sys/net/ifq_var.h

   1 /*-
   2  * Copyright (c) 2005 The DragonFly Project.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in
  12  *    the documentation and/or other materials provided with the
  13  *    distribution.
  14  * 3. Neither the name of The DragonFly Project nor the names of its
  15  *    contributors may be used to endorse or promote products derived
  16  *    from this software without specific, prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  21  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  22  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  23  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  24  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  26  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  27  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  28  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #ifndef _NET_IFQ_VAR_H_
  33 #define _NET_IFQ_VAR_H_
  34
  35 #ifndef _KERNEL
  36 #error "This file should not be included by userland programs."
  37 #endif
  38
  39 #ifndef _SYS_SYSTM_H_
  40 #include <sys/systm.h>
  41 #endif
  42 #ifndef _SYS_THREAD2_H_
  43 #include <sys/thread2.h>
  44 #endif
  45 #ifndef _SYS_SERIALIZE_H_
  46 #include <sys/serialize.h>
  47 #endif
  48 #ifndef _SYS_MBUF_H_
  49 #include <sys/mbuf.h>
  50 #endif
  51 #ifndef _NET_IF_VAR_H_
  52 #include <net/if_var.h>
  53 #endif
  54 #ifndef _NET_ALTQ_IF_ALTQ_H_
  55 #include <net/altq/if_altq.h>
  56 #endif
  57
  58 #define ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq) \
  59         KASSERT(ifsq_get_ifp((ifsq)) == (ifp) && \
  60             ifsq_get_index((ifsq)) == ALTQ_SUBQ_INDEX_DEFAULT, \
  61             ("not ifp's default subqueue"));
  62
  63 struct ifaltq;
  64 struct ifaltq_subque;
  65
  66 /*
  67  * Subqueue watchdog
  68  */
  69 typedef void    (*ifsq_watchdog_t)(struct ifaltq_subque *);
  70
  71 struct ifsubq_watchdog {
  72         struct callout  wd_callout;
  73         int             wd_timer;
  74         struct ifaltq_subque *wd_subq;
  75         ifsq_watchdog_t wd_watchdog;
  76 };
  77
  78 /*
  79  * Support for "classic" ALTQ interfaces.
  80  */
  81 int             ifsq_classic_enqueue(struct ifaltq_subque *, struct mbuf *,
  82                     struct altq_pktattr *);
  83 struct mbuf     *ifsq_classic_dequeue(struct ifaltq_subque *, int);
  84 int             ifsq_classic_request(struct ifaltq_subque *, int, void *);
  85 void            ifq_set_classic(struct ifaltq *);
  86
  87 void            ifq_set_maxlen(struct ifaltq *, int);
  88 void            ifq_set_methods(struct ifaltq *, altq_mapsubq_t,
  89                     ifsq_enqueue_t, ifsq_dequeue_t, ifsq_request_t);
  90 int             ifq_mapsubq_default(struct ifaltq *, int);
  91 int             ifq_mapsubq_mask(struct ifaltq *, int);
  92 int             ifq_mapsubq_modulo(struct ifaltq *, int);
  93
  94 void            ifsq_devstart(struct ifaltq_subque *ifsq);
  95 void            ifsq_devstart_sched(struct ifaltq_subque *ifsq);
  96
  97 void            ifsq_watchdog_init(struct ifsubq_watchdog *,
  98                     struct ifaltq_subque *, ifsq_watchdog_t);
  99 void            ifsq_watchdog_start(struct ifsubq_watchdog *);
 100 void            ifsq_watchdog_stop(struct ifsubq_watchdog *);
 101
 102 /*
 103  * Dispatch a packet to an interface.
 104  */
 105 int             ifq_dispatch(struct ifnet *, struct mbuf *,
 106                     struct altq_pktattr *);
 107
 108 #ifdef ALTQ
 109
 110 static __inline int
 111 ifq_is_enabled(struct ifaltq *_ifq)
 112 {
 113         return(_ifq->altq_flags & ALTQF_ENABLED);
 114 }
 115
 116 static __inline int
 117 ifq_is_attached(struct ifaltq *_ifq)
 118 {
 119         return(_ifq->altq_disc != NULL);
 120 }
 121
 122 #else   /* !ALTQ */
 123
 124 static __inline int
 125 ifq_is_enabled(struct ifaltq *_ifq)
 126 {
 127         return(0);
 128 }
 129
 130 static __inline int
 131 ifq_is_attached(struct ifaltq *_ifq)
 132 {
 133         return(0);
 134 }
 135
 136 #endif  /* ALTQ */
 137
 138 static __inline int
 139 ifq_is_ready(struct ifaltq *_ifq)
 140 {
 141         return(_ifq->altq_flags & ALTQF_READY);
 142 }
 143
 144 static __inline void
 145 ifq_set_ready(struct ifaltq *_ifq)
 146 {
 147         _ifq->altq_flags |= ALTQF_READY;
 148 }
 149
 150 /*
 151  * Subqueue lock must be held
 152  */
 153 static __inline int
 154 ifsq_enqueue_locked(struct ifaltq_subque *_ifsq, struct mbuf *_m,
 155     struct altq_pktattr *_pa)
 156 {
 157 #ifdef ALTQ
 158         if (!ifq_is_enabled(_ifsq->ifsq_altq))
 159                 return ifsq_classic_enqueue(_ifsq, _m, _pa);
 160         else
 161 #endif
 162         return _ifsq->ifsq_enqueue(_ifsq, _m, _pa);
 163 }
 164
 165 static __inline int
 166 ifsq_enqueue(struct ifaltq_subque *_ifsq, struct mbuf *_m,
 167     struct altq_pktattr *_pa)
 168 {
 169         int _error;
 170
 171         ALTQ_SQ_LOCK(_ifsq);
 172         _error = ifsq_enqueue_locked(_ifsq, _m, _pa);
 173         ALTQ_SQ_UNLOCK(_ifsq);
 174         return _error;
 175 }
 176
 177 static __inline struct mbuf *
 178 ifsq_dequeue(struct ifaltq_subque *_ifsq)
 179 {
 180         struct mbuf *_m;
 181
 182         ALTQ_SQ_LOCK(_ifsq);
 183         if (_ifsq->ifsq_prepended != NULL) {
 184                 _m = _ifsq->ifsq_prepended;
 185                 _ifsq->ifsq_prepended = NULL;
 186                 ALTQ_SQ_CNTR_DEC(_ifsq, _m->m_pkthdr.len);
 187                 ALTQ_SQ_UNLOCK(_ifsq);
 188                 return _m;
 189         }
 190
 191 #ifdef ALTQ
 192         if (_ifsq->ifsq_altq->altq_tbr != NULL)
 193                 _m = tbr_dequeue(_ifsq, ALTDQ_REMOVE);
 194         else if (!ifq_is_enabled(_ifsq->ifsq_altq))
 195                 _m = ifsq_classic_dequeue(_ifsq, ALTDQ_REMOVE);
 196         else
 197 #endif
 198         _m = _ifsq->ifsq_dequeue(_ifsq, ALTDQ_REMOVE);
 199         ALTQ_SQ_UNLOCK(_ifsq);
 200         return _m;
 201 }
 202
 203 /*
 204  * Subqueue lock must be held
 205  */
 206 static __inline struct mbuf *
 207 ifsq_poll_locked(struct ifaltq_subque *_ifsq)
 208 {
 209         if (_ifsq->ifsq_prepended != NULL)
 210                 return _ifsq->ifsq_prepended;
 211
 212 #ifdef ALTQ
 213         if (_ifsq->ifsq_altq->altq_tbr != NULL)
 214                 return tbr_dequeue(_ifsq, ALTDQ_POLL);
 215         else if (!ifq_is_enabled(_ifsq->ifsq_altq))
 216                 return ifsq_classic_dequeue(_ifsq, ALTDQ_POLL);
 217         else
 218 #endif
 219         return _ifsq->ifsq_dequeue(_ifsq, ALTDQ_POLL);
 220 }
 221
 222 static __inline struct mbuf *
 223 ifsq_poll(struct ifaltq_subque *_ifsq)
 224 {
 225         struct mbuf *_m;
 226
 227         ALTQ_SQ_LOCK(_ifsq);
 228         _m = ifsq_poll_locked(_ifsq);
 229         ALTQ_SQ_UNLOCK(_ifsq);
 230         return _m;
 231 }
 232
 233 static __inline int
 234 ifsq_poll_pktlen(struct ifaltq_subque *_ifsq)
 235 {
 236         struct mbuf *_m;
 237         int _len = 0;
 238
 239         ALTQ_SQ_LOCK(_ifsq);
 240
 241         _m = ifsq_poll_locked(_ifsq);
 242         if (_m != NULL) {
 243                 M_ASSERTPKTHDR(_m);
 244                 _len = _m->m_pkthdr.len;
 245         }
 246
 247         ALTQ_SQ_UNLOCK(_ifsq);
 248
 249         return _len;
 250 }
 251
 252 /*
 253  * Subqueue lock must be held
 254  */
 255 static __inline void
 256 ifsq_purge_locked(struct ifaltq_subque *_ifsq)
 257 {
 258         if (_ifsq->ifsq_prepended != NULL) {
 259                 ALTQ_SQ_CNTR_DEC(_ifsq, _ifsq->ifsq_prepended->m_pkthdr.len);
 260                 m_freem(_ifsq->ifsq_prepended);
 261                 _ifsq->ifsq_prepended = NULL;
 262         }
 263
 264 #ifdef ALTQ
 265         if (!ifq_is_enabled(_ifsq->ifsq_altq))
 266                 ifsq_classic_request(_ifsq, ALTRQ_PURGE, NULL);
 267         else
 268 #endif
 269         _ifsq->ifsq_request(_ifsq, ALTRQ_PURGE, NULL);
 270 }
 271
 272 static __inline void
 273 ifsq_purge(struct ifaltq_subque *_ifsq)
 274 {
 275         ALTQ_SQ_LOCK(_ifsq);
 276         ifsq_purge_locked(_ifsq);
 277         ALTQ_SQ_UNLOCK(_ifsq);
 278 }
 279
 280 static __inline void
 281 ifq_lock_all(struct ifaltq *_ifq)
 282 {
 283         int _q;
 284
 285         for (_q = 0; _q < _ifq->altq_subq_cnt; ++_q)
 286                 ALTQ_SQ_LOCK(&_ifq->altq_subq[_q]);
 287 }
 288
 289 static __inline void
 290 ifq_unlock_all(struct ifaltq *_ifq)
 291 {
 292         int _q;
 293
 294         for (_q = _ifq->altq_subq_cnt - 1; _q >= 0; --_q)
 295                 ALTQ_SQ_UNLOCK(&_ifq->altq_subq[_q]);
 296 }
 297
 298 /*
 299  * All of the subqueue locks must be held
 300  */
 301 static __inline void
 302 ifq_purge_all_locked(struct ifaltq *_ifq)
 303 {
 304         int _q;
 305
 306         for (_q = 0; _q < _ifq->altq_subq_cnt; ++_q)
 307                 ifsq_purge_locked(&_ifq->altq_subq[_q]);
 308 }
 309
 310 static __inline void
 311 ifq_purge_all(struct ifaltq *_ifq)
 312 {
 313         ifq_lock_all(_ifq);
 314         ifq_purge_all_locked(_ifq);
 315         ifq_unlock_all(_ifq);
 316 }
 317
 318 static __inline void
 319 ifq_classify(struct ifaltq *_ifq, struct mbuf *_m, uint8_t _af,
 320     struct altq_pktattr *_pa)
 321 {
 322 #ifdef ALTQ
 323         if (ifq_is_enabled(_ifq)) {
 324                 _pa->pattr_af = _af;
 325                 _pa->pattr_hdr = mtod(_m, caddr_t);
 326                 if (ifq_is_enabled(_ifq) &&
 327                     (_ifq->altq_flags & ALTQF_CLASSIFY)) {
 328                         /* XXX default subqueue */
 329                         struct ifaltq_subque *_ifsq =
 330                             &_ifq->altq_subq[ALTQ_SUBQ_INDEX_DEFAULT];
 331
 332                         ALTQ_SQ_LOCK(_ifsq);
 333                         if (ifq_is_enabled(_ifq) &&
 334                             (_ifq->altq_flags & ALTQF_CLASSIFY))
 335                                 _ifq->altq_classify(_ifq, _m, _pa);
 336                         ALTQ_SQ_UNLOCK(_ifsq);
 337                 }
 338         }
 339 #endif
 340 }
 341
 342 static __inline void
 343 ifsq_prepend(struct ifaltq_subque *_ifsq, struct mbuf *_m)
 344 {
 345         ALTQ_SQ_LOCK(_ifsq);
 346         KASSERT(_ifsq->ifsq_prepended == NULL, ("pending prepended mbuf"));
 347         _ifsq->ifsq_prepended = _m;
 348         ALTQ_SQ_CNTR_INC(_ifsq, _m->m_pkthdr.len);
 349         ALTQ_SQ_UNLOCK(_ifsq);
 350 }
 351
 352 /*
 353  * Subqueue hardware serializer must be held
 354  */
 355 static __inline void
 356 ifsq_set_oactive(struct ifaltq_subque *_ifsq)
 357 {
 358         _ifsq->ifsq_hw_oactive = 1;
 359 }
 360
 361 /*
 362  * Subqueue hardware serializer must be held
 363  */
 364 static __inline void
 365 ifsq_clr_oactive(struct ifaltq_subque *_ifsq)
 366 {
 367         _ifsq->ifsq_hw_oactive = 0;
 368 }
 369
 370 /*
 371  * Subqueue hardware serializer must be held
 372  */
 373 static __inline int
 374 ifsq_is_oactive(const struct ifaltq_subque *_ifsq)
 375 {
 376         return _ifsq->ifsq_hw_oactive;
 377 }
 378
 379 /*
 380  * Hand a packet to the interface's default subqueue.
 381  *
 382  * The default subqueue hardware serializer must be held.  If the
 383  * subqueue hardware serializer is not held yet, ifq_dispatch()
 384  * should be used to get better performance.
 385  */
 386 static __inline int
 387 ifq_handoff(struct ifnet *_ifp, struct mbuf *_m, struct altq_pktattr *_pa)
 388 {
 389         struct ifaltq_subque *_ifsq;
 390         int _error;
 391         int _qid = ALTQ_SUBQ_INDEX_DEFAULT; /* XXX default subqueue */
 392
 393         _ifsq = &_ifp->if_snd.altq_subq[_qid];
 394
 395         ASSERT_ALTQ_SQ_SERIALIZED_HW(_ifsq);
 396         _error = ifsq_enqueue(_ifsq, _m, _pa);
 397         if (_error == 0) {
 398                 IFNET_STAT_INC(_ifp, obytes, _m->m_pkthdr.len);
 399                 if (_m->m_flags & M_MCAST)
 400                         IFNET_STAT_INC(_ifp, omcasts, 1);
 401                 if (!ifsq_is_oactive(_ifsq))
 402                         (*_ifp->if_start)(_ifp, _ifsq);
 403         } else {
 404                 IFNET_STAT_INC(_ifp, oqdrops, 1);
 405         }
 406         return(_error);
 407 }
 408
 409 static __inline int
 410 ifsq_is_empty(const struct ifaltq_subque *_ifsq)
 411 {
 412         return(_ifsq->ifsq_len == 0);
 413 }
 414
 415 /*
 416  * Subqueue lock must be held
 417  */
 418 static __inline int
 419 ifsq_data_ready(struct ifaltq_subque *_ifsq)
 420 {
 421 #ifdef ALTQ
 422         if (_ifsq->ifsq_altq->altq_tbr != NULL)
 423                 return (ifsq_poll_locked(_ifsq) != NULL);
 424         else
 425 #endif
 426         return !ifsq_is_empty(_ifsq);
 427 }
 428
 429 /*
 430  * Subqueue lock must be held
 431  */
 432 static __inline int
 433 ifsq_is_started(const struct ifaltq_subque *_ifsq)
 434 {
 435         return _ifsq->ifsq_started;
 436 }
 437
 438 /*
 439  * Subqueue lock must be held
 440  */
 441 static __inline void
 442 ifsq_set_started(struct ifaltq_subque *_ifsq)
 443 {
 444         _ifsq->ifsq_started = 1;
 445 }
 446
 447 /*
 448  * Subqueue lock must be held
 449  */
 450 static __inline void
 451 ifsq_clr_started(struct ifaltq_subque *_ifsq)
 452 {
 453         _ifsq->ifsq_started = 0;
 454 }
 455
 456 static __inline struct ifsubq_stage *
 457 ifsq_get_stage(struct ifaltq_subque *_ifsq, int _cpuid)
 458 {
 459         return &_ifsq->ifsq_stage[_cpuid];
 460 }
 461
 462 static __inline int
 463 ifsq_get_cpuid(const struct ifaltq_subque *_ifsq)
 464 {
 465         return _ifsq->ifsq_cpuid;
 466 }
 467
 468 static __inline void
 469 ifsq_set_cpuid(struct ifaltq_subque *_ifsq, int _cpuid)
 470 {
 471         KASSERT(_cpuid >= 0 && _cpuid < ncpus,
 472             ("invalid ifsq_cpuid %d", _cpuid));
 473         _ifsq->ifsq_cpuid = _cpuid;
 474 }
 475
 476 static __inline struct lwkt_msg *
 477 ifsq_get_ifstart_lmsg(struct ifaltq_subque *_ifsq, int _cpuid)
 478 {
 479         return &_ifsq->ifsq_ifstart_nmsg[_cpuid].lmsg;
 480 }
 481
 482 static __inline int
 483 ifsq_get_index(const struct ifaltq_subque *_ifsq)
 484 {
 485         return _ifsq->ifsq_index;
 486 }
 487
 488 static __inline void
 489 ifsq_set_priv(struct ifaltq_subque *_ifsq, void *_priv)
 490 {
 491         _ifsq->ifsq_hw_priv = _priv;
 492 }
 493
 494 static __inline void *
 495 ifsq_get_priv(const struct ifaltq_subque *_ifsq)
 496 {
 497         return _ifsq->ifsq_hw_priv;
 498 }
 499
 500 static __inline struct ifnet *
 501 ifsq_get_ifp(const struct ifaltq_subque *_ifsq)
 502 {
 503         return _ifsq->ifsq_ifp;
 504 }
 505
 506 static __inline void
 507 ifsq_set_hw_serialize(struct ifaltq_subque *_ifsq,
 508     struct lwkt_serialize *_hwslz)
 509 {
 510         KASSERT(_hwslz != NULL, ("NULL hw serialize"));
 511         KASSERT(_ifsq->ifsq_hw_serialize == NULL,
 512             ("hw serialize has been setup"));
 513         _ifsq->ifsq_hw_serialize = _hwslz;
 514 }
 515
 516 static __inline void
 517 ifsq_serialize_hw(struct ifaltq_subque *_ifsq)
 518 {
 519         lwkt_serialize_enter(_ifsq->ifsq_hw_serialize);
 520 }
 521
 522 static __inline void
 523 ifsq_deserialize_hw(struct ifaltq_subque *_ifsq)
 524 {
 525         lwkt_serialize_exit(_ifsq->ifsq_hw_serialize);
 526 }
 527
 528 static __inline int
 529 ifsq_tryserialize_hw(struct ifaltq_subque *_ifsq)
 530 {
 531         return lwkt_serialize_try(_ifsq->ifsq_hw_serialize);
 532 }
 533
 534 static __inline struct ifaltq_subque *
 535 ifq_get_subq_default(const struct ifaltq *_ifq)
 536 {
 537         return &_ifq->altq_subq[ALTQ_SUBQ_INDEX_DEFAULT];
 538 }
 539
 540 static __inline struct ifaltq_subque *
 541 ifq_get_subq(const struct ifaltq *_ifq, int _idx)
 542 {
 543         KASSERT(_idx >= 0 && _idx < _ifq->altq_subq_cnt,
 544             ("invalid qid %d", _idx));
 545         return &_ifq->altq_subq[_idx];
 546 }
 547
 548 static __inline struct ifaltq_subque *
 549 ifq_map_subq(struct ifaltq *_ifq, int _cpuid)
 550 {
 551         int _idx = _ifq->altq_mapsubq(_ifq, _cpuid);
 552         return ifq_get_subq(_ifq, _idx);
 553 }
 554
 555 static __inline void
 556 ifq_set_subq_cnt(struct ifaltq *_ifq, int _cnt)
 557 {
 558         _ifq->altq_subq_cnt = _cnt;
 559 }
 560
 561 static __inline void
 562 ifq_set_subq_mask(struct ifaltq *_ifq, uint32_t _mask)
 563 {
 564
 565         KASSERT(((_mask + 1) & _mask) == 0, ("invalid mask %08x", _mask));
 566         _ifq->altq_subq_mappriv = _mask;
 567 }
 568
 569 static __inline void
 570 ifq_set_subq_divisor(struct ifaltq *_ifq, uint32_t _divisor)
 571 {
 572
 573         KASSERT(_divisor > 0, ("invalid divisor %u", _divisor));
 574         KASSERT(_divisor <= _ifq->altq_subq_cnt,
 575             ("invalid divisor %u, max %d", _divisor, _ifq->altq_subq_cnt));
 576         _ifq->altq_subq_mappriv = _divisor;
 577 }
 578
 579 /* COMPAT */
 580 static __inline int
 581 ifq_is_oactive(const struct ifaltq *_ifq)
 582 {
 583         return ifsq_is_oactive(ifq_get_subq_default(_ifq));
 584 }
 585
 586 /* COMPAT */
 587 static __inline void
 588 ifq_set_oactive(struct ifaltq *_ifq)
 589 {
 590         ifsq_set_oactive(ifq_get_subq_default(_ifq));
 591 }
 592
 593 /* COMPAT */
 594 static __inline void
 595 ifq_clr_oactive(struct ifaltq *_ifq)
 596 {
 597         ifsq_clr_oactive(ifq_get_subq_default(_ifq));
 598 }
 599
 600 /* COMPAT */
 601 static __inline int
 602 ifq_is_empty(struct ifaltq *_ifq)
 603 {
 604         return ifsq_is_empty(ifq_get_subq_default(_ifq));
 605 }
 606
 607 /* COMPAT */
 608 static __inline void
 609 ifq_purge(struct ifaltq *_ifq)
 610 {
 611         ifsq_purge(ifq_get_subq_default(_ifq));
 612 }
 613
 614 /* COMPAT */
 615 static __inline struct mbuf *
 616 ifq_dequeue(struct ifaltq *_ifq)
 617 {
 618         return ifsq_dequeue(ifq_get_subq_default(_ifq));
 619 }
 620
 621 /* COMPAT */
 622 static __inline void
 623 ifq_prepend(struct ifaltq *_ifq, struct mbuf *_m)
 624 {
 625         ifsq_prepend(ifq_get_subq_default(_ifq), _m);
 626 }
 627
 628 /* COMPAT */
 629 static __inline void
 630 ifq_set_cpuid(struct ifaltq *_ifq, int _cpuid)
 631 {
 632         KASSERT(_ifq->altq_subq_cnt == 1,
 633             ("invalid subqueue count %d", _ifq->altq_subq_cnt));
 634         ifsq_set_cpuid(ifq_get_subq_default(_ifq), _cpuid);
 635 }
 636
 637 /* COMPAT */
 638 static __inline void
 639 ifq_set_hw_serialize(struct ifaltq *_ifq, struct lwkt_serialize *_hwslz)
 640 {
 641         KASSERT(_ifq->altq_subq_cnt == 1,
 642             ("invalid subqueue count %d", _ifq->altq_subq_cnt));
 643         ifsq_set_hw_serialize(ifq_get_subq_default(_ifq), _hwslz);
 644 }
 645
 646 #endif  /* _NET_IFQ_VAR_H_ */