wifi: mac80211: configure puncturing bitmap

- Configure the bitmap in link_conf and notify the driver.
- Modify 'change' in ieee80211_start_ap() from u32 to u64 to support
BSS_CHANGED_EHT_PUNCTURING.
- Propagate the bitmap in channel switch events to userspace.

Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Signed-off-by: Muna Sinada <quic_msinada@quicinc.com>
Link: https://lore.kernel.org/r/20230131001227.25014-5-quic_alokad@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 54ffc0c..219fd15 100644 (file)
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -645,6 +645,7 @@ struct ieee80211_fils_discovery {
  * @csa_active: marks whether a channel switch is going on. Internally it is
  *     write-protected by sdata_lock and local->mtx so holding either is fine
  *     for read access.
+ * @csa_punct_bitmap: new puncturing bitmap for channel switch
  * @mu_mimo_owner: indicates interface owns MU-MIMO capability
  * @chanctx_conf: The channel context this interface is assigned to, or %NULL
  *     when it is not assigned. This pointer is RCU-protected due to the TX
@@ -741,6 +742,8 @@ struct ieee80211_bss_conf {
        u16 eht_puncturing;
 
        bool csa_active;
+       u16 csa_punct_bitmap;
+
        bool mu_mimo_owner;
        struct ieee80211_chanctx_conf __rcu *chanctx_conf;
 

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index f723b2c..d2519a4 100644 (file)
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1220,7 +1220,7 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
        struct ieee80211_local *local = sdata->local;
        struct beacon_data *old;
        struct ieee80211_sub_if_data *vlan;
-       u32 changed = BSS_CHANGED_BEACON_INT |
+       u64 changed = BSS_CHANGED_BEACON_INT |
                      BSS_CHANGED_BEACON_ENABLED |
                      BSS_CHANGED_BEACON |
                      BSS_CHANGED_P2P_PS |
@@ -1296,6 +1296,11 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
                                IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO;
        }
 
+       if (params->eht_cap) {
+               link_conf->eht_puncturing = params->punct_bitmap;
+               changed |= BSS_CHANGED_EHT_PUNCTURING;
+       }
+
        if (sdata->vif.type == NL80211_IFTYPE_AP &&
            params->mbssid_config.tx_wdev) {
                err = ieee80211_set_ap_mbssid_options(sdata,
@@ -3546,6 +3551,12 @@ static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
        lockdep_assert_held(&local->mtx);
        lockdep_assert_held(&local->chanctx_mtx);
 
+       if (sdata->vif.bss_conf.eht_puncturing != sdata->vif.bss_conf.csa_punct_bitmap) {
+               sdata->vif.bss_conf.eht_puncturing =
+                                       sdata->vif.bss_conf.csa_punct_bitmap;
+               changed |= BSS_CHANGED_EHT_PUNCTURING;
+       }
+
        /*
         * using reservation isn't immediate as it may be deferred until later
         * with multi-vif. once reservation is complete it will re-schedule the
@@ -3588,7 +3599,7 @@ static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
                return err;
 
        cfg80211_ch_switch_notify(sdata->dev, &sdata->deflink.csa_chandef, 0,
-                                 0);
+                                 sdata->vif.bss_conf.eht_puncturing);
 
        return 0;
 }
@@ -3850,9 +3861,13 @@ __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
                goto out;
        }
 
+       if (params->punct_bitmap && !sdata->vif.bss_conf.eht_support)
+               goto out;
+
        sdata->deflink.csa_chandef = params->chandef;
        sdata->deflink.csa_block_tx = params->block_tx;
        sdata->vif.bss_conf.csa_active = true;
+       sdata->vif.bss_conf.csa_punct_bitmap = params->punct_bitmap;
 
        if (sdata->deflink.csa_block_tx)
                ieee80211_stop_vif_queues(local, sdata,
@@ -3860,7 +3875,8 @@ __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
 
        cfg80211_ch_switch_started_notify(sdata->dev,
                                          &sdata->deflink.csa_chandef, 0,
-                                         params->count, params->block_tx, 0);
+                                         params->count, params->block_tx,
+                                         sdata->vif.bss_conf.csa_punct_bitmap);
 
        if (changed) {
                ieee80211_link_info_change_notify(sdata, &sdata->deflink,