netdev - Re: [PATCH net] net/smc: Fix lookup of netdev by using ib_device_get

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Message-ID: <2d2cd3ad-df2e-4f4a-afb0-f43f55e08091@linux.ibm.com>
Date: Tue, 5 Nov 2024 10:53:25 +0100
From: Wenjia Zhang <wenjia@...ux.ibm.com>
To: Paolo Abeni <pabeni@...hat.com>, 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>
Cc: 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 31.10.24 11:01, Paolo Abeni wrote:
> On 10/25/24 09:23, 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>
> 
> Please adjust the commit message as per Leon suggestion. You can retain
> all the ack collected so far.
> 
> Thanks,
> 
> Paolo
> 
Hi Paolo,

thank you for the reminder!
Sure, I'll do it.

Thanks,
Wenjia