1 files changed, 287 insertions, 14 deletions

diff --git a/drivers/net/wireless/realtek/rtw89/mac80211.c b/drivers/net/wireless/realtek/rtw89/mac80211.c
index 619d2d3771d5..b3669e0074df 100644
--- a/drivers/net/wireless/realtek/rtw89/mac80211.c
+++ b/drivers/net/wireless/realtek/rtw89/mac80211.c
@@ -189,10 +189,10 @@ static int rtw89_ops_add_interface(struct ieee80211_hw *hw,
 
 	rtw89_core_txq_init(rtwdev, vif->txq);
 
-	if (!rtw89_rtwvif_in_list(rtwdev, rtwvif))
+	if (!rtw89_rtwvif_in_list(rtwdev, rtwvif)) {
 		list_add_tail(&rtwvif->list, &rtwdev->rtwvifs_list);
-
-	INIT_LIST_HEAD(&rtwvif->mgnt_entry);
+		INIT_LIST_HEAD(&rtwvif->mgnt_entry);
+	}
 
 	ether_addr_copy(rtwvif->mac_addr, vif->addr);
 
@@ -202,7 +202,7 @@ static int rtw89_ops_add_interface(struct ieee80211_hw *hw,
 
 	rtw89_traffic_stats_init(rtwdev, &rtwvif->stats);
 
-	rtwvif_link = rtw89_vif_set_link(rtwvif, 0);
+	rtwvif_link = rtw89_vif_set_link(rtwvif, RTW89_VIF_IDLE_LINK_ID);
 	if (!rtwvif_link) {
 		ret = -EINVAL;
 		goto release_port;
@@ -218,7 +218,7 @@ static int rtw89_ops_add_interface(struct ieee80211_hw *hw,
 	return 0;
 
 unset_link:
-	rtw89_vif_unset_link(rtwvif, 0);
+	rtw89_vif_unset_link(rtwvif, RTW89_VIF_IDLE_LINK_ID);
 release_port:
 	list_del_init(&rtwvif->list);
 	rtw89_core_release_bit_map(rtwdev->hw_port, port);
@@ -246,17 +246,17 @@ static void rtw89_ops_remove_interface(struct ieee80211_hw *hw,
 
 	mutex_lock(&rtwdev->mutex);
 
-	rtwvif_link = rtwvif->links[0];
+	rtwvif_link = rtwvif->links[RTW89_VIF_IDLE_LINK_ID];
 	if (unlikely(!rtwvif_link)) {
 		rtw89_err(rtwdev,
 			  "%s: rtwvif link (link_id %u) is not active\n",
-			  __func__, 0);
+			  __func__, RTW89_VIF_IDLE_LINK_ID);
 		goto bottom;
 	}
 
 	__rtw89_ops_remove_iface_link(rtwdev, rtwvif_link);
 
-	rtw89_vif_unset_link(rtwvif, 0);
+	rtw89_vif_unset_link(rtwvif, RTW89_VIF_IDLE_LINK_ID);
 
 bottom:
 	list_del_init(&rtwvif->list);
@@ -509,6 +509,7 @@ static int __rtw89_ops_sta_add(struct rtw89_dev *rtwdev,
 		rtw89_core_txq_init(rtwdev, sta->txq[i]);
 
 	skb_queue_head_init(&rtwsta->roc_queue);
+	bitmap_zero(rtwsta->pairwise_sec_cam_map, RTW89_MAX_SEC_CAM_NUM);
 
 	rtwsta_link = rtw89_sta_set_link(rtwsta, sta->deflink.link_id);
 	if (!rtwsta_link) {
@@ -775,6 +776,7 @@ static int rtw89_ops_start_ap(struct ieee80211_hw *hw,
 	struct rtw89_vif *rtwvif = vif_to_rtwvif(vif);
 	struct rtw89_vif_link *rtwvif_link;
 	const struct rtw89_chan *chan;
+	int ret = 0;
 
 	mutex_lock(&rtwdev->mutex);
 
@@ -783,6 +785,7 @@ static int rtw89_ops_start_ap(struct ieee80211_hw *hw,
 		rtw89_err(rtwdev,
 			  "%s: rtwvif link (link_id %u) is not active\n",
 			  __func__, link_conf->link_id);
+		ret = -ENOLINK;
 		goto out;
 	}
 
@@ -804,12 +807,18 @@ static int rtw89_ops_start_ap(struct ieee80211_hw *hw,
 	rtw89_fw_h2c_cam(rtwdev, rtwvif_link, NULL, NULL);
 	rtw89_chip_rfk_channel(rtwdev, rtwvif_link);
 
+	if (RTW89_CHK_FW_FEATURE(NOTIFY_AP_INFO, &rtwdev->fw)) {
+		ret = rtw89_fw_h2c_ap_info_refcount(rtwdev, true);
+		if (ret)
+			goto out;
+	}
+
 	rtw89_queue_chanctx_work(rtwdev);
 
 out:
 	mutex_unlock(&rtwdev->mutex);
 
-	return 0;
+	return ret;
 }
 
 static
@@ -830,6 +839,9 @@ void rtw89_ops_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 		goto out;
 	}
 
+	if (RTW89_CHK_FW_FEATURE(NOTIFY_AP_INFO, &rtwdev->fw))
+		rtw89_fw_h2c_ap_info_refcount(rtwdev, false);
+
 	rtw89_mac_stop_ap(rtwdev, rtwvif_link);
 	rtw89_chip_h2c_assoc_cmac_tbl(rtwdev, rtwvif_link, NULL);
 	rtw89_fw_h2c_join_info(rtwdev, rtwvif_link, NULL, true);
@@ -1273,11 +1285,11 @@ static void rtw89_ops_cancel_hw_scan(struct ieee80211_hw *hw,
 	if (!RTW89_CHK_FW_FEATURE(SCAN_OFFLOAD, &rtwdev->fw))
 		return;
 
-	if (!rtwdev->scanning)
-		return;
-
 	mutex_lock(&rtwdev->mutex);
 
+	if (!rtwdev->scanning)
+		goto out;
+
 	rtwvif_link = rtw89_vif_get_link_inst(rtwvif, 0);
 	if (unlikely(!rtwvif_link)) {
 		rtw89_err(rtwdev, "cancel hw scan: find no link on HW-0\n");
@@ -1295,10 +1307,15 @@ static void rtw89_ops_sta_rc_update(struct ieee80211_hw *hw,
 				    struct ieee80211_link_sta *link_sta,
 				    u32 changed)
 {
-	struct ieee80211_sta *sta = link_sta->sta;
+	struct rtw89_sta *rtwsta = sta_to_rtwsta(link_sta->sta);
 	struct rtw89_dev *rtwdev = hw->priv;
+	struct rtw89_sta_link *rtwsta_link;
+
+	rtwsta_link = rtwsta->links[link_sta->link_id];
+	if (unlikely(!rtwsta_link))
+		return;
 
-	rtw89_phy_ra_update_sta(rtwdev, sta, changed);
+	rtw89_phy_ra_update_sta_link(rtwdev, rtwsta_link, changed);
 }
 
 static int rtw89_ops_add_chanctx(struct ieee80211_hw *hw,
@@ -1473,6 +1490,259 @@ static int rtw89_ops_set_tid_config(struct ieee80211_hw *hw,
 	return 0;
 }
 
+static bool rtw89_can_work_on_links(struct rtw89_dev *rtwdev,
+				    struct ieee80211_vif *vif, u16 links)
+{
+	struct rtw89_vif *rtwvif = vif_to_rtwvif(vif);
+	u8 w = hweight16(links);
+
+	if (vif->type != NL80211_IFTYPE_STATION &&
+	    w > RTW89_MLD_NON_STA_LINK_NUM)
+		return false;
+
+	return w <= rtwvif->links_inst_valid_num;
+}
+
+static bool rtw89_ops_can_activate_links(struct ieee80211_hw *hw,
+					 struct ieee80211_vif *vif,
+					 u16 active_links)
+{
+	struct rtw89_dev *rtwdev = hw->priv;
+
+	guard(mutex)(&rtwdev->mutex);
+
+	return rtw89_can_work_on_links(rtwdev, vif, active_links);
+}
+
+static void __rtw89_ops_clr_vif_links(struct rtw89_dev *rtwdev,
+				      struct rtw89_vif *rtwvif,
+				      unsigned long clr_links)
+{
+	struct rtw89_vif_link *rtwvif_link;
+	unsigned int link_id;
+
+	for_each_set_bit(link_id, &clr_links, IEEE80211_MLD_MAX_NUM_LINKS) {
+		rtwvif_link = rtwvif->links[link_id];
+		if (unlikely(!rtwvif_link))
+			continue;
+
+		__rtw89_ops_remove_iface_link(rtwdev, rtwvif_link);
+
+		rtw89_vif_unset_link(rtwvif, link_id);
+	}
+}
+
+static int __rtw89_ops_set_vif_links(struct rtw89_dev *rtwdev,
+				     struct rtw89_vif *rtwvif,
+				     unsigned long set_links)
+{
+	struct rtw89_vif_link *rtwvif_link;
+	unsigned int link_id;
+	int ret;
+
+	for_each_set_bit(link_id, &set_links, IEEE80211_MLD_MAX_NUM_LINKS) {
+		rtwvif_link = rtw89_vif_set_link(rtwvif, link_id);
+		if (!rtwvif_link)
+			return -EINVAL;
+
+		ret = __rtw89_ops_add_iface_link(rtwdev, rtwvif_link);
+		if (ret) {
+			rtw89_err(rtwdev, "%s: failed to add iface (link id %u)\n",
+				  __func__, link_id);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static
+int rtw89_ops_change_vif_links(struct ieee80211_hw *hw,
+			       struct ieee80211_vif *vif,
+			       u16 old_links, u16 new_links,
+			       struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS])
+{
+	struct rtw89_dev *rtwdev = hw->priv;
+	struct rtw89_vif *rtwvif = vif_to_rtwvif(vif);
+	unsigned long clr_links = old_links & ~new_links;
+	unsigned long set_links = new_links & ~old_links;
+	bool removing_links = !old_links || clr_links;
+	struct rtw89_link_conf_container *snap;
+	int ret = 0;
+	int i;
+
+	guard(mutex)(&rtwdev->mutex);
+
+	rtw89_debug(rtwdev, RTW89_DBG_STATE,
+		    "%s: old_links (0x%08x) -> new_links (0x%08x)\n",
+		    __func__, old_links, new_links);
+
+	if (!rtw89_can_work_on_links(rtwdev, vif, new_links))
+		return -EOPNOTSUPP;
+
+	if (removing_links) {
+		snap = kzalloc(sizeof(*snap), GFP_KERNEL);
+		if (!snap)
+			return -ENOMEM;
+
+		for (i = 0; i < ARRAY_SIZE(snap->link_conf); i++)
+			snap->link_conf[i] = old[i];
+
+		rcu_assign_pointer(rtwvif->snap_link_confs, snap);
+	}
+
+	/* might depend on @snap; don't change order */
+	rtw89_leave_ips_by_hwflags(rtwdev);
+
+	if (rtwdev->scanning)
+		rtw89_hw_scan_abort(rtwdev, rtwdev->scan_info.scanning_vif);
+
+	if (!old_links)
+		__rtw89_ops_clr_vif_links(rtwdev, rtwvif,
+					  BIT(RTW89_VIF_IDLE_LINK_ID));
+	else if (clr_links)
+		__rtw89_ops_clr_vif_links(rtwdev, rtwvif, clr_links);
+
+	if (removing_links) {
+		/* @snap is required if and only if during removing links.
+		 * However, it's done here. So, cleanup @snap immediately.
+		 */
+		rcu_assign_pointer(rtwvif->snap_link_confs, NULL);
+
+		/* The pointers in @old will free after this function return,
+		 * so synchronously wait for all readers of snap to be done.
+		 */
+		synchronize_rcu();
+		kfree(snap);
+	}
+
+	if (set_links) {
+		ret = __rtw89_ops_set_vif_links(rtwdev, rtwvif, set_links);
+		if (ret)
+			__rtw89_ops_clr_vif_links(rtwdev, rtwvif, set_links);
+	} else if (!new_links) {
+		ret = __rtw89_ops_set_vif_links(rtwdev, rtwvif,
+						BIT(RTW89_VIF_IDLE_LINK_ID));
+		if (ret)
+			__rtw89_ops_clr_vif_links(rtwdev, rtwvif,
+						  BIT(RTW89_VIF_IDLE_LINK_ID));
+	}
+
+	rtw89_enter_ips_by_hwflags(rtwdev);
+	return ret;
+}
+
+static void __rtw89_ops_clr_sta_links(struct rtw89_dev *rtwdev,
+				      struct rtw89_sta *rtwsta,
+				      unsigned long clr_links)
+{
+	struct rtw89_vif_link *rtwvif_link;
+	struct rtw89_sta_link *rtwsta_link;
+	unsigned int link_id;
+
+	for_each_set_bit(link_id, &clr_links, IEEE80211_MLD_MAX_NUM_LINKS) {
+		rtwsta_link = rtwsta->links[link_id];
+		if (unlikely(!rtwsta_link))
+			continue;
+
+		rtwvif_link = rtwsta_link->rtwvif_link;
+
+		rtw89_core_sta_link_disassoc(rtwdev, rtwvif_link, rtwsta_link);
+		rtw89_core_sta_link_disconnect(rtwdev, rtwvif_link, rtwsta_link);
+		rtw89_core_sta_link_remove(rtwdev, rtwvif_link, rtwsta_link);
+
+		rtw89_sta_unset_link(rtwsta, link_id);
+	}
+}
+
+static int __rtw89_ops_set_sta_links(struct rtw89_dev *rtwdev,
+				     struct rtw89_sta *rtwsta,
+				     unsigned long set_links)
+{
+	struct rtw89_vif_link *rtwvif_link;
+	struct rtw89_sta_link *rtwsta_link;
+	unsigned int link_id;
+	u8 sec_cam_idx;
+	int ret;
+
+	for_each_set_bit(link_id, &set_links, IEEE80211_MLD_MAX_NUM_LINKS) {
+		rtwsta_link = rtw89_sta_set_link(rtwsta, link_id);
+		if (!rtwsta_link)
+			return -EINVAL;
+
+		rtwvif_link = rtwsta_link->rtwvif_link;
+
+		ret = rtw89_core_sta_link_add(rtwdev, rtwvif_link, rtwsta_link);
+		if (ret) {
+			rtw89_err(rtwdev, "%s: failed to add sta (link id %u)\n",
+				  __func__, link_id);
+			return ret;
+		}
+
+		rtw89_vif_type_mapping(rtwvif_link, true);
+
+		ret = rtw89_core_sta_link_assoc(rtwdev, rtwvif_link, rtwsta_link);
+		if (ret) {
+			rtw89_err(rtwdev, "%s: failed to assoc sta (link id %u)\n",
+				  __func__, link_id);
+			return ret;
+		}
+
+		__rtw89_ops_bss_link_assoc(rtwdev, rtwvif_link);
+
+		for_each_set_bit(sec_cam_idx, rtwsta->pairwise_sec_cam_map,
+				 RTW89_MAX_SEC_CAM_NUM) {
+			ret = rtw89_cam_attach_link_sec_cam(rtwdev,
+							    rtwvif_link,
+							    rtwsta_link,
+							    sec_cam_idx);
+			if (ret) {
+				rtw89_err(rtwdev,
+					  "%s: failed to apply pairwise key (link id %u)\n",
+					  __func__, link_id);
+				return ret;
+			}
+		}
+	}
+
+	return 0;
+}
+
+static
+int rtw89_ops_change_sta_links(struct ieee80211_hw *hw,
+			       struct ieee80211_vif *vif,
+			       struct ieee80211_sta *sta,
+			       u16 old_links, u16 new_links)
+{
+	struct rtw89_dev *rtwdev = hw->priv;
+	struct rtw89_sta *rtwsta = sta_to_rtwsta(sta);
+	unsigned long clr_links = old_links & ~new_links;
+	unsigned long set_links = new_links & ~old_links;
+	int ret = 0;
+
+	guard(mutex)(&rtwdev->mutex);
+
+	rtw89_debug(rtwdev, RTW89_DBG_STATE,
+		    "%s: old_links (0x%08x) -> new_links (0x%08x)\n",
+		    __func__, old_links, new_links);
+
+	if (!rtw89_can_work_on_links(rtwdev, vif, new_links))
+		return -EOPNOTSUPP;
+
+	rtw89_leave_ps_mode(rtwdev);
+
+	if (clr_links)
+		__rtw89_ops_clr_sta_links(rtwdev, rtwsta, clr_links);
+
+	if (set_links) {
+		ret = __rtw89_ops_set_sta_links(rtwdev, rtwsta, set_links);
+		if (ret)
+			__rtw89_ops_clr_sta_links(rtwdev, rtwsta, set_links);
+	}
+
+	return ret;
+}
+
 #ifdef CONFIG_PM
 static int rtw89_ops_suspend(struct ieee80211_hw *hw,
 			     struct cfg80211_wowlan *wowlan)
@@ -1600,6 +1870,9 @@ const struct ieee80211_ops rtw89_ops = {
 	.set_sar_specs		= rtw89_ops_set_sar_specs,
 	.link_sta_rc_update	= rtw89_ops_sta_rc_update,
 	.set_tid_config		= rtw89_ops_set_tid_config,
+	.can_activate_links	= rtw89_ops_can_activate_links,
+	.change_vif_links	= rtw89_ops_change_vif_links,
+	.change_sta_links	= rtw89_ops_change_sta_links,
 #ifdef CONFIG_PM
 	.suspend		= rtw89_ops_suspend,
 	.resume			= rtw89_ops_resume,