From c4307a79b8c7bec1db6427f2dde7459081cab8f9 Mon Sep 17 00:00:00 2001
From: glebius <glebius@FreeBSD.org>
Date: Tue, 23 Nov 2004 09:48:13 +0000
Subject: [PATCH] Netgraph flow control: change interface status when node
 receive LINK_IS_UP/LINK_IS_DOWN messages.

Approved by:	julian (mentor), implicitly
MFC after:	1 week
---
 sys/netgraph/ng_iface.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/sys/netgraph/ng_iface.c b/sys/netgraph/ng_iface.c
index 67ad539ec48f..e31e97bc346a 100644
--- a/sys/netgraph/ng_iface.c
+++ b/sys/netgraph/ng_iface.c
@@ -730,6 +730,18 @@ ng_iface_rcvmsg(node_p node, item_p item, hook_p lasthook)
 			break;
 		}
 		break;
+	case NGM_FLOW_COOKIE:
+		switch (msg->header.cmd) {
+		case NGM_LINK_IS_UP:
+			ifp->if_flags |= IFF_UP;
+			break;
+		case NGM_LINK_IS_DOWN:
+			ifp->if_flags &= ~IFF_UP;
+			break;
+		default:
+			break;
+		}
+		break;
 	default:
 		error = EINVAL;
 		break;