From: Lang Cheng chenglang@huawei.com
driver inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I5Z2DS
----------------------------------------------------------
Driver can notify ulp with IB event when net link down/up.
Signed-off-by: Lang Cheng chenglang@huawei.com Signed-off-by: Chengchang Tang tangchengchang@huawei.com Reviewed-by: Yangyang Li liyangyang20@huawei.com Reviewed-by: Yue Haibing yuehaibing@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/infiniband/hw/hns/hns_roce_device.h | 12 ++++++ drivers/infiniband/hw/hns/hns_roce_main.c | 45 +++++++++++++++------ 2 files changed, 45 insertions(+), 12 deletions(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h index 7a945cefd5a0..51e59084f875 100644 --- a/drivers/infiniband/hw/hns/hns_roce_device.h +++ b/drivers/infiniband/hw/hns/hns_roce_device.h @@ -640,6 +640,7 @@ struct hns_roce_ib_iboe { struct net_device *netdevs[HNS_ROCE_MAX_PORTS]; struct notifier_block nb; u8 phy_port[HNS_ROCE_MAX_PORTS]; + enum ib_port_state port_state[HNS_ROCE_MAX_PORTS]; };
struct hns_roce_ceqe { @@ -1095,6 +1096,17 @@ static inline u8 get_tclass(const struct ib_global_route *grh) grh->traffic_class >> DSCP_SHIFT : grh->traffic_class; }
+static inline u8 to_rdma_port_num(u8 phy_port_num) +{ + return phy_port_num + 1; +} + +static inline enum ib_port_state get_port_state(struct net_device *net_dev) +{ + return (netif_running(net_dev) && netif_carrier_ok(net_dev)) ? + IB_PORT_ACTIVE : IB_PORT_DOWN; +} + void hns_roce_init_uar_table(struct hns_roce_dev *dev); int hns_roce_uar_alloc(struct hns_roce_dev *dev, struct hns_roce_uar *uar);
diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c index 4fb8c4488195..cdb6def7923e 100644 --- a/drivers/infiniband/hw/hns/hns_roce_main.c +++ b/drivers/infiniband/hw/hns/hns_roce_main.c @@ -89,10 +89,13 @@ static int hns_roce_del_gid(const struct ib_gid_attr *attr, void **context) }
static int handle_en_event(struct hns_roce_dev *hr_dev, u8 port, - unsigned long event) + unsigned long dev_event) { struct device *dev = hr_dev->dev; + enum ib_port_state port_state; struct net_device *netdev; + struct ib_event event; + unsigned long flags; int ret = 0;
netdev = hr_dev->iboe.netdevs[port]; @@ -101,20 +104,38 @@ static int handle_en_event(struct hns_roce_dev *hr_dev, u8 port, return -ENODEV; }
- switch (event) { - case NETDEV_UP: - case NETDEV_CHANGE: + switch (dev_event) { case NETDEV_REGISTER: case NETDEV_CHANGEADDR: ret = hns_roce_set_mac(hr_dev, port, netdev->dev_addr); break; + case NETDEV_UP: + case NETDEV_CHANGE: + ret = hns_roce_set_mac(hr_dev, port, netdev->dev_addr); + if (ret) + return ret; + fallthrough; case NETDEV_DOWN: - /* - * In v1 engine, only support all ports closed together. - */ + port_state = get_port_state(netdev); + + spin_lock_irqsave(&hr_dev->iboe.lock, flags); + if (hr_dev->iboe.port_state[port] == port_state) { + spin_unlock_irqrestore(&hr_dev->iboe.lock, flags); + return NOTIFY_DONE; + } + hr_dev->iboe.port_state[port] = port_state; + spin_unlock_irqrestore(&hr_dev->iboe.lock, flags); + + event.device = &hr_dev->ib_dev; + event.event = (port_state == IB_PORT_ACTIVE) ? + IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; + event.element.port_num = to_rdma_port_num(port); + ib_dispatch_event(&event); + break; + case NETDEV_UNREGISTER: break; default: - dev_dbg(dev, "NETDEV event = 0x%x!\n", (u32)(event)); + dev_dbg(dev, "NETDEV event = 0x%x!\n", (u32)(dev_event)); break; }
@@ -151,6 +172,8 @@ static int hns_roce_setup_mtu_mac(struct hns_roce_dev *hr_dev) u8 i;
for (i = 0; i < hr_dev->caps.num_ports; i++) { + hr_dev->iboe.port_state[i] = IB_PORT_DOWN; + ret = hns_roce_set_mac(hr_dev, i, hr_dev->iboe.netdevs[i]->dev_addr); if (ret) @@ -245,9 +268,7 @@ static int hns_roce_query_port(struct ib_device *ib_dev, u8 port_num,
mtu = iboe_get_mtu(net_dev->mtu); props->active_mtu = mtu ? min(props->max_mtu, mtu) : IB_MTU_256; - props->state = netif_running(net_dev) && netif_carrier_ok(net_dev) ? - IB_PORT_ACTIVE : - IB_PORT_DOWN; + props->state = get_port_state(net_dev); props->phys_state = props->state == IB_PORT_ACTIVE ? IB_PORT_PHYS_STATE_LINK_UP : IB_PORT_PHYS_STATE_DISABLED; @@ -439,7 +460,7 @@ static int hns_roce_mmap(struct ib_ucontext *uctx, struct vm_area_struct *vma) phys_addr_t pfn; pgprot_t prot; int ret; - + rdma_entry = rdma_user_mmap_entry_get_pgoff(uctx, vma->vm_pgoff); if (!rdma_entry) return -EINVAL;