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From: <eagostini@nvidia.com>
To: <dev@dpdk.org>
Cc: Elena Agostini <eagostini@nvidia.com>
Subject: [PATCH v6] gpudev: manage NULL pointer
Date: Tue, 23 Nov 2021 00:15:42 +0000
Message-ID: <20211123001542.22687-1-eagostini@nvidia.com> (raw)
In-Reply-To: <20211118192802.23955-1-eagostini@nvidia.com>

From: Elena Agostini <eagostini@nvidia.com>

gpudev free and unregister functions return
gracefully if input pointer is NULL because
API doc was indicating NULL as a no-op
accepted value.

cuda driver checks are removed because
redundant with the checks added
in gpudev library.

Fixes: e818c4e2bf50 ("gpudev: add memory API")

Signed-off-by: Elena Agostini <eagostini@nvidia.com>
---
 drivers/gpu/cuda/cuda.c | 8 +-------
 lib/gpudev/gpudev.c     | 9 +++++++++
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/cuda/cuda.c b/drivers/gpu/cuda/cuda.c
index 24ae630d04..f59951f11c 100644
--- a/drivers/gpu/cuda/cuda.c
+++ b/drivers/gpu/cuda/cuda.c
@@ -652,7 +652,7 @@ cuda_mem_register(struct rte_gpu *dev, size_t size, void *ptr)
 	if (dev == NULL)
 		return -ENODEV;
 
-	if (size == 0 || ptr == NULL)
+	if (size == 0)
 		return -EINVAL;
 
 	/* Store current ctx */
@@ -764,9 +764,6 @@ cuda_mem_free(struct rte_gpu *dev, void *ptr)
 	if (dev == NULL)
 		return -ENODEV;
 
-	if (ptr == NULL)
-		return -EINVAL;
-
 	hk = get_hash_from_ptr((void *)ptr);
 
 	mem_item = mem_list_find_item(hk);
@@ -803,9 +800,6 @@ cuda_mem_unregister(struct rte_gpu *dev, void *ptr)
 	if (dev == NULL)
 		return -ENODEV;
 
-	if (ptr == NULL)
-		return -EINVAL;
-
 	hk = get_hash_from_ptr((void *)ptr);
 
 	mem_item = mem_list_find_item(hk);
diff --git a/lib/gpudev/gpudev.c b/lib/gpudev/gpudev.c
index 2b174d8bd5..7aeaf931c3 100644
--- a/lib/gpudev/gpudev.c
+++ b/lib/gpudev/gpudev.c
@@ -576,6 +576,9 @@ rte_gpu_mem_free(int16_t dev_id, void *ptr)
 		return -rte_errno;
 	}
 
+	if (ptr == NULL)
+		return 0;
+
 	if (dev->ops.mem_free == NULL) {
 		rte_errno = ENOTSUP;
 		return -rte_errno;
@@ -595,6 +598,9 @@ rte_gpu_mem_register(int16_t dev_id, size_t size, void *ptr)
 		return -rte_errno;
 	}
 
+	if (ptr == NULL)
+		return 0;
+
 	if (dev->ops.mem_register == NULL) {
 		GPU_LOG(ERR, "mem registration not supported");
 		rte_errno = ENOTSUP;
@@ -619,6 +625,9 @@ rte_gpu_mem_unregister(int16_t dev_id, void *ptr)
 		return -rte_errno;
 	}
 
+	if (ptr == NULL)
+		return 0;
+
 	if (dev->ops.mem_unregister == NULL) {
 		rte_errno = ENOTSUP;
 		return -rte_errno;
-- 
2.17.1


  parent reply	other threads:[~2021-11-22 16:05 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-18 19:28 [PATCH v1] gpudev: return EINVAL if invalid input pointer for free and unregister eagostini
2021-11-18 16:20 ` Stephen Hemminger
2021-11-18 16:22   ` Elena Agostini
2021-11-18 20:19 ` Tyler Retzlaff
2021-11-19  9:34   ` Ferruh Yigit
2021-11-19  9:56     ` Thomas Monjalon
2021-11-24 17:24       ` Tyler Retzlaff
2021-11-24 18:04         ` Bruce Richardson
2021-12-01 21:37           ` Tyler Retzlaff
2021-12-02  7:18             ` Thomas Monjalon
2021-12-02 12:33               ` Morten Brørup
2021-12-02 13:01                 ` Ananyev, Konstantin
2021-12-02 13:56                   ` Morten Brørup
2021-12-03 10:37                     ` Morten Brørup
2021-12-08 17:34                       ` Tyler Retzlaff
2021-12-08 18:40                         ` Morten Brørup
2021-12-09 19:43                           ` Tyler Retzlaff
2021-12-08 17:27                   ` Tyler Retzlaff
2021-11-19 10:15     ` Bruce Richardson
2021-11-18 20:33 ` [PATCH v2] gpudev: free and unregister return gracefully if input pointer is NULL eagostini
2021-11-22 18:24   ` [PATCH v3] gpudev: manage NULL pointer eagostini
2021-11-22 11:23     ` Thomas Monjalon
2021-11-22 11:34       ` Elena Agostini
2021-11-22 11:51         ` Thomas Monjalon
2021-11-22 23:52 ` [PATCH v4] " eagostini
2021-11-22 23:55 ` [PATCH v5] " eagostini
2021-11-22 16:01   ` Thomas Monjalon
2021-11-23  0:15 ` eagostini [this message]
2021-11-23  0:42 ` [PATCH v7] " eagostini
2021-11-24  8:40   ` Thomas Monjalon

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