netdev - Re: [PATCH iwl-net 2/2] i40e: take into account XDP Tx queues when stopping rings

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Message-ID: <20240205111347.GI960600@kernel.org>
Date: Mon, 5 Feb 2024 11:13:47 +0000
From: Simon Horman <horms@...nel.org>
To: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
	anthony.l.nguyen@...el.com, magnus.karlsson@...el.com,
	Seth Forshee <sforshee@...nel.org>
Subject: Re: [PATCH iwl-net 2/2] i40e: take into account XDP Tx queues when
 stopping rings

On Thu, Feb 01, 2024 at 04:42:19PM +0100, Maciej Fijalkowski wrote:
> Seth reported that on his side XDP traffic can not survive a round of
> down/up against i40e interface. Dmesg output was telling us that we were
> not able to disable the very first XDP ring. That was due to the fact
> that in i40e_vsi_stop_rings() in a pre-work that is done before calling
> i40e_vsi_wait_queues_disabled(), XDP Tx queues were not taken into the
> account.
> 
> To fix this, let us distinguish between Rx and Tx queue boundaries and
> take into the account XDP queues for Tx side.
> 
> Reported-by: Seth Forshee <sforshee@...nel.org>
> Closes: https://lore.kernel.org/netdev/ZbkE7Ep1N1Ou17sA@do-x1extreme/
> Fixes: 65662a8dcdd0 ("i40e: Fix logic of disabling queues")
> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com>

Reviewed-by: Simon Horman <horms@...nel.org>