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Bluetooth: Don't send RFC for Basic Mode if only it is supported

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If the remote side doesn't support Enhanced Retransmission Mode neither
Streaming Mode, we shall not send the RFC option.

Some devices that only supports Basic Mode do not understanding the RFC
option. This patch fixes the regression found with these devices.

Signed-off-by: Gustavo F. Padovan <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>
This commit is contained in:
Gustavo F. Padovan 2010-08-03 23:49:29 -03:00 • committed by Marcel Holtmann
commit 6340650400
1 changed files with 12 additions and 3 deletions
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15
net/bluetooth/l2cap.c
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@ -2527,6 +2527,10 @@ done:
if (pi->imtu != L2CAP_DEFAULT_MTU)
l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->imtu);
if (!(pi->conn->feat_mask & L2CAP_FEAT_ERTM) &&
!(pi->conn->feat_mask & L2CAP_FEAT_STREAMING))
break;
rfc.mode = L2CAP_MODE_BASIC;
rfc.txwin_size = 0;
rfc.max_transmit = 0;
@ -2534,6 +2538,8 @@ done:
rfc.monitor_timeout = 0;
rfc.max_pdu_size = 0;
l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
(unsigned long) &rfc);
break;
case L2CAP_MODE_ERTM:
@ -2546,6 +2552,9 @@ done:
if (L2CAP_DEFAULT_MAX_PDU_SIZE > pi->conn->mtu - 10)
rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);
l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
(unsigned long) &rfc);
if (!(pi->conn->feat_mask & L2CAP_FEAT_FCS))
break;
@ -2566,6 +2575,9 @@ done:
if (L2CAP_DEFAULT_MAX_PDU_SIZE > pi->conn->mtu - 10)
rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);
l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
(unsigned long) &rfc);
if (!(pi->conn->feat_mask & L2CAP_FEAT_FCS))
break;
@ -2577,9 +2589,6 @@ done:
break;
}
l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
(unsigned long) &rfc);
/* FIXME: Need actual value of the flush timeout */
//if (flush_to != L2CAP_DEFAULT_FLUSH_TO)
// l2cap_add_conf_opt(&ptr, L2CAP_CONF_FLUSH_TO, 2, pi->flush_to);