From: Sieng Piaw Liew Date: Wed, 6 Jan 2021 14:42:02 +0000 (+0800) Subject: bcm63xx_enet: batch process rx path X-Git-Tag: io_uring-worker.v3-2021-02-25~99^2~400^2~6 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=9cbfea02c1dbee0afb9128f065e6e793672b9ff7;p=linux-2.6-block.git 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 Acked-by: Florian Fainelli Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c index 916824cca3fd..b82b7805c36a 100644 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c @@ -297,10 +297,12 @@ static void bcm_enet_refill_rx_timer(struct timer_list *t) 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; @@ -391,10 +393,12 @@ static int bcm_enet_receive_queue(struct net_device *dev, int budget) 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);