tc/q_cbq.c

   1 /*
   2  * q_cbq.c              CBQ.
   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 #include "tc_cbq.h"
  26
  27 static void explain_class(void)
  28 {
  29         fprintf(stderr, "Usage: ... cbq bandwidth BPS rate BPS maxburst PKTS [ avpkt BYTES ]\n");
  30         fprintf(stderr, "               [ minburst PKTS ] [ bounded ] [ isolated ]\n");
  31         fprintf(stderr, "               [ allot BYTES ] [ mpu BYTES ] [ weight RATE ]\n");
  32         fprintf(stderr, "               [ prio NUMBER ] [ cell BYTES ] [ ewma LOG ]\n");
  33         fprintf(stderr, "               [ estimator INTERVAL TIME_CONSTANT ]\n");
  34         fprintf(stderr, "               [ split CLASSID ] [ defmap MASK/CHANGE ]\n");
  35         fprintf(stderr, "               [ overhead BYTES ] [ linklayer TYPE ]\n");
  36 }
  37
  38 static void explain(void)
  39 {
  40         fprintf(stderr, "Usage: ... cbq bandwidth BPS avpkt BYTES [ mpu BYTES ]\n");
  41         fprintf(stderr, "               [ cell BYTES ] [ ewma LOG ]\n");
  42 }
  43
  44 static void explain1(char *arg)
  45 {
  46         fprintf(stderr, "Illegal \"%s\"\n", arg);
  47 }
  48
  49
  50 static int cbq_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
  51 {
  52         struct tc_ratespec r;
  53         struct tc_cbq_lssopt lss;
  54         __u32 rtab[256];
  55         unsigned mpu = 0, avpkt = 0, allot = 0;
  56         unsigned short overhead = 0;
  57         unsigned int linklayer = LINKLAYER_ETHERNET; /* Assume ethernet */
  58         int cell_log =  -1;
  59         int ewma_log =  -1;
  60         struct rtattr *tail;
  61
  62         memset(&lss, 0, sizeof(lss));
  63         memset(&r, 0, sizeof(r));
  64
  65         while (argc > 0) {
  66                 if (matches(*argv, "bandwidth") == 0 ||
  67                     matches(*argv, "rate") == 0) {
  68                         NEXT_ARG();
  69                         if (get_rate(&r.rate, *argv)) {
  70                                 explain1("bandwidth");
  71                                 return -1;
  72                         }
  73                 } else if (matches(*argv, "ewma") == 0) {
  74                         NEXT_ARG();
  75                         if (get_integer(&ewma_log, *argv, 0)) {
  76                                 explain1("ewma");
  77                                 return -1;
  78                         }
  79                         if (ewma_log > 31) {
  80                                 fprintf(stderr, "ewma_log must be < 32\n");
  81                                 return -1;
  82                         }
  83                 } else if (matches(*argv, "cell") == 0) {
  84                         unsigned int cell;
  85                         int i;
  86
  87                         NEXT_ARG();
  88                         if (get_size(&cell, *argv)) {
  89                                 explain1("cell");
  90                                 return -1;
  91                         }
  92                         for (i = 0; i < 32; i++)
  93                                 if ((1<<i) == cell)
  94                                         break;
  95                         if (i >= 32) {
  96                                 fprintf(stderr, "cell must be 2^n\n");
  97                                 return -1;
  98                         }
  99                         cell_log = i;
 100                 } else if (matches(*argv, "avpkt") == 0) {
 101                         NEXT_ARG();
 102                         if (get_size(&avpkt, *argv)) {
 103                                 explain1("avpkt");
 104                                 return -1;
 105                         }
 106                 } else if (matches(*argv, "mpu") == 0) {
 107                         NEXT_ARG();
 108                         if (get_size(&mpu, *argv)) {
 109                                 explain1("mpu");
 110                                 return -1;
 111                         }
 112                 } else if (matches(*argv, "allot") == 0) {
 113                         NEXT_ARG();
 114                         /* Accept and ignore "allot" for backward compatibility */
 115                         if (get_size(&allot, *argv)) {
 116                                 explain1("allot");
 117                                 return -1;
 118                         }
 119                 } else if (matches(*argv, "overhead") == 0) {
 120                         NEXT_ARG();
 121                         if (get_u16(&overhead, *argv, 10)) {
 122                                 explain1("overhead"); return -1;
 123                         }
 124                 } else if (matches(*argv, "linklayer") == 0) {
 125                         NEXT_ARG();
 126                         if (get_linklayer(&linklayer, *argv)) {
 127                                 explain1("linklayer"); return -1;
 128                         }
 129                 } else if (matches(*argv, "help") == 0) {
 130                         explain();
 131                         return -1;
 132                 } else {
 133                         fprintf(stderr, "What is \"%s\"?\n", *argv);
 134                         explain();
 135                         return -1;
 136                 }
 137                 argc--; argv++;
 138         }
 139
 140         /* OK. All options are parsed. */
 141
 142         if (r.rate == 0) {
 143                 fprintf(stderr, "CBQ: bandwidth is required parameter.\n");
 144                 return -1;
 145         }
 146         if (avpkt == 0) {
 147                 fprintf(stderr, "CBQ: \"avpkt\" is required.\n");
 148                 return -1;
 149         }
 150         if (allot < (avpkt*3)/2)
 151                 allot = (avpkt*3)/2;
 152
 153         r.mpu = mpu;
 154         r.overhead = overhead;
 155         if (tc_calc_rtable(&r, rtab, cell_log, allot, linklayer) < 0) {
 156                 fprintf(stderr, "CBQ: failed to calculate rate table.\n");
 157                 return -1;
 158         }
 159
 160         if (ewma_log < 0)
 161                 ewma_log = TC_CBQ_DEF_EWMA;
 162         lss.ewma_log = ewma_log;
 163         lss.maxidle = tc_calc_xmittime(r.rate, avpkt);
 164         lss.change = TCF_CBQ_LSS_MAXIDLE|TCF_CBQ_LSS_EWMA|TCF_CBQ_LSS_AVPKT;
 165         lss.avpkt = avpkt;
 166
 167         tail = NLMSG_TAIL(n);
 168         addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
 169         addattr_l(n, 1024, TCA_CBQ_RATE, &r, sizeof(r));
 170         addattr_l(n, 1024, TCA_CBQ_LSSOPT, &lss, sizeof(lss));
 171         addattr_l(n, 3024, TCA_CBQ_RTAB, rtab, 1024);
 172         if (show_raw) {
 173                 int i;
 174
 175                 for (i = 0; i < 256; i++)
 176                         printf("%u ", rtab[i]);
 177                 printf("\n");
 178         }
 179         tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
 180         return 0;
 181 }
 182
 183 static int cbq_parse_class_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
 184 {
 185         int wrr_ok = 0, fopt_ok = 0;
 186         struct tc_ratespec r;
 187         struct tc_cbq_lssopt lss;
 188         struct tc_cbq_wrropt wrr;
 189         struct tc_cbq_fopt fopt;
 190         struct tc_cbq_ovl ovl;
 191         __u32 rtab[256];
 192         unsigned mpu = 0;
 193         int cell_log =  -1;
 194         int ewma_log =  -1;
 195         unsigned int bndw = 0;
 196         unsigned minburst = 0, maxburst = 0;
 197         unsigned short overhead = 0;
 198         unsigned int linklayer = LINKLAYER_ETHERNET; /* Assume ethernet */
 199         struct rtattr *tail;
 200
 201         memset(&r, 0, sizeof(r));
 202         memset(&lss, 0, sizeof(lss));
 203         memset(&wrr, 0, sizeof(wrr));
 204         memset(&fopt, 0, sizeof(fopt));
 205         memset(&ovl, 0, sizeof(ovl));
 206
 207         while (argc > 0) {
 208                 if (matches(*argv, "rate") == 0) {
 209                         NEXT_ARG();
 210                         if (get_rate(&r.rate, *argv)) {
 211                                 explain1("rate");
 212                                 return -1;
 213                         }
 214                 } else if (matches(*argv, "bandwidth") == 0) {
 215                         NEXT_ARG();
 216                         if (get_rate(&bndw, *argv)) {
 217                                 explain1("bandwidth");
 218                                 return -1;
 219                         }
 220                 } else if (matches(*argv, "minidle") == 0) {
 221                         NEXT_ARG();
 222                         if (get_u32(&lss.minidle, *argv, 0)) {
 223                                 explain1("minidle");
 224                                 return -1;
 225                         }
 226                         lss.change |= TCF_CBQ_LSS_MINIDLE;
 227                 } else if (matches(*argv, "minburst") == 0) {
 228                         NEXT_ARG();
 229                         if (get_u32(&minburst, *argv, 0)) {
 230                                 explain1("minburst");
 231                                 return -1;
 232                         }
 233                         lss.change |= TCF_CBQ_LSS_OFFTIME;
 234                 } else if (matches(*argv, "maxburst") == 0) {
 235                         NEXT_ARG();
 236                         if (get_u32(&maxburst, *argv, 0)) {
 237                                 explain1("maxburst");
 238                                 return -1;
 239                         }
 240                         lss.change |= TCF_CBQ_LSS_MAXIDLE;
 241                 } else if (matches(*argv, "bounded") == 0) {
 242                         lss.flags |= TCF_CBQ_LSS_BOUNDED;
 243                         lss.change |= TCF_CBQ_LSS_FLAGS;
 244                 } else if (matches(*argv, "borrow") == 0) {
 245                         lss.flags &= ~TCF_CBQ_LSS_BOUNDED;
 246                         lss.change |= TCF_CBQ_LSS_FLAGS;
 247                 } else if (matches(*argv, "isolated") == 0) {
 248                         lss.flags |= TCF_CBQ_LSS_ISOLATED;
 249                         lss.change |= TCF_CBQ_LSS_FLAGS;
 250                 } else if (matches(*argv, "sharing") == 0) {
 251                         lss.flags &= ~TCF_CBQ_LSS_ISOLATED;
 252                         lss.change |= TCF_CBQ_LSS_FLAGS;
 253                 } else if (matches(*argv, "ewma") == 0) {
 254                         NEXT_ARG();
 255                         if (get_integer(&ewma_log, *argv, 0)) {
 256                                 explain1("ewma");
 257                                 return -1;
 258                         }
 259                         if (ewma_log > 31) {
 260                                 fprintf(stderr, "ewma_log must be < 32\n");
 261                                 return -1;
 262                         }
 263                         lss.change |= TCF_CBQ_LSS_EWMA;
 264                 } else if (matches(*argv, "cell") == 0) {
 265                         unsigned int cell;
 266                         int i;
 267
 268                         NEXT_ARG();
 269                         if (get_size(&cell, *argv)) {
 270                                 explain1("cell");
 271                                 return -1;
 272                         }
 273                         for (i = 0; i < 32; i++)
 274                                 if ((1<<i) == cell)
 275                                         break;
 276                         if (i >= 32) {
 277                                 fprintf(stderr, "cell must be 2^n\n");
 278                                 return -1;
 279                         }
 280                         cell_log = i;
 281                 } else if (matches(*argv, "prio") == 0) {
 282                         unsigned int prio;
 283
 284                         NEXT_ARG();
 285                         if (get_u32(&prio, *argv, 0)) {
 286                                 explain1("prio");
 287                                 return -1;
 288                         }
 289                         if (prio > TC_CBQ_MAXPRIO) {
 290                                 fprintf(stderr, "\"prio\" must be number in the range 1...%d\n", TC_CBQ_MAXPRIO);
 291                                 return -1;
 292                         }
 293                         wrr.priority = prio;
 294                         wrr_ok++;
 295                 } else if (matches(*argv, "allot") == 0) {
 296                         NEXT_ARG();
 297                         if (get_size(&wrr.allot, *argv)) {
 298                                 explain1("allot");
 299                                 return -1;
 300                         }
 301                 } else if (matches(*argv, "avpkt") == 0) {
 302                         NEXT_ARG();
 303                         if (get_size(&lss.avpkt, *argv)) {
 304                                 explain1("avpkt");
 305                                 return -1;
 306                         }
 307                         lss.change |= TCF_CBQ_LSS_AVPKT;
 308                 } else if (matches(*argv, "mpu") == 0) {
 309                         NEXT_ARG();
 310                         if (get_size(&mpu, *argv)) {
 311                                 explain1("mpu");
 312                                 return -1;
 313                         }
 314                 } else if (matches(*argv, "weight") == 0) {
 315                         NEXT_ARG();
 316                         if (get_size(&wrr.weight, *argv)) {
 317                                 explain1("weight");
 318                                 return -1;
 319                         }
 320                         wrr_ok++;
 321                 } else if (matches(*argv, "split") == 0) {
 322                         NEXT_ARG();
 323                         if (get_tc_classid(&fopt.split, *argv)) {
 324                                 fprintf(stderr, "Invalid split node ID.\n");
 325                                 return -1;
 326                         }
 327                         fopt_ok++;
 328                 } else if (matches(*argv, "defmap") == 0) {
 329                         int err;
 330
 331                         NEXT_ARG();
 332                         err = sscanf(*argv, "%08x/%08x", &fopt.defmap, &fopt.defchange);
 333                         if (err < 1) {
 334                                 fprintf(stderr, "Invalid defmap, should be MASK32[/MASK]\n");
 335                                 return -1;
 336                         }
 337                         if (err == 1)
 338                                 fopt.defchange = ~0;
 339                         fopt_ok++;
 340                 } else if (matches(*argv, "overhead") == 0) {
 341                         NEXT_ARG();
 342                         if (get_u16(&overhead, *argv, 10)) {
 343                                 explain1("overhead"); return -1;
 344                         }
 345                 } else if (matches(*argv, "linklayer") == 0) {
 346                         NEXT_ARG();
 347                         if (get_linklayer(&linklayer, *argv)) {
 348                                 explain1("linklayer"); return -1;
 349                         }
 350                 } else if (matches(*argv, "help") == 0) {
 351                         explain_class();
 352                         return -1;
 353                 } else {
 354                         fprintf(stderr, "What is \"%s\"?\n", *argv);
 355                         explain_class();
 356                         return -1;
 357                 }
 358                 argc--; argv++;
 359         }
 360
 361         /* OK. All options are parsed. */
 362
 363         /* 1. Prepare link sharing scheduler parameters */
 364         if (r.rate) {
 365                 unsigned int pktsize = wrr.allot;
 366
 367                 if (wrr.allot < (lss.avpkt*3)/2)
 368                         wrr.allot = (lss.avpkt*3)/2;
 369                 r.mpu = mpu;
 370                 r.overhead = overhead;
 371                 if (tc_calc_rtable(&r, rtab, cell_log, pktsize, linklayer) < 0) {
 372                         fprintf(stderr, "CBQ: failed to calculate rate table.\n");
 373                         return -1;
 374                 }
 375         }
 376         if (ewma_log < 0)
 377                 ewma_log = TC_CBQ_DEF_EWMA;
 378         lss.ewma_log = ewma_log;
 379         if (lss.change&(TCF_CBQ_LSS_OFFTIME|TCF_CBQ_LSS_MAXIDLE)) {
 380                 if (lss.avpkt == 0) {
 381                         fprintf(stderr, "CBQ: avpkt is required for max/minburst.\n");
 382                         return -1;
 383                 }
 384                 if (bndw == 0 || r.rate == 0) {
 385                         fprintf(stderr, "CBQ: bandwidth&rate are required for max/minburst.\n");
 386                         return -1;
 387                 }
 388         }
 389         if (wrr.priority == 0 && (n->nlmsg_flags&NLM_F_EXCL)) {
 390                 wrr_ok = 1;
 391                 wrr.priority = TC_CBQ_MAXPRIO;
 392                 if (wrr.allot == 0)
 393                         wrr.allot = (lss.avpkt*3)/2;
 394         }
 395         if (wrr_ok) {
 396                 if (wrr.weight == 0)
 397                         wrr.weight = (wrr.priority == TC_CBQ_MAXPRIO) ? 1 : r.rate;
 398                 if (wrr.allot == 0) {
 399                         fprintf(stderr, "CBQ: \"allot\" is required to set WRR parameters.\n");
 400                         return -1;
 401                 }
 402         }
 403         if (lss.change&TCF_CBQ_LSS_MAXIDLE) {
 404                 lss.maxidle = tc_cbq_calc_maxidle(bndw, r.rate, lss.avpkt, ewma_log, maxburst);
 405                 lss.change |= TCF_CBQ_LSS_MAXIDLE;
 406                 lss.change |= TCF_CBQ_LSS_EWMA|TCF_CBQ_LSS_AVPKT;
 407         }
 408         if (lss.change&TCF_CBQ_LSS_OFFTIME) {
 409                 lss.offtime = tc_cbq_calc_offtime(bndw, r.rate, lss.avpkt, ewma_log, minburst);
 410                 lss.change |= TCF_CBQ_LSS_OFFTIME;
 411                 lss.change |= TCF_CBQ_LSS_EWMA|TCF_CBQ_LSS_AVPKT;
 412         }
 413         if (lss.change&TCF_CBQ_LSS_MINIDLE) {
 414                 lss.minidle <<= lss.ewma_log;
 415                 lss.change |= TCF_CBQ_LSS_EWMA;
 416         }
 417
 418         tail = NLMSG_TAIL(n);
 419         addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
 420         if (lss.change) {
 421                 lss.change |= TCF_CBQ_LSS_FLAGS;
 422                 addattr_l(n, 1024, TCA_CBQ_LSSOPT, &lss, sizeof(lss));
 423         }
 424         if (wrr_ok)
 425                 addattr_l(n, 1024, TCA_CBQ_WRROPT, &wrr, sizeof(wrr));
 426         if (fopt_ok)
 427                 addattr_l(n, 1024, TCA_CBQ_FOPT, &fopt, sizeof(fopt));
 428         if (r.rate) {
 429                 addattr_l(n, 1024, TCA_CBQ_RATE, &r, sizeof(r));
 430                 addattr_l(n, 3024, TCA_CBQ_RTAB, rtab, 1024);
 431                 if (show_raw) {
 432                         int i;
 433
 434                         for (i = 0; i < 256; i++)
 435                                 printf("%u ", rtab[i]);
 436                         printf("\n");
 437                 }
 438         }
 439         tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
 440         return 0;
 441 }
 442
 443
 444 static int cbq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
 445 {
 446         struct rtattr *tb[TCA_CBQ_MAX+1];
 447         struct tc_ratespec *r = NULL;
 448         struct tc_cbq_lssopt *lss = NULL;
 449         struct tc_cbq_wrropt *wrr = NULL;
 450         struct tc_cbq_fopt *fopt = NULL;
 451         struct tc_cbq_ovl *ovl = NULL;
 452         unsigned int linklayer;
 453
 454         SPRINT_BUF(b1);
 455         SPRINT_BUF(b2);
 456
 457         if (opt == NULL)
 458                 return 0;
 459
 460         parse_rtattr_nested(tb, TCA_CBQ_MAX, opt);
 461
 462         if (tb[TCA_CBQ_RATE]) {
 463                 if (RTA_PAYLOAD(tb[TCA_CBQ_RATE]) < sizeof(*r))
 464                         fprintf(stderr, "CBQ: too short rate opt\n");
 465                 else
 466                         r = RTA_DATA(tb[TCA_CBQ_RATE]);
 467         }
 468         if (tb[TCA_CBQ_LSSOPT]) {
 469                 if (RTA_PAYLOAD(tb[TCA_CBQ_LSSOPT]) < sizeof(*lss))
 470                         fprintf(stderr, "CBQ: too short lss opt\n");
 471                 else
 472                         lss = RTA_DATA(tb[TCA_CBQ_LSSOPT]);
 473         }
 474         if (tb[TCA_CBQ_WRROPT]) {
 475                 if (RTA_PAYLOAD(tb[TCA_CBQ_WRROPT]) < sizeof(*wrr))
 476                         fprintf(stderr, "CBQ: too short wrr opt\n");
 477                 else
 478                         wrr = RTA_DATA(tb[TCA_CBQ_WRROPT]);
 479         }
 480         if (tb[TCA_CBQ_FOPT]) {
 481                 if (RTA_PAYLOAD(tb[TCA_CBQ_FOPT]) < sizeof(*fopt))
 482                         fprintf(stderr, "CBQ: too short fopt\n");
 483                 else
 484                         fopt = RTA_DATA(tb[TCA_CBQ_FOPT]);
 485         }
 486         if (tb[TCA_CBQ_OVL_STRATEGY]) {
 487                 if (RTA_PAYLOAD(tb[TCA_CBQ_OVL_STRATEGY]) < sizeof(*ovl))
 488                         fprintf(stderr, "CBQ: too short overlimit strategy %u/%u\n",
 489                                 (unsigned int) RTA_PAYLOAD(tb[TCA_CBQ_OVL_STRATEGY]),
 490                                 (unsigned int) sizeof(*ovl));
 491                 else
 492                         ovl = RTA_DATA(tb[TCA_CBQ_OVL_STRATEGY]);
 493         }
 494
 495         if (r) {
 496                 char buf[64];
 497
 498                 print_rate(buf, sizeof(buf), r->rate);
 499                 fprintf(f, "rate %s ", buf);
 500                 linklayer = (r->linklayer & TC_LINKLAYER_MASK);
 501                 if (linklayer > TC_LINKLAYER_ETHERNET || show_details)
 502                         fprintf(f, "linklayer %s ", sprint_linklayer(linklayer, b2));
 503                 if (show_details) {
 504                         fprintf(f, "cell %ub ", 1<<r->cell_log);
 505                         if (r->mpu)
 506                                 fprintf(f, "mpu %ub ", r->mpu);
 507                         if (r->overhead)
 508                                 fprintf(f, "overhead %ub ", r->overhead);
 509                 }
 510         }
 511         if (lss && lss->flags) {
 512                 int comma = 0;
 513
 514                 fprintf(f, "(");
 515                 if (lss->flags&TCF_CBQ_LSS_BOUNDED) {
 516                         fprintf(f, "bounded");
 517                         comma = 1;
 518                 }
 519                 if (lss->flags&TCF_CBQ_LSS_ISOLATED) {
 520                         if (comma)
 521                                 fprintf(f, ",");
 522                         fprintf(f, "isolated");
 523                 }
 524                 fprintf(f, ") ");
 525         }
 526         if (wrr) {
 527                 if (wrr->priority != TC_CBQ_MAXPRIO)
 528                         fprintf(f, "prio %u", wrr->priority);
 529                 else
 530                         fprintf(f, "prio no-transmit");
 531                 if (show_details) {
 532                         char buf[64];
 533
 534                         fprintf(f, "/%u ", wrr->cpriority);
 535                         if (wrr->weight != 1) {
 536                                 print_rate(buf, sizeof(buf), wrr->weight);
 537                                 fprintf(f, "weight %s ", buf);
 538                         }
 539                         if (wrr->allot)
 540                                 fprintf(f, "allot %ub ", wrr->allot);
 541                 }
 542         }
 543         if (lss && show_details) {
 544                 fprintf(f, "\nlevel %u ewma %u avpkt %ub ", lss->level, lss->ewma_log, lss->avpkt);
 545                 if (lss->maxidle) {
 546                         fprintf(f, "maxidle %s ", sprint_ticks(lss->maxidle>>lss->ewma_log, b1));
 547                         if (show_raw)
 548                                 fprintf(f, "[%08x] ", lss->maxidle);
 549                 }
 550                 if (lss->minidle != 0x7fffffff) {
 551                         fprintf(f, "minidle %s ", sprint_ticks(lss->minidle>>lss->ewma_log, b1));
 552                         if (show_raw)
 553                                 fprintf(f, "[%08x] ", lss->minidle);
 554                 }
 555                 if (lss->offtime) {
 556                         fprintf(f, "offtime %s ", sprint_ticks(lss->offtime, b1));
 557                         if (show_raw)
 558                                 fprintf(f, "[%08x] ", lss->offtime);
 559                 }
 560         }
 561         if (fopt && show_details) {
 562                 char buf[64];
 563
 564                 print_tc_classid(buf, sizeof(buf), fopt->split);
 565                 fprintf(f, "\nsplit %s ", buf);
 566                 if (fopt->defmap) {
 567                         fprintf(f, "defmap %08x", fopt->defmap);
 568                 }
 569         }
 570         return 0;
 571 }
 572
 573 static int cbq_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats)
 574 {
 575         struct tc_cbq_xstats *st;
 576
 577         if (xstats == NULL)
 578                 return 0;
 579
 580         if (RTA_PAYLOAD(xstats) < sizeof(*st))
 581                 return -1;
 582
 583         st = RTA_DATA(xstats);
 584         fprintf(f, "  borrowed %u overactions %u avgidle %g undertime %g", st->borrows,
 585                 st->overactions, (double)st->avgidle, (double)st->undertime);
 586         return 0;
 587 }
 588
 589 struct qdisc_util cbq_qdisc_util = {
 590         .id             = "cbq",
 591         .parse_qopt     = cbq_parse_opt,
 592         .print_qopt     = cbq_print_opt,
 593         .print_xstats   = cbq_print_xstats,
 594         .parse_copt     = cbq_parse_class_opt,
 595         .print_copt     = cbq_print_opt,
 596 };