| /* |
| * cfg80211 MLME SAP interface |
| * |
| * Copyright (c) 2009, Jouni Malinen <j@w1.fi> |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/etherdevice.h> |
| #include <linux/netdevice.h> |
| #include <linux/nl80211.h> |
| #include <linux/slab.h> |
| #include <linux/wireless.h> |
| #include <net/cfg80211.h> |
| #include <net/iw_handler.h> |
| #include "core.h" |
| #include "nl80211.h" |
| #include "rdev-ops.h" |
| |
| |
| void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_send_rx_auth(dev); |
| wdev_lock(wdev); |
| |
| nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL); |
| cfg80211_sme_rx_auth(dev, buf, len); |
| |
| wdev_unlock(wdev); |
| } |
| EXPORT_SYMBOL(cfg80211_send_rx_auth); |
| |
| void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss, |
| const u8 *buf, size_t len) |
| { |
| u16 status_code; |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
| u8 *ie = mgmt->u.assoc_resp.variable; |
| int ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable); |
| |
| trace_cfg80211_send_rx_assoc(dev, bss); |
| wdev_lock(wdev); |
| |
| status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); |
| |
| /* |
| * This is a bit of a hack, we don't notify userspace of |
| * a (re-)association reply if we tried to send a reassoc |
| * and got a reject -- we only try again with an assoc |
| * frame instead of reassoc. |
| */ |
| if (status_code != WLAN_STATUS_SUCCESS && wdev->conn && |
| cfg80211_sme_failed_reassoc(wdev)) { |
| cfg80211_put_bss(bss); |
| goto out; |
| } |
| |
| nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL); |
| |
| if (status_code != WLAN_STATUS_SUCCESS && wdev->conn) { |
| cfg80211_sme_failed_assoc(wdev); |
| /* |
| * do not call connect_result() now because the |
| * sme will schedule work that does it later. |
| */ |
| cfg80211_put_bss(bss); |
| goto out; |
| } |
| |
| if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) { |
| /* |
| * This is for the userspace SME, the CONNECTING |
| * state will be changed to CONNECTED by |
| * __cfg80211_connect_result() below. |
| */ |
| wdev->sme_state = CFG80211_SME_CONNECTING; |
| } |
| |
| /* this consumes the bss reference */ |
| __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs, |
| status_code, |
| status_code == WLAN_STATUS_SUCCESS, bss); |
| out: |
| wdev_unlock(wdev); |
| } |
| EXPORT_SYMBOL(cfg80211_send_rx_assoc); |
| |
| void __cfg80211_send_deauth(struct net_device *dev, |
| const u8 *buf, size_t len) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
| const u8 *bssid = mgmt->bssid; |
| bool was_current = false; |
| |
| trace___cfg80211_send_deauth(dev); |
| ASSERT_WDEV_LOCK(wdev); |
| |
| if (wdev->current_bss && |
| ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) { |
| cfg80211_unhold_bss(wdev->current_bss); |
| cfg80211_put_bss(&wdev->current_bss->pub); |
| wdev->current_bss = NULL; |
| was_current = true; |
| } |
| |
| nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL); |
| |
| if (wdev->sme_state == CFG80211_SME_CONNECTED && was_current) { |
| u16 reason_code; |
| bool from_ap; |
| |
| reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); |
| |
| from_ap = !ether_addr_equal(mgmt->sa, dev->dev_addr); |
| __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap); |
| } else if (wdev->sme_state == CFG80211_SME_CONNECTING) { |
| __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0, |
| WLAN_STATUS_UNSPECIFIED_FAILURE, |
| false, NULL); |
| } |
| } |
| EXPORT_SYMBOL(__cfg80211_send_deauth); |
| |
| void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| |
| wdev_lock(wdev); |
| __cfg80211_send_deauth(dev, buf, len); |
| wdev_unlock(wdev); |
| } |
| EXPORT_SYMBOL(cfg80211_send_deauth); |
| |
| void __cfg80211_send_disassoc(struct net_device *dev, |
| const u8 *buf, size_t len) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
| const u8 *bssid = mgmt->bssid; |
| u16 reason_code; |
| bool from_ap; |
| |
| trace___cfg80211_send_disassoc(dev); |
| ASSERT_WDEV_LOCK(wdev); |
| |
| nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL); |
| |
| if (wdev->sme_state != CFG80211_SME_CONNECTED) |
| return; |
| |
| if (wdev->current_bss && |
| ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) { |
| cfg80211_sme_disassoc(dev, wdev->current_bss); |
| cfg80211_unhold_bss(wdev->current_bss); |
| cfg80211_put_bss(&wdev->current_bss->pub); |
| wdev->current_bss = NULL; |
| } else |
| WARN_ON(1); |
| |
| |
| reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); |
| |
| from_ap = !ether_addr_equal(mgmt->sa, dev->dev_addr); |
| __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap); |
| } |
| EXPORT_SYMBOL(__cfg80211_send_disassoc); |
| |
| void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| |
| wdev_lock(wdev); |
| __cfg80211_send_disassoc(dev, buf, len); |
| wdev_unlock(wdev); |
| } |
| EXPORT_SYMBOL(cfg80211_send_disassoc); |
| |
| void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf, |
| size_t len) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_send_unprot_deauth(dev); |
| nl80211_send_unprot_deauth(rdev, dev, buf, len, GFP_ATOMIC); |
| } |
| EXPORT_SYMBOL(cfg80211_send_unprot_deauth); |
| |
| void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf, |
| size_t len) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_send_unprot_disassoc(dev); |
| nl80211_send_unprot_disassoc(rdev, dev, buf, len, GFP_ATOMIC); |
| } |
| EXPORT_SYMBOL(cfg80211_send_unprot_disassoc); |
| |
| void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_send_auth_timeout(dev, addr); |
| wdev_lock(wdev); |
| |
| nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL); |
| if (wdev->sme_state == CFG80211_SME_CONNECTING) |
| __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0, |
| WLAN_STATUS_UNSPECIFIED_FAILURE, |
| false, NULL); |
| |
| wdev_unlock(wdev); |
| } |
| EXPORT_SYMBOL(cfg80211_send_auth_timeout); |
| |
| void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_send_assoc_timeout(dev, addr); |
| wdev_lock(wdev); |
| |
| nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL); |
| if (wdev->sme_state == CFG80211_SME_CONNECTING) |
| __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0, |
| WLAN_STATUS_UNSPECIFIED_FAILURE, |
| false, NULL); |
| |
| wdev_unlock(wdev); |
| } |
| EXPORT_SYMBOL(cfg80211_send_assoc_timeout); |
| |
| void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, |
| enum nl80211_key_type key_type, int key_id, |
| const u8 *tsc, gfp_t gfp) |
| { |
| struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| #ifdef CONFIG_CFG80211_WEXT |
| union iwreq_data wrqu; |
| char *buf = kmalloc(128, gfp); |
| |
| if (buf) { |
| sprintf(buf, "MLME-MICHAELMICFAILURE.indication(" |
| "keyid=%d %scast addr=%pM)", key_id, |
| key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni", |
| addr); |
| memset(&wrqu, 0, sizeof(wrqu)); |
| wrqu.data.length = strlen(buf); |
| wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); |
| kfree(buf); |
| } |
| #endif |
| |
| trace_cfg80211_michael_mic_failure(dev, addr, key_type, key_id, tsc); |
| nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_michael_mic_failure); |
| |
| /* some MLME handling for userspace SME */ |
| int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, |
| struct net_device *dev, |
| struct ieee80211_channel *chan, |
| enum nl80211_auth_type auth_type, |
| const u8 *bssid, |
| const u8 *ssid, int ssid_len, |
| const u8 *ie, int ie_len, |
| const u8 *key, int key_len, int key_idx, |
| const u8 *sae_data, int sae_data_len) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct cfg80211_auth_request req; |
| int err; |
| |
| ASSERT_WDEV_LOCK(wdev); |
| |
| if (auth_type == NL80211_AUTHTYPE_SHARED_KEY) |
| if (!key || !key_len || key_idx < 0 || key_idx > 4) |
| return -EINVAL; |
| |
| if (wdev->current_bss && |
| ether_addr_equal(bssid, wdev->current_bss->pub.bssid)) |
| return -EALREADY; |
| |
| memset(&req, 0, sizeof(req)); |
| |
| req.ie = ie; |
| req.ie_len = ie_len; |
| req.sae_data = sae_data; |
| req.sae_data_len = sae_data_len; |
| req.auth_type = auth_type; |
| req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, |
| WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); |
| req.key = key; |
| req.key_len = key_len; |
| req.key_idx = key_idx; |
| if (!req.bss) |
| return -ENOENT; |
| |
| err = cfg80211_can_use_chan(rdev, wdev, req.bss->channel, |
| CHAN_MODE_SHARED); |
| if (err) |
| goto out; |
| |
| err = rdev_auth(rdev, dev, &req); |
| |
| out: |
| cfg80211_put_bss(req.bss); |
| return err; |
| } |
| |
| int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, |
| struct net_device *dev, struct ieee80211_channel *chan, |
| enum nl80211_auth_type auth_type, const u8 *bssid, |
| const u8 *ssid, int ssid_len, |
| const u8 *ie, int ie_len, |
| const u8 *key, int key_len, int key_idx, |
| const u8 *sae_data, int sae_data_len) |
| { |
| int err; |
| |
| mutex_lock(&rdev->devlist_mtx); |
| wdev_lock(dev->ieee80211_ptr); |
| err = __cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, |
| ssid, ssid_len, ie, ie_len, |
| key, key_len, key_idx, |
| sae_data, sae_data_len); |
| wdev_unlock(dev->ieee80211_ptr); |
| mutex_unlock(&rdev->devlist_mtx); |
| |
| return err; |
| } |
| |
| /* Do a logical ht_capa &= ht_capa_mask. */ |
| void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa, |
| const struct ieee80211_ht_cap *ht_capa_mask) |
| { |
| int i; |
| u8 *p1, *p2; |
| if (!ht_capa_mask) { |
| memset(ht_capa, 0, sizeof(*ht_capa)); |
| return; |
| } |
| |
| p1 = (u8*)(ht_capa); |
| p2 = (u8*)(ht_capa_mask); |
| for (i = 0; i<sizeof(*ht_capa); i++) |
| p1[i] &= p2[i]; |
| } |
| |
| int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, |
| struct net_device *dev, |
| struct ieee80211_channel *chan, |
| const u8 *bssid, const u8 *prev_bssid, |
| const u8 *ssid, int ssid_len, |
| const u8 *ie, int ie_len, bool use_mfp, |
| struct cfg80211_crypto_settings *crypt, |
| u32 assoc_flags, struct ieee80211_ht_cap *ht_capa, |
| struct ieee80211_ht_cap *ht_capa_mask) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct cfg80211_assoc_request req; |
| int err; |
| bool was_connected = false; |
| |
| ASSERT_WDEV_LOCK(wdev); |
| |
| memset(&req, 0, sizeof(req)); |
| |
| if (wdev->current_bss && prev_bssid && |
| ether_addr_equal(wdev->current_bss->pub.bssid, prev_bssid)) { |
| /* |
| * Trying to reassociate: Allow this to proceed and let the old |
| * association to be dropped when the new one is completed. |
| */ |
| if (wdev->sme_state == CFG80211_SME_CONNECTED) { |
| was_connected = true; |
| wdev->sme_state = CFG80211_SME_CONNECTING; |
| } |
| } else if (wdev->current_bss) |
| return -EALREADY; |
| |
| req.ie = ie; |
| req.ie_len = ie_len; |
| memcpy(&req.crypto, crypt, sizeof(req.crypto)); |
| req.use_mfp = use_mfp; |
| req.prev_bssid = prev_bssid; |
| req.flags = assoc_flags; |
| if (ht_capa) |
| memcpy(&req.ht_capa, ht_capa, sizeof(req.ht_capa)); |
| if (ht_capa_mask) |
| memcpy(&req.ht_capa_mask, ht_capa_mask, |
| sizeof(req.ht_capa_mask)); |
| cfg80211_oper_and_ht_capa(&req.ht_capa_mask, |
| rdev->wiphy.ht_capa_mod_mask); |
| |
| req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, |
| WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); |
| if (!req.bss) { |
| if (was_connected) |
| wdev->sme_state = CFG80211_SME_CONNECTED; |
| return -ENOENT; |
| } |
| |
| err = cfg80211_can_use_chan(rdev, wdev, req.bss->channel, |
| CHAN_MODE_SHARED); |
| if (err) |
| goto out; |
| |
| err = rdev_assoc(rdev, dev, &req); |
| |
| out: |
| if (err) { |
| if (was_connected) |
| wdev->sme_state = CFG80211_SME_CONNECTED; |
| cfg80211_put_bss(req.bss); |
| } |
| |
| return err; |
| } |
| |
| int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, |
| struct net_device *dev, |
| struct ieee80211_channel *chan, |
| const u8 *bssid, const u8 *prev_bssid, |
| const u8 *ssid, int ssid_len, |
| const u8 *ie, int ie_len, bool use_mfp, |
| struct cfg80211_crypto_settings *crypt, |
| u32 assoc_flags, struct ieee80211_ht_cap *ht_capa, |
| struct ieee80211_ht_cap *ht_capa_mask) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| int err; |
| |
| mutex_lock(&rdev->devlist_mtx); |
| wdev_lock(wdev); |
| err = __cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid, |
| ssid, ssid_len, ie, ie_len, use_mfp, crypt, |
| assoc_flags, ht_capa, ht_capa_mask); |
| wdev_unlock(wdev); |
| mutex_unlock(&rdev->devlist_mtx); |
| |
| return err; |
| } |
| |
| int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, |
| struct net_device *dev, const u8 *bssid, |
| const u8 *ie, int ie_len, u16 reason, |
| bool local_state_change) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct cfg80211_deauth_request req = { |
| .bssid = bssid, |
| .reason_code = reason, |
| .ie = ie, |
| .ie_len = ie_len, |
| .local_state_change = local_state_change, |
| }; |
| |
| ASSERT_WDEV_LOCK(wdev); |
| |
| if (local_state_change && (!wdev->current_bss || |
| !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) |
| return 0; |
| |
| return rdev_deauth(rdev, dev, &req); |
| } |
| |
| int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, |
| struct net_device *dev, const u8 *bssid, |
| const u8 *ie, int ie_len, u16 reason, |
| bool local_state_change) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| int err; |
| |
| wdev_lock(wdev); |
| err = __cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason, |
| local_state_change); |
| wdev_unlock(wdev); |
| |
| return err; |
| } |
| |
| static int __cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, |
| struct net_device *dev, const u8 *bssid, |
| const u8 *ie, int ie_len, u16 reason, |
| bool local_state_change) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct cfg80211_disassoc_request req; |
| |
| ASSERT_WDEV_LOCK(wdev); |
| |
| if (wdev->sme_state != CFG80211_SME_CONNECTED) |
| return -ENOTCONN; |
| |
| if (WARN_ON(!wdev->current_bss)) |
| return -ENOTCONN; |
| |
| memset(&req, 0, sizeof(req)); |
| req.reason_code = reason; |
| req.local_state_change = local_state_change; |
| req.ie = ie; |
| req.ie_len = ie_len; |
| if (ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) |
| req.bss = &wdev->current_bss->pub; |
| else |
| return -ENOTCONN; |
| |
| return rdev_disassoc(rdev, dev, &req); |
| } |
| |
| int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, |
| struct net_device *dev, const u8 *bssid, |
| const u8 *ie, int ie_len, u16 reason, |
| bool local_state_change) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| int err; |
| |
| wdev_lock(wdev); |
| err = __cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason, |
| local_state_change); |
| wdev_unlock(wdev); |
| |
| return err; |
| } |
| |
| void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, |
| struct net_device *dev) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct cfg80211_deauth_request req; |
| u8 bssid[ETH_ALEN]; |
| |
| ASSERT_WDEV_LOCK(wdev); |
| |
| if (!rdev->ops->deauth) |
| return; |
| |
| memset(&req, 0, sizeof(req)); |
| req.reason_code = WLAN_REASON_DEAUTH_LEAVING; |
| req.ie = NULL; |
| req.ie_len = 0; |
| |
| if (!wdev->current_bss) |
| return; |
| |
| memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN); |
| req.bssid = bssid; |
| rdev_deauth(rdev, dev, &req); |
| |
| if (wdev->current_bss) { |
| cfg80211_unhold_bss(wdev->current_bss); |
| cfg80211_put_bss(&wdev->current_bss->pub); |
| wdev->current_bss = NULL; |
| } |
| } |
| |
| void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, |
| struct ieee80211_channel *chan, |
| unsigned int duration, gfp_t gfp) |
| { |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); |
| nl80211_send_remain_on_channel(rdev, wdev, cookie, chan, duration, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_ready_on_channel); |
| |
| void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, |
| struct ieee80211_channel *chan, |
| gfp_t gfp) |
| { |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); |
| nl80211_send_remain_on_channel_cancel(rdev, wdev, cookie, chan, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); |
| |
| void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, |
| struct station_info *sinfo, gfp_t gfp) |
| { |
| struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_new_sta(dev, mac_addr, sinfo); |
| nl80211_send_sta_event(rdev, dev, mac_addr, sinfo, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_new_sta); |
| |
| void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp) |
| { |
| struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_del_sta(dev, mac_addr); |
| nl80211_send_sta_del_event(rdev, dev, mac_addr, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_del_sta); |
| |
| void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, |
| enum nl80211_connect_failed_reason reason, |
| gfp_t gfp) |
| { |
| struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| nl80211_send_conn_failed_event(rdev, dev, mac_addr, reason, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_conn_failed); |
| |
| struct cfg80211_mgmt_registration { |
| struct list_head list; |
| |
| u32 nlportid; |
| |
| int match_len; |
| |
| __le16 frame_type; |
| |
| u8 match[]; |
| }; |
| |
| int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid, |
| u16 frame_type, const u8 *match_data, |
| int match_len) |
| { |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| struct cfg80211_mgmt_registration *reg, *nreg; |
| int err = 0; |
| u16 mgmt_type; |
| |
| if (!wdev->wiphy->mgmt_stypes) |
| return -EOPNOTSUPP; |
| |
| if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT) |
| return -EINVAL; |
| |
| if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) |
| return -EINVAL; |
| |
| mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4; |
| if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type))) |
| return -EINVAL; |
| |
| nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL); |
| if (!nreg) |
| return -ENOMEM; |
| |
| spin_lock_bh(&wdev->mgmt_registrations_lock); |
| |
| list_for_each_entry(reg, &wdev->mgmt_registrations, list) { |
| int mlen = min(match_len, reg->match_len); |
| |
| if (frame_type != le16_to_cpu(reg->frame_type)) |
| continue; |
| |
| if (memcmp(reg->match, match_data, mlen) == 0) { |
| err = -EALREADY; |
| break; |
| } |
| } |
| |
| if (err) { |
| kfree(nreg); |
| goto out; |
| } |
| |
| memcpy(nreg->match, match_data, match_len); |
| nreg->match_len = match_len; |
| nreg->nlportid = snd_portid; |
| nreg->frame_type = cpu_to_le16(frame_type); |
| list_add(&nreg->list, &wdev->mgmt_registrations); |
| |
| if (rdev->ops->mgmt_frame_register) |
| rdev_mgmt_frame_register(rdev, wdev, frame_type, true); |
| |
| out: |
| spin_unlock_bh(&wdev->mgmt_registrations_lock); |
| |
| return err; |
| } |
| |
| void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid) |
| { |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| struct cfg80211_mgmt_registration *reg, *tmp; |
| |
| spin_lock_bh(&wdev->mgmt_registrations_lock); |
| |
| list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) { |
| if (reg->nlportid != nlportid) |
| continue; |
| |
| if (rdev->ops->mgmt_frame_register) { |
| u16 frame_type = le16_to_cpu(reg->frame_type); |
| |
| rdev_mgmt_frame_register(rdev, wdev, |
| frame_type, false); |
| } |
| |
| list_del(®->list); |
| kfree(reg); |
| } |
| |
| spin_unlock_bh(&wdev->mgmt_registrations_lock); |
| |
| if (nlportid == wdev->ap_unexpected_nlportid) |
| wdev->ap_unexpected_nlportid = 0; |
| } |
| |
| void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev) |
| { |
| struct cfg80211_mgmt_registration *reg, *tmp; |
| |
| spin_lock_bh(&wdev->mgmt_registrations_lock); |
| |
| list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) { |
| list_del(®->list); |
| kfree(reg); |
| } |
| |
| spin_unlock_bh(&wdev->mgmt_registrations_lock); |
| } |
| |
| int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, |
| struct wireless_dev *wdev, |
| struct ieee80211_channel *chan, bool offchan, |
| unsigned int wait, const u8 *buf, size_t len, |
| bool no_cck, bool dont_wait_for_ack, u64 *cookie) |
| { |
| const struct ieee80211_mgmt *mgmt; |
| u16 stype; |
| |
| if (!wdev->wiphy->mgmt_stypes) |
| return -EOPNOTSUPP; |
| |
| if (!rdev->ops->mgmt_tx) |
| return -EOPNOTSUPP; |
| |
| if (len < 24 + 1) |
| return -EINVAL; |
| |
| mgmt = (const struct ieee80211_mgmt *) buf; |
| |
| if (!ieee80211_is_mgmt(mgmt->frame_control)) |
| return -EINVAL; |
| |
| stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE; |
| if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4))) |
| return -EINVAL; |
| |
| if (ieee80211_is_action(mgmt->frame_control) && |
| mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) { |
| int err = 0; |
| |
| wdev_lock(wdev); |
| |
| switch (wdev->iftype) { |
| case NL80211_IFTYPE_ADHOC: |
| case NL80211_IFTYPE_STATION: |
| case NL80211_IFTYPE_P2P_CLIENT: |
| if (!wdev->current_bss) { |
| err = -ENOTCONN; |
| break; |
| } |
| |
| if (!ether_addr_equal(wdev->current_bss->pub.bssid, |
| mgmt->bssid)) { |
| err = -ENOTCONN; |
| break; |
| } |
| |
| /* |
| * check for IBSS DA must be done by driver as |
| * cfg80211 doesn't track the stations |
| */ |
| if (wdev->iftype == NL80211_IFTYPE_ADHOC) |
| break; |
| |
| /* for station, check that DA is the AP */ |
| if (!ether_addr_equal(wdev->current_bss->pub.bssid, |
| mgmt->da)) { |
| err = -ENOTCONN; |
| break; |
| } |
| break; |
| case NL80211_IFTYPE_AP: |
| case NL80211_IFTYPE_P2P_GO: |
| case NL80211_IFTYPE_AP_VLAN: |
| if (!ether_addr_equal(mgmt->bssid, wdev_address(wdev))) |
| err = -EINVAL; |
| break; |
| case NL80211_IFTYPE_MESH_POINT: |
| if (!ether_addr_equal(mgmt->sa, mgmt->bssid)) { |
| err = -EINVAL; |
| break; |
| } |
| /* |
| * check for mesh DA must be done by driver as |
| * cfg80211 doesn't track the stations |
| */ |
| break; |
| case NL80211_IFTYPE_P2P_DEVICE: |
| /* |
| * fall through, P2P device only supports |
| * public action frames |
| */ |
| default: |
| err = -EOPNOTSUPP; |
| break; |
| } |
| wdev_unlock(wdev); |
| |
| if (err) |
| return err; |
| } |
| |
| if (!ether_addr_equal(mgmt->sa, wdev_address(wdev))) |
| return -EINVAL; |
| |
| /* Transmit the Action frame as requested by user space */ |
| return rdev_mgmt_tx(rdev, wdev, chan, offchan, |
| wait, buf, len, no_cck, dont_wait_for_ack, |
| cookie); |
| } |
| |
| bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_mbm, |
| const u8 *buf, size_t len, gfp_t gfp) |
| { |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| struct cfg80211_mgmt_registration *reg; |
| const struct ieee80211_txrx_stypes *stypes = |
| &wiphy->mgmt_stypes[wdev->iftype]; |
| struct ieee80211_mgmt *mgmt = (void *)buf; |
| const u8 *data; |
| int data_len; |
| bool result = false; |
| __le16 ftype = mgmt->frame_control & |
| cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE); |
| u16 stype; |
| |
| trace_cfg80211_rx_mgmt(wdev, freq, sig_mbm); |
| stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4; |
| |
| if (!(stypes->rx & BIT(stype))) { |
| trace_cfg80211_return_bool(false); |
| return false; |
| } |
| |
| data = buf + ieee80211_hdrlen(mgmt->frame_control); |
| data_len = len - ieee80211_hdrlen(mgmt->frame_control); |
| |
| spin_lock_bh(&wdev->mgmt_registrations_lock); |
| |
| list_for_each_entry(reg, &wdev->mgmt_registrations, list) { |
| if (reg->frame_type != ftype) |
| continue; |
| |
| if (reg->match_len > data_len) |
| continue; |
| |
| if (memcmp(reg->match, data, reg->match_len)) |
| continue; |
| |
| /* found match! */ |
| |
| /* Indicate the received Action frame to user space */ |
| if (nl80211_send_mgmt(rdev, wdev, reg->nlportid, |
| freq, sig_mbm, |
| buf, len, gfp)) |
| continue; |
| |
| result = true; |
| break; |
| } |
| |
| spin_unlock_bh(&wdev->mgmt_registrations_lock); |
| |
| trace_cfg80211_return_bool(result); |
| return result; |
| } |
| EXPORT_SYMBOL(cfg80211_rx_mgmt); |
| |
| void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, |
| const u8 *buf, size_t len, bool ack, gfp_t gfp) |
| { |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); |
| |
| /* Indicate TX status of the Action frame to user space */ |
| nl80211_send_mgmt_tx_status(rdev, wdev, cookie, buf, len, ack, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_mgmt_tx_status); |
| |
| void cfg80211_cqm_rssi_notify(struct net_device *dev, |
| enum nl80211_cqm_rssi_threshold_event rssi_event, |
| gfp_t gfp) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_cqm_rssi_notify(dev, rssi_event); |
| |
| /* Indicate roaming trigger event to user space */ |
| nl80211_send_cqm_rssi_notify(rdev, dev, rssi_event, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); |
| |
| void cfg80211_cqm_pktloss_notify(struct net_device *dev, |
| const u8 *peer, u32 num_packets, gfp_t gfp) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); |
| |
| /* Indicate roaming trigger event to user space */ |
| nl80211_send_cqm_pktloss_notify(rdev, dev, peer, num_packets, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); |
| |
| void cfg80211_cqm_txe_notify(struct net_device *dev, |
| const u8 *peer, u32 num_packets, |
| u32 rate, u32 intvl, gfp_t gfp) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| nl80211_send_cqm_txe_notify(rdev, dev, peer, num_packets, |
| rate, intvl, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_cqm_txe_notify); |
| |
| void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, |
| const u8 *replay_ctr, gfp_t gfp) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_gtk_rekey_notify(dev, bssid); |
| nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); |
| |
| void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, |
| const u8 *bssid, bool preauth, gfp_t gfp) |
| { |
| struct wireless_dev *wdev = dev->ieee80211_ptr; |
| struct wiphy *wiphy = wdev->wiphy; |
| struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
| |
| trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); |
| nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); |
| } |
| EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); |