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From: Eric Dumazet <eric.dumazet@gmail.com>
To: David Miller <davem@davemloft.net>
Cc: alexander.h.duyck@intel.com, jeffrey.t.kirsher@intel.com,
	donald.c.skidmore@intel.com, gregory.v.rose@intel.com,
	john.r.fastabend@intel.com, jesse.brandeburg@intel.com,
	netdev@vger.kernel.org
Subject: Re: TSO not 10G friendly if peer is close enough
Date: Wed, 18 Apr 2012 05:00:38 +0200	[thread overview]
Message-ID: <1334718038.2472.76.camel@edumazet-glaptop> (raw)
In-Reply-To: <20120417.174759.327568768780440362.davem@davemloft.net>

On Tue, 2012-04-17 at 17:47 -0400, David Miller wrote:
> From: Eric Dumazet <eric.dumazet@gmail.com>
> Date: Tue, 17 Apr 2012 23:38:42 +0200
> 
> > Hmm... maybe tcp_trim_head should not trim but only update an offset in
> > skb... With some luck, offset can reach skb->len when all data is
> > ACKnowledged...
> 
> This is definitely the way to fix this.  Just essentially defer all
> the page operations until later when the entire SKB is consumed.

Yes, I'll implement this today.

Thanks 

  reply	other threads:[~2012-04-18  3:00 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-17  9:06 [BUG] ixgbe: something wrong with queue selection ? Eric Dumazet
2012-04-17  9:16 ` Jeff Kirsher
2012-04-17 16:01   ` Alexander Duyck
2012-04-17 16:38     ` John Fastabend
2012-04-17 17:07       ` Ben Hutchings
2012-04-17 16:46     ` Eric Dumazet
2012-04-17 21:38       ` TSO not 10G friendly if peer is close enough Eric Dumazet
2012-04-17 21:47         ` David Miller
2012-04-18  3:00           ` Eric Dumazet [this message]
2012-04-18 15:49         ` [PATCH net-next] tcp: avoid expensive pskb_expand_head() calls Eric Dumazet
     [not found]           ` <4F8EF317.10504@hp.com>
2012-04-18 17:16             ` Eric Dumazet
2012-04-18 17:30               ` Rick Jones
2012-04-18 17:40                 ` Eric Dumazet
2012-04-18 18:40           ` Neal Cardwell
2012-04-18 19:18             ` Eric Dumazet
2012-04-18 19:51               ` [PATCH v2 " Eric Dumazet
2012-04-19 11:10                 ` Ilpo Järvinen
2012-04-19 11:30                   ` Eric Dumazet
2012-04-19 11:40                     ` Eric Dumazet
2012-04-19 11:57                       ` Ilpo Järvinen
2012-04-19 12:44                         ` Eric Dumazet
2012-04-20 12:27                           ` Ilpo Järvinen
2012-04-19 13:18                     ` Eric Dumazet
2012-04-19 13:52                       ` Eric Dumazet
2012-04-19 14:10                         ` Eric Dumazet
2012-04-19 17:20                           ` Rick Jones
2012-04-19 17:25                             ` Eric Dumazet
2012-04-19 17:48                               ` Rick Jones
2012-04-19 18:00                                 ` Eric Dumazet
2012-04-19 18:05                                   ` Rick Jones
2012-04-18 19:41           ` [PATCH " Vijay Subramanian
2012-04-18 19:49             ` Eric Dumazet

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