Terry Lam | ac74bd2 | 2014-05-09 12:10:47 -0700 | [diff] [blame] | 1 | /* q_hhf.c Heavy-Hitter Filter (HHF) |
| 2 | * |
| 3 | * Copyright (C) 2013 Terry Lam <vtlam@google.com> |
| 4 | */ |
| 5 | #include <stdio.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <unistd.h> |
| 8 | #include <syslog.h> |
| 9 | #include <fcntl.h> |
| 10 | #include <sys/socket.h> |
| 11 | #include <netinet/in.h> |
| 12 | #include <arpa/inet.h> |
| 13 | #include <string.h> |
| 14 | |
| 15 | #include "utils.h" |
| 16 | #include "tc_util.h" |
| 17 | |
| 18 | static void explain(void) |
| 19 | { |
| 20 | fprintf(stderr, "Usage: ... hhf [ limit PACKETS ] [ quantum BYTES]\n"); |
| 21 | fprintf(stderr, " [ hh_limit NUMBER ]\n"); |
| 22 | fprintf(stderr, " [ reset_timeout TIME ]\n"); |
| 23 | fprintf(stderr, " [ admit_bytes BYTES ]\n"); |
| 24 | fprintf(stderr, " [ evict_timeout TIME ]\n"); |
| 25 | fprintf(stderr, " [ non_hh_weight NUMBER ]\n"); |
| 26 | } |
| 27 | |
| 28 | static int hhf_parse_opt(struct qdisc_util *qu, int argc, char **argv, |
| 29 | struct nlmsghdr *n) |
| 30 | { |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 31 | unsigned int limit = 0; |
| 32 | unsigned int quantum = 0; |
| 33 | unsigned int hh_limit = 0; |
| 34 | unsigned int reset_timeout = 0; |
| 35 | unsigned int admit_bytes = 0; |
| 36 | unsigned int evict_timeout = 0; |
| 37 | unsigned int non_hh_weight = 0; |
Terry Lam | ac74bd2 | 2014-05-09 12:10:47 -0700 | [diff] [blame] | 38 | struct rtattr *tail; |
| 39 | |
| 40 | while (argc > 0) { |
| 41 | if (strcmp(*argv, "limit") == 0) { |
| 42 | NEXT_ARG(); |
| 43 | if (get_unsigned(&limit, *argv, 0)) { |
| 44 | fprintf(stderr, "Illegal \"limit\"\n"); |
| 45 | return -1; |
| 46 | } |
| 47 | } else if (strcmp(*argv, "quantum") == 0) { |
| 48 | NEXT_ARG(); |
| 49 | if (get_unsigned(&quantum, *argv, 0)) { |
| 50 | fprintf(stderr, "Illegal \"quantum\"\n"); |
| 51 | return -1; |
| 52 | } |
| 53 | } else if (strcmp(*argv, "hh_limit") == 0) { |
| 54 | NEXT_ARG(); |
| 55 | if (get_unsigned(&hh_limit, *argv, 0)) { |
| 56 | fprintf(stderr, "Illegal \"hh_limit\"\n"); |
| 57 | return -1; |
| 58 | } |
| 59 | } else if (strcmp(*argv, "reset_timeout") == 0) { |
| 60 | NEXT_ARG(); |
| 61 | if (get_time(&reset_timeout, *argv)) { |
| 62 | fprintf(stderr, "Illegal \"reset_timeout\"\n"); |
| 63 | return -1; |
| 64 | } |
| 65 | } else if (strcmp(*argv, "admit_bytes") == 0) { |
| 66 | NEXT_ARG(); |
| 67 | if (get_unsigned(&admit_bytes, *argv, 0)) { |
| 68 | fprintf(stderr, "Illegal \"admit_bytes\"\n"); |
| 69 | return -1; |
| 70 | } |
| 71 | } else if (strcmp(*argv, "evict_timeout") == 0) { |
| 72 | NEXT_ARG(); |
| 73 | if (get_time(&evict_timeout, *argv)) { |
| 74 | fprintf(stderr, "Illegal \"evict_timeout\"\n"); |
| 75 | return -1; |
| 76 | } |
| 77 | } else if (strcmp(*argv, "non_hh_weight") == 0) { |
| 78 | NEXT_ARG(); |
| 79 | if (get_unsigned(&non_hh_weight, *argv, 0)) { |
| 80 | fprintf(stderr, "Illegal \"non_hh_weight\"\n"); |
| 81 | return -1; |
| 82 | } |
| 83 | } else if (strcmp(*argv, "help") == 0) { |
| 84 | explain(); |
| 85 | return -1; |
| 86 | } else { |
| 87 | fprintf(stderr, "What is \"%s\"?\n", *argv); |
| 88 | explain(); |
| 89 | return -1; |
| 90 | } |
| 91 | argc--; argv++; |
| 92 | } |
| 93 | |
| 94 | tail = NLMSG_TAIL(n); |
| 95 | addattr_l(n, 1024, TCA_OPTIONS, NULL, 0); |
| 96 | if (limit) |
| 97 | addattr_l(n, 1024, TCA_HHF_BACKLOG_LIMIT, &limit, |
| 98 | sizeof(limit)); |
| 99 | if (quantum) |
| 100 | addattr_l(n, 1024, TCA_HHF_QUANTUM, &quantum, sizeof(quantum)); |
| 101 | if (hh_limit) |
| 102 | addattr_l(n, 1024, TCA_HHF_HH_FLOWS_LIMIT, &hh_limit, |
| 103 | sizeof(hh_limit)); |
| 104 | if (reset_timeout) |
| 105 | addattr_l(n, 1024, TCA_HHF_RESET_TIMEOUT, &reset_timeout, |
| 106 | sizeof(reset_timeout)); |
| 107 | if (admit_bytes) |
| 108 | addattr_l(n, 1024, TCA_HHF_ADMIT_BYTES, &admit_bytes, |
| 109 | sizeof(admit_bytes)); |
| 110 | if (evict_timeout) |
| 111 | addattr_l(n, 1024, TCA_HHF_EVICT_TIMEOUT, &evict_timeout, |
| 112 | sizeof(evict_timeout)); |
| 113 | if (non_hh_weight) |
| 114 | addattr_l(n, 1024, TCA_HHF_NON_HH_WEIGHT, &non_hh_weight, |
| 115 | sizeof(non_hh_weight)); |
| 116 | tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | static int hhf_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) |
| 121 | { |
| 122 | struct rtattr *tb[TCA_HHF_MAX + 1]; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 123 | unsigned int limit; |
| 124 | unsigned int quantum; |
| 125 | unsigned int hh_limit; |
| 126 | unsigned int reset_timeout; |
| 127 | unsigned int admit_bytes; |
| 128 | unsigned int evict_timeout; |
| 129 | unsigned int non_hh_weight; |
| 130 | |
Terry Lam | ac74bd2 | 2014-05-09 12:10:47 -0700 | [diff] [blame] | 131 | SPRINT_BUF(b1); |
| 132 | |
| 133 | if (opt == NULL) |
| 134 | return 0; |
| 135 | |
| 136 | parse_rtattr_nested(tb, TCA_HHF_MAX, opt); |
| 137 | |
| 138 | if (tb[TCA_HHF_BACKLOG_LIMIT] && |
| 139 | RTA_PAYLOAD(tb[TCA_HHF_BACKLOG_LIMIT]) >= sizeof(__u32)) { |
| 140 | limit = rta_getattr_u32(tb[TCA_HHF_BACKLOG_LIMIT]); |
| 141 | fprintf(f, "limit %up ", limit); |
| 142 | } |
| 143 | if (tb[TCA_HHF_QUANTUM] && |
| 144 | RTA_PAYLOAD(tb[TCA_HHF_QUANTUM]) >= sizeof(__u32)) { |
| 145 | quantum = rta_getattr_u32(tb[TCA_HHF_QUANTUM]); |
| 146 | fprintf(f, "quantum %u ", quantum); |
| 147 | } |
| 148 | if (tb[TCA_HHF_HH_FLOWS_LIMIT] && |
| 149 | RTA_PAYLOAD(tb[TCA_HHF_HH_FLOWS_LIMIT]) >= sizeof(__u32)) { |
| 150 | hh_limit = rta_getattr_u32(tb[TCA_HHF_HH_FLOWS_LIMIT]); |
| 151 | fprintf(f, "hh_limit %u ", hh_limit); |
| 152 | } |
| 153 | if (tb[TCA_HHF_RESET_TIMEOUT] && |
| 154 | RTA_PAYLOAD(tb[TCA_HHF_RESET_TIMEOUT]) >= sizeof(__u32)) { |
| 155 | reset_timeout = rta_getattr_u32(tb[TCA_HHF_RESET_TIMEOUT]); |
| 156 | fprintf(f, "reset_timeout %s ", sprint_time(reset_timeout, b1)); |
| 157 | } |
| 158 | if (tb[TCA_HHF_ADMIT_BYTES] && |
| 159 | RTA_PAYLOAD(tb[TCA_HHF_ADMIT_BYTES]) >= sizeof(__u32)) { |
| 160 | admit_bytes = rta_getattr_u32(tb[TCA_HHF_ADMIT_BYTES]); |
| 161 | fprintf(f, "admit_bytes %u ", admit_bytes); |
| 162 | } |
| 163 | if (tb[TCA_HHF_EVICT_TIMEOUT] && |
| 164 | RTA_PAYLOAD(tb[TCA_HHF_EVICT_TIMEOUT]) >= sizeof(__u32)) { |
| 165 | evict_timeout = rta_getattr_u32(tb[TCA_HHF_EVICT_TIMEOUT]); |
| 166 | fprintf(f, "evict_timeout %s ", sprint_time(evict_timeout, b1)); |
| 167 | } |
| 168 | if (tb[TCA_HHF_NON_HH_WEIGHT] && |
| 169 | RTA_PAYLOAD(tb[TCA_HHF_NON_HH_WEIGHT]) >= sizeof(__u32)) { |
| 170 | non_hh_weight = rta_getattr_u32(tb[TCA_HHF_NON_HH_WEIGHT]); |
| 171 | fprintf(f, "non_hh_weight %u ", non_hh_weight); |
| 172 | } |
| 173 | return 0; |
| 174 | } |
| 175 | |
| 176 | static int hhf_print_xstats(struct qdisc_util *qu, FILE *f, |
| 177 | struct rtattr *xstats) |
| 178 | { |
| 179 | struct tc_hhf_xstats *st; |
| 180 | |
| 181 | if (xstats == NULL) |
| 182 | return 0; |
| 183 | |
| 184 | if (RTA_PAYLOAD(xstats) < sizeof(*st)) |
| 185 | return -1; |
| 186 | |
| 187 | st = RTA_DATA(xstats); |
| 188 | |
| 189 | fprintf(f, " drop_overlimit %u hh_overlimit %u tot_hh %u cur_hh %u", |
| 190 | st->drop_overlimit, st->hh_overlimit, |
| 191 | st->hh_tot_count, st->hh_cur_count); |
| 192 | return 0; |
| 193 | } |
| 194 | |
| 195 | struct qdisc_util hhf_qdisc_util = { |
| 196 | .id = "hhf", |
| 197 | .parse_qopt = hhf_parse_opt, |
| 198 | .print_qopt = hhf_print_opt, |
| 199 | .print_xstats = hhf_print_xstats, |
| 200 | }; |