ethdev: fix port close in secondary process

Secondary process needs to close device to release process private
resources.  But secondary process should not be obliged to wait for
device stop before closing ethdev.

Fixes: febc855 ("ethdev: forbid closing started device")
Cc: stable@dpdk.org

Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

lib/ethdev/rte_ethdev.c

@@ -1576,7 +1576,13 @@ rte_eth_dev_close(uint16_t port_id)
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
 	dev = &rte_eth_devices[port_id];
 
-	if (dev->data->dev_started) {
+	/*
+	 * Secondary process needs to close device to release process private
+	 * resources. But secondary process should not be obliged to wait
+	 * for device stop before closing ethdev.
+	 */
+	if (rte_eal_process_type() == RTE_PROC_PRIMARY &&
+			dev->data->dev_started) {
 		RTE_ETHDEV_LOG(ERR, "Cannot close started device (port %u)\n",
 			       port_id);
 		return -EINVAL;