diff options
| author | Maciej Sosnowski <maciej.sosnowski@intel.com> | 2010-11-24 17:29:46 +0000 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2011-01-16 13:23:34 -0800 |
| commit | 5f61b2c6939bb6d26393df15765bc3cb260db063 (patch) | |
| tree | 0a243de60e121a3bfc06c86d7dc76ca3540fe8c4 /drivers/infiniband/hw/nes/nes.h | |
| parent | ea623455b736d82f476460647e8b5fe5dc36f4f2 (diff) | |
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 <maciej.sosnowski@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/nes/nes.h')
| -rw-r--r-- | drivers/infiniband/hw/nes/nes.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/nes/nes.h b/drivers/infiniband/hw/nes/nes.h index b3d145e82b4c..6fe79876009e 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 *); |