Re: [PATCH net-next v3 4/7] bcm63xx_enet: alloc rx skb with NET_IP_ALIGN
From: Florian Fainelli <f.fainelli@gmail.com>
Date: 2021-01-06 17:07:21
Also in:
linux-arm-kernel, lkml
On 1/6/21 6:42 AM, Sieng Piaw Liew wrote:
Use netdev_alloc_skb_ip_align on newer SoCs with integrated switch (enetsw) when refilling RX. Increases packet processing performance by 30% (with netif_receive_skb_list). Non-enetsw SoCs cannot function with the extra pad so continue to use the regular netdev_alloc_skb. Tested on BCM6328 320 MHz and iperf3 -M 512 to measure 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 (+netif_receive_skb_list): [ 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 <redacted>
Acked-by: Florian Fainelli <f.fainelli@gmail.com> -- Florian