[dpdk-dev] [PATCH v4] net/i40e: fix VF/PF port close

[Zhirun Yan]

Port reset will call i40evf_uninit_vf() to release resource. It wants
to call i40evf_dev_close() to release resources. Befort this patch,
hw->adapter_stopped was used to mark the status about start/stop and
close. So it will never call i40evf_dev_close() after stopped the port.

This patch added hw->adapter_closed flag in i40evf_dev_close() and
i40e_dev_close() to control the status of close.

Fixes: 4861cde4611601ccc9 ("i40e: new poll mode driver")

Signed-off-by: Zhirun Yan <zhirun....@intel.com>
Signed-off-by: Haiyue Wang <haiyue.w...@intel.com>
---

V4:
- Modify coding style issues.

 drivers/net/i40e/base/i40e_type.h | 1 +
 drivers/net/i40e/i40e_ethdev.c    | 5 ++++-
 drivers/net/i40e/i40e_ethdev_vf.c | 4 +++-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/net/i40e/base/i40e_type.h 
b/drivers/net/i40e/base/i40e_type.h
index 77562f24e..7ba62cc12 100644
--- a/drivers/net/i40e/base/i40e_type.h
+++ b/drivers/net/i40e/base/i40e_type.h
@@ -670,6 +670,7 @@ struct i40e_hw {
        u8 revision_id;
        u8 port;
        bool adapter_stopped;
+       bool adapter_closed;
 
        /* capabilities for entire device and PCI func */
        struct i40e_hw_capabilities dev_caps;
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 7030eb1fa..f5bd48577 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -1316,6 +1316,7 @@ eth_i40e_dev_init(struct rte_eth_dev *dev, void 
*init_params __rte_unused)
        hw->bus.device = pci_dev->addr.devid;
        hw->bus.func = pci_dev->addr.function;
        hw->adapter_stopped = 0;
+       hw->adapter_closed = 0;
 
        /*
         * Switch Tag value should not be identical to either the First Tag
@@ -1704,7 +1705,7 @@ eth_i40e_dev_uninit(struct rte_eth_dev *dev)
        if (ret)
                PMD_INIT_LOG(WARNING, "failed to free switch domain: %d", ret);
 
-       if (hw->adapter_stopped == 0)
+       if (hw->adapter_closed == 0)
                i40e_dev_close(dev);
 
        dev->dev_ops = NULL;
@@ -2523,6 +2524,8 @@ i40e_dev_close(struct rte_eth_dev *dev)
        I40E_WRITE_REG(hw, I40E_PFGEN_CTRL,
                        (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
        I40E_WRITE_FLUSH(hw);
+
+       hw->adapter_closed = 1;
 }
 
 /*
diff --git a/drivers/net/i40e/i40e_ethdev_vf.c 
b/drivers/net/i40e/i40e_ethdev_vf.c
index ae55b9b18..05dc6596b 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -1256,7 +1256,7 @@ i40evf_uninit_vf(struct rte_eth_dev *dev)
 
        PMD_INIT_FUNC_TRACE();
 
-       if (hw->adapter_stopped == 0)
+       if (hw->adapter_closed == 0)
                i40evf_dev_close(dev);
        rte_free(vf->vf_res);
        vf->vf_res = NULL;
@@ -1438,6 +1438,7 @@ i40evf_dev_init(struct rte_eth_dev *eth_dev)
        hw->bus.func = pci_dev->addr.function;
        hw->hw_addr = (void *)pci_dev->mem_resource[0].addr;
        hw->adapter_stopped = 0;
+       hw->adapter_closed = 0;
 
        if(i40evf_init_vf(eth_dev) != 0) {
                PMD_INIT_LOG(ERR, "Init vf failed");
@@ -2260,6 +2261,7 @@ i40evf_dev_close(struct rte_eth_dev *dev)
        i40e_shutdown_adminq(hw);
        i40evf_disable_irq0(hw);
        rte_eal_alarm_cancel(i40evf_dev_alarm_handler, dev);
+       hw->adapter_closed = 1;
 }
 
 /*
-- 
2.17.1