This patch introduces the skeleton for the Xen netfront driver.
Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>
Signed-off-by: Razvan Cojocaru <razvan.cojocaru93@xxxxxxxxx>
---
plat/xen/Config.uk | 8 ++++
plat/xen/Makefile.uk | 10 ++++
plat/xen/drivers/net/exportsyms.uk | 1 +
plat/xen/drivers/net/netfront.c | 73 ++++++++++++++++++++++++++++++
4 files changed, 92 insertions(+)
create mode 100644 plat/xen/drivers/net/exportsyms.uk
create mode 100644 plat/xen/drivers/net/netfront.c
diff --git a/plat/xen/Config.uk b/plat/xen/Config.uk
index 364c9528..3e542be1 100644
--- a/plat/xen/Config.uk
+++ b/plat/xen/Config.uk
@@ -90,6 +90,14 @@ config XEN_XENBUS
menu "Xenbus Drivers"
depends on XEN_XENBUS
+config XEN_NETFRONT
+ bool "Xenbus Netfront Driver"
+ default y if LIBUKNETDEV
+ default n
+ depends on LIBUKNETDEV
+ help
+ Driver for netfront devices
+
menuconfig XEN_BLKFRONT
bool "Xenbus Blkfront Driver"
default n
diff --git a/plat/xen/Makefile.uk b/plat/xen/Makefile.uk
index 2a8cdbf6..339b1b21 100644
--- a/plat/xen/Makefile.uk
+++ b/plat/xen/Makefile.uk
@@ -10,6 +10,7 @@ $(eval $(call addplat_s,xen,$(CONFIG_PLAT_XEN)))
##
$(eval $(call addplatlib,xen,libxenplat))
$(eval $(call addplatlib_s,xen,libxenbus,$(CONFIG_XEN_XENBUS)))
+$(eval $(call addplatlib_s,xen,libxennetfront,$(CONFIG_XEN_NETFRONT)))
$(eval $(call addplatlib_s,xen,libxenblkfront,$(CONFIG_XEN_BLKFRONT)))
$(eval $(call addplatlib_s,xen,libxen9pfront,$(CONFIG_XEN_9PFRONT)))
@@ -113,6 +114,15 @@ LIBXENBUS_SRCS-y += $(LIBXENPLAT_BASE)/xenbus/xs_watch.c
LIBXENBUS_SRCS-y += $(LIBXENPLAT_BASE)/xenbus/xs.c
endif
+ifeq ($(CONFIG_XEN_NETFRONT),y)
+LIBXENNETFRONT_EXPORTS = $(LIBXENPLAT_BASE)/drivers/net/exportsyms.uk
+LIBXENNETFRONT_ASFLAGS-y += $(LIBXENPLAT_ASFLAGS-y)
+LIBXENNETFRONT_ASINCLUDES-y += $(LIBXENPLAT_ASINCLUDES-y)
+LIBXENNETFRONT_CFLAGS-y += $(LIBXENPLAT_CFLAGS-y)
+LIBXENNETFRONT_CINCLUDES-y += $(LIBXENPLAT_CINCLUDES-y)
+LIBXENNETFRONT_SRCS-y += $(LIBXENPLAT_BASE)/drivers/net/netfront.c
+endif
+
ifeq ($(CONFIG_XEN_BLKFRONT),y)
LIBXENBLKFRONT_EXPORTS =
$(LIBXENPLAT_BASE)/drivers/blk/exportsyms.uk
LIBXENBLKFRONT_ASFLAGS-y += $(LIBXENPLAT_ASFLAGS-y)
diff --git a/plat/xen/drivers/net/exportsyms.uk
b/plat/xen/drivers/net/exportsyms.uk
new file mode 100644
index 00000000..c86c3f35
--- /dev/null
+++ b/plat/xen/drivers/net/exportsyms.uk
@@ -0,0 +1 @@
+none
\ No newline at end of file
diff --git a/plat/xen/drivers/net/netfront.c b/plat/xen/drivers/net/netfront.c
new file mode 100644
index 00000000..b455911e
--- /dev/null
+++ b/plat/xen/drivers/net/netfront.c
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/*
+ * Authors: Costin Lupu <costin.lupu@xxxxxxxxx>
+ * Razvan Cojocaru <razvan.cojocaru93@xxxxxxxxx>
+ *
+ * Copyright (c) 2020, University Politehnica of Bucharest. All rights
reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+ */
+
+#include <xenbus/xenbus.h>
+
+
+#define DRIVER_NAME "xen-netfront"
+
+static struct uk_alloc *drv_allocator;
+
+
+static int netfront_add_dev(struct xenbus_device *xendev)
+{
+ int rc = 0;
+
+ UK_ASSERT(xendev != NULL);
+
+ return rc;
+}
+
+static int netfront_drv_init(struct uk_alloc *allocator)
+{
+ /* driver initialization */
+ if (!allocator)
+ return -EINVAL;
+
+ drv_allocator = allocator;
+ return 0;
+}
+
+static const xenbus_dev_type_t netfront_devtypes[] = {
+ xenbus_dev_vif,
+ xenbus_dev_none
+};
+
+static struct xenbus_driver netfront_driver = {
+ .device_types = netfront_devtypes,
+ .init = netfront_drv_init,
+ .add_dev = netfront_add_dev
+};
+XENBUS_REGISTER_DRIVER(&netfront_driver);
