ipv6: helper function to get tclass
Implement helper inline function to get traffic class from IPv6 header.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 743a16a..4847a64 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -233,6 +233,11 @@
return (struct ipv6hdr *)skb_transport_header(skb);
}
+static inline __u8 ipv6_tclass(const struct ipv6hdr *iph)
+{
+ return (ntohl(*(__be32 *)iph) >> 20) & 0xff;
+}
+
/*
This structure contains results of exthdrs parsing
as offsets from skb->nh.