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From:   Daniel Wagner <dwagner@suse.de>
To:     linux-nvme@lists.infradead.org
Cc:     linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
        Chaitanya Kulkarni <kch@nvidia.com>,
        Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>,
        Hannes Reinecke <hare@suse.de>,
        Sagi Grimberg <sagi@grimberg.me>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        Bart Van Assche <bvanassche@acm.org>,
        Daniel Wagner <dwagner@suse.de>
Subject: [PATCH blktests v4 2/3] nvme/{033,034,035,036,37}: drop port handle between passthru target setup and cleanup
Date:   Wed, 30 Aug 2023 11:20:18 +0200
Message-ID: <20230830092019.9846-3-dwagner@suse.de>
In-Reply-To: <20230830092019.9846-1-dwagner@suse.de>
References: <20230830092019.9846-1-dwagner@suse.de>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

The passthru nvmet setup and cleanup helpers are using the port as
handle to track resources.

Instead returning the port from the setup call, we figure out in the
cleanup code which resources have been allocated. This avoids passing
around awkward handles.

Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
---
 tests/nvme/033 |  5 ++---
 tests/nvme/034 |  5 ++---
 tests/nvme/035 |  5 ++---
 tests/nvme/036 |  5 ++---
 tests/nvme/037 |  5 ++---
 tests/nvme/rc  | 30 ++++++++++++++++++++++++------
 6 files changed, 34 insertions(+), 21 deletions(-)

diff --git a/tests/nvme/033 b/tests/nvme/033
index d924883460c2..6cc4f57e6d60 100755
--- a/tests/nvme/033
+++ b/tests/nvme/033
@@ -50,16 +50,15 @@ test_device() {
 	_setup_nvmet
 
 	local nsdev
-	local port
 
-	port=$(_nvmet_passthru_target_setup "${def_subsysnqn}")
+	_nvmet_passthru_target_setup "${def_subsysnqn}"
 
 	nsdev=$(_nvmet_passthru_target_connect "${nvme_trtype}" "${def_subsysnqn}")
 
 	compare_dev_info "${nsdev}"
 
 	_nvme_disconnect_subsys "${def_subsysnqn}"
-	_nvmet_passthru_target_cleanup "${port}" "${def_subsysnqn}"
+	_nvmet_passthru_target_cleanup "${def_subsysnqn}"
 
 	echo "Test complete"
 }
diff --git a/tests/nvme/034 b/tests/nvme/034
index e79eef5e756d..3bd1c3ad2f61 100755
--- a/tests/nvme/034
+++ b/tests/nvme/034
@@ -21,15 +21,14 @@ test_device() {
 
 	local ctrldev
 	local nsdev
-	local port
 
-	port=$(_nvmet_passthru_target_setup "${def_subsysnqn}")
+	_nvmet_passthru_target_setup "${def_subsysnqn}"
 	nsdev=$(_nvmet_passthru_target_connect "${nvme_trtype}" "${def_subsysnqn}")
 
 	_run_fio_verify_io --size="${nvme_img_size}" --filename="${nsdev}"
 
 	_nvme_disconnect_subsys "${def_subsysnqn}"
-	_nvmet_passthru_target_cleanup "${port}" "${def_subsysnqn}"
+	_nvmet_passthru_target_cleanup "${def_subsysnqn}"
 
 	echo "Test complete"
 }
diff --git a/tests/nvme/035 b/tests/nvme/035
index f0dfc92ceeea..712fe1dbcfb8 100755
--- a/tests/nvme/035
+++ b/tests/nvme/035
@@ -27,15 +27,14 @@ test_device() {
 
 	local ctrldev
 	local nsdev
-	local port
 
-	port=$(_nvmet_passthru_target_setup "${def_subsysnqn}")
+	_nvmet_passthru_target_setup "${def_subsysnqn}"
 	nsdev=$(_nvmet_passthru_target_connect "${nvme_trtype}" "${def_subsysnqn}")
 
 	_xfs_run_fio_verify_io "${nsdev}" "${nvme_img_size}"
 
 	_nvme_disconnect_subsys "${def_subsysnqn}"
-	_nvmet_passthru_target_cleanup "${port}" "${def_subsysnqn}"
+	_nvmet_passthru_target_cleanup "${def_subsysnqn}"
 
 	echo "Test complete"
 }
diff --git a/tests/nvme/036 b/tests/nvme/036
index 61b9e2309da7..89ccd256a67c 100755
--- a/tests/nvme/036
+++ b/tests/nvme/036
@@ -19,9 +19,8 @@ test_device() {
 	_setup_nvmet
 
 	local ctrldev
-	local port
 
-	port=$(_nvmet_passthru_target_setup "${def_subsysnqn}")
+	_nvmet_passthru_target_setup "${def_subsysnqn}"
 	nsdev=$(_nvmet_passthru_target_connect "${nvme_trtype}" "${def_subsysnqn}")
 
 	ctrldev=$(_find_nvme_dev "${def_subsysnqn}")
@@ -31,7 +30,7 @@ test_device() {
 	fi
 
 	_nvme_disconnect_subsys "${def_subsysnqn}"
-	_nvmet_passthru_target_cleanup "${port}" "${def_subsysnqn}"
+	_nvmet_passthru_target_cleanup "${def_subsysnqn}"
 
 	echo "Test complete"
 }
diff --git a/tests/nvme/037 b/tests/nvme/037
index 5a78444b7e78..a2815b3ff2d7 100755
--- a/tests/nvme/037
+++ b/tests/nvme/037
@@ -20,15 +20,14 @@ test_device() {
 	local subsys="blktests-subsystem-"
 	local iterations=10
 	local ctrldev
-	local port
 
 	for ((i = 0; i < iterations; i++)); do
-		port=$(_nvmet_passthru_target_setup "${subsys}${i}")
+		_nvmet_passthru_target_setup "${subsys}${i}"
 		nsdev=$(_nvmet_passthru_target_connect "${nvme_trtype}" \
 				"${subsys}${i}")
 
 		_nvme_disconnect_subsys "${subsys}${i}" >>"${FULL}" 2>&1
-		_nvmet_passthru_target_cleanup "${port}" "${subsys}${i}"
+		_nvmet_passthru_target_cleanup "${subsys}${i}"
 	done
 
 	echo "Test complete"
diff --git a/tests/nvme/rc b/tests/nvme/rc
index 10a0d6d27f02..fdffc07da34a 100644
--- a/tests/nvme/rc
+++ b/tests/nvme/rc
@@ -745,6 +745,19 @@ _remove_nvmet_subsystem_from_port() {
 	rm "${NVMET_CFS}/ports/${port}/subsystems/${nvmet_subsystem}"
 }
 
+_get_nvmet_ports() {
+	local nvmet_subsystem="$1"
+	local -n nvmet_ports="$2"
+	local cfs_path="${NVMET_CFS}/ports"
+	local sarg
+
+	sarg="s;^${cfs_path}/\([0-9]\+\)/subsystems/${nvmet_subsystem}$;\1;p"
+
+	for path in "${cfs_path}/"*"/subsystems/${nvmet_subsystem}"; do
+		nvmet_ports+=("$(echo "${path}" | sed -n -s "${sarg}")")
+	done
+}
+
 _set_nvmet_hostkey() {
 	local nvmet_hostnqn="$1"
 	local nvmet_hostkey="$2"
@@ -807,13 +820,12 @@ _find_nvme_passthru_loop_dev() {
 
 _nvmet_passthru_target_setup() {
 	local subsys_name=$1
+	local port
 
 	_create_nvmet_passthru "${subsys_name}"
 	port="$(_create_nvmet_port "${nvme_trtype}")"
 	_add_nvmet_subsys_to_port "${port}" "${subsys_name}"
 	_create_nvmet_host "${subsys_name}" "${def_hostnqn}"
-
-	echo "$port"
 }
 
 _nvmet_passthru_target_connect() {
@@ -832,11 +844,17 @@ _nvmet_passthru_target_connect() {
 }
 
 _nvmet_passthru_target_cleanup() {
-	local port=$1
-	local subsys_name=$2
+	local subsys_name=$1
+	local ports
+	local port
+
+	_get_nvmet_ports "${subsys_name}" ports
+
+	for port in "${ports[@]}"; do
+		_remove_nvmet_subsystem_from_port "${port}" "${subsys_name}"
+		_remove_nvmet_port "${port}"
+	done
 
-	_remove_nvmet_subsystem_from_port "${port}" "${subsys_name}"
-	_remove_nvmet_port "${port}"
 	_remove_nvmet_passhtru "${subsys_name}"
 	_remove_nvmet_host "${def_hostnqn}"
 }
-- 
2.41.0