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Date:	Tue, 3 Nov 2015 18:49:05 +0000
From:	Haiyang Zhang <haiyangz@...rosoft.com>
To:	David Miller <davem@...emloft.net>
CC:	"eric.dumazet@...il.com" <eric.dumazet@...il.com>,
	KY Srinivasan <kys@...rosoft.com>,
	"edumazet@...gle.com" <edumazet@...gle.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH net-next] net: increase LL_MAX_HEADER if HYPERV_NET is
 enabled



> -----Original Message-----
> From: David Miller [mailto:davem@...emloft.net]
> Sent: Tuesday, November 3, 2015 1:20 PM
> To: Haiyang Zhang <haiyangz@...rosoft.com>
> Cc: eric.dumazet@...il.com; KY Srinivasan <kys@...rosoft.com>;
> edumazet@...gle.com; netdev@...r.kernel.org
> Subject: Re: [PATCH net-next] net: increase LL_MAX_HEADER if HYPERV_NET
> is enabled
> 
> From: Haiyang Zhang <haiyangz@...rosoft.com>
> Date: Tue, 3 Nov 2015 17:34:47 +0000
> 
> > But we still keep this busy return in our code, just for "weird corner cases".
> 
> The queue_stopped condition must be precise.

The only case we return NETDEV_TX_BUSY is when the outgoing ring buffer is full, 
which almost never happens because we stop the xmit queue if ring is <10% available.

Thanks,
- Haiyang
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