linux-kernel - Re: [Intel-wired-lan] [PATCH iwl-next 1/1] igc: Allow hot-swapping XDP program

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Message-ID: <66dc22fa-4a57-c52e-33e4-e2047c4e7229@intel.com>
Date: Wed, 27 Nov 2024 10:34:00 +0200
From: Avigail Dahan <Avigailx.dahan@...el.com>
To: Song Yoong Siang <yoong.siang.song@...el.com>, Alexei Starovoitov
	<ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, "David S . Miller"
	<davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, "Jesper Dangaard
 Brouer" <hawk@...nel.org>, John Fastabend <john.fastabend@...il.com>, "Tony
 Nguyen" <anthony.l.nguyen@...el.com>, Przemek Kitszel
	<przemyslaw.kitszel@...el.com>, Andrew Lunn <andrew+netdev@...n.ch>, "Eric
 Dumazet" <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, "Vinicius
 Costa Gomes" <vinicius.gomes@...el.com>
CC: <intel-wired-lan@...ts.osuosl.org>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <bpf@...r.kernel.org>
Subject: Re: [Intel-wired-lan] [PATCH iwl-next 1/1] igc: Allow hot-swapping
 XDP program



On 18/11/2024 6:15, Song Yoong Siang wrote:
> Currently, the driver would always close and reopen the network interface
> when setting/removing the XDP program, regardless of the presence of XDP
> resources. This could cause unnecessary disruptions.
> 
> To avoid this, introduces a check to determine if there is a need to
> close and reopen the interface, allowing for seamless hot-swapping of
> XDP programs.
> 
> Signed-off-by: Song Yoong Siang <yoong.siang.song@...el.com>
> Acked-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
> ---
>   drivers/net/ethernet/intel/igc/igc_xdp.c | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)
> 
Tested-by: Avigail Dahan <avigailx.dahan@...el.com>