STRUCT IEEE80211_STA(9)             Advanced driver interface             STRUCT IEEE80211_STA(9)



NAME
       struct_ieee80211_sta - station table entry

SYNOPSIS
       struct ieee80211_sta {
         u32 supp_rates[NUM_NL80211_BANDS];
         u8 addr[ETH_ALEN];
         u16 aid;
         struct ieee80211_sta_ht_cap ht_cap;
         struct ieee80211_sta_vht_cap vht_cap;
         bool wme;
         u8 uapsd_queues;
         u8 max_sp;
         u8 rx_nss;
         enum ieee80211_sta_rx_bandwidth bandwidth;
         enum ieee80211_smps_mode smps_mode;
         struct ieee80211_sta_rates __rcu * rates;
         bool tdls;
         bool tdls_initiator;
         bool mfp;
         u8 max_amsdu_subframes;
         u16 max_amsdu_len;
         bool support_p2p_ps;
         u16 max_rc_amsdu_len;
         struct ieee80211_txq * txq[IEEE80211_NUM_TIDS];
         u8 drv_priv[0];
       };

MEMBERS
       supp_rates[NUM_NL80211_BANDS]
           Bitmap of supported rates (per band)

       addr[ETH_ALEN]
           MAC address

       aid
           AID we assigned to the station if we're an AP

       ht_cap
           HT capabilities of this STA; restricted to our own capabilities

       vht_cap
           VHT capabilities of this STA; restricted to our own capabilities

       wme
           indicates whether the STA supports QoS/WME (if local devices does, otherwise always
           false)

       uapsd_queues
           bitmap of queues configured for uapsd. Only valid if wme is supported.

       max_sp
           max Service Period. Only valid if wme is supported.

       rx_nss
           in HT/VHT, the maximum number of spatial streams the station can receive at the
           moment, changed by operating mode notifications and capabilities. The value is only
           valid after the station moves to associated state.

       bandwidth
           current bandwidth the station can receive with

       smps_mode
           current SMPS mode (off, static or dynamic)

       rates
           rate control selection table

       tdls
           indicates whether the STA is a TDLS peer

       tdls_initiator
           indicates the STA is an initiator of the TDLS link. Only valid if the STA is a TDLS
           peer in the first place.

       mfp
           indicates whether the STA uses management frame protection or not.

       max_amsdu_subframes
           indicates the maximal number of MSDUs in a single A-MSDU. Taken from the Extended
           Capabilities element. 0 means unlimited.

       max_amsdu_len
           indicates the maximal length of an A-MSDU in bytes. This field is always valid for
           packets with a VHT preamble. For packets with a HT preamble, additional limits apply:
           + If the skb is transmitted as part of a BA agreement, the A-MSDU maximal size is
           min(max_amsdu_len, 4065) bytes. + If the skb is not part of a BA aggreement, the
           A-MSDU maximal size is min(max_amsdu_len, 7935) bytes. Both additional HT limits must
           be enforced by the low level driver. This is defined by the spec (IEEE 802.11-2012
           section 8.3.2.2 NOTE 2).

       support_p2p_ps
           indicates whether the STA supports P2P PS mechanism or not.

       max_rc_amsdu_len
           Maximum A-MSDU size in bytes recommended by rate control.

       txq[IEEE80211_NUM_TIDS]
           per-TID data TX queues (if driver uses the TXQ abstraction)

       drv_priv[0]
           data area for driver use, will always be aligned to sizeof(void *), size is determined
           in hw information.

DESCRIPTION
       A station table entry represents a station we are possibly communicating with. Since
       stations are RCU-managed in mac80211, any ieee80211_sta pointer you get access to must
       either be protected by rcu_read_lock explicitly or implicitly, or you must take good care
       to not use such a pointer after a call to your sta_remove callback that removed it.

AUTHOR
       Johannes Berg <johannes AT sipsolutions.net>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   STRUCT IEEE80211_STA(9)