[dpdk-dev] [PATCH v13 16/19] net/tap: enable hotplug on secondary process

[Qi Zhang]

Attach port from secondary should ignore devargs since the private
device is not necessary to support. Also previously, detach port on
a secondary process will mess primary process and cause the same
device can't be attached back again. A secondary process should use
rte_eth_release_port_private to release a port.

Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
Acked-by: Keith Wiles <keith.wiles at intel.com>
---
 drivers/net/tap/rte_eth_tap.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index df396bfde..a58d5ebe6 100644
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -1750,8 +1750,7 @@ rte_pmd_tap_probe(struct rte_vdev_device *dev)
 	name = rte_vdev_device_name(dev);
 	params = rte_vdev_device_args(dev);
 
-	if (rte_eal_process_type() == RTE_PROC_SECONDARY &&
-	    strlen(params) == 0) {
+	if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
 		eth_dev = rte_eth_dev_attach_secondary(name);
 		if (!eth_dev) {
 			TAP_LOG(ERR, "Failed to probe %s", name);
@@ -1759,6 +1758,7 @@ rte_pmd_tap_probe(struct rte_vdev_device *dev)
 		}
 		/* TODO: request info from primary to set up Rx and Tx */
 		eth_dev->dev_ops = &ops;
+		eth_dev->device = &dev->device;
 		rte_eth_dev_probing_finish(eth_dev);
 		return 0;
 	}
@@ -1827,12 +1827,17 @@ rte_pmd_tap_remove(struct rte_vdev_device *dev)
 {
 	struct rte_eth_dev *eth_dev = NULL;
 	struct pmd_internals *internals;
+	const char *name;
 	int i;
 
+	name = rte_vdev_device_name(dev);
 	/* find the ethdev entry */
-	eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev));
+	eth_dev = rte_eth_dev_allocated(name);
 	if (!eth_dev)
-		return 0;
+		return -ENODEV;
+
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return rte_eth_dev_release_port_private(eth_dev);
 
 	internals = eth_dev->data->dev_private;
 
-- 
2.13.6