From mboxrd@z Thu Jan 1 00:00:00 1970 From: Haiyang Zhang Subject: RE: [PATCH net-next] net: increase LL_MAX_HEADER if HYPERV_NET is enabled Date: Tue, 3 Nov 2015 18:49:05 +0000 Message-ID: References: <20151103.103319.1465681990237533576.davem@davemloft.net> <1446568644.23275.65.camel@edumazet-glaptop2.roam.corp.google.com> <20151103.132015.944876907781932861.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Cc: "eric.dumazet@gmail.com" , KY Srinivasan , "edumazet@google.com" , "netdev@vger.kernel.org" To: David Miller Return-path: Received: from mail-bl2on0142.outbound.protection.outlook.com ([65.55.169.142]:14127 "EHLO na01-bl2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751593AbbKCStI convert rfc822-to-8bit (ORCPT ); Tue, 3 Nov 2015 13:49:08 -0500 In-Reply-To: <20151103.132015.944876907781932861.davem@davemloft.net> Content-Language: en-US Sender: netdev-owner@vger.kernel.org List-ID: > -----Original Message----- > From: David Miller [mailto:davem@davemloft.net] > Sent: Tuesday, November 3, 2015 1:20 PM > To: Haiyang Zhang > Cc: eric.dumazet@gmail.com; KY Srinivasan ; > edumazet@google.com; netdev@vger.kernel.org > Subject: Re: [PATCH net-next] net: increase LL_MAX_HEADER if HYPERV_NET > is enabled > > From: Haiyang Zhang > 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