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net/vmxnet3: fix hot-unplug

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The vmxnet3 driver can't call back into dev_close(), and possibly
dev_stop(), in dev_uninit().  When dev_uninit() is called, anything
that those routines would want to clean up has already been released.
Further, for complete cleanup, it is necessary to release any of the
queue resources during dev_close().
This allows a vmxnet3 device to be hot-unplugged without leaking
queues.
Also set RTE_ETH_DEV_CLOSE_REMOVE on close so that the port resources
can be deallocated.
Return EBUSY if remove is called before stop.

Fixes: dfaff37fc4 ("vmxnet3: import new vmxnet3 poll mode driver implementation")
Cc: stable@dpdk.org

Signed-off-by: Brian Russell <brussell@brocade.com>
Signed-off-by: Luca Boccassi <bluca@debian.org>
This commit is contained in:
Luca Boccassi 2018-10-31 18:39:44 +00:00 committed by Thomas Monjalon
parent f9b0d1902c
commit 6c99085d97
1 changed files with 36 additions and 7 deletions
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43
drivers/net/vmxnet3/vmxnet3_ethdev.c
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@ -360,8 +360,10 @@ eth_vmxnet3_dev_uninit(struct rte_eth_dev *eth_dev)
if (rte_eal_process_type() != RTE_PROC_PRIMARY)
return 0;
if (hw->adapter_stopped == 0)
vmxnet3_dev_close(eth_dev);
if (hw->adapter_stopped == 0) {
PMD_INIT_LOG(DEBUG, "Device has not been closed.");
return -EBUSY;
}
eth_dev->dev_ops = NULL;
eth_dev->rx_pkt_burst = NULL;
@ -805,7 +807,7 @@ vmxnet3_dev_stop(struct rte_eth_dev *dev)
PMD_INIT_FUNC_TRACE();
if (hw->adapter_stopped == 1) {
PMD_INIT_LOG(DEBUG, "Device already closed.");
PMD_INIT_LOG(DEBUG, "Device already stopped.");
return;
}
@ -829,7 +831,6 @@ vmxnet3_dev_stop(struct rte_eth_dev *dev)
/* reset the device */
VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
PMD_INIT_LOG(DEBUG, "Device reset.");
hw->adapter_stopped = 0;
vmxnet3_dev_clear_queues(dev);
@ -839,6 +840,30 @@ vmxnet3_dev_stop(struct rte_eth_dev *dev)
link.link_speed = ETH_SPEED_NUM_10G;
link.link_autoneg = ETH_LINK_FIXED;
rte_eth_linkstatus_set(dev, &link);
hw->adapter_stopped = 1;
}
static void
vmxnet3_free_queues(struct rte_eth_dev *dev)
{
int i;
PMD_INIT_FUNC_TRACE();
for (i = 0; i < dev->data->nb_rx_queues; i++) {
void *rxq = dev->data->rx_queues[i];
vmxnet3_dev_rx_queue_release(rxq);
}
dev->data->nb_rx_queues = 0;
for (i = 0; i < dev->data->nb_tx_queues; i++) {
void *txq = dev->data->tx_queues[i];
vmxnet3_dev_tx_queue_release(txq);
}
dev->data->nb_tx_queues = 0;
}
/*
@ -847,12 +872,16 @@ vmxnet3_dev_stop(struct rte_eth_dev *dev)
static void
vmxnet3_dev_close(struct rte_eth_dev *dev)
{
struct vmxnet3_hw *hw = dev->data->dev_private;
PMD_INIT_FUNC_TRACE();
vmxnet3_dev_stop(dev);
hw->adapter_stopped = 1;
vmxnet3_free_queues(dev);
/*
* flag to rte_eth_dev_close() that it should release the port resources
* (calling rte_eth_dev_release_port()) in addition to closing it.
*/
dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE;
}
static void