diff options
Diffstat (limited to 'package/mac80211/src/wireless/nl80211.c')
| -rw-r--r-- | package/mac80211/src/wireless/nl80211.c | 431 |
1 files changed, 0 insertions, 431 deletions
diff --git a/package/mac80211/src/wireless/nl80211.c b/package/mac80211/src/wireless/nl80211.c deleted file mode 100644 index 58717f303..000000000 --- a/package/mac80211/src/wireless/nl80211.c +++ /dev/null @@ -1,431 +0,0 @@ -/* - * This is the new netlink-based wireless configuration interface. - * - * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net> - */ - -#include <linux/if.h> -#include <linux/module.h> -#include <linux/err.h> -#include <linux/mutex.h> -#include <linux/list.h> -#include <linux/if_ether.h> -#include <linux/ieee80211.h> -#include <linux/nl80211.h> -#include <linux/rtnetlink.h> -#include <linux/netlink.h> -#include <net/genetlink.h> -#include <net/cfg80211.h> -#include "core.h" -#include "nl80211.h" - -/* the netlink family */ -static struct genl_family nl80211_fam = { - .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ - .name = "nl80211", /* have users key off the name instead */ - .hdrsize = 0, /* no private header */ - .version = 1, /* no particular meaning now */ - .maxattr = NL80211_ATTR_MAX, -}; - -/* internal helper: get drv and dev */ -static int get_drv_dev_by_info_ifindex(struct genl_info *info, - struct cfg80211_registered_device **drv, - struct net_device **dev) -{ - int ifindex; - - if (!info->attrs[NL80211_ATTR_IFINDEX]) - return -EINVAL; - - ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); - *dev = dev_get_by_index(ifindex); - if (!*dev) - return -ENODEV; - - *drv = cfg80211_get_dev_from_ifindex(ifindex); - if (IS_ERR(*drv)) { - dev_put(*dev); - return PTR_ERR(*drv); - } - - return 0; -} - -/* policy for the attributes */ -static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { - [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, - [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, - .len = BUS_ID_SIZE-1 }, - - [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, - [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, - [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, -}; - -/* message building helper */ -static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq, - int flags, u8 cmd) -{ - /* since there is no private header just add the generic one */ - return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd); -} - -/* netlink command implementations */ - -static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, - struct cfg80211_registered_device *dev) -{ - void *hdr; - - hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); - if (!hdr) - return -1; - - NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx); - NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); - return genlmsg_end(msg, hdr); - - nla_put_failure: - return genlmsg_cancel(msg, hdr); -} - -static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) -{ - int idx = 0; - int start = cb->args[0]; - struct cfg80211_registered_device *dev; - - mutex_lock(&cfg80211_drv_mutex); - list_for_each_entry(dev, &cfg80211_drv_list, list) { - if (++idx < start) - continue; - if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, - cb->nlh->nlmsg_seq, NLM_F_MULTI, - dev) < 0) - break; - } - mutex_unlock(&cfg80211_drv_mutex); - - cb->args[0] = idx; - - return skb->len; -} - -static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) -{ - struct sk_buff *msg; - struct cfg80211_registered_device *dev; - - dev = cfg80211_get_dev_from_info(info); - if (IS_ERR(dev)) - return PTR_ERR(dev); - - msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); - if (!msg) - goto out_err; - - if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) - goto out_free; - - cfg80211_put_dev(dev); - - return genlmsg_unicast(msg, info->snd_pid); - - out_free: - nlmsg_free(msg); - out_err: - cfg80211_put_dev(dev); - return -ENOBUFS; -} - -static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) -{ - struct cfg80211_registered_device *rdev; - int result; - - if (!info->attrs[NL80211_ATTR_WIPHY_NAME]) - return -EINVAL; - - rdev = cfg80211_get_dev_from_info(info); - if (IS_ERR(rdev)) - return PTR_ERR(rdev); - - result = cfg80211_dev_rename(rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); - - cfg80211_put_dev(rdev); - return result; -} - - -static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags, - struct net_device *dev) -{ - void *hdr; - - hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE); - if (!hdr) - return -1; - - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); - NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name); - /* TODO: interface type */ - return genlmsg_end(msg, hdr); - - nla_put_failure: - return genlmsg_cancel(msg, hdr); -} - -static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) -{ - int wp_idx = 0; - int if_idx = 0; - int wp_start = cb->args[0]; - int if_start = cb->args[1]; - struct cfg80211_registered_device *dev; - struct wireless_dev *wdev; - - mutex_lock(&cfg80211_drv_mutex); - list_for_each_entry(dev, &cfg80211_drv_list, list) { - if (++wp_idx < wp_start) - continue; - if_idx = 0; - - mutex_lock(&dev->devlist_mtx); - list_for_each_entry(wdev, &dev->netdev_list, list) { - if (++if_idx < if_start) - continue; - if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid, - cb->nlh->nlmsg_seq, NLM_F_MULTI, - wdev->netdev) < 0) - break; - } - mutex_unlock(&dev->devlist_mtx); - } - mutex_unlock(&cfg80211_drv_mutex); - - cb->args[0] = wp_idx; - cb->args[1] = if_idx; - - return skb->len; -} - -static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) -{ - struct sk_buff *msg; - struct cfg80211_registered_device *dev; - struct net_device *netdev; - int err; - - err = get_drv_dev_by_info_ifindex(info, &dev, &netdev); - if (err) - return err; - - msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); - if (!msg) - goto out_err; - - if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, netdev) < 0) - goto out_free; - - dev_put(netdev); - cfg80211_put_dev(dev); - - return genlmsg_unicast(msg, info->snd_pid); - - out_free: - nlmsg_free(msg); - out_err: - dev_put(netdev); - cfg80211_put_dev(dev); - return -ENOBUFS; -} - -static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) -{ - struct cfg80211_registered_device *drv; - int err, ifindex; - enum nl80211_iftype type; - struct net_device *dev; - - if (info->attrs[NL80211_ATTR_IFTYPE]) { - type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); - if (type > NL80211_IFTYPE_MAX) - return -EINVAL; - } else - return -EINVAL; - - err = get_drv_dev_by_info_ifindex(info, &drv, &dev); - if (err) - return err; - ifindex = dev->ifindex; - dev_put(dev); - - if (!drv->ops->change_virtual_intf) { - err = -EOPNOTSUPP; - goto unlock; - } - - rtnl_lock(); - err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex, type); - rtnl_unlock(); - - unlock: - cfg80211_put_dev(drv); - return err; -} - -static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) -{ - struct cfg80211_registered_device *drv; - int err; - enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; - - if (!info->attrs[NL80211_ATTR_IFNAME]) - return -EINVAL; - - if (info->attrs[NL80211_ATTR_IFTYPE]) { - type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); - if (type > NL80211_IFTYPE_MAX) - return -EINVAL; - } - - drv = cfg80211_get_dev_from_info(info); - if (IS_ERR(drv)) - return PTR_ERR(drv); - - if (!drv->ops->add_virtual_intf) { - err = -EOPNOTSUPP; - goto unlock; - } - - rtnl_lock(); - err = drv->ops->add_virtual_intf(&drv->wiphy, - nla_data(info->attrs[NL80211_ATTR_IFNAME]), type); - rtnl_unlock(); - - unlock: - cfg80211_put_dev(drv); - return err; -} - -static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) -{ - struct cfg80211_registered_device *drv; - int ifindex, err; - struct net_device *dev; - - err = get_drv_dev_by_info_ifindex(info, &drv, &dev); - if (err) - return err; - ifindex = dev->ifindex; - dev_put(dev); - - if (!drv->ops->del_virtual_intf) { - err = -EOPNOTSUPP; - goto out; - } - - rtnl_lock(); - err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex); - rtnl_unlock(); - - out: - cfg80211_put_dev(drv); - return err; -} - -static struct genl_ops nl80211_ops[] = { - { - .cmd = NL80211_CMD_GET_WIPHY, - .doit = nl80211_get_wiphy, - .dumpit = nl80211_dump_wiphy, - .policy = nl80211_policy, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = NL80211_CMD_SET_WIPHY, - .doit = nl80211_set_wiphy, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_GET_INTERFACE, - .doit = nl80211_get_interface, - .dumpit = nl80211_dump_interface, - .policy = nl80211_policy, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = NL80211_CMD_SET_INTERFACE, - .doit = nl80211_set_interface, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_NEW_INTERFACE, - .doit = nl80211_new_interface, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_DEL_INTERFACE, - .doit = nl80211_del_interface, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, -}; - -/* multicast groups */ -static struct genl_multicast_group nl80211_config_mcgrp = { - .name = "config", -}; - -/* notification functions */ - -void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) -{ - struct sk_buff *msg; - - msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); - if (!msg) - return; - - if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) { - nlmsg_free(msg); - return; - } - - genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL); -} - -/* initialisation/exit functions */ - -int nl80211_init(void) -{ - int err, i; - - err = genl_register_family(&nl80211_fam); - if (err) - return err; - - for (i = 0; i < ARRAY_SIZE(nl80211_ops); i++) { - err = genl_register_ops(&nl80211_fam, &nl80211_ops[i]); - if (err) - goto err_out; - } - - err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); - if (err) - goto err_out; - - return 0; - err_out: - genl_unregister_family(&nl80211_fam); - return err; -} - -void nl80211_exit(void) -{ - genl_unregister_family(&nl80211_fam); -} |