[dpdk-dev] [RFC 2/3] usertools: add hv_uio_setup script

[Stephen Hemminger <stephen@networkplumber.org>]

From: Stephen Hemminger <sthemmin@microsoft.com>

Small script to rebind netvsc kernel device to Hyper-V
networking PMD. The existing dev_bind.py script is PCI specific
and won't work with VMBUS.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
---
 usertools/hv_uio_setup.sh | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100755 usertools/hv_uio_setup.sh

diff --git a/usertools/hv_uio_setup.sh b/usertools/hv_uio_setup.sh
new file mode 100755
index 000000000000..fc56ec6f9273
--- /dev/null
+++ b/usertools/hv_uio_setup.sh
@@ -0,0 +1,39 @@
+#! /bin/bash
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2018 Microsoft Corporation
+
+module=uio_hv_generic
+guid="f8615163-df3e-46c5-913f-f2d2f965ed0e"
+
+if [ $# -ne 1 ]; then
+	echo "Usage: $0 ethN"
+	exit 1
+fi
+
+syspath=/sys/class/net/$1/device
+devpath=$(readlink $syspath)
+if [ $? -ne 0 ]; then
+	echo "$1 no device present"
+	exit 1
+fi
+guid=$(basename $devpath)
+
+driver=$(readlink $syspath/driver)
+if [ $? -ne 0 ]; then
+	echo "$1 driver not found"
+	exit 1
+fi
+existing=$(basename $driver)
+
+if [ "$existing" != "hv_netvsc" ]; then
+	echo "$1 controlled by $existing"
+	exit 1
+fi
+
+if [ ! -d /sys/module/$module ]; then
+    modprobe $module
+    echo $guid >/sys/bus/vmbus/drivers/uio_hv_generic/new_id
+fi
+
+echo $guid > /sys/bus/vmbus/drivers/$existing/unbind
+echo $guid > /sys/bus/vmbus/drivers/$module/bind
-- 
2.15.1