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IB/rdmavt, IB/hfi1, IB/qib: Add inlines for mtu division

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Add rvt_div_round_up_mtu() and rvt_div_mtu() routines to
do the computation based on the pmtu and the log_pmtu.

Change divides in qib, hfi1 to use the new inlines.

Reviewed-by: Kaike Wan <[email protected]>
Signed-off-by: Mike Marciniszyn <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
This commit is contained in:
Mike Marciniszyn 2016-12-07 19:34:37 -08:00 • committed by Doug Ledford
commit 5dc806052a
3 changed files with 25 additions and 5 deletions
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24
include/rdma/rdmavt_qp.h
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@ -582,7 +582,29 @@ static inline void rvt_qp_swqe_complete(
}
}
extern const int ib_rvt_state_ops[];
/**
* @qp - the qp pair
* @len - the length
*
* Perform a shift based mtu round up divide
*/
static inline u32 rvt_div_round_up_mtu(struct rvt_qp *qp, u32 len)
{
return (len + qp->pmtu - 1) >> qp->log_pmtu;
}
/**
* @qp - the qp pair
* @len - the length
*
* Perform a shift based mtu divide
*/
static inline u32 rvt_div_mtu(struct rvt_qp *qp, u32 len)
{
return len >> qp->log_pmtu;
}
extern const int ib_rvt_state_ops[];
struct rvt_dev_info;
int rvt_error_qp(struct rvt_qp *qp, enum ib_wc_status err);