package/kernel/mac80211/patches/subsys/348-v6.5-wifi-mac80211-implement-proper-AP-MLD-HW-restart.patch

   1 From 61403414e1719f929386dda8fb954bb302628ef3 Mon Sep 17 00:00:00 2001
   2 From: Johannes Berg <johannes.berg@intel.com>
   3 Date: Thu, 4 May 2023 16:45:11 +0300
   4 Subject: [PATCH] wifi: mac80211: implement proper AP MLD HW restart
   5
   6 Previously, I didn't implement restarting here at all if the
   7 interface is an MLD, so it only worked for non-MLO. Add the
   8 needed code to restart an AP MLD correctly.
   9
  10 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
  11 Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
  12 Link: https://lore.kernel.org/r/20230504134511.828474-12-gregory.greenman@intel.com
  13 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
  14 ---
  15  net/mac80211/util.c | 44 +++++++++++++++++++++++++++++++++++++++++++-
  16  1 file changed, 43 insertions(+), 1 deletion(-)
  17
  18 --- a/net/mac80211/util.c
  19 +++ b/net/mac80211/util.c
  20 @@ -2344,6 +2344,35 @@ static int ieee80211_reconfig_nan(struct
  21         return 0;
  22  }
  23
  24 +static void ieee80211_reconfig_ap_links(struct ieee80211_local *local,
  25 +                                       struct ieee80211_sub_if_data *sdata,
  26 +                                       u32 changed)
  27 +{
  28 +       int link_id;
  29 +
  30 +       for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
  31 +               struct ieee80211_link_data *link;
  32 +
  33 +               if (!(sdata->vif.active_links & BIT(link_id)))
  34 +                       continue;
  35 +
  36 +               link = sdata_dereference(sdata->link[link_id], sdata);
  37 +               if (!link)
  38 +                       continue;
  39 +
  40 +               if (rcu_access_pointer(link->u.ap.beacon))
  41 +                       drv_start_ap(local, sdata, link->conf);
  42 +
  43 +               if (!link->conf->enable_beacon)
  44 +                       continue;
  45 +
  46 +               changed |= BSS_CHANGED_BEACON |
  47 +                          BSS_CHANGED_BEACON_ENABLED;
  48 +
  49 +               ieee80211_link_info_change_notify(sdata, link, changed);
  50 +       }
  51 +}
  52 +
  53  int ieee80211_reconfig(struct ieee80211_local *local)
  54  {
  55         struct ieee80211_hw *hw = &local->hw;
  56 @@ -2606,7 +2635,13 @@ int ieee80211_reconfig(struct ieee80211_
  57                         changed |= BSS_CHANGED_IBSS;
  58                         fallthrough;
  59                 case NL80211_IFTYPE_AP:
  60 -                       changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
  61 +                       changed |= BSS_CHANGED_P2P_PS;
  62 +
  63 +                       if (sdata->vif.valid_links)
  64 +                               ieee80211_vif_cfg_change_notify(sdata,
  65 +                                                               BSS_CHANGED_SSID);
  66 +                       else
  67 +                               changed |= BSS_CHANGED_SSID;
  68
  69                         if (sdata->vif.bss_conf.ftm_responder == 1 &&
  70                             wiphy_ext_feature_isset(sdata->local->hw.wiphy,
  71 @@ -2616,6 +2651,13 @@ int ieee80211_reconfig(struct ieee80211_
  72                         if (sdata->vif.type == NL80211_IFTYPE_AP) {
  73                                 changed |= BSS_CHANGED_AP_PROBE_RESP;
  74
  75 +                               if (sdata->vif.valid_links) {
  76 +                                       ieee80211_reconfig_ap_links(local,
  77 +                                                                   sdata,
  78 +                                                                   changed);
  79 +                                       break;
  80 +                               }
  81 +
  82                                 if (rcu_access_pointer(sdata->deflink.u.ap.beacon))
  83                                         drv_start_ap(local, sdata,
  84                                                      sdata->deflink.conf);