1 files changed, 211 insertions, 71 deletions

diff --git a/drivers/net/wireless/ath/ath12k/dp_tx.c b/drivers/net/wireless/ath/ath12k/dp_tx.c
index 62f9cdbb811c..a8d341a6df01 100644
--- a/drivers/net/wireless/ath/ath12k/dp_tx.c
+++ b/drivers/net/wireless/ath/ath12k/dp_tx.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include "core.h"
@@ -10,7 +10,7 @@
 #include "hw.h"
 
 static enum hal_tcl_encap_type
-ath12k_dp_tx_get_encap_type(struct ath12k_vif *arvif, struct sk_buff *skb)
+ath12k_dp_tx_get_encap_type(struct ath12k_link_vif *arvif, struct sk_buff *skb)
 {
 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 	struct ath12k_base *ab = arvif->ar->ab;
@@ -124,7 +124,99 @@ static void ath12k_hal_tx_cmd_ext_desc_setup(struct ath12k_base *ab,
 						 HAL_TX_MSDU_EXT_INFO1_ENCRYPT_TYPE);
 }
 
-int ath12k_dp_tx(struct ath12k *ar, struct ath12k_vif *arvif,
+#define HTT_META_DATA_ALIGNMENT 0x8
+
+static void *ath12k_dp_metadata_align_skb(struct sk_buff *skb, u8 tail_len)
+{
+	struct sk_buff *tail;
+	void *metadata;
+
+	if (unlikely(skb_cow_data(skb, tail_len, &tail) < 0))
+		return NULL;
+
+	metadata = pskb_put(skb, tail, tail_len);
+	memset(metadata, 0, tail_len);
+	return metadata;
+}
+
+/* Preparing HTT Metadata when utilized with ext MSDU */
+static int ath12k_dp_prepare_htt_metadata(struct sk_buff *skb)
+{
+	struct hal_tx_msdu_metadata *desc_ext;
+	u8 htt_desc_size;
+	/* Size rounded of multiple of 8 bytes */
+	u8 htt_desc_size_aligned;
+
+	htt_desc_size = sizeof(struct hal_tx_msdu_metadata);
+	htt_desc_size_aligned = ALIGN(htt_desc_size, HTT_META_DATA_ALIGNMENT);
+
+	desc_ext = ath12k_dp_metadata_align_skb(skb, htt_desc_size_aligned);
+	if (!desc_ext)
+		return -ENOMEM;
+
+	desc_ext->info0 = le32_encode_bits(1, HAL_TX_MSDU_METADATA_INFO0_ENCRYPT_FLAG) |
+			  le32_encode_bits(0, HAL_TX_MSDU_METADATA_INFO0_ENCRYPT_TYPE) |
+			  le32_encode_bits(1,
+					   HAL_TX_MSDU_METADATA_INFO0_HOST_TX_DESC_POOL);
+
+	return 0;
+}
+
+static void ath12k_dp_tx_move_payload(struct sk_buff *skb,
+				      unsigned long delta,
+				      bool head)
+{
+	unsigned long len = skb->len;
+
+	if (head) {
+		skb_push(skb, delta);
+		memmove(skb->data, skb->data + delta, len);
+		skb_trim(skb, len);
+	} else {
+		skb_put(skb, delta);
+		memmove(skb->data + delta, skb->data, len);
+		skb_pull(skb, delta);
+	}
+}
+
+static int ath12k_dp_tx_align_payload(struct ath12k_base *ab,
+				      struct sk_buff **pskb)
+{
+	u32 iova_mask = ab->hw_params->iova_mask;
+	unsigned long offset, delta1, delta2;
+	struct sk_buff *skb2, *skb = *pskb;
+	unsigned int headroom = skb_headroom(skb);
+	int tailroom = skb_tailroom(skb);
+	int ret = 0;
+
+	offset = (unsigned long)skb->data & iova_mask;
+	delta1 = offset;
+	delta2 = iova_mask - offset + 1;
+
+	if (headroom >= delta1) {
+		ath12k_dp_tx_move_payload(skb, delta1, true);
+	} else if (tailroom >= delta2) {
+		ath12k_dp_tx_move_payload(skb, delta2, false);
+	} else {
+		skb2 = skb_realloc_headroom(skb, iova_mask);
+		if (!skb2) {
+			ret = -ENOMEM;
+			goto out;
+		}
+
+		dev_kfree_skb_any(skb);
+
+		offset = (unsigned long)skb2->data & iova_mask;
+		if (offset)
+			ath12k_dp_tx_move_payload(skb2, offset, true);
+		*pskb = skb2;
+	}
+
+out:
+	return ret;
+}
+
+int ath12k_dp_tx(struct ath12k *ar, struct ath12k_link_vif *arvif,
 		 struct sk_buff *skb)
 {
 	struct ath12k_base *ab = ar->ab;
@@ -138,6 +230,7 @@ int ath12k_dp_tx(struct ath12k *ar, struct ath12k_vif *arvif,
 	struct sk_buff *skb_ext_desc;
 	struct hal_srng *tcl_ring;
 	struct ieee80211_hdr *hdr = (void *)skb->data;
+	struct ath12k_vif *ahvif = arvif->ahvif;
 	struct dp_tx_ring *tx_ring;
 	u8 pool_id;
 	u8 hal_ring_id;
@@ -145,13 +238,15 @@ int ath12k_dp_tx(struct ath12k *ar, struct ath12k_vif *arvif,
 	u8 ring_selector, ring_map = 0;
 	bool tcl_ring_retry;
 	bool msdu_ext_desc = false;
+	bool add_htt_metadata = false;
+	u32 iova_mask = ab->hw_params->iova_mask;
 
 	if (test_bit(ATH12K_FLAG_CRASH_FLUSH, &ar->ab->dev_flags))
 		return -ESHUTDOWN;
 
 	if (!(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) &&
 	    !ieee80211_is_data(hdr->frame_control))
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	pool_id = skb_get_queue_mapping(skb) & (ATH12K_HW_MAX_QUEUES - 1);
 
@@ -180,7 +275,7 @@ tcl_ring_sel:
 	ti.bank_id = arvif->bank_id;
 	ti.meta_data_flags = arvif->tcl_metadata;
 
-	if (arvif->tx_encap_type == HAL_TCL_ENCAP_TYPE_RAW &&
+	if (ahvif->tx_encap_type == HAL_TCL_ENCAP_TYPE_RAW &&
 	    test_bit(ATH12K_FLAG_HW_CRYPTO_DISABLED, &ar->ab->dev_flags)) {
 		if (skb_cb->flags & ATH12K_SKB_CIPHER_SET) {
 			ti.encrypt_type =
@@ -240,6 +335,23 @@ tcl_ring_sel:
 		goto fail_remove_tx_buf;
 	}
 
+	if (iova_mask &&
+	    (unsigned long)skb->data & iova_mask) {
+		ret = ath12k_dp_tx_align_payload(ab, &skb);
+		if (ret) {
+			ath12k_warn(ab, "failed to align TX buffer %d\n", ret);
+			/* don't bail out, give original buffer
+			 * a chance even unaligned.
+			 */
+			goto map;
+		}
+
+		/* hdr is pointing to a wrong place after alignment,
+		 * so refresh it for later use.
+		 */
+		hdr = (void *)skb->data;
+	}
+map:
 	ti.paddr = dma_map_single(ab->dev, skb->data, skb->len, DMA_TO_DEVICE);
 	if (dma_mapping_error(ab->dev, ti.paddr)) {
 		atomic_inc(&ab->soc_stats.tx_err.misc_fail);
@@ -248,12 +360,24 @@ tcl_ring_sel:
 		goto fail_remove_tx_buf;
 	}
 
+	if (!test_bit(ATH12K_FLAG_HW_CRYPTO_DISABLED, &ar->ab->dev_flags) &&
+	    !(skb_cb->flags & ATH12K_SKB_HW_80211_ENCAP) &&
+	    !(skb_cb->flags & ATH12K_SKB_CIPHER_SET) &&
+	    ieee80211_has_protected(hdr->frame_control)) {
+		/* Add metadata for sw encrypted vlan group traffic */
+		add_htt_metadata = true;
+		msdu_ext_desc = true;
+		ti.flags0 |= u32_encode_bits(1, HAL_TCL_DATA_CMD_INFO2_TO_FW);
+		ti.encap_type = HAL_TCL_ENCAP_TYPE_RAW;
+		ti.encrypt_type = HAL_ENCRYPT_TYPE_OPEN;
+	}
+
 	tx_desc->skb = skb;
 	tx_desc->mac_id = ar->pdev_idx;
 	ti.desc_id = tx_desc->desc_id;
 	ti.data_len = skb->len;
 	skb_cb->paddr = ti.paddr;
-	skb_cb->vif = arvif->vif;
+	skb_cb->vif = ahvif->vif;
 	skb_cb->ar = ar;
 
 	if (msdu_ext_desc) {
@@ -269,6 +393,15 @@ tcl_ring_sel:
 		msg = (struct hal_tx_msdu_ext_desc *)skb_ext_desc->data;
 		ath12k_hal_tx_cmd_ext_desc_setup(ab, msg, &ti);
 
+		if (add_htt_metadata) {
+			ret = ath12k_dp_prepare_htt_metadata(skb_ext_desc);
+			if (ret < 0) {
+				ath12k_dbg(ab, ATH12K_DBG_DP_TX,
+					   "Failed to add HTT meta data, dropping packet\n");
+				goto fail_unmap_dma;
+			}
+		}
+
 		ti.paddr = dma_map_single(ab->dev, skb_ext_desc->data,
 					  skb_ext_desc->len, DMA_TO_DEVICE);
 		ret = dma_mapping_error(ab->dev, ti.paddr);
@@ -352,15 +485,15 @@ static void ath12k_dp_tx_free_txbuf(struct ath12k_base *ab,
 	u8 pdev_id = ath12k_hw_mac_id_to_pdev_id(ab->hw_params, mac_id);
 
 	skb_cb = ATH12K_SKB_CB(msdu);
+	ar = ab->pdevs[pdev_id].ar;
 
 	dma_unmap_single(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
 	if (skb_cb->paddr_ext_desc)
 		dma_unmap_single(ab->dev, skb_cb->paddr_ext_desc,
 				 sizeof(struct hal_tx_msdu_ext_desc), DMA_TO_DEVICE);
 
-	dev_kfree_skb_any(msdu);
+	ieee80211_free_txskb(ar->ah->hw, msdu);
 
-	ar = ab->pdevs[pdev_id].ar;
 	if (atomic_dec_and_test(&ar->dp.num_tx_pending))
 		wake_up(&ar->dp.tx_empty_waitq);
 }
@@ -393,15 +526,19 @@ ath12k_dp_tx_htt_tx_complete_buf(struct ath12k_base *ab,
 	if (ts->acked) {
 		if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 			info->flags |= IEEE80211_TX_STAT_ACK;
-			info->status.ack_signal = ATH12K_DEFAULT_NOISE_FLOOR +
-						  ts->ack_rssi;
+			info->status.ack_signal = ts->ack_rssi;
+
+			if (!test_bit(WMI_TLV_SERVICE_HW_DB2DBM_CONVERSION_SUPPORT,
+				      ab->wmi_ab.svc_map))
+				info->status.ack_signal += ATH12K_DEFAULT_NOISE_FLOOR;
+
 			info->status.flags = IEEE80211_TX_STATUS_ACK_SIGNAL_VALID;
 		} else {
 			info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
 		}
 	}
 
-	ieee80211_tx_status_skb(ar->hw, msdu);
+	ieee80211_tx_status_skb(ath12k_ar_to_hw(ar), msdu);
 }
 
 static void
@@ -414,7 +551,7 @@ ath12k_dp_tx_process_htt_tx_complete(struct ath12k_base *ab,
 	struct ath12k_dp_htt_wbm_tx_status ts = {0};
 	enum hal_wbm_htt_tx_comp_status wbm_status;
 
-	status_desc = desc + HTT_TX_WBM_COMP_STATUS_OFFSET;
+	status_desc = desc;
 
 	wbm_status = le32_get_bits(status_desc->info0,
 				   HTT_TX_WBM_COMP_INFO0_STATUS);
@@ -448,6 +585,7 @@ static void ath12k_dp_tx_complete_msdu(struct ath12k *ar,
 				       struct hal_tx_status *ts)
 {
 	struct ath12k_base *ab = ar->ab;
+	struct ath12k_hw *ah = ar->ah;
 	struct ieee80211_tx_info *info;
 	struct ath12k_skb_cb *skb_cb;
 
@@ -466,12 +604,12 @@ static void ath12k_dp_tx_complete_msdu(struct ath12k *ar,
 	rcu_read_lock();
 
 	if (!rcu_dereference(ab->pdevs_active[ar->pdev_idx])) {
-		dev_kfree_skb_any(msdu);
+		ieee80211_free_txskb(ah->hw, msdu);
 		goto exit;
 	}
 
 	if (!skb_cb->vif) {
-		dev_kfree_skb_any(msdu);
+		ieee80211_free_txskb(ah->hw, msdu);
 		goto exit;
 	}
 
@@ -481,24 +619,46 @@ static void ath12k_dp_tx_complete_msdu(struct ath12k *ar,
 	/* skip tx rate update from ieee80211_status*/
 	info->status.rates[0].idx = -1;
 
-	if (ts->status == HAL_WBM_TQM_REL_REASON_FRAME_ACKED &&
-	    !(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
-		info->flags |= IEEE80211_TX_STAT_ACK;
-		info->status.ack_signal = ATH12K_DEFAULT_NOISE_FLOOR +
-					  ts->ack_rssi;
-		info->status.flags = IEEE80211_TX_STATUS_ACK_SIGNAL_VALID;
-	}
+	switch (ts->status) {
+	case HAL_WBM_TQM_REL_REASON_FRAME_ACKED:
+		if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
+			info->flags |= IEEE80211_TX_STAT_ACK;
+			info->status.ack_signal = ts->ack_rssi;
 
-	if (ts->status == HAL_WBM_TQM_REL_REASON_CMD_REMOVE_TX &&
-	    (info->flags & IEEE80211_TX_CTL_NO_ACK))
-		info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
+			if (!test_bit(WMI_TLV_SERVICE_HW_DB2DBM_CONVERSION_SUPPORT,
+				      ab->wmi_ab.svc_map))
+				info->status.ack_signal += ATH12K_DEFAULT_NOISE_FLOOR;
+
+			info->status.flags = IEEE80211_TX_STATUS_ACK_SIGNAL_VALID;
+		}
+		break;
+	case HAL_WBM_TQM_REL_REASON_CMD_REMOVE_TX:
+		if (info->flags & IEEE80211_TX_CTL_NO_ACK) {
+			info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
+			break;
+		}
+		fallthrough;
+	case HAL_WBM_TQM_REL_REASON_CMD_REMOVE_MPDU:
+	case HAL_WBM_TQM_REL_REASON_DROP_THRESHOLD:
+	case HAL_WBM_TQM_REL_REASON_CMD_REMOVE_AGED_FRAMES:
+		/* The failure status is due to internal firmware tx failure
+		 * hence drop the frame; do not update the status of frame to
+		 * the upper layer
+		 */
+		ieee80211_free_txskb(ah->hw, msdu);
+		goto exit;
+	default:
+		ath12k_dbg(ab, ATH12K_DBG_DP_TX, "tx frame is not acked status %d\n",
+			   ts->status);
+		break;
+	}
 
 	/* NOTE: Tx rate status reporting. Tx completion status does not have
 	 * necessary information (for example nss) to build the tx rate.
 	 * Might end up reporting it out-of-band from HTT stats.
 	 */
 
-	ieee80211_tx_status_skb(ar->hw, msdu);
+	ieee80211_tx_status_skb(ath12k_ar_to_hw(ar), msdu);
 
 exit:
 	rcu_read_unlock();
@@ -669,14 +829,6 @@ ath12k_dp_tx_get_ring_id_type(struct ath12k_base *ab,
 		*htt_ring_id = HTT_RXDMA_MONITOR_DESC_RING;
 		*htt_ring_type = HTT_SW_TO_HW_RING;
 		break;
-	case HAL_TX_MONITOR_BUF:
-		*htt_ring_id = HTT_TX_MON_HOST2MON_BUF_RING;
-		*htt_ring_type = HTT_SW_TO_HW_RING;
-		break;
-	case HAL_TX_MONITOR_DST:
-		*htt_ring_id = HTT_TX_MON_MON2HOST_DEST_RING;
-		*htt_ring_type = HTT_HW_TO_SW_RING;
-		break;
 	default:
 		ath12k_warn(ab, "Unsupported ring type in DP :%d\n", ring_type);
 		ret = -EINVAL;
@@ -837,7 +989,7 @@ int ath12k_dp_tx_htt_h2t_ver_req_msg(struct ath12k_base *ab)
 	if (dp->htt_tgt_ver_major != HTT_TARGET_VERSION_MAJOR) {
 		ath12k_err(ab, "unsupported htt major version %d supported version is %d\n",
 			   dp->htt_tgt_ver_major, HTT_TARGET_VERSION_MAJOR);
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 	}
 
 	return 0;
@@ -854,7 +1006,7 @@ int ath12k_dp_tx_htt_h2t_ppdu_stats_req(struct ath12k *ar, u32 mask)
 	int ret;
 	int i;
 
-	for (i = 0; i < ab->hw_params->num_rxmda_per_pdev; i++) {
+	for (i = 0; i < ab->hw_params->num_rxdma_per_pdev; i++) {
 		skb = ath12k_htc_alloc_skb(ab, len);
 		if (!skb)
 			return -ENOMEM;
@@ -964,6 +1116,26 @@ int ath12k_dp_tx_htt_rx_filter_setup(struct ath12k_base *ab, u32 ring_id,
 					 HTT_RX_RING_SELECTION_CFG_RX_ATTENTION_OFFSET);
 	}
 
+	if (tlv_filter->rx_mpdu_start_wmask > 0 &&
+	    tlv_filter->rx_msdu_end_wmask > 0) {
+		cmd->info2 |=
+			le32_encode_bits(true,
+					 HTT_RX_RING_SELECTION_CFG_WORD_MASK_COMPACT_SET);
+		cmd->rx_mpdu_start_end_mask =
+			le32_encode_bits(tlv_filter->rx_mpdu_start_wmask,
+					 HTT_RX_RING_SELECTION_CFG_RX_MPDU_START_MASK);
+		/* mpdu_end is not used for any hardwares so far
+		 * please assign it in future if any chip is
+		 * using through hal ops
+		 */
+		cmd->rx_mpdu_start_end_mask |=
+			le32_encode_bits(tlv_filter->rx_mpdu_end_wmask,
+					 HTT_RX_RING_SELECTION_CFG_RX_MPDU_END_MASK);
+		cmd->rx_msdu_end_word_mask =
+			le32_encode_bits(tlv_filter->rx_msdu_end_wmask,
+					 HTT_RX_RING_SELECTION_CFG_RX_MSDU_END_MASK);
+	}
+
 	ret = ath12k_htc_send(&ab->htc, ab->dp.eid, skb);
 	if (ret)
 		goto err_free;
@@ -987,6 +1159,7 @@ ath12k_dp_tx_htt_h2t_ext_stats_req(struct ath12k *ar, u8 type,
 	struct htt_ext_stats_cfg_cmd *cmd;
 	int len = sizeof(*cmd);
 	int ret;
+	u32 pdev_id;
 
 	skb = ath12k_htc_alloc_skb(ab, len);
 	if (!skb)
@@ -998,7 +1171,8 @@ ath12k_dp_tx_htt_h2t_ext_stats_req(struct ath12k *ar, u8 type,
 	memset(cmd, 0, sizeof(*cmd));
 	cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_EXT_STATS_CFG;
 
-	cmd->hdr.pdev_mask = 1 << ar->pdev->pdev_id;
+	pdev_id = ath12k_mac_get_target_pdev_id(ar);
+	cmd->hdr.pdev_mask = 1 << pdev_id;
 
 	cmd->hdr.stats_type = type;
 	cmd->cfg_param0 = cpu_to_le32(cfg_params->cfg0);
@@ -1024,13 +1198,7 @@ int ath12k_dp_tx_htt_monitor_mode_ring_config(struct ath12k *ar, bool reset)
 	struct ath12k_base *ab = ar->ab;
 	int ret;
 
-	ret = ath12k_dp_tx_htt_tx_monitor_mode_ring_config(ar, reset);
-	if (ret) {
-		ath12k_err(ab, "failed to setup tx monitor filter %d\n", ret);
-		return ret;
-	}
-
-	ret = ath12k_dp_tx_htt_tx_monitor_mode_ring_config(ar, reset);
+	ret = ath12k_dp_tx_htt_rx_monitor_mode_ring_config(ar, reset);
 	if (ret) {
 		ath12k_err(ab, "failed to setup rx monitor filter %d\n", ret);
 		return ret;
@@ -1189,31 +1357,3 @@ err_free:
 	dev_kfree_skb_any(skb);
 	return ret;
 }
-
-int ath12k_dp_tx_htt_tx_monitor_mode_ring_config(struct ath12k *ar, bool reset)
-{
-	struct ath12k_base *ab = ar->ab;
-	struct ath12k_dp *dp = &ab->dp;
-	struct htt_tx_ring_tlv_filter tlv_filter = {0};
-	int ret, ring_id;
-
-	ring_id = dp->tx_mon_buf_ring.refill_buf_ring.ring_id;
-
-	/* TODO: Need to set upstream/downstream tlv filters
-	 * here
-	 */
-
-	if (ab->hw_params->rxdma1_enable) {
-		ret = ath12k_dp_tx_htt_tx_filter_setup(ar->ab, ring_id, 0,
-						       HAL_TX_MONITOR_BUF,
-						       DP_RXDMA_REFILL_RING_SIZE,
-						       &tlv_filter);
-		if (ret) {
-			ath12k_err(ab,
-				   "failed to setup filter for monitor buf %d\n", ret);
-			return ret;
-		}
-	}
-
-	return 0;
-}