linux-kernel - Re: [PATCH net-next v9 3/3] net: ethernet: ti: am65-cpsw: Add minimal XDP support

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Date: Fri, 12 Apr 2024 16:45:24 -0700
From: Jacob Keller <jacob.e.keller@...el.com>
To: Julien Panis <jpanis@...libre.com>, "David S. Miller"
	<davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Russell King
	<linux@...linux.org.uk>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann
	<daniel@...earbox.net>, Jesper Dangaard Brouer <hawk@...nel.org>, "John
 Fastabend" <john.fastabend@...il.com>, Sumit Semwal
	<sumit.semwal@...aro.org>, Christian König
	<christian.koenig@....com>, Simon Horman <horms@...nel.org>, Andrew Lunn
	<andrew@...n.ch>, Ratheesh Kannoth <rkannoth@...vell.com>, "Naveen
 Mamindlapalli" <naveenm@...vell.com>
CC: <danishanwar@...com>, <yuehaibing@...wei.com>, <rogerq@...nel.org>,
	<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<bpf@...r.kernel.org>, <linux-media@...r.kernel.org>,
	<dri-devel@...ts.freedesktop.org>, <linaro-mm-sig@...ts.linaro.org>
Subject: Re: [PATCH net-next v9 3/3] net: ethernet: ti: am65-cpsw: Add minimal
 XDP support



On 4/12/2024 8:38 AM, Julien Panis wrote:
> This patch adds XDP (eXpress Data Path) support to TI AM65 CPSW
> Ethernet driver. The following features are implemented:
> - NETDEV_XDP_ACT_BASIC (XDP_PASS, XDP_TX, XDP_DROP, XDP_ABORTED)
> - NETDEV_XDP_ACT_REDIRECT (XDP_REDIRECT)
> - NETDEV_XDP_ACT_NDO_XMIT (ndo_xdp_xmit callback)
> 
> The page pool memory model is used to get better performance.
> Below are benchmark results obtained for the receiver with iperf3 default
> parameters:
> - Without page pool: 495 Mbits/sec
> - With page pool: 605 Mbits/sec (actually 610 Mbits/sec, with a 5 Mbits/sec
> loss due to extra processing in the hot path to handle XDP).
> 
> Signed-off-by: Julien Panis <jpanis@...libre.com>

Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>