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Bluetooth: L2CAP: Fix calling sk_filter on non-socket based channel

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commit f19425641c upstream.

Only sockets will have the chan->data set to an actual sk, channels
like A2MP would have its own data which would likely cause a crash when
calling sk_filter, in order to fix this a new callback has been
introduced so channels can implement their own filtering if necessary.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Luiz Augusto von Dentz
2020-08-06 11:17:12 -07:00
committed by Greg Kroah-Hartman
parent 128278f444
commit 360f80e342
3 changed files with 20 additions and 3 deletions
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2
include/net/bluetooth/l2cap.h
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@@ -619,6 +619,8 @@ struct l2cap_ops {
struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan,
unsigned long hdr_len,
unsigned long len, int nb);
int (*filter) (struct l2cap_chan * chan,
struct sk_buff *skb);
};
struct l2cap_conn {