patch 'common/sfc_efx/base: fix Rx queue without RSS hash prefix' has been queued to stable release 20.11.9

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.9

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 06/30/23. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/f0f0c2fb68dc6f47d5ae2f885e632badf411015a

Thanks.

Luca Boccassi

---
>From f0f0c2fb68dc6f47d5ae2f885e632badf411015a Mon Sep 17 00:00:00 2001
From: Artemii Morozov <artemii.morozov at arknetworks.am>
Date: Thu, 22 Jun 2023 16:31:36 +0400
Subject: [PATCH] common/sfc_efx/base: fix Rx queue without RSS hash prefix

[ upstream commit 80d18a958e4f06e121327073439c391dbc870d80 ]

If the prefix for the RSS hash was not chosen the ENOTSUP error should
be returned.

Before this patch success was returned for this case causing Rx queue
creation to fail.

Fixing return value to indicate failure.

Fixes: f784cdc5cbb1 ("common/sfc_efx/base: provide control to deliver RSS hash")

Signed-off-by: Artemii Morozov <artemii.morozov at arknetworks.am>
Reviewed-by: Andy Moreton <amoreton at xilinx.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>
---
 drivers/common/sfc_efx/base/efx_rx.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/common/sfc_efx/base/efx_rx.c b/drivers/common/sfc_efx/base/efx_rx.c
index 93a73703ed..1b1b42eedf 100644
--- a/drivers/common/sfc_efx/base/efx_rx.c
+++ b/drivers/common/sfc_efx/base/efx_rx.c
@@ -896,8 +896,10 @@ efx_rx_qcreate_internal(
 
 		rss_hash_field =
 		    &erplp->erpl_fields[EFX_RX_PREFIX_FIELD_RSS_HASH];
-		if (rss_hash_field->erpfi_width_bits == 0)
+		if (rss_hash_field->erpfi_width_bits == 0) {
+			rc = ENOTSUP;
 			goto fail5;
+		}
 	}
 
 	enp->en_rx_qcount++;
-- 
2.39.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2023-06-28 11:40:08.668037959 +0100
+++ 0014-common-sfc_efx-base-fix-Rx-queue-without-RSS-hash-pr.patch	2023-06-28 11:40:08.068027752 +0100
@@ -1 +1 @@
-From 80d18a958e4f06e121327073439c391dbc870d80 Mon Sep 17 00:00:00 2001
+From f0f0c2fb68dc6f47d5ae2f885e632badf411015a Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 80d18a958e4f06e121327073439c391dbc870d80 ]
+
@@ -15 +16,0 @@
-Cc: stable at dpdk.org
@@ -25 +26 @@
-index 68f42f5cac..61726a9f0b 100644
+index 93a73703ed..1b1b42eedf 100644
@@ -28 +29 @@
-@@ -937,8 +937,10 @@ efx_rx_qcreate_internal(
+@@ -896,8 +896,10 @@ efx_rx_qcreate_internal(