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rt2x00: rt2800usb: limit tx queues length

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TX status fifo is limited to 16 elements. When we send more frames than
that, we can easily loose status, what is not good for rate scaling
algorithm.

On my testing the change does not degrade performance, actually make
is slightly better. Additionally with the patch I can see much less
various rt2x00 warnings in dmesg.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stanislaw Gruszka 2012-03-14 11:16:21 +01:00 committed by John W. Linville
parent 5f8f718ae1
commit 0d9be8a4b7
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/rt2x00/rt2800usb.c
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@ -870,7 +870,7 @@ static const struct data_queue_desc rt2800usb_queue_rx = {
};
static const struct data_queue_desc rt2800usb_queue_tx = {
.entry_num = 64,
.entry_num = 16,
.data_size = AGGREGATION_SIZE,
.desc_size = TXINFO_DESC_SIZE + TXWI_DESC_SIZE,
.priv_size = sizeof(struct queue_entry_priv_usb),