1 files changed, 25 insertions, 0 deletions
diff --git a/include/net/ah.h b/include/net/ah.h
new file mode 100644
index 00000000..f0129f79
--- /dev/null
+++ b/include/net/ah.h
@@ -0,0 +1,25 @@
+#ifndef _NET_AH_H
+#define _NET_AH_H
+
+#include <linux/skbuff.h>
+
+/* This is the maximum truncated ICV length that we know of. */
+#define MAX_AH_AUTH_LEN	12
+
+struct crypto_ahash;
+
+struct ah_data {
+	int			icv_full_len;
+	int			icv_trunc_len;
+
+	struct crypto_ahash	*ahash;
+};
+
+struct ip_auth_hdr;
+
+static inline struct ip_auth_hdr *ip_auth_hdr(const struct sk_buff *skb)
+{
+	return (struct ip_auth_hdr *)skb_transport_header(skb);
+}
+
+#endif