[dpdk-dev] [PATCH v2 2/4] net/fm10k: support switch restart on PF

[Xiao Wang <xiao.w.wang@intel.com>]

For events indicating the 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>
---
v2:
- Fix line over 90 characters.
---
 drivers/net/fm10k/fm10k_ethdev.c | 54 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 52 insertions(+), 2 deletions(-)

diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index 2587696..c71c0fc 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -2556,6 +2556,10 @@ static void fm10k_MAC_filter_set(struct rte_eth_dev *dev,
 	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 +2576,60 @@ static void fm10k_MAC_filter_set(struct rte_eth_dev *dev,
 	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");
-- 
1.8.3.1