[dpdk-dev] [PATCH v6 18/22] bus/vdev: add device matching field driver

[Gaetan Rivet]

The vdev bus parses a field "driver", matching
a vdev driver name with one passed as follows:

   "bus=vdev,driver=xxxx"

Signed-off-by: Gaetan Rivet <gaetan.rivet at 6wind.com>
---
 drivers/bus/vdev/Makefile |  1 +
 drivers/bus/vdev/vdev.c   | 14 ++++++++++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/bus/vdev/Makefile b/drivers/bus/vdev/Makefile
index 52728833c..db6bee98a 100644
--- a/drivers/bus/vdev/Makefile
+++ b/drivers/bus/vdev/Makefile
@@ -10,6 +10,7 @@ LIB = librte_bus_vdev.a
 
 CFLAGS += -O3
 CFLAGS += $(WERROR_FLAGS)
+CFLAGS += -DALLOW_EXPERIMENTAL_API
 
 # versioning export map
 EXPORT_MAP := rte_bus_vdev_version.map
diff --git a/drivers/bus/vdev/vdev.c b/drivers/bus/vdev/vdev.c
index 5bb87af28..84192d79b 100644
--- a/drivers/bus/vdev/vdev.c
+++ b/drivers/bus/vdev/vdev.c
@@ -389,10 +389,12 @@ vdev_unplug(struct rte_device *dev)
 }
 
 enum vdev_params {
+	RTE_VDEV_PARAMS_DRIVER,
 	RTE_VDEV_PARAMS_MAX,
 };
 
 static const char * const vdev_params_keys[] = {
+	[RTE_VDEV_PARAMS_DRIVER] = "driver",
 	[RTE_VDEV_PARAMS_MAX] = NULL,
 };
 
@@ -401,9 +403,17 @@ vdev_dev_match(const struct rte_device *dev,
 	       const void *_kvlist)
 {
 	const struct rte_kvargs *kvlist = _kvlist;
+	const struct rte_vdev_device *vdev;
 
-	(void) kvlist;
-	(void) dev;
+	if (kvlist == NULL)
+		/* Empty string matches everything. */
+		return 0;
+	vdev = RTE_DEV_TO_VDEV_CONST(dev);
+	/* if any field does not match. */
+	if (rte_kvargs_process(kvlist, "driver",
+		rte_kvargs_strcmp,
+		(void *)(intptr_t)vdev->device.driver->name))
+		return -1;
 	return 0;
 }
 
-- 
2.11.0