Re: [PATCH net 0/2] Fragmented SKB corrections

From	David Miller <davem@davemloft.net>
Newsgroups	linux.kernel
Subject	Re: [PATCH net 0/2] Fragmented SKB corrections
Date	2017-07-16 06:40 +0200
Message-ID	<u3JvA-2qm-3@gated-at.bofh.it> (permalink)
References	<u3i2l-1SH-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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From: Doug Berger <opendmb@gmail.com>
Date: Fri, 14 Jul 2017 16:12:08 -0700

> Two issues were observed in a review of the bcmgenet driver support for
> fragmented SKBs which are addressed by this patch set.
> 
> The first addresses a problem that could occur if the driver is not able
> to DMA map a fragment of the SKB.  This would be a highly unusual event
> but it would leave the hardware descriptors in an invalid state which
> should be prevented.
> 
> The second is a hazard that could occur if the driver is able to reclaim
> the first control block of a fragmented SKB before all of its fragments
> have completed processing by the hardware.  In this case the SKB could
> be freed leading to reuse of memory that is still in use by hardware.

Series applied, thanks.

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[PATCH net 0/2] Fragmented SKB corrections Doug Berger <opendmb@gmail.com> - 2017-07-15 01:20 +0200
  [PATCH net 2/2] net: bcmgenet: Free skb after last Tx frag Doug Berger <opendmb@gmail.com> - 2017-07-15 01:20 +0200
  [PATCH net 1/2] net: bcmgenet: Fix unmapping of fragments in bcmgenet_xmit() Doug Berger <opendmb@gmail.com> - 2017-07-15 01:20 +0200
  Re: [PATCH net 0/2] Fragmented SKB corrections David Miller <davem@davemloft.net> - 2017-07-16 06:40 +0200

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