[PATCH 15/50] wifi: ath12k: add dp_rx.c

Kalle Valo
2022-08-12T16:09:28Z

From: Kalle Valo <quic_kvalo@quicinc.com>

(Patches split into one patch per file for easier review, but the final
commit will be one big patch. See the cover letter for more info.)

Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
---
drivers/net/wireless/ath/ath12k/dp_rx.c | 4308 +++++++++++++++++++++++++++++++
1 file changed, 4308 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/dp_rx.c b/drivers/net/wireless/ath/ath12k/dp_rx.c
new file mode 100644
index 000000000000..1e1a577ea0de
--- /dev/null
+++ b/drivers/net/wireless/ath/ath12k/dp_rx.c
@@ -0,0 +1,4308 @@
+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/ieee80211.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <crypto/hash.h>
+#include "core.h"
+#include "debug.h"
+#include "hal_desc.h"
+#include "hw.h"
+#include "dp_rx.h"
+#include "hal_rx.h"
+#include "dp_tx.h"
+#include "peer.h"
+#include "dp_mon.h"
+
+#define ATH12K_DP_RX_FRAGMENT_TIMEOUT_MS (2 * HZ)
+
+static enum hal_encrypt_type ath12k_dp_rx_h_enctype(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ if (!ab->hw_params->hal_ops->rx_desc_encrypt_valid(desc))
+ return HAL_ENCRYPT_TYPE_OPEN;
+
+ return ab->hw_params->hal_ops->rx_desc_get_encrypt_type(desc);
+}
+
+u8 ath12k_dp_rx_h_decap_type(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_decap_type(desc);
+}
+
+static u8 ath12k_dp_rx_h_mesh_ctl_present(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_mesh_ctl(desc);
+}
+
+static bool ath12k_dp_rx_h_seq_ctrl_valid(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_mpdu_seq_ctl_vld(desc);
+}
+
+static bool ath12k_dp_rx_h_fc_valid(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_mpdu_fc_valid(desc);
+}
+
+static bool ath12k_dp_rx_h_more_frags(struct ath12k_base *ab,
+ struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr;
+
+ hdr = (struct ieee80211_hdr *)(skb->data + ab->hw_params->hal_desc_sz);
+ return ieee80211_has_morefrags(hdr->frame_control);
+}
+
+static u16 ath12k_dp_rx_h_frag_no(struct ath12k_base *ab,
+ struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr;
+
+ hdr = (struct ieee80211_hdr *)(skb->data + ab->hw_params->hal_desc_sz);
+ return le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
+}
+
+static u16 ath12k_dp_rx_h_seq_no(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_mpdu_start_seq_no(desc);
+}
+
+static bool ath12k_dp_rx_h_msdu_done(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->dp_rx_h_msdu_done(desc);
+}
+
+static bool ath12k_dp_rx_h_l4_cksum_fail(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->dp_rx_h_l4_cksum_fail(desc);
+}
+
+static bool ath12k_dp_rx_h_ip_cksum_fail(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->dp_rx_h_ip_cksum_fail(desc);
+}
+
+static bool ath12k_dp_rx_h_is_decrypted(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->dp_rx_h_is_decrypted(desc);
+}
+
+u32 ath12k_dp_rx_h_mpdu_err(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->dp_rx_h_mpdu_err(desc);
+}
+
+static u16 ath12k_dp_rx_h_msdu_len(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_msdu_len(desc);
+}
+
+static u8 ath12k_dp_rx_h_sgi(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_msdu_sgi(desc);
+}
+
+static u8 ath12k_dp_rx_h_rate_mcs(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_msdu_rate_mcs(desc);
+}
+
+static u8 ath12k_dp_rx_h_rx_bw(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_msdu_rx_bw(desc);
+}
+
+static u32 ath12k_dp_rx_h_freq(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_msdu_freq(desc);
+}
+
+static u8 ath12k_dp_rx_h_pkt_type(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_msdu_pkt_type(desc);
+}
+
+static u8 ath12k_dp_rx_h_nss(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return hweight8(ab->hw_params->hal_ops->rx_desc_get_msdu_nss(desc));
+}
+
+static u8 ath12k_dp_rx_h_tid(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_mpdu_tid(desc);
+}
+
+static u16 ath12k_dp_rx_h_peer_id(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_mpdu_peer_id(desc);
+}
+
+u8 ath12k_dp_rx_h_l3pad(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_l3_pad_bytes(desc);
+}
+
+static bool ath12k_dp_rx_h_first_msdu(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_first_msdu(desc);
+}
+
+static bool ath12k_dp_rx_h_last_msdu(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_last_msdu(desc);
+}
+
+static void ath12k_dp_rx_desc_end_tlv_copy(struct ath12k_base *ab,
+ struct hal_rx_desc *fdesc,
+ struct hal_rx_desc *ldesc)
+{
+ ab->hw_params->hal_ops->rx_desc_copy_end_tlv(fdesc, ldesc);
+}
+
+static void ath12k_dp_rxdesc_set_msdu_len(struct ath12k_base *ab,
+ struct hal_rx_desc *desc,
+ u16 len)
+{
+ ab->hw_params->hal_ops->rx_desc_set_msdu_len(desc, len);
+}
+
+static bool ath12k_dp_rx_h_is_mcbc(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_is_mcbc(desc);
+}
+
+static bool ath12k_dp_rxdesc_mac_addr2_valid(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_mac_addr2_valid(desc);
+}
+
+static u8 *ath12k_dp_rxdesc_get_mpdu_start_addr2(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_mpdu_start_addr2(desc);
+}
+
+static void ath12k_dp_rx_desc_get_dot11_hdr(struct ath12k_base *ab,
+ struct hal_rx_desc *desc,
+ struct ieee80211_hdr *hdr)
+{
+ ab->hw_params->hal_ops->rx_desc_get_dot11_hdr(desc, hdr);
+}
+
+static void ath12k_dp_rx_desc_get_crypto_header(struct ath12k_base *ab,
+ struct hal_rx_desc *desc,
+ u8 *crypto_hdr,
+ enum hal_encrypt_type enctype)
+{
+ ab->hw_params->hal_ops->rx_desc_get_crypto_header(desc, crypto_hdr, enctype);
+}
+
+static u16 ath12k_dp_rxdesc_get_mpdu_frame_ctrl(struct ath12k_base *ab,
+ struct hal_rx_desc *desc)
+{
+ return ab->hw_params->hal_ops->rx_desc_get_mpdu_frame_ctl(desc);
+}
+
+static void ath12k_dp_service_mon_ring(struct timer_list *t)
+{
+ struct ath12k_base *ab = from_timer(ab, t, mon_reap_timer);
+ int i;
+
+ for (i = 0; i < ab->hw_params->num_rxmda_per_pdev; i++)
+ ath12k_dp_mon_process_ring(ab, i, NULL, DP_MON_SERVICE_BUDGET,
+ ATH12K_DP_RX_MONITOR_MODE);
+
+ mod_timer(&ab->mon_reap_timer, jiffies +
+ msecs_to_jiffies(ATH12K_MON_TIMER_INTERVAL));
+}
+
+static int ath12k_dp_purge_mon_ring(struct ath12k_base *ab)
+{
+ int i, reaped = 0;
+ unsigned long timeout = jiffies + msecs_to_jiffies(DP_MON_PURGE_TIMEOUT_MS);
+
+ do {
+ for (i = 0; i < ab->hw_params->num_rxmda_per_pdev; i++)
+ reaped += ath12k_dp_mon_process_ring(ab, i, NULL,
+ DP_MON_SERVICE_BUDGET,
+ ATH12K_DP_RX_MONITOR_MODE);
+
+ /* nothing more to reap */
+ if (reaped < DP_MON_SERVICE_BUDGET)
+ return 0;
+
+ } while (time_before(jiffies, timeout));
+
+ ath12k_warn(ab, "dp mon ring purge timeout");
+
+ return -ETIMEDOUT;
+}
+
+/* Returns number of Rx buffers replenished */
+int ath12k_dp_rx_bufs_replenish(struct ath12k_base *ab, int mac_id,
+ struct dp_rxdma_ring *rx_ring,
+ int req_entries,
+ enum hal_rx_buf_return_buf_manager mgr,
+ bool hw_cc)
+{
+ struct ath12k_buffer_addr *desc;
+ struct hal_srng *srng;
+ struct sk_buff *skb;
+ int num_free;
+ int num_remain;
+ int buf_id;
+ u32 cookie;
+ dma_addr_t paddr;
+ struct ath12k_dp *dp = &ab->dp;
+ struct ath12k_rx_desc_info *rx_desc;
+
+ req_entries = min(req_entries, rx_ring->bufs_max);
+
+ srng = &ab->hal.srng_list[rx_ring->refill_buf_ring.ring_id];
+
+ spin_lock_bh(&srng->lock);
+
+ ath12k_hal_srng_access_begin(ab, srng);
+
+ num_free = ath12k_hal_srng_src_num_free(ab, srng, true);
+ if (!req_entries && (num_free > (rx_ring->bufs_max * 3) / 4))
+ req_entries = num_free;
+
+ req_entries = min(num_free, req_entries);
+ num_remain = req_entries;
+
+ while (num_remain > 0) {
+ skb = dev_alloc_skb(DP_RX_BUFFER_SIZE +
+ DP_RX_BUFFER_ALIGN_SIZE);
+ if (!skb)
+ break;
+
+ if (!IS_ALIGNED((unsigned long)skb->data,
+ DP_RX_BUFFER_ALIGN_SIZE)) {
+ skb_pull(skb,
+ PTR_ALIGN(skb->data, DP_RX_BUFFER_ALIGN_SIZE) -
+ skb->data);
+ }
+
+ paddr = dma_map_single(ab->dev, skb->data,
+ skb->len + skb_tailroom(skb),
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(ab->dev, paddr))
+ goto fail_free_skb;
+
+ if (hw_cc) {
+ spin_lock_bh(&dp->rx_desc_lock);
+
+ /* Get desc from free list and store in used list
+ * for cleanup purposes
+ *
+ * TODO: pass the removed descs rather than
+ * add/read to optimize
+ */
+ rx_desc = list_first_entry_or_null(&dp->rx_desc_free_list,
+ struct ath12k_rx_desc_info,
+ list);
+ if (!rx_desc) {
+ spin_unlock_bh(&dp->rx_desc_lock);
+ goto fail_dma_unmap;
+ }
+
+ rx_desc->skb = skb;
+ cookie = rx_desc->cookie;
+ list_del(&rx_desc->list);
+ list_add_tail(&rx_desc->list, &dp->rx_desc_used_list);
+
+ spin_unlock_bh(&dp->rx_desc_lock);
+ } else {
+ spin_lock_bh(&rx_ring->idr_lock);
+ buf_id = idr_alloc(&rx_ring->bufs_idr, skb, 0,
+ rx_ring->bufs_max * 3, GFP_ATOMIC);
+ spin_unlock_bh(&rx_ring->idr_lock);
+ if (buf_id < 0)
+ goto fail_idr_remove;
+ cookie = u32_encode_bits(mac_id,
+ DP_RXDMA_BUF_COOKIE_PDEV_ID) |
+ u32_encode_bits(buf_id,
+ DP_RXDMA_BUF_COOKIE_BUF_ID);
+ }
+
+ desc = ath12k_hal_srng_src_get_next_entry(ab, srng);
+ if (!desc)
+ goto fail_list_desc_add;
+
+ ATH12K_SKB_RXCB(skb)->paddr = paddr;
+
+ num_remain--;
+
+ ath12k_hal_rx_buf_addr_info_set(desc, paddr, cookie, mgr);
+ }
+
+ ath12k_hal_srng_access_end(ab, srng);
+
+ spin_unlock_bh(&srng->lock);
+
+ return req_entries - num_remain;
+
+fail_list_desc_add:
+ if (hw_cc) {
+ spin_lock_bh(&dp->rx_desc_lock);
+ list_del(&rx_desc->list);
+ list_add_tail(&rx_desc->list, &dp->rx_desc_free_list);
+ rx_desc->skb = NULL;
+ spin_unlock_bh(&dp->rx_desc_lock);
+ }
+fail_idr_remove:
+ spin_lock_bh(&rx_ring->idr_lock);
+ idr_remove(&rx_ring->bufs_idr, buf_id);
+ spin_unlock_bh(&rx_ring->idr_lock);
+fail_dma_unmap:
+ dma_unmap_single(ab->dev, paddr, skb->len + skb_tailroom(skb),
+ DMA_FROM_DEVICE);
+fail_free_skb:
+ dev_kfree_skb_any(skb);
+
+ ath12k_hal_srng_access_end(ab, srng);
+
+ spin_unlock_bh(&srng->lock);
+
+ return req_entries - num_remain;
+}
+
+static int ath12k_dp_rxdma_buf_ring_free(struct ath12k_base *ab,
+ struct dp_rxdma_ring *rx_ring)
+{
+ struct sk_buff *skb;
+ int buf_id;
+
+ spin_lock_bh(&rx_ring->idr_lock);
+ idr_for_each_entry(&rx_ring->bufs_idr, skb, buf_id) {
+ idr_remove(&rx_ring->bufs_idr, buf_id);
+ /* TODO: Understand where internal driver does this dma_unmap
+ * of rxdma_buffer.
+ */
+ dma_unmap_single(ab->dev, ATH12K_SKB_RXCB(skb)->paddr,
+ skb->len + skb_tailroom(skb), DMA_FROM_DEVICE);
+ dev_kfree_skb_any(skb);
+ }
+
+ idr_destroy(&rx_ring->bufs_idr);
+ spin_unlock_bh(&rx_ring->idr_lock);
+
+ return 0;
+}
+
+static int ath12k_dp_rxdma_buf_free(struct ath12k_base *ab)
+{
+ struct ath12k_dp *dp = &ab->dp;
+ struct dp_rxdma_ring *rx_ring = &dp->rx_refill_buf_ring;
+
+ ath12k_dp_rxdma_buf_ring_free(ab, rx_ring);
+
+ rx_ring = &dp->rxdma_mon_buf_ring;
+ ath12k_dp_rxdma_buf_ring_free(ab, rx_ring);
+
+ rx_ring = &dp->tx_mon_buf_ring;
+ ath12k_dp_rxdma_buf_ring_free(ab, rx_ring);
+
+ return 0;
+}
+
+static int ath12k_dp_rxdma_ring_buf_setup(struct ath12k_base *ab,
+ struct dp_rxdma_ring *rx_ring,
+ u32 ringtype)
+{
+ int num_entries;
+
+ num_entries = rx_ring->refill_buf_ring.size /
+ ath12k_hal_srng_get_entrysize(ab, ringtype);
+
+ rx_ring->bufs_max = num_entries;
+ if ((ringtype == HAL_RXDMA_MONITOR_BUF) || (ringtype == HAL_TX_MONITOR_BUF))
+ ath12k_dp_mon_buf_replenish(ab, rx_ring, num_entries);
+ else
+ ath12k_dp_rx_bufs_replenish(ab, 0, rx_ring, num_entries,
+ ab->hw_params->hal_params->rx_buf_rbm,
+ ringtype == HAL_RXDMA_BUF);
+ return 0;
+}
+
+static int ath12k_dp_rxdma_buf_setup(struct ath12k_base *ab)
+{
+ struct ath12k_dp *dp = &ab->dp;
+ struct dp_rxdma_ring *rx_ring = &dp->rx_refill_buf_ring;
+ int ret;
+
+ ret = ath12k_dp_rxdma_ring_buf_setup(ab, rx_ring,
+ HAL_RXDMA_BUF);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to setup HAL_RXDMA_BUF\n");
+ return ret;
+ }
+
+ if (ab->hw_params->rxdma1_enable) {
+ rx_ring = &dp->rxdma_mon_buf_ring;
+ ret = ath12k_dp_rxdma_ring_buf_setup(ab, rx_ring,
+ HAL_RXDMA_MONITOR_BUF);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to setup HAL_RXDMA_MONITOR_BUF\n");
+ return ret;
+ }
+
+ rx_ring = &dp->tx_mon_buf_ring;
+ ret = ath12k_dp_rxdma_ring_buf_setup(ab, rx_ring,
+ HAL_TX_MONITOR_BUF);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to setup HAL_TX_MONITOR_BUF\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static void ath12k_dp_rx_pdev_srng_free(struct ath12k *ar)
+{
+ struct ath12k_pdev_dp *dp = &ar->dp;
+ struct ath12k_base *ab = ar->ab;
+ int i;
+
+ for (i = 0; i < ab->hw_params->num_rxmda_per_pdev; i++) {
+ ath12k_dp_srng_cleanup(ab, &dp->rxdma_mon_dst_ring[i]);
+ ath12k_dp_srng_cleanup(ab, &dp->tx_mon_dst_ring[i]);
+ }
+}
+
+void ath12k_dp_rx_pdev_reo_cleanup(struct ath12k_base *ab)
+{
+ struct ath12k_dp *dp = &ab->dp;
+ int i;
+
+ for (i = 0; i < DP_REO_DST_RING_MAX; i++)
+ ath12k_dp_srng_cleanup(ab, &dp->reo_dst_ring[i]);
+}
+
+int ath12k_dp_rx_pdev_reo_setup(struct ath12k_base *ab)
+{
+ struct ath12k_dp *dp = &ab->dp;
+ int ret;
+ int i;
+
+ for (i = 0; i < DP_REO_DST_RING_MAX; i++) {
+ ret = ath12k_dp_srng_setup(ab, &dp->reo_dst_ring[i],
+ HAL_REO_DST, i, 0,
+ DP_REO_DST_RING_SIZE);
+ if (ret) {
+ ath12k_warn(ab, "failed to setup reo_dst_ring\n");
+ goto err_reo_cleanup;
+ }
+ }
+
+ return 0;
+
+err_reo_cleanup:
+ ath12k_dp_rx_pdev_reo_cleanup(ab);
+
+ return ret;
+}
+
+static int ath12k_dp_rx_pdev_srng_alloc(struct ath12k *ar)
+{
+ struct ath12k_pdev_dp *dp = &ar->dp;
+ struct ath12k_base *ab = ar->ab;
+ int i;
+ int ret;
+ u32 mac_id = dp->mac_id;
+
+ if (!ar->ab->hw_params->rxdma1_enable) {
+ /* init mon status buffer reap timer */
+ timer_setup(&ar->ab->mon_reap_timer,
+ ath12k_dp_service_mon_ring, 0);
+ return 0;
+ }
+
+ for (i = 0; i < ab->hw_params->num_rxmda_per_pdev; i++) {
+ ret = ath12k_dp_srng_setup(ar->ab,
+ &dp->rxdma_mon_dst_ring[i],
+ HAL_RXDMA_MONITOR_DST,
+ 0, mac_id + i,
+ DP_RXDMA_MONITOR_DST_RING_SIZE);
+ if (ret) {
+ ath12k_warn(ar->ab,
+ "failed to setup HAL_RXDMA_MONITOR_DST\n");
+ return ret;
+ }
+
+ ret = ath12k_dp_srng_setup(ar->ab,
+ &dp->tx_mon_dst_ring[i],
+ HAL_TX_MONITOR_DST,
+ 0, mac_id + i,
+ DP_TX_MONITOR_DEST_RING_SIZE);
+ if (ret) {
+ ath12k_warn(ar->ab,
+ "failed to setup HAL_TX_MONITOR_DST\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+void ath12k_dp_rx_reo_cmd_list_cleanup(struct ath12k_base *ab)
+{
+ struct ath12k_dp *dp = &ab->dp;
+ struct ath12k_dp_rx_reo_cmd *cmd, *tmp;
+ struct ath12k_dp_rx_reo_cache_flush_elem *cmd_cache, *tmp_cache;
+
+ spin_lock_bh(&dp->reo_cmd_lock);
+ list_for_each_entry_safe(cmd, tmp, &dp->reo_cmd_list, list) {
+ list_del(&cmd->list);
+ dma_unmap_single(ab->dev, cmd->data.paddr,
+ cmd->data.size, DMA_BIDIRECTIONAL);
+ kfree(cmd->data.vaddr);
+ kfree(cmd);
+ }
+
+ list_for_each_entry_safe(cmd_cache, tmp_cache,
+ &dp->reo_cmd_cache_flush_list, list) {
+ list_del(&cmd_cache->list);
+ dp->reo_cmd_cache_flush_count--;
+ dma_unmap_single(ab->dev, cmd_cache->data.paddr,
+ cmd_cache->data.size, DMA_BIDIRECTIONAL);
+ kfree(cmd_cache->data.vaddr);
+ kfree(cmd_cache);
+ }
+ spin_unlock_bh(&dp->reo_cmd_lock);
+}
+
+static void ath12k_dp_reo_cmd_free(struct ath12k_dp *dp, void *ctx,
+ enum hal_reo_cmd_status status)
+{
+ struct ath12k_dp_rx_tid *rx_tid = ctx;
+
+ if (status != HAL_REO_CMD_SUCCESS)
+ ath12k_warn(dp->ab, "failed to flush rx tid hw desc, tid %d status %d\n",
+ rx_tid->tid, status);
+
+ dma_unmap_single(dp->ab->dev, rx_tid->paddr, rx_tid->size,
+ DMA_BIDIRECTIONAL);
+ kfree(rx_tid->vaddr);
+}
+
+static int ath12k_dp_reo_cmd_send(struct ath12k_base *ab, struct ath12k_dp_rx_tid *rx_tid,
+ enum hal_reo_cmd_type type,
+ struct ath12k_hal_reo_cmd *cmd,
+ void (*cb)(struct ath12k_dp *dp, void *ctx,
+ enum hal_reo_cmd_status status))
+{
+ struct ath12k_dp *dp = &ab->dp;
+ struct ath12k_dp_rx_reo_cmd *dp_cmd;
+ struct hal_srng *cmd_ring;
+ int cmd_num;
+
+ cmd_ring = &ab->hal.srng_list[dp->reo_cmd_ring.ring_id];
+ cmd_num = ath12k_hal_reo_cmd_send(ab, cmd_ring, type, cmd);
+
+ /* cmd_num should start from 1, during failure return the error code */
+ if (cmd_num < 0)
+ return cmd_num;
+
+ /* reo cmd ring descriptors has cmd_num starting from 1 */
+ if (cmd_num == 0)
+ return -EINVAL;
+
+ if (!cb)
+ return 0;
+
+ /* Can this be optimized so that we keep the pending command list only
+ * for tid delete command to free up the resoruce on the command status
+ * indication?
+ */
+ dp_cmd = kzalloc(sizeof(*dp_cmd), GFP_ATOMIC);
+
+ if (!dp_cmd)
+ return -ENOMEM;
+
+ memcpy(&dp_cmd->data, rx_tid, sizeof(struct ath12k_dp_rx_tid));
+ dp_cmd->cmd_num = cmd_num;
+ dp_cmd->handler = cb;
+
+ spin_lock_bh(&dp->reo_cmd_lock);
+ list_add_tail(&dp_cmd->list, &dp->reo_cmd_list);
+ spin_unlock_bh(&dp->reo_cmd_lock);
+
+ return 0;
+}
+
+static void ath12k_dp_reo_cache_flush(struct ath12k_base *ab,
+ struct ath12k_dp_rx_tid *rx_tid)
+{
+ struct ath12k_hal_reo_cmd cmd = {0};
+ unsigned long tot_desc_sz, desc_sz;
+ int ret;
+
+ tot_desc_sz = rx_tid->size;
+ desc_sz = ath12k_hal_reo_qdesc_size(0, HAL_DESC_REO_NON_QOS_TID);
+
+ while (tot_desc_sz > desc_sz) {
+ tot_desc_sz -= desc_sz;
+ cmd.addr_lo = lower_32_bits(rx_tid->paddr + tot_desc_sz);
+ cmd.addr_hi = upper_32_bits(rx_tid->paddr);
+ ret = ath12k_dp_reo_cmd_send(ab, rx_tid,
+ HAL_REO_CMD_FLUSH_CACHE, &cmd,
+ NULL);
+ if (ret)
+ ath12k_warn(ab,
+ "failed to send HAL_REO_CMD_FLUSH_CACHE, tid %d (%d)\n",
+ rx_tid->tid, ret);
+ }
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.addr_lo = lower_32_bits(rx_tid->paddr);
+ cmd.addr_hi = upper_32_bits(rx_tid->paddr);
+ cmd.flag |= HAL_REO_CMD_FLG_NEED_STATUS;
+ ret = ath12k_dp_reo_cmd_send(ab, rx_tid,
+ HAL_REO_CMD_FLUSH_CACHE,
+ &cmd, ath12k_dp_reo_cmd_free);
+ if (ret) {
+ ath12k_err(ab, "failed to send HAL_REO_CMD_FLUSH_CACHE cmd, tid %d (%d)\n",
+ rx_tid->tid, ret);
+ dma_unmap_single(ab->dev, rx_tid->paddr, rx_tid->size,
+ DMA_BIDIRECTIONAL);
+ kfree(rx_tid->vaddr);
+ }
+}
+
+static void ath12k_dp_rx_tid_del_func(struct ath12k_dp *dp, void *ctx,
+ enum hal_reo_cmd_status status)
+{
+ struct ath12k_base *ab = dp->ab;
+ struct ath12k_dp_rx_tid *rx_tid = ctx;
+ struct ath12k_dp_rx_reo_cache_flush_elem *elem, *tmp;
+
+ if (status == HAL_REO_CMD_DRAIN) {
+ goto free_desc;
+ } else if (status != HAL_REO_CMD_SUCCESS) {
+ /* Shouldn't happen! Cleanup in case of other failure? */
+ ath12k_warn(ab, "failed to delete rx tid %d hw descriptor %d\n",
+ rx_tid->tid, status);
+ return;
+ }
+
+ elem = kzalloc(sizeof(*elem), GFP_ATOMIC);
+ if (!elem)
+ goto free_desc;
+
+ elem->ts = jiffies;
+ memcpy(&elem->data, rx_tid, sizeof(*rx_tid));
+
+ spin_lock_bh(&dp->reo_cmd_lock);
+ list_add_tail(&elem->list, &dp->reo_cmd_cache_flush_list);
+ dp->reo_cmd_cache_flush_count++;
+
+ /* Flush and invalidate aged REO desc from HW cache */
+ list_for_each_entry_safe(elem, tmp, &dp->reo_cmd_cache_flush_list,
+ list) {
+ if (dp->reo_cmd_cache_flush_count > ATH12K_DP_RX_REO_DESC_FREE_THRES ||
+ time_after(jiffies, elem->ts +
+ msecs_to_jiffies(ATH12K_DP_RX_REO_DESC_FREE_TIMEOUT_MS))) {
+ list_del(&elem->list);
+ dp->reo_cmd_cache_flush_count--;
+ spin_unlock_bh(&dp->reo_cmd_lock);
+
+ ath12k_dp_reo_cache_flush(ab, &elem->data);
+ kfree(elem);
+ spin_lock_bh(&dp->reo_cmd_lock);
+ }
+ }
+ spin_unlock_bh(&dp->reo_cmd_lock);
+
+ return;
+free_desc:
+ dma_unmap_single(ab->dev, rx_tid->paddr, rx_tid->size,
+ DMA_BIDIRECTIONAL);
+ kfree(rx_tid->vaddr);
+}
+
+static void ath12k_peer_rx_tid_qref_setup(struct ath12k_base *ab, u16 peer_id, u16 tid,
+ dma_addr_t paddr)
+{
+ struct ath12k_reo_queue_ref *qref;
+ struct ath12k_dp *dp = &ab->dp;
+
+ if (!ab->hw_params->reoq_lut_support)
+ return;
+
+ /* TODO: based on ML peer or not, select the LUT. below assumes non
+ * ML peer
+ */
+ qref = (struct ath12k_reo_queue_ref *)dp->reoq_lut.vaddr +
+ (peer_id * (IEEE80211_NUM_TIDS + 1) + tid);
+
+ qref->info0 = u32_encode_bits(lower_32_bits(paddr),
+ BUFFER_ADDR_INFO0_ADDR);
+ qref->info1 = u32_encode_bits(upper_32_bits(paddr),
+ BUFFER_ADDR_INFO1_ADDR) |
+ u32_encode_bits(tid, DP_REO_QREF_NUM);
+}
+
+static void ath12k_peer_rx_tid_qref_reset(struct ath12k_base *ab, u16 peer_id, u16 tid)
+{
+ struct ath12k_reo_queue_ref *qref;
+ struct ath12k_dp *dp = &ab->dp;
+
+ if (!ab->hw_params->reoq_lut_support)
+ return;
+
+ /* TODO: based on ML peer or not, select the LUT. below assumes non
+ * ML peer
+ */
+ qref = (struct ath12k_reo_queue_ref *)dp->reoq_lut.vaddr +
+ (peer_id * (IEEE80211_NUM_TIDS + 1) + tid);
+
+ qref->info0 = u32_encode_bits(0, BUFFER_ADDR_INFO0_ADDR);
+ qref->info1 = u32_encode_bits(0, BUFFER_ADDR_INFO1_ADDR) |
+ u32_encode_bits(tid, DP_REO_QREF_NUM);
+}
+
+void ath12k_dp_rx_peer_tid_delete(struct ath12k *ar,
+ struct ath12k_peer *peer, u8 tid)
+{
+ struct ath12k_hal_reo_cmd cmd = {0};
+ struct ath12k_dp_rx_tid *rx_tid = &peer->rx_tid[tid];
+ int ret;
+
+ if (!rx_tid->active)
+ return;
+
+ cmd.flag = HAL_REO_CMD_FLG_NEED_STATUS;
+ cmd.addr_lo = lower_32_bits(rx_tid->paddr);
+ cmd.addr_hi = upper_32_bits(rx_tid->paddr);
+ cmd.upd0 |= HAL_REO_CMD_UPD0_VLD;
+ ret = ath12k_dp_reo_cmd_send(ar->ab, rx_tid,
+ HAL_REO_CMD_UPDATE_RX_QUEUE, &cmd,
+ ath12k_dp_rx_tid_del_func);
+ if (ret) {
+ ath12k_err(ar->ab, "failed to send HAL_REO_CMD_UPDATE_RX_QUEUE cmd, tid %d (%d)\n",
+ tid, ret);
+ dma_unmap_single(ar->ab->dev, rx_tid->paddr, rx_tid->size,
+ DMA_BIDIRECTIONAL);
+ kfree(rx_tid->vaddr);
+ }
+
+ ath12k_peer_rx_tid_qref_reset(ar->ab, peer->peer_id, tid);
+
+ rx_tid->active = false;
+}
+
+/* TODO: it's strange (and ugly) that struct hal_reo_dest_ring is converted
+ * to struct hal_wbm_release_ring, I couldn't figure out the logic behind
+ * that.
+ */
+static int ath12k_dp_rx_link_desc_return(struct ath12k_base *ab,
+ struct hal_reo_dest_ring *ring,
+ enum hal_wbm_rel_bm_act action)
+{
+ struct hal_wbm_release_ring *link_desc = (struct hal_wbm_release_ring *)ring;
+ struct hal_wbm_release_ring *desc;
+ struct ath12k_dp *dp = &ab->dp;
+ struct hal_srng *srng;
+ int ret = 0;
+
+ srng = &ab->hal.srng_list[dp->wbm_desc_rel_ring.ring_id];
+
+ spin_lock_bh(&srng->lock);
+
+ ath12k_hal_srng_access_begin(ab, srng);
+
+ desc = ath12k_hal_srng_src_get_next_entry(ab, srng);
+ if (!desc) {
+ ret = -ENOBUFS;
+ goto exit;
+ }
+
+ ath12k_hal_rx_msdu_link_desc_set(ab, desc, link_desc, action);
+
+exit:
+ ath12k_hal_srng_access_end(ab, srng);
+
+ spin_unlock_bh(&srng->lock);
+
+ return ret;
+}
+
+static void ath12k_dp_rx_frags_cleanup(struct ath12k_dp_rx_tid *rx_tid,
+ bool rel_link_desc)
+{
+ struct ath12k_base *ab = rx_tid->ab;
+
+ lockdep_assert_held(&ab->base_lock);
+
+ if (rx_tid->dst_ring_desc) {
+ if (rel_link_desc)
+ ath12k_dp_rx_link_desc_return(ab, rx_tid->dst_ring_desc,
+ HAL_WBM_REL_BM_ACT_PUT_IN_IDLE);
+ kfree(rx_tid->dst_ring_desc);
+ rx_tid->dst_ring_desc = NULL;
+ }
+
+ rx_tid->cur_sn = 0;
+ rx_tid->last_frag_no = 0;
+ rx_tid->rx_frag_bitmap = 0;
+ __skb_queue_purge(&rx_tid->rx_frags);
+}
+
+void ath12k_dp_rx_peer_tid_cleanup(struct ath12k *ar, struct ath12k_peer *peer)
+{
+ struct ath12k_dp_rx_tid *rx_tid;
+ int i;
+
+ lockdep_assert_held(&ar->ab->base_lock);
+
+ for (i = 0; i <= IEEE80211_NUM_TIDS; i++) {
+ rx_tid = &peer->rx_tid[i];
+
+ ath12k_dp_rx_peer_tid_delete(ar, peer, i);
+ ath12k_dp_rx_frags_cleanup(rx_tid, true);
+
+ spin_unlock_bh(&ar->ab->base_lock);
+ del_timer_sync(&rx_tid->frag_timer);
+ spin_lock_bh(&ar->ab->base_lock);
+ }
+}
+
+static int ath12k_peer_rx_tid_reo_update(struct ath12k *ar,
+ struct ath12k_peer *peer,
+ struct ath12k_dp_rx_tid *rx_tid,
+ u32 ba_win_sz, u16 ssn,
+ bool update_ssn)
+{
+ struct ath12k_hal_reo_cmd cmd = {0};
+ int ret;
+
+ cmd.addr_lo = lower_32_bits(rx_tid->paddr);
+ cmd.addr_hi = upper_32_bits(rx_tid->paddr);
+ cmd.flag = HAL_REO_CMD_FLG_NEED_STATUS;
+ cmd.upd0 = HAL_REO_CMD_UPD0_BA_WINDOW_SIZE;
+ cmd.ba_window_size = ba_win_sz;
+
+ if (update_ssn) {
+ cmd.upd0 |= HAL_REO_CMD_UPD0_SSN;
+ cmd.upd2 = u32_encode_bits(ssn, HAL_REO_CMD_UPD2_SSN);
+ }
+
+ ret = ath12k_dp_reo_cmd_send(ar->ab, rx_tid,
+ HAL_REO_CMD_UPDATE_RX_QUEUE, &cmd,
+ NULL);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to update rx tid queue, tid %d (%d)\n",
+ rx_tid->tid, ret);
+ return ret;
+ }
+
+ rx_tid->ba_win_sz = ba_win_sz;
+
+ return 0;
+}
+
+int ath12k_dp_rx_peer_tid_setup(struct ath12k *ar, const u8 *peer_mac, int vdev_id,
+ u8 tid, u32 ba_win_sz, u16 ssn,
+ enum hal_pn_type pn_type)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct ath12k_dp *dp = &ab->dp;
+ struct hal_rx_reo_queue *addr_aligned;
+ struct ath12k_peer *peer;
+ struct ath12k_dp_rx_tid *rx_tid;
+ u32 hw_desc_sz;
+ void *vaddr;
+ dma_addr_t paddr;
+ int ret;
+
+ spin_lock_bh(&ab->base_lock);
+
+ peer = ath12k_peer_find(ab, vdev_id, peer_mac);
+ if (!peer) {
+ spin_unlock_bh(&ab->base_lock);
+ ath12k_warn(ab, "failed to find the peer to set up rx tid\n");
+ return -ENOENT;
+ }
+
+ if (ab->hw_params->reoq_lut_support && !dp->reoq_lut.vaddr) {
+ spin_unlock_bh(&ab->base_lock);
+ ath12k_warn(ab, "reo qref table is not setup\n");
+ return -EINVAL;
+ }
+
+ if (peer->peer_id > DP_MAX_PEER_ID || tid > IEEE80211_NUM_TIDS) {
+ ath12k_warn(ab, "peer id of peer %d or tid %d doesn't allow reoq setup\n",
+ peer->peer_id, tid);
+ spin_unlock_bh(&ab->base_lock);
+ return -EINVAL;
+ }
+
+ rx_tid = &peer->rx_tid[tid];
+ /* Update the tid queue if it is already setup */
+ if (rx_tid->active) {
+ paddr = rx_tid->paddr;
+ ret = ath12k_peer_rx_tid_reo_update(ar, peer, rx_tid,
+ ba_win_sz, ssn, true);
+ spin_unlock_bh(&ab->base_lock);
+ if (ret) {
+ ath12k_warn(ab, "failed to update reo for rx tid %d\n", tid);
+ return ret;
+ }
+
+ return ret;
+ }
+
+ rx_tid->tid = tid;
+
+ rx_tid->ba_win_sz = ba_win_sz;
+
+ /* TODO: Optimize the memory allocation for qos tid based on
+ * the actual BA window size in REO tid update path.
+ */
+ if (tid == HAL_DESC_REO_NON_QOS_TID)
+ hw_desc_sz = ath12k_hal_reo_qdesc_size(ba_win_sz, tid);
+ else
+ hw_desc_sz = ath12k_hal_reo_qdesc_size(DP_BA_WIN_SZ_MAX, tid);
+
+ vaddr = kzalloc(hw_desc_sz + HAL_LINK_DESC_ALIGN - 1, GFP_ATOMIC);
+ if (!vaddr) {
+ spin_unlock_bh(&ab->base_lock);
+ return -ENOMEM;
+ }
+
+ addr_aligned = PTR_ALIGN(vaddr, HAL_LINK_DESC_ALIGN);
+
+ ath12k_hal_reo_qdesc_setup(addr_aligned, tid, ba_win_sz,
+ ssn, pn_type);
+
+ paddr = dma_map_single(ab->dev, addr_aligned, hw_desc_sz,
+ DMA_BIDIRECTIONAL);
+
+ ret = dma_mapping_error(ab->dev, paddr);
+ if (ret) {
+ spin_unlock_bh(&ab->base_lock);
+ goto err_mem_free;
+ }
+
+ rx_tid->vaddr = vaddr;
+ rx_tid->paddr = paddr;
+ rx_tid->size = hw_desc_sz;
+ rx_tid->active = true;
+
+ if (ab->hw_params->reoq_lut_support) {
+ /* Update the REO queue LUT at the corresponding peer id
+ * and tid with qaddr.
+ */
+ ath12k_peer_rx_tid_qref_setup(ab, peer->peer_id, tid, paddr);
+ spin_unlock_bh(&ab->base_lock);
+ } else {
+ spin_unlock_bh(&ab->base_lock);
+ ret = ath12k_wmi_peer_rx_reorder_queue_setup(ar, vdev_id, peer_mac,
+ paddr, tid, 1, ba_win_sz);
+ }
+
+ return ret;
+
+err_mem_free:
+ kfree(vaddr);
+
+ return ret;
+}
+
+int ath12k_dp_rx_ampdu_start(struct ath12k *ar,
+ struct ieee80211_ampdu_params *params)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct ath12k_sta *arsta = (void *)params->sta->drv_priv;
+ int vdev_id = arsta->arvif->vdev_id;
+ int ret;
+
+ ret = ath12k_dp_rx_peer_tid_setup(ar, params->sta->addr, vdev_id,
+ params->tid, params->buf_size,
+ params->ssn, arsta->pn_type);
+ if (ret)
+ ath12k_warn(ab, "failed to setup rx tid %d\n", ret);
+
+ return ret;
+}
+
+int ath12k_dp_rx_ampdu_stop(struct ath12k *ar,
+ struct ieee80211_ampdu_params *params)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct ath12k_peer *peer;
+ struct ath12k_sta *arsta = (void *)params->sta->drv_priv;
+ int vdev_id = arsta->arvif->vdev_id;
+ bool active;
+ int ret;
+
+ spin_lock_bh(&ab->base_lock);
+
+ peer = ath12k_peer_find(ab, vdev_id, params->sta->addr);
+ if (!peer) {
+ ath12k_warn(ab, "failed to find the peer to stop rx aggregation\n");
+ spin_unlock_bh(&ab->base_lock);
+ return -ENOENT;
+ }
+
+ active = peer->rx_tid[params->tid].active;
+
+ if (!active) {
+ spin_unlock_bh(&ab->base_lock);
+ return 0;
+ }
+
+ ret = ath12k_peer_rx_tid_reo_update(ar, peer, peer->rx_tid, 1, 0, false);
+ spin_unlock_bh(&ab->base_lock);
+ if (ret) {
+ ath12k_warn(ab, "failed to update reo for rx tid %d: %d\n",
+ params->tid, ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+int ath12k_dp_rx_peer_pn_replay_config(struct ath12k_vif *arvif,
+ const u8 *peer_addr,
+ enum set_key_cmd key_cmd,
+ struct ieee80211_key_conf *key)
+{
+ struct ath12k *ar = arvif->ar;
+ struct ath12k_base *ab = ar->ab;
+ struct ath12k_hal_reo_cmd cmd = {0};
+ struct ath12k_peer *peer;
+ struct ath12k_dp_rx_tid *rx_tid;
+ u8 tid;
+ int ret = 0;
+
+ /* NOTE: Enable PN/TSC replay check offload only for unicast frames.
+ * We use mac80211 PN/TSC replay check functionality for bcast/mcast
+ * for now.
+ */
+ if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
+ return 0;
+
+ cmd.flag |= HAL_REO_CMD_FLG_NEED_STATUS;
+ cmd.upd0 |= HAL_REO_CMD_UPD0_PN |
+ HAL_REO_CMD_UPD0_PN_SIZE |
+ HAL_REO_CMD_UPD0_PN_VALID |
+ HAL_REO_CMD_UPD0_PN_CHECK |
+ HAL_REO_CMD_UPD0_SVLD;
+
+ switch (key->cipher) {
+ case WLAN_CIPHER_SUITE_TKIP:
+ case WLAN_CIPHER_SUITE_CCMP:
+ case WLAN_CIPHER_SUITE_CCMP_256:
+ case WLAN_CIPHER_SUITE_GCMP:
+ case WLAN_CIPHER_SUITE_GCMP_256:
+ if (key_cmd == SET_KEY) {
+ cmd.upd1 |= HAL_REO_CMD_UPD1_PN_CHECK;
+ cmd.pn_size = 48;
+ }
+ break;
+ default:
+ break;
+ }
+
+ spin_lock_bh(&ab->base_lock);
+
+ peer = ath12k_peer_find(ab, arvif->vdev_id, peer_addr);
+ if (!peer) {
+ ath12k_warn(ab, "failed to find the peer to configure pn replay detection\n");
+ spin_unlock_bh(&ab->base_lock);
+ return -ENOENT;
+ }
+
+ for (tid = 0; tid <= IEEE80211_NUM_TIDS; tid++) {
+ rx_tid = &peer->rx_tid[tid];
+ if (!rx_tid->active)
+ continue;
+ cmd.addr_lo = lower_32_bits(rx_tid->paddr);
+ cmd.addr_hi = upper_32_bits(rx_tid->paddr);
+ ret = ath12k_dp_reo_cmd_send(ab, rx_tid,
+ HAL_REO_CMD_UPDATE_RX_QUEUE,
+ &cmd, NULL);
+ if (ret) {
+ ath12k_warn(ab, "failed to configure rx tid %d queue for pn replay detection %d\n",
+ tid, ret);
+ break;
+ }
+ }
+
+ spin_unlock_bh(&ab->base_lock);
+
+ return ret;
+}
+
+static int ath12k_get_ppdu_user_index(struct htt_ppdu_stats *ppdu_stats,
+ u16 peer_id)
+{
+ int i;
+
+ for (i = 0; i < HTT_PPDU_STATS_MAX_USERS - 1; i++) {
+ if (ppdu_stats->user_stats[i].is_valid_peer_id) {
+ if (peer_id == ppdu_stats->user_stats[i].peer_id)
+ return i;
+ } else {
+ return i;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int ath12k_htt_tlv_ppdu_stats_parse(struct ath12k_base *ab,
+ u16 tag, u16 len, const void *ptr,
+ void *data)
+{
+ struct htt_ppdu_stats_info *ppdu_info;
+ struct htt_ppdu_user_stats *user_stats;
+ int cur_user;
+ u16 peer_id;
+
+ ppdu_info = (struct htt_ppdu_stats_info *)data;
+
+ switch (tag) {
+ case HTT_PPDU_STATS_TAG_COMMON:
+ if (len < sizeof(struct htt_ppdu_stats_common)) {
+ ath12k_warn(ab, "Invalid len %d for the tag 0x%x\n",
+ len, tag);
+ return -EINVAL;
+ }
+ memcpy(&ppdu_info->ppdu_stats.common, ptr,
+ sizeof(struct htt_ppdu_stats_common));
+ break;
+ case HTT_PPDU_STATS_TAG_USR_RATE:
+ if (len < sizeof(struct htt_ppdu_stats_user_rate)) {
+ ath12k_warn(ab, "Invalid len %d for the tag 0x%x\n",
+ len, tag);
+ return -EINVAL;
+ }
+
+ peer_id = ((struct htt_ppdu_stats_user_rate *)ptr)->sw_peer_id;
+ cur_user = ath12k_get_ppdu_user_index(&ppdu_info->ppdu_stats,
+ peer_id);
+ if (cur_user < 0)
+ return -EINVAL;
+ user_stats = &ppdu_info->ppdu_stats.user_stats[cur_user];
+ user_stats->peer_id = peer_id;
+ user_stats->is_valid_peer_id = true;
+ memcpy(&user_stats->rate, ptr,
+ sizeof(struct htt_ppdu_stats_user_rate));
+ user_stats->tlv_flags |= BIT(tag);
+ break;
+ case HTT_PPDU_STATS_TAG_USR_COMPLTN_COMMON:
+ if (len < sizeof(struct htt_ppdu_stats_usr_cmpltn_cmn)) {
+ ath12k_warn(ab, "Invalid len %d for the tag 0x%x\n",
+ len, tag);
+ return -EINVAL;
+ }
+
+ peer_id = ((struct htt_ppdu_stats_usr_cmpltn_cmn *)ptr)->sw_peer_id;
+ cur_user = ath12k_get_ppdu_user_index(&ppdu_info->ppdu_stats,
+ peer_id);
+ if (cur_user < 0)
+ return -EINVAL;
+ user_stats = &ppdu_info->ppdu_stats.user_stats[cur_user];
+ user_stats->peer_id = peer_id;
+ user_stats->is_valid_peer_id = true;
+ memcpy(&user_stats->cmpltn_cmn, ptr,
+ sizeof(struct htt_ppdu_stats_usr_cmpltn_cmn));
+ user_stats->tlv_flags |= BIT(tag);
+ break;
+ case HTT_PPDU_STATS_TAG_USR_COMPLTN_ACK_BA_STATUS:
+ if (len <
+ sizeof(struct htt_ppdu_stats_usr_cmpltn_ack_ba_status)) {
+ ath12k_warn(ab, "Invalid len %d for the tag 0x%x\n",
+ len, tag);
+ return -EINVAL;
+ }
+
+ peer_id =
+ ((struct htt_ppdu_stats_usr_cmpltn_ack_ba_status *)ptr)->sw_peer_id;
+ cur_user = ath12k_get_ppdu_user_index(&ppdu_info->ppdu_stats,
+ peer_id);
+ if (cur_user < 0)
+ return -EINVAL;
+ user_stats = &ppdu_info->ppdu_stats.user_stats[cur_user];
+ user_stats->peer_id = peer_id;
+ user_stats->is_valid_peer_id = true;
+ memcpy(&user_stats->ack_ba, ptr,
+ sizeof(struct htt_ppdu_stats_usr_cmpltn_ack_ba_status));
+ user_stats->tlv_flags |= BIT(tag);
+ break;
+ }
+ return 0;
+}
+
+int ath12k_dp_htt_tlv_iter(struct ath12k_base *ab, const void *ptr, size_t len,
+ int (*iter)(struct ath12k_base *ar, u16 tag, u16 len,
+ const void *ptr, void *data),
+ void *data)
+{
+ const struct htt_tlv *tlv;
+ const void *begin = ptr;
+ u16 tlv_tag, tlv_len;
+ int ret = -EINVAL;
+
+ while (len > 0) {
+ if (len < sizeof(*tlv)) {
+ ath12k_err(ab, "htt tlv parse failure@byte %zd (%zu bytes left, %zu expected)\n",
+ ptr - begin, len, sizeof(*tlv));
+ return -EINVAL;
+ }
+ tlv = (struct htt_tlv *)ptr;
+ tlv_tag = u32_get_bits(tlv->header, HTT_TLV_TAG);
+ tlv_len = u32_get_bits(tlv->header, HTT_TLV_LEN);
+ ptr += sizeof(*tlv);
+ len -= sizeof(*tlv);
+
+ if (tlv_len > len) {
+ ath12k_err(ab, "htt tlv parse failure of tag %u at byte %zd (%zu bytes left, %u expected)\n",
+ tlv_tag, ptr - begin, len, tlv_len);
+ return -EINVAL;
+ }
+ ret = iter(ab, tlv_tag, tlv_len, ptr, data);
+ if (ret == -ENOMEM)
+ return ret;
+
+ ptr += tlv_len;
+ len -= tlv_len;
+ }
+ return 0;
+}
+
+static void
+ath12k_update_per_peer_tx_stats(struct ath12k *ar,
+ struct htt_ppdu_stats *ppdu_stats, u8 user)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct ath12k_peer *peer;
+ struct ieee80211_sta *sta;
+ struct ath12k_sta *arsta;
+ struct htt_ppdu_stats_user_rate *user_rate;
+ struct ath12k_per_peer_tx_stats *peer_stats = &ar->peer_tx_stats;
+ struct htt_ppdu_user_stats *usr_stats = &ppdu_stats->user_stats[user];
+ struct htt_ppdu_stats_common *common = &ppdu_stats->common;
+ int ret;
+ u8 flags, mcs, nss, bw, sgi, dcm, rate_idx = 0;
+ u32 v, succ_bytes = 0;
+ u16 rate = 0, succ_pkts = 0;
+ u32 tx_duration = 0;
+ u8 tid = HTT_PPDU_STATS_NON_QOS_TID;
+ bool is_ampdu = false;
+
+ if (!usr_stats)
+ return;
+
+ if (!(usr_stats->tlv_flags & BIT(HTT_PPDU_STATS_TAG_USR_RATE)))
+ return;
+
+ if (usr_stats->tlv_flags & BIT(HTT_PPDU_STATS_TAG_USR_COMPLTN_COMMON))
+ is_ampdu =
+ HTT_USR_CMPLTN_IS_AMPDU(usr_stats->cmpltn_cmn.flags);
+
+ if (usr_stats->tlv_flags &
+ BIT(HTT_PPDU_STATS_TAG_USR_COMPLTN_ACK_BA_STATUS)) {
+ succ_bytes = usr_stats->ack_ba.success_bytes;
+ succ_pkts = u32_get_bits(usr_stats->ack_ba.info,
+ HTT_PPDU_STATS_ACK_BA_INFO_NUM_MSDU_M);
+ tid = u32_get_bits(usr_stats->ack_ba.info,
+ HTT_PPDU_STATS_ACK_BA_INFO_TID_NUM);
+ }
+
+ if (common->fes_duration_us)
+ tx_duration = common->fes_duration_us;
+
+ user_rate = &usr_stats->rate;
+ flags = HTT_USR_RATE_PREAMBLE(user_rate->rate_flags);
+ bw = HTT_USR_RATE_BW(user_rate->rate_flags) - 2;
+ nss = HTT_USR_RATE_NSS(user_rate->rate_flags) + 1;
+ mcs = HTT_USR_RATE_MCS(user_rate->rate_flags);
+ sgi = HTT_USR_RATE_GI(user_rate->rate_flags);
+ dcm = HTT_USR_RATE_DCM(user_rate->rate_flags);
+
+ /* Note: If host configured fixed rates and in some other special
+ * cases, the broadcast/management frames are sent in different rates.
+ * Firmware rate's control to be skipped for this?
+ */
+
+ if (flags == WMI_RATE_PREAMBLE_HE && mcs > 11) {
+ ath12k_warn(ab, "Invalid HE mcs %d peer stats", mcs);
+ return;
+ }
+
+ if (flags == WMI_RATE_PREAMBLE_HE && mcs > ATH12K_HE_MCS_MAX) {
+ ath12k_warn(ab, "Invalid HE mcs %d peer stats", mcs);
+ return;
+ }
+
+ if (flags == WMI_RATE_PREAMBLE_VHT && mcs > ATH12K_VHT_MCS_MAX) {
+ ath12k_warn(ab, "Invalid VHT mcs %d peer stats", mcs);
+ return;
+ }
+
+ if (flags == WMI_RATE_PREAMBLE_HT && (mcs > ATH12K_HT_MCS_MAX || nss < 1)) {
+ ath12k_warn(ab, "Invalid HT mcs %d nss %d peer stats",
+ mcs, nss);
+ return;
+ }
+
+ if (flags == WMI_RATE_PREAMBLE_CCK || flags == WMI_RATE_PREAMBLE_OFDM) {
+ ret = ath12k_mac_hw_ratecode_to_legacy_rate(mcs,
+ flags,
+ &rate_idx,
+ &rate);
+ if (ret < 0)
+ return;
+ }
+
+ rcu_read_lock();
+ spin_lock_bh(&ab->base_lock);
+ peer = ath12k_peer_find_by_id(ab, usr_stats->peer_id);
+
+ if (!peer || !peer->sta) {
+ spin_unlock_bh(&ab->base_lock);
+ rcu_read_unlock();
+ return;
+ }
+
+ sta = peer->sta;
+ arsta = (struct ath12k_sta *)sta->drv_priv;
+
+ memset(&arsta->txrate, 0, sizeof(arsta->txrate));
+
+ switch (flags) {
+ case WMI_RATE_PREAMBLE_OFDM:
+ arsta->txrate.legacy = rate;
+ break;
+ case WMI_RATE_PREAMBLE_CCK:
+ arsta->txrate.legacy = rate;
+ break;
+ case WMI_RATE_PREAMBLE_HT:
+ arsta->txrate.mcs = mcs + 8 * (nss - 1);
+ arsta->txrate.flags = RATE_INFO_FLAGS_MCS;
+ if (sgi)
+ arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
+ break;
+ case WMI_RATE_PREAMBLE_VHT:
+ arsta->txrate.mcs = mcs;
+ arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS;
+ if (sgi)
+ arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
+ break;
+ case WMI_RATE_PREAMBLE_HE:
+ arsta->txrate.mcs = mcs;
+ arsta->txrate.flags = RATE_INFO_FLAGS_HE_MCS;
+ arsta->txrate.he_dcm = dcm;
+ arsta->txrate.he_gi = ath12k_he_gi_to_nl80211_he_gi(sgi);
+ v = ath12k_he_ru_tones_to_nl80211_he_ru_alloc((user_rate->ru_end -
+ user_rate->ru_start) + 1);
+ arsta->txrate.he_ru_alloc = v;
+ break;
+ }
+
+ arsta->txrate.nss = nss;
+ arsta->txrate.bw = ath12k_mac_bw_to_mac80211_bw(bw);
+ arsta->tx_duration += tx_duration;
+ memcpy(&arsta->last_txrate, &arsta->txrate, sizeof(struct rate_info));
+
+ /* PPDU stats reported for mgmt packet doesn't have valid tx bytes.
+ * So skip peer stats update for mgmt packets.
+ */
+ if (tid < HTT_PPDU_STATS_NON_QOS_TID) {
+ memset(peer_stats, 0, sizeof(*peer_stats));
+ peer_stats->succ_pkts = succ_pkts;
+ peer_stats->succ_bytes = succ_bytes;
+ peer_stats->is_ampdu = is_ampdu;
+ peer_stats->duration = tx_duration;
+ peer_stats->ba_fails =
+ HTT_USR_CMPLTN_LONG_RETRY(usr_stats->cmpltn_cmn.flags) +
+ HTT_USR_CMPLTN_SHORT_RETRY(usr_stats->cmpltn_cmn.flags);
+ }
+
+ spin_unlock_bh(&ab->base_lock);
+ rcu_read_unlock();
+}
+
+static void ath12k_htt_update_ppdu_stats(struct ath12k *ar,
+ struct htt_ppdu_stats *ppdu_stats)
+{
+ u8 user;
+
+ for (user = 0; user < HTT_PPDU_STATS_MAX_USERS - 1; user++)
+ ath12k_update_per_peer_tx_stats(ar, ppdu_stats, user);
+}
+
+static
+struct htt_ppdu_stats_info *ath12k_dp_htt_get_ppdu_desc(struct ath12k *ar,
+ u32 ppdu_id)
+{
+ struct htt_ppdu_stats_info *ppdu_info;
+
+ lockdep_assert_held(&ar->data_lock);
+ if (!list_empty(&ar->ppdu_stats_info)) {
+ list_for_each_entry(ppdu_info, &ar->ppdu_stats_info, list) {
+ if (ppdu_info->ppdu_id == ppdu_id)
+ return ppdu_info;
+ }
+
+ if (ar->ppdu_stat_list_depth > HTT_PPDU_DESC_MAX_DEPTH) {
+ ppdu_info = list_first_entry(&ar->ppdu_stats_info,
+ typeof(*ppdu_info), list);
+ list_del(&ppdu_info->list);
+ ar->ppdu_stat_list_depth--;
+ ath12k_htt_update_ppdu_stats(ar, &ppdu_info->ppdu_stats);
+ kfree(ppdu_info);
+ }
+ }
+
+ ppdu_info = kzalloc(sizeof(*ppdu_info), GFP_ATOMIC);
+ if (!ppdu_info)
+ return NULL;
+
+ list_add_tail(&ppdu_info->list, &ar->ppdu_stats_info);
+ ar->ppdu_stat_list_depth++;
+
+ return ppdu_info;
+}
+
+static void ath12k_copy_to_delay_stats(struct ath12k_peer *peer,
+ struct htt_ppdu_user_stats *usr_stats)
+{
+ peer->ppdu_stats_delayba.sw_peer_id = usr_stats->rate.sw_peer_id;
+ peer->ppdu_stats_delayba.info0 = usr_stats->rate.info0;
+ peer->ppdu_stats_delayba.ru_end = usr_stats->rate.ru_end;
+ peer->ppdu_stats_delayba.ru_start = usr_stats->rate.ru_start;
+ peer->ppdu_stats_delayba.info1 = usr_stats->rate.info1;
+ peer->ppdu_stats_delayba.rate_flags = usr_stats->rate.rate_flags;
+ peer->ppdu_stats_delayba.resp_rate_flags = usr_stats->rate.resp_rate_flags;
+
+ peer->delayba_flag = true;
+}
+
+static void ath12k_copy_to_bar(struct ath12k_peer *peer,
+ struct htt_ppdu_user_stats *usr_stats)
+{
+ usr_stats->rate.sw_peer_id = peer->ppdu_stats_delayba.sw_peer_id;
+ usr_stats->rate.info0 = peer->ppdu_stats_delayba.info0;
+ usr_stats->rate.ru_end = peer->ppdu_stats_delayba.ru_end;
+ usr_stats->rate.ru_start = peer->ppdu_stats_delayba.ru_start;
+ usr_stats->rate.info1 = peer->ppdu_stats_delayba.info1;
+ usr_stats->rate.rate_flags = peer->ppdu_stats_delayba.rate_flags;
+ usr_stats->rate.resp_rate_flags = peer->ppdu_stats_delayba.resp_rate_flags;
+
+ peer->delayba_flag = false;
+}
+
+static int ath12k_htt_pull_ppdu_stats(struct ath12k_base *ab,
+ struct sk_buff *skb)
+{
+ struct ath12k_htt_ppdu_stats_msg *msg;
+ struct htt_ppdu_stats_info *ppdu_info;
+ struct ath12k_peer *peer = NULL;
+ struct htt_ppdu_user_stats *usr_stats = NULL;
+ u32 peer_id = 0;
+ struct ath12k *ar;
+ int ret, i;
+ u8 pdev_id;
+ u32 ppdu_id, len;
+
+ msg = (struct ath12k_htt_ppdu_stats_msg *)skb->data;
+ len = u32_get_bits(msg->info, HTT_T2H_PPDU_STATS_INFO_PAYLOAD_SIZE);
+ pdev_id = u32_get_bits(msg->info, HTT_T2H_PPDU_STATS_INFO_PDEV_ID);
+ ppdu_id = msg->ppdu_id;
+
+ rcu_read_lock();
+ ar = ath12k_mac_get_ar_by_pdev_id(ab, pdev_id);
+ if (!ar) {
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ spin_lock_bh(&ar->data_lock);
+ ppdu_info = ath12k_dp_htt_get_ppdu_desc(ar, ppdu_id);
+ if (!ppdu_info) {
+ spin_unlock_bh(&ar->data_lock);
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ ppdu_info->ppdu_id = ppdu_id;
+ ret = ath12k_dp_htt_tlv_iter(ab, msg->data, len,
+ ath12k_htt_tlv_ppdu_stats_parse,
+ (void *)ppdu_info);
+ if (ret) {
+ spin_unlock_bh(&ar->data_lock);
+ ath12k_warn(ab, "Failed to parse tlv %d\n", ret);
+ goto exit;
+ }
+
+ /* back up data rate tlv for all peers */
+ if (ppdu_info->frame_type == HTT_STATS_PPDU_FTYPE_DATA &&
+ (ppdu_info->tlv_bitmap & (1 << HTT_PPDU_STATS_TAG_USR_COMMON)) &&
+ ppdu_info->delay_ba) {
+ for (i = 0; i < ppdu_info->ppdu_stats.common.num_users; i++) {
+ peer_id = ppdu_info->ppdu_stats.user_stats[i].peer_id;
+ spin_lock_bh(&ab->base_lock);
+ peer = ath12k_peer_find_by_id(ab, peer_id);
+ if (!peer) {
+ spin_unlock_bh(&ab->base_lock);
+ continue;
+ }
+
+ usr_stats = &ppdu_info->ppdu_stats.user_stats[i];
+ if (usr_stats->delay_ba)
+ ath12k_copy_to_delay_stats(peer, usr_stats);
+ spin_unlock_bh(&ab->base_lock);
+ }
+ }
+
+ /* restore all peers' data rate tlv to mu-bar tlv */
+ if (ppdu_info->frame_type == HTT_STATS_PPDU_FTYPE_BAR &&
+ (ppdu_info->tlv_bitmap & (1 << HTT_PPDU_STATS_TAG_USR_COMMON))) {
+ for (i = 0; i < ppdu_info->bar_num_users; i++) {
+ peer_id = ppdu_info->ppdu_stats.user_stats[i].peer_id;
+ spin_lock_bh(&ab->base_lock);
+ peer = ath12k_peer_find_by_id(ab, peer_id);
+ if (!peer) {
+ spin_unlock_bh(&ab->base_lock);
+ continue;
+ }
+
+ usr_stats = &ppdu_info->ppdu_stats.user_stats[i];
+ if (peer->delayba_flag)
+ ath12k_copy_to_bar(peer, usr_stats);
+ spin_unlock_bh(&ab->base_lock);
+ }
+ }
+
+ spin_unlock_bh(&ar->data_lock);
+
+exit:
+ rcu_read_unlock();
+
+ return ret;
+}
+
+static void ath12k_htt_pktlog(struct ath12k_base *ab, struct sk_buff *skb)
+{
+ struct htt_pktlog_msg *data = (struct htt_pktlog_msg *)skb->data;
+ struct ath_pktlog_hdr *hdr = (struct ath_pktlog_hdr *)data;
+ struct ath12k *ar;
+ u8 pdev_id;
+
+ pdev_id = u32_get_bits(data->hdr, HTT_T2H_PPDU_STATS_INFO_PDEV_ID);
+ ar = ath12k_mac_get_ar_by_pdev_id(ab, pdev_id);
+ if (!ar) {
+ ath12k_warn(ab, "invalid pdev id %d on htt pktlog\n", pdev_id);
+ return;
+ }
+ hdr->m_timestamp = ar->pdev->timestamp;
+
+ trace_ath12k_htt_pktlog(ar, data->payload, hdr->size,
+ ar->ab->pktlog_defs_checksum);
+}
+
+static void ath12k_htt_backpressure_event_handler(struct ath12k_base *ab,
+ struct sk_buff *skb)
+{
+ u32 *data = (u32 *)skb->data;
+ u8 pdev_id, ring_type, ring_id, pdev_idx;
+ u16 hp, tp;
+ u32 backpressure_time;
+ struct ath12k_bp_stats *bp_stats;
+
+ pdev_id = u32_get_bits(*data, HTT_BACKPRESSURE_EVENT_PDEV_ID_M);
+ ring_type = u32_get_bits(*data, HTT_BACKPRESSURE_EVENT_RING_TYPE_M);
+ ring_id = u32_get_bits(*data, HTT_BACKPRESSURE_EVENT_RING_ID_M);
+ ++data;
+
+ hp = u32_get_bits(*data, HTT_BACKPRESSURE_EVENT_HP_M);
+ tp = u32_get_bits(*data, HTT_BACKPRESSURE_EVENT_TP_M);
+ ++data;
+
+ backpressure_time = *data;
+
+ ath12k_dbg(ab, ATH12K_DBG_DP_HTT, "htt backpressure event, pdev %d, ring type %d,ring id %d, hp %d tp %d, backpressure time %d\n",
+ pdev_id, ring_type, ring_id, hp, tp, backpressure_time);
+
+ if (ring_type == HTT_BACKPRESSURE_UMAC_RING_TYPE) {
+ if (ring_id >= HTT_SW_UMAC_RING_IDX_MAX)
+ return;
+
+ bp_stats = &ab->soc_stats.bp_stats.umac_ring_bp_stats[ring_id];
+ } else if (ring_type == HTT_BACKPRESSURE_LMAC_RING_TYPE) {
+ pdev_idx = DP_HW2SW_MACID(pdev_id);
+
+ if (ring_id >= HTT_SW_LMAC_RING_IDX_MAX || pdev_idx >= MAX_RADIOS)
+ return;
+
+ bp_stats = &ab->soc_stats.bp_stats.lmac_ring_bp_stats[ring_id][pdev_idx];
+ } else {
+ ath12k_warn(ab, "unknown ring type received in htt bp event %d\n",
+ ring_type);
+ return;
+ }
+
+ spin_lock_bh(&ab->base_lock);
+ bp_stats->hp = hp;
+ bp_stats->tp = tp;
+ bp_stats->count++;
+ bp_stats->jiffies = jiffies;
+ spin_unlock_bh(&ab->base_lock);
+}
+
+static void ath12k_htt_mlo_offset_event_handler(struct ath12k_base *ab,
+ struct sk_buff *skb)
+{
+ struct ath12k_htt_mlo_offset_msg *msg;
+ struct ath12k_pdev *pdev;
+ struct ath12k *ar;
+ u8 pdev_id;
+
+ msg = (struct ath12k_htt_mlo_offset_msg *)skb->data;
+ pdev_id = u32_get_bits(__le32_to_cpu(msg->info),
+ HTT_T2H_MLO_OFFSET_INFO_PDEV_ID);
+ ar = ath12k_mac_get_ar_by_pdev_id(ab, pdev_id);
+
+ if (!ar) {
+ ath12k_warn(ab, "invalid pdev id %d on htt mlo offset\n", pdev_id);
+ return;
+ }
+
+ spin_lock_bh(&ar->data_lock);
+ pdev = ar->pdev;
+
+ pdev->timestamp.info = __le32_to_cpu(msg->info);
+ pdev->timestamp.sync_timestamp_lo_us = __le32_to_cpu(msg->sync_timestamp_lo_us);
+ pdev->timestamp.sync_timestamp_hi_us = __le32_to_cpu(msg->sync_timestamp_hi_us);
+ pdev->timestamp.mlo_offset_lo = __le32_to_cpu(msg->mlo_offset_lo);
+ pdev->timestamp.mlo_offset_hi = __le32_to_cpu(msg->mlo_offset_hi);
+ pdev->timestamp.mlo_offset_clks = __le32_to_cpu(msg->mlo_offset_clks);
+ pdev->timestamp.mlo_comp_clks = __le32_to_cpu(msg->mlo_comp_clks);
+ pdev->timestamp.mlo_comp_timer = __le32_to_cpu(msg->mlo_comp_timer);
+
+ spin_unlock_bh(&ar->data_lock);
+}
+
+void ath12k_dp_htt_htc_t2h_msg_handler(struct ath12k_base *ab,
+ struct sk_buff *skb)
+{
+ struct ath12k_dp *dp = &ab->dp;
+ struct htt_resp_msg *resp = (struct htt_resp_msg *)skb->data;
+ enum htt_t2h_msg_type type;
+ u16 peer_id;
+ u8 vdev_id;
+ u8 mac_addr[ETH_ALEN];
+ u16 peer_mac_h16;
+ u16 ast_hash = 0;
+ u16 hw_peer_id;
+
+ type = u32_get_bits(resp->version_msg.version, HTT_T2H_MSG_TYPE);
+
+ ath12k_dbg(ab, ATH12K_DBG_DP_HTT, "dp_htt rx msg type :0x%0x\n", type);
+
+ switch (type) {
+ case HTT_T2H_MSG_TYPE_VERSION_CONF:
+ dp->htt_tgt_ver_major = u32_get_bits(resp->version_msg.version,
+ HTT_T2H_VERSION_CONF_MAJOR);
+ dp->htt_tgt_ver_minor = u32_get_bits(resp->version_msg.version,
+ HTT_T2H_VERSION_CONF_MINOR);
+ complete(&dp->htt_tgt_version_received);
+ break;
+ /* TODO: remove unused peer map versions after testing */
+ case HTT_T2H_MSG_TYPE_PEER_MAP:
+ vdev_id = u32_get_bits(resp->peer_map_ev.info,
+ HTT_T2H_PEER_MAP_INFO_VDEV_ID);
+ peer_id = u32_get_bits(resp->peer_map_ev.info,
+ HTT_T2H_PEER_MAP_INFO_PEER_ID);
+ peer_mac_h16 = u32_get_bits(resp->peer_map_ev.info1,
+ HTT_T2H_PEER_MAP_INFO1_MAC_ADDR_H16);
+ ath12k_dp_get_mac_addr(resp->peer_map_ev.mac_addr_l32,
+ peer_mac_h16, mac_addr);
+ ath12k_peer_map_event(ab, vdev_id, peer_id, mac_addr, 0, 0);
+ break;
+ case HTT_T2H_MSG_TYPE_PEER_MAP2:
+ vdev_id = u32_get_bits(resp->peer_map_ev.info,
+ HTT_T2H_PEER_MAP_INFO_VDEV_ID);
+ peer_id = u32_get_bits(resp->peer_map_ev.info,
+ HTT_T2H_PEER_MAP_INFO_PEER_ID);
+ peer_mac_h16 = u32_get_bits(resp->peer_map_ev.info1,
+ HTT_T2H_PEER_MAP_INFO1_MAC_ADDR_H16);
+ ath12k_dp_get_mac_addr(resp->peer_map_ev.mac_addr_l32,
+ peer_mac_h16, mac_addr);
+ ast_hash = u32_get_bits(resp->peer_map_ev.info2,
+ HTT_T2H_PEER_MAP_INFO2_AST_HASH_VAL);
+ hw_peer_id = u32_get_bits(resp->peer_map_ev.info1,
+ HTT_T2H_PEER_MAP_INFO1_HW_PEER_ID);
+ ath12k_peer_map_event(ab, vdev_id, peer_id, mac_addr, ast_hash,
+ hw_peer_id);
+ break;
+ case HTT_T2H_MSG_TYPE_PEER_MAP3:
+ vdev_id = u32_get_bits(resp->peer_map_ev.info,
+ HTT_T2H_PEER_MAP_INFO_VDEV_ID);
+ peer_id = u32_get_bits(resp->peer_map_ev.info,
+ HTT_T2H_PEER_MAP_INFO_PEER_ID);
+ peer_mac_h16 = u32_get_bits(resp->peer_map_ev.info1,
+ HTT_T2H_PEER_MAP_INFO1_MAC_ADDR_H16);
+ ath12k_dp_get_mac_addr(resp->peer_map_ev.mac_addr_l32,
+ peer_mac_h16, mac_addr);
+ ath12k_peer_map_event(ab, vdev_id, peer_id, mac_addr, ast_hash,
+ peer_id);
+ break;
+ case HTT_T2H_MSG_TYPE_PEER_UNMAP:
+ case HTT_T2H_MSG_TYPE_PEER_UNMAP2:
+ peer_id = u32_get_bits(resp->peer_unmap_ev.info,
+ HTT_T2H_PEER_UNMAP_INFO_PEER_ID);
+ ath12k_peer_unmap_event(ab, peer_id);
+ break;
+ case HTT_T2H_MSG_TYPE_PPDU_STATS_IND:
+ ath12k_htt_pull_ppdu_stats(ab, skb);
+ break;
+ case HTT_T2H_MSG_TYPE_EXT_STATS_CONF:
+ break;
+ case HTT_T2H_MSG_TYPE_PKTLOG:
+ ath12k_htt_pktlog(ab, skb);
+ break;
+ case HTT_T2H_MSG_TYPE_BKPRESSURE_EVENT_IND:
+ ath12k_htt_backpressure_event_handler(ab, skb);
+ break;
+ case HTT_T2H_MSG_TYPE_MLO_TIMESTAMP_OFFSET_IND:
+ ath12k_htt_mlo_offset_event_handler(ab, skb);
+ break;
+ default:
+ ath12k_dbg(ab, ATH12K_DBG_DP_HTT, "dp_htt event %d not handled\n",
+ type);
+ break;
+ }
+
+ dev_kfree_skb_any(skb);
+}
+
+static int ath12k_dp_rx_msdu_coalesce(struct ath12k *ar,
+ struct sk_buff_head *msdu_list,
+ struct sk_buff *first, struct sk_buff *last,
+ u8 l3pad_bytes, int msdu_len)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct sk_buff *skb;
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(first);
+ int buf_first_hdr_len, buf_first_len;
+ struct hal_rx_desc *ldesc;
+ int space_extra, rem_len, buf_len;
+ u32 hal_rx_desc_sz = ar->ab->hw_params->hal_desc_sz;
+
+ /* As the msdu is spread across multiple rx buffers,
+ * find the offset to the start of msdu for computing
+ * the length of the msdu in the first buffer.
+ */
+ buf_first_hdr_len = hal_rx_desc_sz + l3pad_bytes;
+ buf_first_len = DP_RX_BUFFER_SIZE - buf_first_hdr_len;
+
+ if (WARN_ON_ONCE(msdu_len <= buf_first_len)) {
+ skb_put(first, buf_first_hdr_len + msdu_len);
+ skb_pull(first, buf_first_hdr_len);
+ return 0;
+ }
+
+ ldesc = (struct hal_rx_desc *)last->data;
+ rxcb->is_first_msdu = ath12k_dp_rx_h_first_msdu(ab, ldesc);
+ rxcb->is_last_msdu = ath12k_dp_rx_h_last_msdu(ab, ldesc);
+
+ /* MSDU spans over multiple buffers because the length of the MSDU
+ * exceeds DP_RX_BUFFER_SIZE - HAL_RX_DESC_SIZE. So assume the data
+ * in the first buf is of length DP_RX_BUFFER_SIZE - HAL_RX_DESC_SIZE.
+ */
+ skb_put(first, DP_RX_BUFFER_SIZE);
+ skb_pull(first, buf_first_hdr_len);
+
+ /* When an MSDU spread over multiple buffers MSDU_END
+ * tlvs are valid only in the last buffer. Copy those tlvs.
+ */
+ ath12k_dp_rx_desc_end_tlv_copy(ab, rxcb->rx_desc, ldesc);
+
+ space_extra = msdu_len - (buf_first_len + skb_tailroom(first));
+ if (space_extra > 0 &&
+ (pskb_expand_head(first, 0, space_extra, GFP_ATOMIC) < 0)) {
+ /* Free up all buffers of the MSDU */
+ while ((skb = __skb_dequeue(msdu_list)) != NULL) {
+ rxcb = ATH12K_SKB_RXCB(skb);
+ if (!rxcb->is_continuation) {
+ dev_kfree_skb_any(skb);
+ break;
+ }
+ dev_kfree_skb_any(skb);
+ }
+ return -ENOMEM;
+ }
+
+ rem_len = msdu_len - buf_first_len;
+ while ((skb = __skb_dequeue(msdu_list)) != NULL && rem_len > 0) {
+ rxcb = ATH12K_SKB_RXCB(skb);
+ if (rxcb->is_continuation)
+ buf_len = DP_RX_BUFFER_SIZE - hal_rx_desc_sz;
+ else
+ buf_len = rem_len;
+
+ if (buf_len > (DP_RX_BUFFER_SIZE - hal_rx_desc_sz)) {
+ WARN_ON_ONCE(1);
+ dev_kfree_skb_any(skb);
+ return -EINVAL;
+ }
+
+ skb_put(skb, buf_len + hal_rx_desc_sz);
+ skb_pull(skb, hal_rx_desc_sz);
+ skb_copy_from_linear_data(skb, skb_put(first, buf_len),
+ buf_len);
+ dev_kfree_skb_any(skb);
+
+ rem_len -= buf_len;
+ if (!rxcb->is_continuation)
+ break;
+ }
+
+ return 0;
+}
+
+static struct sk_buff *ath12k_dp_rx_get_msdu_last_buf(struct sk_buff_head *msdu_list,
+ struct sk_buff *first)
+{
+ struct sk_buff *skb;
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(first);
+
+ if (!rxcb->is_continuation)
+ return first;
+
+ skb_queue_walk(msdu_list, skb) {
+ rxcb = ATH12K_SKB_RXCB(skb);
+ if (!rxcb->is_continuation)
+ return skb;
+ }
+
+ return NULL;
+}
+
+static void ath12k_dp_rx_h_csum_offload(struct ath12k *ar, struct sk_buff *msdu)
+{
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
+ struct ath12k_base *ab = ar->ab;
+ bool ip_csum_fail, l4_csum_fail;
+
+ ip_csum_fail = ath12k_dp_rx_h_ip_cksum_fail(ab, rxcb->rx_desc);
+ l4_csum_fail = ath12k_dp_rx_h_l4_cksum_fail(ab, rxcb->rx_desc);
+
+ msdu->ip_summed = (ip_csum_fail || l4_csum_fail) ?
+ CHECKSUM_NONE : CHECKSUM_UNNECESSARY;
+}
+
+static int ath12k_dp_rx_crypto_mic_len(struct ath12k *ar,
+ enum hal_encrypt_type enctype)
+{
+ switch (enctype) {
+ case HAL_ENCRYPT_TYPE_OPEN:
+ case HAL_ENCRYPT_TYPE_TKIP_NO_MIC:
+ case HAL_ENCRYPT_TYPE_TKIP_MIC:
+ return 0;
+ case HAL_ENCRYPT_TYPE_CCMP_128:
+ return IEEE80211_CCMP_MIC_LEN;
+ case HAL_ENCRYPT_TYPE_CCMP_256:
+ return IEEE80211_CCMP_256_MIC_LEN;
+ case HAL_ENCRYPT_TYPE_GCMP_128:
+ case HAL_ENCRYPT_TYPE_AES_GCMP_256:
+ return IEEE80211_GCMP_MIC_LEN;
+ case HAL_ENCRYPT_TYPE_WEP_40:
+ case HAL_ENCRYPT_TYPE_WEP_104:
+ case HAL_ENCRYPT_TYPE_WEP_128:
+ case HAL_ENCRYPT_TYPE_WAPI_GCM_SM4:
+ case HAL_ENCRYPT_TYPE_WAPI:
+ break;
+ }
+
+ ath12k_warn(ar->ab, "unsupported encryption type %d for mic len\n", enctype);
+ return 0;
+}
+
+static int ath12k_dp_rx_crypto_param_len(struct ath12k *ar,
+ enum hal_encrypt_type enctype)
+{
+ switch (enctype) {
+ case HAL_ENCRYPT_TYPE_OPEN:
+ return 0;
+ case HAL_ENCRYPT_TYPE_TKIP_NO_MIC:
+ case HAL_ENCRYPT_TYPE_TKIP_MIC:
+ return IEEE80211_TKIP_IV_LEN;
+ case HAL_ENCRYPT_TYPE_CCMP_128:
+ return IEEE80211_CCMP_HDR_LEN;
+ case HAL_ENCRYPT_TYPE_CCMP_256:
+ return IEEE80211_CCMP_256_HDR_LEN;
+ case HAL_ENCRYPT_TYPE_GCMP_128:
+ case HAL_ENCRYPT_TYPE_AES_GCMP_256:
+ return IEEE80211_GCMP_HDR_LEN;
+ case HAL_ENCRYPT_TYPE_WEP_40:
+ case HAL_ENCRYPT_TYPE_WEP_104:
+ case HAL_ENCRYPT_TYPE_WEP_128:
+ case HAL_ENCRYPT_TYPE_WAPI_GCM_SM4:
+ case HAL_ENCRYPT_TYPE_WAPI:
+ break;
+ }
+
+ ath12k_warn(ar->ab, "unsupported encryption type %d\n", enctype);
+ return 0;
+}
+
+static int ath12k_dp_rx_crypto_icv_len(struct ath12k *ar,
+ enum hal_encrypt_type enctype)
+{
+ switch (enctype) {
+ case HAL_ENCRYPT_TYPE_OPEN:
+ case HAL_ENCRYPT_TYPE_CCMP_128:
+ case HAL_ENCRYPT_TYPE_CCMP_256:
+ case HAL_ENCRYPT_TYPE_GCMP_128:
+ case HAL_ENCRYPT_TYPE_AES_GCMP_256:
+ return 0;
+ case HAL_ENCRYPT_TYPE_TKIP_NO_MIC:
+ case HAL_ENCRYPT_TYPE_TKIP_MIC:
+ return IEEE80211_TKIP_ICV_LEN;
+ case HAL_ENCRYPT_TYPE_WEP_40:
+ case HAL_ENCRYPT_TYPE_WEP_104:
+ case HAL_ENCRYPT_TYPE_WEP_128:
+ case HAL_ENCRYPT_TYPE_WAPI_GCM_SM4:
+ case HAL_ENCRYPT_TYPE_WAPI:
+ break;
+ }
+
+ ath12k_warn(ar->ab, "unsupported encryption type %d\n", enctype);
+ return 0;
+}
+
+static void ath12k_dp_rx_h_undecap_nwifi(struct ath12k *ar,
+ struct sk_buff *msdu,
+ enum hal_encrypt_type enctype,
+ struct ieee80211_rx_status *status)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
+ u8 decap_hdr[DP_MAX_NWIFI_HDR_LEN];
+ struct ieee80211_hdr *hdr;
+ size_t hdr_len;
+ u8 *crypto_hdr;
+ u16 qos_ctl = 0;
+
+ /* pull decapped header */
+ hdr = (struct ieee80211_hdr *)msdu->data;
+ hdr_len = ieee80211_hdrlen(hdr->frame_control);
+ skb_pull(msdu, hdr_len);
+
+ /* Rebuild qos header */
+ hdr->frame_control |= __cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
+
+ /* Reset the order bit as the HT_Control header is stripped */
+ hdr->frame_control &= ~(__cpu_to_le16(IEEE80211_FCTL_ORDER));
+
+ qos_ctl = rxcb->tid;
+
+ if (ath12k_dp_rx_h_mesh_ctl_present(ab, rxcb->rx_desc))
+ qos_ctl |= IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT;
+
+ /* TODO: Add other QoS ctl fields when required */
+
+ /* copy decap header before overwriting for reuse below */
+ memcpy(decap_hdr, hdr, hdr_len);
+
+ /* Rebuild crypto header for mac80211 use */
+ if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
+ crypto_hdr = skb_push(msdu, ath12k_dp_rx_crypto_param_len(ar, enctype));
+ ath12k_dp_rx_desc_get_crypto_header(ar->ab,
+ rxcb->rx_desc, crypto_hdr,
+ enctype);
+ }
+
+ memcpy(skb_push(msdu,
+ IEEE80211_QOS_CTL_LEN), &qos_ctl,
+ IEEE80211_QOS_CTL_LEN);
+ memcpy(skb_push(msdu, hdr_len), decap_hdr, hdr_len);
+}
+
+static void ath12k_dp_rx_h_undecap_raw(struct ath12k *ar, struct sk_buff *msdu,
+ enum hal_encrypt_type enctype,
+ struct ieee80211_rx_status *status,
+ bool decrypted)
+{
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
+ struct ieee80211_hdr *hdr;
+ size_t hdr_len;
+ size_t crypto_len;
+
+ if (!rxcb->is_first_msdu ||
+ !(rxcb->is_first_msdu && rxcb->is_last_msdu)) {
+ WARN_ON_ONCE(1);
+ return;
+ }
+
+ skb_trim(msdu, msdu->len - FCS_LEN);
+
+ if (!decrypted)
+ return;
+
+ hdr = (void *)msdu->data;
+
+ /* Tail */
+ if (status->flag & RX_FLAG_IV_STRIPPED) {
+ skb_trim(msdu, msdu->len -
+ ath12k_dp_rx_crypto_mic_len(ar, enctype));
+
+ skb_trim(msdu, msdu->len -
+ ath12k_dp_rx_crypto_icv_len(ar, enctype));
+ } else {
+ /* MIC */
+ if (status->flag & RX_FLAG_MIC_STRIPPED)
+ skb_trim(msdu, msdu->len -
+ ath12k_dp_rx_crypto_mic_len(ar, enctype));
+
+ /* ICV */
+ if (status->flag & RX_FLAG_ICV_STRIPPED)
+ skb_trim(msdu, msdu->len -
+ ath12k_dp_rx_crypto_icv_len(ar, enctype));
+ }
+
+ /* MMIC */
+ if ((status->flag & RX_FLAG_MMIC_STRIPPED) &&
+ !ieee80211_has_morefrags(hdr->frame_control) &&
+ enctype == HAL_ENCRYPT_TYPE_TKIP_MIC)
+ skb_trim(msdu, msdu->len - IEEE80211_CCMP_MIC_LEN);
+
+ /* Head */
+ if (status->flag & RX_FLAG_IV_STRIPPED) {
+ hdr_len = ieee80211_hdrlen(hdr->frame_control);
+ crypto_len = ath12k_dp_rx_crypto_param_len(ar, enctype);
+
+ memmove(msdu->data + crypto_len, msdu->data, hdr_len);
+ skb_pull(msdu, crypto_len);
+ }
+}
+
+static void ath12k_get_dot11_hdr_from_rx_desc(struct ath12k *ar,
+ struct sk_buff *msdu,
+ struct ath12k_skb_rxcb *rxcb,
+ struct ieee80211_rx_status *status,
+ enum hal_encrypt_type enctype)
+{
+ struct hal_rx_desc *rx_desc = rxcb->rx_desc;
+ struct ath12k_base *ab = ar->ab;
+ size_t hdr_len, crypto_len;
+ struct ieee80211_hdr *hdr;
+ u16 qos_ctl = 0;
+ __le16 fc;
+ u8 *crypto_hdr;
+
+ if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
+ crypto_len = ath12k_dp_rx_crypto_param_len(ar, enctype);
+ crypto_hdr = skb_push(msdu, crypto_len);
+ ath12k_dp_rx_desc_get_crypto_header(ab, rx_desc, crypto_hdr, enctype);
+ }
+
+ fc = cpu_to_le16(ath12k_dp_rxdesc_get_mpdu_frame_ctrl(ab, rx_desc));
+ hdr_len = ieee80211_hdrlen(fc);
+ skb_push(msdu, hdr_len);
+ hdr = (struct ieee80211_hdr *)msdu->data;
+ hdr->frame_control = fc;
+
+ /* Get wifi header from rx_desc */
+ ath12k_dp_rx_desc_get_dot11_hdr(ab, rx_desc, hdr);
+
+ if (rxcb->is_mcbc)
+ status->flag &= ~RX_FLAG_PN_VALIDATED;
+
+ /* Add QOS header */
+ if (ieee80211_is_data_qos(hdr->frame_control)) {
+ qos_ctl = rxcb->tid;
+ if (ath12k_dp_rx_h_mesh_ctl_present(ab, rx_desc))
+ qos_ctl |= IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT;
+
+ /* TODO: Add other QoS ctl fields when required */
+ memcpy(msdu->data + (hdr_len - IEEE80211_QOS_CTL_LEN),
+ &qos_ctl, IEEE80211_QOS_CTL_LEN);
+ }
+}
+
+static void ath12k_dp_rx_h_undecap_eth(struct ath12k *ar,
+ struct sk_buff *msdu,
+ enum hal_encrypt_type enctype,
+ struct ieee80211_rx_status *status)
+{
+ struct ieee80211_hdr *hdr;
+ struct ethhdr *eth;
+ u8 da[ETH_ALEN];
+ u8 sa[ETH_ALEN];
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
+ struct ath12k_dp_rx_rfc1042_hdr rfc = {0xaa, 0xaa, 0x03, {0x00, 0x00, 0x00}};
+
+ eth = (struct ethhdr *)msdu->data;
+ ether_addr_copy(da, eth->h_dest);
+ ether_addr_copy(sa, eth->h_source);
+ rfc.snap_type = eth->h_proto;
+ skb_pull(msdu, sizeof(struct ethhdr));
+ memcpy(skb_push(msdu, sizeof(struct ath12k_dp_rx_rfc1042_hdr)), &rfc,
+ sizeof(struct ath12k_dp_rx_rfc1042_hdr));
+ ath12k_get_dot11_hdr_from_rx_desc(ar, msdu, rxcb, status, enctype);
+
+ /* original 802.11 header has a different DA and in
+ * case of 4addr it may also have different SA
+ */
+ hdr = (struct ieee80211_hdr *)msdu->data;
+ ether_addr_copy(ieee80211_get_DA(hdr), da);
+ ether_addr_copy(ieee80211_get_SA(hdr), sa);
+}
+
+static void ath12k_dp_rx_h_undecap(struct ath12k *ar, struct sk_buff *msdu,
+ struct hal_rx_desc *rx_desc,
+ enum hal_encrypt_type enctype,
+ struct ieee80211_rx_status *status,
+ bool decrypted)
+{
+ struct ath12k_base *ab = ar->ab;
+ u8 decap;
+ struct ethhdr *ehdr;
+
+ decap = ath12k_dp_rx_h_decap_type(ab, rx_desc);
+
+ switch (decap) {
+ case DP_RX_DECAP_TYPE_NATIVE_WIFI:
+ ath12k_dp_rx_h_undecap_nwifi(ar, msdu, enctype, status);
+ break;
+ case DP_RX_DECAP_TYPE_RAW:
+ ath12k_dp_rx_h_undecap_raw(ar, msdu, enctype, status,
+ decrypted);
+ break;
+ case DP_RX_DECAP_TYPE_ETHERNET2_DIX:
+ ehdr = (struct ethhdr *)msdu->data;
+
+ /* mac80211 allows fast path only for authorized STA */
+ if (ehdr->h_proto == cpu_to_be16(ETH_P_PAE)) {
+ ATH12K_SKB_RXCB(msdu)->is_eapol = true;
+ ath12k_dp_rx_h_undecap_eth(ar, msdu, enctype, status);
+ break;
+ }
+
+ /* PN for mcast packets will be validated in mac80211;
+ * remove eth header and add 802.11 header.
+ */
+ if (ATH12K_SKB_RXCB(msdu)->is_mcbc && decrypted)
+ ath12k_dp_rx_h_undecap_eth(ar, msdu, enctype, status);
+ break;
+ case DP_RX_DECAP_TYPE_8023:
+ /* TODO: Handle undecap for these formats */
+ break;
+ }
+}
+
+struct ath12k_peer *
+ath12k_dp_rx_h_find_peer(struct ath12k_base *ab, struct sk_buff *msdu)
+{
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
+ struct hal_rx_desc *rx_desc = rxcb->rx_desc;
+ struct ath12k_peer *peer = NULL;
+
+ lockdep_assert_held(&ab->base_lock);
+
+ if (rxcb->peer_id)
+ peer = ath12k_peer_find_by_id(ab, rxcb->peer_id);
+
+ if (peer)
+ return peer;
+
+ if (!rx_desc || !(ath12k_dp_rxdesc_mac_addr2_valid(ab, rx_desc)))
+ return NULL;
+
+ peer = ath12k_peer_find_by_addr(ab,
+ ath12k_dp_rxdesc_get_mpdu_start_addr2(ab,
+ rx_desc));
+ return peer;
+}
+
+static void ath12k_dp_rx_h_mpdu(struct ath12k *ar,
+ struct sk_buff *msdu,
+ struct hal_rx_desc *rx_desc,
+ struct ieee80211_rx_status *rx_status)
+{
+ bool fill_crypto_hdr;
+ struct ath12k_base *ab = ar->ab;
+ struct ath12k_skb_rxcb *rxcb;
+ enum hal_encrypt_type enctype;
+ bool is_decrypted = false;
+ struct ieee80211_hdr *hdr;
+ struct ath12k_peer *peer;
+ u32 err_bitmap;
+
+ /* PN for multicast packets will be checked in mac80211 */
+ rxcb = ATH12K_SKB_RXCB(msdu);
+ fill_crypto_hdr = ath12k_dp_rx_h_is_mcbc(ar->ab, rx_desc);
+ rxcb->is_mcbc = fill_crypto_hdr;
+
+ if (rxcb->is_mcbc)
+ rxcb->peer_id = ath12k_dp_rx_h_peer_id(ar->ab, rx_desc);
+
+ spin_lock_bh(&ar->ab->base_lock);
+ peer = ath12k_dp_rx_h_find_peer(ar->ab, msdu);
+ if (peer) {
+ if (rxcb->is_mcbc)
+ enctype = peer->sec_type_grp;
+ else
+ enctype = peer->sec_type;
+ } else {
+ enctype = HAL_ENCRYPT_TYPE_OPEN;
+ }
+ spin_unlock_bh(&ar->ab->base_lock);
+
+ err_bitmap = ath12k_dp_rx_h_mpdu_err(ab, rx_desc);
+ if (enctype != HAL_ENCRYPT_TYPE_OPEN && !err_bitmap)
+ is_decrypted = ath12k_dp_rx_h_is_decrypted(ab, rx_desc);
+
+ /* Clear per-MPDU flags while leaving per-PPDU flags intact */
+ rx_status->flag &= ~(RX_FLAG_FAILED_FCS_CRC |
+ RX_FLAG_MMIC_ERROR |
+ RX_FLAG_DECRYPTED |
+ RX_FLAG_IV_STRIPPED |
+ RX_FLAG_MMIC_STRIPPED);
+
+ if (err_bitmap & HAL_RX_MPDU_ERR_FCS)
+ rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
+ if (err_bitmap & HAL_RX_MPDU_ERR_TKIP_MIC)
+ rx_status->flag |= RX_FLAG_MMIC_ERROR;
+
+ if (is_decrypted) {
+ rx_status->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MMIC_STRIPPED;
+
+ if (fill_crypto_hdr)
+ rx_status->flag |= RX_FLAG_MIC_STRIPPED |
+ RX_FLAG_ICV_STRIPPED;
+ else
+ rx_status->flag |= RX_FLAG_IV_STRIPPED |
+ RX_FLAG_PN_VALIDATED;
+ }
+
+ ath12k_dp_rx_h_csum_offload(ar, msdu);
+ ath12k_dp_rx_h_undecap(ar, msdu, rx_desc,
+ enctype, rx_status, is_decrypted);
+
+ if (!is_decrypted || fill_crypto_hdr)
+ return;
+
+ if (ath12k_dp_rx_h_decap_type(ar->ab, rx_desc) !=
+ DP_RX_DECAP_TYPE_ETHERNET2_DIX) {
+ hdr = (void *)msdu->data;
+ hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+ }
+}
+
+static void ath12k_dp_rx_h_rate(struct ath12k *ar, struct hal_rx_desc *rx_desc,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct ieee80211_supported_band *sband;
+ enum rx_msdu_start_pkt_type pkt_type;
+ u8 bw;
+ u8 rate_mcs, nss;
+ u8 sgi;
+ bool is_cck;
+
+ pkt_type = ath12k_dp_rx_h_pkt_type(ab, rx_desc);
+ bw = ath12k_dp_rx_h_rx_bw(ab, rx_desc);
+ rate_mcs = ath12k_dp_rx_h_rate_mcs(ab, rx_desc);
+ nss = ath12k_dp_rx_h_nss(ab, rx_desc);
+ sgi = ath12k_dp_rx_h_sgi(ab, rx_desc);
+
+ switch (pkt_type) {
+ case RX_MSDU_START_PKT_TYPE_11A:
+ case RX_MSDU_START_PKT_TYPE_11B:
+ is_cck = (pkt_type == RX_MSDU_START_PKT_TYPE_11B);
+ sband = &ar->mac.sbands[rx_status->band];
+ rx_status->rate_idx = ath12k_mac_hw_rate_to_idx(sband, rate_mcs,
+ is_cck);
+ break;
+ case RX_MSDU_START_PKT_TYPE_11N:
+ rx_status->encoding = RX_ENC_HT;
+ if (rate_mcs > ATH12K_HT_MCS_MAX) {
+ ath12k_warn(ar->ab,
+ "Received with invalid mcs in HT mode %d\n",
+ rate_mcs);
+ break;
+ }
+ rx_status->rate_idx = rate_mcs + (8 * (nss - 1));
+ if (sgi)
+ rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
+ rx_status->bw = ath12k_mac_bw_to_mac80211_bw(bw);
+ break;
+ case RX_MSDU_START_PKT_TYPE_11AC:
+ rx_status->encoding = RX_ENC_VHT;
+ rx_status->rate_idx = rate_mcs;
+ if (rate_mcs > ATH12K_VHT_MCS_MAX) {
+ ath12k_warn(ar->ab,
+ "Received with invalid mcs in VHT mode %d\n",
+ rate_mcs);
+ break;
+ }
+ rx_status->nss = nss;
+ if (sgi)
+ rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
+ rx_status->bw = ath12k_mac_bw_to_mac80211_bw(bw);
+ break;
+ case RX_MSDU_START_PKT_TYPE_11AX:
+ rx_status->rate_idx = rate_mcs;
+ if (rate_mcs > ATH12K_HE_MCS_MAX) {
+ ath12k_warn(ar->ab,
+ "Received with invalid mcs in HE mode %d\n",
+ rate_mcs);
+ break;
+ }
+ rx_status->encoding = RX_ENC_HE;
+ rx_status->nss = nss;
+ rx_status->he_gi = ath12k_he_gi_to_nl80211_he_gi(sgi);
+ rx_status->bw = ath12k_mac_bw_to_mac80211_bw(bw);
+ break;
+ }
+}
+
+void ath12k_dp_rx_h_ppdu(struct ath12k *ar, struct hal_rx_desc *rx_desc,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ath12k_base *ab = ar->ab;
+ u8 channel_num;
+ u32 center_freq, meta_data;
+ struct ieee80211_channel *channel;
+
+ rx_status->freq = 0;
+ rx_status->rate_idx = 0;
+ rx_status->nss = 0;
+ rx_status->encoding = RX_ENC_LEGACY;
+ rx_status->bw = RATE_INFO_BW_20;
+
+ rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL;
+
+ meta_data = ath12k_dp_rx_h_freq(ab, rx_desc);
+ channel_num = meta_data;
+ center_freq = meta_data >> 16;
+
+ if (center_freq >= 5935 && center_freq <= 7105) {
+ rx_status->band = NL80211_BAND_6GHZ;
+ } else if (channel_num >= 1 && channel_num <= 14) {
+ rx_status->band = NL80211_BAND_2GHZ;
+ } else if (channel_num >= 36 && channel_num <= 173) {
+ rx_status->band = NL80211_BAND_5GHZ;
+ } else {
+ spin_lock_bh(&ar->data_lock);
+ channel = ar->rx_channel;
+ if (channel) {
+ rx_status->band = channel->band;
+ channel_num =
+ ieee80211_frequency_to_channel(channel->center_freq);
+ }
+ spin_unlock_bh(&ar->data_lock);
+ ath12k_dbg_dump(ar->ab, ATH12K_DBG_DATA, NULL, "rx_desc: ",
+ rx_desc, sizeof(struct hal_rx_desc));
+ }
+
+ rx_status->freq = ieee80211_channel_to_frequency(channel_num,
+ rx_status->band);
+
+ ath12k_dp_rx_h_rate(ar, rx_desc, rx_status);
+}
+
+static void ath12k_dp_rx_deliver_msdu(struct ath12k *ar, struct napi_struct *napi,
+ struct sk_buff *msdu,
+ struct ieee80211_rx_status *status)
+{
+ struct ath12k_base *ab = ar->ab;
+ static const struct ieee80211_radiotap_he known = {
+ .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
+ IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN),
+ .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN),
+ };
+ struct ieee80211_radiotap_he *he = NULL;
+ struct ieee80211_rx_status *rx_status;
+ struct ieee80211_sta *pubsta = NULL;
+ struct ath12k_peer *peer;
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
+ u8 decap = DP_RX_DECAP_TYPE_RAW;
+ bool is_mcbc = rxcb->is_mcbc;
+ bool is_eapol = rxcb->is_eapol;
+
+ if (status->encoding == RX_ENC_HE && !(status->flag & RX_FLAG_RADIOTAP_HE) &&
+ !(status->flag & RX_FLAG_SKIP_MONITOR)) {
+ he = skb_push(msdu, sizeof(known));
+ memcpy(he, &known, sizeof(known));
+ status->flag |= RX_FLAG_RADIOTAP_HE;
+ }
+
+ if (!(status->flag & RX_FLAG_ONLY_MONITOR))
+ decap = ath12k_dp_rx_h_decap_type(ab, rxcb->rx_desc);
+
+ spin_lock_bh(&ab->base_lock);
+ peer = ath12k_dp_rx_h_find_peer(ab, msdu);
+ if (peer && peer->sta)
+ pubsta = peer->sta;
+ spin_unlock_bh(&ab->base_lock);
+
+ ath12k_dbg(ab, ATH12K_DBG_DATA,
+ "rx skb %pK len %u peer %pM %d %s sn %u %s%s%s%s%s%s%s%s rate_idx %u vht_nss %u freq %u band %u flag 0x%x fcs-err %i mic-err %i amsdu-more %i\n",
+ msdu,
+ msdu->len,
+ peer ? peer->addr : NULL,
+ rxcb->tid,
+ is_mcbc ? "mcast" : "ucast",
+ ath12k_dp_rx_h_seq_no(ab, rxcb->rx_desc),
+ (status->encoding == RX_ENC_LEGACY) ? "legacy" : "",
+ (status->encoding == RX_ENC_HT) ? "ht" : "",
+ (status->encoding == RX_ENC_VHT) ? "vht" : "",
+ (status->encoding == RX_ENC_HE) ? "he" : "",
+ (status->bw == RATE_INFO_BW_40) ? "40" : "",
+ (status->bw == RATE_INFO_BW_80) ? "80" : "",
+ (status->bw == RATE_INFO_BW_160) ? "160" : "",
+ status->enc_flags & RX_ENC_FLAG_SHORT_GI ? "sgi " : "",
+ status->rate_idx,
+ status->nss,
+ status->freq,
+ status->band, status->flag,
+ !!(status->flag & RX_FLAG_FAILED_FCS_CRC),
+ !!(status->flag & RX_FLAG_MMIC_ERROR),
+ !!(status->flag & RX_FLAG_AMSDU_MORE));
+
+ ath12k_dbg_dump(ab, ATH12K_DBG_DP_RX, NULL, "dp rx msdu: ",
+ msdu->data, msdu->len);
+
+ rx_status = IEEE80211_SKB_RXCB(msdu);
+ *rx_status = *status;
+
+ /* TODO: trace rx packet */
+
+ /* PN for multicast packets are not validate in HW,
+ * so skip 802.3 rx path
+ * Also, fast_rx expectes the STA to be authorized, hence
+ * eapol packets are sent in slow path.
+ */
+ if (decap == DP_RX_DECAP_TYPE_ETHERNET2_DIX && !is_eapol &&
+ !(is_mcbc && rx_status->flag & RX_FLAG_DECRYPTED))
+ rx_status->flag |= RX_FLAG_8023;
+
+ ieee80211_rx_napi(ar->hw, pubsta, msdu, napi);
+}
+
+static int ath12k_dp_rx_process_msdu(struct ath12k *ar,
+ struct sk_buff *msdu,
+ struct sk_buff_head *msdu_list,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct hal_rx_desc *rx_desc, *lrx_desc;
+ struct ath12k_skb_rxcb *rxcb;
+ struct sk_buff *last_buf;
+ u8 l3_pad_bytes;
+ u16 msdu_len;
+ int ret;
+ u32 hal_rx_desc_sz = ar->ab->hw_params->hal_desc_sz;
+
+ last_buf = ath12k_dp_rx_get_msdu_last_buf(msdu_list, msdu);
+ if (!last_buf) {
+ ath12k_warn(ab,
+ "No valid Rx buffer to access MSDU_END tlv\n");
+ ret = -EIO;
+ goto free_out;
+ }
+
+ rx_desc = (struct hal_rx_desc *)msdu->data;
+ lrx_desc = (struct hal_rx_desc *)last_buf->data;
+ if (!ath12k_dp_rx_h_msdu_done(ab, lrx_desc)) {
+ ath12k_warn(ab, "msdu_done bit in msdu_end is not set\n");
+ ret = -EIO;
+ goto free_out;
+ }
+
+ rxcb = ATH12K_SKB_RXCB(msdu);
+ rxcb->rx_desc = rx_desc;
+ msdu_len = ath12k_dp_rx_h_msdu_len(ab, lrx_desc);
+ l3_pad_bytes = ath12k_dp_rx_h_l3pad(ab, lrx_desc);
+
+ if (rxcb->is_frag) {
+ skb_pull(msdu, hal_rx_desc_sz);
+ } else if (!rxcb->is_continuation) {
+ if ((msdu_len + hal_rx_desc_sz) > DP_RX_BUFFER_SIZE) {
+ ret = -EINVAL;
+ ath12k_warn(ab, "invalid msdu len %u\n", msdu_len);
+ ath12k_dbg_dump(ab, ATH12K_DBG_DATA, NULL, "", rx_desc,
+ sizeof(struct hal_rx_desc));
+ goto free_out;
+ }
+ skb_put(msdu, hal_rx_desc_sz + l3_pad_bytes + msdu_len);
+ skb_pull(msdu, hal_rx_desc_sz + l3_pad_bytes);
+ } else {
+ ret = ath12k_dp_rx_msdu_coalesce(ar, msdu_list,
+ msdu, last_buf,
+ l3_pad_bytes, msdu_len);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to coalesce msdu rx buffer%d\n", ret);
+ goto free_out;
+ }
+ }
+
+ ath12k_dp_rx_h_ppdu(ar, rx_desc, rx_status);
+ ath12k_dp_rx_h_mpdu(ar, msdu, rx_desc, rx_status);
+
+ rx_status->flag |= RX_FLAG_SKIP_MONITOR | RX_FLAG_DUP_VALIDATED;
+
+ return 0;
+
+free_out:
+ return ret;
+}
+
+static void ath12k_dp_rx_process_received_packets(struct ath12k_base *ab,
+ struct napi_struct *napi,
+ struct sk_buff_head *msdu_list,
+ int ring_id)
+{
+ struct ieee80211_rx_status rx_status = {0};
+ struct ath12k_skb_rxcb *rxcb;
+ struct sk_buff *msdu;
+ struct ath12k *ar;
+ u8 mac_id;
+ int ret;
+
+ if (skb_queue_empty(msdu_list))
+ return;
+
+ rcu_read_lock();
+
+ while ((msdu = __skb_dequeue(msdu_list))) {
+ rxcb = ATH12K_SKB_RXCB(msdu);
+ mac_id = rxcb->mac_id;
+ ar = ab->pdevs[mac_id].ar;
+ if (!rcu_dereference(ab->pdevs_active[mac_id])) {
+ dev_kfree_skb_any(msdu);
+ continue;
+ }
+
+ if (test_bit(ATH12K_CAC_RUNNING, &ar->dev_flags)) {
+ dev_kfree_skb_any(msdu);
+ continue;
+ }
+
+ ret = ath12k_dp_rx_process_msdu(ar, msdu, msdu_list, &rx_status);
+ if (ret) {
+ ath12k_dbg(ab, ATH12K_DBG_DATA,
+ "Unable to process msdu %d", ret);
+ dev_kfree_skb_any(msdu);
+ continue;
+ }
+
+ ath12k_dp_rx_deliver_msdu(ar, napi, msdu, &rx_status);
+ }
+
+ rcu_read_unlock();
+}
+
+int ath12k_dp_rx_process(struct ath12k_base *ab, int ring_id,
+ struct napi_struct *napi, int budget)
+{
+ struct ath12k_rx_desc_info *desc_info;
+ struct ath12k_dp *dp = &ab->dp;
+ struct dp_rxdma_ring *rx_ring = &dp->rx_refill_buf_ring;
+ struct hal_reo_dest_ring *desc;
+ int num_buffs_reaped = 0;
+ struct sk_buff_head msdu_list;
+ struct ath12k_skb_rxcb *rxcb;
+ int total_msdu_reaped = 0;
+ struct hal_srng *srng;
+ struct sk_buff *msdu;
+ bool done = false;
+ int mac_id;
+ int i;
+ u64 desc_va;
+
+ __skb_queue_head_init(&msdu_list);
+
+ srng = &ab->hal.srng_list[dp->reo_dst_ring[ring_id].ring_id];
+
+ spin_lock_bh(&srng->lock);
+
+try_again:
+ ath12k_hal_srng_access_begin(ab, srng);
+
+ while ((desc = ath12k_hal_srng_dst_get_next_entry(ab, srng))) {
+ enum hal_reo_dest_ring_push_reason push_reason;
+ u32 cookie;
+
+ cookie = le32_get_bits(desc->buf_addr_info.info1,
+ BUFFER_ADDR_INFO1_SW_COOKIE);
+
+ mac_id = le32_get_bits(desc->info0,
+ HAL_REO_DEST_RING_INFO0_SRC_LINK_ID);
+
+ desc_va = ((u64)le32_to_cpu(desc->buf_va_hi) << 32 |
+ le32_to_cpu(desc->buf_va_lo));
+ desc_info = (struct ath12k_rx_desc_info *)((unsigned long)desc_va);
+
+ /* retry manual desc retrieval */
+ if (!desc_info) {
+ desc_info = ath12k_dp_get_rx_desc(ab, cookie);
+ if (!desc_info) {
+ ath12k_warn(ab, "Invalid cookie in manual desc retrival");
+ continue;
+ }
+ }
+
+ if (desc_info->magic != ATH12K_DP_RX_DESC_MAGIC)
+ ath12k_warn(ab, "Check HW CC implementation");
+
+ msdu = desc_info->skb;
+ desc_info->skb = NULL;
+
+ spin_lock_bh(&dp->rx_desc_lock);
+ list_move_tail(&desc_info->list, &dp->rx_desc_free_list);
+ spin_unlock_bh(&dp->rx_desc_lock);
+
+ rxcb = ATH12K_SKB_RXCB(msdu);
+ dma_unmap_single(ab->dev, rxcb->paddr,
+ msdu->len + skb_tailroom(msdu),
+ DMA_FROM_DEVICE);
+
+ num_buffs_reaped++;
+
+ push_reason = le32_get_bits(desc->info0,
+ HAL_REO_DEST_RING_INFO0_PUSH_REASON);
+ if (push_reason !=
+ HAL_REO_DEST_RING_PUSH_REASON_ROUTING_INSTRUCTION) {
+ dev_kfree_skb_any(msdu);
+ ab->soc_stats.hal_reo_error[dp->reo_dst_ring[ring_id].ring_id]++;
+ continue;
+ }
+
+ rxcb->is_first_msdu = !!(le32_to_cpu(desc->rx_msdu_info.info0) &
+ RX_MSDU_DESC_INFO0_FIRST_MSDU_IN_MPDU);
+ rxcb->is_last_msdu = !!(le32_to_cpu(desc->rx_msdu_info.info0) &
+ RX_MSDU_DESC_INFO0_LAST_MSDU_IN_MPDU);
+ rxcb->is_continuation = !!(le32_to_cpu(desc->rx_msdu_info.info0) &
+ RX_MSDU_DESC_INFO0_MSDU_CONTINUATION);
+ rxcb->mac_id = mac_id;
+ rxcb->peer_id = le32_get_bits(desc->rx_mpdu_info.peer_meta_data,
+ RX_MPDU_DESC_META_DATA_PEER_ID);
+ rxcb->tid = le32_get_bits(desc->rx_mpdu_info.info0,
+ RX_MPDU_DESC_INFO0_TID);
+
+ __skb_queue_tail(&msdu_list, msdu);
+
+ if (!rxcb->is_continuation) {
+ total_msdu_reaped++;
+ done = true;
+ } else {
+ done = false;
+ }
+
+ if (total_msdu_reaped >= budget)
+ break;
+ }
+
+ /* Hw might have updated the head pointer after we cached it.
+ * In this case, even though there are entries in the ring we'll
+ * get rx_desc NULL. Give the read another try with updated cached
+ * head pointer so that we can reap complete MPDU in the current
+ * rx processing.
+ */
+ if (!done && ath12k_hal_srng_dst_num_free(ab, srng, true)) {
+ ath12k_hal_srng_access_end(ab, srng);
+ goto try_again;
+ }
+
+ ath12k_hal_srng_access_end(ab, srng);
+
+ spin_unlock_bh(&srng->lock);
+
+ if (!total_msdu_reaped)
+ goto exit;
+
+ /* TODO: Move to implicit BM? */
+ ath12k_dp_rx_bufs_replenish(ab, i, rx_ring, num_buffs_reaped,
+ ab->hw_params->hal_params->rx_buf_rbm, true);
+
+ ath12k_dp_rx_process_received_packets(ab, napi, &msdu_list,
+ ring_id);
+
+exit:
+ return total_msdu_reaped;
+}
+
+static void ath12k_dp_rx_frag_timer(struct timer_list *timer)
+{
+ struct ath12k_dp_rx_tid *rx_tid = from_timer(rx_tid, timer, frag_timer);
+
+ spin_lock_bh(&rx_tid->ab->base_lock);
+ if (rx_tid->last_frag_no &&
+ rx_tid->rx_frag_bitmap == GENMASK(rx_tid->last_frag_no, 0)) {
+ spin_unlock_bh(&rx_tid->ab->base_lock);
+ return;
+ }
+ ath12k_dp_rx_frags_cleanup(rx_tid, true);
+ spin_unlock_bh(&rx_tid->ab->base_lock);
+}
+
+int ath12k_dp_rx_peer_frag_setup(struct ath12k *ar, const u8 *peer_mac, int vdev_id)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct crypto_shash *tfm;
+ struct ath12k_peer *peer;
+ struct ath12k_dp_rx_tid *rx_tid;
+ int i;
+
+ tfm = crypto_alloc_shash("michael_mic", 0, 0);
+ if (IS_ERR(tfm))
+ return PTR_ERR(tfm);
+
+ spin_lock_bh(&ab->base_lock);
+
+ peer = ath12k_peer_find(ab, vdev_id, peer_mac);
+ if (!peer) {
+ ath12k_warn(ab, "failed to find the peer to set up fragment info\n");
+ spin_unlock_bh(&ab->base_lock);
+ return -ENOENT;
+ }
+
+ for (i = 0; i <= IEEE80211_NUM_TIDS; i++) {
+ rx_tid = &peer->rx_tid[i];
+ rx_tid->ab = ab;
+ timer_setup(&rx_tid->frag_timer, ath12k_dp_rx_frag_timer, 0);
+ skb_queue_head_init(&rx_tid->rx_frags);
+ }
+
+ peer->tfm_mmic = tfm;
+ spin_unlock_bh(&ab->base_lock);
+
+ return 0;
+}
+
+static int ath12k_dp_rx_h_michael_mic(struct crypto_shash *tfm, u8 *key,
+ struct ieee80211_hdr *hdr, u8 *data,
+ size_t data_len, u8 *mic)
+{
+ SHASH_DESC_ON_STACK(desc, tfm);
+ u8 mic_hdr[16] = {0};
+ u8 tid = 0;
+ int ret;
+
+ if (!tfm)
+ return -EINVAL;
+
+ desc->tfm = tfm;
+
+ ret = crypto_shash_setkey(tfm, key, 8);
+ if (ret)
+ goto out;
+
+ ret = crypto_shash_init(desc);
+ if (ret)
+ goto out;
+
+ /* TKIP MIC header */
+ memcpy(mic_hdr, ieee80211_get_DA(hdr), ETH_ALEN);
+ memcpy(mic_hdr + ETH_ALEN, ieee80211_get_SA(hdr), ETH_ALEN);
+ if (ieee80211_is_data_qos(hdr->frame_control))
+ tid = ieee80211_get_tid(hdr);
+ mic_hdr[12] = tid;
+
+ ret = crypto_shash_update(desc, mic_hdr, 16);
+ if (ret)
+ goto out;
+ ret = crypto_shash_update(desc, data, data_len);
+ if (ret)
+ goto out;
+ ret = crypto_shash_final(desc, mic);
+out:
+ shash_desc_zero(desc);
+ return ret;
+}
+
+static int ath12k_dp_rx_h_verify_tkip_mic(struct ath12k *ar, struct ath12k_peer *peer,
+ struct sk_buff *msdu)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct hal_rx_desc *rx_desc = (struct hal_rx_desc *)msdu->data;
+ struct ieee80211_rx_status *rxs = IEEE80211_SKB_RXCB(msdu);
+ struct ieee80211_key_conf *key_conf;
+ struct ieee80211_hdr *hdr;
+ u8 mic[IEEE80211_CCMP_MIC_LEN];
+ int head_len, tail_len, ret;
+ size_t data_len;
+ u32 hdr_len, hal_rx_desc_sz = ar->ab->hw_params->hal_desc_sz;
+ u8 *key, *data;
+ u8 key_idx;
+
+ if (ath12k_dp_rx_h_enctype(ab, rx_desc) != HAL_ENCRYPT_TYPE_TKIP_MIC)
+ return 0;
+
+ hdr = (struct ieee80211_hdr *)(msdu->data + hal_rx_desc_sz);
+ hdr_len = ieee80211_hdrlen(hdr->frame_control);
+ head_len = hdr_len + hal_rx_desc_sz + IEEE80211_TKIP_IV_LEN;
+ tail_len = IEEE80211_CCMP_MIC_LEN + IEEE80211_TKIP_ICV_LEN + FCS_LEN;
+
+ if (!is_multicast_ether_addr(hdr->addr1))
+ key_idx = peer->ucast_keyidx;
+ else
+ key_idx = peer->mcast_keyidx;
+
+ key_conf = peer->keys[key_idx];
+
+ data = msdu->data + head_len;
+ data_len = msdu->len - head_len - tail_len;
+ key = &key_conf->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY];
+
+ ret = ath12k_dp_rx_h_michael_mic(peer->tfm_mmic, key, hdr, data, data_len, mic);
+ if (ret || memcmp(mic, data + data_len, IEEE80211_CCMP_MIC_LEN))
+ goto mic_fail;
+
+ return 0;
+
+mic_fail:
+ (ATH12K_SKB_RXCB(msdu))->is_first_msdu = true;
+ (ATH12K_SKB_RXCB(msdu))->is_last_msdu = true;
+
+ rxs->flag |= RX_FLAG_MMIC_ERROR | RX_FLAG_MMIC_STRIPPED |
+ RX_FLAG_IV_STRIPPED | RX_FLAG_DECRYPTED;
+ skb_pull(msdu, hal_rx_desc_sz);
+
+ ath12k_dp_rx_h_ppdu(ar, rx_desc, rxs);
+ ath12k_dp_rx_h_undecap(ar, msdu, rx_desc,
+ HAL_ENCRYPT_TYPE_TKIP_MIC, rxs, true);
+ ieee80211_rx(ar->hw, msdu);
+ return -EINVAL;
+}
+
+static void ath12k_dp_rx_h_undecap_frag(struct ath12k *ar, struct sk_buff *msdu,
+ enum hal_encrypt_type enctype, u32 flags)
+{
+ struct ieee80211_hdr *hdr;
+ size_t hdr_len;
+ size_t crypto_len;
+ u32 hal_rx_desc_sz = ar->ab->hw_params->hal_desc_sz;
+
+ if (!flags)
+ return;
+
+ hdr = (struct ieee80211_hdr *)(msdu->data + hal_rx_desc_sz);
+
+ if (flags & RX_FLAG_MIC_STRIPPED)
+ skb_trim(msdu, msdu->len -
+ ath12k_dp_rx_crypto_mic_len(ar, enctype));
+
+ if (flags & RX_FLAG_ICV_STRIPPED)
+ skb_trim(msdu, msdu->len -
+ ath12k_dp_rx_crypto_icv_len(ar, enctype));
+
+ if (flags & RX_FLAG_IV_STRIPPED) {
+ hdr_len = ieee80211_hdrlen(hdr->frame_control);
+ crypto_len = ath12k_dp_rx_crypto_param_len(ar, enctype);
+
+ memmove(msdu->data + hal_rx_desc_sz + crypto_len,
+ msdu->data + hal_rx_desc_sz, hdr_len);
+ skb_pull(msdu, crypto_len);
+ }
+}
+
+static int ath12k_dp_rx_h_defrag(struct ath12k *ar,
+ struct ath12k_peer *peer,
+ struct ath12k_dp_rx_tid *rx_tid,
+ struct sk_buff **defrag_skb)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct hal_rx_desc *rx_desc;
+ struct sk_buff *skb, *first_frag, *last_frag;
+ struct ieee80211_hdr *hdr;
+ enum hal_encrypt_type enctype;
+ bool is_decrypted = false;
+ int msdu_len = 0;
+ int extra_space;
+ u32 flags, hal_rx_desc_sz = ar->ab->hw_params->hal_desc_sz;
+
+ first_frag = skb_peek(&rx_tid->rx_frags);
+ last_frag = skb_peek_tail(&rx_tid->rx_frags);
+
+ skb_queue_walk(&rx_tid->rx_frags, skb) {
+ flags = 0;
+ rx_desc = (struct hal_rx_desc *)skb->data;
+ hdr = (struct ieee80211_hdr *)(skb->data + hal_rx_desc_sz);
+
+ enctype = ath12k_dp_rx_h_enctype(ab, rx_desc);
+ if (enctype != HAL_ENCRYPT_TYPE_OPEN)
+ is_decrypted = ath12k_dp_rx_h_is_decrypted(ab,
+ rx_desc);
+
+ if (is_decrypted) {
+ if (skb != first_frag)
+ flags |= RX_FLAG_IV_STRIPPED;
+ if (skb != last_frag)
+ flags |= RX_FLAG_ICV_STRIPPED |
+ RX_FLAG_MIC_STRIPPED;
+ }
+
+ /* RX fragments are always raw packets */
+ if (skb != last_frag)
+ skb_trim(skb, skb->len - FCS_LEN);
+ ath12k_dp_rx_h_undecap_frag(ar, skb, enctype, flags);
+
+ if (skb != first_frag)
+ skb_pull(skb, hal_rx_desc_sz +
+ ieee80211_hdrlen(hdr->frame_control));
+ msdu_len += skb->len;
+ }
+
+ extra_space = msdu_len - (DP_RX_BUFFER_SIZE + skb_tailroom(first_frag));
+ if (extra_space > 0 &&
+ (pskb_expand_head(first_frag, 0, extra_space, GFP_ATOMIC) < 0))
+ return -ENOMEM;
+
+ __skb_unlink(first_frag, &rx_tid->rx_frags);
+ while ((skb = __skb_dequeue(&rx_tid->rx_frags))) {
+ skb_put_data(first_frag, skb->data, skb->len);
+ dev_kfree_skb_any(skb);
+ }
+
+ hdr = (struct ieee80211_hdr *)(first_frag->data + hal_rx_desc_sz);
+ hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_MOREFRAGS);
+ ATH12K_SKB_RXCB(first_frag)->is_frag = 1;
+
+ if (ath12k_dp_rx_h_verify_tkip_mic(ar, peer, first_frag))
+ first_frag = NULL;
+
+ *defrag_skb = first_frag;
+ return 0;
+}
+
+static int ath12k_dp_rx_h_defrag_reo_reinject(struct ath12k *ar,
+ struct ath12k_dp_rx_tid *rx_tid,
+ struct sk_buff *defrag_skb)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct ath12k_dp *dp = &ab->dp;
+ struct hal_rx_desc *rx_desc = (struct hal_rx_desc *)defrag_skb->data;
+ struct hal_reo_entrance_ring *reo_ent_ring;
+ struct hal_reo_dest_ring *reo_dest_ring;
+ struct dp_link_desc_bank *link_desc_banks;
+ struct hal_rx_msdu_link *msdu_link;
+ struct hal_rx_msdu_details *msdu0;
+ struct hal_srng *srng;
+ dma_addr_t link_paddr, buf_paddr;
+ u32 desc_bank, msdu_info, msdu_ext_info, mpdu_info;
+ u32 cookie, hal_rx_desc_sz, dest_ring_info0;
+ int ret;
+ struct ath12k_rx_desc_info *desc_info;
+ u8 dst_ind;
+
+ hal_rx_desc_sz = ab->hw_params->hal_desc_sz;
+ link_desc_banks = dp->link_desc_banks;
+ reo_dest_ring = rx_tid->dst_ring_desc;
+
+ ath12k_hal_rx_reo_ent_paddr_get(ab, &reo_dest_ring->buf_addr_info,
+ &link_paddr, &cookie);
+ desc_bank = u32_get_bits(cookie, DP_LINK_DESC_BANK_MASK);
+
+ msdu_link = (struct hal_rx_msdu_link *)(link_desc_banks[desc_bank].vaddr +
+ (link_paddr - link_desc_banks[desc_bank].paddr));
+ msdu0 = &msdu_link->msdu_link[0];
+ msdu_ext_info = le32_to_cpu(msdu0->rx_msdu_ext_info.info0);
+ dst_ind = u32_get_bits(msdu_ext_info, RX_MSDU_EXT_DESC_INFO0_REO_DEST_IND);
+
+ memset(msdu0, 0, sizeof(*msdu0));
+
+ msdu_info = u32_encode_bits(1, RX_MSDU_DESC_INFO0_FIRST_MSDU_IN_MPDU) |
+ u32_encode_bits(1, RX_MSDU_DESC_INFO0_LAST_MSDU_IN_MPDU) |
+ u32_encode_bits(0, RX_MSDU_DESC_INFO0_MSDU_CONTINUATION) |
+ u32_encode_bits(defrag_skb->len - hal_rx_desc_sz,
+ RX_MSDU_DESC_INFO0_MSDU_LENGTH) |
+ u32_encode_bits(1, RX_MSDU_DESC_INFO0_VALID_SA) |
+ u32_encode_bits(1, RX_MSDU_DESC_INFO0_VALID_DA);
+ msdu0->rx_msdu_info.info0 = cpu_to_le32(msdu_info);
+ msdu0->rx_msdu_ext_info.info0 = cpu_to_le32(msdu_ext_info);
+
+ /* change msdu len in hal rx desc */
+ ath12k_dp_rxdesc_set_msdu_len(ab, rx_desc, defrag_skb->len - hal_rx_desc_sz);
+
+ buf_paddr = dma_map_single(ab->dev, defrag_skb->data,
+ defrag_skb->len + skb_tailroom(defrag_skb),
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(ab->dev, buf_paddr))
+ return -ENOMEM;
+
+ spin_lock_bh(&dp->rx_desc_lock);
+ desc_info = list_first_entry_or_null(&dp->rx_desc_free_list,
+ struct ath12k_rx_desc_info,
+ list);
+ if (!desc_info) {
+ ath12k_warn(ab, "failed to find rx desc for reinject\n");
+ ret = -ENOMEM;
+ spin_unlock_bh(&dp->rx_desc_lock);
+ goto err_unmap_dma;
+ }
+
+ desc_info->skb = defrag_skb;
+
+ list_del(&desc_info->list);
+ list_add_tail(&desc_info->list, &dp->rx_desc_used_list);
+ spin_unlock_bh(&dp->rx_desc_lock);
+
+ ATH12K_SKB_RXCB(defrag_skb)->paddr = buf_paddr;
+
+ ath12k_hal_rx_buf_addr_info_set(&msdu0->buf_addr_info, buf_paddr,
+ desc_info->cookie,
+ HAL_RX_BUF_RBM_SW3_BM);
+
+ /* Fill mpdu details into reo entrace ring */
+ srng = &ab->hal.srng_list[dp->reo_reinject_ring.ring_id];
+
+ spin_lock_bh(&srng->lock);
+ ath12k_hal_srng_access_begin(ab, srng);
+
+ reo_ent_ring = ath12k_hal_srng_src_get_next_entry(ab, srng);
+ if (!reo_ent_ring) {
+ ath12k_hal_srng_access_end(ab, srng);
+ spin_unlock_bh(&srng->lock);
+ ret = -ENOSPC;
+ goto err_free_desc;
+ }
+ memset(reo_ent_ring, 0, sizeof(*reo_ent_ring));
+
+ ath12k_hal_rx_buf_addr_info_set(&reo_ent_ring->buf_addr_info, link_paddr,
+ cookie,
+ HAL_RX_BUF_RBM_WBM_CHIP0_IDLE_DESC_LIST);
+
+ mpdu_info = u32_encode_bits(1, RX_MPDU_DESC_INFO0_MSDU_COUNT) |
+ u32_encode_bits(0, RX_MPDU_DESC_INFO0_FRAG_FLAG) |
+ u32_encode_bits(1, RX_MPDU_DESC_INFO0_RAW_MPDU) |
+ u32_encode_bits(1, RX_MPDU_DESC_INFO0_VALID_PN) |
+ u32_encode_bits(rx_tid->tid, RX_MPDU_DESC_INFO0_TID);
+
+ reo_ent_ring->rx_mpdu_info.info0 = cpu_to_le32(mpdu_info);
+ reo_ent_ring->rx_mpdu_info.peer_meta_data =
+ reo_dest_ring->rx_mpdu_info.peer_meta_data;
+
+ reo_ent_ring->queue_addr_lo = cpu_to_le32(lower_32_bits(rx_tid->paddr));
+ reo_ent_ring->info0 = le32_encode_bits(upper_32_bits(rx_tid->paddr),
+ HAL_REO_ENTR_RING_INFO0_QUEUE_ADDR_HI) |
+ le32_encode_bits(dst_ind, HAL_REO_ENTR_RING_INFO0_DEST_IND);
+
+ reo_ent_ring->info1 = le32_encode_bits(rx_tid->cur_sn,
+ HAL_REO_ENTR_RING_INFO1_MPDU_SEQ_NUM);
+ dest_ring_info0 = le32_get_bits(reo_dest_ring->info0,
+ HAL_REO_DEST_RING_INFO0_SRC_LINK_ID);
+ reo_ent_ring->info2 =
+ cpu_to_le32(u32_get_bits(dest_ring_info0,
+ HAL_REO_ENTR_RING_INFO2_SRC_LINK_ID));
+
+ ath12k_hal_srng_access_end(ab, srng);
+ spin_unlock_bh(&srng->lock);
+
+ return 0;
+
+err_free_desc:
+ spin_lock_bh(&dp->rx_desc_lock);
+ list_del(&desc_info->list);
+ list_add_tail(&desc_info->list, &dp->rx_desc_free_list);
+ desc_info->skb = NULL;
+ spin_unlock_bh(&dp->rx_desc_lock);
+err_unmap_dma:
+ dma_unmap_single(ab->dev, buf_paddr, defrag_skb->len + skb_tailroom(defrag_skb),
+ DMA_FROM_DEVICE);
+ return ret;
+}
+
+static int ath12k_dp_rx_h_cmp_frags(struct ath12k_base *ab,
+ struct sk_buff *a, struct sk_buff *b)
+{
+ int frag1, frag2;
+
+ frag1 = ath12k_dp_rx_h_frag_no(ab, a);
+ frag2 = ath12k_dp_rx_h_frag_no(ab, b);
+
+ return frag1 - frag2;
+}
+
+static void ath12k_dp_rx_h_sort_frags(struct ath12k_base *ab,
+ struct sk_buff_head *frag_list,
+ struct sk_buff *cur_frag)
+{
+ struct sk_buff *skb;
+ int cmp;
+
+ skb_queue_walk(frag_list, skb) {
+ cmp = ath12k_dp_rx_h_cmp_frags(ab, skb, cur_frag);
+ if (cmp < 0)
+ continue;
+ __skb_queue_before(frag_list, skb, cur_frag);
+ return;
+ }
+ __skb_queue_tail(frag_list, cur_frag);
+}
+
+static u64 ath12k_dp_rx_h_get_pn(struct ath12k *ar, struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr;
+ u64 pn = 0;
+ u8 *ehdr;
+ u32 hal_rx_desc_sz = ar->ab->hw_params->hal_desc_sz;
+
+ hdr = (struct ieee80211_hdr *)(skb->data + hal_rx_desc_sz);
+ ehdr = skb->data + hal_rx_desc_sz + ieee80211_hdrlen(hdr->frame_control);
+
+ pn = ehdr[0];
+ pn |= (u64)ehdr[1] << 8;
+ pn |= (u64)ehdr[4] << 16;
+ pn |= (u64)ehdr[5] << 24;
+ pn |= (u64)ehdr[6] << 32;
+ pn |= (u64)ehdr[7] << 40;
+
+ return pn;
+}
+
+static bool
+ath12k_dp_rx_h_defrag_validate_incr_pn(struct ath12k *ar, struct ath12k_dp_rx_tid *rx_tid)
+{
+ struct ath12k_base *ab = ar->ab;
+ enum hal_encrypt_type encrypt_type;
+ struct sk_buff *first_frag, *skb;
+ struct hal_rx_desc *desc;
+ u64 last_pn;
+ u64 cur_pn;
+
+ first_frag = skb_peek(&rx_tid->rx_frags);
+ desc = (struct hal_rx_desc *)first_frag->data;
+
+ encrypt_type = ath12k_dp_rx_h_enctype(ab, desc);
+ if (encrypt_type != HAL_ENCRYPT_TYPE_CCMP_128 &&
+ encrypt_type != HAL_ENCRYPT_TYPE_CCMP_256 &&
+ encrypt_type != HAL_ENCRYPT_TYPE_GCMP_128 &&
+ encrypt_type != HAL_ENCRYPT_TYPE_AES_GCMP_256)
+ return true;
+
+ last_pn = ath12k_dp_rx_h_get_pn(ar, first_frag);
+ skb_queue_walk(&rx_tid->rx_frags, skb) {
+ if (skb == first_frag)
+ continue;
+
+ cur_pn = ath12k_dp_rx_h_get_pn(ar, skb);
+ if (cur_pn != last_pn + 1)
+ return false;
+ last_pn = cur_pn;
+ }
+ return true;
+}
+
+static int ath12k_dp_rx_frag_h_mpdu(struct ath12k *ar,
+ struct sk_buff *msdu,
+ struct hal_reo_dest_ring *ring_desc)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct hal_rx_desc *rx_desc;
+ struct ath12k_peer *peer;
+ struct ath12k_dp_rx_tid *rx_tid;
+ struct sk_buff *defrag_skb = NULL;
+ u32 peer_id;
+ u16 seqno, frag_no;
+ u8 tid;
+ int ret = 0;
+ bool more_frags;
+
+ rx_desc = (struct hal_rx_desc *)msdu->data;
+ peer_id = ath12k_dp_rx_h_peer_id(ab, rx_desc);
+ tid = ath12k_dp_rx_h_tid(ab, rx_desc);
+ seqno = ath12k_dp_rx_h_seq_no(ab, rx_desc);
+ frag_no = ath12k_dp_rx_h_frag_no(ab, msdu);
+ more_frags = ath12k_dp_rx_h_more_frags(ab, msdu);
+
+ if (!ath12k_dp_rx_h_seq_ctrl_valid(ab, rx_desc) ||
+ !ath12k_dp_rx_h_fc_valid(ab, rx_desc) ||
+ tid > IEEE80211_NUM_TIDS)
+ return -EINVAL;
+
+ /* received unfragmented packet in reo
+ * exception ring, this shouldn't happen
+ * as these packets typically come from
+ * reo2sw srngs.
+ */
+ if (WARN_ON_ONCE(!frag_no && !more_frags))
+ return -EINVAL;
+
+ spin_lock_bh(&ab->base_lock);
+ peer = ath12k_peer_find_by_id(ab, peer_id);
+ if (!peer) {
+ ath12k_warn(ab, "failed to find the peer to de-fragment received fragment peer_id %d\n",
+ peer_id);
+ ret = -ENOENT;
+ goto out_unlock;
+ }
+ rx_tid = &peer->rx_tid[tid];
+
+ if ((!skb_queue_empty(&rx_tid->rx_frags) && seqno != rx_tid->cur_sn) ||
+ skb_queue_empty(&rx_tid->rx_frags)) {
+ /* Flush stored fragments and start a new sequence */
+ ath12k_dp_rx_frags_cleanup(rx_tid, true);
+ rx_tid->cur_sn = seqno;
+ }
+
+ if (rx_tid->rx_frag_bitmap & BIT(frag_no)) {
+ /* Fragment already present */
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ if (frag_no > __fls(rx_tid->rx_frag_bitmap))
+ __skb_queue_tail(&rx_tid->rx_frags, msdu);
+ else
+ ath12k_dp_rx_h_sort_frags(ab, &rx_tid->rx_frags, msdu);
+
+ rx_tid->rx_frag_bitmap |= BIT(frag_no);
+ if (!more_frags)
+ rx_tid->last_frag_no = frag_no;
+
+ if (frag_no == 0) {
+ rx_tid->dst_ring_desc = kmemdup(ring_desc,
+ sizeof(*rx_tid->dst_ring_desc),
+ GFP_ATOMIC);
+ if (!rx_tid->dst_ring_desc) {
+ ret = -ENOMEM;
+ goto out_unlock;
+ }
+ } else {
+ ath12k_dp_rx_link_desc_return(ab, ring_desc,
+ HAL_WBM_REL_BM_ACT_PUT_IN_IDLE);
+ }
+
+ if (!rx_tid->last_frag_no ||
+ rx_tid->rx_frag_bitmap != GENMASK(rx_tid->last_frag_no, 0)) {
+ mod_timer(&rx_tid->frag_timer, jiffies +
+ ATH12K_DP_RX_FRAGMENT_TIMEOUT_MS);
+ goto out_unlock;
+ }
+
+ spin_unlock_bh(&ab->base_lock);
+ del_timer_sync(&rx_tid->frag_timer);
+ spin_lock_bh(&ab->base_lock);
+
+ peer = ath12k_peer_find_by_id(ab, peer_id);
+ if (!peer)
+ goto err_frags_cleanup;
+
+ if (!ath12k_dp_rx_h_defrag_validate_incr_pn(ar, rx_tid))
+ goto err_frags_cleanup;
+
+ if (ath12k_dp_rx_h_defrag(ar, peer, rx_tid, &defrag_skb))
+ goto err_frags_cleanup;
+
+ if (!defrag_skb)
+ goto err_frags_cleanup;
+
+ if (ath12k_dp_rx_h_defrag_reo_reinject(ar, rx_tid, defrag_skb))
+ goto err_frags_cleanup;
+
+ ath12k_dp_rx_frags_cleanup(rx_tid, false);
+ goto out_unlock;
+
+err_frags_cleanup:
+ dev_kfree_skb_any(defrag_skb);
+ ath12k_dp_rx_frags_cleanup(rx_tid, true);
+out_unlock:
+ spin_unlock_bh(&ab->base_lock);
+ return ret;
+}
+
+static int
+ath12k_dp_process_rx_err_buf(struct ath12k *ar, struct hal_reo_dest_ring *desc,
+ bool drop, u32 cookie)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct sk_buff *msdu;
+ struct ath12k_skb_rxcb *rxcb;
+ struct hal_rx_desc *rx_desc;
+ u16 msdu_len;
+ u32 hal_rx_desc_sz = ab->hw_params->hal_desc_sz;
+ struct ath12k_rx_desc_info *desc_info;
+ u64 desc_va;
+
+ desc_va = ((u64)le32_to_cpu(desc->buf_va_hi) << 32 |
+ le32_to_cpu(desc->buf_va_lo));
+ desc_info = (struct ath12k_rx_desc_info *)((unsigned long)desc_va);
+
+ /* retry manual desc retrieval */
+ if (!desc_info) {
+ desc_info = ath12k_dp_get_rx_desc(ab, cookie);
+ if (!desc_info) {
+ ath12k_warn(ab, "Invalid cookie in manual desc retrival");
+ return -EINVAL;
+ }
+ }
+
+ if (desc_info->magic != ATH12K_DP_RX_DESC_MAGIC)
+ ath12k_warn(ab, " RX Exception, Check HW CC implementation");
+
+ msdu = desc_info->skb;
+ desc_info->skb = NULL;
+ spin_lock_bh(&ab->dp.rx_desc_lock);
+ list_move_tail(&desc_info->list, &ab->dp.rx_desc_free_list);
+ spin_unlock_bh(&ab->dp.rx_desc_lock);
+
+ rxcb = ATH12K_SKB_RXCB(msdu);
+ dma_unmap_single(ar->ab->dev, rxcb->paddr,
+ msdu->len + skb_tailroom(msdu),
+ DMA_FROM_DEVICE);
+
+ if (drop) {
+ dev_kfree_skb_any(msdu);
+ return 0;
+ }
+
+ rcu_read_lock();
+ if (!rcu_dereference(ar->ab->pdevs_active[ar->pdev_idx])) {
+ dev_kfree_skb_any(msdu);
+ goto exit;
+ }
+
+ if (test_bit(ATH12K_CAC_RUNNING, &ar->dev_flags)) {
+ dev_kfree_skb_any(msdu);
+ goto exit;
+ }
+
+ rx_desc = (struct hal_rx_desc *)msdu->data;
+ msdu_len = ath12k_dp_rx_h_msdu_len(ar->ab, rx_desc);
+ if ((msdu_len + hal_rx_desc_sz) > DP_RX_BUFFER_SIZE) {
+ ath12k_warn(ar->ab, "invalid msdu leng %u", msdu_len);
+ ath12k_dbg_dump(ar->ab, ATH12K_DBG_DATA, NULL, "", rx_desc,
+ sizeof(struct hal_rx_desc));
+ dev_kfree_skb_any(msdu);
+ goto exit;
+ }
+
+ skb_put(msdu, hal_rx_desc_sz + msdu_len);
+
+ if (ath12k_dp_rx_frag_h_mpdu(ar, msdu, desc)) {
+ dev_kfree_skb_any(msdu);
+ ath12k_dp_rx_link_desc_return(ar->ab, desc,
+ HAL_WBM_REL_BM_ACT_PUT_IN_IDLE);
+ }
+exit:
+ rcu_read_unlock();
+ return 0;
+}
+
+int ath12k_dp_rx_process_err(struct ath12k_base *ab, struct napi_struct *napi,
+ int budget)
+{
+ u32 msdu_cookies[HAL_NUM_RX_MSDUS_PER_LINK_DESC];
+ struct dp_link_desc_bank *link_desc_banks;
+ enum hal_rx_buf_return_buf_manager rbm;
+ struct hal_rx_msdu_link *link_desc_va;
+ int tot_n_bufs_reaped, quota, ret, i;
+ struct hal_reo_dest_ring *reo_desc;
+ struct dp_rxdma_ring *rx_ring;
+ struct dp_srng *reo_except;
+ u32 desc_bank, num_msdus;
+ struct hal_srng *srng;
+ struct ath12k_dp *dp;
+ int mac_id;
+ struct ath12k *ar;
+ dma_addr_t paddr;
+ bool is_frag;
+ u8 drop = 0;
+
+ tot_n_bufs_reaped = 0;
+ quota = budget;
+
+ dp = &ab->dp;
+ reo_except = &dp->reo_except_ring;
+ link_desc_banks = dp->link_desc_banks;
+
+ srng = &ab->hal.srng_list[reo_except->ring_id];
+
+ spin_lock_bh(&srng->lock);
+
+ ath12k_hal_srng_access_begin(ab, srng);
+
+ while (budget &&
+ (reo_desc = ath12k_hal_srng_dst_get_next_entry(ab, srng))) {
+ ab->soc_stats.err_ring_pkts++;
+ ret = ath12k_hal_desc_reo_parse_err(ab, reo_desc, &paddr,
+ &desc_bank);
+ if (ret) {
+ ath12k_warn(ab, "failed to parse error reo desc %d\n",
+ ret);
+ continue;
+ }
+ link_desc_va = link_desc_banks[desc_bank].vaddr +
+ (paddr - link_desc_banks[desc_bank].paddr);
+ ath12k_hal_rx_msdu_link_info_get(link_desc_va, &num_msdus, msdu_cookies,
+ &rbm);
+ if (rbm != HAL_RX_BUF_RBM_WBM_CHIP0_IDLE_DESC_LIST &&
+ rbm != HAL_RX_BUF_RBM_SW3_BM &&
+ rbm != ab->hw_params->hal_params->rx_buf_rbm) {
+ ab->soc_stats.invalid_rbm++;
+ ath12k_warn(ab, "invalid return buffer manager %d\n", rbm);
+ ath12k_dp_rx_link_desc_return(ab, reo_desc,
+ HAL_WBM_REL_BM_ACT_REL_MSDU);
+ continue;
+ }
+
+ is_frag = !!(le32_to_cpu(reo_desc->rx_mpdu_info.info0) &
+ RX_MPDU_DESC_INFO0_FRAG_FLAG);
+
+ /* Process only rx fragments with one msdu per link desc below, and drop
+ * msdu's indicated due to error reasons.
+ */
+ if (!is_frag || num_msdus > 1) {
+ drop = 1;
+ /* Return the link desc back to wbm idle list */
+ ath12k_dp_rx_link_desc_return(ab, reo_desc,
+ HAL_WBM_REL_BM_ACT_PUT_IN_IDLE);
+ }
+
+ for (i = 0; i < num_msdus; i++) {
+ mac_id = le32_get_bits(reo_desc->info0,
+ HAL_REO_DEST_RING_INFO0_SRC_LINK_ID);
+
+ ar = ab->pdevs[mac_id].ar;
+
+ if (!ath12k_dp_process_rx_err_buf(ar, reo_desc, drop,
+ msdu_cookies[i]))
+ tot_n_bufs_reaped++;
+ }
+
+ if (tot_n_bufs_reaped >= quota) {
+ tot_n_bufs_reaped = quota;
+ goto exit;
+ }
+
+ budget = quota - tot_n_bufs_reaped;
+ }
+
+exit:
+ ath12k_hal_srng_access_end(ab, srng);
+
+ spin_unlock_bh(&srng->lock);
+
+ rx_ring = &dp->rx_refill_buf_ring;
+
+ ath12k_dp_rx_bufs_replenish(ab, 0, rx_ring, tot_n_bufs_reaped,
+ ab->hw_params->hal_params->rx_buf_rbm, true);
+
+ return tot_n_bufs_reaped;
+}
+
+static void ath12k_dp_rx_null_q_desc_sg_drop(struct ath12k *ar,
+ int msdu_len,
+ struct sk_buff_head *msdu_list)
+{
+ struct sk_buff *skb, *tmp;
+ struct ath12k_skb_rxcb *rxcb;
+ int n_buffs;
+
+ n_buffs = DIV_ROUND_UP(msdu_len,
+ (DP_RX_BUFFER_SIZE - ar->ab->hw_params->hal_desc_sz));
+
+ skb_queue_walk_safe(msdu_list, skb, tmp) {
+ rxcb = ATH12K_SKB_RXCB(skb);
+ if (rxcb->err_rel_src == HAL_WBM_REL_SRC_MODULE_REO &&
+ rxcb->err_code == HAL_REO_DEST_RING_ERROR_CODE_DESC_ADDR_ZERO) {
+ if (!n_buffs)
+ break;
+ __skb_unlink(skb, msdu_list);
+ dev_kfree_skb_any(skb);
+ n_buffs--;
+ }
+ }
+}
+
+static int ath12k_dp_rx_h_null_q_desc(struct ath12k *ar, struct sk_buff *msdu,
+ struct ieee80211_rx_status *status,
+ struct sk_buff_head *msdu_list)
+{
+ struct ath12k_base *ab = ar->ab;
+ u16 msdu_len, peer_id;
+ struct hal_rx_desc *desc = (struct hal_rx_desc *)msdu->data;
+ u8 l3pad_bytes;
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
+ u32 hal_rx_desc_sz = ar->ab->hw_params->hal_desc_sz;
+
+ msdu_len = ath12k_dp_rx_h_msdu_len(ab, desc);
+ peer_id = ath12k_dp_rx_h_peer_id(ab, desc);
+
+ if (!ath12k_peer_find_by_id(ab, peer_id)) {
+ ath12k_dbg(ab, ATH12K_DBG_DATA, "invalid peer id received in wbm err pkt%d\n",
+ peer_id);
+ return -EINVAL;
+ }
+
+ if (!rxcb->is_frag && ((msdu_len + hal_rx_desc_sz) > DP_RX_BUFFER_SIZE)) {
+ /* First buffer will be freed by the caller, so deduct it's length */
+ msdu_len = msdu_len - (DP_RX_BUFFER_SIZE - hal_rx_desc_sz);
+ ath12k_dp_rx_null_q_desc_sg_drop(ar, msdu_len, msdu_list);
+ return -EINVAL;
+ }
+
+ /* Even after cleaning up the sg buffers in the msdu list with above check
+ * any msdu received with continuation flag needs to be dropped as invalid.
+ * This protects against some random err frame with continuation flag.
+ */
+ if (rxcb->is_continuation)
+ return -EINVAL;
+
+ if (!ath12k_dp_rx_h_msdu_done(ab, desc)) {
+ ath12k_warn(ar->ab,
+ "msdu_done bit not set in null_q_des processing\n");
+ __skb_queue_purge(msdu_list);
+ return -EIO;
+ }
+
+ /* Handle NULL queue descriptor violations arising out a missing
+ * REO queue for a given peer or a given TID. This typically
+ * may happen if a packet is received on a QOS enabled TID before the
+ * ADDBA negotiation for that TID, when the TID queue is setup. Or
+ * it may also happen for MC/BC frames if they are not routed to the
+ * non-QOS TID queue, in the absence of any other default TID queue.
+ * This error can show up both in a REO destination or WBM release ring.
+ */
+
+ if (rxcb->is_frag) {
+ skb_pull(msdu, hal_rx_desc_sz);
+ } else {
+ l3pad_bytes = ath12k_dp_rx_h_l3pad(ab, desc);
+
+ if ((hal_rx_desc_sz + l3pad_bytes + msdu_len) > DP_RX_BUFFER_SIZE)
+ return -EINVAL;
+
+ skb_put(msdu, hal_rx_desc_sz + l3pad_bytes + msdu_len);
+ skb_pull(msdu, hal_rx_desc_sz + l3pad_bytes);
+ }
+ ath12k_dp_rx_h_ppdu(ar, desc, status);
+
+ ath12k_dp_rx_h_mpdu(ar, msdu, desc, status);
+
+ rxcb->tid = ath12k_dp_rx_h_tid(ab, desc);
+
+ /* Please note that caller will having the access to msdu and completing
+ * rx with mac80211. Need not worry about cleaning up amsdu_list.
+ */
+
+ return 0;
+}
+
+static bool ath12k_dp_rx_h_reo_err(struct ath12k *ar, struct sk_buff *msdu,
+ struct ieee80211_rx_status *status,
+ struct sk_buff_head *msdu_list)
+{
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
+ bool drop = false;
+
+ ar->ab->soc_stats.reo_error[rxcb->err_code]++;
+
+ switch (rxcb->err_code) {
+ case HAL_REO_DEST_RING_ERROR_CODE_DESC_ADDR_ZERO:
+ if (ath12k_dp_rx_h_null_q_desc(ar, msdu, status, msdu_list))
+ drop = true;
+ break;
+ case HAL_REO_DEST_RING_ERROR_CODE_PN_CHECK_FAILED:
+ /* TODO: Do not drop PN failed packets in the driver;
+ * instead, it is good to drop such packets in mac80211
+ * after incrementing the replay counters.
+ */
+ fallthrough;
+ default:
+ /* TODO: Review other errors and process them to mac80211
+ * as appropriate.
+ */
+ drop = true;
+ break;
+ }
+
+ return drop;
+}
+
+static void ath12k_dp_rx_h_tkip_mic_err(struct ath12k *ar, struct sk_buff *msdu,
+ struct ieee80211_rx_status *status)
+{
+ struct ath12k_base *ab = ar->ab;
+ u16 msdu_len;
+ struct hal_rx_desc *desc = (struct hal_rx_desc *)msdu->data;
+ u8 l3pad_bytes;
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
+ u32 hal_rx_desc_sz = ar->ab->hw_params->hal_desc_sz;
+
+ rxcb->is_first_msdu = ath12k_dp_rx_h_first_msdu(ab, desc);
+ rxcb->is_last_msdu = ath12k_dp_rx_h_last_msdu(ab, desc);
+
+ l3pad_bytes = ath12k_dp_rx_h_l3pad(ab, desc);
+ msdu_len = ath12k_dp_rx_h_msdu_len(ab, desc);
+ skb_put(msdu, hal_rx_desc_sz + l3pad_bytes + msdu_len);
+ skb_pull(msdu, hal_rx_desc_sz + l3pad_bytes);
+
+ ath12k_dp_rx_h_ppdu(ar, desc, status);
+
+ status->flag |= (RX_FLAG_MMIC_STRIPPED | RX_FLAG_MMIC_ERROR |
+ RX_FLAG_DECRYPTED);
+
+ ath12k_dp_rx_h_undecap(ar, msdu, desc,
+ HAL_ENCRYPT_TYPE_TKIP_MIC, status, false);
+}
+
+static bool ath12k_dp_rx_h_rxdma_err(struct ath12k *ar, struct sk_buff *msdu,
+ struct ieee80211_rx_status *status)
+{
+ struct ath12k_base *ab = ar->ab;
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
+ struct hal_rx_desc *rx_desc = (struct hal_rx_desc *)msdu->data;
+ bool drop = false;
+ u32 err_bitmap;
+
+ ar->ab->soc_stats.rxdma_error[rxcb->err_code]++;
+
+ switch (rxcb->err_code) {
+ case HAL_REO_ENTR_RING_RXDMA_ECODE_DECRYPT_ERR:
+ case HAL_REO_ENTR_RING_RXDMA_ECODE_TKIP_MIC_ERR:
+ err_bitmap = ath12k_dp_rx_h_mpdu_err(ab, rx_desc);
+ if (err_bitmap & HAL_RX_MPDU_ERR_TKIP_MIC) {
+ ath12k_dp_rx_h_tkip_mic_err(ar, msdu, status);
+ break;
+ }
+ fallthrough;
+ default:
+ /* TODO: Review other rxdma error code to check if anything is
+ * worth reporting to mac80211
+ */
+ drop = true;
+ break;
+ }
+
+ return drop;
+}
+
+static void ath12k_dp_rx_wbm_err(struct ath12k *ar,
+ struct napi_struct *napi,
+ struct sk_buff *msdu,
+ struct sk_buff_head *msdu_list)
+{
+ struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
+ struct ieee80211_rx_status rxs = {0};
+ bool drop = true;
+
+ switch (rxcb->err_rel_src) {
+ case HAL_WBM_REL_SRC_MODULE_REO:
+ drop = ath12k_dp_rx_h_reo_err(ar, msdu, &rxs, msdu_list);
+ break;
+ case HAL_WBM_REL_SRC_MODULE_RXDMA:
+ drop = ath12k_dp_rx_h_rxdma_err(ar, msdu, &rxs);
+ break;
+ default:
+ /* msdu will get freed */
+ break;
+ }
+
+ if (drop) {
+ dev_kfree_skb_any(msdu);
+ return;
+ }
+
+ ath12k_dp_rx_deliver_msdu(ar, napi, msdu, &rxs);
+}
+
+int ath12k_dp_rx_process_wbm_err(struct ath12k_base *ab,
+ struct napi_struct *napi, int budget)
+{
+ struct ath12k *ar;
+ struct ath12k_dp *dp = &ab->dp;
+ struct dp_rxdma_ring *rx_ring;
+ struct hal_rx_wbm_rel_info err_info;
+ struct hal_srng *srng;
+ struct sk_buff *msdu;
+ struct sk_buff_head msdu_list[MAX_RADIOS];
+ struct ath12k_skb_rxcb *rxcb;
+ void *rx_desc;
+ int mac_id;
+ int num_buffs_reaped = 0;
+ int total_num_buffs_reaped = 0;
+ struct ath12k_rx_desc_info *desc_info;
+ int ret, i;
+
+ for (i = 0; i < ab->num_radios; i++)
+ __skb_queue_head_init(&msdu_list[i]);
+
+ srng = &ab->hal.srng_list[dp->rx_rel_ring.ring_id];
+ rx_ring = &dp->rx_refill_buf_ring;
+
+ spin_lock_bh(&srng->lock);
+
+ ath12k_hal_srng_access_begin(ab, srng);
+
+ while (budget) {
+ rx_desc = ath12k_hal_srng_dst_get_next_entry(ab, srng);
+ if (!rx_desc)
+ break;
+
+ ret = ath12k_hal_wbm_desc_parse_err(ab, rx_desc, &err_info);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to parse rx error in wbm_rel ring desc %d\n",
+ ret);
+ continue;
+ }
+
+ desc_info = (struct ath12k_rx_desc_info *)err_info.rx_desc;
+
+ /* retry manual desc retrieval if hw cc is not done */
+ if (!desc_info) {
+ desc_info = ath12k_dp_get_rx_desc(ab, err_info.cookie);
+ if (!desc_info) {
+ ath12k_warn(ab, "Invalid cookie in manual desc retrival");
+ continue;
+ }
+ }
+
+ /* FIXME: Extract mac id correctly. Since descs are not tied
+ * to mac, we can extract from vdev id in ring desc.
+ */
+ mac_id = 0;
+
+ if (desc_info->magic != ATH12K_DP_RX_DESC_MAGIC)
+ ath12k_warn(ab, "WBM RX err, Check HW CC implementation");
+
+ msdu = desc_info->skb;
+ desc_info->skb = NULL;
+
+ spin_lock_bh(&dp->rx_desc_lock);
+ list_move_tail(&desc_info->list, &dp->rx_desc_free_list);
+ spin_unlock_bh(&dp->rx_desc_lock);
+
+ rxcb = ATH12K_SKB_RXCB(msdu);
+ dma_unmap_single(ab->dev, rxcb->paddr,
+ msdu->len + skb_tailroom(msdu),
+ DMA_FROM_DEVICE);
+
+ num_buffs_reaped++;
+ total_num_buffs_reaped++;
+
+ if (!err_info.continuation)
+ budget--;
+
+ if (err_info.push_reason !=
+ HAL_REO_DEST_RING_PUSH_REASON_ERR_DETECTED) {
+ dev_kfree_skb_any(msdu);
+ continue;
+ }
+
+ rxcb->err_rel_src = err_info.err_rel_src;
+ rxcb->err_code = err_info.err_code;
+ rxcb->rx_desc = (struct hal_rx_desc *)msdu->data;
+ __skb_queue_tail(&msdu_list[mac_id], msdu);
+
+ rxcb->is_first_msdu = err_info.first_msdu;
+ rxcb->is_last_msdu = err_info.last_msdu;
+ rxcb->is_continuation = err_info.continuation;
+ }
+
+ ath12k_hal_srng_access_end(ab, srng);
+
+ spin_unlock_bh(&srng->lock);
+
+ if (!total_num_buffs_reaped)
+ goto done;
+
+ ath12k_dp_rx_bufs_replenish(ab, 0, rx_ring, num_buffs_reaped,
+ ab->hw_params->hal_params->rx_buf_rbm, true);
+
+ rcu_read_lock();
+ for (i = 0; i < ab->num_radios; i++) {
+ if (!rcu_dereference(ab->pdevs_active[i])) {
+ __skb_queue_purge(&msdu_list[i]);
+ continue;
+ }
+
+ ar = ab->pdevs[i].ar;
+
+ if (test_bit(ATH12K_CAC_RUNNING, &ar->dev_flags)) {
+ __skb_queue_purge(&msdu_list[i]);
+ continue;
+ }
+
+ while ((msdu = __skb_dequeue(&msdu_list[i])) != NULL)
+ ath12k_dp_rx_wbm_err(ar, napi, msdu, &msdu_list[i]);
+ }
+ rcu_read_unlock();
+done:
+ return total_num_buffs_reaped;
+}
+
+void ath12k_dp_rx_process_reo_status(struct ath12k_base *ab)
+{
+ struct ath12k_dp *dp = &ab->dp;
+ struct hal_tlv_64_hdr *hdr;
+ struct hal_srng *srng;
+ struct ath12k_dp_rx_reo_cmd *cmd, *tmp;
+ bool found = false;
+ u16 tag;
+ struct hal_reo_status reo_status;
+
+ srng = &ab->hal.srng_list[dp->reo_status_ring.ring_id];
+
+ memset(&reo_status, 0, sizeof(reo_status));
+
+ spin_lock_bh(&srng->lock);
+
+ ath12k_hal_srng_access_begin(ab, srng);
+
+ while ((hdr = ath12k_hal_srng_dst_get_next_entry(ab, srng))) {
+ tag = u64_get_bits(hdr->tl, HAL_SRNG_TLV_HDR_TAG);
+
+ switch (tag) {
+ case HAL_REO_GET_QUEUE_STATS_STATUS:
+ ath12k_hal_reo_status_queue_stats(ab, hdr,
+ &reo_status);
+ break;
+ case HAL_REO_FLUSH_QUEUE_STATUS:
+ ath12k_hal_reo_flush_queue_status(ab, hdr,
+ &reo_status);
+ break;
+ case HAL_REO_FLUSH_CACHE_STATUS:
+ ath12k_hal_reo_flush_cache_status(ab, hdr,
+ &reo_status);
+ break;
+ case HAL_REO_UNBLOCK_CACHE_STATUS:
+ ath12k_hal_reo_unblk_cache_status(ab, hdr,
+ &reo_status);
+ break;
+ case HAL_REO_FLUSH_TIMEOUT_LIST_STATUS:
+ ath12k_hal_reo_flush_timeout_list_status(ab, hdr,
+ &reo_status);
+ break;
+ case HAL_REO_DESCRIPTOR_THRESHOLD_REACHED_STATUS:
+ ath12k_hal_reo_desc_thresh_reached_status(ab, hdr,
+ &reo_status);
+ break;
+ case HAL_REO_UPDATE_RX_REO_QUEUE_STATUS:
+ ath12k_hal_reo_update_rx_reo_queue_status(ab, hdr,
+ &reo_status);
+ break;
+ default:
+ ath12k_warn(ab, "Unknown reo status type %d\n", tag);
+ continue;
+ }
+
+ spin_lock_bh(&dp->reo_cmd_lock);
+ list_for_each_entry_safe(cmd, tmp, &dp->reo_cmd_list, list) {
+ if (reo_status.uniform_hdr.cmd_num == cmd->cmd_num) {
+ found = true;
+ list_del(&cmd->list);
+ break;
+ }
+ }
+ spin_unlock_bh(&dp->reo_cmd_lock);
+
+ if (found) {
+ cmd->handler(dp, (void *)&cmd->data,
+ reo_status.uniform_hdr.cmd_status);
+ kfree(cmd);
+ }
+
+ found = false;
+ }
+
+ ath12k_hal_srng_access_end(ab, srng);
+
+ spin_unlock_bh(&srng->lock);
+}
+
+void ath12k_dp_rx_free(struct ath12k_base *ab)
+{
+ struct ath12k_dp *dp = &ab->dp;
+ int i;
+
+ ath12k_dp_srng_cleanup(ab, &dp->rx_refill_buf_ring.refill_buf_ring);
+
+ for (i = 0; i < ab->hw_params->num_rxmda_per_pdev; i++) {
+ if (ab->hw_params->rx_mac_buf_ring)
+ ath12k_dp_srng_cleanup(ab, &dp->rx_mac_buf_ring[i]);
+ }
+
+ for (i = 0; i < ab->hw_params->num_rxdma_dst_ring; i++)
+ ath12k_dp_srng_cleanup(ab, &dp->rxdma_err_dst_ring[i]);
+
+ ath12k_dp_srng_cleanup(ab, &dp->rxdma_mon_buf_ring.refill_buf_ring);
+ ath12k_dp_srng_cleanup(ab, &dp->tx_mon_buf_ring.refill_buf_ring);
+
+ ath12k_dp_rxdma_buf_free(ab);
+}
+
+void ath12k_dp_rx_pdev_free(struct ath12k_base *ab, int mac_id)
+{
+ struct ath12k *ar = ab->pdevs[mac_id].ar;
+
+ ath12k_dp_rx_pdev_srng_free(ar);
+}
+
+int ath12k_dp_rxdma_ring_sel_config_qcn9274(struct ath12k_base *ab)
+{
+ struct ath12k_dp *dp = &ab->dp;
+ struct htt_rx_ring_tlv_filter tlv_filter = {0};
+ u32 ring_id;
+ int ret;
+ u32 hal_rx_desc_sz = ab->hw_params->hal_desc_sz;
+
+ ring_id = dp->rx_refill_buf_ring.refill_buf_ring.ring_id;
+
+ tlv_filter.rx_filter = HTT_RX_TLV_FLAGS_RXDMA_RING;
+ tlv_filter.pkt_filter_flags2 = HTT_RX_FP_CTRL_PKT_FILTER_TLV_FLAGS2_BAR;
+ tlv_filter.pkt_filter_flags3 = HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_MCAST |
+ HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_UCAST |
+ HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_NULL_DATA;
+ tlv_filter.offset_valid = true;
+ tlv_filter.rx_packet_offset = hal_rx_desc_sz;
+
+ tlv_filter.rx_mpdu_start_offset =
+ ab->hw_params->hal_ops->rx_desc_get_mpdu_start_offset();
+ tlv_filter.rx_msdu_end_offset =
+ ab->hw_params->hal_ops->rx_desc_get_msdu_end_offset();
+
+ /* TODO: Selectively subscribe to required qwords within msdu_end
+ * and mpdu_start and setup the mask in below msg
+ * and modify the rx_desc struct
+ */
+ ret = ath12k_dp_tx_htt_rx_filter_setup(ab, ring_id, 0,
+ HAL_RXDMA_BUF,
+ DP_RXDMA_REFILL_RING_SIZE,
+ &tlv_filter);
+
+ return ret;
+}
+
+int ath12k_dp_rxdma_ring_sel_config_wcn7850(struct ath12k_base *ab)
+{
+ struct ath12k_dp *dp = &ab->dp;
+ struct htt_rx_ring_tlv_filter tlv_filter = {0};
+ u32 ring_id;
+ int ret;
+ u32 hal_rx_desc_sz = ab->hw_params->hal_desc_sz;
+ int i;
+
+ ring_id = dp->rx_refill_buf_ring.refill_buf_ring.ring_id;
+
+ tlv_filter.rx_filter = HTT_RX_TLV_FLAGS_RXDMA_RING;
+ tlv_filter.pkt_filter_flags2 = HTT_RX_FP_CTRL_PKT_FILTER_TLV_FLAGS2_BAR;
+ tlv_filter.pkt_filter_flags3 = HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_MCAST |
+ HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_UCAST |
+ HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_NULL_DATA;
+ tlv_filter.offset_valid = true;
+ tlv_filter.rx_packet_offset = hal_rx_desc_sz;
+
+ tlv_filter.rx_header_offset = offsetof(struct hal_rx_desc_wcn7850, pkt_hdr_tlv);
+
+ tlv_filter.rx_mpdu_start_offset =
+ ab->hw_params->hal_ops->rx_desc_get_mpdu_start_offset();
+ tlv_filter.rx_msdu_end_offset =
+ ab->hw_params->hal_ops->rx_desc_get_msdu_end_offset();
+
+ /* TODO: Selectively subscribe to required qwords within msdu_end
+ * and mpdu_start and setup the mask in below msg
+ * and modify the rx_desc struct
+ */
+
+ for (i = 0; i < ab->hw_params->num_rxmda_per_pdev; i++) {
+ ring_id = dp->rx_mac_buf_ring[i].ring_id;
+ ret = ath12k_dp_tx_htt_rx_filter_setup(ab, ring_id, i,
+ HAL_RXDMA_BUF,
+ DP_RXDMA_REFILL_RING_SIZE,
+ &tlv_filter);
+ }
+
+ return ret;
+}
+
+int ath12k_dp_rx_htt_setup(struct ath12k_base *ab)
+{
+ struct ath12k_dp *dp = &ab->dp;
+ u32 ring_id;
+ int i, ret;
+
+ /* TODO: Need to verify the HTT setup for QCN9224 */
+ ring_id = dp->rx_refill_buf_ring.refill_buf_ring.ring_id;
+ ret = ath12k_dp_tx_htt_srng_setup(ab, ring_id, 0, HAL_RXDMA_BUF);
+ if (ret) {
+ ath12k_warn(ab, "failed to configure rx_refill_buf_ring %d\n",
+ ret);
+ return ret;
+ }
+
+ if (ab->hw_params->rx_mac_buf_ring) {
+ for (i = 0; i < ab->hw_params->num_rxmda_per_pdev; i++) {
+ ring_id = dp->rx_mac_buf_ring[i].ring_id;
+ ret = ath12k_dp_tx_htt_srng_setup(ab, ring_id,
+ i, HAL_RXDMA_BUF);
+ if (ret) {
+ ath12k_warn(ab, "failed to configure rx_mac_buf_ring%d %d\n",
+ i, ret);
+ return ret;
+ }
+ }
+ }
+
+ for (i = 0; i < ab->hw_params->num_rxdma_dst_ring; i++) {
+ ring_id = dp->rxdma_err_dst_ring[i].ring_id;
+ ret = ath12k_dp_tx_htt_srng_setup(ab, ring_id,
+ i, HAL_RXDMA_DST);
+ if (ret) {
+ ath12k_warn(ab, "failed to configure rxdma_err_dest_ring%d %d\n",
+ i, ret);
+ return ret;
+ }
+ }
+
+ if (ab->hw_params->rxdma1_enable) {
+ ring_id = dp->rxdma_mon_buf_ring.refill_buf_ring.ring_id;
+ ret = ath12k_dp_tx_htt_srng_setup(ab, ring_id,
+ 0, HAL_RXDMA_MONITOR_BUF);
+ if (ret) {
+ ath12k_warn(ab, "failed to configure rxdma_mon_buf_ring %d\n",
+ ret);
+ return ret;
+ }
+
+ ring_id = dp->tx_mon_buf_ring.refill_buf_ring.ring_id;
+ ret = ath12k_dp_tx_htt_srng_setup(ab, ring_id,
+ 0, HAL_TX_MONITOR_BUF);
+ if (ret) {
+ ath12k_warn(ab, "failed to configure rxdma_mon_buf_ring %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ ret = ab->hw_params->hw_ops->rxdma_ring_sel_config(ab);
+ if (ret) {
+ ath12k_warn(ab, "failed to setup rxdma ring selection config\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+int ath12k_dp_rx_alloc(struct ath12k_base *ab)
+{
+ struct ath12k_dp *dp = &ab->dp;
+ int i, ret;
+
+ idr_init(&dp->rx_refill_buf_ring.bufs_idr);
+ spin_lock_init(&dp->rx_refill_buf_ring.idr_lock);
+
+ idr_init(&dp->rxdma_mon_buf_ring.bufs_idr);
+ spin_lock_init(&dp->rxdma_mon_buf_ring.idr_lock);
+
+ idr_init(&dp->tx_mon_buf_ring.bufs_idr);
+ spin_lock_init(&dp->tx_mon_buf_ring.idr_lock);
+
+ ret = ath12k_dp_srng_setup(ab,
+ &dp->rx_refill_buf_ring.refill_buf_ring,
+ HAL_RXDMA_BUF, 0, 0,
+ DP_RXDMA_BUF_RING_SIZE);
+ if (ret) {
+ ath12k_warn(ab, "failed to setup rx_refill_buf_ring\n");
+ return ret;
+ }
+
+ if (ab->hw_params->rx_mac_buf_ring) {
+ for (i = 0; i < ab->hw_params->num_rxmda_per_pdev; i++) {
+ ret = ath12k_dp_srng_setup(ab,
+ &dp->rx_mac_buf_ring[i],
+ HAL_RXDMA_BUF, 1,
+ i, 1024);
+ if (ret) {
+ ath12k_warn(ab, "failed to setup rx_mac_buf_ring %d\n",
+ i);
+ return ret;
+ }
+ }
+ }
+
+ for (i = 0; i < ab->hw_params->num_rxdma_dst_ring; i++) {
+ ret = ath12k_dp_srng_setup(ab, &dp->rxdma_err_dst_ring[i],
+ HAL_RXDMA_DST, 0, i,
+ DP_RXDMA_ERR_DST_RING_SIZE);
+ if (ret) {
+ ath12k_warn(ab, "failed to setup rxdma_err_dst_ring %d\n", i);
+ return ret;
+ }
+ }
+
+ if (ab->hw_params->rxdma1_enable) {
+ ret = ath12k_dp_srng_setup(ab,
+ &dp->rxdma_mon_buf_ring.refill_buf_ring,
+ HAL_RXDMA_MONITOR_BUF, 0, 0,
+ DP_RXDMA_MONITOR_BUF_RING_SIZE);
+ if (ret) {
+ ath12k_warn(ab, "failed to setup HAL_RXDMA_MONITOR_BUF\n");
+ return ret;
+ }
+
+ ret = ath12k_dp_srng_setup(ab,
+ &dp->tx_mon_buf_ring.refill_buf_ring,
+ HAL_TX_MONITOR_BUF, 0, 0,
+ DP_TX_MONITOR_BUF_RING_SIZE);
+ if (ret) {
+ ath12k_warn(ab, "failed to setup DP_TX_MONITOR_BUF_RING_SIZE\n");
+ return ret;
+ }
+ }
+
+ ret = ath12k_dp_rxdma_buf_setup(ab);
+ if (ret) {
+ ath12k_warn(ab, "failed to setup rxdma ring\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+int ath12k_dp_rx_pdev_alloc(struct ath12k_base *ab, int mac_id)
+{
+ struct ath12k *ar = ab->pdevs[mac_id].ar;
+ struct ath12k_pdev_dp *dp = &ar->dp;
+ u32 ring_id;
+ int i;
+ int ret;
+
+ ret = ath12k_dp_rx_pdev_srng_alloc(ar);
+ if (ret) {
+ ath12k_warn(ab, "failed to setup rx srngs\n");
+ return ret;
+ }
+
+ if (!ab->hw_params->rxdma1_enable)
+ goto out;
+
+ for (i = 0; i < ab->hw_params->num_rxmda_per_pdev; i++) {
+ ring_id = dp->rxdma_mon_dst_ring[i].ring_id;
+ ret = ath12k_dp_tx_htt_srng_setup(ab, ring_id,
+ mac_id + i,
+ HAL_RXDMA_MONITOR_DST);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to configure rxdma_mon_dst_ring %d %d\n",
+ i, ret);
+ return ret;
+ }
+
+ ring_id = dp->tx_mon_dst_ring[i].ring_id;
+ ret = ath12k_dp_tx_htt_srng_setup(ab, ring_id,
+ mac_id + i,
+ HAL_TX_MONITOR_DST);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to configure tx_mon_dst_ring %d %d\n",
+ i, ret);
+ return ret;
+ }
+ }
+out:
+ return 0;
+}
+
+static int ath12k_dp_rx_pdev_mon_status_attach(struct ath12k *ar)
+{
+ struct ath12k_pdev_dp *dp = &ar->dp;
+ struct ath12k_mon_data *pmon = (struct ath12k_mon_data *)&dp->mon_data;
+
+ skb_queue_head_init(&pmon->rx_status_q);
+
+ pmon->mon_ppdu_status = DP_PPDU_STATUS_START;
+
+ memset(&pmon->rx_mon_stats, 0,
+ sizeof(pmon->rx_mon_stats));
+ return 0;
+}
+
+int ath12k_dp_rx_pdev_mon_attach(struct ath12k *ar)
+{
+ struct ath12k_pdev_dp *dp = &ar->dp;
+ struct ath12k_mon_data *pmon = &dp->mon_data;
+ int ret = 0;
+
+ ret = ath12k_dp_rx_pdev_mon_status_attach(ar);
+ if (ret) {
+ ath12k_warn(ar->ab, "pdev_mon_status_attach() failed");
+ return ret;
+ }
+
+ /* if rxdma1_enable is false, no need to setup
+ * rxdma_mon_desc_ring.
+ */
+ if (!ar->ab->hw_params->rxdma1_enable)
+ return 0;
+
+ pmon->mon_last_linkdesc_paddr = 0;
+ pmon->mon_last_buf_cookie = DP_RX_DESC_COOKIE_MAX + 1;
+ spin_lock_init(&pmon->mon_lock);
+
+ return 0;
+}
+
+int ath12k_dp_rx_pktlog_start(struct ath12k_base *ab)
+{
+ /* start reap timer */
+ mod_timer(&ab->mon_reap_timer,
+ jiffies + msecs_to_jiffies(ATH12K_MON_TIMER_INTERVAL));
+
+ return 0;
+}
+
+int ath12k_dp_rx_pktlog_stop(struct ath12k_base *ab, bool stop_timer)
+{
+ int ret;
+
+ if (stop_timer)
+ del_timer_sync(&ab->mon_reap_timer);
+
+ /* reap all the monitor related rings */
+ ret = ath12k_dp_purge_mon_ring(ab);
+ if (ret) {
+ ath12k_warn(ab, "failed to purge dp mon ring: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}