net/hns3: refactor PF LSC event report

[dpdk.git] / drivers / net / hns3 / hns3_intr.c

diff --git a/drivers/net/hns3/hns3_intr.c b/drivers/net/hns3/hns3_intr.c
index c8d6137..668f598 100644 (file)
--- a/drivers/net/hns3/hns3_intr.c
+++ b/drivers/net/hns3/hns3_intr.c
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2018-2019 HiSilicon Limited.
+ * Copyright(c) 2018-2021 HiSilicon Limited.
  */
 
 #include <rte_alarm.h>
@@ -2614,3 +2614,33 @@ hns3_reset_abort(struct hns3_adapter *hns)
                         reset_string[hw->reset.level], tv.tv_sec, tv.tv_usec);
        }
 }
+
+static void
+hns3_report_lse(void *arg)
+{
+       struct rte_eth_dev *dev = (struct rte_eth_dev *)arg;
+       struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+       if (hw->adapter_state == HNS3_NIC_STARTED)
+               rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
+}
+
+void
+hns3_start_report_lse(struct rte_eth_dev *dev)
+{
+#define DELAY_REPORT_LSE_US    1
+       /*
+        * When this function called, the context may hold hns3_hw.lock, if
+        * report lse right now, in some application such as bonding, it will
+        * trigger call driver's ops which may acquire hns3_hw.lock again, so
+        * lead to deadlock.
+        * Here we use delay report to avoid the deadlock.
+        */
+       rte_eal_alarm_set(DELAY_REPORT_LSE_US, hns3_report_lse, dev);
+}
+
+void
+hns3_stop_report_lse(struct rte_eth_dev *dev)
+{
+       rte_eal_alarm_cancel(hns3_report_lse, dev);
+}