linux-kernel - [PATCH net-next] net: atl1c: switch to napi_consume

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Date:   Thu, 21 Sep 2023 08:56:23 +0800
From:   Sieng-Piaw Liew <liew.s.piaw@...il.com>
To:     chris.snook@...il.com, davem@...emloft.net, kuba@...nel.org,
        pabeni@...hat.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Sieng-Piaw Liew <liew.s.piaw@...il.com>
Subject: [PATCH net-next] net: atl1c: switch to napi_consume_skb()

Switch to napi_consume_skb() to take advantage of bulk free, and skb
reuse through skb cache in conjunction with napi_build_skb().

When parameter 'budget' = 0, indicating non-NAPI context,
dev_consume_skb_any() is called internally.

Signed-off-by: Sieng-Piaw Liew <liew.s.piaw@...il.com>
---
 drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index 74b78164cf74..46cdc32b4e31 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -842,7 +842,8 @@ static int atl1c_sw_init(struct atl1c_adapter *adapter)
 }
 
 static inline void atl1c_clean_buffer(struct pci_dev *pdev,
-				struct atl1c_buffer *buffer_info)
+				      struct atl1c_buffer *buffer_info,
+				      int budget)
 {
 	u16 pci_driection;
 	if (buffer_info->flags & ATL1C_BUFFER_FREE)
@@ -861,7 +862,7 @@ static inline void atl1c_clean_buffer(struct pci_dev *pdev,
 				       buffer_info->length, pci_driection);
 	}
 	if (buffer_info->skb)
-		dev_consume_skb_any(buffer_info->skb);
+		napi_consume_skb(buffer_info->skb, budget);
 	buffer_info->dma = 0;
 	buffer_info->skb = NULL;
 	ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE);
@@ -882,7 +883,7 @@ static void atl1c_clean_tx_ring(struct atl1c_adapter *adapter,
 	ring_count = tpd_ring->count;
 	for (index = 0; index < ring_count; index++) {
 		buffer_info = &tpd_ring->buffer_info[index];
-		atl1c_clean_buffer(pdev, buffer_info);
+		atl1c_clean_buffer(pdev, buffer_info, 0);
 	}
 
 	netdev_tx_reset_queue(netdev_get_tx_queue(adapter->netdev, queue));
@@ -909,7 +910,7 @@ static void atl1c_clean_rx_ring(struct atl1c_adapter *adapter, u32 queue)
 
 	for (j = 0; j < rfd_ring->count; j++) {
 		buffer_info = &rfd_ring->buffer_info[j];
-		atl1c_clean_buffer(pdev, buffer_info);
+		atl1c_clean_buffer(pdev, buffer_info, 0);
 	}
 	/* zero out the descriptor ring */
 	memset(rfd_ring->desc, 0, rfd_ring->size);
@@ -1607,7 +1608,7 @@ static int atl1c_clean_tx(struct napi_struct *napi, int budget)
 			total_bytes += buffer_info->skb->len;
 			total_packets++;
 		}
-		atl1c_clean_buffer(pdev, buffer_info);
+		atl1c_clean_buffer(pdev, buffer_info, budget);
 		if (++next_to_clean == tpd_ring->count)
 			next_to_clean = 0;
 		atomic_set(&tpd_ring->next_to_clean, next_to_clean);
@@ -2151,7 +2152,7 @@ static void atl1c_tx_rollback(struct atl1c_adapter *adpt,
 	while (index != tpd_ring->next_to_use) {
 		tpd = ATL1C_TPD_DESC(tpd_ring, index);
 		buffer_info = &tpd_ring->buffer_info[index];
-		atl1c_clean_buffer(adpt->pdev, buffer_info);
+		atl1c_clean_buffer(adpt->pdev, buffer_info, 0);
 		memset(tpd, 0, sizeof(struct atl1c_tpd_desc));
 		if (++index == tpd_ring->count)
 			index = 0;
-- 
2.34.1