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

   1 diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h
   2 index 8d2530d..028b83c 100644
   3 --- a/include/linux/pkt_sched.h
   4 +++ b/include/linux/pkt_sched.h
   5 @@ -850,4 +850,59 @@ struct tc_pie_xstats {
   6         __u32 maxq;             /* maximum queue size */
   7         __u32 ecn_mark;         /* packets marked with ecn*/
   8  };
   9 +
  10 +/* CAKE */
  11 +enum {
  12 +       TCA_CAKE_UNSPEC,
  13 +       TCA_CAKE_BASE_RATE,
  14 +       TCA_CAKE_DIFFSERV_MODE,
  15 +       TCA_CAKE_ATM,
  16 +       TCA_CAKE_FLOW_MODE,
  17 +       TCA_CAKE_OVERHEAD,
  18 +       TCA_CAKE_RTT,
  19 +       TCA_CAKE_TARGET,
  20 +       TCA_CAKE_AUTORATE,
  21 +       TCA_CAKE_MEMORY,
  22 +       TCA_CAKE_NAT,
  23 +       TCA_CAKE_ETHERNET,
  24 +       TCA_CAKE_WASH,
  25 +       __TCA_CAKE_MAX
  26 +};
  27 +#define TCA_CAKE_MAX   (__TCA_CAKE_MAX - 1)
  28 +
  29 +struct tc_cake_traffic_stats {
  30 +       __u32 packets;
  31 +       __u32 link_ms;
  32 +       __u64 bytes;
  33 +};
  34 +
  35 +#define TC_CAKE_MAX_TINS (8)
  36 +struct tc_cake_xstats {
  37 +       __u16 version;  /* == 4, increments when struct extended */
  38 +       __u8  max_tins; /* == TC_CAKE_MAX_TINS */
  39 +       __u8  tin_cnt;  /* <= TC_CAKE_MAX_TINS */
  40 +
  41 +       __u32 threshold_rate   [TC_CAKE_MAX_TINS];
  42 +       __u32 target_us        [TC_CAKE_MAX_TINS];
  43 +       struct tc_cake_traffic_stats sent      [TC_CAKE_MAX_TINS];
  44 +       struct tc_cake_traffic_stats dropped   [TC_CAKE_MAX_TINS];
  45 +       struct tc_cake_traffic_stats ecn_marked[TC_CAKE_MAX_TINS];
  46 +       struct tc_cake_traffic_stats backlog   [TC_CAKE_MAX_TINS];
  47 +       __u32 interval_us      [TC_CAKE_MAX_TINS];
  48 +       __u32 way_indirect_hits[TC_CAKE_MAX_TINS];
  49 +       __u32 way_misses       [TC_CAKE_MAX_TINS];
  50 +       __u32 way_collisions   [TC_CAKE_MAX_TINS];
  51 +       __u32 peak_delay_us    [TC_CAKE_MAX_TINS]; /* ~= delay to bulk flows */
  52 +       __u32 avge_delay_us    [TC_CAKE_MAX_TINS];
  53 +       __u32 base_delay_us    [TC_CAKE_MAX_TINS]; /* ~= delay to sparse flows */
  54 +       __u16 sparse_flows     [TC_CAKE_MAX_TINS];
  55 +       __u16 bulk_flows       [TC_CAKE_MAX_TINS];
  56 +       __u16 unresponse_flows [TC_CAKE_MAX_TINS]; /* v4 - was u32 last_len  */
  57 +       __u16 spare            [TC_CAKE_MAX_TINS]; /* v4 - split last_len */
  58 +       __u32 max_skblen       [TC_CAKE_MAX_TINS];
  59 +       __u32 capacity_estimate;  /* version 2 */
  60 +       __u32 memory_limit;       /* version 3 */
  61 +       __u32 memory_used;        /* version 3 */
  62 +};
  63 +
  64  #endif
  65 diff --git a/tc/Makefile b/tc/Makefile
  66 index 56acbaa..d421b8e 100644
  67 --- a/tc/Makefile
  68 +++ b/tc/Makefile
  69 @@ -63,6 +63,7 @@ TCMODULES += q_codel.o
  70  TCMODULES += q_fq_codel.o
  71  TCMODULES += q_fq.o
  72  TCMODULES += q_pie.o
  73 +TCMODULES += q_cake.o
  74  TCMODULES += q_hhf.o
  75  TCMODULES += e_bpf.o
  76
  77 diff --git a/tc/q_cake.c b/tc/q_cake.c
  78 new file mode 100644
  79 index 0000000..14e5aab
  80 --- /dev/null
  81 +++ b/tc/q_cake.c
  82 @@ -0,0 +1,654 @@
  83 +/*
  84 + * Common Applications Kept Enhanced  --  CAKE
  85 + *
  86 + *  Copyright (C) 2014-2015 Jonathan Morton <chromatix99@gmail.com>
  87 + *
  88 + * Redistribution and use in source and binary forms, with or without
  89 + * modification, are permitted provided that the following conditions
  90 + * are met:
  91 + * 1. Redistributions of source code must retain the above copyright
  92 + *    notice, this list of conditions, and the following disclaimer,
  93 + *    without modification.
  94 + * 2. Redistributions in binary form must reproduce the above copyright
  95 + *    notice, this list of conditions and the following disclaimer in the
  96 + *    documentation and/or other materials provided with the distribution.
  97 + * 3. The names of the authors may not be used to endorse or promote products
  98 + *    derived from this software without specific prior written permission.
  99 + *
 100 + * Alternatively, provided that this notice is retained in full, this
 101 + * software may be distributed under the terms of the GNU General
 102 + * Public License ("GPL") version 2, in which case the provisions of the
 103 + * GPL apply INSTEAD OF those given above.
 104 + *
 105 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 106 + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 107 + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 108 + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 109 + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 110 + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 111 + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 112 + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 113 + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 114 + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 115 + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 116 + * DAMAGE.
 117 + *
 118 + */
 119 +
 120 +#include <stddef.h>
 121 +#include <stdio.h>
 122 +#include <stdlib.h>
 123 +#include <unistd.h>
 124 +#include <syslog.h>
 125 +#include <fcntl.h>
 126 +#include <sys/socket.h>
 127 +#include <netinet/in.h>
 128 +#include <arpa/inet.h>
 129 +#include <string.h>
 130 +
 131 +#include "utils.h"
 132 +#include "tc_util.h"
 133 +
 134 +static void explain(void)
 135 +{
 136 +       fprintf(stderr, "Usage: ... cake [ bandwidth RATE | unlimited* | autorate_ingress ]\n"
 137 +                       "                [ rtt TIME | datacentre | lan | metro | regional | internet* | oceanic | satellite | interplanetary ]\n"
 138 +                       "                [ besteffort | precedence | diffserv8 | diffserv4* ]\n"
 139 +                       "                [ flowblind | srchost | dsthost | hosts | flows* | dual-srchost | dual-dsthost | triple-isolate ] [ nat | nonat* ]\n"
 140 +                       "                [ ptm | atm | noatm* ] [ overhead N | conservative | raw* ]\n"
 141 +                       "                [ wash | nowash* ]\n"
 142 +                       "                [ memlimit LIMIT ]\n"
 143 +                       "    (* marks defaults)\n");
 144 +}
 145 +
 146 +static int cake_parse_opt(struct qdisc_util *qu, int argc, char **argv,
 147 +                             struct nlmsghdr *n)
 148 +{
 149 +       int unlimited = 0;
 150 +       unsigned bandwidth = 0;
 151 +       unsigned interval = 0;
 152 +       unsigned target = 0;
 153 +       unsigned diffserv = 0;
 154 +       unsigned memlimit = 0;
 155 +       int  overhead = 0;
 156 +       bool overhead_set = false;
 157 +       bool overhead_override = false;
 158 +       int wash = -1;
 159 +       int flowmode = -1;
 160 +       int nat = -1;
 161 +       int atm = -1;
 162 +       int autorate = -1;
 163 +       struct rtattr *tail;
 164 +
 165 +       while (argc > 0) {
 166 +               if (strcmp(*argv, "bandwidth") == 0) {
 167 +                       NEXT_ARG();
 168 +                       if (get_rate(&bandwidth, *argv)) {
 169 +                               fprintf(stderr, "Illegal \"bandwidth\"\n");
 170 +                               return -1;
 171 +                       }
 172 +                       unlimited = 0;
 173 +                       autorate = 0;
 174 +               } else if (strcmp(*argv, "unlimited") == 0) {
 175 +                       bandwidth = 0;
 176 +                       unlimited = 1;
 177 +                       autorate = 0;
 178 +               } else if (strcmp(*argv, "autorate_ingress") == 0) {
 179 +                       autorate = 1;
 180 +
 181 +               } else if (strcmp(*argv, "rtt") == 0) {
 182 +                       NEXT_ARG();
 183 +                       if (get_time(&interval, *argv)) {
 184 +                               fprintf(stderr, "Illegal \"rtt\"\n");
 185 +                               return -1;
 186 +                       }
 187 +                       target = interval / 20;
 188 +                       if(!target)
 189 +                               target = 1;
 190 +               } else if (strcmp(*argv, "datacentre") == 0) {
 191 +                       interval = 100;
 192 +                       target   =   5;
 193 +               } else if (strcmp(*argv, "lan") == 0) {
 194 +                       interval = 1000;
 195 +                       target   =   50;
 196 +               } else if (strcmp(*argv, "metro") == 0) {
 197 +                       interval = 10000;
 198 +                       target   =   500;
 199 +               } else if (strcmp(*argv, "regional") == 0) {
 200 +                       interval = 30000;
 201 +                       target    = 1500;
 202 +               } else if (strcmp(*argv, "internet") == 0) {
 203 +                       interval = 100000;
 204 +                       target   =   5000;
 205 +               } else if (strcmp(*argv, "oceanic") == 0) {
 206 +                       interval = 300000;
 207 +                       target   =  15000;
 208 +               } else if (strcmp(*argv, "satellite") == 0) {
 209 +                       interval = 1000000;
 210 +                       target   =   50000;
 211 +               } else if (strcmp(*argv, "interplanetary") == 0) {
 212 +                       interval = 3600000000U;
 213 +                       target   =       5000;
 214 +
 215 +               } else if (strcmp(*argv, "besteffort") == 0) {
 216 +                       diffserv = 1;
 217 +               } else if (strcmp(*argv, "precedence") == 0) {
 218 +                       diffserv = 2;
 219 +               } else if (strcmp(*argv, "diffserv8") == 0) {
 220 +                       diffserv = 3;
 221 +               } else if (strcmp(*argv, "diffserv4") == 0) {
 222 +                       diffserv = 4;
 223 +               } else if (strcmp(*argv, "diffserv") == 0) {
 224 +                       diffserv = 4;
 225 +               } else if (strcmp(*argv, "diffserv-llt") == 0) {
 226 +                       diffserv = 5;
 227 +
 228 +               } else if (strcmp(*argv, "nowash") == 0) {
 229 +                       wash = 0;
 230 +               } else if (strcmp(*argv, "wash") == 0) {
 231 +                       wash = 1;
 232 +
 233 +               } else if (strcmp(*argv, "flowblind") == 0) {
 234 +                       flowmode = 0;
 235 +               } else if (strcmp(*argv, "srchost") == 0) {
 236 +                       flowmode = 1;
 237 +               } else if (strcmp(*argv, "dsthost") == 0) {
 238 +                       flowmode = 2;
 239 +               } else if (strcmp(*argv, "hosts") == 0) {
 240 +                       flowmode = 3;
 241 +               } else if (strcmp(*argv, "flows") == 0) {
 242 +                       flowmode = 4;
 243 +               } else if (strcmp(*argv, "dual-srchost") == 0) {
 244 +                       flowmode = 5;
 245 +               } else if (strcmp(*argv, "dual-dsthost") == 0) {
 246 +                       flowmode = 6;
 247 +               } else if (strcmp(*argv, "triple-isolate") == 0) {
 248 +                       flowmode = 7;
 249 +
 250 +               } else if (strcmp(*argv, "nat") == 0) {
 251 +                       nat = 1;
 252 +               } else if (strcmp(*argv, "nonat") == 0) {
 253 +                       nat = 0;
 254 +
 255 +               } else if (strcmp(*argv, "ptm") == 0) {
 256 +                       atm = 2;
 257 +               } else if (strcmp(*argv, "atm") == 0) {
 258 +                       atm = 1;
 259 +               } else if (strcmp(*argv, "noatm") == 0) {
 260 +                       atm = 0;
 261 +
 262 +               } else if (strcmp(*argv, "raw") == 0) {
 263 +                       atm = 0;
 264 +                       overhead = 0;
 265 +                       overhead_set = true;
 266 +                       overhead_override = true;
 267 +               } else if (strcmp(*argv, "conservative") == 0) {
 268 +                       /*
 269 +                        * Deliberately over-estimate overhead:
 270 +                        * one whole ATM cell plus ATM framing.
 271 +                        * A safe choice if the actual overhead is unknown.
 272 +                        */
 273 +                       atm = 1;
 274 +                       overhead = 48;
 275 +                       overhead_set = true;
 276 +
 277 +               /* Various ADSL framing schemes, all over ATM cells */
 278 +               } else if (strcmp(*argv, "ipoa-vcmux") == 0) {
 279 +                       atm = 1;
 280 +                       overhead += 8;
 281 +                       overhead_set = true;
 282 +               } else if (strcmp(*argv, "ipoa-llcsnap") == 0) {
 283 +                       atm = 1;
 284 +                       overhead += 16;
 285 +                       overhead_set = true;
 286 +               } else if (strcmp(*argv, "bridged-vcmux") == 0) {
 287 +                       atm = 1;
 288 +                       overhead += 24;
 289 +                       overhead_set = true;
 290 +               } else if (strcmp(*argv, "bridged-llcsnap") == 0) {
 291 +                       atm = 1;
 292 +                       overhead += 32;
 293 +                       overhead_set = true;
 294 +               } else if (strcmp(*argv, "pppoa-vcmux") == 0) {
 295 +                       atm = 1;
 296 +                       overhead += 10;
 297 +                       overhead_set = true;
 298 +               } else if (strcmp(*argv, "pppoa-llc") == 0) {
 299 +                       atm = 1;
 300 +                       overhead += 14;
 301 +                       overhead_set = true;
 302 +               } else if (strcmp(*argv, "pppoe-vcmux") == 0) {
 303 +                       atm = 1;
 304 +                       overhead += 32;
 305 +                       overhead_set = true;
 306 +               } else if (strcmp(*argv, "pppoe-llcsnap") == 0) {
 307 +                       atm = 1;
 308 +                       overhead += 40;
 309 +                       overhead_set = true;
 310 +
 311 +               /* Typical VDSL2 framing schemes, both over PTM */
 312 +               /* PTM has 64b/65b coding which absorbs some bandwidth */
 313 +               } else if (strcmp(*argv, "pppoe-ptm") == 0) {
 314 +                       atm = 2;
 315 +                       overhead += 27;
 316 +                       overhead_set = true;
 317 +               } else if (strcmp(*argv, "bridged-ptm") == 0) {
 318 +                       atm = 2;
 319 +                       overhead += 19;
 320 +                       overhead_set = true;
 321 +
 322 +               } else if (strcmp(*argv, "via-ethernet") == 0) {
 323 +                       /*
 324 +                        * We used to use this flag to manually compensate for
 325 +                        * Linux including the Ethernet header on Ethernet-type
 326 +                        * interfaces, but not on IP-type interfaces.
 327 +                        *
 328 +                        * It is no longer needed, because Cake now adjusts for
 329 +                        * that automatically, and is thus ignored.
 330 +                        *
 331 +                        * It would be deleted entirely, but it appears in the
 332 +                        * stats output when the automatic compensation is active.
 333 +                        */
 334 +
 335 +               } else if (strcmp(*argv, "ethernet") == 0) {
 336 +                       /* ethernet pre-amble & interframe gap & FCS
 337 +                        * you may need to add vlan tag */
 338 +                       overhead += 38;
 339 +                       overhead_set = true;
 340 +
 341 +               /* Additional Ethernet-related overhead used by some ISPs */
 342 +               } else if (strcmp(*argv, "ether-vlan") == 0) {
 343 +                       /* 802.1q VLAN tag - may be repeated */
 344 +                       overhead += 4;
 345 +                       overhead_set = true;
 346 +
 347 +               /*
 348 +                * DOCSIS cable shapers account for Ethernet frame with FCS,
 349 +                * but not interframe gap nor preamble.
 350 +                */
 351 +               } else if (strcmp(*argv, "docsis") == 0) {
 352 +                       atm = 0;
 353 +                       overhead += 18;
 354 +                       overhead_set = true;
 355 +
 356 +               } else if (strcmp(*argv, "overhead") == 0) {
 357 +                       char* p = NULL;
 358 +                       NEXT_ARG();
 359 +                       overhead = strtol(*argv, &p, 10);
 360 +                       if(!p || *p || !*argv || overhead < -64 || overhead > 256) {
 361 +                               fprintf(stderr, "Illegal \"overhead\", valid range is -64 to 256\\n");
 362 +                               return -1;
 363 +                       }
 364 +                       overhead_set = true;
 365 +
 366 +               } else if (strcmp(*argv, "memlimit") == 0) {
 367 +                       NEXT_ARG();
 368 +                       if(get_size(&memlimit, *argv)) {
 369 +                               fprintf(stderr, "Illegal value for \"memlimit\": \"%s\"\n", *argv);
 370 +                               return -1;
 371 +                       }
 372 +
 373 +               } else if (strcmp(*argv, "help") == 0) {
 374 +                       explain();
 375 +                       return -1;
 376 +               } else {
 377 +                       fprintf(stderr, "What is \"%s\"?\n", *argv);
 378 +                       explain();
 379 +                       return -1;
 380 +               }
 381 +               argc--; argv++;
 382 +       }
 383 +
 384 +       tail = NLMSG_TAIL(n);
 385 +       addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
 386 +       if (bandwidth || unlimited)
 387 +               addattr_l(n, 1024, TCA_CAKE_BASE_RATE, &bandwidth, sizeof(bandwidth));
 388 +       if (diffserv)
 389 +               addattr_l(n, 1024, TCA_CAKE_DIFFSERV_MODE, &diffserv, sizeof(diffserv));
 390 +       if (atm != -1)
 391 +               addattr_l(n, 1024, TCA_CAKE_ATM, &atm, sizeof(atm));
 392 +       if (flowmode != -1)
 393 +               addattr_l(n, 1024, TCA_CAKE_FLOW_MODE, &flowmode, sizeof(flowmode));
 394 +       if (overhead_set)
 395 +               addattr_l(n, 1024, TCA_CAKE_OVERHEAD, &overhead, sizeof(overhead));
 396 +       if (overhead_override) {
 397 +               unsigned zero = 0;
 398 +               addattr_l(n, 1024, TCA_CAKE_ETHERNET, &zero, sizeof(zero));
 399 +       }
 400 +       if (interval)
 401 +               addattr_l(n, 1024, TCA_CAKE_RTT, &interval, sizeof(interval));
 402 +       if (target)
 403 +               addattr_l(n, 1024, TCA_CAKE_TARGET, &target, sizeof(target));
 404 +       if (autorate != -1)
 405 +               addattr_l(n, 1024, TCA_CAKE_AUTORATE, &autorate, sizeof(autorate));
 406 +       if (memlimit)
 407 +               addattr_l(n, 1024, TCA_CAKE_MEMORY, &memlimit, sizeof(memlimit));
 408 +       if (nat != -1)
 409 +               addattr_l(n, 1024, TCA_CAKE_NAT, &nat, sizeof(nat));
 410 +       if (wash != -1)
 411 +               addattr_l(n, 1024, TCA_CAKE_WASH, &wash, sizeof(wash));
 412 +
 413 +       tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
 414 +       return 0;
 415 +}
 416 +
 417 +
 418 +static int cake_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
 419 +{
 420 +       struct rtattr *tb[TCA_CAKE_MAX + 1];
 421 +       unsigned bandwidth = 0;
 422 +       unsigned diffserv = 0;
 423 +       unsigned flowmode = 0;
 424 +       unsigned interval = 0;
 425 +       unsigned memlimit = 0;
 426 +       int overhead = 0;
 427 +       int ethernet = 0;
 428 +       int atm = 0;
 429 +       int nat = 0;
 430 +       int autorate = 0;
 431 +       int wash = 0;
 432 +       SPRINT_BUF(b1);
 433 +       SPRINT_BUF(b2);
 434 +
 435 +       if (opt == NULL)
 436 +               return 0;
 437 +
 438 +       parse_rtattr_nested(tb, TCA_CAKE_MAX, opt);
 439 +
 440 +       if (tb[TCA_CAKE_BASE_RATE] &&
 441 +           RTA_PAYLOAD(tb[TCA_CAKE_BASE_RATE]) >= sizeof(__u32)) {
 442 +               bandwidth = rta_getattr_u32(tb[TCA_CAKE_BASE_RATE]);
 443 +               if(bandwidth)
 444 +                       fprintf(f, "bandwidth %s ", sprint_rate(bandwidth, b1));
 445 +               else
 446 +                       fprintf(f, "unlimited ");
 447 +       }
 448 +       if (tb[TCA_CAKE_AUTORATE] &&
 449 +               RTA_PAYLOAD(tb[TCA_CAKE_AUTORATE]) >= sizeof(__u32)) {
 450 +               autorate = rta_getattr_u32(tb[TCA_CAKE_AUTORATE]);
 451 +               if(autorate == 1)
 452 +                       fprintf(f, "autorate_ingress ");
 453 +               else if(autorate)
 454 +                       fprintf(f, "(?autorate?) ");
 455 +       }
 456 +       if (tb[TCA_CAKE_DIFFSERV_MODE] &&
 457 +           RTA_PAYLOAD(tb[TCA_CAKE_DIFFSERV_MODE]) >= sizeof(__u32)) {
 458 +               diffserv = rta_getattr_u32(tb[TCA_CAKE_DIFFSERV_MODE]);
 459 +               switch(diffserv) {
 460 +               case 1:
 461 +                       fprintf(f, "besteffort ");
 462 +                       break;
 463 +               case 2:
 464 +                       fprintf(f, "precedence ");
 465 +                       break;
 466 +               case 3:
 467 +                       fprintf(f, "diffserv8 ");
 468 +                       break;
 469 +               case 4:
 470 +                       fprintf(f, "diffserv4 ");
 471 +                       break;
 472 +               case 5:
 473 +                       fprintf(f, "diffserv-llt ");
 474 +                       break;
 475 +               default:
 476 +                       fprintf(f, "(?diffserv?) ");
 477 +                       break;
 478 +               };
 479 +       }
 480 +       if (tb[TCA_CAKE_FLOW_MODE] &&
 481 +           RTA_PAYLOAD(tb[TCA_CAKE_FLOW_MODE]) >= sizeof(__u32)) {
 482 +               flowmode = rta_getattr_u32(tb[TCA_CAKE_FLOW_MODE]);
 483 +               nat = !!(flowmode & 64);
 484 +               flowmode &= ~64;
 485 +               switch(flowmode) {
 486 +               case 0:
 487 +                       fprintf(f, "flowblind ");
 488 +                       break;
 489 +               case 1:
 490 +                       fprintf(f, "srchost ");
 491 +                       break;
 492 +               case 2:
 493 +                       fprintf(f, "dsthost ");
 494 +                       break;
 495 +               case 3:
 496 +                       fprintf(f, "hosts ");
 497 +                       break;
 498 +               case 4:
 499 +                       fprintf(f, "flows ");
 500 +                       break;
 501 +               case 5:
 502 +                       fprintf(f, "dual-srchost ");
 503 +                       break;
 504 +               case 6:
 505 +                       fprintf(f, "dual-dsthost ");
 506 +                       break;
 507 +               case 7:
 508 +                       fprintf(f, "triple-isolate ");
 509 +                       break;
 510 +               default:
 511 +                       fprintf(f, "(?flowmode?) ");
 512 +                       break;
 513 +               };
 514 +
 515 +               if(nat)
 516 +                       fprintf(f, "nat ");
 517 +       }
 518 +       if (tb[TCA_CAKE_WASH] &&
 519 +           RTA_PAYLOAD(tb[TCA_CAKE_WASH]) >= sizeof(__u32)) {
 520 +               wash = rta_getattr_u32(tb[TCA_CAKE_WASH]);
 521 +       }
 522 +       if (tb[TCA_CAKE_ATM] &&
 523 +           RTA_PAYLOAD(tb[TCA_CAKE_ATM]) >= sizeof(__u32)) {
 524 +               atm = rta_getattr_u32(tb[TCA_CAKE_ATM]);
 525 +       }
 526 +       if (tb[TCA_CAKE_OVERHEAD] &&
 527 +           RTA_PAYLOAD(tb[TCA_CAKE_OVERHEAD]) >= sizeof(__u32)) {
 528 +               overhead = rta_getattr_u32(tb[TCA_CAKE_OVERHEAD]);
 529 +       }
 530 +       if (tb[TCA_CAKE_ETHERNET] &&
 531 +           RTA_PAYLOAD(tb[TCA_CAKE_ETHERNET]) >= sizeof(__u32)) {
 532 +               ethernet = rta_getattr_u32(tb[TCA_CAKE_ETHERNET]);
 533 +       }
 534 +       if (tb[TCA_CAKE_RTT] &&
 535 +           RTA_PAYLOAD(tb[TCA_CAKE_RTT]) >= sizeof(__u32)) {
 536 +               interval = rta_getattr_u32(tb[TCA_CAKE_RTT]);
 537 +       }
 538 +
 539 +       if (wash)
 540 +               fprintf(f,"wash ");
 541 +
 542 +       if (interval)
 543 +               fprintf(f, "rtt %s ", sprint_time(interval, b2));
 544 +
 545 +       if (!atm && overhead == ethernet) {
 546 +               fprintf(f, "raw ");
 547 +       } else {
 548 +               if (atm == 1)
 549 +                       fprintf(f, "atm ");
 550 +               else if (atm == 2)
 551 +                       fprintf(f, "ptm ");
 552 +               else
 553 +                       fprintf(f, "noatm ");
 554 +
 555 +               fprintf(f, "overhead %d ", overhead);
 556 +
 557 +               // This is actually the *amount* of automatic compensation, but we only report
 558 +               // its presence as a boolean for now.
 559 +               if (ethernet)
 560 +                       fprintf(f, "via-ethernet ");
 561 +       }
 562 +
 563 +       if (memlimit)
 564 +               fprintf(f, "memlimit %s", sprint_size(memlimit, b1));
 565 +
 566 +       return 0;
 567 +}
 568 +
 569 +static int cake_print_xstats(struct qdisc_util *qu, FILE *f,
 570 +                                struct rtattr *xstats)
 571 +{
 572 +       /* fq_codel stats format borrowed */
 573 +       struct tc_fq_codel_xstats *st;
 574 +       struct tc_cake_xstats     *stnc;
 575 +       SPRINT_BUF(b1);
 576 +       SPRINT_BUF(b2);
 577 +
 578 +       if (xstats == NULL)
 579 +               return 0;
 580 +
 581 +       if (RTA_PAYLOAD(xstats) < sizeof(st->type))
 582 +               return -1;
 583 +
 584 +       st   = RTA_DATA(xstats);
 585 +       stnc = RTA_DATA(xstats);
 586 +
 587 +       if (st->type == TCA_FQ_CODEL_XSTATS_QDISC && RTA_PAYLOAD(xstats) >= sizeof(*st)) {
 588 +               fprintf(f, "  maxpacket %u drop_overlimit %u new_flow_count %u ecn_mark %u",
 589 +                       st->qdisc_stats.maxpacket,
 590 +                       st->qdisc_stats.drop_overlimit,
 591 +                       st->qdisc_stats.new_flow_count,
 592 +                       st->qdisc_stats.ecn_mark);
 593 +               fprintf(f, "\n  new_flows_len %u old_flows_len %u",
 594 +                       st->qdisc_stats.new_flows_len,
 595 +                       st->qdisc_stats.old_flows_len);
 596 +       } else if (st->type == TCA_FQ_CODEL_XSTATS_CLASS && RTA_PAYLOAD(xstats) >= sizeof(*st)) {
 597 +               fprintf(f, "  deficit %d count %u lastcount %u ldelay %s",
 598 +                       st->class_stats.deficit,
 599 +                       st->class_stats.count,
 600 +                       st->class_stats.lastcount,
 601 +                       sprint_time(st->class_stats.ldelay, b1));
 602 +               if (st->class_stats.dropping) {
 603 +                       fprintf(f, " dropping");
 604 +                       if (st->class_stats.drop_next < 0)
 605 +                               fprintf(f, " drop_next -%s",
 606 +                                       sprint_time(-st->class_stats.drop_next, b1));
 607 +                       else
 608 +                               fprintf(f, " drop_next %s",
 609 +                                       sprint_time(st->class_stats.drop_next, b1));
 610 +               }
 611 +       } else if (stnc->version >= 1 && stnc->version < 0xFF
 612 +                               && stnc->max_tins == TC_CAKE_MAX_TINS
 613 +                               && RTA_PAYLOAD(xstats) >= offsetof(struct tc_cake_xstats, capacity_estimate))
 614 +       {
 615 +               int i;
 616 +
 617 +               if(stnc->version >= 3)
 618 +                       fprintf(f, " memory used: %s of %s\n", sprint_size(stnc->memory_used, b1), sprint_size(stnc->memory_limit, b2));
 619 +
 620 +               if(stnc->version >= 2)
 621 +                       fprintf(f, " capacity estimate: %s\n", sprint_rate(stnc->capacity_estimate, b1));
 622 +
 623 +               switch(stnc->tin_cnt) {
 624 +               case 4:
 625 +                       fprintf(f, "                 Bulk   Best Effort      Video       Voice\n");
 626 +                       break;
 627 +
 628 +               case 5:
 629 +                       fprintf(f, "              Low Loss  Best Effort   Low Delay       Bulk  Net Control\n");
 630 +                       break;
 631 +
 632 +               default:
 633 +                       fprintf(f, "          ");
 634 +                       for(i=0; i < stnc->tin_cnt; i++)
 635 +                               fprintf(f, "       Tin %u", i);
 636 +                       fprintf(f, "\n");
 637 +               };
 638 +
 639 +               fprintf(f, "  thresh  ");
 640 +               for(i=0; i < stnc->tin_cnt; i++)
 641 +                       fprintf(f, "%12s", sprint_rate(stnc->threshold_rate[i], b1));
 642 +               fprintf(f, "\n");
 643 +
 644 +               fprintf(f, "  target  ");
 645 +               for(i=0; i < stnc->tin_cnt; i++)
 646 +                       fprintf(f, "%12s", sprint_time(stnc->target_us[i], b1));
 647 +               fprintf(f, "\n");
 648 +
 649 +               fprintf(f, "  interval");
 650 +               for(i=0; i < stnc->tin_cnt; i++)
 651 +                       fprintf(f, "%12s", sprint_time(stnc->interval_us[i], b1));
 652 +               fprintf(f, "\n");
 653 +
 654 +               fprintf(f, "  pk_delay");
 655 +               for(i=0; i < stnc->tin_cnt; i++)
 656 +                       fprintf(f, "%12s", sprint_time(stnc->peak_delay_us[i], b1));
 657 +               fprintf(f, "\n");
 658 +
 659 +               fprintf(f, "  av_delay");
 660 +               for(i=0; i < stnc->tin_cnt; i++)
 661 +                       fprintf(f, "%12s", sprint_time(stnc->avge_delay_us[i], b1));
 662 +               fprintf(f, "\n");
 663 +
 664 +               fprintf(f, "  sp_delay");
 665 +               for(i=0; i < stnc->tin_cnt; i++)
 666 +                       fprintf(f, "%12s", sprint_time(stnc->base_delay_us[i], b1));
 667 +               fprintf(f, "\n");
 668 +
 669 +               fprintf(f, "  pkts    ");
 670 +               for(i=0; i < stnc->tin_cnt; i++)
 671 +                       fprintf(f, "%12u", stnc->sent[i].packets);
 672 +               fprintf(f, "\n");
 673 +
 674 +               fprintf(f, "  bytes   ");
 675 +               for(i=0; i < stnc->tin_cnt; i++)
 676 +                       fprintf(f, "%12llu", stnc->sent[i].bytes);
 677 +               fprintf(f, "\n");
 678 +
 679 +               fprintf(f, "  way_inds");
 680 +               for(i=0; i < stnc->tin_cnt; i++)
 681 +                       fprintf(f, "%12u", stnc->way_indirect_hits[i]);
 682 +               fprintf(f, "\n");
 683 +
 684 +               fprintf(f, "  way_miss");
 685 +               for(i=0; i < stnc->tin_cnt; i++)
 686 +                       fprintf(f, "%12u", stnc->way_misses[i]);
 687 +               fprintf(f, "\n");
 688 +
 689 +               fprintf(f, "  way_cols");
 690 +               for(i=0; i < stnc->tin_cnt; i++)
 691 +                       fprintf(f, "%12u", stnc->way_collisions[i]);
 692 +               fprintf(f, "\n");
 693 +
 694 +               fprintf(f, "  drops   ");
 695 +               for(i=0; i < stnc->tin_cnt; i++)
 696 +                       fprintf(f, "%12u", stnc->dropped[i].packets);
 697 +               fprintf(f, "\n");
 698 +
 699 +               fprintf(f, "  marks   ");
 700 +               for(i=0; i < stnc->tin_cnt; i++)
 701 +                       fprintf(f, "%12u", stnc->ecn_marked[i].packets);
 702 +               fprintf(f, "\n");
 703 +
 704 +               fprintf(f, "  sp_flows");
 705 +               for(i=0; i < stnc->tin_cnt; i++)
 706 +                       fprintf(f, "%12u", stnc->sparse_flows[i]);
 707 +               fprintf(f, "\n");
 708 +
 709 +               fprintf(f, "  bk_flows");
 710 +               for(i=0; i < stnc->tin_cnt; i++)
 711 +                       fprintf(f, "%12u", stnc->bulk_flows[i]);
 712 +               fprintf(f, "\n");
 713 +
 714 +               if(stnc->version >= 4) {
 715 +                       fprintf(f, "  un_flows");
 716 +                       for(i=0; i < stnc->tin_cnt; i++)
 717 +                               fprintf(f, "%12u", stnc->unresponse_flows[i]);
 718 +                       fprintf(f, "\n");
 719 +               }
 720 +
 721 +               fprintf(f, "  max_len ");
 722 +               for(i=0; i < stnc->tin_cnt; i++)
 723 +                       fprintf(f, "%12u", stnc->max_skblen[i]);
 724 +               fprintf(f, "\n");
 725 +       } else {
 726 +               return -1;
 727 +       }
 728 +       return 0;
 729 +}
 730 +
 731 +struct qdisc_util cake_qdisc_util = {
 732 +       .id             = "cake",
 733 +       .parse_qopt     = cake_parse_opt,
 734 +       .print_qopt     = cake_print_opt,
 735 +       .print_xstats   = cake_print_xstats,
 736 +};