netdev - Re: [PATCH V2 net-next 5/7] rds: zerocopy Tx support.

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Message-ID: <CAF=yD-KDhet9P+DybdsWastqK=9mju6uhH8z2YJr_3cz5PLMCg@mail.gmail.com>
Date:   Wed, 14 Feb 2018 19:15:17 -0500
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Sowmini Varadhan <sowmini.varadhan@...cle.com>
Cc:     Network Development <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>, rds-devel@....oracle.com,
        Santosh Shilimkar <santosh.shilimkar@...cle.com>
Subject: Re: [PATCH V2 net-next 5/7] rds: zerocopy Tx support.

On Wed, Feb 14, 2018 at 7:09 PM, Sowmini Varadhan
<sowmini.varadhan@...cle.com> wrote:
> On (02/14/18 18:48), Willem de Bruijn wrote:
>>
>> If the missing break is intentional, no need to respin just for the other
>> minor comments.
>
> yes the missing break is intentional-  the function returns the
> size of the scatterlist needed for RDMA, and RDS_CMSG_ZCOPY_COOKIE
> (like RDMA_DEST and RDMA_MAP) is meta-data that does not change
> that size.
>
> I expect to be in the neighborhood of this  code pretty soon, to get
> the additional opimization of passing up the zcopy completion
> as part of recvmsg (see the discussion in
> https://www.mail-archive.com/netdev@vger.kernel.org/msg212788.html)
>
> I can take care of the other code-cleanup comment suggestions in
> here at that time..

Sounds good.