diff options
Diffstat (limited to 'net/mac80211/iface.c')
-rw-r--r-- | net/mac80211/iface.c | 289 |
1 files changed, 177 insertions, 112 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index bfb57dcc153..59f8adc2aa5 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -100,6 +100,10 @@ static u32 __ieee80211_recalc_idle(struct ieee80211_local *local) sdata->vif.bss_conf.idle = true; continue; } + + if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) + continue; + /* count everything else */ sdata->vif.bss_conf.idle = false; count++; @@ -121,7 +125,8 @@ static u32 __ieee80211_recalc_idle(struct ieee80211_local *local) list_for_each_entry(sdata, &local->interfaces, list) { if (sdata->vif.type == NL80211_IFTYPE_MONITOR || - sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + sdata->vif.type == NL80211_IFTYPE_AP_VLAN || + sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) continue; if (sdata->old_idle == sdata->vif.bss_conf.idle) continue; @@ -204,6 +209,8 @@ static inline int identical_mac_addr_allowed(int type1, int type2) { return type1 == NL80211_IFTYPE_MONITOR || type2 == NL80211_IFTYPE_MONITOR || + type1 == NL80211_IFTYPE_P2P_DEVICE || + type2 == NL80211_IFTYPE_P2P_DEVICE || (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || (type1 == NL80211_IFTYPE_WDS && (type2 == NL80211_IFTYPE_WDS || @@ -406,9 +413,10 @@ static void ieee80211_del_virtual_monitor(struct ieee80211_local *local) * 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) +int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) { - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + struct net_device *dev = wdev->netdev; struct ieee80211_local *local = sdata->local; struct sta_info *sta; u32 changed = 0; @@ -443,6 +451,7 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up) case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_MONITOR: case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_P2P_DEVICE: /* no special treatment */ break; case NL80211_IFTYPE_UNSPECIFIED: @@ -471,7 +480,7 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up) * 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)) { + if (dev && is_zero_ether_addr(dev->dev_addr)) { memcpy(dev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); @@ -536,15 +545,23 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up) local->fif_probe_req++; } - changed |= ieee80211_reset_erp_info(sdata); + if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) + 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 || - sdata->vif.type == NL80211_IFTYPE_AP) + switch (sdata->vif.type) { + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_MESH_POINT: netif_carrier_off(dev); - else + break; + case NL80211_IFTYPE_WDS: + case NL80211_IFTYPE_P2P_DEVICE: + break; + default: netif_carrier_on(dev); + } /* * set default queue parameters so drivers don't @@ -576,6 +593,9 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up) } rate_control_rate_init(sta); + netif_carrier_on(dev); + } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { + rcu_assign_pointer(local->p2p_sdata, sdata); } /* @@ -601,7 +621,8 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up) ieee80211_recalc_ps(local, -1); - netif_tx_start_all_queues(dev); + if (dev) + netif_tx_start_all_queues(dev); return 0; err_del_interface: @@ -631,7 +652,7 @@ static int ieee80211_open(struct net_device *dev) if (err) return err; - return ieee80211_do_open(dev, true); + return ieee80211_do_open(&sdata->wdev, true); } static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, @@ -652,7 +673,8 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, /* * Stop TX on this interface first. */ - netif_tx_stop_all_queues(sdata->dev); + if (sdata->dev) + netif_tx_stop_all_queues(sdata->dev); ieee80211_roc_purge(sdata); @@ -691,14 +713,16 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, 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); + if (sdata->dev) { + 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); + ieee80211_configure_filter(local); + } del_timer_sync(&local->dynamic_ps_timer); cancel_work_sync(&local->dynamic_ps_enable_work); @@ -708,7 +732,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, struct ieee80211_sub_if_data *vlan, *tmpsdata; struct beacon_data *old_beacon = rtnl_dereference(sdata->u.ap.beacon); - struct sk_buff *old_probe_resp = + struct probe_resp *old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp); /* sdata_running will return false, so this will disable */ @@ -720,7 +744,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); synchronize_rcu(); kfree(old_beacon); - kfree_skb(old_probe_resp); + kfree(old_probe_resp); /* down all dependent devices, that is VLANs */ list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, @@ -759,6 +783,10 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, ieee80211_adjust_monitor_flags(sdata, -1); ieee80211_configure_filter(local); break; + case NL80211_IFTYPE_P2P_DEVICE: + /* relies on synchronize_rcu() below */ + rcu_assign_pointer(local->p2p_sdata, NULL); + /* fall through */ default: flush_work(&sdata->work); /* @@ -771,14 +799,6 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, 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? */ @@ -877,9 +897,8 @@ static void ieee80211_set_multicast_list(struct net_device *dev) * 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) +static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) { - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; int flushed; int i; @@ -900,6 +919,11 @@ static void ieee80211_teardown_sdata(struct net_device *dev) WARN_ON(flushed); } +static void ieee80211_uninit(struct net_device *dev) +{ + ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); +} + static u16 ieee80211_netdev_select_queue(struct net_device *dev, struct sk_buff *skb) { @@ -909,7 +933,7 @@ static u16 ieee80211_netdev_select_queue(struct net_device *dev, static const struct net_device_ops ieee80211_dataif_ops = { .ndo_open = ieee80211_open, .ndo_stop = ieee80211_stop, - .ndo_uninit = ieee80211_teardown_sdata, + .ndo_uninit = ieee80211_uninit, .ndo_start_xmit = ieee80211_subif_start_xmit, .ndo_set_rx_mode = ieee80211_set_multicast_list, .ndo_change_mtu = ieee80211_change_mtu, @@ -940,7 +964,7 @@ static u16 ieee80211_monitor_select_queue(struct net_device *dev, static const struct net_device_ops ieee80211_monitorif_ops = { .ndo_open = ieee80211_open, .ndo_stop = ieee80211_stop, - .ndo_uninit = ieee80211_teardown_sdata, + .ndo_uninit = ieee80211_uninit, .ndo_start_xmit = ieee80211_monitor_start_xmit, .ndo_set_rx_mode = ieee80211_set_multicast_list, .ndo_change_mtu = ieee80211_change_mtu, @@ -1099,7 +1123,6 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, /* 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); @@ -1107,8 +1130,11 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, sdata->noack_map = 0; - /* only monitor differs */ - sdata->dev->type = ARPHRD_ETHER; + /* only monitor/p2p-device differ */ + if (sdata->dev) { + sdata->dev->netdev_ops = &ieee80211_dataif_ops; + sdata->dev->type = ARPHRD_ETHER; + } skb_queue_head_init(&sdata->skb_queue); INIT_WORK(&sdata->work, ieee80211_iface_work); @@ -1146,6 +1172,7 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, break; case NL80211_IFTYPE_WDS: case NL80211_IFTYPE_AP_VLAN: + case NL80211_IFTYPE_P2P_DEVICE: break; case NL80211_IFTYPE_UNSPECIFIED: case NUM_NL80211_IFTYPES: @@ -1156,18 +1183,6 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, ieee80211_debugfs_add_netdev(sdata); } -static void ieee80211_clean_sdata(struct ieee80211_sub_if_data *sdata) -{ - switch (sdata->vif.type) { - case NL80211_IFTYPE_MESH_POINT: - mesh_path_flush_by_iface(sdata); - break; - - default: - break; - } -} - static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, enum nl80211_iftype type) { @@ -1225,7 +1240,7 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, ieee80211_do_stop(sdata, false); - ieee80211_teardown_sdata(sdata->dev); + ieee80211_teardown_sdata(sdata); ret = drv_change_interface(local, sdata, internal_type, p2p); if (ret) @@ -1240,7 +1255,7 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, ieee80211_setup_sdata(sdata, type); - err = ieee80211_do_open(sdata->dev, false); + err = ieee80211_do_open(&sdata->wdev, false); WARN(err, "type change: do_open returned %d", err); return ret; @@ -1267,14 +1282,14 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, return ret; } else { /* Purge and reset type-dependent state. */ - ieee80211_teardown_sdata(sdata->dev); + ieee80211_teardown_sdata(sdata); 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->local->oper_channel->band); sdata->drop_unencrypted = 0; if (type == NL80211_IFTYPE_STATION) sdata->u.mgd.use_4addr = false; @@ -1283,8 +1298,7 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, } static void ieee80211_assign_perm_addr(struct ieee80211_local *local, - struct net_device *dev, - enum nl80211_iftype type) + u8 *perm_addr, enum nl80211_iftype type) { struct ieee80211_sub_if_data *sdata; u64 mask, start, addr, val, inc; @@ -1293,13 +1307,12 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local, int i; /* default ... something at least */ - memcpy(dev->perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); + memcpy(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) { @@ -1312,11 +1325,24 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local, 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); + memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); break; } /* keep default if no AP interface present */ break; + case NL80211_IFTYPE_P2P_CLIENT: + case NL80211_IFTYPE_P2P_GO: + if (local->hw.flags & IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF) { + list_for_each_entry(sdata, &local->interfaces, list) { + if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) + continue; + if (!ieee80211_sdata_running(sdata)) + continue; + memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); + goto out_unlock; + } + } + /* otherwise fall through */ default: /* assign a new address if possible -- try n_addresses first */ for (i = 0; i < local->hw.wiphy->n_addresses; i++) { @@ -1331,7 +1357,7 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local, } if (!used) { - memcpy(dev->perm_addr, + memcpy(perm_addr, local->hw.wiphy->addresses[i].addr, ETH_ALEN); break; @@ -1382,7 +1408,7 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local, } if (!used) { - memcpy(dev->perm_addr, tmp_addr, ETH_ALEN); + memcpy(perm_addr, tmp_addr, ETH_ALEN); break; } addr = (start & ~mask) | (val & mask); @@ -1391,6 +1417,7 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local, break; } + out_unlock: mutex_unlock(&local->iflist_mtx); } @@ -1398,49 +1425,68 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, struct wireless_dev **new_wdev, enum nl80211_iftype type, struct vif_params *params) { - struct net_device *ndev; + struct net_device *ndev = NULL; struct ieee80211_sub_if_data *sdata = NULL; int ret, i; int txqs = 1; ASSERT_RTNL(); - if (local->hw.queues >= IEEE80211_NUM_ACS) - txqs = IEEE80211_NUM_ACS; - - ndev = alloc_netdev_mqs(sizeof(*sdata) + local->hw.vif_data_size, - name, ieee80211_if_setup, txqs, 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); + if (type == NL80211_IFTYPE_P2P_DEVICE) { + struct wireless_dev *wdev; + + sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, + GFP_KERNEL); + if (!sdata) + return -ENOMEM; + wdev = &sdata->wdev; + + sdata->dev = NULL; + strlcpy(sdata->name, name, IFNAMSIZ); + ieee80211_assign_perm_addr(local, wdev->address, type); + memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); + } else { + if (local->hw.queues >= IEEE80211_NUM_ACS) + txqs = IEEE80211_NUM_ACS; + + ndev = alloc_netdev_mqs(sizeof(*sdata) + + local->hw.vif_data_size, + name, ieee80211_if_setup, txqs, 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) { + free_netdev(ndev); + return ret; + } + + ieee80211_assign_perm_addr(local, ndev->perm_addr, 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 -- 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); + + sdata->dev = ndev; + } /* 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 @@ -1469,17 +1515,21 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, /* 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; - } + if (ndev) { + if (params) { + ndev->ieee80211_ptr->use_4addr = params->use_4addr; + if (type == NL80211_IFTYPE_STATION) + sdata->u.mgd.use_4addr = params->use_4addr; + } - ndev->features |= local->hw.netdev_features; + ndev->features |= local->hw.netdev_features; - ret = register_netdevice(ndev); - if (ret) - goto fail; + ret = register_netdevice(ndev); + if (ret) { + free_netdev(ndev); + return ret; + } + } mutex_lock(&local->iflist_mtx); list_add_tail_rcu(&sdata->list, &local->interfaces); @@ -1489,10 +1539,6 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, *new_wdev = &sdata->wdev; return 0; - - fail: - free_netdev(ndev); - return ret; } void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) @@ -1503,11 +1549,22 @@ void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) list_del_rcu(&sdata->list); mutex_unlock(&sdata->local->iflist_mtx); - /* clean up type-dependent data */ - ieee80211_clean_sdata(sdata); - synchronize_rcu(); - unregister_netdevice(sdata->dev); + + if (sdata->dev) { + unregister_netdevice(sdata->dev); + } else { + cfg80211_unregister_wdev(&sdata->wdev); + kfree(sdata); + } +} + +void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) +{ + if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) + return; + ieee80211_do_stop(sdata, true); + ieee80211_teardown_sdata(sdata); } /* @@ -1518,6 +1575,7 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local) { struct ieee80211_sub_if_data *sdata, *tmp; LIST_HEAD(unreg_list); + LIST_HEAD(wdev_list); ASSERT_RTNL(); @@ -1525,13 +1583,20 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local) list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { list_del(&sdata->list); - ieee80211_clean_sdata(sdata); - - unregister_netdevice_queue(sdata->dev, &unreg_list); + if (sdata->dev) + unregister_netdevice_queue(sdata->dev, &unreg_list); + else + list_add(&sdata->list, &wdev_list); } mutex_unlock(&local->iflist_mtx); unregister_netdevice_many(&unreg_list); list_del(&unreg_list); + + list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { + list_del(&sdata->list); + cfg80211_unregister_wdev(&sdata->wdev); + kfree(sdata); + } } static int netdev_notify(struct notifier_block *nb, |