netdev - [PATCH net 2/4] bnxt_en: Fix skb recycling logic in bnxt_deliver

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Date: Tue,  5 Dec 2023 15:44:02 -0800
From: Michael Chan <michael.chan@...adcom.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	gospo@...adcom.com,
	Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
	Somnath Kotur <somnath.kotur@...adcom.com>,
	Andy Gospodarek <andrew.gospodarek@...adcom.com>,
	Vikas Gupta <vikas.gupta@...adcom.com>
Subject: [PATCH net 2/4] bnxt_en: Fix skb recycling logic in bnxt_deliver_skb()

From: Sreekanth Reddy <sreekanth.reddy@...adcom.com>

Receive SKBs can go through the VF-rep path or the normal path.
skb_mark_for_recycle() is only called for the normal path.  Fix it
to do it for both paths to fix possible stalled page pool shutdown
errors.

Fixes: 86b05508f775 ("bnxt_en: Use the unified RX page pool buffers for XDP and non-XDP")
Reviewed-by: Somnath Kotur <somnath.kotur@...adcom.com>
Reviewed-by: Andy Gospodarek <andrew.gospodarek@...adcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@...adcom.com>
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 72f2fc983940..b4a5311bdeb5 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1748,13 +1748,14 @@ static void bnxt_tpa_agg(struct bnxt *bp, struct bnxt_rx_ring_info *rxr,
 static void bnxt_deliver_skb(struct bnxt *bp, struct bnxt_napi *bnapi,
 			     struct sk_buff *skb)
 {
+	skb_mark_for_recycle(skb);
+
 	if (skb->dev != bp->dev) {
 		/* this packet belongs to a vf-rep */
 		bnxt_vf_rep_rx(bp, skb);
 		return;
 	}
 	skb_record_rx_queue(skb, bnapi->index);
-	skb_mark_for_recycle(skb);
 	napi_gro_receive(&bnapi->napi, skb);
 }
 
-- 
2.30.1


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