56 static int rfcomm_send_sabm(struct rfcomm_session *s, u8 dlci);
57 static int rfcomm_send_disc(struct rfcomm_session *s, u8 dlci);
61 static int rfcomm_send_msc(struct rfcomm_session *s, int cr, u8 dlci, u8 v24_sig);
85 #define __addr(cr, dlci)       (((dlci & 0x3f) << 2) | (cr << 1) | 0x01)  argument
88 #define __srv_channel(dlci)    (dlci >> 1)  argument
355 static struct rfcomm_dlc *rfcomm_dlc_get(struct rfcomm_session *s, u8 dlci)  in rfcomm_dlc_get()  argument
360 		if (d->dlci == dlci)  in rfcomm_dlc_get()
375 	u8 dlci;  in __rfcomm_dlc_open()  local
393 	dlci = __dlci(__session_dir(s), channel);  in __rfcomm_dlc_open()
396 	if (rfcomm_dlc_get(s, dlci))  in __rfcomm_dlc_open()
401 	d->dlci     = dlci;  in __rfcomm_dlc_open()
402 	d->addr     = __addr(s->initiator, dlci);  in __rfcomm_dlc_open()
443 		rfcomm_send_disc(s, d->dlci);  in __rfcomm_dlc_disconn()
458 			d, d->state, d->dlci, err, s);  in __rfcomm_dlc_close()
509 	BT_DBG("dlc %p state %ld dlci %d err %d", d, d->state, d->dlci, err);  in rfcomm_dlc_close()
541 	u8 dlci;  in rfcomm_dlc_exists()  local
549 		dlci = __dlci(__session_dir(s), channel);  in rfcomm_dlc_exists()
550 		dlc = rfcomm_dlc_get(s, dlci);  in rfcomm_dlc_exists()
851 static int rfcomm_send_sabm(struct rfcomm_session *s, u8 dlci)  in rfcomm_send_sabm()  argument
855 	BT_DBG("%p dlci %d", s, dlci);  in rfcomm_send_sabm()
857 	cmd.addr = __addr(s->initiator, dlci);  in rfcomm_send_sabm()
865 static int rfcomm_send_ua(struct rfcomm_session *s, u8 dlci)  in rfcomm_send_ua()  argument
869 	BT_DBG("%p dlci %d", s, dlci);  in rfcomm_send_ua()
871 	cmd.addr = __addr(!s->initiator, dlci);  in rfcomm_send_ua()
879 static int rfcomm_send_disc(struct rfcomm_session *s, u8 dlci)  in rfcomm_send_disc()  argument
883 	BT_DBG("%p dlci %d", s, dlci);  in rfcomm_send_disc()
885 	cmd.addr = __addr(s->initiator, dlci);  in rfcomm_send_disc()
898 	BT_DBG("dlc %p dlci %d", d, d->dlci);  in rfcomm_queue_disc()
915 static int rfcomm_send_dm(struct rfcomm_session *s, u8 dlci)  in rfcomm_send_dm()  argument
919 	BT_DBG("%p dlci %d", s, dlci);  in rfcomm_send_dm()
921 	cmd.addr = __addr(!s->initiator, dlci);  in rfcomm_send_dm()
961 	BT_DBG("%p cr %d dlci %d mtu %d", s, cr, d->dlci, d->mtu);  in rfcomm_send_pn()
973 	pn->dlci        = d->dlci;  in rfcomm_send_pn()
996 int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci,  in rfcomm_send_rpn()  argument
1008 		s, cr, dlci, bit_rate, data_bits, stop_bits, parity,  in rfcomm_send_rpn()
1021 	rpn->dlci          = __addr(1, dlci);  in rfcomm_send_rpn()
1034 static int rfcomm_send_rls(struct rfcomm_session *s, int cr, u8 dlci, u8 status)  in rfcomm_send_rls()  argument
1053 	rls->dlci   = __addr(1, dlci);  in rfcomm_send_rls()
1061 static int rfcomm_send_msc(struct rfcomm_session *s, int cr, u8 dlci, u8 v24_sig)  in rfcomm_send_msc()  argument
1080 	msc->dlci    = __addr(1, dlci);  in rfcomm_send_msc()
1204 static struct rfcomm_session *rfcomm_recv_ua(struct rfcomm_session *s, u8 dlci)  in rfcomm_recv_ua()  argument
1206 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_ua()
1208 	if (dlci) {  in rfcomm_recv_ua()
1210 		struct rfcomm_dlc *d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_ua()
1212 			rfcomm_send_dm(s, dlci);  in rfcomm_recv_ua()
1225 			rfcomm_send_msc(s, 1, dlci, d->v24_sig);  in rfcomm_recv_ua()
1256 static struct rfcomm_session *rfcomm_recv_dm(struct rfcomm_session *s, u8 dlci)  in rfcomm_recv_dm()  argument
1260 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_dm()
1262 	if (dlci) {  in rfcomm_recv_dm()
1264 		struct rfcomm_dlc *d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_dm()
1286 					       u8 dlci)  in rfcomm_recv_disc()  argument
1290 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_disc()
1292 	if (dlci) {  in rfcomm_recv_disc()
1293 		struct rfcomm_dlc *d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_disc()
1295 			rfcomm_send_ua(s, dlci);  in rfcomm_recv_disc()
1305 			rfcomm_send_dm(s, dlci);  in rfcomm_recv_disc()
1327 	rfcomm_send_ua(d->session, d->dlci);  in rfcomm_dlc_accept()
1339 	rfcomm_send_msc(d->session, 1, d->dlci, d->v24_sig);  in rfcomm_dlc_accept()
1361 static int rfcomm_recv_sabm(struct rfcomm_session *s, u8 dlci)  in rfcomm_recv_sabm()  argument
1366 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_sabm()
1368 	if (!dlci) {  in rfcomm_recv_sabm()
1379 	d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_sabm()
1389 	channel = __srv_channel(dlci);  in rfcomm_recv_sabm()
1391 		d->dlci = dlci;  in rfcomm_recv_sabm()
1392 		d->addr = __addr(s->initiator, dlci);  in rfcomm_recv_sabm()
1397 		rfcomm_send_dm(s, dlci);  in rfcomm_recv_sabm()
1408 			d, d->state, d->dlci, pn->mtu, pn->flow_ctrl, pn->credits);  in rfcomm_apply_pn()
1436 	u8 dlci = pn->dlci;  in rfcomm_recv_pn()  local
1438 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_pn()
1440 	if (!dlci)  in rfcomm_recv_pn()
1443 	d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_pn()
1456 				rfcomm_send_sabm(s, d->dlci);  in rfcomm_recv_pn()
1461 		u8 channel = __srv_channel(dlci);  in rfcomm_recv_pn()
1469 			d->dlci = dlci;  in rfcomm_recv_pn()
1470 			d->addr = __addr(s->initiator, dlci);  in rfcomm_recv_pn()
1478 			rfcomm_send_dm(s, dlci);  in rfcomm_recv_pn()
1487 	u8 dlci = __get_dlci(rpn->dlci);  in rfcomm_recv_rpn()  local
1499 		dlci, cr, len, rpn->bit_rate, rpn->line_settings, rpn->flow_ctrl,  in rfcomm_recv_rpn()
1584 	rfcomm_send_rpn(s, 0, dlci, bit_rate, data_bits, stop_bits,  in rfcomm_recv_rpn()
1593 	u8 dlci = __get_dlci(rls->dlci);  in rfcomm_recv_rls()  local
1595 	BT_DBG("dlci %d cr %d status 0x%x", dlci, cr, rls->status);  in rfcomm_recv_rls()
1604 	rfcomm_send_rls(s, 0, dlci, rls->status);  in rfcomm_recv_rls()
1613 	u8 dlci = __get_dlci(msc->dlci);  in rfcomm_recv_msc()  local
1615 	BT_DBG("dlci %d cr %d v24 0x%x", dlci, cr, msc->v24_sig);  in rfcomm_recv_msc()
1617 	d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_msc()
1636 		rfcomm_send_msc(s, 0, dlci, msc->v24_sig);  in rfcomm_recv_msc()
1705 static int rfcomm_recv_data(struct rfcomm_session *s, u8 dlci, int pf, struct sk_buff *skb)  in rfcomm_recv_data()  argument
1709 	BT_DBG("session %p state %ld dlci %d pf %d", s, s->state, dlci, pf);  in rfcomm_recv_data()
1711 	d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_data()
1713 		rfcomm_send_dm(s, dlci);  in rfcomm_recv_data()
1742 	u8 type, dlci, fcs;  in rfcomm_recv_frame()  local
1750 	dlci = __get_dlci(hdr->addr);  in rfcomm_recv_frame()
1771 			rfcomm_recv_sabm(s, dlci);  in rfcomm_recv_frame()
1776 			s = rfcomm_recv_disc(s, dlci);  in rfcomm_recv_frame()
1781 			s = rfcomm_recv_ua(s, dlci);  in rfcomm_recv_frame()
1785 		s = rfcomm_recv_dm(s, dlci);  in rfcomm_recv_frame()
1789 		if (dlci) {  in rfcomm_recv_frame()
1790 			rfcomm_recv_data(s, dlci, __test_pf(hdr->ctrl), skb);  in rfcomm_recv_frame()
1838 		rfcomm_send_msc(d->session, 1, d->dlci, d->v24_sig);  in rfcomm_process_tx()
1914 				rfcomm_send_dm(s, d->dlci);  in rfcomm_process_dlcs()
2198 				   d->state, d->dlci, d->mtu,  in rfcomm_dlc_debugfs_show()