2 files changed, 14 insertions, 0 deletions

diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index dda72bf5b9b4..16baef4dab7e 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -503,6 +503,13 @@ static inline int sctp_frag_point(const struct sctp_sock *sp, int pmtu)
         return frag;
 }
 
+static inline void sctp_assoc_pending_pmtu(struct sctp_association *asoc)
+{
+
+        sctp_assoc_sync_pmtu(asoc);
+        asoc->pmtu_pending = 0;
+}
+
 /* Walk through a list of TLV parameters.  Don't trust the
  * individual parameter lengths and instead depend on
  * the chunk length to indicate when to stop.  Make sure
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 5e81984b8478..ee4559b11302 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -912,6 +912,9 @@ struct sctp_transport {
          */
         __u16 pathmaxrxt;
 
+        /* is the Path MTU update pending on this tranport */
+        __u8 pmtu_pending;
+
         /* PMTU       : The current known path MTU.  */
         __u32 pathmtu;
 
@@ -1006,6 +1009,7 @@ void sctp_transport_raise_cwnd(struct sctp_transport *, __u32, __u32);
 void sctp_transport_lower_cwnd(struct sctp_transport *, sctp_lower_cwnd_t);
 unsigned long sctp_transport_timeout(struct sctp_transport *);
 void sctp_transport_reset(struct sctp_transport *);
+void sctp_transport_update_pmtu(struct sctp_transport *, u32);
 
 
 /* This is the structure we use to queue packets as they come into
@@ -1565,6 +1569,9 @@ struct sctp_association {
          */
         __u16 pathmaxrxt;
 
+        /* Flag that path mtu update is pending */
+        __u8   pmtu_pending;
+
         /* Association : The smallest PMTU discovered for all of the
          * PMTU        : peer's transport addresses.
          */