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_SERIALIZE_H_
  43 #include <sys/serialize.h>
  44 #endif
  45 #ifndef _SYS_MBUF_H_
  46 #include <sys/mbuf.h>
  47 #endif
  48 #ifndef _NET_IF_VAR_H_
  49 #include <net/if_var.h>
  50 #endif
  51 #ifndef _NET_ALTQ_IF_ALTQ_H_
  52 #include <net/altq/if_altq.h>
  53 #endif
  54
  55 #define ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq) \
  56         KASSERT(ifsq_get_ifp((ifsq)) == (ifp) && \
  57             ifsq_get_index((ifsq)) == ALTQ_SUBQ_INDEX_DEFAULT, \
  58             ("not ifp's default subqueue"));
  59
  60 struct ifaltq;
  61 struct ifaltq_subque;
  62
  63 /*
  64  * Subqueue watchdog
  65  */
  66 typedef void    (*ifsq_watchdog_t)(struct ifaltq_subque *);
  67
  68 struct ifsubq_watchdog {
  69         struct callout  wd_callout;
  70         int             wd_timer;
  71         int             wd_flags;
  72         struct ifaltq_subque *wd_subq;
  73         ifsq_watchdog_t wd_watchdog;
  74 };
  75
  76 #define IF_WDOG_ALLTICKS        0x00000001
  77 #define IF_WDOG_LASTTICK        0x00000002
  78
  79 /*
  80  * Support for "classic" ALTQ interfaces.
  81  */
  82 int             ifsq_classic_enqueue(struct ifaltq_subque *, struct mbuf *,
  83                     struct altq_pktattr *);
  84 struct mbuf     *ifsq_classic_dequeue(struct ifaltq_subque *, int);
  85 int             ifsq_classic_request(struct ifaltq_subque *, int, void *);
  86 void            ifq_set_classic(struct ifaltq *);
  87
  88 void            ifq_set_maxlen(struct ifaltq *, int);
  89 void            ifq_set_methods(struct ifaltq *, altq_mapsubq_t,
  90                     ifsq_enqueue_t, ifsq_dequeue_t, ifsq_request_t);
  91 int             ifq_mapsubq_default(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, int);
  99 void            ifsq_watchdog_start(struct ifsubq_watchdog *);
 100 void            ifsq_watchdog_stop(struct ifsubq_watchdog *);
 101 void            ifsq_watchdog_set_count(struct ifsubq_watchdog *, int);
 102
 103 /*
 104  * Dispatch a packet to an interface.
 105  */
 106 int             ifq_dispatch(struct ifnet *, struct mbuf *,
 107                     struct altq_pktattr *);
 108
 109 #ifdef ALTQ
 110
 111 static __inline int
 112 ifq_is_enabled(struct ifaltq *_ifq)
 113 {
 114         return(_ifq->altq_flags & ALTQF_ENABLED);
 115 }
 116
 117 static __inline int
 118 ifq_is_attached(struct ifaltq *_ifq)
 119 {
 120         return(_ifq->altq_disc != NULL);
 121 }
 122
 123 #else   /* !ALTQ */
 124
 125 static __inline int
 126 ifq_is_enabled(struct ifaltq *_ifq)
 127 {
 128         return(0);
 129 }
 130
 131 static __inline int
 132 ifq_is_attached(struct ifaltq *_ifq)
 133 {
 134         return(0);
 135 }
 136
 137 #endif  /* ALTQ */
 138
 139 static __inline int
 140 ifq_is_ready(struct ifaltq *_ifq)
 141 {
 142         return(_ifq->altq_flags & ALTQF_READY);
 143 }
 144
 145 static __inline void
 146 ifq_set_ready(struct ifaltq *_ifq)
 147 {
 148         _ifq->altq_flags |= ALTQF_READY;
 149 }
 150
 151 /*
 152  * Subqueue lock must be held
 153  */
 154 static __inline int
 155 ifsq_enqueue_locked(struct ifaltq_subque *_ifsq, struct mbuf *_m,
 156     struct altq_pktattr *_pa)
 157 {
 158 #ifdef ALTQ
 159         if (!ifq_is_enabled(_ifsq->ifsq_altq))
 160                 return ifsq_classic_enqueue(_ifsq, _m, _pa);
 161         else
 162 #endif
 163         return _ifsq->ifsq_enqueue(_ifsq, _m, _pa);
 164 }
 165
 166 static __inline int
 167 ifsq_enqueue(struct ifaltq_subque *_ifsq, struct mbuf *_m,
 168     struct altq_pktattr *_pa)
 169 {
 170         int _error;
 171
 172         ALTQ_SQ_LOCK(_ifsq);
 173         _error = ifsq_enqueue_locked(_ifsq, _m, _pa);
 174         ALTQ_SQ_UNLOCK(_ifsq);
 175         return _error;
 176 }
 177
 178 static __inline struct mbuf *
 179 ifsq_dequeue(struct ifaltq_subque *_ifsq)
 180 {
 181         struct mbuf *_m;
 182
 183         ALTQ_SQ_LOCK(_ifsq);
 184         if (_ifsq->ifsq_prepended != NULL) {
 185                 _m = _ifsq->ifsq_prepended;
 186                 _ifsq->ifsq_prepended = NULL;
 187                 ALTQ_SQ_CNTR_DEC(_ifsq, _m->m_pkthdr.len);
 188                 ALTQ_SQ_UNLOCK(_ifsq);
 189                 return _m;
 190         }
 191
 192 #ifdef ALTQ
 193         if (_ifsq->ifsq_altq->altq_tbr != NULL)
 194                 _m = tbr_dequeue(_ifsq, ALTDQ_REMOVE);
 195         else if (!ifq_is_enabled(_ifsq->ifsq_altq))
 196                 _m = ifsq_classic_dequeue(_ifsq, ALTDQ_REMOVE);
 197         else
 198 #endif
 199         _m = _ifsq->ifsq_dequeue(_ifsq, ALTDQ_REMOVE);
 200         ALTQ_SQ_UNLOCK(_ifsq);
 201         return _m;
 202 }
 203
 204 /*
 205  * Subqueue lock must be held
 206  */
 207 static __inline struct mbuf *
 208 ifsq_poll_locked(struct ifaltq_subque *_ifsq)
 209 {
 210         if (_ifsq->ifsq_prepended != NULL)
 211                 return _ifsq->ifsq_prepended;
 212
 213 #ifdef ALTQ
 214         if (_ifsq->ifsq_altq->altq_tbr != NULL)
 215                 return tbr_dequeue(_ifsq, ALTDQ_POLL);
 216         else if (!ifq_is_enabled(_ifsq->ifsq_altq))
 217                 return ifsq_classic_dequeue(_ifsq, ALTDQ_POLL);
 218         else
 219 #endif
 220         return _ifsq->ifsq_dequeue(_ifsq, ALTDQ_POLL);
 221 }
 222
 223 static __inline struct mbuf *
 224 ifsq_poll(struct ifaltq_subque *_ifsq)
 225 {
 226         struct mbuf *_m;
 227
 228         ALTQ_SQ_LOCK(_ifsq);
 229         _m = ifsq_poll_locked(_ifsq);
 230         ALTQ_SQ_UNLOCK(_ifsq);
 231         return _m;
 232 }
 233
 234 static __inline int
 235 ifsq_poll_pktlen(struct ifaltq_subque *_ifsq)
 236 {
 237         struct mbuf *_m;
 238         int _len = 0;
 239
 240         ALTQ_SQ_LOCK(_ifsq);
 241
 242         _m = ifsq_poll_locked(_ifsq);
 243         if (_m != NULL) {
 244                 M_ASSERTPKTHDR(_m);
 245                 _len = _m->m_pkthdr.len;
 246         }
 247
 248         ALTQ_SQ_UNLOCK(_ifsq);
 249
 250         return _len;
 251 }
 252
 253 /*
 254  * Subqueue lock must be held
 255  */
 256 static __inline void
 257 ifsq_purge_locked(struct ifaltq_subque *_ifsq)
 258 {
 259         if (_ifsq->ifsq_prepended != NULL) {
 260                 ALTQ_SQ_CNTR_DEC(_ifsq, _ifsq->ifsq_prepended->m_pkthdr.len);
 261                 m_freem(_ifsq->ifsq_prepended);
 262                 _ifsq->ifsq_prepended = NULL;
 263         }
 264
 265 #ifdef ALTQ
 266         if (!ifq_is_enabled(_ifsq->ifsq_altq))
 267                 ifsq_classic_request(_ifsq, ALTRQ_PURGE, NULL);
 268         else
 269 #endif
 270         _ifsq->ifsq_request(_ifsq, ALTRQ_PURGE, NULL);
 271 }
 272
 273 static __inline void
 274 ifsq_purge(struct ifaltq_subque *_ifsq)
 275 {
 276         ALTQ_SQ_LOCK(_ifsq);
 277         ifsq_purge_locked(_ifsq);
 278         ALTQ_SQ_UNLOCK(_ifsq);
 279 }
 280
 281 static __inline void
 282 ifq_lock_all(struct ifaltq *_ifq)
 283 {
 284         int _q;
 285
 286         for (_q = 0; _q < _ifq->altq_subq_cnt; ++_q)
 287                 ALTQ_SQ_LOCK(&_ifq->altq_subq[_q]);
 288 }
 289
 290 static __inline void
 291 ifq_unlock_all(struct ifaltq *_ifq)
 292 {
 293         int _q;
 294
 295         for (_q = _ifq->altq_subq_cnt - 1; _q >= 0; --_q)
 296                 ALTQ_SQ_UNLOCK(&_ifq->altq_subq[_q]);
 297 }
 298
 299 /*
 300  * All of the subqueue locks must be held
 301  */
 302 static __inline void
 303 ifq_purge_all_locked(struct ifaltq *_ifq)
 304 {
 305         int _q;
 306
 307         for (_q = 0; _q < _ifq->altq_subq_cnt; ++_q)
 308                 ifsq_purge_locked(&_ifq->altq_subq[_q]);
 309 }
 310
 311 static __inline void
 312 ifq_purge_all(struct ifaltq *_ifq)
 313 {
 314         ifq_lock_all(_ifq);
 315         ifq_purge_all_locked(_ifq);
 316         ifq_unlock_all(_ifq);
 317 }
 318
 319 static __inline void
 320 ifq_classify(struct ifaltq *_ifq, struct mbuf *_m, uint8_t _af,
 321     struct altq_pktattr *_pa)
 322 {
 323 #ifdef ALTQ
 324         if (ifq_is_enabled(_ifq)) {
 325                 _pa->pattr_af = _af;
 326                 _pa->pattr_hdr = mtod(_m, caddr_t);
 327                 if (ifq_is_enabled(_ifq) &&
 328                     (_ifq->altq_flags & ALTQF_CLASSIFY)) {
 329                         /* XXX default subqueue */
 330                         struct ifaltq_subque *_ifsq =
 331                             &_ifq->altq_subq[ALTQ_SUBQ_INDEX_DEFAULT];
 332
 333                         ALTQ_SQ_LOCK(_ifsq);
 334                         if (ifq_is_enabled(_ifq) &&
 335                             (_ifq->altq_flags & ALTQF_CLASSIFY))
 336                                 _ifq->altq_classify(_ifq, _m, _pa);
 337                         ALTQ_SQ_UNLOCK(_ifsq);
 338                 }
 339         }
 340 #endif
 341 }
 342
 343 static __inline void
 344 ifsq_prepend(struct ifaltq_subque *_ifsq, struct mbuf *_m)
 345 {
 346         ALTQ_SQ_LOCK(_ifsq);
 347         KASSERT(_ifsq->ifsq_prepended == NULL, ("pending prepended mbuf"));
 348         _ifsq->ifsq_prepended = _m;
 349         ALTQ_SQ_CNTR_INC(_ifsq, _m->m_pkthdr.len);
 350         ALTQ_SQ_UNLOCK(_ifsq);
 351 }
 352
 353 /*
 354  * Subqueue hardware serializer must be held
 355  */
 356 static __inline void
 357 ifsq_set_oactive(struct ifaltq_subque *_ifsq)
 358 {
 359         _ifsq->ifsq_hw_oactive = 1;
 360 }
 361
 362 /*
 363  * Subqueue hardware serializer must be held
 364  */
 365 static __inline void
 366 ifsq_clr_oactive(struct ifaltq_subque *_ifsq)
 367 {
 368         _ifsq->ifsq_hw_oactive = 0;
 369 }
 370
 371 /*
 372  * Subqueue hardware serializer must be held
 373  */
 374 static __inline int
 375 ifsq_is_oactive(const struct ifaltq_subque *_ifsq)
 376 {
 377         return _ifsq->ifsq_hw_oactive;
 378 }
 379
 380 /*
 381  * Hand a packet to the interface's default subqueue.
 382  *
 383  * The default subqueue hardware serializer must be held.  If the
 384  * subqueue hardware serializer is not held yet, ifq_dispatch()
 385  * should be used to get better performance.
 386  */
 387 static __inline int
 388 ifq_handoff(struct ifnet *_ifp, struct mbuf *_m, struct altq_pktattr *_pa)
 389 {
 390         struct ifaltq_subque *_ifsq;
 391         int _error;
 392         int _qid = ALTQ_SUBQ_INDEX_DEFAULT; /* XXX default subqueue */
 393
 394         _ifsq = &_ifp->if_snd.altq_subq[_qid];
 395
 396         ASSERT_ALTQ_SQ_SERIALIZED_HW(_ifsq);
 397         _error = ifsq_enqueue(_ifsq, _m, _pa);
 398         if (_error == 0) {
 399                 IFNET_STAT_INC(_ifp, obytes, _m->m_pkthdr.len);
 400                 if (_m->m_flags & M_MCAST)
 401                         IFNET_STAT_INC(_ifp, omcasts, 1);
 402                 if (!ifsq_is_oactive(_ifsq))
 403                         (*_ifp->if_start)(_ifp, _ifsq);
 404         } else {
 405                 IFNET_STAT_INC(_ifp, oqdrops, 1);
 406         }
 407         return(_error);
 408 }
 409
 410 static __inline int
 411 ifsq_is_empty(const struct ifaltq_subque *_ifsq)
 412 {
 413         return(_ifsq->ifsq_len == 0);
 414 }
 415
 416 /*
 417  * Subqueue lock must be held
 418  */
 419 static __inline int
 420 ifsq_data_ready(struct ifaltq_subque *_ifsq)
 421 {
 422 #ifdef ALTQ
 423         if (_ifsq->ifsq_altq->altq_tbr != NULL)
 424                 return (ifsq_poll_locked(_ifsq) != NULL);
 425         else
 426 #endif
 427         return !ifsq_is_empty(_ifsq);
 428 }
 429
 430 /*
 431  * Subqueue lock must be held
 432  */
 433 static __inline int
 434 ifsq_is_started(const struct ifaltq_subque *_ifsq)
 435 {
 436         return _ifsq->ifsq_started;
 437 }
 438
 439 /*
 440  * Subqueue lock must be held
 441  */
 442 static __inline void
 443 ifsq_set_started(struct ifaltq_subque *_ifsq)
 444 {
 445         _ifsq->ifsq_started = 1;
 446 }
 447
 448 /*
 449  * Subqueue lock must be held
 450  */
 451 static __inline void
 452 ifsq_clr_started(struct ifaltq_subque *_ifsq)
 453 {
 454         _ifsq->ifsq_started = 0;
 455 }
 456
 457 static __inline struct ifsubq_stage *
 458 ifsq_get_stage(struct ifaltq_subque *_ifsq, int _cpuid)
 459 {
 460         return &_ifsq->ifsq_stage[_cpuid];
 461 }
 462
 463 static __inline int
 464 ifsq_get_cpuid(const struct ifaltq_subque *_ifsq)
 465 {
 466         return _ifsq->ifsq_cpuid;
 467 }
 468
 469 static __inline void
 470 ifsq_set_cpuid(struct ifaltq_subque *_ifsq, int _cpuid)
 471 {
 472         KASSERT(_cpuid >= 0 && _cpuid < ncpus,
 473             ("invalid ifsq_cpuid %d", _cpuid));
 474         _ifsq->ifsq_cpuid = _cpuid;
 475 }
 476
 477 static __inline struct lwkt_msg *
 478 ifsq_get_ifstart_lmsg(struct ifaltq_subque *_ifsq, int _cpuid)
 479 {
 480         return &_ifsq->ifsq_ifstart_nmsg[_cpuid].lmsg;
 481 }
 482
 483 static __inline int
 484 ifsq_get_index(const struct ifaltq_subque *_ifsq)
 485 {
 486         return _ifsq->ifsq_index;
 487 }
 488
 489 static __inline void
 490 ifsq_set_priv(struct ifaltq_subque *_ifsq, void *_priv)
 491 {
 492         _ifsq->ifsq_hw_priv = _priv;
 493 }
 494
 495 static __inline void *
 496 ifsq_get_priv(const struct ifaltq_subque *_ifsq)
 497 {
 498         return _ifsq->ifsq_hw_priv;
 499 }
 500
 501 static __inline struct ifnet *
 502 ifsq_get_ifp(const struct ifaltq_subque *_ifsq)
 503 {
 504         return _ifsq->ifsq_ifp;
 505 }
 506
 507 static __inline void
 508 ifsq_set_hw_serialize(struct ifaltq_subque *_ifsq,
 509     struct lwkt_serialize *_hwslz)
 510 {
 511         KASSERT(_hwslz != NULL, ("NULL hw serialize"));
 512         KASSERT(_ifsq->ifsq_hw_serialize == NULL,
 513             ("hw serialize has been setup"));
 514         _ifsq->ifsq_hw_serialize = _hwslz;
 515 }
 516
 517 static __inline void
 518 ifsq_serialize_hw(struct ifaltq_subque *_ifsq)
 519 {
 520         lwkt_serialize_enter(_ifsq->ifsq_hw_serialize);
 521 }
 522
 523 static __inline void
 524 ifsq_deserialize_hw(struct ifaltq_subque *_ifsq)
 525 {
 526         lwkt_serialize_exit(_ifsq->ifsq_hw_serialize);
 527 }
 528
 529 static __inline int
 530 ifsq_tryserialize_hw(struct ifaltq_subque *_ifsq)
 531 {
 532         return lwkt_serialize_try(_ifsq->ifsq_hw_serialize);
 533 }
 534
 535 static __inline struct ifaltq_subque *
 536 ifq_get_subq_default(const struct ifaltq *_ifq)
 537 {
 538         return &_ifq->altq_subq[ALTQ_SUBQ_INDEX_DEFAULT];
 539 }
 540
 541 static __inline struct ifaltq_subque *
 542 ifq_get_subq(const struct ifaltq *_ifq, int _idx)
 543 {
 544         KASSERT(_idx >= 0 && _idx < _ifq->altq_subq_cnt,
 545             ("invalid qid %d", _idx));
 546         return &_ifq->altq_subq[_idx];
 547 }
 548
 549 static __inline struct ifaltq_subque *
 550 ifq_map_subq(struct ifaltq *_ifq, int _cpuid)
 551 {
 552         int _idx = _ifq->altq_mapsubq(_ifq, _cpuid);
 553         return ifq_get_subq(_ifq, _idx);
 554 }
 555
 556 static __inline void
 557 ifq_set_subq_cnt(struct ifaltq *_ifq, int _cnt)
 558 {
 559         _ifq->altq_subq_cnt = _cnt;
 560 }
 561
 562 static __inline void
 563 ifq_set_subq_divisor(struct ifaltq *_ifq, uint32_t _divisor)
 564 {
 565
 566         KASSERT(_divisor > 0, ("invalid divisor %u", _divisor));
 567         KASSERT(_divisor <= _ifq->altq_subq_cnt,
 568             ("invalid divisor %u, max %d", _divisor, _ifq->altq_subq_cnt));
 569         _ifq->altq_subq_mappriv = _divisor;
 570 }
 571
 572 /* COMPAT */
 573 static __inline int
 574 ifq_is_oactive(const struct ifaltq *_ifq)
 575 {
 576         return ifsq_is_oactive(ifq_get_subq_default(_ifq));
 577 }
 578
 579 /* COMPAT */
 580 static __inline void
 581 ifq_set_oactive(struct ifaltq *_ifq)
 582 {
 583         ifsq_set_oactive(ifq_get_subq_default(_ifq));
 584 }
 585
 586 /* COMPAT */
 587 static __inline void
 588 ifq_clr_oactive(struct ifaltq *_ifq)
 589 {
 590         ifsq_clr_oactive(ifq_get_subq_default(_ifq));
 591 }
 592
 593 /* COMPAT */
 594 static __inline int
 595 ifq_is_empty(struct ifaltq *_ifq)
 596 {
 597         return ifsq_is_empty(ifq_get_subq_default(_ifq));
 598 }
 599
 600 /* COMPAT */
 601 static __inline void
 602 ifq_purge(struct ifaltq *_ifq)
 603 {
 604         ifsq_purge(ifq_get_subq_default(_ifq));
 605 }
 606
 607 /* COMPAT */
 608 static __inline struct mbuf *
 609 ifq_dequeue(struct ifaltq *_ifq)
 610 {
 611         return ifsq_dequeue(ifq_get_subq_default(_ifq));
 612 }
 613
 614 /* COMPAT */
 615 static __inline void
 616 ifq_prepend(struct ifaltq *_ifq, struct mbuf *_m)
 617 {
 618         ifsq_prepend(ifq_get_subq_default(_ifq), _m);
 619 }
 620
 621 /* COMPAT */
 622 static __inline void
 623 ifq_set_cpuid(struct ifaltq *_ifq, int _cpuid)
 624 {
 625         KASSERT(_ifq->altq_subq_cnt == 1,
 626             ("invalid subqueue count %d", _ifq->altq_subq_cnt));
 627         ifsq_set_cpuid(ifq_get_subq_default(_ifq), _cpuid);
 628 }
 629
 630 /* COMPAT */
 631 static __inline void
 632 ifq_set_hw_serialize(struct ifaltq *_ifq, struct lwkt_serialize *_hwslz)
 633 {
 634         KASSERT(_ifq->altq_subq_cnt == 1,
 635             ("invalid subqueue count %d", _ifq->altq_subq_cnt));
 636         ifsq_set_hw_serialize(ifq_get_subq_default(_ifq), _hwslz);
 637 }
 638
 639 #endif  /* _NET_IFQ_VAR_H_ */