patch 'eventdev/eth_tx: fix queue add error code' has been queued to stable release 20.11.5

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.5

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 03/02/22. 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/5d76457095c13677bfab501a3488de0c2bb5fa2e

Thanks.

Luca Boccassi

---
>From 5d76457095c13677bfab501a3488de0c2bb5fa2e Mon Sep 17 00:00:00 2001
From: Naga Harish K S V <s.v.naga.harish.k at intel.com>
Date: Tue, 8 Feb 2022 23:31:51 -0600
Subject: [PATCH] eventdev/eth_tx: fix queue add error code

[ upstream commit bd0a32d14b87661c39130d73ab4323247b80f864 ]

The internal function txa_service_queue_add() is returning 0
in case of error, correct this logic to return a negative value
to indicate failure.

Fixes: a3bbf2e09756 ("eventdev: add eth Tx adapter implementation")

Signed-off-by: Naga Harish K S V <s.v.naga.harish.k at intel.com>
Acked-by: Jay Jayatheerthan <jay.jayatheerthan at intel.com>
---
 lib/librte_eventdev/rte_event_eth_tx_adapter.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/lib/librte_eventdev/rte_event_eth_tx_adapter.c b/lib/librte_eventdev/rte_event_eth_tx_adapter.c
index 2684eb4308..21155362f9 100644
--- a/lib/librte_eventdev/rte_event_eth_tx_adapter.c
+++ b/lib/librte_eventdev/rte_event_eth_tx_adapter.c
@@ -760,10 +760,8 @@ txa_service_queue_add(uint8_t id,
 
 	rte_spinlock_lock(&txa->tx_lock);
 
-	if (txa_service_is_queue_added(txa, eth_dev, tx_queue_id)) {
-		rte_spinlock_unlock(&txa->tx_lock);
-		return 0;
-	}
+	if (txa_service_is_queue_added(txa, eth_dev, tx_queue_id))
+		goto ret_unlock;
 
 	ret = txa_service_queue_array_alloc(txa, eth_dev->data->port_id);
 	if (ret)
@@ -775,6 +773,8 @@ txa_service_queue_add(uint8_t id,
 
 	tdi = &txa->txa_ethdev[eth_dev->data->port_id];
 	tqi = txa_service_queue(txa, eth_dev->data->port_id, tx_queue_id);
+	if (tqi == NULL)
+		goto err_unlock;
 
 	txa_retry = &tqi->txa_retry;
 	txa_retry->id = txa->id;
@@ -790,6 +790,10 @@ txa_service_queue_add(uint8_t id,
 	tdi->nb_queues++;
 	txa->nb_queues++;
 
+ret_unlock:
+	rte_spinlock_unlock(&txa->tx_lock);
+	return 0;
+
 err_unlock:
 	if (txa->nb_queues == 0) {
 		txa_service_queue_array_free(txa,
@@ -798,7 +802,7 @@ err_unlock:
 	}
 
 	rte_spinlock_unlock(&txa->tx_lock);
-	return 0;
+	return -1;
 }
 
 static int
-- 
2.30.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2022-02-28 21:17:54.121594598 +0000
+++ 0001-eventdev-eth_tx-fix-queue-add-error-code.patch	2022-02-28 21:17:53.776927828 +0000
@@ -1 +1 @@
-From bd0a32d14b87661c39130d73ab4323247b80f864 Mon Sep 17 00:00:00 2001
+From 5d76457095c13677bfab501a3488de0c2bb5fa2e Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit bd0a32d14b87661c39130d73ab4323247b80f864 ]
+
@@ -11 +12,0 @@
-Cc: stable at dpdk.org
@@ -16 +17 @@
- lib/eventdev/rte_event_eth_tx_adapter.c | 14 +++++++++-----
+ lib/librte_eventdev/rte_event_eth_tx_adapter.c | 14 +++++++++-----
@@ -19,5 +20,5 @@
-diff --git a/lib/eventdev/rte_event_eth_tx_adapter.c b/lib/eventdev/rte_event_eth_tx_adapter.c
-index c17f33f098..1b304f0a73 100644
---- a/lib/eventdev/rte_event_eth_tx_adapter.c
-+++ b/lib/eventdev/rte_event_eth_tx_adapter.c
-@@ -806,10 +806,8 @@ txa_service_queue_add(uint8_t id,
+diff --git a/lib/librte_eventdev/rte_event_eth_tx_adapter.c b/lib/librte_eventdev/rte_event_eth_tx_adapter.c
+index 2684eb4308..21155362f9 100644
+--- a/lib/librte_eventdev/rte_event_eth_tx_adapter.c
++++ b/lib/librte_eventdev/rte_event_eth_tx_adapter.c
+@@ -760,10 +760,8 @@ txa_service_queue_add(uint8_t id,
@@ -36 +37 @@
-@@ -821,6 +819,8 @@ txa_service_queue_add(uint8_t id,
+@@ -775,6 +773,8 @@ txa_service_queue_add(uint8_t id,
@@ -45 +46 @@
-@@ -836,6 +836,10 @@ txa_service_queue_add(uint8_t id,
+@@ -790,6 +790,10 @@ txa_service_queue_add(uint8_t id,
@@ -56 +57 @@
-@@ -844,7 +848,7 @@ err_unlock:
+@@ -798,7 +802,7 @@ err_unlock: