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Date: Wed, 19 Jan 2000 16:50:51 +0200
From: Ruslan Ermilov <ru@FreeBSD.org>
To: Garrett Wollman <wollman@FreeBSD.org>,
	Bill Fenner <fenner@FreeBSD.org>
Cc: net@FreeBSD.org
Subject: [Request for review]
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Hi!

Attached patch makes it possible for the user process
to be notified about the interface MTU change via the
routing socket.  This will assist to resolve PR 15494.

Comments?  Objections?  Opinions?


Thanks,
-- 
Ruslan Ermilov		Sysadmin and DBA of the
ru@ucb.crimea.ua	United Commercial Bank,
ru@FreeBSD.org		FreeBSD committer,
+380.652.247.647	Simferopol, Ukraine

http://www.FreeBSD.org	The Power To Serve
http://www.oracle.com	Enabling The Information Age

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Index: if.c
===================================================================
RCS file: /home/ncvs/src/sys/net/if.c,v
retrieving revision 1.82
diff -u -p -1 -2 -r1.82 if.c
--- if.c	1999/12/30 18:29:55	1.82
+++ if.c	2000/01/19 14:36:19
@@ -839,26 +839,28 @@ ifioctl(so, cmd, data, p)
 	case SIOCSIFMTU:
 	{
 		u_long oldmtu = ifp->if_mtu;
 
 		error = suser(p);
 		if (error)
 			return (error);
 		if (ifp->if_ioctl == NULL)
 			return (EOPNOTSUPP);
 		if (ifr->ifr_mtu < IF_MINMTU || ifr->ifr_mtu > IF_MAXMTU)
 			return (EINVAL);
 		error = (*ifp->if_ioctl)(ifp, cmd, data);
-		if (error == 0)
+		if (error == 0) {
 			getmicrotime(&ifp->if_lastchange);
+			rt_ifmsg(ifp);
+		}
 		/*
 		 * If the link MTU changed, do network layer specific procedure.
 		 */
 		if (ifp->if_mtu != oldmtu) {
 #ifdef INET6
 			nd6_setmtu(ifp);
 #endif
 		}
 		return (error);
 	}
 
 	case SIOCADDMULTI:

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