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From: Qi Zhang <qi.z.zhang@intel.com>
To: thomas@monjalon.net,
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Cc: konstantin.ananyev@intel.com, dev@dpdk.org, bruce.richardson@intel.com,
ferruh.yigit@intel.com, benjamin.h.shelton@intel.com,
narender.vangati@intel.com, Qi Zhang <qi.z.zhang@intel.com>
Date: Fri, 6 Jul 2018 22:18:23 +0800
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<20180706141826.204044-1-qi.z.zhang@intel.com>
Subject: [dpdk-dev] [PATCH v9 16/19] net/tap: enable port detach on
secondary process
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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@intel.com>
Acked-by: Keith Wiles <keith.wiles@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 df396bfde..bb5f20b01 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_private(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