1 files changed, 163 insertions, 0 deletions
diff --git a/usr/src/uts/common/xen/io/xnbe.c b/usr/src/uts/common/xen/io/xnbe.c
new file mode 100644
index 0000000000..39ff373398
--- /dev/null
+++ b/usr/src/uts/common/xen/io/xnbe.c
@@ -0,0 +1,163 @@
+/*
+ * 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 2007 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*
+ * Xen network backend - ioemu version.
+ *
+ * HVM guest domains use an emulated network device (typically the
+ * rtl8139) to access the physical network via IO emulation running in
+ * a backend domain (generally domain 0).
+ *
+ * The IO emulation code sends and receives packets using DLPI, usually
+ * through a virtual NIC (vnic).
+ *
+ * The creation of the relevant vnic to correspond to the network interface
+ * in the guest domain requires the use of 'hotplug' scripts in the backend
+ * domain. This driver ensures that the hotplug scripts are run when
+ * such guest domains are created.
+ *
+ * It is used as a result of the 'compatible' property associated with
+ * IO emulated devices. See /etc/driver_aliases and common/xen/os/xvdi.c.
+ */
+
+#ifdef DEBUG
+#define	XNBE_DEBUG 1
+#endif /* DEBUG */
+
+#include <sys/types.h>
+#include <sys/conf.h>
+#include <sys/sunddi.h>
+#include <sys/modctl.h>
+#include <xen/sys/xendev.h>
+#ifdef XNBE_DEBUG
+#include <sys/cmn_err.h>
+#endif /* XNBE_DEBUG */
+
+#ifdef XNBE_DEBUG
+int xnbe_debug = 0;
+#endif /* XNBE_DEBUG */
+
+static int
+xnbe_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
+{
+#ifdef XNBE_DEBUG
+	if (xnbe_debug > 0)
+		cmn_err(CE_NOTE, "xnbe_attach: dip 0x%p, cmd %d",
+		    (void *)dip, cmd);
+#endif /* XNBE_DEBUG */
+
+	switch (cmd) {
+	case DDI_ATTACH:
+		break;
+	case DDI_RESUME:
+		return (DDI_SUCCESS);
+	default:
+		return (DDI_FAILURE);
+	}
+
+	(void) xvdi_post_event(dip, XEN_HP_ADD);
+
+	return (DDI_SUCCESS);
+}
+
+static int
+xnbe_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
+{
+#ifdef XNBE_DEBUG
+	if (xnbe_debug > 0)
+		cmn_err(CE_NOTE, "detach: dip 0x%p, cmd %d",
+		    (void *)dip, cmd);
+#endif /* XNBE_DEBUG */
+
+	switch (cmd) {
+	case DDI_DETACH:
+		return (DDI_SUCCESS);
+	case DDI_SUSPEND:
+		return (DDI_SUCCESS);
+	default:
+		return (DDI_FAILURE);
+	}
+}
+
+static struct cb_ops cb_ops = {
+	nulldev,		/* open */
+	nulldev,		/* close */
+	nodev,			/* strategy */
+	nodev,			/* print */
+	nodev,			/* dump */
+	nodev,			/* read */
+	nodev,			/* write */
+	nodev,			/* ioctl */
+	nodev,			/* devmap */
+	nodev,			/* mmap */
+	nodev,			/* segmap */
+	nochpoll,		/* poll */
+	ddi_prop_op,		/* cb_prop_op */
+	0,			/* streamtab  */
+	D_NEW | D_MP | D_64BIT	/* Driver compatibility flag */
+};
+
+static struct dev_ops ops = {
+	DEVO_REV,		/* devo_rev */
+	0,			/* devo_refcnt  */
+	nulldev,		/* devo_getinfo */
+	nulldev,		/* devo_identify */
+	nulldev,		/* devo_probe */
+	xnbe_attach,		/* devo_attach */
+	xnbe_detach,		/* devo_detach */
+	nodev,			/* devo_reset */
+	&cb_ops,		/* devo_cb_ops */
+	(struct bus_ops *)0,	/* devo_bus_ops */
+	NULL			/* devo_power */
+};
+
+static struct modldrv modldrv = {
+	&mod_driverops, "xnbe driver %I%", &ops,
+};
+
+static struct modlinkage modlinkage = {
+	MODREV_1, &modldrv, NULL
+};
+
+int
+_init(void)
+{
+	return (mod_install(&modlinkage));
+}
+
+int
+_info(struct modinfo *modinfop)
+{
+	return (mod_info(&modlinkage, modinfop));
+}
+
+int
+_fini(void)
+{
+	return (mod_remove(&modlinkage));
+}