linux-kernel - Re: [PATCH v4 0/3] Add minimal XDP support to TI AM65 CPSW Ethernet driver

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Message-ID: <20240313134441.GA1263398@maili.marvell.com>
Date: Wed, 13 Mar 2024 19:14:41 +0530
From: Ratheesh Kannoth <rkannoth@...vell.com>
To: Julien Panis <jpanis@...libre.com>
CC: "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>,
        <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 v4 0/3] Add minimal XDP support to TI AM65 CPSW Ethernet
 driver

On 2024-03-12 at 18:52:39, Julien Panis (jpanis@...libre.com) wrote:
> This patch adds XDP support to TI AM65 CPSW Ethernet driver.

is this a net-next item ?

>
> The following features are implemented: NETDEV_XDP_ACT_BASIC,
> NETDEV_XDP_ACT_REDIRECT, and NETDEV_XDP_ACT_NDO_XMIT.
>
> Zero-copy and non-linear XDP buffer supports are NOT implemented.
>
> Besides, the page pool memory model is used to get better performance.
>
> Signed-off-by: Julien Panis <jpanis@...libre.com>
> ---
> Changes in v4:
> - Add skb_mark_for_recycle() in am65_cpsw_nuss_rx_packets() function.
> - Specify napi page pool parameter in am65_cpsw_create_xdp_rxqs() function.
> - Add benchmark numbers (with VS without page pool) in the commit description.
> - Add xdp_do_flush() in am65_cpsw_run_xdp() function for XDP_REDIRECT case.
> - Link to v3: https://lore.kernel.org/r/20240223-am65-cpsw-xdp-basic-v3-0-5d944a9d84a0@baylibre.com
>
> Changes in v3:
> - Fix a potential issue with TX buffer type, which is now set for each buffer.
> - Link to v2: https://lore.kernel.org/r/20240223-am65-cpsw-xdp-basic-v2-0-01c6caacabb6@baylibre.com
>
> Changes in v2:
> - Use page pool memory model instead of MEM_TYPE_PAGE_ORDER0.
> - In am65_cpsw_alloc_skb(), release reference on the page pool page
> in case of error returned by build_skb().
> - [nit] Cleanup am65_cpsw_nuss_common_open/stop() functions.
> - [nit] Arrange local variables in reverse xmas tree order.
> - Link to v1: https://lore.kernel.org/r/20240223-am65-cpsw-xdp-basic-v1-1-9f0b6cbda310@baylibre.com
>
> ---
> Julien Panis (3):
>       net: ethernet: ti: Add accessors for struct k3_cppi_desc_pool members
>       net: ethernet: ti: Add desc_infos member to struct k3_cppi_desc_pool
>       net: ethernet: ti: am65-cpsw: Add minimal XDP support
>
>  drivers/net/ethernet/ti/am65-cpsw-nuss.c    | 536 +++++++++++++++++++++++++---
>  drivers/net/ethernet/ti/am65-cpsw-nuss.h    |  13 +
>  drivers/net/ethernet/ti/k3-cppi-desc-pool.c |  36 ++
>  drivers/net/ethernet/ti/k3-cppi-desc-pool.h |   4 +
>  4 files changed, 539 insertions(+), 50 deletions(-)
> ---
> base-commit: 6613476e225e090cc9aad49be7fa504e290dd33d
> change-id: 20240223-am65-cpsw-xdp-basic-4db828508b48
>
> Best regards,
> --
> Julien Panis <jpanis@...libre.com>
>