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()
508 	BT_DBG("dlc %p state %ld dlci %d err %d", d, d->state, d->dlci, err);  in rfcomm_dlc_close()
540 	u8 dlci;  in rfcomm_dlc_exists()  local
548 		dlci = __dlci(__session_dir(s), channel);  in rfcomm_dlc_exists()
549 		dlc = rfcomm_dlc_get(s, dlci);  in rfcomm_dlc_exists()
813 static int rfcomm_send_sabm(struct rfcomm_session *s, u8 dlci)  in rfcomm_send_sabm()  argument
817 	BT_DBG("%p dlci %d", s, dlci);  in rfcomm_send_sabm()
819 	cmd.addr = __addr(s->initiator, dlci);  in rfcomm_send_sabm()
827 static int rfcomm_send_ua(struct rfcomm_session *s, u8 dlci)  in rfcomm_send_ua()  argument
831 	BT_DBG("%p dlci %d", s, dlci);  in rfcomm_send_ua()
833 	cmd.addr = __addr(!s->initiator, dlci);  in rfcomm_send_ua()
841 static int rfcomm_send_disc(struct rfcomm_session *s, u8 dlci)  in rfcomm_send_disc()  argument
845 	BT_DBG("%p dlci %d", s, dlci);  in rfcomm_send_disc()
847 	cmd.addr = __addr(s->initiator, dlci);  in rfcomm_send_disc()
860 	BT_DBG("dlc %p dlci %d", d, d->dlci);  in rfcomm_queue_disc()
877 static int rfcomm_send_dm(struct rfcomm_session *s, u8 dlci)  in rfcomm_send_dm()  argument
881 	BT_DBG("%p dlci %d", s, dlci);  in rfcomm_send_dm()
883 	cmd.addr = __addr(!s->initiator, dlci);  in rfcomm_send_dm()
923 	BT_DBG("%p cr %d dlci %d mtu %d", s, cr, d->dlci, d->mtu);  in rfcomm_send_pn()
935 	pn->dlci        = d->dlci;  in rfcomm_send_pn()
958 int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci,  in rfcomm_send_rpn()  argument
970 		s, cr, dlci, bit_rate, data_bits, stop_bits, parity,  in rfcomm_send_rpn()
983 	rpn->dlci          = __addr(1, dlci);  in rfcomm_send_rpn()
996 static int rfcomm_send_rls(struct rfcomm_session *s, int cr, u8 dlci, u8 status)  in rfcomm_send_rls()  argument
1015 	rls->dlci   = __addr(1, dlci);  in rfcomm_send_rls()
1023 static int rfcomm_send_msc(struct rfcomm_session *s, int cr, u8 dlci, u8 v24_sig)  in rfcomm_send_msc()  argument
1042 	msc->dlci    = __addr(1, dlci);  in rfcomm_send_msc()
1166 static struct rfcomm_session *rfcomm_recv_ua(struct rfcomm_session *s, u8 dlci)  in rfcomm_recv_ua()  argument
1168 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_ua()
1170 	if (dlci) {  in rfcomm_recv_ua()
1172 		struct rfcomm_dlc *d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_ua()
1174 			rfcomm_send_dm(s, dlci);  in rfcomm_recv_ua()
1187 			rfcomm_send_msc(s, 1, dlci, d->v24_sig);  in rfcomm_recv_ua()
1218 static struct rfcomm_session *rfcomm_recv_dm(struct rfcomm_session *s, u8 dlci)  in rfcomm_recv_dm()  argument
1222 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_dm()
1224 	if (dlci) {  in rfcomm_recv_dm()
1226 		struct rfcomm_dlc *d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_dm()
1248 					       u8 dlci)  in rfcomm_recv_disc()  argument
1252 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_disc()
1254 	if (dlci) {  in rfcomm_recv_disc()
1255 		struct rfcomm_dlc *d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_disc()
1257 			rfcomm_send_ua(s, dlci);  in rfcomm_recv_disc()
1267 			rfcomm_send_dm(s, dlci);  in rfcomm_recv_disc()
1289 	rfcomm_send_ua(d->session, d->dlci);  in rfcomm_dlc_accept()
1301 	rfcomm_send_msc(d->session, 1, d->dlci, d->v24_sig);  in rfcomm_dlc_accept()
1323 static int rfcomm_recv_sabm(struct rfcomm_session *s, u8 dlci)  in rfcomm_recv_sabm()  argument
1328 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_sabm()
1330 	if (!dlci) {  in rfcomm_recv_sabm()
1341 	d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_sabm()
1351 	channel = __srv_channel(dlci);  in rfcomm_recv_sabm()
1353 		d->dlci = dlci;  in rfcomm_recv_sabm()
1354 		d->addr = __addr(s->initiator, dlci);  in rfcomm_recv_sabm()
1359 		rfcomm_send_dm(s, dlci);  in rfcomm_recv_sabm()
1370 			d, d->state, d->dlci, pn->mtu, pn->flow_ctrl, pn->credits);  in rfcomm_apply_pn()
1398 	u8 dlci = pn->dlci;  in rfcomm_recv_pn()  local
1400 	BT_DBG("session %p state %ld dlci %d", s, s->state, dlci);  in rfcomm_recv_pn()
1402 	if (!dlci)  in rfcomm_recv_pn()
1405 	d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_pn()
1418 				rfcomm_send_sabm(s, d->dlci);  in rfcomm_recv_pn()
1423 		u8 channel = __srv_channel(dlci);  in rfcomm_recv_pn()
1431 			d->dlci = dlci;  in rfcomm_recv_pn()
1432 			d->addr = __addr(s->initiator, dlci);  in rfcomm_recv_pn()
1440 			rfcomm_send_dm(s, dlci);  in rfcomm_recv_pn()
1449 	u8 dlci = __get_dlci(rpn->dlci);  in rfcomm_recv_rpn()  local
1461 		dlci, cr, len, rpn->bit_rate, rpn->line_settings, rpn->flow_ctrl,  in rfcomm_recv_rpn()
1546 	rfcomm_send_rpn(s, 0, dlci, bit_rate, data_bits, stop_bits,  in rfcomm_recv_rpn()
1555 	u8 dlci = __get_dlci(rls->dlci);  in rfcomm_recv_rls()  local
1557 	BT_DBG("dlci %d cr %d status 0x%x", dlci, cr, rls->status);  in rfcomm_recv_rls()
1566 	rfcomm_send_rls(s, 0, dlci, rls->status);  in rfcomm_recv_rls()
1575 	u8 dlci = __get_dlci(msc->dlci);  in rfcomm_recv_msc()  local
1577 	BT_DBG("dlci %d cr %d v24 0x%x", dlci, cr, msc->v24_sig);  in rfcomm_recv_msc()
1579 	d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_msc()
1598 		rfcomm_send_msc(s, 0, dlci, msc->v24_sig);  in rfcomm_recv_msc()
1667 static int rfcomm_recv_data(struct rfcomm_session *s, u8 dlci, int pf, struct sk_buff *skb)  in rfcomm_recv_data()  argument
1671 	BT_DBG("session %p state %ld dlci %d pf %d", s, s->state, dlci, pf);  in rfcomm_recv_data()
1673 	d = rfcomm_dlc_get(s, dlci);  in rfcomm_recv_data()
1675 		rfcomm_send_dm(s, dlci);  in rfcomm_recv_data()
1704 	u8 type, dlci, fcs;  in rfcomm_recv_frame()  local
1712 	dlci = __get_dlci(hdr->addr);  in rfcomm_recv_frame()
1733 			rfcomm_recv_sabm(s, dlci);  in rfcomm_recv_frame()
1738 			s = rfcomm_recv_disc(s, dlci);  in rfcomm_recv_frame()
1743 			s = rfcomm_recv_ua(s, dlci);  in rfcomm_recv_frame()
1747 		s = rfcomm_recv_dm(s, dlci);  in rfcomm_recv_frame()
1751 		if (dlci) {  in rfcomm_recv_frame()
1752 			rfcomm_recv_data(s, dlci, __test_pf(hdr->ctrl), skb);  in rfcomm_recv_frame()
1800 		rfcomm_send_msc(d->session, 1, d->dlci, d->v24_sig);  in rfcomm_process_tx()
1876 				rfcomm_send_dm(s, d->dlci);  in rfcomm_process_dlcs()
2159 				   d->state, d->dlci, d->mtu,  in rfcomm_dlc_debugfs_show()