| /* |
| * net/core/ethtool.c - Ethtool ioctl handler |
| * Copyright (c) 2003 Matthew Wilcox <[email protected]> |
| * |
| * This file is where we call all the ethtool_ops commands to get |
| * the information ethtool needs. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/capability.h> |
| #include <linux/errno.h> |
| #include <linux/ethtool.h> |
| #include <linux/netdevice.h> |
| #include <asm/uaccess.h> |
| |
| /* |
| * Some useful ethtool_ops methods that're device independent. |
| * If we find that all drivers want to do the same thing here, |
| * we can turn these into dev_() function calls. |
| */ |
| |
| u32 ethtool_op_get_link(struct net_device *dev) |
| { |
| return netif_carrier_ok(dev) ? 1 : 0; |
| } |
| |
| u32 ethtool_op_get_tx_csum(struct net_device *dev) |
| { |
| return (dev->features & NETIF_F_ALL_CSUM) != 0; |
| } |
| |
| int ethtool_op_set_tx_csum(struct net_device *dev, u32 data) |
| { |
| if (data) |
| dev->features |= NETIF_F_IP_CSUM; |
| else |
| dev->features &= ~NETIF_F_IP_CSUM; |
| |
| return 0; |
| } |
| |
| int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data) |
| { |
| if (data) |
| dev->features |= NETIF_F_HW_CSUM; |
| else |
| dev->features &= ~NETIF_F_HW_CSUM; |
| |
| return 0; |
| } |
| |
| int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data) |
| { |
| if (data) |
| dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; |
| else |
| dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM); |
| |
| return 0; |
| } |
| |
| u32 ethtool_op_get_sg(struct net_device *dev) |
| { |
| return (dev->features & NETIF_F_SG) != 0; |
| } |
| |
| int ethtool_op_set_sg(struct net_device *dev, u32 data) |
| { |
| if (data) |
| dev->features |= NETIF_F_SG; |
| else |
| dev->features &= ~NETIF_F_SG; |
| |
| return 0; |
| } |
| |
| u32 ethtool_op_get_tso(struct net_device *dev) |
| { |
| return (dev->features & NETIF_F_TSO) != 0; |
| } |
| |
| int ethtool_op_set_tso(struct net_device *dev, u32 data) |
| { |
| if (data) |
| dev->features |= NETIF_F_TSO; |
| else |
| dev->features &= ~NETIF_F_TSO; |
| |
| return 0; |
| } |
| |
| u32 ethtool_op_get_ufo(struct net_device *dev) |
| { |
| return (dev->features & NETIF_F_UFO) != 0; |
| } |
| |
| int ethtool_op_set_ufo(struct net_device *dev, u32 data) |
| { |
| if (data) |
| dev->features |= NETIF_F_UFO; |
| else |
| dev->features &= ~NETIF_F_UFO; |
| return 0; |
| } |
| |
| /* the following list of flags are the same as their associated |
| * NETIF_F_xxx values in include/linux/netdevice.h |
| */ |
| static const u32 flags_dup_features = |
| ETH_FLAG_LRO; |
| |
| u32 ethtool_op_get_flags(struct net_device *dev) |
| { |
| /* in the future, this function will probably contain additional |
| * handling for flags which are not so easily handled |
| * by a simple masking operation |
| */ |
| |
| return dev->features & flags_dup_features; |
| } |
| |
| int ethtool_op_set_flags(struct net_device *dev, u32 data) |
| { |
| if (data & ETH_FLAG_LRO) |
| dev->features |= NETIF_F_LRO; |
| else |
| dev->features &= ~NETIF_F_LRO; |
| |
| return 0; |
| } |
| |
| /* Handlers for each ethtool command */ |
| |
| static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_cmd cmd = { ETHTOOL_GSET }; |
| int err; |
| |
| if (!dev->ethtool_ops->get_settings) |
| return -EOPNOTSUPP; |
| |
| err = dev->ethtool_ops->get_settings(dev, &cmd); |
| if (err < 0) |
| return err; |
| |
| if (copy_to_user(useraddr, &cmd, sizeof(cmd))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_cmd cmd; |
| |
| if (!dev->ethtool_ops->set_settings) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&cmd, useraddr, sizeof(cmd))) |
| return -EFAULT; |
| |
| return dev->ethtool_ops->set_settings(dev, &cmd); |
| } |
| |
| static int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_drvinfo info; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| |
| if (!ops->get_drvinfo) |
| return -EOPNOTSUPP; |
| |
| memset(&info, 0, sizeof(info)); |
| info.cmd = ETHTOOL_GDRVINFO; |
| ops->get_drvinfo(dev, &info); |
| |
| if (ops->get_sset_count) { |
| int rc; |
| |
| rc = ops->get_sset_count(dev, ETH_SS_TEST); |
| if (rc >= 0) |
| info.testinfo_len = rc; |
| rc = ops->get_sset_count(dev, ETH_SS_STATS); |
| if (rc >= 0) |
| info.n_stats = rc; |
| rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); |
| if (rc >= 0) |
| info.n_priv_flags = rc; |
| } else { |
| /* code path for obsolete hooks */ |
| |
| if (ops->self_test_count) |
| info.testinfo_len = ops->self_test_count(dev); |
| if (ops->get_stats_count) |
| info.n_stats = ops->get_stats_count(dev); |
| } |
| if (ops->get_regs_len) |
| info.regdump_len = ops->get_regs_len(dev); |
| if (ops->get_eeprom_len) |
| info.eedump_len = ops->get_eeprom_len(dev); |
| |
| if (copy_to_user(useraddr, &info, sizeof(info))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_rxnfc(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_rxnfc cmd; |
| |
| if (!dev->ethtool_ops->set_rxnfc) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&cmd, useraddr, sizeof(cmd))) |
| return -EFAULT; |
| |
| return dev->ethtool_ops->set_rxnfc(dev, &cmd); |
| } |
| |
| static int ethtool_get_rxnfc(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_rxnfc info; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| int ret; |
| void *rule_buf = NULL; |
| |
| if (!ops->get_rxnfc) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&info, useraddr, sizeof(info))) |
| return -EFAULT; |
| |
| if (info.cmd == ETHTOOL_GRXCLSRLALL) { |
| if (info.rule_cnt > 0) { |
| rule_buf = kmalloc(info.rule_cnt * sizeof(u32), |
| GFP_USER); |
| if (!rule_buf) |
| return -ENOMEM; |
| } |
| } |
| |
| ret = ops->get_rxnfc(dev, &info, rule_buf); |
| if (ret < 0) |
| goto err_out; |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, &info, sizeof(info))) |
| goto err_out; |
| |
| if (rule_buf) { |
| useraddr += offsetof(struct ethtool_rxnfc, rule_locs); |
| if (copy_to_user(useraddr, rule_buf, |
| info.rule_cnt * sizeof(u32))) |
| goto err_out; |
| } |
| ret = 0; |
| |
| err_out: |
| kfree(rule_buf); |
| |
| return ret; |
| } |
| |
| static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_regs regs; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| void *regbuf; |
| int reglen, ret; |
| |
| if (!ops->get_regs || !ops->get_regs_len) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(®s, useraddr, sizeof(regs))) |
| return -EFAULT; |
| |
| reglen = ops->get_regs_len(dev); |
| if (regs.len > reglen) |
| regs.len = reglen; |
| |
| regbuf = kmalloc(reglen, GFP_USER); |
| if (!regbuf) |
| return -ENOMEM; |
| |
| ops->get_regs(dev, ®s, regbuf); |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, ®s, sizeof(regs))) |
| goto out; |
| useraddr += offsetof(struct ethtool_regs, data); |
| if (copy_to_user(useraddr, regbuf, regs.len)) |
| goto out; |
| ret = 0; |
| |
| out: |
| kfree(regbuf); |
| return ret; |
| } |
| |
| static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_wolinfo wol = { ETHTOOL_GWOL }; |
| |
| if (!dev->ethtool_ops->get_wol) |
| return -EOPNOTSUPP; |
| |
| dev->ethtool_ops->get_wol(dev, &wol); |
| |
| if (copy_to_user(useraddr, &wol, sizeof(wol))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_wolinfo wol; |
| |
| if (!dev->ethtool_ops->set_wol) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&wol, useraddr, sizeof(wol))) |
| return -EFAULT; |
| |
| return dev->ethtool_ops->set_wol(dev, &wol); |
| } |
| |
| static int ethtool_nway_reset(struct net_device *dev) |
| { |
| if (!dev->ethtool_ops->nway_reset) |
| return -EOPNOTSUPP; |
| |
| return dev->ethtool_ops->nway_reset(dev); |
| } |
| |
| static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_eeprom eeprom; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| void __user *userbuf = useraddr + sizeof(eeprom); |
| u32 bytes_remaining; |
| u8 *data; |
| int ret = 0; |
| |
| if (!ops->get_eeprom || !ops->get_eeprom_len) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) |
| return -EFAULT; |
| |
| /* Check for wrap and zero */ |
| if (eeprom.offset + eeprom.len <= eeprom.offset) |
| return -EINVAL; |
| |
| /* Check for exceeding total eeprom len */ |
| if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) |
| return -EINVAL; |
| |
| data = kmalloc(PAGE_SIZE, GFP_USER); |
| if (!data) |
| return -ENOMEM; |
| |
| bytes_remaining = eeprom.len; |
| while (bytes_remaining > 0) { |
| eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); |
| |
| ret = ops->get_eeprom(dev, &eeprom, data); |
| if (ret) |
| break; |
| if (copy_to_user(userbuf, data, eeprom.len)) { |
| ret = -EFAULT; |
| break; |
| } |
| userbuf += eeprom.len; |
| eeprom.offset += eeprom.len; |
| bytes_remaining -= eeprom.len; |
| } |
| |
| eeprom.len = userbuf - (useraddr + sizeof(eeprom)); |
| eeprom.offset -= eeprom.len; |
| if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) |
| ret = -EFAULT; |
| |
| kfree(data); |
| return ret; |
| } |
| |
| static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_eeprom eeprom; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| void __user *userbuf = useraddr + sizeof(eeprom); |
| u32 bytes_remaining; |
| u8 *data; |
| int ret = 0; |
| |
| if (!ops->set_eeprom || !ops->get_eeprom_len) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) |
| return -EFAULT; |
| |
| /* Check for wrap and zero */ |
| if (eeprom.offset + eeprom.len <= eeprom.offset) |
| return -EINVAL; |
| |
| /* Check for exceeding total eeprom len */ |
| if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) |
| return -EINVAL; |
| |
| data = kmalloc(PAGE_SIZE, GFP_USER); |
| if (!data) |
| return -ENOMEM; |
| |
| bytes_remaining = eeprom.len; |
| while (bytes_remaining > 0) { |
| eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); |
| |
| if (copy_from_user(data, userbuf, eeprom.len)) { |
| ret = -EFAULT; |
| break; |
| } |
| ret = ops->set_eeprom(dev, &eeprom, data); |
| if (ret) |
| break; |
| userbuf += eeprom.len; |
| eeprom.offset += eeprom.len; |
| bytes_remaining -= eeprom.len; |
| } |
| |
| kfree(data); |
| return ret; |
| } |
| |
| static int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_coalesce coalesce = { ETHTOOL_GCOALESCE }; |
| |
| if (!dev->ethtool_ops->get_coalesce) |
| return -EOPNOTSUPP; |
| |
| dev->ethtool_ops->get_coalesce(dev, &coalesce); |
| |
| if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_coalesce coalesce; |
| |
| if (!dev->ethtool_ops->set_coalesce) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) |
| return -EFAULT; |
| |
| return dev->ethtool_ops->set_coalesce(dev, &coalesce); |
| } |
| |
| static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_ringparam ringparam = { ETHTOOL_GRINGPARAM }; |
| |
| if (!dev->ethtool_ops->get_ringparam) |
| return -EOPNOTSUPP; |
| |
| dev->ethtool_ops->get_ringparam(dev, &ringparam); |
| |
| if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_ringparam ringparam; |
| |
| if (!dev->ethtool_ops->set_ringparam) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) |
| return -EFAULT; |
| |
| return dev->ethtool_ops->set_ringparam(dev, &ringparam); |
| } |
| |
| static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM }; |
| |
| if (!dev->ethtool_ops->get_pauseparam) |
| return -EOPNOTSUPP; |
| |
| dev->ethtool_ops->get_pauseparam(dev, &pauseparam); |
| |
| if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_pauseparam pauseparam; |
| |
| if (!dev->ethtool_ops->set_pauseparam) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) |
| return -EFAULT; |
| |
| return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); |
| } |
| |
| static int __ethtool_set_sg(struct net_device *dev, u32 data) |
| { |
| int err; |
| |
| if (!data && dev->ethtool_ops->set_tso) { |
| err = dev->ethtool_ops->set_tso(dev, 0); |
| if (err) |
| return err; |
| } |
| |
| if (!data && dev->ethtool_ops->set_ufo) { |
| err = dev->ethtool_ops->set_ufo(dev, 0); |
| if (err) |
| return err; |
| } |
| return dev->ethtool_ops->set_sg(dev, data); |
| } |
| |
| static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_value edata; |
| int err; |
| |
| if (!dev->ethtool_ops->set_tx_csum) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| |
| if (!edata.data && dev->ethtool_ops->set_sg) { |
| err = __ethtool_set_sg(dev, 0); |
| if (err) |
| return err; |
| } |
| |
| return dev->ethtool_ops->set_tx_csum(dev, edata.data); |
| } |
| |
| static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_value edata; |
| |
| if (!dev->ethtool_ops->set_rx_csum) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| |
| if (!edata.data && dev->ethtool_ops->set_sg) |
| dev->features &= ~NETIF_F_GRO; |
| |
| return dev->ethtool_ops->set_rx_csum(dev, edata.data); |
| } |
| |
| static int ethtool_set_sg(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_value edata; |
| |
| if (!dev->ethtool_ops->set_sg) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| |
| if (edata.data && |
| !(dev->features & NETIF_F_ALL_CSUM)) |
| return -EINVAL; |
| |
| return __ethtool_set_sg(dev, edata.data); |
| } |
| |
| static int ethtool_set_tso(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_value edata; |
| |
| if (!dev->ethtool_ops->set_tso) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| |
| if (edata.data && !(dev->features & NETIF_F_SG)) |
| return -EINVAL; |
| |
| return dev->ethtool_ops->set_tso(dev, edata.data); |
| } |
| |
| static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_value edata; |
| |
| if (!dev->ethtool_ops->set_ufo) |
| return -EOPNOTSUPP; |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| if (edata.data && !(dev->features & NETIF_F_SG)) |
| return -EINVAL; |
| if (edata.data && !(dev->features & NETIF_F_HW_CSUM)) |
| return -EINVAL; |
| return dev->ethtool_ops->set_ufo(dev, edata.data); |
| } |
| |
| static int ethtool_get_gso(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_value edata = { ETHTOOL_GGSO }; |
| |
| edata.data = dev->features & NETIF_F_GSO; |
| if (copy_to_user(useraddr, &edata, sizeof(edata))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_gso(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_value edata; |
| |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| if (edata.data) |
| dev->features |= NETIF_F_GSO; |
| else |
| dev->features &= ~NETIF_F_GSO; |
| return 0; |
| } |
| |
| static int ethtool_get_gro(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_value edata = { ETHTOOL_GGRO }; |
| |
| edata.data = dev->features & NETIF_F_GRO; |
| if (copy_to_user(useraddr, &edata, sizeof(edata))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_gro(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_value edata; |
| |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| |
| if (edata.data) { |
| if (!dev->ethtool_ops->get_rx_csum || |
| !dev->ethtool_ops->get_rx_csum(dev)) |
| return -EINVAL; |
| dev->features |= NETIF_F_GRO; |
| } else |
| dev->features &= ~NETIF_F_GRO; |
| |
| return 0; |
| } |
| |
| static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_test test; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| u64 *data; |
| int ret, test_len; |
| |
| if (!ops->self_test) |
| return -EOPNOTSUPP; |
| if (!ops->get_sset_count && !ops->self_test_count) |
| return -EOPNOTSUPP; |
| |
| if (ops->get_sset_count) |
| test_len = ops->get_sset_count(dev, ETH_SS_TEST); |
| else |
| /* code path for obsolete hook */ |
| test_len = ops->self_test_count(dev); |
| if (test_len < 0) |
| return test_len; |
| WARN_ON(test_len == 0); |
| |
| if (copy_from_user(&test, useraddr, sizeof(test))) |
| return -EFAULT; |
| |
| test.len = test_len; |
| data = kmalloc(test_len * sizeof(u64), GFP_USER); |
| if (!data) |
| return -ENOMEM; |
| |
| ops->self_test(dev, &test, data); |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, &test, sizeof(test))) |
| goto out; |
| useraddr += sizeof(test); |
| if (copy_to_user(useraddr, data, test.len * sizeof(u64))) |
| goto out; |
| ret = 0; |
| |
| out: |
| kfree(data); |
| return ret; |
| } |
| |
| static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_gstrings gstrings; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| u8 *data; |
| int ret; |
| |
| if (!ops->get_strings) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) |
| return -EFAULT; |
| |
| if (ops->get_sset_count) { |
| ret = ops->get_sset_count(dev, gstrings.string_set); |
| if (ret < 0) |
| return ret; |
| |
| gstrings.len = ret; |
| } else { |
| /* code path for obsolete hooks */ |
| |
| switch (gstrings.string_set) { |
| case ETH_SS_TEST: |
| if (!ops->self_test_count) |
| return -EOPNOTSUPP; |
| gstrings.len = ops->self_test_count(dev); |
| break; |
| case ETH_SS_STATS: |
| if (!ops->get_stats_count) |
| return -EOPNOTSUPP; |
| gstrings.len = ops->get_stats_count(dev); |
| break; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER); |
| if (!data) |
| return -ENOMEM; |
| |
| ops->get_strings(dev, gstrings.string_set, data); |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) |
| goto out; |
| useraddr += sizeof(gstrings); |
| if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) |
| goto out; |
| ret = 0; |
| |
| out: |
| kfree(data); |
| return ret; |
| } |
| |
| static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_value id; |
| |
| if (!dev->ethtool_ops->phys_id) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&id, useraddr, sizeof(id))) |
| return -EFAULT; |
| |
| return dev->ethtool_ops->phys_id(dev, id.data); |
| } |
| |
| static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_stats stats; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| u64 *data; |
| int ret, n_stats; |
| |
| if (!ops->get_ethtool_stats) |
| return -EOPNOTSUPP; |
| if (!ops->get_sset_count && !ops->get_stats_count) |
| return -EOPNOTSUPP; |
| |
| if (ops->get_sset_count) |
| n_stats = ops->get_sset_count(dev, ETH_SS_STATS); |
| else |
| /* code path for obsolete hook */ |
| n_stats = ops->get_stats_count(dev); |
| if (n_stats < 0) |
| return n_stats; |
| WARN_ON(n_stats == 0); |
| |
| if (copy_from_user(&stats, useraddr, sizeof(stats))) |
| return -EFAULT; |
| |
| stats.n_stats = n_stats; |
| data = kmalloc(n_stats * sizeof(u64), GFP_USER); |
| if (!data) |
| return -ENOMEM; |
| |
| ops->get_ethtool_stats(dev, &stats, data); |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, &stats, sizeof(stats))) |
| goto out; |
| useraddr += sizeof(stats); |
| if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) |
| goto out; |
| ret = 0; |
| |
| out: |
| kfree(data); |
| return ret; |
| } |
| |
| static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_perm_addr epaddr; |
| |
| if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
| return -EFAULT; |
| |
| if (epaddr.size < dev->addr_len) |
| return -ETOOSMALL; |
| epaddr.size = dev->addr_len; |
| |
| if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
| return -EFAULT; |
| useraddr += sizeof(epaddr); |
| if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
| u32 cmd, u32 (*actor)(struct net_device *)) |
| { |
| struct ethtool_value edata = { cmd }; |
| |
| if (!actor) |
| return -EOPNOTSUPP; |
| |
| edata.data = actor(dev); |
| |
| if (copy_to_user(useraddr, &edata, sizeof(edata))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
| void (*actor)(struct net_device *, u32)) |
| { |
| struct ethtool_value edata; |
| |
| if (!actor) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| |
| actor(dev, edata.data); |
| return 0; |
| } |
| |
| static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
| int (*actor)(struct net_device *, u32)) |
| { |
| struct ethtool_value edata; |
| |
| if (!actor) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| |
| return actor(dev, edata.data); |
| } |
| |
| /* The main entry point in this file. Called from net/core/dev.c */ |
| |
| int dev_ethtool(struct net *net, struct ifreq *ifr) |
| { |
| struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); |
| void __user *useraddr = ifr->ifr_data; |
| u32 ethcmd; |
| int rc; |
| unsigned long old_features; |
| |
| if (!dev || !netif_device_present(dev)) |
| return -ENODEV; |
| |
| if (!dev->ethtool_ops) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd))) |
| return -EFAULT; |
| |
| /* Allow some commands to be done by anyone */ |
| switch(ethcmd) { |
| case ETHTOOL_GDRVINFO: |
| case ETHTOOL_GMSGLVL: |
| case ETHTOOL_GCOALESCE: |
| case ETHTOOL_GRINGPARAM: |
| case ETHTOOL_GPAUSEPARAM: |
| case ETHTOOL_GRXCSUM: |
| case ETHTOOL_GTXCSUM: |
| case ETHTOOL_GSG: |
| case ETHTOOL_GSTRINGS: |
| case ETHTOOL_GTSO: |
| case ETHTOOL_GPERMADDR: |
| case ETHTOOL_GUFO: |
| case ETHTOOL_GGSO: |
| case ETHTOOL_GFLAGS: |
| case ETHTOOL_GPFLAGS: |
| case ETHTOOL_GRXFH: |
| case ETHTOOL_GRXRINGS: |
| case ETHTOOL_GRXCLSRLCNT: |
| case ETHTOOL_GRXCLSRULE: |
| case ETHTOOL_GRXCLSRLALL: |
| break; |
| default: |
| if (!capable(CAP_NET_ADMIN)) |
| return -EPERM; |
| } |
| |
| if (dev->ethtool_ops->begin) |
| if ((rc = dev->ethtool_ops->begin(dev)) < 0) |
| return rc; |
| |
| old_features = dev->features; |
| |
| switch (ethcmd) { |
| case ETHTOOL_GSET: |
| rc = ethtool_get_settings(dev, useraddr); |
| break; |
| case ETHTOOL_SSET: |
| rc = ethtool_set_settings(dev, useraddr); |
| break; |
| case ETHTOOL_GDRVINFO: |
| rc = ethtool_get_drvinfo(dev, useraddr); |
| break; |
| case ETHTOOL_GREGS: |
| rc = ethtool_get_regs(dev, useraddr); |
| break; |
| case ETHTOOL_GWOL: |
| rc = ethtool_get_wol(dev, useraddr); |
| break; |
| case ETHTOOL_SWOL: |
| rc = ethtool_set_wol(dev, useraddr); |
| break; |
| case ETHTOOL_GMSGLVL: |
| rc = ethtool_get_value(dev, useraddr, ethcmd, |
| dev->ethtool_ops->get_msglevel); |
| break; |
| case ETHTOOL_SMSGLVL: |
| rc = ethtool_set_value_void(dev, useraddr, |
| dev->ethtool_ops->set_msglevel); |
| break; |
| case ETHTOOL_NWAY_RST: |
| rc = ethtool_nway_reset(dev); |
| break; |
| case ETHTOOL_GLINK: |
| rc = ethtool_get_value(dev, useraddr, ethcmd, |
| dev->ethtool_ops->get_link); |
| break; |
| case ETHTOOL_GEEPROM: |
| rc = ethtool_get_eeprom(dev, useraddr); |
| break; |
| case ETHTOOL_SEEPROM: |
| rc = ethtool_set_eeprom(dev, useraddr); |
| break; |
| case ETHTOOL_GCOALESCE: |
| rc = ethtool_get_coalesce(dev, useraddr); |
| break; |
| case ETHTOOL_SCOALESCE: |
| rc = ethtool_set_coalesce(dev, useraddr); |
| break; |
| case ETHTOOL_GRINGPARAM: |
| rc = ethtool_get_ringparam(dev, useraddr); |
| break; |
| case ETHTOOL_SRINGPARAM: |
| rc = ethtool_set_ringparam(dev, useraddr); |
| break; |
| case ETHTOOL_GPAUSEPARAM: |
| rc = ethtool_get_pauseparam(dev, useraddr); |
| break; |
| case ETHTOOL_SPAUSEPARAM: |
| rc = ethtool_set_pauseparam(dev, useraddr); |
| break; |
| case ETHTOOL_GRXCSUM: |
| rc = ethtool_get_value(dev, useraddr, ethcmd, |
| dev->ethtool_ops->get_rx_csum); |
| break; |
| case ETHTOOL_SRXCSUM: |
| rc = ethtool_set_rx_csum(dev, useraddr); |
| break; |
| case ETHTOOL_GTXCSUM: |
| rc = ethtool_get_value(dev, useraddr, ethcmd, |
| (dev->ethtool_ops->get_tx_csum ? |
| dev->ethtool_ops->get_tx_csum : |
| ethtool_op_get_tx_csum)); |
| break; |
| case ETHTOOL_STXCSUM: |
| rc = ethtool_set_tx_csum(dev, useraddr); |
| break; |
| case ETHTOOL_GSG: |
| rc = ethtool_get_value(dev, useraddr, ethcmd, |
| (dev->ethtool_ops->get_sg ? |
| dev->ethtool_ops->get_sg : |
| ethtool_op_get_sg)); |
| break; |
| case ETHTOOL_SSG: |
| rc = ethtool_set_sg(dev, useraddr); |
| break; |
| case ETHTOOL_GTSO: |
| rc = ethtool_get_value(dev, useraddr, ethcmd, |
| (dev->ethtool_ops->get_tso ? |
| dev->ethtool_ops->get_tso : |
| ethtool_op_get_tso)); |
| break; |
| case ETHTOOL_STSO: |
| rc = ethtool_set_tso(dev, useraddr); |
| break; |
| case ETHTOOL_TEST: |
| rc = ethtool_self_test(dev, useraddr); |
| break; |
| case ETHTOOL_GSTRINGS: |
| rc = ethtool_get_strings(dev, useraddr); |
| break; |
| case ETHTOOL_PHYS_ID: |
| rc = ethtool_phys_id(dev, useraddr); |
| break; |
| case ETHTOOL_GSTATS: |
| rc = ethtool_get_stats(dev, useraddr); |
| break; |
| case ETHTOOL_GPERMADDR: |
| rc = ethtool_get_perm_addr(dev, useraddr); |
| break; |
| case ETHTOOL_GUFO: |
| rc = ethtool_get_value(dev, useraddr, ethcmd, |
| (dev->ethtool_ops->get_ufo ? |
| dev->ethtool_ops->get_ufo : |
| ethtool_op_get_ufo)); |
| break; |
| case ETHTOOL_SUFO: |
| rc = ethtool_set_ufo(dev, useraddr); |
| break; |
| case ETHTOOL_GGSO: |
| rc = ethtool_get_gso(dev, useraddr); |
| break; |
| case ETHTOOL_SGSO: |
| rc = ethtool_set_gso(dev, useraddr); |
| break; |
| case ETHTOOL_GFLAGS: |
| rc = ethtool_get_value(dev, useraddr, ethcmd, |
| dev->ethtool_ops->get_flags); |
| break; |
| case ETHTOOL_SFLAGS: |
| rc = ethtool_set_value(dev, useraddr, |
| dev->ethtool_ops->set_flags); |
| break; |
| case ETHTOOL_GPFLAGS: |
| rc = ethtool_get_value(dev, useraddr, ethcmd, |
| dev->ethtool_ops->get_priv_flags); |
| break; |
| case ETHTOOL_SPFLAGS: |
| rc = ethtool_set_value(dev, useraddr, |
| dev->ethtool_ops->set_priv_flags); |
| break; |
| case ETHTOOL_GRXFH: |
| case ETHTOOL_GRXRINGS: |
| case ETHTOOL_GRXCLSRLCNT: |
| case ETHTOOL_GRXCLSRULE: |
| case ETHTOOL_GRXCLSRLALL: |
| rc = ethtool_get_rxnfc(dev, useraddr); |
| break; |
| case ETHTOOL_SRXFH: |
| case ETHTOOL_SRXCLSRLDEL: |
| case ETHTOOL_SRXCLSRLINS: |
| rc = ethtool_set_rxnfc(dev, useraddr); |
| break; |
| case ETHTOOL_GGRO: |
| rc = ethtool_get_gro(dev, useraddr); |
| break; |
| case ETHTOOL_SGRO: |
| rc = ethtool_set_gro(dev, useraddr); |
| break; |
| default: |
| rc = -EOPNOTSUPP; |
| } |
| |
| if (dev->ethtool_ops->complete) |
| dev->ethtool_ops->complete(dev); |
| |
| if (old_features != dev->features) |
| netdev_features_change(dev); |
| |
| return rc; |
| } |
| |
| EXPORT_SYMBOL(ethtool_op_get_link); |
| EXPORT_SYMBOL(ethtool_op_get_sg); |
| EXPORT_SYMBOL(ethtool_op_get_tso); |
| EXPORT_SYMBOL(ethtool_op_get_tx_csum); |
| EXPORT_SYMBOL(ethtool_op_set_sg); |
| EXPORT_SYMBOL(ethtool_op_set_tso); |
| EXPORT_SYMBOL(ethtool_op_set_tx_csum); |
| EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum); |
| EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum); |
| EXPORT_SYMBOL(ethtool_op_set_ufo); |
| EXPORT_SYMBOL(ethtool_op_get_ufo); |
| EXPORT_SYMBOL(ethtool_op_set_flags); |
| EXPORT_SYMBOL(ethtool_op_get_flags); |
