rfcomm_socket.c revision 1.7
1 /* $NetBSD: rfcomm_socket.c,v 1.7 2007/04/21 06:15:23 plunky Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Itronix Inc. 5 * All rights reserved. 6 * 7 * Written by Iain Hibbert for Itronix Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of Itronix Inc. may not be used to endorse 18 * or promote products derived from this software without specific 19 * prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 * ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: rfcomm_socket.c,v 1.7 2007/04/21 06:15:23 plunky Exp $"); 36 37 /* load symbolic names */ 38 #ifdef BLUETOOTH_DEBUG 39 #define PRUREQUESTS 40 #define PRCOREQUESTS 41 #endif 42 43 #include <sys/param.h> 44 #include <sys/domain.h> 45 #include <sys/kernel.h> 46 #include <sys/mbuf.h> 47 #include <sys/proc.h> 48 #include <sys/protosw.h> 49 #include <sys/socket.h> 50 #include <sys/socketvar.h> 51 #include <sys/systm.h> 52 53 #include <netbt/bluetooth.h> 54 #include <netbt/rfcomm.h> 55 56 /**************************************************************************** 57 * 58 * RFCOMM SOCK_STREAM Sockets - serial line emulation 59 * 60 */ 61 62 static void rfcomm_connecting(void *); 63 static void rfcomm_connected(void *); 64 static void rfcomm_disconnected(void *, int); 65 static void *rfcomm_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *); 66 static void rfcomm_complete(void *, int); 67 static void rfcomm_linkmode(void *, int); 68 static void rfcomm_input(void *, struct mbuf *); 69 70 static const struct btproto rfcomm_proto = { 71 rfcomm_connecting, 72 rfcomm_connected, 73 rfcomm_disconnected, 74 rfcomm_newconn, 75 rfcomm_complete, 76 rfcomm_linkmode, 77 rfcomm_input, 78 }; 79 80 /* sysctl variables */ 81 int rfcomm_sendspace = 4096; 82 int rfcomm_recvspace = 4096; 83 84 /* 85 * User Request. 86 * up is socket 87 * m is either 88 * optional mbuf chain containing message 89 * ioctl command (PRU_CONTROL) 90 * nam is either 91 * optional mbuf chain containing an address 92 * ioctl data (PRU_CONTROL) 93 * optionally protocol number (PRU_ATTACH) 94 * message flags (PRU_RCVD) 95 * ctl is either 96 * optional mbuf chain containing socket options 97 * optional interface pointer (PRU_CONTROL, PRU_PURGEIF) 98 * l is pointer to process requesting action (if any) 99 * 100 * we are responsible for disposing of m and ctl if 101 * they are mbuf chains 102 */ 103 int 104 rfcomm_usrreq(struct socket *up, int req, struct mbuf *m, 105 struct mbuf *nam, struct mbuf *ctl, struct lwp *l) 106 { 107 struct rfcomm_dlc *pcb = up->so_pcb; 108 struct sockaddr_bt *sa; 109 struct mbuf *m0; 110 int err = 0; 111 112 DPRINTFN(2, "%s\n", prurequests[req]); 113 114 switch (req) { 115 case PRU_CONTROL: 116 return EPASSTHROUGH; 117 118 case PRU_PURGEIF: 119 return EOPNOTSUPP; 120 121 case PRU_ATTACH: 122 if (pcb != NULL) 123 return EINVAL; 124 125 /* 126 * Since we have nothing to add, we attach the DLC 127 * structure directly to our PCB pointer. 128 */ 129 err = rfcomm_attach((struct rfcomm_dlc **)&up->so_pcb, 130 &rfcomm_proto, up); 131 if (err) 132 return err; 133 134 err = soreserve(up, rfcomm_sendspace, rfcomm_recvspace); 135 if (err) 136 return err; 137 138 err = rfcomm_rcvd(up->so_pcb, sbspace(&up->so_rcv)); 139 if (err) 140 return err; 141 142 return 0; 143 } 144 145 if (pcb == NULL) { 146 err = EINVAL; 147 goto release; 148 } 149 150 switch(req) { 151 case PRU_DISCONNECT: 152 soisdisconnecting(up); 153 return rfcomm_disconnect(pcb, up->so_linger); 154 155 case PRU_ABORT: 156 rfcomm_disconnect(pcb, 0); 157 soisdisconnected(up); 158 /* fall through to */ 159 case PRU_DETACH: 160 return rfcomm_detach((struct rfcomm_dlc **)&up->so_pcb); 161 162 case PRU_BIND: 163 KASSERT(nam != NULL); 164 sa = mtod(nam, struct sockaddr_bt *); 165 166 if (sa->bt_len != sizeof(struct sockaddr_bt)) 167 return EINVAL; 168 169 if (sa->bt_family != AF_BLUETOOTH) 170 return EAFNOSUPPORT; 171 172 return rfcomm_bind(pcb, sa); 173 174 case PRU_CONNECT: 175 KASSERT(nam != NULL); 176 sa = mtod(nam, struct sockaddr_bt *); 177 178 if (sa->bt_len != sizeof(struct sockaddr_bt)) 179 return EINVAL; 180 181 if (sa->bt_family != AF_BLUETOOTH) 182 return EAFNOSUPPORT; 183 184 soisconnecting(up); 185 return rfcomm_connect(pcb, sa); 186 187 case PRU_PEERADDR: 188 KASSERT(nam != NULL); 189 sa = mtod(nam, struct sockaddr_bt *); 190 nam->m_len = sizeof(struct sockaddr_bt); 191 return rfcomm_peeraddr(pcb, sa); 192 193 case PRU_SOCKADDR: 194 KASSERT(nam != NULL); 195 sa = mtod(nam, struct sockaddr_bt *); 196 nam->m_len = sizeof(struct sockaddr_bt); 197 return rfcomm_sockaddr(pcb, sa); 198 199 case PRU_SHUTDOWN: 200 socantsendmore(up); 201 break; 202 203 case PRU_SEND: 204 KASSERT(m != NULL); 205 206 if (ctl) /* no use for that */ 207 m_freem(ctl); 208 209 m0 = m_copypacket(m, M_DONTWAIT); 210 if (m0 == NULL) 211 return ENOMEM; 212 213 sbappendstream(&up->so_snd, m); 214 215 return rfcomm_send(pcb, m0); 216 217 case PRU_SENSE: 218 return 0; /* (no release) */ 219 220 case PRU_RCVD: 221 return rfcomm_rcvd(pcb, sbspace(&up->so_rcv)); 222 223 case PRU_RCVOOB: 224 return EOPNOTSUPP; /* (no release) */ 225 226 case PRU_LISTEN: 227 return rfcomm_listen(pcb); 228 229 case PRU_ACCEPT: 230 KASSERT(nam != NULL); 231 sa = mtod(nam, struct sockaddr_bt *); 232 nam->m_len = sizeof(struct sockaddr_bt); 233 return rfcomm_peeraddr(pcb, sa); 234 235 case PRU_CONNECT2: 236 case PRU_SENDOOB: 237 case PRU_FASTTIMO: 238 case PRU_SLOWTIMO: 239 case PRU_PROTORCV: 240 case PRU_PROTOSEND: 241 err = EOPNOTSUPP; 242 break; 243 244 default: 245 UNKNOWN(req); 246 err = EOPNOTSUPP; 247 break; 248 } 249 250 release: 251 if (m) m_freem(m); 252 if (ctl) m_freem(ctl); 253 return err; 254 } 255 256 /* 257 * rfcomm_ctloutput(request, socket, level, optname, opt) 258 * 259 */ 260 int 261 rfcomm_ctloutput(int req, struct socket *so, int level, 262 int optname, struct mbuf **opt) 263 { 264 struct rfcomm_dlc *pcb = so->so_pcb; 265 struct mbuf *m; 266 int err = 0; 267 268 DPRINTFN(2, "%s\n", prcorequests[req]); 269 270 if (pcb == NULL) 271 return EINVAL; 272 273 if (level != BTPROTO_RFCOMM) 274 return ENOPROTOOPT; 275 276 switch(req) { 277 case PRCO_GETOPT: 278 m = m_get(M_WAIT, MT_SOOPTS); 279 m->m_len = rfcomm_getopt(pcb, optname, mtod(m, void *)); 280 if (m->m_len == 0) { 281 m_freem(m); 282 m = NULL; 283 err = ENOPROTOOPT; 284 } 285 *opt = m; 286 break; 287 288 case PRCO_SETOPT: 289 m = *opt; 290 KASSERT(m != NULL); 291 err = rfcomm_setopt(pcb, optname, mtod(m, void *)); 292 m_freem(m); 293 break; 294 295 default: 296 err = ENOPROTOOPT; 297 break; 298 } 299 300 return err; 301 } 302 303 /********************************************************************** 304 * 305 * RFCOMM callbacks 306 */ 307 308 static void 309 rfcomm_connecting(void *arg) 310 { 311 /* struct socket *so = arg; */ 312 313 KASSERT(arg != NULL); 314 DPRINTF("Connecting\n"); 315 } 316 317 static void 318 rfcomm_connected(void *arg) 319 { 320 struct socket *so = arg; 321 322 KASSERT(so != NULL); 323 DPRINTF("Connected\n"); 324 soisconnected(so); 325 } 326 327 static void 328 rfcomm_disconnected(void *arg, int err) 329 { 330 struct socket *so = arg; 331 332 KASSERT(so != NULL); 333 DPRINTF("Disconnected\n"); 334 335 so->so_error = err; 336 soisdisconnected(so); 337 } 338 339 static void * 340 rfcomm_newconn(void *arg, struct sockaddr_bt *laddr, 341 struct sockaddr_bt *raddr) 342 { 343 struct socket *so = arg; 344 345 DPRINTF("New Connection\n"); 346 so = sonewconn(so, 0); 347 if (so == NULL) 348 return NULL; 349 350 soisconnecting(so); 351 352 return so->so_pcb; 353 } 354 355 /* 356 * rfcomm_complete(rfcomm_dlc, length) 357 * 358 * length bytes are sent and may be removed from socket buffer 359 */ 360 static void 361 rfcomm_complete(void *arg, int length) 362 { 363 struct socket *so = arg; 364 365 sbdrop(&so->so_snd, length); 366 sowwakeup(so); 367 } 368 369 /* 370 * rfcomm_linkmode(rfcomm_dlc, new) 371 * 372 * link mode change notification. 373 */ 374 static void 375 rfcomm_linkmode(void *arg, int new) 376 { 377 struct socket *so = arg; 378 int mode; 379 380 DPRINTF("auth %s, encrypt %s, secure %s\n", 381 (new & RFCOMM_LM_AUTH ? "on" : "off"), 382 (new & RFCOMM_LM_ENCRYPT ? "on" : "off"), 383 (new & RFCOMM_LM_SECURE ? "on" : "off")); 384 385 (void)rfcomm_getopt(so->so_pcb, SO_RFCOMM_LM, &mode); 386 if (((mode & RFCOMM_LM_AUTH) && !(new & RFCOMM_LM_AUTH)) 387 || ((mode & RFCOMM_LM_ENCRYPT) && !(new & RFCOMM_LM_ENCRYPT)) 388 || ((mode & RFCOMM_LM_SECURE) && !(new & RFCOMM_LM_SECURE))) 389 rfcomm_disconnect(so->so_pcb, 0); 390 } 391 392 /* 393 * rfcomm_input(rfcomm_dlc, mbuf) 394 */ 395 static void 396 rfcomm_input(void *arg, struct mbuf *m) 397 { 398 struct socket *so = arg; 399 400 KASSERT(so != NULL); 401 402 if (m->m_pkthdr.len > sbspace(&so->so_rcv)) { 403 printf("%s: %d bytes dropped (socket buffer full)\n", 404 __func__, m->m_pkthdr.len); 405 m_freem(m); 406 return; 407 } 408 409 DPRINTFN(10, "received %d bytes\n", m->m_pkthdr.len); 410 411 sbappendstream(&so->so_rcv, m); 412 sorwakeup(so); 413 } 414
Indexes created Thu Sep 25 08:09:54 GMT 2025