bnxt_re/lib: Fix the stride calculation for MSN/PSN area

Library expects ilog2 of psn_size while calculating the stride. ilog32 returns log2(v) + 1 and the calculation fails since the psn size is a power of 2 value. Fix by passing psn_size - 1. Fixes: 0a0e0d0 ("bnxt_re/lib: Adds MSN table capability for Gen P7 adapters") Signed-off-by: Selvin Xavier <[email protected]>
linux-rdma · May 1, 2024 · 65197a4 · 65197a4
1 parent 3be5661
commit 65197a4
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/providers/bnxt_re/verbs.c b/providers/bnxt_re/verbs.c
@@ -1391,7 +1391,7 @@ static int bnxt_re_alloc_queues(struct bnxt_re_qp *qp,
  */
  que->pad = (que->va + que->depth * que->stride);
  psn_size = bnxt_re_get_psne_size(qp->cntx);
- que->pad_stride_log2 = ilog32(psn_size);
+ que->pad_stride_log2 = ilog32(psn_size - 1);
 
  ret = bnxt_re_alloc_init_swque(qp->jsqq, qp->mem, &qattr[indx]);
  if (ret)