wcn36xx: let device generate qos seq numbers

wcn36xx currently sends an incorrect sequence number into the BA session
setup firmware command: it should be saving or updating the ssn in the
TX_START ampdu_action callback instead of waiting until TX_OPERATIONAL.
However, we can sidestep the issue by letting the hardware generate the
sequence numbers for QoS frames, as is done in prima, so do that.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ath/wcn36xx/txrx.c

@@ -93,6 +93,7 @@ static void wcn36xx_set_tx_pdu(struct wcn36xx_tx_bd *bd,
 		bd->pdu.mpdu_header_off;
 	bd->pdu.mpdu_len = len;
 	bd->pdu.tid = tid;
+	bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_DPU_QOS;
 }
 
 static inline struct wcn36xx_vif *get_vif_by_addr(struct wcn36xx *wcn,

drivers/net/wireless/ath/wcn36xx/txrx.h

@@ -32,6 +32,12 @@
 #define WCN36XX_BD_RATE_MGMT 2
 #define WCN36XX_BD_RATE_CTRL 3
 
+enum wcn36xx_txbd_ssn_type {
+	WCN36XX_TXBD_SSN_FILL_HOST = 0,
+	WCN36XX_TXBD_SSN_FILL_DPU_NON_QOS = 1,
+	WCN36XX_TXBD_SSN_FILL_DPU_QOS = 2,
+};
+
 struct wcn36xx_pdu {
 	u32	dpu_fb:8;
 	u32	adu_fb:8;
@@ -50,7 +56,8 @@ struct wcn36xx_pdu {
 	/* 0x0c*/
 	u32	reserved4:8;
 	u32	tid:4;
-	u32	reserved3:4;
+	u32	bd_ssn:2;
+	u32	reserved3:2;
 	u32	mpdu_len:16;
 };