diff options
Diffstat (limited to 'net/wireless/sme.c')
| -rw-r--r-- | net/wireless/sme.c | 792 |
1 files changed, 792 insertions, 0 deletions
diff --git a/net/wireless/sme.c b/net/wireless/sme.c new file mode 100644 index 000000000000..df9173f73604 --- /dev/null +++ b/net/wireless/sme.c @@ -0,0 +1,792 @@ +/* + * SME code for cfg80211's connect emulation. + * + * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> + * Copyright (C) 2009 Intel Corporation. All rights reserved. + */ + +#include <linux/etherdevice.h> +#include <linux/if_arp.h> +#include <linux/workqueue.h> +#include <net/cfg80211.h> +#include <net/rtnetlink.h> +#include "nl80211.h" + +struct cfg80211_conn { + struct cfg80211_connect_params params; + /* these are sub-states of the _CONNECTING sme_state */ + enum { + CFG80211_CONN_IDLE, + CFG80211_CONN_SCANNING, + CFG80211_CONN_SCAN_AGAIN, + CFG80211_CONN_AUTHENTICATE_NEXT, + CFG80211_CONN_AUTHENTICATING, + CFG80211_CONN_ASSOCIATE_NEXT, + CFG80211_CONN_ASSOCIATING, + } state; + u8 bssid[ETH_ALEN]; + u8 *ie; + size_t ie_len; + bool auto_auth; +}; + + +static int cfg80211_conn_scan(struct wireless_dev *wdev) +{ + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + struct cfg80211_scan_request *request; + int n_channels, err; + + ASSERT_RTNL(); + ASSERT_RDEV_LOCK(rdev); + ASSERT_WDEV_LOCK(wdev); + + if (rdev->scan_req) + return -EBUSY; + + if (wdev->conn->params.channel) { + n_channels = 1; + } else { + enum ieee80211_band band; + n_channels = 0; + + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + if (!wdev->wiphy->bands[band]) + continue; + n_channels += wdev->wiphy->bands[band]->n_channels; + } + } + request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) + + sizeof(request->channels[0]) * n_channels, + GFP_KERNEL); + if (!request) + return -ENOMEM; + + request->channels = (void *)((char *)request + sizeof(*request)); + if (wdev->conn->params.channel) + request->channels[0] = wdev->conn->params.channel; + else { + int i = 0, j; + enum ieee80211_band band; + + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + if (!wdev->wiphy->bands[band]) + continue; + for (j = 0; j < wdev->wiphy->bands[band]->n_channels; + i++, j++) + request->channels[i] = + &wdev->wiphy->bands[band]->channels[j]; + } + } + request->n_channels = n_channels; + request->ssids = (void *)(request->channels + n_channels); + request->n_ssids = 1; + + memcpy(request->ssids[0].ssid, wdev->conn->params.ssid, + wdev->conn->params.ssid_len); + request->ssids[0].ssid_len = wdev->conn->params.ssid_len; + + request->ifidx = wdev->netdev->ifindex; + request->wiphy = &rdev->wiphy; + + rdev->scan_req = request; + + err = rdev->ops->scan(wdev->wiphy, wdev->netdev, request); + if (!err) { + wdev->conn->state = CFG80211_CONN_SCANNING; + nl80211_send_scan_start(rdev, wdev->netdev); + } else { + rdev->scan_req = NULL; + kfree(request); + } + return err; +} + +static int cfg80211_conn_do_work(struct wireless_dev *wdev) +{ + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + struct cfg80211_connect_params *params; + int err; + + ASSERT_WDEV_LOCK(wdev); + + if (!wdev->conn) + return 0; + + params = &wdev->conn->params; + + switch (wdev->conn->state) { + case CFG80211_CONN_SCAN_AGAIN: + return cfg80211_conn_scan(wdev); + case CFG80211_CONN_AUTHENTICATE_NEXT: + BUG_ON(!rdev->ops->auth); + wdev->conn->state = CFG80211_CONN_AUTHENTICATING; + return __cfg80211_mlme_auth(rdev, wdev->netdev, + params->channel, params->auth_type, + params->bssid, + params->ssid, params->ssid_len, + NULL, 0); + case CFG80211_CONN_ASSOCIATE_NEXT: + BUG_ON(!rdev->ops->assoc); + wdev->conn->state = CFG80211_CONN_ASSOCIATING; + /* + * We could, later, implement roaming here and then actually + * set prev_bssid to non-NULL. But then we need to be aware + * that some APs don't like that -- so we'd need to retry + * the association. + */ + err = __cfg80211_mlme_assoc(rdev, wdev->netdev, + params->channel, params->bssid, + NULL, + params->ssid, params->ssid_len, + params->ie, params->ie_len, + false, ¶ms->crypto); + if (err) + __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid, + NULL, 0, + WLAN_REASON_DEAUTH_LEAVING); + return err; + default: + return 0; + } +} + +void cfg80211_conn_work(struct work_struct *work) +{ + struct cfg80211_registered_device *rdev = + container_of(work, struct cfg80211_registered_device, conn_work); + struct wireless_dev *wdev; + + rtnl_lock(); + cfg80211_lock_rdev(rdev); + mutex_lock(&rdev->devlist_mtx); + + list_for_each_entry(wdev, &rdev->netdev_list, list) { + wdev_lock(wdev); + if (!netif_running(wdev->netdev)) { + wdev_unlock(wdev); + continue; + } + if (wdev->sme_state != CFG80211_SME_CONNECTING) { + wdev_unlock(wdev); + continue; + } + if (cfg80211_conn_do_work(wdev)) + __cfg80211_connect_result( + wdev->netdev, + wdev->conn->params.bssid, + NULL, 0, NULL, 0, + WLAN_STATUS_UNSPECIFIED_FAILURE, + false); + wdev_unlock(wdev); + } + + mutex_unlock(&rdev->devlist_mtx); + cfg80211_unlock_rdev(rdev); + rtnl_unlock(); +} + +static bool cfg80211_get_conn_bss(struct wireless_dev *wdev) +{ + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + struct cfg80211_bss *bss; + u16 capa = WLAN_CAPABILITY_ESS; + + ASSERT_WDEV_LOCK(wdev); + + if (wdev->conn->params.privacy) + capa |= WLAN_CAPABILITY_PRIVACY; + + bss = cfg80211_get_bss(wdev->wiphy, NULL, wdev->conn->params.bssid, + wdev->conn->params.ssid, + wdev->conn->params.ssid_len, + WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY, + capa); + if (!bss) + return false; + + memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN); + wdev->conn->params.bssid = wdev->conn->bssid; + wdev->conn->params.channel = bss->channel; + wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; + schedule_work(&rdev->conn_work); + + cfg80211_put_bss(bss); + return true; +} + +static void __cfg80211_sme_scan_done(struct net_device *dev) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + + ASSERT_WDEV_LOCK(wdev); + + if (wdev->sme_state != CFG80211_SME_CONNECTING) + return; + + if (WARN_ON(!wdev->conn)) + return; + + if (wdev->conn->state != CFG80211_CONN_SCANNING && + wdev->conn->state != CFG80211_CONN_SCAN_AGAIN) + return; + + if (!cfg80211_get_conn_bss(wdev)) { + /* not found */ + if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) + schedule_work(&rdev->conn_work); + else + __cfg80211_connect_result( + wdev->netdev, + wdev->conn->params.bssid, + NULL, 0, NULL, 0, + WLAN_STATUS_UNSPECIFIED_FAILURE, + false); + } +} + +void cfg80211_sme_scan_done(struct net_device *dev) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + + wdev_lock(wdev); + __cfg80211_sme_scan_done(dev); + wdev_unlock(wdev); +} + +void cfg80211_sme_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); + struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; + u16 status_code = le16_to_cpu(mgmt->u.auth.status_code); + + ASSERT_WDEV_LOCK(wdev); + + /* should only RX auth frames when connecting */ + if (wdev->sme_state != CFG80211_SME_CONNECTING) + return; + + if (WARN_ON(!wdev->conn)) + return; + + if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG && + wdev->conn->auto_auth && + wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) { + /* select automatically between only open, shared, leap */ + switch (wdev->conn->params.auth_type) { + case NL80211_AUTHTYPE_OPEN_SYSTEM: + wdev->conn->params.auth_type = + NL80211_AUTHTYPE_SHARED_KEY; + break; + case NL80211_AUTHTYPE_SHARED_KEY: + wdev->conn->params.auth_type = + NL80211_AUTHTYPE_NETWORK_EAP; + break; + default: + /* huh? */ + wdev->conn->params.auth_type = + NL80211_AUTHTYPE_OPEN_SYSTEM; + break; + } + wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; + schedule_work(&rdev->conn_work); + } else if (status_code != WLAN_STATUS_SUCCESS) { + wdev->sme_state = CFG80211_SME_IDLE; + kfree(wdev->conn); + wdev->conn = NULL; + } else if (wdev->sme_state == CFG80211_SME_CONNECTING && + wdev->conn->state == CFG80211_CONN_AUTHENTICATING) { + wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; + schedule_work(&rdev->conn_work); + } +} + +void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, + const u8 *req_ie, size_t req_ie_len, + const u8 *resp_ie, size_t resp_ie_len, + u16 status, bool wextev) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_bss *bss; +#ifdef CONFIG_WIRELESS_EXT + union iwreq_data wrqu; +#endif + + ASSERT_WDEV_LOCK(wdev); + + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + return; + + if (wdev->sme_state == CFG80211_SME_CONNECTED) + nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), dev, + bssid, req_ie, req_ie_len, + resp_ie, resp_ie_len, GFP_KERNEL); + else + nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev, + bssid, req_ie, req_ie_len, + resp_ie, resp_ie_len, + status, GFP_KERNEL); + +#ifdef CONFIG_WIRELESS_EXT + if (wextev) { + if (req_ie && status == WLAN_STATUS_SUCCESS) { + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.data.length = req_ie_len; + wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, req_ie); + } + + if (resp_ie && status == WLAN_STATUS_SUCCESS) { + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.data.length = resp_ie_len; + wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); + } + + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.ap_addr.sa_family = ARPHRD_ETHER; + if (bssid && status == WLAN_STATUS_SUCCESS) + memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); + wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); + } +#endif + + if (status == WLAN_STATUS_SUCCESS && + wdev->sme_state == CFG80211_SME_IDLE) { + wdev->sme_state = CFG80211_SME_CONNECTED; + return; + } + + if (wdev->sme_state != CFG80211_SME_CONNECTING) + return; + + if (wdev->current_bss) { + cfg80211_unhold_bss(wdev->current_bss); + cfg80211_put_bss(&wdev->current_bss->pub); + wdev->current_bss = NULL; + } + + if (wdev->conn) + wdev->conn->state = CFG80211_CONN_IDLE; + + if (status == WLAN_STATUS_SUCCESS) { + bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, + wdev->ssid, wdev->ssid_len, + WLAN_CAPABILITY_ESS, + WLAN_CAPABILITY_ESS); + + if (WARN_ON(!bss)) + return; + + cfg80211_hold_bss(bss_from_pub(bss)); + wdev->current_bss = bss_from_pub(bss); + + wdev->sme_state = CFG80211_SME_CONNECTED; + } else { + wdev->sme_state = CFG80211_SME_IDLE; + kfree(wdev->conn); + wdev->conn = NULL; + } +} + +void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, + const u8 *req_ie, size_t req_ie_len, + const u8 *resp_ie, size_t resp_ie_len, + u16 status, gfp_t gfp) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + struct cfg80211_event *ev; + unsigned long flags; + + ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp); + if (!ev) + return; + + ev->type = EVENT_CONNECT_RESULT; + memcpy(ev->cr.bssid, bssid, ETH_ALEN); + ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev); + ev->cr.req_ie_len = req_ie_len; + memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len); + ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len; + ev->cr.resp_ie_len = resp_ie_len; + memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len); + ev->cr.status = status; + + spin_lock_irqsave(&wdev->event_lock, flags); + list_add_tail(&ev->list, &wdev->event_list); + spin_unlock_irqrestore(&wdev->event_lock, flags); + schedule_work(&rdev->event_work); +} +EXPORT_SYMBOL(cfg80211_connect_result); + +void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid, + const u8 *req_ie, size_t req_ie_len, + const u8 *resp_ie, size_t resp_ie_len) +{ + struct cfg80211_bss *bss; +#ifdef CONFIG_WIRELESS_EXT + union iwreq_data wrqu; +#endif + + ASSERT_WDEV_LOCK(wdev); + + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + return; + + if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) + return; + + /* internal error -- how did we get to CONNECTED w/o BSS? */ + if (WARN_ON(!wdev->current_bss)) { + return; + } + + cfg80211_unhold_bss(wdev->current_bss); + cfg80211_put_bss(&wdev->current_bss->pub); + wdev->current_bss = NULL; + + bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, + wdev->ssid, wdev->ssid_len, + WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); + + if (WARN_ON(!bss)) + return; + + cfg80211_hold_bss(bss_from_pub(bss)); + wdev->current_bss = bss_from_pub(bss); + + nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bssid, + req_ie, req_ie_len, resp_ie, resp_ie_len, + GFP_KERNEL); + +#ifdef CONFIG_WIRELESS_EXT + if (req_ie) { + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.data.length = req_ie_len; + wireless_send_event(wdev->netdev, IWEVASSOCRESPIE, + &wrqu, req_ie); + } + + if (resp_ie) { + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.data.length = resp_ie_len; + wireless_send_event(wdev->netdev, IWEVASSOCRESPIE, + &wrqu, resp_ie); + } + + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.ap_addr.sa_family = ARPHRD_ETHER; + memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); + wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL); +#endif +} + +void cfg80211_roamed(struct net_device *dev, const u8 *bssid, + const u8 *req_ie, size_t req_ie_len, + const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + struct cfg80211_event *ev; + unsigned long flags; + + ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp); + if (!ev) + return; + + ev->type = EVENT_ROAMED; + memcpy(ev->rm.bssid, bssid, ETH_ALEN); + ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev); + ev->rm.req_ie_len = req_ie_len; + memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len); + ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len; + ev->rm.resp_ie_len = resp_ie_len; + memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len); + + spin_lock_irqsave(&wdev->event_lock, flags); + list_add_tail(&ev->list, &wdev->event_list); + spin_unlock_irqrestore(&wdev->event_lock, flags); + schedule_work(&rdev->event_work); +} +EXPORT_SYMBOL(cfg80211_roamed); + +void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, + size_t ie_len, u16 reason, bool from_ap) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; +#ifdef CONFIG_WIRELESS_EXT + union iwreq_data wrqu; +#endif + + ASSERT_WDEV_LOCK(wdev); + + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + return; + + if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) + return; + + if (wdev->current_bss) { + cfg80211_unhold_bss(wdev->current_bss); + cfg80211_put_bss(&wdev->current_bss->pub); + } + + wdev->current_bss = NULL; + wdev->sme_state = CFG80211_SME_IDLE; + + if (wdev->conn) { + kfree(wdev->conn->ie); + wdev->conn->ie = NULL; + kfree(wdev->conn); + wdev->conn = NULL; + } + + nl80211_send_disconnected(wiphy_to_dev(wdev->wiphy), dev, + reason, ie, ie_len, from_ap); + +#ifdef CONFIG_WIRELESS_EXT + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.ap_addr.sa_family = ARPHRD_ETHER; + wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); +#endif +} + +void cfg80211_disconnected(struct net_device *dev, u16 reason, + u8 *ie, size_t ie_len, gfp_t gfp) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + struct cfg80211_event *ev; + unsigned long flags; + + ev = kzalloc(sizeof(*ev) + ie_len, gfp); + if (!ev) + return; + + ev->type = EVENT_DISCONNECTED; + ev->dc.ie = ((u8 *)ev) + sizeof(*ev); + ev->dc.ie_len = ie_len; + memcpy((void *)ev->dc.ie, ie, ie_len); + ev->dc.reason = reason; + + spin_lock_irqsave(&wdev->event_lock, flags); + list_add_tail(&ev->list, &wdev->event_list); + spin_unlock_irqrestore(&wdev->event_lock, flags); + schedule_work(&rdev->event_work); +} +EXPORT_SYMBOL(cfg80211_disconnected); + +int __cfg80211_connect(struct cfg80211_registered_device *rdev, + struct net_device *dev, + struct cfg80211_connect_params *connect) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + int err; + + ASSERT_WDEV_LOCK(wdev); + + if (wdev->sme_state != CFG80211_SME_IDLE) + return -EALREADY; + + if (!rdev->ops->connect) { + if (!rdev->ops->auth || !rdev->ops->assoc) + return -EOPNOTSUPP; + + if (WARN_ON(wdev->conn)) + return -EINPROGRESS; + + wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); + if (!wdev->conn) + return -ENOMEM; + + /* + * Copy all parameters, and treat explicitly IEs, BSSID, SSID. + */ + memcpy(&wdev->conn->params, connect, sizeof(*connect)); + if (connect->bssid) { + wdev->conn->params.bssid = wdev->conn->bssid; + memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN); + } + + if (connect->ie) { + wdev->conn->ie = kmemdup(connect->ie, connect->ie_len, + GFP_KERNEL); + wdev->conn->params.ie = wdev->conn->ie; + if (!wdev->conn->ie) { + kfree(wdev->conn); + wdev->conn = NULL; + return -ENOMEM; + } + } + + if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) { + wdev->conn->auto_auth = true; + /* start with open system ... should mostly work */ + wdev->conn->params.auth_type = + NL80211_AUTHTYPE_OPEN_SYSTEM; + } else { + wdev->conn->auto_auth = false; + } + + memcpy(wdev->ssid, connect->ssid, connect->ssid_len); + wdev->ssid_len = connect->ssid_len; + wdev->conn->params.ssid = wdev->ssid; + wdev->conn->params.ssid_len = connect->ssid_len; + + /* don't care about result -- but fill bssid & channel */ + if (!wdev->conn->params.bssid || !wdev->conn->params.channel) + cfg80211_get_conn_bss(wdev); + + wdev->sme_state = CFG80211_SME_CONNECTING; + + /* we're good if we have both BSSID and channel */ + if (wdev->conn->params.bssid && wdev->conn->params.channel) { + wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; + err = cfg80211_conn_do_work(wdev); + } else { + /* otherwise we'll need to scan for the AP first */ + err = cfg80211_conn_scan(wdev); + /* + * If we can't scan right now, then we need to scan again + * after the current scan finished, since the parameters + * changed (unless we find a good AP anyway). + */ + if (err == -EBUSY) { + err = 0; + wdev->conn->state = CFG80211_CONN_SCAN_AGAIN; + } + } + if (err) { + kfree(wdev->conn); + wdev->conn = NULL; + wdev->sme_state = CFG80211_SME_IDLE; + } + + return err; + } else { + wdev->sme_state = CFG80211_SME_CONNECTING; + err = rdev->ops->connect(&rdev->wiphy, dev, connect); + if (err) { + wdev->sme_state = CFG80211_SME_IDLE; + return err; + } + + memcpy(wdev->ssid, connect->ssid, connect->ssid_len); + wdev->ssid_len = connect->ssid_len; + + return 0; + } +} + +int cfg80211_connect(struct cfg80211_registered_device *rdev, + struct net_device *dev, + struct cfg80211_connect_params *connect) +{ + int err; + + wdev_lock(dev->ieee80211_ptr); + err = __cfg80211_connect(rdev, dev, connect); + wdev_unlock(dev->ieee80211_ptr); + + return err; +} + +int __cfg80211_disconnect(struct cfg80211_registered_device *rdev, + struct net_device *dev, u16 reason, bool wextev) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + int err; + + ASSERT_WDEV_LOCK(wdev); + + if (wdev->sme_state == CFG80211_SME_IDLE) + return -EINVAL; + + if (!rdev->ops->disconnect) { + if (!rdev->ops->deauth) + return -EOPNOTSUPP; + + /* was it connected by userspace SME? */ + if (!wdev->conn) { + cfg80211_mlme_down(rdev, dev); + return 0; + } + + if (wdev->sme_state == CFG80211_SME_CONNECTING && + (wdev->conn->state == CFG80211_CONN_SCANNING || + wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) { + wdev->sme_state = CFG80211_SME_IDLE; + kfree(wdev->conn); + wdev->conn = NULL; + return 0; + } + + /* wdev->conn->params.bssid must be set if > SCANNING */ + err = __cfg80211_mlme_deauth(rdev, dev, + wdev->conn->params.bssid, + NULL, 0, reason); + if (err) + return err; + } else { + err = rdev->ops->disconnect(&rdev->wiphy, dev, reason); + if (err) + return err; + } + + if (wdev->sme_state == CFG80211_SME_CONNECTED) + __cfg80211_disconnected(dev, NULL, 0, 0, false); + else if (wdev->sme_state == CFG80211_SME_CONNECTING) + __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0, + WLAN_STATUS_UNSPECIFIED_FAILURE, + wextev); + + return 0; +} + +int cfg80211_disconnect(struct cfg80211_registered_device *rdev, + struct net_device *dev, + u16 reason, bool wextev) +{ + int err; + + wdev_lock(dev->ieee80211_ptr); + err = __cfg80211_disconnect(rdev, dev, reason, wextev); + wdev_unlock(dev->ieee80211_ptr); + + return err; +} + +void cfg80211_sme_disassoc(struct net_device *dev, int idx) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + u8 bssid[ETH_ALEN]; + + ASSERT_WDEV_LOCK(wdev); + + if (!wdev->conn) + return; + + if (wdev->conn->state == CFG80211_CONN_IDLE) + return; + + /* + * Ok, so the association was made by this SME -- we don't + * want it any more so deauthenticate too. + */ + + if (!wdev->auth_bsses[idx]) + return; + + memcpy(bssid, wdev->auth_bsses[idx]->pub.bssid, ETH_ALEN); + if (cfg80211_mlme_deauth(rdev, dev, bssid, + NULL, 0, WLAN_REASON_DEAUTH_LEAVING)) { + /* whatever -- assume gone anyway */ + cfg80211_unhold_bss(wdev->auth_bsses[idx]); + cfg80211_put_bss(&wdev->auth_bsses[idx]->pub); + wdev->auth_bsses[idx] = NULL; + } +} |