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From: Gaetan Rivet <gaetan.rivet@6wind.com>
To: dev@dpdk.org
Cc: Gaetan Rivet <gaetan.rivet@6wind.com>
Date: Thu, 15 Mar 2018 18:49:46 +0100
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Subject: [dpdk-dev] [PATCH v1 16/18] 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 | 54 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 55 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 68306f4eb..d695bdf24 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 +416,58 @@ vdev_unplug(struct rte_device *dev)
return rte_vdev_uninit(dev->name);
}
+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 struct rte_device *
+vdev_dev_iterate(struct rte_dev_iterator *it)
+{
+ struct rte_device *dev = it->device;
+ struct rte_kvargs *kvargs = NULL;
+ char *str = NULL;
+
+ if (it->busstr != NULL) {
+ char *slash;
+
+ str = strdup(it->busstr);
+ if (str == NULL) {
+ VDEV_LOG(ERR, "could not allocate string copy\n");
+ rte_errno = ENOMEM;
+ return NULL;
+ }
+ slash = strchr(str, '/');
+ slash = slash ? slash : strchr(str, '\0');
+ if (slash == NULL) {
+ VDEV_LOG(ERR, "malformed string\n");
+ rte_errno = EINVAL;
+ goto free_str;
+ }
+ slash[0] = '\0';
+ kvargs = rte_kvargs_parse(str, NULL);
+ if (kvargs == NULL) {
+ VDEV_LOG(ERR, "cannot parse argument list\n");
+ rte_errno = EINVAL;
+ goto free_str;
+ }
+ }
+ dev = vdev_find_device(dev, vdev_dev_match, kvargs);
+ it->device = dev;
+free_str:
+ if (it->busstr != NULL) {
+ free(str);
+ rte_kvargs_free(kvargs);
+ }
+ return dev;
+}
+
static struct rte_bus rte_vdev_bus = {
.scan = vdev_scan,
.probe = vdev_probe,
@@ -422,6 +475,7 @@ 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