wifi: brcmsmac: cleanup SCB-related data types

Drop unused and set-but-unused fields of 'struct scb_ampdu_tid_ini',
'struct scb_ampdu' and 'struct scb', as well as now unused argument
of 'brcms_c_ampdu_tx_operational()', adjust related code.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230725162400.192357-2-dmantipov@yandex.ru

drivers/net/wireless/broadcom/brcm80211/brcmsmac/ampdu.c

@@ -476,11 +476,9 @@ static int brcms_c_ffpld_check_txfunfl(struct brcms_c_info *wlc, int fid)
 
 void
 brcms_c_ampdu_tx_operational(struct brcms_c_info *wlc, u8 tid,
-	u8 ba_wsize,		/* negotiated ba window size (in pdu) */
 	uint max_rx_ampdu_bytes) /* from ht_cap in beacon */
 {
 	struct scb_ampdu *scb_ampdu;
-	struct scb_ampdu_tid_ini *ini;
 	struct ampdu_info *ampdu = wlc->ampdu;
 	struct scb *scb = &wlc->pri_scb;
 	scb_ampdu = &scb->scb_ampdu;
@@ -491,10 +489,6 @@ brcms_c_ampdu_tx_operational(struct brcms_c_info *wlc, u8 tid,
 		return;
 	}
 
-	ini = &scb_ampdu->ini[tid];
-	ini->tid = tid;
-	ini->scb = scb_ampdu->scb;
-	ini->ba_wsize = ba_wsize;
 	scb_ampdu->max_rx_ampdu_bytes = max_rx_ampdu_bytes;
 }
 

drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c

@@ -810,7 +810,6 @@ brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	brcms_c_init_scb(scb);
 
 	wl->pub->global_ampdu = &(scb->scb_ampdu);
-	wl->pub->global_ampdu->scb = scb;
 	wl->pub->global_ampdu->max_pdu = 16;
 
 	/*
@@ -831,7 +830,6 @@ brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 	struct ieee80211_sta *sta = params->sta;
 	enum ieee80211_ampdu_mlme_action action = params->action;
 	u16 tid = params->tid;
-	u8 buf_size = params->buf_size;
 
 	if (WARN_ON(scb->magic != SCB_MAGIC))
 		return -EIDRM;
@@ -863,11 +861,11 @@ brcms_ops_ampdu_action(struct ieee80211_hw *hw,
 		/*
 		 * BA window size from ADDBA response ('buf_size') defines how
 		 * many outstanding MPDUs are allowed for the BA stream by
-		 * recipient and traffic class. 'ampdu_factor' gives maximum
-		 * AMPDU size.
+		 * recipient and traffic class (this is actually unused by the
+		 * rest of the driver). 'ampdu_factor' gives maximum AMPDU size.
 		 */
 		spin_lock_bh(&wl->lock);
-		brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
+		brcms_c_ampdu_tx_operational(wl->wlc, tid,
 			(1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 			 sta->deflink.ht_cap.ampdu_factor)) - 1);
 		spin_unlock_bh(&wl->lock);

drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c

@@ -3147,10 +3147,8 @@ void brcms_c_init_scb(struct scb *scb)
 	scb->flags = SCB_WMECAP | SCB_HTCAP;
 	for (i = 0; i < NUMPRIO; i++) {
 		scb->seqnum[i] = 0;
-		scb->seqctl[i] = 0xFFFF;
 	}
 
-	scb->seqctl_nonqos = 0xFFFF;
 	scb->magic = SCB_MAGIC;
 }
 

drivers/net/wireless/broadcom/brcm80211/brcmsmac/pub.h

@@ -297,7 +297,7 @@ struct brcms_pub *brcms_c_pub(struct brcms_c_info *wlc);
 void brcms_c_ampdu_flush(struct brcms_c_info *wlc, struct ieee80211_sta *sta,
 			 u16 tid);
 void brcms_c_ampdu_tx_operational(struct brcms_c_info *wlc, u8 tid,
-				  u8 ba_wsize, uint max_rx_ampdu_bytes);
+				  uint max_rx_ampdu_bytes);
 int brcms_c_module_register(struct brcms_pub *pub, const char *name,
 			    struct brcms_info *hdl,
 			    int (*down_fn)(void *handle));

drivers/net/wireless/broadcom/brcm80211/brcmsmac/scb.h

@@ -36,19 +36,13 @@
 
 /* structure to store per-tid state for the ampdu initiator */
 struct scb_ampdu_tid_ini {
-	u8 tid;		  /* initiator tid for easy lookup */
 	/* tx retry count; indexed by seq modulo */
 	u8 txretry[AMPDU_TX_BA_MAX_WSIZE];
-	struct scb *scb;  /* backptr for easy lookup */
-	u8 ba_wsize;	  /* negotiated ba window size (in pdu) */
 };
 
 struct scb_ampdu {
-	struct scb *scb;	/* back pointer for easy reference */
-	u8 mpdu_density;	/* mpdu density */
 	u8 max_pdu;		/* max pdus allowed in ampdu */
 	u8 release;		/* # of mpdus released at a time */
-	u16 min_len;		/* min mpdu len to support the density */
 	u32 max_rx_ampdu_bytes;	/* max ampdu rcv length; 8k, 16k, 32k, 64k */
 
 	/*
@@ -64,15 +58,7 @@ struct scb_ampdu {
 struct scb {
 	u32 magic;
 	u32 flags;	/* various bit flags as defined below */
-	u32 flags2;	/* various bit flags2 as defined below */
-	u8 state;	/* current state bitfield of auth/assoc process */
-	u8 ea[ETH_ALEN];	/* station address */
-	uint fragresid[NUMPRIO];/* #bytes unused in frag buffer per prio */
-
 	u16 seqctl[NUMPRIO];	/* seqctl of last received frame (for dups) */
-	/* seqctl of last received frame (for dups) for non-QoS data and
-	 * management */
-	u16 seqctl_nonqos;
 	u16 seqnum[NUMPRIO];/* WME: driver maintained sw seqnum per priority */
 
 	struct scb_ampdu scb_ampdu;	/* AMPDU state including per tid info */