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authorLi RongQing <roy.qing.li@gmail.com>2014-01-15 13:03:30 +0400
committerDavid S. Miller <davem@davemloft.net>2014-01-16 03:53:18 +0400
commitd76ed22b225c02228c643ae336f76e086fdc32f0 (patch)
treee420a54624555e185458c2d8a443820ef9a276e5 /include/net
parente96a41ebde3b66dbb59d3ffa0a38dff6e5ca25a9 (diff)
downloadlinux-d76ed22b225c02228c643ae336f76e086fdc32f0.tar.xz
ipv6: move IPV6_TCLASS_SHIFT into ipv6.h and define a helper
Two places defined IPV6_TCLASS_SHIFT, so we should move it into ipv6.h, and use this macro as possible. And define ip6_tclass helper to return tclass Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/ipv6.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 12079c65ea3e..6d80f51897a5 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -239,6 +239,7 @@ struct ip6_flowlabel {
#define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF)
#define IPV6_FLOWLABEL_MASK cpu_to_be32(0x000FFFFF)
#define IPV6_TCLASS_MASK (IPV6_FLOWINFO_MASK & ~IPV6_FLOWLABEL_MASK)
+#define IPV6_TCLASS_SHIFT 20
struct ipv6_fl_socklist {
struct ipv6_fl_socklist __rcu *next;
@@ -681,6 +682,10 @@ static inline __be32 ip6_flowlabel(const struct ipv6hdr *hdr)
return *(__be32 *)hdr & IPV6_FLOWLABEL_MASK;
}
+static inline u8 ip6_tclass(__be32 flowinfo)
+{
+ return ntohl(flowinfo & IPV6_TCLASS_MASK) >> IPV6_TCLASS_SHIFT;
+}
/*
* Prototypes exported by ipv6
*/