net: ip, ipv6: handle gso skbs in forwarding path

[pandora-kernel.git] / include / linux / skbuff.h

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 28fd77f..13bd6d0 100644 (file)
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2557,5 +2557,22 @@ static inline bool skb_is_recycleable(const struct sk_buff *skb, int skb_size)
 
        return true;
 }
+
+/**
+ * skb_gso_network_seglen - Return length of individual segments of a gso packet
+ *
+ * @skb: GSO skb
+ *
+ * skb_gso_network_seglen is used to determine the real size of the
+ * individual segments, including Layer3 (IP, IPv6) and L4 headers (TCP/UDP).
+ *
+ * The MAC/L2 header is not accounted for.
+ */
+static inline unsigned int skb_gso_network_seglen(const struct sk_buff *skb)
+{
+       unsigned int hdr_len = skb_transport_header(skb) -
+                              skb_network_header(skb);
+       return hdr_len + skb_gso_transport_seglen(skb);
+}
 #endif /* __KERNEL__ */
 #endif /* _LINUX_SKBUFF_H */