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bcm63xx_enet: improve rx loop

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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>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Sieng Piaw Liew 2021-01-06 22:42:08 +08:00 committed by Jakub Kicinski
parent d27de0ef5e
commit ae2259eebe
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/broadcom/bcm63xx_enet.c
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@ -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);