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IB/hfi1: Add rvt_rnr_tbl_to_usec function

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Return usec from an index into ib_rvt_rnr_table.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Don Hiatt 2017-02-08 05:28:19 -08:00 committed by Doug Ledford
parent db069ecb5d
commit 881fccb864
2 changed files with 12 additions and 0 deletions
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11
drivers/infiniband/sw/rdmavt/qp.c
View file

@ -1954,6 +1954,17 @@ void rvt_rc_error(struct rvt_qp *qp, enum ib_wc_status err)
}
EXPORT_SYMBOL(rvt_rc_error);
/*
* rvt_rnr_tbl_to_usec - return index into ib_rvt_rnr_table
* @index - the index
* return usec from an index into ib_rvt_rnr_table
*/
unsigned long rvt_rnr_tbl_to_usec(u32 index)
{
return ib_rvt_rnr_table[(index & RVT_AETH_CREDIT_MASK)];
}
EXPORT_SYMBOL(rvt_rnr_tbl_to_usec);
static inline unsigned long rvt_aeth_to_usec(u32 aeth)
{
return ib_rvt_rnr_table[(aeth >> RVT_AETH_CREDIT_SHIFT) &

1
include/rdma/rdmavt_qp.h
View file

@ -653,6 +653,7 @@ struct rvt_dev_info;
void rvt_comm_est(struct rvt_qp *qp);
int rvt_error_qp(struct rvt_qp *qp, enum ib_wc_status err);
void rvt_rc_error(struct rvt_qp *qp, enum ib_wc_status err);
unsigned long rvt_rnr_tbl_to_usec(u32 index);
enum hrtimer_restart rvt_rc_rnr_retry(struct hrtimer *t);
void rvt_add_rnr_timer(struct rvt_qp *qp, u32 aeth);
void rvt_del_timers_sync(struct rvt_qp *qp);