net/fm10k: support switch restart on PF

For PF 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 2587696..ead3497 100644 (file)
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -2556,6 +2556,10 @@ fm10k_dev_interrupt_handler_pf(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);
        uint32_t cause, status;
+       struct fm10k_dev_info *dev_info =
+               FM10K_DEV_PRIVATE_TO_INFO(dev->data->dev_private);
+       int status_mbx;
+       s32 err;
 
        if (hw->mac.type != fm10k_mac_pf)
                return;
@@ -2572,14 +2576,69 @@ fm10k_dev_interrupt_handler_pf(void *param)
        if (cause & FM10K_EICR_SWITCHNOTREADY)
                PMD_INIT_LOG(ERR, "INT: Switch is not ready");
 
-       if (cause & FM10K_EICR_SWITCHREADY)
+       if (cause & FM10K_EICR_SWITCHREADY) {
                PMD_INIT_LOG(INFO, "INT: Switch is ready");
+               if (dev_info->sm_down == 1) {
+                       fm10k_mbx_lock(hw);
+
+                       /* For recreating logical ports */
+                       status_mbx = hw->mac.ops.update_lport_state(hw,
+                                       hw->mac.dglort_map, MAX_LPORT_NUM, 1);
+                       if (status_mbx == FM10K_SUCCESS)
+                               PMD_INIT_LOG(INFO,
+                                       "INT: Recreated Logical port");
+                       else
+                               PMD_INIT_LOG(INFO,
+                                       "INT: Logical ports weren't recreated");
+
+                       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 */
+                       if (!(dev->data->dev_conf.rxmode.mq_mode &
+                                               ETH_MQ_RX_VMDQ_FLAG))
+                               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);
+
+                       if (!(dev->data->dev_conf.rxmode.mq_mode &
+                                               ETH_MQ_RX_VMDQ_FLAG))
+                               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);
+               }
+       }
 
        /* Handle mailbox message */
        fm10k_mbx_lock(hw);
-       hw->mbx.ops.process(hw, &hw->mbx);
+       err = hw->mbx.ops.process(hw, &hw->mbx);
        fm10k_mbx_unlock(hw);
 
+       if (err == FM10K_ERR_RESET_REQUESTED) {
+               PMD_INIT_LOG(INFO, "INT: Switch is down");
+               dev_info->sm_down = 1;
+               _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC,
+                               NULL, NULL);
+       }
+
        /* Handle SRAM error */
        if (cause & FM10K_EICR_SRAMERROR) {
                PMD_INIT_LOG(ERR, "INT: SRAM error on PEP");