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Re: [PATCH] net: preserve IP control block during GSO segmentation

From Konstantin Khlebnikov <koct9i@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH] net: preserve IP control block during GSO segmentation
Date 2016-01-08 13:20 +0100
Message-ID <qOEbn-6yE-1@gated-at.bofh.it> (permalink)
References <qOE1J-6uc-45@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Fri, Jan 8, 2016 at 3:00 PM, Konstantin Khlebnikov <koct9i@gmail.com> wrote:
> Skb_gso_segment() uses skb control block during segmentation.
> This patch adds 32-bytes room for previous control block which
> will be copied into all resulting segments.
>
> This patch fixes kernel crash during fragmenting forwarded packets.
> Fragmentation requires valid IP CB in skb for clearing ip options.
> Also patch removes custom save/restore in ovs code, now it's redundant.
>
> Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
> Link: http://lkml.kernel.org/r/CALYGNiP-0MZ-FExV2HutTvE9U-QQtkKSoE--KN=JQE5STYsjAA@mail.gmail.com

This patch is alternative for [PATCH] net: prevent corruption of skb when using
skb_gso_segment by Thadeu Lima de Souza Cascardo. This version have
no stack allocations and no changes in code. It just shifts gso cb.

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[PATCH] net: preserve IP control block during GSO segmentation Konstantin Khlebnikov <koct9i@gmail.com> - 2016-01-08 13:10 +0100
  Re: [PATCH] net: preserve IP control block during GSO segmentation Konstantin Khlebnikov <koct9i@gmail.com> - 2016-01-08 13:20 +0100
  RE: [PATCH] net: preserve IP control block during GSO segmentation David Laight <David.Laight@ACULAB.COM> - 2016-01-08 13:20 +0100
    Re: [PATCH] net: preserve IP control block during GSO segmentation Thadeu Lima de Souza Cascardo <cascardo@redhat.com> - 2016-01-08 13:30 +0100
    Re: [PATCH] net: preserve IP control block during GSO segmentation Zang MingJie <zealot0630@gmail.com> - 2016-01-11 09:20 +0100
      Re: [PATCH] net: preserve IP control block during GSO segmentation Cong Wang <xiyou.wangcong@gmail.com> - 2016-01-12 02:00 +0100
  Re: [PATCH] net: preserve IP control block during GSO segmentation Thadeu Lima de Souza Cascardo <cascardo@redhat.com> - 2016-01-08 13:20 +0100

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