diff options
Diffstat (limited to 'target/linux/bcm63xx/patches-5.4/040-v5.12-bcm63xx_enet-batch-process-rx-path.patch')
| -rw-r--r-- | target/linux/bcm63xx/patches-5.4/040-v5.12-bcm63xx_enet-batch-process-rx-path.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/target/linux/bcm63xx/patches-5.4/040-v5.12-bcm63xx_enet-batch-process-rx-path.patch b/target/linux/bcm63xx/patches-5.4/040-v5.12-bcm63xx_enet-batch-process-rx-path.patch new file mode 100644 index 0000000000..ab1a4a91e1 --- /dev/null +++ b/target/linux/bcm63xx/patches-5.4/040-v5.12-bcm63xx_enet-batch-process-rx-path.patch @@ -0,0 +1,55 @@ +From 9cbfea02c1dbee0afb9128f065e6e793672b9ff7 Mon Sep 17 00:00:00 2001 +From: Sieng Piaw Liew <liew.s.piaw@gmail.com> +Date: Wed, 6 Jan 2021 22:42:02 +0800 +Subject: [PATCH 1/7] bcm63xx_enet: batch process rx path + +Use netif_receive_skb_list to batch process rx skb. +Tested on BCM6328 320 MHz using iperf3 -M 512, increasing performance +by 12.5%. + +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 136 MBytes 37.9 Mbits/sec 203 sender +[ 4] 0.00-30.00 sec 135 MBytes 37.7 Mbits/sec receiver + +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 | 6 +++++- + 1 file changed, 5 insertions(+), 1 deletion(-) + +--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c ++++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c +@@ -298,10 +298,12 @@ static void bcm_enet_refill_rx_timer(str + static int bcm_enet_receive_queue(struct net_device *dev, int budget) + { + struct bcm_enet_priv *priv; ++ struct list_head rx_list; + struct device *kdev; + int processed; + + priv = netdev_priv(dev); ++ INIT_LIST_HEAD(&rx_list); + kdev = &priv->pdev->dev; + processed = 0; + +@@ -392,10 +394,12 @@ static int bcm_enet_receive_queue(struct + skb->protocol = eth_type_trans(skb, dev); + dev->stats.rx_packets++; + dev->stats.rx_bytes += len; +- netif_receive_skb(skb); ++ list_add_tail(&skb->list, &rx_list); + + } while (--budget > 0); + ++ netif_receive_skb_list(&rx_list); ++ + if (processed || !priv->rx_desc_count) { + bcm_enet_refill_rx(dev); + |