net/mlx4: Add support for EEPROM high pages query for QSFP/QSFP+/QSFP28

Enable reading additional EEPROM information from high pages such as
thresholds and alarms on QSFP/QSFP+/QSFP28 modules.

"This is similar to commit a708fb7 ("net/mlx5e: ethtool, Add
support for EEPROM high pages query") but given all the required logic
already exists in mlx4_qsfp_eeprom_params_set() only s/_LEN/MAX_LEN/ is
needed.

Tested-by: Dan Merillat <[email protected]>
Signed-off-by: Krzysztof Piotr Oledzki <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: ole2pl

drivers/net/ethernet/mellanox/mlx4/en_ethtool.c

@@ -2036,20 +2036,20 @@ static int mlx4_en_get_module_info(struct net_device *dev,
 	switch (data[0] /* identifier */) {
 	case MLX4_MODULE_ID_QSFP:
 		modinfo->type = ETH_MODULE_SFF_8436;
-		modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
+		modinfo->eeprom_len = ETH_MODULE_SFF_8436_MAX_LEN;
 		break;
 	case MLX4_MODULE_ID_QSFP_PLUS:
 		if (data[1] >= 0x3) { /* revision id */
 			modinfo->type = ETH_MODULE_SFF_8636;
-			modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
+			modinfo->eeprom_len = ETH_MODULE_SFF_8636_MAX_LEN;
 		} else {
 			modinfo->type = ETH_MODULE_SFF_8436;
-			modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
+			modinfo->eeprom_len = ETH_MODULE_SFF_8436_MAX_LEN;
 		}
 		break;
 	case MLX4_MODULE_ID_QSFP28:
 		modinfo->type = ETH_MODULE_SFF_8636;
-		modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
+		modinfo->eeprom_len = ETH_MODULE_SFF_8636_MAX_LEN;
 		break;
 	case MLX4_MODULE_ID_SFP:
 		modinfo->type = ETH_MODULE_SFF_8472;