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[RFC,12/12] RDMA/hns: Support fast path for link-down events dispatching

Message ID 20241122105308.2150505-13-huangjunxian6@hisilicon.com (mailing list archive)
State New
Headers show
Series RDMA: Support link status events dispatching in ib_core | expand

Commit Message

Junxian Huang Nov. 22, 2024, 10:53 a.m. UTC 
From: Yuyu Li <liyuyu6@huawei.com>

hns3 NIC driver can directly notify the RoCE driver about link status
events bypassing the netdev notifier. This can provide more timely
event dispatching for ULPs.

Signed-off-by: Yuyu Li <liyuyu6@huawei.com>
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
---
 drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)
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Patch

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 697b17cca02e..5c911d1def03 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -7178,9 +7178,22 @@  static int hns_roce_hw_v2_reset_notify(struct hnae3_handle *handle,
 	return ret;
 }
 
+static void hns_roce_hw_v2_link_status_change(struct hnae3_handle *handle,
+					      bool linkup)
+{
+	struct hns_roce_dev *hr_dev = (struct hns_roce_dev *)handle->priv;
+	struct net_device *netdev = handle->rinfo.netdev;
+
+	if (linkup || !hr_dev)
+		return;
+
+	ib_dispatch_port_state_event(&hr_dev->ib_dev, netdev);
+}
+
 static const struct hnae3_client_ops hns_roce_hw_v2_ops = {
 	.init_instance = hns_roce_hw_v2_init_instance,
 	.uninit_instance = hns_roce_hw_v2_uninit_instance,
+	.link_status_change = hns_roce_hw_v2_link_status_change,
 	.reset_notify = hns_roce_hw_v2_reset_notify,
 };