Commit d1daa091 authored by Gustavo Padovan's avatar Gustavo Padovan Committed by Marcel Holtmann
Browse files

Bluetooth: Fix ACL MTU issue 



ERTM and Streaming Modes was having problems when the ACL MTU is lower
than MPS. The 'minus 10' is to take in account the header and fcs
lenghts.

Signed-off-by: default avatarGustavo F. Padovan <padovan@profusion.mobi>
Reviewed-by: default avatarJoão Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 7dffe421

net/bluetooth/l2cap.c

+4 −0
Original line number Diff line number Diff line
@@ -2267,6 +2267,8 @@ static int l2cap_build_conf_req(struct sock *sk, void *data) 
		rfc.retrans_timeout = 0;

		rfc.monitor_timeout = 0;

		rfc.max_pdu_size    = cpu_to_le16(L2CAP_DEFAULT_MAX_PDU_SIZE);

		if (L2CAP_DEFAULT_MAX_PDU_SIZE > pi->conn->mtu - 10)

			rfc.max_pdu_size = pi->conn->mtu - 10;



		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,

					sizeof(rfc), (unsigned long) &rfc);
@@ -2288,6 +2290,8 @@ static int l2cap_build_conf_req(struct sock *sk, void *data) 
		rfc.retrans_timeout = 0;

		rfc.monitor_timeout = 0;

		rfc.max_pdu_size    = cpu_to_le16(L2CAP_DEFAULT_MAX_PDU_SIZE);

		if (L2CAP_DEFAULT_MAX_PDU_SIZE > pi->conn->mtu - 10)

			rfc.max_pdu_size = pi->conn->mtu - 10;



		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,

					sizeof(rfc), (unsigned long) &rfc);