1 files changed, 550 insertions, 2 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 9e2bc1fd0237..22c9619ba776 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1,17 +1,20 @@
 /*
  * mac80211 configuration hooks for cfg80211
  *
- * Copyright 2006	Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2006, 2007	Johannes Berg <johannes@sipsolutions.net>
  *
  * This file is GPLv2 as found in COPYING.
  */
 
+#include <linux/ieee80211.h>
 #include <linux/nl80211.h>
 #include <linux/rtnetlink.h>
 #include <net/net_namespace.h>
+#include <linux/rcupdate.h>
 #include <net/cfg80211.h>
 #include "ieee80211_i.h"
 #include "cfg.h"
+#include "ieee80211_rate.h"
 
 static enum ieee80211_if_types
 nl80211_type_to_mac80211_type(enum nl80211_iftype type)
@@ -90,7 +93,7 @@ static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
 
 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
-        if (sdata->type == IEEE80211_IF_TYPE_VLAN)
+	if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
 		return -EOPNOTSUPP;
 
 	ieee80211_if_reinit(dev);
@@ -99,8 +102,553 @@ static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
 	return 0;
 }
 
+static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
+			     u8 key_idx, u8 *mac_addr,
+			     struct key_params *params)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct sta_info *sta = NULL;
+	enum ieee80211_key_alg alg;
+	int ret;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	switch (params->cipher) {
+	case WLAN_CIPHER_SUITE_WEP40:
+	case WLAN_CIPHER_SUITE_WEP104:
+		alg = ALG_WEP;
+		break;
+	case WLAN_CIPHER_SUITE_TKIP:
+		alg = ALG_TKIP;
+		break;
+	case WLAN_CIPHER_SUITE_CCMP:
+		alg = ALG_CCMP;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (mac_addr) {
+		sta = sta_info_get(sdata->local, mac_addr);
+		if (!sta)
+			return -ENOENT;
+	}
+
+	ret = 0;
+	if (!ieee80211_key_alloc(sdata, sta, alg, key_idx,
+				 params->key_len, params->key))
+		ret = -ENOMEM;
+
+	if (sta)
+		sta_info_put(sta);
+
+	return ret;
+}
+
+static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
+			     u8 key_idx, u8 *mac_addr)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct sta_info *sta;
+	int ret;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	if (mac_addr) {
+		sta = sta_info_get(sdata->local, mac_addr);
+		if (!sta)
+			return -ENOENT;
+
+		ret = 0;
+		if (sta->key)
+			ieee80211_key_free(sta->key);
+		else
+			ret = -ENOENT;
+
+		sta_info_put(sta);
+		return ret;
+	}
+
+	if (!sdata->keys[key_idx])
+		return -ENOENT;
+
+	ieee80211_key_free(sdata->keys[key_idx]);
+
+	return 0;
+}
+
+static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
+			     u8 key_idx, u8 *mac_addr, void *cookie,
+			     void (*callback)(void *cookie,
+					      struct key_params *params))
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct sta_info *sta = NULL;
+	u8 seq[6] = {0};
+	struct key_params params;
+	struct ieee80211_key *key;
+	u32 iv32;
+	u16 iv16;
+	int err = -ENOENT;
+
+	if (mac_addr) {
+		sta = sta_info_get(sdata->local, mac_addr);
+		if (!sta)
+			goto out;
+
+		key = sta->key;
+	} else
+		key = sdata->keys[key_idx];
+
+	if (!key)
+		goto out;
+
+	memset(&params, 0, sizeof(params));
+
+	switch (key->conf.alg) {
+	case ALG_TKIP:
+		params.cipher = WLAN_CIPHER_SUITE_TKIP;
+
+		iv32 = key->u.tkip.iv32;
+		iv16 = key->u.tkip.iv16;
+
+		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
+		    sdata->local->ops->get_tkip_seq)
+			sdata->local->ops->get_tkip_seq(
+				local_to_hw(sdata->local),
+				key->conf.hw_key_idx,
+				&iv32, &iv16);
+
+		seq[0] = iv16 & 0xff;
+		seq[1] = (iv16 >> 8) & 0xff;
+		seq[2] = iv32 & 0xff;
+		seq[3] = (iv32 >> 8) & 0xff;
+		seq[4] = (iv32 >> 16) & 0xff;
+		seq[5] = (iv32 >> 24) & 0xff;
+		params.seq = seq;
+		params.seq_len = 6;
+		break;
+	case ALG_CCMP:
+		params.cipher = WLAN_CIPHER_SUITE_CCMP;
+		seq[0] = key->u.ccmp.tx_pn[5];
+		seq[1] = key->u.ccmp.tx_pn[4];
+		seq[2] = key->u.ccmp.tx_pn[3];
+		seq[3] = key->u.ccmp.tx_pn[2];
+		seq[4] = key->u.ccmp.tx_pn[1];
+		seq[5] = key->u.ccmp.tx_pn[0];
+		params.seq = seq;
+		params.seq_len = 6;
+		break;
+	case ALG_WEP:
+		if (key->conf.keylen == 5)
+			params.cipher = WLAN_CIPHER_SUITE_WEP40;
+		else
+			params.cipher = WLAN_CIPHER_SUITE_WEP104;
+		break;
+	}
+
+	params.key = key->conf.key;
+	params.key_len = key->conf.keylen;
+
+	callback(cookie, &params);
+	err = 0;
+
+ out:
+	if (sta)
+		sta_info_put(sta);
+	return err;
+}
+
+static int ieee80211_config_default_key(struct wiphy *wiphy,
+					struct net_device *dev,
+					u8 key_idx)
+{
+	struct ieee80211_sub_if_data *sdata;
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	ieee80211_set_default_key(sdata, key_idx);
+
+	return 0;
+}
+
+static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
+				 u8 *mac, struct station_stats *stats)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sta_info *sta;
+
+	sta = sta_info_get(local, mac);
+	if (!sta)
+		return -ENOENT;
+
+	/* XXX: verify sta->dev == dev */
+
+	stats->filled = STATION_STAT_INACTIVE_TIME |
+			STATION_STAT_RX_BYTES |
+			STATION_STAT_TX_BYTES;
+
+	stats->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
+	stats->rx_bytes = sta->rx_bytes;
+	stats->tx_bytes = sta->tx_bytes;
+
+	sta_info_put(sta);
+
+	return 0;
+}
+
+/*
+ * This handles both adding a beacon and setting new beacon info
+ */
+static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
+				   struct beacon_parameters *params)
+{
+	struct beacon_data *new, *old;
+	int new_head_len, new_tail_len;
+	int size;
+	int err = -EINVAL;
+
+	old = sdata->u.ap.beacon;
+
+	/* head must not be zero-length */
+	if (params->head && !params->head_len)
+		return -EINVAL;
+
+	/*
+	 * This is a kludge. beacon interval should really be part
+	 * of the beacon information.
+	 */
+	if (params->interval) {
+		sdata->local->hw.conf.beacon_int = params->interval;
+		if (ieee80211_hw_config(sdata->local))
+			return -EINVAL;
+		/*
+		 * We updated some parameter so if below bails out
+		 * it's not an error.
+		 */
+		err = 0;
+	}
+
+	/* Need to have a beacon head if we don't have one yet */
+	if (!params->head && !old)
+		return err;
+
+	/* sorry, no way to start beaconing without dtim period */
+	if (!params->dtim_period && !old)
+		return err;
+
+	/* new or old head? */
+	if (params->head)
+		new_head_len = params->head_len;
+	else
+		new_head_len = old->head_len;
+
+	/* new or old tail? */
+	if (params->tail || !old)
+		/* params->tail_len will be zero for !params->tail */
+		new_tail_len = params->tail_len;
+	else
+		new_tail_len = old->tail_len;
+
+	size = sizeof(*new) + new_head_len + new_tail_len;
+
+	new = kzalloc(size, GFP_KERNEL);
+	if (!new)
+		return -ENOMEM;
+
+	/* start filling the new info now */
+
+	/* new or old dtim period? */
+	if (params->dtim_period)
+		new->dtim_period = params->dtim_period;
+	else
+		new->dtim_period = old->dtim_period;
+
+	/*
+	 * pointers go into the block we allocated,
+	 * memory is | beacon_data | head | tail |
+	 */
+	new->head = ((u8 *) new) + sizeof(*new);
+	new->tail = new->head + new_head_len;
+	new->head_len = new_head_len;
+	new->tail_len = new_tail_len;
+
+	/* copy in head */
+	if (params->head)
+		memcpy(new->head, params->head, new_head_len);
+	else
+		memcpy(new->head, old->head, new_head_len);
+
+	/* copy in optional tail */
+	if (params->tail)
+		memcpy(new->tail, params->tail, new_tail_len);
+	else
+		if (old)
+			memcpy(new->tail, old->tail, new_tail_len);
+
+	rcu_assign_pointer(sdata->u.ap.beacon, new);
+
+	synchronize_rcu();
+
+	kfree(old);
+
+	return ieee80211_if_config_beacon(sdata->dev);
+}
+
+static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
+				struct beacon_parameters *params)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct beacon_data *old;
+
+	if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
+		return -EINVAL;
+
+	old = sdata->u.ap.beacon;
+
+	if (old)
+		return -EALREADY;
+
+	return ieee80211_config_beacon(sdata, params);
+}
+
+static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
+				struct beacon_parameters *params)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct beacon_data *old;
+
+	if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
+		return -EINVAL;
+
+	old = sdata->u.ap.beacon;
+
+	if (!old)
+		return -ENOENT;
+
+	return ieee80211_config_beacon(sdata, params);
+}
+
+static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct beacon_data *old;
+
+	if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
+		return -EINVAL;
+
+	old = sdata->u.ap.beacon;
+
+	if (!old)
+		return -ENOENT;
+
+	rcu_assign_pointer(sdata->u.ap.beacon, NULL);
+	synchronize_rcu();
+	kfree(old);
+
+	return ieee80211_if_config_beacon(dev);
+}
+
+/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
+struct iapp_layer2_update {
+	u8 da[ETH_ALEN];	/* broadcast */
+	u8 sa[ETH_ALEN];	/* STA addr */
+	__be16 len;		/* 6 */
+	u8 dsap;		/* 0 */
+	u8 ssap;		/* 0 */
+	u8 control;
+	u8 xid_info[3];
+} __attribute__ ((packed));
+
+static void ieee80211_send_layer2_update(struct sta_info *sta)
+{
+	struct iapp_layer2_update *msg;
+	struct sk_buff *skb;
+
+	/* Send Level 2 Update Frame to update forwarding tables in layer 2
+	 * bridge devices */
+
+	skb = dev_alloc_skb(sizeof(*msg));
+	if (!skb)
+		return;
+	msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
+
+	/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
+	 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
+
+	memset(msg->da, 0xff, ETH_ALEN);
+	memcpy(msg->sa, sta->addr, ETH_ALEN);
+	msg->len = htons(6);
+	msg->dsap = 0;
+	msg->ssap = 0x01;	/* NULL LSAP, CR Bit: Response */
+	msg->control = 0xaf;	/* XID response lsb.1111F101.
+				 * F=0 (no poll command; unsolicited frame) */
+	msg->xid_info[0] = 0x81;	/* XID format identifier */
+	msg->xid_info[1] = 1;	/* LLC types/classes: Type 1 LLC */
+	msg->xid_info[2] = 0;	/* XID sender's receive window size (RW) */
+
+	skb->dev = sta->dev;
+	skb->protocol = eth_type_trans(skb, sta->dev);
+	memset(skb->cb, 0, sizeof(skb->cb));
+	netif_rx(skb);
+}
+
+static void sta_apply_parameters(struct ieee80211_local *local,
+				 struct sta_info *sta,
+				 struct station_parameters *params)
+{
+	u32 rates;
+	int i, j;
+	struct ieee80211_hw_mode *mode;
+
+	if (params->station_flags & STATION_FLAG_CHANGED) {
+		sta->flags &= ~WLAN_STA_AUTHORIZED;
+		if (params->station_flags & STATION_FLAG_AUTHORIZED)
+			sta->flags |= WLAN_STA_AUTHORIZED;
+
+		sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
+		if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE)
+			sta->flags |= WLAN_STA_SHORT_PREAMBLE;
+
+		sta->flags &= ~WLAN_STA_WME;
+		if (params->station_flags & STATION_FLAG_WME)
+			sta->flags |= WLAN_STA_WME;
+	}
+
+	if (params->aid) {
+		sta->aid = params->aid;
+		if (sta->aid > IEEE80211_MAX_AID)
+			sta->aid = 0; /* XXX: should this be an error? */
+	}
+
+	if (params->listen_interval >= 0)
+		sta->listen_interval = params->listen_interval;
+
+	if (params->supported_rates) {
+		rates = 0;
+		mode = local->oper_hw_mode;
+		for (i = 0; i < params->supported_rates_len; i++) {
+			int rate = (params->supported_rates[i] & 0x7f) * 5;
+			for (j = 0; j < mode->num_rates; j++) {
+				if (mode->rates[j].rate == rate)
+					rates |= BIT(j);
+			}
+		}
+		sta->supp_rates = rates;
+	}
+}
+
+static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
+				 u8 *mac, struct station_parameters *params)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sta_info *sta;
+	struct ieee80211_sub_if_data *sdata;
+
+	/* Prevent a race with changing the rate control algorithm */
+	if (!netif_running(dev))
+		return -ENETDOWN;
+
+	/* XXX: get sta belonging to dev */
+	sta = sta_info_get(local, mac);
+	if (sta) {
+		sta_info_put(sta);
+		return -EEXIST;
+	}
+
+	if (params->vlan) {
+		sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
+
+		if (sdata->vif.type != IEEE80211_IF_TYPE_VLAN ||
+		    sdata->vif.type != IEEE80211_IF_TYPE_AP)
+			return -EINVAL;
+	} else
+		sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	sta = sta_info_add(local, dev, mac, GFP_KERNEL);
+	if (!sta)
+		return -ENOMEM;
+
+	sta->dev = sdata->dev;
+	if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN ||
+	    sdata->vif.type == IEEE80211_IF_TYPE_AP)
+		ieee80211_send_layer2_update(sta);
+
+	sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
+
+	sta_apply_parameters(local, sta, params);
+
+	rate_control_rate_init(sta, local);
+
+	sta_info_put(sta);
+
+	return 0;
+}
+
+static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
+				 u8 *mac)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sta_info *sta;
+
+	if (mac) {
+		/* XXX: get sta belonging to dev */
+		sta = sta_info_get(local, mac);
+		if (!sta)
+			return -ENOENT;
+
+		sta_info_free(sta);
+		sta_info_put(sta);
+	} else
+		sta_info_flush(local, dev);
+
+	return 0;
+}
+
+static int ieee80211_change_station(struct wiphy *wiphy,
+				    struct net_device *dev,
+				    u8 *mac,
+				    struct station_parameters *params)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sta_info *sta;
+	struct ieee80211_sub_if_data *vlansdata;
+
+	/* XXX: get sta belonging to dev */
+	sta = sta_info_get(local, mac);
+	if (!sta)
+		return -ENOENT;
+
+	if (params->vlan && params->vlan != sta->dev) {
+		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
+
+		if (vlansdata->vif.type != IEEE80211_IF_TYPE_VLAN ||
+		    vlansdata->vif.type != IEEE80211_IF_TYPE_AP)
+			return -EINVAL;
+
+		sta->dev = params->vlan;
+		ieee80211_send_layer2_update(sta);
+	}
+
+	sta_apply_parameters(local, sta, params);
+
+	sta_info_put(sta);
+
+	return 0;
+}
+
 struct cfg80211_ops mac80211_config_ops = {
 	.add_virtual_intf = ieee80211_add_iface,
 	.del_virtual_intf = ieee80211_del_iface,
 	.change_virtual_intf = ieee80211_change_iface,
+	.add_key = ieee80211_add_key,
+	.del_key = ieee80211_del_key,
+	.get_key = ieee80211_get_key,
+	.set_default_key = ieee80211_config_default_key,
+	.add_beacon = ieee80211_add_beacon,
+	.set_beacon = ieee80211_set_beacon,
+	.del_beacon = ieee80211_del_beacon,
+	.add_station = ieee80211_add_station,
+	.del_station = ieee80211_del_station,
+	.change_station = ieee80211_change_station,
+	.get_station = ieee80211_get_station,
 };