From 336e55ba3c8343e336a817ab10fdebe7312171f7 Mon Sep 17 00:00:00 2001 From: Selvin Xavier Date: Wed, 1 May 2024 05:41:40 -0700 Subject: [PATCH] bnxt_re/lib: Fix the stride calculation for MSN/PSN area [ Upstream commit 65197a49425ec0b7dc297f6afe8c2ce99d93df63 ] 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: 0a0e0d0114c5 ("bnxt_re/lib: Adds MSN table capability for Gen P7 adapters") Signed-off-by: Selvin Xavier Signed-off-by: Nicolas Morey --- providers/bnxt_re/verbs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/providers/bnxt_re/verbs.c b/providers/bnxt_re/verbs.c index db046c856..adfeb29ce 100644 --- a/providers/bnxt_re/verbs.c +++ b/providers/bnxt_re/verbs.c @@ -1236,7 +1236,7 @@ static int bnxt_re_alloc_queues(struct bnxt_re_context *cntx, /* psn_depth extra entries of size que->stride */ psn_size = bnxt_re_get_psne_size(qp->cntx); psn_depth = (nswr * psn_size) / que->stride; - que->pad_stride_log2 = (uint32_t)ilog32(psn_size); + que->pad_stride_log2 = ilog32(psn_size - 1); if ((nswr * psn_size) % que->stride) psn_depth++; que->depth += psn_depth;