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mac80211: Process multicast RX registration for Action frames

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Convert a user space registration for processing multicast Action frames
(NL80211_CMD_REGISTER_FRAME with NL80211_ATTR_RECEIVE_MULTICAST) to a
new enum ieee80211_filter_flags bit FIF_MCAST_ACTION so that drivers can
update their RX filter parameters appropriately, if needed.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20200421144815.19175-1-jouni@codeaurora.org
[rename variables to rx_mcast_action_reg indicating action frames only]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Jouni Malinen 2020-04-21 17:48:15 +03:00 committed by Johannes Berg
parent 155d7c7338
commit 873b1cf611
4 changed files with 21 additions and 3 deletions
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6
include/net/mac80211.h
View File

@ -1620,6 +1620,8 @@ enum ieee80211_vif_flags {
* monitor interface (if that is requested.)
* @probe_req_reg: probe requests should be reported to mac80211 for this
* interface.
* @rx_mcast_action_reg: multicast Action frames should be reported to mac80211
* for this interface.
* @drv_priv: data area for driver use, will always be aligned to
* sizeof(void \*).
* @txq: the multicast data TX queue (if driver uses the TXQ abstraction)
@ -1648,6 +1650,7 @@ struct ieee80211_vif {
#endif
bool probe_req_reg;
bool rx_mcast_action_reg;
bool txqs_stopped[IEEE80211_NUM_ACS];
@ -3091,6 +3094,8 @@ void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb);
* @FIF_PSPOLL: pass PS Poll frames
*
* @FIF_PROBE_REQ: pass probe request frames
*
* @FIF_MCAST_ACTION: pass multicast Action frames
*/
enum ieee80211_filter_flags {
FIF_ALLMULTI = 1<<1,
@ -3101,6 +3106,7 @@ enum ieee80211_filter_flags {
FIF_OTHER_BSS = 1<<6,
FIF_PSPOLL = 1<<7,
FIF_PROBE_REQ = 1<<8,
FIF_MCAST_ACTION = 1<<9,
};
/**

14
net/mac80211/cfg.c
View File

@ -3406,15 +3406,23 @@ ieee80211_update_mgmt_frame_registrations(struct wiphy *wiphy,
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
u32 preq_mask = BIT(IEEE80211_STYPE_PROBE_REQ >> 4);
u32 action_mask = BIT(IEEE80211_STYPE_ACTION >> 4);
bool global_change, intf_change;
global_change =
local->probe_req_reg != !!(upd->global_stypes & preq_mask);
(local->probe_req_reg != !!(upd->global_stypes & preq_mask)) ||
(local->rx_mcast_action_reg !=
!!(upd->global_mcast_stypes & action_mask));
local->probe_req_reg = upd->global_stypes & preq_mask;
local->rx_mcast_action_reg = upd->global_mcast_stypes & action_mask;
intf_change = sdata->vif.probe_req_reg !=
!!(upd->interface_stypes & preq_mask);
intf_change = (sdata->vif.probe_req_reg !=
!!(upd->interface_stypes & preq_mask)) ||
(sdata->vif.rx_mcast_action_reg !=
!!(upd->interface_mcast_stypes & action_mask));
sdata->vif.probe_req_reg = upd->interface_stypes & preq_mask;
sdata->vif.rx_mcast_action_reg =
upd->interface_mcast_stypes & action_mask;
if (!local->open_count)
return;

1
net/mac80211/ieee80211_i.h
View File

@ -1168,6 +1168,7 @@ struct ieee80211_local {
int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
fif_probe_req;
bool probe_req_reg;
bool rx_mcast_action_reg;
unsigned int filter_flags; /* FIF_* */
bool wiphy_ciphers_allocated;

3
net/mac80211/main.c
View File

@ -64,6 +64,9 @@ void ieee80211_configure_filter(struct ieee80211_local *local)
if (local->fif_pspoll)
new_flags |= FIF_PSPOLL;
if (local->rx_mcast_action_reg)
new_flags |= FIF_MCAST_ACTION;
spin_lock_bh(&local->filter_lock);
changed_flags = local->filter_flags ^ new_flags;