Commit 488b366a authored by Alexander Bondar's avatar Alexander Bondar Committed by Johannes Berg
Browse files

mac80211: add driver callback for per-interface multicast filter 



Some devices have multicast filter capability for each individual
virtual interface rather than just a global one. Add an interface
specific driver callback allowing such drivers to configure this.

Signed-off-by: default avatarAlexander Bondar <alexander.bondar@intel.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 511044ea

include/net/mac80211.h

+7 −0
Original line number Diff line number Diff line
@@ -2259,6 +2259,9 @@ enum ieee80211_roc_type { 
 *	See the section "Frame filtering" for more information.

 *	This callback must be implemented and can sleep.

 *

 * @set_multicast_list: Configure the device's interface specific RX multicast

 *	filter. This callback is optional. This callback must be atomic.

 *

 * @set_tim: Set TIM bit. mac80211 calls this function when a TIM bit

 * 	must be set or cleared for a given STA. Must be atomic.

 *
@@ -2605,6 +2608,10 @@ struct ieee80211_ops { 
				 unsigned int changed_flags,

				 unsigned int *total_flags,

				 u64 multicast);

	void (*set_multicast_list)(struct ieee80211_hw *hw,

				   struct ieee80211_vif *vif, bool allmulti,

				   struct netdev_hw_addr_list *mc_list);



	int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta,

		       bool set);

	int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd,

net/mac80211/driver-ops.h

+16 −0
Original line number Diff line number Diff line
@@ -241,6 +241,22 @@ static inline u64 drv_prepare_multicast(struct ieee80211_local *local, 
	return ret;

}



static inline void drv_set_multicast_list(struct ieee80211_local *local,

					  struct ieee80211_sub_if_data *sdata,

					  struct netdev_hw_addr_list *mc_list)

{

	bool allmulti = sdata->flags & IEEE80211_SDATA_ALLMULTI;



	trace_drv_set_multicast_list(local, sdata, mc_list->count);



	check_sdata_in_driver(sdata);



	if (local->ops->set_multicast_list)

		local->ops->set_multicast_list(&local->hw, &sdata->vif,

					       allmulti, mc_list);

	trace_drv_return_void(local);

}



static inline void drv_configure_filter(struct ieee80211_local *local,

					unsigned int changed_flags,

					unsigned int *total_flags,

net/mac80211/iface.c

+11 −0
Original line number Diff line number Diff line
@@ -919,6 +919,17 @@ static void ieee80211_set_multicast_list(struct net_device *dev) 
			atomic_dec(&local->iff_promiscs);

		sdata->flags ^= IEEE80211_SDATA_PROMISC;

	}



	/*

	 * TODO: If somebody needs this on AP interfaces,

	 *	 it can be enabled easily but multicast

	 *	 addresses from VLANs need to be synced.

	 */

	if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&

	    sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&

	    sdata->vif.type != NL80211_IFTYPE_AP)

		drv_set_multicast_list(local, sdata, &dev->mc);



	spin_lock_bh(&local->filter_lock);

	__hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len);

	spin_unlock_bh(&local->filter_lock);

net/mac80211/trace.h

+24 −0
Original line number Diff line number Diff line
@@ -431,6 +431,30 @@ TRACE_EVENT(drv_prepare_multicast, 
	)

);



TRACE_EVENT(drv_set_multicast_list,

	TP_PROTO(struct ieee80211_local *local,

		 struct ieee80211_sub_if_data *sdata, int mc_count),



	TP_ARGS(local, sdata, mc_count),



	TP_STRUCT__entry(

		LOCAL_ENTRY

		__field(bool, allmulti)

		__field(int, mc_count)

	),



	TP_fast_assign(

		LOCAL_ASSIGN;

		__entry->allmulti = sdata->flags & IEEE80211_SDATA_ALLMULTI;

		__entry->mc_count = mc_count;

	),



	TP_printk(

		LOCAL_PR_FMT " configure mc filter, count=%d, allmulti=%d",

		LOCAL_PR_ARG, __entry->mc_count, __entry->allmulti

	)

);



TRACE_EVENT(drv_configure_filter,

	TP_PROTO(struct ieee80211_local *local,

		 unsigned int changed_flags,

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