Hi Luca,
When eth_vmxnet3_dev_uninit() is called, is it guaranteed that
vmxnet3_dev_close/ vmxnet3_dev_stop must have been called? I'm not familiar
with the hot-plug procedure, so just wonder if there is any chance that
eth_vmxnet3_dev_uninit() is called without calling vmxnet3_dev_close/
vmxnet3_dev_stop.
Thanks,
Louis
On 8/16/18, 6:51 AM, "dev on behalf of Luca Boccassi" <dev-boun...@dpdk.org on
behalf of bl...@debian.org> wrote:
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.
Fixes: dfaff37fc46d ("vmxnet3: import new vmxnet3 poll mode driver
implementation")
Cc: sta...@dpdk.org
Signed-off-by: Brian Russell <bruss...@brocade.com>
Signed-off-by: Luca Boccassi <bl...@debian.org>
---
drivers/net/vmxnet3/vmxnet3_ethdev.c | 36 ++++++++++++++++++++--------
1 file changed, 26 insertions(+), 10 deletions(-)
diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.c
b/drivers/net/vmxnet3/vmxnet3_ethdev.c
index 2613cd1358..b5d4be5e24 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethdev.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethdev.c
@@ -348,16 +348,11 @@ eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev)
static int
eth_vmxnet3_dev_uninit(struct rte_eth_dev *eth_dev)
{
- struct vmxnet3_hw *hw = eth_dev->data->dev_private;
-
PMD_INIT_FUNC_TRACE();
if (rte_eal_process_type() != RTE_PROC_PRIMARY)
return 0;
- if (hw->adapter_stopped == 0)
- vmxnet3_dev_close(eth_dev);
-
eth_dev->dev_ops = NULL;
eth_dev->rx_pkt_burst = NULL;
eth_dev->tx_pkt_burst = NULL;
@@ -803,7 +798,7 @@ 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;
}
@@ -827,7 +822,6 @@ 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);
@@ -837,6 +831,30 @@ 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;
}
/*
@@ -845,12 +863,10 @@ 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);
}
static void
--
2.18.0
