e785d29dff
[ Upstream commit 65197a4 ]
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 <selvin.xavier@broadcom.com>
Signed-off-by: Nicolas Morey <nmorey@suse.com>
(cherry picked from commit ac4be7ab029ef79b45c1055fb7504643fd129194)
32 lines
1.3 KiB
Diff
32 lines
1.3 KiB
Diff
From 05b65d96296f07baca079acef1a5bbb3c71fffb6 Mon Sep 17 00:00:00 2001
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From: Selvin Xavier <selvin.xavier@broadcom.com>
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Date: Wed, 17 Jul 2024 10:34:23 +0800
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Subject: [PATCH] Fix the stride calculation for MSN/PSN area [ Upstream commit
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65197a4 ] Library expects ilog2 of psn_size while calculating the stride.
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ilog32 returns log2(v) + 1 and the calculation fails since the psn size is a
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power of 2 value. Fix by passing psn_size - 1.
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Fixes: 0a0e0d0 ("bnxt_re/lib: Adds MSN table capability for Gen P7 adapters")
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Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
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Signed-off-by: Nicolas Morey <nmorey@suse.com>
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---
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providers/bnxt_re/verbs.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/providers/bnxt_re/verbs.c b/providers/bnxt_re/verbs.c
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index 55d5284..a74d32c 100644
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--- a/providers/bnxt_re/verbs.c
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+++ b/providers/bnxt_re/verbs.c
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@@ -1233,7 +1233,7 @@ static int bnxt_re_alloc_queues(struct bnxt_re_context *cntx,
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/* psn_depth extra entries of size que->stride */
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psn_size = bnxt_re_get_psne_size(qp->cntx);
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psn_depth = (nswr * psn_size) / que->stride;
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- que->pad_stride_log2 = (uint32_t)ilog32(psn_size);
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+ que->pad_stride_log2 = ilog32(psn_size - 1);
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if ((nswr * psn_size) % que->stride)
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psn_depth++;
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que->depth += psn_depth;
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--
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2.27.0
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