2020-02-05 19:10:43 +00:00
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From: Linus Lüssing <ll@simonwunderlich.de>
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Date: Wed, 5 Feb 2020 20:10:43 +0100
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Subject: ath10k: increase rx buffer size to 2048
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Before, only frames with a maximum size of 1528 bytes could be
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transmitted between two 802.11s nodes.
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For batman-adv for instance, which adds its own header to each frame,
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we typically need an MTU of at least 1532 bytes to be able to transmit
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without fragmentation.
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This patch now increases the maxmimum frame size from 1528 to 1656
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bytes.
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Tested with two ath10k devices in 802.11s mode, as well as with
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batman-adv on top of 802.11s with forwarding disabled.
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Fix originally found and developed by Ben Greear.
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Link: https://github.com/greearb/ath10k-ct/issues/89
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Link: https://github.com/greearb/ath10k-ct/commit/9e5ab25027e0971fa24ccf93373324c08c4e992d
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Cc: Ben Greear <greearb@candelatech.com>
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Signed-off-by: Linus Lüssing <ll@simonwunderlich.de>
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Forwarded: https://patchwork.kernel.org/patch/11367055/
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--- a/drivers/net/wireless/ath/ath10k/htt.h
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+++ b/drivers/net/wireless/ath/ath10k/htt.h
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2020-06-20 21:11:17 +00:00
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@@ -2242,7 +2242,7 @@ struct htt_rx_chan_info {
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2020-02-05 19:10:43 +00:00
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* Should be: sizeof(struct htt_host_rx_desc) + max rx MSDU size,
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* rounded up to a cache line size.
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*/
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-#define HTT_RX_BUF_SIZE 1920
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+#define HTT_RX_BUF_SIZE 2048
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#define HTT_RX_MSDU_SIZE (HTT_RX_BUF_SIZE - (int)sizeof(struct htt_rx_desc))
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/* Refill a bunch of RX buffers for each refill round so that FW/HW can handle
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