ethdev: validate input in module EEPROM dump

[ upstream commit e2bd08d ]

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

Fixes: 3a18c44 ("ethdev: add access to EEPROM")
Fixes: 40ff8b3 ("net/e1000: add module EEPROM callbacks for e1000")
Fixes: f2088e7 ("net/i40e: fix dereference before check when getting EEPROM")
Fixes: b74d0cd ("net/ixgbe: add module EEPROM callbacks for ixgbe")
Fixes: 8a6a09f ("net/mlx5: support reading module EEPROM data")
Fixes: 58f6f93 ("net/octeontx2: add module EEPROM dump")

Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

drivers/net/e1000/igb_ethdev.c

@@ -5518,9 +5518,6 @@ 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;
 

drivers/net/i40e/i40e_ethdev.c

@@ -12129,9 +12129,6 @@ 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;
 

drivers/net/ixgbe/ixgbe_ethdev.c

@@ -7628,9 +7628,6 @@ 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);

drivers/net/mlx5/mlx5_ethdev.c

@@ -1883,7 +1883,7 @@ 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;
@@ -1917,7 +1917,7 @@ 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;

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);

lib/librte_ethdev/rte_ethdev.c

@@ -4922,6 +4922,8 @@ 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);
@@ -4935,6 +4937,8 @@ 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);

lib/librte_ethdev/rte_ethdev.h

@@ -3920,6 +3920,7 @@ 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.
  */
@@ -3942,6 +3943,7 @@ rte_eth_dev_get_module_info(uint16_t port_id,
  * @return
  *   - (0) if successful.
  *   - (-ENOTSUP) if hardware doesn't support.
+ *   - (-EINVAL) if bad parameter.
  *   - (-ENODEV) if *port_id* invalid.
  *   - (-EIO) if device is removed.
  *   - others depends on the specific operations implementation.