Merge tag 'ath-next-20240909' of git://git.kernel.org/pub/scm/linux/kernel/git/ath/ath

ath.git patches for v6.12

This is once again a fairly light pull request since ath12k is still
working on MLO-related changes, and the other drivers are mostly in
maintenance mode.

ath12k

* Fix a frame-larger-than warning seen with debug builds
* Fix flex-array-member-not-at-end warnings

ath11k

* Fix flex-array-member-not-at-end warnings

ath9k

* Fix a syzbot-reported issue on USB-based devices

Author: Kalle Valo

drivers/net/wireless/ath/ath11k/core.h

@@ -407,11 +407,17 @@ struct ath11k_vif {
 	bool wpaie_present;
 	bool bcca_zero_sent;
 	bool do_not_send_tmpl;
-	struct ieee80211_chanctx_conf chanctx;
 	struct ath11k_arp_ns_offload arp_ns_offload;
 	struct ath11k_rekey_data rekey_data;
 
 	struct ath11k_reg_tpc_power_info reg_tpc_info;
+
+	/* Must be last - ends in a flexible-array member.
+	 *
+	 * FIXME: Driver should not copy struct ieee80211_chanctx_conf,
+	 * especially because it has a flexible array. Find a better way.
+	 */
+	struct ieee80211_chanctx_conf chanctx;
 };
 
 struct ath11k_vif_iter {

drivers/net/wireless/ath/ath11k/dp.h

@@ -1305,18 +1305,6 @@ struct htt_ppdu_stats_user_rate {
 #define HTT_TX_INFO_PEERID(_flags) \
 			FIELD_GET(HTT_PPDU_STATS_TX_INFO_FLAGS_PEERID_M, _flags)
 
-struct htt_tx_ppdu_stats_info {
-	struct htt_tlv tlv_hdr;
-	u32 tx_success_bytes;
-	u32 tx_retry_bytes;
-	u32 tx_failed_bytes;
-	u32 flags; /* %HTT_PPDU_STATS_TX_INFO_FLAGS_ */
-	u16 tx_success_msdus;
-	u16 tx_retry_msdus;
-	u16 tx_failed_msdus;
-	u16 tx_duration; /* united in us */
-} __packed;
-
 enum  htt_ppdu_stats_usr_compln_status {
 	HTT_PPDU_STATS_USER_STATUS_OK,
 	HTT_PPDU_STATS_USER_STATUS_FILTERED,
@@ -1364,17 +1352,6 @@ struct htt_ppdu_stats_usr_cmpltn_ack_ba_status {
 	u32 success_bytes;
 } __packed;
 
-struct htt_ppdu_stats_usr_cmn_array {
-	struct htt_tlv tlv_hdr;
-	u32 num_ppdu_stats;
-	/* tx_ppdu_stats_info is filled by multiple struct htt_tx_ppdu_stats_info
-	 * elements.
-	 * tx_ppdu_stats_info is variable length, with length =
-	 *     number_of_ppdu_stats * sizeof (struct htt_tx_ppdu_stats_info)
-	 */
-	struct htt_tx_ppdu_stats_info tx_ppdu_info[];
-} __packed;
-
 struct htt_ppdu_user_stats {
 	u16 peer_id;
 	u32 tlv_flags;

drivers/net/wireless/ath/ath12k/core.h

@@ -287,14 +287,20 @@ struct ath12k_vif {
 	int txpower;
 	bool rsnie_present;
 	bool wpaie_present;
-	struct ieee80211_chanctx_conf chanctx;
 	u32 key_cipher;
 	u8 tx_encap_type;
 	u8 vdev_stats_id;
 	u32 punct_bitmap;
 	bool ps;
 	struct ath12k_vif_cache *cache;
 	struct ath12k_rekey_data rekey_data;
+
+	/* Must be last - ends in a flexible-array member.
+	 *
+	 * FIXME: Driver should not copy struct ieee80211_chanctx_conf,
+	 * especially because it has a flexible array. Find a better way.
+	 */
+	struct ieee80211_chanctx_conf chanctx;
 };
 
 struct ath12k_vif_iter {

drivers/net/wireless/ath/ath12k/dp.h

@@ -1495,18 +1495,6 @@ struct htt_ppdu_stats_user_rate {
 #define HTT_TX_INFO_PEERID(_flags) \
 			u32_get_bits(_flags, HTT_PPDU_STATS_TX_INFO_FLAGS_PEERID_M)
 
-struct htt_tx_ppdu_stats_info {
-	struct htt_tlv tlv_hdr;
-	__le32 tx_success_bytes;
-	__le32 tx_retry_bytes;
-	__le32 tx_failed_bytes;
-	__le32 flags; /* %HTT_PPDU_STATS_TX_INFO_FLAGS_ */
-	__le16 tx_success_msdus;
-	__le16 tx_retry_msdus;
-	__le16 tx_failed_msdus;
-	__le16 tx_duration; /* united in us */
-} __packed;
-
 enum  htt_ppdu_stats_usr_compln_status {
 	HTT_PPDU_STATS_USER_STATUS_OK,
 	HTT_PPDU_STATS_USER_STATUS_FILTERED,

drivers/net/wireless/ath/ath12k/mac.c

@@ -3663,7 +3663,7 @@ static int ath12k_mac_op_hw_scan(struct ieee80211_hw *hw,
 	struct ath12k *ar, *prev_ar;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 	struct cfg80211_scan_request *req = &hw_req->req;
-	struct ath12k_wmi_scan_req_arg arg = {};
+	struct ath12k_wmi_scan_req_arg *arg = NULL;
 	int ret;
 	int i;
 	bool create = true;
@@ -3745,42 +3745,47 @@ static int ath12k_mac_op_hw_scan(struct ieee80211_hw *hw,
 	if (ret)
 		goto exit;
 
-	ath12k_wmi_start_scan_init(ar, &arg);
-	arg.vdev_id = arvif->vdev_id;
-	arg.scan_id = ATH12K_SCAN_ID;
+	arg = kzalloc(sizeof(*arg), GFP_KERNEL);
+	if (!arg) {
+		ret = -ENOMEM;
+		goto exit;
+	}
+
+	ath12k_wmi_start_scan_init(ar, arg);
+	arg->vdev_id = arvif->vdev_id;
+	arg->scan_id = ATH12K_SCAN_ID;
 
 	if (req->ie_len) {
-		arg.extraie.ptr = kmemdup(req->ie, req->ie_len, GFP_KERNEL);
-		if (!arg.extraie.ptr) {
+		arg->extraie.ptr = kmemdup(req->ie, req->ie_len, GFP_KERNEL);
+		if (!arg->extraie.ptr) {
 			ret = -ENOMEM;
 			goto exit;
 		}
-		arg.extraie.len = req->ie_len;
+		arg->extraie.len = req->ie_len;
 	}
 
 	if (req->n_ssids) {
-		arg.num_ssids = req->n_ssids;
-		for (i = 0; i < arg.num_ssids; i++)
-			arg.ssid[i] = req->ssids[i];
+		arg->num_ssids = req->n_ssids;
+		for (i = 0; i < arg->num_ssids; i++)
+			arg->ssid[i] = req->ssids[i];
 	} else {
-		arg.scan_f_passive = 1;
+		arg->scan_f_passive = 1;
 	}
 
 	if (req->n_channels) {
-		arg.num_chan = req->n_channels;
-		arg.chan_list = kcalloc(arg.num_chan, sizeof(*arg.chan_list),
-					GFP_KERNEL);
-
-		if (!arg.chan_list) {
+		arg->num_chan = req->n_channels;
+		arg->chan_list = kcalloc(arg->num_chan, sizeof(*arg->chan_list),
+					 GFP_KERNEL);
+		if (!arg->chan_list) {
 			ret = -ENOMEM;
 			goto exit;
 		}
 
-		for (i = 0; i < arg.num_chan; i++)
-			arg.chan_list[i] = req->channels[i]->center_freq;
+		for (i = 0; i < arg->num_chan; i++)
+			arg->chan_list[i] = req->channels[i]->center_freq;
 	}
 
-	ret = ath12k_start_scan(ar, &arg);
+	ret = ath12k_start_scan(ar, arg);
 	if (ret) {
 		ath12k_warn(ar->ab, "failed to start hw scan: %d\n", ret);
 		spin_lock_bh(&ar->data_lock);
@@ -3790,14 +3795,15 @@ static int ath12k_mac_op_hw_scan(struct ieee80211_hw *hw,
 
 	/* Add a margin to account for event/command processing */
 	ieee80211_queue_delayed_work(ath12k_ar_to_hw(ar), &ar->scan.timeout,
-				     msecs_to_jiffies(arg.max_scan_time +
+				     msecs_to_jiffies(arg->max_scan_time +
 						      ATH12K_MAC_SCAN_TIMEOUT_MSECS));
 
 exit:
-	kfree(arg.chan_list);
-
-	if (req->ie_len)
-		kfree(arg.extraie.ptr);
+	if (arg) {
+		kfree(arg->chan_list);
+		kfree(arg->extraie.ptr);
+		kfree(arg);
+	}
 
 	mutex_unlock(&ar->conf_mutex);
 

drivers/net/wireless/ath/ath9k/hif_usb.c

@@ -716,8 +716,7 @@ static void ath9k_hif_usb_rx_cb(struct urb *urb)
 	}
 
 resubmit:
-	skb_reset_tail_pointer(skb);
-	skb_trim(skb, 0);
+	__skb_set_length(skb, 0);
 
 	usb_anchor_urb(urb, &hif_dev->rx_submitted);
 	ret = usb_submit_urb(urb, GFP_ATOMIC);
@@ -754,8 +753,7 @@ static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
 	case -ESHUTDOWN:
 		goto free_skb;
 	default:
-		skb_reset_tail_pointer(skb);
-		skb_trim(skb, 0);
+		__skb_set_length(skb, 0);
 
 		goto resubmit;
 	}