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-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 009605c56f20..d04b7abe2a4c 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -696,6 +696,11 @@ static inline bool ipv6_addr_v4mapped(const struct in6_addr *a)
cpu_to_be32(0x0000ffff))) == 0UL;
}
+static inline bool ipv6_addr_v4mapped_loopback(const struct in6_addr *a)
+{
+ return ipv6_addr_v4mapped(a) && ipv4_is_loopback(a->s6_addr32[3]);
+}
+
static inline u32 ipv6_portaddr_hash(const struct net *net,
const struct in6_addr *addr6,
unsigned int port)