[dpdk-dev] [PATCH v5 16/21] bus/vdev: implement device iteration

[Gaetan Rivet]

Signed-off-by: Gaetan Rivet <gaetan.ri...@6wind.com>
---
 drivers/bus/vdev/Makefile |  2 +-
 drivers/bus/vdev/vdev.c   | 42 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/vdev/Makefile b/drivers/bus/vdev/Makefile
index 24d424a38..52728833c 100644
--- a/drivers/bus/vdev/Makefile
+++ b/drivers/bus/vdev/Makefile
@@ -19,7 +19,7 @@ LIBABIVER := 1
 
 SRCS-y += vdev.c
 
-LDLIBS += -lrte_eal
+LDLIBS += -lrte_eal -lrte_kvargs
 
 #
 # Export include files
diff --git a/drivers/bus/vdev/vdev.c b/drivers/bus/vdev/vdev.c
index 66fe63e85..1cc469da0 100644
--- a/drivers/bus/vdev/vdev.c
+++ b/drivers/bus/vdev/vdev.c
@@ -43,6 +43,7 @@
 #include <rte_bus.h>
 #include <rte_common.h>
 #include <rte_devargs.h>
+#include <rte_kvargs.h>
 #include <rte_memory.h>
 #include <rte_tailq.h>
 #include <rte_spinlock.h>
@@ -415,6 +416,46 @@ vdev_unplug(struct rte_device *dev)
        return rte_vdev_uninit(dev->name);
 }
 
+enum vdev_params {
+       RTE_VDEV_PARAMS_MAX,
+};
+
+static const char * const vdev_params_keys[] = {
+       [RTE_VDEV_PARAMS_MAX] = NULL,
+};
+
+static int
+vdev_dev_match(const struct rte_device *dev,
+              const void *_kvlist)
+{
+       const struct rte_kvargs *kvlist = _kvlist;
+
+       (void) kvlist;
+       (void) dev;
+       return 0;
+}
+
+static void *
+vdev_dev_iterate(const void *start,
+                const char *str,
+                const struct rte_dev_iterator *it __rte_unused)
+{
+       struct rte_kvargs *kvargs = NULL;
+       struct rte_device *dev;
+
+       if (str != NULL) {
+               kvargs = rte_kvargs_parse(str, vdev_params_keys);
+               if (kvargs == NULL) {
+                       VDEV_LOG(ERR, "cannot parse argument list\n");
+                       rte_errno = EINVAL;
+                       return NULL;
+               }
+       }
+       dev = vdev_find_device(start, vdev_dev_match, kvargs);
+       rte_kvargs_free(kvargs);
+       return dev;
+}
+
 static struct rte_bus rte_vdev_bus = {
        .scan = vdev_scan,
        .probe = vdev_probe,
@@ -422,6 +463,7 @@ static struct rte_bus rte_vdev_bus = {
        .plug = vdev_plug,
        .unplug = vdev_unplug,
        .parse = vdev_parse,
+       .dev_iterate = vdev_dev_iterate,
 };
 
 RTE_REGISTER_BUS(vdev, rte_vdev_bus);
-- 
2.11.0