mac80211: process and save VHT MU-MIMO group frame

The Group ID Management frame is an Action frame of
category VHT. It is transmitted by the AP to assign
or change the user position of a STA for one or more
group IDs.
Process and save the group membership data. Notify
underlying driver of changes.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 7c30faff245f..8da483b2c067 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -298,6 +298,7 @@ struct ieee80211_vif_chanctx_switch {
  *      note that this is only called when it changes after the channel
  *      context had been assigned.
  * @BSS_CHANGED_OCB: OCB join status changed
+ * @BSS_CHANGED_MU_GROUPS: VHT MU-MIMO group id or user position changed
  */
 enum ieee80211_bss_change {
         BSS_CHANGED_ASSOC               = 1<<0,
@@ -323,6 +324,7 @@ enum ieee80211_bss_change {
         BSS_CHANGED_BEACON_INFO         = 1<<20,
         BSS_CHANGED_BANDWIDTH           = 1<<21,
         BSS_CHANGED_OCB                 = 1<<22,
+        BSS_CHANGED_MU_GROUPS           = 1<<23,
 
         /* when adding here, make sure to change ieee80211_reconfig */
 };
@@ -436,6 +438,19 @@ struct ieee80211_event {
 };
 
 /**
+ * struct ieee80211_mu_group_data - STA's VHT MU-MIMO group data
+ *
+ * This structure describes the group id data of VHT MU-MIMO
+ *
+ * @membership: 64 bits array - a bit is set if station is member of the group
+ * @position: 2 bits per group id indicating the position in the group
+ */
+struct ieee80211_mu_group_data {
+        u8 membership[WLAN_MEMBERSHIP_LEN];
+        u8 position[WLAN_USER_POSITION_LEN];
+};
+
+/**
  * struct ieee80211_bss_conf - holds the BSS's changing parameters
  *
  * This structure keeps information about a BSS (and an association
@@ -477,6 +492,7 @@ struct ieee80211_event {
  * @enable_beacon: whether beaconing should be enabled or not
  * @chandef: Channel definition for this BSS -- the hardware might be
  *      configured a higher bandwidth than this BSS uses, for example.
+ * @mu_group: VHT MU-MIMO group membership data
  * @ht_operation_mode: HT operation mode like in &struct ieee80211_ht_operation.
  *      This field is only valid when the channel is a wide HT/VHT channel.
  *      Note that with TDLS this can be the case (channel is HT, protection must
@@ -535,6 +551,7 @@ struct ieee80211_bss_conf {
         s32 cqm_rssi_thold;
         u32 cqm_rssi_hyst;
         struct cfg80211_chan_def chandef;
+        struct ieee80211_mu_group_data mu_group;
         __be32 arp_addr_list[IEEE80211_BSS_ARP_ADDR_LIST_LEN];
         int arp_addr_cnt;
         bool qos;