netdev - RE: [PATCH net-next,v2] hyperv: Add handling of IP header with option field in netvsc_set

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Message-ID: <e660408eec9a48f088ae8a99036e223e@DFM-DB3MBX15-06.exchange.corp.microsoft.com>
Date:	Tue, 14 Oct 2014 21:47:33 +0000
From:	Haiyang Zhang <haiyangz@...rosoft.com>
To:	David Miller <davem@...emloft.net>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	KY Srinivasan <kys@...rosoft.com>,
	"olaf@...fle.de" <olaf@...fle.de>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"driverdev-devel@...uxdriverproject.org" 
	<driverdev-devel@...uxdriverproject.org>
Subject: RE: [PATCH net-next,v2] hyperv: Add handling of IP header with option
 field in netvsc_set_hash()



> -----Original Message-----
> From: David Miller [mailto:davem@...emloft.net]
> Sent: Tuesday, October 14, 2014 5:37 PM
> To: Haiyang Zhang
> Cc: netdev@...r.kernel.org; KY Srinivasan; olaf@...fle.de;
> jasowang@...hat.com; linux-kernel@...r.kernel.org; driverdev-
> devel@...uxdriverproject.org
> Subject: Re: [PATCH net-next,v2] hyperv: Add handling of IP header with option
> field in netvsc_set_hash()
> 
> From: Haiyang Zhang <haiyangz@...rosoft.com>
> Date: Tue, 14 Oct 2014 15:16:28 -0700
> 
> > In case that the IP header has optional field at the end, this patch
> > will get the port numbers after that field, and compute the hash.
> >
> > Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
> > Reviewed-by: K. Y. Srinivasan <kys@...rosoft.com>
> 
> Instead of adding hack after hack after hack to your internal header parser, just
> use the generic flow dissector we already have in the kernel to fetch out the
> values you need.
> 
> __skb_flow_get_ports() etc.

Thanks. I will update the patch.

- Haiyang

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