aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/hw/nes/nes_verbs.c
diff options
context:
space:
mode:
authorMaciej Sosnowski <maciej.sosnowski@intel.com>2010-11-24 12:29:38 -0500
committerRoland Dreier <rolandd@cisco.com>2011-01-16 16:23:34 -0500
commitea623455b736d82f476460647e8b5fe5dc36f4f2 (patch)
treec1e2343adc9b2e8f7e11d58dc561370905d60bb8 /drivers/infiniband/hw/nes/nes_verbs.c
parent2a4c97ead4b375a64063523210939b87ad225b85 (diff)
RDMA/nes: Generate IB_EVENT_PORT_ERR/PORT_ACTIVE events
Depending on link state change, IB_EVENT_PORT_ERR or IB_EVENT_PORT_ACTIVE should be generated when handling MAC interrupts. Plugging in a cable happens to result in series of interrupts changing driver's link state a number of times before finally staying at link up (e.g. link up, link down, link up, link down, ..., link up). To prevent sending series of redundant IB_EVENT_PORT_ACTIVE and IB_EVENT_PORT_ERR events, we use a timer to debounce them in nes_port_ibevent(). 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_verbs.c')
-rw-r--r--drivers/infiniband/hw/nes/nes_verbs.c37
1 files changed, 36 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index 99933e4e48f..26d8018c0a7 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -3936,6 +3936,30 @@ struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3936 return nesibdev; 3936 return nesibdev;
3937} 3937}
3938 3938
3939
3940/**
3941 * nes_handle_delayed_event
3942 */
3943static void nes_handle_delayed_event(unsigned long data)
3944{
3945 struct nes_vnic *nesvnic = (void *) data;
3946
3947 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3948 struct ib_event event;
3949
3950 event.device = &nesvnic->nesibdev->ibdev;
3951 if (!event.device)
3952 goto stop_timer;
3953 event.event = nesvnic->delayed_event;
3954 event.element.port_num = nesvnic->logical_port + 1;
3955 ib_dispatch_event(&event);
3956 }
3957
3958stop_timer:
3959 nesvnic->event_timer.function = NULL;
3960}
3961
3962
3939void nes_port_ibevent(struct nes_vnic *nesvnic) 3963void nes_port_ibevent(struct nes_vnic *nesvnic)
3940{ 3964{
3941 struct nes_ib_device *nesibdev = nesvnic->nesibdev; 3965 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
@@ -3944,7 +3968,18 @@ void nes_port_ibevent(struct nes_vnic *nesvnic)
3944 event.device = &nesibdev->ibdev; 3968 event.device = &nesibdev->ibdev;
3945 event.element.port_num = nesvnic->logical_port + 1; 3969 event.element.port_num = nesvnic->logical_port + 1;
3946 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 3970 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3947 ib_dispatch_event(&event); 3971
3972 if (!nesvnic->event_timer.function) {
3973 ib_dispatch_event(&event);
3974 nesvnic->last_dispatched_event = event.event;
3975 nesvnic->event_timer.function = nes_handle_delayed_event;
3976 nesvnic->event_timer.data = (unsigned long) nesvnic;
3977 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3978 add_timer(&nesvnic->event_timer);
3979 } else {
3980 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3981 }
3982 nesvnic->delayed_event = event.event;
3948} 3983}
3949 3984
3950 3985