X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=net%2Fmac80211%2Fiface.c;h=edf21cebeee8984b5b5f1852520fea2065a51e21;hb=51c24aaacaea90c8e87f1dec75a2ac7622b593f8;hp=a72fbebb8ea2bd199b5aac9f53ece22e88ab57ed;hpb=e16ce63c893ff7ccb314d2fbdafbbc915b64d173;p=safe%2Fjmp%2Flinux-2.6 diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index a72fbeb..edf21ce 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -15,11 +15,31 @@ #include #include #include +#include #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" + +/** + * 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) { @@ -42,6 +62,23 @@ static int ieee80211_change_mtu(struct net_device *dev, int 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 || @@ -58,17 +95,15 @@ static inline int identical_mac_addr_allowed(int type1, int type2) static int ieee80211_open(struct net_device *dev) { - struct ieee80211_sub_if_data *sdata, *nsdata; - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_sub_if_data *nsdata; + struct ieee80211_local *local = sdata->local; struct sta_info *sta; - struct ieee80211_if_init_conf conf; u32 changed = 0; int res; - bool need_hw_reconfig = 0; + u32 hw_reconf_flags = 0; u8 null_addr[ETH_ALEN] = {0}; - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - /* fail early if user set an invalid address */ if (compare_ether_addr(dev->dev_addr, null_addr) && !is_valid_ether_addr(dev->dev_addr)) @@ -78,7 +113,7 @@ static int ieee80211_open(struct net_device *dev) list_for_each_entry(nsdata, &local->interfaces, list) { struct net_device *ndev = nsdata->dev; - if (ndev != dev && netif_running(ndev)) { + 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 @@ -148,13 +183,12 @@ static int ieee80211_open(struct net_device *dev) } if (local->open_count == 0) { - res = 0; - if (local->ops->start) - res = local->ops->start(local_to_hw(local)); + res = drv_start(local); if (res) goto err_del_bss; - need_hw_reconfig = 1; - ieee80211_led_radio(local, local->hw.conf.radio_enabled); + /* we're brought up, everything changes */ + hw_reconf_flags = ~0; + ieee80211_led_radio(local, true); } /* @@ -165,25 +199,23 @@ static int ieee80211_open(struct net_device *dev) struct net_device *ndev = nsdata->dev; /* - * No need to check netif_running since we do not allow + * No need to check running since we do not allow * it to start up with this invalid address. */ - if (compare_ether_addr(null_addr, ndev->dev_addr) == 0) + if (compare_ether_addr(null_addr, ndev->dev_addr) == 0) { memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); + memcpy(ndev->perm_addr, ndev->dev_addr, ETH_ALEN); + } } - if (compare_ether_addr(null_addr, local->mdev->dev_addr) == 0) - memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, - ETH_ALEN); - /* * Validate the MAC address for this device. */ if (!is_valid_ether_addr(dev->dev_addr)) { - if (!local->open_count && local->ops->stop) - local->ops->stop(local_to_hw(local)); + if (!local->open_count) + drv_stop(local); return -EADDRNOTAVAIL; } @@ -199,42 +231,45 @@ static int ieee80211_open(struct net_device *dev) /* must be before the call to ieee80211_configure_filter */ local->monitors++; - if (local->monitors == 1) - local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; + if (local->monitors == 1) { + local->hw.conf.flags |= IEEE80211_CONF_MONITOR; + hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; + } if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) local->fif_fcsfail++; if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) local->fif_plcpfail++; - if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) + if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) { local->fif_control++; + local->fif_pspoll++; + } if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) local->fif_other_bss++; - netif_addr_lock_bh(local->mdev); ieee80211_configure_filter(local); - netif_addr_unlock_bh(local->mdev); break; - case NL80211_IFTYPE_STATION: - case NL80211_IFTYPE_ADHOC: - sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; - /* fall through */ default: - conf.vif = &sdata->vif; - conf.type = sdata->vif.type; - conf.mac_addr = dev->dev_addr; - res = local->ops->add_interface(local_to_hw(local), &conf); + res = drv_add_interface(local, &sdata->vif); if (res) goto err_stop; - if (ieee80211_vif_is_mesh(&sdata->vif)) + if (ieee80211_vif_is_mesh(&sdata->vif)) { + local->fif_other_bss++; + ieee80211_configure_filter(local); + ieee80211_start_mesh(sdata); + } else if (sdata->vif.type == NL80211_IFTYPE_AP) { + local->fif_pspoll++; + + ieee80211_configure_filter(local); + } + changed |= ieee80211_reset_erp_info(sdata); ieee80211_bss_info_change_notify(sdata, changed); ieee80211_enable_keys(sdata); - if (sdata->vif.type == NL80211_IFTYPE_STATION && - !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)) + if (sdata->vif.type == NL80211_IFTYPE_STATION) netif_carrier_off(dev); else netif_carrier_on(dev); @@ -259,15 +294,6 @@ static int ieee80211_open(struct net_device *dev) } } - if (local->open_count == 0) { - res = dev_open(local->mdev); - WARN_ON(res); - if (res) - goto err_del_interface; - tasklet_enable(&local->tx_pending_tasklet); - tasklet_enable(&local->tasklet); - } - /* * set_multicast_list will be invoked by the networking core * which will check whether any increments here were done in @@ -279,9 +305,11 @@ static int ieee80211_open(struct net_device *dev) if (sdata->flags & IEEE80211_SDATA_PROMISC) atomic_inc(&local->iff_promiscs); + hw_reconf_flags |= __ieee80211_recalc_idle(local); + local->open_count++; - if (need_hw_reconfig) { - ieee80211_hw_config(local); + if (hw_reconf_flags) { + ieee80211_hw_config(local, hw_reconf_flags); /* * set default queue parameters so drivers don't * need to initialise the hardware if the hardware @@ -290,26 +318,25 @@ static int ieee80211_open(struct net_device *dev) ieee80211_set_wmm_default(sdata); } + ieee80211_recalc_ps(local, -1); + /* * ieee80211_sta_work is disabled while network interface * is down. Therefore, some configuration changes may not * yet be effective. Trigger execution of ieee80211_sta_work * to fix this. */ - if (sdata->vif.type == NL80211_IFTYPE_STATION || - sdata->vif.type == NL80211_IFTYPE_ADHOC) { - struct ieee80211_if_sta *ifsta = &sdata->u.sta; - queue_work(local->hw.workqueue, &ifsta->work); - } + if (sdata->vif.type == NL80211_IFTYPE_STATION) + ieee80211_queue_work(&local->hw, &sdata->u.mgd.work); netif_tx_start_all_queues(dev); return 0; err_del_interface: - local->ops->remove_interface(local_to_hw(local), &conf); + drv_remove_interface(local, &sdata->vif); err_stop: - if (!local->open_count && local->ops->stop) - local->ops->stop(local_to_hw(local)); + if (!local->open_count) + drv_stop(local); err_del_bss: sdata->bss = NULL; if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) @@ -321,8 +348,11 @@ static int ieee80211_stop(struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; - struct ieee80211_if_init_conf conf; struct sta_info *sta; + unsigned long flags; + struct sk_buff *skb, *tmp; + u32 hw_reconf_flags = 0; + int i; /* * Stop TX on this interface first. @@ -330,14 +360,18 @@ static int ieee80211_stop(struct net_device *dev) netif_tx_stop_all_queues(dev); /* + * Purge work for this interface. + */ + ieee80211_work_purge(sdata); + + /* * Now delete all active aggregation sessions. */ rcu_read_lock(); list_for_each_entry_rcu(sta, &local->sta_list, list) { if (sta->sdata == sdata) - ieee80211_sta_tear_down_BA_sessions(sdata, - sta->sta.addr); + ieee80211_sta_tear_down_BA_sessions(sta); } rcu_read_unlock(); @@ -373,11 +407,24 @@ static int ieee80211_stop(struct net_device *dev) if (sdata->flags & IEEE80211_SDATA_PROMISC) atomic_dec(&local->iff_promiscs); - dev_mc_unsync(local->mdev, dev); + if (sdata->vif.type == NL80211_IFTYPE_AP) + local->fif_pspoll--; + + netif_addr_lock_bh(dev); + spin_lock_bh(&local->filter_lock); + __dev_addr_unsync(&local->mc_list, &local->mc_count, + &dev->mc_list, &dev->mc_count); + spin_unlock_bh(&local->filter_lock); + netif_addr_unlock_bh(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, *tmp; + struct ieee80211_sub_if_data *vlan, *tmpsdata; struct beacon_data *old_beacon = sdata->u.ap.beacon; /* remove beacon */ @@ -386,7 +433,7 @@ static int ieee80211_stop(struct net_device *dev) kfree(old_beacon); /* down all dependent devices, that is VLANs */ - list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.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)); @@ -406,35 +453,41 @@ static int ieee80211_stop(struct net_device *dev) } local->monitors--; - if (local->monitors == 0) - local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; + if (local->monitors == 0) { + local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; + hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; + } if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) local->fif_fcsfail--; if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) local->fif_plcpfail--; - if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) + if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) { + local->fif_pspoll--; local->fif_control--; + } if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) local->fif_other_bss--; - netif_addr_lock_bh(local->mdev); ieee80211_configure_filter(local); - netif_addr_unlock_bh(local->mdev); break; case NL80211_IFTYPE_STATION: - case NL80211_IFTYPE_ADHOC: - sdata->u.sta.state = IEEE80211_STA_MLME_DISABLED; - memset(sdata->u.sta.bssid, 0, ETH_ALEN); - del_timer_sync(&sdata->u.sta.timer); + del_timer_sync(&sdata->u.mgd.chswitch_timer); + del_timer_sync(&sdata->u.mgd.timer); + del_timer_sync(&sdata->u.mgd.conn_mon_timer); + del_timer_sync(&sdata->u.mgd.bcn_mon_timer); /* - * If the timer fired while we waited for it, it will have - * requeued the work. Now the work will be running again + * If any of the timers fired while we waited for it, it will + * have queued its work. Now the work will be running again * but will not rearm the timer again because it checks * whether the interface is running, which, at this point, * it no longer is. */ - cancel_work_sync(&sdata->u.sta.work); + cancel_work_sync(&sdata->u.mgd.work); + cancel_work_sync(&sdata->u.mgd.chswitch_work); + cancel_work_sync(&sdata->u.mgd.monitor_work); + cancel_work_sync(&sdata->u.mgd.beacon_loss_work); + /* * When we get here, the interface is marked down. * Call synchronize_rcu() to wait for the RX path @@ -442,78 +495,84 @@ static int ieee80211_stop(struct net_device *dev) * frames at this very time on another CPU. */ synchronize_rcu(); - skb_queue_purge(&sdata->u.sta.skb_queue); - - sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; - kfree(sdata->u.sta.extra_ie); - sdata->u.sta.extra_ie = NULL; - sdata->u.sta.extra_ie_len = 0; + skb_queue_purge(&sdata->u.mgd.skb_queue); + /* fall through */ + case NL80211_IFTYPE_ADHOC: + if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { + del_timer_sync(&sdata->u.ibss.timer); + cancel_work_sync(&sdata->u.ibss.work); + synchronize_rcu(); + skb_queue_purge(&sdata->u.ibss.skb_queue); + } /* fall through */ case NL80211_IFTYPE_MESH_POINT: if (ieee80211_vif_is_mesh(&sdata->vif)) { - /* allmulti is always set on mesh ifaces */ + /* other_bss and allmulti are always set on mesh + * ifaces */ + local->fif_other_bss--; atomic_dec(&local->iff_allmultis); + + ieee80211_configure_filter(local); + ieee80211_stop_mesh(sdata); } /* fall through */ default: - if (local->scan_sdata == sdata) { - if (!local->ops->hw_scan) - cancel_delayed_work_sync(&local->scan_work); - /* - * The software scan can no longer run now, so we can - * clear out the scan_sdata reference. However, the - * hardware scan may still be running. The complete - * function must be prepared to handle a NULL value. - */ - local->scan_sdata = NULL; - /* - * The memory barrier guarantees that another CPU - * that is hardware-scanning will now see the fact - * that this interface is gone. - */ - smp_mb(); - /* - * If software scanning, complete the scan but since - * the scan_sdata is NULL already don't send out a - * scan event to userspace -- the scan is incomplete. - */ - if (local->sw_scanning) - ieee80211_scan_completed(&local->hw); + if (local->scan_sdata == sdata) + ieee80211_scan_cancel(local); + + /* + * Disable beaconing for AP and mesh, IBSS can't + * still be joined to a network at this point. + */ + if (sdata->vif.type == NL80211_IFTYPE_AP || + sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { + ieee80211_bss_info_change_notify(sdata, + BSS_CHANGED_BEACON_ENABLED); } - conf.vif = &sdata->vif; - conf.type = sdata->vif.type; - conf.mac_addr = dev->dev_addr; /* disable all keys for as long as this netdev is down */ ieee80211_disable_keys(sdata); - local->ops->remove_interface(local_to_hw(local), &conf); + drv_remove_interface(local, &sdata->vif); } sdata->bss = NULL; - if (local->open_count == 0) { - if (netif_running(local->mdev)) - dev_close(local->mdev); + hw_reconf_flags |= __ieee80211_recalc_idle(local); - if (local->ops->stop) - local->ops->stop(local_to_hw(local)); + ieee80211_recalc_ps(local, -1); - ieee80211_led_radio(local, 0); + if (local->open_count == 0) { + ieee80211_clear_tx_pending(local); + ieee80211_stop_device(local); - flush_workqueue(local->hw.workqueue); + /* no reconfiguring after stop! */ + hw_reconf_flags = 0; + } - tasklet_disable(&local->tx_pending_tasklet); - tasklet_disable(&local->tasklet); + /* do after stop to avoid reconfiguring when we stop anyway */ + if (hw_reconf_flags) + 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); return 0; } static void ieee80211_set_multicast_list(struct net_device *dev) { - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 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); @@ -536,23 +595,13 @@ static void ieee80211_set_multicast_list(struct net_device *dev) atomic_dec(&local->iff_promiscs); sdata->flags ^= IEEE80211_SDATA_PROMISC; } - - dev_mc_sync(local->mdev, dev); + spin_lock_bh(&local->filter_lock); + __dev_addr_sync(&local->mc_list, &local->mc_count, + &dev->mc_list, &dev->mc_count); + spin_unlock_bh(&local->filter_lock); + ieee80211_queue_work(&local->hw, &local->reconfig_filter); } -static void ieee80211_if_setup(struct net_device *dev) -{ - ether_setup(dev); - dev->hard_start_xmit = ieee80211_subif_start_xmit; - dev->wireless_handlers = &ieee80211_iw_handler_def; - dev->set_multicast_list = ieee80211_set_multicast_list; - dev->change_mtu = ieee80211_change_mtu; - dev->open = ieee80211_open; - dev->stop = ieee80211_stop; - dev->destructor = free_netdev; - /* we will validate the address ourselves in ->open */ - dev->validate_addr = NULL; -} /* * Called when the netdev is removed or, by the code below, before * the interface type changes. @@ -592,13 +641,11 @@ static void ieee80211_teardown_sdata(struct net_device *dev) if (ieee80211_vif_is_mesh(&sdata->vif)) mesh_rmc_free(sdata); break; - case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: - kfree(sdata->u.sta.extra_ie); - kfree(sdata->u.sta.assocreq_ies); - kfree(sdata->u.sta.assocresp_ies); - kfree_skb(sdata->u.sta.probe_resp); + if (WARN_ON(sdata->u.ibss.presp)) + kfree_skb(sdata->u.ibss.presp); break; + case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_WDS: case NL80211_IFTYPE_AP_VLAN: case NL80211_IFTYPE_MONITOR: @@ -613,6 +660,70 @@ static void ieee80211_teardown_sdata(struct net_device *dev) 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_multicast_list = 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; + u8 *p; + + 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)); + + if (!ieee80211_is_data_qos(hdr->frame_control)) { + skb->priority = 7; + return ieee802_1d_to_ac[skb->priority]; + } + + p = ieee80211_get_qos_ctl(hdr); + skb->priority = *p & IEEE80211_QOS_CTL_TAG1D_MASK; + + return ieee80211_downgrade_queue(local, skb); +} + +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_multicast_list = 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->netdev_ops = &ieee80211_dataif_ops; + dev->destructor = free_netdev; +} + /* * Helper function to initialise an interface to a specific type. */ @@ -624,7 +735,8 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, /* and set some type-dependent values */ sdata->vif.type = type; - sdata->dev->hard_start_xmit = ieee80211_subif_start_xmit; + sdata->dev->netdev_ops = &ieee80211_dataif_ops; + sdata->wdev.iftype = type; /* only monitor differs */ sdata->dev->type = ARPHRD_ETHER; @@ -635,16 +747,18 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, INIT_LIST_HEAD(&sdata->u.ap.vlans); break; case NL80211_IFTYPE_STATION: - case NL80211_IFTYPE_ADHOC: 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->hard_start_xmit = ieee80211_monitor_start_xmit; + sdata->dev->netdev_ops = &ieee80211_monitorif_ops; sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | MONITOR_FLAG_OTHER_BSS; break; @@ -668,13 +782,18 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, if (type == sdata->vif.type) 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; + /* * We could, here, on changes between IBSS/STA/MESH modes, * invoke an MLME function instead that disassociates etc. * and goes into the requested mode. */ - if (netif_running(sdata->dev)) + if (ieee80211_sdata_running(sdata)) return -EBUSY; /* Purge and reset type-dependent state. */ @@ -682,10 +801,12 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, ieee80211_setup_sdata(sdata, type); /* reset some values that shouldn't be kept across type changes */ - sdata->bss_conf.basic_rates = + 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; } @@ -700,10 +821,11 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, ASSERT_RTNL(); - ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size, - name, ieee80211_if_setup); + ndev = alloc_netdev_mq(sizeof(*sdata) + local->hw.vif_data_size, + name, ieee80211_if_setup, local->hw.queues); if (!ndev) return -ENOMEM; + dev_net_set(ndev, wiphy_net(local->hw.wiphy)); ndev->needed_headroom = local->tx_headroom + 4*6 /* four MAC addresses */ @@ -719,11 +841,14 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, goto fail; memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); + memcpy(ndev->perm_addr, ndev->dev_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; @@ -735,25 +860,35 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, INIT_LIST_HEAD(&sdata->key_list); - sdata->force_unicast_rateidx = -1; - sdata->max_ratectrl_rateidx = -1; + 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; - ndev->uninit = ieee80211_teardown_sdata; - if (ieee80211_vif_is_mesh(&sdata->vif) && params && params->mesh_id_len) ieee80211_sdata_set_mesh_id(sdata, params->mesh_id_len, params->mesh_id); + mutex_lock(&local->iflist_mtx); list_add_tail_rcu(&sdata->list, &local->interfaces); + mutex_unlock(&local->iflist_mtx); if (new_dev) *new_dev = ndev; @@ -769,7 +904,10 @@ 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); + synchronize_rcu(); unregister_netdevice(sdata->dev); } @@ -781,11 +919,130 @@ void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) 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); - unregister_netdevice(sdata->dev); + + unregister_netdevice_queue(sdata->dev, &unreg_list); } + mutex_unlock(&local->iflist_mtx); + unregister_netdevice_many(&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 + printk(KERN_DEBUG "%s: device no longer idle - %s\n", + wiphy_name(local->hw.wiphy), 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 + printk(KERN_DEBUG "%s: device now idle\n", + wiphy_name(local->hw.wiphy)); +#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; + + if (!list_empty(&local->work_list)) + return ieee80211_idle_off(local, "working"); + + if (local->scanning) + return ieee80211_idle_off(local, "scanning"); + + list_for_each_entry(sdata, &local->interfaces, list) { + if (!ieee80211_sdata_running(sdata)) + continue; + /* do not count disabled managed interfaces */ + if (sdata->vif.type == NL80211_IFTYPE_STATION && + !sdata->u.mgd.associated) + continue; + /* do not count unused IBSS interfaces */ + if (sdata->vif.type == NL80211_IFTYPE_ADHOC && + !sdata->u.ibss.ssid_len) + continue; + /* count everything else */ + count++; + } + + 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, sdata->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); }