linux-kernel - Re: Re: 3.7-rc2 regression : file copied to CIFS-mounted directory corrupted

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Message-ID: <1350983152.8609.1635.camel@edumazet-glaptop>
Date:	Tue, 23 Oct 2012 11:05:52 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	jongman.heo@...sung.com
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"edumazet@...gle.com" <edumazet@...gle.com>,
	Shreyas Bhatewara <sbhatewara@...are.com>,
	"VMware, Inc." <pv-drivers@...are.com>
Subject: Re: Re: 3.7-rc2 regression : file copied to CIFS-mounted directory
 corrupted

On Tue, 2012-10-23 at 08:17 +0000, Jongman Heo wrote:

> 
> FYI, vmxnet3 driver is used for ethernet.

Yes, this driver needs some changes

#define VMXNET3_MAX_TX_BUF_SIZE  (1 << 14)

Thats 16KB

As we can now provide up to 32KB fragments we broke something.

vmxnet3_tq_xmit() needs to split large frags into 2 parts.
(And without going to skb_linearize() of course !)

Any volunteer ?

Thanks !


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