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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /net/mac80211/iface.c
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'net/mac80211/iface.c')
-rw-r--r--net/mac80211/iface.c1418
1 files changed, 1418 insertions, 0 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
new file mode 100644
index 00000000000..8e2137bd87e
--- /dev/null
+++ b/net/mac80211/iface.c
@@ -0,0 +1,1418 @@
+/*
+ * Interface handling (except master interface)
+ *
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
+ * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/if_arp.h>
+#include <linux/netdevice.h>
+#include <linux/rtnetlink.h>
+#include <net/mac80211.h>
+#include <net/ieee80211_radiotap.h>
+#include "ieee80211_i.h"
+#include "sta_info.h"
+#include "debugfs_netdev.h"
+#include "mesh.h"
+#include "led.h"
+#include "driver-ops.h"
+#include "wme.h"
+#include "rate.h"
+
+/**
+ * DOC: Interface list locking
+ *
+ * The interface list in each struct ieee80211_local is protected
+ * three-fold:
+ *
+ * (1) modifications may only be done under the RTNL
+ * (2) modifications and readers are protected against each other by
+ * the iflist_mtx.
+ * (3) modifications are done in an RCU manner so atomic readers
+ * can traverse the list in RCU-safe blocks.
+ *
+ * As a consequence, reads (traversals) of the list can be protected
+ * by either the RTNL, the iflist_mtx or RCU.
+ */
+
+
+static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
+{
+ int meshhdrlen;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ meshhdrlen = (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) ? 5 : 0;
+
+ /* FIX: what would be proper limits for MTU?
+ * This interface uses 802.3 frames. */
+ if (new_mtu < 256 ||
+ new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) {
+ return -EINVAL;
+ }
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+static int ieee80211_change_mac(struct net_device *dev, void *addr)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sockaddr *sa = addr;
+ int ret;
+
+ if (ieee80211_sdata_running(sdata))
+ return -EBUSY;
+
+ ret = eth_mac_addr(dev, sa);
+
+ if (ret == 0)
+ memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN);
+
+ return ret;
+}
+
+static inline int identical_mac_addr_allowed(int type1, int type2)
+{
+ return type1 == NL80211_IFTYPE_MONITOR ||
+ type2 == NL80211_IFTYPE_MONITOR ||
+ (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) ||
+ (type1 == NL80211_IFTYPE_WDS &&
+ (type2 == NL80211_IFTYPE_WDS ||
+ type2 == NL80211_IFTYPE_AP)) ||
+ (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) ||
+ (type1 == NL80211_IFTYPE_AP_VLAN &&
+ (type2 == NL80211_IFTYPE_AP ||
+ type2 == NL80211_IFTYPE_AP_VLAN));
+}
+
+static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata,
+ enum nl80211_iftype iftype)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_sub_if_data *nsdata;
+ struct net_device *dev = sdata->dev;
+
+ ASSERT_RTNL();
+
+ /* we hold the RTNL here so can safely walk the list */
+ list_for_each_entry(nsdata, &local->interfaces, list) {
+ struct net_device *ndev = nsdata->dev;
+
+ if (ndev != dev && ieee80211_sdata_running(nsdata)) {
+ /*
+ * Allow only a single IBSS interface to be up at any
+ * time. This is restricted because beacon distribution
+ * cannot work properly if both are in the same IBSS.
+ *
+ * To remove this restriction we'd have to disallow them
+ * from setting the same SSID on different IBSS interfaces
+ * belonging to the same hardware. Then, however, we're
+ * faced with having to adopt two different TSF timers...
+ */
+ if (iftype == NL80211_IFTYPE_ADHOC &&
+ nsdata->vif.type == NL80211_IFTYPE_ADHOC)
+ return -EBUSY;
+
+ /*
+ * The remaining checks are only performed for interfaces
+ * with the same MAC address.
+ */
+ if (compare_ether_addr(dev->dev_addr, ndev->dev_addr))
+ continue;
+
+ /*
+ * check whether it may have the same address
+ */
+ if (!identical_mac_addr_allowed(iftype,
+ nsdata->vif.type))
+ return -ENOTUNIQ;
+
+ /*
+ * can only add VLANs to enabled APs
+ */
+ if (iftype == NL80211_IFTYPE_AP_VLAN &&
+ nsdata->vif.type == NL80211_IFTYPE_AP)
+ sdata->bss = &nsdata->u.ap;
+ }
+ }
+
+ return 0;
+}
+
+void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
+ const int offset)
+{
+ struct ieee80211_local *local = sdata->local;
+ u32 flags = sdata->u.mntr_flags;
+
+#define ADJUST(_f, _s) do { \
+ if (flags & MONITOR_FLAG_##_f) \
+ local->fif_##_s += offset; \
+ } while (0)
+
+ ADJUST(FCSFAIL, fcsfail);
+ ADJUST(PLCPFAIL, plcpfail);
+ ADJUST(CONTROL, control);
+ ADJUST(CONTROL, pspoll);
+ ADJUST(OTHER_BSS, other_bss);
+
+#undef ADJUST
+}
+
+/*
+ * NOTE: Be very careful when changing this function, it must NOT return
+ * an error on interface type changes that have been pre-checked, so most
+ * checks should be in ieee80211_check_concurrent_iface.
+ */
+static int ieee80211_do_open(struct net_device *dev, bool coming_up)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct sta_info *sta;
+ u32 changed = 0;
+ int res;
+ u32 hw_reconf_flags = 0;
+
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_WDS:
+ if (!is_valid_ether_addr(sdata->u.wds.remote_addr))
+ return -ENOLINK;
+ break;
+ case NL80211_IFTYPE_AP_VLAN: {
+ struct ieee80211_sub_if_data *master;
+
+ if (!sdata->bss)
+ return -ENOLINK;
+
+ list_add(&sdata->u.vlan.list, &sdata->bss->vlans);
+
+ master = container_of(sdata->bss,
+ struct ieee80211_sub_if_data, u.ap);
+ sdata->control_port_protocol =
+ master->control_port_protocol;
+ sdata->control_port_no_encrypt =
+ master->control_port_no_encrypt;
+ break;
+ }
+ case NL80211_IFTYPE_AP:
+ sdata->bss = &sdata->u.ap;
+ break;
+ case NL80211_IFTYPE_MESH_POINT:
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_MONITOR:
+ case NL80211_IFTYPE_ADHOC:
+ /* no special treatment */
+ break;
+ case NL80211_IFTYPE_UNSPECIFIED:
+ case NUM_NL80211_IFTYPES:
+ case NL80211_IFTYPE_P2P_CLIENT:
+ case NL80211_IFTYPE_P2P_GO:
+ /* cannot happen */
+ WARN_ON(1);
+ break;
+ }
+
+ if (local->open_count == 0) {
+ res = drv_start(local);
+ if (res)
+ goto err_del_bss;
+ if (local->ops->napi_poll)
+ napi_enable(&local->napi);
+ /* we're brought up, everything changes */
+ hw_reconf_flags = ~0;
+ ieee80211_led_radio(local, true);
+ ieee80211_mod_tpt_led_trig(local,
+ IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
+ }
+
+ /*
+ * Copy the hopefully now-present MAC address to
+ * this interface, if it has the special null one.
+ */
+ if (is_zero_ether_addr(dev->dev_addr)) {
+ memcpy(dev->dev_addr,
+ local->hw.wiphy->perm_addr,
+ ETH_ALEN);
+ memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN);
+
+ if (!is_valid_ether_addr(dev->dev_addr)) {
+ if (!local->open_count)
+ drv_stop(local);
+ return -EADDRNOTAVAIL;
+ }
+ }
+
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_AP_VLAN:
+ /* no need to tell driver */
+ break;
+ case NL80211_IFTYPE_MONITOR:
+ if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) {
+ local->cooked_mntrs++;
+ break;
+ }
+
+ /* must be before the call to ieee80211_configure_filter */
+ local->monitors++;
+ if (local->monitors == 1) {
+ local->hw.conf.flags |= IEEE80211_CONF_MONITOR;
+ hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR;
+ }
+
+ ieee80211_adjust_monitor_flags(sdata, 1);
+ ieee80211_configure_filter(local);
+
+ netif_carrier_on(dev);
+ break;
+ default:
+ if (coming_up) {
+ res = drv_add_interface(local, sdata);
+ if (res)
+ goto err_stop;
+ }
+
+ if (sdata->vif.type == NL80211_IFTYPE_AP) {
+ local->fif_pspoll++;
+ local->fif_probe_req++;
+
+ ieee80211_configure_filter(local);
+ } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
+ local->fif_probe_req++;
+ }
+
+ changed |= ieee80211_reset_erp_info(sdata);
+ ieee80211_bss_info_change_notify(sdata, changed);
+
+ if (sdata->vif.type == NL80211_IFTYPE_STATION ||
+ sdata->vif.type == NL80211_IFTYPE_ADHOC)
+ netif_carrier_off(dev);
+ else
+ netif_carrier_on(dev);
+
+ /*
+ * set default queue parameters so drivers don't
+ * need to initialise the hardware if the hardware
+ * doesn't start up with sane defaults
+ */
+ ieee80211_set_wmm_default(sdata);
+ }
+
+ set_bit(SDATA_STATE_RUNNING, &sdata->state);
+
+ if (sdata->vif.type == NL80211_IFTYPE_WDS) {
+ /* Create STA entry for the WDS peer */
+ sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr,
+ GFP_KERNEL);
+ if (!sta) {
+ res = -ENOMEM;
+ goto err_del_interface;
+ }
+
+ sta_info_move_state(sta, IEEE80211_STA_AUTH);
+ sta_info_move_state(sta, IEEE80211_STA_ASSOC);
+ sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
+
+ res = sta_info_insert(sta);
+ if (res) {
+ /* STA has been freed */
+ goto err_del_interface;
+ }
+
+ rate_control_rate_init(sta);
+ }
+
+ /*
+ * set_multicast_list will be invoked by the networking core
+ * which will check whether any increments here were done in
+ * error and sync them down to the hardware as filter flags.
+ */
+ if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
+ atomic_inc(&local->iff_allmultis);
+
+ if (sdata->flags & IEEE80211_SDATA_PROMISC)
+ atomic_inc(&local->iff_promiscs);
+
+ mutex_lock(&local->mtx);
+ hw_reconf_flags |= __ieee80211_recalc_idle(local);
+ mutex_unlock(&local->mtx);
+
+ if (coming_up)
+ local->open_count++;
+
+ if (hw_reconf_flags)
+ ieee80211_hw_config(local, hw_reconf_flags);
+
+ ieee80211_recalc_ps(local, -1);
+
+ netif_tx_start_all_queues(dev);
+
+ return 0;
+ err_del_interface:
+ drv_remove_interface(local, sdata);
+ err_stop:
+ if (!local->open_count)
+ drv_stop(local);
+ err_del_bss:
+ sdata->bss = NULL;
+ if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+ list_del(&sdata->u.vlan.list);
+ clear_bit(SDATA_STATE_RUNNING, &sdata->state);
+ return res;
+}
+
+static int ieee80211_open(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int err;
+
+ /* fail early if user set an invalid address */
+ if (!is_valid_ether_addr(dev->dev_addr))
+ return -EADDRNOTAVAIL;
+
+ err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type);
+ if (err)
+ return err;
+
+ return ieee80211_do_open(dev, true);
+}
+
+static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
+ bool going_down)
+{
+ struct ieee80211_local *local = sdata->local;
+ unsigned long flags;
+ struct sk_buff *skb, *tmp;
+ u32 hw_reconf_flags = 0;
+ int i;
+ enum nl80211_channel_type orig_ct;
+
+ clear_bit(SDATA_STATE_RUNNING, &sdata->state);
+
+ if (local->scan_sdata == sdata)
+ ieee80211_scan_cancel(local);
+
+ /*
+ * Stop TX on this interface first.
+ */
+ netif_tx_stop_all_queues(sdata->dev);
+
+ /*
+ * Purge work for this interface.
+ */
+ ieee80211_work_purge(sdata);
+
+ /*
+ * Remove all stations associated with this interface.
+ *
+ * This must be done before calling ops->remove_interface()
+ * because otherwise we can later invoke ops->sta_notify()
+ * whenever the STAs are removed, and that invalidates driver
+ * assumptions about always getting a vif pointer that is valid
+ * (because if we remove a STA after ops->remove_interface()
+ * the driver will have removed the vif info already!)
+ *
+ * This is relevant only in AP, WDS and mesh modes, since in
+ * all other modes we've already removed all stations when
+ * disconnecting etc.
+ */
+ sta_info_flush(local, sdata);
+
+ /*
+ * Don't count this interface for promisc/allmulti while it
+ * is down. dev_mc_unsync() will invoke set_multicast_list
+ * on the master interface which will sync these down to the
+ * hardware as filter flags.
+ */
+ if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
+ atomic_dec(&local->iff_allmultis);
+
+ if (sdata->flags & IEEE80211_SDATA_PROMISC)
+ atomic_dec(&local->iff_promiscs);
+
+ if (sdata->vif.type == NL80211_IFTYPE_AP) {
+ local->fif_pspoll--;
+ local->fif_probe_req--;
+ } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
+ local->fif_probe_req--;
+ }
+
+ netif_addr_lock_bh(sdata->dev);
+ spin_lock_bh(&local->filter_lock);
+ __hw_addr_unsync(&local->mc_list, &sdata->dev->mc,
+ sdata->dev->addr_len);
+ spin_unlock_bh(&local->filter_lock);
+ netif_addr_unlock_bh(sdata->dev);
+
+ ieee80211_configure_filter(local);
+
+ del_timer_sync(&local->dynamic_ps_timer);
+ cancel_work_sync(&local->dynamic_ps_enable_work);
+
+ /* APs need special treatment */
+ if (sdata->vif.type == NL80211_IFTYPE_AP) {
+ struct ieee80211_sub_if_data *vlan, *tmpsdata;
+ struct beacon_data *old_beacon =
+ rtnl_dereference(sdata->u.ap.beacon);
+ struct sk_buff *old_probe_resp =
+ rtnl_dereference(sdata->u.ap.probe_resp);
+
+ /* sdata_running will return false, so this will disable */
+ ieee80211_bss_info_change_notify(sdata,
+ BSS_CHANGED_BEACON_ENABLED);
+
+ /* remove beacon and probe response */
+ RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
+ RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
+ synchronize_rcu();
+ kfree(old_beacon);
+ kfree_skb(old_probe_resp);
+
+ /* down all dependent devices, that is VLANs */
+ list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans,
+ u.vlan.list)
+ dev_close(vlan->dev);
+ WARN_ON(!list_empty(&sdata->u.ap.vlans));
+
+ /* free all potentially still buffered bcast frames */
+ local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps_bc_buf);
+ skb_queue_purge(&sdata->u.ap.ps_bc_buf);
+ }
+
+ if (going_down)
+ local->open_count--;
+
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_AP_VLAN:
+ list_del(&sdata->u.vlan.list);
+ /* no need to tell driver */
+ break;
+ case NL80211_IFTYPE_MONITOR:
+ if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) {
+ local->cooked_mntrs--;
+ break;
+ }
+
+ local->monitors--;
+ if (local->monitors == 0) {
+ local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR;
+ hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR;
+ }
+
+ ieee80211_adjust_monitor_flags(sdata, -1);
+ ieee80211_configure_filter(local);
+ break;
+ default:
+ flush_work(&sdata->work);
+ /*
+ * When we get here, the interface is marked down.
+ * Call synchronize_rcu() to wait for the RX path
+ * should it be using the interface and enqueuing
+ * frames at this very time on another CPU.
+ */
+ synchronize_rcu();
+ skb_queue_purge(&sdata->skb_queue);
+
+ /*
+ * Disable beaconing here for mesh only, AP and IBSS
+ * are already taken care of.
+ */
+ if (sdata->vif.type == NL80211_IFTYPE_MESH_POINT)
+ ieee80211_bss_info_change_notify(sdata,
+ BSS_CHANGED_BEACON_ENABLED);
+
+ /*
+ * Free all remaining keys, there shouldn't be any,
+ * except maybe group keys in AP more or WDS?
+ */
+ ieee80211_free_keys(sdata);
+
+ if (going_down)
+ drv_remove_interface(local, sdata);
+ }
+
+ sdata->bss = NULL;
+
+ mutex_lock(&local->mtx);
+ hw_reconf_flags |= __ieee80211_recalc_idle(local);
+ mutex_unlock(&local->mtx);
+
+ ieee80211_recalc_ps(local, -1);
+
+ if (local->open_count == 0) {
+ if (local->ops->napi_poll)
+ napi_disable(&local->napi);
+ ieee80211_clear_tx_pending(local);
+ ieee80211_stop_device(local);
+
+ /* no reconfiguring after stop! */
+ hw_reconf_flags = 0;
+ }
+
+ /* Re-calculate channel-type, in case there are multiple vifs
+ * on different channel types.
+ */
+ orig_ct = local->_oper_channel_type;
+ ieee80211_set_channel_type(local, NULL, NL80211_CHAN_NO_HT);
+
+ /* do after stop to avoid reconfiguring when we stop anyway */
+ if (hw_reconf_flags || (orig_ct != local->_oper_channel_type))
+ ieee80211_hw_config(local, hw_reconf_flags);
+
+ spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
+ for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
+ skb_queue_walk_safe(&local->pending[i], skb, tmp) {
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ if (info->control.vif == &sdata->vif) {
+ __skb_unlink(skb, &local->pending[i]);
+ dev_kfree_skb_irq(skb);
+ }
+ }
+ }
+ spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
+}
+
+static int ieee80211_stop(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ ieee80211_do_stop(sdata, true);
+
+ return 0;
+}
+
+static void ieee80211_set_multicast_list(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ int allmulti, promisc, sdata_allmulti, sdata_promisc;
+
+ allmulti = !!(dev->flags & IFF_ALLMULTI);
+ promisc = !!(dev->flags & IFF_PROMISC);
+ sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI);
+ sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC);
+
+ if (allmulti != sdata_allmulti) {
+ if (dev->flags & IFF_ALLMULTI)
+ atomic_inc(&local->iff_allmultis);
+ else
+ atomic_dec(&local->iff_allmultis);
+ sdata->flags ^= IEEE80211_SDATA_ALLMULTI;
+ }
+
+ if (promisc != sdata_promisc) {
+ if (dev->flags & IFF_PROMISC)
+ atomic_inc(&local->iff_promiscs);
+ else
+ atomic_dec(&local->iff_promiscs);
+ sdata->flags ^= IEEE80211_SDATA_PROMISC;
+ }
+ spin_lock_bh(&local->filter_lock);
+ __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len);
+ spin_unlock_bh(&local->filter_lock);
+ ieee80211_queue_work(&local->hw, &local->reconfig_filter);
+}
+
+/*
+ * Called when the netdev is removed or, by the code below, before
+ * the interface type changes.
+ */
+static void ieee80211_teardown_sdata(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ int flushed;
+ int i;
+
+ /* free extra data */
+ ieee80211_free_keys(sdata);
+
+ ieee80211_debugfs_remove_netdev(sdata);
+
+ for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
+ __skb_queue_purge(&sdata->fragments[i].skb_list);
+ sdata->fragment_next = 0;
+
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_rmc_free(sdata);
+
+ flushed = sta_info_flush(local, sdata);
+ WARN_ON(flushed);
+}
+
+static u16 ieee80211_netdev_select_queue(struct net_device *dev,
+ struct sk_buff *skb)
+{
+ return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb);
+}
+
+static const struct net_device_ops ieee80211_dataif_ops = {
+ .ndo_open = ieee80211_open,
+ .ndo_stop = ieee80211_stop,
+ .ndo_uninit = ieee80211_teardown_sdata,
+ .ndo_start_xmit = ieee80211_subif_start_xmit,
+ .ndo_set_rx_mode = ieee80211_set_multicast_list,
+ .ndo_change_mtu = ieee80211_change_mtu,
+ .ndo_set_mac_address = ieee80211_change_mac,
+ .ndo_select_queue = ieee80211_netdev_select_queue,
+};
+
+static u16 ieee80211_monitor_select_queue(struct net_device *dev,
+ struct sk_buff *skb)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_hdr *hdr;
+ struct ieee80211_radiotap_header *rtap = (void *)skb->data;
+
+ if (local->hw.queues < 4)
+ return 0;
+
+ if (skb->len < 4 ||
+ skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */)
+ return 0; /* doesn't matter, frame will be dropped */
+
+ hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len));
+
+ return ieee80211_select_queue_80211(local, skb, hdr);
+}
+
+static const struct net_device_ops ieee80211_monitorif_ops = {
+ .ndo_open = ieee80211_open,
+ .ndo_stop = ieee80211_stop,
+ .ndo_uninit = ieee80211_teardown_sdata,
+ .ndo_start_xmit = ieee80211_monitor_start_xmit,
+ .ndo_set_rx_mode = ieee80211_set_multicast_list,
+ .ndo_change_mtu = ieee80211_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_select_queue = ieee80211_monitor_select_queue,
+};
+
+static void ieee80211_if_setup(struct net_device *dev)
+{
+ ether_setup(dev);
+ dev->priv_flags &= ~IFF_TX_SKB_SHARING;
+ dev->netdev_ops = &ieee80211_dataif_ops;
+ dev->destructor = free_netdev;
+}
+
+static void ieee80211_iface_work(struct work_struct *work)
+{
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data, work);
+ struct ieee80211_local *local = sdata->local;
+ struct sk_buff *skb;
+ struct sta_info *sta;
+ struct ieee80211_ra_tid *ra_tid;
+
+ if (!ieee80211_sdata_running(sdata))
+ return;
+
+ if (local->scanning)
+ return;
+
+ /*
+ * ieee80211_queue_work() should have picked up most cases,
+ * here we'll pick the rest.
+ */
+ if (WARN(local->suspended,
+ "interface work scheduled while going to suspend\n"))
+ return;
+
+ /* first process frames */
+ while ((skb = skb_dequeue(&sdata->skb_queue))) {
+ struct ieee80211_mgmt *mgmt = (void *)skb->data;
+
+ if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) {
+ ra_tid = (void *)&skb->cb;
+ ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra,
+ ra_tid->tid);
+ } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) {
+ ra_tid = (void *)&skb->cb;
+ ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra,
+ ra_tid->tid);
+ } else if (ieee80211_is_action(mgmt->frame_control) &&
+ mgmt->u.action.category == WLAN_CATEGORY_BACK) {
+ int len = skb->len;
+
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get_bss(sdata, mgmt->sa);
+ if (sta) {
+ switch (mgmt->u.action.u.addba_req.action_code) {
+ case WLAN_ACTION_ADDBA_REQ:
+ ieee80211_process_addba_request(
+ local, sta, mgmt, len);
+ break;
+ case WLAN_ACTION_ADDBA_RESP:
+ ieee80211_process_addba_resp(local, sta,
+ mgmt, len);
+ break;
+ case WLAN_ACTION_DELBA:
+ ieee80211_process_delba(sdata, sta,
+ mgmt, len);
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
+ }
+ mutex_unlock(&local->sta_mtx);
+ } else if (ieee80211_is_data_qos(mgmt->frame_control)) {
+ struct ieee80211_hdr *hdr = (void *)mgmt;
+ /*
+ * So the frame isn't mgmt, but frame_control
+ * is at the right place anyway, of course, so
+ * the if statement is correct.
+ *
+ * Warn if we have other data frame types here,
+ * they must not get here.
+ */
+ WARN_ON(hdr->frame_control &
+ cpu_to_le16(IEEE80211_STYPE_NULLFUNC));
+ WARN_ON(!(hdr->seq_ctrl &
+ cpu_to_le16(IEEE80211_SCTL_FRAG)));
+ /*
+ * This was a fragment of a frame, received while
+ * a block-ack session was active. That cannot be
+ * right, so terminate the session.
+ */
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get_bss(sdata, mgmt->sa);
+ if (sta) {
+ u16 tid = *ieee80211_get_qos_ctl(hdr) &
+ IEEE80211_QOS_CTL_TID_MASK;
+
+ __ieee80211_stop_rx_ba_session(
+ sta, tid, WLAN_BACK_RECIPIENT,
+ WLAN_REASON_QSTA_REQUIRE_SETUP,
+ true);
+ }
+ mutex_unlock(&local->sta_mtx);
+ } else switch (sdata->vif.type) {
+ case NL80211_IFTYPE_STATION:
+ ieee80211_sta_rx_queued_mgmt(sdata, skb);
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ ieee80211_ibss_rx_queued_mgmt(sdata, skb);
+ break;
+ case NL80211_IFTYPE_MESH_POINT:
+ if (!ieee80211_vif_is_mesh(&sdata->vif))
+ break;
+ ieee80211_mesh_rx_queued_mgmt(sdata, skb);
+ break;
+ default:
+ WARN(1, "frame for unexpected interface type");
+ break;
+ }
+
+ kfree_skb(skb);
+ }
+
+ /* then other type-dependent work */
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_STATION:
+ ieee80211_sta_work(sdata);
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ ieee80211_ibss_work(sdata);
+ break;
+ case NL80211_IFTYPE_MESH_POINT:
+ if (!ieee80211_vif_is_mesh(&sdata->vif))
+ break;
+ ieee80211_mesh_work(sdata);
+ break;
+ default:
+ break;
+ }
+}
+
+
+/*
+ * Helper function to initialise an interface to a specific type.
+ */
+static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
+ enum nl80211_iftype type)
+{
+ /* clear type-dependent union */
+ memset(&sdata->u, 0, sizeof(sdata->u));
+
+ /* and set some type-dependent values */
+ sdata->vif.type = type;
+ sdata->vif.p2p = false;
+ sdata->dev->netdev_ops = &ieee80211_dataif_ops;
+ sdata->wdev.iftype = type;
+
+ sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE);
+ sdata->control_port_no_encrypt = false;
+
+ sdata->noack_map = 0;
+
+ /* only monitor differs */
+ sdata->dev->type = ARPHRD_ETHER;
+
+ skb_queue_head_init(&sdata->skb_queue);
+ INIT_WORK(&sdata->work, ieee80211_iface_work);
+
+ switch (type) {
+ case NL80211_IFTYPE_P2P_GO:
+ type = NL80211_IFTYPE_AP;
+ sdata->vif.type = type;
+ sdata->vif.p2p = true;
+ /* fall through */
+ case NL80211_IFTYPE_AP:
+ skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
+ INIT_LIST_HEAD(&sdata->u.ap.vlans);
+ break;
+ case NL80211_IFTYPE_P2P_CLIENT:
+ type = NL80211_IFTYPE_STATION;
+ sdata->vif.type = type;
+ sdata->vif.p2p = true;
+ /* fall through */
+ case NL80211_IFTYPE_STATION:
+ ieee80211_sta_setup_sdata(sdata);
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ ieee80211_ibss_setup_sdata(sdata);
+ break;
+ case NL80211_IFTYPE_MESH_POINT:
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ ieee80211_mesh_init_sdata(sdata);
+ break;
+ case NL80211_IFTYPE_MONITOR:
+ sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP;
+ sdata->dev->netdev_ops = &ieee80211_monitorif_ops;
+ sdata->u.mntr_flags = MONITOR_FLAG_CONTROL |
+ MONITOR_FLAG_OTHER_BSS;
+ break;
+ case NL80211_IFTYPE_WDS:
+ case NL80211_IFTYPE_AP_VLAN:
+ break;
+ case NL80211_IFTYPE_UNSPECIFIED:
+ case NUM_NL80211_IFTYPES:
+ BUG();
+ break;
+ }
+
+ ieee80211_debugfs_add_netdev(sdata);
+}
+
+static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata,
+ enum nl80211_iftype type)
+{
+ struct ieee80211_local *local = sdata->local;
+ int ret, err;
+ enum nl80211_iftype internal_type = type;
+ bool p2p = false;
+
+ ASSERT_RTNL();
+
+ if (!local->ops->change_interface)
+ return -EBUSY;
+
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_ADHOC:
+ /*
+ * Could maybe also all others here?
+ * Just not sure how that interacts
+ * with the RX/config path e.g. for
+ * mesh.
+ */
+ break;
+ default:
+ return -EBUSY;
+ }
+
+ switch (type) {
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_ADHOC:
+ /*
+ * Could probably support everything
+ * but WDS here (WDS do_open can fail
+ * under memory pressure, which this
+ * code isn't prepared to handle).
+ */
+ break;
+ case NL80211_IFTYPE_P2P_CLIENT:
+ p2p = true;
+ internal_type = NL80211_IFTYPE_STATION;
+ break;
+ case NL80211_IFTYPE_P2P_GO:
+ p2p = true;
+ internal_type = NL80211_IFTYPE_AP;
+ break;
+ default:
+ return -EBUSY;
+ }
+
+ ret = ieee80211_check_concurrent_iface(sdata, internal_type);
+ if (ret)
+ return ret;
+
+ ieee80211_do_stop(sdata, false);
+
+ ieee80211_teardown_sdata(sdata->dev);
+
+ ret = drv_change_interface(local, sdata, internal_type, p2p);
+ if (ret)
+ type = sdata->vif.type;
+
+ ieee80211_setup_sdata(sdata, type);
+
+ err = ieee80211_do_open(sdata->dev, false);
+ WARN(err, "type change: do_open returned %d", err);
+
+ return ret;
+}
+
+int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
+ enum nl80211_iftype type)
+{
+ int ret;
+
+ ASSERT_RTNL();
+
+ if (type == ieee80211_vif_type_p2p(&sdata->vif))
+ return 0;
+
+ /* Setting ad-hoc mode on non-IBSS channel is not supported. */
+ if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS &&
+ type == NL80211_IFTYPE_ADHOC)
+ return -EOPNOTSUPP;
+
+ if (ieee80211_sdata_running(sdata)) {
+ ret = ieee80211_runtime_change_iftype(sdata, type);
+ if (ret)
+ return ret;
+ } else {
+ /* Purge and reset type-dependent state. */
+ ieee80211_teardown_sdata(sdata->dev);
+ ieee80211_setup_sdata(sdata, type);
+ }
+
+ /* reset some values that shouldn't be kept across type changes */
+ sdata->vif.bss_conf.basic_rates =
+ ieee80211_mandatory_rates(sdata->local,
+ sdata->local->hw.conf.channel->band);
+ sdata->drop_unencrypted = 0;
+ if (type == NL80211_IFTYPE_STATION)
+ sdata->u.mgd.use_4addr = false;
+
+ return 0;
+}
+
+static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
+ struct net_device *dev,
+ enum nl80211_iftype type)
+{
+ struct ieee80211_sub_if_data *sdata;
+ u64 mask, start, addr, val, inc;
+ u8 *m;
+ u8 tmp_addr[ETH_ALEN];
+ int i;
+
+ /* default ... something at least */
+ memcpy(dev->perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
+
+ if (is_zero_ether_addr(local->hw.wiphy->addr_mask) &&
+ local->hw.wiphy->n_addresses <= 1)
+ return;
+
+
+ mutex_lock(&local->iflist_mtx);
+
+ switch (type) {
+ case NL80211_IFTYPE_MONITOR:
+ /* doesn't matter */
+ break;
+ case NL80211_IFTYPE_WDS:
+ case NL80211_IFTYPE_AP_VLAN:
+ /* match up with an AP interface */
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (sdata->vif.type != NL80211_IFTYPE_AP)
+ continue;
+ memcpy(dev->perm_addr, sdata->vif.addr, ETH_ALEN);
+ break;
+ }
+ /* keep default if no AP interface present */
+ break;
+ default:
+ /* assign a new address if possible -- try n_addresses first */
+ for (i = 0; i < local->hw.wiphy->n_addresses; i++) {
+ bool used = false;
+
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (memcmp(local->hw.wiphy->addresses[i].addr,
+ sdata->vif.addr, ETH_ALEN) == 0) {
+ used = true;
+ break;
+ }
+ }
+
+ if (!used) {
+ memcpy(dev->perm_addr,
+ local->hw.wiphy->addresses[i].addr,
+ ETH_ALEN);
+ break;
+ }
+ }
+
+ /* try mask if available */
+ if (is_zero_ether_addr(local->hw.wiphy->addr_mask))
+ break;
+
+ m = local->hw.wiphy->addr_mask;
+ mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) |
+ ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) |
+ ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8);
+
+ if (__ffs64(mask) + hweight64(mask) != fls64(mask)) {
+ /* not a contiguous mask ... not handled now! */
+ printk(KERN_DEBUG "not contiguous\n");
+ break;
+ }
+
+ m = local->hw.wiphy->perm_addr;
+ start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) |
+ ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) |
+ ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8);
+
+ inc = 1ULL<<__ffs64(mask);
+ val = (start & mask);
+ addr = (start & ~mask) | (val & mask);
+ do {
+ bool used = false;
+
+ tmp_addr[5] = addr >> 0*8;
+ tmp_addr[4] = addr >> 1*8;
+ tmp_addr[3] = addr >> 2*8;
+ tmp_addr[2] = addr >> 3*8;
+ tmp_addr[1] = addr >> 4*8;
+ tmp_addr[0] = addr >> 5*8;
+
+ val += inc;
+
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (memcmp(tmp_addr, sdata->vif.addr,
+ ETH_ALEN) == 0) {
+ used = true;
+ break;
+ }
+ }
+
+ if (!used) {
+ memcpy(dev->perm_addr, tmp_addr, ETH_ALEN);
+ break;
+ }
+ addr = (start & ~mask) | (val & mask);
+ } while (addr != start);
+
+ break;
+ }
+
+ mutex_unlock(&local->iflist_mtx);
+}
+
+int ieee80211_if_add(struct ieee80211_local *local, const char *name,
+ struct net_device **new_dev, enum nl80211_iftype type,
+ struct vif_params *params)
+{
+ struct net_device *ndev;
+ struct ieee80211_sub_if_data *sdata = NULL;
+ int ret, i;
+
+ ASSERT_RTNL();
+
+ ndev = alloc_netdev_mqs(sizeof(*sdata) + local->hw.vif_data_size,
+ name, ieee80211_if_setup, local->hw.queues, 1);
+ if (!ndev)
+ return -ENOMEM;
+ dev_net_set(ndev, wiphy_net(local->hw.wiphy));
+
+ ndev->needed_headroom = local->tx_headroom +
+ 4*6 /* four MAC addresses */
+ + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */
+ + 6 /* mesh */
+ + 8 /* rfc1042/bridge tunnel */
+ - ETH_HLEN /* ethernet hard_header_len */
+ + IEEE80211_ENCRYPT_HEADROOM;
+ ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM;
+
+ ret = dev_alloc_name(ndev, ndev->name);
+ if (ret < 0)
+ goto fail;
+
+ ieee80211_assign_perm_addr(local, ndev, type);
+ memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN);
+ SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
+
+ /* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */
+ sdata = netdev_priv(ndev);
+ ndev->ieee80211_ptr = &sdata->wdev;
+ memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN);
+ memcpy(sdata->name, ndev->name, IFNAMSIZ);
+
+ /* initialise type-independent data */
+ sdata->wdev.wiphy = local->hw.wiphy;
+ sdata->local = local;
+ sdata->dev = ndev;
+#ifdef CONFIG_INET
+ sdata->arp_filter_state = true;
+#endif
+
+ for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
+ skb_queue_head_init(&sdata->fragments[i].skb_list);
+
+ INIT_LIST_HEAD(&sdata->key_list);
+
+ for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
+ struct ieee80211_supported_band *sband;
+ sband = local->hw.wiphy->bands[i];
+ sdata->rc_rateidx_mask[i] =
+ sband ? (1 << sband->n_bitrates) - 1 : 0;
+ }
+
+ /* setup type-dependent data */
+ ieee80211_setup_sdata(sdata, type);
+
+ if (params) {
+ ndev->ieee80211_ptr->use_4addr = params->use_4addr;
+ if (type == NL80211_IFTYPE_STATION)
+ sdata->u.mgd.use_4addr = params->use_4addr;
+ }
+
+ ret = register_netdevice(ndev);
+ if (ret)
+ goto fail;
+
+ mutex_lock(&local->iflist_mtx);
+ list_add_tail_rcu(&sdata->list, &local->interfaces);
+ mutex_unlock(&local->iflist_mtx);
+
+ if (new_dev)
+ *new_dev = ndev;
+
+ return 0;
+
+ fail:
+ free_netdev(ndev);
+ return ret;
+}
+
+void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata)
+{
+ ASSERT_RTNL();
+
+ mutex_lock(&sdata->local->iflist_mtx);
+ list_del_rcu(&sdata->list);
+ mutex_unlock(&sdata->local->iflist_mtx);
+
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_path_flush_by_iface(sdata);
+
+ synchronize_rcu();
+ unregister_netdevice(sdata->dev);
+}
+
+/*
+ * Remove all interfaces, may only be called at hardware unregistration
+ * time because it doesn't do RCU-safe list removals.
+ */
+void ieee80211_remove_interfaces(struct ieee80211_local *local)
+{
+ struct ieee80211_sub_if_data *sdata, *tmp;
+ LIST_HEAD(unreg_list);
+
+ ASSERT_RTNL();
+
+ mutex_lock(&local->iflist_mtx);
+ list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
+ list_del(&sdata->list);
+
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_path_flush_by_iface(sdata);
+
+ unregister_netdevice_queue(sdata->dev, &unreg_list);
+ }
+ mutex_unlock(&local->iflist_mtx);
+ unregister_netdevice_many(&unreg_list);
+ list_del(&unreg_list);
+}
+
+static u32 ieee80211_idle_off(struct ieee80211_local *local,
+ const char *reason)
+{
+ if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE))
+ return 0;
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ wiphy_debug(local->hw.wiphy, "device no longer idle - %s\n", reason);
+#endif
+
+ local->hw.conf.flags &= ~IEEE80211_CONF_IDLE;
+ return IEEE80211_CONF_CHANGE_IDLE;
+}
+
+static u32 ieee80211_idle_on(struct ieee80211_local *local)
+{
+ if (local->hw.conf.flags & IEEE80211_CONF_IDLE)
+ return 0;
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ wiphy_debug(local->hw.wiphy, "device now idle\n");
+#endif
+
+ drv_flush(local, false);
+
+ local->hw.conf.flags |= IEEE80211_CONF_IDLE;
+ return IEEE80211_CONF_CHANGE_IDLE;
+}
+
+u32 __ieee80211_recalc_idle(struct ieee80211_local *local)
+{
+ struct ieee80211_sub_if_data *sdata;
+ int count = 0;
+ bool working = false, scanning = false, hw_roc = false;
+ struct ieee80211_work *wk;
+ unsigned int led_trig_start = 0, led_trig_stop = 0;
+
+#ifdef CONFIG_PROVE_LOCKING
+ WARN_ON(debug_locks && !lockdep_rtnl_is_held() &&
+ !lockdep_is_held(&local->iflist_mtx));
+#endif
+ lockdep_assert_held(&local->mtx);
+
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (!ieee80211_sdata_running(sdata)) {
+ sdata->vif.bss_conf.idle = true;
+ continue;
+ }
+
+ sdata->old_idle = sdata->vif.bss_conf.idle;
+
+ /* do not count disabled managed interfaces */
+ if (sdata->vif.type == NL80211_IFTYPE_STATION &&
+ !sdata->u.mgd.associated) {
+ sdata->vif.bss_conf.idle = true;
+ continue;
+ }
+ /* do not count unused IBSS interfaces */
+ if (sdata->vif.type == NL80211_IFTYPE_ADHOC &&
+ !sdata->u.ibss.ssid_len) {
+ sdata->vif.bss_conf.idle = true;
+ continue;
+ }
+ /* count everything else */
+ sdata->vif.bss_conf.idle = false;
+ count++;
+ }
+
+ list_for_each_entry(wk, &local->work_list, list) {
+ working = true;
+ wk->sdata->vif.bss_conf.idle = false;
+ }
+
+ if (local->scan_sdata) {
+ scanning = true;
+ local->scan_sdata->vif.bss_conf.idle = false;
+ }
+
+ if (local->hw_roc_channel)
+ hw_roc = true;
+
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (sdata->vif.type == NL80211_IFTYPE_MONITOR ||
+ sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+ continue;
+ if (sdata->old_idle == sdata->vif.bss_conf.idle)
+ continue;
+ if (!ieee80211_sdata_running(sdata))
+ continue;
+ ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IDLE);
+ }
+
+ if (working || scanning || hw_roc)
+ led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK;
+ else
+ led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK;
+
+ if (count)
+ led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED;
+ else
+ led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED;
+
+ ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop);
+
+ if (hw_roc)
+ return ieee80211_idle_off(local, "hw remain-on-channel");
+ if (working)
+ return ieee80211_idle_off(local, "working");
+ if (scanning)
+ return ieee80211_idle_off(local, "scanning");
+ if (!count)
+ return ieee80211_idle_on(local);
+ else
+ return ieee80211_idle_off(local, "in use");
+
+ return 0;
+}
+
+void ieee80211_recalc_idle(struct ieee80211_local *local)
+{
+ u32 chg;
+
+ mutex_lock(&local->iflist_mtx);
+ chg = __ieee80211_recalc_idle(local);
+ mutex_unlock(&local->iflist_mtx);
+ if (chg)
+ ieee80211_hw_config(local, chg);
+}
+
+static int netdev_notify(struct notifier_block *nb,
+ unsigned long state,
+ void *ndev)
+{
+ struct net_device *dev = ndev;
+ struct ieee80211_sub_if_data *sdata;
+
+ if (state != NETDEV_CHANGENAME)
+ return 0;
+
+ if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy)
+ return 0;
+
+ if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
+ return 0;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ memcpy(sdata->name, dev->name, IFNAMSIZ);
+
+ ieee80211_debugfs_rename_netdev(sdata);
+ return 0;
+}
+
+static struct notifier_block mac80211_netdev_notifier = {
+ .notifier_call = netdev_notify,
+};
+
+int ieee80211_iface_init(void)
+{
+ return register_netdevice_notifier(&mac80211_netdev_notifier);
+}
+
+void ieee80211_iface_exit(void)
+{
+ unregister_netdevice_notifier(&mac80211_netdev_notifier);
+}