From 7729daf9ed9309a16648e7f5a2136a95d694d062 Mon Sep 17 00:00:00 2001
From: Jan Blunck <jblunck@infradead.org>
Date: Fri, 30 Jun 2017 20:19:32 +0200
Subject: [PATCH] bus/vdev: implement method to find device

Signed-off-by: Jan Blunck <jblunck@infradead.org>
Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
---
 lib/librte_eal/common/eal_common_vdev.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/lib/librte_eal/common/eal_common_vdev.c b/lib/librte_eal/common/eal_common_vdev.c
index b4db2be8dd..9bb7427419 100644
--- a/lib/librte_eal/common/eal_common_vdev.c
+++ b/lib/librte_eal/common/eal_common_vdev.c
@@ -35,6 +35,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
+#include <stdbool.h>
 #include <sys/queue.h>
 
 #include <rte_eal.h>
@@ -334,9 +335,29 @@ vdev_probe(void)
 	return 0;
 }
 
+static struct rte_device *
+vdev_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
+		 const void *data)
+{
+	struct rte_vdev_device *dev;
+	bool start_found = !start;
+
+	TAILQ_FOREACH(dev, &vdev_device_list, next) {
+		if (start_found == 0) {
+			if (&dev->device == start)
+				start_found = 1;
+			continue;
+		}
+		if (cmp(&dev->device, data) == 0)
+			return &dev->device;
+	}
+	return NULL;
+}
+
 static struct rte_bus rte_vdev_bus = {
 	.scan = vdev_scan,
 	.probe = vdev_probe,
+	.find_device = vdev_find_device,
 };
 
 RTE_REGISTER_BUS(VIRTUAL_BUS_NAME, rte_vdev_bus);