From: Sieng Piaw Liew <liew.s.piaw@gmail.com>
To: Florian Fainelli <f.fainelli@gmail.com>
Cc: bcm-kernel-feedback-list@broadcom.com,
Sieng Piaw Liew <liew.s.piaw@gmail.com>,
netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH net-next v3 7/7] bcm63xx_enet: improve rx loop
Date: Wed, 6 Jan 2021 22:42:08 +0800 [thread overview]
Message-ID: <20210106144208.1935-8-liew.s.piaw@gmail.com> (raw)
In-Reply-To: <20210106144208.1935-1-liew.s.piaw@gmail.com>
Use existing rx processed count to track against budget, thereby making
budget decrement operation redundant.
rx_desc_count can be calculated outside the rx loop, making the loop a
bit smaller.
Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
---
drivers/net/ethernet/broadcom/bcm63xx_enet.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
index c11491429ed2..fd8767213165 100644
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -339,7 +339,6 @@ static int bcm_enet_receive_queue(struct net_device *dev, int budget)
priv->rx_curr_desc++;
if (priv->rx_curr_desc == priv->rx_ring_size)
priv->rx_curr_desc = 0;
- priv->rx_desc_count--;
/* if the packet does not have start of packet _and_
* end of packet flag set, then just recycle it */
@@ -404,9 +403,10 @@ static int bcm_enet_receive_queue(struct net_device *dev, int budget)
dev->stats.rx_bytes += len;
list_add_tail(&skb->list, &rx_list);
- } while (--budget > 0);
+ } while (processed < budget);
netif_receive_skb_list(&rx_list);
+ priv->rx_desc_count -= processed;
if (processed || !priv->rx_desc_count) {
bcm_enet_refill_rx(dev, true);
--
2.17.1
next prev parent reply other threads:[~2021-01-06 14:45 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-06 14:42 [PATCH net-next v3 0/7] bcm63xx_enet: major makeover of driver Sieng Piaw Liew
2021-01-06 14:42 ` [PATCH net-next v3 1/7] bcm63xx_enet: batch process rx path Sieng Piaw Liew
2021-01-06 17:04 ` Florian Fainelli
2021-01-06 14:42 ` [PATCH net-next v3 2/7] bcm63xx_enet: add BQL support Sieng Piaw Liew
2021-01-06 17:05 ` Florian Fainelli
2021-01-06 14:42 ` [PATCH net-next v3 3/7] bcm63xx_enet: add xmit_more support Sieng Piaw Liew
2021-01-06 17:05 ` Florian Fainelli
2021-01-06 14:42 ` [PATCH net-next v3 4/7] bcm63xx_enet: alloc rx skb with NET_IP_ALIGN Sieng Piaw Liew
2021-01-06 17:06 ` Florian Fainelli
2021-01-06 14:42 ` [PATCH net-next v3 5/7] bcm63xx_enet: consolidate rx SKB ring cleanup code Sieng Piaw Liew
2021-01-06 17:07 ` Florian Fainelli
2021-01-06 14:42 ` [PATCH net-next v3 6/7] bcm63xx_enet: convert to build_skb Sieng Piaw Liew
2021-01-06 17:08 ` Florian Fainelli
2021-01-06 14:42 ` Sieng Piaw Liew [this message]
2021-01-06 17:08 ` [PATCH net-next v3 7/7] bcm63xx_enet: improve rx loop Florian Fainelli
2021-01-06 17:03 ` [PATCH net-next v3 0/7] bcm63xx_enet: major makeover of driver Florian Fainelli
2021-01-07 20:41 ` Jakub Kicinski
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