altq_conf.c revision 1.8
1 /* $NetBSD: altq_conf.c,v 1.8 2002/09/07 11:56:33 gehenna Exp $ */ 2 /* $KAME: altq_conf.c,v 1.13 2002/01/29 10:16:01 kjc Exp $ */ 3 4 /* 5 * Copyright (C) 1997-2000 6 * Sony Computer Science Laboratories Inc. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: altq_conf.c,v 1.8 2002/09/07 11:56:33 gehenna Exp $"); 32 33 #if defined(__FreeBSD__) || defined(__NetBSD__) 34 #include "opt_altq.h" 35 #if (__FreeBSD__ != 2) 36 #include "opt_inet.h" 37 #ifdef __FreeBSD__ 38 #include "opt_inet6.h" 39 #endif 40 #endif 41 #endif /* __FreeBSD__ || __NetBSD__ */ 42 43 /* 44 * altq device interface. 45 */ 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/socket.h> 49 #include <sys/kernel.h> 50 #include <sys/proc.h> 51 #include <sys/errno.h> 52 #if defined(__FreeBSD__) && (__FreeBSD_version < 400000) && defined(DEVFS) 53 #include <sys/devfsext.h> 54 #endif /*DEVFS*/ 55 #include <net/if.h> 56 57 #include <altq/altq.h> 58 #include <altq/altq_conf.h> 59 60 #ifdef ALTQ_CBQ 61 altqdev_decl(cbq); 62 #endif 63 #ifdef ALTQ_WFQ 64 altqdev_decl(wfq); 65 #endif 66 #ifdef ALTQ_AFMAP 67 altqdev_decl(afm); 68 #endif 69 #ifdef ALTQ_FIFOQ 70 altqdev_decl(fifoq); 71 #endif 72 #ifdef ALTQ_RED 73 altqdev_decl(red); 74 #endif 75 #ifdef ALTQ_RIO 76 altqdev_decl(rio); 77 #endif 78 #ifdef ALTQ_LOCALQ 79 altqdev_decl(localq); 80 #endif 81 #ifdef ALTQ_HFSC 82 altqdev_decl(hfsc); 83 #endif 84 #ifdef ALTQ_CDNR 85 altqdev_decl(cdnr); 86 #endif 87 #ifdef ALTQ_BLUE 88 altqdev_decl(blue); 89 #endif 90 #ifdef ALTQ_PRIQ 91 altqdev_decl(priq); 92 #endif 93 94 /* 95 * altq minor device (discipline) table 96 */ 97 static struct altqsw altqsw[] = { /* minor */ 98 {"noq", noopen, noclose, noioctl}, /* 0 (reserved) */ 99 #ifdef ALTQ_CBQ 100 {"cbq", cbqopen, cbqclose, cbqioctl}, /* 1 */ 101 #else 102 {"noq", noopen, noclose, noioctl}, /* 1 */ 103 #endif 104 #ifdef ALTQ_WFQ 105 {"wfq", wfqopen, wfqclose, wfqioctl}, /* 2 */ 106 #else 107 {"noq", noopen, noclose, noioctl}, /* 2 */ 108 #endif 109 #ifdef ALTQ_AFMAP 110 {"afm", afmopen, afmclose, afmioctl}, /* 3 */ 111 #else 112 {"noq", noopen, noclose, noioctl}, /* 3 */ 113 #endif 114 #ifdef ALTQ_FIFOQ 115 {"fifoq", fifoqopen, fifoqclose, fifoqioctl}, /* 4 */ 116 #else 117 {"noq", noopen, noclose, noioctl}, /* 4 */ 118 #endif 119 #ifdef ALTQ_RED 120 {"red", redopen, redclose, redioctl}, /* 5 */ 121 #else 122 {"noq", noopen, noclose, noioctl}, /* 5 */ 123 #endif 124 #ifdef ALTQ_RIO 125 {"rio", rioopen, rioclose, rioioctl}, /* 6 */ 126 #else 127 {"noq", noopen, noclose, noioctl}, /* 6 */ 128 #endif 129 #ifdef ALTQ_LOCALQ 130 {"localq",localqopen, localqclose, localqioctl}, /* 7 (local use) */ 131 #else 132 {"noq", noopen, noclose, noioctl}, /* 7 (local use) */ 133 #endif 134 #ifdef ALTQ_HFSC 135 {"hfsc",hfscopen, hfscclose, hfscioctl}, /* 8 */ 136 #else 137 {"noq", noopen, noclose, noioctl}, /* 8 */ 138 #endif 139 #ifdef ALTQ_CDNR 140 {"cdnr",cdnropen, cdnrclose, cdnrioctl}, /* 9 */ 141 #else 142 {"noq", noopen, noclose, noioctl}, /* 9 */ 143 #endif 144 #ifdef ALTQ_BLUE 145 {"blue",blueopen, blueclose, blueioctl}, /* 10 */ 146 #else 147 {"noq", noopen, noclose, noioctl}, /* 10 */ 148 #endif 149 #ifdef ALTQ_PRIQ 150 {"priq",priqopen, priqclose, priqioctl}, /* 11 */ 151 #else 152 {"noq", noopen, noclose, noioctl}, /* 11 */ 153 #endif 154 }; 155 156 /* 157 * altq major device support 158 */ 159 int naltqsw = sizeof (altqsw) / sizeof (altqsw[0]); 160 161 #if defined(__NetBSD__) 162 dev_type_open(altqopen); 163 dev_type_close(altqclose); 164 dev_type_ioctl(altqioctl); 165 #endif 166 #if defined(__OpenBSD__) 167 static d_open_t altqopen; 168 static d_close_t altqclose; 169 static d_ioctl_t altqioctl; 170 #endif 171 #ifdef __FreeBSD__ 172 static void altq_drvinit __P((void *)); 173 #else 174 void altqattach __P((int)); 175 #endif 176 177 #if defined(__FreeBSD__) 178 #define CDEV_MAJOR 96 /* FreeBSD official number */ 179 #elif defined(__OpenBSD__) 180 #if defined(__i386__) 181 #define CDEV_MAJOR 74 /* OpenBSD i386 (official) */ 182 #elif defined(__alpha__) 183 #define CDEV_MAJOR 53 /* OpenBSD alpha (official) */ 184 #else 185 #error arch not supported 186 #endif 187 #endif 188 189 #if defined(__FreeBSD__) 190 #if (__FreeBSD_version < 400000) 191 static struct cdevsw altq_cdevsw = 192 { altqopen, altqclose, noread, nowrite, 193 altqioctl, nostop, nullreset, nodevtotty, 194 seltrue, nommap, NULL, "altq", NULL, -1 }; 195 #else 196 static struct cdevsw altq_cdevsw = 197 { altqopen, altqclose, noread, nowrite, 198 altqioctl, seltrue, nommap, nostrategy, 199 "altq", CDEV_MAJOR, nodump, nopsize, 0, -1 }; 200 #endif 201 #endif 202 203 #if defined(__NetBSD__) 204 const struct cdevsw altq_cdevsw = { 205 altqopen, altqclose, noread, nowrite, altqioctl, 206 nostop, notty, nopoll, nommap, 207 }; 208 #endif 209 210 #if !defined(__NetBSD__) && !defined(__OpenBSD__) 211 static 212 #endif 213 int 214 altqopen(dev, flag, fmt, p) 215 dev_t dev; 216 int flag, fmt; 217 struct proc *p; 218 { 219 int unit = minor(dev); 220 221 if (unit == 0) 222 return (0); 223 if (unit < naltqsw) 224 return (*altqsw[unit].d_open)(dev, flag, fmt, p); 225 226 return ENXIO; 227 } 228 229 #if !defined(__NetBSD__) && !defined(__OpenBSD__) 230 static 231 #endif 232 int 233 altqclose(dev, flag, fmt, p) 234 dev_t dev; 235 int flag, fmt; 236 struct proc *p; 237 { 238 int unit = minor(dev); 239 240 if (unit == 0) 241 return (0); 242 if (unit < naltqsw) 243 return (*altqsw[unit].d_close)(dev, flag, fmt, p); 244 245 return ENXIO; 246 } 247 248 #if !defined(__NetBSD__) && !defined(__OpenBSD__) 249 static 250 #endif 251 int 252 altqioctl(dev, cmd, addr, flag, p) 253 dev_t dev; 254 ioctlcmd_t cmd; 255 caddr_t addr; 256 int flag; 257 struct proc *p; 258 { 259 int unit = minor(dev); 260 261 if (unit == 0) { 262 struct ifnet *ifp; 263 struct altqreq *typereq; 264 struct tbrreq *tbrreq; 265 int error; 266 267 switch (cmd) { 268 case ALTQGTYPE: 269 case ALTQTBRGET: 270 break; 271 default: 272 #if (__FreeBSD_version > 400000) 273 if ((error = suser(p)) != 0) 274 return (error); 275 #else 276 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 277 return (error); 278 #endif 279 break; 280 } 281 282 switch (cmd) { 283 case ALTQGTYPE: 284 typereq = (struct altqreq *)addr; 285 if ((ifp = ifunit(typereq->ifname)) == NULL) 286 return (EINVAL); 287 typereq->arg = (u_long)ifp->if_snd.altq_type; 288 return (0); 289 case ALTQTBRSET: 290 tbrreq = (struct tbrreq *)addr; 291 if ((ifp = ifunit(tbrreq->ifname)) == NULL) 292 return (EINVAL); 293 return tbr_set(&ifp->if_snd, &tbrreq->tb_prof); 294 case ALTQTBRGET: 295 tbrreq = (struct tbrreq *)addr; 296 if ((ifp = ifunit(tbrreq->ifname)) == NULL) 297 return (EINVAL); 298 return tbr_get(&ifp->if_snd, &tbrreq->tb_prof); 299 default: 300 return (EINVAL); 301 } 302 } 303 if (unit < naltqsw) 304 return (*altqsw[unit].d_ioctl)(dev, cmd, addr, flag, p); 305 306 return ENXIO; 307 } 308 309 #if !defined(__NetBSD__) 310 static int altq_devsw_installed = 0; 311 #endif 312 313 #ifdef __FreeBSD__ 314 #if (__FreeBSD_version < 400000) 315 #ifdef DEVFS 316 static void *altq_devfs_token[sizeof (altqsw) / sizeof (altqsw[0])]; 317 #endif 318 319 static void 320 altq_drvinit(unused) 321 void *unused; 322 { 323 dev_t dev; 324 #ifdef DEVFS 325 int i; 326 #endif 327 328 if (!altq_devsw_installed) { 329 dev = makedev(CDEV_MAJOR,0); 330 cdevsw_add(&dev,&altq_cdevsw,NULL); 331 altq_devsw_installed = 1; 332 #ifdef DEVFS 333 for (i=0; i<naltqsw; i++) 334 altq_devfs_token[i] = 335 devfs_add_devswf(&altq_cdevsw, i, DV_CHR, 336 0, 0, 0644, altqsw[i].d_name); 337 #endif 338 printf("altq: major number is %d\n", CDEV_MAJOR); 339 } 340 } 341 342 #else /* FreeBSD 4.x */ 343 344 static void 345 altq_drvinit(unused) 346 void *unused; 347 { 348 int unit; 349 350 cdevsw_add(&altq_cdevsw); 351 altq_devsw_installed = 1; 352 printf("altq: major number is %d\n", CDEV_MAJOR); 353 354 /* create minor devices */ 355 for (unit = 0; unit < naltqsw; unit++) 356 make_dev(&altq_cdevsw, unit, 0, 0, 0644, 357 altqsw[unit].d_name); 358 } 359 360 #endif /* FreeBSD 4.x */ 361 362 SYSINIT(altqdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,altq_drvinit,NULL) 363 364 #endif 365 366 #ifdef ALTQ_KLD 367 /* 368 * KLD support 369 */ 370 static int altq_module_register __P((struct altq_module_data *)); 371 static int altq_module_deregister __P((struct altq_module_data *)); 372 373 static struct altq_module_data *altq_modules[ALTQT_MAX]; 374 static struct altqsw noqdisc = {"noq", noopen, noclose, noioctl}; 375 376 void altq_module_incref(type) 377 int type; 378 { 379 if (type < 0 || type >= ALTQT_MAX || altq_modules[type] == NULL) 380 return; 381 382 altq_modules[type]->ref++; 383 } 384 385 void altq_module_declref(type) 386 int type; 387 { 388 if (type < 0 || type >= ALTQT_MAX || altq_modules[type] == NULL) 389 return; 390 391 altq_modules[type]->ref--; 392 } 393 394 static int 395 altq_module_register(mdata) 396 struct altq_module_data *mdata; 397 { 398 int type = mdata->type; 399 400 if (type < 0 || type >= ALTQT_MAX) 401 return (EINVAL); 402 if (altqsw[type].d_open != noopen) 403 return (EBUSY); 404 altqsw[type] = *mdata->altqsw; /* set discipline functions */ 405 altq_modules[type] = mdata; /* save module data pointer */ 406 return (0); 407 } 408 409 static int 410 altq_module_deregister(mdata) 411 struct altq_module_data *mdata; 412 { 413 int type = mdata->type; 414 415 if (type < 0 || type >= ALTQT_MAX) 416 return (EINVAL); 417 if (mdata != altq_modules[type]) 418 return (EINVAL); 419 if (altq_modules[type]->ref > 0) 420 return (EBUSY); 421 altqsw[type] = noqdisc; 422 altq_modules[type] = NULL; 423 return (0); 424 } 425 426 int 427 altq_module_handler(mod, cmd, arg) 428 module_t mod; 429 int cmd; 430 void * arg; 431 { 432 struct altq_module_data *data = (struct altq_module_data *)arg; 433 int error = 0; 434 435 switch (cmd) { 436 case MOD_LOAD: 437 error = altq_module_register(data); 438 break; 439 440 case MOD_UNLOAD: 441 error = altq_module_deregister(data); 442 break; 443 444 default: 445 error = EINVAL; 446 break; 447 } 448 449 return(error); 450 } 451 452 #endif /* ALTQ_KLD */ 453
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