6 * Copyright (c) 2001-2003 Maksim Yevmenkin <m_evmenkin@yahoo.com>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * $Id: ng_btsocket_rfcomm.c,v 1.28 2003/09/14 23:29:06 max Exp $
31 * $FreeBSD: src/sys/netgraph/bluetooth/socket/ng_btsocket_rfcomm.c,v 1.27 2007/10/29 19:06:47 emax Exp $
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/bitstring.h>
37 #include <sys/domain.h>
38 #include <sys/endian.h>
39 #include <sys/errno.h>
40 #include <sys/filedesc.h>
41 #include <sys/kernel.h>
43 #include <sys/malloc.h>
45 #include <sys/mutex.h>
47 #include <sys/protosw.h>
48 #include <sys/queue.h>
49 #include <sys/socket.h>
50 #include <sys/socketvar.h>
51 #include <sys/sysctl.h>
52 #include <sys/taskqueue.h>
54 #include "ng_message.h"
56 #include "bluetooth/include/ng_bluetooth.h"
57 #include "bluetooth/include/ng_hci.h"
58 #include "bluetooth/include/ng_l2cap.h"
59 #include "bluetooth/include/ng_btsocket.h"
60 #include "bluetooth/include/ng_btsocket_l2cap.h"
61 #include "bluetooth/include/ng_btsocket_rfcomm.h"
64 #ifdef NG_SEPARATE_MALLOC
65 MALLOC_DEFINE(M_NETGRAPH_BTSOCKET_RFCOMM, "netgraph_btsocks_rfcomm",
66 "Netgraph Bluetooth RFCOMM sockets");
68 #define M_NETGRAPH_BTSOCKET_RFCOMM M_NETGRAPH
69 #endif /* NG_SEPARATE_MALLOC */
72 #define NG_BTSOCKET_RFCOMM_INFO \
73 if (ng_btsocket_rfcomm_debug_level >= NG_BTSOCKET_INFO_LEVEL) \
76 #define NG_BTSOCKET_RFCOMM_WARN \
77 if (ng_btsocket_rfcomm_debug_level >= NG_BTSOCKET_WARN_LEVEL) \
80 #define NG_BTSOCKET_RFCOMM_ERR \
81 if (ng_btsocket_rfcomm_debug_level >= NG_BTSOCKET_ERR_LEVEL) \
84 #define NG_BTSOCKET_RFCOMM_ALERT \
85 if (ng_btsocket_rfcomm_debug_level >= NG_BTSOCKET_ALERT_LEVEL) \
90 /* Local prototypes */
91 static void ng_btsocket_rfcomm_upcall
92 (struct socket *so, void *arg, int waitflag);
93 static void ng_btsocket_rfcomm_sessions_task
94 (void *ctx, int pending);
95 static void ng_btsocket_rfcomm_session_task
96 (ng_btsocket_rfcomm_session_p s);
97 #define ng_btsocket_rfcomm_task_wakeup() \
98 taskqueue_enqueue(taskqueue_swi_giant, &ng_btsocket_rfcomm_task)
100 static ng_btsocket_rfcomm_pcb_p ng_btsocket_rfcomm_connect_ind
101 (ng_btsocket_rfcomm_session_p s, int channel);
102 static void ng_btsocket_rfcomm_connect_cfm
103 (ng_btsocket_rfcomm_session_p s);
105 static int ng_btsocket_rfcomm_session_create
106 (ng_btsocket_rfcomm_session_p *sp, struct socket *l2so,
107 bdaddr_p src, bdaddr_p dst, struct thread *td);
108 static int ng_btsocket_rfcomm_session_accept
109 (ng_btsocket_rfcomm_session_p s0);
110 static int ng_btsocket_rfcomm_session_connect
111 (ng_btsocket_rfcomm_session_p s);
112 static int ng_btsocket_rfcomm_session_receive
113 (ng_btsocket_rfcomm_session_p s);
114 static int ng_btsocket_rfcomm_session_send
115 (ng_btsocket_rfcomm_session_p s);
116 static void ng_btsocket_rfcomm_session_clean
117 (ng_btsocket_rfcomm_session_p s);
118 static void ng_btsocket_rfcomm_session_process_pcb
119 (ng_btsocket_rfcomm_session_p s);
120 static ng_btsocket_rfcomm_session_p ng_btsocket_rfcomm_session_by_addr
121 (bdaddr_p src, bdaddr_p dst);
123 static int ng_btsocket_rfcomm_receive_frame
124 (ng_btsocket_rfcomm_session_p s, struct mbuf *m0);
125 static int ng_btsocket_rfcomm_receive_sabm
126 (ng_btsocket_rfcomm_session_p s, int dlci);
127 static int ng_btsocket_rfcomm_receive_disc
128 (ng_btsocket_rfcomm_session_p s, int dlci);
129 static int ng_btsocket_rfcomm_receive_ua
130 (ng_btsocket_rfcomm_session_p s, int dlci);
131 static int ng_btsocket_rfcomm_receive_dm
132 (ng_btsocket_rfcomm_session_p s, int dlci);
133 static int ng_btsocket_rfcomm_receive_uih
134 (ng_btsocket_rfcomm_session_p s, int dlci, int pf, struct mbuf *m0);
135 static int ng_btsocket_rfcomm_receive_mcc
136 (ng_btsocket_rfcomm_session_p s, struct mbuf *m0);
137 static int ng_btsocket_rfcomm_receive_test
138 (ng_btsocket_rfcomm_session_p s, struct mbuf *m0);
139 static int ng_btsocket_rfcomm_receive_fc
140 (ng_btsocket_rfcomm_session_p s, struct mbuf *m0);
141 static int ng_btsocket_rfcomm_receive_msc
142 (ng_btsocket_rfcomm_session_p s, struct mbuf *m0);
143 static int ng_btsocket_rfcomm_receive_rpn
144 (ng_btsocket_rfcomm_session_p s, struct mbuf *m0);
145 static int ng_btsocket_rfcomm_receive_rls
146 (ng_btsocket_rfcomm_session_p s, struct mbuf *m0);
147 static int ng_btsocket_rfcomm_receive_pn
148 (ng_btsocket_rfcomm_session_p s, struct mbuf *m0);
149 static void ng_btsocket_rfcomm_set_pn
150 (ng_btsocket_rfcomm_pcb_p pcb, u_int8_t cr, u_int8_t flow_control,
151 u_int8_t credits, u_int16_t mtu);
153 static int ng_btsocket_rfcomm_send_command
154 (ng_btsocket_rfcomm_session_p s, u_int8_t type, u_int8_t dlci);
155 static int ng_btsocket_rfcomm_send_uih
156 (ng_btsocket_rfcomm_session_p s, u_int8_t address, u_int8_t pf,
157 u_int8_t credits, struct mbuf *data);
158 static int ng_btsocket_rfcomm_send_msc
159 (ng_btsocket_rfcomm_pcb_p pcb);
160 static int ng_btsocket_rfcomm_send_pn
161 (ng_btsocket_rfcomm_pcb_p pcb);
162 static int ng_btsocket_rfcomm_send_credits
163 (ng_btsocket_rfcomm_pcb_p pcb);
165 static int ng_btsocket_rfcomm_pcb_send
166 (ng_btsocket_rfcomm_pcb_p pcb, int limit);
167 static void ng_btsocket_rfcomm_pcb_kill
168 (ng_btsocket_rfcomm_pcb_p pcb, int error);
169 static ng_btsocket_rfcomm_pcb_p ng_btsocket_rfcomm_pcb_by_dlci
170 (ng_btsocket_rfcomm_session_p s, int dlci);
171 static ng_btsocket_rfcomm_pcb_p ng_btsocket_rfcomm_pcb_listener
172 (bdaddr_p src, int channel);
174 static void ng_btsocket_rfcomm_timeout
175 (ng_btsocket_rfcomm_pcb_p pcb);
176 static void ng_btsocket_rfcomm_untimeout
177 (ng_btsocket_rfcomm_pcb_p pcb);
178 static void ng_btsocket_rfcomm_process_timeout
181 static struct mbuf * ng_btsocket_rfcomm_prepare_packet
182 (struct sockbuf *sb, int length);
185 extern int ifqmaxlen;
186 static u_int32_t ng_btsocket_rfcomm_debug_level;
187 static u_int32_t ng_btsocket_rfcomm_timo;
188 struct task ng_btsocket_rfcomm_task;
189 static LIST_HEAD(, ng_btsocket_rfcomm_session) ng_btsocket_rfcomm_sessions;
190 static struct mtx ng_btsocket_rfcomm_sessions_mtx;
191 static LIST_HEAD(, ng_btsocket_rfcomm_pcb) ng_btsocket_rfcomm_sockets;
192 static struct mtx ng_btsocket_rfcomm_sockets_mtx;
195 SYSCTL_DECL(_net_bluetooth_rfcomm_sockets);
196 SYSCTL_NODE(_net_bluetooth_rfcomm_sockets, OID_AUTO, stream, CTLFLAG_RW,
197 0, "Bluetooth STREAM RFCOMM sockets family");
198 SYSCTL_INT(_net_bluetooth_rfcomm_sockets_stream, OID_AUTO, debug_level,
200 &ng_btsocket_rfcomm_debug_level, NG_BTSOCKET_INFO_LEVEL,
201 "Bluetooth STREAM RFCOMM sockets debug level");
202 SYSCTL_INT(_net_bluetooth_rfcomm_sockets_stream, OID_AUTO, timeout,
204 &ng_btsocket_rfcomm_timo, 60,
205 "Bluetooth STREAM RFCOMM sockets timeout");
207 /*****************************************************************************
208 *****************************************************************************
210 *****************************************************************************
211 *****************************************************************************/
213 static u_int8_t ng_btsocket_rfcomm_crc_table[256] = {
214 0x00, 0x91, 0xe3, 0x72, 0x07, 0x96, 0xe4, 0x75,
215 0x0e, 0x9f, 0xed, 0x7c, 0x09, 0x98, 0xea, 0x7b,
216 0x1c, 0x8d, 0xff, 0x6e, 0x1b, 0x8a, 0xf8, 0x69,
217 0x12, 0x83, 0xf1, 0x60, 0x15, 0x84, 0xf6, 0x67,
219 0x38, 0xa9, 0xdb, 0x4a, 0x3f, 0xae, 0xdc, 0x4d,
220 0x36, 0xa7, 0xd5, 0x44, 0x31, 0xa0, 0xd2, 0x43,
221 0x24, 0xb5, 0xc7, 0x56, 0x23, 0xb2, 0xc0, 0x51,
222 0x2a, 0xbb, 0xc9, 0x58, 0x2d, 0xbc, 0xce, 0x5f,
224 0x70, 0xe1, 0x93, 0x02, 0x77, 0xe6, 0x94, 0x05,
225 0x7e, 0xef, 0x9d, 0x0c, 0x79, 0xe8, 0x9a, 0x0b,
226 0x6c, 0xfd, 0x8f, 0x1e, 0x6b, 0xfa, 0x88, 0x19,
227 0x62, 0xf3, 0x81, 0x10, 0x65, 0xf4, 0x86, 0x17,
229 0x48, 0xd9, 0xab, 0x3a, 0x4f, 0xde, 0xac, 0x3d,
230 0x46, 0xd7, 0xa5, 0x34, 0x41, 0xd0, 0xa2, 0x33,
231 0x54, 0xc5, 0xb7, 0x26, 0x53, 0xc2, 0xb0, 0x21,
232 0x5a, 0xcb, 0xb9, 0x28, 0x5d, 0xcc, 0xbe, 0x2f,
234 0xe0, 0x71, 0x03, 0x92, 0xe7, 0x76, 0x04, 0x95,
235 0xee, 0x7f, 0x0d, 0x9c, 0xe9, 0x78, 0x0a, 0x9b,
236 0xfc, 0x6d, 0x1f, 0x8e, 0xfb, 0x6a, 0x18, 0x89,
237 0xf2, 0x63, 0x11, 0x80, 0xf5, 0x64, 0x16, 0x87,
239 0xd8, 0x49, 0x3b, 0xaa, 0xdf, 0x4e, 0x3c, 0xad,
240 0xd6, 0x47, 0x35, 0xa4, 0xd1, 0x40, 0x32, 0xa3,
241 0xc4, 0x55, 0x27, 0xb6, 0xc3, 0x52, 0x20, 0xb1,
242 0xca, 0x5b, 0x29, 0xb8, 0xcd, 0x5c, 0x2e, 0xbf,
244 0x90, 0x01, 0x73, 0xe2, 0x97, 0x06, 0x74, 0xe5,
245 0x9e, 0x0f, 0x7d, 0xec, 0x99, 0x08, 0x7a, 0xeb,
246 0x8c, 0x1d, 0x6f, 0xfe, 0x8b, 0x1a, 0x68, 0xf9,
247 0x82, 0x13, 0x61, 0xf0, 0x85, 0x14, 0x66, 0xf7,
249 0xa8, 0x39, 0x4b, 0xda, 0xaf, 0x3e, 0x4c, 0xdd,
250 0xa6, 0x37, 0x45, 0xd4, 0xa1, 0x30, 0x42, 0xd3,
251 0xb4, 0x25, 0x57, 0xc6, 0xb3, 0x22, 0x50, 0xc1,
252 0xba, 0x2b, 0x59, 0xc8, 0xbd, 0x2c, 0x5e, 0xcf
257 ng_btsocket_rfcomm_crc(u_int8_t *data, int length)
262 crc = ng_btsocket_rfcomm_crc_table[crc ^ *data++];
265 } /* ng_btsocket_rfcomm_crc */
269 ng_btsocket_rfcomm_fcs2(u_int8_t *data)
271 return (0xff - ng_btsocket_rfcomm_crc(data, 2));
272 } /* ng_btsocket_rfcomm_fcs2 */
276 ng_btsocket_rfcomm_fcs3(u_int8_t *data)
278 return (0xff - ng_btsocket_rfcomm_crc(data, 3));
279 } /* ng_btsocket_rfcomm_fcs3 */
284 * From Bluetooth spec
286 * "... In 07.10, the frame check sequence (FCS) is calculated on different
287 * sets of fields for different frame types. These are the fields that the
288 * FCS are calculated on:
290 * For SABM, DISC, UA, DM frames: on Address, Control and length field.
291 * For UIH frames: on Address and Control field.
293 * (This is stated here for clarification, and to set the standard for RFCOMM;
294 * the fields included in FCS calculation have actually changed in version
295 * 7.0.0 of TS 07.10, but RFCOMM will not change the FCS calculation scheme
296 * from the one above.) ..."
300 ng_btsocket_rfcomm_check_fcs(u_int8_t *data, int type, u_int8_t fcs)
302 if (type != RFCOMM_FRAME_UIH)
303 return (ng_btsocket_rfcomm_fcs3(data) != fcs);
305 return (ng_btsocket_rfcomm_fcs2(data) != fcs);
306 } /* ng_btsocket_rfcomm_check_fcs */
308 /*****************************************************************************
309 *****************************************************************************
311 *****************************************************************************
312 *****************************************************************************/
315 * Initialize everything
319 ng_btsocket_rfcomm_init(void)
321 ng_btsocket_rfcomm_debug_level = NG_BTSOCKET_WARN_LEVEL;
322 ng_btsocket_rfcomm_timo = 60;
325 TASK_INIT(&ng_btsocket_rfcomm_task, 0,
326 ng_btsocket_rfcomm_sessions_task, NULL);
328 /* RFCOMM sessions list */
329 LIST_INIT(&ng_btsocket_rfcomm_sessions);
330 mtx_init(&ng_btsocket_rfcomm_sessions_mtx,
331 "btsocks_rfcomm_sessions_mtx", NULL, MTX_DEF);
333 /* RFCOMM sockets list */
334 LIST_INIT(&ng_btsocket_rfcomm_sockets);
335 mtx_init(&ng_btsocket_rfcomm_sockets_mtx,
336 "btsocks_rfcomm_sockets_mtx", NULL, MTX_DEF);
337 } /* ng_btsocket_rfcomm_init */
340 * Abort connection on socket
344 ng_btsocket_rfcomm_abort(struct socket *so)
347 so->so_error = ECONNABORTED;
348 (void)ng_btsocket_rfcomm_disconnect(so);
349 } /* ng_btsocket_rfcomm_abort */
352 ng_btsocket_rfcomm_close(struct socket *so)
355 (void)ng_btsocket_rfcomm_disconnect(so);
356 } /* ng_btsocket_rfcomm_close */
359 * Accept connection on socket. Nothing to do here, socket must be connected
360 * and ready, so just return peer address and be done with it.
364 ng_btsocket_rfcomm_accept(struct socket *so, struct sockaddr **nam)
366 return (ng_btsocket_rfcomm_peeraddr(so, nam));
367 } /* ng_btsocket_rfcomm_accept */
370 * Create and attach new socket
374 ng_btsocket_rfcomm_attach(struct socket *so, int proto, struct thread *td)
376 ng_btsocket_rfcomm_pcb_p pcb = so2rfcomm_pcb(so);
379 /* Check socket and protocol */
380 if (so->so_type != SOCK_STREAM)
381 return (ESOCKTNOSUPPORT);
383 #if 0 /* XXX sonewconn() calls "pru_attach" with proto == 0 */
385 if (proto != BLUETOOTH_PROTO_RFCOMM)
386 return (EPROTONOSUPPORT);
392 /* Reserve send and receive space if it is not reserved yet */
393 if ((so->so_snd.sb_hiwat == 0) || (so->so_rcv.sb_hiwat == 0)) {
394 error = soreserve(so, NG_BTSOCKET_RFCOMM_SENDSPACE,
395 NG_BTSOCKET_RFCOMM_RECVSPACE);
400 /* Allocate the PCB */
401 pcb = kmalloc(sizeof(*pcb), M_NETGRAPH_BTSOCKET_RFCOMM,
402 M_WAITOK | M_NULLOK | M_ZERO);
406 /* Link the PCB and the socket */
407 so->so_pcb = (caddr_t) pcb;
411 pcb->state = NG_BTSOCKET_RFCOMM_DLC_CLOSED;
412 pcb->flags = NG_BTSOCKET_RFCOMM_DLC_CFC;
415 pcb->rmodem = (RFCOMM_MODEM_RTC | RFCOMM_MODEM_RTR | RFCOMM_MODEM_DV);
417 pcb->mtu = RFCOMM_DEFAULT_MTU;
419 pcb->rx_cred = RFCOMM_DEFAULT_CREDITS;
421 mtx_init(&pcb->pcb_mtx, "btsocks_rfcomm_pcb_mtx", NULL, MTX_DEF);
422 callout_handle_init(&pcb->timo);
424 /* Add the PCB to the list */
425 mtx_lock(&ng_btsocket_rfcomm_sockets_mtx);
426 LIST_INSERT_HEAD(&ng_btsocket_rfcomm_sockets, pcb, next);
427 mtx_unlock(&ng_btsocket_rfcomm_sockets_mtx);
430 } /* ng_btsocket_rfcomm_attach */
437 ng_btsocket_rfcomm_bind(struct socket *so, struct sockaddr *nam,
440 ng_btsocket_rfcomm_pcb_t *pcb = so2rfcomm_pcb(so), *pcb1;
441 struct sockaddr_rfcomm *sa = (struct sockaddr_rfcomm *) nam;
449 if (sa->rfcomm_family != AF_BLUETOOTH)
450 return (EAFNOSUPPORT);
451 if (sa->rfcomm_len != sizeof(*sa))
453 if (sa->rfcomm_channel > 30)
456 mtx_lock(&pcb->pcb_mtx);
458 if (sa->rfcomm_channel != 0) {
459 mtx_lock(&ng_btsocket_rfcomm_sockets_mtx);
461 LIST_FOREACH(pcb1, &ng_btsocket_rfcomm_sockets, next) {
462 if (pcb1->channel == sa->rfcomm_channel &&
463 bcmp(&pcb1->src, &sa->rfcomm_bdaddr,
464 sizeof(pcb1->src)) == 0) {
465 mtx_unlock(&ng_btsocket_rfcomm_sockets_mtx);
466 mtx_unlock(&pcb->pcb_mtx);
472 mtx_unlock(&ng_btsocket_rfcomm_sockets_mtx);
475 bcopy(&sa->rfcomm_bdaddr, &pcb->src, sizeof(pcb->src));
476 pcb->channel = sa->rfcomm_channel;
478 mtx_unlock(&pcb->pcb_mtx);
481 } /* ng_btsocket_rfcomm_bind */
488 ng_btsocket_rfcomm_connect(struct socket *so, struct sockaddr *nam,
491 ng_btsocket_rfcomm_pcb_t *pcb = so2rfcomm_pcb(so);
492 struct sockaddr_rfcomm *sa = (struct sockaddr_rfcomm *) nam;
493 ng_btsocket_rfcomm_session_t *s = NULL;
494 struct socket *l2so = NULL;
503 if (sa->rfcomm_family != AF_BLUETOOTH)
504 return (EAFNOSUPPORT);
505 if (sa->rfcomm_len != sizeof(*sa))
507 if (sa->rfcomm_channel > 30)
509 if (sa->rfcomm_channel == 0 ||
510 bcmp(&sa->rfcomm_bdaddr, NG_HCI_BDADDR_ANY, sizeof(bdaddr_t)) == 0)
511 return (EDESTADDRREQ);
514 * XXX FIXME - This is FUBAR. socreate() will call soalloc(1), i.e.
515 * soalloc() is allowed to sleep in MALLOC. This creates "could sleep"
516 * WITNESS warnings. To work around this problem we will create L2CAP
517 * socket first and then check if we actually need it. Note that we
518 * will not check for errors in socreate() because if we failed to
519 * create L2CAP socket at this point we still might have already open
523 error = socreate(PF_BLUETOOTH, &l2so, SOCK_SEQPACKET,
524 BLUETOOTH_PROTO_L2CAP, td->td_ucred, td);
527 * Look for session between "pcb->src" and "sa->rfcomm_bdaddr" (dst)
530 mtx_lock(&ng_btsocket_rfcomm_sessions_mtx);
532 s = ng_btsocket_rfcomm_session_by_addr(&pcb->src, &sa->rfcomm_bdaddr);
535 * We need to create new RFCOMM session. Check if we have L2CAP
536 * socket. If l2so == NULL then error has the error code from
541 mtx_unlock(&ng_btsocket_rfcomm_sessions_mtx);
545 error = ng_btsocket_rfcomm_session_create(&s, l2so,
546 &pcb->src, &sa->rfcomm_bdaddr, td);
548 mtx_unlock(&ng_btsocket_rfcomm_sessions_mtx);
553 } else if (l2so != NULL)
554 soclose(l2so); /* we don't need new L2CAP socket */
557 * Check if we already have the same DLCI the the same session
560 mtx_lock(&s->session_mtx);
561 mtx_lock(&pcb->pcb_mtx);
563 dlci = RFCOMM_MKDLCI(!INITIATOR(s), sa->rfcomm_channel);
565 if (ng_btsocket_rfcomm_pcb_by_dlci(s, dlci) != NULL) {
566 mtx_unlock(&pcb->pcb_mtx);
567 mtx_unlock(&s->session_mtx);
568 mtx_unlock(&ng_btsocket_rfcomm_sessions_mtx);
574 * Check session state and if its not acceptable then refuse connection
578 case NG_BTSOCKET_RFCOMM_SESSION_CONNECTING:
579 case NG_BTSOCKET_RFCOMM_SESSION_CONNECTED:
580 case NG_BTSOCKET_RFCOMM_SESSION_OPEN:
582 * Update destination address and channel and attach
586 bcopy(&sa->rfcomm_bdaddr, &pcb->dst, sizeof(pcb->dst));
587 pcb->channel = sa->rfcomm_channel;
590 LIST_INSERT_HEAD(&s->dlcs, pcb, session_next);
593 ng_btsocket_rfcomm_timeout(pcb);
594 soisconnecting(pcb->so);
596 if (s->state == NG_BTSOCKET_RFCOMM_SESSION_OPEN) {
598 bcopy(&so2l2cap_pcb(s->l2so)->src, &pcb->src,
601 pcb->state = NG_BTSOCKET_RFCOMM_DLC_CONFIGURING;
603 error = ng_btsocket_rfcomm_send_pn(pcb);
605 error = ng_btsocket_rfcomm_task_wakeup();
607 pcb->state = NG_BTSOCKET_RFCOMM_DLC_W4_CONNECT;
615 mtx_unlock(&pcb->pcb_mtx);
616 mtx_unlock(&s->session_mtx);
617 mtx_unlock(&ng_btsocket_rfcomm_sessions_mtx);
620 } /* ng_btsocket_rfcomm_connect */
623 * Process ioctl's calls on socket.
624 * XXX FIXME this should provide interface to the RFCOMM multiplexor channel
628 ng_btsocket_rfcomm_control(struct socket *so, u_long cmd, caddr_t data,
629 struct ifnet *ifp, struct thread *td)
632 } /* ng_btsocket_rfcomm_control */
635 * Process getsockopt/setsockopt system calls
639 ng_btsocket_rfcomm_ctloutput(struct socket *so, struct sockopt *sopt)
641 ng_btsocket_rfcomm_pcb_p pcb = so2rfcomm_pcb(so);
642 struct ng_btsocket_rfcomm_fc_info fcinfo;
647 if (sopt->sopt_level != SOL_RFCOMM)
650 mtx_lock(&pcb->pcb_mtx);
652 switch (sopt->sopt_dir) {
654 switch (sopt->sopt_name) {
656 error = sooptcopyout(sopt, &pcb->mtu, sizeof(pcb->mtu));
659 case SO_RFCOMM_FC_INFO:
660 fcinfo.lmodem = pcb->lmodem;
661 fcinfo.rmodem = pcb->rmodem;
662 fcinfo.tx_cred = pcb->tx_cred;
663 fcinfo.rx_cred = pcb->rx_cred;
664 fcinfo.cfc = (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_CFC)?
668 error = sooptcopyout(sopt, &fcinfo, sizeof(fcinfo));
678 switch (sopt->sopt_name) {
690 mtx_unlock(&pcb->pcb_mtx);
693 } /* ng_btsocket_rfcomm_ctloutput */
696 * Detach and destroy socket
700 ng_btsocket_rfcomm_detach(struct socket *so)
702 ng_btsocket_rfcomm_pcb_p pcb = so2rfcomm_pcb(so);
704 KASSERT(pcb != NULL, ("ng_btsocket_rfcomm_detach: pcb == NULL"));
706 mtx_lock(&pcb->pcb_mtx);
710 switch (pcb->state) {
711 case NG_BTSOCKET_RFCOMM_DLC_W4_CONNECT:
712 case NG_BTSOCKET_RFCOMM_DLC_CONFIGURING:
713 case NG_BTSOCKET_RFCOMM_DLC_CONNECTING:
714 case NG_BTSOCKET_RFCOMM_DLC_CONNECTED:
715 /* XXX What to do with pending request? */
716 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_TIMO)
717 ng_btsocket_rfcomm_untimeout(pcb);
719 if (pcb->state == NG_BTSOCKET_RFCOMM_DLC_W4_CONNECT)
720 pcb->flags |= NG_BTSOCKET_RFCOMM_DLC_DETACHED;
722 pcb->state = NG_BTSOCKET_RFCOMM_DLC_DISCONNECTING;
724 ng_btsocket_rfcomm_task_wakeup();
727 case NG_BTSOCKET_RFCOMM_DLC_DISCONNECTING:
728 ng_btsocket_rfcomm_task_wakeup();
732 while (pcb->state != NG_BTSOCKET_RFCOMM_DLC_CLOSED)
733 msleep(&pcb->state, &pcb->pcb_mtx, PZERO, "rf_det", 0);
735 if (pcb->session != NULL)
736 panic("%s: pcb->session != NULL", __func__);
737 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_TIMO)
738 panic("%s: timeout on closed DLC, flags=%#x",
739 __func__, pcb->flags);
741 mtx_lock(&ng_btsocket_rfcomm_sockets_mtx);
742 LIST_REMOVE(pcb, next);
743 mtx_unlock(&ng_btsocket_rfcomm_sockets_mtx);
745 mtx_unlock(&pcb->pcb_mtx);
747 mtx_destroy(&pcb->pcb_mtx);
748 bzero(pcb, sizeof(*pcb));
749 kfree(pcb, M_NETGRAPH_BTSOCKET_RFCOMM);
751 soisdisconnected(so);
752 sofree(so); /* for so_pcb = NULL */
753 } /* ng_btsocket_rfcomm_detach */
760 ng_btsocket_rfcomm_disconnect(struct socket *so)
762 ng_btsocket_rfcomm_pcb_p pcb = so2rfcomm_pcb(so);
767 mtx_lock(&pcb->pcb_mtx);
769 if (pcb->state == NG_BTSOCKET_RFCOMM_DLC_DISCONNECTING) {
770 mtx_unlock(&pcb->pcb_mtx);
771 return (EINPROGRESS);
774 /* XXX What to do with pending request? */
775 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_TIMO)
776 ng_btsocket_rfcomm_untimeout(pcb);
778 switch (pcb->state) {
779 case NG_BTSOCKET_RFCOMM_DLC_CONFIGURING: /* XXX can we get here? */
780 case NG_BTSOCKET_RFCOMM_DLC_CONNECTING: /* XXX can we get here? */
781 case NG_BTSOCKET_RFCOMM_DLC_CONNECTED:
784 * Just change DLC state and enqueue RFCOMM task. It will
785 * queue and send DISC on the DLC.
788 pcb->state = NG_BTSOCKET_RFCOMM_DLC_DISCONNECTING;
789 soisdisconnecting(so);
791 ng_btsocket_rfcomm_task_wakeup();
794 case NG_BTSOCKET_RFCOMM_DLC_CLOSED:
795 case NG_BTSOCKET_RFCOMM_DLC_W4_CONNECT:
799 panic("%s: Invalid DLC state=%d, flags=%#x",
800 __func__, pcb->state, pcb->flags);
804 mtx_unlock(&pcb->pcb_mtx);
807 } /* ng_btsocket_rfcomm_disconnect */
810 * Listen on socket. First call to listen() will create listening RFCOMM session
814 ng_btsocket_rfcomm_listen(struct socket *so, int backlog, struct thread *td)
816 ng_btsocket_rfcomm_pcb_p pcb = so2rfcomm_pcb(so), pcb1;
817 ng_btsocket_rfcomm_session_p s = NULL;
818 struct socket *l2so = NULL;
819 int error, socreate_error, usedchannels;
823 if (pcb->channel > 30)
824 return (EADDRNOTAVAIL);
828 mtx_lock(&pcb->pcb_mtx);
830 if (pcb->channel == 0) {
831 mtx_lock(&ng_btsocket_rfcomm_sockets_mtx);
833 LIST_FOREACH(pcb1, &ng_btsocket_rfcomm_sockets, next)
834 if (pcb1->channel != 0 &&
835 bcmp(&pcb1->src, &pcb->src, sizeof(pcb->src)) == 0)
836 usedchannels |= (1 << (pcb1->channel - 1));
838 for (pcb->channel = 30; pcb->channel > 0; pcb->channel --)
839 if (!(usedchannels & (1 << (pcb->channel - 1))))
842 if (pcb->channel == 0) {
843 mtx_unlock(&ng_btsocket_rfcomm_sockets_mtx);
844 mtx_unlock(&pcb->pcb_mtx);
846 return (EADDRNOTAVAIL);
849 mtx_unlock(&ng_btsocket_rfcomm_sockets_mtx);
852 mtx_unlock(&pcb->pcb_mtx);
855 * XXX FIXME - This is FUBAR. socreate() will call soalloc(1), i.e.
856 * soalloc() is allowed to sleep in MALLOC. This creates "could sleep"
857 * WITNESS warnings. To work around this problem we will create L2CAP
858 * socket first and then check if we actually need it. Note that we
859 * will not check for errors in socreate() because if we failed to
860 * create L2CAP socket at this point we still might have already open
864 socreate_error = socreate(PF_BLUETOOTH, &l2so, SOCK_SEQPACKET,
865 BLUETOOTH_PROTO_L2CAP, td->td_ucred, td);
868 * Transition the socket and session into the LISTENING state. Check
869 * for collisions first, as there can only be one.
871 mtx_lock(&ng_btsocket_rfcomm_sessions_mtx);
873 error = solisten_proto_check(so);
878 LIST_FOREACH(s, &ng_btsocket_rfcomm_sessions, next)
879 if (s->state == NG_BTSOCKET_RFCOMM_SESSION_LISTENING)
884 * We need to create default RFCOMM session. Check if we have
885 * L2CAP socket. If l2so == NULL then error has the error code
889 error = socreate_error;
894 * Create default listen RFCOMM session. The default RFCOMM
895 * session will listen on ANY address.
897 * XXX FIXME Note that currently there is no way to adjust MTU
898 * for the default session.
900 error = ng_btsocket_rfcomm_session_create(&s, l2so,
901 NG_HCI_BDADDR_ANY, NULL, td);
907 solisten_proto(so, backlog);
910 mtx_unlock(&ng_btsocket_rfcomm_sessions_mtx);
912 * If we still have an l2so reference here, it's unneeded, so release
918 } /* ng_btsocket_listen */
925 ng_btsocket_rfcomm_peeraddr(struct socket *so, struct sockaddr **nam)
927 ng_btsocket_rfcomm_pcb_p pcb = so2rfcomm_pcb(so);
928 struct sockaddr_rfcomm sa;
933 bcopy(&pcb->dst, &sa.rfcomm_bdaddr, sizeof(sa.rfcomm_bdaddr));
934 sa.rfcomm_channel = pcb->channel;
935 sa.rfcomm_len = sizeof(sa);
936 sa.rfcomm_family = AF_BLUETOOTH;
938 *nam = sodupsockaddr((struct sockaddr *) &sa, M_WAITOK | M_NULLOK);
940 return ((*nam == NULL)? ENOMEM : 0);
941 } /* ng_btsocket_rfcomm_peeraddr */
944 * Send data to socket
948 ng_btsocket_rfcomm_send(struct socket *so, int flags, struct mbuf *m,
949 struct sockaddr *nam, struct mbuf *control, struct thread *td)
951 ng_btsocket_rfcomm_pcb_t *pcb = so2rfcomm_pcb(so);
954 /* Check socket and input */
955 if (pcb == NULL || m == NULL || control != NULL) {
960 mtx_lock(&pcb->pcb_mtx);
962 /* Make sure DLC is connected */
963 if (pcb->state != NG_BTSOCKET_RFCOMM_DLC_CONNECTED) {
964 mtx_unlock(&pcb->pcb_mtx);
969 /* Put the packet on the socket's send queue and wakeup RFCOMM task */
970 sbappend(&pcb->so->so_snd, m);
973 if (!(pcb->flags & NG_BTSOCKET_RFCOMM_DLC_SENDING)) {
974 pcb->flags |= NG_BTSOCKET_RFCOMM_DLC_SENDING;
975 error = ng_btsocket_rfcomm_task_wakeup();
978 mtx_unlock(&pcb->pcb_mtx);
980 NG_FREE_M(m); /* checks for != NULL */
984 } /* ng_btsocket_rfcomm_send */
991 ng_btsocket_rfcomm_sockaddr(struct socket *so, struct sockaddr **nam)
993 ng_btsocket_rfcomm_pcb_p pcb = so2rfcomm_pcb(so);
994 struct sockaddr_rfcomm sa;
999 bcopy(&pcb->src, &sa.rfcomm_bdaddr, sizeof(sa.rfcomm_bdaddr));
1000 sa.rfcomm_channel = pcb->channel;
1001 sa.rfcomm_len = sizeof(sa);
1002 sa.rfcomm_family = AF_BLUETOOTH;
1004 *nam = sodupsockaddr((struct sockaddr *) &sa, M_WAITOK | M_NULLOK);
1006 return ((*nam == NULL)? ENOMEM : 0);
1007 } /* ng_btsocket_rfcomm_sockaddr */
1010 * Upcall function for L2CAP sockets. Enqueue RFCOMM task.
1014 ng_btsocket_rfcomm_upcall(struct socket *so, void *arg, int waitflag)
1019 panic("%s: so == NULL", __func__);
1021 if ((error = ng_btsocket_rfcomm_task_wakeup()) != 0)
1022 NG_BTSOCKET_RFCOMM_ALERT(
1023 "%s: Could not enqueue RFCOMM task, error=%d\n", __func__, error);
1024 } /* ng_btsocket_rfcomm_upcall */
1027 * RFCOMM task. Will handle all RFCOMM sessions in one pass.
1028 * XXX FIXME does not scale very well
1032 ng_btsocket_rfcomm_sessions_task(void *ctx, int pending)
1034 ng_btsocket_rfcomm_session_p s = NULL, s_next = NULL;
1036 mtx_lock(&ng_btsocket_rfcomm_sessions_mtx);
1038 for (s = LIST_FIRST(&ng_btsocket_rfcomm_sessions); s != NULL; ) {
1039 mtx_lock(&s->session_mtx);
1040 s_next = LIST_NEXT(s, next);
1042 ng_btsocket_rfcomm_session_task(s);
1044 if (s->state == NG_BTSOCKET_RFCOMM_SESSION_CLOSED) {
1045 /* Unlink and clean the session */
1046 LIST_REMOVE(s, next);
1048 NG_BT_MBUFQ_DRAIN(&s->outq);
1049 if (!LIST_EMPTY(&s->dlcs))
1050 panic("%s: DLC list is not empty", __func__);
1052 /* Close L2CAP socket */
1053 s->l2so->so_upcallarg = NULL;
1054 s->l2so->so_upcall = NULL;
1055 SOCKBUF_LOCK(&s->l2so->so_rcv);
1056 s->l2so->so_rcv.sb_flags &= ~SB_UPCALL;
1057 SOCKBUF_UNLOCK(&s->l2so->so_rcv);
1058 SOCKBUF_LOCK(&s->l2so->so_snd);
1059 s->l2so->so_snd.sb_flags &= ~SB_UPCALL;
1060 SOCKBUF_UNLOCK(&s->l2so->so_snd);
1063 mtx_unlock(&s->session_mtx);
1065 mtx_destroy(&s->session_mtx);
1066 bzero(s, sizeof(*s));
1067 kfree(s, M_NETGRAPH_BTSOCKET_RFCOMM);
1069 mtx_unlock(&s->session_mtx);
1074 mtx_unlock(&ng_btsocket_rfcomm_sessions_mtx);
1075 } /* ng_btsocket_rfcomm_sessions_task */
1078 * Process RFCOMM session. Will handle all RFCOMM sockets in one pass.
1082 ng_btsocket_rfcomm_session_task(ng_btsocket_rfcomm_session_p s)
1084 mtx_assert(&s->session_mtx, MA_OWNED);
1086 if (s->l2so->so_rcv.sb_state & SBS_CANTRCVMORE) {
1087 NG_BTSOCKET_RFCOMM_INFO(
1088 "%s: L2CAP connection has been terminated, so=%p, so_state=%#x, so_count=%d, " \
1089 "state=%d, flags=%#x\n", __func__, s->l2so, s->l2so->so_state,
1090 s->l2so->so_count, s->state, s->flags);
1092 s->state = NG_BTSOCKET_RFCOMM_SESSION_CLOSED;
1093 ng_btsocket_rfcomm_session_clean(s);
1096 /* Now process upcall */
1098 /* Try to accept new L2CAP connection(s) */
1099 case NG_BTSOCKET_RFCOMM_SESSION_LISTENING:
1100 while (ng_btsocket_rfcomm_session_accept(s) == 0)
1104 /* Process the results of the L2CAP connect */
1105 case NG_BTSOCKET_RFCOMM_SESSION_CONNECTING:
1106 ng_btsocket_rfcomm_session_process_pcb(s);
1108 if (ng_btsocket_rfcomm_session_connect(s) != 0) {
1109 s->state = NG_BTSOCKET_RFCOMM_SESSION_CLOSED;
1110 ng_btsocket_rfcomm_session_clean(s);
1114 /* Try to receive/send more data */
1115 case NG_BTSOCKET_RFCOMM_SESSION_CONNECTED:
1116 case NG_BTSOCKET_RFCOMM_SESSION_OPEN:
1117 case NG_BTSOCKET_RFCOMM_SESSION_DISCONNECTING:
1118 ng_btsocket_rfcomm_session_process_pcb(s);
1120 if (ng_btsocket_rfcomm_session_receive(s) != 0) {
1121 s->state = NG_BTSOCKET_RFCOMM_SESSION_CLOSED;
1122 ng_btsocket_rfcomm_session_clean(s);
1123 } else if (ng_btsocket_rfcomm_session_send(s) != 0) {
1124 s->state = NG_BTSOCKET_RFCOMM_SESSION_CLOSED;
1125 ng_btsocket_rfcomm_session_clean(s);
1129 case NG_BTSOCKET_RFCOMM_SESSION_CLOSED:
1133 panic("%s: Invalid session state=%d, flags=%#x",
1134 __func__, s->state, s->flags);
1137 } /* ng_btsocket_rfcomm_session_task */
1140 * Process RFCOMM connection indicator. Caller must hold s->session_mtx
1143 static ng_btsocket_rfcomm_pcb_p
1144 ng_btsocket_rfcomm_connect_ind(ng_btsocket_rfcomm_session_p s, int channel)
1146 ng_btsocket_rfcomm_pcb_p pcb = NULL, pcb1 = NULL;
1147 ng_btsocket_l2cap_pcb_p l2pcb = NULL;
1148 struct socket *so1 = NULL;
1150 mtx_assert(&s->session_mtx, MA_OWNED);
1153 * Try to find RFCOMM socket that listens on given source address
1154 * and channel. This will return the best possible match.
1157 l2pcb = so2l2cap_pcb(s->l2so);
1158 pcb = ng_btsocket_rfcomm_pcb_listener(&l2pcb->src, channel);
1163 * Check the pending connections queue and if we have space then
1164 * create new socket and set proper source and destination address,
1168 mtx_lock(&pcb->pcb_mtx);
1170 if (pcb->so->so_qlen <= pcb->so->so_qlimit)
1171 so1 = sonewconn(pcb->so, 0);
1173 mtx_unlock(&pcb->pcb_mtx);
1179 * If we got here than we have created new socket. So complete the
1180 * connection. Set source and destination address from the session.
1183 pcb1 = so2rfcomm_pcb(so1);
1185 panic("%s: pcb1 == NULL", __func__);
1187 mtx_lock(&pcb1->pcb_mtx);
1189 bcopy(&l2pcb->src, &pcb1->src, sizeof(pcb1->src));
1190 bcopy(&l2pcb->dst, &pcb1->dst, sizeof(pcb1->dst));
1191 pcb1->channel = channel;
1193 /* Link new DLC to the session. We already hold s->session_mtx */
1194 LIST_INSERT_HEAD(&s->dlcs, pcb1, session_next);
1197 mtx_unlock(&pcb1->pcb_mtx);
1200 } /* ng_btsocket_rfcomm_connect_ind */
1203 * Process RFCOMM connect confirmation. Caller must hold s->session_mtx.
1207 ng_btsocket_rfcomm_connect_cfm(ng_btsocket_rfcomm_session_p s)
1209 ng_btsocket_rfcomm_pcb_p pcb = NULL, pcb_next = NULL;
1212 mtx_assert(&s->session_mtx, MA_OWNED);
1215 * Wake up all waiting sockets and send PN request for each of them.
1216 * Note that timeout already been set in ng_btsocket_rfcomm_connect()
1218 * Note: cannot use LIST_FOREACH because ng_btsocket_rfcomm_pcb_kill
1219 * will unlink DLC from the session
1222 for (pcb = LIST_FIRST(&s->dlcs); pcb != NULL; ) {
1223 mtx_lock(&pcb->pcb_mtx);
1224 pcb_next = LIST_NEXT(pcb, session_next);
1226 if (pcb->state == NG_BTSOCKET_RFCOMM_DLC_W4_CONNECT) {
1228 bcopy(&so2l2cap_pcb(s->l2so)->src, &pcb->src,
1231 error = ng_btsocket_rfcomm_send_pn(pcb);
1233 pcb->state = NG_BTSOCKET_RFCOMM_DLC_CONFIGURING;
1235 ng_btsocket_rfcomm_pcb_kill(pcb, error);
1238 mtx_unlock(&pcb->pcb_mtx);
1241 } /* ng_btsocket_rfcomm_connect_cfm */
1243 /*****************************************************************************
1244 *****************************************************************************
1246 *****************************************************************************
1247 *****************************************************************************/
1250 * Create new RFCOMM session. That function WILL NOT take ownership over l2so.
1251 * Caller MUST free l2so if function failed.
1255 ng_btsocket_rfcomm_session_create(ng_btsocket_rfcomm_session_p *sp,
1256 struct socket *l2so, bdaddr_p src, bdaddr_p dst,
1259 ng_btsocket_rfcomm_session_p s = NULL;
1260 struct sockaddr_l2cap l2sa;
1261 struct sockopt l2sopt;
1265 mtx_assert(&ng_btsocket_rfcomm_sessions_mtx, MA_OWNED);
1267 /* Allocate the RFCOMM session */
1268 s = kmalloc(sizeof(*s), M_NETGRAPH_BTSOCKET_RFCOMM,
1269 M_WAITOK | M_NULLOK | M_ZERO);
1274 s->mtu = RFCOMM_DEFAULT_MTU;
1276 s->state = NG_BTSOCKET_RFCOMM_SESSION_CLOSED;
1277 NG_BT_MBUFQ_INIT(&s->outq, ifqmaxlen);
1280 * XXX Mark session mutex as DUPOK to prevent "duplicated lock of
1281 * the same type" message. When accepting new L2CAP connection
1282 * ng_btsocket_rfcomm_session_accept() holds both session mutexes
1283 * for "old" (accepting) session and "new" (created) session.
1286 mtx_init(&s->session_mtx, "btsocks_rfcomm_session_mtx", NULL,
1289 LIST_INIT(&s->dlcs);
1291 /* Prepare L2CAP socket */
1292 l2so->so_upcallarg = NULL;
1293 l2so->so_upcall = ng_btsocket_rfcomm_upcall;
1294 SOCKBUF_LOCK(&l2so->so_rcv);
1295 l2so->so_rcv.sb_flags |= SB_UPCALL;
1296 SOCKBUF_UNLOCK(&l2so->so_rcv);
1297 SOCKBUF_LOCK(&l2so->so_snd);
1298 l2so->so_snd.sb_flags |= SB_UPCALL;
1299 SOCKBUF_UNLOCK(&l2so->so_snd);
1300 sosetstate(l2so, SS_NBIO);
1303 mtx_lock(&s->session_mtx);
1306 * "src" == NULL and "dst" == NULL means just create session.
1307 * caller must do the rest
1310 if (src == NULL && dst == NULL)
1314 * Set incoming MTU on L2CAP socket. It is RFCOMM session default MTU
1315 * plus 5 bytes: RFCOMM frame header, one extra byte for length and one
1316 * extra byte for credits.
1319 mtu = s->mtu + sizeof(struct rfcomm_frame_hdr) + 1 + 1;
1321 l2sopt.sopt_dir = SOPT_SET;
1322 l2sopt.sopt_level = SOL_L2CAP;
1323 l2sopt.sopt_name = SO_L2CAP_IMTU;
1324 l2sopt.sopt_val = (void *) &mtu;
1325 l2sopt.sopt_valsize = sizeof(mtu);
1326 l2sopt.sopt_td = NULL;
1328 error = sosetopt(s->l2so, &l2sopt);
1332 /* Bind socket to "src" address */
1333 l2sa.l2cap_len = sizeof(l2sa);
1334 l2sa.l2cap_family = AF_BLUETOOTH;
1335 l2sa.l2cap_psm = (dst == NULL)? htole16(NG_L2CAP_PSM_RFCOMM) : 0;
1336 bcopy(src, &l2sa.l2cap_bdaddr, sizeof(l2sa.l2cap_bdaddr));
1338 error = sobind(s->l2so, (struct sockaddr *) &l2sa, td);
1342 /* If "dst" is not NULL then initiate connect(), otherwise listen() */
1345 s->state = NG_BTSOCKET_RFCOMM_SESSION_LISTENING;
1347 error = solisten(s->l2so, 10, td);
1351 s->flags = NG_BTSOCKET_RFCOMM_SESSION_INITIATOR;
1352 s->state = NG_BTSOCKET_RFCOMM_SESSION_CONNECTING;
1354 l2sa.l2cap_len = sizeof(l2sa);
1355 l2sa.l2cap_family = AF_BLUETOOTH;
1356 l2sa.l2cap_psm = htole16(NG_L2CAP_PSM_RFCOMM);
1357 bcopy(dst, &l2sa.l2cap_bdaddr, sizeof(l2sa.l2cap_bdaddr));
1359 error = soconnect(s->l2so, (struct sockaddr *) &l2sa, td, TRUE);
1365 LIST_INSERT_HEAD(&ng_btsocket_rfcomm_sessions, s, next);
1368 mtx_unlock(&s->session_mtx);
1373 mtx_unlock(&s->session_mtx);
1375 /* Return L2CAP socket back to its original state */
1376 l2so->so_upcallarg = NULL;
1377 l2so->so_upcall = NULL;
1378 SOCKBUF_LOCK(&l2so->so_rcv);
1379 l2so->so_rcv.sb_flags &= ~SB_UPCALL;
1380 SOCKBUF_UNLOCK(&l2so->so_rcv);
1381 SOCKBUF_LOCK(&l2so->so_snd);
1382 l2so->so_snd.sb_flags &= ~SB_UPCALL;
1383 SOCKBUF_UNLOCK(&l2so->so_snd);
1384 soclrstate(l2so, SS_NBIO);
1386 mtx_destroy(&s->session_mtx);
1387 bzero(s, sizeof(*s));
1388 kfree(s, M_NETGRAPH_BTSOCKET_RFCOMM);
1391 } /* ng_btsocket_rfcomm_session_create */
1394 * Process accept() on RFCOMM session
1395 * XXX FIXME locking for "l2so"?
1399 ng_btsocket_rfcomm_session_accept(ng_btsocket_rfcomm_session_p s0)
1401 struct socket *l2so = NULL;
1402 struct sockaddr_l2cap *l2sa = NULL;
1403 ng_btsocket_l2cap_pcb_t *l2pcb = NULL;
1404 ng_btsocket_rfcomm_session_p s = NULL;
1407 mtx_assert(&ng_btsocket_rfcomm_sessions_mtx, MA_OWNED);
1408 mtx_assert(&s0->session_mtx, MA_OWNED);
1410 /* Check if there is a complete L2CAP connection in the queue */
1411 if ((error = s0->l2so->so_error) != 0) {
1412 NG_BTSOCKET_RFCOMM_ERR(
1413 "%s: Could not accept connection on L2CAP socket, error=%d\n", __func__, error);
1414 s0->l2so->so_error = 0;
1420 if (TAILQ_EMPTY(&s0->l2so->so_comp)) {
1422 if (s0->l2so->so_rcv.sb_state & SBS_CANTRCVMORE)
1423 return (ECONNABORTED);
1424 return (EWOULDBLOCK);
1427 /* Accept incoming L2CAP connection */
1428 l2so = TAILQ_FIRST(&s0->l2so->so_comp);
1430 panic("%s: l2so == NULL", __func__);
1432 TAILQ_REMOVE(&s0->l2so->so_comp, l2so, so_list);
1433 s0->l2so->so_qlen --;
1434 l2so->so_qstate &= ~SQ_COMP;
1435 l2so->so_head = NULL;
1438 sosetstate(l2so, SS_NBIO);
1442 error = soaccept(l2so, (struct sockaddr **) &l2sa);
1444 NG_BTSOCKET_RFCOMM_ERR(
1445 "%s: soaccept() on L2CAP socket failed, error=%d\n", __func__, error);
1452 * Check if there is already active RFCOMM session between two devices.
1453 * If so then close L2CAP connection. We only support one RFCOMM session
1454 * between each pair of devices. Note that here we assume session in any
1455 * state. The session even could be in the middle of disconnecting.
1458 l2pcb = so2l2cap_pcb(l2so);
1459 s = ng_btsocket_rfcomm_session_by_addr(&l2pcb->src, &l2pcb->dst);
1461 /* Create a new RFCOMM session */
1462 error = ng_btsocket_rfcomm_session_create(&s, l2so, NULL, NULL,
1463 curthread /* XXX */);
1465 mtx_lock(&s->session_mtx);
1468 s->state = NG_BTSOCKET_RFCOMM_SESSION_CONNECTED;
1471 * Adjust MTU on incomming connection. Reserve 5 bytes:
1472 * RFCOMM frame header, one extra byte for length and
1473 * one extra byte for credits.
1476 s->mtu = min(l2pcb->imtu, l2pcb->omtu) -
1477 sizeof(struct rfcomm_frame_hdr) - 1 - 1;
1479 mtx_unlock(&s->session_mtx);
1481 NG_BTSOCKET_RFCOMM_ALERT(
1482 "%s: Failed to create new RFCOMM session, error=%d\n", __func__, error);
1487 NG_BTSOCKET_RFCOMM_WARN(
1488 "%s: Rejecting duplicating RFCOMM session between src=%x:%x:%x:%x:%x:%x and " \
1489 "dst=%x:%x:%x:%x:%x:%x, state=%d, flags=%#x\n", __func__,
1490 l2pcb->src.b[5], l2pcb->src.b[4], l2pcb->src.b[3],
1491 l2pcb->src.b[2], l2pcb->src.b[1], l2pcb->src.b[0],
1492 l2pcb->dst.b[5], l2pcb->dst.b[4], l2pcb->dst.b[3],
1493 l2pcb->dst.b[2], l2pcb->dst.b[1], l2pcb->dst.b[0],
1494 s->state, s->flags);
1501 } /* ng_btsocket_rfcomm_session_accept */
1504 * Process connect() on RFCOMM session
1505 * XXX FIXME locking for "l2so"?
1509 ng_btsocket_rfcomm_session_connect(ng_btsocket_rfcomm_session_p s)
1511 ng_btsocket_l2cap_pcb_p l2pcb = so2l2cap_pcb(s->l2so);
1514 mtx_assert(&s->session_mtx, MA_OWNED);
1516 /* First check if connection has failed */
1517 if ((error = s->l2so->so_error) != 0) {
1518 s->l2so->so_error = 0;
1520 NG_BTSOCKET_RFCOMM_ERR(
1521 "%s: Could not connect RFCOMM session, error=%d, state=%d, flags=%#x\n",
1522 __func__, error, s->state, s->flags);
1527 /* Is connection still in progress? */
1528 if (s->l2so->so_state & SS_ISCONNECTING)
1532 * If we got here then we are connected. Send SABM on DLCI 0 to
1533 * open multiplexor channel.
1537 s->state = NG_BTSOCKET_RFCOMM_SESSION_CONNECTED;
1540 * Adjust MTU on outgoing connection. Reserve 5 bytes: RFCOMM
1541 * frame header, one extra byte for length and one extra byte
1545 s->mtu = min(l2pcb->imtu, l2pcb->omtu) -
1546 sizeof(struct rfcomm_frame_hdr) - 1 - 1;
1548 error = ng_btsocket_rfcomm_send_command(s,RFCOMM_FRAME_SABM,0);
1550 error = ng_btsocket_rfcomm_task_wakeup();
1554 }/* ng_btsocket_rfcomm_session_connect */
1557 * Receive data on RFCOMM session
1558 * XXX FIXME locking for "l2so"?
1562 ng_btsocket_rfcomm_session_receive(ng_btsocket_rfcomm_session_p s)
1564 struct mbuf *m = NULL;
1566 int more, flags, error;
1568 mtx_assert(&s->session_mtx, MA_OWNED);
1570 /* Can we read from the L2CAP socket? */
1571 if (!soreadable(s->l2so))
1574 /* First check for error on L2CAP socket */
1575 if ((error = s->l2so->so_error) != 0) {
1576 s->l2so->so_error = 0;
1578 NG_BTSOCKET_RFCOMM_ERR(
1579 "%s: Could not receive data from L2CAP socket, error=%d, state=%d, flags=%#x\n",
1580 __func__, error, s->state, s->flags);
1586 * Read all packets from the L2CAP socket.
1587 * XXX FIXME/VERIFY is that correct? For now use m->m_nextpkt as
1588 * indication that there is more packets on the socket's buffer.
1589 * Also what should we use in uio.uio_resid?
1590 * May be s->mtu + sizeof(struct rfcomm_frame_hdr) + 1 + 1?
1593 for (more = 1; more; ) {
1594 /* Try to get next packet from socket */
1595 bzero(&uio, sizeof(uio));
1596 /* uio.uio_td = NULL; */
1597 uio.uio_resid = 1000000000;
1598 flags = MSG_DONTWAIT;
1601 error = soreceive(s->l2so, NULL, &uio, &m, NULL, &flags);
1603 if (error == EWOULDBLOCK)
1604 return (0); /* XXX can happen? */
1606 NG_BTSOCKET_RFCOMM_ERR(
1607 "%s: Could not receive data from L2CAP socket, error=%d\n", __func__, error);
1612 more = (m->m_nextpkt != NULL);
1613 m->m_nextpkt = NULL;
1615 ng_btsocket_rfcomm_receive_frame(s, m);
1619 } /* ng_btsocket_rfcomm_session_receive */
1622 * Send data on RFCOMM session
1623 * XXX FIXME locking for "l2so"?
1627 ng_btsocket_rfcomm_session_send(ng_btsocket_rfcomm_session_p s)
1629 struct mbuf *m = NULL;
1632 mtx_assert(&s->session_mtx, MA_OWNED);
1634 /* Send as much as we can from the session queue */
1635 while (sowriteable(s->l2so)) {
1636 /* Check if socket still OK */
1637 if ((error = s->l2so->so_error) != 0) {
1638 s->l2so->so_error = 0;
1640 NG_BTSOCKET_RFCOMM_ERR(
1641 "%s: Detected error=%d on L2CAP socket, state=%d, flags=%#x\n",
1642 __func__, error, s->state, s->flags);
1647 NG_BT_MBUFQ_DEQUEUE(&s->outq, m);
1649 return (0); /* we are done */
1651 /* Call send function on the L2CAP socket */
1652 error = (*s->l2so->so_proto->pr_usrreqs->pru_send)(s->l2so,
1653 0, m, NULL, NULL, curthread /* XXX */);
1655 NG_BTSOCKET_RFCOMM_ERR(
1656 "%s: Could not send data to L2CAP socket, error=%d\n", __func__, error);
1663 } /* ng_btsocket_rfcomm_session_send */
1666 * Close and disconnect all DLCs for the given session. Caller must hold
1667 * s->sesson_mtx. Will wakeup session.
1671 ng_btsocket_rfcomm_session_clean(ng_btsocket_rfcomm_session_p s)
1673 ng_btsocket_rfcomm_pcb_p pcb = NULL, pcb_next = NULL;
1676 mtx_assert(&s->session_mtx, MA_OWNED);
1679 * Note: cannot use LIST_FOREACH because ng_btsocket_rfcomm_pcb_kill
1680 * will unlink DLC from the session
1683 for (pcb = LIST_FIRST(&s->dlcs); pcb != NULL; ) {
1684 mtx_lock(&pcb->pcb_mtx);
1685 pcb_next = LIST_NEXT(pcb, session_next);
1687 NG_BTSOCKET_RFCOMM_INFO(
1688 "%s: Disconnecting dlci=%d, state=%d, flags=%#x\n",
1689 __func__, pcb->dlci, pcb->state, pcb->flags);
1691 if (pcb->state == NG_BTSOCKET_RFCOMM_DLC_CONNECTED)
1694 error = ECONNREFUSED;
1696 ng_btsocket_rfcomm_pcb_kill(pcb, error);
1698 mtx_unlock(&pcb->pcb_mtx);
1701 } /* ng_btsocket_rfcomm_session_clean */
1704 * Process all DLCs on the session. Caller MUST hold s->session_mtx.
1708 ng_btsocket_rfcomm_session_process_pcb(ng_btsocket_rfcomm_session_p s)
1710 ng_btsocket_rfcomm_pcb_p pcb = NULL, pcb_next = NULL;
1713 mtx_assert(&s->session_mtx, MA_OWNED);
1716 * Note: cannot use LIST_FOREACH because ng_btsocket_rfcomm_pcb_kill
1717 * will unlink DLC from the session
1720 for (pcb = LIST_FIRST(&s->dlcs); pcb != NULL; ) {
1721 mtx_lock(&pcb->pcb_mtx);
1722 pcb_next = LIST_NEXT(pcb, session_next);
1724 switch (pcb->state) {
1727 * If DLC in W4_CONNECT state then we should check for both
1728 * timeout and detach.
1731 case NG_BTSOCKET_RFCOMM_DLC_W4_CONNECT:
1732 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_DETACHED)
1733 ng_btsocket_rfcomm_pcb_kill(pcb, 0);
1734 else if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_TIMEDOUT)
1735 ng_btsocket_rfcomm_pcb_kill(pcb, ETIMEDOUT);
1739 * If DLC in CONFIGURING or CONNECTING state then we only
1740 * should check for timeout. If detach() was called then
1741 * DLC will be moved into DISCONNECTING state.
1744 case NG_BTSOCKET_RFCOMM_DLC_CONFIGURING:
1745 case NG_BTSOCKET_RFCOMM_DLC_CONNECTING:
1746 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_TIMEDOUT)
1747 ng_btsocket_rfcomm_pcb_kill(pcb, ETIMEDOUT);
1751 * If DLC in CONNECTED state then we need to send data (if any)
1752 * from the socket's send queue. Note that we will send data
1753 * from either all sockets or none. This may overload session's
1754 * outgoing queue (but we do not check for that).
1756 * XXX FIXME need scheduler for RFCOMM sockets
1759 case NG_BTSOCKET_RFCOMM_DLC_CONNECTED:
1760 error = ng_btsocket_rfcomm_pcb_send(pcb, ALOT);
1762 ng_btsocket_rfcomm_pcb_kill(pcb, error);
1766 * If DLC in DISCONNECTING state then we must send DISC frame.
1767 * Note that if DLC has timeout set then we do not need to
1768 * resend DISC frame.
1770 * XXX FIXME need to drain all data from the socket's queue
1771 * if LINGER option was set
1774 case NG_BTSOCKET_RFCOMM_DLC_DISCONNECTING:
1775 if (!(pcb->flags & NG_BTSOCKET_RFCOMM_DLC_TIMO)) {
1776 error = ng_btsocket_rfcomm_send_command(
1777 pcb->session, RFCOMM_FRAME_DISC,
1780 ng_btsocket_rfcomm_timeout(pcb);
1782 ng_btsocket_rfcomm_pcb_kill(pcb, error);
1783 } else if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_TIMEDOUT)
1784 ng_btsocket_rfcomm_pcb_kill(pcb, ETIMEDOUT);
1787 /* case NG_BTSOCKET_RFCOMM_DLC_CLOSED: */
1789 panic("%s: Invalid DLC state=%d, flags=%#x",
1790 __func__, pcb->state, pcb->flags);
1794 mtx_unlock(&pcb->pcb_mtx);
1797 } /* ng_btsocket_rfcomm_session_process_pcb */
1800 * Find RFCOMM session between "src" and "dst".
1801 * Caller MUST hold ng_btsocket_rfcomm_sessions_mtx.
1804 static ng_btsocket_rfcomm_session_p
1805 ng_btsocket_rfcomm_session_by_addr(bdaddr_p src, bdaddr_p dst)
1807 ng_btsocket_rfcomm_session_p s = NULL;
1808 ng_btsocket_l2cap_pcb_p l2pcb = NULL;
1811 mtx_assert(&ng_btsocket_rfcomm_sessions_mtx, MA_OWNED);
1813 any_src = (bcmp(src, NG_HCI_BDADDR_ANY, sizeof(*src)) == 0);
1815 LIST_FOREACH(s, &ng_btsocket_rfcomm_sessions, next) {
1816 l2pcb = so2l2cap_pcb(s->l2so);
1818 if ((any_src || bcmp(&l2pcb->src, src, sizeof(*src)) == 0) &&
1819 bcmp(&l2pcb->dst, dst, sizeof(*dst)) == 0)
1824 } /* ng_btsocket_rfcomm_session_by_addr */
1826 /*****************************************************************************
1827 *****************************************************************************
1829 *****************************************************************************
1830 *****************************************************************************/
1833 * Process incoming RFCOMM frame. Caller must hold s->session_mtx.
1834 * XXX FIXME check frame length
1838 ng_btsocket_rfcomm_receive_frame(ng_btsocket_rfcomm_session_p s,
1841 struct rfcomm_frame_hdr *hdr = NULL;
1842 struct mbuf *m = NULL;
1844 u_int8_t dlci, type;
1847 mtx_assert(&s->session_mtx, MA_OWNED);
1849 /* Pullup as much as we can into first mbuf (for direct access) */
1850 length = min(m0->m_pkthdr.len, MHLEN);
1851 if (m0->m_len < length) {
1852 if ((m0 = m_pullup(m0, length)) == NULL) {
1853 NG_BTSOCKET_RFCOMM_ALERT(
1854 "%s: m_pullup(%d) failed\n", __func__, length);
1860 hdr = mtod(m0, struct rfcomm_frame_hdr *);
1861 dlci = RFCOMM_DLCI(hdr->address);
1862 type = RFCOMM_TYPE(hdr->control);
1864 /* Test EA bit in length. If not set then we have 2 bytes of length */
1865 if (!RFCOMM_EA(hdr->length)) {
1866 bcopy(&hdr->length, &length, sizeof(length));
1867 length = le16toh(length) >> 1;
1868 m_adj(m0, sizeof(*hdr) + 1);
1870 length = hdr->length >> 1;
1871 m_adj(m0, sizeof(*hdr));
1874 NG_BTSOCKET_RFCOMM_INFO(
1875 "%s: Got frame type=%#x, dlci=%d, length=%d, cr=%d, pf=%d, len=%d\n",
1876 __func__, type, dlci, length, RFCOMM_CR(hdr->address),
1877 RFCOMM_PF(hdr->control), m0->m_pkthdr.len);
1880 * Get FCS (the last byte in the frame)
1881 * XXX this will not work if mbuf chain ends with empty mbuf.
1882 * XXX let's hope it never happens :)
1885 for (m = m0; m->m_next != NULL; m = m->m_next)
1888 panic("%s: Empty mbuf at the end of the chain, len=%d",
1889 __func__, m->m_len);
1892 * Check FCS. We only need to calculate FCS on first 2 or 3 bytes
1893 * and already m_pullup'ed mbuf chain, so it should be safe.
1896 if (ng_btsocket_rfcomm_check_fcs((u_int8_t *) hdr, type, m->m_data[m->m_len - 1])) {
1897 NG_BTSOCKET_RFCOMM_ERR(
1898 "%s: Invalid RFCOMM packet. Bad checksum\n", __func__);
1904 m_adj(m0, -1); /* Trim FCS byte */
1907 * Process RFCOMM frame.
1909 * From TS 07.10 spec
1911 * "... In the case where a SABM or DISC command with the P bit set
1912 * to 0 is received then the received frame shall be discarded..."
1914 * "... If a unsolicited DM response is received then the frame shall
1915 * be processed irrespective of the P/F setting... "
1917 * "... The station may transmit response frames with the F bit set
1918 * to 0 at any opportunity on an asynchronous basis. However, in the
1919 * case where a UA response is received with the F bit set to 0 then
1920 * the received frame shall be discarded..."
1922 * From Bluetooth spec
1924 * "... When credit based flow control is being used, the meaning of
1925 * the P/F bit in the control field of the RFCOMM header is redefined
1926 * for UIH frames..."
1930 case RFCOMM_FRAME_SABM:
1931 if (RFCOMM_PF(hdr->control))
1932 error = ng_btsocket_rfcomm_receive_sabm(s, dlci);
1935 case RFCOMM_FRAME_DISC:
1936 if (RFCOMM_PF(hdr->control))
1937 error = ng_btsocket_rfcomm_receive_disc(s, dlci);
1940 case RFCOMM_FRAME_UA:
1941 if (RFCOMM_PF(hdr->control))
1942 error = ng_btsocket_rfcomm_receive_ua(s, dlci);
1945 case RFCOMM_FRAME_DM:
1946 error = ng_btsocket_rfcomm_receive_dm(s, dlci);
1949 case RFCOMM_FRAME_UIH:
1951 error = ng_btsocket_rfcomm_receive_mcc(s, m0);
1953 error = ng_btsocket_rfcomm_receive_uih(s, dlci,
1954 RFCOMM_PF(hdr->control), m0);
1960 NG_BTSOCKET_RFCOMM_ERR(
1961 "%s: Invalid RFCOMM packet. Unknown type=%#x\n", __func__, type);
1969 } /* ng_btsocket_rfcomm_receive_frame */
1972 * Process RFCOMM SABM frame
1976 ng_btsocket_rfcomm_receive_sabm(ng_btsocket_rfcomm_session_p s, int dlci)
1978 ng_btsocket_rfcomm_pcb_p pcb = NULL;
1981 mtx_assert(&s->session_mtx, MA_OWNED);
1983 NG_BTSOCKET_RFCOMM_INFO(
1984 "%s: Got SABM, session state=%d, flags=%#x, mtu=%d, dlci=%d\n",
1985 __func__, s->state, s->flags, s->mtu, dlci);
1987 /* DLCI == 0 means open multiplexor channel */
1990 case NG_BTSOCKET_RFCOMM_SESSION_CONNECTED:
1991 case NG_BTSOCKET_RFCOMM_SESSION_OPEN:
1992 error = ng_btsocket_rfcomm_send_command(s,
1993 RFCOMM_FRAME_UA, dlci);
1995 s->state = NG_BTSOCKET_RFCOMM_SESSION_OPEN;
1996 ng_btsocket_rfcomm_connect_cfm(s);
1998 s->state = NG_BTSOCKET_RFCOMM_SESSION_CLOSED;
1999 ng_btsocket_rfcomm_session_clean(s);
2004 NG_BTSOCKET_RFCOMM_WARN(
2005 "%s: Got SABM for session in invalid state state=%d, flags=%#x\n",
2006 __func__, s->state, s->flags);
2014 /* Make sure multiplexor channel is open */
2015 if (s->state != NG_BTSOCKET_RFCOMM_SESSION_OPEN) {
2016 NG_BTSOCKET_RFCOMM_ERR(
2017 "%s: Got SABM for dlci=%d with mulitplexor channel closed, state=%d, " \
2018 "flags=%#x\n", __func__, dlci, s->state, s->flags);
2024 * Check if we have this DLCI. This might happen when remote
2025 * peer uses PN command before actual open (SABM) happens.
2028 pcb = ng_btsocket_rfcomm_pcb_by_dlci(s, dlci);
2030 mtx_lock(&pcb->pcb_mtx);
2032 if (pcb->state != NG_BTSOCKET_RFCOMM_DLC_CONNECTING) {
2033 NG_BTSOCKET_RFCOMM_ERR(
2034 "%s: Got SABM for dlci=%d in invalid state=%d, flags=%#x\n",
2035 __func__, dlci, pcb->state, pcb->flags);
2036 mtx_unlock(&pcb->pcb_mtx);
2041 ng_btsocket_rfcomm_untimeout(pcb);
2043 error = ng_btsocket_rfcomm_send_command(s,RFCOMM_FRAME_UA,dlci);
2045 error = ng_btsocket_rfcomm_send_msc(pcb);
2048 pcb->state = NG_BTSOCKET_RFCOMM_DLC_CONNECTED;
2049 soisconnected(pcb->so);
2051 ng_btsocket_rfcomm_pcb_kill(pcb, error);
2053 mtx_unlock(&pcb->pcb_mtx);
2059 * We do not have requested DLCI, so it must be an incoming connection
2060 * with default parameters. Try to accept it.
2063 pcb = ng_btsocket_rfcomm_connect_ind(s, RFCOMM_SRVCHANNEL(dlci));
2065 mtx_lock(&pcb->pcb_mtx);
2069 error = ng_btsocket_rfcomm_send_command(s,RFCOMM_FRAME_UA,dlci);
2071 error = ng_btsocket_rfcomm_send_msc(pcb);
2074 pcb->state = NG_BTSOCKET_RFCOMM_DLC_CONNECTED;
2075 soisconnected(pcb->so);
2077 ng_btsocket_rfcomm_pcb_kill(pcb, error);
2079 mtx_unlock(&pcb->pcb_mtx);
2081 /* Nobody is listen()ing on the requested DLCI */
2082 error = ng_btsocket_rfcomm_send_command(s,RFCOMM_FRAME_DM,dlci);
2085 } /* ng_btsocket_rfcomm_receive_sabm */
2088 * Process RFCOMM DISC frame
2092 ng_btsocket_rfcomm_receive_disc(ng_btsocket_rfcomm_session_p s, int dlci)
2094 ng_btsocket_rfcomm_pcb_p pcb = NULL;
2097 mtx_assert(&s->session_mtx, MA_OWNED);
2099 NG_BTSOCKET_RFCOMM_INFO(
2100 "%s: Got DISC, session state=%d, flags=%#x, mtu=%d, dlci=%d\n",
2101 __func__, s->state, s->flags, s->mtu, dlci);
2103 /* DLCI == 0 means close multiplexor channel */
2105 /* XXX FIXME assume that remote side will close the socket */
2106 error = ng_btsocket_rfcomm_send_command(s, RFCOMM_FRAME_UA, 0);
2108 if (s->state == NG_BTSOCKET_RFCOMM_SESSION_DISCONNECTING)
2109 s->state = NG_BTSOCKET_RFCOMM_SESSION_CLOSED; /* XXX */
2111 s->state = NG_BTSOCKET_RFCOMM_SESSION_DISCONNECTING;
2113 s->state = NG_BTSOCKET_RFCOMM_SESSION_CLOSED; /* XXX */
2115 ng_btsocket_rfcomm_session_clean(s);
2117 pcb = ng_btsocket_rfcomm_pcb_by_dlci(s, dlci);
2121 mtx_lock(&pcb->pcb_mtx);
2123 NG_BTSOCKET_RFCOMM_INFO(
2124 "%s: Got DISC for dlci=%d, state=%d, flags=%#x\n",
2125 __func__, dlci, pcb->state, pcb->flags);
2127 error = ng_btsocket_rfcomm_send_command(s,
2128 RFCOMM_FRAME_UA, dlci);
2130 if (pcb->state == NG_BTSOCKET_RFCOMM_DLC_CONNECTED)
2135 ng_btsocket_rfcomm_pcb_kill(pcb, err);
2137 mtx_unlock(&pcb->pcb_mtx);
2139 NG_BTSOCKET_RFCOMM_WARN(
2140 "%s: Got DISC for non-existing dlci=%d\n", __func__, dlci);
2142 error = ng_btsocket_rfcomm_send_command(s,
2143 RFCOMM_FRAME_DM, dlci);
2148 } /* ng_btsocket_rfcomm_receive_disc */
2151 * Process RFCOMM UA frame
2155 ng_btsocket_rfcomm_receive_ua(ng_btsocket_rfcomm_session_p s, int dlci)
2157 ng_btsocket_rfcomm_pcb_p pcb = NULL;
2160 mtx_assert(&s->session_mtx, MA_OWNED);
2162 NG_BTSOCKET_RFCOMM_INFO(
2163 "%s: Got UA, session state=%d, flags=%#x, mtu=%d, dlci=%d\n",
2164 __func__, s->state, s->flags, s->mtu, dlci);
2166 /* dlci == 0 means multiplexor channel */
2169 case NG_BTSOCKET_RFCOMM_SESSION_CONNECTED:
2170 s->state = NG_BTSOCKET_RFCOMM_SESSION_OPEN;
2171 ng_btsocket_rfcomm_connect_cfm(s);
2174 case NG_BTSOCKET_RFCOMM_SESSION_DISCONNECTING:
2175 s->state = NG_BTSOCKET_RFCOMM_SESSION_CLOSED;
2176 ng_btsocket_rfcomm_session_clean(s);
2180 NG_BTSOCKET_RFCOMM_WARN(
2181 "%s: Got UA for session in invalid state=%d(%d), flags=%#x, mtu=%d\n",
2182 __func__, s->state, INITIATOR(s), s->flags,
2191 /* Check if we have this DLCI */
2192 pcb = ng_btsocket_rfcomm_pcb_by_dlci(s, dlci);
2194 mtx_lock(&pcb->pcb_mtx);
2196 NG_BTSOCKET_RFCOMM_INFO(
2197 "%s: Got UA for dlci=%d, state=%d, flags=%#x\n",
2198 __func__, dlci, pcb->state, pcb->flags);
2200 switch (pcb->state) {
2201 case NG_BTSOCKET_RFCOMM_DLC_CONNECTING:
2202 ng_btsocket_rfcomm_untimeout(pcb);
2204 error = ng_btsocket_rfcomm_send_msc(pcb);
2206 pcb->state = NG_BTSOCKET_RFCOMM_DLC_CONNECTED;
2207 soisconnected(pcb->so);
2211 case NG_BTSOCKET_RFCOMM_DLC_DISCONNECTING:
2212 ng_btsocket_rfcomm_pcb_kill(pcb, 0);
2216 NG_BTSOCKET_RFCOMM_WARN(
2217 "%s: Got UA for dlci=%d in invalid state=%d, flags=%#x\n",
2218 __func__, dlci, pcb->state, pcb->flags);
2223 mtx_unlock(&pcb->pcb_mtx);
2225 NG_BTSOCKET_RFCOMM_WARN(
2226 "%s: Got UA for non-existing dlci=%d\n", __func__, dlci);
2228 error = ng_btsocket_rfcomm_send_command(s,RFCOMM_FRAME_DM,dlci);
2232 } /* ng_btsocket_rfcomm_receive_ua */
2235 * Process RFCOMM DM frame
2239 ng_btsocket_rfcomm_receive_dm(ng_btsocket_rfcomm_session_p s, int dlci)
2241 ng_btsocket_rfcomm_pcb_p pcb = NULL;
2244 mtx_assert(&s->session_mtx, MA_OWNED);
2246 NG_BTSOCKET_RFCOMM_INFO(
2247 "%s: Got DM, session state=%d, flags=%#x, mtu=%d, dlci=%d\n",
2248 __func__, s->state, s->flags, s->mtu, dlci);
2250 /* DLCI == 0 means multiplexor channel */
2252 /* Disconnect all dlc's on the session */
2253 s->state = NG_BTSOCKET_RFCOMM_SESSION_CLOSED;
2254 ng_btsocket_rfcomm_session_clean(s);
2256 pcb = ng_btsocket_rfcomm_pcb_by_dlci(s, dlci);
2258 mtx_lock(&pcb->pcb_mtx);
2260 NG_BTSOCKET_RFCOMM_INFO(
2261 "%s: Got DM for dlci=%d, state=%d, flags=%#x\n",
2262 __func__, dlci, pcb->state, pcb->flags);
2264 if (pcb->state == NG_BTSOCKET_RFCOMM_DLC_CONNECTED)
2267 error = ECONNREFUSED;
2269 ng_btsocket_rfcomm_pcb_kill(pcb, error);
2271 mtx_unlock(&pcb->pcb_mtx);
2273 NG_BTSOCKET_RFCOMM_WARN(
2274 "%s: Got DM for non-existing dlci=%d\n", __func__, dlci);
2278 } /* ng_btsocket_rfcomm_receive_dm */
2281 * Process RFCOMM UIH frame (data)
2285 ng_btsocket_rfcomm_receive_uih(ng_btsocket_rfcomm_session_p s, int dlci,
2286 int pf, struct mbuf *m0)
2288 ng_btsocket_rfcomm_pcb_p pcb = NULL;
2291 mtx_assert(&s->session_mtx, MA_OWNED);
2293 NG_BTSOCKET_RFCOMM_INFO(
2294 "%s: Got UIH, session state=%d, flags=%#x, mtu=%d, dlci=%d, pf=%d, len=%d\n",
2295 __func__, s->state, s->flags, s->mtu, dlci, pf,
2298 /* XXX should we do it here? Check for session flow control */
2299 if (s->flags & NG_BTSOCKET_RFCOMM_SESSION_LFC) {
2300 NG_BTSOCKET_RFCOMM_WARN(
2301 "%s: Got UIH with session flow control asserted, state=%d, flags=%#x\n",
2302 __func__, s->state, s->flags);
2306 /* Check if we have this dlci */
2307 pcb = ng_btsocket_rfcomm_pcb_by_dlci(s, dlci);
2309 NG_BTSOCKET_RFCOMM_WARN(
2310 "%s: Got UIH for non-existing dlci=%d\n", __func__, dlci);
2311 error = ng_btsocket_rfcomm_send_command(s,RFCOMM_FRAME_DM,dlci);
2315 mtx_lock(&pcb->pcb_mtx);
2317 /* Check dlci state */
2318 if (pcb->state != NG_BTSOCKET_RFCOMM_DLC_CONNECTED) {
2319 NG_BTSOCKET_RFCOMM_WARN(
2320 "%s: Got UIH for dlci=%d in invalid state=%d, flags=%#x\n",
2321 __func__, dlci, pcb->state, pcb->flags);
2326 /* Check dlci flow control */
2327 if (((pcb->flags & NG_BTSOCKET_RFCOMM_DLC_CFC) && pcb->rx_cred <= 0) ||
2328 (pcb->lmodem & RFCOMM_MODEM_FC)) {
2329 NG_BTSOCKET_RFCOMM_ERR(
2330 "%s: Got UIH for dlci=%d with asserted flow control, state=%d, " \
2331 "flags=%#x, rx_cred=%d, lmodem=%#x\n",
2332 __func__, dlci, pcb->state, pcb->flags,
2333 pcb->rx_cred, pcb->lmodem);
2337 /* Did we get any credits? */
2338 if ((pcb->flags & NG_BTSOCKET_RFCOMM_DLC_CFC) && pf) {
2339 NG_BTSOCKET_RFCOMM_INFO(
2340 "%s: Got %d more credits for dlci=%d, state=%d, flags=%#x, " \
2341 "rx_cred=%d, tx_cred=%d\n",
2342 __func__, *mtod(m0, u_int8_t *), dlci, pcb->state,
2343 pcb->flags, pcb->rx_cred, pcb->tx_cred);
2345 pcb->tx_cred += *mtod(m0, u_int8_t *);
2348 /* Send more from the DLC. XXX check for errors? */
2349 ng_btsocket_rfcomm_pcb_send(pcb, ALOT);
2352 /* OK the of the rest of the mbuf is the data */
2353 if (m0->m_pkthdr.len > 0) {
2354 /* If we are using credit flow control decrease rx_cred here */
2355 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_CFC) {
2356 /* Give remote peer more credits (if needed) */
2357 if (-- pcb->rx_cred <= RFCOMM_MAX_CREDITS / 2)
2358 ng_btsocket_rfcomm_send_credits(pcb);
2360 NG_BTSOCKET_RFCOMM_INFO(
2361 "%s: Remote side still has credits, dlci=%d, state=%d, flags=%#x, " \
2362 "rx_cred=%d, tx_cred=%d\n", __func__, dlci, pcb->state, pcb->flags,
2363 pcb->rx_cred, pcb->tx_cred);
2366 /* Check packet against mtu on dlci */
2367 if (m0->m_pkthdr.len > pcb->mtu) {
2368 NG_BTSOCKET_RFCOMM_ERR(
2369 "%s: Got oversized UIH for dlci=%d, state=%d, flags=%#x, mtu=%d, len=%d\n",
2370 __func__, dlci, pcb->state, pcb->flags,
2371 pcb->mtu, m0->m_pkthdr.len);
2374 } else if (m0->m_pkthdr.len > sbspace(&pcb->so->so_rcv)) {
2377 * This is really bad. Receive queue on socket does
2378 * not have enough space for the packet. We do not
2379 * have any other choice but drop the packet.
2382 NG_BTSOCKET_RFCOMM_ERR(
2383 "%s: Not enough space in socket receive queue. Dropping UIH for dlci=%d, " \
2384 "state=%d, flags=%#x, len=%d, space=%ld\n",
2385 __func__, dlci, pcb->state, pcb->flags,
2386 m0->m_pkthdr.len, sbspace(&pcb->so->so_rcv));
2390 /* Append packet to the socket receive queue */
2391 sbappend(&pcb->so->so_rcv, m0);
2398 mtx_unlock(&pcb->pcb_mtx);
2400 NG_FREE_M(m0); /* checks for != NULL */
2403 } /* ng_btsocket_rfcomm_receive_uih */
2406 * Process RFCOMM MCC command (Multiplexor)
2408 * From TS 07.10 spec
2410 * "5.4.3.1 Information Data
2412 * ...The frames (UIH) sent by the initiating station have the C/R bit set
2413 * to 1 and those sent by the responding station have the C/R bit set to 0..."
2415 * "5.4.6.2 Operating procedures
2417 * Messages always exist in pairs; a command message and a corresponding
2418 * response message. If the C/R bit is set to 1 the message is a command,
2419 * if it is set to 0 the message is a response...
2423 * NOTE: Notice that when UIH frames are used to convey information on DLCI 0
2424 * there are at least two different fields that contain a C/R bit, and the
2425 * bits are set of different form. The C/R bit in the Type field shall be set
2426 * as it is stated above, while the C/R bit in the Address field (see subclause
2427 * 5.2.1.2) shall be set as it is described in subclause 5.4.3.1."
2431 ng_btsocket_rfcomm_receive_mcc(ng_btsocket_rfcomm_session_p s, struct mbuf *m0)
2433 struct rfcomm_mcc_hdr *hdr = NULL;
2434 u_int8_t cr, type, length;
2436 mtx_assert(&s->session_mtx, MA_OWNED);
2439 * We can access data directly in the first mbuf, because we have
2440 * m_pullup()'ed mbuf chain in ng_btsocket_rfcomm_receive_frame().
2441 * All MCC commands should fit into single mbuf (except probably TEST).
2444 hdr = mtod(m0, struct rfcomm_mcc_hdr *);
2445 cr = RFCOMM_CR(hdr->type);
2446 type = RFCOMM_MCC_TYPE(hdr->type);
2447 length = RFCOMM_MCC_LENGTH(hdr->length);
2449 /* Check MCC frame length */
2450 if (sizeof(*hdr) + length != m0->m_pkthdr.len) {
2451 NG_BTSOCKET_RFCOMM_ERR(
2452 "%s: Invalid MCC frame length=%d, len=%d\n",
2453 __func__, length, m0->m_pkthdr.len);
2460 case RFCOMM_MCC_TEST:
2461 return (ng_btsocket_rfcomm_receive_test(s, m0));
2464 case RFCOMM_MCC_FCON:
2465 case RFCOMM_MCC_FCOFF:
2466 return (ng_btsocket_rfcomm_receive_fc(s, m0));
2469 case RFCOMM_MCC_MSC:
2470 return (ng_btsocket_rfcomm_receive_msc(s, m0));
2473 case RFCOMM_MCC_RPN:
2474 return (ng_btsocket_rfcomm_receive_rpn(s, m0));
2477 case RFCOMM_MCC_RLS:
2478 return (ng_btsocket_rfcomm_receive_rls(s, m0));
2482 return (ng_btsocket_rfcomm_receive_pn(s, m0));
2485 case RFCOMM_MCC_NSC:
2486 NG_BTSOCKET_RFCOMM_ERR(
2487 "%s: Got MCC NSC, type=%#x, cr=%d, length=%d, session state=%d, flags=%#x, " \
2488 "mtu=%d, len=%d\n", __func__, RFCOMM_MCC_TYPE(*((u_int8_t *)(hdr + 1))), cr,
2489 length, s->state, s->flags, s->mtu, m0->m_pkthdr.len);
2494 NG_BTSOCKET_RFCOMM_ERR(
2495 "%s: Got unknown MCC, type=%#x, cr=%d, length=%d, session state=%d, " \
2496 "flags=%#x, mtu=%d, len=%d\n",
2497 __func__, type, cr, length, s->state, s->flags,
2498 s->mtu, m0->m_pkthdr.len);
2500 /* Reuse mbuf to send NSC */
2501 hdr = mtod(m0, struct rfcomm_mcc_hdr *);
2502 m0->m_pkthdr.len = m0->m_len = sizeof(*hdr);
2504 /* Create MCC NSC header */
2505 hdr->type = RFCOMM_MKMCC_TYPE(0, RFCOMM_MCC_NSC);
2506 hdr->length = RFCOMM_MKLEN8(1);
2508 /* Put back MCC command type we did not like */
2509 m0->m_data[m0->m_len] = RFCOMM_MKMCC_TYPE(cr, type);
2510 m0->m_pkthdr.len ++;
2513 /* Send UIH frame */
2514 return (ng_btsocket_rfcomm_send_uih(s,
2515 RFCOMM_MKADDRESS(INITIATOR(s), 0), 0, 0, m0));
2520 } /* ng_btsocket_rfcomm_receive_mcc */
2523 * Receive RFCOMM TEST MCC command
2527 ng_btsocket_rfcomm_receive_test(ng_btsocket_rfcomm_session_p s, struct mbuf *m0)
2529 struct rfcomm_mcc_hdr *hdr = mtod(m0, struct rfcomm_mcc_hdr *);
2532 mtx_assert(&s->session_mtx, MA_OWNED);
2534 NG_BTSOCKET_RFCOMM_INFO(
2535 "%s: Got MCC TEST, cr=%d, length=%d, session state=%d, flags=%#x, mtu=%d, " \
2536 "len=%d\n", __func__, RFCOMM_CR(hdr->type), RFCOMM_MCC_LENGTH(hdr->length),
2537 s->state, s->flags, s->mtu, m0->m_pkthdr.len);
2539 if (RFCOMM_CR(hdr->type)) {
2540 hdr->type = RFCOMM_MKMCC_TYPE(0, RFCOMM_MCC_TEST);
2541 error = ng_btsocket_rfcomm_send_uih(s,
2542 RFCOMM_MKADDRESS(INITIATOR(s), 0), 0, 0, m0);
2544 NG_FREE_M(m0); /* XXX ignore response */
2547 } /* ng_btsocket_rfcomm_receive_test */
2550 * Receive RFCOMM FCON/FCOFF MCC command
2554 ng_btsocket_rfcomm_receive_fc(ng_btsocket_rfcomm_session_p s, struct mbuf *m0)
2556 struct rfcomm_mcc_hdr *hdr = mtod(m0, struct rfcomm_mcc_hdr *);
2557 u_int8_t type = RFCOMM_MCC_TYPE(hdr->type);
2560 mtx_assert(&s->session_mtx, MA_OWNED);
2563 * Turn ON/OFF aggregate flow on the entire session. When remote peer
2564 * asserted flow control no transmission shall occur except on dlci 0
2565 * (control channel).
2568 NG_BTSOCKET_RFCOMM_INFO(
2569 "%s: Got MCC FC%s, cr=%d, length=%d, session state=%d, flags=%#x, mtu=%d, " \
2570 "len=%d\n", __func__, (type == RFCOMM_MCC_FCON)? "ON" : "OFF",
2571 RFCOMM_CR(hdr->type), RFCOMM_MCC_LENGTH(hdr->length),
2572 s->state, s->flags, s->mtu, m0->m_pkthdr.len);
2574 if (RFCOMM_CR(hdr->type)) {
2575 if (type == RFCOMM_MCC_FCON)
2576 s->flags &= ~NG_BTSOCKET_RFCOMM_SESSION_RFC;
2578 s->flags |= NG_BTSOCKET_RFCOMM_SESSION_RFC;
2580 hdr->type = RFCOMM_MKMCC_TYPE(0, type);
2581 error = ng_btsocket_rfcomm_send_uih(s,
2582 RFCOMM_MKADDRESS(INITIATOR(s), 0), 0, 0, m0);
2584 NG_FREE_M(m0); /* XXX ignore response */
2587 } /* ng_btsocket_rfcomm_receive_fc */
2590 * Receive RFCOMM MSC MCC command
2594 ng_btsocket_rfcomm_receive_msc(ng_btsocket_rfcomm_session_p s, struct mbuf *m0)
2596 struct rfcomm_mcc_hdr *hdr = mtod(m0, struct rfcomm_mcc_hdr*);
2597 struct rfcomm_mcc_msc *msc = (struct rfcomm_mcc_msc *)(hdr+1);
2598 ng_btsocket_rfcomm_pcb_t *pcb = NULL;
2601 mtx_assert(&s->session_mtx, MA_OWNED);
2603 NG_BTSOCKET_RFCOMM_INFO(
2604 "%s: Got MCC MSC, dlci=%d, cr=%d, length=%d, session state=%d, flags=%#x, " \
2606 __func__, RFCOMM_DLCI(msc->address), RFCOMM_CR(hdr->type),
2607 RFCOMM_MCC_LENGTH(hdr->length), s->state, s->flags,
2608 s->mtu, m0->m_pkthdr.len);
2610 if (RFCOMM_CR(hdr->type)) {
2611 pcb = ng_btsocket_rfcomm_pcb_by_dlci(s, RFCOMM_DLCI(msc->address));
2613 NG_BTSOCKET_RFCOMM_WARN(
2614 "%s: Got MSC command for non-existing dlci=%d\n",
2615 __func__, RFCOMM_DLCI(msc->address));
2621 mtx_lock(&pcb->pcb_mtx);
2623 if (pcb->state != NG_BTSOCKET_RFCOMM_DLC_CONNECTING &&
2624 pcb->state != NG_BTSOCKET_RFCOMM_DLC_CONNECTED) {
2625 NG_BTSOCKET_RFCOMM_WARN(
2626 "%s: Got MSC on dlci=%d in invalid state=%d\n",
2627 __func__, RFCOMM_DLCI(msc->address),
2630 mtx_unlock(&pcb->pcb_mtx);
2636 pcb->rmodem = msc->modem; /* Update remote port signals */
2638 hdr->type = RFCOMM_MKMCC_TYPE(0, RFCOMM_MCC_MSC);
2639 error = ng_btsocket_rfcomm_send_uih(s,
2640 RFCOMM_MKADDRESS(INITIATOR(s), 0), 0, 0, m0);
2643 /* Send more data from DLC. XXX check for errors? */
2644 if (!(pcb->rmodem & RFCOMM_MODEM_FC) &&
2645 !(pcb->flags & NG_BTSOCKET_RFCOMM_DLC_CFC))
2646 ng_btsocket_rfcomm_pcb_send(pcb, ALOT);
2649 mtx_unlock(&pcb->pcb_mtx);
2651 NG_FREE_M(m0); /* XXX ignore response */
2654 } /* ng_btsocket_rfcomm_receive_msc */
2657 * Receive RFCOMM RPN MCC command
2658 * XXX FIXME do we need htole16/le16toh for RPN param_mask?
2662 ng_btsocket_rfcomm_receive_rpn(ng_btsocket_rfcomm_session_p s, struct mbuf *m0)
2664 struct rfcomm_mcc_hdr *hdr = mtod(m0, struct rfcomm_mcc_hdr *);
2665 struct rfcomm_mcc_rpn *rpn = (struct rfcomm_mcc_rpn *)(hdr + 1);
2667 u_int16_t param_mask;
2668 u_int8_t bit_rate, data_bits, stop_bits, parity,
2669 flow_control, xon_char, xoff_char;
2671 mtx_assert(&s->session_mtx, MA_OWNED);
2673 NG_BTSOCKET_RFCOMM_INFO(
2674 "%s: Got MCC RPN, dlci=%d, cr=%d, length=%d, session state=%d, flags=%#x, " \
2676 __func__, RFCOMM_DLCI(rpn->dlci), RFCOMM_CR(hdr->type),
2677 RFCOMM_MCC_LENGTH(hdr->length), s->state, s->flags,
2678 s->mtu, m0->m_pkthdr.len);
2680 if (RFCOMM_CR(hdr->type)) {
2681 param_mask = RFCOMM_RPN_PM_ALL;
2683 if (RFCOMM_MCC_LENGTH(hdr->length) == 1) {
2684 /* Request - return default setting */
2685 bit_rate = RFCOMM_RPN_BR_115200;
2686 data_bits = RFCOMM_RPN_DATA_8;
2687 stop_bits = RFCOMM_RPN_STOP_1;
2688 parity = RFCOMM_RPN_PARITY_NONE;
2689 flow_control = RFCOMM_RPN_FLOW_NONE;
2690 xon_char = RFCOMM_RPN_XON_CHAR;
2691 xoff_char = RFCOMM_RPN_XOFF_CHAR;
2694 * Ignore/accept bit_rate, 8 bits, 1 stop bit, no
2695 * parity, no flow control lines, default XON/XOFF
2699 bit_rate = rpn->bit_rate;
2700 rpn->param_mask = le16toh(rpn->param_mask); /* XXX */
2702 data_bits = RFCOMM_RPN_DATA_BITS(rpn->line_settings);
2703 if (rpn->param_mask & RFCOMM_RPN_PM_DATA &&
2704 data_bits != RFCOMM_RPN_DATA_8) {
2705 data_bits = RFCOMM_RPN_DATA_8;
2706 param_mask ^= RFCOMM_RPN_PM_DATA;
2709 stop_bits = RFCOMM_RPN_STOP_BITS(rpn->line_settings);
2710 if (rpn->param_mask & RFCOMM_RPN_PM_STOP &&
2711 stop_bits != RFCOMM_RPN_STOP_1) {
2712 stop_bits = RFCOMM_RPN_STOP_1;
2713 param_mask ^= RFCOMM_RPN_PM_STOP;
2716 parity = RFCOMM_RPN_PARITY(rpn->line_settings);
2717 if (rpn->param_mask & RFCOMM_RPN_PM_PARITY &&
2718 parity != RFCOMM_RPN_PARITY_NONE) {
2719 parity = RFCOMM_RPN_PARITY_NONE;
2720 param_mask ^= RFCOMM_RPN_PM_PARITY;
2723 flow_control = rpn->flow_control;
2724 if (rpn->param_mask & RFCOMM_RPN_PM_FLOW &&
2725 flow_control != RFCOMM_RPN_FLOW_NONE) {
2726 flow_control = RFCOMM_RPN_FLOW_NONE;
2727 param_mask ^= RFCOMM_RPN_PM_FLOW;
2730 xon_char = rpn->xon_char;
2731 if (rpn->param_mask & RFCOMM_RPN_PM_XON &&
2732 xon_char != RFCOMM_RPN_XON_CHAR) {
2733 xon_char = RFCOMM_RPN_XON_CHAR;
2734 param_mask ^= RFCOMM_RPN_PM_XON;
2737 xoff_char = rpn->xoff_char;
2738 if (rpn->param_mask & RFCOMM_RPN_PM_XOFF &&
2739 xoff_char != RFCOMM_RPN_XOFF_CHAR) {
2740 xoff_char = RFCOMM_RPN_XOFF_CHAR;
2741 param_mask ^= RFCOMM_RPN_PM_XOFF;
2745 rpn->bit_rate = bit_rate;
2746 rpn->line_settings = RFCOMM_MKRPN_LINE_SETTINGS(data_bits,
2748 rpn->flow_control = flow_control;
2749 rpn->xon_char = xon_char;
2750 rpn->xoff_char = xoff_char;
2751 rpn->param_mask = htole16(param_mask); /* XXX */
2753 m0->m_pkthdr.len = m0->m_len = sizeof(*hdr) + sizeof(*rpn);
2755 hdr->type = RFCOMM_MKMCC_TYPE(0, RFCOMM_MCC_RPN);
2756 error = ng_btsocket_rfcomm_send_uih(s,
2757 RFCOMM_MKADDRESS(INITIATOR(s), 0), 0, 0, m0);
2759 NG_FREE_M(m0); /* XXX ignore response */
2762 } /* ng_btsocket_rfcomm_receive_rpn */
2765 * Receive RFCOMM RLS MCC command
2769 ng_btsocket_rfcomm_receive_rls(ng_btsocket_rfcomm_session_p s, struct mbuf *m0)
2771 struct rfcomm_mcc_hdr *hdr = mtod(m0, struct rfcomm_mcc_hdr *);
2772 struct rfcomm_mcc_rls *rls = (struct rfcomm_mcc_rls *)(hdr + 1);
2775 mtx_assert(&s->session_mtx, MA_OWNED);
2778 * XXX FIXME Do we have to do anything else here? Remote peer tries to
2779 * tell us something about DLCI. Just report what we have received and
2780 * return back received values as required by TS 07.10 spec.
2783 NG_BTSOCKET_RFCOMM_INFO(
2784 "%s: Got MCC RLS, dlci=%d, status=%#x, cr=%d, length=%d, session state=%d, " \
2785 "flags=%#x, mtu=%d, len=%d\n",
2786 __func__, RFCOMM_DLCI(rls->address), rls->status,
2787 RFCOMM_CR(hdr->type), RFCOMM_MCC_LENGTH(hdr->length),
2788 s->state, s->flags, s->mtu, m0->m_pkthdr.len);
2790 if (RFCOMM_CR(hdr->type)) {
2791 if (rls->status & 0x1)
2792 NG_BTSOCKET_RFCOMM_ERR(
2793 "%s: Got RLS dlci=%d, error=%#x\n", __func__, RFCOMM_DLCI(rls->address),
2796 hdr->type = RFCOMM_MKMCC_TYPE(0, RFCOMM_MCC_RLS);
2797 error = ng_btsocket_rfcomm_send_uih(s,
2798 RFCOMM_MKADDRESS(INITIATOR(s), 0), 0, 0, m0);
2800 NG_FREE_M(m0); /* XXX ignore responses */
2803 } /* ng_btsocket_rfcomm_receive_rls */
2806 * Receive RFCOMM PN MCC command
2810 ng_btsocket_rfcomm_receive_pn(ng_btsocket_rfcomm_session_p s, struct mbuf *m0)
2812 struct rfcomm_mcc_hdr *hdr = mtod(m0, struct rfcomm_mcc_hdr*);
2813 struct rfcomm_mcc_pn *pn = (struct rfcomm_mcc_pn *)(hdr+1);
2814 ng_btsocket_rfcomm_pcb_t *pcb = NULL;
2817 mtx_assert(&s->session_mtx, MA_OWNED);
2819 NG_BTSOCKET_RFCOMM_INFO(
2820 "%s: Got MCC PN, dlci=%d, cr=%d, length=%d, flow_control=%#x, priority=%d, " \
2821 "ack_timer=%d, mtu=%d, max_retrans=%d, credits=%d, session state=%d, " \
2822 "flags=%#x, session mtu=%d, len=%d\n",
2823 __func__, pn->dlci, RFCOMM_CR(hdr->type),
2824 RFCOMM_MCC_LENGTH(hdr->length), pn->flow_control, pn->priority,
2825 pn->ack_timer, le16toh(pn->mtu), pn->max_retrans, pn->credits,
2826 s->state, s->flags, s->mtu, m0->m_pkthdr.len);
2828 if (pn->dlci == 0) {
2829 NG_BTSOCKET_RFCOMM_ERR("%s: Zero dlci in MCC PN\n", __func__);
2835 /* Check if we have this dlci */
2836 pcb = ng_btsocket_rfcomm_pcb_by_dlci(s, pn->dlci);
2838 mtx_lock(&pcb->pcb_mtx);
2840 if (RFCOMM_CR(hdr->type)) {
2842 ng_btsocket_rfcomm_set_pn(pcb, 1, pn->flow_control,
2843 pn->credits, pn->mtu);
2845 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_CFC) {
2846 pn->flow_control = 0xe0;
2847 pn->credits = RFCOMM_DEFAULT_CREDITS;
2849 pn->flow_control = 0;
2853 hdr->type = RFCOMM_MKMCC_TYPE(0, RFCOMM_MCC_PN);
2854 error = ng_btsocket_rfcomm_send_uih(s,
2855 RFCOMM_MKADDRESS(INITIATOR(s), 0),
2858 /* PN Response - proceed with SABM. Timeout still set */
2859 if (pcb->state == NG_BTSOCKET_RFCOMM_DLC_CONFIGURING) {
2860 ng_btsocket_rfcomm_set_pn(pcb, 0,
2861 pn->flow_control, pn->credits, pn->mtu);
2863 pcb->state = NG_BTSOCKET_RFCOMM_DLC_CONNECTING;
2864 error = ng_btsocket_rfcomm_send_command(s,
2865 RFCOMM_FRAME_SABM, pn->dlci);
2867 NG_BTSOCKET_RFCOMM_WARN(
2868 "%s: Got PN response for dlci=%d in invalid state=%d\n",
2869 __func__, pn->dlci, pcb->state);
2874 mtx_unlock(&pcb->pcb_mtx);
2875 } else if (RFCOMM_CR(hdr->type)) {
2876 /* PN request to non-existing dlci - incomming connection */
2877 pcb = ng_btsocket_rfcomm_connect_ind(s,
2878 RFCOMM_SRVCHANNEL(pn->dlci));
2880 mtx_lock(&pcb->pcb_mtx);
2882 pcb->dlci = pn->dlci;
2884 ng_btsocket_rfcomm_set_pn(pcb, 1, pn->flow_control,
2885 pn->credits, pn->mtu);
2887 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_CFC) {
2888 pn->flow_control = 0xe0;
2889 pn->credits = RFCOMM_DEFAULT_CREDITS;
2891 pn->flow_control = 0;
2895 hdr->type = RFCOMM_MKMCC_TYPE(0, RFCOMM_MCC_PN);
2896 error = ng_btsocket_rfcomm_send_uih(s,
2897 RFCOMM_MKADDRESS(INITIATOR(s), 0),
2901 ng_btsocket_rfcomm_timeout(pcb);
2902 pcb->state = NG_BTSOCKET_RFCOMM_DLC_CONNECTING;
2903 soisconnecting(pcb->so);
2905 ng_btsocket_rfcomm_pcb_kill(pcb, error);
2907 mtx_unlock(&pcb->pcb_mtx);
2909 /* Nobody is listen()ing on this channel */
2910 error = ng_btsocket_rfcomm_send_command(s,
2911 RFCOMM_FRAME_DM, pn->dlci);
2915 NG_FREE_M(m0); /* XXX ignore response to non-existing dlci */
2918 } /* ng_btsocket_rfcomm_receive_pn */
2921 * Set PN parameters for dlci. Caller must hold pcb->pcb_mtx.
2923 * From Bluetooth spec.
2925 * "... The CL1 - CL4 field is completely redefined. (In TS07.10 this defines
2926 * the convergence layer to use, which is not applicable to RFCOMM. In RFCOMM,
2927 * in Bluetooth versions up to 1.0B, this field was forced to 0).
2929 * In the PN request sent prior to a DLC establishment, this field must contain
2930 * the value 15 (0xF), indicating support of credit based flow control in the
2931 * sender. See Table 5.3 below. If the PN response contains any other value
2932 * than 14 (0xE) in this field, it is inferred that the peer RFCOMM entity is
2933 * not supporting the credit based flow control feature. (This is only possible
2934 * if the peer RFCOMM implementation is only conforming to Bluetooth version
2935 * 1.0B.) If a PN request is sent on an already open DLC, then this field must
2936 * contain the value zero; it is not possible to set initial credits more
2937 * than once per DLC activation. A responding implementation must set this
2938 * field in the PN response to 14 (0xE), if (and only if) the value in the PN
2939 * request was 15..."
2943 ng_btsocket_rfcomm_set_pn(ng_btsocket_rfcomm_pcb_p pcb, u_int8_t cr,
2944 u_int8_t flow_control, u_int8_t credits, u_int16_t mtu)
2946 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
2948 pcb->mtu = le16toh(mtu);
2951 if (flow_control == 0xf0) {
2952 pcb->flags |= NG_BTSOCKET_RFCOMM_DLC_CFC;
2953 pcb->tx_cred = credits;
2955 pcb->flags &= ~NG_BTSOCKET_RFCOMM_DLC_CFC;
2959 if (flow_control == 0xe0) {
2960 pcb->flags |= NG_BTSOCKET_RFCOMM_DLC_CFC;
2961 pcb->tx_cred = credits;
2963 pcb->flags &= ~NG_BTSOCKET_RFCOMM_DLC_CFC;
2968 NG_BTSOCKET_RFCOMM_INFO(
2969 "%s: cr=%d, dlci=%d, state=%d, flags=%#x, mtu=%d, rx_cred=%d, tx_cred=%d\n",
2970 __func__, cr, pcb->dlci, pcb->state, pcb->flags, pcb->mtu,
2971 pcb->rx_cred, pcb->tx_cred);
2972 } /* ng_btsocket_rfcomm_set_pn */
2975 * Send RFCOMM SABM/DISC/UA/DM frames. Caller must hold s->session_mtx
2979 ng_btsocket_rfcomm_send_command(ng_btsocket_rfcomm_session_p s,
2980 u_int8_t type, u_int8_t dlci)
2982 struct rfcomm_cmd_hdr *hdr = NULL;
2983 struct mbuf *m = NULL;
2986 mtx_assert(&s->session_mtx, MA_OWNED);
2988 NG_BTSOCKET_RFCOMM_INFO(
2989 "%s: Sending command type %#x, session state=%d, flags=%#x, mtu=%d, dlci=%d\n",
2990 __func__, type, s->state, s->flags, s->mtu, dlci);
2993 case RFCOMM_FRAME_SABM:
2994 case RFCOMM_FRAME_DISC:
2998 case RFCOMM_FRAME_UA:
2999 case RFCOMM_FRAME_DM:
3004 panic("%s: Invalid frame type=%#x", __func__, type);
3009 MGETHDR(m, MB_DONTWAIT, MT_DATA);
3013 m->m_pkthdr.len = m->m_len = sizeof(*hdr);
3015 hdr = mtod(m, struct rfcomm_cmd_hdr *);
3016 hdr->address = RFCOMM_MKADDRESS(cr, dlci);
3017 hdr->control = RFCOMM_MKCONTROL(type, 1);
3018 hdr->length = RFCOMM_MKLEN8(0);
3019 hdr->fcs = ng_btsocket_rfcomm_fcs3((u_int8_t *) hdr);
3021 NG_BT_MBUFQ_ENQUEUE(&s->outq, m);
3024 } /* ng_btsocket_rfcomm_send_command */
3027 * Send RFCOMM UIH frame. Caller must hold s->session_mtx
3031 ng_btsocket_rfcomm_send_uih(ng_btsocket_rfcomm_session_p s, u_int8_t address,
3032 u_int8_t pf, u_int8_t credits, struct mbuf *data)
3034 struct rfcomm_frame_hdr *hdr = NULL;
3035 struct mbuf *m = NULL, *mcrc = NULL;
3038 mtx_assert(&s->session_mtx, MA_OWNED);
3040 MGETHDR(m, MB_DONTWAIT, MT_DATA);
3045 m->m_pkthdr.len = m->m_len = sizeof(*hdr);
3047 MGET(mcrc, MB_DONTWAIT, MT_DATA);
3054 /* Fill UIH frame header */
3055 hdr = mtod(m, struct rfcomm_frame_hdr *);
3056 hdr->address = address;
3057 hdr->control = RFCOMM_MKCONTROL(RFCOMM_FRAME_UIH, pf);
3060 mcrc->m_data[0] = ng_btsocket_rfcomm_fcs2((u_int8_t *) hdr);
3062 /* Put length back */
3063 length = (data != NULL)? data->m_pkthdr.len : 0;
3065 u_int16_t l = htole16(RFCOMM_MKLEN16(length));
3067 bcopy(&l, &hdr->length, sizeof(l));
3071 hdr->length = RFCOMM_MKLEN8(length);
3074 m->m_data[m->m_len] = credits;
3082 m->m_pkthdr.len += length;
3089 NG_BTSOCKET_RFCOMM_INFO(
3090 "%s: Sending UIH state=%d, flags=%#x, address=%d, length=%d, pf=%d, " \
3091 "credits=%d, len=%d\n",
3092 __func__, s->state, s->flags, address, length, pf, credits,
3095 NG_BT_MBUFQ_ENQUEUE(&s->outq, m);
3098 } /* ng_btsocket_rfcomm_send_uih */
3101 * Send MSC request. Caller must hold pcb->pcb_mtx and pcb->session->session_mtx
3105 ng_btsocket_rfcomm_send_msc(ng_btsocket_rfcomm_pcb_p pcb)
3107 struct mbuf *m = NULL;
3108 struct rfcomm_mcc_hdr *hdr = NULL;
3109 struct rfcomm_mcc_msc *msc = NULL;
3111 mtx_assert(&pcb->session->session_mtx, MA_OWNED);
3112 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
3114 MGETHDR(m, MB_DONTWAIT, MT_DATA);
3118 m->m_pkthdr.len = m->m_len = sizeof(*hdr) + sizeof(*msc);
3120 hdr = mtod(m, struct rfcomm_mcc_hdr *);
3121 msc = (struct rfcomm_mcc_msc *)(hdr + 1);
3123 hdr->type = RFCOMM_MKMCC_TYPE(1, RFCOMM_MCC_MSC);
3124 hdr->length = RFCOMM_MKLEN8(sizeof(*msc));
3126 msc->address = RFCOMM_MKADDRESS(1, pcb->dlci);
3127 msc->modem = pcb->lmodem;
3129 NG_BTSOCKET_RFCOMM_INFO(
3130 "%s: Sending MSC dlci=%d, state=%d, flags=%#x, address=%d, modem=%#x\n",
3131 __func__, pcb->dlci, pcb->state, pcb->flags, msc->address,
3134 return (ng_btsocket_rfcomm_send_uih(pcb->session,
3135 RFCOMM_MKADDRESS(INITIATOR(pcb->session), 0), 0, 0, m));
3136 } /* ng_btsocket_rfcomm_send_msc */
3139 * Send PN request. Caller must hold pcb->pcb_mtx and pcb->session->session_mtx
3143 ng_btsocket_rfcomm_send_pn(ng_btsocket_rfcomm_pcb_p pcb)
3145 struct mbuf *m = NULL;
3146 struct rfcomm_mcc_hdr *hdr = NULL;
3147 struct rfcomm_mcc_pn *pn = NULL;
3149 mtx_assert(&pcb->session->session_mtx, MA_OWNED);
3150 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
3152 MGETHDR(m, MB_DONTWAIT, MT_DATA);
3156 m->m_pkthdr.len = m->m_len = sizeof(*hdr) + sizeof(*pn);
3158 hdr = mtod(m, struct rfcomm_mcc_hdr *);
3159 pn = (struct rfcomm_mcc_pn *)(hdr + 1);
3161 hdr->type = RFCOMM_MKMCC_TYPE(1, RFCOMM_MCC_PN);
3162 hdr->length = RFCOMM_MKLEN8(sizeof(*pn));
3164 pn->dlci = pcb->dlci;
3167 * Set default DLCI priority as described in GSM 07.10
3168 * (ETSI TS 101 369) clause 5.6 page 42
3171 pn->priority = (pcb->dlci < 56)? (((pcb->dlci >> 3) << 3) + 7) : 61;
3173 pn->mtu = htole16(pcb->mtu);
3174 pn->max_retrans = 0;
3176 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_CFC) {
3177 pn->flow_control = 0xf0;
3178 pn->credits = pcb->rx_cred;
3180 pn->flow_control = 0;
3184 NG_BTSOCKET_RFCOMM_INFO(
3185 "%s: Sending PN dlci=%d, state=%d, flags=%#x, mtu=%d, flow_control=%#x, " \
3186 "credits=%d\n", __func__, pcb->dlci, pcb->state, pcb->flags, pcb->mtu,
3187 pn->flow_control, pn->credits);
3189 return (ng_btsocket_rfcomm_send_uih(pcb->session,
3190 RFCOMM_MKADDRESS(INITIATOR(pcb->session), 0), 0, 0, m));
3191 } /* ng_btsocket_rfcomm_send_pn */
3194 * Calculate and send credits based on available space in receive buffer
3198 ng_btsocket_rfcomm_send_credits(ng_btsocket_rfcomm_pcb_p pcb)
3203 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
3204 mtx_assert(&pcb->session->session_mtx, MA_OWNED);
3206 NG_BTSOCKET_RFCOMM_INFO(
3207 "%s: Sending more credits, dlci=%d, state=%d, flags=%#x, mtu=%d, " \
3208 "space=%ld, tx_cred=%d, rx_cred=%d\n",
3209 __func__, pcb->dlci, pcb->state, pcb->flags, pcb->mtu,
3210 sbspace(&pcb->so->so_rcv), pcb->tx_cred, pcb->rx_cred);
3212 credits = sbspace(&pcb->so->so_rcv) / pcb->mtu;
3214 if (pcb->rx_cred + credits > RFCOMM_MAX_CREDITS)
3215 credits = RFCOMM_MAX_CREDITS - pcb->rx_cred;
3217 error = ng_btsocket_rfcomm_send_uih(
3219 RFCOMM_MKADDRESS(INITIATOR(pcb->session),
3220 pcb->dlci), 1, credits, NULL);
3222 pcb->rx_cred += credits;
3224 NG_BTSOCKET_RFCOMM_INFO(
3225 "%s: Gave remote side %d more credits, dlci=%d, state=%d, flags=%#x, " \
3226 "rx_cred=%d, tx_cred=%d\n", __func__, credits, pcb->dlci, pcb->state,
3227 pcb->flags, pcb->rx_cred, pcb->tx_cred);
3229 NG_BTSOCKET_RFCOMM_ERR(
3230 "%s: Could not send credits, error=%d, dlci=%d, state=%d, flags=%#x, " \
3231 "mtu=%d, space=%ld, tx_cred=%d, rx_cred=%d\n",
3232 __func__, error, pcb->dlci, pcb->state,
3233 pcb->flags, pcb->mtu, sbspace(&pcb->so->so_rcv),
3234 pcb->tx_cred, pcb->rx_cred);
3238 } /* ng_btsocket_rfcomm_send_credits */
3240 /*****************************************************************************
3241 *****************************************************************************
3243 *****************************************************************************
3244 *****************************************************************************/
3247 * Send data from socket send buffer
3248 * Caller must hold pcb->pcb_mtx and pcb->session->session_mtx
3252 ng_btsocket_rfcomm_pcb_send(ng_btsocket_rfcomm_pcb_p pcb, int limit)
3254 struct mbuf *m = NULL;
3255 int sent, length, error;
3257 mtx_assert(&pcb->session->session_mtx, MA_OWNED);
3258 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
3260 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_CFC)
3261 limit = min(limit, pcb->tx_cred);
3262 else if (!(pcb->rmodem & RFCOMM_MODEM_FC))
3263 limit = min(limit, RFCOMM_MAX_CREDITS); /* XXX ??? */
3268 NG_BTSOCKET_RFCOMM_INFO(
3269 "%s: Could not send - remote flow control asserted, dlci=%d, flags=%#x, " \
3270 "rmodem=%#x, tx_cred=%d\n",
3271 __func__, pcb->dlci, pcb->flags, pcb->rmodem,
3277 for (error = 0, sent = 0; sent < limit; sent ++) {
3278 length = min(pcb->mtu, pcb->so->so_snd.sb_cc);
3282 /* Get the chunk from the socket's send buffer */
3283 m = ng_btsocket_rfcomm_prepare_packet(&pcb->so->so_snd, length);
3289 sbdrop(&pcb->so->so_snd, length);
3291 error = ng_btsocket_rfcomm_send_uih(pcb->session,
3292 RFCOMM_MKADDRESS(INITIATOR(pcb->session),
3293 pcb->dlci), 0, 0, m);
3298 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_CFC)
3299 pcb->tx_cred -= sent;
3301 if (error == 0 && sent > 0) {
3302 pcb->flags &= ~NG_BTSOCKET_RFCOMM_DLC_SENDING;
3307 } /* ng_btsocket_rfcomm_pcb_send */
3310 * Unlink and disconnect DLC. If ng_btsocket_rfcomm_pcb_kill() returns
3311 * non zero value than socket has no reference and has to be detached.
3312 * Caller must hold pcb->pcb_mtx and pcb->session->session_mtx
3316 ng_btsocket_rfcomm_pcb_kill(ng_btsocket_rfcomm_pcb_p pcb, int error)
3318 ng_btsocket_rfcomm_session_p s = pcb->session;
3320 NG_BTSOCKET_RFCOMM_INFO(
3321 "%s: Killing DLC, so=%p, dlci=%d, state=%d, flags=%#x, error=%d\n",
3322 __func__, pcb->so, pcb->dlci, pcb->state, pcb->flags, error);
3324 if (pcb->session == NULL)
3325 panic("%s: DLC without session, pcb=%p, state=%d, flags=%#x",
3326 __func__, pcb, pcb->state, pcb->flags);
3328 mtx_assert(&pcb->session->session_mtx, MA_OWNED);
3329 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
3331 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_TIMO)
3332 ng_btsocket_rfcomm_untimeout(pcb);
3334 /* Detach DLC from the session. Does not matter which state DLC in */
3335 LIST_REMOVE(pcb, session_next);
3336 pcb->session = NULL;
3338 /* Change DLC state and wakeup all sleepers */
3339 pcb->state = NG_BTSOCKET_RFCOMM_DLC_CLOSED;
3340 pcb->so->so_error = error;
3341 soisdisconnected(pcb->so);
3342 wakeup(&pcb->state);
3344 /* Check if we have any DLCs left on the session */
3345 if (LIST_EMPTY(&s->dlcs) && INITIATOR(s)) {
3346 NG_BTSOCKET_RFCOMM_INFO(
3347 "%s: Disconnecting session, state=%d, flags=%#x, mtu=%d\n",
3348 __func__, s->state, s->flags, s->mtu);
3351 case NG_BTSOCKET_RFCOMM_SESSION_CLOSED:
3352 case NG_BTSOCKET_RFCOMM_SESSION_DISCONNECTING:
3354 * Do not have to do anything here. We can get here
3355 * when L2CAP connection was terminated or we have
3356 * received DISC on multiplexor channel
3360 case NG_BTSOCKET_RFCOMM_SESSION_OPEN:
3361 /* Send DISC on multiplexor channel */
3362 error = ng_btsocket_rfcomm_send_command(s,
3363 RFCOMM_FRAME_DISC, 0);
3365 s->state = NG_BTSOCKET_RFCOMM_SESSION_DISCONNECTING;
3370 case NG_BTSOCKET_RFCOMM_SESSION_CONNECTING:
3371 case NG_BTSOCKET_RFCOMM_SESSION_CONNECTED:
3372 s->state = NG_BTSOCKET_RFCOMM_SESSION_CLOSED;
3375 /* case NG_BTSOCKET_RFCOMM_SESSION_LISTENING: */
3377 panic("%s: Invalid session state=%d, flags=%#x",
3378 __func__, s->state, s->flags);
3382 ng_btsocket_rfcomm_task_wakeup();
3384 } /* ng_btsocket_rfcomm_pcb_kill */
3387 * Look for given dlci for given RFCOMM session. Caller must hold s->session_mtx
3390 static ng_btsocket_rfcomm_pcb_p
3391 ng_btsocket_rfcomm_pcb_by_dlci(ng_btsocket_rfcomm_session_p s, int dlci)
3393 ng_btsocket_rfcomm_pcb_p pcb = NULL;
3395 mtx_assert(&s->session_mtx, MA_OWNED);
3397 LIST_FOREACH(pcb, &s->dlcs, session_next)
3398 if (pcb->dlci == dlci)
3402 } /* ng_btsocket_rfcomm_pcb_by_dlci */
3405 * Look for socket that listens on given src address and given channel
3408 static ng_btsocket_rfcomm_pcb_p
3409 ng_btsocket_rfcomm_pcb_listener(bdaddr_p src, int channel)
3411 ng_btsocket_rfcomm_pcb_p pcb = NULL, pcb1 = NULL;
3413 mtx_lock(&ng_btsocket_rfcomm_sockets_mtx);
3415 LIST_FOREACH(pcb, &ng_btsocket_rfcomm_sockets, next) {
3416 if (pcb->channel != channel ||
3417 !(pcb->so->so_options & SO_ACCEPTCONN))
3420 if (bcmp(&pcb->src, src, sizeof(*src)) == 0)
3423 if (bcmp(&pcb->src, NG_HCI_BDADDR_ANY, sizeof(bdaddr_t)) == 0)
3427 mtx_unlock(&ng_btsocket_rfcomm_sockets_mtx);
3429 return ((pcb != NULL)? pcb : pcb1);
3430 } /* ng_btsocket_rfcomm_pcb_listener */
3432 /*****************************************************************************
3433 *****************************************************************************
3435 *****************************************************************************
3436 *****************************************************************************/
3439 * Set timeout. Caller MUST hold pcb_mtx
3443 ng_btsocket_rfcomm_timeout(ng_btsocket_rfcomm_pcb_p pcb)
3445 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
3447 if (!(pcb->flags & NG_BTSOCKET_RFCOMM_DLC_TIMO)) {
3448 pcb->flags |= NG_BTSOCKET_RFCOMM_DLC_TIMO;
3449 pcb->flags &= ~NG_BTSOCKET_RFCOMM_DLC_TIMEDOUT;
3450 pcb->timo = timeout(ng_btsocket_rfcomm_process_timeout, pcb,
3451 ng_btsocket_rfcomm_timo * hz);
3453 panic("%s: Duplicated socket timeout?!", __func__);
3454 } /* ng_btsocket_rfcomm_timeout */
3457 * Unset pcb timeout. Caller MUST hold pcb_mtx
3461 ng_btsocket_rfcomm_untimeout(ng_btsocket_rfcomm_pcb_p pcb)
3463 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
3465 if (pcb->flags & NG_BTSOCKET_RFCOMM_DLC_TIMO) {
3466 untimeout(ng_btsocket_rfcomm_process_timeout, pcb, pcb->timo);
3467 pcb->flags &= ~NG_BTSOCKET_RFCOMM_DLC_TIMO;
3468 pcb->flags &= ~NG_BTSOCKET_RFCOMM_DLC_TIMEDOUT;
3470 panic("%s: No socket timeout?!", __func__);
3471 } /* ng_btsocket_rfcomm_timeout */
3474 * Process pcb timeout
3478 ng_btsocket_rfcomm_process_timeout(void *xpcb)
3480 ng_btsocket_rfcomm_pcb_p pcb = (ng_btsocket_rfcomm_pcb_p) xpcb;
3482 mtx_lock(&pcb->pcb_mtx);
3484 NG_BTSOCKET_RFCOMM_INFO(
3485 "%s: Timeout, so=%p, dlci=%d, state=%d, flags=%#x\n",
3486 __func__, pcb->so, pcb->dlci, pcb->state, pcb->flags);
3488 pcb->flags &= ~NG_BTSOCKET_RFCOMM_DLC_TIMO;
3489 pcb->flags |= NG_BTSOCKET_RFCOMM_DLC_TIMEDOUT;
3491 switch (pcb->state) {
3492 case NG_BTSOCKET_RFCOMM_DLC_CONFIGURING:
3493 case NG_BTSOCKET_RFCOMM_DLC_CONNECTING:
3494 pcb->state = NG_BTSOCKET_RFCOMM_DLC_DISCONNECTING;
3497 case NG_BTSOCKET_RFCOMM_DLC_W4_CONNECT:
3498 case NG_BTSOCKET_RFCOMM_DLC_DISCONNECTING:
3503 "%s: DLC timeout in invalid state, dlci=%d, state=%d, flags=%#x\n",
3504 __func__, pcb->dlci, pcb->state, pcb->flags);
3508 ng_btsocket_rfcomm_task_wakeup();
3510 mtx_unlock(&pcb->pcb_mtx);
3511 } /* ng_btsocket_rfcomm_process_timeout */
3514 * Get up to length bytes from the socket buffer
3517 static struct mbuf *
3518 ng_btsocket_rfcomm_prepare_packet(struct sockbuf *sb, int length)
3520 struct mbuf *top = NULL, *m = NULL, *n = NULL, *nextpkt = NULL;
3521 int mlen, noff, len;
3523 MGETHDR(top, MB_DONTWAIT, MT_DATA);
3527 top->m_pkthdr.len = length;
3533 nextpkt = n->m_nextpkt;
3536 while (length > 0 && n != NULL) {
3537 len = min(mlen - m->m_len, n->m_len - noff);
3541 bcopy(mtod(n, caddr_t)+noff, mtod(m, caddr_t)+m->m_len, len);
3546 if (length > 0 && m->m_len == mlen) {
3547 MGET(m->m_next, MB_DONTWAIT, MT_DATA);
3548 if (m->m_next == NULL) {
3558 if (noff == n->m_len) {
3565 nextpkt = (n != NULL)? n->m_nextpkt : NULL;
3570 panic("%s: length=%d", __func__, length);
3571 if (length > 0 && n == NULL)
3572 panic("%s: bogus length=%d, n=%p", __func__, length, n);
3575 } /* ng_btsocket_rfcomm_prepare_packet */