[dpdk-dev] [PATCH v2 3/5] net/ice: support DCF link status event handling

[Ting Xu <ting.xu@intel.com>]

When link status changes, DCF will receive virtchnl PF event message.
Add support to handle this event, change link status and update link
info.

Signed-off-by: Ting Xu <ting.xu@intel.com>
---
 drivers/net/ice/ice_dcf.h        |  6 ++++
 drivers/net/ice/ice_dcf_ethdev.c | 54 ++++++++++++++++++++++++++++++--
 drivers/net/ice/ice_dcf_parent.c | 51 ++++++++++++++++++++++++++++++
 3 files changed, 108 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ice/ice_dcf.h b/drivers/net/ice/ice_dcf.h
index 0cb90b5e9f..587093b909 100644
--- a/drivers/net/ice/ice_dcf.h
+++ b/drivers/net/ice/ice_dcf.h
@@ -60,6 +60,10 @@ struct ice_dcf_hw {
 	uint16_t nb_msix;
 	uint16_t rxq_map[16];
 	struct virtchnl_eth_stats eth_stats_offset;
+
+	/* Link status */
+	bool link_up;
+	uint32_t link_speed;
 };
 
 int ice_dcf_execute_virtchnl_cmd(struct ice_dcf_hw *hw,
@@ -77,5 +81,7 @@ int ice_dcf_disable_queues(struct ice_dcf_hw *hw);
 int ice_dcf_query_stats(struct ice_dcf_hw *hw,
 			struct virtchnl_eth_stats *pstats);
 int ice_dcf_add_del_all_mac_addr(struct ice_dcf_hw *hw, bool add);
+int ice_dcf_link_update(struct rte_eth_dev *dev,
+		    __rte_unused int wait_to_complete);
 
 #endif /* _ICE_DCF_H_ */
diff --git a/drivers/net/ice/ice_dcf_ethdev.c b/drivers/net/ice/ice_dcf_ethdev.c
index b937cbbb03..819c671c2d 100644
--- a/drivers/net/ice/ice_dcf_ethdev.c
+++ b/drivers/net/ice/ice_dcf_ethdev.c
@@ -880,11 +880,59 @@ ice_dcf_dev_close(struct rte_eth_dev *dev)
 	return 0;
 }
 
-static int
-ice_dcf_link_update(__rte_unused struct rte_eth_dev *dev,
+int
+ice_dcf_link_update(struct rte_eth_dev *dev,
 		    __rte_unused int wait_to_complete)
 {
-	return 0;
+	struct ice_dcf_adapter *ad = dev->data->dev_private;
+	struct ice_dcf_hw *hw = &ad->real_hw;
+	struct rte_eth_link new_link;
+
+	memset(&new_link, 0, sizeof(new_link));
+
+	/* Only read status info stored in VF, and the info is updated
+	 * when receive LINK_CHANGE event from PF by virtchnl.
+	 */
+	switch (hw->link_speed) {
+	case 10:
+		new_link.link_speed = ETH_SPEED_NUM_10M;
+		break;
+	case 100:
+		new_link.link_speed = ETH_SPEED_NUM_100M;
+		break;
+	case 1000:
+		new_link.link_speed = ETH_SPEED_NUM_1G;
+		break;
+	case 10000:
+		new_link.link_speed = ETH_SPEED_NUM_10G;
+		break;
+	case 20000:
+		new_link.link_speed = ETH_SPEED_NUM_20G;
+		break;
+	case 25000:
+		new_link.link_speed = ETH_SPEED_NUM_25G;
+		break;
+	case 40000:
+		new_link.link_speed = ETH_SPEED_NUM_40G;
+		break;
+	case 50000:
+		new_link.link_speed = ETH_SPEED_NUM_50G;
+		break;
+	case 100000:
+		new_link.link_speed = ETH_SPEED_NUM_100G;
+		break;
+	default:
+		new_link.link_speed = ETH_SPEED_NUM_NONE;
+		break;
+	}
+
+	new_link.link_duplex = ETH_LINK_FULL_DUPLEX;
+	new_link.link_status = hw->link_up ? ETH_LINK_UP :
+					     ETH_LINK_DOWN;
+	new_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
+				ETH_LINK_SPEED_FIXED);
+
+	return rte_eth_linkstatus_set(dev, &new_link);
 }
 
 /* Add UDP tunneling port */
diff --git a/drivers/net/ice/ice_dcf_parent.c b/drivers/net/ice/ice_dcf_parent.c
index 1d7aa8bc87..0c0706316d 100644
--- a/drivers/net/ice/ice_dcf_parent.c
+++ b/drivers/net/ice/ice_dcf_parent.c
@@ -178,6 +178,44 @@ start_vsi_reset_thread(struct ice_dcf_hw *dcf_hw, bool vfr, uint16_t vf_id)
 	}
 }
 
+static uint32_t
+ice_dcf_convert_link_speed(enum virtchnl_link_speed virt_link_speed)
+{
+	uint32_t speed;
+
+	switch (virt_link_speed) {
+	case VIRTCHNL_LINK_SPEED_100MB:
+		speed = 100;
+		break;
+	case VIRTCHNL_LINK_SPEED_1GB:
+		speed = 1000;
+		break;
+	case VIRTCHNL_LINK_SPEED_10GB:
+		speed = 10000;
+		break;
+	case VIRTCHNL_LINK_SPEED_40GB:
+		speed = 40000;
+		break;
+	case VIRTCHNL_LINK_SPEED_20GB:
+		speed = 20000;
+		break;
+	case VIRTCHNL_LINK_SPEED_25GB:
+		speed = 25000;
+		break;
+	case VIRTCHNL_LINK_SPEED_2_5GB:
+		speed = 2500;
+		break;
+	case VIRTCHNL_LINK_SPEED_5GB:
+		speed = 5000;
+		break;
+	default:
+		speed = 0;
+		break;
+	}
+
+	return speed;
+}
+
 void
 ice_dcf_handle_pf_event_msg(struct ice_dcf_hw *dcf_hw,
 			    uint8_t *msg, uint16_t msglen)
@@ -196,6 +234,19 @@ ice_dcf_handle_pf_event_msg(struct ice_dcf_hw *dcf_hw,
 		break;
 	case VIRTCHNL_EVENT_LINK_CHANGE:
 		PMD_DRV_LOG(DEBUG, "VIRTCHNL_EVENT_LINK_CHANGE event");
+		dcf_hw->link_up = pf_msg->event_data.link_event.link_status;
+		if (dcf_hw->vf_res->vf_cap_flags &
+			VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
+			dcf_hw->link_speed =
+				pf_msg->event_data.link_event_adv.link_speed;
+		} else {
+			enum virtchnl_link_speed speed;
+			speed = pf_msg->event_data.link_event.link_speed;
+			dcf_hw->link_speed = ice_dcf_convert_link_speed(speed);
+		}
+		ice_dcf_link_update(dcf_hw->eth_dev, 0);
+		rte_eth_dev_callback_process(dcf_hw->eth_dev,
+			RTE_ETH_EVENT_INTR_LSC, NULL);
 		break;
 	case VIRTCHNL_EVENT_PF_DRIVER_CLOSE:
 		PMD_DRV_LOG(DEBUG, "VIRTCHNL_EVENT_PF_DRIVER_CLOSE event");
-- 
2.25.1