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From: Gaetan Rivet <gaetan.rivet@6wind.com>
To: dev@dpdk.org
Cc: Gaetan Rivet <gaetan.rivet@6wind.com>
Date: Wed, 11 Apr 2018 02:04:17 +0200
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Subject: [dpdk-dev] [PATCH v5 16/21] bus/vdev: implement device iteration
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Signed-off-by: Gaetan Rivet <gaetan.rivet@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