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Date: Wed, 10 Jul 2013 17:42:14 -0700 From: Eric Dumazet <eric.dumazet@...il.com> To: Alexander Duyck <alexander.h.duyck@...el.com> Cc: netdev@...r.kernel.org, stephen@...workplumber.org, pshelar@...ira.com, joseph.gasparakis@...el.com, jesse@...ira.com Subject: Re: [PATCH net v2] gso: Update tunnel segmentation to support Tx checksum offload On Wed, 2013-07-10 at 17:05 -0700, Alexander Duyck wrote: > This change makes it so that the GRE and VXLAN tunnels can make use of Tx > checksum offload support provided by some drivers via the hw_enc_features. > Without this fix enabling GSO means sacrificing Tx checksum offload and > this actually leads to a performance regression as shown below: > > Utilization > Send > Throughput local GSO > 10^6bits/s % S state > 6276.51 8.39 enabled > 7123.52 8.42 disabled While testing your patch, I discovered TSO support is completely broken on GRE, using bnx2x testbed. Oh well. It seems Nicira guys do not test a lot their patches. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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