[dpdk-dev] [PATCH v2] net/ice: retry getting VF VSI map after it fails

[dapengx . yu]

From: Dapeng Yu <dapengx...@intel.com>

The request of getting VF VSI map request may fail when DCF is busy,
this patch adds retry mechanism to make it able to succeed.

Fixes: b09d34ac8584 ("net/ice: fix flow redirector")
Cc: sta...@dpdk.org

Signed-off-by: Dapeng Yu <dapengx...@intel.com>
---
V2:
* Remove goto 
---
 drivers/net/ice/ice_dcf.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ice/ice_dcf.c b/drivers/net/ice/ice_dcf.c
index 38e9a84698..c9c01a14e3 100644
--- a/drivers/net/ice/ice_dcf.c
+++ b/drivers/net/ice/ice_dcf.c
@@ -534,15 +534,26 @@ int
 ice_dcf_handle_vsi_update_event(struct ice_dcf_hw *hw)
 {
        struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(hw->eth_dev);
-       int err = 0;
+       int i = 0;
+       int err = -1;
 
        rte_spinlock_lock(&hw->vc_cmd_send_lock);
 
        rte_intr_disable(&pci_dev->intr_handle);
        ice_dcf_disable_irq0(hw);
 
-       if (ice_dcf_get_vf_resource(hw) || ice_dcf_get_vf_vsi_map(hw) < 0)
-               err = -1;
+       for (;;) {
+               if (ice_dcf_get_vf_resource(hw) == 0 &&
+                   ice_dcf_get_vf_vsi_map(hw) >= 0) {
+                       err = 0;
+                       break;
+               }
+
+               if (++i >= ICE_DCF_ARQ_MAX_RETRIES)
+                       break;
+
+               rte_delay_ms(ICE_DCF_ARQ_CHECK_TIME);
+       }
 
        rte_intr_enable(&pci_dev->intr_handle);
        ice_dcf_enable_irq0(hw);
-- 
2.27.0