package/network/utils/iproute2/patches/950-add-cake-to-tc.patch

   1 --- a/include/linux/pkt_sched.h
   2 +++ b/include/linux/pkt_sched.h
   3 @@ -850,4 +850,60 @@ struct tc_pie_xstats {
   4         __u32 maxq;             /* maximum queue size */
   5         __u32 ecn_mark;         /* packets marked with ecn*/
   6  };
   7 +
   8 +/* CAKE */
   9 +enum {
  10 +       TCA_CAKE_UNSPEC,
  11 +       TCA_CAKE_BASE_RATE,
  12 +       TCA_CAKE_DIFFSERV_MODE,
  13 +       TCA_CAKE_ATM,
  14 +       TCA_CAKE_FLOW_MODE,
  15 +       TCA_CAKE_OVERHEAD,
  16 +       TCA_CAKE_MPU,
  17 +       TCA_CAKE_RTT,
  18 +       TCA_CAKE_TARGET,
  19 +       TCA_CAKE_AUTORATE,
  20 +       TCA_CAKE_MEMORY,
  21 +       TCA_CAKE_NAT,
  22 +       TCA_CAKE_ETHERNET,
  23 +       TCA_CAKE_WASH,
  24 +       __TCA_CAKE_MAX
  25 +};
  26 +#define TCA_CAKE_MAX   (__TCA_CAKE_MAX - 1)
  27 +
  28 +struct tc_cake_traffic_stats {
  29 +       __u32 packets;
  30 +       __u32 link_ms;
  31 +       __u64 bytes;
  32 +};
  33 +
  34 +#define TC_CAKE_MAX_TINS (8)
  35 +struct tc_cake_xstats {
  36 +       __u16 version;  /* == 4, increments when struct extended */
  37 +       __u8  max_tins; /* == TC_CAKE_MAX_TINS */
  38 +       __u8  tin_cnt;  /* <= TC_CAKE_MAX_TINS */
  39 +
  40 +       __u32 threshold_rate   [TC_CAKE_MAX_TINS];
  41 +       __u32 target_us        [TC_CAKE_MAX_TINS];
  42 +       struct tc_cake_traffic_stats sent      [TC_CAKE_MAX_TINS];
  43 +       struct tc_cake_traffic_stats dropped   [TC_CAKE_MAX_TINS];
  44 +       struct tc_cake_traffic_stats ecn_marked[TC_CAKE_MAX_TINS];
  45 +       struct tc_cake_traffic_stats backlog   [TC_CAKE_MAX_TINS];
  46 +       __u32 interval_us      [TC_CAKE_MAX_TINS];
  47 +       __u32 way_indirect_hits[TC_CAKE_MAX_TINS];
  48 +       __u32 way_misses       [TC_CAKE_MAX_TINS];
  49 +       __u32 way_collisions   [TC_CAKE_MAX_TINS];
  50 +       __u32 peak_delay_us    [TC_CAKE_MAX_TINS]; /* ~= delay to bulk flows */
  51 +       __u32 avge_delay_us    [TC_CAKE_MAX_TINS];
  52 +       __u32 base_delay_us    [TC_CAKE_MAX_TINS]; /* ~= delay to sparse flows */
  53 +       __u16 sparse_flows     [TC_CAKE_MAX_TINS];
  54 +       __u16 bulk_flows       [TC_CAKE_MAX_TINS];
  55 +       __u16 unresponse_flows [TC_CAKE_MAX_TINS]; /* v4 - was u32 last_len  */
  56 +       __u16 spare            [TC_CAKE_MAX_TINS]; /* v4 - split last_len */
  57 +       __u32 max_skblen       [TC_CAKE_MAX_TINS];
  58 +       __u32 capacity_estimate;  /* version 2 */
  59 +       __u32 memory_limit;       /* version 3 */
  60 +       __u32 memory_used;        /* version 3 */
  61 +};
  62 +
  63  #endif
  64 --- a/tc/Makefile
  65 +++ b/tc/Makefile
  66 @@ -63,6 +63,7 @@ TCMODULES += q_codel.o
  67  TCMODULES += q_fq_codel.o
  68  TCMODULES += q_fq.o
  69  TCMODULES += q_pie.o
  70 +TCMODULES += q_cake.o
  71  TCMODULES += q_hhf.o
  72  TCMODULES += e_bpf.o
  73
  74 --- /dev/null
  75 +++ b/tc/q_cake.c
  76 @@ -0,0 +1,686 @@
  77 +/*
  78 + * Common Applications Kept Enhanced  --  CAKE
  79 + *
  80 + *  Copyright (C) 2014-2015 Jonathan Morton <chromatix99@gmail.com>
  81 + *
  82 + * Redistribution and use in source and binary forms, with or without
  83 + * modification, are permitted provided that the following conditions
  84 + * are met:
  85 + * 1. Redistributions of source code must retain the above copyright
  86 + *    notice, this list of conditions, and the following disclaimer,
  87 + *    without modification.
  88 + * 2. Redistributions in binary form must reproduce the above copyright
  89 + *    notice, this list of conditions and the following disclaimer in the
  90 + *    documentation and/or other materials provided with the distribution.
  91 + * 3. The names of the authors may not be used to endorse or promote products
  92 + *    derived from this software without specific prior written permission.
  93 + *
  94 + * Alternatively, provided that this notice is retained in full, this
  95 + * software may be distributed under the terms of the GNU General
  96 + * Public License ("GPL") version 2, in which case the provisions of the
  97 + * GPL apply INSTEAD OF those given above.
  98 + *
  99 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 100 + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 101 + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 102 + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 103 + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 104 + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 105 + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 106 + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 107 + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 108 + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 109 + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 110 + * DAMAGE.
 111 + *
 112 + */
 113 +
 114 +#include <stddef.h>
 115 +#include <stdio.h>
 116 +#include <stdlib.h>
 117 +#include <unistd.h>
 118 +#include <syslog.h>
 119 +#include <fcntl.h>
 120 +#include <sys/socket.h>
 121 +#include <netinet/in.h>
 122 +#include <arpa/inet.h>
 123 +#include <string.h>
 124 +
 125 +#include "utils.h"
 126 +#include "tc_util.h"
 127 +
 128 +static void explain(void)
 129 +{
 130 +       fprintf(stderr, "Usage: ... cake [ bandwidth RATE | unlimited* | autorate_ingress ]\n"
 131 +                       "                [ rtt TIME | datacentre | lan | metro | regional | internet* | oceanic | satellite | interplanetary ]\n"
 132 +                       "                [ besteffort | precedence | diffserv8 | diffserv4 | diffserv-llt | diffserv3* ]\n"
 133 +                       "                [ flowblind | srchost | dsthost | hosts | flows | dual-srchost | dual-dsthost | triple-isolate* ] [ nat | nonat* ]\n"
 134 +                       "                [ ptm | atm | noatm* ] [ overhead N | conservative | raw* ] [ mpu N ]\n"
 135 +                       "                [ wash | nowash* ]\n"
 136 +                       "                [ memlimit LIMIT ]\n"
 137 +                       "    (* marks defaults)\n");
 138 +}
 139 +
 140 +static int cake_parse_opt(struct qdisc_util *qu, int argc, char **argv,
 141 +                             struct nlmsghdr *n)
 142 +{
 143 +       int unlimited = 0;
 144 +       unsigned bandwidth = 0;
 145 +       unsigned interval = 0;
 146 +       unsigned target = 0;
 147 +       unsigned diffserv = 0;
 148 +       unsigned memlimit = 0;
 149 +       int  overhead = 0;
 150 +       bool overhead_set = false;
 151 +       bool overhead_override = false;
 152 +       int wash = -1;
 153 +       int mpu = 0;
 154 +       int flowmode = -1;
 155 +       int nat = -1;
 156 +       int atm = -1;
 157 +       int autorate = -1;
 158 +       struct rtattr *tail;
 159 +
 160 +       while (argc > 0) {
 161 +               if (strcmp(*argv, "bandwidth") == 0) {
 162 +                       NEXT_ARG();
 163 +                       if (get_rate(&bandwidth, *argv)) {
 164 +                               fprintf(stderr, "Illegal \"bandwidth\"\n");
 165 +                               return -1;
 166 +                       }
 167 +                       unlimited = 0;
 168 +                       autorate = 0;
 169 +               } else if (strcmp(*argv, "unlimited") == 0) {
 170 +                       bandwidth = 0;
 171 +                       unlimited = 1;
 172 +                       autorate = 0;
 173 +               } else if (strcmp(*argv, "autorate_ingress") == 0) {
 174 +                       autorate = 1;
 175 +
 176 +               } else if (strcmp(*argv, "rtt") == 0) {
 177 +                       NEXT_ARG();
 178 +                       if (get_time(&interval, *argv)) {
 179 +                               fprintf(stderr, "Illegal \"rtt\"\n");
 180 +                               return -1;
 181 +                       }
 182 +                       target = interval / 20;
 183 +                       if(!target)
 184 +                               target = 1;
 185 +               } else if (strcmp(*argv, "datacentre") == 0) {
 186 +                       interval = 100;
 187 +                       target   =   5;
 188 +               } else if (strcmp(*argv, "lan") == 0) {
 189 +                       interval = 1000;
 190 +                       target   =   50;
 191 +               } else if (strcmp(*argv, "metro") == 0) {
 192 +                       interval = 10000;
 193 +                       target   =   500;
 194 +               } else if (strcmp(*argv, "regional") == 0) {
 195 +                       interval = 30000;
 196 +                       target    = 1500;
 197 +               } else if (strcmp(*argv, "internet") == 0) {
 198 +                       interval = 100000;
 199 +                       target   =   5000;
 200 +               } else if (strcmp(*argv, "oceanic") == 0) {
 201 +                       interval = 300000;
 202 +                       target   =  15000;
 203 +               } else if (strcmp(*argv, "satellite") == 0) {
 204 +                       interval = 1000000;
 205 +                       target   =   50000;
 206 +               } else if (strcmp(*argv, "interplanetary") == 0) {
 207 +                       interval = 3600000000U;
 208 +                       target   =       5000;
 209 +
 210 +               } else if (strcmp(*argv, "besteffort") == 0) {
 211 +                       diffserv = 1;
 212 +               } else if (strcmp(*argv, "precedence") == 0) {
 213 +                       diffserv = 2;
 214 +               } else if (strcmp(*argv, "diffserv8") == 0) {
 215 +                       diffserv = 3;
 216 +               } else if (strcmp(*argv, "diffserv4") == 0) {
 217 +                       diffserv = 4;
 218 +               } else if (strcmp(*argv, "diffserv") == 0) {
 219 +                       diffserv = 4;
 220 +               } else if (strcmp(*argv, "diffserv-llt") == 0) {
 221 +                       diffserv = 5;
 222 +               } else if (strcmp(*argv, "diffserv3") == 0) {
 223 +                       diffserv = 6;
 224 +
 225 +               } else if (strcmp(*argv, "nowash") == 0) {
 226 +                       wash = 0;
 227 +               } else if (strcmp(*argv, "wash") == 0) {
 228 +                       wash = 1;
 229 +
 230 +               } else if (strcmp(*argv, "flowblind") == 0) {
 231 +                       flowmode = 0;
 232 +               } else if (strcmp(*argv, "srchost") == 0) {
 233 +                       flowmode = 1;
 234 +               } else if (strcmp(*argv, "dsthost") == 0) {
 235 +                       flowmode = 2;
 236 +               } else if (strcmp(*argv, "hosts") == 0) {
 237 +                       flowmode = 3;
 238 +               } else if (strcmp(*argv, "flows") == 0) {
 239 +                       flowmode = 4;
 240 +               } else if (strcmp(*argv, "dual-srchost") == 0) {
 241 +                       flowmode = 5;
 242 +               } else if (strcmp(*argv, "dual-dsthost") == 0) {
 243 +                       flowmode = 6;
 244 +               } else if (strcmp(*argv, "triple-isolate") == 0) {
 245 +                       flowmode = 7;
 246 +
 247 +               } else if (strcmp(*argv, "nat") == 0) {
 248 +                       nat = 1;
 249 +               } else if (strcmp(*argv, "nonat") == 0) {
 250 +                       nat = 0;
 251 +
 252 +               } else if (strcmp(*argv, "ptm") == 0) {
 253 +                       atm = 2;
 254 +               } else if (strcmp(*argv, "atm") == 0) {
 255 +                       atm = 1;
 256 +               } else if (strcmp(*argv, "noatm") == 0) {
 257 +                       atm = 0;
 258 +
 259 +               } else if (strcmp(*argv, "raw") == 0) {
 260 +                       atm = 0;
 261 +                       overhead = 0;
 262 +                       overhead_set = true;
 263 +                       overhead_override = true;
 264 +               } else if (strcmp(*argv, "conservative") == 0) {
 265 +                       /*
 266 +                        * Deliberately over-estimate overhead:
 267 +                        * one whole ATM cell plus ATM framing.
 268 +                        * A safe choice if the actual overhead is unknown.
 269 +                        */
 270 +                       atm = 1;
 271 +                       overhead = 48;
 272 +                       overhead_set = true;
 273 +
 274 +               /* Various ADSL framing schemes, all over ATM cells */
 275 +               } else if (strcmp(*argv, "ipoa-vcmux") == 0) {
 276 +                       atm = 1;
 277 +                       overhead += 8;
 278 +                       overhead_set = true;
 279 +               } else if (strcmp(*argv, "ipoa-llcsnap") == 0) {
 280 +                       atm = 1;
 281 +                       overhead += 16;
 282 +                       overhead_set = true;
 283 +               } else if (strcmp(*argv, "bridged-vcmux") == 0) {
 284 +                       atm = 1;
 285 +                       overhead += 24;
 286 +                       overhead_set = true;
 287 +               } else if (strcmp(*argv, "bridged-llcsnap") == 0) {
 288 +                       atm = 1;
 289 +                       overhead += 32;
 290 +                       overhead_set = true;
 291 +               } else if (strcmp(*argv, "pppoa-vcmux") == 0) {
 292 +                       atm = 1;
 293 +                       overhead += 10;
 294 +                       overhead_set = true;
 295 +               } else if (strcmp(*argv, "pppoa-llc") == 0) {
 296 +                       atm = 1;
 297 +                       overhead += 14;
 298 +                       overhead_set = true;
 299 +               } else if (strcmp(*argv, "pppoe-vcmux") == 0) {
 300 +                       atm = 1;
 301 +                       overhead += 32;
 302 +                       overhead_set = true;
 303 +               } else if (strcmp(*argv, "pppoe-llcsnap") == 0) {
 304 +                       atm = 1;
 305 +                       overhead += 40;
 306 +                       overhead_set = true;
 307 +
 308 +               /* Typical VDSL2 framing schemes, both over PTM */
 309 +               /* PTM has 64b/65b coding which absorbs some bandwidth */
 310 +               } else if (strcmp(*argv, "pppoe-ptm") == 0) {
 311 +                       atm = 2;
 312 +                       overhead += 27;
 313 +                       overhead_set = true;
 314 +               } else if (strcmp(*argv, "bridged-ptm") == 0) {
 315 +                       atm = 2;
 316 +                       overhead += 19;
 317 +                       overhead_set = true;
 318 +
 319 +               } else if (strcmp(*argv, "via-ethernet") == 0) {
 320 +                       /*
 321 +                        * We used to use this flag to manually compensate for
 322 +                        * Linux including the Ethernet header on Ethernet-type
 323 +                        * interfaces, but not on IP-type interfaces.
 324 +                        *
 325 +                        * It is no longer needed, because Cake now adjusts for
 326 +                        * that automatically, and is thus ignored.
 327 +                        *
 328 +                        * It would be deleted entirely, but it appears in the
 329 +                        * stats output when the automatic compensation is active.
 330 +                        */
 331 +
 332 +               } else if (strcmp(*argv, "ethernet") == 0) {
 333 +                       /* ethernet pre-amble & interframe gap & FCS
 334 +                        * you may need to add vlan tag */
 335 +                       overhead += 38;
 336 +                       overhead_set = true;
 337 +                       mpu = 84;
 338 +
 339 +               /* Additional Ethernet-related overhead used by some ISPs */
 340 +               } else if (strcmp(*argv, "ether-vlan") == 0) {
 341 +                       /* 802.1q VLAN tag - may be repeated */
 342 +                       overhead += 4;
 343 +                       overhead_set = true;
 344 +
 345 +               /*
 346 +                * DOCSIS cable shapers account for Ethernet frame with FCS,
 347 +                * but not interframe gap nor preamble.
 348 +                */
 349 +               } else if (strcmp(*argv, "docsis") == 0) {
 350 +                       atm = 0;
 351 +                       overhead += 18;
 352 +                       overhead_set = true;
 353 +                       mpu = 64;
 354 +
 355 +               } else if (strcmp(*argv, "overhead") == 0) {
 356 +                       char* p = NULL;
 357 +                       NEXT_ARG();
 358 +                       overhead = strtol(*argv, &p, 10);
 359 +                       if(!p || *p || !*argv || overhead < -64 || overhead > 256) {
 360 +                               fprintf(stderr, "Illegal \"overhead\", valid range is -64 to 256\\n");
 361 +                               return -1;
 362 +                       }
 363 +                       overhead_set = true;
 364 +
 365 +               } else if (strcmp(*argv, "mpu") == 0) {
 366 +                       char* p = NULL;
 367 +                       NEXT_ARG();
 368 +                       mpu = strtol(*argv, &p, 10);
 369 +                       if(!p || *p || !*argv || mpu < 0 || mpu > 256) {
 370 +                               fprintf(stderr, "Illegal \"mpu\", valid range is 0 to 256\\n");
 371 +                               return -1;
 372 +                       }
 373 +
 374 +               } else if (strcmp(*argv, "memlimit") == 0) {
 375 +                       NEXT_ARG();
 376 +                       if(get_size(&memlimit, *argv)) {
 377 +                               fprintf(stderr, "Illegal value for \"memlimit\": \"%s\"\n", *argv);
 378 +                               return -1;
 379 +                       }
 380 +
 381 +               } else if (strcmp(*argv, "help") == 0) {
 382 +                       explain();
 383 +                       return -1;
 384 +               } else {
 385 +                       fprintf(stderr, "What is \"%s\"?\n", *argv);
 386 +                       explain();
 387 +                       return -1;
 388 +               }
 389 +               argc--; argv++;
 390 +       }
 391 +
 392 +       tail = NLMSG_TAIL(n);
 393 +       addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
 394 +       if (bandwidth || unlimited)
 395 +               addattr_l(n, 1024, TCA_CAKE_BASE_RATE, &bandwidth, sizeof(bandwidth));
 396 +       if (diffserv)
 397 +               addattr_l(n, 1024, TCA_CAKE_DIFFSERV_MODE, &diffserv, sizeof(diffserv));
 398 +       if (atm != -1)
 399 +               addattr_l(n, 1024, TCA_CAKE_ATM, &atm, sizeof(atm));
 400 +       if (flowmode != -1)
 401 +               addattr_l(n, 1024, TCA_CAKE_FLOW_MODE, &flowmode, sizeof(flowmode));
 402 +       if (overhead_set)
 403 +               addattr_l(n, 1024, TCA_CAKE_OVERHEAD, &overhead, sizeof(overhead));
 404 +       if (overhead_override) {
 405 +               unsigned zero = 0;
 406 +               addattr_l(n, 1024, TCA_CAKE_ETHERNET, &zero, sizeof(zero));
 407 +       }
 408 +       if (mpu > 0)
 409 +               addattr_l(n, 1024, TCA_CAKE_MPU, &mpu, sizeof(mpu));
 410 +       if (interval)
 411 +               addattr_l(n, 1024, TCA_CAKE_RTT, &interval, sizeof(interval));
 412 +       if (target)
 413 +               addattr_l(n, 1024, TCA_CAKE_TARGET, &target, sizeof(target));
 414 +       if (autorate != -1)
 415 +               addattr_l(n, 1024, TCA_CAKE_AUTORATE, &autorate, sizeof(autorate));
 416 +       if (memlimit)
 417 +               addattr_l(n, 1024, TCA_CAKE_MEMORY, &memlimit, sizeof(memlimit));
 418 +       if (nat != -1)
 419 +               addattr_l(n, 1024, TCA_CAKE_NAT, &nat, sizeof(nat));
 420 +       if (wash != -1)
 421 +               addattr_l(n, 1024, TCA_CAKE_WASH, &wash, sizeof(wash));
 422 +
 423 +       tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
 424 +       return 0;
 425 +}
 426 +
 427 +
 428 +static int cake_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
 429 +{
 430 +       struct rtattr *tb[TCA_CAKE_MAX + 1];
 431 +       unsigned bandwidth = 0;
 432 +       unsigned diffserv = 0;
 433 +       unsigned flowmode = 0;
 434 +       unsigned interval = 0;
 435 +       unsigned memlimit = 0;
 436 +       int overhead = 0;
 437 +       int ethernet = 0;
 438 +       int mpu = 0;
 439 +       int atm = 0;
 440 +       int nat = 0;
 441 +       int autorate = 0;
 442 +       int wash = 0;
 443 +       SPRINT_BUF(b1);
 444 +       SPRINT_BUF(b2);
 445 +
 446 +       if (opt == NULL)
 447 +               return 0;
 448 +
 449 +       parse_rtattr_nested(tb, TCA_CAKE_MAX, opt);
 450 +
 451 +       if (tb[TCA_CAKE_BASE_RATE] &&
 452 +           RTA_PAYLOAD(tb[TCA_CAKE_BASE_RATE]) >= sizeof(__u32)) {
 453 +               bandwidth = rta_getattr_u32(tb[TCA_CAKE_BASE_RATE]);
 454 +               if(bandwidth)
 455 +                       fprintf(f, "bandwidth %s ", sprint_rate(bandwidth, b1));
 456 +               else
 457 +                       fprintf(f, "unlimited ");
 458 +       }
 459 +       if (tb[TCA_CAKE_AUTORATE] &&
 460 +               RTA_PAYLOAD(tb[TCA_CAKE_AUTORATE]) >= sizeof(__u32)) {
 461 +               autorate = rta_getattr_u32(tb[TCA_CAKE_AUTORATE]);
 462 +               if(autorate == 1)
 463 +                       fprintf(f, "autorate_ingress ");
 464 +               else if(autorate)
 465 +                       fprintf(f, "(?autorate?) ");
 466 +       }
 467 +       if (tb[TCA_CAKE_DIFFSERV_MODE] &&
 468 +           RTA_PAYLOAD(tb[TCA_CAKE_DIFFSERV_MODE]) >= sizeof(__u32)) {
 469 +               diffserv = rta_getattr_u32(tb[TCA_CAKE_DIFFSERV_MODE]);
 470 +               switch(diffserv) {
 471 +               case 1:
 472 +                       fprintf(f, "besteffort ");
 473 +                       break;
 474 +               case 2:
 475 +                       fprintf(f, "precedence ");
 476 +                       break;
 477 +               case 3:
 478 +                       fprintf(f, "diffserv8 ");
 479 +                       break;
 480 +               case 4:
 481 +                       fprintf(f, "diffserv4 ");
 482 +                       break;
 483 +               case 5:
 484 +                       fprintf(f, "diffserv-llt ");
 485 +                       break;
 486 +               case 6:
 487 +                       fprintf(f, "diffserv3 ");
 488 +                       break;
 489 +               default:
 490 +                       fprintf(f, "(?diffserv?) ");
 491 +                       break;
 492 +               };
 493 +       }
 494 +       if (tb[TCA_CAKE_FLOW_MODE] &&
 495 +           RTA_PAYLOAD(tb[TCA_CAKE_FLOW_MODE]) >= sizeof(__u32)) {
 496 +               flowmode = rta_getattr_u32(tb[TCA_CAKE_FLOW_MODE]);
 497 +               nat = !!(flowmode & 64);
 498 +               flowmode &= ~64;
 499 +               switch(flowmode) {
 500 +               case 0:
 501 +                       fprintf(f, "flowblind ");
 502 +                       break;
 503 +               case 1:
 504 +                       fprintf(f, "srchost ");
 505 +                       break;
 506 +               case 2:
 507 +                       fprintf(f, "dsthost ");
 508 +                       break;
 509 +               case 3:
 510 +                       fprintf(f, "hosts ");
 511 +                       break;
 512 +               case 4:
 513 +                       fprintf(f, "flows ");
 514 +                       break;
 515 +               case 5:
 516 +                       fprintf(f, "dual-srchost ");
 517 +                       break;
 518 +               case 6:
 519 +                       fprintf(f, "dual-dsthost ");
 520 +                       break;
 521 +               case 7:
 522 +                       fprintf(f, "triple-isolate ");
 523 +                       break;
 524 +               default:
 525 +                       fprintf(f, "(?flowmode?) ");
 526 +                       break;
 527 +               };
 528 +
 529 +               if(nat)
 530 +                       fprintf(f, "nat ");
 531 +       }
 532 +       if (tb[TCA_CAKE_WASH] &&
 533 +           RTA_PAYLOAD(tb[TCA_CAKE_WASH]) >= sizeof(__u32)) {
 534 +               wash = rta_getattr_u32(tb[TCA_CAKE_WASH]);
 535 +       }
 536 +       if (tb[TCA_CAKE_ATM] &&
 537 +           RTA_PAYLOAD(tb[TCA_CAKE_ATM]) >= sizeof(__u32)) {
 538 +               atm = rta_getattr_u32(tb[TCA_CAKE_ATM]);
 539 +       }
 540 +       if (tb[TCA_CAKE_OVERHEAD] &&
 541 +           RTA_PAYLOAD(tb[TCA_CAKE_OVERHEAD]) >= sizeof(__u32)) {
 542 +               overhead = rta_getattr_u32(tb[TCA_CAKE_OVERHEAD]);
 543 +       }
 544 +       if (tb[TCA_CAKE_MPU] &&
 545 +           RTA_PAYLOAD(tb[TCA_CAKE_MPU]) >= sizeof(__u32)) {
 546 +               mpu = rta_getattr_u32(tb[TCA_CAKE_MPU]);
 547 +       }
 548 +       if (tb[TCA_CAKE_ETHERNET] &&
 549 +           RTA_PAYLOAD(tb[TCA_CAKE_ETHERNET]) >= sizeof(__u32)) {
 550 +               ethernet = rta_getattr_u32(tb[TCA_CAKE_ETHERNET]);
 551 +       }
 552 +       if (tb[TCA_CAKE_RTT] &&
 553 +           RTA_PAYLOAD(tb[TCA_CAKE_RTT]) >= sizeof(__u32)) {
 554 +               interval = rta_getattr_u32(tb[TCA_CAKE_RTT]);
 555 +       }
 556 +
 557 +       if (wash)
 558 +               fprintf(f,"wash ");
 559 +
 560 +       if (interval)
 561 +               fprintf(f, "rtt %s ", sprint_time(interval, b2));
 562 +
 563 +       if (!atm && overhead == ethernet) {
 564 +               fprintf(f, "raw ");
 565 +       } else {
 566 +               if (atm == 1)
 567 +                       fprintf(f, "atm ");
 568 +               else if (atm == 2)
 569 +                       fprintf(f, "ptm ");
 570 +               else
 571 +                       fprintf(f, "noatm ");
 572 +
 573 +               fprintf(f, "overhead %d ", overhead);
 574 +
 575 +               // This is actually the *amount* of automatic compensation, but we only report
 576 +               // its presence as a boolean for now.
 577 +               if (ethernet)
 578 +                       fprintf(f, "via-ethernet ");
 579 +       }
 580 +
 581 +       if (mpu) {
 582 +               fprintf(f, "mpu %d ", mpu);
 583 +       }
 584 +
 585 +       if (memlimit)
 586 +               fprintf(f, "memlimit %s", sprint_size(memlimit, b1));
 587 +
 588 +       return 0;
 589 +}
 590 +
 591 +static int cake_print_xstats(struct qdisc_util *qu, FILE *f,
 592 +                                struct rtattr *xstats)
 593 +{
 594 +       /* fq_codel stats format borrowed */
 595 +       struct tc_fq_codel_xstats *st;
 596 +       struct tc_cake_xstats     *stnc;
 597 +       SPRINT_BUF(b1);
 598 +       SPRINT_BUF(b2);
 599 +
 600 +       if (xstats == NULL)
 601 +               return 0;
 602 +
 603 +       if (RTA_PAYLOAD(xstats) < sizeof(st->type))
 604 +               return -1;
 605 +
 606 +       st   = RTA_DATA(xstats);
 607 +       stnc = RTA_DATA(xstats);
 608 +
 609 +       if (st->type == TCA_FQ_CODEL_XSTATS_QDISC && RTA_PAYLOAD(xstats) >= sizeof(*st)) {
 610 +               fprintf(f, "  maxpacket %u drop_overlimit %u new_flow_count %u ecn_mark %u",
 611 +                       st->qdisc_stats.maxpacket,
 612 +                       st->qdisc_stats.drop_overlimit,
 613 +                       st->qdisc_stats.new_flow_count,
 614 +                       st->qdisc_stats.ecn_mark);
 615 +               fprintf(f, "\n  new_flows_len %u old_flows_len %u",
 616 +                       st->qdisc_stats.new_flows_len,
 617 +                       st->qdisc_stats.old_flows_len);
 618 +       } else if (st->type == TCA_FQ_CODEL_XSTATS_CLASS && RTA_PAYLOAD(xstats) >= sizeof(*st)) {
 619 +               fprintf(f, "  deficit %d count %u lastcount %u ldelay %s",
 620 +                       st->class_stats.deficit,
 621 +                       st->class_stats.count,
 622 +                       st->class_stats.lastcount,
 623 +                       sprint_time(st->class_stats.ldelay, b1));
 624 +               if (st->class_stats.dropping) {
 625 +                       fprintf(f, " dropping");
 626 +                       if (st->class_stats.drop_next < 0)
 627 +                               fprintf(f, " drop_next -%s",
 628 +                                       sprint_time(-st->class_stats.drop_next, b1));
 629 +                       else
 630 +                               fprintf(f, " drop_next %s",
 631 +                                       sprint_time(st->class_stats.drop_next, b1));
 632 +               }
 633 +       } else if (stnc->version >= 1 && stnc->version < 0xFF
 634 +                               && stnc->max_tins == TC_CAKE_MAX_TINS
 635 +                               && RTA_PAYLOAD(xstats) >= offsetof(struct tc_cake_xstats, capacity_estimate))
 636 +       {
 637 +               int i;
 638 +
 639 +               if(stnc->version >= 3)
 640 +                       fprintf(f, " memory used: %s of %s\n", sprint_size(stnc->memory_used, b1), sprint_size(stnc->memory_limit, b2));
 641 +
 642 +               if(stnc->version >= 2)
 643 +                       fprintf(f, " capacity estimate: %s\n", sprint_rate(stnc->capacity_estimate, b1));
 644 +
 645 +               switch(stnc->tin_cnt) {
 646 +               case 3:
 647 +                       fprintf(f, "                 Bulk   Best Effort      Voice\n");
 648 +                       break;
 649 +
 650 +               case 4:
 651 +                       fprintf(f, "                 Bulk   Best Effort      Video       Voice\n");
 652 +                       break;
 653 +
 654 +               case 5:
 655 +                       fprintf(f, "              Low Loss  Best Effort   Low Delay       Bulk  Net Control\n");
 656 +                       break;
 657 +
 658 +               default:
 659 +                       fprintf(f, "          ");
 660 +                       for(i=0; i < stnc->tin_cnt; i++)
 661 +                               fprintf(f, "       Tin %u", i);
 662 +                       fprintf(f, "\n");
 663 +               };
 664 +
 665 +               fprintf(f, "  thresh  ");
 666 +               for(i=0; i < stnc->tin_cnt; i++)
 667 +                       fprintf(f, "%12s", sprint_rate(stnc->threshold_rate[i], b1));
 668 +               fprintf(f, "\n");
 669 +
 670 +               fprintf(f, "  target  ");
 671 +               for(i=0; i < stnc->tin_cnt; i++)
 672 +                       fprintf(f, "%12s", sprint_time(stnc->target_us[i], b1));
 673 +               fprintf(f, "\n");
 674 +
 675 +               fprintf(f, "  interval");
 676 +               for(i=0; i < stnc->tin_cnt; i++)
 677 +                       fprintf(f, "%12s", sprint_time(stnc->interval_us[i], b1));
 678 +               fprintf(f, "\n");
 679 +
 680 +               fprintf(f, "  pk_delay");
 681 +               for(i=0; i < stnc->tin_cnt; i++)
 682 +                       fprintf(f, "%12s", sprint_time(stnc->peak_delay_us[i], b1));
 683 +               fprintf(f, "\n");
 684 +
 685 +               fprintf(f, "  av_delay");
 686 +               for(i=0; i < stnc->tin_cnt; i++)
 687 +                       fprintf(f, "%12s", sprint_time(stnc->avge_delay_us[i], b1));
 688 +               fprintf(f, "\n");
 689 +
 690 +               fprintf(f, "  sp_delay");
 691 +               for(i=0; i < stnc->tin_cnt; i++)
 692 +                       fprintf(f, "%12s", sprint_time(stnc->base_delay_us[i], b1));
 693 +               fprintf(f, "\n");
 694 +
 695 +               fprintf(f, "  pkts    ");
 696 +               for(i=0; i < stnc->tin_cnt; i++)
 697 +                       fprintf(f, "%12u", stnc->sent[i].packets);
 698 +               fprintf(f, "\n");
 699 +
 700 +               fprintf(f, "  bytes   ");
 701 +               for(i=0; i < stnc->tin_cnt; i++)
 702 +                       fprintf(f, "%12llu", stnc->sent[i].bytes);
 703 +               fprintf(f, "\n");
 704 +
 705 +               fprintf(f, "  way_inds");
 706 +               for(i=0; i < stnc->tin_cnt; i++)
 707 +                       fprintf(f, "%12u", stnc->way_indirect_hits[i]);
 708 +               fprintf(f, "\n");
 709 +
 710 +               fprintf(f, "  way_miss");
 711 +               for(i=0; i < stnc->tin_cnt; i++)
 712 +                       fprintf(f, "%12u", stnc->way_misses[i]);
 713 +               fprintf(f, "\n");
 714 +
 715 +               fprintf(f, "  way_cols");
 716 +               for(i=0; i < stnc->tin_cnt; i++)
 717 +                       fprintf(f, "%12u", stnc->way_collisions[i]);
 718 +               fprintf(f, "\n");
 719 +
 720 +               fprintf(f, "  drops   ");
 721 +               for(i=0; i < stnc->tin_cnt; i++)
 722 +                       fprintf(f, "%12u", stnc->dropped[i].packets);
 723 +               fprintf(f, "\n");
 724 +
 725 +               fprintf(f, "  marks   ");
 726 +               for(i=0; i < stnc->tin_cnt; i++)
 727 +                       fprintf(f, "%12u", stnc->ecn_marked[i].packets);
 728 +               fprintf(f, "\n");
 729 +
 730 +               fprintf(f, "  sp_flows");
 731 +               for(i=0; i < stnc->tin_cnt; i++)
 732 +                       fprintf(f, "%12u", stnc->sparse_flows[i]);
 733 +               fprintf(f, "\n");
 734 +
 735 +               fprintf(f, "  bk_flows");
 736 +               for(i=0; i < stnc->tin_cnt; i++)
 737 +                       fprintf(f, "%12u", stnc->bulk_flows[i]);
 738 +               fprintf(f, "\n");
 739 +
 740 +               if(stnc->version >= 4) {
 741 +                       fprintf(f, "  un_flows");
 742 +                       for(i=0; i < stnc->tin_cnt; i++)
 743 +                               fprintf(f, "%12u", stnc->unresponse_flows[i]);
 744 +                       fprintf(f, "\n");
 745 +               }
 746 +
 747 +               fprintf(f, "  max_len ");
 748 +               for(i=0; i < stnc->tin_cnt; i++)
 749 +                       fprintf(f, "%12u", stnc->max_skblen[i]);
 750 +               fprintf(f, "\n");
 751 +       } else {
 752 +               return -1;
 753 +       }
 754 +       return 0;
 755 +}
 756 +
 757 +struct qdisc_util cake_qdisc_util = {
 758 +       .id             = "cake",
 759 +       .parse_qopt     = cake_parse_opt,
 760 +       .print_qopt     = cake_print_opt,
 761 +       .print_xstats   = cake_print_xstats,
 762 +};