netdev - Re: [PATCH net-next v3 0/7] net/smc: implement SMCv2.1 virtual ISM device support

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Date: Mon, 4 Dec 2023 10:01:09 +0800
From: Wen Gu <guwen@...ux.alibaba.com>
To: Alexandra Winter <wintera@...ux.ibm.com>, wenjia@...ux.ibm.com,
 hca@...ux.ibm.com, gor@...ux.ibm.com, agordeev@...ux.ibm.com,
 davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, kgraul@...ux.ibm.com, jaka@...ux.ibm.com
Cc: borntraeger@...ux.ibm.com, svens@...ux.ibm.com,
 alibuda@...ux.alibaba.com, tonylu@...ux.alibaba.com, raspl@...ux.ibm.com,
 schnelle@...ux.ibm.com, linux-s390@...r.kernel.org, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v3 0/7] net/smc: implement SMCv2.1 virtual ISM
 device support



On 2023/12/2 00:32, Alexandra Winter wrote:
> 
> 
> On 30.11.23 12:28, Wen Gu wrote:
>> The fourth edition of SMCv2 adds the SMC version 2.1 feature updates for
>> SMC-Dv2 with virtual ISM. Virtual ISM are created and supported mainly by
>> OS or hypervisor software, comparable to IBM ISM which is based on platform
>> firmware or hardware.
>>
>> With the introduction of virtual ISM, SMCv2.1 makes some updates:
>>
>> - Introduce feature bitmask to indicate supplemental features.
>> - Reserve a range of CHIDs for virtual ISM.
>> - Support extended GIDs (128 bits) in CLC handshake.
>>
>> So this patch set aims to implement these updates in Linux kernel. And it
>> acts as the first part of SMC-D virtual ISM extension & loopback-ism [1].
>>
>> [1] https://lore.kernel.org/netdev/1695568613-125057-1-git-send-email-guwen@linux.alibaba.com/
>>
>> v3->v2:
>> - Rename smc_clc_fill_fce as smc_clc_fill_fce_v2x;
>> - Remove ISM_IDENT_MASK from drivers/s390/net/ism.h;
>> - Add explicitly assigning 'false' to ism_v2_capable in ism_dev_init();
>> - Remove smc_ism_set_v2_capable() helper for now, and introduce it in
>>    later loopback-ism implementation;
>>
>> v2->v1:
>> - Fix sparse complaint;
>> - Rebase to the latest net-next;
>>
>> Wen Gu (7):
>>    net/smc: Rename some variable 'fce' to 'fce_v2x' for clarity
>>    net/smc: support SMCv2.x supplemental features negotiation
>>    net/smc: introduce virtual ISM device support feature
>>    net/smc: define a reserved CHID range for virtual ISM devices
>>    net/smc: compatible with 128-bits extend GID of virtual ISM device
>>    net/smc: disable SEID on non-s390 archs where virtual ISM may be used
>>    net/smc: manage system EID in SMC stack instead of ISM driver
>>
> 
> Wen Gu,
> as you can see in [1] your patches 5/7 and 1/7 still have formatting issues.
> In this case they need to pass
> 
> scripts/checkpatch.pl --strict --max-line-length=80
> 
> (see linux/Documentation/process/coding-style.rst)
> 
> [1] https://patchwork.kernel.org/project/netdevbpf/list/?series=&submitter=&state=&q=net%2Fsmc&archive=&delegate=

Thanks. They will be fixed and I will check the patches with tests provided by
https://github.com/kuba-moo/nipa/tree/master/tests/patch