Return-path: Received: from crystal.sipsolutions.net ([195.210.38.204]:40429 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753840AbXJYNWv (ORCPT ); Thu, 25 Oct 2007 09:22:51 -0400 Received: from [131.234.198.68] by sipsolutions.net with esmtpsa (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.67) (envelope-from ) id 1Il2ff-0000dz-No for linux-wireless@vger.kernel.org; Thu, 25 Oct 2007 14:22:48 +0100 Message-Id: <20071025093716.685606000@sipsolutions.net> (sfid-20071025_142259_000258_E3C7FFAE) References: <20071025093618.440937000@sipsolutions.net> Date: Thu, 25 Oct 2007 11:36:24 +0200 From: Johannes Berg To: linux-wireless@vger.kernel.org Subject: [patch 6/9] nl80211/cfg80211: station handling Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: This patch adds station handling to cfg80211/nl80211. Signed-off-by: Johannes Berg --- include/linux/nl80211.h | 68 +++++++++++++ include/net/cfg80211.h | 54 ++++++++++ net/wireless/nl80211.c | 236 ++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 358 insertions(+) --- linux-2.6.orig/include/linux/nl80211.h 2007-10-24 16:50:00.170256240 +0200 +++ linux-2.6/include/linux/nl80211.h 2007-10-24 16:57:06.090256076 +0200 @@ -7,6 +7,18 @@ */ /** + * DOC: Station handling + * + * Stations are added per interface, but a special case exists with VLAN + * interfaces. When a station is bound to an AP interface, it may be moved + * into a VLAN identified by a VLAN interface index (%NL80211_ATTR_STA_VLAN). + * The station is still assumed to belong to the AP interface it was added + * to. + * + * TODO: need more info? + */ + +/** * enum nl80211_commands - supported nl80211 commands * * @NL80211_CMD_UNSPEC: unspecified command to catch errors @@ -51,6 +63,16 @@ * the %NL80211_ATTR_BEACON_INTERVAL, %NL80211_ATTR_DTIM_PERIOD, * %NL80211_BEACON_HEAD and %NL80211_BEACON_TAIL attributes. * + * @NL80211_CMD_GET_STATION: Get station attributes for station identified by + * %NL80211_ATTR_MAC on the interface identified by %NL80211_ATTR_IFINDEX. + * @NL80211_CMD_SET_STATION: Set station attributes for station identified by + * %NL80211_ATTR_MAC on the interface identified by %NL80211_ATTR_IFINDEX. + * @NL80211_CMD_NEW_STATION: Add a station with given attributes to the + * the interface identified by %NL80211_ATTR_IFINDEX. + * @NL80211_CMD_DEL_STATION: Remove a station identified by %NL80211_ATTR_MAC + * or, if no MAC address given, all stations, on the interface identified + * by %NL80211_ATTR_IFINDEX. + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -78,6 +100,11 @@ enum nl80211_commands { NL80211_CMD_NEW_BEACON, /* ? */ NL80211_CMD_DEL_BEACON, /* ? */ + NL80211_CMD_GET_STATION, + NL80211_CMD_SET_STATION, + NL80211_CMD_NEW_STATION, + NL80211_CMD_DEL_STATION, + /* add commands here */ /* used to define NL80211_CMD_MAX below */ @@ -115,6 +142,17 @@ enum nl80211_commands { * @NL80211_ATTR_BEACON_HEAD: portion of the beacon before the TIM IE * @NL80211_ATTR_BEACON_TAIL: portion of the beacon after the TIM IE * + * @NL80211_ATTR_STA_AID: Association ID for the station (u16) + * @NL80211_ATTR_STA_FLAGS: flags, nested element with NLA_FLAG attributes of + * &enum nl80211_sta_flags. + * @NL80211_ATTR_STA_LISTEN_INTERVAL: listen interval as defined by + * IEEE 802.11 7.3.1.6 (u16). + * @NL80211_ATTR_STA_SUPPORTED_RATES: supported rates, array of supported + * rates as defined by IEEE 802.11 7.3.2.2 but without the length + * restriction (at most %NL80211_MAX_SUPP_RATES). + * @NL80211_ATTR_STA_VLAN: interface index of VLAN interface to move station + * to, or the AP interface the station was originally added to to. + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -142,12 +180,20 @@ enum nl80211_attrs { NL80211_ATTR_BEACON_HEAD, NL80211_ATTR_BEACON_TAIL, + NL80211_ATTR_STA_AID, + NL80211_ATTR_STA_FLAGS, + NL80211_ATTR_STA_LISTEN_INTERVAL, + NL80211_ATTR_STA_SUPPORTED_RATES, + NL80211_ATTR_STA_VLAN, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, NL80211_ATTR_MAX = __NL80211_ATTR_AFTER_LAST - 1 }; +#define NL80211_MAX_SUPP_RATES 32 + /** * enum nl80211_iftype - (virtual) interface types * @@ -179,4 +225,26 @@ enum nl80211_iftype { NL80211_IFTYPE_MAX = __NL80211_IFTYPE_AFTER_LAST - 1 }; +/** + * enum nl80211_sta_flags - station flags + * + * Station flags. When a station is added to an AP interface, it is + * assumed to be already associated (and hence authenticated.) + * + * @NL80211_STA_FLAG_AUTHORIZED: station is authorized (802.1X) + * @NL80211_STA_FLAG_SHORT_PREAMBLE: station is capable of receiving frames + * with short barker preamble + * @NL80211_STA_FLAG_WME: station is WME/QoS capable + */ +enum nl80211_sta_flags { + __NL80211_STA_FLAG_INVALID, + NL80211_STA_FLAG_AUTHORIZED, + NL80211_STA_FLAG_SHORT_PREAMBLE, + NL80211_STA_FLAG_WME, + + /* keep last */ + __NL80211_STA_FLAG_AFTER_LAST, + NL80211_STA_FLAG_MAX = __NL80211_STA_FLAG_AFTER_LAST - 1 +}; + #endif /* __LINUX_NL80211_H */ --- linux-2.6.orig/include/net/cfg80211.h 2007-10-24 16:50:00.200259495 +0200 +++ linux-2.6/include/net/cfg80211.h 2007-10-24 16:56:35.020252386 +0200 @@ -89,6 +89,47 @@ struct beacon_parameters { int head_len, tail_len; }; +/** + * enum station_flags - station flags + * + * Station capability flags. Note that these must be the bits + * according to the nl80211 flags. + * + * @STATION_FLAG_CHANGED: station flags were changed + * @STATION_FLAG_AUTHORIZED: station is authorized to send frames (802.1X) + * @STATION_FLAG_SHORT_PREAMBLE: station is capable of receiving frames + * with short preambles + * @STATION_FLAG_WME: station is WME/QoS capable + */ +enum station_flags { + STATION_FLAG_CHANGED = 1<<0, + STATION_FLAG_AUTHORIZED = 1<ieee80211_ptr) + return -EINVAL; + 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, @@ -774,6 +985,31 @@ 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 */ --