net/hns3: get link state change through mailbox

Currently, firmware adds the function of sending message to PF driver
through mailbox when the link status is changed, hns3 PMD driver can
usually recognize link state change faster through the message.

And in some extreme cases, this way is not faster than existing method
regularly updating link status by issuing the command every second in PF
driver, because of the parallel processing of mailbox and command
messages in firmware. So we reserve updating link status using timers in
PF driver, and add querying link status by issuing command to the
firmware in '.link_update' ops implementation function named
hns3_dev_link_update to solve the out of date link status.

Signed-off-by: Hongbo Zheng <zhenghongbo3@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Huisong Li <lihuisong@huawei.com>

diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 8243ade..fa0af84 100644 (file)
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -77,6 +77,7 @@ static enum hns3_reset_level hns3_get_reset_level(struct hns3_adapter *hns,
 static int hns3_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
 static int hns3_vlan_pvid_configure(struct hns3_adapter *hns, uint16_t pvid,
                                    int on);
+static int hns3_update_speed_duplex(struct rte_eth_dev *eth_dev);
 
 static void
 hns3_pf_disable_irq0(struct hns3_hw *hw)
@@ -218,6 +219,8 @@ hns3_interrupt_handler(void *param)
                hns3_schedule_reset(hns);
        } else if (event_cause == HNS3_VECTOR0_EVENT_RST)
                hns3_schedule_reset(hns);
+       else if (event_cause == HNS3_VECTOR0_EVENT_MBX)
+               hns3_dev_handle_mbx_msg(hw);
        else
                hns3_err(hw, "Received unknown event");
 
@@ -2302,6 +2305,11 @@ hns3_dev_link_update(struct rte_eth_dev *eth_dev,
        struct hns3_mac *mac = &hw->mac;
        struct rte_eth_link new_link;
 
+       if (!hns3_is_reset_pending(hns)) {
+               hns3_update_speed_duplex(eth_dev);
+               hns3_update_link_status(hw);
+       }
+
        memset(&new_link, 0, sizeof(new_link));
        switch (mac->link_speed) {
        case ETH_SPEED_NUM_10M:
@@ -3806,14 +3814,16 @@ hns3_get_mac_link_status(struct hns3_hw *hw)
        return !!link_status;
 }
 
-static void
+void
 hns3_update_link_status(struct hns3_hw *hw)
 {
        int state;
 
        state = hns3_get_mac_link_status(hw);
-       if (state != hw->mac.link_status)
+       if (state != hw->mac.link_status) {
                hw->mac.link_status = state;
+               hns3_warn(hw, "Link status change to %s!", state ? "up" : "down");
+       }
 }
 
 static void

diff --git a/drivers/net/hns3/hns3_ethdev.h b/drivers/net/hns3/hns3_ethdev.h
index e9a3fe4..004cd75 100644 (file)
--- a/drivers/net/hns3/hns3_ethdev.h
+++ b/drivers/net/hns3/hns3_ethdev.h
@@ -631,6 +631,7 @@ int hns3_dev_filter_ctrl(struct rte_eth_dev *dev,
                         enum rte_filter_op filter_op, void *arg);
 bool hns3_is_reset_pending(struct hns3_adapter *hns);
 bool hns3vf_is_reset_pending(struct hns3_adapter *hns);
+void hns3_update_link_status(struct hns3_hw *hw);
 
 static inline bool
 is_reset_pending(struct hns3_adapter *hns)

diff --git a/drivers/net/hns3/hns3_mbx.c b/drivers/net/hns3/hns3_mbx.c
index c1647af..26807bc 100644 (file)
--- a/drivers/net/hns3/hns3_mbx.c
+++ b/drivers/net/hns3/hns3_mbx.c
@@ -282,6 +282,40 @@ hns3_update_resp_position(struct hns3_hw *hw, uint32_t resp_msg)
        resp->tail = tail;
 }
 
+static void
+hns3_link_fail_parse(struct hns3_hw *hw, uint8_t link_fail_code)
+{
+       switch (link_fail_code) {
+       case HNS3_MBX_LF_NORMAL:
+               break;
+       case HNS3_MBX_LF_REF_CLOCK_LOST:
+               hns3_warn(hw, "Reference clock lost!");
+               break;
+       case HNS3_MBX_LF_XSFP_TX_DISABLE:
+               hns3_warn(hw, "SFP tx is disabled!");
+               break;
+       case HNS3_MBX_LF_XSFP_ABSENT:
+               hns3_warn(hw, "SFP is absent!");
+               break;
+       default:
+               hns3_warn(hw, "Unknown fail code:%u!", link_fail_code);
+               break;
+       }
+}
+
+static void
+hns3_handle_link_change_event(struct hns3_hw *hw,
+                             struct hns3_mbx_pf_to_vf_cmd *req)
+{
+#define LINK_STATUS_OFFSET     1
+#define LINK_FAIL_CODE_OFFSET  2
+
+       if (!req->msg[LINK_STATUS_OFFSET])
+               hns3_link_fail_parse(hw, req->msg[LINK_FAIL_CODE_OFFSET]);
+
+       hns3_update_link_status(hw);
+}
+
 void
 hns3_dev_handle_mbx_msg(struct hns3_hw *hw)
 {
@@ -335,6 +369,9 @@ hns3_dev_handle_mbx_msg(struct hns3_hw *hw)
 
                        hns3_mbx_handler(hw);
                        break;
+               case HNS3_MBX_PUSH_LINK_STATUS:
+                       hns3_handle_link_change_event(hw, req);
+                       break;
                default:
                        hns3_err(hw,
                                 "VF received unsupported(%d) mbx msg from PF",

diff --git a/drivers/net/hns3/hns3_mbx.h b/drivers/net/hns3/hns3_mbx.h
index d1a6bfe..3722c87 100644 (file)
--- a/drivers/net/hns3/hns3_mbx.h
+++ b/drivers/net/hns3/hns3_mbx.h
@@ -41,6 +41,7 @@ enum HNS3_MBX_OPCODE {
        HNS3_MBX_GET_QID_IN_PF,         /* (VF -> PF) get queue id in pf */
 
        HNS3_MBX_HANDLE_VF_TBL = 38,    /* (VF -> PF) store/clear hw cfg tbl */
+       HNS3_MBX_PUSH_LINK_STATUS = 201, /* (IMP -> PF) get port link status */
 };
 
 /* below are per-VF mac-vlan subcodes */
@@ -64,6 +65,13 @@ enum hns3_mbx_tbl_cfg_subcode {
        HNS3_MBX_VPORT_LIST_CLEAR = 0,
 };
 
+enum hns3_mbx_link_fail_subcode {
+       HNS3_MBX_LF_NORMAL = 0,
+       HNS3_MBX_LF_REF_CLOCK_LOST,
+       HNS3_MBX_LF_XSFP_TX_DISABLE,
+       HNS3_MBX_LF_XSFP_ABSENT,
+};
+
 #define HNS3_MBX_MAX_MSG_SIZE  16
 #define HNS3_MBX_MAX_RESP_DATA_SIZE    8
 #define HNS3_MBX_RING_MAP_BASIC_MSG_NUM        3