Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-30 16:11:38 +00:00
Code Issues Packages Projects Releases Wiki Activity

Bluetooth: Fix endianness issue with L2CAP MPS configuration

Browse Source 
Incoming configuration values must be converted to native CPU order
before use.  This fixes a bug where a little-endian MPS value is
compared to a native CPU value.  On big-endian processors, this
can cause ERTM and streaming mode segmentation to produce PDUs
that are larger than the remote stack is expecting, or that would
produce fragmented skbs that the current FCS code cannot handle.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Mat Martineau 2010-08-05 15:54:22 -07:00 committed by Marcel Holtmann
parent c4e9b56e24
commit 86b1b26326
1 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
net/bluetooth/l2cap.c
View File

@ -2705,8 +2705,9 @@ done:
case L2CAP_MODE_ERTM:
pi->remote_tx_win = rfc.txwin_size;
pi->remote_max_tx = rfc.max_transmit;
if (rfc.max_pdu_size > pi->conn->mtu - 10)
rfc.max_pdu_size = le16_to_cpu(pi->conn->mtu - 10);
if (le16_to_cpu(rfc.max_pdu_size) > pi->conn->mtu - 10)
rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);
pi->remote_mps = le16_to_cpu(rfc.max_pdu_size);
@ -2723,8 +2724,8 @@ done:
break;
case L2CAP_MODE_STREAMING:
if (rfc.max_pdu_size > pi->conn->mtu - 10)
rfc.max_pdu_size = le16_to_cpu(pi->conn->mtu - 10);
if (le16_to_cpu(rfc.max_pdu_size) > pi->conn->mtu - 10)
rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);
pi->remote_mps = le16_to_cpu(rfc.max_pdu_size);