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Bluetooth: L2CAP: Fix handling fragmented length

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Bluetooth Core Specification v5.2, Vol. 3, Part A, section 1.4, table
1.1:

 'Start Fragments always either begin with the first octet of the Basic
  L2CAP header of a PDU or they have a length of zero (see [Vol 2] Part
  B, Section 6.6.2).'

Apparently this was changed by the following errata:

https://www.bluetooth.org/tse/errata_view.cfm?errata_id=10216

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Luiz Augusto von Dentz
2021-01-25 19:26:33 +01:00
committed by Marcel Holtmann
parent 5ff20cbe67
commit 4d7ea8ee90
2 changed files with 94 additions and 25 deletions
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include/net/bluetooth/l2cap.h
+1
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@@ -207,6 +207,7 @@ struct l2cap_hdr {
__le16 len;
__le16 cid;
} __packed;
#define L2CAP_LEN_SIZE 2
#define L2CAP_HDR_SIZE 4
#define L2CAP_ENH_HDR_SIZE 6
#define L2CAP_EXT_HDR_SIZE 8