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

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Message-ID: <c1a7b672-4a43-4494-acd1-500026566f69@linux.ibm.com>
Date:   Fri, 1 Dec 2023 17:32:15 +0100
From:   Alexandra Winter <wintera@...ux.ibm.com>
To:     Wen Gu <guwen@...ux.alibaba.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 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=