osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 1 | /* |
| 2 | * q_tbf.c TBF. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <stdio.h> |
| 14 | #include <stdlib.h> |
| 15 | #include <unistd.h> |
| 16 | #include <syslog.h> |
| 17 | #include <fcntl.h> |
| 18 | #include <sys/socket.h> |
| 19 | #include <netinet/in.h> |
| 20 | #include <arpa/inet.h> |
| 21 | #include <string.h> |
| 22 | |
| 23 | #include "utils.h" |
| 24 | #include "tc_util.h" |
| 25 | |
| 26 | static void explain(void) |
| 27 | { |
| 28 | fprintf(stderr, "Usage: ... tbf limit BYTES burst BYTES[/BYTES] rate KBPS [ mtu BYTES[/BYTES] ]\n"); |
Jesper Dangaard Brouer | 2c42579 | 2008-03-23 23:47:49 +0100 | [diff] [blame^] | 29 | fprintf(stderr, " [ peakrate KBPS ] [ latency TIME ] "); |
| 30 | fprintf(stderr, "[ overhead BYTES ]\n"); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 31 | } |
| 32 | |
| 33 | static void explain1(char *arg) |
| 34 | { |
| 35 | fprintf(stderr, "Illegal \"%s\"\n", arg); |
| 36 | } |
| 37 | |
| 38 | |
| 39 | #define usage() return(-1) |
| 40 | |
| 41 | static int tbf_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n) |
| 42 | { |
| 43 | int ok=0; |
| 44 | struct tc_tbf_qopt opt; |
| 45 | __u32 rtab[256]; |
| 46 | __u32 ptab[256]; |
| 47 | unsigned buffer=0, mtu=0, mpu=0, latency=0; |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 48 | int Rcell_log=-1, Pcell_log = -1; |
Jesper Dangaard Brouer | 2c42579 | 2008-03-23 23:47:49 +0100 | [diff] [blame^] | 49 | unsigned short overhead=0; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 50 | struct rtattr *tail; |
| 51 | |
| 52 | memset(&opt, 0, sizeof(opt)); |
| 53 | |
| 54 | while (argc > 0) { |
| 55 | if (matches(*argv, "limit") == 0) { |
| 56 | NEXT_ARG(); |
| 57 | if (opt.limit || latency) { |
| 58 | fprintf(stderr, "Double \"limit/latency\" spec\n"); |
| 59 | return -1; |
| 60 | } |
| 61 | if (get_size(&opt.limit, *argv)) { |
| 62 | explain1("limit"); |
| 63 | return -1; |
| 64 | } |
| 65 | ok++; |
| 66 | } else if (matches(*argv, "latency") == 0) { |
| 67 | NEXT_ARG(); |
| 68 | if (opt.limit || latency) { |
| 69 | fprintf(stderr, "Double \"limit/latency\" spec\n"); |
| 70 | return -1; |
| 71 | } |
Patrick McHardy | 8f34caa | 2007-03-04 20:15:00 +0100 | [diff] [blame] | 72 | if (get_time(&latency, *argv)) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 73 | explain1("latency"); |
| 74 | return -1; |
| 75 | } |
| 76 | ok++; |
| 77 | } else if (matches(*argv, "burst") == 0 || |
| 78 | strcmp(*argv, "buffer") == 0 || |
| 79 | strcmp(*argv, "maxburst") == 0) { |
| 80 | NEXT_ARG(); |
| 81 | if (buffer) { |
| 82 | fprintf(stderr, "Double \"buffer/burst\" spec\n"); |
| 83 | return -1; |
| 84 | } |
| 85 | if (get_size_and_cell(&buffer, &Rcell_log, *argv) < 0) { |
| 86 | explain1("buffer"); |
| 87 | return -1; |
| 88 | } |
| 89 | ok++; |
| 90 | } else if (strcmp(*argv, "mtu") == 0 || |
| 91 | strcmp(*argv, "minburst") == 0) { |
| 92 | NEXT_ARG(); |
| 93 | if (mtu) { |
| 94 | fprintf(stderr, "Double \"mtu/minburst\" spec\n"); |
| 95 | return -1; |
| 96 | } |
| 97 | if (get_size_and_cell(&mtu, &Pcell_log, *argv) < 0) { |
| 98 | explain1("mtu"); |
| 99 | return -1; |
| 100 | } |
| 101 | ok++; |
| 102 | } else if (strcmp(*argv, "mpu") == 0) { |
| 103 | NEXT_ARG(); |
| 104 | if (mpu) { |
| 105 | fprintf(stderr, "Double \"mpu\" spec\n"); |
| 106 | return -1; |
| 107 | } |
| 108 | if (get_size(&mpu, *argv)) { |
| 109 | explain1("mpu"); |
| 110 | return -1; |
| 111 | } |
| 112 | ok++; |
| 113 | } else if (strcmp(*argv, "rate") == 0) { |
| 114 | NEXT_ARG(); |
| 115 | if (opt.rate.rate) { |
| 116 | fprintf(stderr, "Double \"rate\" spec\n"); |
| 117 | return -1; |
| 118 | } |
| 119 | if (get_rate(&opt.rate.rate, *argv)) { |
| 120 | explain1("rate"); |
| 121 | return -1; |
| 122 | } |
| 123 | ok++; |
| 124 | } else if (matches(*argv, "peakrate") == 0) { |
| 125 | NEXT_ARG(); |
| 126 | if (opt.peakrate.rate) { |
| 127 | fprintf(stderr, "Double \"peakrate\" spec\n"); |
| 128 | return -1; |
| 129 | } |
| 130 | if (get_rate(&opt.peakrate.rate, *argv)) { |
| 131 | explain1("peakrate"); |
| 132 | return -1; |
| 133 | } |
| 134 | ok++; |
Jesper Dangaard Brouer | 2c42579 | 2008-03-23 23:47:49 +0100 | [diff] [blame^] | 135 | } else if (matches(*argv, "overhead") == 0) { |
| 136 | NEXT_ARG(); |
| 137 | if (overhead) { |
| 138 | fprintf(stderr, "Double \"overhead\" spec\n"); |
| 139 | return -1; |
| 140 | } |
| 141 | if (get_u16(&overhead, *argv, 10)) { |
| 142 | explain1("overhead"); return -1; |
| 143 | } |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 144 | } else if (strcmp(*argv, "help") == 0) { |
| 145 | explain(); |
| 146 | return -1; |
| 147 | } else { |
| 148 | fprintf(stderr, "What is \"%s\"?\n", *argv); |
| 149 | explain(); |
| 150 | return -1; |
| 151 | } |
| 152 | argc--; argv++; |
| 153 | } |
| 154 | |
| 155 | if (!ok) |
| 156 | return 0; |
| 157 | |
| 158 | if (opt.rate.rate == 0 || !buffer) { |
| 159 | fprintf(stderr, "Both \"rate\" and \"burst\" are required.\n"); |
| 160 | return -1; |
| 161 | } |
| 162 | if (opt.peakrate.rate) { |
| 163 | if (!mtu) { |
| 164 | fprintf(stderr, "\"mtu\" is required, if \"peakrate\" is requested.\n"); |
| 165 | return -1; |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | if (opt.limit == 0 && latency == 0) { |
| 170 | fprintf(stderr, "Either \"limit\" or \"latency\" are required.\n"); |
| 171 | return -1; |
| 172 | } |
| 173 | |
| 174 | if (opt.limit == 0) { |
Patrick McHardy | f0bda7e | 2007-03-04 20:14:59 +0100 | [diff] [blame] | 175 | double lim = opt.rate.rate*(double)latency/TIME_UNITS_PER_SEC + buffer; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 176 | if (opt.peakrate.rate) { |
Patrick McHardy | f0bda7e | 2007-03-04 20:14:59 +0100 | [diff] [blame] | 177 | double lim2 = opt.peakrate.rate*(double)latency/TIME_UNITS_PER_SEC + mtu; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 178 | if (lim2 < lim) |
| 179 | lim = lim2; |
| 180 | } |
| 181 | opt.limit = lim; |
| 182 | } |
| 183 | |
Jesper Dangaard Brouer | 2c42579 | 2008-03-23 23:47:49 +0100 | [diff] [blame^] | 184 | opt.rate.mpu = mpu; |
| 185 | opt.rate.overhead = overhead; |
Jesper Dangaard Brouer | d5f46f9 | 2007-09-05 10:47:47 +0200 | [diff] [blame] | 186 | if (tc_calc_rtable(&opt.rate, rtab, Rcell_log, mtu) < 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 187 | fprintf(stderr, "TBF: failed to calculate rate table.\n"); |
| 188 | return -1; |
| 189 | } |
| 190 | opt.buffer = tc_calc_xmittime(opt.rate.rate, buffer); |
Jesper Dangaard Brouer | d5f46f9 | 2007-09-05 10:47:47 +0200 | [diff] [blame] | 191 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 192 | if (opt.peakrate.rate) { |
Jesper Dangaard Brouer | 2c42579 | 2008-03-23 23:47:49 +0100 | [diff] [blame^] | 193 | opt.peakrate.mpu = mpu; |
| 194 | opt.peakrate.overhead = overhead; |
Jesper Dangaard Brouer | d5f46f9 | 2007-09-05 10:47:47 +0200 | [diff] [blame] | 195 | if (tc_calc_rtable(&opt.peakrate, ptab, Pcell_log, mtu) < 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 196 | fprintf(stderr, "TBF: failed to calculate peak rate table.\n"); |
| 197 | return -1; |
| 198 | } |
| 199 | opt.mtu = tc_calc_xmittime(opt.peakrate.rate, mtu); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 200 | } |
| 201 | |
4!tgraf | 228569c | 2005-01-18 01:24:18 +0000 | [diff] [blame] | 202 | tail = NLMSG_TAIL(n); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 203 | addattr_l(n, 1024, TCA_OPTIONS, NULL, 0); |
| 204 | addattr_l(n, 2024, TCA_TBF_PARMS, &opt, sizeof(opt)); |
| 205 | addattr_l(n, 3024, TCA_TBF_RTAB, rtab, 1024); |
| 206 | if (opt.peakrate.rate) |
| 207 | addattr_l(n, 4096, TCA_TBF_PTAB, ptab, 1024); |
4!tgraf | 228569c | 2005-01-18 01:24:18 +0000 | [diff] [blame] | 208 | tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 209 | return 0; |
| 210 | } |
| 211 | |
| 212 | static int tbf_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) |
| 213 | { |
| 214 | struct rtattr *tb[TCA_TBF_PTAB+1]; |
| 215 | struct tc_tbf_qopt *qopt; |
| 216 | double buffer, mtu; |
| 217 | double latency; |
| 218 | SPRINT_BUF(b1); |
| 219 | SPRINT_BUF(b2); |
| 220 | |
| 221 | if (opt == NULL) |
| 222 | return 0; |
| 223 | |
4!tgraf | 3b3ecd3 | 2005-01-18 22:11:58 +0000 | [diff] [blame] | 224 | parse_rtattr_nested(tb, TCA_TBF_PTAB, opt); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 225 | |
| 226 | if (tb[TCA_TBF_PARMS] == NULL) |
| 227 | return -1; |
| 228 | |
| 229 | qopt = RTA_DATA(tb[TCA_TBF_PARMS]); |
| 230 | if (RTA_PAYLOAD(tb[TCA_TBF_PARMS]) < sizeof(*qopt)) |
| 231 | return -1; |
| 232 | fprintf(f, "rate %s ", sprint_rate(qopt->rate.rate, b1)); |
Patrick McHardy | 76dc0aa | 2007-03-04 20:14:57 +0100 | [diff] [blame] | 233 | buffer = tc_calc_xmitsize(qopt->rate.rate, qopt->buffer); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 234 | if (show_details) { |
| 235 | fprintf(f, "burst %s/%u mpu %s ", sprint_size(buffer, b1), |
| 236 | 1<<qopt->rate.cell_log, sprint_size(qopt->rate.mpu, b2)); |
| 237 | } else { |
| 238 | fprintf(f, "burst %s ", sprint_size(buffer, b1)); |
| 239 | } |
| 240 | if (show_raw) |
| 241 | fprintf(f, "[%08x] ", qopt->buffer); |
| 242 | if (qopt->peakrate.rate) { |
| 243 | fprintf(f, "peakrate %s ", sprint_rate(qopt->peakrate.rate, b1)); |
| 244 | if (qopt->mtu || qopt->peakrate.mpu) { |
Patrick McHardy | 76dc0aa | 2007-03-04 20:14:57 +0100 | [diff] [blame] | 245 | mtu = tc_calc_xmitsize(qopt->peakrate.rate, qopt->mtu); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 246 | if (show_details) { |
| 247 | fprintf(f, "mtu %s/%u mpu %s ", sprint_size(mtu, b1), |
| 248 | 1<<qopt->peakrate.cell_log, sprint_size(qopt->peakrate.mpu, b2)); |
| 249 | } else { |
| 250 | fprintf(f, "minburst %s ", sprint_size(mtu, b1)); |
| 251 | } |
| 252 | if (show_raw) |
| 253 | fprintf(f, "[%08x] ", qopt->mtu); |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | if (show_raw) |
| 258 | fprintf(f, "limit %s ", sprint_size(qopt->limit, b1)); |
| 259 | |
Patrick McHardy | 8f34caa | 2007-03-04 20:15:00 +0100 | [diff] [blame] | 260 | latency = TIME_UNITS_PER_SEC*(qopt->limit/(double)qopt->rate.rate) - tc_core_tick2time(qopt->buffer); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 261 | if (qopt->peakrate.rate) { |
Patrick McHardy | 8f34caa | 2007-03-04 20:15:00 +0100 | [diff] [blame] | 262 | double lat2 = TIME_UNITS_PER_SEC*(qopt->limit/(double)qopt->peakrate.rate) - tc_core_tick2time(qopt->mtu); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 263 | if (lat2 > latency) |
| 264 | latency = lat2; |
| 265 | } |
Patrick McHardy | 8f34caa | 2007-03-04 20:15:00 +0100 | [diff] [blame] | 266 | fprintf(f, "lat %s ", sprint_time(latency, b1)); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 267 | |
Jesper Dangaard Brouer | 2c42579 | 2008-03-23 23:47:49 +0100 | [diff] [blame^] | 268 | if (qopt->rate.overhead) { |
| 269 | fprintf(f, "overhead %d", qopt->rate.overhead); |
| 270 | } |
| 271 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 272 | return 0; |
| 273 | } |
| 274 | |
net[shemminger]!kaber | 95812b5 | 2004-09-28 18:35:49 +0000 | [diff] [blame] | 275 | struct qdisc_util tbf_qdisc_util = { |
osdl.net!shemminger | f2f99e2 | 2004-08-31 17:45:21 +0000 | [diff] [blame] | 276 | .id = "tbf", |
| 277 | .parse_qopt = tbf_parse_opt, |
| 278 | .print_qopt = tbf_print_opt, |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 279 | }; |
| 280 | |