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authorLuciano Coelho <luciano.coelho@intel.com>2014-10-08 10:48:37 +0400
committerJohannes Berg <johannes.berg@intel.com>2014-10-09 13:30:08 +0400
commit6d027bcc8a4e2518ae825b0ff3dd069ab1abfe96 (patch)
tree798d3bfaf90f5f653905da6cb3be864f2a7a0443 /include/net/mac80211.h
parente9a21949b79414dda42a017855b288901c07e613 (diff)
downloadlinux-6d027bcc8a4e2518ae825b0ff3dd069ab1abfe96.tar.xz
mac80211: add pre_channel_switch driver operation
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>
Diffstat (limited to 'include/net/mac80211.h')
-rw-r--r--include/net/mac80211.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index ec0a5b07055b..19e4159ce3a3 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -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);