include/uapi/linux/pkt_sched.h

   1 #ifndef __LINUX_PKT_SCHED_H
   2 #define __LINUX_PKT_SCHED_H
   3
   4 #include <linux/types.h>
   5
   6 /* Logical priority bands not depending on specific packet scheduler.
   7    Every scheduler will map them to real traffic classes, if it has
   8    no more precise mechanism to classify packets.
   9
  10    These numbers have no special meaning, though their coincidence
  11    with obsolete IPv6 values is not occasional :-). New IPv6 drafts
  12    preferred full anarchy inspired by diffserv group.
  13
  14    Note: TC_PRIO_BESTEFFORT does not mean that it is the most unhappy
  15    class, actually, as rule it will be handled with more care than
  16    filler or even bulk.
  17  */
  18
  19 #define TC_PRIO_BESTEFFORT              0
  20 #define TC_PRIO_FILLER                  1
  21 #define TC_PRIO_BULK                    2
  22 #define TC_PRIO_INTERACTIVE_BULK        4
  23 #define TC_PRIO_INTERACTIVE             6
  24 #define TC_PRIO_CONTROL                 7
  25
  26 #define TC_PRIO_MAX                     15
  27
  28 /* Generic queue statistics, available for all the elements.
  29    Particular schedulers may have also their private records.
  30  */
  31
  32 struct tc_stats {
  33         __u64   bytes;                  /* Number of enqueued bytes */
  34         __u32   packets;                /* Number of enqueued packets   */
  35         __u32   drops;                  /* Packets dropped because of lack of resources */
  36         __u32   overlimits;             /* Number of throttle events when this
  37                                          * flow goes out of allocated bandwidth */
  38         __u32   bps;                    /* Current flow byte rate */
  39         __u32   pps;                    /* Current flow packet rate */
  40         __u32   qlen;
  41         __u32   backlog;
  42 };
  43
  44 struct tc_estimator {
  45         signed char     interval;
  46         unsigned char   ewma_log;
  47 };
  48
  49 /* "Handles"
  50    ---------
  51
  52     All the traffic control objects have 32bit identifiers, or "handles".
  53
  54     They can be considered as opaque numbers from user API viewpoint,
  55     but actually they always consist of two fields: major and
  56     minor numbers, which are interpreted by kernel specially,
  57     that may be used by applications, though not recommended.
  58
  59     F.e. qdisc handles always have minor number equal to zero,
  60     classes (or flows) have major equal to parent qdisc major, and
  61     minor uniquely identifying class inside qdisc.
  62
  63     Macros to manipulate handles:
  64  */
  65
  66 #define TC_H_MAJ_MASK (0xFFFF0000U)
  67 #define TC_H_MIN_MASK (0x0000FFFFU)
  68 #define TC_H_MAJ(h) ((h)&TC_H_MAJ_MASK)
  69 #define TC_H_MIN(h) ((h)&TC_H_MIN_MASK)
  70 #define TC_H_MAKE(maj,min) (((maj)&TC_H_MAJ_MASK)|((min)&TC_H_MIN_MASK))
  71
  72 #define TC_H_UNSPEC     (0U)
  73 #define TC_H_ROOT       (0xFFFFFFFFU)
  74 #define TC_H_INGRESS    (0xFFFFFFF1U)
  75 #define TC_H_CLSACT     TC_H_INGRESS
  76
  77 #define TC_H_MIN_INGRESS        0xFFF2U
  78 #define TC_H_MIN_EGRESS         0xFFF3U
  79
  80 /* Need to corrospond to iproute2 tc/tc_core.h "enum link_layer" */
  81 enum tc_link_layer {
  82         TC_LINKLAYER_UNAWARE, /* Indicate unaware old iproute2 util */
  83         TC_LINKLAYER_ETHERNET,
  84         TC_LINKLAYER_ATM,
  85 };
  86 #define TC_LINKLAYER_MASK 0x0F /* limit use to lower 4 bits */
  87
  88 struct tc_ratespec {
  89         unsigned char   cell_log;
  90         __u8            linklayer; /* lower 4 bits */
  91         unsigned short  overhead;
  92         short           cell_align;
  93         unsigned short  mpu;
  94         __u32           rate;
  95 };
  96
  97 #define TC_RTAB_SIZE    1024
  98
  99 struct tc_sizespec {
 100         unsigned char   cell_log;
 101         unsigned char   size_log;
 102         short           cell_align;
 103         int             overhead;
 104         unsigned int    linklayer;
 105         unsigned int    mpu;
 106         unsigned int    mtu;
 107         unsigned int    tsize;
 108 };
 109
 110 enum {
 111         TCA_STAB_UNSPEC,
 112         TCA_STAB_BASE,
 113         TCA_STAB_DATA,
 114         __TCA_STAB_MAX
 115 };
 116
 117 #define TCA_STAB_MAX (__TCA_STAB_MAX - 1)
 118
 119 /* FIFO section */
 120
 121 struct tc_fifo_qopt {
 122         __u32   limit;  /* Queue length: bytes for bfifo, packets for pfifo */
 123 };
 124
 125 /* PRIO section */
 126
 127 #define TCQ_PRIO_BANDS  16
 128 #define TCQ_MIN_PRIO_BANDS 2
 129
 130 struct tc_prio_qopt {
 131         int     bands;                  /* Number of bands */
 132         __u8    priomap[TC_PRIO_MAX+1]; /* Map: logical priority -> PRIO band */
 133 };
 134
 135 /* MULTIQ section */
 136
 137 struct tc_multiq_qopt {
 138         __u16   bands;                  /* Number of bands */
 139         __u16   max_bands;              /* Maximum number of queues */
 140 };
 141
 142 /* PLUG section */
 143
 144 #define TCQ_PLUG_BUFFER                0
 145 #define TCQ_PLUG_RELEASE_ONE           1
 146 #define TCQ_PLUG_RELEASE_INDEFINITE    2
 147 #define TCQ_PLUG_LIMIT                 3
 148
 149 struct tc_plug_qopt {
 150         /* TCQ_PLUG_BUFFER: Inset a plug into the queue and
 151          *  buffer any incoming packets
 152          * TCQ_PLUG_RELEASE_ONE: Dequeue packets from queue head
 153          *   to beginning of the next plug.
 154          * TCQ_PLUG_RELEASE_INDEFINITE: Dequeue all packets from queue.
 155          *   Stop buffering packets until the next TCQ_PLUG_BUFFER
 156          *   command is received (just act as a pass-thru queue).
 157          * TCQ_PLUG_LIMIT: Increase/decrease queue size
 158          */
 159         int             action;
 160         __u32           limit;
 161 };
 162
 163 /* TBF section */
 164
 165 struct tc_tbf_qopt {
 166         struct tc_ratespec rate;
 167         struct tc_ratespec peakrate;
 168         __u32           limit;
 169         __u32           buffer;
 170         __u32           mtu;
 171 };
 172
 173 enum {
 174         TCA_TBF_UNSPEC,
 175         TCA_TBF_PARMS,
 176         TCA_TBF_RTAB,
 177         TCA_TBF_PTAB,
 178         TCA_TBF_RATE64,
 179         TCA_TBF_PRATE64,
 180         TCA_TBF_BURST,
 181         TCA_TBF_PBURST,
 182         TCA_TBF_PAD,
 183         __TCA_TBF_MAX,
 184 };
 185
 186 #define TCA_TBF_MAX (__TCA_TBF_MAX - 1)
 187
 188
 189 /* TEQL section */
 190
 191 /* TEQL does not require any parameters */
 192
 193 /* SFQ section */
 194
 195 struct tc_sfq_qopt {
 196         unsigned        quantum;        /* Bytes per round allocated to flow */
 197         int             perturb_period; /* Period of hash perturbation */
 198         __u32           limit;          /* Maximal packets in queue */
 199         unsigned        divisor;        /* Hash divisor  */
 200         unsigned        flows;          /* Maximal number of flows  */
 201 };
 202
 203 struct tc_sfqred_stats {
 204         __u32           prob_drop;      /* Early drops, below max threshold */
 205         __u32           forced_drop;    /* Early drops, after max threshold */
 206         __u32           prob_mark;      /* Marked packets, below max threshold */
 207         __u32           forced_mark;    /* Marked packets, after max threshold */
 208         __u32           prob_mark_head; /* Marked packets, below max threshold */
 209         __u32           forced_mark_head;/* Marked packets, after max threshold */
 210 };
 211
 212 struct tc_sfq_qopt_v1 {
 213         struct tc_sfq_qopt v0;
 214         unsigned int    depth;          /* max number of packets per flow */
 215         unsigned int    headdrop;
 216 /* SFQRED parameters */
 217         __u32           limit;          /* HARD maximal flow queue length (bytes) */
 218         __u32           qth_min;        /* Min average length threshold (bytes) */
 219         __u32           qth_max;        /* Max average length threshold (bytes) */
 220         unsigned char   Wlog;           /* log(W)               */
 221         unsigned char   Plog;           /* log(P_max/(qth_max-qth_min)) */
 222         unsigned char   Scell_log;      /* cell size for idle damping */
 223         unsigned char   flags;
 224         __u32           max_P;          /* probability, high resolution */
 225 /* SFQRED stats */
 226         struct tc_sfqred_stats stats;
 227 };
 228
 229
 230 struct tc_sfq_xstats {
 231         __s32           allot;
 232 };
 233
 234 /* RED section */
 235
 236 enum {
 237         TCA_RED_UNSPEC,
 238         TCA_RED_PARMS,
 239         TCA_RED_STAB,
 240         TCA_RED_MAX_P,
 241         __TCA_RED_MAX,
 242 };
 243
 244 #define TCA_RED_MAX (__TCA_RED_MAX - 1)
 245
 246 struct tc_red_qopt {
 247         __u32           limit;          /* HARD maximal queue length (bytes)    */
 248         __u32           qth_min;        /* Min average length threshold (bytes) */
 249         __u32           qth_max;        /* Max average length threshold (bytes) */
 250         unsigned char   Wlog;           /* log(W)               */
 251         unsigned char   Plog;           /* log(P_max/(qth_max-qth_min)) */
 252         unsigned char   Scell_log;      /* cell size for idle damping */
 253         unsigned char   flags;
 254 #define TC_RED_ECN              1
 255 #define TC_RED_HARDDROP         2
 256 #define TC_RED_ADAPTATIVE       4
 257 };
 258
 259 struct tc_red_xstats {
 260         __u32           early;          /* Early drops */
 261         __u32           pdrop;          /* Drops due to queue limits */
 262         __u32           other;          /* Drops due to drop() calls */
 263         __u32           marked;         /* Marked packets */
 264 };
 265
 266 /* GRED section */
 267
 268 #define MAX_DPs 16
 269
 270 enum {
 271        TCA_GRED_UNSPEC,
 272        TCA_GRED_PARMS,
 273        TCA_GRED_STAB,
 274        TCA_GRED_DPS,
 275        TCA_GRED_MAX_P,
 276        TCA_GRED_LIMIT,
 277        __TCA_GRED_MAX,
 278 };
 279
 280 #define TCA_GRED_MAX (__TCA_GRED_MAX - 1)
 281
 282 struct tc_gred_qopt {
 283         __u32           limit;        /* HARD maximal queue length (bytes)    */
 284         __u32           qth_min;      /* Min average length threshold (bytes) */
 285         __u32           qth_max;      /* Max average length threshold (bytes) */
 286         __u32           DP;           /* up to 2^32 DPs */
 287         __u32           backlog;
 288         __u32           qave;
 289         __u32           forced;
 290         __u32           early;
 291         __u32           other;
 292         __u32           pdrop;
 293         __u8            Wlog;         /* log(W)               */
 294         __u8            Plog;         /* log(P_max/(qth_max-qth_min)) */
 295         __u8            Scell_log;    /* cell size for idle damping */
 296         __u8            prio;         /* prio of this VQ */
 297         __u32           packets;
 298         __u32           bytesin;
 299 };
 300
 301 /* gred setup */
 302 struct tc_gred_sopt {
 303         __u32           DPs;
 304         __u32           def_DP;
 305         __u8            grio;
 306         __u8            flags;
 307         __u16           pad1;
 308 };
 309
 310 /* CHOKe section */
 311
 312 enum {
 313         TCA_CHOKE_UNSPEC,
 314         TCA_CHOKE_PARMS,
 315         TCA_CHOKE_STAB,
 316         TCA_CHOKE_MAX_P,
 317         __TCA_CHOKE_MAX,
 318 };
 319
 320 #define TCA_CHOKE_MAX (__TCA_CHOKE_MAX - 1)
 321
 322 struct tc_choke_qopt {
 323         __u32           limit;          /* Hard queue length (packets)  */
 324         __u32           qth_min;        /* Min average threshold (packets) */
 325         __u32           qth_max;        /* Max average threshold (packets) */
 326         unsigned char   Wlog;           /* log(W)               */
 327         unsigned char   Plog;           /* log(P_max/(qth_max-qth_min)) */
 328         unsigned char   Scell_log;      /* cell size for idle damping */
 329         unsigned char   flags;          /* see RED flags */
 330 };
 331
 332 struct tc_choke_xstats {
 333         __u32           early;          /* Early drops */
 334         __u32           pdrop;          /* Drops due to queue limits */
 335         __u32           other;          /* Drops due to drop() calls */
 336         __u32           marked;         /* Marked packets */
 337         __u32           matched;        /* Drops due to flow match */
 338 };
 339
 340 /* HTB section */
 341 #define TC_HTB_NUMPRIO          8
 342 #define TC_HTB_MAXDEPTH         8
 343 #define TC_HTB_PROTOVER         3 /* the same as HTB and TC's major */
 344
 345 struct tc_htb_opt {
 346         struct tc_ratespec      rate;
 347         struct tc_ratespec      ceil;
 348         __u32   buffer;
 349         __u32   cbuffer;
 350         __u32   quantum;
 351         __u32   level;          /* out only */
 352         __u32   prio;
 353 };
 354 struct tc_htb_glob {
 355         __u32 version;          /* to match HTB/TC */
 356         __u32 rate2quantum;     /* bps->quantum divisor */
 357         __u32 defcls;           /* default class number */
 358         __u32 debug;            /* debug flags */
 359
 360         /* stats */
 361         __u32 direct_pkts; /* count of non shaped packets */
 362 };
 363 enum {
 364         TCA_HTB_UNSPEC,
 365         TCA_HTB_PARMS,
 366         TCA_HTB_INIT,
 367         TCA_HTB_CTAB,
 368         TCA_HTB_RTAB,
 369         TCA_HTB_DIRECT_QLEN,
 370         TCA_HTB_RATE64,
 371         TCA_HTB_CEIL64,
 372         TCA_HTB_PAD,
 373         __TCA_HTB_MAX,
 374 };
 375
 376 #define TCA_HTB_MAX (__TCA_HTB_MAX - 1)
 377
 378 struct tc_htb_xstats {
 379         __u32 lends;
 380         __u32 borrows;
 381         __u32 giants;   /* too big packets (rate will not be accurate) */
 382         __u32 tokens;
 383         __u32 ctokens;
 384 };
 385
 386 /* HFSC section */
 387
 388 struct tc_hfsc_qopt {
 389         __u16   defcls;         /* default class */
 390 };
 391
 392 struct tc_service_curve {
 393         __u32   m1;             /* slope of the first segment in bps */
 394         __u32   d;              /* x-projection of the first segment in us */
 395         __u32   m2;             /* slope of the second segment in bps */
 396 };
 397
 398 struct tc_hfsc_stats {
 399         __u64   work;           /* total work done */
 400         __u64   rtwork;         /* work done by real-time criteria */
 401         __u32   period;         /* current period */
 402         __u32   level;          /* class level in hierarchy */
 403 };
 404
 405 enum {
 406         TCA_HFSC_UNSPEC,
 407         TCA_HFSC_RSC,
 408         TCA_HFSC_FSC,
 409         TCA_HFSC_USC,
 410         __TCA_HFSC_MAX,
 411 };
 412
 413 #define TCA_HFSC_MAX (__TCA_HFSC_MAX - 1)
 414
 415
 416 /* CBQ section */
 417
 418 #define TC_CBQ_MAXPRIO          8
 419 #define TC_CBQ_MAXLEVEL         8
 420 #define TC_CBQ_DEF_EWMA         5
 421
 422 struct tc_cbq_lssopt {
 423         unsigned char   change;
 424         unsigned char   flags;
 425 #define TCF_CBQ_LSS_BOUNDED     1
 426 #define TCF_CBQ_LSS_ISOLATED    2
 427         unsigned char   ewma_log;
 428         unsigned char   level;
 429 #define TCF_CBQ_LSS_FLAGS       1
 430 #define TCF_CBQ_LSS_EWMA        2
 431 #define TCF_CBQ_LSS_MAXIDLE     4
 432 #define TCF_CBQ_LSS_MINIDLE     8
 433 #define TCF_CBQ_LSS_OFFTIME     0x10
 434 #define TCF_CBQ_LSS_AVPKT       0x20
 435         __u32           maxidle;
 436         __u32           minidle;
 437         __u32           offtime;
 438         __u32           avpkt;
 439 };
 440
 441 struct tc_cbq_wrropt {
 442         unsigned char   flags;
 443         unsigned char   priority;
 444         unsigned char   cpriority;
 445         unsigned char   __reserved;
 446         __u32           allot;
 447         __u32           weight;
 448 };
 449
 450 struct tc_cbq_ovl {
 451         unsigned char   strategy;
 452 #define TC_CBQ_OVL_CLASSIC      0
 453 #define TC_CBQ_OVL_DELAY        1
 454 #define TC_CBQ_OVL_LOWPRIO      2
 455 #define TC_CBQ_OVL_DROP         3
 456 #define TC_CBQ_OVL_RCLASSIC     4
 457         unsigned char   priority2;
 458         __u16           pad;
 459         __u32           penalty;
 460 };
 461
 462 struct tc_cbq_police {
 463         unsigned char   police;
 464         unsigned char   __res1;
 465         unsigned short  __res2;
 466 };
 467
 468 struct tc_cbq_fopt {
 469         __u32           split;
 470         __u32           defmap;
 471         __u32           defchange;
 472 };
 473
 474 struct tc_cbq_xstats {
 475         __u32           borrows;
 476         __u32           overactions;
 477         __s32           avgidle;
 478         __s32           undertime;
 479 };
 480
 481 enum {
 482         TCA_CBQ_UNSPEC,
 483         TCA_CBQ_LSSOPT,
 484         TCA_CBQ_WRROPT,
 485         TCA_CBQ_FOPT,
 486         TCA_CBQ_OVL_STRATEGY,
 487         TCA_CBQ_RATE,
 488         TCA_CBQ_RTAB,
 489         TCA_CBQ_POLICE,
 490         __TCA_CBQ_MAX,
 491 };
 492
 493 #define TCA_CBQ_MAX     (__TCA_CBQ_MAX - 1)
 494
 495 /* dsmark section */
 496
 497 enum {
 498         TCA_DSMARK_UNSPEC,
 499         TCA_DSMARK_INDICES,
 500         TCA_DSMARK_DEFAULT_INDEX,
 501         TCA_DSMARK_SET_TC_INDEX,
 502         TCA_DSMARK_MASK,
 503         TCA_DSMARK_VALUE,
 504         __TCA_DSMARK_MAX,
 505 };
 506
 507 #define TCA_DSMARK_MAX (__TCA_DSMARK_MAX - 1)
 508
 509 /* ATM  section */
 510
 511 enum {
 512         TCA_ATM_UNSPEC,
 513         TCA_ATM_FD,             /* file/socket descriptor */
 514         TCA_ATM_PTR,            /* pointer to descriptor - later */
 515         TCA_ATM_HDR,            /* LL header */
 516         TCA_ATM_EXCESS,         /* excess traffic class (0 for CLP)  */
 517         TCA_ATM_ADDR,           /* PVC address (for output only) */
 518         TCA_ATM_STATE,          /* VC state (ATM_VS_*; for output only) */
 519         __TCA_ATM_MAX,
 520 };
 521
 522 #define TCA_ATM_MAX     (__TCA_ATM_MAX - 1)
 523
 524 /* Network emulator */
 525
 526 enum {
 527         TCA_NETEM_UNSPEC,
 528         TCA_NETEM_CORR,
 529         TCA_NETEM_DELAY_DIST,
 530         TCA_NETEM_REORDER,
 531         TCA_NETEM_CORRUPT,
 532         TCA_NETEM_LOSS,
 533         TCA_NETEM_RATE,
 534         TCA_NETEM_ECN,
 535         TCA_NETEM_RATE64,
 536         TCA_NETEM_PAD,
 537         __TCA_NETEM_MAX,
 538 };
 539
 540 #define TCA_NETEM_MAX (__TCA_NETEM_MAX - 1)
 541
 542 struct tc_netem_qopt {
 543         __u32   latency;        /* added delay (us) */
 544         __u32   limit;          /* fifo limit (packets) */
 545         __u32   loss;           /* random packet loss (0=none ~0=100%) */
 546         __u32   gap;            /* re-ordering gap (0 for none) */
 547         __u32   duplicate;      /* random packet dup  (0=none ~0=100%) */
 548         __u32   jitter;         /* random jitter in latency (us) */
 549 };
 550
 551 struct tc_netem_corr {
 552         __u32   delay_corr;     /* delay correlation */
 553         __u32   loss_corr;      /* packet loss correlation */
 554         __u32   dup_corr;       /* duplicate correlation  */
 555 };
 556
 557 struct tc_netem_reorder {
 558         __u32   probability;
 559         __u32   correlation;
 560 };
 561
 562 struct tc_netem_corrupt {
 563         __u32   probability;
 564         __u32   correlation;
 565 };
 566
 567 struct tc_netem_rate {
 568         __u32   rate;   /* byte/s */
 569         __s32   packet_overhead;
 570         __u32   cell_size;
 571         __s32   cell_overhead;
 572 };
 573
 574 enum {
 575         NETEM_LOSS_UNSPEC,
 576         NETEM_LOSS_GI,          /* General Intuitive - 4 state model */
 577         NETEM_LOSS_GE,          /* Gilbert Elliot models */
 578         __NETEM_LOSS_MAX
 579 };
 580 #define NETEM_LOSS_MAX (__NETEM_LOSS_MAX - 1)
 581
 582 /* State transition probabilities for 4 state model */
 583 struct tc_netem_gimodel {
 584         __u32   p13;
 585         __u32   p31;
 586         __u32   p32;
 587         __u32   p14;
 588         __u32   p23;
 589 };
 590
 591 /* Gilbert-Elliot models */
 592 struct tc_netem_gemodel {
 593         __u32 p;
 594         __u32 r;
 595         __u32 h;
 596         __u32 k1;
 597 };
 598
 599 #define NETEM_DIST_SCALE        8192
 600 #define NETEM_DIST_MAX          16384
 601
 602 /* DRR */
 603
 604 enum {
 605         TCA_DRR_UNSPEC,
 606         TCA_DRR_QUANTUM,
 607         __TCA_DRR_MAX
 608 };
 609
 610 #define TCA_DRR_MAX     (__TCA_DRR_MAX - 1)
 611
 612 struct tc_drr_stats {
 613         __u32   deficit;
 614 };
 615
 616 /* MQPRIO */
 617 #define TC_QOPT_BITMASK 15
 618 #define TC_QOPT_MAX_QUEUE 16
 619
 620 enum {
 621         TC_MQPRIO_HW_OFFLOAD_NONE,      /* no offload requested */
 622         TC_MQPRIO_HW_OFFLOAD_TCS,       /* offload TCs, no queue counts */
 623         __TC_MQPRIO_HW_OFFLOAD_MAX
 624 };
 625
 626 #define TC_MQPRIO_HW_OFFLOAD_MAX (__TC_MQPRIO_HW_OFFLOAD_MAX - 1)
 627
 628 struct tc_mqprio_qopt {
 629         __u8    num_tc;
 630         __u8    prio_tc_map[TC_QOPT_BITMASK + 1];
 631         __u8    hw;
 632         __u16   count[TC_QOPT_MAX_QUEUE];
 633         __u16   offset[TC_QOPT_MAX_QUEUE];
 634 };
 635
 636 /* SFB */
 637
 638 enum {
 639         TCA_SFB_UNSPEC,
 640         TCA_SFB_PARMS,
 641         __TCA_SFB_MAX,
 642 };
 643
 644 #define TCA_SFB_MAX (__TCA_SFB_MAX - 1)
 645
 646 /*
 647  * Note: increment, decrement are Q0.16 fixed-point values.
 648  */
 649 struct tc_sfb_qopt {
 650         __u32 rehash_interval;  /* delay between hash move, in ms */
 651         __u32 warmup_time;      /* double buffering warmup time in ms (warmup_time < rehash_interval) */
 652         __u32 max;              /* max len of qlen_min */
 653         __u32 bin_size;         /* maximum queue length per bin */
 654         __u32 increment;        /* probability increment, (d1 in Blue) */
 655         __u32 decrement;        /* probability decrement, (d2 in Blue) */
 656         __u32 limit;            /* max SFB queue length */
 657         __u32 penalty_rate;     /* inelastic flows are rate limited to 'rate' pps */
 658         __u32 penalty_burst;
 659 };
 660
 661 struct tc_sfb_xstats {
 662         __u32 earlydrop;
 663         __u32 penaltydrop;
 664         __u32 bucketdrop;
 665         __u32 queuedrop;
 666         __u32 childdrop; /* drops in child qdisc */
 667         __u32 marked;
 668         __u32 maxqlen;
 669         __u32 maxprob;
 670         __u32 avgprob;
 671 };
 672
 673 #define SFB_MAX_PROB 0xFFFF
 674
 675 /* QFQ */
 676 enum {
 677         TCA_QFQ_UNSPEC,
 678         TCA_QFQ_WEIGHT,
 679         TCA_QFQ_LMAX,
 680         __TCA_QFQ_MAX
 681 };
 682
 683 #define TCA_QFQ_MAX     (__TCA_QFQ_MAX - 1)
 684
 685 struct tc_qfq_stats {
 686         __u32 weight;
 687         __u32 lmax;
 688 };
 689
 690 /* CODEL */
 691
 692 enum {
 693         TCA_CODEL_UNSPEC,
 694         TCA_CODEL_TARGET,
 695         TCA_CODEL_LIMIT,
 696         TCA_CODEL_INTERVAL,
 697         TCA_CODEL_ECN,
 698         TCA_CODEL_CE_THRESHOLD,
 699         __TCA_CODEL_MAX
 700 };
 701
 702 #define TCA_CODEL_MAX   (__TCA_CODEL_MAX - 1)
 703
 704 struct tc_codel_xstats {
 705         __u32   maxpacket; /* largest packet we've seen so far */
 706         __u32   count;     /* how many drops we've done since the last time we
 707                             * entered dropping state
 708                             */
 709         __u32   lastcount; /* count at entry to dropping state */
 710         __u32   ldelay;    /* in-queue delay seen by most recently dequeued packet */
 711         __s32   drop_next; /* time to drop next packet */
 712         __u32   drop_overlimit; /* number of time max qdisc packet limit was hit */
 713         __u32   ecn_mark;  /* number of packets we ECN marked instead of dropped */
 714         __u32   dropping;  /* are we in dropping state ? */
 715         __u32   ce_mark;   /* number of CE marked packets because of ce_threshold */
 716 };
 717
 718 /* FQ_CODEL */
 719
 720 enum {
 721         TCA_FQ_CODEL_UNSPEC,
 722         TCA_FQ_CODEL_TARGET,
 723         TCA_FQ_CODEL_LIMIT,
 724         TCA_FQ_CODEL_INTERVAL,
 725         TCA_FQ_CODEL_ECN,
 726         TCA_FQ_CODEL_FLOWS,
 727         TCA_FQ_CODEL_QUANTUM,
 728         TCA_FQ_CODEL_CE_THRESHOLD,
 729         TCA_FQ_CODEL_DROP_BATCH_SIZE,
 730         TCA_FQ_CODEL_MEMORY_LIMIT,
 731         __TCA_FQ_CODEL_MAX
 732 };
 733
 734 #define TCA_FQ_CODEL_MAX        (__TCA_FQ_CODEL_MAX - 1)
 735
 736 enum {
 737         TCA_FQ_CODEL_XSTATS_QDISC,
 738         TCA_FQ_CODEL_XSTATS_CLASS,
 739 };
 740
 741 struct tc_fq_codel_qd_stats {
 742         __u32   maxpacket;      /* largest packet we've seen so far */
 743         __u32   drop_overlimit; /* number of time max qdisc
 744                                  * packet limit was hit
 745                                  */
 746         __u32   ecn_mark;       /* number of packets we ECN marked
 747                                  * instead of being dropped
 748                                  */
 749         __u32   new_flow_count; /* number of time packets
 750                                  * created a 'new flow'
 751                                  */
 752         __u32   new_flows_len;  /* count of flows in new list */
 753         __u32   old_flows_len;  /* count of flows in old list */
 754         __u32   ce_mark;        /* packets above ce_threshold */
 755         __u32   memory_usage;   /* in bytes */
 756         __u32   drop_overmemory;
 757 };
 758
 759 struct tc_fq_codel_cl_stats {
 760         __s32   deficit;
 761         __u32   ldelay;         /* in-queue delay seen by most recently
 762                                  * dequeued packet
 763                                  */
 764         __u32   count;
 765         __u32   lastcount;
 766         __u32   dropping;
 767         __s32   drop_next;
 768 };
 769
 770 struct tc_fq_codel_xstats {
 771         __u32   type;
 772         union {
 773                 struct tc_fq_codel_qd_stats qdisc_stats;
 774                 struct tc_fq_codel_cl_stats class_stats;
 775         };
 776 };
 777
 778 /* FQ */
 779
 780 enum {
 781         TCA_FQ_UNSPEC,
 782
 783         TCA_FQ_PLIMIT,          /* limit of total number of packets in queue */
 784
 785         TCA_FQ_FLOW_PLIMIT,     /* limit of packets per flow */
 786
 787         TCA_FQ_QUANTUM,         /* RR quantum */
 788
 789         TCA_FQ_INITIAL_QUANTUM,         /* RR quantum for new flow */
 790
 791         TCA_FQ_RATE_ENABLE,     /* enable/disable rate limiting */
 792
 793         TCA_FQ_FLOW_DEFAULT_RATE,/* obsolete, do not use */
 794
 795         TCA_FQ_FLOW_MAX_RATE,   /* per flow max rate */
 796
 797         TCA_FQ_BUCKETS_LOG,     /* log2(number of buckets) */
 798
 799         TCA_FQ_FLOW_REFILL_DELAY,       /* flow credit refill delay in usec */
 800
 801         TCA_FQ_ORPHAN_MASK,     /* mask applied to orphaned skb hashes */
 802
 803         TCA_FQ_LOW_RATE_THRESHOLD, /* per packet delay under this rate */
 804
 805         __TCA_FQ_MAX
 806 };
 807
 808 #define TCA_FQ_MAX      (__TCA_FQ_MAX - 1)
 809
 810 struct tc_fq_qd_stats {
 811         __u64   gc_flows;
 812         __u64   highprio_packets;
 813         __u64   tcp_retrans;
 814         __u64   throttled;
 815         __u64   flows_plimit;
 816         __u64   pkts_too_long;
 817         __u64   allocation_errors;
 818         __s64   time_next_delayed_flow;
 819         __u32   flows;
 820         __u32   inactive_flows;
 821         __u32   throttled_flows;
 822         __u32   unthrottle_latency_ns;
 823 };
 824
 825 /* Heavy-Hitter Filter */
 826
 827 enum {
 828         TCA_HHF_UNSPEC,
 829         TCA_HHF_BACKLOG_LIMIT,
 830         TCA_HHF_QUANTUM,
 831         TCA_HHF_HH_FLOWS_LIMIT,
 832         TCA_HHF_RESET_TIMEOUT,
 833         TCA_HHF_ADMIT_BYTES,
 834         TCA_HHF_EVICT_TIMEOUT,
 835         TCA_HHF_NON_HH_WEIGHT,
 836         __TCA_HHF_MAX
 837 };
 838
 839 #define TCA_HHF_MAX     (__TCA_HHF_MAX - 1)
 840
 841 struct tc_hhf_xstats {
 842         __u32   drop_overlimit; /* number of times max qdisc packet limit
 843                                  * was hit
 844                                  */
 845         __u32   hh_overlimit;   /* number of times max heavy-hitters was hit */
 846         __u32   hh_tot_count;   /* number of captured heavy-hitters so far */
 847         __u32   hh_cur_count;   /* number of current heavy-hitters */
 848 };
 849
 850 /* PIE */
 851 enum {
 852         TCA_PIE_UNSPEC,
 853         TCA_PIE_TARGET,
 854         TCA_PIE_LIMIT,
 855         TCA_PIE_TUPDATE,
 856         TCA_PIE_ALPHA,
 857         TCA_PIE_BETA,
 858         TCA_PIE_ECN,
 859         TCA_PIE_BYTEMODE,
 860         __TCA_PIE_MAX
 861 };
 862 #define TCA_PIE_MAX   (__TCA_PIE_MAX - 1)
 863
 864 struct tc_pie_xstats {
 865         __u32 prob;             /* current probability */
 866         __u32 delay;            /* current delay in ms */
 867         __u32 avg_dq_rate;      /* current average dq_rate in bits/pie_time */
 868         __u32 packets_in;       /* total number of packets enqueued */
 869         __u32 dropped;          /* packets dropped due to pie_action */
 870         __u32 overlimit;        /* dropped due to lack of space in queue */
 871         __u32 maxq;             /* maximum queue size */
 872         __u32 ecn_mark;         /* packets marked with ecn*/
 873 };
 874 #endif