diff options
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 306ae019ea81..431835126e88 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -76,6 +76,12 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { .len = IEEE80211_MAX_DATA_LEN }, [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, .len = IEEE80211_MAX_DATA_LEN }, + [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, + [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, + [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, + [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, + .len = NL80211_MAX_SUPP_RATES }, + [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, }; /* message building helper */ @@ -715,6 +721,210 @@ static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) return err; } +static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { + [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, + [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, + [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, +}; + +static int parse_station_flags(struct nlattr *nla, u32 *staflags) +{ + struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; + int flag; + + *staflags = 0; + + if (!nla) + return 0; + + if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, + nla, sta_flags_policy)) + return -EINVAL; + + *staflags = STATION_FLAG_CHANGED; + + for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) + if (flags[flag]) + *staflags |= (1<<flag); + + return 0; +} + +static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) +{ + return -EOPNOTSUPP; +} + +/* + * Get vlan interface making sure it is on the right wiphy. + */ +static int get_vlan(struct nlattr *vlanattr, + struct cfg80211_registered_device *rdev, + struct net_device **vlan) +{ + *vlan = NULL; + + if (vlanattr) { + *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr)); + if (!*vlan) + return -ENODEV; + if (!(*vlan)->ieee80211_ptr) + return -EINVAL; + if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy) + return -EINVAL; + } + return 0; +} + +static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *drv; + int err; + struct net_device *dev; + struct station_parameters params; + u8 *mac_addr = NULL; + + memset(¶ms, 0, sizeof(params)); + + params.listen_interval = -1; + + if (info->attrs[NL80211_ATTR_STA_AID]) + return -EINVAL; + + if (!info->attrs[NL80211_ATTR_MAC]) + return -EINVAL; + + mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); + + if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { + params.supported_rates = + nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); + params.supported_rates_len = + nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); + } + + if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) + params.listen_interval = + nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); + + if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], + ¶ms.station_flags)) + return -EINVAL; + + err = get_drv_dev_by_info_ifindex(info, &drv, &dev); + if (err) + return err; + + err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); + if (err) + goto out; + + if (!drv->ops->change_station) { + err = -EOPNOTSUPP; + goto out; + } + + rtnl_lock(); + err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms); + rtnl_unlock(); + + out: + if (params.vlan) + dev_put(params.vlan); + cfg80211_put_dev(drv); + dev_put(dev); + return err; +} + +static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *drv; + int err; + struct net_device *dev; + struct station_parameters params; + u8 *mac_addr = NULL; + + memset(¶ms, 0, sizeof(params)); + + if (!info->attrs[NL80211_ATTR_MAC]) + return -EINVAL; + + if (!info->attrs[NL80211_ATTR_STA_AID]) + return -EINVAL; + + if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) + return -EINVAL; + + if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) + return -EINVAL; + + mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); + params.supported_rates = + nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); + params.supported_rates_len = + nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); + params.listen_interval = + nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); + params.listen_interval = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); + + if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], + ¶ms.station_flags)) + return -EINVAL; + + err = get_drv_dev_by_info_ifindex(info, &drv, &dev); + if (err) + return err; + + err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); + if (err) + goto out; + + if (!drv->ops->add_station) { + err = -EOPNOTSUPP; + goto out; + } + + rtnl_lock(); + err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms); + rtnl_unlock(); + + out: + if (params.vlan) + dev_put(params.vlan); + cfg80211_put_dev(drv); + dev_put(dev); + return err; +} + +static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *drv; + int err; + struct net_device *dev; + u8 *mac_addr = NULL; + + if (info->attrs[NL80211_ATTR_MAC]) + mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); + + err = get_drv_dev_by_info_ifindex(info, &drv, &dev); + if (err) + return err; + + if (!drv->ops->del_station) { + err = -EOPNOTSUPP; + goto out; + } + + rtnl_lock(); + err = drv->ops->del_station(&drv->wiphy, dev, mac_addr); + rtnl_unlock(); + + out: + cfg80211_put_dev(drv); + dev_put(dev); + return err; +} + static struct genl_ops nl80211_ops[] = { { .cmd = NL80211_CMD_GET_WIPHY, @@ -796,6 +1006,31 @@ static struct genl_ops nl80211_ops[] = { .flags = GENL_ADMIN_PERM, .doit = nl80211_del_beacon, }, + { + .cmd = NL80211_CMD_GET_STATION, + .doit = nl80211_get_station, + /* TODO: implement dumpit */ + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, + { + .cmd = NL80211_CMD_SET_STATION, + .doit = nl80211_set_station, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, + { + .cmd = NL80211_CMD_NEW_STATION, + .doit = nl80211_new_station, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, + { + .cmd = NL80211_CMD_DEL_STATION, + .doit = nl80211_del_station, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, }; /* multicast groups */ |