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IB/ehca: Filter PATH_MIG events if QP was never armed 

Certain firmware versions sometimes cause spurious PATH_MIG events to
occur during QP creation.  Filter these events by making sure PATH_MIG
events are only handed down when they actually make sense (i.e. when
the QP has been armed at least once).

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Joachim Fenkes 2008-07-22 14:18:07 -07:00 committed by Roland Dreier
parent d35cb360c2
commit 5b673b71c8
3 changed files with 7 additions and 0 deletions
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1
drivers/infiniband/hw/ehca/ehca_classes.h
View File

@ -194,6 +194,7 @@ struct ehca_qp {
u32 packet_count;
atomic_t nr_events; /* events seen */
wait_queue_head_t wait_completion;
int mig_armed;
};
#define IS_SRQ(qp) (qp->ext_type == EQPT_SRQ)

4
drivers/infiniband/hw/ehca/ehca_irq.c
View File

@ -178,6 +178,10 @@ static void dispatch_qp_event(struct ehca_shca *shca, struct ehca_qp *qp,
{
struct ib_event event;
/* PATH_MIG without the QP ever having been armed is false alarm */
if (event_type == IB_EVENT_PATH_MIG && !qp->mig_armed)
return;
event.device = &shca->ib_device;
event.event = event_type;

2
drivers/infiniband/hw/ehca/ehca_qp.c
View File

@ -1460,6 +1460,8 @@ static int internal_modify_qp(struct ib_qp *ibqp,
goto modify_qp_exit2;
}
mqpcb->path_migration_state = attr->path_mig_state + 1;
if (attr->path_mig_state == IB_MIG_REARM)
my_qp->mig_armed = 1;
update_mask |=
EHCA_BMASK_SET(MQPCB_MASK_PATH_MIGRATION_STATE, 1);
}