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- From: Linus Lüssing <[email protected]>
- Date: Wed, 5 Feb 2020 20:10:43 +0100
- Subject: ath10k: increase rx buffer size to 2048
- Before, only frames with a maximum size of 1528 bytes could be
- transmitted between two 802.11s nodes.
- For batman-adv for instance, which adds its own header to each frame,
- we typically need an MTU of at least 1532 bytes to be able to transmit
- without fragmentation.
- This patch now increases the maxmimum frame size from 1528 to 1656
- bytes.
- Tested with two ath10k devices in 802.11s mode, as well as with
- batman-adv on top of 802.11s with forwarding disabled.
- Fix originally found and developed by Ben Greear.
- Link: https://github.com/greearb/ath10k-ct/issues/89
- Link: https://github.com/greearb/ath10k-ct/commit/9e5ab25027e0971fa24ccf93373324c08c4e992d
- Cc: Ben Greear <[email protected]>
- Signed-off-by: Linus Lüssing <[email protected]>
- Forwarded: https://patchwork.kernel.org/patch/11367055/
- --- a/drivers/net/wireless/ath/ath10k/htt.h
- +++ b/drivers/net/wireless/ath/ath10k/htt.h
- @@ -2228,7 +2228,7 @@ struct htt_rx_chan_info {
- * Should be: sizeof(struct htt_host_rx_desc) + max rx MSDU size,
- * rounded up to a cache line size.
- */
- -#define HTT_RX_BUF_SIZE 1920
- +#define HTT_RX_BUF_SIZE 2048
- #define HTT_RX_MSDU_SIZE (HTT_RX_BUF_SIZE - (int)sizeof(struct htt_rx_desc))
-
- /* Refill a bunch of RX buffers for each refill round so that FW/HW can handle
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