xref: /freebsd/sys/netgraph/ng_ether.c (revision a176c2aeafbb65a03497c0034da633563c287f06)
1e1e1452dSArchie Cobbs 
2e1e1452dSArchie Cobbs /*
3e1e1452dSArchie Cobbs  * ng_ether.c
4e1e1452dSArchie Cobbs  *
5e1e1452dSArchie Cobbs  * Copyright (c) 1996-2000 Whistle Communications, Inc.
6e1e1452dSArchie Cobbs  * All rights reserved.
7e1e1452dSArchie Cobbs  *
8e1e1452dSArchie Cobbs  * Subject to the following obligations and disclaimer of warranty, use and
9e1e1452dSArchie Cobbs  * redistribution of this software, in source or object code forms, with or
10e1e1452dSArchie Cobbs  * without modifications are expressly permitted by Whistle Communications;
11e1e1452dSArchie Cobbs  * provided, however, that:
12e1e1452dSArchie Cobbs  * 1. Any and all reproductions of the source or object code must include the
13e1e1452dSArchie Cobbs  *    copyright notice above and the following disclaimer of warranties; and
14e1e1452dSArchie Cobbs  * 2. No rights are granted, in any manner or form, to use Whistle
15e1e1452dSArchie Cobbs  *    Communications, Inc. trademarks, including the mark "WHISTLE
16e1e1452dSArchie Cobbs  *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
17e1e1452dSArchie Cobbs  *    such appears in the above copyright notice or in the software.
18e1e1452dSArchie Cobbs  *
19e1e1452dSArchie Cobbs  * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
20e1e1452dSArchie Cobbs  * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
21e1e1452dSArchie Cobbs  * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
22e1e1452dSArchie Cobbs  * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
23e1e1452dSArchie Cobbs  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
24e1e1452dSArchie Cobbs  * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
25e1e1452dSArchie Cobbs  * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
26e1e1452dSArchie Cobbs  * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
27e1e1452dSArchie Cobbs  * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
28e1e1452dSArchie Cobbs  * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
29e1e1452dSArchie Cobbs  * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
30e1e1452dSArchie Cobbs  * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
31e1e1452dSArchie Cobbs  * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
32e1e1452dSArchie Cobbs  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33e1e1452dSArchie Cobbs  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34e1e1452dSArchie Cobbs  * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35e1e1452dSArchie Cobbs  * OF SUCH DAMAGE.
36e1e1452dSArchie Cobbs  *
37e1e1452dSArchie Cobbs  * Authors: Archie Cobbs <archie@freebsd.org>
38e1e1452dSArchie Cobbs  *	    Julian Elischer <julian@freebsd.org>
39e1e1452dSArchie Cobbs  *
40e1e1452dSArchie Cobbs  * $FreeBSD$
41e1e1452dSArchie Cobbs  */
42e1e1452dSArchie Cobbs 
43e1e1452dSArchie Cobbs /*
44e1e1452dSArchie Cobbs  * ng_ether(4) netgraph node type
45e1e1452dSArchie Cobbs  */
46e1e1452dSArchie Cobbs 
47e1e1452dSArchie Cobbs #include <sys/param.h>
48e1e1452dSArchie Cobbs #include <sys/systm.h>
49e1e1452dSArchie Cobbs #include <sys/kernel.h>
50e1e1452dSArchie Cobbs #include <sys/malloc.h>
51e1e1452dSArchie Cobbs #include <sys/mbuf.h>
52e1e1452dSArchie Cobbs #include <sys/errno.h>
53e1e1452dSArchie Cobbs #include <sys/syslog.h>
54e1e1452dSArchie Cobbs #include <sys/socket.h>
55e1e1452dSArchie Cobbs 
56a176c2aeSGleb Smirnoff #include <net/bridge.h>
57e1e1452dSArchie Cobbs #include <net/if.h>
58e1e1452dSArchie Cobbs #include <net/if_types.h>
59e1e1452dSArchie Cobbs #include <net/if_arp.h>
60e1e1452dSArchie Cobbs #include <net/if_var.h>
61e1e1452dSArchie Cobbs #include <net/ethernet.h>
62e1e1452dSArchie Cobbs 
63e1e1452dSArchie Cobbs #include <netgraph/ng_message.h>
64e1e1452dSArchie Cobbs #include <netgraph/netgraph.h>
65e1e1452dSArchie Cobbs #include <netgraph/ng_parse.h>
66e1e1452dSArchie Cobbs #include <netgraph/ng_ether.h>
67e1e1452dSArchie Cobbs 
68e1e1452dSArchie Cobbs #define IFP2NG(ifp)  ((struct ng_node *)((struct arpcom *)(ifp))->ac_netgraph)
69445e045bSAlexander Kabaev #define IFP2NG_SET(ifp, val)	(((struct arpcom *)(ifp))->ac_netgraph = (val))
70e1e1452dSArchie Cobbs 
713c976c3fSPawel Jakub Dawidek /* Per-node private data */
723c976c3fSPawel Jakub Dawidek struct private {
733c976c3fSPawel Jakub Dawidek 	struct ifnet	*ifp;		/* associated interface */
743c976c3fSPawel Jakub Dawidek 	hook_p		upper;		/* upper hook connection */
751a292b80SArchie Cobbs 	hook_p		lower;		/* lower hook connection */
761a292b80SArchie Cobbs 	hook_p		orphan;		/* orphan hook connection */
773c976c3fSPawel Jakub Dawidek 	u_char		autoSrcAddr;	/* always overwrite source address */
783c976c3fSPawel Jakub Dawidek 	u_char		promisc;	/* promiscuous mode enabled */
793c976c3fSPawel Jakub Dawidek 	u_long		hwassist;	/* hardware checksum capabilities */
803c976c3fSPawel Jakub Dawidek 	u_int		flags;		/* flags e.g. really die */
813c976c3fSPawel Jakub Dawidek };
823c976c3fSPawel Jakub Dawidek typedef struct private *priv_p;
83e1e1452dSArchie Cobbs 
84edbb5246SSam Leffler /* Hook pointers used by if_ethersubr.c to callback to netgraph */
85edbb5246SSam Leffler extern	void	(*ng_ether_input_p)(struct ifnet *ifp, struct mbuf **mp);
86edbb5246SSam Leffler extern	void	(*ng_ether_input_orphan_p)(struct ifnet *ifp, struct mbuf *m);
87edbb5246SSam Leffler extern	int	(*ng_ether_output_p)(struct ifnet *ifp, struct mbuf **mp);
88edbb5246SSam Leffler extern	void	(*ng_ether_attach_p)(struct ifnet *ifp);
89edbb5246SSam Leffler extern	void	(*ng_ether_detach_p)(struct ifnet *ifp);
90edbb5246SSam Leffler 
91e1e1452dSArchie Cobbs /* Functional hooks called from if_ethersubr.c */
92edbb5246SSam Leffler static void	ng_ether_input(struct ifnet *ifp, struct mbuf **mp);
93edbb5246SSam Leffler static void	ng_ether_input_orphan(struct ifnet *ifp, struct mbuf *m);
94e1e1452dSArchie Cobbs static int	ng_ether_output(struct ifnet *ifp, struct mbuf **mp);
95e1e1452dSArchie Cobbs static void	ng_ether_attach(struct ifnet *ifp);
96e1e1452dSArchie Cobbs static void	ng_ether_detach(struct ifnet *ifp);
97e1e1452dSArchie Cobbs 
98e1e1452dSArchie Cobbs /* Other functions */
993ca24c28SJulian Elischer static int	ng_ether_rcv_lower(node_p node, struct mbuf *m);
1003ca24c28SJulian Elischer static int	ng_ether_rcv_upper(node_p node, struct mbuf *m);
101e1e1452dSArchie Cobbs 
102e1e1452dSArchie Cobbs /* Netgraph node methods */
103e1e1452dSArchie Cobbs static ng_constructor_t	ng_ether_constructor;
104e1e1452dSArchie Cobbs static ng_rcvmsg_t	ng_ether_rcvmsg;
105069154d5SJulian Elischer static ng_shutdown_t	ng_ether_shutdown;
106e1e1452dSArchie Cobbs static ng_newhook_t	ng_ether_newhook;
107859a4d16SJulian Elischer static ng_connect_t	ng_ether_connect;
108e1e1452dSArchie Cobbs static ng_rcvdata_t	ng_ether_rcvdata;
109e1e1452dSArchie Cobbs static ng_disconnect_t	ng_ether_disconnect;
110e1e1452dSArchie Cobbs static int		ng_ether_mod_event(module_t mod, int event, void *data);
111e1e1452dSArchie Cobbs 
112e1e1452dSArchie Cobbs /* List of commands and how to convert arguments to/from ASCII */
113e1e1452dSArchie Cobbs static const struct ng_cmdlist ng_ether_cmdlist[] = {
114e1e1452dSArchie Cobbs 	{
115e1e1452dSArchie Cobbs 	  NGM_ETHER_COOKIE,
116e1e1452dSArchie Cobbs 	  NGM_ETHER_GET_IFNAME,
117e1e1452dSArchie Cobbs 	  "getifname",
118e1e1452dSArchie Cobbs 	  NULL,
119e1e1452dSArchie Cobbs 	  &ng_parse_string_type
120e1e1452dSArchie Cobbs 	},
121e1e1452dSArchie Cobbs 	{
122e1e1452dSArchie Cobbs 	  NGM_ETHER_COOKIE,
123e1e1452dSArchie Cobbs 	  NGM_ETHER_GET_IFINDEX,
124e1e1452dSArchie Cobbs 	  "getifindex",
125e1e1452dSArchie Cobbs 	  NULL,
126e1e1452dSArchie Cobbs 	  &ng_parse_int32_type
127e1e1452dSArchie Cobbs 	},
1284b39c3c7SArchie Cobbs 	{
1294b39c3c7SArchie Cobbs 	  NGM_ETHER_COOKIE,
1304b39c3c7SArchie Cobbs 	  NGM_ETHER_GET_ENADDR,
1314b39c3c7SArchie Cobbs 	  "getenaddr",
1324b39c3c7SArchie Cobbs 	  NULL,
1338c7e4101SRuslan Ermilov 	  &ng_parse_enaddr_type
1344b39c3c7SArchie Cobbs 	},
1354b39c3c7SArchie Cobbs 	{
1364b39c3c7SArchie Cobbs 	  NGM_ETHER_COOKIE,
13756045c66SArchie Cobbs 	  NGM_ETHER_SET_ENADDR,
13856045c66SArchie Cobbs 	  "setenaddr",
1398c7e4101SRuslan Ermilov 	  &ng_parse_enaddr_type,
14056045c66SArchie Cobbs 	  NULL
14156045c66SArchie Cobbs 	},
14256045c66SArchie Cobbs 	{
14356045c66SArchie Cobbs 	  NGM_ETHER_COOKIE,
14456045c66SArchie Cobbs 	  NGM_ETHER_GET_PROMISC,
14556045c66SArchie Cobbs 	  "getpromisc",
14656045c66SArchie Cobbs 	  NULL,
14756045c66SArchie Cobbs 	  &ng_parse_int32_type
14856045c66SArchie Cobbs 	},
14956045c66SArchie Cobbs 	{
15056045c66SArchie Cobbs 	  NGM_ETHER_COOKIE,
1514b39c3c7SArchie Cobbs 	  NGM_ETHER_SET_PROMISC,
1524b39c3c7SArchie Cobbs 	  "setpromisc",
1534b39c3c7SArchie Cobbs 	  &ng_parse_int32_type,
1544b39c3c7SArchie Cobbs 	  NULL
1554b39c3c7SArchie Cobbs 	},
1564b39c3c7SArchie Cobbs 	{
1574b39c3c7SArchie Cobbs 	  NGM_ETHER_COOKIE,
15856045c66SArchie Cobbs 	  NGM_ETHER_GET_AUTOSRC,
15956045c66SArchie Cobbs 	  "getautosrc",
16056045c66SArchie Cobbs 	  NULL,
16156045c66SArchie Cobbs 	  &ng_parse_int32_type
16256045c66SArchie Cobbs 	},
16356045c66SArchie Cobbs 	{
16456045c66SArchie Cobbs 	  NGM_ETHER_COOKIE,
1654b39c3c7SArchie Cobbs 	  NGM_ETHER_SET_AUTOSRC,
1664b39c3c7SArchie Cobbs 	  "setautosrc",
1674b39c3c7SArchie Cobbs 	  &ng_parse_int32_type,
1684b39c3c7SArchie Cobbs 	  NULL
1694b39c3c7SArchie Cobbs 	},
170e1e1452dSArchie Cobbs 	{ 0 }
171e1e1452dSArchie Cobbs };
172e1e1452dSArchie Cobbs 
173e1e1452dSArchie Cobbs static struct ng_type ng_ether_typestruct = {
174f8aae777SJulian Elischer 	.version =	NG_ABI_VERSION,
175f8aae777SJulian Elischer 	.name =		NG_ETHER_NODE_TYPE,
176f8aae777SJulian Elischer 	.mod_event =	ng_ether_mod_event,
177f8aae777SJulian Elischer 	.constructor =	ng_ether_constructor,
178f8aae777SJulian Elischer 	.rcvmsg =	ng_ether_rcvmsg,
179f8aae777SJulian Elischer 	.shutdown =	ng_ether_shutdown,
180f8aae777SJulian Elischer 	.newhook =	ng_ether_newhook,
181f8aae777SJulian Elischer 	.connect =	ng_ether_connect,
182f8aae777SJulian Elischer 	.rcvdata =	ng_ether_rcvdata,
183f8aae777SJulian Elischer 	.disconnect =	ng_ether_disconnect,
184f8aae777SJulian Elischer 	.cmdlist =	ng_ether_cmdlist,
185e1e1452dSArchie Cobbs };
1866b795970SJulian Elischer MODULE_VERSION(ng_ether, 1);
187e1e1452dSArchie Cobbs NETGRAPH_INIT(ether, &ng_ether_typestruct);
188e1e1452dSArchie Cobbs 
189e1e1452dSArchie Cobbs /******************************************************************
190e1e1452dSArchie Cobbs 		    ETHERNET FUNCTION HOOKS
191e1e1452dSArchie Cobbs ******************************************************************/
192e1e1452dSArchie Cobbs 
193e1e1452dSArchie Cobbs /*
194e1e1452dSArchie Cobbs  * Handle a packet that has come in on an interface. We get to
195e1e1452dSArchie Cobbs  * look at it here before any upper layer protocols do.
196e1e1452dSArchie Cobbs  *
197e1e1452dSArchie Cobbs  * NOTE: this function will get called at splimp()
198e1e1452dSArchie Cobbs  */
199e1e1452dSArchie Cobbs static void
200edbb5246SSam Leffler ng_ether_input(struct ifnet *ifp, struct mbuf **mp)
201e1e1452dSArchie Cobbs {
202e1e1452dSArchie Cobbs 	const node_p node = IFP2NG(ifp);
20330400f03SJulian Elischer 	const priv_p priv = NG_NODE_PRIVATE(node);
2041a292b80SArchie Cobbs 	int error;
205e1e1452dSArchie Cobbs 
206e1e1452dSArchie Cobbs 	/* If "lower" hook not connected, let packet continue */
2071a292b80SArchie Cobbs 	if (priv->lower == NULL)
208e1e1452dSArchie Cobbs 		return;
2091a292b80SArchie Cobbs 	NG_SEND_DATA_ONLY(error, priv->lower, *mp);	/* sets *mp = NULL */
210e1e1452dSArchie Cobbs }
211e1e1452dSArchie Cobbs 
212e1e1452dSArchie Cobbs /*
213e1e1452dSArchie Cobbs  * Handle a packet that has come in on an interface, and which
214e1e1452dSArchie Cobbs  * does not match any of our known protocols (an ``orphan'').
215e1e1452dSArchie Cobbs  *
216e1e1452dSArchie Cobbs  * NOTE: this function will get called at splimp()
217e1e1452dSArchie Cobbs  */
218e1e1452dSArchie Cobbs static void
219edbb5246SSam Leffler ng_ether_input_orphan(struct ifnet *ifp, struct mbuf *m)
220e1e1452dSArchie Cobbs {
221e1e1452dSArchie Cobbs 	const node_p node = IFP2NG(ifp);
22230400f03SJulian Elischer 	const priv_p priv = NG_NODE_PRIVATE(node);
2231a292b80SArchie Cobbs 	int error;
224e1e1452dSArchie Cobbs 
2251a292b80SArchie Cobbs 	/* If "orphan" hook not connected, discard packet */
2261a292b80SArchie Cobbs 	if (priv->orphan == NULL) {
227e1e1452dSArchie Cobbs 		m_freem(m);
228e1e1452dSArchie Cobbs 		return;
229e1e1452dSArchie Cobbs 	}
2301a292b80SArchie Cobbs 	NG_SEND_DATA_ONLY(error, priv->orphan, m);
231e1e1452dSArchie Cobbs }
232e1e1452dSArchie Cobbs 
233e1e1452dSArchie Cobbs /*
234e1e1452dSArchie Cobbs  * Handle a packet that is going out on an interface.
235e1e1452dSArchie Cobbs  * The Ethernet header is already attached to the mbuf.
236e1e1452dSArchie Cobbs  */
237e1e1452dSArchie Cobbs static int
238e1e1452dSArchie Cobbs ng_ether_output(struct ifnet *ifp, struct mbuf **mp)
239e1e1452dSArchie Cobbs {
240e1e1452dSArchie Cobbs 	const node_p node = IFP2NG(ifp);
24130400f03SJulian Elischer 	const priv_p priv = NG_NODE_PRIVATE(node);
242e1e1452dSArchie Cobbs 	int error = 0;
243e1e1452dSArchie Cobbs 
244e1e1452dSArchie Cobbs 	/* If "upper" hook not connected, let packet continue */
245e1e1452dSArchie Cobbs 	if (priv->upper == NULL)
246e1e1452dSArchie Cobbs 		return (0);
247e1e1452dSArchie Cobbs 
248e1e1452dSArchie Cobbs 	/* Send it out "upper" hook */
249069154d5SJulian Elischer 	NG_SEND_DATA_ONLY(error, priv->upper, *mp);
250e1e1452dSArchie Cobbs 	return (error);
251e1e1452dSArchie Cobbs }
252e1e1452dSArchie Cobbs 
253e1e1452dSArchie Cobbs /*
254e1e1452dSArchie Cobbs  * A new Ethernet interface has been attached.
255e1e1452dSArchie Cobbs  * Create a new node for it, etc.
256e1e1452dSArchie Cobbs  */
257e1e1452dSArchie Cobbs static void
258e1e1452dSArchie Cobbs ng_ether_attach(struct ifnet *ifp)
259e1e1452dSArchie Cobbs {
260e1e1452dSArchie Cobbs 	priv_p priv;
261e1e1452dSArchie Cobbs 	node_p node;
262e1e1452dSArchie Cobbs 
263e1e1452dSArchie Cobbs 	/* Create node */
2646e551fb6SDavid E. O'Brien 	KASSERT(!IFP2NG(ifp), ("%s: node already exists?", __func__));
265e1e1452dSArchie Cobbs 	if (ng_make_node_common(&ng_ether_typestruct, &node) != 0) {
266e1e1452dSArchie Cobbs 		log(LOG_ERR, "%s: can't %s for %s\n",
2679bf40edeSBrooks Davis 		    __func__, "create node", ifp->if_xname);
268e1e1452dSArchie Cobbs 		return;
269e1e1452dSArchie Cobbs 	}
270e1e1452dSArchie Cobbs 
271e1e1452dSArchie Cobbs 	/* Allocate private data */
27299cdf4ccSDavid Malone 	MALLOC(priv, priv_p, sizeof(*priv), M_NETGRAPH, M_NOWAIT | M_ZERO);
273e1e1452dSArchie Cobbs 	if (priv == NULL) {
274e1e1452dSArchie Cobbs 		log(LOG_ERR, "%s: can't %s for %s\n",
2759bf40edeSBrooks Davis 		    __func__, "allocate memory", ifp->if_xname);
27630400f03SJulian Elischer 		NG_NODE_UNREF(node);
277e1e1452dSArchie Cobbs 		return;
278e1e1452dSArchie Cobbs 	}
27930400f03SJulian Elischer 	NG_NODE_SET_PRIVATE(node, priv);
280e1e1452dSArchie Cobbs 	priv->ifp = ifp;
281445e045bSAlexander Kabaev 	IFP2NG_SET(ifp, node);
2824b39c3c7SArchie Cobbs 	priv->autoSrcAddr = 1;
283a3e232d6SArchie Cobbs 	priv->hwassist = ifp->if_hwassist;
284e1e1452dSArchie Cobbs 
285e1e1452dSArchie Cobbs 	/* Try to give the node the same name as the interface */
2869bf40edeSBrooks Davis 	if (ng_name_node(node, ifp->if_xname) != 0) {
287e1e1452dSArchie Cobbs 		log(LOG_WARNING, "%s: can't name node %s\n",
2889bf40edeSBrooks Davis 		    __func__, ifp->if_xname);
289e1e1452dSArchie Cobbs 	}
290e1e1452dSArchie Cobbs }
291e1e1452dSArchie Cobbs 
292e1e1452dSArchie Cobbs /*
293e1e1452dSArchie Cobbs  * An Ethernet interface is being detached.
2941acb27c6SJulian Elischer  * REALLY Destroy its node.
295e1e1452dSArchie Cobbs  */
296e1e1452dSArchie Cobbs static void
297e1e1452dSArchie Cobbs ng_ether_detach(struct ifnet *ifp)
298e1e1452dSArchie Cobbs {
299e1e1452dSArchie Cobbs 	const node_p node = IFP2NG(ifp);
3001acb27c6SJulian Elischer 	const priv_p priv = NG_NODE_PRIVATE(node);
301e1e1452dSArchie Cobbs 
302e1e1452dSArchie Cobbs 	if (node == NULL)		/* no node (why not?), ignore */
303e1e1452dSArchie Cobbs 		return;
3041acb27c6SJulian Elischer 	NG_NODE_REALLY_DIE(node);	/* Force real removal of node */
3051acb27c6SJulian Elischer 	/*
3061acb27c6SJulian Elischer 	 * We can't assume the ifnet is still around when we run shutdown
3071acb27c6SJulian Elischer 	 * So zap it now. XXX We HOPE that anything running at this time
3081acb27c6SJulian Elischer 	 * handles it (as it should in the non netgraph case).
3091acb27c6SJulian Elischer 	 */
310445e045bSAlexander Kabaev 	IFP2NG_SET(ifp, NULL);
3111acb27c6SJulian Elischer 	priv->ifp = NULL;	/* XXX race if interrupted an output packet */
3121acb27c6SJulian Elischer 	ng_rmnode_self(node);		/* remove all netgraph parts */
313e1e1452dSArchie Cobbs }
314e1e1452dSArchie Cobbs 
315e1e1452dSArchie Cobbs /******************************************************************
316e1e1452dSArchie Cobbs 		    NETGRAPH NODE METHODS
317e1e1452dSArchie Cobbs ******************************************************************/
318e1e1452dSArchie Cobbs 
319e1e1452dSArchie Cobbs /*
320e1e1452dSArchie Cobbs  * It is not possible or allowable to create a node of this type.
321e1e1452dSArchie Cobbs  * Nodes get created when the interface is attached (or, when
322e1e1452dSArchie Cobbs  * this node type's KLD is loaded).
323e1e1452dSArchie Cobbs  */
324e1e1452dSArchie Cobbs static int
325069154d5SJulian Elischer ng_ether_constructor(node_p node)
326e1e1452dSArchie Cobbs {
327e1e1452dSArchie Cobbs 	return (EINVAL);
328e1e1452dSArchie Cobbs }
329e1e1452dSArchie Cobbs 
330e1e1452dSArchie Cobbs /*
331e1e1452dSArchie Cobbs  * Check for attaching a new hook.
332e1e1452dSArchie Cobbs  */
333e1e1452dSArchie Cobbs static	int
334e1e1452dSArchie Cobbs ng_ether_newhook(node_p node, hook_p hook, const char *name)
335e1e1452dSArchie Cobbs {
33630400f03SJulian Elischer 	const priv_p priv = NG_NODE_PRIVATE(node);
337e1e1452dSArchie Cobbs 	hook_p *hookptr;
338e1e1452dSArchie Cobbs 
339e1e1452dSArchie Cobbs 	/* Divert hook is an alias for lower */
340e1e1452dSArchie Cobbs 	if (strcmp(name, NG_ETHER_HOOK_DIVERT) == 0)
341e1e1452dSArchie Cobbs 		name = NG_ETHER_HOOK_LOWER;
342e1e1452dSArchie Cobbs 
343e1e1452dSArchie Cobbs 	/* Which hook? */
344e1e1452dSArchie Cobbs 	if (strcmp(name, NG_ETHER_HOOK_UPPER) == 0)
345e1e1452dSArchie Cobbs 		hookptr = &priv->upper;
3461a292b80SArchie Cobbs 	else if (strcmp(name, NG_ETHER_HOOK_LOWER) == 0)
347e1e1452dSArchie Cobbs 		hookptr = &priv->lower;
3481a292b80SArchie Cobbs 	else if (strcmp(name, NG_ETHER_HOOK_ORPHAN) == 0)
3491a292b80SArchie Cobbs 		hookptr = &priv->orphan;
3501a292b80SArchie Cobbs 	else
351e1e1452dSArchie Cobbs 		return (EINVAL);
352e1e1452dSArchie Cobbs 
353e1e1452dSArchie Cobbs 	/* Check if already connected (shouldn't be, but doesn't hurt) */
354e1e1452dSArchie Cobbs 	if (*hookptr != NULL)
355e1e1452dSArchie Cobbs 		return (EISCONN);
356e1e1452dSArchie Cobbs 
357a3e232d6SArchie Cobbs 	/* Disable hardware checksums while 'upper' hook is connected */
358a3e232d6SArchie Cobbs 	if (hookptr == &priv->upper)
359a3e232d6SArchie Cobbs 		priv->ifp->if_hwassist = 0;
360a3e232d6SArchie Cobbs 
361e1e1452dSArchie Cobbs 	/* OK */
362e1e1452dSArchie Cobbs 	*hookptr = hook;
363e1e1452dSArchie Cobbs 	return (0);
364e1e1452dSArchie Cobbs }
365e1e1452dSArchie Cobbs 
366e1e1452dSArchie Cobbs /*
367859a4d16SJulian Elischer  * Hooks are attached, adjust to force queueing.
368859a4d16SJulian Elischer  * We don't really care which hook it is.
369859a4d16SJulian Elischer  * they should all be queuing for outgoing data.
370859a4d16SJulian Elischer  */
371859a4d16SJulian Elischer static	int
372859a4d16SJulian Elischer ng_ether_connect(hook_p hook)
373859a4d16SJulian Elischer {
37430400f03SJulian Elischer 	NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook));
375859a4d16SJulian Elischer 	return (0);
376859a4d16SJulian Elischer }
377859a4d16SJulian Elischer 
378859a4d16SJulian Elischer /*
379e1e1452dSArchie Cobbs  * Receive an incoming control message.
380e1e1452dSArchie Cobbs  */
381e1e1452dSArchie Cobbs static int
382069154d5SJulian Elischer ng_ether_rcvmsg(node_p node, item_p item, hook_p lasthook)
383e1e1452dSArchie Cobbs {
38430400f03SJulian Elischer 	const priv_p priv = NG_NODE_PRIVATE(node);
385e1e1452dSArchie Cobbs 	struct ng_mesg *resp = NULL;
386e1e1452dSArchie Cobbs 	int error = 0;
387069154d5SJulian Elischer 	struct ng_mesg *msg;
388e1e1452dSArchie Cobbs 
389069154d5SJulian Elischer 	NGI_GET_MSG(item, msg);
390e1e1452dSArchie Cobbs 	switch (msg->header.typecookie) {
391e1e1452dSArchie Cobbs 	case NGM_ETHER_COOKIE:
392e1e1452dSArchie Cobbs 		switch (msg->header.cmd) {
393e1e1452dSArchie Cobbs 		case NGM_ETHER_GET_IFNAME:
394e1e1452dSArchie Cobbs 			NG_MKRESPONSE(resp, msg, IFNAMSIZ + 1, M_NOWAIT);
395e1e1452dSArchie Cobbs 			if (resp == NULL) {
396e1e1452dSArchie Cobbs 				error = ENOMEM;
397e1e1452dSArchie Cobbs 				break;
398e1e1452dSArchie Cobbs 			}
3999bf40edeSBrooks Davis 			strlcpy(resp->data, priv->ifp->if_xname, IFNAMSIZ + 1);
400e1e1452dSArchie Cobbs 			break;
401e1e1452dSArchie Cobbs 		case NGM_ETHER_GET_IFINDEX:
402e1e1452dSArchie Cobbs 			NG_MKRESPONSE(resp, msg, sizeof(u_int32_t), M_NOWAIT);
403e1e1452dSArchie Cobbs 			if (resp == NULL) {
404e1e1452dSArchie Cobbs 				error = ENOMEM;
405e1e1452dSArchie Cobbs 				break;
406e1e1452dSArchie Cobbs 			}
407e1e1452dSArchie Cobbs 			*((u_int32_t *)resp->data) = priv->ifp->if_index;
408e1e1452dSArchie Cobbs 			break;
4094b39c3c7SArchie Cobbs 		case NGM_ETHER_GET_ENADDR:
4104b39c3c7SArchie Cobbs 			NG_MKRESPONSE(resp, msg, ETHER_ADDR_LEN, M_NOWAIT);
4114b39c3c7SArchie Cobbs 			if (resp == NULL) {
4124b39c3c7SArchie Cobbs 				error = ENOMEM;
4134b39c3c7SArchie Cobbs 				break;
4144b39c3c7SArchie Cobbs 			}
4154b39c3c7SArchie Cobbs 			bcopy((IFP2AC(priv->ifp))->ac_enaddr,
4164b39c3c7SArchie Cobbs 			    resp->data, ETHER_ADDR_LEN);
4174b39c3c7SArchie Cobbs 			break;
41856045c66SArchie Cobbs 		case NGM_ETHER_SET_ENADDR:
41956045c66SArchie Cobbs 		    {
42056045c66SArchie Cobbs 			if (msg->header.arglen != ETHER_ADDR_LEN) {
42156045c66SArchie Cobbs 				error = EINVAL;
42256045c66SArchie Cobbs 				break;
42356045c66SArchie Cobbs 			}
42456045c66SArchie Cobbs 			error = if_setlladdr(priv->ifp,
42556045c66SArchie Cobbs 			    (u_char *)msg->data, ETHER_ADDR_LEN);
42656045c66SArchie Cobbs 			break;
42756045c66SArchie Cobbs 		    }
42856045c66SArchie Cobbs 		case NGM_ETHER_GET_PROMISC:
42956045c66SArchie Cobbs 			NG_MKRESPONSE(resp, msg, sizeof(u_int32_t), M_NOWAIT);
43056045c66SArchie Cobbs 			if (resp == NULL) {
43156045c66SArchie Cobbs 				error = ENOMEM;
43256045c66SArchie Cobbs 				break;
43356045c66SArchie Cobbs 			}
43456045c66SArchie Cobbs 			*((u_int32_t *)resp->data) = priv->promisc;
43556045c66SArchie Cobbs 			break;
4364b39c3c7SArchie Cobbs 		case NGM_ETHER_SET_PROMISC:
4374b39c3c7SArchie Cobbs 		    {
4384b39c3c7SArchie Cobbs 			u_char want;
4394b39c3c7SArchie Cobbs 
4404b39c3c7SArchie Cobbs 			if (msg->header.arglen != sizeof(u_int32_t)) {
4414b39c3c7SArchie Cobbs 				error = EINVAL;
4424b39c3c7SArchie Cobbs 				break;
4434b39c3c7SArchie Cobbs 			}
4444b39c3c7SArchie Cobbs 			want = !!*((u_int32_t *)msg->data);
4454b39c3c7SArchie Cobbs 			if (want ^ priv->promisc) {
4464b39c3c7SArchie Cobbs 				if ((error = ifpromisc(priv->ifp, want)) != 0)
4474b39c3c7SArchie Cobbs 					break;
4484b39c3c7SArchie Cobbs 				priv->promisc = want;
4494b39c3c7SArchie Cobbs 			}
4504b39c3c7SArchie Cobbs 			break;
4514b39c3c7SArchie Cobbs 		    }
45256045c66SArchie Cobbs 		case NGM_ETHER_GET_AUTOSRC:
45356045c66SArchie Cobbs 			NG_MKRESPONSE(resp, msg, sizeof(u_int32_t), M_NOWAIT);
45456045c66SArchie Cobbs 			if (resp == NULL) {
45556045c66SArchie Cobbs 				error = ENOMEM;
45656045c66SArchie Cobbs 				break;
45756045c66SArchie Cobbs 			}
45856045c66SArchie Cobbs 			*((u_int32_t *)resp->data) = priv->autoSrcAddr;
45956045c66SArchie Cobbs 			break;
4604b39c3c7SArchie Cobbs 		case NGM_ETHER_SET_AUTOSRC:
4614b39c3c7SArchie Cobbs 			if (msg->header.arglen != sizeof(u_int32_t)) {
4624b39c3c7SArchie Cobbs 				error = EINVAL;
4634b39c3c7SArchie Cobbs 				break;
4644b39c3c7SArchie Cobbs 			}
4654b39c3c7SArchie Cobbs 			priv->autoSrcAddr = !!*((u_int32_t *)msg->data);
4664b39c3c7SArchie Cobbs 			break;
467e1e1452dSArchie Cobbs 		default:
468e1e1452dSArchie Cobbs 			error = EINVAL;
469e1e1452dSArchie Cobbs 			break;
470e1e1452dSArchie Cobbs 		}
471e1e1452dSArchie Cobbs 		break;
472e1e1452dSArchie Cobbs 	default:
473e1e1452dSArchie Cobbs 		error = EINVAL;
474e1e1452dSArchie Cobbs 		break;
475e1e1452dSArchie Cobbs 	}
476069154d5SJulian Elischer 	NG_RESPOND_MSG(error, node, item, resp);
477069154d5SJulian Elischer 	NG_FREE_MSG(msg);
478e1e1452dSArchie Cobbs 	return (error);
479e1e1452dSArchie Cobbs }
480e1e1452dSArchie Cobbs 
481e1e1452dSArchie Cobbs /*
482e1e1452dSArchie Cobbs  * Receive data on a hook.
483e1e1452dSArchie Cobbs  */
484e1e1452dSArchie Cobbs static int
485069154d5SJulian Elischer ng_ether_rcvdata(hook_p hook, item_p item)
486e1e1452dSArchie Cobbs {
48730400f03SJulian Elischer 	const node_p node = NG_HOOK_NODE(hook);
48830400f03SJulian Elischer 	const priv_p priv = NG_NODE_PRIVATE(node);
489069154d5SJulian Elischer 	struct mbuf *m;
490e1e1452dSArchie Cobbs 
491069154d5SJulian Elischer 	NGI_GET_M(item, m);
492069154d5SJulian Elischer 	NG_FREE_ITEM(item);
4933ca24c28SJulian Elischer 
4941a292b80SArchie Cobbs 	if (hook == priv->lower || hook == priv->orphan)
4953ca24c28SJulian Elischer 		return ng_ether_rcv_lower(node, m);
496e1e1452dSArchie Cobbs 	if (hook == priv->upper)
4973ca24c28SJulian Elischer 		return ng_ether_rcv_upper(node, m);
4986e551fb6SDavid E. O'Brien 	panic("%s: weird hook", __func__);
4991a292b80SArchie Cobbs #ifdef RESTARTABLE_PANICS /* so we don't get an error msg in LINT */
5007ea5573cSDag-Erling Smørgrav 	return (0);
501b40ce416SJulian Elischer #endif
502e1e1452dSArchie Cobbs }
503e1e1452dSArchie Cobbs 
504e1e1452dSArchie Cobbs /*
5051a292b80SArchie Cobbs  * Handle an mbuf received on the "lower" or "orphan" hook.
506e1e1452dSArchie Cobbs  */
507e1e1452dSArchie Cobbs static int
5083ca24c28SJulian Elischer ng_ether_rcv_lower(node_p node, struct mbuf *m)
509e1e1452dSArchie Cobbs {
51030400f03SJulian Elischer 	const priv_p priv = NG_NODE_PRIVATE(node);
511a1479aa2SArchie Cobbs  	struct ifnet *const ifp = priv->ifp;
512a1479aa2SArchie Cobbs 
513a1479aa2SArchie Cobbs 	/* Check whether interface is ready for packets */
514a1479aa2SArchie Cobbs 	if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) {
515a1479aa2SArchie Cobbs 		NG_FREE_M(m);
516a1479aa2SArchie Cobbs 		return (ENETDOWN);
517a1479aa2SArchie Cobbs 	}
518e1e1452dSArchie Cobbs 
519e1e1452dSArchie Cobbs 	/* Make sure header is fully pulled up */
520e1e1452dSArchie Cobbs 	if (m->m_pkthdr.len < sizeof(struct ether_header)) {
521069154d5SJulian Elischer 		NG_FREE_M(m);
522e1e1452dSArchie Cobbs 		return (EINVAL);
523e1e1452dSArchie Cobbs 	}
524e1e1452dSArchie Cobbs 	if (m->m_len < sizeof(struct ether_header)
5257b9f235fSArchie Cobbs 	    && (m = m_pullup(m, sizeof(struct ether_header))) == NULL)
526e1e1452dSArchie Cobbs 		return (ENOBUFS);
527e1e1452dSArchie Cobbs 
5284b39c3c7SArchie Cobbs 	/* Drop in the MAC address if desired */
5294b39c3c7SArchie Cobbs 	if (priv->autoSrcAddr) {
5307b9f235fSArchie Cobbs 
5317b9f235fSArchie Cobbs 		/* Make the mbuf writable if it's not already */
5327b9f235fSArchie Cobbs 		if (!M_WRITABLE(m)
5337b9f235fSArchie Cobbs 		    && (m = m_pullup(m, sizeof(struct ether_header))) == NULL)
5347b9f235fSArchie Cobbs 			return (ENOBUFS);
5357b9f235fSArchie Cobbs 
5367b9f235fSArchie Cobbs 		/* Overwrite source MAC address */
537a1479aa2SArchie Cobbs 		bcopy((IFP2AC(ifp))->ac_enaddr,
5384b39c3c7SArchie Cobbs 		    mtod(m, struct ether_header *)->ether_shost,
5394b39c3c7SArchie Cobbs 		    ETHER_ADDR_LEN);
5404b39c3c7SArchie Cobbs 	}
541561e4fb9SJulian Elischer 
542e1e1452dSArchie Cobbs 	/* Send it on its way */
543a1479aa2SArchie Cobbs 	return ether_output_frame(ifp, m);
544e1e1452dSArchie Cobbs }
545e1e1452dSArchie Cobbs 
546e1e1452dSArchie Cobbs /*
547e1e1452dSArchie Cobbs  * Handle an mbuf received on the "upper" hook.
548e1e1452dSArchie Cobbs  */
549e1e1452dSArchie Cobbs static int
5503ca24c28SJulian Elischer ng_ether_rcv_upper(node_p node, struct mbuf *m)
551e1e1452dSArchie Cobbs {
55230400f03SJulian Elischer 	const priv_p priv = NG_NODE_PRIVATE(node);
553e1e1452dSArchie Cobbs 
554a62b20c4SJulian Elischer 	m->m_pkthdr.rcvif = priv->ifp;
555e1e1452dSArchie Cobbs 
556a176c2aeSGleb Smirnoff 	if (BDG_ACTIVE(priv->ifp) )
557a176c2aeSGleb Smirnoff 		if ((m = bridge_in_ptr(priv->ifp, m)) == NULL)
558a176c2aeSGleb Smirnoff 			return (0);
559a176c2aeSGleb Smirnoff 
560e1e1452dSArchie Cobbs 	/* Route packet back in */
561edbb5246SSam Leffler 	ether_demux(priv->ifp, m);
562e1e1452dSArchie Cobbs 	return (0);
563e1e1452dSArchie Cobbs }
564e1e1452dSArchie Cobbs 
565e1e1452dSArchie Cobbs /*
5661acb27c6SJulian Elischer  * Shutdown node. This resets the node but does not remove it
5671acb27c6SJulian Elischer  * unless the REALLY_DIE flag is set.
568e1e1452dSArchie Cobbs  */
569e1e1452dSArchie Cobbs static int
570069154d5SJulian Elischer ng_ether_shutdown(node_p node)
571e1e1452dSArchie Cobbs {
57230400f03SJulian Elischer 	const priv_p priv = NG_NODE_PRIVATE(node);
5734b39c3c7SArchie Cobbs 
574be4252b3SJulian Elischer 	if (node->nd_flags & NGF_REALLY_DIE) {
5751acb27c6SJulian Elischer 		/*
5761acb27c6SJulian Elischer 		 * WE came here because the ethernet card is being unloaded,
5771acb27c6SJulian Elischer 		 * so stop being persistant.
5781acb27c6SJulian Elischer 		 * Actually undo all the things we did on creation.
5791acb27c6SJulian Elischer 		 * Assume the ifp has already been freed.
5801acb27c6SJulian Elischer 		 */
5811acb27c6SJulian Elischer 		NG_NODE_SET_PRIVATE(node, NULL);
5821acb27c6SJulian Elischer 		FREE(priv, M_NETGRAPH);
5831acb27c6SJulian Elischer 		NG_NODE_UNREF(node);	/* free node itself */
5841acb27c6SJulian Elischer 		return (0);
585069154d5SJulian Elischer 	}
586018df1c3SBrian Feldman 	if (priv->promisc) {		/* disable promiscuous mode */
587018df1c3SBrian Feldman 		(void)ifpromisc(priv->ifp, 0);
588018df1c3SBrian Feldman 		priv->promisc = 0;
589018df1c3SBrian Feldman 	}
5904b39c3c7SArchie Cobbs 	priv->autoSrcAddr = 1;		/* reset auto-src-addr flag */
591be4252b3SJulian Elischer 	NG_NODE_REVIVE(node);		/* Signal ng_rmnode we are persisant */
592be4252b3SJulian Elischer 
593e1e1452dSArchie Cobbs 	return (0);
594e1e1452dSArchie Cobbs }
595e1e1452dSArchie Cobbs 
596e1e1452dSArchie Cobbs /*
597e1e1452dSArchie Cobbs  * Hook disconnection.
598e1e1452dSArchie Cobbs  */
599e1e1452dSArchie Cobbs static int
600e1e1452dSArchie Cobbs ng_ether_disconnect(hook_p hook)
601e1e1452dSArchie Cobbs {
60230400f03SJulian Elischer 	const priv_p priv = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
603e1e1452dSArchie Cobbs 
604a3e232d6SArchie Cobbs 	if (hook == priv->upper) {
605e1e1452dSArchie Cobbs 		priv->upper = NULL;
606b712e9ecSBrian Feldman 		if (priv->ifp != NULL)		/* restore h/w csum */
607b712e9ecSBrian Feldman 			priv->ifp->if_hwassist = priv->hwassist;
6081a292b80SArchie Cobbs 	} else if (hook == priv->lower)
609e1e1452dSArchie Cobbs 		priv->lower = NULL;
6101a292b80SArchie Cobbs 	else if (hook == priv->orphan)
6111a292b80SArchie Cobbs 		priv->orphan = NULL;
6121a292b80SArchie Cobbs 	else
6136e551fb6SDavid E. O'Brien 		panic("%s: weird hook", __func__);
61430400f03SJulian Elischer 	if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
61530400f03SJulian Elischer 	&& (NG_NODE_IS_VALID(NG_HOOK_NODE(hook))))
61630400f03SJulian Elischer 		ng_rmnode_self(NG_HOOK_NODE(hook));	/* reset node */
617e1e1452dSArchie Cobbs 	return (0);
618e1e1452dSArchie Cobbs }
619e1e1452dSArchie Cobbs 
620e1e1452dSArchie Cobbs /******************************************************************
621e1e1452dSArchie Cobbs 		    	INITIALIZATION
622e1e1452dSArchie Cobbs ******************************************************************/
623e1e1452dSArchie Cobbs 
624e1e1452dSArchie Cobbs /*
625e1e1452dSArchie Cobbs  * Handle loading and unloading for this node type.
626e1e1452dSArchie Cobbs  */
627e1e1452dSArchie Cobbs static int
628e1e1452dSArchie Cobbs ng_ether_mod_event(module_t mod, int event, void *data)
629e1e1452dSArchie Cobbs {
630e1e1452dSArchie Cobbs 	struct ifnet *ifp;
631e1e1452dSArchie Cobbs 	int error = 0;
632e1e1452dSArchie Cobbs 	int s;
633e1e1452dSArchie Cobbs 
634e1e1452dSArchie Cobbs 	s = splnet();
635e1e1452dSArchie Cobbs 	switch (event) {
636e1e1452dSArchie Cobbs 	case MOD_LOAD:
637e1e1452dSArchie Cobbs 
638e1e1452dSArchie Cobbs 		/* Register function hooks */
639e1e1452dSArchie Cobbs 		if (ng_ether_attach_p != NULL) {
640e1e1452dSArchie Cobbs 			error = EEXIST;
641e1e1452dSArchie Cobbs 			break;
642e1e1452dSArchie Cobbs 		}
643e1e1452dSArchie Cobbs 		ng_ether_attach_p = ng_ether_attach;
644e1e1452dSArchie Cobbs 		ng_ether_detach_p = ng_ether_detach;
645e1e1452dSArchie Cobbs 		ng_ether_output_p = ng_ether_output;
646e1e1452dSArchie Cobbs 		ng_ether_input_p = ng_ether_input;
647e1e1452dSArchie Cobbs 		ng_ether_input_orphan_p = ng_ether_input_orphan;
648e1e1452dSArchie Cobbs 
649e1e1452dSArchie Cobbs 		/* Create nodes for any already-existing Ethernet interfaces */
650b30a244cSJeffrey Hsu 		IFNET_RLOCK();
651e1e1452dSArchie Cobbs 		TAILQ_FOREACH(ifp, &ifnet, if_link) {
652cf2010b8SArchie Cobbs 			if (ifp->if_type == IFT_ETHER
653cf2010b8SArchie Cobbs 			    || ifp->if_type == IFT_L2VLAN)
654e1e1452dSArchie Cobbs 				ng_ether_attach(ifp);
655e1e1452dSArchie Cobbs 		}
656b30a244cSJeffrey Hsu 		IFNET_RUNLOCK();
657e1e1452dSArchie Cobbs 		break;
658e1e1452dSArchie Cobbs 
659e1e1452dSArchie Cobbs 	case MOD_UNLOAD:
660e1e1452dSArchie Cobbs 
661e1e1452dSArchie Cobbs 		/*
662e1e1452dSArchie Cobbs 		 * Note that the base code won't try to unload us until
663e1e1452dSArchie Cobbs 		 * all nodes have been removed, and that can't happen
664e1e1452dSArchie Cobbs 		 * until all Ethernet interfaces are removed. In any
665e1e1452dSArchie Cobbs 		 * case, we know there are no nodes left if the action
666e1e1452dSArchie Cobbs 		 * is MOD_UNLOAD, so there's no need to detach any nodes.
667e1e1452dSArchie Cobbs 		 */
668e1e1452dSArchie Cobbs 
669e1e1452dSArchie Cobbs 		/* Unregister function hooks */
670e1e1452dSArchie Cobbs 		ng_ether_attach_p = NULL;
671e1e1452dSArchie Cobbs 		ng_ether_detach_p = NULL;
672e1e1452dSArchie Cobbs 		ng_ether_output_p = NULL;
673e1e1452dSArchie Cobbs 		ng_ether_input_p = NULL;
674e1e1452dSArchie Cobbs 		ng_ether_input_orphan_p = NULL;
675e1e1452dSArchie Cobbs 		break;
676e1e1452dSArchie Cobbs 
677e1e1452dSArchie Cobbs 	default:
678e1e1452dSArchie Cobbs 		error = EOPNOTSUPP;
679e1e1452dSArchie Cobbs 		break;
680e1e1452dSArchie Cobbs 	}
681e1e1452dSArchie Cobbs 	splx(s);
682e1e1452dSArchie Cobbs 	return (error);
683e1e1452dSArchie Cobbs }
684e1e1452dSArchie Cobbs 
685