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Diffstat (limited to '')
| -rw-r--r-- | tc/q_fq_codel.c | 355 |
1 files changed, 355 insertions, 0 deletions
diff --git a/tc/q_fq_codel.c b/tc/q_fq_codel.c new file mode 100644 index 0000000..b7552e2 --- /dev/null +++ b/tc/q_fq_codel.c @@ -0,0 +1,355 @@ +/* + * Fair Queue Codel + * + * Copyright (C) 2012,2015 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 "utils.h" +#include "tc_util.h" + +static void explain(void) +{ + fprintf(stderr, + "Usage: ... fq_codel [ limit PACKETS ] [ flows NUMBER ]\n" + "[ memory_limit BYTES ]\n" + "[ target TIME ] [ interval TIME ]\n" + "[ quantum BYTES ] [ [no]ecn ]\n" + "[ ce_threshold TIME ]\n" + "[ ce_threshold_selector VALUE/MASK ]\n" + "[ drop_batch SIZE ]\n"); +} + +static int fq_codel_parse_opt(struct qdisc_util *qu, int argc, char **argv, + struct nlmsghdr *n, const char *dev) +{ + unsigned int drop_batch = 0; + unsigned int limit = 0; + unsigned int flows = 0; + unsigned int target = 0; + unsigned int interval = 0; + unsigned int quantum = 0; + unsigned int ce_threshold = ~0U; + unsigned int memory = ~0U; + __u8 ce_threshold_mask = 0; + __u8 ce_threshold_selector = 0xFF; + int ecn = -1; + struct rtattr *tail; + + while (argc > 0) { + if (strcmp(*argv, "limit") == 0) { + NEXT_ARG(); + if (get_unsigned(&limit, *argv, 0)) { + fprintf(stderr, "Illegal \"limit\"\n"); + return -1; + } + } else if (strcmp(*argv, "flows") == 0) { + NEXT_ARG(); + if (get_unsigned(&flows, *argv, 0)) { + fprintf(stderr, "Illegal \"flows\"\n"); + return -1; + } + } else if (strcmp(*argv, "quantum") == 0) { + NEXT_ARG(); + if (get_unsigned(&quantum, *argv, 0)) { + fprintf(stderr, "Illegal \"quantum\"\n"); + return -1; + } + } else if (strcmp(*argv, "drop_batch") == 0) { + NEXT_ARG(); + if (get_unsigned(&drop_batch, *argv, 0)) { + fprintf(stderr, "Illegal \"drop_batch\"\n"); + return -1; + } + } else if (strcmp(*argv, "target") == 0) { + NEXT_ARG(); + if (get_time(&target, *argv)) { + fprintf(stderr, "Illegal \"target\"\n"); + return -1; + } + } else if (strcmp(*argv, "ce_threshold") == 0) { + NEXT_ARG(); + if (get_time(&ce_threshold, *argv)) { + fprintf(stderr, "Illegal \"ce_threshold\"\n"); + return -1; + } + } else if (strcmp(*argv, "ce_threshold_selector") == 0) { + char *sep; + + NEXT_ARG(); + sep = strchr(*argv, '/'); + if (!sep) { + fprintf(stderr, "Missing mask for \"ce_threshold_selector\"\n"); + return -1; + } + *sep++ = '\0'; + if (get_u8(&ce_threshold_mask, sep, 0)) { + fprintf(stderr, "Illegal mask for \"ce_threshold_selector\"\n"); + return -1; + } + if (get_u8(&ce_threshold_selector, *argv, 0)) { + fprintf(stderr, "Illegal \"ce_threshold_selector\"\n"); + return -1; + } + } else if (strcmp(*argv, "memory_limit") == 0) { + NEXT_ARG(); + if (get_size(&memory, *argv)) { + fprintf(stderr, "Illegal \"memory_limit\"\n"); + return -1; + } + } else if (strcmp(*argv, "interval") == 0) { + NEXT_ARG(); + if (get_time(&interval, *argv)) { + fprintf(stderr, "Illegal \"interval\"\n"); + return -1; + } + } else if (strcmp(*argv, "ecn") == 0) { + ecn = 1; + } else if (strcmp(*argv, "noecn") == 0) { + ecn = 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 (limit) + addattr_l(n, 1024, TCA_FQ_CODEL_LIMIT, &limit, sizeof(limit)); + if (flows) + addattr_l(n, 1024, TCA_FQ_CODEL_FLOWS, &flows, sizeof(flows)); + if (quantum) + addattr_l(n, 1024, TCA_FQ_CODEL_QUANTUM, &quantum, sizeof(quantum)); + if (interval) + addattr_l(n, 1024, TCA_FQ_CODEL_INTERVAL, &interval, sizeof(interval)); + if (target) + addattr_l(n, 1024, TCA_FQ_CODEL_TARGET, &target, sizeof(target)); + if (ecn != -1) + addattr_l(n, 1024, TCA_FQ_CODEL_ECN, &ecn, sizeof(ecn)); + if (ce_threshold != ~0U) + addattr_l(n, 1024, TCA_FQ_CODEL_CE_THRESHOLD, + &ce_threshold, sizeof(ce_threshold)); + if (ce_threshold_selector != 0xFF) { + addattr8(n, 1024, TCA_FQ_CODEL_CE_THRESHOLD_MASK, ce_threshold_mask); + addattr8(n, 1024, TCA_FQ_CODEL_CE_THRESHOLD_SELECTOR, ce_threshold_selector); + } + if (memory != ~0U) + addattr_l(n, 1024, TCA_FQ_CODEL_MEMORY_LIMIT, + &memory, sizeof(memory)); + if (drop_batch) + addattr_l(n, 1024, TCA_FQ_CODEL_DROP_BATCH_SIZE, &drop_batch, sizeof(drop_batch)); + + addattr_nest_end(n, tail); + return 0; +} + +static int fq_codel_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) +{ + struct rtattr *tb[TCA_FQ_CODEL_MAX + 1]; + unsigned int limit; + unsigned int flows; + unsigned int interval; + unsigned int target; + unsigned int ecn; + unsigned int quantum; + unsigned int ce_threshold; + __u8 ce_threshold_selector = 0; + __u8 ce_threshold_mask = 0; + unsigned int memory_limit; + unsigned int drop_batch; + + SPRINT_BUF(b1); + + if (opt == NULL) + return 0; + + parse_rtattr_nested(tb, TCA_FQ_CODEL_MAX, opt); + + if (tb[TCA_FQ_CODEL_LIMIT] && + RTA_PAYLOAD(tb[TCA_FQ_CODEL_LIMIT]) >= sizeof(__u32)) { + limit = rta_getattr_u32(tb[TCA_FQ_CODEL_LIMIT]); + print_uint(PRINT_ANY, "limit", "limit %up ", limit); + } + if (tb[TCA_FQ_CODEL_FLOWS] && + RTA_PAYLOAD(tb[TCA_FQ_CODEL_FLOWS]) >= sizeof(__u32)) { + flows = rta_getattr_u32(tb[TCA_FQ_CODEL_FLOWS]); + print_uint(PRINT_ANY, "flows", "flows %u ", flows); + } + if (tb[TCA_FQ_CODEL_QUANTUM] && + RTA_PAYLOAD(tb[TCA_FQ_CODEL_QUANTUM]) >= sizeof(__u32)) { + quantum = rta_getattr_u32(tb[TCA_FQ_CODEL_QUANTUM]); + print_uint(PRINT_ANY, "quantum", "quantum %u ", quantum); + } + if (tb[TCA_FQ_CODEL_TARGET] && + RTA_PAYLOAD(tb[TCA_FQ_CODEL_TARGET]) >= sizeof(__u32)) { + target = rta_getattr_u32(tb[TCA_FQ_CODEL_TARGET]); + print_uint(PRINT_JSON, "target", NULL, target); + print_string(PRINT_FP, NULL, "target %s ", + sprint_time(target, b1)); + } + if (tb[TCA_FQ_CODEL_CE_THRESHOLD] && + RTA_PAYLOAD(tb[TCA_FQ_CODEL_CE_THRESHOLD]) >= sizeof(__u32)) { + ce_threshold = rta_getattr_u32(tb[TCA_FQ_CODEL_CE_THRESHOLD]); + 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_CODEL_CE_THRESHOLD_SELECTOR] && + RTA_PAYLOAD(tb[TCA_FQ_CODEL_CE_THRESHOLD_SELECTOR]) >= sizeof(__u8)) + ce_threshold_selector = rta_getattr_u8(tb[TCA_FQ_CODEL_CE_THRESHOLD_SELECTOR]); + if (tb[TCA_FQ_CODEL_CE_THRESHOLD_MASK] && + RTA_PAYLOAD(tb[TCA_FQ_CODEL_CE_THRESHOLD_MASK]) >= sizeof(__u8)) + ce_threshold_mask = rta_getattr_u8(tb[TCA_FQ_CODEL_CE_THRESHOLD_MASK]); + if (ce_threshold_mask || ce_threshold_selector) { + print_hhu(PRINT_ANY, "ce_threshold_selector", "ce_threshold_selector %#x", + ce_threshold_selector); + print_hhu(PRINT_ANY, "ce_threshold_mask", "/%#x ", + ce_threshold_mask); + } + + if (tb[TCA_FQ_CODEL_INTERVAL] && + RTA_PAYLOAD(tb[TCA_FQ_CODEL_INTERVAL]) >= sizeof(__u32)) { + interval = rta_getattr_u32(tb[TCA_FQ_CODEL_INTERVAL]); + print_uint(PRINT_JSON, "interval", NULL, interval); + print_string(PRINT_FP, NULL, "interval %s ", + sprint_time(interval, b1)); + } + if (tb[TCA_FQ_CODEL_MEMORY_LIMIT] && + RTA_PAYLOAD(tb[TCA_FQ_CODEL_MEMORY_LIMIT]) >= sizeof(__u32)) { + memory_limit = rta_getattr_u32(tb[TCA_FQ_CODEL_MEMORY_LIMIT]); + print_size(PRINT_ANY, "memory_limit", "memory_limit %s ", + memory_limit); + } + if (tb[TCA_FQ_CODEL_ECN] && + RTA_PAYLOAD(tb[TCA_FQ_CODEL_ECN]) >= sizeof(__u32)) { + ecn = rta_getattr_u32(tb[TCA_FQ_CODEL_ECN]); + if (ecn) + print_bool(PRINT_ANY, "ecn", "ecn ", true); + } + if (tb[TCA_FQ_CODEL_DROP_BATCH_SIZE] && + RTA_PAYLOAD(tb[TCA_FQ_CODEL_DROP_BATCH_SIZE]) >= sizeof(__u32)) { + drop_batch = rta_getattr_u32(tb[TCA_FQ_CODEL_DROP_BATCH_SIZE]); + if (drop_batch) + print_uint(PRINT_ANY, "drop_batch", "drop_batch %u ", drop_batch); + } + + return 0; +} + +static int fq_codel_print_xstats(struct qdisc_util *qu, FILE *f, + struct rtattr *xstats) +{ + struct tc_fq_codel_xstats _st = {}, *st; + + SPRINT_BUF(b1); + + if (xstats == NULL) + return 0; + + st = RTA_DATA(xstats); + if (RTA_PAYLOAD(xstats) < sizeof(*st)) { + memcpy(&_st, st, RTA_PAYLOAD(xstats)); + st = &_st; + } + if (st->type == TCA_FQ_CODEL_XSTATS_QDISC) { + print_uint(PRINT_ANY, "maxpacket", " maxpacket %u", + st->qdisc_stats.maxpacket); + print_uint(PRINT_ANY, "drop_overlimit", " drop_overlimit %u", + st->qdisc_stats.drop_overlimit); + print_uint(PRINT_ANY, "new_flow_count", " new_flow_count %u", + st->qdisc_stats.new_flow_count); + print_uint(PRINT_ANY, "ecn_mark", " ecn_mark %u", + st->qdisc_stats.ecn_mark); + if (st->qdisc_stats.ce_mark) + print_uint(PRINT_ANY, "ce_mark", " ce_mark %u", + st->qdisc_stats.ce_mark); + if (st->qdisc_stats.memory_usage) + print_uint(PRINT_ANY, "memory_used", " memory_used %u", + st->qdisc_stats.memory_usage); + if (st->qdisc_stats.drop_overmemory) + print_uint(PRINT_ANY, "drop_overmemory", " drop_overmemory %u", + st->qdisc_stats.drop_overmemory); + print_nl(); + print_uint(PRINT_ANY, "new_flows_len", " new_flows_len %u", + st->qdisc_stats.new_flows_len); + print_uint(PRINT_ANY, "old_flows_len", " old_flows_len %u", + st->qdisc_stats.old_flows_len); + } + if (st->type == TCA_FQ_CODEL_XSTATS_CLASS) { + print_int(PRINT_ANY, "deficit", " deficit %d", + st->class_stats.deficit); + print_uint(PRINT_ANY, "count", " count %u", + st->class_stats.count); + print_uint(PRINT_ANY, "lastcount", " lastcount %u", + st->class_stats.lastcount); + print_uint(PRINT_JSON, "ldelay", NULL, + st->class_stats.ldelay); + print_string(PRINT_FP, NULL, " ldelay %s", + sprint_time(st->class_stats.ldelay, b1)); + if (st->class_stats.dropping) { + print_bool(PRINT_ANY, "dropping", " dropping", true); + print_int(PRINT_JSON, "drop_next", NULL, + st->class_stats.drop_next); + if (st->class_stats.drop_next < 0) + print_string(PRINT_FP, NULL, " drop_next -%s", + sprint_time(-st->class_stats.drop_next, b1)); + else { + print_string(PRINT_FP, NULL, " drop_next %s", + sprint_time(st->class_stats.drop_next, b1)); + } + } + } + return 0; + +} + +struct qdisc_util fq_codel_qdisc_util = { + .id = "fq_codel", + .parse_qopt = fq_codel_parse_opt, + .print_qopt = fq_codel_print_opt, + .print_xstats = fq_codel_print_xstats, +}; 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