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mac80211: add pre_channel_switch driver operation

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Some drivers may need to prepare for a channel switch also when it is
initiated from the remote side (eg. station, P2P client).  To make
this possible, add a generic callback that can be called for all
interface types.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Luciano Coelho
2014-10-08 09:48:37 +03:00
committed by Johannes Berg
parent e9a21949b7
commit 6d027bcc8a
5 changed files with 86 additions and 8 deletions
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7
include/net/mac80211.h
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@@ -2832,6 +2832,10 @@ enum ieee80211_roc_type {
* transmitted and then call ieee80211_csa_finish().
* If the CSA count starts as zero or 1, this function will not be called,
* since there won't be any time to beacon before the switch anyway.
* @pre_channel_switch: This is an optional callback that is called
* before a channel switch procedure is started (ie. when a STA
* gets a CSA or an userspace initiated channel-switch), allowing
* the driver to prepare for the channel switch.
*
* @join_ibss: Join an IBSS (on an IBSS interface); this is called after all
* information in bss_conf is set up and the beacon can be retrieved. A
@@ -3038,6 +3042,9 @@ struct ieee80211_ops {
void (*channel_switch_beacon)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_chan_def *chandef);
int (*pre_channel_switch)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_channel_switch *ch_switch);
int (*join_ibss)(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
void (*leave_ibss)(struct ieee80211_hw *hw, struct ieee80211_vif *vif);