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Diffstat (limited to '')
| -rw-r--r-- | tc/q_hhf.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/tc/q_hhf.c b/tc/q_hhf.c new file mode 100644 index 0000000..95e49f3 --- /dev/null +++ b/tc/q_hhf.c @@ -0,0 +1,210 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* q_hhf.c Heavy-Hitter Filter (HHF) + * + * Copyright (C) 2013 Terry Lam <vtlam@google.com> + */ +#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: ... hhf [ limit PACKETS ] [ quantum BYTES]\n" + " [ hh_limit NUMBER ]\n" + " [ reset_timeout TIME ]\n" + " [ admit_bytes BYTES ]\n" + " [ evict_timeout TIME ]\n" + " [ non_hh_weight NUMBER ]\n"); +} + +static int hhf_parse_opt(struct qdisc_util *qu, int argc, char **argv, + struct nlmsghdr *n, const char *dev) +{ + unsigned int limit = 0; + unsigned int quantum = 0; + unsigned int hh_limit = 0; + unsigned int reset_timeout = 0; + unsigned int admit_bytes = 0; + unsigned int evict_timeout = 0; + unsigned int non_hh_weight = 0; + 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, "quantum") == 0) { + NEXT_ARG(); + if (get_unsigned(&quantum, *argv, 0)) { + fprintf(stderr, "Illegal \"quantum\"\n"); + return -1; + } + } else if (strcmp(*argv, "hh_limit") == 0) { + NEXT_ARG(); + if (get_unsigned(&hh_limit, *argv, 0)) { + fprintf(stderr, "Illegal \"hh_limit\"\n"); + return -1; + } + } else if (strcmp(*argv, "reset_timeout") == 0) { + NEXT_ARG(); + if (get_time(&reset_timeout, *argv)) { + fprintf(stderr, "Illegal \"reset_timeout\"\n"); + return -1; + } + } else if (strcmp(*argv, "admit_bytes") == 0) { + NEXT_ARG(); + if (get_unsigned(&admit_bytes, *argv, 0)) { + fprintf(stderr, "Illegal \"admit_bytes\"\n"); + return -1; + } + } else if (strcmp(*argv, "evict_timeout") == 0) { + NEXT_ARG(); + if (get_time(&evict_timeout, *argv)) { + fprintf(stderr, "Illegal \"evict_timeout\"\n"); + return -1; + } + } else if (strcmp(*argv, "non_hh_weight") == 0) { + NEXT_ARG(); + if (get_unsigned(&non_hh_weight, *argv, 0)) { + fprintf(stderr, "Illegal \"non_hh_weight\"\n"); + return -1; + } + } 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_HHF_BACKLOG_LIMIT, &limit, + sizeof(limit)); + if (quantum) + addattr_l(n, 1024, TCA_HHF_QUANTUM, &quantum, sizeof(quantum)); + if (hh_limit) + addattr_l(n, 1024, TCA_HHF_HH_FLOWS_LIMIT, &hh_limit, + sizeof(hh_limit)); + if (reset_timeout) + addattr_l(n, 1024, TCA_HHF_RESET_TIMEOUT, &reset_timeout, + sizeof(reset_timeout)); + if (admit_bytes) + addattr_l(n, 1024, TCA_HHF_ADMIT_BYTES, &admit_bytes, + sizeof(admit_bytes)); + if (evict_timeout) + addattr_l(n, 1024, TCA_HHF_EVICT_TIMEOUT, &evict_timeout, + sizeof(evict_timeout)); + if (non_hh_weight) + addattr_l(n, 1024, TCA_HHF_NON_HH_WEIGHT, &non_hh_weight, + sizeof(non_hh_weight)); + addattr_nest_end(n, tail); + return 0; +} + +static int hhf_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) +{ + struct rtattr *tb[TCA_HHF_MAX + 1]; + unsigned int limit; + unsigned int quantum; + unsigned int hh_limit; + unsigned int reset_timeout; + unsigned int admit_bytes; + unsigned int evict_timeout; + unsigned int non_hh_weight; + + SPRINT_BUF(b1); + + if (opt == NULL) + return 0; + + parse_rtattr_nested(tb, TCA_HHF_MAX, opt); + + if (tb[TCA_HHF_BACKLOG_LIMIT] && + RTA_PAYLOAD(tb[TCA_HHF_BACKLOG_LIMIT]) >= sizeof(__u32)) { + limit = rta_getattr_u32(tb[TCA_HHF_BACKLOG_LIMIT]); + print_uint(PRINT_ANY, "limit", "limit %up ", limit); + } + if (tb[TCA_HHF_QUANTUM] && + RTA_PAYLOAD(tb[TCA_HHF_QUANTUM]) >= sizeof(__u32)) { + quantum = rta_getattr_u32(tb[TCA_HHF_QUANTUM]); + print_size(PRINT_ANY, "quantum", "quantum %s ", quantum); + } + if (tb[TCA_HHF_HH_FLOWS_LIMIT] && + RTA_PAYLOAD(tb[TCA_HHF_HH_FLOWS_LIMIT]) >= sizeof(__u32)) { + hh_limit = rta_getattr_u32(tb[TCA_HHF_HH_FLOWS_LIMIT]); + print_uint(PRINT_ANY, "hh_limit", "hh_limit %u ", hh_limit); + } + if (tb[TCA_HHF_RESET_TIMEOUT] && + RTA_PAYLOAD(tb[TCA_HHF_RESET_TIMEOUT]) >= sizeof(__u32)) { + reset_timeout = rta_getattr_u32(tb[TCA_HHF_RESET_TIMEOUT]); + print_uint(PRINT_JSON, "reset_timeout", NULL, reset_timeout); + print_string(PRINT_FP, NULL, "reset_timeout %s ", + sprint_time(reset_timeout, b1)); + } + if (tb[TCA_HHF_ADMIT_BYTES] && + RTA_PAYLOAD(tb[TCA_HHF_ADMIT_BYTES]) >= sizeof(__u32)) { + admit_bytes = rta_getattr_u32(tb[TCA_HHF_ADMIT_BYTES]); + print_size(PRINT_ANY, "admit_bytes", "admit_bytes %s ", + admit_bytes); + } + if (tb[TCA_HHF_EVICT_TIMEOUT] && + RTA_PAYLOAD(tb[TCA_HHF_EVICT_TIMEOUT]) >= sizeof(__u32)) { + evict_timeout = rta_getattr_u32(tb[TCA_HHF_EVICT_TIMEOUT]); + print_uint(PRINT_JSON, "evict_timeout", NULL, evict_timeout); + print_string(PRINT_FP, NULL, "evict_timeout %s ", + sprint_time(evict_timeout, b1)); + } + if (tb[TCA_HHF_NON_HH_WEIGHT] && + RTA_PAYLOAD(tb[TCA_HHF_NON_HH_WEIGHT]) >= sizeof(__u32)) { + non_hh_weight = rta_getattr_u32(tb[TCA_HHF_NON_HH_WEIGHT]); + print_uint(PRINT_ANY, "non_hh_weight", "non_hh_weight %u ", + non_hh_weight); + } + return 0; +} + +static int hhf_print_xstats(struct qdisc_util *qu, FILE *f, + struct rtattr *xstats) +{ + struct tc_hhf_xstats *st; + + if (xstats == NULL) + return 0; + + if (RTA_PAYLOAD(xstats) < sizeof(*st)) + return -1; + + st = RTA_DATA(xstats); + + print_uint(PRINT_ANY, "drop_overlimit", " drop_overlimit %u", + st->drop_overlimit); + print_uint(PRINT_ANY, "hh_overlimit", " hh_overlimit %u", + st->hh_overlimit); + print_uint(PRINT_ANY, "tot_hh", " tot_hh %u", st->hh_tot_count); + print_uint(PRINT_ANY, "cur_hh", " cur_hh %u", st->hh_cur_count); + + return 0; +} + +struct qdisc_util hhf_qdisc_util = { + .id = "hhf", + .parse_qopt = hhf_parse_opt, + .print_qopt = hhf_print_opt, + .print_xstats = hhf_print_xstats, +}; |