IB/rdmavt, IB/hfi1, IB/qib: Add inlines for mtu division
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 <kaike.wan@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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@ -2377,8 +2377,7 @@ send_last:
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* Update the next expected PSN. We add 1 later
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* below, so only add the remainder here.
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*/
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if (len > pmtu)
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qp->r_psn += (len - 1) / pmtu;
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qp->r_psn += rvt_div_mtu(qp, len - 1);
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} else {
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e->rdma_sge.mr = NULL;
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e->rdma_sge.vaddr = NULL;
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@ -2079,8 +2079,7 @@ send_last:
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* Update the next expected PSN. We add 1 later
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* below, so only add the remainder here.
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*/
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if (len > pmtu)
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qp->r_psn += (len - 1) / pmtu;
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qp->r_psn += rvt_div_mtu(qp, len - 1);
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} else {
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e->rdma_sge.mr = NULL;
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e->rdma_sge.vaddr = NULL;
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@ -582,7 +582,29 @@ static inline void rvt_qp_swqe_complete(
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}
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}
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extern const int ib_rvt_state_ops[];
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/**
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* @qp - the qp pair
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* @len - the length
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*
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* Perform a shift based mtu round up divide
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*/
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static inline u32 rvt_div_round_up_mtu(struct rvt_qp *qp, u32 len)
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{
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return (len + qp->pmtu - 1) >> qp->log_pmtu;
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}
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/**
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* @qp - the qp pair
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* @len - the length
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*
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* Perform a shift based mtu divide
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*/
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static inline u32 rvt_div_mtu(struct rvt_qp *qp, u32 len)
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{
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return len >> qp->log_pmtu;
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}
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extern const int ib_rvt_state_ops[];
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struct rvt_dev_info;
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int rvt_error_qp(struct rvt_qp *qp, enum ib_wc_status err);
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