[dpdk-dev] [PATCH] eal: remove vdev probe by dev args

[Ferruh Yigit]

Virtual device/driver probing done via name.

A new alternative method introduced to probe the device with providing
driver name in devargs as "driver=<driver_name>".

This patch removes alternative method and fixes virtual device usages
with proper device names.

Fixes: 87c3bf29c642 ("test: do not short-circuit null device creation")
Fixes: d39670086a63 ("eal: parse driver argument before probing drivers")

Signed-off-by: Ferruh Yigit <ferruh.yigit at intel.com>
---
 drivers/net/null/rte_eth_null.c         |  1 -
 lib/librte_eal/common/eal_common_vdev.c | 40 ++-------------------------------
 test/test/test_link_bonding_rssconf.c   |  5 ++---
 3 files changed, 4 insertions(+), 42 deletions(-)

diff --git a/drivers/net/null/rte_eth_null.c b/drivers/net/null/rte_eth_null.c
index 2c94339..5aef059 100644
--- a/drivers/net/null/rte_eth_null.c
+++ b/drivers/net/null/rte_eth_null.c
@@ -49,7 +49,6 @@ static unsigned default_packet_copy;
 static const char *valid_arguments[] = {
 	ETH_NULL_PACKET_SIZE_ARG,
 	ETH_NULL_PACKET_COPY_ARG,
-	"driver",
 	NULL
 };
 
diff --git a/lib/librte_eal/common/eal_common_vdev.c b/lib/librte_eal/common/eal_common_vdev.c
index 0037a64..8744cc1 100644
--- a/lib/librte_eal/common/eal_common_vdev.c
+++ b/lib/librte_eal/common/eal_common_vdev.c
@@ -70,48 +70,14 @@ rte_vdev_unregister(struct rte_vdev_driver *driver)
 	TAILQ_REMOVE(&vdev_driver_list, driver, next);
 }
 
-/*
- * Parse "driver" devargs without adding a dependency on rte_kvargs.h
- */
-static char *parse_driver_arg(const char *args)
-{
-	const char *c;
-	char *str;
-
-	if (!args || args[0] == '\0')
-		return NULL;
-
-	c = args;
-
-	do {
-		if (strncmp(c, "driver=", 7) == 0) {
-			c += 7;
-			break;
-		}
-
-		c = strchr(c, ',');
-		if (c)
-			c++;
-	} while (c);
-
-	if (c)
-		str = strdup(c);
-	else
-		str = NULL;
-
-	return str;
-}
-
 static int
 vdev_probe_all_drivers(struct rte_vdev_device *dev)
 {
 	const char *name;
-	char *drv_name;
 	struct rte_vdev_driver *driver;
 	int ret = 1;
 
-	drv_name = parse_driver_arg(rte_vdev_device_args(dev));
-	name = drv_name ? drv_name : rte_vdev_device_name(dev);
+	name = rte_vdev_device_name(dev);
 
 	RTE_LOG(DEBUG, EAL, "Search driver %s to probe device %s\n", name,
 		rte_vdev_device_name(dev));
@@ -129,7 +95,7 @@ vdev_probe_all_drivers(struct rte_vdev_device *dev)
 			ret = driver->probe(dev);
 			if (ret)
 				dev->device.driver = NULL;
-			goto out;
+			return ret;
 		}
 	}
 
@@ -146,8 +112,6 @@ vdev_probe_all_drivers(struct rte_vdev_device *dev)
 		}
 	}
 
-out:
-	free(drv_name);
 	return ret;
 }
 
diff --git a/test/test/test_link_bonding_rssconf.c b/test/test/test_link_bonding_rssconf.c
index d28db7d..dcbc9d1 100644
--- a/test/test/test_link_bonding_rssconf.c
+++ b/test/test/test_link_bonding_rssconf.c
@@ -62,7 +62,7 @@
 
 #define BONDED_DEV_NAME         ("rssconf_bond_dev")
 
-#define SLAVE_DEV_NAME_FMT      ("rssconf_slave%d")
+#define SLAVE_DEV_NAME_FMT      ("net_null%d")
 #define SLAVE_RXTX_QUEUE_FMT      ("rssconf_slave%d_q%d")
 
 #define NUM_MBUFS 8191
@@ -550,8 +550,7 @@ test_setup(void)
 		port_id = rte_eth_dev_count();
 		snprintf(name, sizeof(name), SLAVE_DEV_NAME_FMT, port_id);
 
-		retval = rte_vdev_init(name,
-			"driver=net_null,size=64,copy=0");
+		retval = rte_vdev_init(name, "size=64,copy=0");
 		TEST_ASSERT_SUCCESS(retval, "Failed to create null device '%s'\n",
 				name);
 
-- 
2.9.3