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145 lines
4.4 KiB
Diff
145 lines
4.4 KiB
Diff
From: John Crispin <john@phrozen.org>
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Date: Wed, 15 Sep 2021 19:54:35 -0700
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Subject: [PATCH] mac80211: MBSSID support in interface handling
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Configure multiple BSSID and enhanced multi-BSSID advertisement (EMA)
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parameters in mac80211 for AP mode.
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For each interface, 'mbssid_tx_vif' points to the transmitting interface of
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the MBSSID set. The pointer is set to NULL if MBSSID is disabled.
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Function ieee80211_stop() is modified to always bring down all the
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non-transmitting interfaces first and the transmitting interface last.
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Signed-off-by: John Crispin <john@phrozen.org>
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Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
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Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
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Link: https://lore.kernel.org/r/20210916025437.29138-3-alokad@codeaurora.org
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[slightly change logic to be more obvious]
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Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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---
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--- a/include/net/mac80211.h
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+++ b/include/net/mac80211.h
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@@ -1719,6 +1719,7 @@ enum ieee80211_offload_flags {
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* write-protected by sdata_lock and local->mtx so holding either is fine
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* for read access.
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* @color_change_color: the bss color that will be used after the change.
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+ * @mbssid_tx_vif: Pointer to the transmitting interface if MBSSID is enabled.
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*/
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struct ieee80211_vif {
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enum nl80211_iftype type;
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@@ -1750,6 +1751,8 @@ struct ieee80211_vif {
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bool color_change_active;
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u8 color_change_color;
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+ struct ieee80211_vif *mbssid_tx_vif;
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+
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/* must be last */
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u8 drv_priv[] __aligned(sizeof(void *));
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};
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--- a/net/mac80211/cfg.c
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+++ b/net/mac80211/cfg.c
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@@ -112,6 +112,36 @@ static int ieee80211_set_mon_options(str
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return 0;
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}
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+static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata,
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+ struct cfg80211_mbssid_config params)
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+{
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+ struct ieee80211_sub_if_data *tx_sdata;
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+
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+ sdata->vif.mbssid_tx_vif = NULL;
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+ sdata->vif.bss_conf.bssid_index = 0;
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+ sdata->vif.bss_conf.nontransmitted = false;
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+ sdata->vif.bss_conf.ema_ap = false;
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+
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+ if (sdata->vif.type != NL80211_IFTYPE_AP || !params.tx_wdev)
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+ return -EINVAL;
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+
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+ tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params.tx_wdev);
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+ if (!tx_sdata)
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+ return -EINVAL;
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+
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+ if (tx_sdata == sdata) {
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+ sdata->vif.mbssid_tx_vif = &sdata->vif;
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+ } else {
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+ sdata->vif.mbssid_tx_vif = &tx_sdata->vif;
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+ sdata->vif.bss_conf.nontransmitted = true;
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+ sdata->vif.bss_conf.bssid_index = params.index;
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+ }
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+ if (params.ema)
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+ sdata->vif.bss_conf.ema_ap = true;
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+
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+ return 0;
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+}
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+
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static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
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const char *name,
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unsigned char name_assign_type,
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@@ -1107,6 +1137,14 @@ static int ieee80211_start_ap(struct wip
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changed |= BSS_CHANGED_HE_BSS_COLOR;
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}
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+ if (sdata->vif.type == NL80211_IFTYPE_AP &&
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+ params->mbssid_config.tx_wdev) {
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+ err = ieee80211_set_ap_mbssid_options(sdata,
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+ params->mbssid_config);
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+ if (err)
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+ return err;
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+ }
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+
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mutex_lock(&local->mtx);
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err = ieee80211_vif_use_channel(sdata, ¶ms->chandef,
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IEEE80211_CHANCTX_SHARED);
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--- a/net/mac80211/iface.c
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+++ b/net/mac80211/iface.c
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@@ -632,17 +632,46 @@ static void ieee80211_do_stop(struct iee
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ieee80211_add_virtual_monitor(local);
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}
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+static void ieee80211_stop_mbssid(struct ieee80211_sub_if_data *sdata)
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+{
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+ struct ieee80211_sub_if_data *tx_sdata, *non_tx_sdata, *tmp_sdata;
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+ struct ieee80211_vif *tx_vif = sdata->vif.mbssid_tx_vif;
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+
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+ if (!tx_vif)
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+ return;
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+
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+ tx_sdata = vif_to_sdata(tx_vif);
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+ sdata->vif.mbssid_tx_vif = NULL;
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+
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+ list_for_each_entry_safe(non_tx_sdata, tmp_sdata,
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+ &tx_sdata->local->interfaces, list) {
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+ if (non_tx_sdata != sdata && non_tx_sdata != tx_sdata &&
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+ non_tx_sdata->vif.mbssid_tx_vif == tx_vif &&
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+ ieee80211_sdata_running(non_tx_sdata)) {
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+ non_tx_sdata->vif.mbssid_tx_vif = NULL;
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+ dev_close(non_tx_sdata->wdev.netdev);
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+ }
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+ }
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+
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+ if (sdata != tx_sdata && ieee80211_sdata_running(tx_sdata)) {
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+ tx_sdata->vif.mbssid_tx_vif = NULL;
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+ dev_close(tx_sdata->wdev.netdev);
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+ }
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+}
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+
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static int ieee80211_stop(struct net_device *dev)
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{
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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- /* close all dependent VLAN interfaces before locking wiphy */
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+ /* close dependent VLAN and MBSSID interfaces before locking wiphy */
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if (sdata->vif.type == NL80211_IFTYPE_AP) {
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struct ieee80211_sub_if_data *vlan, *tmpsdata;
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list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans,
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u.vlan.list)
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dev_close(vlan->dev);
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+
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+ ieee80211_stop_mbssid(sdata);
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}
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wiphy_lock(sdata->local->hw.wiphy);
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