Merge tag 'mac80211-next-for-net-next-2021-10-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
Quite a few changes:
 * the applicable eth_hw_addr_set() and const hw_addr changes
 * various code cleanups/refactorings
 * stack usage reductions across the wireless stack
 * some unstructured find_ie() -> structured find_element()
   changes
 * a few more pieces of multi-BSSID support
 * some 6 GHz regulatory support
 * 6 GHz support in hwsim, for testing userspace code
 * Light Communications (LC, 802.11bb) early band definitions
   to be able to add a first driver soon

* tag 'mac80211-next-for-net-next-2021-10-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (35 commits)
  cfg80211: fix kernel-doc for MBSSID EMA
  mac80211: Prevent AP probing during suspend
  nl80211: Add LC placeholder band definition to nl80211_band
  ...
====================

Link: https://lore.kernel.org/r/20211021154953.134849-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 38 insertions, 0 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index d69b31c20fe2..e2b791c37591 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -111,6 +111,36 @@ static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
 	return 0;
 }
 
+static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata,
+					   struct cfg80211_mbssid_config params)
+{
+	struct ieee80211_sub_if_data *tx_sdata;
+
+	sdata->vif.mbssid_tx_vif = NULL;
+	sdata->vif.bss_conf.bssid_index = 0;
+	sdata->vif.bss_conf.nontransmitted = false;
+	sdata->vif.bss_conf.ema_ap = false;
+
+	if (sdata->vif.type != NL80211_IFTYPE_AP || !params.tx_wdev)
+		return -EINVAL;
+
+	tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params.tx_wdev);
+	if (!tx_sdata)
+		return -EINVAL;
+
+	if (tx_sdata == sdata) {
+		sdata->vif.mbssid_tx_vif = &sdata->vif;
+	} else {
+		sdata->vif.mbssid_tx_vif = &tx_sdata->vif;
+		sdata->vif.bss_conf.nontransmitted = true;
+		sdata->vif.bss_conf.bssid_index = params.index;
+	}
+	if (params.ema)
+		sdata->vif.bss_conf.ema_ap = true;
+
+	return 0;
+}
+
 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 						const char *name,
 						unsigned char name_assign_type,
@@ -1105,6 +1135,14 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 			changed |= BSS_CHANGED_HE_BSS_COLOR;
 	}
 
+	if (sdata->vif.type == NL80211_IFTYPE_AP &&
+	    params->mbssid_config.tx_wdev) {
+		err = ieee80211_set_ap_mbssid_options(sdata,
+						      params->mbssid_config);
+		if (err)
+			return err;
+	}
+
 	mutex_lock(&local->mtx);
 	err = ieee80211_vif_use_channel(sdata, &params->chandef,
 					IEEE80211_CHANCTX_SHARED);