altq_conf.c revision 1.19
1 /* $NetBSD: altq_conf.c,v 1.19 2007/03/04 05:59:01 christos Exp $ */ 2 /* $KAME: altq_conf.c,v 1.24 2005/04/13 03:44:24 suz Exp $ */ 3 4 /* 5 * Copyright (C) 1997-2003 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 1.19 2007/03/04 05:59:01 christos Exp $"); 32 33 #ifdef _KERNEL_OPT 34 #include "opt_altq.h" 35 #include "opt_inet.h" 36 #endif 37 38 /* 39 * altq device interface. 40 */ 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/socket.h> 44 #include <sys/kernel.h> 45 #include <sys/proc.h> 46 #include <sys/errno.h> 47 #include <sys/kauth.h> 48 49 #include <net/if.h> 50 51 #include <altq/altq.h> 52 #include <altq/altqconf.h> 53 #include <altq/altq_conf.h> 54 55 #ifdef ALTQ3_COMPAT 56 57 #ifdef ALTQ_CBQ 58 altqdev_decl(cbq); 59 #endif 60 #ifdef ALTQ_WFQ 61 altqdev_decl(wfq); 62 #endif 63 #ifdef ALTQ_AFMAP 64 altqdev_decl(afm); 65 #endif 66 #ifdef ALTQ_FIFOQ 67 altqdev_decl(fifoq); 68 #endif 69 #ifdef ALTQ_RED 70 altqdev_decl(red); 71 #endif 72 #ifdef ALTQ_RIO 73 altqdev_decl(rio); 74 #endif 75 #ifdef ALTQ_LOCALQ 76 altqdev_decl(localq); 77 #endif 78 #ifdef ALTQ_HFSC 79 altqdev_decl(hfsc); 80 #endif 81 #ifdef ALTQ_CDNR 82 altqdev_decl(cdnr); 83 #endif 84 #ifdef ALTQ_BLUE 85 altqdev_decl(blue); 86 #endif 87 #ifdef ALTQ_PRIQ 88 altqdev_decl(priq); 89 #endif 90 #ifdef ALTQ_JOBS 91 altqdev_decl(jobs); 92 #endif 93 94 /* 95 * altq minor device (discipline) table 96 */ 97 static struct altqsw altqsw[] = { /* minor */ 98 {"altq", 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 #ifdef ALTQ_JOBS 155 {"jobs",jobsopen, jobsclose, jobsioctl}, /* 12 */ 156 #else 157 {"noq", noopen, noclose, noioctl}, /* 12 */ 158 #endif 159 }; 160 161 /* 162 * altq major device support 163 */ 164 int naltqsw = sizeof (altqsw) / sizeof (altqsw[0]); 165 166 dev_type_open(altqopen); 167 dev_type_close(altqclose); 168 dev_type_ioctl(altqioctl); 169 170 const struct cdevsw altq_cdevsw = { 171 altqopen, altqclose, noread, nowrite, altqioctl, 172 nostop, notty, nopoll, nommap, nokqfilter, D_OTHER, 173 }; 174 175 int 176 altqopen(dev_t dev, int flag, int fmt, struct lwp *l) 177 { 178 int unit = minor(dev); 179 180 if (unit == 0) 181 return (0); 182 if (unit < naltqsw) 183 return (*altqsw[unit].d_open)(dev, flag, fmt, l); 184 185 return ENXIO; 186 } 187 188 int 189 altqclose(dev_t dev, int flag, int fmt, struct lwp *l) 190 { 191 int unit = minor(dev); 192 193 if (unit == 0) 194 return (0); 195 if (unit < naltqsw) 196 return (*altqsw[unit].d_close)(dev, flag, fmt, l); 197 198 return ENXIO; 199 } 200 201 int 202 altqioctl(dev_t dev, ioctlcmd_t cmd, void *addr, int flag, struct lwp *l) 203 { 204 int unit = minor(dev); 205 206 if (unit == 0) { 207 struct ifnet *ifp; 208 struct altqreq *typereq; 209 struct tbrreq *tbrreq; 210 int error; 211 212 switch (cmd) { 213 case ALTQGTYPE: 214 case ALTQTBRGET: 215 break; 216 default: 217 #if (__FreeBSD_version > 400000) 218 if ((error = suser(p)) != 0) 219 return (error); 220 #else 221 if ((error = kauth_authorize_network(l->l_cred, 222 KAUTH_NETWORK_ALTQ, KAUTH_REQ_NETWORK_ALTQ_CONF, 223 NULL, NULL, NULL)) != 0) 224 return (error); 225 #endif 226 break; 227 } 228 229 switch (cmd) { 230 case ALTQGTYPE: 231 typereq = (struct altqreq *)addr; 232 if ((ifp = ifunit(typereq->ifname)) == NULL) 233 return (EINVAL); 234 typereq->arg = (u_long)ifp->if_snd.altq_type; 235 return (0); 236 case ALTQTBRSET: 237 tbrreq = (struct tbrreq *)addr; 238 if ((ifp = ifunit(tbrreq->ifname)) == NULL) 239 return (EINVAL); 240 return tbr_set(&ifp->if_snd, &tbrreq->tb_prof); 241 case ALTQTBRGET: 242 tbrreq = (struct tbrreq *)addr; 243 if ((ifp = ifunit(tbrreq->ifname)) == NULL) 244 return (EINVAL); 245 return tbr_get(&ifp->if_snd, &tbrreq->tb_prof); 246 default: 247 return (EINVAL); 248 } 249 } 250 if (unit < naltqsw) 251 return (*altqsw[unit].d_ioctl)(dev, cmd, addr, flag, l); 252 253 return ENXIO; 254 } 255 256 #ifdef __FreeBSD__ 257 static int altq_devsw_installed = 0; 258 #endif 259 260 #ifdef __FreeBSD__ 261 static void 262 altq_drvinit(void *unused) 263 { 264 int unit; 265 266 #if 0 267 mtx_init(&altq_mtx, "altq global lock", MTX_DEF); 268 #endif 269 altq_devsw_installed = 1; 270 printf("altq: attached. Major number assigned automatically.\n"); 271 272 /* create minor devices */ 273 for (unit = 0; unit < naltqsw; unit++) { 274 if (unit == 0 || altqsw[unit].d_open != NULL) 275 altqsw[unit].dev = make_dev(&altq_cdevsw, unit, 276 UID_ROOT, GID_WHEEL, 0644, "altq/%s", 277 altqsw[unit].d_name); 278 } 279 } 280 281 SYSINIT(altqdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,altq_drvinit,NULL) 282 283 #endif /* FreeBSD */ 284 285 #ifdef ALTQ_KLD 286 /* 287 * KLD support 288 */ 289 static int altq_module_register(struct altq_module_data *); 290 static int altq_module_deregister(struct altq_module_data *); 291 292 static struct altq_module_data *altq_modules[ALTQT_MAX]; 293 #if __FreeBSD_version < 502103 294 static struct altqsw noqdisc = {"noq", noopen, noclose, noioctl}; 295 #else 296 static struct altqsw noqdisc = {"noq"}; 297 #endif 298 299 void altq_module_incref(int type) 300 { 301 if (type < 0 || type >= ALTQT_MAX || altq_modules[type] == NULL) 302 return; 303 304 altq_modules[type]->ref++; 305 } 306 307 void altq_module_declref(int type) 308 { 309 if (type < 0 || type >= ALTQT_MAX || altq_modules[type] == NULL) 310 return; 311 312 altq_modules[type]->ref--; 313 } 314 315 static int 316 altq_module_register(struct altq_module_data *mdata) 317 { 318 int type = mdata->type; 319 320 if (type < 0 || type >= ALTQT_MAX) 321 return (EINVAL); 322 #if (__FreeBSD_version < 502103) 323 if (altqsw[type].d_open != noopen) 324 #else 325 if (altqsw[type].d_open != NULL) 326 #endif 327 return (EBUSY); 328 altqsw[type] = *mdata->altqsw; /* set discipline functions */ 329 altq_modules[type] = mdata; /* save module data pointer */ 330 #if (__FreeBSD_version < 502103) 331 make_dev(&altq_cdevsw, type, UID_ROOT, GID_WHEEL, 0644, 332 "altq/%s", altqsw[type].d_name); 333 #else 334 altqsw[type].dev = make_dev(&altq_cdevsw, type, UID_ROOT, GID_WHEEL, 335 0644, "altq/%s", altqsw[type].d_name); 336 #endif 337 return (0); 338 } 339 340 static int 341 altq_module_deregister(struct altq_module_data *mdata) 342 { 343 int type = mdata->type; 344 345 if (type < 0 || type >= ALTQT_MAX) 346 return (EINVAL); 347 if (mdata != altq_modules[type]) 348 return (EINVAL); 349 if (altq_modules[type]->ref > 0) 350 return (EBUSY); 351 #if (__FreeBSD_version < 502103) 352 destroy_dev(makedev(CDEV_MAJOR, type)); 353 #else 354 destroy_dev(altqsw[type].dev); 355 #endif 356 altqsw[type] = noqdisc; 357 altq_modules[type] = NULL; 358 return (0); 359 } 360 361 int 362 altq_module_handler(module_t mod, int cmd, void *arg) 363 { 364 struct altq_module_data *data = (struct altq_module_data *)arg; 365 int error = 0; 366 367 switch (cmd) { 368 case MOD_LOAD: 369 error = altq_module_register(data); 370 break; 371 372 case MOD_UNLOAD: 373 error = altq_module_deregister(data); 374 break; 375 376 default: 377 error = EINVAL; 378 break; 379 } 380 381 return (error); 382 } 383 384 #endif /* ALTQ_KLD */ 385 #endif /* ALTQ3_COMPAT */ 386
Indexes created Mon Sep 29 18:09:42 GMT 2025