From d02c572f4f052b0ff1c0f96f62f3a6071c71471c Mon Sep 17 00:00:00 2001 From: Ben Pfaff Date: Fri, 9 Jan 2009 11:46:06 -0800 Subject: [PATCH] datapath: Don't drop oversize GSO frames, since GSO will break them up. Fixes TCP performance problems on Xen. All credit to Justin for diagnosis. --- datapath/datapath.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/datapath/datapath.c b/datapath/datapath.c index 9d0cea78d..338147f78 100644 --- a/datapath/datapath.c +++ b/datapath/datapath.c @@ -571,7 +571,7 @@ int dp_xmit_skb(struct sk_buff *skb) { int len = skb->len; - if (packet_length(skb) > skb->dev->mtu) { + if (packet_length(skb) > skb->dev->mtu && !skb_is_gso(skb)) { printk("dropped over-mtu packet: %d > %d\n", packet_length(skb), skb->dev->mtu); kfree_skb(skb); -- 2.45.2