From dd8ac41eca0b4a7adeda99d04e084105f38f7497 Mon Sep 17 00:00:00 2001
From: Brad Smith <brad@cvs.openbsd.org>
Date: Sun, 3 Jul 2005 07:47:24 +0000
Subject: fix MTU ioctl case

---
 sys/dev/pci/if_bce.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'sys/dev/pci/if_bce.c')

diff --git a/sys/dev/pci/if_bce.c b/sys/dev/pci/if_bce.c
index 5e8a28fb02e..168db2d9ef4 100644
--- a/sys/dev/pci/if_bce.c
+++ b/sys/dev/pci/if_bce.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: if_bce.c,v 1.7 2005/07/02 23:10:11 brad Exp $ */
+/* $OpenBSD: if_bce.c,v 1.8 2005/07/03 07:47:23 brad Exp $ */
 /* $NetBSD: if_bce.c,v 1.3 2003/09/29 01:53:02 mrg Exp $	 */
 
 /*
@@ -483,6 +483,7 @@ bce_ioctl(ifp, cmd, data)
 	switch (cmd) {
 	case SIOCSIFADDR:
 		ifp->if_flags |= IFF_UP;
+
 		switch (ifa->ifa_addr->sa_family) {
 #ifdef INET
 		case AF_INET:
@@ -496,7 +497,10 @@ bce_ioctl(ifp, cmd, data)
 		}
 		break;
 	case SIOCSIFMTU:
-		ifp->if_mtu = ifr->ifr_mtu;
+		if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU)
+			error = EINVAL;
+		else if (ifp->if_mtu != ifr->ifr_mtu)
+			ifp->if_mtu = ifr->ifr_mtu;
 		break;
 	case SIOCSIFFLAGS:
 		if(ifp->if_flags & IFF_UP)
-- 
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