| From: Linus Lüssing <ll@simonwunderlich.de> |
| 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 <greearb@candelatech.com> |
| Signed-off-by: Linus Lüssing <ll@simonwunderlich.de> |
| |
| Forwarded: https://patchwork.kernel.org/patch/11367055/ |
| |
| --- a/drivers/net/wireless/ath/ath10k/htt.h |
| +++ b/drivers/net/wireless/ath/ath10k/htt.h |
| @@ -2243,7 +2243,7 @@ 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 |