[dpdk-dev] [PATCH 20/22] net/tap: enable port detach on secondary process

[Qi Zhang]

Previously, detach port on secondary process will mess primary
process and cause same device can't be attached again, by take
advantage of rte_eth_release_port_local, we can support this with
minor change.

Signed-off-by: Qi Zhang <qi.z.zh...@intel.com>
---
 drivers/net/tap/rte_eth_tap.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index 5531fe9d9..56d3b6cc9 100644
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -1759,6 +1759,7 @@ 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 +1828,24 @@ 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) {
+               /* detach device on local pprocess only */
+               if (strlen(rte_vdev_device_args(dev)) == 0)
+                       return rte_eth_dev_release_port_local(eth_dev);
+               /**
+                * else this is a private device for current process
+                * so continue with normal detach scenario
+                */
+       }
 
        internals = eth_dev->data->dev_private;
 
-- 
2.13.6