commit 6502ca527f8ed2c3bb327d9db8e7e6e7dcbef511
author YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> Sun Jan 13 05:01:51 2013 +0000
committer David S. Miller <davem@davemloft.net> Sun Jan 13 20:17:13 2013 -0500
tree ac76c5941e5ec45ab6ee8b0aa26db67eb67930f6
parent 3e4e4c1f2da66b29ee9379ca29f8dd620c2b5a1f

ipv6: Introduce ip6_flowinfo() to extract flowinfo (tclass + flowlabel).

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/ipv6.h

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index fcbc646..ed67208 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -555,6 +555,11 @@
 	*(__be32 *)hdr = ntohl(0x60000000 | (tclass << 20)) | flowlabel;
 }
 
+static inline __be32 ip6_flowinfo(const struct ipv6hdr *hdr)
+{
+	return *(__be32 *)hdr & IPV6_FLOWINFO_MASK;
+}
+
 /*
  *	Prototypes exported by ipv6
  */