datapath: Rename linux-2.6 and compat-2.6 directories.

[sliver-openvswitch.git] / datapath / linux / compat / include / linux / ip.h

diff --git a/datapath/linux/compat/include/linux/ip.h b/datapath/linux/compat/include/linux/ip.h
new file mode 100644 (file)
index 0000000..6ff7152
--- /dev/null
+++ b/datapath/linux/compat/include/linux/ip.h
@@ -0,0 +1,19 @@
+#ifndef __LINUX_IP_WRAPPER_H
+#define __LINUX_IP_WRAPPER_H 1
+
+#include_next <linux/ip.h>
+
+#ifndef HAVE_SKBUFF_HEADER_HELPERS
+#include <linux/skbuff.h>
+static inline struct iphdr *ip_hdr(const struct sk_buff *skb)
+{
+       return (struct iphdr *)skb_network_header(skb);
+}
+
+static inline unsigned int ip_hdrlen(const struct sk_buff *skb)
+{
+       return ip_hdr(skb)->ihl * 4;
+}
+#endif /* !HAVE_SKBUFF_HEADER_HELPERS */
+
+#endif