1 files changed, 12 insertions, 0 deletions

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index f27fd83d67d8..ad9a51130254 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -441,6 +441,18 @@ static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_add
         return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
 }
 
+static __inline__ void ipv6_select_ident(struct frag_hdr *fhdr)
+{
+        static u32 ipv6_fragmentation_id = 1;
+        static DEFINE_SPINLOCK(ip6_id_lock);
+
+        spin_lock_bh(&ip6_id_lock);
+        fhdr->identification = htonl(ipv6_fragmentation_id);
+        if (++ipv6_fragmentation_id == 0)
+                ipv6_fragmentation_id = 1;
+        spin_unlock_bh(&ip6_id_lock);
+}
+
 /*
  *      Prototypes exported by ipv6
  */