| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright 2002-2005, Instant802 Networks, Inc. |
| * Copyright 2005-2006, Devicescape Software, Inc. |
| * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> |
| * Copyright 2013-2014 Intel Mobile Communications GmbH |
| * Copyright (C) 2017 Intel Deutschland GmbH |
| * Copyright (C) 2018-2022 Intel Corporation |
| */ |
| |
| #include <net/mac80211.h> |
| #include <linux/module.h> |
| #include <linux/fips.h> |
| #include <linux/init.h> |
| #include <linux/netdevice.h> |
| #include <linux/types.h> |
| #include <linux/slab.h> |
| #include <linux/skbuff.h> |
| #include <linux/etherdevice.h> |
| #include <linux/if_arp.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/bitmap.h> |
| #include <linux/inetdevice.h> |
| #include <net/net_namespace.h> |
| #include <net/cfg80211.h> |
| #include <net/addrconf.h> |
| |
| #include "ieee80211_i.h" |
| #include "driver-ops.h" |
| #include "rate.h" |
| #include "mesh.h" |
| #include "wep.h" |
| #include "led.h" |
| #include "debugfs.h" |
| |
| void ieee80211_configure_filter(struct ieee80211_local *local) |
| { |
| u64 mc; |
| unsigned int changed_flags; |
| unsigned int new_flags = 0; |
| |
| if (atomic_read(&local->iff_allmultis)) |
| new_flags |= FIF_ALLMULTI; |
| |
| if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) || |
| test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning)) |
| new_flags |= FIF_BCN_PRBRESP_PROMISC; |
| |
| if (local->fif_probe_req || local->probe_req_reg) |
| new_flags |= FIF_PROBE_REQ; |
| |
| if (local->fif_fcsfail) |
| new_flags |= FIF_FCSFAIL; |
| |
| if (local->fif_plcpfail) |
| new_flags |= FIF_PLCPFAIL; |
| |
| if (local->fif_control) |
| new_flags |= FIF_CONTROL; |
| |
| if (local->fif_other_bss) |
| new_flags |= FIF_OTHER_BSS; |
| |
| if (local->fif_pspoll) |
| new_flags |= FIF_PSPOLL; |
| |
| if (local->rx_mcast_action_reg) |
| new_flags |= FIF_MCAST_ACTION; |
| |
| spin_lock_bh(&local->filter_lock); |
| changed_flags = local->filter_flags ^ new_flags; |
| |
| mc = drv_prepare_multicast(local, &local->mc_list); |
| spin_unlock_bh(&local->filter_lock); |
| |
| /* be a bit nasty */ |
| new_flags |= (1<<31); |
| |
| drv_configure_filter(local, changed_flags, &new_flags, mc); |
| |
| WARN_ON(new_flags & (1<<31)); |
| |
| local->filter_flags = new_flags & ~(1<<31); |
| } |
| |
| static void ieee80211_reconfig_filter(struct work_struct *work) |
| { |
| struct ieee80211_local *local = |
| container_of(work, struct ieee80211_local, reconfig_filter); |
| |
| ieee80211_configure_filter(local); |
| } |
| |
| static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local) |
| { |
| struct ieee80211_sub_if_data *sdata; |
| struct cfg80211_chan_def chandef = {}; |
| u32 changed = 0; |
| int power; |
| u32 offchannel_flag; |
| |
| offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
| |
| if (local->scan_chandef.chan) { |
| chandef = local->scan_chandef; |
| } else if (local->tmp_channel) { |
| chandef.chan = local->tmp_channel; |
| chandef.width = NL80211_CHAN_WIDTH_20_NOHT; |
| chandef.center_freq1 = chandef.chan->center_freq; |
| chandef.freq1_offset = chandef.chan->freq_offset; |
| } else |
| chandef = local->_oper_chandef; |
| |
| WARN(!cfg80211_chandef_valid(&chandef), |
| "control:%d.%03d MHz width:%d center: %d.%03d/%d MHz", |
| chandef.chan->center_freq, chandef.chan->freq_offset, |
| chandef.width, chandef.center_freq1, chandef.freq1_offset, |
| chandef.center_freq2); |
| |
| if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef)) |
| local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; |
| else |
| local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; |
| |
| offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
| |
| if (offchannel_flag || |
| !cfg80211_chandef_identical(&local->hw.conf.chandef, |
| &local->_oper_chandef)) { |
| local->hw.conf.chandef = chandef; |
| changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
| } |
| |
| if (!conf_is_ht(&local->hw.conf)) { |
| /* |
| * mac80211.h documents that this is only valid |
| * when the channel is set to an HT type, and |
| * that otherwise STATIC is used. |
| */ |
| local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; |
| } else if (local->hw.conf.smps_mode != local->smps_mode) { |
| local->hw.conf.smps_mode = local->smps_mode; |
| changed |= IEEE80211_CONF_CHANGE_SMPS; |
| } |
| |
| power = ieee80211_chandef_max_power(&chandef); |
| |
| rcu_read_lock(); |
| list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
| if (!rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf)) |
| continue; |
| if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
| continue; |
| if (sdata->vif.bss_conf.txpower == INT_MIN) |
| continue; |
| power = min(power, sdata->vif.bss_conf.txpower); |
| } |
| rcu_read_unlock(); |
| |
| if (local->hw.conf.power_level != power) { |
| changed |= IEEE80211_CONF_CHANGE_POWER; |
| local->hw.conf.power_level = power; |
| } |
| |
| return changed; |
| } |
| |
| int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
| { |
| int ret = 0; |
| |
| might_sleep(); |
| |
| if (!local->use_chanctx) |
| changed |= ieee80211_hw_conf_chan(local); |
| else |
| changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL | |
| IEEE80211_CONF_CHANGE_POWER | |
| IEEE80211_CONF_CHANGE_SMPS); |
| |
| if (changed && local->open_count) { |
| ret = drv_config(local, changed); |
| /* |
| * Goal: |
| * HW reconfiguration should never fail, the driver has told |
| * us what it can support so it should live up to that promise. |
| * |
| * Current status: |
| * rfkill is not integrated with mac80211 and a |
| * configuration command can thus fail if hardware rfkill |
| * is enabled |
| * |
| * FIXME: integrate rfkill with mac80211 and then add this |
| * WARN_ON() back |
| * |
| */ |
| /* WARN_ON(ret); */ |
| } |
| |
| return ret; |
| } |
| |
| #define BSS_CHANGED_VIF_CFG_FLAGS (BSS_CHANGED_ASSOC |\ |
| BSS_CHANGED_IDLE |\ |
| BSS_CHANGED_PS |\ |
| BSS_CHANGED_IBSS |\ |
| BSS_CHANGED_ARP_FILTER |\ |
| BSS_CHANGED_SSID) |
| |
| void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
| u64 changed) |
| { |
| struct ieee80211_local *local = sdata->local; |
| |
| might_sleep(); |
| |
| if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
| return; |
| |
| if (WARN_ON_ONCE(changed & (BSS_CHANGED_BEACON | |
| BSS_CHANGED_BEACON_ENABLED) && |
| sdata->vif.type != NL80211_IFTYPE_AP && |
| sdata->vif.type != NL80211_IFTYPE_ADHOC && |
| sdata->vif.type != NL80211_IFTYPE_MESH_POINT && |
| sdata->vif.type != NL80211_IFTYPE_OCB)) |
| return; |
| |
| if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE || |
| sdata->vif.type == NL80211_IFTYPE_NAN || |
| (sdata->vif.type == NL80211_IFTYPE_MONITOR && |
| !sdata->vif.bss_conf.mu_mimo_owner && |
| !(changed & BSS_CHANGED_TXPOWER)))) |
| return; |
| |
| if (!check_sdata_in_driver(sdata)) |
| return; |
| |
| if (changed & BSS_CHANGED_VIF_CFG_FLAGS) { |
| u64 ch = changed & BSS_CHANGED_VIF_CFG_FLAGS; |
| |
| trace_drv_vif_cfg_changed(local, sdata, changed); |
| if (local->ops->vif_cfg_changed) |
| local->ops->vif_cfg_changed(&local->hw, &sdata->vif, ch); |
| } |
| |
| if (changed & ~BSS_CHANGED_VIF_CFG_FLAGS) { |
| u64 ch = changed & ~BSS_CHANGED_VIF_CFG_FLAGS; |
| |
| /* FIXME: should be for each link */ |
| trace_drv_link_info_changed(local, sdata, &sdata->vif.bss_conf, |
| changed); |
| if (local->ops->link_info_changed) |
| local->ops->link_info_changed(&local->hw, &sdata->vif, |
| &sdata->vif.bss_conf, ch); |
| } |
| |
| if (local->ops->bss_info_changed) |
| local->ops->bss_info_changed(&local->hw, &sdata->vif, |
| &sdata->vif.bss_conf, changed); |
| trace_drv_return_void(local); |
| } |
| |
| void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata, |
| u64 changed) |
| { |
| struct ieee80211_local *local = sdata->local; |
| |
| WARN_ON_ONCE(changed & ~BSS_CHANGED_VIF_CFG_FLAGS); |
| |
| if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
| return; |
| |
| drv_vif_cfg_changed(local, sdata, changed); |
| } |
| |
| void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, |
| struct ieee80211_link_data *link, |
| u64 changed) |
| { |
| struct ieee80211_local *local = sdata->local; |
| |
| WARN_ON_ONCE(changed & BSS_CHANGED_VIF_CFG_FLAGS); |
| |
| if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
| return; |
| |
| if (!check_sdata_in_driver(sdata)) |
| return; |
| |
| drv_link_info_changed(local, sdata, link->conf, link->link_id, changed); |
| } |
| |
| u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
| { |
| sdata->vif.bss_conf.use_cts_prot = false; |
| sdata->vif.bss_conf.use_short_preamble = false; |
| sdata->vif.bss_conf.use_short_slot = false; |
| return BSS_CHANGED_ERP_CTS_PROT | |
| BSS_CHANGED_ERP_PREAMBLE | |
| BSS_CHANGED_ERP_SLOT; |
| } |
| |
| static void ieee80211_tasklet_handler(struct tasklet_struct *t) |
| { |
| struct ieee80211_local *local = from_tasklet(local, t, tasklet); |
| struct sk_buff *skb; |
| |
| while ((skb = skb_dequeue(&local->skb_queue)) || |
| (skb = skb_dequeue(&local->skb_queue_unreliable))) { |
| switch (skb->pkt_type) { |
| case IEEE80211_RX_MSG: |
| /* Clear skb->pkt_type in order to not confuse kernel |
| * netstack. */ |
| skb->pkt_type = 0; |
| ieee80211_rx(&local->hw, skb); |
| break; |
| case IEEE80211_TX_STATUS_MSG: |
| skb->pkt_type = 0; |
| ieee80211_tx_status(&local->hw, skb); |
| break; |
| default: |
| WARN(1, "mac80211: Packet is of unknown type %d\n", |
| skb->pkt_type); |
| dev_kfree_skb(skb); |
| break; |
| } |
| } |
| } |
| |
| static void ieee80211_restart_work(struct work_struct *work) |
| { |
| struct ieee80211_local *local = |
| container_of(work, struct ieee80211_local, restart_work); |
| struct ieee80211_sub_if_data *sdata; |
| int ret; |
| |
| /* wait for scan work complete */ |
| flush_workqueue(local->workqueue); |
| flush_work(&local->sched_scan_stopped_work); |
| flush_work(&local->radar_detected_work); |
| |
| rtnl_lock(); |
| /* we might do interface manipulations, so need both */ |
| wiphy_lock(local->hw.wiphy); |
| |
| WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), |
| "%s called with hardware scan in progress\n", __func__); |
| |
| list_for_each_entry(sdata, &local->interfaces, list) { |
| /* |
| * XXX: there may be more work for other vif types and even |
| * for station mode: a good thing would be to run most of |
| * the iface type's dependent _stop (ieee80211_mg_stop, |
| * ieee80211_ibss_stop) etc... |
| * For now, fix only the specific bug that was seen: race |
| * between csa_connection_drop_work and us. |
| */ |
| if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
| /* |
| * This worker is scheduled from the iface worker that |
| * runs on mac80211's workqueue, so we can't be |
| * scheduling this worker after the cancel right here. |
| * The exception is ieee80211_chswitch_done. |
| * Then we can have a race... |
| */ |
| cancel_work_sync(&sdata->u.mgd.csa_connection_drop_work); |
| if (sdata->vif.bss_conf.csa_active) { |
| sdata_lock(sdata); |
| ieee80211_sta_connection_lost(sdata, |
| WLAN_REASON_UNSPECIFIED, |
| false); |
| sdata_unlock(sdata); |
| } |
| } |
| flush_delayed_work(&sdata->dec_tailroom_needed_wk); |
| } |
| ieee80211_scan_cancel(local); |
| |
| /* make sure any new ROC will consider local->in_reconfig */ |
| flush_delayed_work(&local->roc_work); |
| flush_work(&local->hw_roc_done); |
| |
| /* wait for all packet processing to be done */ |
| synchronize_net(); |
| |
| ret = ieee80211_reconfig(local); |
| wiphy_unlock(local->hw.wiphy); |
| |
| if (ret) |
| cfg80211_shutdown_all_interfaces(local->hw.wiphy); |
| |
| rtnl_unlock(); |
| } |
| |
| void ieee80211_restart_hw(struct ieee80211_hw *hw) |
| { |
| struct ieee80211_local *local = hw_to_local(hw); |
| |
| trace_api_restart_hw(local); |
| |
| wiphy_info(hw->wiphy, |
| "Hardware restart was requested\n"); |
| |
| /* use this reason, ieee80211_reconfig will unblock it */ |
| ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
| IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
| false); |
| |
| /* |
| * Stop all Rx during the reconfig. We don't want state changes |
| * or driver callbacks while this is in progress. |
| */ |
| local->in_reconfig = true; |
| barrier(); |
| |
| queue_work(system_freezable_wq, &local->restart_work); |
| } |
| EXPORT_SYMBOL(ieee80211_restart_hw); |
| |
| #ifdef CONFIG_INET |
| static int ieee80211_ifa_changed(struct notifier_block *nb, |
| unsigned long data, void *arg) |
| { |
| struct in_ifaddr *ifa = arg; |
| struct ieee80211_local *local = |
| container_of(nb, struct ieee80211_local, |
| ifa_notifier); |
| struct net_device *ndev = ifa->ifa_dev->dev; |
| struct wireless_dev *wdev = ndev->ieee80211_ptr; |
| struct in_device *idev; |
| struct ieee80211_sub_if_data *sdata; |
| struct ieee80211_vif_cfg *vif_cfg; |
| struct ieee80211_if_managed *ifmgd; |
| int c = 0; |
| |
| /* Make sure it's our interface that got changed */ |
| if (!wdev) |
| return NOTIFY_DONE; |
| |
| if (wdev->wiphy != local->hw.wiphy) |
| return NOTIFY_DONE; |
| |
| sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
| vif_cfg = &sdata->vif.cfg; |
| |
| /* ARP filtering is only supported in managed mode */ |
| if (sdata->vif.type != NL80211_IFTYPE_STATION) |
| return NOTIFY_DONE; |
| |
| idev = __in_dev_get_rtnl(sdata->dev); |
| if (!idev) |
| return NOTIFY_DONE; |
| |
| ifmgd = &sdata->u.mgd; |
| sdata_lock(sdata); |
| |
| /* Copy the addresses to the vif config list */ |
| ifa = rtnl_dereference(idev->ifa_list); |
| while (ifa) { |
| if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN) |
| vif_cfg->arp_addr_list[c] = ifa->ifa_address; |
| ifa = rtnl_dereference(ifa->ifa_next); |
| c++; |
| } |
| |
| vif_cfg->arp_addr_cnt = c; |
| |
| /* Configure driver only if associated (which also implies it is up) */ |
| if (ifmgd->associated) |
| ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_ARP_FILTER); |
| |
| sdata_unlock(sdata); |
| |
| return NOTIFY_OK; |
| } |
| #endif |
| |
| #if IS_ENABLED(CONFIG_IPV6) |
| static int ieee80211_ifa6_changed(struct notifier_block *nb, |
| unsigned long data, void *arg) |
| { |
| struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg; |
| struct inet6_dev *idev = ifa->idev; |
| struct net_device *ndev = ifa->idev->dev; |
| struct ieee80211_local *local = |
| container_of(nb, struct ieee80211_local, ifa6_notifier); |
| struct wireless_dev *wdev = ndev->ieee80211_ptr; |
| struct ieee80211_sub_if_data *sdata; |
| |
| /* Make sure it's our interface that got changed */ |
| if (!wdev || wdev->wiphy != local->hw.wiphy) |
| return NOTIFY_DONE; |
| |
| sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
| |
| /* |
| * For now only support station mode. This is mostly because |
| * doing AP would have to handle AP_VLAN in some way ... |
| */ |
| if (sdata->vif.type != NL80211_IFTYPE_STATION) |
| return NOTIFY_DONE; |
| |
| drv_ipv6_addr_change(local, sdata, idev); |
| |
| return NOTIFY_OK; |
| } |
| #endif |
| |
| /* There isn't a lot of sense in it, but you can transmit anything you like */ |
| static const struct ieee80211_txrx_stypes |
| ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { |
| [NL80211_IFTYPE_ADHOC] = { |
| .tx = 0xffff, |
| .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
| BIT(IEEE80211_STYPE_AUTH >> 4) | |
| BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
| BIT(IEEE80211_STYPE_PROBE_REQ >> 4), |
| }, |
| [NL80211_IFTYPE_STATION] = { |
| .tx = 0xffff, |
| /* |
| * To support Pre Association Security Negotiation (PASN) while |
| * already associated to one AP, allow user space to register to |
| * Rx authentication frames, so that the user space logic would |
| * be able to receive/handle authentication frames from a |
| * different AP as part of PASN. |
| * It is expected that user space would intelligently register |
| * for Rx authentication frames, i.e., only when PASN is used |
| * and configure a match filter only for PASN authentication |
| * algorithm, as otherwise the MLME functionality of mac80211 |
| * would be broken. |
| */ |
| .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
| BIT(IEEE80211_STYPE_AUTH >> 4) | |
| BIT(IEEE80211_STYPE_PROBE_REQ >> 4), |
| }, |
| [NL80211_IFTYPE_AP] = { |
| .tx = 0xffff, |
| .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | |
| BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | |
| BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | |
| BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
| BIT(IEEE80211_STYPE_AUTH >> 4) | |
| BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
| BIT(IEEE80211_STYPE_ACTION >> 4), |
| }, |
| [NL80211_IFTYPE_AP_VLAN] = { |
| /* copy AP */ |
| .tx = 0xffff, |
| .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | |
| BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | |
| BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | |
| BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
| BIT(IEEE80211_STYPE_AUTH >> 4) | |
| BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
| BIT(IEEE80211_STYPE_ACTION >> 4), |
| }, |
| [NL80211_IFTYPE_P2P_CLIENT] = { |
| .tx = 0xffff, |
| .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
| BIT(IEEE80211_STYPE_PROBE_REQ >> 4), |
| }, |
| [NL80211_IFTYPE_P2P_GO] = { |
| .tx = 0xffff, |
| .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | |
| BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | |
| BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | |
| BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
| BIT(IEEE80211_STYPE_AUTH >> 4) | |
| BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
| BIT(IEEE80211_STYPE_ACTION >> 4), |
| }, |
| [NL80211_IFTYPE_MESH_POINT] = { |
| .tx = 0xffff, |
| .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
| BIT(IEEE80211_STYPE_AUTH >> 4) | |
| BIT(IEEE80211_STYPE_DEAUTH >> 4), |
| }, |
| [NL80211_IFTYPE_P2P_DEVICE] = { |
| .tx = 0xffff, |
| .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
| BIT(IEEE80211_STYPE_PROBE_REQ >> 4), |
| }, |
| }; |
| |
| static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { |
| .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | |
| IEEE80211_HT_AMPDU_PARM_DENSITY, |
| |
| .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
| IEEE80211_HT_CAP_MAX_AMSDU | |
| IEEE80211_HT_CAP_SGI_20 | |
| IEEE80211_HT_CAP_SGI_40 | |
| IEEE80211_HT_CAP_TX_STBC | |
| IEEE80211_HT_CAP_RX_STBC | |
| IEEE80211_HT_CAP_LDPC_CODING | |
| IEEE80211_HT_CAP_40MHZ_INTOLERANT), |
| .mcs = { |
| .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, }, |
| }, |
| }; |
| |
| static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = { |
| .vht_cap_info = |
| cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC | |
| IEEE80211_VHT_CAP_SHORT_GI_80 | |
| IEEE80211_VHT_CAP_SHORT_GI_160 | |
| IEEE80211_VHT_CAP_RXSTBC_MASK | |
| IEEE80211_VHT_CAP_TXSTBC | |
| IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | |
| IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | |
| IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN | |
| IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | |
| IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK), |
| .supp_mcs = { |
| .rx_mcs_map = cpu_to_le16(~0), |
| .tx_mcs_map = cpu_to_le16(~0), |
| }, |
| }; |
| |
| struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len, |
| const struct ieee80211_ops *ops, |
| const char *requested_name) |
| { |
| struct ieee80211_local *local; |
| int priv_size, i; |
| struct wiphy *wiphy; |
| bool use_chanctx; |
| |
| if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config || |
| !ops->add_interface || !ops->remove_interface || |
| !ops->configure_filter || !ops->wake_tx_queue)) |
| return NULL; |
| |
| if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) |
| return NULL; |
| |
| if (WARN_ON(!!ops->link_info_changed != !!ops->vif_cfg_changed || |
| (ops->link_info_changed && ops->bss_info_changed))) |
| return NULL; |
| |
| /* check all or no channel context operations exist */ |
| i = !!ops->add_chanctx + !!ops->remove_chanctx + |
| !!ops->change_chanctx + !!ops->assign_vif_chanctx + |
| !!ops->unassign_vif_chanctx; |
| if (WARN_ON(i != 0 && i != 5)) |
| return NULL; |
| use_chanctx = i == 5; |
| |
| /* Ensure 32-byte alignment of our private data and hw private data. |
| * We use the wiphy priv data for both our ieee80211_local and for |
| * the driver's private data |
| * |
| * In memory it'll be like this: |
| * |
| * +-------------------------+ |
| * | struct wiphy | |
| * +-------------------------+ |
| * | struct ieee80211_local | |
| * +-------------------------+ |
| * | driver's private data | |
| * +-------------------------+ |
| * |
| */ |
| priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
| |
| wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name); |
| |
| if (!wiphy) |
| return NULL; |
| |
| wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; |
| |
| wiphy->privid = mac80211_wiphy_privid; |
| |
| wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
| WIPHY_FLAG_4ADDR_AP | |
| WIPHY_FLAG_4ADDR_STATION | |
| WIPHY_FLAG_REPORTS_OBSS | |
| WIPHY_FLAG_OFFCHAN_TX; |
| |
| if (!use_chanctx || ops->remain_on_channel) |
| wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; |
| |
| wiphy->features |= NL80211_FEATURE_SK_TX_STATUS | |
| NL80211_FEATURE_SAE | |
| NL80211_FEATURE_HT_IBSS | |
| NL80211_FEATURE_VIF_TXPOWER | |
| NL80211_FEATURE_MAC_ON_CREATE | |
| NL80211_FEATURE_USERSPACE_MPM | |
| NL80211_FEATURE_FULL_AP_CLIENT_STATE; |
| wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_STA); |
| wiphy_ext_feature_set(wiphy, |
| NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211); |
| wiphy_ext_feature_set(wiphy, |
| NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH); |
| wiphy_ext_feature_set(wiphy, |
| NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_TX_STATUS); |
| wiphy_ext_feature_set(wiphy, |
| NL80211_EXT_FEATURE_SCAN_FREQ_KHZ); |
| wiphy_ext_feature_set(wiphy, |
| NL80211_EXT_FEATURE_POWERED_ADDR_CHANGE); |
| |
| if (!ops->hw_scan) { |
| wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN | |
| NL80211_FEATURE_AP_SCAN; |
| /* |
| * if the driver behaves correctly using the probe request |
| * (template) from mac80211, then both of these should be |
| * supported even with hw scan - but let drivers opt in. |
| */ |
| wiphy_ext_feature_set(wiphy, |
| NL80211_EXT_FEATURE_SCAN_RANDOM_SN); |
| wiphy_ext_feature_set(wiphy, |
| NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT); |
| } |
| |
| if (!ops->set_key) |
| wiphy->flags |= WIPHY_FLAG_IBSS_RSN; |
| |
| wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_TXQS); |
| wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM); |
| |
| wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
| |
| local = wiphy_priv(wiphy); |
| |
| if (sta_info_init(local)) |
| goto err_free; |
| |
| local->hw.wiphy = wiphy; |
| |
| local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
| |
| local->ops = ops; |
| local->use_chanctx = use_chanctx; |
| |
| /* |
| * We need a bit of data queued to build aggregates properly, so |
| * instruct the TCP stack to allow more than a single ms of data |
| * to be queued in the stack. The value is a bit-shift of 1 |
| * second, so 7 is ~8ms of queued data. Only affects local TCP |
| * sockets. |
| * This is the default, anyhow - drivers may need to override it |
| * for local reasons (longer buffers, longer completion time, or |
| * similar). |
| */ |
| local->hw.tx_sk_pacing_shift = 7; |
| |
| /* set up some defaults */ |
| local->hw.queues = 1; |
| local->hw.max_rates = 1; |
| local->hw.max_report_rates = 0; |
| local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT; |
| local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT; |
| local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE; |
| local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
| local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; |
| local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
| IEEE80211_RADIOTAP_MCS_HAVE_GI | |
| IEEE80211_RADIOTAP_MCS_HAVE_BW; |
| local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI | |
| IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; |
| local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
| local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; |
| local->hw.max_mtu = IEEE80211_MAX_DATA_LEN; |
| local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; |
| wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; |
| wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask; |
| |
| local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF; |
| |
| wiphy->extended_capabilities = local->ext_capa; |
| wiphy->extended_capabilities_mask = local->ext_capa; |
| wiphy->extended_capabilities_len = |
| ARRAY_SIZE(local->ext_capa); |
| |
| INIT_LIST_HEAD(&local->interfaces); |
| INIT_LIST_HEAD(&local->mon_list); |
| |
| __hw_addr_init(&local->mc_list); |
| |
| mutex_init(&local->iflist_mtx); |
| mutex_init(&local->mtx); |
| |
| mutex_init(&local->key_mtx); |
| spin_lock_init(&local->filter_lock); |
| spin_lock_init(&local->rx_path_lock); |
| spin_lock_init(&local->queue_stop_reason_lock); |
| |
| for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
| INIT_LIST_HEAD(&local->active_txqs[i]); |
| spin_lock_init(&local->active_txq_lock[i]); |
| local->aql_txq_limit_low[i] = IEEE80211_DEFAULT_AQL_TXQ_LIMIT_L; |
| local->aql_txq_limit_high[i] = |
| IEEE80211_DEFAULT_AQL_TXQ_LIMIT_H; |
| atomic_set(&local->aql_ac_pending_airtime[i], 0); |
| } |
| |
| local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX; |
| local->aql_threshold = IEEE80211_AQL_THRESHOLD; |
| atomic_set(&local->aql_total_pending_airtime, 0); |
| |
| INIT_LIST_HEAD(&local->chanctx_list); |
| mutex_init(&local->chanctx_mtx); |
| |
| INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
| |
| INIT_WORK(&local->restart_work, ieee80211_restart_work); |
| |
| INIT_WORK(&local->radar_detected_work, |
| ieee80211_dfs_radar_detected_work); |
| |
| INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
| local->smps_mode = IEEE80211_SMPS_OFF; |
| |
| INIT_WORK(&local->dynamic_ps_enable_work, |
| ieee80211_dynamic_ps_enable_work); |
| INIT_WORK(&local->dynamic_ps_disable_work, |
| ieee80211_dynamic_ps_disable_work); |
| timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0); |
| |
| INIT_WORK(&local->sched_scan_stopped_work, |
| ieee80211_sched_scan_stopped_work); |
| |
| spin_lock_init(&local->ack_status_lock); |
| idr_init(&local->ack_status_frames); |
| |
| for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
| skb_queue_head_init(&local->pending[i]); |
| atomic_set(&local->agg_queue_stop[i], 0); |
| } |
| tasklet_setup(&local->tx_pending_tasklet, ieee80211_tx_pending); |
| tasklet_setup(&local->wake_txqs_tasklet, ieee80211_wake_txqs); |
| tasklet_setup(&local->tasklet, ieee80211_tasklet_handler); |
| |
| skb_queue_head_init(&local->skb_queue); |
| skb_queue_head_init(&local->skb_queue_unreliable); |
| |
| ieee80211_alloc_led_names(local); |
| |
| ieee80211_roc_setup(local); |
| |
| local->hw.radiotap_timestamp.units_pos = -1; |
| local->hw.radiotap_timestamp.accuracy = -1; |
| |
| return &local->hw; |
| err_free: |
| wiphy_free(wiphy); |
| return NULL; |
| } |
| EXPORT_SYMBOL(ieee80211_alloc_hw_nm); |
| |
| static int ieee80211_init_cipher_suites(struct ieee80211_local *local) |
| { |
| bool have_wep = !fips_enabled; /* FIPS does not permit the use of RC4 */ |
| bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE); |
| int r = 0, w = 0; |
| u32 *suites; |
| static const u32 cipher_suites[] = { |
| /* keep WEP first, it may be removed below */ |
| WLAN_CIPHER_SUITE_WEP40, |
| WLAN_CIPHER_SUITE_WEP104, |
| WLAN_CIPHER_SUITE_TKIP, |
| WLAN_CIPHER_SUITE_CCMP, |
| WLAN_CIPHER_SUITE_CCMP_256, |
| WLAN_CIPHER_SUITE_GCMP, |
| WLAN_CIPHER_SUITE_GCMP_256, |
| |
| /* keep last -- depends on hw flags! */ |
| WLAN_CIPHER_SUITE_AES_CMAC, |
| WLAN_CIPHER_SUITE_BIP_CMAC_256, |
| WLAN_CIPHER_SUITE_BIP_GMAC_128, |
| WLAN_CIPHER_SUITE_BIP_GMAC_256, |
| }; |
| |
| if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) || |
| local->hw.wiphy->cipher_suites) { |
| /* If the driver advertises, or doesn't support SW crypto, |
| * we only need to remove WEP if necessary. |
| */ |
| if (have_wep) |
| return 0; |
| |
| /* well if it has _no_ ciphers ... fine */ |
| if (!local->hw.wiphy->n_cipher_suites) |
| return 0; |
| |
| /* Driver provides cipher suites, but we need to exclude WEP */ |
| suites = kmemdup(local->hw.wiphy->cipher_suites, |
| sizeof(u32) * local->hw.wiphy->n_cipher_suites, |
| GFP_KERNEL); |
| if (!suites) |
| return -ENOMEM; |
| |
| for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { |
| u32 suite = local->hw.wiphy->cipher_suites[r]; |
| |
| if (suite == WLAN_CIPHER_SUITE_WEP40 || |
| suite == WLAN_CIPHER_SUITE_WEP104) |
| continue; |
| suites[w++] = suite; |
| } |
| } else { |
| /* assign the (software supported and perhaps offloaded) |
| * cipher suites |
| */ |
| local->hw.wiphy->cipher_suites = cipher_suites; |
| local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); |
| |
| if (!have_mfp) |
| local->hw.wiphy->n_cipher_suites -= 4; |
| |
| if (!have_wep) { |
| local->hw.wiphy->cipher_suites += 2; |
| local->hw.wiphy->n_cipher_suites -= 2; |
| } |
| |
| /* not dynamically allocated, so just return */ |
| return 0; |
| } |
| |
| local->hw.wiphy->cipher_suites = suites; |
| local->hw.wiphy->n_cipher_suites = w; |
| local->wiphy_ciphers_allocated = true; |
| |
| return 0; |
| } |
| |
| int ieee80211_register_hw(struct ieee80211_hw *hw) |
| { |
| struct ieee80211_local *local = hw_to_local(hw); |
| int result, i; |
| enum nl80211_band band; |
| int channels, max_bitrates; |
| bool supp_ht, supp_vht, supp_he, supp_eht; |
| struct cfg80211_chan_def dflt_chandef = {}; |
| |
| if (ieee80211_hw_check(hw, QUEUE_CONTROL) && |
| (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE || |
| local->hw.offchannel_tx_hw_queue >= local->hw.queues)) |
| return -EINVAL; |
| |
| if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && |
| (!local->ops->tdls_channel_switch || |
| !local->ops->tdls_cancel_channel_switch || |
| !local->ops->tdls_recv_channel_switch)) |
| return -EOPNOTSUPP; |
| |
| if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_TX_FRAG) && |
| !local->ops->set_frag_threshold)) |
| return -EINVAL; |
| |
| if (WARN_ON(local->hw.wiphy->interface_modes & |
| BIT(NL80211_IFTYPE_NAN) && |
| (!local->ops->start_nan || !local->ops->stop_nan))) |
| return -EINVAL; |
| |
| if (hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) { |
| /* |
| * For drivers capable of doing MLO, assume modern driver |
| * or firmware facilities, so software doesn't have to do |
| * as much, e.g. monitoring beacons would be hard if we |
| * might not even know which link is active at which time. |
| */ |
| if (WARN_ON(!local->use_chanctx)) |
| return -EINVAL; |
| |
| if (WARN_ON(!local->ops->link_info_changed)) |
| return -EINVAL; |
| |
| if (WARN_ON(!ieee80211_hw_check(hw, HAS_RATE_CONTROL))) |
| return -EINVAL; |
| |
| if (WARN_ON(!ieee80211_hw_check(hw, AMPDU_AGGREGATION))) |
| return -EINVAL; |
| |
| if (WARN_ON(ieee80211_hw_check(hw, HOST_BROADCAST_PS_BUFFERING))) |
| return -EINVAL; |
| |
| if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_PS) && |
| (!ieee80211_hw_check(hw, SUPPORTS_DYNAMIC_PS) || |
| ieee80211_hw_check(hw, PS_NULLFUNC_STACK)))) |
| return -EINVAL; |
| |
| if (WARN_ON(!ieee80211_hw_check(hw, MFP_CAPABLE))) |
| return -EINVAL; |
| |
| if (WARN_ON(!ieee80211_hw_check(hw, CONNECTION_MONITOR))) |
| return -EINVAL; |
| |
| if (WARN_ON(ieee80211_hw_check(hw, NEED_DTIM_BEFORE_ASSOC))) |
| return -EINVAL; |
| |
| if (WARN_ON(ieee80211_hw_check(hw, TIMING_BEACON_ONLY))) |
| return -EINVAL; |
| |
| if (WARN_ON(!ieee80211_hw_check(hw, AP_LINK_PS))) |
| return -EINVAL; |
| |
| if (WARN_ON(ieee80211_hw_check(hw, DEAUTH_NEED_MGD_TX_PREP))) |
| return -EINVAL; |
| } |
| |
| #ifdef CONFIG_PM |
| if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume)) |
| return -EINVAL; |
| #endif |
| |
| if (!local->use_chanctx) { |
| for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { |
| const struct ieee80211_iface_combination *comb; |
| |
| comb = &local->hw.wiphy->iface_combinations[i]; |
| |
| if (comb->num_different_channels > 1) |
| return -EINVAL; |
| } |
| } else { |
| /* DFS is not supported with multi-channel combinations yet */ |
| for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { |
| const struct ieee80211_iface_combination *comb; |
| |
| comb = &local->hw.wiphy->iface_combinations[i]; |
| |
| if (comb->radar_detect_widths && |
| comb->num_different_channels > 1) |
| return -EINVAL; |
| } |
| } |
| |
| /* Only HW csum features are currently compatible with mac80211 */ |
| if (WARN_ON(hw->netdev_features & ~MAC80211_SUPPORTED_FEATURES)) |
| return -EINVAL; |
| |
| if (hw->max_report_rates == 0) |
| hw->max_report_rates = hw->max_rates; |
| |
| local->rx_chains = 1; |
| |
| /* |
| * generic code guarantees at least one band, |
| * set this very early because much code assumes |
| * that hw.conf.channel is assigned |
| */ |
| channels = 0; |
| max_bitrates = 0; |
| supp_ht = false; |
| supp_vht = false; |
| supp_he = false; |
| supp_eht = false; |
| for (band = 0; band < NUM_NL80211_BANDS; band++) { |
| struct ieee80211_supported_band *sband; |
| |
| sband = local->hw.wiphy->bands[band]; |
| if (!sband) |
| continue; |
| |
| if (!dflt_chandef.chan) { |
| /* |
| * Assign the first enabled channel to dflt_chandef |
| * from the list of channels |
| */ |
| for (i = 0; i < sband->n_channels; i++) |
| if (!(sband->channels[i].flags & |
| IEEE80211_CHAN_DISABLED)) |
| break; |
| /* if none found then use the first anyway */ |
| if (i == sband->n_channels) |
| i = 0; |
| cfg80211_chandef_create(&dflt_chandef, |
| &sband->channels[i], |
| NL80211_CHAN_NO_HT); |
| /* init channel we're on */ |
| if (!local->use_chanctx && !local->_oper_chandef.chan) { |
| local->hw.conf.chandef = dflt_chandef; |
| local->_oper_chandef = dflt_chandef; |
| } |
| local->monitor_chandef = dflt_chandef; |
| } |
| |
| channels += sband->n_channels; |
| |
| /* |
| * Due to the way the aggregation code handles this and it |
| * being an HT capability, we can't really support delayed |
| * BA in MLO (yet). |
| */ |
| if (WARN_ON(sband->ht_cap.ht_supported && |
| (sband->ht_cap.cap & IEEE80211_HT_CAP_DELAY_BA) && |
| hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)) |
| return -EINVAL; |
| |
| if (max_bitrates < sband->n_bitrates) |
| max_bitrates = sband->n_bitrates; |
| supp_ht = supp_ht || sband->ht_cap.ht_supported; |
| supp_vht = supp_vht || sband->vht_cap.vht_supported; |
| |
| for (i = 0; i < sband->n_iftype_data; i++) { |
| const struct ieee80211_sband_iftype_data *iftd; |
| |
| iftd = &sband->iftype_data[i]; |
| |
| supp_he = supp_he || iftd->he_cap.has_he; |
| supp_eht = supp_eht || iftd->eht_cap.has_eht; |
| } |
| |
| /* HT, VHT, HE require QoS, thus >= 4 queues */ |
| if (WARN_ON(local->hw.queues < IEEE80211_NUM_ACS && |
| (supp_ht || supp_vht || supp_he))) |
| return -EINVAL; |
| |
| /* EHT requires HE support */ |
| if (WARN_ON(supp_eht && !supp_he)) |
| return -EINVAL; |
| |
| if (!sband->ht_cap.ht_supported) |
| continue; |
| |
| /* TODO: consider VHT for RX chains, hopefully it's the same */ |
| local->rx_chains = |
| max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs), |
| local->rx_chains); |
| |
| /* no need to mask, SM_PS_DISABLED has all bits set */ |
| sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED << |
| IEEE80211_HT_CAP_SM_PS_SHIFT; |
| } |
| |
| /* if low-level driver supports AP, we also support VLAN. |
| * drivers advertising SW_CRYPTO_CONTROL should enable AP_VLAN |
| * based on their support to transmit SW encrypted packets. |
| */ |
| if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP) && |
| !ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL)) { |
| hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); |
| hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); |
| } |
| |
| /* mac80211 always supports monitor */ |
| hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
| hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); |
| |
| /* mac80211 doesn't support more than one IBSS interface right now */ |
| for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { |
| const struct ieee80211_iface_combination *c; |
| int j; |
| |
| c = &hw->wiphy->iface_combinations[i]; |
| |
| for (j = 0; j < c->n_limits; j++) |
| if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && |
| c->limits[j].max > 1) |
| return -EINVAL; |
| } |
| |
| local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
| sizeof(void *) * channels, GFP_KERNEL); |
| if (!local->int_scan_req) |
| return -ENOMEM; |
| |
| eth_broadcast_addr(local->int_scan_req->bssid); |
| |
| for (band = 0; band < NUM_NL80211_BANDS; band++) { |
| if (!local->hw.wiphy->bands[band]) |
| continue; |
| local->int_scan_req->rates[band] = (u32) -1; |
| } |
| |
| #ifndef CONFIG_MAC80211_MESH |
| /* mesh depends on Kconfig, but drivers should set it if they want */ |
| local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); |
| #endif |
| |
| /* if the underlying driver supports mesh, mac80211 will (at least) |
| * provide routing of mesh authentication frames to userspace */ |
| if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) |
| local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; |
| |
| /* mac80211 supports control port protocol changing */ |
| local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; |
| |
| if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) { |
| local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; |
| } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) { |
| local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; |
| if (hw->max_signal <= 0) { |
| result = -EINVAL; |
| goto fail_workqueue; |
| } |
| } |
| |
| /* Mac80211 and therefore all drivers using SW crypto only |
| * are able to handle PTK rekeys and Extended Key ID. |
| */ |
| if (!local->ops->set_key) { |
| wiphy_ext_feature_set(local->hw.wiphy, |
| NL80211_EXT_FEATURE_CAN_REPLACE_PTK0); |
| wiphy_ext_feature_set(local->hw.wiphy, |
| NL80211_EXT_FEATURE_EXT_KEY_ID); |
| } |
| |
| if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_ADHOC)) |
| wiphy_ext_feature_set(local->hw.wiphy, |
| NL80211_EXT_FEATURE_DEL_IBSS_STA); |
| |
| /* |
| * Calculate scan IE length -- we need this to alloc |
| * memory and to subtract from the driver limit. It |
| * includes the DS Params, (extended) supported rates, and HT |
| * information -- SSID is the driver's responsibility. |
| */ |
| local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + |
| 3 /* DS Params */; |
| if (supp_ht) |
| local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); |
| |
| if (supp_vht) |
| local->scan_ies_len += |
| 2 + sizeof(struct ieee80211_vht_cap); |
| |
| /* |
| * HE cap element is variable in size - set len to allow max size */ |
| if (supp_he) { |
| local->scan_ies_len += |
| 3 + sizeof(struct ieee80211_he_cap_elem) + |
| sizeof(struct ieee80211_he_mcs_nss_supp) + |
| IEEE80211_HE_PPE_THRES_MAX_LEN; |
| |
| if (supp_eht) |
| local->scan_ies_len += |
| 3 + sizeof(struct ieee80211_eht_cap_elem) + |
| sizeof(struct ieee80211_eht_mcs_nss_supp) + |
| IEEE80211_EHT_PPE_THRES_MAX_LEN; |
| } |
| |
| if (!local->ops->hw_scan) { |
| /* For hw_scan, driver needs to set these up. */ |
| local->hw.wiphy->max_scan_ssids = 4; |
| local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; |
| } |
| |
| /* |
| * If the driver supports any scan IEs, then assume the |
| * limit includes the IEs mac80211 will add, otherwise |
| * leave it at zero and let the driver sort it out; we |
| * still pass our IEs to the driver but userspace will |
| * not be allowed to in that case. |
| */ |
| if (local->hw.wiphy->max_scan_ie_len) |
| local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; |
| |
| result = ieee80211_init_cipher_suites(local); |
| if (result < 0) |
| goto fail_workqueue; |
| |
| if (!local->ops->remain_on_channel) |
| local->hw.wiphy->max_remain_on_channel_duration = 5000; |
| |
| /* mac80211 based drivers don't support internal TDLS setup */ |
| if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) |
| local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; |
| |
| /* mac80211 supports eCSA, if the driver supports STA CSA at all */ |
| if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) |
| local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING; |
| |
| /* mac80211 supports multi BSSID, if the driver supports it */ |
| if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID)) { |
| local->hw.wiphy->support_mbssid = true; |
| if (ieee80211_hw_check(&local->hw, |
| SUPPORTS_ONLY_HE_MULTI_BSSID)) |
| local->hw.wiphy->support_only_he_mbssid = true; |
| else |
| local->ext_capa[2] |= |
| WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT; |
| } |
| |
| local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CNTDWN_COUNTERS_NUM; |
| |
| /* |
| * We use the number of queues for feature tests (QoS, HT) internally |
| * so restrict them appropriately. |
| */ |
| if (hw->queues > IEEE80211_MAX_QUEUES) |
| hw->queues = IEEE80211_MAX_QUEUES; |
| |
| local->workqueue = |
| alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy)); |
| if (!local->workqueue) { |
| result = -ENOMEM; |
| goto fail_workqueue; |
| } |
| |
| /* |
| * The hardware needs headroom for sending the frame, |
| * and we need some headroom for passing the frame to monitor |
| * interfaces, but never both at the same time. |
| */ |
| local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
| IEEE80211_TX_STATUS_HEADROOM); |
| |
| /* |
| * if the driver doesn't specify a max listen interval we |
| * use 5 which should be a safe default |
| */ |
| if (local->hw.max_listen_interval == 0) |
| local->hw.max_listen_interval = 5; |
| |
| local->hw.conf.listen_interval = local->hw.max_listen_interval; |
| |
| local->dynamic_ps_forced_timeout = -1; |
| |
| if (!local->hw.max_nan_de_entries) |
| local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID; |
| |
| if (!local->hw.weight_multiplier) |
| local->hw.weight_multiplier = 1; |
| |
| ieee80211_wep_init(local); |
| |
| local->hw.conf.flags = IEEE80211_CONF_IDLE; |
| |
| ieee80211_led_init(local); |
| |
| result = ieee80211_txq_setup_flows(local); |
| if (result) |
| goto fail_flows; |
| |
| rtnl_lock(); |
| result = ieee80211_init_rate_ctrl_alg(local, |
| hw->rate_control_algorithm); |
| rtnl_unlock(); |
| if (result < 0) { |
| wiphy_debug(local->hw.wiphy, |
| "Failed to initialize rate control algorithm\n"); |
| goto fail_rate; |
| } |
| |
| if (local->rate_ctrl) { |
| clear_bit(IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, hw->flags); |
| if (local->rate_ctrl->ops->capa & RATE_CTRL_CAPA_VHT_EXT_NSS_BW) |
| ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); |
| } |
| |
| /* |
| * If the VHT capabilities don't have IEEE80211_VHT_EXT_NSS_BW_CAPABLE, |
| * or have it when we don't, copy the sband structure and set/clear it. |
| * This is necessary because rate scaling algorithms could be switched |
| * and have different support values. |
| * Print a message so that in the common case the reallocation can be |
| * avoided. |
| */ |
| BUILD_BUG_ON(NUM_NL80211_BANDS > 8 * sizeof(local->sband_allocated)); |
| for (band = 0; band < NUM_NL80211_BANDS; band++) { |
| struct ieee80211_supported_band *sband; |
| bool local_cap, ie_cap; |
| |
| local_cap = ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW); |
| |
| sband = local->hw.wiphy->bands[band]; |
| if (!sband || !sband->vht_cap.vht_supported) |
| continue; |
| |
| ie_cap = !!(sband->vht_cap.vht_mcs.tx_highest & |
| cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE)); |
| |
| if (local_cap == ie_cap) |
| continue; |
| |
| sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL); |
| if (!sband) { |
| result = -ENOMEM; |
| goto fail_rate; |
| } |
| |
| wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT NSS BW flag\n", |
| band); |
| |
| sband->vht_cap.vht_mcs.tx_highest ^= |
| cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE); |
| |
| local->hw.wiphy->bands[band] = sband; |
| local->sband_allocated |= BIT(band); |
| } |
| |
| result = wiphy_register(local->hw.wiphy); |
| if (result < 0) |
| goto fail_wiphy_register; |
| |
| debugfs_hw_add(local); |
| rate_control_add_debugfs(local); |
| |
| rtnl_lock(); |
| wiphy_lock(hw->wiphy); |
| |
| /* add one default STA interface if supported */ |
| if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) && |
| !ieee80211_hw_check(hw, NO_AUTO_VIF)) { |
| struct vif_params params = {0}; |
| |
| result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL, |
| NL80211_IFTYPE_STATION, ¶ms); |
| if (result) |
| wiphy_warn(local->hw.wiphy, |
| "Failed to add default virtual iface\n"); |
| } |
| |
| wiphy_unlock(hw->wiphy); |
| rtnl_unlock(); |
| |
| #ifdef CONFIG_INET |
| local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
| result = register_inetaddr_notifier(&local->ifa_notifier); |
| if (result) |
| goto fail_ifa; |
| #endif |
| |
| #if IS_ENABLED(CONFIG_IPV6) |
| local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed; |
| result = register_inet6addr_notifier(&local->ifa6_notifier); |
| if (result) |
| goto fail_ifa6; |
| #endif |
| |
| return 0; |
| |
| #if IS_ENABLED(CONFIG_IPV6) |
| fail_ifa6: |
| #ifdef CONFIG_INET |
| unregister_inetaddr_notifier(&local->ifa_notifier); |
| #endif |
| #endif |
| #if defined(CONFIG_INET) || defined(CONFIG_IPV6) |
| fail_ifa: |
| #endif |
| wiphy_unregister(local->hw.wiphy); |
| fail_wiphy_register: |
| rtnl_lock(); |
| rate_control_deinitialize(local); |
| ieee80211_remove_interfaces(local); |
| rtnl_unlock(); |
| fail_rate: |
| fail_flows: |
| ieee80211_led_exit(local); |
| destroy_workqueue(local->workqueue); |
| fail_workqueue: |
| if (local->wiphy_ciphers_allocated) { |
| kfree(local->hw.wiphy->cipher_suites); |
| local->wiphy_ciphers_allocated = false; |
| } |
| kfree(local->int_scan_req); |
| return result; |
| } |
| EXPORT_SYMBOL(ieee80211_register_hw); |
| |
| void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
| { |
| struct ieee80211_local *local = hw_to_local(hw); |
| |
| tasklet_kill(&local->tx_pending_tasklet); |
| tasklet_kill(&local->tasklet); |
| |
| #ifdef CONFIG_INET |
| unregister_inetaddr_notifier(&local->ifa_notifier); |
| #endif |
| #if IS_ENABLED(CONFIG_IPV6) |
| unregister_inet6addr_notifier(&local->ifa6_notifier); |
| #endif |
| |
| rtnl_lock(); |
| |
| /* |
| * At this point, interface list manipulations are fine |
| * because the driver cannot be handing us frames any |
| * more and the tasklet is killed. |
| */ |
| ieee80211_remove_interfaces(local); |
| |
| rtnl_unlock(); |
| |
| cancel_delayed_work_sync(&local->roc_work); |
| cancel_work_sync(&local->restart_work); |
| cancel_work_sync(&local->reconfig_filter); |
| flush_work(&local->sched_scan_stopped_work); |
| flush_work(&local->radar_detected_work); |
| |
| ieee80211_clear_tx_pending(local); |
| rate_control_deinitialize(local); |
| |
| if (skb_queue_len(&local->skb_queue) || |
| skb_queue_len(&local->skb_queue_unreliable)) |
| wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); |
| skb_queue_purge(&local->skb_queue); |
| skb_queue_purge(&local->skb_queue_unreliable); |
| |
| wiphy_unregister(local->hw.wiphy); |
| destroy_workqueue(local->workqueue); |
| ieee80211_led_exit(local); |
| kfree(local->int_scan_req); |
| } |
| EXPORT_SYMBOL(ieee80211_unregister_hw); |
| |
| static int ieee80211_free_ack_frame(int id, void *p, void *data) |
| { |
| WARN_ONCE(1, "Have pending ack frames!\n"); |
| kfree_skb(p); |
| return 0; |
| } |
| |
| void ieee80211_free_hw(struct ieee80211_hw *hw) |
| { |
| struct ieee80211_local *local = hw_to_local(hw); |
| enum nl80211_band band; |
| |
| mutex_destroy(&local->iflist_mtx); |
| mutex_destroy(&local->mtx); |
| |
| if (local->wiphy_ciphers_allocated) { |
| kfree(local->hw.wiphy->cipher_suites); |
| local->wiphy_ciphers_allocated = false; |
| } |
| |
| idr_for_each(&local->ack_status_frames, |
| ieee80211_free_ack_frame, NULL); |
| idr_destroy(&local->ack_status_frames); |
| |
| sta_info_stop(local); |
| |
| ieee80211_free_led_names(local); |
| |
| for (band = 0; band < NUM_NL80211_BANDS; band++) { |
| if (!(local->sband_allocated & BIT(band))) |
| continue; |
| kfree(local->hw.wiphy->bands[band]); |
| } |
| |
| wiphy_free(local->hw.wiphy); |
| } |
| EXPORT_SYMBOL(ieee80211_free_hw); |
| |
| static int __init ieee80211_init(void) |
| { |
| struct sk_buff *skb; |
| int ret; |
| |
| BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
| BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + |
| IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
| |
| ret = rc80211_minstrel_init(); |
| if (ret) |
| return ret; |
| |
| ret = ieee80211_iface_init(); |
| if (ret) |
| goto err_netdev; |
| |
| return 0; |
| err_netdev: |
| rc80211_minstrel_exit(); |
| |
| return ret; |
| } |
| |
| static void __exit ieee80211_exit(void) |
| { |
| rc80211_minstrel_exit(); |
| |
| ieee80211s_stop(); |
| |
| ieee80211_iface_exit(); |
| |
| rcu_barrier(); |
| } |
| |
| |
| subsys_initcall(ieee80211_init); |
| module_exit(ieee80211_exit); |
| |
| MODULE_DESCRIPTION("IEEE 802.11 subsystem"); |
| MODULE_LICENSE("GPL"); |