Message ID | 1570184954-21384-2-git-send-email-liweihang@hisilicon.com (mailing list archive) |
---|---|
State | Changes Requested |
Delegated to: | Jason Gunthorpe |
Headers | show |
Series | RDMA/hns: Add support of net device event reporting to ULP | expand |
On Fri, Oct 04, 2019 at 06:29:13PM +0800, Weihang Li wrote: > From: Lang Cheng <chenglang@huawei.com> > > Driver can notify ULP with IB event when net link down/up. > > Signed-off-by: Lang Cheng <chenglang@huawei.com> > Signed-off-by: Weihang Li <liweihang@hisilicon.com> > drivers/infiniband/hw/hns/hns_roce_device.h | 12 +++++++++ > drivers/infiniband/hw/hns/hns_roce_main.c | 40 +++++++++++++++++++++-------- > 2 files changed, 42 insertions(+), 10 deletions(-) > > diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h > index 05d375a..47c209f 100644 > +++ b/drivers/infiniband/hw/hns/hns_roce_device.h > @@ -711,6 +711,7 @@ 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]; > }; > > enum { > @@ -1135,6 +1136,17 @@ static inline void *hns_roce_buf_offset(struct hns_roce_buf *buf, int offset) > (offset & (page_size - 1)); > } > > +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; > +} > + > int 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); > void hns_roce_uar_free(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 665ce24..742a36e 100644 > +++ b/drivers/infiniband/hw/hns/hns_roce_main.c > @@ -103,10 +103,13 @@ 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]; > @@ -115,20 +118,38 @@ 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; > + /* port up/down events need send ib events */ > 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; Every roce driver shouldn't have this kind of stuff, please try to make a version to add this to the core code. Now that we have the ib_device_set_netdev() it should be possible Also, this driver should be using ib_device_set_netdev and the sketchy code in hns_roce_netdev_event() removed Jason
diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h index 05d375a..47c209f 100644 --- a/drivers/infiniband/hw/hns/hns_roce_device.h +++ b/drivers/infiniband/hw/hns/hns_roce_device.h @@ -711,6 +711,7 @@ 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]; }; enum { @@ -1135,6 +1136,17 @@ static inline void *hns_roce_buf_offset(struct hns_roce_buf *buf, int offset) (offset & (page_size - 1)); } +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; +} + int 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); void hns_roce_uar_free(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 665ce24..742a36e 100644 --- a/drivers/infiniband/hw/hns/hns_roce_main.c +++ b/drivers/infiniband/hw/hns/hns_roce_main.c @@ -103,10 +103,13 @@ 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]; @@ -115,20 +118,38 @@ 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; + /* port up/down events need send ib events */ 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; } @@ -259,8 +280,7 @@ 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;