Messages in this thread | | | From | KY Srinivasan <> | Subject | RE: [PATCH net 1/1] hv_netvsc: Fix a bug in netvsc_start_xmit() | Date | Tue, 28 Apr 2015 03:23:52 +0000 |
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> -----Original Message----- > From: David Miller [mailto:davem@davemloft.net] > Sent: Monday, April 27, 2015 7:57 PM > To: KY Srinivasan > Cc: netdev@vger.kernel.org; linux-kernel@vger.kernel.org; > devel@linuxdriverproject.org; olaf@aepfle.de; apw@canonical.com; > jasowang@redhat.com > Subject: Re: [PATCH net 1/1] hv_netvsc: Fix a bug in netvsc_start_xmit() > > From: "K. Y. Srinivasan" <kys@microsoft.com> > Date: Mon, 27 Apr 2015 18:14:50 -0700 > > > Commit commit b08cc79155fc26d0d112b1470d1ece5034651a4b eliminated > memory > > allocation in the packet send path. This commit introduced a bug since it > > did not account for the case if the skb was cloned. Fix this bug by > > using the pre-reserved head room only if the skb is not cloned. > > > > Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> > > We have generic infrastructure to do this, please try instead: > > err = skb_cow_head(skb, pkt_sz); > > this will take care of everything for you and you can get rid > of all of this dynamic memory allocation etc. in this code > path.
Thanks David; I will resubmit this patch.
Regards,
K. Y
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