diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 7eae46ccec01a4f8c2800c8b459ac5a370ed93e9..0631230b01eb51673fb59f08af376c9f6234f984 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -4756,6 +4756,21 @@ int cfg80211_iter_combinations(struct wiphy *wiphy, void *data), void *data); +/* + * cfg80211_stop_iface - trigger interface disconnection + * + * @wiphy: the wiphy + * @wdev: wireless device + * @gfp: context flags + * + * Trigger interface to be stopped as if AP was stopped, IBSS/mesh left, STA + * disconnected. + * + * Note: This doesn't need any locks and is asynchronous. + */ +void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, + gfp_t gfp); + /* Logging, debugging and troubleshooting/diagnostic helpers. */ /* wiphy_printk helpers, similar to dev_printk */ diff --git a/net/wireless/ap.c b/net/wireless/ap.c index 3e02ade508d8804d4158a03ad5de474d64bf7594..bdad1f951561b3d8b7c75d8992e1c3c1a623f146 100644 --- a/net/wireless/ap.c +++ b/net/wireless/ap.c @@ -6,8 +6,8 @@ #include "rdev-ops.h" -static int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev, - struct net_device *dev, bool notify) +int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev, + struct net_device *dev, bool notify) { struct wireless_dev *wdev = dev->ieee80211_ptr; int err; diff --git a/net/wireless/core.c b/net/wireless/core.c index f509da4d9be98ff975d893b883423c1f22733616..7e023b74f009874f7160825a7b223ea78c9fe5f0 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -792,23 +792,23 @@ void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, rdev->num_running_monitor_ifaces += num; } -void cfg80211_leave(struct cfg80211_registered_device *rdev, - struct wireless_dev *wdev) +void __cfg80211_leave(struct cfg80211_registered_device *rdev, + struct wireless_dev *wdev) { struct net_device *dev = wdev->netdev; ASSERT_RTNL(); + ASSERT_WDEV_LOCK(wdev); switch (wdev->iftype) { case NL80211_IFTYPE_ADHOC: - cfg80211_leave_ibss(rdev, dev, true); + __cfg80211_leave_ibss(rdev, dev, true); break; case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_STATION: if (rdev->sched_scan_req && dev == rdev->sched_scan_req->dev) __cfg80211_stop_sched_scan(rdev, false); - wdev_lock(wdev); #ifdef CONFIG_CFG80211_WEXT kfree(wdev->wext.ie); wdev->wext.ie = NULL; @@ -817,20 +817,49 @@ void cfg80211_leave(struct cfg80211_registered_device *rdev, #endif cfg80211_disconnect(rdev, dev, WLAN_REASON_DEAUTH_LEAVING, true); - wdev_unlock(wdev); break; case NL80211_IFTYPE_MESH_POINT: - cfg80211_leave_mesh(rdev, dev); + __cfg80211_leave_mesh(rdev, dev); break; case NL80211_IFTYPE_AP: case NL80211_IFTYPE_P2P_GO: - cfg80211_stop_ap(rdev, dev, true); + __cfg80211_stop_ap(rdev, dev, true); break; default: break; } } +void cfg80211_leave(struct cfg80211_registered_device *rdev, + struct wireless_dev *wdev) +{ + wdev_lock(wdev); + __cfg80211_leave(rdev, wdev); + wdev_unlock(wdev); +} + +void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, + gfp_t gfp) +{ + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); + struct cfg80211_event *ev; + unsigned long flags; + + trace_cfg80211_stop_iface(wiphy, wdev); + + ev = kzalloc(sizeof(*ev), gfp); + if (!ev) + return; + + ev->type = EVENT_STOPPED; + + spin_lock_irqsave(&wdev->event_lock, flags); + list_add_tail(&ev->list, &wdev->event_list); + spin_unlock_irqrestore(&wdev->event_lock, flags); + queue_work(cfg80211_wq, &rdev->event_work); +} +EXPORT_SYMBOL(cfg80211_stop_iface); + static int cfg80211_netdev_notifier_call(struct notifier_block *nb, unsigned long state, void *ptr) { diff --git a/net/wireless/core.h b/net/wireless/core.h index 681b8fa4355b09bdc78796388986deeb9022ea89..e9afbf10e756bd3a1ec81a6b6b7aa229d0688be7 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -185,6 +185,7 @@ enum cfg80211_event_type { EVENT_ROAMED, EVENT_DISCONNECTED, EVENT_IBSS_JOINED, + EVENT_STOPPED, }; struct cfg80211_event { @@ -281,6 +282,8 @@ int cfg80211_join_mesh(struct cfg80211_registered_device *rdev, struct net_device *dev, struct mesh_setup *setup, const struct mesh_config *conf); +int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, + struct net_device *dev); int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, struct net_device *dev); int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev, @@ -288,6 +291,8 @@ int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev, struct cfg80211_chan_def *chandef); /* AP */ +int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev, + struct net_device *dev, bool notify); int cfg80211_stop_ap(struct cfg80211_registered_device *rdev, struct net_device *dev, bool notify); @@ -441,6 +446,8 @@ int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev, void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, enum nl80211_iftype iftype, int num); +void __cfg80211_leave(struct cfg80211_registered_device *rdev, + struct wireless_dev *wdev); void cfg80211_leave(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev); diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c index 3ddfb7cd335e6a8740109e51355070310db6ecb3..092300b30c372ddc03115638a83bc65ce7a49997 100644 --- a/net/wireless/mesh.c +++ b/net/wireless/mesh.c @@ -238,8 +238,8 @@ int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev, return 0; } -static int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, - struct net_device *dev) +int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, + struct net_device *dev) { struct wireless_dev *wdev = dev->ieee80211_ptr; int err; diff --git a/net/wireless/trace.h b/net/wireless/trace.h index f3c13ff4d04c8742c028126970938233da10b1d2..cdfbb00e1b37bd186dbb6dd4eac87bc288960886 100644 --- a/net/wireless/trace.h +++ b/net/wireless/trace.h @@ -2636,6 +2636,21 @@ TRACE_EVENT(cfg80211_ft_event, WIPHY_PR_ARG, NETDEV_PR_ARG, MAC_PR_ARG(target_ap)) ); +TRACE_EVENT(cfg80211_stop_iface, + TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev), + TP_ARGS(wiphy, wdev), + TP_STRUCT__entry( + WIPHY_ENTRY + WDEV_ENTRY + ), + TP_fast_assign( + WIPHY_ASSIGN; + WDEV_ASSIGN; + ), + TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT, + WIPHY_PR_ARG, WDEV_PR_ARG) +); + #endif /* !__RDEV_OPS_TRACE || TRACE_HEADER_MULTI_READ */ #undef TRACE_INCLUDE_PATH diff --git a/net/wireless/util.c b/net/wireless/util.c index 7c47fa07b276f90ad870cb9789aa8c5b8fb63521..a756429b3a0a0f1738818ef7b2abe67435d21032 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -839,6 +839,9 @@ void cfg80211_process_wdev_events(struct wireless_dev *wdev) __cfg80211_ibss_joined(wdev->netdev, ev->ij.bssid, ev->ij.channel); break; + case EVENT_STOPPED: + __cfg80211_leave(wiphy_to_rdev(wdev->wiphy), wdev); + break; } wdev_unlock(wdev);