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From: Michael Tuexen <tuexen@FreeBSD.org>
Date: Tue, 16 Sep 2014 09:22:43 +0000 (UTC)
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Subject: svn commit: r271665 - head/sys/netinet
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Author: tuexen
Date: Tue Sep 16 09:22:43 2014
New Revision: 271665
URL: http://svnweb.freebsd.org/changeset/base/271665

Log:
  The MTU is handled as a 32-bit entity within the SCTP stack.
  This was reported by Peter Kasting from Google.
  
  MFC after: 3 days

Modified:
  head/sys/netinet/sctp_os_bsd.h

Modified: head/sys/netinet/sctp_os_bsd.h
==============================================================================
--- head/sys/netinet/sctp_os_bsd.h	Tue Sep 16 08:40:52 2014	(r271664)
+++ head/sys/netinet/sctp_os_bsd.h	Tue Sep 16 09:22:43 2014	(r271665)
@@ -322,7 +322,7 @@ typedef struct callout sctp_os_timer_t;
 /*      MTU              */
 /*************************/
 #define SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, af) ((struct ifnet *)ifn)->if_mtu
-#define SCTP_GATHER_MTU_FROM_ROUTE(sctp_ifa, sa, rt) ((rt != NULL) ? rt->rt_mtu : 0)
+#define SCTP_GATHER_MTU_FROM_ROUTE(sctp_ifa, sa, rt) ((uint32_t)((rt != NULL) ? rt->rt_mtu : 0))
 #define SCTP_GATHER_MTU_FROM_INTFC(sctp_ifn) ((sctp_ifn->ifn_p != NULL) ? ((struct ifnet *)(sctp_ifn->ifn_p))->if_mtu : 0)
 #define SCTP_SET_MTU_OF_ROUTE(sa, rt, mtu) do { \
                                               if (rt != NULL) \