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Message-ID: <20241025140153.GB1507976@kernel.org>
Date: Fri, 25 Oct 2024 15:01:53 +0100
From: Simon Horman <horms@...nel.org>
To: Wenjia Zhang <wenjia@...ux.ibm.com>
Cc: Wen Gu <guwen@...ux.alibaba.com>,
	"D. Wythe" <alibuda@...ux.alibaba.com>,
	Tony Lu <tonylu@...ux.alibaba.com>,
	David Miller <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>,
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
	linux-s390@...r.kernel.org, Heiko Carstens <hca@...ux.ibm.com>,
	Jan Karcher <jaka@...ux.ibm.com>, Gerd Bayer <gbayer@...ux.ibm.com>,
	Alexandra Winter <wintera@...ux.ibm.com>,
	Halil Pasic <pasic@...ux.ibm.com>,
	Nils Hoppmann <niho@...ux.ibm.com>,
	Niklas Schnell <schnelle@...ux.ibm.com>,
	Thorsten Winkler <twinkler@...ux.ibm.com>,
	Karsten Graul <kgraul@...ux.ibm.com>,
	Stefan Raspl <raspl@...ux.ibm.com>, Aswin K <aswin@...ux.ibm.com>
Subject: Re: [PATCH net] net/smc: Fix lookup of netdev by using
 ib_device_get_netdev()

On Fri, Oct 25, 2024 at 09:23:55AM +0200, Wenjia Zhang wrote:
> Commit c2261dd76b54 ("RDMA/device: Add ib_device_set_netdev() as an
> alternative to get_netdev") introduced an API ib_device_get_netdev.
> The SMC-R variant of the SMC protocol continued to use the old API
> ib_device_ops.get_netdev() to lookup netdev. As this commit 8d159eb2117b
> ("RDMA/mlx5: Use IB set_netdev and get_netdev functions") removed the
> get_netdev callback from mlx5_ib_dev_common_roce_ops, calling
> ib_device_ops.get_netdev didn't work any more at least by using a mlx5
> device driver. Thus, using ib_device_set_netdev() now became mandatory.
> 
> Replace ib_device_ops.get_netdev() with ib_device_get_netdev().
> 
> Fixes: 54903572c23c ("net/smc: allow pnetid-less configuration")
> Fixes: 8d159eb2117b ("RDMA/mlx5: Use IB set_netdev and get_netdev functions")
> Reported-by: Aswin K <aswin@...ux.ibm.com>
> Reviewed-by: Gerd Bayer <gbayer@...ux.ibm.com>
> Signed-off-by: Wenjia Zhang <wenjia@...ux.ibm.com>

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


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