PAYLOAD(tb[TCA_FQ_LOW_RATE_THRESHOLD]) >= sizeof(__u32)) { |
| rate = rta_getattr_u32(tb[TCA_FQ_LOW_RATE_THRESHOLD]); |
| |
| if (rate != 0) |
| tc_print_rate(PRINT_ANY, "low_rate_threshold", |
| "low_rate_threshold %s ", rate); |
| } |
| if (tb[TCA_FQ_FLOW_REFILL_DELAY] && |
| RTA_PAYLOAD(tb[TCA_FQ_FLOW_REFILL_DELAY]) >= sizeof(__u32)) { |
| refill_delay = rta_getattr_u32(tb[TCA_FQ_FLOW_REFILL_DELAY]); |
| print_uint(PRINT_JSON, "refill_delay", NULL, refill_delay); |
| print_string(PRINT_FP, NULL, "refill_delay %s ", |
| sprint_time(refill_delay, b1)); |
| } |
| |
| if (tb[TCA_FQ_CE_THRESHOLD] && |
| RTA_PAYLOAD(tb[TCA_FQ_CE_THRESHOLD]) >= sizeof(__u32)) { |
| ce_threshold = rta_getattr_u32(tb[TCA_FQ_CE_THRESHOLD]); |
| if (ce_threshold != ~0U) { |
| print_uint(PRINT_JSON, "ce_threshold", NULL, |
| ce_threshold); |
| print_string(PRINT_FP, NULL, "ce_threshold %s ", |
| sprint_time(ce_threshold, b1)); |
| } |
| } |
| |
| if (tb[TCA_FQ_TIMER_SLACK] && |
| RTA_PAYLOAD(tb[TCA_FQ_TIMER_SLACK]) >= sizeof(__u32)) { |
| timer_slack = rta_getattr_u32(tb[TCA_FQ_TIMER_SLACK]); |
| print_uint(PRINT_JSON, "timer_slack", NULL, timer_slack); |
| print_string(PRINT_FP, NULL, "timer_slack %s ", |
| sprint_time64(timer_slack, b1)); |
| } |
| |
| if (tb[TCA_FQ_HORIZON] && |
| RTA_PAYLOAD(tb[TCA_FQ_HORIZON]) >= sizeof(__u32)) { |
| horizon = rta_getattr_u32(tb[TCA_FQ_HORIZON]); |
| print_uint(PRINT_JSON, "horizon", NULL, horizon); |
| print_string(PRINT_FP, NULL, "horizon %s ", |
| sprint_time(horizon, b1)); |
| } |
| |
| if (tb[TCA_FQ_HORIZON_DROP] && |
| RTA_PAYLOAD(tb[TCA_FQ_HORIZON_DROP]) >= sizeof(__u8)) { |
| horizon_drop = rta_getattr_u8(tb[TCA_FQ_HORIZON_DROP]); |
| if (!horizon_drop) |
| print_null(PRINT_ANY, "horizon_cap", "horizon_cap ", NULL); |
| else |
| print_null(PRINT_ANY, "horizon_drop", "horizon_drop ", NULL); |
| } |
| |
| return 0; |
| } |
| |
| static int fq_print_xstats(struct qdisc_util *qu, FILE *f, |
| struct rtattr *xstats) |
| { |
| struct tc_fq_qd_stats *st, _st; |
| |
| SPRINT_BUF(b1); |
| |
| if (xstats == NULL) |
| return 0; |
| |
| memset(&_st, 0, sizeof(_st)); |
| memcpy(&_st, RTA_DATA(xstats), min(RTA_PAYLOAD(xstats), sizeof(*st))); |
| |
| st = &_st; |
| |
| print_uint(PRINT_ANY, "flows", " flows %u", st->flows); |
| print_uint(PRINT_ANY, "inactive", " (inactive %u", st->inactive_flows); |
| print_uint(PRINT_ANY, "throttled", " throttled %u)", |
| st->throttled_flows); |
| |
| if (st->time_next_delayed_flow > 0) { |
| print_lluint(PRINT_JSON, "next_packet_delay", NULL, |
| st->time_next_delayed_flow); |
| print_string(PRINT_FP, NULL, " next_packet_delay %s", |
| sprint_time64(st->time_next_delayed_flow, b1)); |
| } |
| |
| print_nl(); |
| print_lluint(PRINT_ANY, "gc", " gc %llu", st->gc_flows); |
| print_lluint(PRINT_ANY, "highprio", " highprio %llu", |
| st->highprio_packets); |
| |
| if (st->tcp_retrans) |
| print_lluint(PRINT_ANY, "retrans", " retrans %llu", |
| st->tcp_retrans); |
| |
| print_lluint(PRINT_ANY, "throttled", " throttled %llu", st->throttled); |
| |
| if (st->unthrottle_latency_ns) { |
| print_uint(PRINT_JSON, "latency", NULL, |
| st->unthrottle_latency_ns); |
| print_string(PRINT_FP, NULL, " latency %s", |
| sprint_time64(st->unthrottle_latency_ns, b1)); |
| } |
| |
| if (st->ce_mark) |
| print_lluint(PRINT_ANY, "ce_mark", " ce_mark %llu", |
| st->ce_mark); |
| |
| if (st->flows_plimit) |
| print_lluint(PRINT_ANY, "flows_plimit", " flows_plimit %llu", |
| st->flows_plimit); |
| |
| if (st->pkts_too_long || st->allocation_errors || |
| st->horizon_drops || st->horizon_caps) { |
| print_nl(); |
| if (st->pkts_too_long) |
| print_lluint(PRINT_ANY, "pkts_too_long", |
| " pkts_too_long %llu", |
| st->pkts_too_long); |
| if (st->allocation_errors) |
| print_lluint(PRINT_ANY, "alloc_errors", |
| " alloc_errors %llu", |
| st->allocation_errors); |
| if (st->horizon_drops) |
| print_lluint(PRINT_ANY, "horizon_drops", |
| " horizon_drops %llu", |
| st->horizon_drops); |
| if (st->horizon_caps) |
| print_lluint(PRINT_ANY, "horizon_caps", |
| " horizon_caps %llu", |
| st->horizon_caps); |
| } |
| |
| return 0; |
| } |
| |
| struct qdisc_util fq_qdisc_util = { |
| .id = "fq", |
| .parse_qopt = fq_parse_opt, |
| .print_qopt = fq_print_opt, |
| .print_xstats = fq_print_xstats, |
| }; |
