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41 lines
1.4 KiB
Diff
41 lines
1.4 KiB
Diff
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From ae2259eebeacb7753e3043278957b45840123972 Mon Sep 17 00:00:00 2001
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From: Sieng Piaw Liew <liew.s.piaw@gmail.com>
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Date: Wed, 6 Jan 2021 22:42:08 +0800
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Subject: [PATCH 7/7] bcm63xx_enet: improve rx loop
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Use existing rx processed count to track against budget, thereby making
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budget decrement operation redundant.
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rx_desc_count can be calculated outside the rx loop, making the loop a
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bit smaller.
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Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
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Acked-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/ethernet/broadcom/bcm63xx_enet.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
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+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
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@@ -340,7 +340,6 @@ static int bcm_enet_receive_queue(struct
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priv->rx_curr_desc++;
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if (priv->rx_curr_desc == priv->rx_ring_size)
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priv->rx_curr_desc = 0;
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- priv->rx_desc_count--;
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/* if the packet does not have start of packet _and_
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* end of packet flag set, then just recycle it */
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@@ -405,9 +404,10 @@ static int bcm_enet_receive_queue(struct
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dev->stats.rx_bytes += len;
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list_add_tail(&skb->list, &rx_list);
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- } while (--budget > 0);
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+ } while (processed < budget);
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netif_receive_skb_list(&rx_list);
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+ priv->rx_desc_count -= processed;
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if (processed || !priv->rx_desc_count) {
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bcm_enet_refill_rx(dev, true);
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