linux-kernel - Re: [PATCH net-next 0/5] Some cleanup and bugfix for desc filling

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Message-Id: <20181016.101011.368948030874381665.davem@davemloft.net>
Date:   Tue, 16 Oct 2018 10:10:11 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     linyunsheng@...wei.com
Cc:     huangdaode@...ilicon.com, xuwei5@...ilicon.com,
        liguozhu@...ilicon.com, Yisen.Zhuang@...wei.com,
        john.garry@...wei.com, linuxarm@...wei.com, salil.mehta@...wei.com,
        lipeng321@...wei.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 0/5] Some cleanup and bugfix for desc filling

From: Yunsheng Lin <linyunsheng@...wei.com>
Date: Tue, 16 Oct 2018 19:58:47 +0800

> When retransmiting packets, skb_cow_head which is called in
> hns3_set_tso may clone a new header. And driver will clear the
> checksum of the header after doing DMA map, so HW will read the
> old header whose L3 checksum is not cleared and calculate a
> wrong L3 checksum.
> 
> Also When sending a big fragment using multiple buffer descriptor,
> hns3 does one maping, but do multiple unmapping when tx is done,
> which may cause unmapping problem.
> 
> This patchset does some cleanup before fixing the above problem.

Series applied.