diff options
Diffstat (limited to 'net/mac80211/driver-ops.c')
| -rw-r--r-- | net/mac80211/driver-ops.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c index a1d54318f16c..ca1fe5576103 100644 --- a/net/mac80211/driver-ops.c +++ b/net/mac80211/driver-ops.c @@ -1,4 +1,6 @@ /* + * Copyright 2015 Intel Deutschland GmbH + * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. @@ -8,6 +10,48 @@ #include "trace.h" #include "driver-ops.h" +int drv_start(struct ieee80211_local *local) +{ + int ret; + + might_sleep(); + + if (WARN_ON(local->started)) + return -EALREADY; + + trace_drv_start(local); + local->started = true; + /* allow rx frames */ + smp_mb(); + ret = local->ops->start(&local->hw); + trace_drv_return_int(local, ret); + + if (ret) + local->started = false; + + return ret; +} + +void drv_stop(struct ieee80211_local *local) +{ + might_sleep(); + + if (WARN_ON(!local->started)) + return; + + trace_drv_stop(local); + local->ops->stop(&local->hw); + trace_drv_return_void(local); + + /* sync away all work on the tasklet before clearing started */ + tasklet_disable(&local->tasklet); + tasklet_enable(&local->tasklet); + + barrier(); + + local->started = false; +} + int drv_add_interface(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata) { @@ -192,6 +236,8 @@ int drv_switch_vif_chanctx(struct ieee80211_local *local, int ret = 0; int i; + might_sleep(); + if (!local->ops->switch_vif_chanctx) return -EOPNOTSUPP; |