altq_fifoq.c revision 1.2.2.2
1 1.2.2.2 bouyer /* $NetBSD: altq_fifoq.c,v 1.2.2.2 2001/01/05 17:39:36 bouyer Exp $ */ 2 1.2.2.2 bouyer /* $KAME: altq_fifoq.c,v 1.7 2000/12/14 08:12:45 thorpej Exp $ */ 3 1.2.2.2 bouyer 4 1.2.2.2 bouyer /* 5 1.2.2.2 bouyer * Copyright (C) 1997-2000 6 1.2.2.2 bouyer * Sony Computer Science Laboratories Inc. All rights reserved. 7 1.2.2.2 bouyer * 8 1.2.2.2 bouyer * Redistribution and use in source and binary forms, with or without 9 1.2.2.2 bouyer * modification, are permitted provided that the following conditions 10 1.2.2.2 bouyer * are met: 11 1.2.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 12 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer. 13 1.2.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 14 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 15 1.2.2.2 bouyer * documentation and/or other materials provided with the distribution. 16 1.2.2.2 bouyer * 17 1.2.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND 18 1.2.2.2 bouyer * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 1.2.2.2 bouyer * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 1.2.2.2 bouyer * ARE DISCLAIMED. IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE 21 1.2.2.2 bouyer * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 1.2.2.2 bouyer * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 1.2.2.2 bouyer * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 1.2.2.2 bouyer * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 1.2.2.2 bouyer * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 1.2.2.2 bouyer * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 1.2.2.2 bouyer * SUCH DAMAGE. 28 1.2.2.2 bouyer */ 29 1.2.2.2 bouyer 30 1.2.2.2 bouyer #if defined(__FreeBSD__) || defined(__NetBSD__) 31 1.2.2.2 bouyer #include "opt_altq.h" 32 1.2.2.2 bouyer #endif /* __FreeBSD__ || __NetBSD__ */ 33 1.2.2.2 bouyer #ifdef ALTQ_FIFOQ /* fifoq is enabled by ALTQ_FIFOQ option in opt_altq.h */ 34 1.2.2.2 bouyer 35 1.2.2.2 bouyer /* 36 1.2.2.2 bouyer * FIFOQ is an altq sample implementation. There will be little 37 1.2.2.2 bouyer * need to use FIFOQ as an alternative queueing scheme. 38 1.2.2.2 bouyer * But this code is provided as a template for those who want to 39 1.2.2.2 bouyer * write their own queueing schemes. 40 1.2.2.2 bouyer */ 41 1.2.2.2 bouyer 42 1.2.2.2 bouyer #include <sys/param.h> 43 1.2.2.2 bouyer #include <sys/malloc.h> 44 1.2.2.2 bouyer #include <sys/mbuf.h> 45 1.2.2.2 bouyer #include <sys/socket.h> 46 1.2.2.2 bouyer #include <sys/sockio.h> 47 1.2.2.2 bouyer #include <sys/systm.h> 48 1.2.2.2 bouyer #include <sys/proc.h> 49 1.2.2.2 bouyer #include <sys/errno.h> 50 1.2.2.2 bouyer #include <sys/kernel.h> 51 1.2.2.2 bouyer 52 1.2.2.2 bouyer #include <net/if.h> 53 1.2.2.2 bouyer #include <net/if_types.h> 54 1.2.2.2 bouyer #include <netinet/in.h> 55 1.2.2.2 bouyer 56 1.2.2.2 bouyer #include <altq/altq.h> 57 1.2.2.2 bouyer #include <altq/altq_conf.h> 58 1.2.2.2 bouyer #include <altq/altq_fifoq.h> 59 1.2.2.2 bouyer 60 1.2.2.2 bouyer #define FIFOQ_STATS /* collect statistics */ 61 1.2.2.2 bouyer 62 1.2.2.2 bouyer /* fifoq_list keeps all fifoq_state_t's allocated. */ 63 1.2.2.2 bouyer static fifoq_state_t *fifoq_list = NULL; 64 1.2.2.2 bouyer 65 1.2.2.2 bouyer /* internal function prototypes */ 66 1.2.2.2 bouyer static int fifoq_enqueue __P((struct ifaltq *, struct mbuf *, 67 1.2.2.2 bouyer struct altq_pktattr *)); 68 1.2.2.2 bouyer static struct mbuf *fifoq_dequeue __P((struct ifaltq *, int)); 69 1.2.2.2 bouyer static int fifoq_detach __P((fifoq_state_t *)); 70 1.2.2.2 bouyer static int fifoq_request __P((struct ifaltq *, int, void *)); 71 1.2.2.2 bouyer static void fifoq_purge __P((fifoq_state_t *)); 72 1.2.2.2 bouyer 73 1.2.2.2 bouyer /* 74 1.2.2.2 bouyer * fifoq device interface 75 1.2.2.2 bouyer */ 76 1.2.2.2 bouyer altqdev_decl(fifoq); 77 1.2.2.2 bouyer 78 1.2.2.2 bouyer int 79 1.2.2.2 bouyer fifoqopen(dev, flag, fmt, p) 80 1.2.2.2 bouyer dev_t dev; 81 1.2.2.2 bouyer int flag, fmt; 82 1.2.2.2 bouyer struct proc *p; 83 1.2.2.2 bouyer { 84 1.2.2.2 bouyer /* everything will be done when the queueing scheme is attached. */ 85 1.2.2.2 bouyer return 0; 86 1.2.2.2 bouyer } 87 1.2.2.2 bouyer 88 1.2.2.2 bouyer /* 89 1.2.2.2 bouyer * there are 2 ways to act on close. 90 1.2.2.2 bouyer * detach-all-on-close: 91 1.2.2.2 bouyer * use for the daemon style approach. if the daemon dies, all the 92 1.2.2.2 bouyer * resource will be released. 93 1.2.2.2 bouyer * no-action-on-close: 94 1.2.2.2 bouyer * use for the command style approach. (e.g. fifoq on/off) 95 1.2.2.2 bouyer * 96 1.2.2.2 bouyer * note: close is called not on every close but when the last reference 97 1.2.2.2 bouyer * is removed (only once with multiple simultaneous references.) 98 1.2.2.2 bouyer */ 99 1.2.2.2 bouyer int 100 1.2.2.2 bouyer fifoqclose(dev, flag, fmt, p) 101 1.2.2.2 bouyer dev_t dev; 102 1.2.2.2 bouyer int flag, fmt; 103 1.2.2.2 bouyer struct proc *p; 104 1.2.2.2 bouyer { 105 1.2.2.2 bouyer fifoq_state_t *q; 106 1.2.2.2 bouyer int err, error = 0; 107 1.2.2.2 bouyer 108 1.2.2.2 bouyer while ((q = fifoq_list) != NULL) { 109 1.2.2.2 bouyer /* destroy all */ 110 1.2.2.2 bouyer err = fifoq_detach(q); 111 1.2.2.2 bouyer if (err != 0 && error == 0) 112 1.2.2.2 bouyer error = err; 113 1.2.2.2 bouyer } 114 1.2.2.2 bouyer 115 1.2.2.2 bouyer return error; 116 1.2.2.2 bouyer } 117 1.2.2.2 bouyer 118 1.2.2.2 bouyer int 119 1.2.2.2 bouyer fifoqioctl(dev, cmd, addr, flag, p) 120 1.2.2.2 bouyer dev_t dev; 121 1.2.2.2 bouyer ioctlcmd_t cmd; 122 1.2.2.2 bouyer caddr_t addr; 123 1.2.2.2 bouyer int flag; 124 1.2.2.2 bouyer struct proc *p; 125 1.2.2.2 bouyer { 126 1.2.2.2 bouyer fifoq_state_t *q; 127 1.2.2.2 bouyer struct fifoq_interface *ifacep; 128 1.2.2.2 bouyer struct ifnet *ifp; 129 1.2.2.2 bouyer int error = 0; 130 1.2.2.2 bouyer 131 1.2.2.2 bouyer /* check super-user privilege */ 132 1.2.2.2 bouyer switch (cmd) { 133 1.2.2.2 bouyer case FIFOQ_GETSTATS: 134 1.2.2.2 bouyer break; 135 1.2.2.2 bouyer default: 136 1.2.2.2 bouyer #if (__FreeBSD_version > 400000) 137 1.2.2.2 bouyer if ((error = suser(p)) != 0) 138 1.2.2.2 bouyer return (error); 139 1.2.2.2 bouyer #else 140 1.2.2.2 bouyer if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 141 1.2.2.2 bouyer return (error); 142 1.2.2.2 bouyer #endif 143 1.2.2.2 bouyer break; 144 1.2.2.2 bouyer } 145 1.2.2.2 bouyer 146 1.2.2.2 bouyer switch (cmd) { 147 1.2.2.2 bouyer case FIFOQ_ENABLE: 148 1.2.2.2 bouyer ifacep = (struct fifoq_interface *)addr; 149 1.2.2.2 bouyer if ((q = altq_lookup(ifacep->fifoq_ifname, ALTQT_FIFOQ)) 150 1.2.2.2 bouyer == NULL) { 151 1.2.2.2 bouyer error = EBADF; 152 1.2.2.2 bouyer break; 153 1.2.2.2 bouyer } 154 1.2.2.2 bouyer error = altq_enable(q->q_ifq); 155 1.2.2.2 bouyer break; 156 1.2.2.2 bouyer 157 1.2.2.2 bouyer case FIFOQ_DISABLE: 158 1.2.2.2 bouyer ifacep = (struct fifoq_interface *)addr; 159 1.2.2.2 bouyer if ((q = altq_lookup(ifacep->fifoq_ifname, ALTQT_FIFOQ)) 160 1.2.2.2 bouyer == NULL) { 161 1.2.2.2 bouyer error = EBADF; 162 1.2.2.2 bouyer break; 163 1.2.2.2 bouyer } 164 1.2.2.2 bouyer error = altq_disable(q->q_ifq); 165 1.2.2.2 bouyer break; 166 1.2.2.2 bouyer 167 1.2.2.2 bouyer case FIFOQ_IF_ATTACH: 168 1.2.2.2 bouyer ifp = ifunit(((struct fifoq_interface *)addr)->fifoq_ifname); 169 1.2.2.2 bouyer if (ifp == NULL) { 170 1.2.2.2 bouyer error = ENXIO; 171 1.2.2.2 bouyer break; 172 1.2.2.2 bouyer } 173 1.2.2.2 bouyer 174 1.2.2.2 bouyer /* allocate and initialize fifoq_state_t */ 175 1.2.2.2 bouyer MALLOC(q, fifoq_state_t *, sizeof(fifoq_state_t), 176 1.2.2.2 bouyer M_DEVBUF, M_WAITOK); 177 1.2.2.2 bouyer if (q == NULL) { 178 1.2.2.2 bouyer error = ENOMEM; 179 1.2.2.2 bouyer break; 180 1.2.2.2 bouyer } 181 1.2.2.2 bouyer bzero(q, sizeof(fifoq_state_t)); 182 1.2.2.2 bouyer 183 1.2.2.2 bouyer q->q_ifq = &ifp->if_snd; 184 1.2.2.2 bouyer q->q_head = q->q_tail = NULL; 185 1.2.2.2 bouyer q->q_len = 0; 186 1.2.2.2 bouyer q->q_limit = FIFOQ_LIMIT; 187 1.2.2.2 bouyer 188 1.2.2.2 bouyer /* 189 1.2.2.2 bouyer * set FIFOQ to this ifnet structure. 190 1.2.2.2 bouyer */ 191 1.2.2.2 bouyer error = altq_attach(q->q_ifq, ALTQT_FIFOQ, q, 192 1.2.2.2 bouyer fifoq_enqueue, fifoq_dequeue, fifoq_request, 193 1.2.2.2 bouyer NULL, NULL); 194 1.2.2.2 bouyer if (error) { 195 1.2.2.2 bouyer FREE(q, M_DEVBUF); 196 1.2.2.2 bouyer break; 197 1.2.2.2 bouyer } 198 1.2.2.2 bouyer 199 1.2.2.2 bouyer /* add this state to the fifoq list */ 200 1.2.2.2 bouyer q->q_next = fifoq_list; 201 1.2.2.2 bouyer fifoq_list = q; 202 1.2.2.2 bouyer break; 203 1.2.2.2 bouyer 204 1.2.2.2 bouyer case FIFOQ_IF_DETACH: 205 1.2.2.2 bouyer ifacep = (struct fifoq_interface *)addr; 206 1.2.2.2 bouyer if ((q = altq_lookup(ifacep->fifoq_ifname, ALTQT_FIFOQ)) 207 1.2.2.2 bouyer == NULL) { 208 1.2.2.2 bouyer error = EBADF; 209 1.2.2.2 bouyer break; 210 1.2.2.2 bouyer } 211 1.2.2.2 bouyer error = fifoq_detach(q); 212 1.2.2.2 bouyer break; 213 1.2.2.2 bouyer 214 1.2.2.2 bouyer case FIFOQ_GETSTATS: 215 1.2.2.2 bouyer do { 216 1.2.2.2 bouyer struct fifoq_getstats *q_stats; 217 1.2.2.2 bouyer 218 1.2.2.2 bouyer q_stats = (struct fifoq_getstats *)addr; 219 1.2.2.2 bouyer if ((q = altq_lookup(q_stats->iface.fifoq_ifname, 220 1.2.2.2 bouyer ALTQT_FIFOQ)) == NULL) { 221 1.2.2.2 bouyer error = EBADF; 222 1.2.2.2 bouyer break; 223 1.2.2.2 bouyer } 224 1.2.2.2 bouyer 225 1.2.2.2 bouyer q_stats->q_len = q->q_len; 226 1.2.2.2 bouyer q_stats->q_limit = q->q_limit; 227 1.2.2.2 bouyer q_stats->xmit_cnt = q->q_stats.xmit_cnt; 228 1.2.2.2 bouyer q_stats->drop_cnt = q->q_stats.drop_cnt; 229 1.2.2.2 bouyer q_stats->period = q->q_stats.period; 230 1.2.2.2 bouyer } while (0); 231 1.2.2.2 bouyer break; 232 1.2.2.2 bouyer 233 1.2.2.2 bouyer case FIFOQ_CONFIG: 234 1.2.2.2 bouyer do { 235 1.2.2.2 bouyer struct fifoq_conf *fc; 236 1.2.2.2 bouyer int limit; 237 1.2.2.2 bouyer 238 1.2.2.2 bouyer fc = (struct fifoq_conf *)addr; 239 1.2.2.2 bouyer if ((q = altq_lookup(fc->iface.fifoq_ifname, 240 1.2.2.2 bouyer ALTQT_FIFOQ)) == NULL) { 241 1.2.2.2 bouyer error = EBADF; 242 1.2.2.2 bouyer break; 243 1.2.2.2 bouyer } 244 1.2.2.2 bouyer limit = fc->fifoq_limit; 245 1.2.2.2 bouyer if (limit < 0) 246 1.2.2.2 bouyer limit = 0; 247 1.2.2.2 bouyer q->q_limit = limit; 248 1.2.2.2 bouyer fc->fifoq_limit = limit; 249 1.2.2.2 bouyer } while (0); 250 1.2.2.2 bouyer break; 251 1.2.2.2 bouyer 252 1.2.2.2 bouyer default: 253 1.2.2.2 bouyer error = EINVAL; 254 1.2.2.2 bouyer break; 255 1.2.2.2 bouyer } 256 1.2.2.2 bouyer return error; 257 1.2.2.2 bouyer } 258 1.2.2.2 bouyer 259 1.2.2.2 bouyer /* 260 1.2.2.2 bouyer * fifoq support routines 261 1.2.2.2 bouyer */ 262 1.2.2.2 bouyer 263 1.2.2.2 bouyer /* 264 1.2.2.2 bouyer * enqueue routine: 265 1.2.2.2 bouyer * 266 1.2.2.2 bouyer * returns: 0 when successfully queued. 267 1.2.2.2 bouyer * ENOBUFS when drop occurs. 268 1.2.2.2 bouyer */ 269 1.2.2.2 bouyer static int 270 1.2.2.2 bouyer fifoq_enqueue(ifq, m, pktattr) 271 1.2.2.2 bouyer struct ifaltq *ifq; 272 1.2.2.2 bouyer struct mbuf *m; 273 1.2.2.2 bouyer struct altq_pktattr *pktattr; 274 1.2.2.2 bouyer { 275 1.2.2.2 bouyer fifoq_state_t *q = (fifoq_state_t *)ifq->altq_disc; 276 1.2.2.2 bouyer 277 1.2.2.2 bouyer /* if the queue is full, drop the incoming packet(drop-tail) */ 278 1.2.2.2 bouyer if (q->q_len >= q->q_limit) { 279 1.2.2.2 bouyer #ifdef FIFOQ_STATS 280 1.2.2.2 bouyer PKTCNTR_ADD(&q->q_stats.drop_cnt, m_pktlen(m)); 281 1.2.2.2 bouyer #endif 282 1.2.2.2 bouyer m_freem(m); 283 1.2.2.2 bouyer return (ENOBUFS); 284 1.2.2.2 bouyer } 285 1.2.2.2 bouyer 286 1.2.2.2 bouyer /* enqueue the packet at the taile of the queue */ 287 1.2.2.2 bouyer m->m_nextpkt = NULL; 288 1.2.2.2 bouyer if (q->q_tail == NULL) 289 1.2.2.2 bouyer q->q_head = m; 290 1.2.2.2 bouyer else 291 1.2.2.2 bouyer q->q_tail->m_nextpkt = m; 292 1.2.2.2 bouyer q->q_tail = m; 293 1.2.2.2 bouyer q->q_len++; 294 1.2.2.2 bouyer ifq->ifq_len++; 295 1.2.2.2 bouyer return 0; 296 1.2.2.2 bouyer } 297 1.2.2.2 bouyer 298 1.2.2.2 bouyer /* 299 1.2.2.2 bouyer * dequeue routine: 300 1.2.2.2 bouyer * must be called in splimp. 301 1.2.2.2 bouyer * 302 1.2.2.2 bouyer * returns: mbuf dequeued. 303 1.2.2.2 bouyer * NULL when no packet is available in the queue. 304 1.2.2.2 bouyer */ 305 1.2.2.2 bouyer /* 306 1.2.2.2 bouyer * ALTDQ_PEEK is provided for drivers which need to know the next packet 307 1.2.2.2 bouyer * to send in advance. 308 1.2.2.2 bouyer * when ALTDQ_PEEK is specified, the next packet to be dequeued is 309 1.2.2.2 bouyer * returned without dequeueing the packet. 310 1.2.2.2 bouyer * when ALTDQ_DEQUEUE is called *immediately after* an ALTDQ_PEEK 311 1.2.2.2 bouyer * operation, the same packet should be returned. 312 1.2.2.2 bouyer */ 313 1.2.2.2 bouyer static struct mbuf * 314 1.2.2.2 bouyer fifoq_dequeue(ifq, op) 315 1.2.2.2 bouyer struct ifaltq *ifq; 316 1.2.2.2 bouyer int op; 317 1.2.2.2 bouyer { 318 1.2.2.2 bouyer fifoq_state_t *q = (fifoq_state_t *)ifq->altq_disc; 319 1.2.2.2 bouyer struct mbuf *m = NULL; 320 1.2.2.2 bouyer 321 1.2.2.2 bouyer if (op == ALTDQ_POLL) 322 1.2.2.2 bouyer return (q->q_head); 323 1.2.2.2 bouyer 324 1.2.2.2 bouyer if ((m = q->q_head) == NULL) 325 1.2.2.2 bouyer return (NULL); 326 1.2.2.2 bouyer 327 1.2.2.2 bouyer if ((q->q_head = m->m_nextpkt) == NULL) 328 1.2.2.2 bouyer q->q_tail = NULL; 329 1.2.2.2 bouyer m->m_nextpkt = NULL; 330 1.2.2.2 bouyer q->q_len--; 331 1.2.2.2 bouyer ifq->ifq_len--; 332 1.2.2.2 bouyer #ifdef FIFOQ_STATS 333 1.2.2.2 bouyer PKTCNTR_ADD(&q->q_stats.xmit_cnt, m_pktlen(m)); 334 1.2.2.2 bouyer if (q->q_len == 0) 335 1.2.2.2 bouyer q->q_stats.period++; 336 1.2.2.2 bouyer #endif 337 1.2.2.2 bouyer return (m); 338 1.2.2.2 bouyer } 339 1.2.2.2 bouyer 340 1.2.2.2 bouyer static int 341 1.2.2.2 bouyer fifoq_request(ifq, req, arg) 342 1.2.2.2 bouyer struct ifaltq *ifq; 343 1.2.2.2 bouyer int req; 344 1.2.2.2 bouyer void *arg; 345 1.2.2.2 bouyer { 346 1.2.2.2 bouyer fifoq_state_t *q = (fifoq_state_t *)ifq->altq_disc; 347 1.2.2.2 bouyer 348 1.2.2.2 bouyer switch (req) { 349 1.2.2.2 bouyer case ALTRQ_PURGE: 350 1.2.2.2 bouyer fifoq_purge(q); 351 1.2.2.2 bouyer break; 352 1.2.2.2 bouyer } 353 1.2.2.2 bouyer return (0); 354 1.2.2.2 bouyer } 355 1.2.2.2 bouyer 356 1.2.2.2 bouyer 357 1.2.2.2 bouyer static int fifoq_detach(q) 358 1.2.2.2 bouyer fifoq_state_t *q; 359 1.2.2.2 bouyer { 360 1.2.2.2 bouyer fifoq_state_t *tmp; 361 1.2.2.2 bouyer int error = 0; 362 1.2.2.2 bouyer 363 1.2.2.2 bouyer if (ALTQ_IS_ENABLED(q->q_ifq)) 364 1.2.2.2 bouyer altq_disable(q->q_ifq); 365 1.2.2.2 bouyer 366 1.2.2.2 bouyer fifoq_purge(q); 367 1.2.2.2 bouyer 368 1.2.2.2 bouyer if ((error = altq_detach(q->q_ifq))) 369 1.2.2.2 bouyer return (error); 370 1.2.2.2 bouyer 371 1.2.2.2 bouyer if (fifoq_list == q) 372 1.2.2.2 bouyer fifoq_list = q->q_next; 373 1.2.2.2 bouyer else { 374 1.2.2.2 bouyer for (tmp = fifoq_list; tmp != NULL; tmp = tmp->q_next) 375 1.2.2.2 bouyer if (tmp->q_next == q) { 376 1.2.2.2 bouyer tmp->q_next = q->q_next; 377 1.2.2.2 bouyer break; 378 1.2.2.2 bouyer } 379 1.2.2.2 bouyer if (tmp == NULL) 380 1.2.2.2 bouyer printf("fifoq_detach: no state in fifoq_list!\n"); 381 1.2.2.2 bouyer } 382 1.2.2.2 bouyer 383 1.2.2.2 bouyer FREE(q, M_DEVBUF); 384 1.2.2.2 bouyer return (error); 385 1.2.2.2 bouyer } 386 1.2.2.2 bouyer 387 1.2.2.2 bouyer /* 388 1.2.2.2 bouyer * fifoq_purge 389 1.2.2.2 bouyer * should be called in splimp or after disabling the fifoq. 390 1.2.2.2 bouyer */ 391 1.2.2.2 bouyer static void fifoq_purge(q) 392 1.2.2.2 bouyer fifoq_state_t *q; 393 1.2.2.2 bouyer { 394 1.2.2.2 bouyer struct mbuf *m; 395 1.2.2.2 bouyer 396 1.2.2.2 bouyer while ((m = q->q_head) != NULL) { 397 1.2.2.2 bouyer q->q_head = m->m_nextpkt; 398 1.2.2.2 bouyer m_freem(m); 399 1.2.2.2 bouyer } 400 1.2.2.2 bouyer q->q_tail = NULL; 401 1.2.2.2 bouyer q->q_len = 0; 402 1.2.2.2 bouyer if (ALTQ_IS_ENABLED(q->q_ifq)) 403 1.2.2.2 bouyer q->q_ifq->ifq_len = 0; 404 1.2.2.2 bouyer } 405 1.2.2.2 bouyer 406 1.2.2.2 bouyer #ifdef KLD_MODULE 407 1.2.2.2 bouyer 408 1.2.2.2 bouyer static struct altqsw fifoq_sw = 409 1.2.2.2 bouyer {"fifoq", fifoqopen, fifoqclose, fifoqioctl}; 410 1.2.2.2 bouyer 411 1.2.2.2 bouyer ALTQ_MODULE(altq_fifoq, ALTQT_FIFOQ, &fifoq_sw); 412 1.2.2.2 bouyer 413 1.2.2.2 bouyer #endif /* KLD_MODULE */ 414 1.2.2.2 bouyer 415 1.2.2.2 bouyer #endif /* ALTQ_FIFOQ */ 416
Indexes created Tue Oct 21 19:09:51 GMT 2025