linux-kernel - Re: [PATCH net-next 0/6] net/smc: several features's implementation for smc v2.1

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Message-ID: <3fa272d7-d3a5-374a-1161-4e9008240ba6@linux.ibm.com>
Date:   Thu, 17 Aug 2023 08:43:46 +0200
From:   Jan Karcher <jaka@...ux.ibm.com>
To:     Guangguan Wang <guangguan.wang@...ux.alibaba.com>,
        wenjia@...ux.ibm.com, kgraul@...ux.ibm.com,
        tonylu@...ux.alibaba.com, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com
Cc:     horms@...nel.org, alibuda@...ux.alibaba.com,
        guwen@...ux.alibaba.com, linux-s390@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 0/6] net/smc: several features's implementation
 for smc v2.1



On 16/08/2023 10:33, Guangguan Wang wrote:
> This patch set implement several new features in SMC v2.1(https://
> www.ibm.com/support/pages/node/7009315), including vendor unique
> experimental options, max connections per lgr negotiation, max links
> per lgr negotiation.
> 
> I have removed the RFC tag and changed the patch series to formal
> patch series from this version.

Thank you Guangguan for your effort!

I'm done with the first iteration of review.
Please see the comments.

- Jan


> 
> RFC v2 - v1:
>   - more description in commit message
>   - modify SMC_CONN_PER_LGR_xxx and SMC_LINKS_ADD_LNK_xxx
>     macro defination and usage
>   - rename variable release_ver to release_nr
>   - remove redundant release version check in client
>   - explicitly set the rc value in smc_llc_cli/srv_add_link
> 
> RFC v1 - RFC v2:
>   - Remove ini pointer NULL check and fix code style in
>     smc_clc_send_confirm_accept.
>   - Optimize the max_conns check in smc_clc_xxx_v2x_features_validate.
> 
> Guangguan Wang (6):
>    net/smc: support smc release version negotiation in clc handshake
>    net/smc: add vendor unique experimental options area in clc handshake
>    net/smc: support smc v2.x features validate
>    net/smc: support max connections per lgr negotiation
>    net/smc: support max links per lgr negotiation in clc handshake
>    net/smc: Extend SMCR v2 linkgroup netlink attribute
> 
>   include/uapi/linux/smc.h |   2 +
>   net/smc/af_smc.c         |  83 ++++++++++++++++------
>   net/smc/smc.h            |   5 +-
>   net/smc/smc_clc.c        | 150 ++++++++++++++++++++++++++++++++-------
>   net/smc/smc_clc.h        |  53 ++++++++++++--
>   net/smc/smc_core.c       |  13 +++-
>   net/smc/smc_core.h       |  25 +++++++
>   net/smc/smc_llc.c        |  25 +++++--
>   8 files changed, 301 insertions(+), 55 deletions(-)
>