From: Ayala Beker <ayala.beker@xxxxxxxxx>
In order to activate a link that is currently inactive due to
a negotiated TTLM request, need to first tear down the negotiated
TTLM request.
Add support for sending TTLM teardown request and update the links
state accordingly.
Signed-off-by: Ayala Beker <ayala.beker@xxxxxxxxx>
Reviewed-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@xxxxxxxxx>
---
include/net/mac80211.h | 9 ++++++
net/mac80211/ieee80211_i.h | 2 ++
net/mac80211/mlme.c | 58 ++++++++++++++++++++++++++++++++++++++
net/mac80211/status.c | 22 ++++++++++++++-
4 files changed, 90 insertions(+), 1 deletion(-)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 88bb781f33f6..f57c29de3a91 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -7591,6 +7591,15 @@ int ieee80211_set_active_links(struct ieee80211_vif *vif, u16 active_links);
void ieee80211_set_active_links_async(struct ieee80211_vif *vif,
u16 active_links);
+/**
+ * ieee80211_send_teardown_neg_ttlm - tear down a negotiated TTLM request
+ * @vif: the interface on which the tear down request should be sent.
+ *
+ * This function can be used to tear down a previously accepted negotiated
+ * TTLM request.
+ */
+void ieee80211_send_teardown_neg_ttlm(struct ieee80211_vif *vif);
+
/* for older drivers - let's not document these ... */
int ieee80211_emulate_add_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx);
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index b6fead612b66..925e875f9b96 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -89,6 +89,7 @@ enum ieee80211_status_data {
IEEE80211_STATUS_TYPE_MASK = 0x00f,
IEEE80211_STATUS_TYPE_INVALID = 0,
IEEE80211_STATUS_TYPE_SMPS = 1,
+ IEEE80211_STATUS_TYPE_NEG_TTLM = 2,
IEEE80211_STATUS_SUBDATA_MASK = 0xff0,
};
@@ -595,6 +596,7 @@ struct ieee80211_if_managed {
/* TID-to-link mapping support */
struct wiphy_delayed_work ttlm_work;
struct ieee80211_adv_ttlm_info ttlm_info;
+ struct wiphy_work teardown_ttlm_work;
/* dialog token enumerator for neg TTLM request */
u8 dialog_token_alloc;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 082fe2bf14fd..cd4b54e02653 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -6798,6 +6798,60 @@ void ieee80211_process_neg_ttlm_res(struct ieee80211_sub_if_data *sdata,
__ieee80211_disconnect(sdata);
}
+static void ieee80211_teardown_ttlm_work(struct wiphy *wiphy,
+ struct wiphy_work *work)
+{
+ u16 new_dormant_links;
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data,
+ u.mgd.neg_ttlm_timeout_work.work);
+
+ if (!sdata->vif.neg_ttlm.valid)
+ return;
+
+ memset(&sdata->vif.neg_ttlm, 0, sizeof(sdata->vif.neg_ttlm));
+ new_dormant_links =
+ sdata->vif.dormant_links & ~sdata->vif.suspended_links;
+ sdata->vif.suspended_links = 0;
+ ieee80211_vif_set_links(sdata, sdata->vif.valid_links,
+ new_dormant_links);
+ ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_MLD_TTLM |
+ BSS_CHANGED_MLD_VALID_LINKS);
+}
+
+void ieee80211_send_teardown_neg_ttlm(struct ieee80211_vif *vif)
+{
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_mgmt *mgmt;
+ struct sk_buff *skb;
+ int frame_len = offsetofend(struct ieee80211_mgmt,
+ u.action.u.ttlm_tear_down);
+ struct ieee80211_tx_info *info;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + frame_len);
+ if (!skb)
+ return;
+
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+ mgmt = skb_put_zero(skb, frame_len);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ IEEE80211_STYPE_ACTION);
+ memcpy(mgmt->da, sdata->vif.cfg.ap_addr, ETH_ALEN);
+ memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
+ memcpy(mgmt->bssid, sdata->vif.cfg.ap_addr, ETH_ALEN);
+
+ mgmt->u.action.category = WLAN_CATEGORY_PROTECTED_EHT;
+ mgmt->u.action.u.ttlm_tear_down.action_code =
+ WLAN_PROTECTED_EHT_ACTION_TTLM_TEARDOWN;
+
+ info = IEEE80211_SKB_CB(skb);
+ info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
+ info->status_data = IEEE80211_STATUS_TYPE_NEG_TTLM;
+ ieee80211_tx_skb(sdata, skb);
+}
+EXPORT_SYMBOL(ieee80211_send_teardown_neg_ttlm);
+
void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb)
{
@@ -7429,6 +7483,8 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
ieee80211_tid_to_link_map_work);
wiphy_delayed_work_init(&ifmgd->neg_ttlm_timeout_work,
ieee80211_neg_ttlm_timeout_work);
+ wiphy_work_init(&ifmgd->teardown_ttlm_work,
+ ieee80211_teardown_ttlm_work);
ifmgd->flags = 0;
ifmgd->powersave = sdata->wdev.ps;
@@ -8618,6 +8674,8 @@ void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
&ifmgd->beacon_connection_loss_work);
wiphy_work_cancel(sdata->local->hw.wiphy,
&ifmgd->csa_connection_drop_work);
+ wiphy_work_cancel(sdata->local->hw.wiphy,
+ &ifmgd->teardown_ttlm_work);
wiphy_delayed_work_cancel(sdata->local->hw.wiphy,
&ifmgd->tdls_peer_del_work);
wiphy_delayed_work_cancel(sdata->local->hw.wiphy,
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 1708b33cdc5e..dd8f857a1fbc 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -5,7 +5,7 @@
* Copyright 2006-2007 Jiri Benc <jbenc@xxxxxxx>
* Copyright 2008-2010 Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
* Copyright 2013-2014 Intel Mobile Communications GmbH
- * Copyright 2021-2023 Intel Corporation
+ * Copyright 2021-2024 Intel Corporation
*/
#include <linux/export.h>
@@ -696,6 +696,23 @@ static void ieee80211_handle_smps_status(struct ieee80211_sub_if_data *sdata,
wiphy_work_queue(sdata->local->hw.wiphy, &link->u.mgd.recalc_smps);
}
+static void
+ieee80211_handle_teardown_ttlm_status(struct ieee80211_sub_if_data *sdata,
+ bool acked)
+{
+ if (!sdata || !ieee80211_sdata_running(sdata))
+ return;
+
+ if (!acked)
+ return;
+
+ if (sdata->vif.type != NL80211_IFTYPE_STATION)
+ return;
+
+ wiphy_work_queue(sdata->local->hw.wiphy,
+ &sdata->u.mgd.teardown_ttlm_work);
+}
+
static void ieee80211_report_used_skb(struct ieee80211_local *local,
struct sk_buff *skb, bool dropped,
ktime_t ack_hwtstamp)
@@ -773,6 +790,9 @@ static void ieee80211_report_used_skb(struct ieee80211_local *local,
ieee80211_handle_smps_status(sdata, acked,
info->status_data);
break;
+ case IEEE80211_STATUS_TYPE_NEG_TTLM:
+ ieee80211_handle_teardown_ttlm_status(sdata, acked);
+ break;
}
rcu_read_unlock();
}
--
2.34.1
