1. 23 Apr, 2022 13 commits
  2. 13 Apr, 2022 4 commits
  3. 12 Apr, 2022 22 commits
  4. 11 Apr, 2022 1 commit
    • Sriram R's avatar
      mac80211: prepare sta handling for MLO support · 046d2e7c
      Sriram R authored
      Currently in mac80211 each STA object is represented
      using sta_info datastructure with the associated
      STA specific information and drivers access ieee80211_sta
      part of it.
      
      With MLO (Multi Link Operation) support being added
      in 802.11be standard, though the association is logically
      with a single Multi Link capable STA, at the physical level
      communication can happen via different advertised
      links (uniquely identified by Channel, operating class,
      BSSID) and hence the need to handle multiple link
      STA parameters within a composite sta_info object
      called the MLD STA. The different link STA part of
      MLD STA are identified using the link address which can
      be same or different as the MLD STA address and unique
      link id based on the link vif.
      
      To support extension of such a model, the sta_info
      datastructure is modified to hold multiple link STA
      objects with link specific params currently within
      sta_info moved to this new structure. Similarly this is
      done for ieee80211_sta as well which will be accessed
      within mac80211 as well as by drivers, hence trivial
      driver changes are expected to support this.
      
      For current non MLO supported drivers, only one link STA
      is present and link information is accessed via 'deflink'
      member.
      
      For MLO drivers, we still need to define the APIs etc. to
      get the correct link ID and access the correct part of
      the station info.
      
      Currently in mac80211, all link STA info are accessed directly
      via deflink. These will be updated to access via link pointers
      indexed by link id with MLO support patches, with link id
      being 0 for non MLO supported cases.
      
      Except for couple of macro related changes, below spatch takes
      care of updating mac80211 and driver code to access to the
      link STA info via deflink.
      
        @ieee80211_sta@
        struct ieee80211_sta *s;
        struct sta_info *si;
        identifier var = {supp_rates, ht_cap, vht_cap, he_cap, he_6ghz_capa, eht_cap, rx_nss, bandwidth, txpwr};
        @@
      
        (
          s->
        -    var
        +    deflink.var
        |
         si->sta.
        -    var
        +    deflink.var
        )
      
        @sta_info@
        struct sta_info *si;
        identifier var = {gtk, pcpu_rx_stats, rx_stats, rx_stats_avg, status_stats, tx_stats, cur_max_bandwidth};
        @@
      
        (
          si->
        -    var
        +    deflink.var
        )
      Signed-off-by: default avatarSriram R <quic_srirrama@quicinc.com>
      Link: https://lore.kernel.org/r/1649086883-13246-1-git-send-email-quic_srirrama@quicinc.com
      [remove MLO-drivers notes from commit message, not clear yet; run spatch]
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      046d2e7c