[dpdk-dev] [PATCH 1/3] ethdev: fix miss input validation in module EEPROM dump API

["Min Hu (Connor)" <humin29@huawei.com>]

From: Chengchang Tang <tangchengchang@huawei.com>

The validity verification of input parameters should be performed at
API layer, not in the PMD.

Fixes: 3a18c44b45df ("ethdev: add access to EEPROM")
Fixes: 40ff8b305ab8 ("net/e1000: add module EEPROM callbacks for e1000")
Fixes: f2088e785cca ("net/i40e: fix dereference before check when getting EEPROM")
Fixes: b74d0cd43e37 ("net/ixgbe: add module EEPROM callbacks for ixgbe")
Fixes: 8a6a09f853a0 ("net/mlx5: support reading module EEPROM data")
Fixes: 58f6f93c34c1 ("net/octeontx2: add module EEPROM dump")
Cc: stable@dpdk.org

Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 drivers/net/e1000/igb_ethdev.c          | 3 ---
 drivers/net/i40e/i40e_ethdev.c          | 3 ---
 drivers/net/ixgbe/ixgbe_ethdev.c        | 3 ---
 drivers/net/mlx5/linux/mlx5_ethdev_os.c | 4 ++--
 drivers/net/octeontx2/otx2_ethdev_ops.c | 3 +--
 lib/librte_ethdev/rte_ethdev.c          | 4 ++++
 lib/librte_ethdev/rte_ethdev.h          | 2 ++
 7 files changed, 9 insertions(+), 13 deletions(-)

diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index 1716d6b..11c73f9 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -5136,9 +5136,6 @@ eth_igb_get_module_eeprom(struct rte_eth_dev *dev,
 	u16 first_word, last_word;
 	int i = 0;
 
-	if (info->length == 0)
-		return -EINVAL;
-
 	first_word = info->offset >> 1;
 	last_word = (info->offset + info->length - 1) >> 1;
 
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 9b86bcd..dbcf5c6 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -11591,9 +11591,6 @@ static int i40e_get_module_eeprom(struct rte_eth_dev *dev,
 	uint32_t value = 0;
 	uint32_t i;
 
-	if (!info || !info->length || !info->data)
-		return -EINVAL;
-
 	if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP)
 		is_sfp = true;
 
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 8a9a21e..45496f3 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -7340,9 +7340,6 @@ ixgbe_get_module_eeprom(struct rte_eth_dev *dev,
 	uint8_t *data = info->data;
 	uint32_t i = 0;
 
-	if (info->length == 0)
-		return -EINVAL;
-
 	for (i = info->offset; i < info->offset + info->length; i++) {
 		if (i < RTE_ETH_MODULE_SFF_8079_LEN)
 			status = hw->phy.ops.read_i2c_eeprom(hw, i, &databyte);
diff --git a/drivers/net/mlx5/linux/mlx5_ethdev_os.c b/drivers/net/mlx5/linux/mlx5_ethdev_os.c
index 0e8de94..ea37c38 100644
--- a/drivers/net/mlx5/linux/mlx5_ethdev_os.c
+++ b/drivers/net/mlx5/linux/mlx5_ethdev_os.c
@@ -1169,7 +1169,7 @@ mlx5_get_module_info(struct rte_eth_dev *dev,
 	};
 	int ret = 0;
 
-	if (!dev || !modinfo) {
+	if (!dev) {
 		DRV_LOG(WARNING, "missing argument, cannot get module info");
 		rte_errno = EINVAL;
 		return -rte_errno;
@@ -1203,7 +1203,7 @@ int mlx5_get_module_eeprom(struct rte_eth_dev *dev,
 	struct ifreq ifr;
 	int ret = 0;
 
-	if (!dev || !info) {
+	if (!dev) {
 		DRV_LOG(WARNING, "missing argument, cannot get module eeprom");
 		rte_errno = EINVAL;
 		return -rte_errno;
diff --git a/drivers/net/octeontx2/otx2_ethdev_ops.c b/drivers/net/octeontx2/otx2_ethdev_ops.c
index 963cc28..9197541 100644
--- a/drivers/net/octeontx2/otx2_ethdev_ops.c
+++ b/drivers/net/octeontx2/otx2_ethdev_ops.c
@@ -533,8 +533,7 @@ otx2_nix_get_module_eeprom(struct rte_eth_dev *eth_dev,
 	struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
 	struct cgx_fw_data *rsp;
 
-	if (!info->data || !info->length ||
-	    (info->offset + info->length > SFP_EEPROM_SIZE))
+	if (info->offset + info->length > SFP_EEPROM_SIZE)
 		return -EINVAL;
 
 	rsp = nix_get_fwdata(dev);
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 3059aa5..bb195ab 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -5335,6 +5335,8 @@ rte_eth_dev_get_module_info(uint16_t port_id,
 	struct rte_eth_dev *dev;
 
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+	if (modinfo == NULL)
+		return -EINVAL;
 
 	dev = &rte_eth_devices[port_id];
 	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->get_module_info, -ENOTSUP);
@@ -5348,6 +5350,8 @@ rte_eth_dev_get_module_eeprom(uint16_t port_id,
 	struct rte_eth_dev *dev;
 
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+	if (info == NULL || info->data == NULL || info->length == 0)
+		return -EINVAL;
 
 	dev = &rte_eth_devices[port_id];
 	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->get_module_eeprom, -ENOTSUP);
diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index efda313..78677a5 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -4446,6 +4446,7 @@ int rte_eth_dev_get_eeprom(uint16_t port_id, struct rte_dev_eeprom_info *info);
  *   - (0) if successful.
  *   - (-ENOTSUP) if hardware doesn't support.
  *   - (-ENODEV) if *port_id* invalid.
+ *   - (-EINVAL) if bad parameter.
  *   - (-EIO) if device is removed.
  *   - others depends on the specific operations implementation.
  */
@@ -4465,6 +4466,7 @@ int rte_eth_dev_set_eeprom(uint16_t port_id, struct rte_dev_eeprom_info *info);
  *   - (0) if successful.
  *   - (-ENOTSUP) if hardware doesn't support.
  *   - (-ENODEV) if *port_id* invalid.
+ *   - (-EINVAL) if bad parameter.
  *   - (-EIO) if device is removed.
  *   - others depends on the specific operations implementation.
  */
-- 
2.7.4