[PATCHv2 wireless-next] wifi: nxpwifi: embed rx_reorder_ptr

[Rosen Penev <rosenp@gmail.com>]

rx_reorder_ptr is a dynamically allocated array which is done near the
main struct allocation. Combine the two to avoid freeing separately.

Also fix the type to what it actually is. void is normally used to avoid
casting but there's no need here.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 v2: fix unused variable error
 .../net/wireless/nxp/nxpwifi/11n_rxreorder.c  | 23 +++++--------------
 drivers/net/wireless/nxp/nxpwifi/main.h       |  2 +-
 2 files changed, 7 insertions(+), 18 deletions(-)

diff --git a/drivers/net/wireless/nxp/nxpwifi/11n_rxreorder.c b/drivers/net/wireless/nxp/nxpwifi/11n_rxreorder.c
index c5819f89b08c..65b628411543 100644
--- a/drivers/net/wireless/nxp/nxpwifi/11n_rxreorder.c
+++ b/drivers/net/wireless/nxp/nxpwifi/11n_rxreorder.c
@@ -171,7 +171,6 @@ nxpwifi_del_rx_reorder_entry(struct nxpwifi_private *priv,
 	list_del_rcu(&tbl->list);
 	spin_unlock_bh(&priv->rx_reorder_tbl_lock[tid]);
 
-	kfree(tbl->rx_reorder_ptr);
 	kfree_rcu(tbl, rcu);
 
 	atomic_set(&priv->adapter->rx_ba_teardown_pending, 0);
@@ -262,7 +261,6 @@ static void
 nxpwifi_11n_create_rx_reorder_tbl(struct nxpwifi_private *priv, u8 *ta,
 				  int tid, int win_size, int seq_num)
 {
-	int i;
 	struct nxpwifi_rx_reorder_tbl *tbl, *new_node;
 	u16 last_seq = 0;
 	struct nxpwifi_sta_node *node;
@@ -273,11 +271,16 @@ nxpwifi_11n_create_rx_reorder_tbl(struct nxpwifi_private *priv, u8 *ta,
 		nxpwifi_11n_dispatch_pkt_until_start_win(priv, tbl, seq_num);
 		return;
 	}
+
+	if (win_size <= 0)
+		return;
+
 	/* if !tbl then create one */
-	new_node = kzalloc_obj(*new_node, GFP_KERNEL);
+	new_node = kzalloc_flex(*new_node, rx_reorder_ptr, win_size);
 	if (!new_node)
 		return;
 
+	new_node->win_size = win_size;
 	INIT_LIST_HEAD(&new_node->list);
 	new_node->tid = tid;
 	memcpy(new_node->ta, ta, ETH_ALEN);
@@ -311,26 +314,12 @@ nxpwifi_11n_create_rx_reorder_tbl(struct nxpwifi_private *priv, u8 *ta,
 		new_node->flags |= RXREOR_INIT_WINDOW_SHIFT;
 	}
 
-	new_node->win_size = win_size;
-
-	new_node->rx_reorder_ptr = kcalloc(win_size, sizeof(void *),
-					   GFP_KERNEL);
-	if (!new_node->rx_reorder_ptr) {
-		kfree(new_node);
-		nxpwifi_dbg(priv->adapter, ERROR,
-			    "%s: failed to alloc reorder_ptr\n", __func__);
-		return;
-	}
-
 	new_node->timer_context.ptr = new_node;
 	new_node->timer_context.priv = priv;
 	new_node->timer_context.timer_is_set = false;
 
 	timer_setup(&new_node->timer_context.timer, nxpwifi_flush_data, 0);
 
-	for (i = 0; i < win_size; ++i)
-		new_node->rx_reorder_ptr[i] = NULL;
-
 	spin_lock_bh(&priv->rx_reorder_tbl_lock[tid]);
 	list_add_tail_rcu(&new_node->list, &priv->rx_reorder_tbl_ptr[tid]);
 	spin_unlock_bh(&priv->rx_reorder_tbl_lock[tid]);
diff --git a/drivers/net/wireless/nxp/nxpwifi/main.h b/drivers/net/wireless/nxp/nxpwifi/main.h
index 4abf80771be2..349dfa4d3f85 100644
--- a/drivers/net/wireless/nxp/nxpwifi/main.h
+++ b/drivers/net/wireless/nxp/nxpwifi/main.h
@@ -656,10 +656,10 @@ struct nxpwifi_rx_reorder_tbl {
 	int init_win;
 	int start_win;
 	int win_size;
-	void **rx_reorder_ptr;
 	struct reorder_tmr_cnxt timer_context;
 	u8 amsdu;
 	u8 flags;
+	struct sk_buff *rx_reorder_ptr[] __counted_by(win_size);
 };
 
 struct nxpwifi_bss_prio_node {
-- 
2.55.0