From 1164db57e40de8efae073eba01ba85bb26ae5a8d Mon Sep 17 00:00:00 2001
From: Ruslan Ermilov <ru@FreeBSD.org>
Date: Sun, 7 Mar 2004 23:00:44 +0000
Subject: [PATCH] Implemented the "getifindex" control message.

PR:		kern/63864
Submitted by:	Gleb Smirnoff
---
 sys/netgraph/ng_iface.c | 16 ++++++++++++++++
 sys/netgraph/ng_iface.h |  1 +
 2 files changed, 17 insertions(+)

diff --git a/sys/netgraph/ng_iface.c b/sys/netgraph/ng_iface.c
index 430e0e650155..38845fc33298 100644
--- a/sys/netgraph/ng_iface.c
+++ b/sys/netgraph/ng_iface.c
@@ -186,6 +186,13 @@ static const struct ng_cmdlist ng_iface_cmds[] = {
 	  NULL,
 	  &ng_cisco_ipaddr_type
 	},
+	{
+	  NGM_IFACE_COOKIE,
+	  NGM_IFACE_GET_IFINDEX,
+	  "getifindex",
+	  NULL,
+	  &ng_parse_uint32_type
+	},
 	{ 0 }
 };
 
@@ -667,6 +674,15 @@ ng_iface_rcvmsg(node_p node, item_p item, hook_p lasthook)
 			break;
 		    }
 
+		case NGM_IFACE_GET_IFINDEX:
+			NG_MKRESPONSE(resp, msg, sizeof(uint32_t), M_NOWAIT);
+			if (resp == NULL) {
+				error = ENOMEM;
+				break;
+			}
+			*((uint32_t *)resp->data) = priv->ifp->if_index;
+			break;
+
 		default:
 			error = EINVAL;
 			break;
diff --git a/sys/netgraph/ng_iface.h b/sys/netgraph/ng_iface.h
index 98b9c7cdd48e..6c3bbbc56df0 100644
--- a/sys/netgraph/ng_iface.h
+++ b/sys/netgraph/ng_iface.h
@@ -69,6 +69,7 @@ enum {
 	NGM_IFACE_GET_IFNAME = 1,	/* returns struct ng_iface_ifname */
 	NGM_IFACE_POINT2POINT,
 	NGM_IFACE_BROADCAST,
+	NGM_IFACE_GET_IFINDEX,
 };
 
 struct ng_iface_ifname {