diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index abde271..18ddf96 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2567,20 +2567,26 @@
 __wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
 		    __wsum csum);
 
-static inline void *skb_header_pointer(const struct sk_buff *skb, int offset,
-				       int len, void *buffer)
+static inline void *__skb_header_pointer(const struct sk_buff *skb, int offset,
+					 int len, void *data, int hlen, void *buffer)
 {
-	int hlen = skb_headlen(skb);
-
 	if (hlen - offset >= len)
-		return skb->data + offset;
+		return data + offset;
 
-	if (skb_copy_bits(skb, offset, buffer, len) < 0)
+	if (!skb ||
+	    skb_copy_bits(skb, offset, buffer, len) < 0)
 		return NULL;
 
 	return buffer;
 }
 
+static inline void *skb_header_pointer(const struct sk_buff *skb, int offset,
+				       int len, void *buffer)
+{
+	return __skb_header_pointer(skb, offset, len, skb->data,
+				    skb_headlen(skb), buffer);
+}
+
 /**
  *	skb_needs_linearize - check if we need to linearize a given skb
  *			      depending on the given device features.
diff --git a/include/net/flow_keys.h b/include/net/flow_keys.h
index 6667a05..4040f63 100644
--- a/include/net/flow_keys.h
+++ b/include/net/flow_keys.h
@@ -27,7 +27,17 @@
 	u8 ip_proto;
 };
 
-bool skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow);
-__be32 skb_flow_get_ports(const struct sk_buff *skb, int thoff, u8 ip_proto);
+bool __skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow,
+			void *data, int hlen);
+static inline bool skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow)
+{
+	return __skb_flow_dissect(skb, flow, NULL, 0);
+}
+__be32 __skb_flow_get_ports(const struct sk_buff *skb, int thoff, u8 ip_proto,
+			    void *data, int hlen_proto);
+static inline __be32 skb_flow_get_ports(const struct sk_buff *skb, int thoff, u8 ip_proto)
+{
+	return __skb_flow_get_ports(skb, thoff, ip_proto, NULL, 0);
+}
 u32 flow_hash_from_keys(struct flow_keys *keys);
 #endif