| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | From: Linus Lüssing <ll@simonwunderlich.de> |
| 2 | Date: Wed, 5 Feb 2020 20:10:43 +0100 |
| 3 | Subject: ath10k: increase rx buffer size to 2048 |
| 4 | |
| 5 | Before, only frames with a maximum size of 1528 bytes could be |
| 6 | transmitted between two 802.11s nodes. |
| 7 | |
| 8 | For batman-adv for instance, which adds its own header to each frame, |
| 9 | we typically need an MTU of at least 1532 bytes to be able to transmit |
| 10 | without fragmentation. |
| 11 | |
| 12 | This patch now increases the maxmimum frame size from 1528 to 1656 |
| 13 | bytes. |
| 14 | |
| 15 | Tested with two ath10k devices in 802.11s mode, as well as with |
| 16 | batman-adv on top of 802.11s with forwarding disabled. |
| 17 | |
| 18 | Fix originally found and developed by Ben Greear. |
| 19 | |
| 20 | Link: https://github.com/greearb/ath10k-ct/issues/89 |
| 21 | Link: https://github.com/greearb/ath10k-ct/commit/9e5ab25027e0971fa24ccf93373324c08c4e992d |
| 22 | Cc: Ben Greear <greearb@candelatech.com> |
| 23 | Signed-off-by: Linus Lüssing <ll@simonwunderlich.de> |
| 24 | |
| 25 | Forwarded: https://patchwork.kernel.org/patch/11367055/ |
| 26 | |
| 27 | --- a/drivers/net/wireless/ath/ath10k/htt.h |
| 28 | +++ b/drivers/net/wireless/ath/ath10k/htt.h |
| 29 | @@ -2243,7 +2243,7 @@ struct htt_rx_chan_info { |
| 30 | * Should be: sizeof(struct htt_host_rx_desc) + max rx MSDU size, |
| 31 | * rounded up to a cache line size. |
| 32 | */ |
| 33 | -#define HTT_RX_BUF_SIZE 1920 |
| 34 | +#define HTT_RX_BUF_SIZE 2048 |
| 35 | #define HTT_RX_MSDU_SIZE (HTT_RX_BUF_SIZE - (int)sizeof(struct htt_rx_desc)) |
| 36 | |
| 37 | /* Refill a bunch of RX buffers for each refill round so that FW/HW can handle |