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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: Alexander Bondar <alexander.bondar@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Alexander Bondar 2013-02-11 14:56:29 +02:00 committed by Johannes Berg
parent 511044ea0b
commit 488b366a45
4 changed files with 58 additions and 0 deletions
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7
include/net/mac80211.h
View File

@ -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,

16
net/mac80211/driver-ops.h
View File

@ -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,

11
net/mac80211/iface.c
View File

@ -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);

24
net/mac80211/trace.h
View File

@ -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,