[ndctl PATCH v9 13/13] test: Add a unit test for daxctl-reconfigure-device and friends

[Vishal Verma <vishal.l.verma@intel.com>]

Add a new unit test to test dax device reconfiguration and memory
operations. This teaches test/common about daxctl, and adds an ACPI.NFIT
bus variable. Since we have to operate on the ACPI.NFIT bus, the test is
marked as destructive.

Cc: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
---
 test/Makefile.am       |  3 +-
 test/common            | 19 ++++++++--
 test/daxctl-devices.sh | 81 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 99 insertions(+), 4 deletions(-)
 create mode 100755 test/daxctl-devices.sh

diff --git a/test/Makefile.am b/test/Makefile.am
index 874c4bb..84474d0 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -49,7 +49,8 @@ TESTS +=\
 	dax.sh \
 	device-dax \
 	device-dax-fio.sh \
-	mmap.sh
+	mmap.sh \
+	daxctl-devices.sh
 
 if ENABLE_KEYUTILS
 TESTS += security.sh
diff --git a/test/common b/test/common
index 1b9d3da..1814a0c 100644
--- a/test/common
+++ b/test/common
@@ -15,12 +15,25 @@ else
 	exit 1
 fi
 
-# NFIT_TEST_BUS[01]
+# DAXCTL
 #
-NFIT_TEST_BUS0=nfit_test.0
-NFIT_TEST_BUS1=nfit_test.1
+if [ -f "../daxctl/daxctl" ] && [ -x "../daxctl/daxctl" ]; then
+	export DAXCTL=../daxctl/daxctl
+elif [ -f "./daxctl/daxctl" ] && [ -x "./daxctl/daxctl" ]; then
+	export DAXCTL=./daxctl/daxctl
+else
+	echo "Couldn't find an daxctl binary"
+	exit 1
+fi
 
 
+# NFIT_TEST_BUS[01]
+#
+NFIT_TEST_BUS0="nfit_test.0"
+NFIT_TEST_BUS1="nfit_test.1"
+ACPI_BUS="ACPI.NFIT"
+E820_BUS="e820"
+
 # Functions
 
 # err
diff --git a/test/daxctl-devices.sh b/test/daxctl-devices.sh
new file mode 100755
index 0000000..04f53f7
--- /dev/null
+++ b/test/daxctl-devices.sh
@@ -0,0 +1,81 @@
+#!/bin/bash -Ex
+# SPDX-License-Identifier: GPL-2.0
+# Copyright(c) 2019 Intel Corporation. All rights reserved.
+
+rc=77
+. ./common
+
+trap 'cleanup $LINENO' ERR
+
+cleanup()
+{
+	printf "Error at line %d\n" "$1"
+	[[ $testdev ]] && reset_dev
+	exit $rc
+}
+
+find_testdev()
+{
+	local rc=77
+
+	# find a victim device
+	testbus="$ACPI_BUS"
+	testdev=$("$NDCTL" list -b "$testbus" -Ni | jq -er '.[0].dev | .//""')
+	if [[ ! $testdev  ]]; then
+		printf "Unable to find a victim device\n"
+		exit "$rc"
+	fi
+	printf "Found victim dev: %s on bus: %s\n" "$testdev" "$testbus"
+}
+
+setup_dev()
+{
+	test -n "$testbus"
+	test -n "$testdev"
+
+	"$NDCTL" destroy-namespace -f -b "$testbus" "$testdev"
+	testdev=$("$NDCTL" create-namespace -b "$testbus" -m devdax -fe "$testdev" -s 256M | \
+		jq -er '.dev')
+	test -n "$testdev"
+}
+
+reset_dev()
+{
+	"$NDCTL" destroy-namespace -f -b "$testbus" "$testdev"
+}
+
+daxctl_get_dev()
+{
+	"$NDCTL" list -n "$1" -X | jq -er '.[].daxregion.devices[0].chardev'
+}
+
+daxctl_get_mode()
+{
+	"$DAXCTL" list -d "$1" | jq -er '.[].mode'
+}
+
+daxctl_test()
+{
+	local daxdev
+
+	daxdev=$(daxctl_get_dev "$testdev")
+	test -n "$daxdev"
+
+	"$DAXCTL" reconfigure-device -N -m system-ram "$daxdev"
+	[[ $(daxctl_get_mode "$daxdev") == "system-ram" ]]
+	"$DAXCTL" online-memory "$daxdev"
+	"$DAXCTL" offline-memory "$daxdev"
+	"$DAXCTL" reconfigure-device -m devdax "$daxdev"
+	[[ $(daxctl_get_mode "$daxdev") == "devdax" ]]
+	"$DAXCTL" reconfigure-device -m system-ram "$daxdev"
+	[[ $(daxctl_get_mode "$daxdev") == "system-ram" ]]
+	"$DAXCTL" reconfigure-device -f -m devdax "$daxdev"
+	[[ $(daxctl_get_mode "$daxdev") == "devdax" ]]
+}
+
+find_testdev
+setup_dev
+rc=1
+daxctl_test
+reset_dev
+exit 0
-- 
2.20.1

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