net/fm10k: support switch restart on VF

For VF events indicating a change in the state of the switch manager,
the driver will restore the basic port configurations and then pass this
event to application so that the application can restore any additional
configurations if required.

In this way, once the switch manager restarts, the DPDK application can
resume its network.

Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index ead3497..7baa927 100644 (file)
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -2679,6 +2679,11 @@ fm10k_dev_interrupt_handler_vf(void *param)
 {
        struct rte_eth_dev *dev = (struct rte_eth_dev *)param;
        struct fm10k_hw *hw = FM10K_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+       struct fm10k_mbx_info *mbx = &hw->mbx;
+       struct fm10k_dev_info *dev_info =
+               FM10K_DEV_PRIVATE_TO_INFO(dev->data->dev_private);
+       const enum fm10k_mbx_state state = mbx->state;
+       int status_mbx;
 
        if (hw->mac.type != fm10k_mac_vf)
                return;
@@ -2688,6 +2693,49 @@ fm10k_dev_interrupt_handler_vf(void *param)
        hw->mbx.ops.process(hw, &hw->mbx);
        fm10k_mbx_unlock(hw);
 
+       if (state == FM10K_STATE_OPEN && mbx->state == FM10K_STATE_CONNECT) {
+               PMD_INIT_LOG(INFO, "INT: Switch has gone down");
+
+               fm10k_mbx_lock(hw);
+               hw->mac.ops.update_lport_state(hw, hw->mac.dglort_map,
+                               MAX_LPORT_NUM, 1);
+               fm10k_mbx_unlock(hw);
+
+               /* Setting reset flag */
+               dev_info->sm_down = 1;
+               _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC,
+                               NULL, NULL);
+       }
+
+       if (dev_info->sm_down == 1 &&
+                       hw->mac.dglort_map == FM10K_DGLORTMAP_ZERO) {
+               PMD_INIT_LOG(INFO, "INT: Switch has gone up");
+               fm10k_mbx_lock(hw);
+               status_mbx = hw->mac.ops.update_xcast_mode(hw,
+                               hw->mac.dglort_map, FM10K_XCAST_MODE_NONE);
+               if (status_mbx != FM10K_SUCCESS)
+                       PMD_INIT_LOG(ERR, "Failed to set XCAST mode");
+               fm10k_mbx_unlock(hw);
+
+               /* first clear the internal SW recording structure */
+               fm10k_vlan_filter_set(dev, hw->mac.default_vid, false);
+               fm10k_MAC_filter_set(dev, hw->mac.addr, false,
+                               MAIN_VSI_POOL_NUMBER);
+
+               /*
+                * Add default mac address and vlan for the logical ports that
+                * have been created, leave to the application to fully recover
+                * Rx filtering.
+                */
+               fm10k_MAC_filter_set(dev, hw->mac.addr, true,
+                               MAIN_VSI_POOL_NUMBER);
+               fm10k_vlan_filter_set(dev, hw->mac.default_vid, true);
+
+               dev_info->sm_down = 0;
+               _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC,
+                               NULL, NULL);
+       }
+
        /* Re-enable interrupt from device side */
        FM10K_WRITE_REG(hw, FM10K_VFITR(0), FM10K_ITR_AUTOMASK |
                                        FM10K_ITR_MASK_CLEAR);