[PATCH v2] net/ice: fix ice dcf control thread crash

[Ke Zhang]

The control thread accesses the hardware resources after the
resources were released, resulting in a segment error.

This commit fixes the bug by exiting thread before resource released.

Signed-off-by: Ke Zhang <ke1x.zh...@intel.com>
---
v2: add pthread_exit() for windows
---
 drivers/net/ice/ice_dcf.c         | 4 ++++
 lib/eal/windows/include/pthread.h | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/drivers/net/ice/ice_dcf.c b/drivers/net/ice/ice_dcf.c
index 1c3d22ae0f..e58908caf5 100644
--- a/drivers/net/ice/ice_dcf.c
+++ b/drivers/net/ice/ice_dcf.c
@@ -543,6 +543,8 @@ ice_dcf_handle_vsi_update_event(struct ice_dcf_hw *hw)
        ice_dcf_disable_irq0(hw);
 
        for (;;) {
+               if (hw->vc_event_msg_cb == NULL)
+                       pthread_exit(NULL);
                if (ice_dcf_get_vf_resource(hw) == 0 &&
                    ice_dcf_get_vf_vsi_map(hw) >= 0) {
                        err = 0;
@@ -760,6 +762,8 @@ ice_dcf_uninit_hw(struct rte_eth_dev *eth_dev, struct 
ice_dcf_hw *hw)
        rte_intr_callback_unregister(intr_handle,
                                     ice_dcf_dev_interrupt_handler, hw);
 
+       hw->vc_event_msg_cb = NULL;
+
        ice_dcf_mode_disable(hw);
        iavf_shutdown_adminq(&hw->avf);
 
diff --git a/lib/eal/windows/include/pthread.h 
b/lib/eal/windows/include/pthread.h
index 27fd2cca52..f0068ebd73 100644
--- a/lib/eal/windows/include/pthread.h
+++ b/lib/eal/windows/include/pthread.h
@@ -149,6 +149,11 @@ pthread_detach(__rte_unused pthread_t thread)
        return 0;
 }
 
+static inline void
+pthread_exit(__rte_unused void *__retval)
+{
+}
+
 static inline int
 pthread_join(__rte_unused pthread_t thread,
        __rte_unused void **value_ptr)
-- 
2.25.1