mac80211: Don't use a buf_size=0 in ADDBA requests

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According to 802.11-2007, 7.3.1.14 it is compliant to use a buf_size of
0 in ADDBA requests. But some devices (AVM Fritz Stick N) arn't able to
handle that correctly and will reply with an ADDBA reponse with a
buf_size of 0 which in turn will disallow BA sessions for these
devices.

To work around this problem, initialize hw.max_tx_aggregation_subframes
to the maximum AMPDU buffer size 0x40.

Using 0 as default for the bufsize was introduced in commit
5dd36bc933 (mac80211: allow advertising
correct maximum aggregate size).

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

...

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Helmut Schaa 2011-08-05 11:46:19 +02:00 • committed by John W. Linville

parent 3ca97880ea

commit 39e68712d7

1 changed files with 1 additions and 0 deletions

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net/mac80211/main.c

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