mirror of
https://github.com/openwrt/openwrt.git
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225 lines
6.0 KiB
Diff
225 lines
6.0 KiB
Diff
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Subject: mac80211: implement cfg80211's station handling
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This implements station handling from userspace via cfg80211
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in mac80211.
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Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
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---
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net/mac80211/cfg.c | 192 +++++++++++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 192 insertions(+)
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--- everything.orig/net/mac80211/cfg.c 2007-11-08 17:11:52.351521702 +0100
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+++ everything/net/mac80211/cfg.c 2007-11-08 17:15:51.801523493 +0100
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@@ -14,6 +14,7 @@
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#include <net/cfg80211.h>
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#include "ieee80211_i.h"
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#include "cfg.h"
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+#include "ieee80211_rate.h"
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static enum ieee80211_if_types
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nl80211_type_to_mac80211_type(enum nl80211_iftype type)
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@@ -428,6 +429,194 @@ static int ieee80211_del_beacon(struct w
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return ieee80211_if_config_beacon(dev);
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}
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+/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
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+struct iapp_layer2_update {
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+ u8 da[ETH_ALEN]; /* broadcast */
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+ u8 sa[ETH_ALEN]; /* STA addr */
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+ __be16 len; /* 6 */
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+ u8 dsap; /* 0 */
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+ u8 ssap; /* 0 */
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+ u8 control;
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+ u8 xid_info[3];
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+} __attribute__ ((packed));
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+
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+static void ieee80211_send_layer2_update(struct sta_info *sta)
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+{
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+ struct iapp_layer2_update *msg;
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+ struct sk_buff *skb;
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+
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+ /* Send Level 2 Update Frame to update forwarding tables in layer 2
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+ * bridge devices */
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+
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+ skb = dev_alloc_skb(sizeof(*msg));
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+ if (!skb)
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+ return;
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+ msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
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+
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+ /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
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+ * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
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+
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+ memset(msg->da, 0xff, ETH_ALEN);
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+ memcpy(msg->sa, sta->addr, ETH_ALEN);
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+ msg->len = htons(6);
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+ msg->dsap = 0;
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+ msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
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+ msg->control = 0xaf; /* XID response lsb.1111F101.
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+ * F=0 (no poll command; unsolicited frame) */
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+ msg->xid_info[0] = 0x81; /* XID format identifier */
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+ msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
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+ msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
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+
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+ skb->dev = sta->dev;
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+ skb->protocol = eth_type_trans(skb, sta->dev);
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+ memset(skb->cb, 0, sizeof(skb->cb));
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+ netif_rx(skb);
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+}
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+
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+static void sta_apply_parameters(struct ieee80211_local *local,
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+ struct sta_info *sta,
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+ struct station_parameters *params)
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+{
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+ u32 rates;
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+ int i, j;
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+ struct ieee80211_hw_mode *mode;
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+
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+ if (params->station_flags & STATION_FLAG_CHANGED) {
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+ sta->flags &= ~WLAN_STA_AUTHORIZED;
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+ if (params->station_flags & STATION_FLAG_AUTHORIZED)
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+ sta->flags |= WLAN_STA_AUTHORIZED;
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+
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+ sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
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+ if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE)
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+ sta->flags |= WLAN_STA_SHORT_PREAMBLE;
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+
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+ sta->flags &= ~WLAN_STA_WME;
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+ if (params->station_flags & STATION_FLAG_WME)
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+ sta->flags |= WLAN_STA_WME;
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+ }
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+
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+ if (params->aid) {
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+ sta->aid = params->aid;
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+ if (sta->aid > IEEE80211_MAX_AID)
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+ sta->aid = 0; /* XXX: should this be an error? */
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+ }
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+
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+ if (params->listen_interval >= 0)
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+ sta->listen_interval = params->listen_interval;
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+
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+ if (params->supported_rates) {
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+ rates = 0;
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+ mode = local->oper_hw_mode;
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+ for (i = 0; i < params->supported_rates_len; i++) {
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+ int rate = (params->supported_rates[i] & 0x7f) * 5;
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+ for (j = 0; j < mode->num_rates; j++) {
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+ if (mode->rates[j].rate == rate)
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+ rates |= BIT(j);
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+ }
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+ }
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+ sta->supp_rates = rates;
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+ }
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+}
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+
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+static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
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+ u8 *mac, struct station_parameters *params)
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+{
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+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
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+ struct sta_info *sta;
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+ struct ieee80211_sub_if_data *sdata;
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+
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+ /* Prevent a race with changing the rate control algorithm */
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+ if (!netif_running(dev))
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+ return -ENETDOWN;
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+
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+ /* XXX: get sta belonging to dev */
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+ sta = sta_info_get(local, mac);
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+ if (sta) {
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+ sta_info_put(sta);
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+ return -EEXIST;
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+ }
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+
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+ if (params->vlan) {
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+ sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
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+
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+ if (sdata->type != IEEE80211_IF_TYPE_VLAN ||
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+ sdata->type != IEEE80211_IF_TYPE_AP)
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+ return -EINVAL;
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+ } else
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+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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+
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+ sta = sta_info_add(local, dev, mac, GFP_KERNEL);
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+ if (!sta)
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+ return -ENOMEM;
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+
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+ sta->dev = sdata->dev;
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+ if (sdata->type == IEEE80211_IF_TYPE_VLAN ||
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+ sdata->type == IEEE80211_IF_TYPE_AP)
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+ ieee80211_send_layer2_update(sta);
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+
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+ sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
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+
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+ sta_apply_parameters(local, sta, params);
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+
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+ rate_control_rate_init(sta, local);
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+
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+ sta_info_put(sta);
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+
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+ return 0;
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+}
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+
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+static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
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+ u8 *mac)
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+{
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+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
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+ struct sta_info *sta;
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+
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+ if (mac) {
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+ /* XXX: get sta belonging to dev */
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+ sta = sta_info_get(local, mac);
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+ if (!sta)
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+ return -ENOENT;
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+
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+ sta_info_free(sta);
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+ sta_info_put(sta);
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+ } else
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+ sta_info_flush(local, dev);
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+
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+ return 0;
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+}
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+
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+static int ieee80211_change_station(struct wiphy *wiphy,
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+ struct net_device *dev,
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+ u8 *mac,
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+ struct station_parameters *params)
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+{
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+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
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+ struct sta_info *sta;
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+ struct ieee80211_sub_if_data *vlansdata;
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+
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+ /* XXX: get sta belonging to dev */
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+ sta = sta_info_get(local, mac);
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+ if (!sta)
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+ return -ENOENT;
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+
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+ if (params->vlan && params->vlan != sta->dev) {
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+ vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
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+
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+ if (vlansdata->type != IEEE80211_IF_TYPE_VLAN ||
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+ vlansdata->type != IEEE80211_IF_TYPE_AP)
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+ return -EINVAL;
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+
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+ sta->dev = params->vlan;
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+ ieee80211_send_layer2_update(sta);
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+ }
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+
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+ sta_apply_parameters(local, sta, params);
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+
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+ sta_info_put(sta);
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+
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+ return 0;
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+}
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+
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struct cfg80211_ops mac80211_config_ops = {
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.add_virtual_intf = ieee80211_add_iface,
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.del_virtual_intf = ieee80211_del_iface,
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@@ -439,4 +628,7 @@ struct cfg80211_ops mac80211_config_ops
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.add_beacon = ieee80211_add_beacon,
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.set_beacon = ieee80211_set_beacon,
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.del_beacon = ieee80211_del_beacon,
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+ .add_station = ieee80211_add_station,
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+ .del_station = ieee80211_del_station,
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+ .change_station = ieee80211_change_station,
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};
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