From owner-svn-src-stable-11@freebsd.org  Tue Feb 21 02:10:03 2017
Return-Path: <owner-svn-src-stable-11@freebsd.org>
Delivered-To: svn-src-stable-11@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 88F3BCE766E;
 Tue, 21 Feb 2017 02:10:03 +0000 (UTC)
 (envelope-from sephe@FreeBSD.org)
Received: from repo.freebsd.org (repo.freebsd.org
 [IPv6:2610:1c1:1:6068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 57F9017D6;
 Tue, 21 Feb 2017 02:10:03 +0000 (UTC)
 (envelope-from sephe@FreeBSD.org)
Received: from repo.freebsd.org ([127.0.1.37])
 by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v1L2A2MY007589;
 Tue, 21 Feb 2017 02:10:02 GMT (envelope-from sephe@FreeBSD.org)
Received: (from sephe@localhost)
 by repo.freebsd.org (8.15.2/8.15.2/Submit) id v1L2A2RI007588;
 Tue, 21 Feb 2017 02:10:02 GMT (envelope-from sephe@FreeBSD.org)
Message-Id: <201702210210.v1L2A2RI007588@repo.freebsd.org>
X-Authentication-Warning: repo.freebsd.org: sephe set sender to
 sephe@FreeBSD.org using -f
From: Sepherosa Ziehau <sephe@FreeBSD.org>
Date: Tue, 21 Feb 2017 02:10:02 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org
Subject: svn commit: r314002 - stable/11/sys/net
X-SVN-Group: stable-11
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-stable-11@freebsd.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: SVN commit messages for only the 11-stable src tree
 <svn-src-stable-11.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-stable-11>, 
 <mailto:svn-src-stable-11-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-stable-11/>
List-Post: <mailto:svn-src-stable-11@freebsd.org>
List-Help: <mailto:svn-src-stable-11-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-stable-11>, 
 <mailto:svn-src-stable-11-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 21 Feb 2017 02:10:03 -0000

Author: sephe
Date: Tue Feb 21 02:10:02 2017
New Revision: 314002
URL: https://svnweb.freebsd.org/changeset/base/314002

Log:
  MFC 311475
  
      if: Defer the if_up until the ifnet.if_ioctl is called.
  
      This ensures the interface is initialized by the interface driver
      before it can be used by the rest of the system.
  
      Reviewed by:    jhb, karels, gnn
      Sponsored by:   Microsoft
      Differential Revision:  https://reviews.freebsd.org/D8905

Modified:
  stable/11/sys/net/if.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/net/if.c
==============================================================================
--- stable/11/sys/net/if.c	Tue Feb 21 01:11:18 2017	(r314001)
+++ stable/11/sys/net/if.c	Tue Feb 21 02:10:02 2017	(r314002)
@@ -2300,7 +2300,7 @@ static int
 ifhwioctl(u_long cmd, struct ifnet *ifp, caddr_t data, struct thread *td)
 {
 	struct ifreq *ifr;
-	int error = 0;
+	int error = 0, do_ifup = 0;
 	int new_flags, temp_flags;
 	size_t namelen, onamelen;
 	size_t descrlen;
@@ -2427,7 +2427,7 @@ ifhwioctl(u_long cmd, struct ifnet *ifp,
 			if_down(ifp);
 		} else if (new_flags & IFF_UP &&
 		    (ifp->if_flags & IFF_UP) == 0) {
-			if_up(ifp);
+			do_ifup = 1;
 		}
 		/* See if permanently promiscuous mode bit is about to flip */
 		if ((ifp->if_flags ^ new_flags) & IFF_PPROMISC) {
@@ -2446,6 +2446,8 @@ ifhwioctl(u_long cmd, struct ifnet *ifp,
 		if (ifp->if_ioctl) {
 			(void) (*ifp->if_ioctl)(ifp, cmd, data);
 		}
+		if (do_ifup)
+			if_up(ifp);
 		getmicrotime(&ifp->if_lastchange);
 		break;