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| author | Sieng Piaw Liew <liew.s.piaw@gmail.com> | 2020-11-30 11:32:18 +0800 |
|---|---|---|
| committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2020-12-02 20:25:32 +0100 |
| commit | eefbcf2915243bdedca37ba3df6bc505ffbc2e58 (patch) | |
| tree | defcdd91181561ec94ece9299ae5a592c44fdfbc | |
| parent | f330f991c1dcb483a1966d2d194afc2a40cd30fd (diff) | |
| download | upstream-eefbcf2915243bdedca37ba3df6bc505ffbc2e58.tar.gz upstream-eefbcf2915243bdedca37ba3df6bc505ffbc2e58.tar.bz2 upstream-eefbcf2915243bdedca37ba3df6bc505ffbc2e58.zip | |
bcm63xx: batch process RX path
Use netif_receive_skb_list to batch process skb in RX.
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>
[Amend commit description]
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
| -rw-r--r-- | target/linux/bcm63xx/patches-5.4/440-bcm63xx_enet-batch_process_RX_path.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/target/linux/bcm63xx/patches-5.4/440-bcm63xx_enet-batch_process_RX_path.patch b/target/linux/bcm63xx/patches-5.4/440-bcm63xx_enet-batch_process_RX_path.patch new file mode 100644 index 0000000000..0a22d8c651 --- /dev/null +++ b/target/linux/bcm63xx/patches-5.4/440-bcm63xx_enet-batch_process_RX_path.patch @@ -0,0 +1,53 @@ +From 1606f78dc82e4f311ca5844a0605a62cd141a072 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: batch process RX path + +Use netif_receive_skb_list to batch process skb in RX. +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> +--- + 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 +@@ -301,10 +301,12 @@ static int bcm_enet_receive_queue(struct + struct bcm_enet_priv *priv; + struct device *kdev; + int processed; ++ struct list_head rx_list; + + priv = netdev_priv(dev); + kdev = &priv->pdev->dev; + processed = 0; ++ INIT_LIST_HEAD(&rx_list); + + /* don't scan ring further than number of refilled + * descriptor */ +@@ -393,10 +395,12 @@ 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); + |