From: Michael Chan <michael.chan@broadcom•com>
To: davem@davemloft•net
Cc: netdev@vger•kernel.org, kuba@kernel•org, gospo@broadcom•com
Subject: [PATCH net 2/3] bnxt_en: Fix TQM fastpath ring backing store computation
Date: Fri, 18 Jun 2021 02:07:26 -0400 [thread overview]
Message-ID: <1623996447-28958-3-git-send-email-michael.chan@broadcom.com> (raw)
In-Reply-To: <1623996447-28958-1-git-send-email-michael.chan@broadcom.com>
From: Rukhsana Ansari <rukhsana.ansari@broadcom•com>
TQM fastpath ring needs to be sized to store both the requester
and responder side of RoCE QPs in TQM for supporting bi-directional
tests. Fix bnxt_alloc_ctx_mem() to multiply the RoCE QPs by a factor of
2 when computing the number of entries for TQM fastpath ring. This
fixes an RX pipeline stall issue when running bi-directional max
RoCE QP tests.
Fixes: c7dd7ab4b204 ("bnxt_en: Improve TQM ring context memory sizing formulas.")
Signed-off-by: Rukhsana Ansari <rukhsana.ansari@broadcom•com>
Signed-off-by: Michael Chan <michael.chan@broadcom•com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 3685db6dc93d..c913cb1f2a72 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -7308,7 +7308,7 @@ static int bnxt_alloc_ctx_mem(struct bnxt *bp)
entries_sp = ctx->vnic_max_vnic_entries + ctx->qp_max_l2_entries +
2 * (extra_qps + ctx->qp_min_qp1_entries) + min;
entries_sp = roundup(entries_sp, ctx->tqm_entries_multiple);
- entries = ctx->qp_max_l2_entries + extra_qps + ctx->qp_min_qp1_entries;
+ entries = ctx->qp_max_l2_entries + 2 * (extra_qps + ctx->qp_min_qp1_entries);
entries = roundup(entries, ctx->tqm_entries_multiple);
entries = clamp_t(u32, entries, min, ctx->tqm_max_entries_per_ring);
for (i = 0; i < ctx->tqm_fp_rings_count + 1; i++) {
--
2.18.1
next prev parent reply other threads:[~2021-06-18 6:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-18 6:07 [PATCH net 0/3] bnxt_en: Bug fixes Michael Chan
2021-06-18 6:07 ` [PATCH net 1/3] bnxt_en: Rediscover PHY capabilities after firmware reset Michael Chan
2021-06-18 6:07 ` Michael Chan [this message]
2021-06-18 6:07 ` [PATCH net 3/3] bnxt_en: Call bnxt_ethtool_free() in bnxt_init_one() error path Michael Chan
2021-06-18 19:10 ` [PATCH net 0/3] bnxt_en: Bug fixes patchwork-bot+netdevbpf
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