From: Don Hiatt <don.hiatt@xxxxxxxxx>
Return usec from an index into ib_rvt_rnr_table.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@xxxxxxxxx>
Signed-off-by: Don Hiatt <don.hiatt@xxxxxxxxx>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx>
---
drivers/infiniband/sw/rdmavt/qp.c | 11 +++++++++++
include/rdma/rdmavt_qp.h | 1 +
2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/sw/rdmavt/qp.c b/drivers/infiniband/sw/rdmavt/qp.c
index db4315f..0b97598 100644
--- a/drivers/infiniband/sw/rdmavt/qp.c
+++ b/drivers/infiniband/sw/rdmavt/qp.c
@@ -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) &
diff --git a/include/rdma/rdmavt_qp.h b/include/rdma/rdmavt_qp.h
index 2f91fae..9767549 100644
--- a/include/rdma/rdmavt_qp.h
+++ b/include/rdma/rdmavt_qp.h
@@ -653,6 +653,7 @@ static inline u32 rvt_div_mtu(struct rvt_qp *qp, u32 len)
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);
--
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