linux-kernel - Re: [PATCH net-next RESEND v3 2/2] net/smc: support ipv4 mapped ipv6 addr client for smc-r v2

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Message-ID: <20241211195440.54b37a79.pasic@linux.ibm.com>
Date: Wed, 11 Dec 2024 19:54:40 +0100
From: Halil Pasic <pasic@...ux.ibm.com>
To: Guangguan Wang <guangguan.wang@...ux.alibaba.com>
Cc: wenjia@...ux.ibm.com, jaka@...ux.ibm.com, alibuda@...ux.alibaba.com,
        tonylu@...ux.alibaba.com, guwen@...ux.alibaba.com, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        horms@...nel.org, linux-rdma@...r.kernel.org,
        linux-s390@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Dust Li
 <dust.li@...ux.alibaba.com>,
        Halil Pasic <pasic@...ux.ibm.com>
Subject: Re: [PATCH net-next RESEND v3 2/2] net/smc: support ipv4 mapped
 ipv6 addr client for smc-r v2

On Wed, 11 Dec 2024 10:30:55 +0800
Guangguan Wang <guangguan.wang@...ux.alibaba.com> wrote:

> AF_INET6 is not supported for smc-r v2 client before, even if the
> ipv6 addr is ipv4 mapped. Thus, when using AF_INET6, smc-r connection
> will fallback to tcp, especially for java applications running smc-r.
> This patch support ipv4 mapped ipv6 addr client for smc-r v2. Clients
> using real global ipv6 addr is still not supported yet.
> 
> Signed-off-by: Guangguan Wang <guangguan.wang@...ux.alibaba.com>
> Reviewed-by: Wen Gu <guwen@...ux.alibaba.com>
> Reviewed-by: Dust Li <dust.li@...ux.alibaba.com>
> Reviewed-by: D. Wythe <alibuda@...ux.alibaba.com>
> Reviewed-by: Wenjia Zhang <wenjia@...ux.ibm.com>
> Reviewed-by: Halil Pasic <pasic@...ux.ibm.com>

Sorry for the late remark, but does this need a Fixes tag? I mean
my gut feeling is that this is a bugfix -- i.e. should have been
working from the get go -- and not a mere enhancement. No strong
opinions here.

Halil