net/ethtool/ioctl.c

2529 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2531 	switch (tuna->id) {
2535 		if (tuna->len != sizeof(u32) ||
2536 		    tuna->type_id != ETHTOOL_TUNABLE_U32)
2540 		if (tuna->len != sizeof(u16) ||
2541 		    tuna->type_id != ETHTOOL_TUNABLE_U16)
2554 	struct ethtool_tunable tuna;
2560 	if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2562 	ret = ethtool_tunable_valid(&tuna);
2565 	data = kzalloc(tuna.len, GFP_USER);
2568 	ret = ops->get_tunable(dev, &tuna, data);
2571 	useraddr += sizeof(tuna);
2573 	if (copy_to_user(useraddr, data, tuna.len))
2585 	struct ethtool_tunable tuna;
2591 	if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2593 	ret = ethtool_tunable_valid(&tuna);
2596 	useraddr += sizeof(tuna);
2597 	data = memdup_user(useraddr, tuna.len);
2600 	ret = ops->set_tunable(dev, &tuna, data);
2720 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2722 	switch (tuna->id) {
2725 		if (tuna->len != sizeof(u8) ||
2726 		    tuna->type_id != ETHTOOL_TUNABLE_U8)
2730 		if (tuna->len != sizeof(u16) ||
2731 		    tuna->type_id != ETHTOOL_TUNABLE_U16)
2744 	struct ethtool_tunable tuna;
2752 	if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2754 	ret = ethtool_phy_tunable_valid(&tuna);
2757 	data = kzalloc(tuna.len, GFP_USER);
2762 		ret = phydev->drv->get_tunable(phydev, &tuna, data);
2765 		ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data);
2769 	useraddr += sizeof(tuna);
2771 	if (copy_to_user(useraddr, data, tuna.len))
2783 	struct ethtool_tunable tuna;
2791 	if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2793 	ret = ethtool_phy_tunable_valid(&tuna);
2796 	useraddr += sizeof(tuna);
2797 	data = memdup_user(useraddr, tuna.len);
2802 		ret = phydev->drv->set_tunable(phydev, &tuna, data);
2805 		ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data);