Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 201 insertions, 0 deletions

diff --git a/net/mac80211/s1g.c b/net/mac80211/s1g.c
new file mode 100644
index 000000000..c1f964e99
--- /dev/null
+++ b/net/mac80211/s1g.c
@@ -0,0 +1,201 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * S1G handling
+ * Copyright(c) 2020 Adapt-IP
+ */
+#include <linux/ieee80211.h>
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "driver-ops.h"
+
+void ieee80211_s1g_sta_rate_init(struct sta_info *sta)
+{
+	/* avoid indicating legacy bitrates for S1G STAs */
+	sta->deflink.tx_stats.last_rate.flags |= IEEE80211_TX_RC_S1G_MCS;
+	sta->deflink.rx_stats.last_rate =
+			STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_S1G);
+}
+
+bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb)
+{
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
+
+	if (likely(!ieee80211_is_action(mgmt->frame_control)))
+		return false;
+
+	if (likely(mgmt->u.action.category != WLAN_CATEGORY_S1G))
+		return false;
+
+	return mgmt->u.action.u.s1g.action_code == WLAN_S1G_TWT_SETUP;
+}
+
+static void
+ieee80211_s1g_send_twt_setup(struct ieee80211_sub_if_data *sdata, const u8 *da,
+			     const u8 *bssid, struct ieee80211_twt_setup *twt)
+{
+	int len = IEEE80211_MIN_ACTION_SIZE + 4 + twt->length;
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_mgmt *mgmt;
+	struct sk_buff *skb;
+
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
+	if (!skb)
+		return;
+
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+	mgmt = skb_put_zero(skb, len);
+	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+					  IEEE80211_STYPE_ACTION);
+	memcpy(mgmt->da, da, ETH_ALEN);
+	memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
+	memcpy(mgmt->bssid, bssid, ETH_ALEN);
+
+	mgmt->u.action.category = WLAN_CATEGORY_S1G;
+	mgmt->u.action.u.s1g.action_code = WLAN_S1G_TWT_SETUP;
+	memcpy(mgmt->u.action.u.s1g.variable, twt, 3 + twt->length);
+
+	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
+					IEEE80211_TX_INTFL_MLME_CONN_TX |
+					IEEE80211_TX_CTL_REQ_TX_STATUS;
+	ieee80211_tx_skb(sdata, skb);
+}
+
+static void
+ieee80211_s1g_send_twt_teardown(struct ieee80211_sub_if_data *sdata,
+				const u8 *da, const u8 *bssid, u8 flowid)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_mgmt *mgmt;
+	struct sk_buff *skb;
+	u8 *id;
+
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom +
+			    IEEE80211_MIN_ACTION_SIZE + 2);
+	if (!skb)
+		return;
+
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+	mgmt = skb_put_zero(skb, IEEE80211_MIN_ACTION_SIZE + 2);
+	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+					  IEEE80211_STYPE_ACTION);
+	memcpy(mgmt->da, da, ETH_ALEN);
+	memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
+	memcpy(mgmt->bssid, bssid, ETH_ALEN);
+
+	mgmt->u.action.category = WLAN_CATEGORY_S1G;
+	mgmt->u.action.u.s1g.action_code = WLAN_S1G_TWT_TEARDOWN;
+	id = (u8 *)mgmt->u.action.u.s1g.variable;
+	*id = flowid;
+
+	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
+					IEEE80211_TX_CTL_REQ_TX_STATUS;
+	ieee80211_tx_skb(sdata, skb);
+}
+
+static void
+ieee80211_s1g_rx_twt_setup(struct ieee80211_sub_if_data *sdata,
+			   struct sta_info *sta, struct sk_buff *skb)
+{
+	struct ieee80211_mgmt *mgmt = (void *)skb->data;
+	struct ieee80211_twt_setup *twt = (void *)mgmt->u.action.u.s1g.variable;
+	struct ieee80211_twt_params *twt_agrt = (void *)twt->params;
+
+	twt_agrt->req_type &= cpu_to_le16(~IEEE80211_TWT_REQTYPE_REQUEST);
+
+	/* broadcast TWT not supported yet */
+	if (twt->control & IEEE80211_TWT_CONTROL_NEG_TYPE_BROADCAST) {
+		twt_agrt->req_type &=
+			~cpu_to_le16(IEEE80211_TWT_REQTYPE_SETUP_CMD);
+		twt_agrt->req_type |=
+			le16_encode_bits(TWT_SETUP_CMD_REJECT,
+					 IEEE80211_TWT_REQTYPE_SETUP_CMD);
+		goto out;
+	}
+
+	/* TWT Information not supported yet */
+	twt->control |= IEEE80211_TWT_CONTROL_RX_DISABLED;
+
+	drv_add_twt_setup(sdata->local, sdata, &sta->sta, twt);
+out:
+	ieee80211_s1g_send_twt_setup(sdata, mgmt->sa, sdata->vif.addr, twt);
+}
+
+static void
+ieee80211_s1g_rx_twt_teardown(struct ieee80211_sub_if_data *sdata,
+			      struct sta_info *sta, struct sk_buff *skb)
+{
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
+
+	drv_twt_teardown_request(sdata->local, sdata, &sta->sta,
+				 mgmt->u.action.u.s1g.variable[0]);
+}
+
+static void
+ieee80211_s1g_tx_twt_setup_fail(struct ieee80211_sub_if_data *sdata,
+				struct sta_info *sta, struct sk_buff *skb)
+{
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
+	struct ieee80211_twt_setup *twt = (void *)mgmt->u.action.u.s1g.variable;
+	struct ieee80211_twt_params *twt_agrt = (void *)twt->params;
+	u8 flowid = le16_get_bits(twt_agrt->req_type,
+				  IEEE80211_TWT_REQTYPE_FLOWID);
+
+	drv_twt_teardown_request(sdata->local, sdata, &sta->sta, flowid);
+
+	ieee80211_s1g_send_twt_teardown(sdata, mgmt->sa, sdata->vif.addr,
+					flowid);
+}
+
+void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
+				 struct sk_buff *skb)
+{
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
+	struct ieee80211_local *local = sdata->local;
+	struct sta_info *sta;
+
+	mutex_lock(&local->sta_mtx);
+
+	sta = sta_info_get_bss(sdata, mgmt->sa);
+	if (!sta)
+		goto out;
+
+	switch (mgmt->u.action.u.s1g.action_code) {
+	case WLAN_S1G_TWT_SETUP:
+		ieee80211_s1g_rx_twt_setup(sdata, sta, skb);
+		break;
+	case WLAN_S1G_TWT_TEARDOWN:
+		ieee80211_s1g_rx_twt_teardown(sdata, sta, skb);
+		break;
+	default:
+		break;
+	}
+
+out:
+	mutex_unlock(&local->sta_mtx);
+}
+
+void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
+				     struct sk_buff *skb)
+{
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
+	struct ieee80211_local *local = sdata->local;
+	struct sta_info *sta;
+
+	mutex_lock(&local->sta_mtx);
+
+	sta = sta_info_get_bss(sdata, mgmt->da);
+	if (!sta)
+		goto out;
+
+	switch (mgmt->u.action.u.s1g.action_code) {
+	case WLAN_S1G_TWT_SETUP:
+		/* process failed twt setup frames */
+		ieee80211_s1g_tx_twt_setup_fail(sdata, sta, skb);
+		break;
+	default:
+		break;
+	}
+
+out:
+	mutex_unlock(&local->sta_mtx);
+}