diff options
Diffstat (limited to 'net/core/dev_ioctl.c')
| -rw-r--r-- | net/core/dev_ioctl.c | 817 |
1 files changed, 817 insertions, 0 deletions
diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c new file mode 100644 index 000000000..b46aedc36 --- /dev/null +++ b/net/core/dev_ioctl.c @@ -0,0 +1,817 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/kmod.h> +#include <linux/netdevice.h> +#include <linux/inetdevice.h> +#include <linux/etherdevice.h> +#include <linux/rtnetlink.h> +#include <linux/net_tstamp.h> +#include <linux/phylib_stubs.h> +#include <linux/wireless.h> +#include <linux/if_bridge.h> +#include <net/dsa_stubs.h> +#include <net/wext.h> + +#include "dev.h" + +/* + * Map an interface index to its name (SIOCGIFNAME) + */ + +/* + * We need this ioctl for efficient implementation of the + * if_indextoname() function required by the IPv6 API. Without + * it, we would have to search all the interfaces to find a + * match. --pb + */ + +static int dev_ifname(struct net *net, struct ifreq *ifr) +{ + ifr->ifr_name[IFNAMSIZ-1] = 0; + return netdev_get_name(net, ifr->ifr_name, ifr->ifr_ifindex); +} + +/* + * Perform a SIOCGIFCONF call. This structure will change + * size eventually, and there is nothing I can do about it. + * Thus we will need a 'compatibility mode'. + */ +int dev_ifconf(struct net *net, struct ifconf __user *uifc) +{ + struct net_device *dev; + void __user *pos; + size_t size; + int len, total = 0, done; + + /* both the ifconf and the ifreq structures are slightly different */ + if (in_compat_syscall()) { + struct compat_ifconf ifc32; + + if (copy_from_user(&ifc32, uifc, sizeof(struct compat_ifconf))) + return -EFAULT; + + pos = compat_ptr(ifc32.ifcbuf); + len = ifc32.ifc_len; + size = sizeof(struct compat_ifreq); + } else { + struct ifconf ifc; + + if (copy_from_user(&ifc, uifc, sizeof(struct ifconf))) + return -EFAULT; + + pos = ifc.ifc_buf; + len = ifc.ifc_len; + size = sizeof(struct ifreq); + } + + /* Loop over the interfaces, and write an info block for each. */ + rtnl_lock(); + for_each_netdev(net, dev) { + if (!pos) + done = inet_gifconf(dev, NULL, 0, size); + else + done = inet_gifconf(dev, pos + total, + len - total, size); + if (done < 0) { + rtnl_unlock(); + return -EFAULT; + } + total += done; + } + rtnl_unlock(); + + return put_user(total, &uifc->ifc_len); +} + +static int dev_getifmap(struct net_device *dev, struct ifreq *ifr) +{ + struct ifmap *ifmap = &ifr->ifr_map; + + if (in_compat_syscall()) { + struct compat_ifmap *cifmap = (struct compat_ifmap *)ifmap; + + cifmap->mem_start = dev->mem_start; + cifmap->mem_end = dev->mem_end; + cifmap->base_addr = dev->base_addr; + cifmap->irq = dev->irq; + cifmap->dma = dev->dma; + cifmap->port = dev->if_port; + + return 0; + } + + ifmap->mem_start = dev->mem_start; + ifmap->mem_end = dev->mem_end; + ifmap->base_addr = dev->base_addr; + ifmap->irq = dev->irq; + ifmap->dma = dev->dma; + ifmap->port = dev->if_port; + + return 0; +} + +static int dev_setifmap(struct net_device *dev, struct ifreq *ifr) +{ + struct compat_ifmap *cifmap = (struct compat_ifmap *)&ifr->ifr_map; + + if (!dev->netdev_ops->ndo_set_config) + return -EOPNOTSUPP; + + if (in_compat_syscall()) { + struct ifmap ifmap = { + .mem_start = cifmap->mem_start, + .mem_end = cifmap->mem_end, + .base_addr = cifmap->base_addr, + .irq = cifmap->irq, + .dma = cifmap->dma, + .port = cifmap->port, + }; + + return dev->netdev_ops->ndo_set_config(dev, &ifmap); + } + + return dev->netdev_ops->ndo_set_config(dev, &ifr->ifr_map); +} + +/* + * Perform the SIOCxIFxxx calls, inside rcu_read_lock() + */ +static int dev_ifsioc_locked(struct net *net, struct ifreq *ifr, unsigned int cmd) +{ + int err; + struct net_device *dev = dev_get_by_name_rcu(net, ifr->ifr_name); + + if (!dev) + return -ENODEV; + + switch (cmd) { + case SIOCGIFFLAGS: /* Get interface flags */ + ifr->ifr_flags = (short) dev_get_flags(dev); + return 0; + + case SIOCGIFMETRIC: /* Get the metric on the interface + (currently unused) */ + ifr->ifr_metric = 0; + return 0; + + case SIOCGIFMTU: /* Get the MTU of a device */ + ifr->ifr_mtu = dev->mtu; + return 0; + + case SIOCGIFSLAVE: + err = -EINVAL; + break; + + case SIOCGIFMAP: + return dev_getifmap(dev, ifr); + + case SIOCGIFINDEX: + ifr->ifr_ifindex = dev->ifindex; + return 0; + + case SIOCGIFTXQLEN: + ifr->ifr_qlen = dev->tx_queue_len; + return 0; + + default: + /* dev_ioctl() should ensure this case + * is never reached + */ + WARN_ON(1); + err = -ENOTTY; + break; + + } + return err; +} + +static int net_hwtstamp_validate(const struct kernel_hwtstamp_config *cfg) +{ + enum hwtstamp_tx_types tx_type; + enum hwtstamp_rx_filters rx_filter; + int tx_type_valid = 0; + int rx_filter_valid = 0; + + if (cfg->flags & ~HWTSTAMP_FLAG_MASK) + return -EINVAL; + + tx_type = cfg->tx_type; + rx_filter = cfg->rx_filter; + + switch (tx_type) { + case HWTSTAMP_TX_OFF: + case HWTSTAMP_TX_ON: + case HWTSTAMP_TX_ONESTEP_SYNC: + case HWTSTAMP_TX_ONESTEP_P2P: + tx_type_valid = 1; + break; + case __HWTSTAMP_TX_CNT: + /* not a real value */ + break; + } + + switch (rx_filter) { + case HWTSTAMP_FILTER_NONE: + case HWTSTAMP_FILTER_ALL: + case HWTSTAMP_FILTER_SOME: + case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_SYNC: + case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: + case HWTSTAMP_FILTER_NTP_ALL: + rx_filter_valid = 1; + break; + case __HWTSTAMP_FILTER_CNT: + /* not a real value */ + break; + } + + if (!tx_type_valid || !rx_filter_valid) + return -ERANGE; + + return 0; +} + +static int dev_eth_ioctl(struct net_device *dev, + struct ifreq *ifr, unsigned int cmd) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if (!ops->ndo_eth_ioctl) + return -EOPNOTSUPP; + + if (!netif_device_present(dev)) + return -ENODEV; + + return ops->ndo_eth_ioctl(dev, ifr, cmd); +} + +/** + * dev_get_hwtstamp_phylib() - Get hardware timestamping settings of NIC + * or of attached phylib PHY + * @dev: Network device + * @cfg: Timestamping configuration structure + * + * Helper for enforcing a common policy that phylib timestamping, if available, + * should take precedence in front of hardware timestamping provided by the + * netdev. + * + * Note: phy_mii_ioctl() only handles SIOCSHWTSTAMP (not SIOCGHWTSTAMP), and + * there only exists a phydev->mii_ts->hwtstamp() method. So this will return + * -EOPNOTSUPP for phylib for now, which is still more accurate than letting + * the netdev handle the GET request. + */ +static int dev_get_hwtstamp_phylib(struct net_device *dev, + struct kernel_hwtstamp_config *cfg) +{ + if (phy_has_hwtstamp(dev->phydev)) + return phy_hwtstamp_get(dev->phydev, cfg); + + return dev->netdev_ops->ndo_hwtstamp_get(dev, cfg); +} + +static int dev_get_hwtstamp(struct net_device *dev, struct ifreq *ifr) +{ + const struct net_device_ops *ops = dev->netdev_ops; + struct kernel_hwtstamp_config kernel_cfg = {}; + struct hwtstamp_config cfg; + int err; + + if (!ops->ndo_hwtstamp_get) + return dev_eth_ioctl(dev, ifr, SIOCGHWTSTAMP); /* legacy */ + + if (!netif_device_present(dev)) + return -ENODEV; + + kernel_cfg.ifr = ifr; + err = dev_get_hwtstamp_phylib(dev, &kernel_cfg); + if (err) + return err; + + /* If the request was resolved through an unconverted driver, omit + * the copy_to_user(), since the implementation has already done that + */ + if (!kernel_cfg.copied_to_user) { + hwtstamp_config_from_kernel(&cfg, &kernel_cfg); + + if (copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg))) + return -EFAULT; + } + + return 0; +} + +/** + * dev_set_hwtstamp_phylib() - Change hardware timestamping of NIC + * or of attached phylib PHY + * @dev: Network device + * @cfg: Timestamping configuration structure + * @extack: Netlink extended ack message structure, for error reporting + * + * Helper for enforcing a common policy that phylib timestamping, if available, + * should take precedence in front of hardware timestamping provided by the + * netdev. If the netdev driver needs to perform specific actions even for PHY + * timestamping to work properly (a switch port must trap the timestamped + * frames and not forward them), it must set IFF_SEE_ALL_HWTSTAMP_REQUESTS in + * dev->priv_flags. + */ +static int dev_set_hwtstamp_phylib(struct net_device *dev, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack) +{ + const struct net_device_ops *ops = dev->netdev_ops; + bool phy_ts = phy_has_hwtstamp(dev->phydev); + struct kernel_hwtstamp_config old_cfg = {}; + bool changed = false; + int err; + + cfg->source = phy_ts ? HWTSTAMP_SOURCE_PHYLIB : HWTSTAMP_SOURCE_NETDEV; + + if (phy_ts && (dev->priv_flags & IFF_SEE_ALL_HWTSTAMP_REQUESTS)) { + err = ops->ndo_hwtstamp_get(dev, &old_cfg); + if (err) + return err; + } + + if (!phy_ts || (dev->priv_flags & IFF_SEE_ALL_HWTSTAMP_REQUESTS)) { + err = ops->ndo_hwtstamp_set(dev, cfg, extack); + if (err) { + if (extack->_msg) + netdev_err(dev, "%s\n", extack->_msg); + return err; + } + } + + if (phy_ts && (dev->priv_flags & IFF_SEE_ALL_HWTSTAMP_REQUESTS)) + changed = kernel_hwtstamp_config_changed(&old_cfg, cfg); + + if (phy_ts) { + err = phy_hwtstamp_set(dev->phydev, cfg, extack); + if (err) { + if (changed) + ops->ndo_hwtstamp_set(dev, &old_cfg, NULL); + return err; + } + } + + return 0; +} + +static int dev_set_hwtstamp(struct net_device *dev, struct ifreq *ifr) +{ + const struct net_device_ops *ops = dev->netdev_ops; + struct kernel_hwtstamp_config kernel_cfg = {}; + struct netlink_ext_ack extack = {}; + struct hwtstamp_config cfg; + int err; + + if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) + return -EFAULT; + + hwtstamp_config_to_kernel(&kernel_cfg, &cfg); + kernel_cfg.ifr = ifr; + + err = net_hwtstamp_validate(&kernel_cfg); + if (err) + return err; + + err = dsa_master_hwtstamp_validate(dev, &kernel_cfg, &extack); + if (err) { + if (extack._msg) + netdev_err(dev, "%s\n", extack._msg); + return err; + } + + if (!ops->ndo_hwtstamp_set) + return dev_eth_ioctl(dev, ifr, SIOCSHWTSTAMP); /* legacy */ + + if (!netif_device_present(dev)) + return -ENODEV; + + err = dev_set_hwtstamp_phylib(dev, &kernel_cfg, &extack); + if (err) + return err; + + /* The driver may have modified the configuration, so copy the + * updated version of it back to user space + */ + if (!kernel_cfg.copied_to_user) { + hwtstamp_config_from_kernel(&cfg, &kernel_cfg); + + if (copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg))) + return -EFAULT; + } + + return 0; +} + +static int generic_hwtstamp_ioctl_lower(struct net_device *dev, int cmd, + struct kernel_hwtstamp_config *kernel_cfg) +{ + struct ifreq ifrr; + int err; + + strscpy_pad(ifrr.ifr_name, dev->name, IFNAMSIZ); + ifrr.ifr_ifru = kernel_cfg->ifr->ifr_ifru; + + err = dev_eth_ioctl(dev, &ifrr, cmd); + if (err) + return err; + + kernel_cfg->ifr->ifr_ifru = ifrr.ifr_ifru; + kernel_cfg->copied_to_user = true; + + return 0; +} + +int generic_hwtstamp_get_lower(struct net_device *dev, + struct kernel_hwtstamp_config *kernel_cfg) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if (!netif_device_present(dev)) + return -ENODEV; + + if (ops->ndo_hwtstamp_get) + return dev_get_hwtstamp_phylib(dev, kernel_cfg); + + /* Legacy path: unconverted lower driver */ + return generic_hwtstamp_ioctl_lower(dev, SIOCGHWTSTAMP, kernel_cfg); +} +EXPORT_SYMBOL(generic_hwtstamp_get_lower); + +int generic_hwtstamp_set_lower(struct net_device *dev, + struct kernel_hwtstamp_config *kernel_cfg, + struct netlink_ext_ack *extack) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if (!netif_device_present(dev)) + return -ENODEV; + + if (ops->ndo_hwtstamp_set) + return dev_set_hwtstamp_phylib(dev, kernel_cfg, extack); + + /* Legacy path: unconverted lower driver */ + return generic_hwtstamp_ioctl_lower(dev, SIOCSHWTSTAMP, kernel_cfg); +} +EXPORT_SYMBOL(generic_hwtstamp_set_lower); + +static int dev_siocbond(struct net_device *dev, + struct ifreq *ifr, unsigned int cmd) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if (ops->ndo_siocbond) { + if (netif_device_present(dev)) + return ops->ndo_siocbond(dev, ifr, cmd); + else + return -ENODEV; + } + + return -EOPNOTSUPP; +} + +static int dev_siocdevprivate(struct net_device *dev, struct ifreq *ifr, + void __user *data, unsigned int cmd) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if (ops->ndo_siocdevprivate) { + if (netif_device_present(dev)) + return ops->ndo_siocdevprivate(dev, ifr, data, cmd); + else + return -ENODEV; + } + + return -EOPNOTSUPP; +} + +static int dev_siocwandev(struct net_device *dev, struct if_settings *ifs) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if (ops->ndo_siocwandev) { + if (netif_device_present(dev)) + return ops->ndo_siocwandev(dev, ifs); + else + return -ENODEV; + } + + return -EOPNOTSUPP; +} + +/* + * Perform the SIOCxIFxxx calls, inside rtnl_lock() + */ +static int dev_ifsioc(struct net *net, struct ifreq *ifr, void __user *data, + unsigned int cmd) +{ + int err; + struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); + const struct net_device_ops *ops; + netdevice_tracker dev_tracker; + + if (!dev) + return -ENODEV; + + ops = dev->netdev_ops; + + switch (cmd) { + case SIOCSIFFLAGS: /* Set interface flags */ + return dev_change_flags(dev, ifr->ifr_flags, NULL); + + case SIOCSIFMETRIC: /* Set the metric on the interface + (currently unused) */ + return -EOPNOTSUPP; + + case SIOCSIFMTU: /* Set the MTU of a device */ + return dev_set_mtu(dev, ifr->ifr_mtu); + + case SIOCSIFHWADDR: + if (dev->addr_len > sizeof(struct sockaddr)) + return -EINVAL; + return dev_set_mac_address_user(dev, &ifr->ifr_hwaddr, NULL); + + case SIOCSIFHWBROADCAST: + if (ifr->ifr_hwaddr.sa_family != dev->type) + return -EINVAL; + memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data, + min(sizeof(ifr->ifr_hwaddr.sa_data_min), + (size_t)dev->addr_len)); + call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); + return 0; + + case SIOCSIFMAP: + return dev_setifmap(dev, ifr); + + case SIOCADDMULTI: + if (!ops->ndo_set_rx_mode || + ifr->ifr_hwaddr.sa_family != AF_UNSPEC) + return -EINVAL; + if (!netif_device_present(dev)) + return -ENODEV; + return dev_mc_add_global(dev, ifr->ifr_hwaddr.sa_data); + + case SIOCDELMULTI: + if (!ops->ndo_set_rx_mode || + ifr->ifr_hwaddr.sa_family != AF_UNSPEC) + return -EINVAL; + if (!netif_device_present(dev)) + return -ENODEV; + return dev_mc_del_global(dev, ifr->ifr_hwaddr.sa_data); + + case SIOCSIFTXQLEN: + if (ifr->ifr_qlen < 0) + return -EINVAL; + return dev_change_tx_queue_len(dev, ifr->ifr_qlen); + + case SIOCSIFNAME: + ifr->ifr_newname[IFNAMSIZ-1] = '\0'; + return dev_change_name(dev, ifr->ifr_newname); + + case SIOCWANDEV: + return dev_siocwandev(dev, &ifr->ifr_settings); + + case SIOCBRADDIF: + case SIOCBRDELIF: + if (!netif_device_present(dev)) + return -ENODEV; + if (!netif_is_bridge_master(dev)) + return -EOPNOTSUPP; + netdev_hold(dev, &dev_tracker, GFP_KERNEL); + rtnl_unlock(); + err = br_ioctl_call(net, netdev_priv(dev), cmd, ifr, NULL); + netdev_put(dev, &dev_tracker); + rtnl_lock(); + return err; + + case SIOCDEVPRIVATE ... SIOCDEVPRIVATE + 15: + return dev_siocdevprivate(dev, ifr, data, cmd); + + case SIOCSHWTSTAMP: + return dev_set_hwtstamp(dev, ifr); + + case SIOCGHWTSTAMP: + return dev_get_hwtstamp(dev, ifr); + + case SIOCGMIIPHY: + case SIOCGMIIREG: + case SIOCSMIIREG: + return dev_eth_ioctl(dev, ifr, cmd); + + case SIOCBONDENSLAVE: + case SIOCBONDRELEASE: + case SIOCBONDSETHWADDR: + case SIOCBONDSLAVEINFOQUERY: + case SIOCBONDINFOQUERY: + case SIOCBONDCHANGEACTIVE: + return dev_siocbond(dev, ifr, cmd); + + /* Unknown ioctl */ + default: + err = -EINVAL; + } + return err; +} + +/** + * dev_load - load a network module + * @net: the applicable net namespace + * @name: name of interface + * + * If a network interface is not present and the process has suitable + * privileges this function loads the module. If module loading is not + * available in this kernel then it becomes a nop. + */ + +void dev_load(struct net *net, const char *name) +{ + struct net_device *dev; + int no_module; + + rcu_read_lock(); + dev = dev_get_by_name_rcu(net, name); + rcu_read_unlock(); + + no_module = !dev; + if (no_module && capable(CAP_NET_ADMIN)) + no_module = request_module("netdev-%s", name); + if (no_module && capable(CAP_SYS_MODULE)) + request_module("%s", name); +} +EXPORT_SYMBOL(dev_load); + +/* + * This function handles all "interface"-type I/O control requests. The actual + * 'doing' part of this is dev_ifsioc above. + */ + +/** + * dev_ioctl - network device ioctl + * @net: the applicable net namespace + * @cmd: command to issue + * @ifr: pointer to a struct ifreq in user space + * @data: data exchanged with userspace + * @need_copyout: whether or not copy_to_user() should be called + * + * Issue ioctl functions to devices. This is normally called by the + * user space syscall interfaces but can sometimes be useful for + * other purposes. The return value is the return from the syscall if + * positive or a negative errno code on error. + */ + +int dev_ioctl(struct net *net, unsigned int cmd, struct ifreq *ifr, + void __user *data, bool *need_copyout) +{ + int ret; + char *colon; + + if (need_copyout) + *need_copyout = true; + if (cmd == SIOCGIFNAME) + return dev_ifname(net, ifr); + + ifr->ifr_name[IFNAMSIZ-1] = 0; + + colon = strchr(ifr->ifr_name, ':'); + if (colon) + *colon = 0; + + /* + * See which interface the caller is talking about. + */ + + switch (cmd) { + case SIOCGIFHWADDR: + dev_load(net, ifr->ifr_name); + ret = dev_get_mac_address(&ifr->ifr_hwaddr, net, ifr->ifr_name); + if (colon) + *colon = ':'; + return ret; + /* + * These ioctl calls: + * - can be done by all. + * - atomic and do not require locking. + * - return a value + */ + case SIOCGIFFLAGS: + case SIOCGIFMETRIC: + case SIOCGIFMTU: + case SIOCGIFSLAVE: + case SIOCGIFMAP: + case SIOCGIFINDEX: + case SIOCGIFTXQLEN: + dev_load(net, ifr->ifr_name); + rcu_read_lock(); + ret = dev_ifsioc_locked(net, ifr, cmd); + rcu_read_unlock(); + if (colon) + *colon = ':'; + return ret; + + case SIOCETHTOOL: + dev_load(net, ifr->ifr_name); + ret = dev_ethtool(net, ifr, data); + if (colon) + *colon = ':'; + return ret; + + /* + * These ioctl calls: + * - require superuser power. + * - require strict serialization. + * - return a value + */ + case SIOCGMIIPHY: + case SIOCGMIIREG: + case SIOCSIFNAME: + dev_load(net, ifr->ifr_name); + if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) + return -EPERM; + rtnl_lock(); + ret = dev_ifsioc(net, ifr, data, cmd); + rtnl_unlock(); + if (colon) + *colon = ':'; + return ret; + + /* + * These ioctl calls: + * - require superuser power. + * - require strict serialization. + * - do not return a value + */ + case SIOCSIFMAP: + case SIOCSIFTXQLEN: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + fallthrough; + /* + * These ioctl calls: + * - require local superuser power. + * - require strict serialization. + * - do not return a value + */ + case SIOCSIFFLAGS: + case SIOCSIFMETRIC: + case SIOCSIFMTU: + case SIOCSIFHWADDR: + case SIOCSIFSLAVE: + case SIOCADDMULTI: + case SIOCDELMULTI: + case SIOCSIFHWBROADCAST: + case SIOCSMIIREG: + case SIOCBONDENSLAVE: + case SIOCBONDRELEASE: + case SIOCBONDSETHWADDR: + case SIOCBONDCHANGEACTIVE: + case SIOCBRADDIF: + case SIOCBRDELIF: + case SIOCSHWTSTAMP: + if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) + return -EPERM; + fallthrough; + case SIOCBONDSLAVEINFOQUERY: + case SIOCBONDINFOQUERY: + dev_load(net, ifr->ifr_name); + rtnl_lock(); + ret = dev_ifsioc(net, ifr, data, cmd); + rtnl_unlock(); + if (need_copyout) + *need_copyout = false; + return ret; + + case SIOCGIFMEM: + /* Get the per device memory space. We can add this but + * currently do not support it */ + case SIOCSIFMEM: + /* Set the per device memory buffer space. + * Not applicable in our case */ + case SIOCSIFLINK: + return -ENOTTY; + + /* + * Unknown or private ioctl. + */ + default: + if (cmd == SIOCWANDEV || + cmd == SIOCGHWTSTAMP || + (cmd >= SIOCDEVPRIVATE && + cmd <= SIOCDEVPRIVATE + 15)) { + dev_load(net, ifr->ifr_name); + rtnl_lock(); + ret = dev_ifsioc(net, ifr, data, cmd); + rtnl_unlock(); + return ret; + } + return -ENOTTY; + } +} |