55 static int rfcomm_send_sabm(struct rfcomm_session *s, u8 dlci);
56 static int rfcomm_send_disc(struct rfcomm_session *s, u8 dlci);
60 static int rfcomm_send_msc(struct rfcomm_session *s, int cr, u8 dlci, u8 v24_sig);
86 #define __addr(cr, dlci)       (((dlci & 0x3f) << 2) | (cr << 1) | 0x01)  argument
89 #define __srv_channel(dlci)    (dlci >> 1)  argument
90 #define __dir(dlci)            (dlci & 0x01)  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()
814 static int rfcomm_send_sabm(struct rfcomm_session *s, u8 dlci)  in rfcomm_send_sabm()  argument
818 	BT_DBG("%p dlci %d", s, dlci);  in rfcomm_send_sabm()
820 	cmd.addr = __addr(s->initiator, dlci);  in rfcomm_send_sabm()
828 static int rfcomm_send_ua(struct rfcomm_session *s, u8 dlci)  in rfcomm_send_ua()  argument
832 	BT_DBG("%p dlci %d", s, dlci);  in rfcomm_send_ua()
834 	cmd.addr = __addr(!s->initiator, dlci);  in rfcomm_send_ua()
842 static int rfcomm_send_disc(struct rfcomm_session *s, u8 dlci)  in rfcomm_send_disc()  argument
846 	BT_DBG("%p dlci %d", s, dlci);  in rfcomm_send_disc()
848 	cmd.addr = __addr(s->initiator, dlci);  in rfcomm_send_disc()
861 	BT_DBG("dlc %p dlci %d", d, d->dlci);  in rfcomm_queue_disc()
878 static int rfcomm_send_dm(struct rfcomm_session *s, u8 dlci)  in rfcomm_send_dm()  argument
882 	BT_DBG("%p dlci %d", s, dlci);  in rfcomm_send_dm()
884 	cmd.addr = __addr(!s->initiator, dlci);  in rfcomm_send_dm()
924 	BT_DBG("%p cr %d dlci %d mtu %d", s, cr, d->dlci, d->mtu);  in rfcomm_send_pn()
936 	pn->dlci        = d->dlci;  in rfcomm_send_pn()
959 int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci,  in rfcomm_send_rpn()  argument
971 		s, cr, dlci, bit_rate, data_bits, stop_bits, parity,  in rfcomm_send_rpn()
984 	rpn->dlci          = __addr(1, dlci);  in rfcomm_send_rpn()
997 static int rfcomm_send_rls(struct rfcomm_session *s, int cr, u8 dlci, u8 status)  in rfcomm_send_rls()  argument
1016 	rls->dlci   = __addr(1, dlci);  in rfcomm_send_rls()
1024 static int rfcomm_send_msc(struct rfcomm_session *s, int cr, u8 dlci, u8 v24_sig)  in rfcomm_send_msc()  argument
1043 	msc->dlci    = __addr(1, dlci);  in rfcomm_send_msc()
1167 static struct rfcomm_session *rfcomm_recv_ua(struct rfcomm_session *s, u8 dlci)  in rfcomm_recv_ua()  argument
1169 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_ua()
1171 	if (dlci) {  in rfcomm_recv_ua()
1173 		struct rfcomm_dlc *d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_ua()
1175 			rfcomm_send_dm(s, dlci);  in rfcomm_recv_ua()
1188 			rfcomm_send_msc(s, 1, dlci, d->v24_sig);  in rfcomm_recv_ua()
1219 static struct rfcomm_session *rfcomm_recv_dm(struct rfcomm_session *s, u8 dlci)  in rfcomm_recv_dm()  argument
1223 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_dm()
1225 	if (dlci) {  in rfcomm_recv_dm()
1227 		struct rfcomm_dlc *d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_dm()
1249 					       u8 dlci)  in rfcomm_recv_disc()  argument
1253 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_disc()
1255 	if (dlci) {  in rfcomm_recv_disc()
1256 		struct rfcomm_dlc *d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_disc()
1258 			rfcomm_send_ua(s, dlci);  in rfcomm_recv_disc()
1268 			rfcomm_send_dm(s, dlci);  in rfcomm_recv_disc()
1290 	rfcomm_send_ua(d->session, d->dlci);  in rfcomm_dlc_accept()
1302 	rfcomm_send_msc(d->session, 1, d->dlci, d->v24_sig);  in rfcomm_dlc_accept()
1324 static int rfcomm_recv_sabm(struct rfcomm_session *s, u8 dlci)  in rfcomm_recv_sabm()  argument
1329 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_sabm()
1331 	if (!dlci) {  in rfcomm_recv_sabm()
1342 	d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_sabm()
1352 	channel = __srv_channel(dlci);  in rfcomm_recv_sabm()
1354 		d->dlci = dlci;  in rfcomm_recv_sabm()
1355 		d->addr = __addr(s->initiator, dlci);  in rfcomm_recv_sabm()
1360 		rfcomm_send_dm(s, dlci);  in rfcomm_recv_sabm()
1371 			d, d->state, d->dlci, pn->mtu, pn->flow_ctrl, pn->credits);  in rfcomm_apply_pn()
1399 	u8 dlci = pn->dlci;  in rfcomm_recv_pn()  local
1401 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_pn()
1403 	if (!dlci)  in rfcomm_recv_pn()
1406 	d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_pn()
1419 				rfcomm_send_sabm(s, d->dlci);  in rfcomm_recv_pn()
1424 		u8 channel = __srv_channel(dlci);  in rfcomm_recv_pn()
1432 			d->dlci = dlci;  in rfcomm_recv_pn()
1433 			d->addr = __addr(s->initiator, dlci);  in rfcomm_recv_pn()
1441 			rfcomm_send_dm(s, dlci);  in rfcomm_recv_pn()
1450 	u8 dlci = __get_dlci(rpn->dlci);  in rfcomm_recv_rpn()  local
1462 		dlci, cr, len, rpn->bit_rate, rpn->line_settings, rpn->flow_ctrl,  in rfcomm_recv_rpn()
1547 	rfcomm_send_rpn(s, 0, dlci, bit_rate, data_bits, stop_bits,  in rfcomm_recv_rpn()
1556 	u8 dlci = __get_dlci(rls->dlci);  in rfcomm_recv_rls()  local
1558 	BT_DBG("dlci %d cr %d status 0x%x", dlci, cr, rls->status);  in rfcomm_recv_rls()
1567 	rfcomm_send_rls(s, 0, dlci, rls->status);  in rfcomm_recv_rls()
1576 	u8 dlci = __get_dlci(msc->dlci);  in rfcomm_recv_msc()  local
1578 	BT_DBG("dlci %d cr %d v24 0x%x", dlci, cr, msc->v24_sig);  in rfcomm_recv_msc()
1580 	d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_msc()
1599 		rfcomm_send_msc(s, 0, dlci, msc->v24_sig);  in rfcomm_recv_msc()
1668 static int rfcomm_recv_data(struct rfcomm_session *s, u8 dlci, int pf, struct sk_buff *skb)  in rfcomm_recv_data()  argument
1672 	BT_DBG("session %p state %ld dlci %d pf %d", s, s->state, dlci, pf);  in rfcomm_recv_data()
1674 	d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_data()
1676 		rfcomm_send_dm(s, dlci);  in rfcomm_recv_data()
1705 	u8 type, dlci, fcs;  in rfcomm_recv_frame()  local
1713 	dlci = __get_dlci(hdr->addr);  in rfcomm_recv_frame()
1734 			rfcomm_recv_sabm(s, dlci);  in rfcomm_recv_frame()
1739 			s = rfcomm_recv_disc(s, dlci);  in rfcomm_recv_frame()
1744 			s = rfcomm_recv_ua(s, dlci);  in rfcomm_recv_frame()
1748 		s = rfcomm_recv_dm(s, dlci);  in rfcomm_recv_frame()
1752 		if (dlci) {  in rfcomm_recv_frame()
1753 			rfcomm_recv_data(s, dlci, __test_pf(hdr->ctrl), skb);  in rfcomm_recv_frame()
1801 		rfcomm_send_msc(d->session, 1, d->dlci, d->v24_sig);  in rfcomm_process_tx()
1877 				rfcomm_send_dm(s, d->dlci);  in rfcomm_process_dlcs()
2160 				   d->state, d->dlci, d->mtu,  in rfcomm_dlc_debugfs_show()