-From 15640420669b0a2e2471f586c6cfdef232a42277 Mon Sep 17 00:00:00 2001
+From 97f5cf4f788940dfb06048aa090c420114ef80ca Mon Sep 17 00:00:00 2001
 From: Michio Honda <micchie@sfc.wide.ad.jp>
 Date: Fri, 22 Aug 2014 17:25:29 +0200
 Subject: [PATCH] datapath: Add support for netmap/VALE

 
 	call_rcu(&netdev_vport->rcu, free_port_rcu);
 }
@@ -244,6 +261,10 @@ static int netdev_send(struct vport *vport, struct sk_buff *skb)
 
 	skb->dev = netdev_vport->dev;
 	len = skb->len;

+To use netmap API 4, pass -DNETMAP_API_4 to EXTRA_CFLAGS
+in datapath/linux/Kbuild.in
diff --git a/Makefile.am b/Makefile.am
index 59a1466..1f59e74 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -87,6 +87,7 @@ docs = \
 	INSTALL.XenServer.md \
 	INSTALL.userspace.md \
 	INSTALL.Windows.md \
