[dpdk-dev] [PATCH] ethdev: revert use device name from device structure

[Ferruh Yigit <ferruh.yigit@intel.com>]

This reverts commit a1e7c17555e8f77d520ba5f06ed26c00e77a2bd1.

Original commit assumes there is 1:1 mapping between physical device and
ethdev port, so that device name can be used per port instead of ethdev
name field.

But one physical device may have multiple ethdev ports and each port
needs its own unique name.

One issue reported here:
http://dpdk.org/ml/archives/users/2017-September/002484.html

So reverting back the commit to continue using ethdev name field per
port.

Reported-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
 lib/librte_ether/rte_ethdev.c | 25 ++++++++++---------------
 1 file changed, 10 insertions(+), 15 deletions(-)

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 6016fd9be..c944b9fb1 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -177,11 +177,9 @@ rte_eth_dev_allocated(const char *name)
 	unsigned i;
 
 	for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
-		if (rte_eth_devices[i].state == RTE_ETH_DEV_ATTACHED &&
-				rte_eth_devices[i].device) {
-			if (!strcmp(rte_eth_devices[i].device->name, name))
-				return &rte_eth_devices[i];
-		}
+		if ((rte_eth_devices[i].state == RTE_ETH_DEV_ATTACHED) &&
+		    strcmp(rte_eth_devices[i].data->name, name) == 0)
+			return &rte_eth_devices[i];
 	}
 	return NULL;
 }
@@ -318,7 +316,7 @@ rte_eth_dev_count(void)
 int
 rte_eth_dev_get_name_by_port(uint8_t port_id, char *name)
 {
-	const char *tmp;
+	char *tmp;
 
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
 
@@ -329,7 +327,7 @@ rte_eth_dev_get_name_by_port(uint8_t port_id, char *name)
 
 	/* shouldn't check 'rte_eth_devices[i].data',
 	 * because it might be overwritten by VDEV PMD */
-	tmp = rte_eth_devices[port_id].device->name;
+	tmp = rte_eth_dev_data[port_id].name;
 	strcpy(name, tmp);
 	return 0;
 }
@@ -337,7 +335,6 @@ rte_eth_dev_get_name_by_port(uint8_t port_id, char *name)
 int
 rte_eth_dev_get_port_by_name(const char *name, uint8_t *port_id)
 {
-	int ret;
 	int i;
 
 	if (name == NULL) {
@@ -346,13 +343,11 @@ rte_eth_dev_get_port_by_name(const char *name, uint8_t *port_id)
 	}
 
 	RTE_ETH_FOREACH_DEV(i) {
-		if (!rte_eth_devices[i].device)
-			continue;
+		if (!strncmp(name,
+			rte_eth_dev_data[i].name, strlen(name))) {
 
-		ret = strncmp(name, rte_eth_devices[i].device->name,
-				strlen(name));
-		if (ret == 0) {
 			*port_id = i;
+
 			return 0;
 		}
 	}
@@ -435,8 +430,8 @@ rte_eth_dev_detach(uint8_t port_id, char *name)
 	if (rte_eth_dev_is_detachable(port_id))
 		goto err;
 
-	snprintf(name, RTE_DEV_NAME_MAX_LEN, "%s",
-		 rte_eth_devices[port_id].device->name);
+	snprintf(name, sizeof(rte_eth_devices[port_id].data->name),
+		 "%s", rte_eth_devices[port_id].data->name);
 
 	ret = rte_eal_dev_detach(rte_eth_devices[port_id].device);
 	if (ret < 0)
-- 
2.13.5