From: Yuyu Li Date: Fri, 22 Nov 2024 10:53:08 +0000 (+0800) Subject: RDMA/hns: Support fast path for link-down events dispatching X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=20b6d8a7b9bdced0c5f9a4887dbf123dd8e334c0;p=linux.git RDMA/hns: Support fast path for link-down events dispatching 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 Signed-off-by: Junxian Huang Signed-off-by: Leon Romanovsky --- 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, };