netdev - PATCH: veth: Zero timestamp in xmit path.

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Message-ID: <4A661B2F.7000608@candelatech.com>
Date:	Tue, 21 Jul 2009 12:46:55 -0700
From:	Ben Greear <greearb@...delatech.com>
To:	NetDev <netdev@...r.kernel.org>
Subject: PATCH:  veth:  Zero timestamp in xmit path.

This patch zero's the timestamp before handing the packet to
the peer interface.  This lets the peer recalculate the rx timestamp
if it cares about timestamps.

The patch is against net-next, compile tested there.  Similar patch was
functionally tested against 2.6.31-rc3.

Signed-Off-By:  Ben Greear<greearb@...delatech.com>

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index f1d753d..190f784 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -171,6 +171,7 @@ static int veth_xmit(struct sk_buff *skb, struct net_device *dev)
  	if (skb->len > (rcv->mtu + MTU_PAD))
  		goto rx_drop;

+        skb->tstamp.tv64 = 0;
  	skb->pkt_type = PACKET_HOST;
  	skb->protocol = eth_type_trans(skb, rcv);
  	if (dev->features & NETIF_F_NO_CSUM)

Thanks,
Ben

-- 
Ben Greear <greearb@...delatech.com>
Candela Technologies Inc  http://www.candelatech.com

View attachment "veth_ts.patch" of type "text/plain" (423 bytes)