netdev - Re: [PATCH net] ethtool: Fix set RXNFC command with symmetric RSS hash

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Message-ID: <d0bad3a5-1f5b-9b48-59f6-879ea803efd7@gmail.com>
Date: Mon, 27 Jan 2025 14:14:42 +0000
From: Edward Cree <ecree.xilinx@...il.com>
To: Gal Pressman <gal@...dia.com>, "David S. Miller" <davem@...emloft.net>,
 Jakub Kicinski <kuba@...nel.org>
Cc: Simon Horman <horms@...nel.org>, netdev@...r.kernel.org,
 Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>,
 Ahmed Zaki <ahmed.zaki@...el.com>, Tariq Toukan <tariqt@...dia.com>
Subject: Re: [PATCH net] ethtool: Fix set RXNFC command with symmetric RSS
 hash

On 26/01/2025 19:18, Gal Pressman wrote:
> The sanity check that both source and destination are set when symmetric
> RSS hash is requested is only relevant for ETHTOOL_SRXFH (rx-flow-hash),
> it should not be performed on any other commands (e.g.
> ETHTOOL_SRXCLSRLINS/ETHTOOL_SRXCLSRLDEL).
> 
> This resolves accessing uninitialized 'info.data' field, and fixes false
> errors in rule insertion:
>   # ethtool --config-ntuple eth2 flow-type ip4 dst-ip 255.255.255.255 action -1 loc 0
>   rmgr: Cannot insert RX class rule: Invalid argument
>   Cannot insert classification rule
> 
> Fixes: 13e59344fb9d ("net: ethtool: add support for symmetric-xor RSS hash")
> Cc: Ahmed Zaki <ahmed.zaki@...el.com>
> Reviewed-by: Tariq Toukan <tariqt@...dia.com>
> Signed-off-by: Gal Pressman <gal@...dia.com>

Reviewed-by: Edward Cree <ecree.xilinx@...il.com>