diff options
Diffstat (limited to 'target')
| -rw-r--r-- | target/linux/bcm63xx/patches-5.4/441-bcm63xx_enet-alloc_rx_skb_ip_align.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/target/linux/bcm63xx/patches-5.4/441-bcm63xx_enet-alloc_rx_skb_ip_align.patch b/target/linux/bcm63xx/patches-5.4/441-bcm63xx_enet-alloc_rx_skb_ip_align.patch new file mode 100644 index 0000000000..ade99beacc --- /dev/null +++ b/target/linux/bcm63xx/patches-5.4/441-bcm63xx_enet-alloc_rx_skb_ip_align.patch @@ -0,0 +1,37 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Sieng Piaw Liew <liew.s.piaw@gmail.com> +Date: Mon, 30 Nov 2020 11:07:47 +0800 +Subject: [PATCH] bcm63xx: enetsw: switch to netdev_alloc_skb_ip_align + +Increases packet processing performance by 30%. +Tested on BCM6328 320 MHz and iperf3 -M 512 for packet/sec performance. + +Before: +[ ID] Interval Transfer Bandwidth Retr +[ 4] 0.00-30.00 sec 120 MBytes 33.7 Mbits/sec 277 sender +[ 4] 0.00-30.00 sec 120 MBytes 33.5 Mbits/sec receiver + +After: +[ ID] Interval Transfer Bandwidth Retr +[ 4] 0.00-30.00 sec 155 MBytes 43.3 Mbits/sec 354 sender +[ 4] 0.00-30.00 sec 154 MBytes 43.1 Mbits/sec receiver + +Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com> +--- + drivers/net/ethernet/broadcom/bcm63xx_enet.c | 6 +++++- + 1 file changed, 4 insertions(+), 1 deletion(-) + +--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c ++++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c +@@ -239,7 +239,10 @@ static int bcm_enet_refill_rx(struct net + desc = &priv->rx_desc_cpu[desc_idx]; + + if (!priv->rx_skb[desc_idx]) { +- skb = netdev_alloc_skb(dev, priv->rx_skb_size); ++ if (priv->enet_is_sw) ++ skb = netdev_alloc_skb_ip_align(dev, priv->rx_skb_size); ++ else ++ skb = netdev_alloc_skb(dev, priv->rx_skb_size); + if (!skb) + break; + priv->rx_skb[desc_idx] = skb; |