From 5f61b2c6939bb6d26393df15765bc3cb260db063 Mon Sep 17 00:00:00 2001 From: Maciej Sosnowski Date: Wed, 24 Nov 2010 17:29:46 +0000 Subject: RDMA/nes: Fix SFP+ link down detection issue with switch port disable In case of SFP+ PHY, link status check at interrupt processing can give false results. For proper link status change detection a delayed recheck is needed to give nes registers time to settle. Add a periodic link status recheck scheduled at interrupt to detect potential delayed registers state changes. Addresses: http://bugs.openfabrics.org/bugzilla/show_bug.cgi?id=2117 Signed-off-by: Maciej Sosnowski Signed-off-by: Roland Dreier --- drivers/infiniband/hw/nes/nes.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/infiniband/hw/nes/nes.h') diff --git a/drivers/infiniband/hw/nes/nes.h b/drivers/infiniband/hw/nes/nes.h index b3d145e..6fe7987 100644 --- a/drivers/infiniband/hw/nes/nes.h +++ b/drivers/infiniband/hw/nes/nes.h @@ -268,6 +268,9 @@ struct nes_device { u8 napi_isr_ran; u8 disable_rx_flow_control; u8 disable_tx_flow_control; + + struct delayed_work work; + u8 link_recheck; }; @@ -507,6 +510,7 @@ void nes_nic_ce_handler(struct nes_device *, struct nes_hw_nic_cq *); void nes_iwarp_ce_handler(struct nes_device *, struct nes_hw_cq *); int nes_destroy_cqp(struct nes_device *); int nes_nic_cm_xmit(struct sk_buff *, struct net_device *); +void nes_recheck_link_status(struct work_struct *work); /* nes_nic.c */ struct net_device *nes_netdev_init(struct nes_device *, void __iomem *); -- cgit v1.1