diff options
| author |   Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de> | 2013-07-11 16:09:06 +0200 |
|---|---|---|
| committer |   Johannes Berg <johannes.berg@intel.com> | 2013-08-01 18:30:33 +0200 |
| commit | 73da7d5bab79ad7e16ff44d67c3fe8b9c0b33e5b (patch) | |
| tree | cb4eee7b96aae1d31a4841167a3f36c638bd0a11 /net/mac80211/iface.c | |
| parent | nl80211/cfg80211: add channel switch command (diff) | |
| download | linux-dev-73da7d5bab79ad7e16ff44d67c3fe8b9c0b33e5b.tar.xz linux-dev-73da7d5bab79ad7e16ff44d67c3fe8b9c0b33e5b.zip | |
mac80211: add channel switch command and beacon callbacks
The count field in CSA must be decremented with each beacon
transmitted. This patch implements the functionality for drivers
using ieee80211_beacon_get(). Other drivers must call back manually
after reaching count == 0.
This patch also contains the handling and finish worker for the channel
switch command, and mac80211/chanctx code to allow to change a channel
definition of an active channel context.
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
[small cleanups, catch identical chandef]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/iface.c')
| -rw-r--r-- | net/mac80211/iface.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 4c41c11958c8..7ca534bf4cea 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -274,6 +274,12 @@ static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, if (iftype == NL80211_IFTYPE_ADHOC && nsdata->vif.type == NL80211_IFTYPE_ADHOC) return -EBUSY; + /* + * will not add another interface while any channel + * switch is active. + */ + if (nsdata->vif.csa_active) + return -EBUSY; /* * The remaining checks are only performed for interfaces @@ -804,6 +810,8 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, cancel_work_sync(&local->dynamic_ps_enable_work); cancel_work_sync(&sdata->recalc_smps); + sdata->vif.csa_active = false; + cancel_work_sync(&sdata->csa_finalize_work); cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); @@ -1267,6 +1275,7 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, skb_queue_head_init(&sdata->skb_queue); INIT_WORK(&sdata->work, ieee80211_iface_work); INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); + INIT_WORK(&sdata->csa_finalize_work, ieee80211_csa_finalize_work); switch (type) { case NL80211_IFTYPE_P2P_GO: |