diff options
Diffstat (limited to 'target/linux/bcm63xx/patches-5.4/046-v5.12-bcm63xx_enet-improve-rx-loop.patch')
| -rw-r--r-- | target/linux/bcm63xx/patches-5.4/046-v5.12-bcm63xx_enet-improve-rx-loop.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/target/linux/bcm63xx/patches-5.4/046-v5.12-bcm63xx_enet-improve-rx-loop.patch b/target/linux/bcm63xx/patches-5.4/046-v5.12-bcm63xx_enet-improve-rx-loop.patch new file mode 100644 index 0000000000..65d3e2571a --- /dev/null +++ b/target/linux/bcm63xx/patches-5.4/046-v5.12-bcm63xx_enet-improve-rx-loop.patch @@ -0,0 +1,40 @@ +From ae2259eebeacb7753e3043278957b45840123972 Mon Sep 17 00:00:00 2001 +From: Sieng Piaw Liew <liew.s.piaw@gmail.com> +Date: Wed, 6 Jan 2021 22:42:08 +0800 +Subject: [PATCH 7/7] bcm63xx_enet: improve rx loop + +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> +--- + drivers/net/ethernet/broadcom/bcm63xx_enet.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c ++++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c +@@ -340,7 +340,6 @@ static int bcm_enet_receive_queue(struct + 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 */ +@@ -405,9 +404,10 @@ static int bcm_enet_receive_queue(struct + 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); |