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Commit 387910cc authored by Andrei Otcheretianski's avatar Andrei Otcheretianski Committed by Johannes Berg
Browse files

mac80211: Update CSA counters in mgmt frames 



Track current csa counter value and use it
to update mgmt frames at the provided offsets.

Signed-off-by: default avatarAndrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: default avatarLuciano Coelho <luciano.coelho@intel.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 34d22ce2

net/mac80211/cfg.c

+16 −1
Original line number Diff line number Diff line
@@ -3338,6 +3338,7 @@ __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 
	sdata->csa_radar_required = params->radar_required;

	sdata->csa_chandef = params->chandef;

	sdata->csa_block_tx = params->block_tx;

	sdata->csa_current_counter = params->count;

	sdata->vif.csa_active = true;



	if (sdata->csa_block_tx)
@@ -3382,6 +3383,7 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 
	bool need_offchan = false;

	u32 flags;

	int ret;

	u8 *data;



	if (params->dont_wait_for_ack)

		flags = IEEE80211_TX_CTL_NO_ACK;
@@ -3475,7 +3477,20 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 
	}

	skb_reserve(skb, local->hw.extra_tx_headroom);



	memcpy(skb_put(skb, params->len), params->buf, params->len);

	data = skb_put(skb, params->len);

	memcpy(data, params->buf, params->len);



	/* Update CSA counters */

	if (sdata->vif.csa_active &&

	    (sdata->vif.type == NL80211_IFTYPE_AP ||

	     sdata->vif.type == NL80211_IFTYPE_ADHOC) &&

	    params->n_csa_offsets) {

		int i;



		for (i = 0; i < params->n_csa_offsets; i++)

			data[params->csa_offsets[i]] =

					sdata->csa_current_counter;

	}



	IEEE80211_SKB_CB(skb)->flags = flags;

net/mac80211/ieee80211_i.h

+1 −0
Original line number Diff line number Diff line
@@ -766,6 +766,7 @@ struct ieee80211_sub_if_data { 
	struct ieee80211_chanctx *reserved_chanctx;

	struct cfg80211_chan_def reserved_chandef;

	bool reserved_radar_required;

	u8 csa_current_counter;



	/* used to reconfigure hardware SM PS */

	struct work_struct recalc_smps;

net/mac80211/tx.c

+3 −2
Original line number Diff line number Diff line
@@ -2449,7 +2449,8 @@ static void ieee80211_update_csa(struct ieee80211_sub_if_data *sdata, 
	if (WARN_ON(beacon_data[counter_offset_beacon] == 1))

		return;



	beacon_data[counter_offset_beacon]--;

	sdata->csa_current_counter--;

	beacon_data[counter_offset_beacon] = sdata->csa_current_counter;



	if (sdata->vif.type == NL80211_IFTYPE_AP && counter_offset_presp) {

		rcu_read_lock();
@@ -2460,7 +2461,7 @@ static void ieee80211_update_csa(struct ieee80211_sub_if_data *sdata, 
			rcu_read_unlock();

			return;

		}

		resp->data[counter_offset_presp]--;

		resp->data[counter_offset_presp] = sdata->csa_current_counter;

		rcu_read_unlock();

	}

}