From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Liu Subject: [PATCH net-next] xen-netfront: convert to GRO API Date: Mon, 30 Sep 2013 13:46:34 +0100 Message-ID: <1380545194-13419-1-git-send-email-wei.liu2@citrix.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , Wei Liu , Anirban Chakraborty , Ian Campbell To: Return-path: Received: from smtp.citrix.com ([66.165.176.89]:34907 "EHLO SMTP.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754079Ab3I3Mqg (ORCPT ); Mon, 30 Sep 2013 08:46:36 -0400 Sender: netdev-owner@vger.kernel.org List-ID: Anirban was seeing netfront received MTU size packets, which downgraded throughput. The following patch makes netfront use GRO API which improves throughput for that case. Signed-off-by: Wei Liu Cc: Anirban Chakraborty Cc: Ian Campbell Acked-by: Konrad Wilk --- drivers/net/xen-netfront.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index 36808bf..dd1011e 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -952,7 +952,7 @@ static int handle_incoming_queue(struct net_device *dev, u64_stats_update_end(&stats->syncp); /* Pass it up. */ - netif_receive_skb(skb); + napi_gro_receive(&np->napi, skb); } return packets_dropped; @@ -1051,6 +1051,8 @@ err: if (work_done < budget) { int more_to_do = 0; + napi_gro_flush(napi, false); + local_irq_save(flags); RING_FINAL_CHECK_FOR_RESPONSES(&np->rx, more_to_do); -- 1.7.10.4