1 files changed, 338 insertions, 0 deletions
diff --git a/usr/src/uts/common/inet/arp/arp_netinfo.c b/usr/src/uts/common/inet/arp/arp_netinfo.c
new file mode 100644
index 0000000000..49dd1ef78a
--- /dev/null
+++ b/usr/src/uts/common/inet/arp/arp_netinfo.c
@@ -0,0 +1,338 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/systm.h>
+#include <sys/cmn_err.h>
+#include <sys/stream.h>
+#include <sys/sunddi.h>
+#include <sys/hook.h>
+#include <sys/hook_impl.h>
+#include <net/if.h>
+
+#include <sys/neti.h>
+#include <sys/hook_event.h>
+#include <inet/arp_impl.h>
+
+/*
+ * ARP netinfo entry point declarations.
+ */
+static int 	arp_getifname(phy_if_t, char *, const size_t);
+static int 	arp_getmtu(phy_if_t, lif_if_t);
+static int 	arp_getpmtuenabled(void);
+static int 	arp_getlifaddr(phy_if_t, lif_if_t, size_t,
+		    net_ifaddr_t [], void *);
+static phy_if_t arp_phygetnext(phy_if_t);
+static phy_if_t arp_phylookup(const char *);
+static lif_if_t arp_lifgetnext(phy_if_t, lif_if_t);
+static int 	arp_inject(inject_t, net_inject_t *);
+static phy_if_t arp_routeto(struct sockaddr *);
+static int 	arp_ispartialchecksum(mblk_t *);
+static int 	arp_isvalidchecksum(mblk_t *);
+
+static net_info_t arp_netinfo = {
+	NETINFO_VERSION,
+	NHF_ARP,
+	arp_getifname,
+	arp_getmtu,
+	arp_getpmtuenabled,
+	arp_getlifaddr,
+	arp_phygetnext,
+	arp_phylookup,
+	arp_lifgetnext,
+	arp_inject,
+	arp_routeto,
+	arp_ispartialchecksum,
+	arp_isvalidchecksum
+};
+
+static hook_family_t	arproot;
+
+/*
+ * Hooks for ARP
+ */
+
+hook_event_t		arp_physical_in_event;
+hook_event_t		arp_physical_out_event;
+hook_event_t		arp_nic_events;
+
+hook_event_token_t	arp_physical_in;
+hook_event_token_t	arp_physical_out;
+hook_event_token_t	arpnicevents;
+
+net_data_t		arp = NULL;
+
+/*
+ * Register ARP netinfo functions.
+ */
+void
+arp_net_init()
+{
+
+	arp = net_register(&arp_netinfo);
+	ASSERT(arp != NULL);
+}
+
+/*
+ * Unregister ARP netinfo functions.
+ */
+void
+arp_net_destroy()
+{
+
+	(void) net_unregister(arp);
+}
+
+/*
+ * Initialize ARP hook family and events
+ */
+void
+arp_hook_init()
+{
+
+	HOOK_FAMILY_INIT(&arproot, Hn_ARP);
+	if (net_register_family(arp, &arproot) != 0) {
+		cmn_err(CE_NOTE, "arp_hook_init: "
+		    "net_register_family failed for arp");
+	}
+
+	HOOK_EVENT_INIT(&arp_physical_in_event, NH_PHYSICAL_IN);
+	arp_physical_in = net_register_event(arp, &arp_physical_in_event);
+	if (arp_physical_in == NULL) {
+		cmn_err(CE_NOTE, "arp_hook_init: "
+		    "net_register_event failed for arp/physical_in");
+	}
+
+	HOOK_EVENT_INIT(&arp_physical_out_event, NH_PHYSICAL_OUT);
+	arp_physical_out = net_register_event(arp, &arp_physical_out_event);
+	if (arp_physical_out == NULL) {
+		cmn_err(CE_NOTE, "arp_hook_init: "
+		    "net_register_event failed for arp/physical_out");
+	}
+
+	HOOK_EVENT_INIT(&arp_nic_events, NH_NIC_EVENTS);
+	arpnicevents = net_register_event(arp, &arp_nic_events);
+	if (arpnicevents == NULL) {
+		cmn_err(CE_NOTE, "arp_hook_init: "
+		    "net_register_event failed for arp/nic_events");
+	}
+}
+
+
+void
+arp_hook_destroy()
+{
+	if (arpnicevents != NULL) {
+		if (net_unregister_event(arp, &arp_nic_events) == 0)
+			arpnicevents = NULL;
+	}
+
+	if (arp_physical_out != NULL) {
+		if (net_unregister_event(arp, &arp_physical_out_event) == 0)
+			arp_physical_out = NULL;
+	}
+
+	if (arp_physical_in != NULL) {
+		if (net_unregister_event(arp, &arp_physical_in_event) == 0)
+			arp_physical_in = NULL;
+	}
+
+	(void) net_unregister_family(arp, &arproot);
+}
+
+
+/*
+ * Determine the name of the lower level interface
+ */
+int
+arp_getifname(phy_if_t phy_ifdata, char *buffer, const size_t buflen)
+{
+	arl_t	*arl;
+
+	ASSERT(buffer != NULL);
+
+	rw_enter(&arl_g_lock, RW_READER);
+	for (arl = arl_g_head; arl != NULL; arl = arl->arl_next) {
+		if (arl->arl_index == phy_ifdata) {
+			(void) strlcpy(buffer, arl->arl_name, buflen);
+			rw_exit(&arl_g_lock);
+			return (0);
+		}
+	}
+	rw_exit(&arl_g_lock);
+
+	return (1);
+}
+
+
+/*
+ * Unsupported with ARP.
+ */
+/*ARGSUSED*/
+int
+arp_getmtu(phy_if_t phy_ifdata, lif_if_t ifdata)
+{
+
+	return (-1);
+}
+
+
+/*
+ * Unsupported with ARP.
+ */
+/*ARGSUSED*/
+int
+arp_getpmtuenabled(void)
+{
+
+	return (-1);
+}
+
+
+/*
+ * Unsupported with ARP.
+ */
+/*ARGSUSED*/
+int
+arp_getlifaddr(phy_if_t phy_ifdata, lif_if_t ifdata, size_t nelem,
+	net_ifaddr_t type[], void *storage)
+{
+
+	return (-1);
+}
+
+
+/*
+ * Determine the instance number of the next lower level interface
+ */
+phy_if_t
+arp_phygetnext(phy_if_t phy_ifdata)
+{
+	arl_t *arl;
+	int index;
+
+	rw_enter(&arl_g_lock, RW_READER);
+	if (phy_ifdata == 0) {
+		arl = arl_g_head;
+	} else {
+		for (arl = arl_g_head; arl != NULL; arl = arl->arl_next) {
+			if (arl->arl_index == phy_ifdata) {
+				arl = arl->arl_next;
+				break;
+			}
+		}
+	}
+
+	index = (arl != NULL) ? arl->arl_index : 0;
+
+	rw_exit(&arl_g_lock);
+
+	return (index);
+}
+
+
+/*
+ * Given a network interface name, find its ARP layer instance number.
+ */
+phy_if_t
+arp_phylookup(const char *name)
+{
+	arl_t *arl;
+	int index;
+
+	ASSERT(name != NULL);
+
+	index = 0;
+
+	rw_enter(&arl_g_lock, RW_READER);
+	for (arl = arl_g_head; arl != NULL; arl = arl->arl_next) {
+		if (strcmp(name, arl->arl_name) == 0) {
+			index = arl->arl_index;
+			break;
+		}
+	}
+	rw_exit(&arl_g_lock);
+
+	return (index);
+
+}
+
+
+/*
+ * Unsupported with ARP.
+ */
+/*ARGSUSED*/
+lif_if_t
+arp_lifgetnext(phy_if_t ifp, lif_if_t lif)
+{
+	return (lif_if_t)(-1);
+}
+
+
+/*
+ * Unsupported with ARP.
+ */
+/*ARGSUSED*/
+int
+arp_inject(inject_t injection, net_inject_t *neti)
+{
+	return (-1);
+}
+
+
+/*
+ * Unsupported with ARP.
+ */
+/*ARGSUSED*/
+phy_if_t
+arp_routeto(struct sockaddr *addr)
+{
+	return (phy_if_t)(-1);
+}
+
+
+/*
+ * Unsupported with ARP.
+ */
+/*ARGSUSED*/
+int
+arp_ispartialchecksum(mblk_t *mb)
+{
+	return (-1);
+}
+
+
+/*
+ * Unsupported with ARP.
+ */
+/*ARGSUSED*/
+int
+arp_isvalidchecksum(mblk_t *mb)
+{
+	return (-1);
+}