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mac80211: introduce TDLS channel switch ops

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Implement the cfg80211 TDLS channel switch ops and introduce new mac80211
ones for low-level drivers.
Verify low-level driver support for the new ops when using the relevant
wiphy feature bit. Also verify the peer supports channel switching before
passing the command down.

Add a new STA flag to track the off-channel state with the TDLS peer and
make sure to cancel the channel-switch if the peer STA is unexpectedly
removed.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Arik Nemtsov
2014-11-09 18:50:19 +02:00
committed by Johannes Berg
parent 5383758443
commit a7a6bdd067
10 changed files with 381 additions and 5 deletions
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41
net/mac80211/driver-ops.h
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@@ -1296,4 +1296,45 @@ static inline int drv_get_txpower(struct ieee80211_local *local,
return ret;
}
static inline int
drv_tdls_channel_switch(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta, u8 oper_class,
struct cfg80211_chan_def *chandef,
struct sk_buff *tmpl_skb, u32 ch_sw_tm_ie)
{
int ret;
might_sleep();
if (!check_sdata_in_driver(sdata))
return -EIO;
if (!local->ops->tdls_channel_switch)
return -EOPNOTSUPP;
trace_drv_tdls_channel_switch(local, sdata, sta, oper_class, chandef);
ret = local->ops->tdls_channel_switch(&local->hw, &sdata->vif, sta,
oper_class, chandef, tmpl_skb,
ch_sw_tm_ie);
trace_drv_return_int(local, ret);
return ret;
}
static inline void
drv_tdls_cancel_channel_switch(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta)
{
might_sleep();
if (!check_sdata_in_driver(sdata))
return;
if (!local->ops->tdls_cancel_channel_switch)
return;
trace_drv_tdls_cancel_channel_switch(local, sdata, sta);
local->ops->tdls_cancel_channel_switch(&local->hw, &sdata->vif, sta);
trace_drv_return_void(local);
}
#endif /* __MAC80211_DRIVER_OPS */