diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 06b072f..6fc7698 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -27,8 +27,9 @@
 
 /* L2CAP defaults */
 #define L2CAP_DEFAULT_MTU		672
+#define L2CAP_DEFAULT_MIN_MTU		48
 #define L2CAP_DEFAULT_FLUSH_TO		0xffff
-#define L2CAP_DEFAULT_RX_WINDOW		1
+#define L2CAP_DEFAULT_TX_WINDOW		1
 #define L2CAP_DEFAULT_MAX_RECEIVE	1
 #define L2CAP_DEFAULT_RETRANS_TO	300    /* 300 milliseconds */
 #define L2CAP_DEFAULT_MONITOR_TO	1000   /* 1 second */
@@ -272,6 +273,9 @@
 	__u16		omtu;
 	__u16		flush_to;
 	__u8		mode;
+	__u8		num_conf_req;
+	__u8		num_conf_rsp;
+
 	__u8		fcs;
 	__u8		sec_level;
 	__u8		role_switch;
@@ -280,10 +284,15 @@
 	__u8		conf_req[64];
 	__u8		conf_len;
 	__u8		conf_state;
-	__u8		conf_retry;
 
 	__u8		ident;
 
+	__u8		remote_tx_win;
+	__u8		remote_max_tx;
+	__u16		retrans_timeout;
+	__u16		monitor_timeout;
+	__u16		max_pdu_size;
+
 	__le16		sport;
 
 	struct l2cap_conn	*conn;
@@ -291,12 +300,17 @@
 	struct sock		*prev_c;
 };
 
-#define L2CAP_CONF_REQ_SENT	0x01
-#define L2CAP_CONF_INPUT_DONE	0x02
-#define L2CAP_CONF_OUTPUT_DONE	0x04
-#define L2CAP_CONF_CONNECT_PEND	0x80
+#define L2CAP_CONF_REQ_SENT       0x01
+#define L2CAP_CONF_INPUT_DONE     0x02
+#define L2CAP_CONF_OUTPUT_DONE    0x04
+#define L2CAP_CONF_MTU_DONE       0x08
+#define L2CAP_CONF_MODE_DONE      0x10
+#define L2CAP_CONF_CONNECT_PEND   0x20
+#define L2CAP_CONF_STATE2_DEVICE  0x80
 
-#define L2CAP_CONF_MAX_RETRIES	2
+#define L2CAP_CONF_MAX_CONF_REQ 2
+#define L2CAP_CONF_MAX_CONF_RSP 2
+
 
 void l2cap_load(void);
 
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 7ce1a24..af0fbf9 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -966,6 +966,7 @@
 	case L2CAP_MODE_BASIC:
 		break;
 	case L2CAP_MODE_ERTM:
+	case L2CAP_MODE_STREAMING:
 		if (enable_ertm)
 			break;
 		/* fall through */
@@ -1029,6 +1030,7 @@
 	case L2CAP_MODE_BASIC:
 		break;
 	case L2CAP_MODE_ERTM:
+	case L2CAP_MODE_STREAMING:
 		if (enable_ertm)
 			break;
 		/* fall through */
@@ -1739,15 +1741,65 @@
 	*ptr += L2CAP_CONF_OPT_SIZE + len;
 }
 
+static int l2cap_mode_supported(__u8 mode, __u32 feat_mask)
+{
+	u32 local_feat_mask = l2cap_feat_mask;
+	if (enable_ertm)
+		local_feat_mask |= L2CAP_FEAT_ERTM;
+
+	switch (mode) {
+	case L2CAP_MODE_ERTM:
+		return L2CAP_FEAT_ERTM & feat_mask & local_feat_mask;
+	case L2CAP_MODE_STREAMING:
+		return L2CAP_FEAT_STREAMING & feat_mask & local_feat_mask;
+	default:
+		return 0x00;
+	}
+}
+
+static inline __u8 l2cap_select_mode(__u8 mode, __u16 remote_feat_mask)
+{
+	switch (mode) {
+	case L2CAP_MODE_STREAMING:
+	case L2CAP_MODE_ERTM:
+		if (l2cap_mode_supported(mode, remote_feat_mask))
+			return mode;
+		/* fall through */
+	default:
+		return L2CAP_MODE_BASIC;
+	}
+}
+
 static int l2cap_build_conf_req(struct sock *sk, void *data)
 {
 	struct l2cap_pinfo *pi = l2cap_pi(sk);
 	struct l2cap_conf_req *req = data;
-	struct l2cap_conf_rfc rfc = { .mode = L2CAP_MODE_BASIC };
+	struct l2cap_conf_rfc rfc = { .mode = L2CAP_MODE_ERTM };
 	void *ptr = req->data;
 
 	BT_DBG("sk %p", sk);
 
+	if (pi->num_conf_req || pi->num_conf_rsp)
+		goto done;
+
+	switch (pi->mode) {
+	case L2CAP_MODE_STREAMING:
+	case L2CAP_MODE_ERTM:
+		pi->conf_state |= L2CAP_CONF_STATE2_DEVICE;
+		if (!l2cap_mode_supported(pi->mode, pi->conn->feat_mask)) {
+			struct l2cap_disconn_req req;
+			req.dcid = cpu_to_le16(pi->dcid);
+			req.scid = cpu_to_le16(pi->scid);
+			l2cap_send_cmd(pi->conn, l2cap_get_ident(pi->conn),
+					L2CAP_DISCONN_REQ, sizeof(req), &req);
+		}
+		break;
+	default:
+		pi->mode = l2cap_select_mode(rfc.mode, pi->conn->feat_mask);
+		break;
+	}
+
+done:
 	switch (pi->mode) {
 	case L2CAP_MODE_BASIC:
 		if (pi->imtu != L2CAP_DEFAULT_MTU)
@@ -1756,10 +1808,22 @@
 
 	case L2CAP_MODE_ERTM:
 		rfc.mode            = L2CAP_MODE_ERTM;
-		rfc.txwin_size      = L2CAP_DEFAULT_RX_WINDOW;
+		rfc.txwin_size      = L2CAP_DEFAULT_TX_WINDOW;
 		rfc.max_transmit    = L2CAP_DEFAULT_MAX_RECEIVE;
-		rfc.retrans_timeout = cpu_to_le16(L2CAP_DEFAULT_RETRANS_TO);
-		rfc.monitor_timeout = cpu_to_le16(L2CAP_DEFAULT_MONITOR_TO);
+		rfc.retrans_timeout = 0;
+		rfc.monitor_timeout = 0;
+		rfc.max_pdu_size    = cpu_to_le16(L2CAP_DEFAULT_MAX_RX_APDU);
+
+		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+					sizeof(rfc), (unsigned long) &rfc);
+		break;
+
+	case L2CAP_MODE_STREAMING:
+		rfc.mode            = L2CAP_MODE_STREAMING;
+		rfc.txwin_size      = 0;
+		rfc.max_transmit    = 0;
+		rfc.retrans_timeout = 0;
+		rfc.monitor_timeout = 0;
 		rfc.max_pdu_size    = cpu_to_le16(L2CAP_DEFAULT_MAX_RX_APDU);
 
 		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
@@ -1825,30 +1889,83 @@
 		}
 	}
 
+	if (pi->num_conf_rsp || pi->num_conf_req)
+		goto done;
+
+	switch (pi->mode) {
+	case L2CAP_MODE_STREAMING:
+	case L2CAP_MODE_ERTM:
+		pi->conf_state |= L2CAP_CONF_STATE2_DEVICE;
+		if (!l2cap_mode_supported(pi->mode, pi->conn->feat_mask))
+			return -ECONNREFUSED;
+		break;
+	default:
+		pi->mode = l2cap_select_mode(rfc.mode, pi->conn->feat_mask);
+		break;
+	}
+
+done:
+	if (pi->mode != rfc.mode) {
+		result = L2CAP_CONF_UNACCEPT;
+		rfc.mode = pi->mode;
+
+		if (pi->num_conf_rsp == 1)
+			return -ECONNREFUSED;
+
+		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+					sizeof(rfc), (unsigned long) &rfc);
+	}
+
+
 	if (result == L2CAP_CONF_SUCCESS) {
 		/* Configure output options and let the other side know
 		 * which ones we don't like. */
 
-		if (rfc.mode == L2CAP_MODE_BASIC) {
-			if (mtu < pi->omtu)
-				result = L2CAP_CONF_UNACCEPT;
-			else {
-				pi->omtu = mtu;
-				pi->conf_state |= L2CAP_CONF_OUTPUT_DONE;
-			}
+		if (mtu < L2CAP_DEFAULT_MIN_MTU)
+			result = L2CAP_CONF_UNACCEPT;
+		else {
+			pi->omtu = mtu;
+			pi->conf_state |= L2CAP_CONF_MTU_DONE;
+		}
+		l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->omtu);
 
-			l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->omtu);
-		} else {
+		switch (rfc.mode) {
+		case L2CAP_MODE_BASIC:
+			pi->fcs = L2CAP_FCS_NONE;
+			pi->conf_state |= L2CAP_CONF_MODE_DONE;
+			break;
+
+		case L2CAP_MODE_ERTM:
+			pi->remote_tx_win = rfc.txwin_size;
+			pi->remote_max_tx = rfc.max_transmit;
+			pi->max_pdu_size = rfc.max_pdu_size;
+
+			rfc.retrans_timeout = L2CAP_DEFAULT_RETRANS_TO;
+			rfc.monitor_timeout = L2CAP_DEFAULT_MONITOR_TO;
+
+			pi->conf_state |= L2CAP_CONF_MODE_DONE;
+			break;
+
+		case L2CAP_MODE_STREAMING:
+			pi->remote_tx_win = rfc.txwin_size;
+			pi->max_pdu_size = rfc.max_pdu_size;
+
+			pi->conf_state |= L2CAP_CONF_MODE_DONE;
+			break;
+
+		default:
 			result = L2CAP_CONF_UNACCEPT;
 
 			memset(&rfc, 0, sizeof(rfc));
-			rfc.mode = L2CAP_MODE_BASIC;
-
-			l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
-					sizeof(rfc), (unsigned long) &rfc);
+			rfc.mode = pi->mode;
 		}
-	}
 
+		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+					sizeof(rfc), (unsigned long) &rfc);
+
+		if (result == L2CAP_CONF_SUCCESS)
+			pi->conf_state |= L2CAP_CONF_OUTPUT_DONE;
+	}
 	rsp->scid   = cpu_to_le16(pi->dcid);
 	rsp->result = cpu_to_le16(result);
 	rsp->flags  = cpu_to_le16(0x0000);
@@ -1856,6 +1973,73 @@
 	return ptr - data;
 }
 
+static int l2cap_parse_conf_rsp(struct sock *sk, void *rsp, int len, void *data, u16 *result)
+{
+	struct l2cap_pinfo *pi = l2cap_pi(sk);
+	struct l2cap_conf_req *req = data;
+	void *ptr = req->data;
+	int type, olen;
+	unsigned long val;
+	struct l2cap_conf_rfc rfc;
+
+	BT_DBG("sk %p, rsp %p, len %d, req %p", sk, rsp, len, data);
+
+	while (len >= L2CAP_CONF_OPT_SIZE) {
+		len -= l2cap_get_conf_opt(&rsp, &type, &olen, &val);
+
+		switch (type) {
+		case L2CAP_CONF_MTU:
+			if (val < L2CAP_DEFAULT_MIN_MTU) {
+				*result = L2CAP_CONF_UNACCEPT;
+				pi->omtu = L2CAP_DEFAULT_MIN_MTU;
+			} else
+				pi->omtu = val;
+			l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->omtu);
+			break;
+
+		case L2CAP_CONF_FLUSH_TO:
+			pi->flush_to = val;
+			l2cap_add_conf_opt(&ptr, L2CAP_CONF_FLUSH_TO,
+							2, pi->flush_to);
+			break;
+
+		case L2CAP_CONF_RFC:
+			if (olen == sizeof(rfc))
+				memcpy(&rfc, (void *)val, olen);
+
+			if ((pi->conf_state & L2CAP_CONF_STATE2_DEVICE) &&
+							rfc.mode != pi->mode)
+				return -ECONNREFUSED;
+
+			pi->mode = rfc.mode;
+			pi->fcs = 0;
+
+			l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+					sizeof(rfc), (unsigned long) &rfc);
+			break;
+		}
+	}
+
+	if (*result == L2CAP_CONF_SUCCESS) {
+		switch (rfc.mode) {
+		case L2CAP_MODE_ERTM:
+			pi->remote_tx_win   = rfc.txwin_size;
+			pi->retrans_timeout = rfc.retrans_timeout;
+			pi->monitor_timeout = rfc.monitor_timeout;
+			pi->max_pdu_size    = le16_to_cpu(rfc.max_pdu_size);
+			break;
+		case L2CAP_MODE_STREAMING:
+			pi->max_pdu_size    = le16_to_cpu(rfc.max_pdu_size);
+			break;
+		}
+	}
+
+	req->dcid   = cpu_to_le16(pi->dcid);
+	req->flags  = cpu_to_le16(0x0000);
+
+	return ptr - data;
+}
+
 static int l2cap_build_conf_rsp(struct sock *sk, void *data, u16 result, u16 flags)
 {
 	struct l2cap_conf_rsp *rsp = data;
@@ -2042,6 +2226,7 @@
 
 		l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
 					l2cap_build_conf_req(sk, req), req);
+		l2cap_pi(sk)->num_conf_req++;
 		break;
 
 	case L2CAP_CR_PEND:
@@ -2100,10 +2285,17 @@
 
 	/* Complete config. */
 	len = l2cap_parse_conf_req(sk, rsp);
-	if (len < 0)
+	if (len < 0) {
+		struct l2cap_disconn_req req;
+		req.dcid = cpu_to_le16(l2cap_pi(sk)->dcid);
+		req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
+		l2cap_send_cmd(conn, l2cap_get_ident(conn),
+					L2CAP_DISCONN_REQ, sizeof(req), &req);
 		goto unlock;
+	}
 
 	l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP, len, rsp);
+	l2cap_pi(sk)->num_conf_rsp++;
 
 	/* Reset config buffer. */
 	l2cap_pi(sk)->conf_len = 0;
@@ -2121,6 +2313,7 @@
 		u8 buf[64];
 		l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
 					l2cap_build_conf_req(sk, buf), buf);
+		l2cap_pi(sk)->num_conf_req++;
 	}
 
 unlock:
@@ -2150,16 +2343,29 @@
 		break;
 
 	case L2CAP_CONF_UNACCEPT:
-		if (++l2cap_pi(sk)->conf_retry < L2CAP_CONF_MAX_RETRIES) {
-			char req[128];
-			/* It does not make sense to adjust L2CAP parameters
-			 * that are currently defined in the spec. We simply
-			 * resend config request that we sent earlier. It is
-			 * stupid, but it helps qualification testing which
-			 * expects at least some response from us. */
-			l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
-						l2cap_build_conf_req(sk, req), req);
-			goto done;
+		if (l2cap_pi(sk)->num_conf_rsp <= L2CAP_CONF_MAX_CONF_RSP) {
+			int len = cmd->len - sizeof(*rsp);
+			char req[64];
+
+			/* throw out any old stored conf requests */
+			result = L2CAP_CONF_SUCCESS;
+			len = l2cap_parse_conf_rsp(sk, rsp->data,
+							len, req, &result);
+			if (len < 0) {
+				struct l2cap_disconn_req req;
+				req.dcid = cpu_to_le16(l2cap_pi(sk)->dcid);
+				req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
+				l2cap_send_cmd(conn, l2cap_get_ident(conn),
+					L2CAP_DISCONN_REQ, sizeof(req), &req);
+				goto done;
+			}
+
+			l2cap_send_cmd(conn, l2cap_get_ident(conn),
+						L2CAP_CONF_REQ, len, req);
+			l2cap_pi(sk)->num_conf_req++;
+			if (result != L2CAP_CONF_SUCCESS)
+				goto done;
+			break;
 		}
 
 	default: