[PATCH 1/8] bus/dpaa: fix bus scan for DMA devices

[PATCH 1/8] bus/dpaa: fix bus scan for DMA devices

[vanshika.shukla]

From: Gagandeep Singh <g.singh@nxp.com>

if there is no sec devices available, code is not scanning QDMA dev
This patch fix this problem by adding a goto statement instead
of return in case no sec device available.

Fixes: 583f3732974f ("dma/dpaa: introduce DPAA DMA driver skeleton")
Cc: stable@dpdk.org

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/dpaa_bus.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index 5d4352bb3c..de190eb569 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -221,7 +221,7 @@ dpaa_create_device_list(void)
 
 	if (dpaa_sec_available()) {
 		DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
-		return 0;
+		goto qdma_dpaa;
 	}
 
 	/* Creating SEC Devices */
@@ -260,6 +260,7 @@ dpaa_create_device_list(void)
 
 	rte_dpaa_bus.device_count += i;
 
+qdma_dpaa:
 	/* Creating QDMA Device */
 	for (i = 0; i < RTE_DPAA_QDMA_DEVICES; i++) {
 		dev = calloc(1, sizeof(struct rte_dpaa_device));
-- 
2.25.1

[PATCH 2/8] bus/dpaa: fix resource leak in variable dev

[vanshika.shukla]

From: Apeksha Gupta <apeksha.gupta@nxp.com>

Resource leak:
variable dev is going out of scope leaks the storage.

Fixes: d61138d4f0e2 ("drivers: remove direct access to interrupt handle")
Cc: hkalra@marvell.com
Cc: stable@dpdk.org

Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/dpaa_bus.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index de190eb569..6ea27d8fb6 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -188,6 +188,7 @@ dpaa_create_device_list(void)
 		if (dev->intr_handle == NULL) {
 			DPAA_BUS_LOG(ERR, "Failed to allocate intr handle");
 			ret = -ENOMEM;
+			free(dev);
 			goto cleanup;
 		}
 
@@ -239,6 +240,7 @@ dpaa_create_device_list(void)
 		if (dev->intr_handle == NULL) {
 			DPAA_BUS_LOG(ERR, "Failed to allocate intr handle");
 			ret = -ENOMEM;
+			free(dev);
 			goto cleanup;
 		}
 
-- 
2.25.1

[PATCH 3/8] common/dpaax: fix IOVA table cleanup

[vanshika.shukla]

From: Gagandeep Singh <g.singh@nxp.com>

Fixes incorrect structure free

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/common/dpaax/dpaax_iova_table.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c
index 9daac4bc03..d2a78f4c19 100644
--- a/drivers/common/dpaax/dpaax_iova_table.c
+++ b/drivers/common/dpaax/dpaax_iova_table.c
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2018 NXP
+ * Copyright 2018-2023 NXP
  */
 
 #include <rte_memory.h>
@@ -255,10 +255,7 @@ dpaax_iova_table_populate(void)
 void
 dpaax_iova_table_depopulate(void)
 {
-	if (dpaax_iova_table_p == NULL)
-		return;
-
-	rte_free(dpaax_iova_table_p->entries);
+	rte_free(dpaax_iova_table_p);
 	dpaax_iova_table_p = NULL;
 
 	DPAAX_DEBUG("IOVA Table cleaned");
-- 
2.25.1

[PATCH 4/8] common/dpaax: fix array overrun issue

[vanshika.shukla]

From: Apeksha Gupta <apeksha.gupta@nxp.com>

Out-of-bounds read, Overrunning dynamic array nodes at offset corresponding
to index variable j.

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/common/dpaax/dpaax_iova_table.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c
index d2a78f4c19..860e702333 100644
--- a/drivers/common/dpaax/dpaax_iova_table.c
+++ b/drivers/common/dpaax/dpaax_iova_table.c
@@ -139,10 +139,12 @@ read_memory_node(unsigned int *count)
 	}
 
 	DPAAX_DEBUG("Device-tree memory node data:");
-	do {
+
+	while (j > 0) {
+		--j;
 		DPAAX_DEBUG("    %08" PRIx64 " %08zu",
 			    nodes[j].addr, nodes[j].len);
-	} while (--j);
+	}
 
 cleanup:
 	close(fd);
-- 
2.25.1

[PATCH 5/8] bus/dpaa: remove redundant file descriptor check

[vanshika.shukla]

From: Rohit Raj <rohit.raj@nxp.com>

This patch removes the redundant file descriptor check

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Rohit Raj <rohit.raj@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/base/qbman/process.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/bus/dpaa/base/qbman/process.c b/drivers/bus/dpaa/base/qbman/process.c
index 3504ec97db..3e4622f606 100644
--- a/drivers/bus/dpaa/base/qbman/process.c
+++ b/drivers/bus/dpaa/base/qbman/process.c
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
  *
  * Copyright 2011-2016 Freescale Semiconductor Inc.
- * Copyright 2017,2020 NXP
+ * Copyright 2017,2020,2022,2024 NXP
  *
  */
 #include <assert.h>
@@ -27,15 +27,16 @@ static int check_fd(void)
 {
 	int ret;
 
-	if (fd >= 0)
-		return 0;
 	ret = pthread_mutex_lock(&fd_init_lock);
 	assert(!ret);
+
 	/* check again with the lock held */
 	if (fd < 0)
 		fd = open(PROCESS_PATH, O_RDWR);
+
 	ret = pthread_mutex_unlock(&fd_init_lock);
 	assert(!ret);
+
 	return (fd >= 0) ? 0 : -ENODEV;
 }
 
-- 
2.25.1

[v2 1/7] bus/dpaa: fix bus scan for DMA devices

[vanshika.shukla]

From: Gagandeep Singh <g.singh@nxp.com>

if there is no sec devices available, code is not scanning QDMA dev
This patch fix this problem by adding a goto statement instead
of return in case no sec device available.

Fixes: 583f3732974f ("dma/dpaa: introduce DPAA DMA driver skeleton")
Cc: stable@dpdk.org

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/dpaa_bus.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index 5d4352bb3c..de190eb569 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -221,7 +221,7 @@ dpaa_create_device_list(void)
 
 	if (dpaa_sec_available()) {
 		DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
-		return 0;
+		goto qdma_dpaa;
 	}
 
 	/* Creating SEC Devices */
@@ -260,6 +260,7 @@ dpaa_create_device_list(void)
 
 	rte_dpaa_bus.device_count += i;
 
+qdma_dpaa:
 	/* Creating QDMA Device */
 	for (i = 0; i < RTE_DPAA_QDMA_DEVICES; i++) {
 		dev = calloc(1, sizeof(struct rte_dpaa_device));
-- 
2.25.1

[v2 2/7] bus/dpaa: fix resource leak in variable dev

[vanshika.shukla]

From: Apeksha Gupta <apeksha.gupta@nxp.com>

Resource leak:
variable dev is going out of scope leaks the storage.

Fixes: d61138d4f0e2 ("drivers: remove direct access to interrupt handle")
Cc: hkalra@marvell.com
Cc: stable@dpdk.org

Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/dpaa_bus.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index de190eb569..6ea27d8fb6 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -188,6 +188,7 @@ dpaa_create_device_list(void)
 		if (dev->intr_handle == NULL) {
 			DPAA_BUS_LOG(ERR, "Failed to allocate intr handle");
 			ret = -ENOMEM;
+			free(dev);
 			goto cleanup;
 		}
 
@@ -239,6 +240,7 @@ dpaa_create_device_list(void)
 		if (dev->intr_handle == NULL) {
 			DPAA_BUS_LOG(ERR, "Failed to allocate intr handle");
 			ret = -ENOMEM;
+			free(dev);
 			goto cleanup;
 		}
 
-- 
2.25.1

[v2 3/7] common/dpaax: fix IOVA table cleanup

[vanshika.shukla]

From: Gagandeep Singh <g.singh@nxp.com>

Fixes incorrect structure free

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/common/dpaax/dpaax_iova_table.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c
index 9daac4bc03..d2a78f4c19 100644
--- a/drivers/common/dpaax/dpaax_iova_table.c
+++ b/drivers/common/dpaax/dpaax_iova_table.c
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2018 NXP
+ * Copyright 2018-2023 NXP
  */
 
 #include <rte_memory.h>
@@ -255,10 +255,7 @@ dpaax_iova_table_populate(void)
 void
 dpaax_iova_table_depopulate(void)
 {
-	if (dpaax_iova_table_p == NULL)
-		return;
-
-	rte_free(dpaax_iova_table_p->entries);
+	rte_free(dpaax_iova_table_p);
 	dpaax_iova_table_p = NULL;
 
 	DPAAX_DEBUG("IOVA Table cleaned");
-- 
2.25.1

[v2 4/7] common/dpaax: fix array overrun issue

[vanshika.shukla]

From: Apeksha Gupta <apeksha.gupta@nxp.com>

Out-of-bounds read, Overrunning dynamic array nodes at offset corresponding
to index variable j.

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/common/dpaax/dpaax_iova_table.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c
index d2a78f4c19..860e702333 100644
--- a/drivers/common/dpaax/dpaax_iova_table.c
+++ b/drivers/common/dpaax/dpaax_iova_table.c
@@ -139,10 +139,12 @@ read_memory_node(unsigned int *count)
 	}
 
 	DPAAX_DEBUG("Device-tree memory node data:");
-	do {
+
+	while (j > 0) {
+		--j;
 		DPAAX_DEBUG("    %08" PRIx64 " %08zu",
 			    nodes[j].addr, nodes[j].len);
-	} while (--j);
+	}
 
 cleanup:
 	close(fd);
-- 
2.25.1

[v2 5/7] bus/dpaa: remove redundant file descriptor check

[vanshika.shukla]

From: Rohit Raj <rohit.raj@nxp.com>

This patch removes the redundant file descriptor check

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Rohit Raj <rohit.raj@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/base/qbman/process.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/bus/dpaa/base/qbman/process.c b/drivers/bus/dpaa/base/qbman/process.c
index 3504ec97db..3e4622f606 100644
--- a/drivers/bus/dpaa/base/qbman/process.c
+++ b/drivers/bus/dpaa/base/qbman/process.c
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
  *
  * Copyright 2011-2016 Freescale Semiconductor Inc.
- * Copyright 2017,2020 NXP
+ * Copyright 2017,2020,2022,2024 NXP
  *
  */
 #include <assert.h>
@@ -27,15 +27,16 @@ static int check_fd(void)
 {
 	int ret;
 
-	if (fd >= 0)
-		return 0;
 	ret = pthread_mutex_lock(&fd_init_lock);
 	assert(!ret);
+
 	/* check again with the lock held */
 	if (fd < 0)
 		fd = open(PROCESS_PATH, O_RDWR);
+
 	ret = pthread_mutex_unlock(&fd_init_lock);
 	assert(!ret);
+
 	return (fd >= 0) ? 0 : -ENODEV;
 }
 
-- 
2.25.1

[PATCH v3 1/8] bus/dpaa: fix bus scan for DMA devices

[vanshika.shukla]

From: Gagandeep Singh <g.singh@nxp.com>

if there is no sec devices available, code is not scanning QDMA dev
This patch fix this problem by adding a goto statement instead
of return in case no sec device available.

Fixes: 583f3732974f ("dma/dpaa: introduce DPAA DMA driver skeleton")
Cc: stable@dpdk.org

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/dpaa_bus.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index 64b748626b..b8f41ec069 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -221,7 +221,7 @@ dpaa_create_device_list(void)
 
 	if (dpaa_sec_available()) {
 		DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
-		return 0;
+		goto qdma_dpaa;
 	}
 
 	/* Creating SEC Devices */
@@ -260,6 +260,7 @@ dpaa_create_device_list(void)
 
 	rte_dpaa_bus.device_count += i;
 
+qdma_dpaa:
 	/* Creating QDMA Device */
 	for (i = 0; i < RTE_DPAA_QDMA_DEVICES; i++) {
 		dev = calloc(1, sizeof(struct rte_dpaa_device));
-- 
2.25.1

[PATCH v3 2/8] bus/dpaa: fix resource leak in variable dev

[vanshika.shukla]

From: Apeksha Gupta <apeksha.gupta@nxp.com>

Resource leak:
variable dev is going out of scope leaks the storage.

Fixes: d61138d4f0e2 ("drivers: remove direct access to interrupt handle")
Cc: hkalra@marvell.com
Cc: stable@dpdk.org

Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/dpaa_bus.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index b8f41ec069..1f6997c77e 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -188,6 +188,7 @@ dpaa_create_device_list(void)
 		if (dev->intr_handle == NULL) {
 			DPAA_BUS_LOG(ERR, "Failed to allocate intr handle");
 			ret = -ENOMEM;
+			free(dev);
 			goto cleanup;
 		}
 
@@ -239,6 +240,7 @@ dpaa_create_device_list(void)
 		if (dev->intr_handle == NULL) {
 			DPAA_BUS_LOG(ERR, "Failed to allocate intr handle");
 			ret = -ENOMEM;
+			free(dev);
 			goto cleanup;
 		}
 
-- 
2.25.1

[PATCH v3 3/8] common/dpaax: fix IOVA table cleanup

[vanshika.shukla]

From: Gagandeep Singh <g.singh@nxp.com>

Fixes incorrect structure free

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/common/dpaax/dpaax_iova_table.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c
index 9daac4bc03..d2a78f4c19 100644
--- a/drivers/common/dpaax/dpaax_iova_table.c
+++ b/drivers/common/dpaax/dpaax_iova_table.c
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2018 NXP
+ * Copyright 2018-2023 NXP
  */
 
 #include <rte_memory.h>
@@ -255,10 +255,7 @@ dpaax_iova_table_populate(void)
 void
 dpaax_iova_table_depopulate(void)
 {
-	if (dpaax_iova_table_p == NULL)
-		return;
-
-	rte_free(dpaax_iova_table_p->entries);
+	rte_free(dpaax_iova_table_p);
 	dpaax_iova_table_p = NULL;
 
 	DPAAX_DEBUG("IOVA Table cleaned");
-- 
2.25.1

[PATCH v3 4/8] common/dpaax: fix array overrun issue

[vanshika.shukla]

From: Apeksha Gupta <apeksha.gupta@nxp.com>

Out-of-bounds read, Overrunning dynamic array nodes at offset corresponding
to index variable j.

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/common/dpaax/dpaax_iova_table.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c
index d2a78f4c19..860e702333 100644
--- a/drivers/common/dpaax/dpaax_iova_table.c
+++ b/drivers/common/dpaax/dpaax_iova_table.c
@@ -139,10 +139,12 @@ read_memory_node(unsigned int *count)
 	}
 
 	DPAAX_DEBUG("Device-tree memory node data:");
-	do {
+
+	while (j > 0) {
+		--j;
 		DPAAX_DEBUG("    %08" PRIx64 " %08zu",
 			    nodes[j].addr, nodes[j].len);
-	} while (--j);
+	}
 
 cleanup:
 	close(fd);
-- 
2.25.1

[PATCH v3 5/8] bus/dpaa: remove redundant file descriptor check

[vanshika.shukla]

From: Rohit Raj <rohit.raj@nxp.com>

This patch removes the redundant file descriptor check

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Rohit Raj <rohit.raj@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/base/qbman/process.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/bus/dpaa/base/qbman/process.c b/drivers/bus/dpaa/base/qbman/process.c
index 59e0d641ce..2d805c5bd9 100644
--- a/drivers/bus/dpaa/base/qbman/process.c
+++ b/drivers/bus/dpaa/base/qbman/process.c
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
  *
  * Copyright 2011-2016 Freescale Semiconductor Inc.
- * Copyright 2017,2020 NXP
+ * Copyright 2017,2020,2022,2024 NXP
  *
  */
 #include <assert.h>
@@ -28,15 +28,16 @@ static int check_fd(void)
 {
 	int ret;
 
-	if (fd >= 0)
-		return 0;
 	ret = pthread_mutex_lock(&fd_init_lock);
 	assert(!ret);
+
 	/* check again with the lock held */
 	if (fd < 0)
 		fd = open(PROCESS_PATH, O_RDWR);
+
 	ret = pthread_mutex_unlock(&fd_init_lock);
 	assert(!ret);
+
 	return (fd >= 0) ? 0 : -ENODEV;
 }
 
-- 
2.25.1

Re: [PATCH v3 2/8] bus/dpaa: fix resource leak in variable dev

[David Marchand]

On Mon, Jul 8, 2024 at 9:29 AM <vanshika.shukla@nxp.com> wrote:
>
> From: Apeksha Gupta <apeksha.gupta@nxp.com>
>
> Resource leak:
> variable dev is going out of scope leaks the storage.
>
> Fixes: d61138d4f0e2 ("drivers: remove direct access to interrupt handle")
> Cc: hkalra@marvell.com
> Cc: stable@dpdk.org
>
> Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
> Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>

This lgtm.
Was this issue detected by the public CI coverity?
If so, please add a Coverity ID: tag.


-- 
David Marchand

[v4 1/8] bus/dpaa: fix bus scan for DMA devices

[vanshika.shukla]

From: Gagandeep Singh <g.singh@nxp.com>

if there is no sec devices available, code is not scanning QDMA dev
This patch fix this problem by adding a goto statement instead
of return in case no sec device available.

Fixes: 583f3732974f ("dma/dpaa: introduce DPAA DMA driver skeleton")
Cc: stable@dpdk.org

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/dpaa_bus.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index 64b748626b..b8f41ec069 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -221,7 +221,7 @@ dpaa_create_device_list(void)
 
 	if (dpaa_sec_available()) {
 		DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
-		return 0;
+		goto qdma_dpaa;
 	}
 
 	/* Creating SEC Devices */
@@ -260,6 +260,7 @@ dpaa_create_device_list(void)
 
 	rte_dpaa_bus.device_count += i;
 
+qdma_dpaa:
 	/* Creating QDMA Device */
 	for (i = 0; i < RTE_DPAA_QDMA_DEVICES; i++) {
 		dev = calloc(1, sizeof(struct rte_dpaa_device));
-- 
2.25.1

[v4 2/8] bus/dpaa: fix resource leak in variable dev

[vanshika.shukla]

From: Apeksha Gupta <apeksha.gupta@nxp.com>

Resource leak:
variable dev is going out of scope leaks the storage.

Coverity issue: CID 373703
Fixes: d61138d4f0e2 ("drivers: remove direct access to interrupt handle")
Cc: hkalra@marvell.com
Cc: stable@dpdk.org

Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/dpaa_bus.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index b8f41ec069..1f6997c77e 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -188,6 +188,7 @@ dpaa_create_device_list(void)
 		if (dev->intr_handle == NULL) {
 			DPAA_BUS_LOG(ERR, "Failed to allocate intr handle");
 			ret = -ENOMEM;
+			free(dev);
 			goto cleanup;
 		}
 
@@ -239,6 +240,7 @@ dpaa_create_device_list(void)
 		if (dev->intr_handle == NULL) {
 			DPAA_BUS_LOG(ERR, "Failed to allocate intr handle");
 			ret = -ENOMEM;
+			free(dev);
 			goto cleanup;
 		}
 
-- 
2.25.1

[v4 3/8] common/dpaax: fix IOVA table cleanup

[vanshika.shukla]

From: Gagandeep Singh <g.singh@nxp.com>

Fixes incorrect structure free

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/common/dpaax/dpaax_iova_table.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c
index 9daac4bc03..d2a78f4c19 100644
--- a/drivers/common/dpaax/dpaax_iova_table.c
+++ b/drivers/common/dpaax/dpaax_iova_table.c
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2018 NXP
+ * Copyright 2018-2023 NXP
  */
 
 #include <rte_memory.h>
@@ -255,10 +255,7 @@ dpaax_iova_table_populate(void)
 void
 dpaax_iova_table_depopulate(void)
 {
-	if (dpaax_iova_table_p == NULL)
-		return;
-
-	rte_free(dpaax_iova_table_p->entries);
+	rte_free(dpaax_iova_table_p);
 	dpaax_iova_table_p = NULL;
 
 	DPAAX_DEBUG("IOVA Table cleaned");
-- 
2.25.1

[v4 4/8] common/dpaax: fix array overrun issue

[vanshika.shukla]

From: Apeksha Gupta <apeksha.gupta@nxp.com>

Out-of-bounds read, Overrunning dynamic array nodes at offset corresponding
to index variable j.

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/common/dpaax/dpaax_iova_table.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c
index d2a78f4c19..860e702333 100644
--- a/drivers/common/dpaax/dpaax_iova_table.c
+++ b/drivers/common/dpaax/dpaax_iova_table.c
@@ -139,10 +139,12 @@ read_memory_node(unsigned int *count)
 	}
 
 	DPAAX_DEBUG("Device-tree memory node data:");
-	do {
+
+	while (j > 0) {
+		--j;
 		DPAAX_DEBUG("    %08" PRIx64 " %08zu",
 			    nodes[j].addr, nodes[j].len);
-	} while (--j);
+	}
 
 cleanup:
 	close(fd);
-- 
2.25.1

[v4 5/8] bus/dpaa: remove redundant file descriptor check

[vanshika.shukla]

From: Rohit Raj <rohit.raj@nxp.com>

This patch removes the redundant file descriptor check

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Rohit Raj <rohit.raj@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/base/qbman/process.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/bus/dpaa/base/qbman/process.c b/drivers/bus/dpaa/base/qbman/process.c
index 59e0d641ce..2d805c5bd9 100644
--- a/drivers/bus/dpaa/base/qbman/process.c
+++ b/drivers/bus/dpaa/base/qbman/process.c
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
  *
  * Copyright 2011-2016 Freescale Semiconductor Inc.
- * Copyright 2017,2020 NXP
+ * Copyright 2017,2020,2022,2024 NXP
  *
  */
 #include <assert.h>
@@ -28,15 +28,16 @@ static int check_fd(void)
 {
 	int ret;
 
-	if (fd >= 0)
-		return 0;
 	ret = pthread_mutex_lock(&fd_init_lock);
 	assert(!ret);
+
 	/* check again with the lock held */
 	if (fd < 0)
 		fd = open(PROCESS_PATH, O_RDWR);
+
 	ret = pthread_mutex_unlock(&fd_init_lock);
 	assert(!ret);
+
 	return (fd >= 0) ? 0 : -ENODEV;
 }
 
-- 
2.25.1

[v4 7/8] net/dpaa: restrict MTU config for shared intf

[vanshika.shukla]

From: Rohit Raj <rohit.raj@nxp.com>

Since DPDK was able to configure mtu in VSP/Shared interface  mode,
it was causing misconfiguration of the hw which further caused crashes.

This patch allow only kernel to config MTU in such cases

Fixes: e4abd4ff183c ("net/dpaa: support virtual storage profile")
Cc: jun.yang@nxp.com
Cc: stable@dpdk.org

Signed-off-by: Rohit Raj <rohit.raj@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/net/dpaa/dpaa_ethdev.c | 33 +++++++++++++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c
index 44bac67803..060b8c678f 100644
--- a/drivers/net/dpaa/dpaa_ethdev.c
+++ b/drivers/net/dpaa/dpaa_ethdev.c
@@ -14,6 +14,7 @@
 #include <pthread.h>
 #include <sys/types.h>
 #include <sys/syscall.h>
+#include <sys/ioctl.h>
 
 #include <rte_string_fns.h>
 #include <rte_byteorder.h>
@@ -165,9 +166,15 @@ dpaa_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 	uint32_t frame_size = mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN
 				+ VLAN_TAG_SIZE;
 	uint32_t buffsz = dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM;
+	struct fman_if *fif = dev->process_private;
 
 	PMD_INIT_FUNC_TRACE();
 
+	if (fif->is_shared_mac) {
+		DPAA_PMD_ERR("Cannot configure mtu from DPDK in VSP mode.");
+		return -ENOTSUP;
+	}
+
 	/*
 	 * Refuse mtu that requires the support of scattered packets
 	 * when this feature has not been enabled before.
@@ -206,7 +213,8 @@ dpaa_eth_dev_configure(struct rte_eth_dev *dev)
 	struct rte_intr_handle *intr_handle;
 	uint32_t max_rx_pktlen;
 	int speed, duplex;
-	int ret, rx_status;
+	int ret, rx_status, socket_fd;
+	struct ifreq ifr;
 
 	PMD_INIT_FUNC_TRACE();
 
@@ -222,6 +230,26 @@ dpaa_eth_dev_configure(struct rte_eth_dev *dev)
 				     dpaa_intf->name);
 			return -EHOSTDOWN;
 		}
+
+		socket_fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
+		if (socket_fd == -1) {
+			DPAA_PMD_ERR("Cannot open IF socket");
+			return -errno;
+		}
+
+		strncpy(ifr.ifr_name, dpaa_intf->name, IFNAMSIZ - 1);
+
+		if (ioctl(socket_fd, SIOCGIFMTU, &ifr) < 0) {
+			DPAA_PMD_ERR("Cannot get interface mtu");
+			close(socket_fd);
+			return -errno;
+		}
+
+		close(socket_fd);
+		DPAA_PMD_INFO("Using kernel configured mtu size(%u)",
+			     ifr.ifr_mtu);
+
+		eth_conf->rxmode.mtu = ifr.ifr_mtu;
 	}
 
 	/* Rx offloads which are enabled by default */
@@ -249,7 +277,8 @@ dpaa_eth_dev_configure(struct rte_eth_dev *dev)
 		max_rx_pktlen = DPAA_MAX_RX_PKT_LEN;
 	}
 
-	fman_if_set_maxfrm(dev->process_private, max_rx_pktlen);
+	if (!fif->is_shared_mac)
+		fman_if_set_maxfrm(dev->process_private, max_rx_pktlen);
 
 	if (rx_offloads & RTE_ETH_RX_OFFLOAD_SCATTER) {
 		DPAA_PMD_DEBUG("enabling scatter mode");
-- 
2.25.1

[v5 1/8] bus/dpaa: fix bus scan for DMA devices

[vanshika.shukla]

From: Gagandeep Singh <g.singh@nxp.com>

if there is no sec devices available, code is not scanning QDMA dev
This patch fix this problem by adding a goto statement instead
of return in case no sec device available.

Fixes: 583f3732974f ("dma/dpaa: introduce DPAA DMA driver skeleton")
Cc: stable@dpdk.org

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/dpaa_bus.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index 64b748626b..b8f41ec069 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -221,7 +221,7 @@ dpaa_create_device_list(void)
 
 	if (dpaa_sec_available()) {
 		DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
-		return 0;
+		goto qdma_dpaa;
 	}
 
 	/* Creating SEC Devices */
@@ -260,6 +260,7 @@ dpaa_create_device_list(void)
 
 	rte_dpaa_bus.device_count += i;
 
+qdma_dpaa:
 	/* Creating QDMA Device */
 	for (i = 0; i < RTE_DPAA_QDMA_DEVICES; i++) {
 		dev = calloc(1, sizeof(struct rte_dpaa_device));
-- 
2.25.1

[v5 2/8] bus/dpaa: fix resource leak in variable dev

[vanshika.shukla]

From: Apeksha Gupta <apeksha.gupta@nxp.com>

Resource leak:
variable dev is going out of scope leaks the storage.

Coverity issue: CID 373703
Fixes: d61138d4f0e2 ("drivers: remove direct access to interrupt handle")
Cc: hkalra@marvell.com
Cc: stable@dpdk.org

Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/dpaa_bus.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index b8f41ec069..1f6997c77e 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -188,6 +188,7 @@ dpaa_create_device_list(void)
 		if (dev->intr_handle == NULL) {
 			DPAA_BUS_LOG(ERR, "Failed to allocate intr handle");
 			ret = -ENOMEM;
+			free(dev);
 			goto cleanup;
 		}
 
@@ -239,6 +240,7 @@ dpaa_create_device_list(void)
 		if (dev->intr_handle == NULL) {
 			DPAA_BUS_LOG(ERR, "Failed to allocate intr handle");
 			ret = -ENOMEM;
+			free(dev);
 			goto cleanup;
 		}
 
-- 
2.25.1

[v5 3/8] common/dpaax: fix IOVA table cleanup

[vanshika.shukla]

From: Gagandeep Singh <g.singh@nxp.com>

Fixes incorrect structure free

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/common/dpaax/dpaax_iova_table.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c
index 9daac4bc03..d2a78f4c19 100644
--- a/drivers/common/dpaax/dpaax_iova_table.c
+++ b/drivers/common/dpaax/dpaax_iova_table.c
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2018 NXP
+ * Copyright 2018-2023 NXP
  */
 
 #include <rte_memory.h>
@@ -255,10 +255,7 @@ dpaax_iova_table_populate(void)
 void
 dpaax_iova_table_depopulate(void)
 {
-	if (dpaax_iova_table_p == NULL)
-		return;
-
-	rte_free(dpaax_iova_table_p->entries);
+	rte_free(dpaax_iova_table_p);
 	dpaax_iova_table_p = NULL;
 
 	DPAAX_DEBUG("IOVA Table cleaned");
-- 
2.25.1

[v5 4/8] common/dpaax: fix array overrun issue

[vanshika.shukla]

From: Apeksha Gupta <apeksha.gupta@nxp.com>

Out-of-bounds read, Overrunning dynamic array nodes at offset corresponding
to index variable j.

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/common/dpaax/dpaax_iova_table.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c
index d2a78f4c19..860e702333 100644
--- a/drivers/common/dpaax/dpaax_iova_table.c
+++ b/drivers/common/dpaax/dpaax_iova_table.c
@@ -139,10 +139,12 @@ read_memory_node(unsigned int *count)
 	}
 
 	DPAAX_DEBUG("Device-tree memory node data:");
-	do {
+
+	while (j > 0) {
+		--j;
 		DPAAX_DEBUG("    %08" PRIx64 " %08zu",
 			    nodes[j].addr, nodes[j].len);
-	} while (--j);
+	}
 
 cleanup:
 	close(fd);
-- 
2.25.1

[v5 5/8] bus/dpaa: remove redundant file descriptor check

[vanshika.shukla]

From: Rohit Raj <rohit.raj@nxp.com>

This patch removes the redundant file descriptor check

Coverity issue: CID 425715
Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")
Cc: stable@dpdk.org

Signed-off-by: Rohit Raj <rohit.raj@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/bus/dpaa/base/qbman/process.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/bus/dpaa/base/qbman/process.c b/drivers/bus/dpaa/base/qbman/process.c
index 59e0d641ce..2d805c5bd9 100644
--- a/drivers/bus/dpaa/base/qbman/process.c
+++ b/drivers/bus/dpaa/base/qbman/process.c
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
  *
  * Copyright 2011-2016 Freescale Semiconductor Inc.
- * Copyright 2017,2020 NXP
+ * Copyright 2017,2020,2022,2024 NXP
  *
  */
 #include <assert.h>
@@ -28,15 +28,16 @@ static int check_fd(void)
 {
 	int ret;
 
-	if (fd >= 0)
-		return 0;
 	ret = pthread_mutex_lock(&fd_init_lock);
 	assert(!ret);
+
 	/* check again with the lock held */
 	if (fd < 0)
 		fd = open(PROCESS_PATH, O_RDWR);
+
 	ret = pthread_mutex_unlock(&fd_init_lock);
 	assert(!ret);
+
 	return (fd >= 0) ? 0 : -ENODEV;
 }
 
-- 
2.25.1

[v5 7/8] net/dpaa: restrict MTU config for shared intf

[vanshika.shukla]

From: Rohit Raj <rohit.raj@nxp.com>

Since DPDK was able to configure mtu in VSP/Shared interface  mode,
it was causing misconfiguration of the hw which further caused crashes.

This patch allow only kernel to config MTU in such cases

Fixes: e4abd4ff183c ("net/dpaa: support virtual storage profile")
Cc: jun.yang@nxp.com
Cc: stable@dpdk.org

Signed-off-by: Rohit Raj <rohit.raj@nxp.com>
Signed-off-by: Vanshika Shukla <vanshika.shukla@nxp.com>
---
 drivers/net/dpaa/dpaa_ethdev.c | 33 +++++++++++++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c
index 44bac67803..060b8c678f 100644
--- a/drivers/net/dpaa/dpaa_ethdev.c
+++ b/drivers/net/dpaa/dpaa_ethdev.c
@@ -14,6 +14,7 @@
 #include <pthread.h>
 #include <sys/types.h>
 #include <sys/syscall.h>
+#include <sys/ioctl.h>
 
 #include <rte_string_fns.h>
 #include <rte_byteorder.h>
@@ -165,9 +166,15 @@ dpaa_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 	uint32_t frame_size = mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN
 				+ VLAN_TAG_SIZE;
 	uint32_t buffsz = dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM;
+	struct fman_if *fif = dev->process_private;
 
 	PMD_INIT_FUNC_TRACE();
 
+	if (fif->is_shared_mac) {
+		DPAA_PMD_ERR("Cannot configure mtu from DPDK in VSP mode.");
+		return -ENOTSUP;
+	}
+
 	/*
 	 * Refuse mtu that requires the support of scattered packets
 	 * when this feature has not been enabled before.
@@ -206,7 +213,8 @@ dpaa_eth_dev_configure(struct rte_eth_dev *dev)
 	struct rte_intr_handle *intr_handle;
 	uint32_t max_rx_pktlen;
 	int speed, duplex;
-	int ret, rx_status;
+	int ret, rx_status, socket_fd;
+	struct ifreq ifr;
 
 	PMD_INIT_FUNC_TRACE();
 
@@ -222,6 +230,26 @@ dpaa_eth_dev_configure(struct rte_eth_dev *dev)
 				     dpaa_intf->name);
 			return -EHOSTDOWN;
 		}
+
+		socket_fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
+		if (socket_fd == -1) {
+			DPAA_PMD_ERR("Cannot open IF socket");
+			return -errno;
+		}
+
+		strncpy(ifr.ifr_name, dpaa_intf->name, IFNAMSIZ - 1);
+
+		if (ioctl(socket_fd, SIOCGIFMTU, &ifr) < 0) {
+			DPAA_PMD_ERR("Cannot get interface mtu");
+			close(socket_fd);
+			return -errno;
+		}
+
+		close(socket_fd);
+		DPAA_PMD_INFO("Using kernel configured mtu size(%u)",
+			     ifr.ifr_mtu);
+
+		eth_conf->rxmode.mtu = ifr.ifr_mtu;
 	}
 
 	/* Rx offloads which are enabled by default */
@@ -249,7 +277,8 @@ dpaa_eth_dev_configure(struct rte_eth_dev *dev)
 		max_rx_pktlen = DPAA_MAX_RX_PKT_LEN;
 	}
 
-	fman_if_set_maxfrm(dev->process_private, max_rx_pktlen);
+	if (!fif->is_shared_mac)
+		fman_if_set_maxfrm(dev->process_private, max_rx_pktlen);
 
 	if (rx_offloads & RTE_ETH_RX_OFFLOAD_SCATTER) {
 		DPAA_PMD_DEBUG("enabling scatter mode");
-- 
2.25.1