diff mbox series

[2/5] rtw89: correct setting of RX MPDU length

Message ID 20220506120216.58567-3-pkshih@realtek.com
State New
Headers show
Series rtw89: correct 8852c settings | expand

Commit Message

Ping-Ke Shih May 6, 2022, 12:02 p.m. UTC 
Set proper setting according to RX quota, and then it doesn't break buffer
due to size of received packet exceeding buffer size.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
 drivers/net/wireless/realtek/rtw89/mac.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/realtek/rtw89/mac.c b/drivers/net/wireless/realtek/rtw89/mac.c
index a06ca65b339ff..e1a1699a1a9cf 100644
--- a/drivers/net/wireless/realtek/rtw89/mac.c
+++ b/drivers/net/wireless/realtek/rtw89/mac.c
@@ -2005,6 +2005,7 @@  static int rmac_init(struct rtw89_dev *rtwdev, u8 mac_idx)
 #define TRXCFG_RMAC_DATA_TO	15
 #define RX_MAX_LEN_UNIT 512
 #define PLD_RLS_MAX_PG 127
+#define RX_SPEC_MAX_LEN (11454 + RX_MAX_LEN_UNIT)
 	int ret;
 	u32 reg, rx_max_len, rx_qta;
 	u16 val;
@@ -2035,11 +2036,10 @@  static int rmac_init(struct rtw89_dev *rtwdev, u8 mac_idx)
 		rx_qta = rtwdev->mac.dle_info.c0_rx_qta;
 	else
 		rx_qta = rtwdev->mac.dle_info.c1_rx_qta;
-	rx_qta = rx_qta > PLD_RLS_MAX_PG ? PLD_RLS_MAX_PG : rx_qta;
-	rx_max_len = (rx_qta - 1) * rtwdev->mac.dle_info.ple_pg_size /
-		     RX_MAX_LEN_UNIT;
-	rx_max_len = rx_max_len > B_AX_RX_MPDU_MAX_LEN_SIZE ?
-		     B_AX_RX_MPDU_MAX_LEN_SIZE : rx_max_len;
+	rx_qta = min_t(u32, rx_qta, PLD_RLS_MAX_PG);
+	rx_max_len = rx_qta * rtwdev->mac.dle_info.ple_pg_size;
+	rx_max_len = min_t(u32, rx_max_len, RX_SPEC_MAX_LEN);
+	rx_max_len /= RX_MAX_LEN_UNIT;
 	rtw89_write32_mask(rtwdev, reg, B_AX_RX_MPDU_MAX_LEN_MASK, rx_max_len);
 
 	if (rtwdev->chip->chip_id == RTL8852A &&