// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
* Copyright (c) 2018-2019 The Linux Foundation. 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 "debugfs_htt_stats.h"
#include "debugfs_sta.h"
#include "hal_desc.h"
#include "hw.h"
#include "dp_rx.h"
#include "hal_rx.h"
#include "dp_tx.h"
#include "peer.h"
#define ATH11K_DP_RX_FRAGMENT_TIMEOUT_MS (2 * HZ)
static u8 *ath11k_dp_rx_h_80211_hdr(struct hal_rx_desc *desc)
{
return desc->hdr_status;
}
static enum hal_encrypt_type ath11k_dp_rx_h_mpdu_start_enctype(struct hal_rx_desc *desc)
{
if (!(__le32_to_cpu(desc->mpdu_start.info1) &
RX_MPDU_START_INFO1_ENCRYPT_INFO_VALID))
return HAL_ENCRYPT_TYPE_OPEN;
return FIELD_GET(RX_MPDU_START_INFO2_ENC_TYPE,
__le32_to_cpu(desc->mpdu_start.info2));
}
static u8 ath11k_dp_rx_h_msdu_start_decap_type(struct hal_rx_desc *desc)
{
return FIELD_GET(RX_MSDU_START_INFO2_DECAP_FORMAT,
__le32_to_cpu(desc->msdu_start.info2));
}
static u8 ath11k_dp_rx_h_msdu_start_mesh_ctl_present(struct hal_rx_desc *desc)
{
return FIELD_GET(RX_MSDU_START_INFO2_MESH_CTRL_PRESENT,
__le32_to_cpu(desc->msdu_start.info2));
}
static bool ath11k_dp_rx_h_mpdu_start_seq_ctrl_valid(struct hal_rx_desc *desc)
{
return !!FIELD_GET(RX_MPDU_START_INFO1_MPDU_SEQ_CTRL_VALID,
__le32_to_cpu(desc->mpdu_start.info1));
}
static bool ath11k_dp_rx_h_mpdu_start_fc_valid(struct hal_rx_desc *desc)
{
return !!FIELD_GET(RX_MPDU_START_INFO1_MPDU_FCTRL_VALID,
__le32_to_cpu(desc->mpdu_start.info1));
}
static bool ath11k_dp_rx_h_mpdu_start_more_frags(struct sk_buff *skb)
{
struct ieee80211_hdr *hdr;
hdr = (struct ieee80211_hdr *)(skb->data + HAL_RX_DESC_SIZE);
return ieee80211_has_morefrags(hdr->frame_control);
}
static u16 ath11k_dp_rx_h_mpdu_start_frag_no(struct sk_buff *skb)
{
struct ieee80211_hdr *hdr;
hdr = (struct ieee80211_hdr *)(skb->data + HAL_RX_DESC_SIZE);
return le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
}
static u16 ath11k_dp_rx_h_mpdu_start_seq_no(struct hal_rx_desc *desc)
{
return FIELD_GET(RX_MPDU_START_INFO1_MPDU_SEQ_NUM,
__le32_to_cpu(desc->mpdu_start.info1));
}
static bool ath11k_dp_rx_h_attn_msdu_done(struct hal_rx_desc *desc)
{
return !!FIELD_GET(RX_ATTENTION_INFO2_MSDU_DONE,
__le32_to_cpu(desc->attention.info2));
}
static bool ath11k_dp_rx_h_attn_l4_cksum_fail(struct hal_rx_desc *desc)
{
return !!FIELD_GET(RX_ATTENTION_INFO1_TCP_UDP_CKSUM_FAIL,
__le32_to_cpu(desc->attention.info1));
}
static bool ath11k_dp_rx_h_attn_ip_cksum_fail(struct hal_rx_desc *desc)
{
return !!FIELD_GET(RX_ATTENTION_INFO1_IP_CKSUM_FAIL,
__le32_to_cpu(desc->attention.info1));
}
static bool ath11k_dp_rx_h_attn_is_decrypted(struct hal_rx_desc *desc)
{
return (FIELD_GET(RX_ATTENTION_INFO2_DCRYPT_STATUS_CODE,
__le32_to_cpu(desc->attention.info2)) ==
RX_DESC_DECRYPT_STATUS_CODE_OK);
}
static u32 ath11k_dp_rx_h_attn_mpdu_err(struct hal_rx_desc *desc)
{
u32 info = __le32_to_cpu(desc->attention.info1);
u32 errmap = 0;
if (info & RX_ATTENTION_INFO1_FCS_ERR)
errmap |= DP_RX_MPDU_ERR_FCS;
if (info & RX_ATTENTION_INFO1_DECRYPT_ERR)
errmap |= DP_RX_MPDU_ERR_DECRYPT;
if (info & RX_ATTENTION_INFO1_TKIP_MIC_ERR)
errmap |= DP_RX_MPDU_ERR_TKIP_MIC;
if (info & RX_ATTENTION_INFO1_A_MSDU_ERROR)
errmap |= DP_RX_MPDU_ERR_AMSDU_ERR;
if (info & RX_ATTENTION_INFO1_OVERFLOW_ERR)
errmap |= DP_RX_MPDU_ERR_OVERFLOW;
if (info & RX_ATTENTION_INFO1_MSDU_LEN_ERR)
errmap |= DP_RX_MPDU_ERR_MSDU_LEN;
if (info & RX_ATTENTION_INFO1_MPDU_LEN_ERR)
errmap |= DP_RX_MPDU_ERR_MPDU_LEN;
return errmap;
}
static u16 ath11k_dp_rx_h_msdu_start_msdu_len(struct hal_rx_desc *desc)
{
return FIELD_GET(RX_MSDU_START_INFO1_MSDU_LENGTH,
__le32_to_cpu(desc->msdu_start.info1));
}
static u8 ath11k_dp_rx_h_msdu_start_sgi(struct hal_rx_desc *desc)
{
return FIELD_GET(RX_MSDU_START_INFO3_SGI,
__le32_to_cpu(desc->msdu_start.info3));
}
static u8 ath11k_dp_rx_h_msdu_start_rate_mcs(struct hal_rx_desc *desc)
{
return FIELD_GET(RX_MSDU_START_INFO3_RATE_MCS,
__le32_to_cpu(desc->msdu_start.info3));
}
static u8 ath11k_dp_rx_h_msdu_start_rx_bw(struct hal_rx_desc *desc)
{
return FIELD_GET(RX_MSDU_START_INFO3_RECV_BW,
__le32_to_cpu(desc->msdu_start.info3));
}
static u32 ath11k_dp_rx_h_msdu_start_freq(struct hal_rx_desc *desc)
{
return __le32_to_cpu(desc->msdu_start.phy_meta_data);
}
static u8 ath11k_dp_rx_h_msdu_start_pkt_type(struct hal_rx_desc *desc)
{
return FIELD_GET(RX_MSDU_START_INFO3_PKT_TYPE,
__le32_to_cpu(desc->msdu_start.info3));
}
static u8 ath11k_dp_rx_h_msdu_start_nss(struct hal_rx_desc *desc)
{
u8 mimo_ss_bitmap = FIELD_GET(RX_MSDU_START_INFO3_MIMO_SS_BITMAP,
__le32_to_cpu(desc->msdu_start.info3));
return hweight8(mimo_ss_bitmap);
}
static u8 ath11k_dp_rx_h_mpdu_start_tid(struct hal_rx_desc *desc)
{
return FIELD_GET(RX_MPDU_START_INFO2_TID,
__le32_to_cpu(desc->mpdu_start.info2));
}
static u16 ath11k_dp_rx_h_mpdu_start_peer_id(struct hal_rx_desc *desc)
{
return __le16_to_cpu(desc->mpdu_start.sw_peer_id);
}
static u8 ath11k_dp_rx_h_msdu_end_l3pad(struct hal_rx_desc *desc)
{
return FIELD_GET(RX_MSDU_END_INFO2_L3_HDR_PADDING,
__le32_to_cpu(desc->msdu_end.info2));
}
static bool ath11k_dp_rx_h_msdu_end_first_msdu(struct hal_rx_desc *desc)
{
return !!FIELD_GET(RX_MSDU_END_INFO2_FIRST_MSDU,
__le32_to_cpu(desc->msdu_end.info2));
}
static bool ath11k_dp_rx_h_msdu_end_last_msdu(struct hal_rx_desc *desc)
{
return !!FIELD_GET(RX_MSDU_END_INFO2_LAST_MSDU,
__le32_to_cpu(desc->msdu_end.info2));
}
static void ath11k_dp_rx_desc_end_tlv_copy(struct hal_rx_desc *fdesc,
struct hal_rx_desc *ldesc)
{
memcpy((u8 *)&fdesc->msdu_end, (u8 *)&ldesc->msdu_end,
sizeof(struct rx_msdu_end));
memcpy((u8 *)&fdesc->attention, (u8 *)&ldesc->attention,
sizeof(struct rx_attention));
memcpy((u8 *)&fdesc->mpdu_end, (u8 *)&ldesc->mpdu_end,
sizeof(struct rx_mpdu_end));
}
static u32 ath11k_dp_rxdesc_get_mpdulen_err(struct hal_rx_desc *rx_desc)
{
struct rx_attention *rx_attn;
rx_attn = &rx_desc->attention;
return FIELD_GET(RX_ATTENTION_INFO1_MPDU_LEN_ERR,
__le32_to_cpu(rx_attn->info1));
}
static u32 ath11k_dp_rxdesc_get_decap_format(struct hal_rx_desc *rx_desc)
{
struct rx_msdu_start *rx_msdu_start;
rx_msdu_start = &rx_desc->msdu_start;
return FIELD_GET(RX_MSDU_START_INFO2_DECAP_FORMAT,
__le32_to_cpu(rx_msdu_start->info2));
}
static u8 *ath11k_dp_rxdesc_get_80211hdr(struct hal_rx_desc *rx_desc)
{
u8 *rx_pkt_hdr;
rx_pkt_hdr = &rx_desc->msdu_payload[0];
return rx_pkt_hdr;
}
static bool ath11k_dp_rxdesc_mpdu_valid(struct hal_rx_desc *rx_desc)
{
u32 tlv_tag;
tlv_tag = FIELD_GET(HAL_TLV_HDR_TAG,
__le32_to_cpu(rx_desc->mpdu_start_tag));
return tlv_tag == HAL_RX_MPDU_START;
}
static u32 ath11k_dp_rxdesc_get_ppduid(struct hal_rx_desc *rx_desc)
{
return __le16_to_cpu(rx_desc->mpdu_start.phy_ppdu_id);
}
static void ath11k_dp_service_mon_ring(struct timer_list *t)
{
struct ath11k_base *ab = from_timer(ab, t, mon_reap_timer);
int i;
for (i = 0; i < ab->hw_params.num_rxmda_per_pdev; i++)
ath11k_dp_rx_process_mon_rings(ab, i, NULL, DP_MON_SERVICE_BUDGET);
mod_timer(&ab->mon_reap_timer, jiffies +
msecs_to_jiffies(ATH11K_MON_TIMER_INTERVAL));
}
static int ath11k_dp_purge_mon_ring(struct ath11k_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 += ath11k_dp_rx_process_mon_rings(ab, i,
NULL,
DP_MON_SERVICE_BUDGET);
/* nothing more to reap */
if (reaped < DP_MON_SERVICE_BUDGET)
return 0;
} while (time_before(jiffies, timeout));
ath11k_warn(ab, "dp mon ring purge timeout");
return -ETIMEDOUT;
}
/* Returns number of Rx buffers replenished */
int ath11k_dp_rxbufs_replenish(struct ath11k_base *ab, int mac_id,
struct dp_rxdma_ring *rx_ring,
int req_entries,
enum hal_rx_buf_return_buf_manager mgr)
{
struct hal_srng *srng;
u32 *desc;
struct sk_buff *skb;
int num_free;
int num_remain;
int buf_id;
u32 cookie;
dma_addr_t paddr;
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);
ath11k_hal_srng_access_begin(ab, srng);
num_free = ath11k_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;
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_dma_unmap;
desc = ath11k_hal_srng_src_get_next_entry(ab, srng);
if (!desc)
goto fail_idr_remove;
ATH11K_SKB_RXCB(skb)->paddr = paddr;
cookie = FIELD_PREP(DP_RXDMA_BUF_COOKIE_PDEV_ID, mac_id) |
FIELD_PREP(DP_RXDMA_BUF_COOKIE_BUF_ID, buf_id);
num_remain--;
ath11k_hal_rx_buf_addr_info_set(desc, paddr, cookie, mgr);
}
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
return req_entries - num_remain;
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);
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
return req_entries - num_remain;
}
static int ath11k_dp_rxdma_buf_ring_free(struct ath11k *ar,
struct dp_rxdma_ring *rx_ring)
{
struct ath11k_pdev_dp *dp = &ar->dp;
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(ar->ab->dev, ATH11K_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);
/* if rxdma1_enable is false, mon_status_refill_ring
* isn't setup, so don't clean.
*/
if (!ar->ab->hw_params.rxdma1_enable)
return 0;
rx_ring = &dp->rx_mon_status_refill_ring[0];
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);
/* XXX: Understand where internal driver does this dma_unmap
* of rxdma_buffer.
*/
dma_unmap_single(ar->ab->dev, ATH11K_SKB_RXCB(skb)->paddr,
skb->len + skb_tailroom(skb), DMA_BIDIRECTIONAL);
dev_kfree_skb_any(skb);
}
idr_destroy(&rx_ring->bufs_idr);
spin_unlock_bh(&rx_ring->idr_lock);
return 0;
}
static int ath11k_dp_rxdma_pdev_buf_free(struct ath11k *ar)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct ath11k_base *ab = ar->ab;
struct dp_rxdma_ring *rx_ring = &dp->rx_refill_buf_ring;
int i;
ath11k_dp_rxdma_buf_ring_free(ar, rx_ring);
rx_ring = &dp->rxdma_mon_buf_ring;
ath11k_dp_rxdma_buf_ring_free(ar, rx_ring);
for (i = 0; i < ab->hw_params.num_rxmda_per_pdev; i++) {
rx_ring = &dp->rx_mon_status_refill_ring[i];
ath11k_dp_rxdma_buf_ring_free(ar, rx_ring);
}
return 0;
}
static int ath11k_dp_rxdma_ring_buf_setup(struct ath11k *ar,
struct dp_rxdma_ring *rx_ring,
u32 ringtype)
{
struct ath11k_pdev_dp *dp = &ar->dp;
int num_entries;
num_entries = rx_ring->refill_buf_ring.size /
ath11k_hal_srng_get_entrysize(ar->ab, ringtype);
rx_ring->bufs_max = num_entries;
ath11k_dp_rxbufs_replenish(ar->ab, dp->mac_id, rx_ring, num_entries,
HAL_RX_BUF_RBM_SW3_BM);
return 0;
}
static int ath11k_dp_rxdma_pdev_buf_setup(struct ath11k *ar)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct ath11k_base *ab = ar->ab;
struct dp_rxdma_ring *rx_ring = &dp->rx_refill_buf_ring;
int i;
ath11k_dp_rxdma_ring_buf_setup(ar, rx_ring, HAL_RXDMA_BUF);
if (ar->ab->hw_params.rxdma1_enable) {
rx_ring = &dp->rxdma_mon_buf_ring;
ath11k_dp_rxdma_ring_buf_setup(ar, rx_ring, HAL_RXDMA_MONITOR_BUF);
}
for (i = 0; i < ab->hw_params.num_rxmda_per_pdev; i++) {
rx_ring = &dp->rx_mon_status_refill_ring[i];
ath11k_dp_rxdma_ring_buf_setup(ar, rx_ring, HAL_RXDMA_MONITOR_STATUS);
}
return 0;
}
static void ath11k_dp_rx_pdev_srng_free(struct ath11k *ar)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct ath11k_base *ab = ar->ab;
int i;
ath11k_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)
ath11k_dp_srng_cleanup(ab, &dp->rx_mac_buf_ring[i]);
ath11k_dp_srng_cleanup(ab, &dp->rxdma_err_dst_ring[i]);
ath11k_dp_srng_cleanup(ab,
&dp->rx_mon_status_refill_ring[i].refill_buf_ring);
}
ath11k_dp_srng_cleanup(ab, &dp->rxdma_mon_buf_ring.refill_buf_ring);
}
void ath11k_dp_pdev_reo_cleanup(struct ath11k_base *ab)
{
struct ath11k_dp *dp = &ab->dp;
int i;
for (i = 0; i < DP_REO_DST_RING_MAX; i++)
ath11k_dp_srng_cleanup(ab, &dp->reo_dst_ring[i]);
}
int ath11k_dp_pdev_reo_setup(struct ath11k_base *ab)
{
struct ath11k_dp *dp = &ab->dp;
int ret;
int i;
for (i = 0; i < DP_REO_DST_RING_MAX; i++) {
ret = ath11k_dp_srng_setup(ab, &dp->reo_dst_ring[i],
HAL_REO_DST, i, 0,
DP_REO_DST_RING_SIZE);
if (ret) {
ath11k_warn(ab, "failed to setup reo_dst_ring\n");
goto err_reo_cleanup;
}
}
return 0;
err_reo_cleanup:
ath11k_dp_pdev_reo_cleanup(ab);
return ret;
}
static int ath11k_dp_rx_pdev_srng_alloc(struct ath11k *ar)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct ath11k_base *ab = ar->ab;
struct dp_srng *srng = NULL;
int i;
int ret;
ret = ath11k_dp_srng_setup(ar->ab,
&dp->rx_refill_buf_ring.refill_buf_ring,
HAL_RXDMA_BUF, 0,
dp->mac_id, DP_RXDMA_BUF_RING_SIZE);
if (ret) {
ath11k_warn(ar->ab, "failed to setup rx_refill_buf_ring\n");
return ret;
}
if (ar->ab->hw_params.rx_mac_buf_ring) {
for (i = 0; i < ab->hw_params.num_rxmda_per_pdev; i++) {
ret = ath11k_dp_srng_setup(ar->ab,
&dp->rx_mac_buf_ring[i],
HAL_RXDMA_BUF, 1,
dp->mac_id + i, 1024);
if (ret) {
ath11k_warn(ar->ab, "failed to setup rx_mac_buf_ring %d\n",
i);
return ret;
}
}
}
for (i = 0; i < ab->hw_params.num_rxmda_per_pdev; i++) {
ret = ath11k_dp_srng_setup(ar->ab, &dp->rxdma_err_dst_ring[i],
HAL_RXDMA_DST, 0, dp->mac_id + i,
DP_RXDMA_ERR_DST_RING_SIZE);
if (ret) {
ath11k_warn(ar->ab, "failed to setup rxdma_err_dst_ring %d\n", i);
return ret;
}
}
for (i = 0; i < ab->hw_params.num_rxmda_per_pdev; i++) {
srng = &dp->rx_mon_status_refill_ring[i].refill_buf_ring;
ret = ath11k_dp_srng_setup(ar->ab,
srng,
HAL_RXDMA_MONITOR_STATUS, 0, dp->mac_id + i,
DP_RXDMA_MON_STATUS_RING_SIZE);
if (ret) {
ath11k_warn(ar->ab,
"failed to setup rx_mon_status_refill_ring %d\n", i);
return ret;
}
}
/* if rxdma1_enable is false, then it doesn't need
* to setup rxdam_mon_buf_ring, rxdma_mon_dst_ring
* and rxdma_mon_desc_ring.
* init reap timer for QCA6390.
*/
if (!ar->ab->hw_params.rxdma1_enable) {
//init mon status buffer reap timer
timer_setup(&ar->ab->mon_reap_timer,
ath11k_dp_service_mon_ring, 0);
return 0;
}
ret = ath11k_dp_srng_setup(ar->ab,
&dp->rxdma_mon_buf_ring.refill_buf_ring,
HAL_RXDMA_MONITOR_BUF, 0, dp->mac_id,
DP_RXDMA_MONITOR_BUF_RING_SIZE);
if (ret) {
ath11k_warn(ar->ab,
"failed to setup HAL_RXDMA_MONITOR_BUF\n");
return ret;
}
ret = ath11k_dp_srng_setup(ar->ab, &dp->rxdma_mon_dst_ring,
HAL_RXDMA_MONITOR_DST, 0, dp->mac_id,
DP_RXDMA_MONITOR_DST_RING_SIZE);
if (ret) {
ath11k_warn(ar->ab,
"failed to setup HAL_RXDMA_MONITOR_DST\n");
return ret;
}
ret = ath11k_dp_srng_setup(ar->ab, &dp->rxdma_mon_desc_ring,
HAL_RXDMA_MONITOR_DESC, 0, dp->mac_id,
DP_RXDMA_MONITOR_DESC_RING_SIZE);
if (ret) {
ath11k_warn(ar->ab,
"failed to setup HAL_RXDMA_MONITOR_DESC\n");
return ret;
}
return 0;
}
void ath11k_dp_reo_cmd_list_cleanup(struct ath11k_base *ab)
{
struct ath11k_dp *dp = &ab->dp;
struct dp_reo_cmd *cmd, *tmp;
struct dp_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 ath11k_dp_reo_cmd_free(struct ath11k_dp *dp, void *ctx,
enum hal_reo_cmd_status status)
{
struct dp_rx_tid *rx_tid = ctx;
if (status != HAL_REO_CMD_SUCCESS)
ath11k_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 void ath11k_dp_reo_cache_flush(struct ath11k_base *ab,
struct dp_rx_tid *rx_tid)
{
struct ath11k_hal_reo_cmd cmd = {0};
unsigned long tot_desc_sz, desc_sz;
int ret;
tot_desc_sz = rx_tid->size;
desc_sz = ath11k_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 = ath11k_dp_tx_send_reo_cmd(ab, rx_tid,
HAL_REO_CMD_FLUSH_CACHE, &cmd,
NULL);
if (ret)
ath11k_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 = ath11k_dp_tx_send_reo_cmd(ab, rx_tid,
HAL_REO_CMD_FLUSH_CACHE,
&cmd, ath11k_dp_reo_cmd_free);
if (ret) {
ath11k_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 ath11k_dp_rx_tid_del_func(struct ath11k_dp *dp, void *ctx,
enum hal_reo_cmd_status status)
{
struct ath11k_base *ab = dp->ab;
struct dp_rx_tid *rx_tid = ctx;
struct dp_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? */
ath11k_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 > DP_REO_DESC_FREE_THRESHOLD ||
time_after(jiffies, elem->ts +
msecs_to_jiffies(DP_REO_DESC_FREE_TIMEOUT_MS))) {
list_del(&elem->list);
dp->reo_cmd_cache_flush_count--;
spin_unlock_bh(&dp->reo_cmd_lock);
ath11k_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);
}
void ath11k_peer_rx_tid_delete(struct ath11k *ar,
struct ath11k_peer *peer, u8 tid)
{
struct ath11k_hal_reo_cmd cmd = {0};
struct 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 = ath11k_dp_tx_send_reo_cmd(ar->ab, rx_tid,
HAL_REO_CMD_UPDATE_RX_QUEUE, &cmd,
ath11k_dp_rx_tid_del_func);
if (ret) {
ath11k_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);
}
rx_tid->active = false;
}
static int ath11k_dp_rx_link_desc_return(struct ath11k_base *ab,
u32 *link_desc,
enum hal_wbm_rel_bm_act action)
{
struct ath11k_dp *dp = &ab->dp;
struct hal_srng *srng;
u32 *desc;
int ret = 0;
srng = &ab->hal.srng_list[dp->wbm_desc_rel_ring.ring_id];
spin_lock_bh(&srng->lock);
ath11k_hal_srng_access_begin(ab, srng);
desc = ath11k_hal_srng_src_get_next_entry(ab, srng);
if (!desc) {
ret = -ENOBUFS;
goto exit;
}
ath11k_hal_rx_msdu_link_desc_set(ab, (void *)desc, (void *)link_desc,
action);
exit:
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
return ret;
}
static void ath11k_dp_rx_frags_cleanup(struct dp_rx_tid *rx_tid, bool rel_link_desc)
{
struct ath11k_base *ab = rx_tid->ab;
lockdep_assert_held(&ab->base_lock);
if (rx_tid->dst_ring_desc) {
if (rel_link_desc)
ath11k_dp_rx_link_desc_return(ab, (u32 *)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 ath11k_peer_rx_tid_cleanup(struct ath11k *ar, struct ath11k_peer *peer)
{
struct 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];
ath11k_peer_rx_tid_delete(ar, peer, i);
ath11k_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 ath11k_peer_rx_tid_reo_update(struct ath11k *ar,
struct ath11k_peer *peer,
struct dp_rx_tid *rx_tid,
u32 ba_win_sz, u16 ssn,
bool update_ssn)
{
struct ath11k_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 = FIELD_PREP(HAL_REO_CMD_UPD2_SSN, ssn);
}
ret = ath11k_dp_tx_send_reo_cmd(ar->ab, rx_tid,
HAL_REO_CMD_UPDATE_RX_QUEUE, &cmd,
NULL);
if (ret) {
ath11k_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;
}
static void ath11k_dp_rx_tid_mem_free(struct ath11k_base *ab,
const u8 *peer_mac, int vdev_id, u8 tid)
{
struct ath11k_peer *peer;
struct dp_rx_tid *rx_tid;
spin_lock_bh(&ab->base_lock);
peer = ath11k_peer_find(ab, vdev_id, peer_mac);
if (!peer) {
ath11k_warn(ab, "failed to find the peer to free up rx tid mem\n");
goto unlock_exit;
}
rx_tid = &peer->rx_tid[tid];
if (!rx_tid->active)
goto unlock_exit;
dma_unmap_single(ab->dev, rx_tid->paddr, rx_tid->size,
DMA_BIDIRECTIONAL);
kfree(rx_tid->vaddr);
rx_tid->active = false;
unlock_exit:
spin_unlock_bh(&ab->base_lock);
}
int ath11k_peer_rx_tid_setup(struct ath11k *ar, const u8 *peer_mac, int vdev_id,
u8 tid, u32 ba_win_sz, u16 ssn,
enum hal_pn_type pn_type)
{
struct ath11k_base *ab = ar->ab;
struct ath11k_peer *peer;
struct dp_rx_tid *rx_tid;
u32 hw_desc_sz;
u32 *addr_aligned;
void *vaddr;
dma_addr_t paddr;
int ret;
spin_lock_bh(&ab->base_lock);
peer = ath11k_peer_find(ab, vdev_id, peer_mac);
if (!peer) {
ath11k_warn(ab, "failed to find the peer to set up rx tid\n");
spin_unlock_bh(&ab->base_lock);
return -ENOENT;
}
rx_tid = &peer->rx_tid[tid];
/* Update the tid queue if it is already setup */
if (rx_tid->active) {
paddr = rx_tid->paddr;
ret = ath11k_peer_rx_tid_reo_update(ar, peer, rx_tid,
ba_win_sz, ssn, true);
spin_unlock_bh(&ab->base_lock);
if (ret) {
ath11k_warn(ab, "failed to update reo for rx tid %d\n", tid);
return ret;
}
ret = ath11k_wmi_peer_rx_reorder_queue_setup(ar, vdev_id,
peer_mac, paddr,
tid, 1, ba_win_sz);
if (ret)
ath11k_warn(ab, "failed to send wmi command to update rx reorder queue, tid :%d (%d)\n",
tid, 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 = ath11k_hal_reo_qdesc_size(ba_win_sz, tid);
else
hw_desc_sz = ath11k_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);
ath11k_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;
spin_unlock_bh(&ab->base_lock);
ret = ath11k_wmi_peer_rx_reorder_queue_setup(ar, vdev_id, peer_mac,
paddr, tid, 1, ba_win_sz);
if (ret) {
ath11k_warn(ar->ab, "failed to setup rx reorder queue, tid :%d (%d)\n",
tid, ret);
ath11k_dp_rx_tid_mem_free(ab, peer_mac, vdev_id, tid);
}
return ret;
err_mem_free:
kfree(vaddr);
return ret;
}
int ath11k_dp_rx_ampdu_start(struct ath11k *ar,
struct ieee80211_ampdu_params *params)
{
struct ath11k_base *ab = ar->ab;
struct ath11k_sta *arsta = (void *)params->sta->drv_priv;
int vdev_id = arsta->arvif->vdev_id;
int ret;
ret = ath11k_peer_rx_tid_setup(ar, params->sta->addr, vdev_id,
params->tid, params->buf_size,
params->ssn, arsta->pn_type);
if (ret)
ath11k_warn(ab, "failed to setup rx tid %d\n", ret);
return ret;
}
int ath11k_dp_rx_ampdu_stop(struct ath11k *ar,
struct ieee80211_ampdu_params *params)
{
struct ath11k_base *ab = ar->ab;
struct ath11k_peer *peer;
struct ath11k_sta *arsta = (void *)params->sta->drv_priv;
int vdev_id = arsta->arvif->vdev_id;
dma_addr_t paddr;
bool active;
int ret;
spin_lock_bh(&ab->base_lock);
peer = ath11k_peer_find(ab, vdev_id, params->sta->addr);
if (!peer) {
ath11k_warn(ab, "failed to find the peer to stop rx aggregation\n");
spin_unlock_bh(&ab->base_lock);
return -ENOENT;
}
paddr = peer->rx_tid[params->tid].paddr;
active = peer->rx_tid[params->tid].active;
if (!active) {
spin_unlock_bh(&ab->base_lock);
return 0;
}
ret = ath11k_peer_rx_tid_reo_update(ar, peer, peer->rx_tid, 1, 0, false);
spin_unlock_bh(&ab->base_lock);
if (ret) {
ath11k_warn(ab, "failed to update reo for rx tid %d: %d\n",
params->tid, ret);
return ret;
}
ret = ath11k_wmi_peer_rx_reorder_queue_setup(ar, vdev_id,
params->sta->addr, paddr,
params->tid, 1, 1);
if (ret)
ath11k_warn(ab, "failed to send wmi to delete rx tid %d\n",
ret);
return ret;
}
int ath11k_dp_peer_rx_pn_replay_config(struct ath11k_vif *arvif,
const u8 *peer_addr,
enum set_key_cmd key_cmd,
struct ieee80211_key_conf *key)
{
struct ath11k *ar = arvif->ar;
struct ath11k_base *ab = ar->ab;
struct ath11k_hal_reo_cmd cmd = {0};
struct ath11k_peer *peer;
struct 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 = ath11k_peer_find(ab, arvif->vdev_id, peer_addr);
if (!peer) {
ath11k_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 = ath11k_dp_tx_send_reo_cmd(ab, rx_tid,
HAL_REO_CMD_UPDATE_RX_QUEUE,
&cmd, NULL);
if (ret) {
ath11k_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 inline int ath11k_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 ath11k_htt_tlv_ppdu_stats_parse(struct ath11k_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)) {
ath11k_warn(ab, "Invalid len %d for the tag 0x%x\n",
len, tag);
return -EINVAL;
}
memcpy((void *)&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)) {
ath11k_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 = ath11k_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((void *)&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)) {
ath11k_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 = ath11k_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((void *)&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)) {
ath11k_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 = ath11k_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((void *)&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 ath11k_dp_htt_tlv_iter(struct ath11k_base *ab, const void *ptr, size_t len,
int (*iter)(struct ath11k_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)) {
ath11k_err(ab, "htt tlv parse failure at byte %zd (%zu bytes left, %zu expected)\n",
ptr - begin, len, sizeof(*tlv));
return -EINVAL;
}
tlv = (struct htt_tlv *)ptr;
tlv_tag = FIELD_GET(HTT_TLV_TAG, tlv->header);
tlv_len = FIELD_GET(HTT_TLV_LEN, tlv->header);
ptr += sizeof(*tlv);
len -= sizeof(*tlv);
if (tlv_len > len) {
ath11k_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 inline u32 ath11k_he_gi_to_nl80211_he_gi(u8 sgi)
{
u32 ret = 0;
switch (sgi) {
case RX_MSDU_START_SGI_0_8_US:
ret = NL80211_RATE_INFO_HE_GI_0_8;
break;
case RX_MSDU_START_SGI_1_6_US:
ret = NL80211_RATE_INFO_HE_GI_1_6;
break;
case RX_MSDU_START_SGI_3_2_US:
ret = NL80211_RATE_INFO_HE_GI_3_2;
break;
}
return ret;
}
static void
ath11k_update_per_peer_tx_stats(struct ath11k *ar,
struct htt_ppdu_stats *ppdu_stats, u8 user)
{
struct ath11k_base *ab = ar->ab;
struct ath11k_peer *peer;
struct ieee80211_sta *sta;
struct ath11k_sta *arsta;
struct htt_ppdu_stats_user_rate *user_rate;
struct ath11k_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 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 = FIELD_GET(HTT_PPDU_STATS_ACK_BA_INFO_NUM_MSDU_M,
usr_stats->ack_ba.info);
tid = FIELD_GET(HTT_PPDU_STATS_ACK_BA_INFO_TID_NUM,
usr_stats->ack_ba.info);
}
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) {
ath11k_warn(ab, "Invalid HE mcs %d peer stats", mcs);
return;
}
if (flags == WMI_RATE_PREAMBLE_HE && mcs > ATH11K_HE_MCS_MAX) {
ath11k_warn(ab, "Invalid HE mcs %d peer stats", mcs);
return;
}
if (flags == WMI_RATE_PREAMBLE_VHT && mcs > ATH11K_VHT_MCS_MAX) {
ath11k_warn(ab, "Invalid VHT mcs %d peer stats", mcs);
return;
}
if (flags == WMI_RATE_PREAMBLE_HT && (mcs > ATH11K_HT_MCS_MAX || nss < 1)) {
ath11k_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 = ath11k_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 = ath11k_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 ath11k_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 = ath11k_he_gi_to_nl80211_he_gi(sgi);
arsta->txrate.he_ru_alloc = ath11k_he_ru_tones_to_nl80211_he_ru_alloc(
(user_rate->ru_end -
user_rate->ru_start) + 1);
break;
}
arsta->txrate.nss = nss;
arsta->txrate.bw = ath11k_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);
if (ath11k_debugfs_is_extd_tx_stats_enabled(ar))
ath11k_debugfs_sta_add_tx_stats(arsta, peer_stats, rate_idx);
}
spin_unlock_bh(&ab->base_lock);
rcu_read_unlock();
}
static void ath11k_htt_update_ppdu_stats(struct ath11k *ar,
struct htt_ppdu_stats *ppdu_stats)
{
u8 user;
for (user = 0; user < HTT_PPDU_STATS_MAX_USERS - 1; user++)
ath11k_update_per_peer_tx_stats(ar, ppdu_stats, user);
}
static
struct htt_ppdu_stats_info *ath11k_dp_htt_get_ppdu_desc(struct ath11k *ar,
u32 ppdu_id)
{
struct htt_ppdu_stats_info *ppdu_info;
spin_lock_bh(&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) {
spin_unlock_bh(&ar->data_lock);
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--;
ath11k_htt_update_ppdu_stats(ar, &ppdu_info->ppdu_stats);
kfree(ppdu_info);
}
}
spin_unlock_bh(&ar->data_lock);
ppdu_info = kzalloc(sizeof(*ppdu_info), GFP_ATOMIC);
if (!ppdu_info)
return NULL;
spin_lock_bh(&ar->data_lock);
list_add_tail(&ppdu_info->list, &ar->ppdu_stats_info);
ar->ppdu_stat_list_depth++;
spin_unlock_bh(&ar->data_lock);
return ppdu_info;
}
static int ath11k_htt_pull_ppdu_stats(struct ath11k_base *ab,
struct sk_buff *skb)
{
struct ath11k_htt_ppdu_stats_msg *msg;
struct htt_ppdu_stats_info *ppdu_info;
struct ath11k *ar;
int ret;
u8 pdev_id;
u32 ppdu_id, len;
msg = (struct ath11k_htt_ppdu_stats_msg *)skb->data;
len = FIELD_GET(HTT_T2H_PPDU_STATS_INFO_PAYLOAD_SIZE, msg->info);
pdev_id = FIELD_GET(HTT_T2H_PPDU_STATS_INFO_PDEV_ID, msg->info);
ppdu_id = msg->ppdu_id;
rcu_read_lock();
ar = ath11k_mac_get_ar_by_pdev_id(ab, pdev_id);
if (!ar) {
ret = -EINVAL;
goto exit;
}
if (ath11k_debugfs_is_pktlog_lite_mode_enabled(ar))
trace_ath11k_htt_ppdu_stats(ar, skb->data, len);
ppdu_info = ath11k_dp_htt_get_ppdu_desc(ar, ppdu_id);
if (!ppdu_info) {
ret = -EINVAL;
goto exit;
}
ppdu_info->ppdu_id = ppdu_id;
ret = ath11k_dp_htt_tlv_iter(ab, msg->data, len,
ath11k_htt_tlv_ppdu_stats_parse,
(void *)ppdu_info);
if (ret) {
ath11k_warn(ab, "Failed to parse tlv %d\n", ret);
goto exit;
}
exit:
rcu_read_unlock();
return ret;
}
static void ath11k_htt_pktlog(struct ath11k_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 ath11k *ar;
u8 pdev_id;
pdev_id = FIELD_GET(HTT_T2H_PPDU_STATS_INFO_PDEV_ID, data->hdr);
ar = ath11k_mac_get_ar_by_pdev_id(ab, pdev_id);
if (!ar) {
ath11k_warn(ab, "invalid pdev id %d on htt pktlog\n", pdev_id);
return;
}
trace_ath11k_htt_pktlog(ar, data->payload, hdr->size,
ar->ab->pktlog_defs_checksum);
}
static void ath11k_htt_backpressure_event_handler(struct ath11k_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 ath11k_bp_stats *bp_stats;
pdev_id = FIELD_GET(HTT_BACKPRESSURE_EVENT_PDEV_ID_M, *data);
ring_type = FIELD_GET(HTT_BACKPRESSURE_EVENT_RING_TYPE_M, *data);
ring_id = FIELD_GET(HTT_BACKPRESSURE_EVENT_RING_ID_M, *data);
++data;
hp = FIELD_GET(HTT_BACKPRESSURE_EVENT_HP_M, *data);
tp = FIELD_GET(HTT_BACKPRESSURE_EVENT_TP_M, *data);
++data;
backpressure_time = *data;
ath11k_dbg(ab, ATH11K_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 {
ath11k_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);
}
void ath11k_dp_htt_htc_t2h_msg_handler(struct ath11k_base *ab,
struct sk_buff *skb)
{
struct ath11k_dp *dp = &ab->dp;
struct htt_resp_msg *resp = (struct htt_resp_msg *)skb->data;
enum htt_t2h_msg_type type = FIELD_GET(HTT_T2H_MSG_TYPE, *(u32 *)resp);
u16 peer_id;
u8 vdev_id;
u8 mac_addr[ETH_ALEN];
u16 peer_mac_h16;
u16 ast_hash;
u16 hw_peer_id;
ath11k_dbg(ab, ATH11K_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 = FIELD_GET(HTT_T2H_VERSION_CONF_MAJOR,
resp->version_msg.version);
dp->htt_tgt_ver_minor = FIELD_GET(HTT_T2H_VERSION_CONF_MINOR,
resp->version_msg.version);
complete(&dp->htt_tgt_version_received);
break;
case HTT_T2H_MSG_TYPE_PEER_MAP:
vdev_id = FIELD_GET(HTT_T2H_PEER_MAP_INFO_VDEV_ID,
resp->peer_map_ev.info);
peer_id = FIELD_GET(HTT_T2H_PEER_MAP_INFO_PEER_ID,
resp->peer_map_ev.info);
peer_mac_h16 = FIELD_GET(HTT_T2H_PEER_MAP_INFO1_MAC_ADDR_H16,
resp->peer_map_ev.info1);
ath11k_dp_get_mac_addr(resp->peer_map_ev.mac_addr_l32,
peer_mac_h16, mac_addr);
ath11k_peer_map_event(ab, vdev_id, peer_id, mac_addr, 0, 0);
break;
case HTT_T2H_MSG_TYPE_PEER_MAP2:
vdev_id = FIELD_GET(HTT_T2H_PEER_MAP_INFO_VDEV_ID,
resp->peer_map_ev.info);
peer_id = FIELD_GET(HTT_T2H_PEER_MAP_INFO_PEER_ID,
resp->peer_map_ev.info);
peer_mac_h16 = FIELD_GET(HTT_T2H_PEER_MAP_INFO1_MAC_ADDR_H16,
resp->peer_map_ev.info1);
ath11k_dp_get_mac_addr(resp->peer_map_ev.mac_addr_l32,
peer_mac_h16, mac_addr);
ast_hash = FIELD_GET(HTT_T2H_PEER_MAP_INFO2_AST_HASH_VAL,
resp->peer_map_ev.info2);
hw_peer_id = FIELD_GET(HTT_T2H_PEER_MAP_INFO1_HW_PEER_ID,
resp->peer_map_ev.info1);
ath11k_peer_map_event(ab, vdev_id, peer_id, mac_addr, ast_hash,
hw_peer_id);
break;
case HTT_T2H_MSG_TYPE_PEER_UNMAP:
case HTT_T2H_MSG_TYPE_PEER_UNMAP2:
peer_id = FIELD_GET(HTT_T2H_PEER_UNMAP_INFO_PEER_ID,
resp->peer_unmap_ev.info);
ath11k_peer_unmap_event(ab, peer_id);
break;
case HTT_T2H_MSG_TYPE_PPDU_STATS_IND:
ath11k_htt_pull_ppdu_stats(ab, skb);
break;
case HTT_T2H_MSG_TYPE_EXT_STATS_CONF:
ath11k_debugfs_htt_ext_stats_handler(ab, skb);
break;
case HTT_T2H_MSG_TYPE_PKTLOG:
ath11k_htt_pktlog(ab, skb);
break;
case HTT_T2H_MSG_TYPE_BKPRESSURE_EVENT_IND:
ath11k_htt_backpressure_event_handler(ab, skb);
break;
default:
ath11k_warn(ab, "htt event %d not handled\n", type);
break;
}
dev_kfree_skb_any(skb);
}
static int ath11k_dp_rx_msdu_coalesce(struct ath11k *ar,
struct sk_buff_head *msdu_list,
struct sk_buff *first, struct sk_buff *last,
u8 l3pad_bytes, int msdu_len)
{
struct sk_buff *skb;
struct ath11k_skb_rxcb *rxcb = ATH11K_SKB_RXCB(first);
int buf_first_hdr_len, buf_first_len;
struct hal_rx_desc *ldesc;
int space_extra;
int rem_len;
int buf_len;
/* 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_SIZE + 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 = ath11k_dp_rx_h_msdu_end_first_msdu(ldesc);
rxcb->is_last_msdu = ath11k_dp_rx_h_msdu_end_last_msdu(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 attention, MSDU_END and
* MPDU_END tlvs are valid only in the last buffer. Copy those tlvs.
*/
ath11k_dp_rx_desc_end_tlv_copy(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 = ATH11K_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 = ATH11K_SKB_RXCB(skb);
if (rxcb->is_continuation)
buf_len = DP_RX_BUFFER_SIZE - HAL_RX_DESC_SIZE;
else
buf_len = rem_len;
if (buf_len > (DP_RX_BUFFER_SIZE - HAL_RX_DESC_SIZE)) {
WARN_ON_ONCE(1);
dev_kfree_skb_any(skb);
return -EINVAL;
}
skb_put(skb, buf_len + HAL_RX_DESC_SIZE);
skb_pull(skb, HAL_RX_DESC_SIZE);
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 *ath11k_dp_rx_get_msdu_last_buf(struct sk_buff_head *msdu_list,
struct sk_buff *first)
{
struct sk_buff *skb;
struct ath11k_skb_rxcb *rxcb = ATH11K_SKB_RXCB(first);
if (!rxcb->is_continuation)
return first;
skb_queue_walk(msdu_list, skb) {
rxcb = ATH11K_SKB_RXCB(skb);
if (!rxcb->is_continuation)
return skb;
}
return NULL;
}
static void ath11k_dp_rx_h_csum_offload(struct sk_buff *msdu)
{
struct ath11k_skb_rxcb *rxcb = ATH11K_SKB_RXCB(msdu);
bool ip_csum_fail, l4_csum_fail;
ip_csum_fail = ath11k_dp_rx_h_attn_ip_cksum_fail(rxcb->rx_desc);
l4_csum_fail = ath11k_dp_rx_h_attn_l4_cksum_fail(rxcb->rx_desc);
msdu->ip_summed = (ip_csum_fail || l4_csum_fail) ?
CHECKSUM_NONE : CHECKSUM_UNNECESSARY;
}
static int ath11k_dp_rx_crypto_mic_len(struct ath11k *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;
}
ath11k_warn(ar->ab, "unsupported encryption type %d for mic len\n", enctype);
return 0;
}
static int ath11k_dp_rx_crypto_param_len(struct ath11k *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;
}
ath11k_warn(ar->ab, "unsupported encryption type %d\n", enctype);
return 0;
}
static int ath11k_dp_rx_crypto_icv_len(struct ath11k *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;
}
ath11k_warn(ar->ab, "unsupported encryption type %d\n", enctype);
return 0;
}
static void ath11k_dp_rx_h_undecap_nwifi(struct ath11k *ar,
struct sk_buff *msdu,
u8 *first_hdr,
enum hal_encrypt_type enctype,
struct ieee80211_rx_status *status)
{
struct ath11k_skb_rxcb *rxcb = ATH11K_SKB_RXCB(msdu);
u8 decap_hdr[DP_MAX_NWIFI_HDR_LEN];
struct ieee80211_hdr *hdr;
size_t hdr_len;
u8 da[ETH_ALEN];
u8 sa[ETH_ALEN];
u16 qos_ctl = 0;
u8 *qos;
/* copy SA & DA and pull decapped header */
hdr = (struct ieee80211_hdr *)msdu->data;
hdr_len = ieee80211_hdrlen(hdr->frame_control);
ether_addr_copy(da, ieee80211_get_DA(hdr));
ether_addr_copy(sa, ieee80211_get_SA(hdr));
skb_pull(msdu, ieee80211_hdrlen(hdr->frame_control));
if (rxcb->is_first_msdu) {
/* original 802.11 header is valid for the first msdu
* hence we can reuse the same header
*/
hdr = (struct ieee80211_hdr *)first_hdr;
hdr_len = ieee80211_hdrlen(hdr->frame_control);
/* Each A-MSDU subframe will be reported as a separate MSDU,
* so strip the A-MSDU bit from QoS Ctl.
*/
if (ieee80211_is_data_qos(hdr->frame_control)) {
qos = ieee80211_get_qos_ctl(hdr);
qos[0] &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
}
} else {
/* Rebuild qos header if this is a middle/last msdu */
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 (ath11k_dp_rx_h_msdu_start_mesh_ctl_present(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, (uint8_t *)hdr, hdr_len);
}
if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
memcpy(skb_push(msdu,
ath11k_dp_rx_crypto_param_len(ar, enctype)),
(void *)hdr + hdr_len,
ath11k_dp_rx_crypto_param_len(ar, enctype));
}
if (!rxcb->is_first_msdu) {
memcpy(skb_push(msdu,
IEEE80211_QOS_CTL_LEN), &qos_ctl,
IEEE80211_QOS_CTL_LEN);
memcpy(skb_push(msdu, hdr_len), decap_hdr, hdr_len);
return;
}
memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
/* 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 ath11k_dp_rx_h_undecap_raw(struct ath11k *ar, struct sk_buff *msdu,
enum hal_encrypt_type enctype,
struct ieee80211_rx_status *status,
bool decrypted)
{
struct ath11k_skb_rxcb *rxcb = ATH11K_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 -
ath11k_dp_rx_crypto_mic_len(ar, enctype));
skb_trim(msdu, msdu->len -
ath11k_dp_rx_crypto_icv_len(ar, enctype));
} else {
/* MIC */
if (status->flag & RX_FLAG_MIC_STRIPPED)
skb_trim(msdu, msdu->len -
ath11k_dp_rx_crypto_mic_len(ar, enctype));
/* ICV */
if (status->flag & RX_FLAG_ICV_STRIPPED)
skb_trim(msdu, msdu->len -
ath11k_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 = ath11k_dp_rx_crypto_param_len(ar, enctype);
memmove((void *)msdu->data + crypto_len,
(void *)msdu->data, hdr_len);
skb_pull(msdu, crypto_len);
}
}
static void *ath11k_dp_rx_h_find_rfc1042(struct ath11k *ar,
struct sk_buff *msdu,
enum hal_encrypt_type enctype)
{
struct ath11k_skb_rxcb *rxcb = ATH11K_SKB_RXCB(msdu);
struct ieee80211_hdr *hdr;
size_t hdr_len, crypto_len;
void *rfc1042;
bool is_amsdu;
is_amsdu = !(rxcb->is_first_msdu && rxcb->is_last_msdu);
hdr = (struct ieee80211_hdr *)ath11k_dp_rx_h_80211_hdr(rxcb->rx_desc);
rfc1042 = hdr;
if (rxcb->is_first_msdu) {
hdr_len = ieee80211_hdrlen(hdr->frame_control);
crypto_len = ath11k_dp_rx_crypto_param_len(ar, enctype);
rfc1042 += hdr_len + crypto_len;
}
if (is_amsdu)
rfc1042 += sizeof(struct ath11k_dp_amsdu_subframe_hdr);
return rfc1042;
}
static void ath11k_dp_rx_h_undecap_eth(struct ath11k *ar,
struct sk_buff *msdu,
u8 *first_hdr,
enum hal_encrypt_type enctype,
struct ieee80211_rx_status *status)
{
struct ieee80211_hdr *hdr;
struct ethhdr *eth;
size_t hdr_len;
u8 da[ETH_ALEN];
u8 sa[ETH_ALEN];
void *rfc1042;
rfc1042 = ath11k_dp_rx_h_find_rfc1042(ar, msdu, enctype);
if (WARN_ON_ONCE(!rfc1042))
return;
/* pull decapped header and copy SA & DA */
eth = (struct ethhdr *)msdu->data;
ether_addr_copy(da, eth->h_dest);
ether_addr_copy(sa, eth->h_source);
skb_pull(msdu, sizeof(struct ethhdr));
/* push rfc1042/llc/snap */
memcpy(skb_push(msdu, sizeof(struct ath11k_dp_rfc1042_hdr)), rfc1042,
sizeof(struct ath11k_dp_rfc1042_hdr));
/* push original 802.11 header */
hdr = (struct ieee80211_hdr *)first_hdr;
hdr_len = ieee80211_hdrlen(hdr->frame_control);
if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
memcpy(skb_push(msdu,
ath11k_dp_rx_crypto_param_len(ar, enctype)),
(void *)hdr + hdr_len,
ath11k_dp_rx_crypto_param_len(ar, enctype));
}
memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
/* 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 ath11k_dp_rx_h_undecap(struct ath11k *ar, struct sk_buff *msdu,
struct hal_rx_desc *rx_desc,
enum hal_encrypt_type enctype,
struct ieee80211_rx_status *status,
bool decrypted)
{
u8 *first_hdr;
u8 decap;
first_hdr = ath11k_dp_rx_h_80211_hdr(rx_desc);
decap = ath11k_dp_rx_h_msdu_start_decap_type(rx_desc);
switch (decap) {
case DP_RX_DECAP_TYPE_NATIVE_WIFI:
ath11k_dp_rx_h_undecap_nwifi(ar, msdu, first_hdr,
enctype, status);
break;
case DP_RX_DECAP_TYPE_RAW:
ath11k_dp_rx_h_undecap_raw(ar, msdu, enctype, status,
decrypted);
break;
case DP_RX_DECAP_TYPE_ETHERNET2_DIX:
/* TODO undecap support for middle/last msdu's of amsdu */
ath11k_dp_rx_h_undecap_eth(ar, msdu, first_hdr,
enctype, status);
break;
case DP_RX_DECAP_TYPE_8023:
/* TODO: Handle undecap for these formats */
break;
}
}
static void ath11k_dp_rx_h_mpdu(struct ath11k *ar,
struct sk_buff *msdu,
struct hal_rx_desc *rx_desc,
struct ieee80211_rx_status *rx_status)
{
bool fill_crypto_hdr, mcast;
enum hal_encrypt_type enctype;
bool is_decrypted = false;
struct ieee80211_hdr *hdr;
struct ath11k_peer *peer;
u32 err_bitmap;
hdr = (struct ieee80211_hdr *)msdu->data;
/* PN for multicast packets will be checked in mac80211 */
mcast = is_multicast_ether_addr(hdr->addr1);
fill_crypto_hdr = mcast;
spin_lock_bh(&ar->ab->base_lock);
peer = ath11k_peer_find_by_addr(ar->ab, hdr->addr2);
if (peer) {
if (mcast)
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 = ath11k_dp_rx_h_attn_mpdu_err(rx_desc);
if (enctype != HAL_ENCRYPT_TYPE_OPEN && !err_bitmap)
is_decrypted = ath11k_dp_rx_h_attn_is_decrypted(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 & DP_RX_MPDU_ERR_FCS)
rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
if (err_bitmap & DP_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;
}
ath11k_dp_rx_h_csum_offload(msdu);
ath11k_dp_rx_h_undecap(ar, msdu, rx_desc,
enctype, rx_status, is_decrypted);
if (!is_decrypted || fill_crypto_hdr)
return;
hdr = (void *)msdu->data;
hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
}
static void ath11k_dp_rx_h_rate(struct ath11k *ar, struct hal_rx_desc *rx_desc,
struct ieee80211_rx_status *rx_status)
{
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 = ath11k_dp_rx_h_msdu_start_pkt_type(rx_desc);
bw = ath11k_dp_rx_h_msdu_start_rx_bw(rx_desc);
rate_mcs = ath11k_dp_rx_h_msdu_start_rate_mcs(rx_desc);
nss = ath11k_dp_rx_h_msdu_start_nss(rx_desc);
sgi = ath11k_dp_rx_h_msdu_start_sgi(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 = ath11k_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 > ATH11K_HT_MCS_MAX) {
ath11k_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 = ath11k_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 > ATH11K_VHT_MCS_MAX) {
ath11k_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 = ath11k_mac_bw_to_mac80211_bw(bw);
break;
case RX_MSDU_START_PKT_TYPE_11AX:
rx_status->rate_idx = rate_mcs;
if (rate_mcs > ATH11K_HE_MCS_MAX) {
ath11k_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 = ath11k_he_gi_to_nl80211_he_gi(sgi);
rx_status->bw = ath11k_mac_bw_to_mac80211_bw(bw);
break;
}
}
static void ath11k_dp_rx_h_ppdu(struct ath11k *ar, struct hal_rx_desc *rx_desc,
struct ieee80211_rx_status *rx_status)
{
u8 channel_num;
u32 center_freq;
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;
channel_num = ath11k_dp_rx_h_msdu_start_freq(rx_desc);
center_freq = ath11k_dp_rx_h_msdu_start_freq(rx_desc) >> 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);
ath11k_dbg_dump(ar->ab, ATH11K_DBG_DATA, NULL, "rx_desc: ",
rx_desc, sizeof(struct hal_rx_desc));
}
rx_status->freq = ieee80211_channel_to_frequency(channel_num,
rx_status->band);
ath11k_dp_rx_h_rate(ar, rx_desc, rx_status);
}
static char *ath11k_print_get_tid(struct ieee80211_hdr *hdr, char *out,
size_t size)
{
u8 *qc;
int tid;
if (!ieee80211_is_data_qos(hdr->frame_control))
return "";
qc = ieee80211_get_qos_ctl(hdr);
tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
snprintf(out, size, "tid %d", tid);
return out;
}
static void ath11k_dp_rx_deliver_msdu(struct ath11k *ar, struct napi_struct *napi,
struct sk_buff *msdu)
{
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_rx_status *status;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data;
struct ieee80211_radiotap_he *he = NULL;
char tid[32];
status = IEEE80211_SKB_RXCB(msdu);
if (status->encoding == RX_ENC_HE) {
he = skb_push(msdu, sizeof(known));
memcpy(he, &known, sizeof(known));
status->flag |= RX_FLAG_RADIOTAP_HE;
}
ath11k_dbg(ar->ab, ATH11K_DBG_DATA,
"rx skb %pK len %u peer %pM %s %s sn %u %s%s%s%s%s%s%s %srate_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,
ieee80211_get_SA(hdr),
ath11k_print_get_tid(hdr, tid, sizeof(tid)),
is_multicast_ether_addr(ieee80211_get_DA(hdr)) ?
"mcast" : "ucast",
(__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4,
(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));
ath11k_dbg_dump(ar->ab, ATH11K_DBG_DP_RX, NULL, "dp rx msdu: ",
msdu->data, msdu->len);
/* TODO: trace rx packet */
ieee80211_rx_napi(ar->hw, NULL, msdu, napi);
}
static int ath11k_dp_rx_process_msdu(struct ath11k *ar,
struct sk_buff *msdu,
struct sk_buff_head *msdu_list)
{
struct hal_rx_desc *rx_desc, *lrx_desc;
struct ieee80211_rx_status rx_status = {0};
struct ieee80211_rx_status *status;
struct ath11k_skb_rxcb *rxcb;
struct ieee80211_hdr *hdr;
struct sk_buff *last_buf;
u8 l3_pad_bytes;
u8 *hdr_status;
u16 msdu_len;
int ret;
last_buf = ath11k_dp_rx_get_msdu_last_buf(msdu_list, msdu);
if (!last_buf) {
ath11k_warn(ar->ab,
"No valid Rx buffer to access Atten/MSDU_END/MPDU_END tlvs\n");
ret = -EIO;
goto free_out;
}
rx_desc = (struct hal_rx_desc *)msdu->data;
lrx_desc = (struct hal_rx_desc *)last_buf->data;
if (!ath11k_dp_rx_h_attn_msdu_done(lrx_desc)) {
ath11k_warn(ar->ab, "msdu_done bit in attention is not set\n");
ret = -EIO;
goto free_out;
}
rxcb = ATH11K_SKB_RXCB(msdu);
rxcb->rx_desc = rx_desc;
msdu_len = ath11k_dp_rx_h_msdu_start_msdu_len(rx_desc);
l3_pad_bytes = ath11k_dp_rx_h_msdu_end_l3pad(lrx_desc);
if (rxcb->is_frag) {
skb_pull(msdu, HAL_RX_DESC_SIZE);
} else if (!rxcb->is_continuation) {
if ((msdu_len + HAL_RX_DESC_SIZE) > DP_RX_BUFFER_SIZE) {
hdr_status = ath11k_dp_rx_h_80211_hdr(rx_desc);
ret = -EINVAL;
ath11k_warn(ar->ab, "invalid msdu len %u\n", msdu_len);
ath11k_dbg_dump(ar->ab, ATH11K_DBG_DATA, NULL, "", hdr_status,
sizeof(struct ieee80211_hdr));
ath11k_dbg_dump(ar->ab, ATH11K_DBG_DATA, NULL, "", rx_desc,
sizeof(struct hal_rx_desc));
goto free_out;
}
skb_put(msdu, HAL_RX_DESC_SIZE + l3_pad_bytes + msdu_len);
skb_pull(msdu, HAL_RX_DESC_SIZE + l3_pad_bytes);
} else {
ret = ath11k_dp_rx_msdu_coalesce(ar, msdu_list,
msdu, last_buf,
l3_pad_bytes, msdu_len);
if (ret) {
ath11k_warn(ar->ab,
"failed to coalesce msdu rx buffer%d\n", ret);
goto free_out;
}
}
hdr = (struct ieee80211_hdr *)msdu->data;
/* Process only data frames */
if (!ieee80211_is_data(hdr->frame_control))
return -EINVAL;
ath11k_dp_rx_h_ppdu(ar, rx_desc, &rx_status);
ath11k_dp_rx_h_mpdu(ar, msdu, rx_desc, &rx_status);
rx_status.flag |= RX_FLAG_SKIP_MONITOR | RX_FLAG_DUP_VALIDATED;
status = IEEE80211_SKB_RXCB(msdu);
*status = rx_status;
return 0;
free_out:
return ret;
}
static void ath11k_dp_rx_process_received_packets(struct ath11k_base *ab,
struct napi_struct *napi,
struct sk_buff_head *msdu_list,
int *quota, int ring_id)
{
struct ath11k_skb_rxcb *rxcb;
struct sk_buff *msdu;
struct ath11k *ar;
u8 mac_id;
int ret;
if (skb_queue_empty(msdu_list))
return;
rcu_read_lock();
while (*quota && (msdu = __skb_dequeue(msdu_list))) {
rxcb = ATH11K_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(ATH11K_CAC_RUNNING, &ar->dev_flags)) {
dev_kfree_skb_any(msdu);
continue;
}
ret = ath11k_dp_rx_process_msdu(ar, msdu, msdu_list);
if (ret) {
ath11k_dbg(ab, ATH11K_DBG_DATA,
"Unable to process msdu %d", ret);
dev_kfree_skb_any(msdu);
continue;
}
ath11k_dp_rx_deliver_msdu(ar, napi, msdu);
(*quota)--;
}
rcu_read_unlock();
}
int ath11k_dp_process_rx(struct ath11k_base *ab, int ring_id,
struct napi_struct *napi, int budget)
{
struct ath11k_dp *dp = &ab->dp;
struct dp_rxdma_ring *rx_ring;
int num_buffs_reaped[MAX_RADIOS] = {0};
struct sk_buff_head msdu_list;
struct ath11k_skb_rxcb *rxcb;
int total_msdu_reaped = 0;
struct hal_srng *srng;
struct sk_buff *msdu;
int quota = budget;
bool done = false;
int buf_id, mac_id;
struct ath11k *ar;
u32 *rx_desc;
int i;
__skb_queue_head_init(&msdu_list);
srng = &ab->hal.srng_list[dp->reo_dst_ring[ring_id].ring_id];
spin_lock_bh(&srng->lock);
ath11k_hal_srng_access_begin(ab, srng);
try_again:
while ((rx_desc = ath11k_hal_srng_dst_get_next_entry(ab, srng))) {
struct hal_reo_dest_ring desc = *(struct hal_reo_dest_ring *)rx_desc;
enum hal_reo_dest_ring_push_reason push_reason;
u32 cookie;
cookie = FIELD_GET(BUFFER_ADDR_INFO1_SW_COOKIE,
desc.buf_addr_info.info1);
buf_id = FIELD_GET(DP_RXDMA_BUF_COOKIE_BUF_ID,
cookie);
mac_id = FIELD_GET(DP_RXDMA_BUF_COOKIE_PDEV_ID, cookie);
ar = ab->pdevs[mac_id].ar;
rx_ring = &ar->dp.rx_refill_buf_ring;
spin_lock_bh(&rx_ring->idr_lock);
msdu = idr_find(&rx_ring->bufs_idr, buf_id);
if (!msdu) {
ath11k_warn(ab, "frame rx with invalid buf_id %d\n",
buf_id);
spin_unlock_bh(&rx_ring->idr_lock);
continue;
}
idr_remove(&rx_ring->bufs_idr, buf_id);
spin_unlock_bh(&rx_ring->idr_lock);
rxcb = ATH11K_SKB_RXCB(msdu);
dma_unmap_single(ab->dev, rxcb->paddr,
msdu->len + skb_tailroom(msdu),
DMA_FROM_DEVICE);
num_buffs_reaped[mac_id]++;
total_msdu_reaped++;
push_reason = FIELD_GET(HAL_REO_DEST_RING_INFO0_PUSH_REASON,
desc.info0);
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 = !!(desc.rx_msdu_info.info0 &
RX_MSDU_DESC_INFO0_FIRST_MSDU_IN_MPDU);
rxcb->is_last_msdu = !!(desc.rx_msdu_info.info0 &
RX_MSDU_DESC_INFO0_LAST_MSDU_IN_MPDU);
rxcb->is_continuation = !!(desc.rx_msdu_info.info0 &
RX_MSDU_DESC_INFO0_MSDU_CONTINUATION);
rxcb->mac_id = mac_id;
rxcb->tid = FIELD_GET(HAL_REO_DEST_RING_INFO0_RX_QUEUE_NUM,
desc.info0);
__skb_queue_tail(&msdu_list, msdu);
if (total_msdu_reaped >= quota && !rxcb->is_continuation) {
done = true;
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 && ath11k_hal_srng_dst_num_free(ab, srng, true)) {
ath11k_hal_srng_access_end(ab, srng);
goto try_again;
}
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
if (!total_msdu_reaped)
goto exit;
for (i = 0; i < ab->num_radios; i++) {
if (!num_buffs_reaped[i])
continue;
ar = ab->pdevs[i].ar;
rx_ring = &ar->dp.rx_refill_buf_ring;
ath11k_dp_rxbufs_replenish(ab, i, rx_ring, num_buffs_reaped[i],
HAL_RX_BUF_RBM_SW3_BM);
}
ath11k_dp_rx_process_received_packets(ab, napi, &msdu_list,
"a, ring_id);
exit:
return budget - quota;
}
static void ath11k_dp_rx_update_peer_stats(struct ath11k_sta *arsta,
struct hal_rx_mon_ppdu_info *ppdu_info)
{
struct ath11k_rx_peer_stats *rx_stats = arsta->rx_stats;
u32 num_msdu;
if (!rx_stats)
return;
num_msdu = ppdu_info->tcp_msdu_count + ppdu_info->tcp_ack_msdu_count +
ppdu_info->udp_msdu_count + ppdu_info->other_msdu_count;
rx_stats->num_msdu += num_msdu;
rx_stats->tcp_msdu_count += ppdu_info->tcp_msdu_count +
ppdu_info->tcp_ack_msdu_count;
rx_stats->udp_msdu_count += ppdu_info->udp_msdu_count;
rx_stats->other_msdu_count += ppdu_info->other_msdu_count;
if (ppdu_info->preamble_type == HAL_RX_PREAMBLE_11A ||
ppdu_info->preamble_type == HAL_RX_PREAMBLE_11B) {
ppdu_info->nss = 1;
ppdu_info->mcs = HAL_RX_MAX_MCS;
ppdu_info->tid = IEEE80211_NUM_TIDS;
}
if (ppdu_info->nss > 0 && ppdu_info->nss <= HAL_RX_MAX_NSS)
rx_stats->nss_count[ppdu_info->nss - 1] += num_msdu;
if (ppdu_info->mcs <= HAL_RX_MAX_MCS)
rx_stats->mcs_count[ppdu_info->mcs] += num_msdu;
if (ppdu_info->gi < HAL_RX_GI_MAX)
rx_stats->gi_count[ppdu_info->gi] += num_msdu;
if (ppdu_info->bw < HAL_RX_BW_MAX)
rx_stats->bw_count[ppdu_info->bw] += num_msdu;
if (ppdu_info->ldpc < HAL_RX_SU_MU_CODING_MAX)
rx_stats->coding_count[ppdu_info->ldpc] += num_msdu;
if (ppdu_info->tid <= IEEE80211_NUM_TIDS)
rx_stats->tid_count[ppdu_info->tid] += num_msdu;
if (ppdu_info->preamble_type < HAL_RX_PREAMBLE_MAX)
rx_stats->pream_cnt[ppdu_info->preamble_type] += num_msdu;
if (ppdu_info->reception_type < HAL_RX_RECEPTION_TYPE_MAX)
rx_stats->reception_type[ppdu_info->reception_type] += num_msdu;
if (ppdu_info->is_stbc)
rx_stats->stbc_count += num_msdu;
if (ppdu_info->beamformed)
rx_stats->beamformed_count += num_msdu;
if (ppdu_info->num_mpdu_fcs_ok > 1)
rx_stats->ampdu_msdu_count += num_msdu;
else
rx_stats->non_ampdu_msdu_count += num_msdu;
rx_stats->num_mpdu_fcs_ok += ppdu_info->num_mpdu_fcs_ok;
rx_stats->num_mpdu_fcs_err += ppdu_info->num_mpdu_fcs_err;
rx_stats->dcm_count += ppdu_info->dcm;
rx_stats->ru_alloc_cnt[ppdu_info->ru_alloc] += num_msdu;
arsta->rssi_comb = ppdu_info->rssi_comb;
rx_stats->rx_duration += ppdu_info->rx_duration;
arsta->rx_duration = rx_stats->rx_duration;
}
static struct sk_buff *ath11k_dp_rx_alloc_mon_status_buf(struct ath11k_base *ab,
struct dp_rxdma_ring *rx_ring,
int *buf_id)
{
struct sk_buff *skb;
dma_addr_t paddr;
skb = dev_alloc_skb(DP_RX_BUFFER_SIZE +
DP_RX_BUFFER_ALIGN_SIZE);
if (!skb)
goto fail_alloc_skb;
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 (unlikely(dma_mapping_error(ab->dev, paddr)))
goto fail_free_skb;
spin_lock_bh(&rx_ring->idr_lock);
*buf_id = idr_alloc(&rx_ring->bufs_idr, skb, 0,
rx_ring->bufs_max, GFP_ATOMIC);
spin_unlock_bh(&rx_ring->idr_lock);
if (*buf_id < 0)
goto fail_dma_unmap;
ATH11K_SKB_RXCB(skb)->paddr = paddr;
return skb;
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);
fail_alloc_skb:
return NULL;
}
int ath11k_dp_rx_mon_status_bufs_replenish(struct ath11k_base *ab, int mac_id,
struct dp_rxdma_ring *rx_ring,
int req_entries,
enum hal_rx_buf_return_buf_manager mgr)
{
struct hal_srng *srng;
u32 *desc;
struct sk_buff *skb;
int num_free;
int num_remain;
int buf_id;
u32 cookie;
dma_addr_t paddr;
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);
ath11k_hal_srng_access_begin(ab, srng);
num_free = ath11k_hal_srng_src_num_free(ab, srng, true);
req_entries = min(num_free, req_entries);
num_remain = req_entries;
while (num_remain > 0) {
skb = ath11k_dp_rx_alloc_mon_status_buf(ab, rx_ring,
&buf_id);
if (!skb)
break;
paddr = ATH11K_SKB_RXCB(skb)->paddr;
desc = ath11k_hal_srng_src_get_next_entry(ab, srng);
if (!desc)
goto fail_desc_get;
cookie = FIELD_PREP(DP_RXDMA_BUF_COOKIE_PDEV_ID, mac_id) |
FIELD_PREP(DP_RXDMA_BUF_COOKIE_BUF_ID, buf_id);
num_remain--;
ath11k_hal_rx_buf_addr_info_set(desc, paddr, cookie, mgr);
}
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
return req_entries - num_remain;
fail_desc_get:
spin_lock_bh(&rx_ring->idr_lock);
idr_remove(&rx_ring->bufs_idr, buf_id);
spin_unlock_bh(&rx_ring->idr_lock);
dma_unmap_single(ab->dev, paddr, skb->len + skb_tailroom(skb),
DMA_FROM_DEVICE);
dev_kfree_skb_any(skb);
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
return req_entries - num_remain;
}
static int ath11k_dp_rx_reap_mon_status_ring(struct ath11k_base *ab, int mac_id,
int *budget, struct sk_buff_head *skb_list)
{
struct ath11k *ar;
struct ath11k_pdev_dp *dp;
struct dp_rxdma_ring *rx_ring;
struct hal_srng *srng;
void *rx_mon_status_desc;
struct sk_buff *skb;
struct ath11k_skb_rxcb *rxcb;
struct hal_tlv_hdr *tlv;
u32 cookie;
int buf_id, srng_id;
dma_addr_t paddr;
u8 rbm;
int num_buffs_reaped = 0;
ar = ab->pdevs[ath11k_hw_mac_id_to_pdev_id(&ab->hw_params, mac_id)].ar;
dp = &ar->dp;
srng_id = ath11k_hw_mac_id_to_srng_id(&ab->hw_params, mac_id);
rx_ring = &dp->rx_mon_status_refill_ring[srng_id];
srng = &ab->hal.srng_list[rx_ring->refill_buf_ring.ring_id];
spin_lock_bh(&srng->lock);
ath11k_hal_srng_access_begin(ab, srng);
while (*budget) {
*budget -= 1;
rx_mon_status_desc =
ath11k_hal_srng_src_peek(ab, srng);
if (!rx_mon_status_desc)
break;
ath11k_hal_rx_buf_addr_info_get(rx_mon_status_desc, &paddr,
&cookie, &rbm);
if (paddr) {
buf_id = FIELD_GET(DP_RXDMA_BUF_COOKIE_BUF_ID, cookie);
spin_lock_bh(&rx_ring->idr_lock);
skb = idr_find(&rx_ring->bufs_idr, buf_id);
if (!skb) {
ath11k_warn(ab, "rx monitor status with invalid buf_id %d\n",
buf_id);
spin_unlock_bh(&rx_ring->idr_lock);
goto move_next;
}
idr_remove(&rx_ring->bufs_idr, buf_id);
spin_unlock_bh(&rx_ring->idr_lock);
rxcb = ATH11K_SKB_RXCB(skb);
dma_unmap_single(ab->dev, rxcb->paddr,
skb->len + skb_tailroom(skb),
DMA_FROM_DEVICE);
tlv = (struct hal_tlv_hdr *)skb->data;
if (FIELD_GET(HAL_TLV_HDR_TAG, tlv->tl) !=
HAL_RX_STATUS_BUFFER_DONE) {
ath11k_warn(ab, "mon status DONE not set %lx\n",
FIELD_GET(HAL_TLV_HDR_TAG,
tlv->tl));
dev_kfree_skb_any(skb);
goto move_next;
}
__skb_queue_tail(skb_list, skb);
}
move_next:
skb = ath11k_dp_rx_alloc_mon_status_buf(ab, rx_ring,
&buf_id);
if (!skb) {
ath11k_hal_rx_buf_addr_info_set(rx_mon_status_desc, 0, 0,
HAL_RX_BUF_RBM_SW3_BM);
num_buffs_reaped++;
break;
}
rxcb = ATH11K_SKB_RXCB(skb);
cookie = FIELD_PREP(DP_RXDMA_BUF_COOKIE_PDEV_ID, mac_id) |
FIELD_PREP(DP_RXDMA_BUF_COOKIE_BUF_ID, buf_id);
ath11k_hal_rx_buf_addr_info_set(rx_mon_status_desc, rxcb->paddr,
cookie, HAL_RX_BUF_RBM_SW3_BM);
ath11k_hal_srng_src_get_next_entry(ab, srng);
num_buffs_reaped++;
}
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
return num_buffs_reaped;
}
int ath11k_dp_rx_process_mon_status(struct ath11k_base *ab, int mac_id,
struct napi_struct *napi, int budget)
{
struct ath11k *ar = ath11k_ab_to_ar(ab, mac_id);
enum hal_rx_mon_status hal_status;
struct sk_buff *skb;
struct sk_buff_head skb_list;
struct hal_rx_mon_ppdu_info ppdu_info;
struct ath11k_peer *peer;
struct ath11k_sta *arsta;
int num_buffs_reaped = 0;
__skb_queue_head_init(&skb_list);
num_buffs_reaped = ath11k_dp_rx_reap_mon_status_ring(ab, mac_id, &budget,
&skb_list);
if (!num_buffs_reaped)
goto exit;
while ((skb = __skb_dequeue(&skb_list))) {
memset(&ppdu_info, 0, sizeof(ppdu_info));
ppdu_info.peer_id = HAL_INVALID_PEERID;
if (ath11k_debugfs_is_pktlog_rx_stats_enabled(ar))
trace_ath11k_htt_rxdesc(ar, skb->data, DP_RX_BUFFER_SIZE);
hal_status = ath11k_hal_rx_parse_mon_status(ab, &ppdu_info, skb);
if (ppdu_info.peer_id == HAL_INVALID_PEERID ||
hal_status != HAL_RX_MON_STATUS_PPDU_DONE) {
dev_kfree_skb_any(skb);
continue;
}
rcu_read_lock();
spin_lock_bh(&ab->base_lock);
peer = ath11k_peer_find_by_id(ab, ppdu_info.peer_id);
if (!peer || !peer->sta) {
ath11k_dbg(ab, ATH11K_DBG_DATA,
"failed to find the peer with peer_id %d\n",
ppdu_info.peer_id);
spin_unlock_bh(&ab->base_lock);
rcu_read_unlock();
dev_kfree_skb_any(skb);
continue;
}
arsta = (struct ath11k_sta *)peer->sta->drv_priv;
ath11k_dp_rx_update_peer_stats(arsta, &ppdu_info);
if (ath11k_debugfs_is_pktlog_peer_valid(ar, peer->addr))
trace_ath11k_htt_rxdesc(ar, skb->data, DP_RX_BUFFER_SIZE);
spin_unlock_bh(&ab->base_lock);
rcu_read_unlock();
dev_kfree_skb_any(skb);
}
exit:
return num_buffs_reaped;
}
static void ath11k_dp_rx_frag_timer(struct timer_list *timer)
{
struct 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;
}
ath11k_dp_rx_frags_cleanup(rx_tid, true);
spin_unlock_bh(&rx_tid->ab->base_lock);
}
int ath11k_peer_rx_frag_setup(struct ath11k *ar, const u8 *peer_mac, int vdev_id)
{
struct ath11k_base *ab = ar->ab;
struct crypto_shash *tfm;
struct ath11k_peer *peer;
struct 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 = ath11k_peer_find(ab, vdev_id, peer_mac);
if (!peer) {
ath11k_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, ath11k_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 ath11k_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 ath11k_dp_rx_h_verify_tkip_mic(struct ath11k *ar, struct ath11k_peer *peer,
struct sk_buff *msdu)
{
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;
u8 *key, *data;
u8 key_idx;
if (ath11k_dp_rx_h_mpdu_start_enctype(rx_desc) != HAL_ENCRYPT_TYPE_TKIP_MIC)
return 0;
hdr = (struct ieee80211_hdr *)(msdu->data + HAL_RX_DESC_SIZE);
hdr_len = ieee80211_hdrlen(hdr->frame_control);
head_len = hdr_len + HAL_RX_DESC_SIZE + 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 = ath11k_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:
(ATH11K_SKB_RXCB(msdu))->is_first_msdu = true;
(ATH11K_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_SIZE);
ath11k_dp_rx_h_ppdu(ar, rx_desc, rxs);
ath11k_dp_rx_h_undecap(ar, msdu, rx_desc,
HAL_ENCRYPT_TYPE_TKIP_MIC, rxs, true);
ieee80211_rx(ar->hw, msdu);
return -EINVAL;
}
static void ath11k_dp_rx_h_undecap_frag(struct ath11k *ar, struct sk_buff *msdu,
enum hal_encrypt_type enctype, u32 flags)
{
struct ieee80211_hdr *hdr;
size_t hdr_len;
size_t crypto_len;
if (!flags)
return;
hdr = (struct ieee80211_hdr *)(msdu->data + HAL_RX_DESC_SIZE);
if (flags & RX_FLAG_MIC_STRIPPED)
skb_trim(msdu, msdu->len -
ath11k_dp_rx_crypto_mic_len(ar, enctype));
if (flags & RX_FLAG_ICV_STRIPPED)
skb_trim(msdu, msdu->len -
ath11k_dp_rx_crypto_icv_len(ar, enctype));
if (flags & RX_FLAG_IV_STRIPPED) {
hdr_len = ieee80211_hdrlen(hdr->frame_control);
crypto_len = ath11k_dp_rx_crypto_param_len(ar, enctype);
memmove((void *)msdu->data + HAL_RX_DESC_SIZE + crypto_len,
(void *)msdu->data + HAL_RX_DESC_SIZE, hdr_len);
skb_pull(msdu, crypto_len);
}
}
static int ath11k_dp_rx_h_defrag(struct ath11k *ar,
struct ath11k_peer *peer,
struct dp_rx_tid *rx_tid,
struct sk_buff **defrag_skb)
{
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;
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_SIZE);
enctype = ath11k_dp_rx_h_mpdu_start_enctype(rx_desc);
if (enctype != HAL_ENCRYPT_TYPE_OPEN)
is_decrypted = ath11k_dp_rx_h_attn_is_decrypted(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);
ath11k_dp_rx_h_undecap_frag(ar, skb, enctype, flags);
if (skb != first_frag)
skb_pull(skb, HAL_RX_DESC_SIZE +
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_SIZE);
hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_MOREFRAGS);
ATH11K_SKB_RXCB(first_frag)->is_frag = 1;
if (ath11k_dp_rx_h_verify_tkip_mic(ar, peer, first_frag))
first_frag = NULL;
*defrag_skb = first_frag;
return 0;
}
static int ath11k_dp_rx_h_defrag_reo_reinject(struct ath11k *ar, struct dp_rx_tid *rx_tid,
struct sk_buff *defrag_skb)
{
struct ath11k_base *ab = ar->ab;
struct ath11k_pdev_dp *dp = &ar->dp;
struct dp_rxdma_ring *rx_refill_ring = &dp->rx_refill_buf_ring;
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 paddr;
u32 desc_bank, msdu_info, mpdu_info;
u32 dst_idx, cookie;
u32 *msdu_len_offset;
int ret, buf_id;
link_desc_banks = ab->dp.link_desc_banks;
reo_dest_ring = rx_tid->dst_ring_desc;
ath11k_hal_rx_reo_ent_paddr_get(ab, reo_dest_ring, &paddr, &desc_bank);
msdu_link = (struct hal_rx_msdu_link *)(link_desc_banks[desc_bank].vaddr +
(paddr - link_desc_banks[desc_bank].paddr));
msdu0 = &msdu_link->msdu_link[0];
dst_idx = FIELD_GET(RX_MSDU_DESC_INFO0_REO_DEST_IND, msdu0->rx_msdu_info.info0);
memset(msdu0, 0, sizeof(*msdu0));
msdu_info = FIELD_PREP(RX_MSDU_DESC_INFO0_FIRST_MSDU_IN_MPDU, 1) |
FIELD_PREP(RX_MSDU_DESC_INFO0_LAST_MSDU_IN_MPDU, 1) |
FIELD_PREP(RX_MSDU_DESC_INFO0_MSDU_CONTINUATION, 0) |
FIELD_PREP(RX_MSDU_DESC_INFO0_MSDU_LENGTH,
defrag_skb->len - HAL_RX_DESC_SIZE) |
FIELD_PREP(RX_MSDU_DESC_INFO0_REO_DEST_IND, dst_idx) |
FIELD_PREP(RX_MSDU_DESC_INFO0_VALID_SA, 1) |
FIELD_PREP(RX_MSDU_DESC_INFO0_VALID_DA, 1);
msdu0->rx_msdu_info.info0 = msdu_info;
/* change msdu len in hal rx desc */
msdu_len_offset = (u32 *)&rx_desc->msdu_start;
*msdu_len_offset &= ~(RX_MSDU_START_INFO1_MSDU_LENGTH);
*msdu_len_offset |= defrag_skb->len - HAL_RX_DESC_SIZE;
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, paddr))
return -ENOMEM;
spin_lock_bh(&rx_refill_ring->idr_lock);
buf_id = idr_alloc(&rx_refill_ring->bufs_idr, defrag_skb, 0,
rx_refill_ring->bufs_max * 3, GFP_ATOMIC);
spin_unlock_bh(&rx_refill_ring->idr_lock);
if (buf_id < 0) {
ret = -ENOMEM;
goto err_unmap_dma;
}
ATH11K_SKB_RXCB(defrag_skb)->paddr = paddr;
cookie = FIELD_PREP(DP_RXDMA_BUF_COOKIE_PDEV_ID, dp->mac_id) |
FIELD_PREP(DP_RXDMA_BUF_COOKIE_BUF_ID, buf_id);
ath11k_hal_rx_buf_addr_info_set(msdu0, paddr, cookie, HAL_RX_BUF_RBM_SW3_BM);
/* Fill mpdu details into reo entrace ring */
srng = &ab->hal.srng_list[ab->dp.reo_reinject_ring.ring_id];
spin_lock_bh(&srng->lock);
ath11k_hal_srng_access_begin(ab, srng);
reo_ent_ring = (struct hal_reo_entrance_ring *)
ath11k_hal_srng_src_get_next_entry(ab, srng);
if (!reo_ent_ring) {
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
ret = -ENOSPC;
goto err_free_idr;
}
memset(reo_ent_ring, 0, sizeof(*reo_ent_ring));
ath11k_hal_rx_reo_ent_paddr_get(ab, reo_dest_ring, &paddr, &desc_bank);
ath11k_hal_rx_buf_addr_info_set(reo_ent_ring, paddr, desc_bank,
HAL_RX_BUF_RBM_WBM_IDLE_DESC_LIST);
mpdu_info = FIELD_PREP(RX_MPDU_DESC_INFO0_MSDU_COUNT, 1) |
FIELD_PREP(RX_MPDU_DESC_INFO0_SEQ_NUM, rx_tid->cur_sn) |
FIELD_PREP(RX_MPDU_DESC_INFO0_FRAG_FLAG, 0) |
FIELD_PREP(RX_MPDU_DESC_INFO0_VALID_SA, 1) |
FIELD_PREP(RX_MPDU_DESC_INFO0_VALID_DA, 1) |
FIELD_PREP(RX_MPDU_DESC_INFO0_RAW_MPDU, 1) |
FIELD_PREP(RX_MPDU_DESC_INFO0_VALID_PN, 1);
reo_ent_ring->rx_mpdu_info.info0 = mpdu_info;
reo_ent_ring->rx_mpdu_info.meta_data = reo_dest_ring->rx_mpdu_info.meta_data;
reo_ent_ring->queue_addr_lo = reo_dest_ring->queue_addr_lo;
reo_ent_ring->info0 = FIELD_PREP(HAL_REO_ENTR_RING_INFO0_QUEUE_ADDR_HI,
FIELD_GET(HAL_REO_DEST_RING_INFO0_QUEUE_ADDR_HI,
reo_dest_ring->info0)) |
FIELD_PREP(HAL_REO_ENTR_RING_INFO0_DEST_IND, dst_idx);
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
return 0;
err_free_idr:
spin_lock_bh(&rx_refill_ring->idr_lock);
idr_remove(&rx_refill_ring->bufs_idr, buf_id);
spin_unlock_bh(&rx_refill_ring->idr_lock);
err_unmap_dma:
dma_unmap_single(ab->dev, paddr, defrag_skb->len + skb_tailroom(defrag_skb),
DMA_FROM_DEVICE);
return ret;
}
static int ath11k_dp_rx_h_cmp_frags(struct sk_buff *a, struct sk_buff *b)
{
int frag1, frag2;
frag1 = ath11k_dp_rx_h_mpdu_start_frag_no(a);
frag2 = ath11k_dp_rx_h_mpdu_start_frag_no(b);
return frag1 - frag2;
}
static void ath11k_dp_rx_h_sort_frags(struct sk_buff_head *frag_list,
struct sk_buff *cur_frag)
{
struct sk_buff *skb;
int cmp;
skb_queue_walk(frag_list, skb) {
cmp = ath11k_dp_rx_h_cmp_frags(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 ath11k_dp_rx_h_get_pn(struct sk_buff *skb)
{
struct ieee80211_hdr *hdr;
u64 pn = 0;
u8 *ehdr;
hdr = (struct ieee80211_hdr *)(skb->data + HAL_RX_DESC_SIZE);
ehdr = skb->data + HAL_RX_DESC_SIZE + 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
ath11k_dp_rx_h_defrag_validate_incr_pn(struct ath11k *ar, struct dp_rx_tid *rx_tid)
{
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 = ath11k_dp_rx_h_mpdu_start_enctype(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 = ath11k_dp_rx_h_get_pn(first_frag);
skb_queue_walk(&rx_tid->rx_frags, skb) {
if (skb == first_frag)
continue;
cur_pn = ath11k_dp_rx_h_get_pn(skb);
if (cur_pn != last_pn + 1)
return false;
last_pn = cur_pn;
}
return true;
}
static int ath11k_dp_rx_frag_h_mpdu(struct ath11k *ar,
struct sk_buff *msdu,
u32 *ring_desc)
{
struct ath11k_base *ab = ar->ab;
struct hal_rx_desc *rx_desc;
struct ath11k_peer *peer;
struct 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 = ath11k_dp_rx_h_mpdu_start_peer_id(rx_desc);
tid = ath11k_dp_rx_h_mpdu_start_tid(rx_desc);
seqno = ath11k_dp_rx_h_mpdu_start_seq_no(rx_desc);
frag_no = ath11k_dp_rx_h_mpdu_start_frag_no(msdu);
more_frags = ath11k_dp_rx_h_mpdu_start_more_frags(msdu);
if (!ath11k_dp_rx_h_mpdu_start_seq_ctrl_valid(rx_desc) ||
!ath11k_dp_rx_h_mpdu_start_fc_valid(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 = ath11k_peer_find_by_id(ab, peer_id);
if (!peer) {
ath11k_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 */
ath11k_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
ath11k_dp_rx_h_sort_frags(&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 {
ath11k_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 +
ATH11K_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 = ath11k_peer_find_by_id(ab, peer_id);
if (!peer)
goto err_frags_cleanup;
if (!ath11k_dp_rx_h_defrag_validate_incr_pn(ar, rx_tid))
goto err_frags_cleanup;
if (ath11k_dp_rx_h_defrag(ar, peer, rx_tid, &defrag_skb))
goto err_frags_cleanup;
if (!defrag_skb)
goto err_frags_cleanup;
if (ath11k_dp_rx_h_defrag_reo_reinject(ar, rx_tid, defrag_skb))
goto err_frags_cleanup;
ath11k_dp_rx_frags_cleanup(rx_tid, false);
goto out_unlock;
err_frags_cleanup:
dev_kfree_skb_any(defrag_skb);
ath11k_dp_rx_frags_cleanup(rx_tid, true);
out_unlock:
spin_unlock_bh(&ab->base_lock);
return ret;
}
static int
ath11k_dp_process_rx_err_buf(struct ath11k *ar, u32 *ring_desc, int buf_id, bool drop)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct dp_rxdma_ring *rx_ring = &dp->rx_refill_buf_ring;
struct sk_buff *msdu;
struct ath11k_skb_rxcb *rxcb;
struct hal_rx_desc *rx_desc;
u8 *hdr_status;
u16 msdu_len;
spin_lock_bh(&rx_ring->idr_lock);
msdu = idr_find(&rx_ring->bufs_idr, buf_id);
if (!msdu) {
ath11k_warn(ar->ab, "rx err buf with invalid buf_id %d\n",
buf_id);
spin_unlock_bh(&rx_ring->idr_lock);
return -EINVAL;
}
idr_remove(&rx_ring->bufs_idr, buf_id);
spin_unlock_bh(&rx_ring->idr_lock);
rxcb = ATH11K_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(ATH11K_CAC_RUNNING, &ar->dev_flags)) {
dev_kfree_skb_any(msdu);
goto exit;
}
rx_desc = (struct hal_rx_desc *)msdu->data;
msdu_len = ath11k_dp_rx_h_msdu_start_msdu_len(rx_desc);
if ((msdu_len + HAL_RX_DESC_SIZE) > DP_RX_BUFFER_SIZE) {
hdr_status = ath11k_dp_rx_h_80211_hdr(rx_desc);
ath11k_warn(ar->ab, "invalid msdu leng %u", msdu_len);
ath11k_dbg_dump(ar->ab, ATH11K_DBG_DATA, NULL, "", hdr_status,
sizeof(struct ieee80211_hdr));
ath11k_dbg_dump(ar->ab, ATH11K_DBG_DATA, NULL, "", rx_desc,
sizeof(struct hal_rx_desc));
dev_kfree_skb_any(msdu);
goto exit;
}
skb_put(msdu, HAL_RX_DESC_SIZE + msdu_len);
if (ath11k_dp_rx_frag_h_mpdu(ar, msdu, ring_desc)) {
dev_kfree_skb_any(msdu);
ath11k_dp_rx_link_desc_return(ar->ab, ring_desc,
HAL_WBM_REL_BM_ACT_PUT_IN_IDLE);
}
exit:
rcu_read_unlock();
return 0;
}
int ath11k_dp_process_rx_err(struct ath11k_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;
int tot_n_bufs_reaped, quota, ret, i;
int n_bufs_reaped[MAX_RADIOS] = {0};
struct dp_rxdma_ring *rx_ring;
struct dp_srng *reo_except;
u32 desc_bank, num_msdus;
struct hal_srng *srng;
struct ath11k_dp *dp;
void *link_desc_va;
int buf_id, mac_id;
struct ath11k *ar;
dma_addr_t paddr;
u32 *desc;
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);
ath11k_hal_srng_access_begin(ab, srng);
while (budget &&
(desc = ath11k_hal_srng_dst_get_next_entry(ab, srng))) {
struct hal_reo_dest_ring *reo_desc = (struct hal_reo_dest_ring *)desc;
ab->soc_stats.err_ring_pkts++;
ret = ath11k_hal_desc_reo_parse_err(ab, desc, &paddr,
&desc_bank);
if (ret) {
ath11k_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);
ath11k_hal_rx_msdu_link_info_get(link_desc_va, &num_msdus, msdu_cookies,
&rbm);
if (rbm != HAL_RX_BUF_RBM_WBM_IDLE_DESC_LIST &&
rbm != HAL_RX_BUF_RBM_SW3_BM) {
ab->soc_stats.invalid_rbm++;
ath11k_warn(ab, "invalid return buffer manager %d\n", rbm);
ath11k_dp_rx_link_desc_return(ab, desc,
HAL_WBM_REL_BM_ACT_REL_MSDU);
continue;
}
is_frag = !!(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 */
ath11k_dp_rx_link_desc_return(ab, desc,
HAL_WBM_REL_BM_ACT_PUT_IN_IDLE);
}
for (i = 0; i < num_msdus; i++) {
buf_id = FIELD_GET(DP_RXDMA_BUF_COOKIE_BUF_ID,
msdu_cookies[i]);
mac_id = FIELD_GET(DP_RXDMA_BUF_COOKIE_PDEV_ID,
msdu_cookies[i]);
ar = ab->pdevs[mac_id].ar;
if (!ath11k_dp_process_rx_err_buf(ar, desc, buf_id, drop)) {
n_bufs_reaped[mac_id]++;
tot_n_bufs_reaped++;
}
}
if (tot_n_bufs_reaped >= quota) {
tot_n_bufs_reaped = quota;
goto exit;
}
budget = quota - tot_n_bufs_reaped;
}
exit:
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
for (i = 0; i < ab->num_radios; i++) {
if (!n_bufs_reaped[i])
continue;
ar = ab->pdevs[i].ar;
rx_ring = &ar->dp.rx_refill_buf_ring;
ath11k_dp_rxbufs_replenish(ab, i, rx_ring, n_bufs_reaped[i],
HAL_RX_BUF_RBM_SW3_BM);
}
return tot_n_bufs_reaped;
}
static void ath11k_dp_rx_null_q_desc_sg_drop(struct ath11k *ar,
int msdu_len,
struct sk_buff_head *msdu_list)
{
struct sk_buff *skb, *tmp;
struct ath11k_skb_rxcb *rxcb;
int n_buffs;
n_buffs = DIV_ROUND_UP(msdu_len,
(DP_RX_BUFFER_SIZE - HAL_RX_DESC_SIZE));
skb_queue_walk_safe(msdu_list, skb, tmp) {
rxcb = ATH11K_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 ath11k_dp_rx_h_null_q_desc(struct ath11k *ar, struct sk_buff *msdu,
struct ieee80211_rx_status *status,
struct sk_buff_head *msdu_list)
{
u16 msdu_len;
struct hal_rx_desc *desc = (struct hal_rx_desc *)msdu->data;
u8 l3pad_bytes;
struct ath11k_skb_rxcb *rxcb = ATH11K_SKB_RXCB(msdu);
msdu_len = ath11k_dp_rx_h_msdu_start_msdu_len(desc);
if (!rxcb->is_frag && ((msdu_len + HAL_RX_DESC_SIZE) > 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_SIZE);
ath11k_dp_rx_null_q_desc_sg_drop(ar, msdu_len, msdu_list);
return -EINVAL;
}
if (!ath11k_dp_rx_h_attn_msdu_done(desc)) {
ath11k_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.
*/
rxcb->is_first_msdu = ath11k_dp_rx_h_msdu_end_first_msdu(desc);
rxcb->is_last_msdu = ath11k_dp_rx_h_msdu_end_last_msdu(desc);
if (rxcb->is_frag) {
skb_pull(msdu, HAL_RX_DESC_SIZE);
} else {
l3pad_bytes = ath11k_dp_rx_h_msdu_end_l3pad(desc);
if ((HAL_RX_DESC_SIZE + l3pad_bytes + msdu_len) > DP_RX_BUFFER_SIZE)
return -EINVAL;
skb_put(msdu, HAL_RX_DESC_SIZE + l3pad_bytes + msdu_len);
skb_pull(msdu, HAL_RX_DESC_SIZE + l3pad_bytes);
}
ath11k_dp_rx_h_ppdu(ar, desc, status);
ath11k_dp_rx_h_mpdu(ar, msdu, desc, status);
rxcb->tid = ath11k_dp_rx_h_mpdu_start_tid(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 ath11k_dp_rx_h_reo_err(struct ath11k *ar, struct sk_buff *msdu,
struct ieee80211_rx_status *status,
struct sk_buff_head *msdu_list)
{
struct ath11k_skb_rxcb *rxcb = ATH11K_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 (ath11k_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 ath11k_dp_rx_h_tkip_mic_err(struct ath11k *ar, struct sk_buff *msdu,
struct ieee80211_rx_status *status)
{
u16 msdu_len;
struct hal_rx_desc *desc = (struct hal_rx_desc *)msdu->data;
u8 l3pad_bytes;
struct ath11k_skb_rxcb *rxcb = ATH11K_SKB_RXCB(msdu);
rxcb->is_first_msdu = ath11k_dp_rx_h_msdu_end_first_msdu(desc);
rxcb->is_last_msdu = ath11k_dp_rx_h_msdu_end_last_msdu(desc);
l3pad_bytes = ath11k_dp_rx_h_msdu_end_l3pad(desc);
msdu_len = ath11k_dp_rx_h_msdu_start_msdu_len(desc);
skb_put(msdu, HAL_RX_DESC_SIZE + l3pad_bytes + msdu_len);
skb_pull(msdu, HAL_RX_DESC_SIZE + l3pad_bytes);
ath11k_dp_rx_h_ppdu(ar, desc, status);
status->flag |= (RX_FLAG_MMIC_STRIPPED | RX_FLAG_MMIC_ERROR |
RX_FLAG_DECRYPTED);
ath11k_dp_rx_h_undecap(ar, msdu, desc,
HAL_ENCRYPT_TYPE_TKIP_MIC, status, false);
}
static bool ath11k_dp_rx_h_rxdma_err(struct ath11k *ar, struct sk_buff *msdu,
struct ieee80211_rx_status *status)
{
struct ath11k_skb_rxcb *rxcb = ATH11K_SKB_RXCB(msdu);
bool drop = false;
ar->ab->soc_stats.rxdma_error[rxcb->err_code]++;
switch (rxcb->err_code) {
case HAL_REO_ENTR_RING_RXDMA_ECODE_TKIP_MIC_ERR:
ath11k_dp_rx_h_tkip_mic_err(ar, msdu, status);
break;
default:
/* TODO: Review other rxdma error code to check if anything is
* worth reporting to mac80211
*/
drop = true;
break;
}
return drop;
}
static void ath11k_dp_rx_wbm_err(struct ath11k *ar,
struct napi_struct *napi,
struct sk_buff *msdu,
struct sk_buff_head *msdu_list)
{
struct ath11k_skb_rxcb *rxcb = ATH11K_SKB_RXCB(msdu);
struct ieee80211_rx_status rxs = {0};
struct ieee80211_rx_status *status;
bool drop = true;
switch (rxcb->err_rel_src) {
case HAL_WBM_REL_SRC_MODULE_REO:
drop = ath11k_dp_rx_h_reo_err(ar, msdu, &rxs, msdu_list);
break;
case HAL_WBM_REL_SRC_MODULE_RXDMA:
drop = ath11k_dp_rx_h_rxdma_err(ar, msdu, &rxs);
break;
default:
/* msdu will get freed */
break;
}
if (drop) {
dev_kfree_skb_any(msdu);
return;
}
status = IEEE80211_SKB_RXCB(msdu);
*status = rxs;
ath11k_dp_rx_deliver_msdu(ar, napi, msdu);
}
int ath11k_dp_rx_process_wbm_err(struct ath11k_base *ab,
struct napi_struct *napi, int budget)
{
struct ath11k *ar;
struct ath11k_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 ath11k_skb_rxcb *rxcb;
u32 *rx_desc;
int buf_id, mac_id;
int num_buffs_reaped[MAX_RADIOS] = {0};
int total_num_buffs_reaped = 0;
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];
spin_lock_bh(&srng->lock);
ath11k_hal_srng_access_begin(ab, srng);
while (budget) {
rx_desc = ath11k_hal_srng_dst_get_next_entry(ab, srng);
if (!rx_desc)
break;
ret = ath11k_hal_wbm_desc_parse_err(ab, rx_desc, &err_info);
if (ret) {
ath11k_warn(ab,
"failed to parse rx error in wbm_rel ring desc %d\n",
ret);
continue;
}
buf_id = FIELD_GET(DP_RXDMA_BUF_COOKIE_BUF_ID, err_info.cookie);
mac_id = FIELD_GET(DP_RXDMA_BUF_COOKIE_PDEV_ID, err_info.cookie);
ar = ab->pdevs[mac_id].ar;
rx_ring = &ar->dp.rx_refill_buf_ring;
spin_lock_bh(&rx_ring->idr_lock);
msdu = idr_find(&rx_ring->bufs_idr, buf_id);
if (!msdu) {
ath11k_warn(ab, "frame rx with invalid buf_id %d pdev %d\n",
buf_id, mac_id);
spin_unlock_bh(&rx_ring->idr_lock);
continue;
}
idr_remove(&rx_ring->bufs_idr, buf_id);
spin_unlock_bh(&rx_ring->idr_lock);
rxcb = ATH11K_SKB_RXCB(msdu);
dma_unmap_single(ab->dev, rxcb->paddr,
msdu->len + skb_tailroom(msdu),
DMA_FROM_DEVICE);
num_buffs_reaped[mac_id]++;
total_num_buffs_reaped++;
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);
}
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
if (!total_num_buffs_reaped)
goto done;
for (i = 0; i < ab->num_radios; i++) {
if (!num_buffs_reaped[i])
continue;
ar = ab->pdevs[i].ar;
rx_ring = &ar->dp.rx_refill_buf_ring;
ath11k_dp_rxbufs_replenish(ab, i, rx_ring, num_buffs_reaped[i],
HAL_RX_BUF_RBM_SW3_BM);
}
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(ATH11K_CAC_RUNNING, &ar->dev_flags)) {
__skb_queue_purge(&msdu_list[i]);
continue;
}
while ((msdu = __skb_dequeue(&msdu_list[i])) != NULL)
ath11k_dp_rx_wbm_err(ar, napi, msdu, &msdu_list[i]);
}
rcu_read_unlock();
done:
return total_num_buffs_reaped;
}
int ath11k_dp_process_rxdma_err(struct ath11k_base *ab, int mac_id, int budget)
{
struct ath11k *ar;
struct dp_srng *err_ring;
struct dp_rxdma_ring *rx_ring;
struct dp_link_desc_bank *link_desc_banks = ab->dp.link_desc_banks;
struct hal_srng *srng;
u32 msdu_cookies[HAL_NUM_RX_MSDUS_PER_LINK_DESC];
enum hal_rx_buf_return_buf_manager rbm;
enum hal_reo_entr_rxdma_ecode rxdma_err_code;
struct ath11k_skb_rxcb *rxcb;
struct sk_buff *skb;
struct hal_reo_entrance_ring *entr_ring;
void *desc;
int num_buf_freed = 0;
int quota = budget;
dma_addr_t paddr;
u32 desc_bank;
void *link_desc_va;
int num_msdus;
int i;
int buf_id;
ar = ab->pdevs[ath11k_hw_mac_id_to_pdev_id(&ab->hw_params, mac_id)].ar;
err_ring = &ar->dp.rxdma_err_dst_ring[ath11k_hw_mac_id_to_srng_id(&ab->hw_params,
mac_id)];
rx_ring = &ar->dp.rx_refill_buf_ring;
srng = &ab->hal.srng_list[err_ring->ring_id];
spin_lock_bh(&srng->lock);
ath11k_hal_srng_access_begin(ab, srng);
while (quota-- &&
(desc = ath11k_hal_srng_dst_get_next_entry(ab, srng))) {
ath11k_hal_rx_reo_ent_paddr_get(ab, desc, &paddr, &desc_bank);
entr_ring = (struct hal_reo_entrance_ring *)desc;
rxdma_err_code =
FIELD_GET(HAL_REO_ENTR_RING_INFO1_RXDMA_ERROR_CODE,
entr_ring->info1);
ab->soc_stats.rxdma_error[rxdma_err_code]++;
link_desc_va = link_desc_banks[desc_bank].vaddr +
(paddr - link_desc_banks[desc_bank].paddr);
ath11k_hal_rx_msdu_link_info_get(link_desc_va, &num_msdus,
msdu_cookies, &rbm);
for (i = 0; i < num_msdus; i++) {
buf_id = FIELD_GET(DP_RXDMA_BUF_COOKIE_BUF_ID,
msdu_cookies[i]);
spin_lock_bh(&rx_ring->idr_lock);
skb = idr_find(&rx_ring->bufs_idr, buf_id);
if (!skb) {
ath11k_warn(ab, "rxdma error with invalid buf_id %d\n",
buf_id);
spin_unlock_bh(&rx_ring->idr_lock);
continue;
}
idr_remove(&rx_ring->bufs_idr, buf_id);
spin_unlock_bh(&rx_ring->idr_lock);
rxcb = ATH11K_SKB_RXCB(skb);
dma_unmap_single(ab->dev, rxcb->paddr,
skb->len + skb_tailroom(skb),
DMA_FROM_DEVICE);
dev_kfree_skb_any(skb);
num_buf_freed++;
}
ath11k_dp_rx_link_desc_return(ab, desc,
HAL_WBM_REL_BM_ACT_PUT_IN_IDLE);
}
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
if (num_buf_freed)
ath11k_dp_rxbufs_replenish(ab, mac_id, rx_ring, num_buf_freed,
HAL_RX_BUF_RBM_SW3_BM);
return budget - quota;
}
void ath11k_dp_process_reo_status(struct ath11k_base *ab)
{
struct ath11k_dp *dp = &ab->dp;
struct hal_srng *srng;
struct dp_reo_cmd *cmd, *tmp;
bool found = false;
u32 *reo_desc;
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);
ath11k_hal_srng_access_begin(ab, srng);
while ((reo_desc = ath11k_hal_srng_dst_get_next_entry(ab, srng))) {
tag = FIELD_GET(HAL_SRNG_TLV_HDR_TAG, *reo_desc);
switch (tag) {
case HAL_REO_GET_QUEUE_STATS_STATUS:
ath11k_hal_reo_status_queue_stats(ab, reo_desc,
&reo_status);
break;
case HAL_REO_FLUSH_QUEUE_STATUS:
ath11k_hal_reo_flush_queue_status(ab, reo_desc,
&reo_status);
break;
case HAL_REO_FLUSH_CACHE_STATUS:
ath11k_hal_reo_flush_cache_status(ab, reo_desc,
&reo_status);
break;
case HAL_REO_UNBLOCK_CACHE_STATUS:
ath11k_hal_reo_unblk_cache_status(ab, reo_desc,
&reo_status);
break;
case HAL_REO_FLUSH_TIMEOUT_LIST_STATUS:
ath11k_hal_reo_flush_timeout_list_status(ab, reo_desc,
&reo_status);
break;
case HAL_REO_DESCRIPTOR_THRESHOLD_REACHED_STATUS:
ath11k_hal_reo_desc_thresh_reached_status(ab, reo_desc,
&reo_status);
break;
case HAL_REO_UPDATE_RX_REO_QUEUE_STATUS:
ath11k_hal_reo_update_rx_reo_queue_status(ab, reo_desc,
&reo_status);
break;
default:
ath11k_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;
}
ath11k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
}
void ath11k_dp_rx_pdev_free(struct ath11k_base *ab, int mac_id)
{
struct ath11k *ar = ab->pdevs[mac_id].ar;
ath11k_dp_rx_pdev_srng_free(ar);
ath11k_dp_rxdma_pdev_buf_free(ar);
}
int ath11k_dp_rx_pdev_alloc(struct ath11k_base *ab, int mac_id)
{
struct ath11k *ar = ab->pdevs[mac_id].ar;
struct ath11k_pdev_dp *dp = &ar->dp;
u32 ring_id;
int i;
int ret;
ret = ath11k_dp_rx_pdev_srng_alloc(ar);
if (ret) {
ath11k_warn(ab, "failed to setup rx srngs\n");
return ret;
}
ret = ath11k_dp_rxdma_pdev_buf_setup(ar);
if (ret) {
ath11k_warn(ab, "failed to setup rxdma ring\n");
return ret;
}
ring_id = dp->rx_refill_buf_ring.refill_buf_ring.ring_id;
ret = ath11k_dp_tx_htt_srng_setup(ab, ring_id, mac_id, HAL_RXDMA_BUF);
if (ret) {
ath11k_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 = ath11k_dp_tx_htt_srng_setup(ab, ring_id,
mac_id + i, HAL_RXDMA_BUF);
if (ret) {
ath11k_warn(ab, "failed to configure rx_mac_buf_ring%d %d\n",
i, ret);
return ret;
}
}
}
for (i = 0; i < ab->hw_params.num_rxmda_per_pdev; i++) {
ring_id = dp->rxdma_err_dst_ring[i].ring_id;
ret = ath11k_dp_tx_htt_srng_setup(ab, ring_id,
mac_id + i, HAL_RXDMA_DST);
if (ret) {
ath11k_warn(ab, "failed to configure rxdma_err_dest_ring%d %d\n",
i, ret);
return ret;
}
}
if (!ab->hw_params.rxdma1_enable)
goto config_refill_ring;
ring_id = dp->rxdma_mon_buf_ring.refill_buf_ring.ring_id;
ret = ath11k_dp_tx_htt_srng_setup(ab, ring_id,
mac_id, HAL_RXDMA_MONITOR_BUF);
if (ret) {
ath11k_warn(ab, "failed to configure rxdma_mon_buf_ring %d\n",
ret);
return ret;
}
ret = ath11k_dp_tx_htt_srng_setup(ab,
dp->rxdma_mon_dst_ring.ring_id,
mac_id, HAL_RXDMA_MONITOR_DST);
if (ret) {
ath11k_warn(ab, "failed to configure rxdma_mon_dst_ring %d\n",
ret);
return ret;
}
ret = ath11k_dp_tx_htt_srng_setup(ab,
dp->rxdma_mon_desc_ring.ring_id,
mac_id, HAL_RXDMA_MONITOR_DESC);
if (ret) {
ath11k_warn(ab, "failed to configure rxdma_mon_dst_ring %d\n",
ret);
return ret;
}
config_refill_ring:
for (i = 0; i < ab->hw_params.num_rxmda_per_pdev; i++) {
ring_id = dp->rx_mon_status_refill_ring[i].refill_buf_ring.ring_id;
ret = ath11k_dp_tx_htt_srng_setup(ab, ring_id, mac_id + i,
HAL_RXDMA_MONITOR_STATUS);
if (ret) {
ath11k_warn(ab,
"failed to configure mon_status_refill_ring%d %d\n",
i, ret);
return ret;
}
}
return 0;
}
static void ath11k_dp_mon_set_frag_len(u32 *total_len, u32 *frag_len)
{
if (*total_len >= (DP_RX_BUFFER_SIZE - sizeof(struct hal_rx_desc))) {
*frag_len = DP_RX_BUFFER_SIZE - sizeof(struct hal_rx_desc);
*total_len -= *frag_len;
} else {
*frag_len = *total_len;
*total_len = 0;
}
}
static
int ath11k_dp_rx_monitor_link_desc_return(struct ath11k *ar,
void *p_last_buf_addr_info,
u8 mac_id)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct dp_srng *dp_srng;
void *hal_srng;
void *src_srng_desc;
int ret = 0;
if (ar->ab->hw_params.rxdma1_enable) {
dp_srng = &dp->rxdma_mon_desc_ring;
hal_srng = &ar->ab->hal.srng_list[dp_srng->ring_id];
} else {
dp_srng = &ar->ab->dp.wbm_desc_rel_ring;
hal_srng = &ar->ab->hal.srng_list[dp_srng->ring_id];
}
ath11k_hal_srng_access_begin(ar->ab, hal_srng);
src_srng_desc = ath11k_hal_srng_src_get_next_entry(ar->ab, hal_srng);
if (src_srng_desc) {
struct ath11k_buffer_addr *src_desc =
(struct ath11k_buffer_addr *)src_srng_desc;
*src_desc = *((struct ath11k_buffer_addr *)p_last_buf_addr_info);
} else {
ath11k_dbg(ar->ab, ATH11K_DBG_DATA,
"Monitor Link Desc Ring %d Full", mac_id);
ret = -ENOMEM;
}
ath11k_hal_srng_access_end(ar->ab, hal_srng);
return ret;
}
static
void ath11k_dp_rx_mon_next_link_desc_get(void *rx_msdu_link_desc,
dma_addr_t *paddr, u32 *sw_cookie,
u8 *rbm,
void **pp_buf_addr_info)
{
struct hal_rx_msdu_link *msdu_link =
(struct hal_rx_msdu_link *)rx_msdu_link_desc;
struct ath11k_buffer_addr *buf_addr_info;
buf_addr_info = (struct ath11k_buffer_addr *)&msdu_link->buf_addr_info;
ath11k_hal_rx_buf_addr_info_get(buf_addr_info, paddr, sw_cookie, rbm);
*pp_buf_addr_info = (void *)buf_addr_info;
}
static int ath11k_dp_pkt_set_pktlen(struct sk_buff *skb, u32 len)
{
if (skb->len > len) {
skb_trim(skb, len);
} else {
if (skb_tailroom(skb) < len - skb->len) {
if ((pskb_expand_head(skb, 0,
len - skb->len - skb_tailroom(skb),
GFP_ATOMIC))) {
dev_kfree_skb_any(skb);
return -ENOMEM;
}
}
skb_put(skb, (len - skb->len));
}
return 0;
}
static void ath11k_hal_rx_msdu_list_get(struct ath11k *ar,
void *msdu_link_desc,
struct hal_rx_msdu_list *msdu_list,
u16 *num_msdus)
{
struct hal_rx_msdu_details *msdu_details = NULL;
struct rx_msdu_desc *msdu_desc_info = NULL;
struct hal_rx_msdu_link *msdu_link = NULL;
int i;
u32 last = FIELD_PREP(RX_MSDU_DESC_INFO0_LAST_MSDU_IN_MPDU, 1);
u32 first = FIELD_PREP(RX_MSDU_DESC_INFO0_FIRST_MSDU_IN_MPDU, 1);
u8 tmp = 0;
msdu_link = (struct hal_rx_msdu_link *)msdu_link_desc;
msdu_details = &msdu_link->msdu_link[0];
for (i = 0; i < HAL_RX_NUM_MSDU_DESC; i++) {
if (FIELD_GET(BUFFER_ADDR_INFO0_ADDR,
msdu_details[i].buf_addr_info.info0) == 0) {
msdu_desc_info = &msdu_details[i - 1].rx_msdu_info;
msdu_desc_info->info0 |= last;
;
break;
}
msdu_desc_info = &msdu_details[i].rx_msdu_info;
if (!i)
msdu_desc_info->info0 |= first;
else if (i == (HAL_RX_NUM_MSDU_DESC - 1))
msdu_desc_info->info0 |= last;
msdu_list->msdu_info[i].msdu_flags = msdu_desc_info->info0;
msdu_list->msdu_info[i].msdu_len =
HAL_RX_MSDU_PKT_LENGTH_GET(msdu_desc_info->info0);
msdu_list->sw_cookie[i] =
FIELD_GET(BUFFER_ADDR_INFO1_SW_COOKIE,
msdu_details[i].buf_addr_info.info1);
tmp = FIELD_GET(BUFFER_ADDR_INFO1_RET_BUF_MGR,
msdu_details[i].buf_addr_info.info1);
msdu_list->rbm[i] = tmp;
}
*num_msdus = i;
}
static u32 ath11k_dp_rx_mon_comp_ppduid(u32 msdu_ppdu_id, u32 *ppdu_id,
u32 *rx_bufs_used)
{
u32 ret = 0;
if ((*ppdu_id < msdu_ppdu_id) &&
((msdu_ppdu_id - *ppdu_id) < DP_NOT_PPDU_ID_WRAP_AROUND)) {
*ppdu_id = msdu_ppdu_id;
ret = msdu_ppdu_id;
} else if ((*ppdu_id > msdu_ppdu_id) &&
((*ppdu_id - msdu_ppdu_id) > DP_NOT_PPDU_ID_WRAP_AROUND)) {
/* mon_dst is behind than mon_status
* skip dst_ring and free it
*/
*rx_bufs_used += 1;
*ppdu_id = msdu_ppdu_id;
ret = msdu_ppdu_id;
}
return ret;
}
static void ath11k_dp_mon_get_buf_len(struct hal_rx_msdu_desc_info *info,
bool *is_frag, u32 *total_len,
u32 *frag_len, u32 *msdu_cnt)
{
if (info->msdu_flags & RX_MSDU_DESC_INFO0_MSDU_CONTINUATION) {
if (!*is_frag) {
*total_len = info->msdu_len;
*is_frag = true;
}
ath11k_dp_mon_set_frag_len(total_len,
frag_len);
} else {
if (*is_frag) {
ath11k_dp_mon_set_frag_len(total_len,
frag_len);
} else {
*frag_len = info->msdu_len;
}
*is_frag = false;
*msdu_cnt -= 1;
}
}
static u32
ath11k_dp_rx_mon_mpdu_pop(struct ath11k *ar, int mac_id,
void *ring_entry, struct sk_buff **head_msdu,
struct sk_buff **tail_msdu, u32 *npackets,
u32 *ppdu_id)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct ath11k_mon_data *pmon = (struct ath11k_mon_data *)&dp->mon_data;
struct dp_rxdma_ring *rx_ring = &dp->rxdma_mon_buf_ring;
struct sk_buff *msdu = NULL, *last = NULL;
struct hal_rx_msdu_list msdu_list;
void *p_buf_addr_info, *p_last_buf_addr_info;
struct hal_rx_desc *rx_desc;
void *rx_msdu_link_desc;
dma_addr_t paddr;
u16 num_msdus = 0;
u32 rx_buf_size, rx_pkt_offset, sw_cookie;
u32 rx_bufs_used = 0, i = 0;
u32 msdu_ppdu_id = 0, msdu_cnt = 0;
u32 total_len = 0, frag_len = 0;
bool is_frag, is_first_msdu;
bool drop_mpdu = false;
struct ath11k_skb_rxcb *rxcb;
struct hal_reo_entrance_ring *ent_desc =
(struct hal_reo_entrance_ring *)ring_entry;
int buf_id;
u32 rx_link_buf_info[2];
u8 rbm;
if (!ar->ab->hw_params.rxdma1_enable)
rx_ring = &dp->rx_refill_buf_ring;
ath11k_hal_rx_reo_ent_buf_paddr_get(ring_entry, &paddr,
&sw_cookie,
&p_last_buf_addr_info, &rbm,
&msdu_cnt);
if (FIELD_GET(HAL_REO_ENTR_RING_INFO1_RXDMA_PUSH_REASON,
ent_desc->info1) ==
HAL_REO_DEST_RING_PUSH_REASON_ERR_DETECTED) {
u8 rxdma_err =
FIELD_GET(HAL_REO_ENTR_RING_INFO1_RXDMA_ERROR_CODE,
ent_desc->info1);
if (rxdma_err == HAL_REO_ENTR_RING_RXDMA_ECODE_FLUSH_REQUEST_ERR ||
rxdma_err == HAL_REO_ENTR_RING_RXDMA_ECODE_MPDU_LEN_ERR ||
rxdma_err == HAL_REO_ENTR_RING_RXDMA_ECODE_OVERFLOW_ERR) {
drop_mpdu = true;
pmon->rx_mon_stats.dest_mpdu_drop++;
}
}
is_frag = false;
is_first_msdu = true;
do {
if (pmon->mon_last_linkdesc_paddr == paddr) {
pmon->rx_mon_stats.dup_mon_linkdesc_cnt++;
return rx_bufs_used;
}
if (ar->ab->hw_params.rxdma1_enable)
rx_msdu_link_desc =
(void *)pmon->link_desc_banks[sw_cookie].vaddr +
(paddr - pmon->link_desc_banks[sw_cookie].paddr);
else
rx_msdu_link_desc =
(void *)ar->ab->dp.link_desc_banks[sw_cookie].vaddr +
(paddr - ar->ab->dp.link_desc_banks[sw_cookie].paddr);
ath11k_hal_rx_msdu_list_get(ar, rx_msdu_link_desc, &msdu_list,
&num_msdus);
for (i = 0; i < num_msdus; i++) {
u32 l2_hdr_offset;
if (pmon->mon_last_buf_cookie == msdu_list.sw_cookie[i]) {
ath11k_dbg(ar->ab, ATH11K_DBG_DATA,
"i %d last_cookie %d is same\n",
i, pmon->mon_last_buf_cookie);
drop_mpdu = true;
pmon->rx_mon_stats.dup_mon_buf_cnt++;
continue;
}
buf_id = FIELD_GET(DP_RXDMA_BUF_COOKIE_BUF_ID,
msdu_list.sw_cookie[i]);
spin_lock_bh(&rx_ring->idr_lock);
msdu = idr_find(&rx_ring->bufs_idr, buf_id);
spin_unlock_bh(&rx_ring->idr_lock);
if (!msdu) {
ath11k_dbg(ar->ab, ATH11K_DBG_DATA,
"msdu_pop: invalid buf_id %d\n", buf_id);
break;
}
rxcb = ATH11K_SKB_RXCB(msdu);
if (!rxcb->unmapped) {
dma_unmap_single(ar->ab->dev, rxcb->paddr,
msdu->len +
skb_tailroom(msdu),
DMA_FROM_DEVICE);
rxcb->unmapped = 1;
}
if (drop_mpdu) {
ath11k_dbg(ar->ab, ATH11K_DBG_DATA,
"i %d drop msdu %p *ppdu_id %x\n",
i, msdu, *ppdu_id);
dev_kfree_skb_any(msdu);
msdu = NULL;
goto next_msdu;
}
rx_desc = (struct hal_rx_desc *)msdu->data;
rx_pkt_offset = sizeof(struct hal_rx_desc);
l2_hdr_offset = ath11k_dp_rx_h_msdu_end_l3pad(rx_desc);
if (is_first_msdu) {
if (!ath11k_dp_rxdesc_mpdu_valid(rx_desc)) {
drop_mpdu = true;
dev_kfree_skb_any(msdu);
msdu = NULL;
pmon->mon_last_linkdesc_paddr = paddr;
goto next_msdu;
}
msdu_ppdu_id =
ath11k_dp_rxdesc_get_ppduid(rx_desc);
if (ath11k_dp_rx_mon_comp_ppduid(msdu_ppdu_id,
ppdu_id,
&rx_bufs_used)) {
if (rx_bufs_used) {
drop_mpdu = true;
dev_kfree_skb_any(msdu);
msdu = NULL;
goto next_msdu;
}
return rx_bufs_used;
}
pmon->mon_last_linkdesc_paddr = paddr;
is_first_msdu = false;
}
ath11k_dp_mon_get_buf_len(&msdu_list.msdu_info[i],
&is_frag, &total_len,
&frag_len, &msdu_cnt);
rx_buf_size = rx_pkt_offset + l2_hdr_offset + frag_len;
ath11k_dp_pkt_set_pktlen(msdu, rx_buf_size);
if (!(*head_msdu))
*head_msdu = msdu;
else if (last)
last->next = msdu;
last = msdu;
next_msdu:
pmon->mon_last_buf_cookie = msdu_list.sw_cookie[i];
rx_bufs_used++;
spin_lock_bh(&rx_ring->idr_lock);
idr_remove(&rx_ring->bufs_idr, buf_id);
spin_unlock_bh(&rx_ring->idr_lock);
}
ath11k_hal_rx_buf_addr_info_set(rx_link_buf_info, paddr, sw_cookie, rbm);
ath11k_dp_rx_mon_next_link_desc_get(rx_msdu_link_desc, &paddr,
&sw_cookie, &rbm,
&p_buf_addr_info);
if (ar->ab->hw_params.rxdma1_enable) {
if (ath11k_dp_rx_monitor_link_desc_return(ar,
p_last_buf_addr_info,
dp->mac_id))
ath11k_dbg(ar->ab, ATH11K_DBG_DATA,
"dp_rx_monitor_link_desc_return failed");
} else {
ath11k_dp_rx_link_desc_return(ar->ab, rx_link_buf_info,
HAL_WBM_REL_BM_ACT_PUT_IN_IDLE);
}
p_last_buf_addr_info = p_buf_addr_info;
} while (paddr && msdu_cnt);
if (last)
last->next = NULL;
*tail_msdu = msdu;
if (msdu_cnt == 0)
*npackets = 1;
return rx_bufs_used;
}
static void ath11k_dp_rx_msdus_set_payload(struct sk_buff *msdu)
{
u32 rx_pkt_offset, l2_hdr_offset;
rx_pkt_offset = sizeof(struct hal_rx_desc);
l2_hdr_offset = ath11k_dp_rx_h_msdu_end_l3pad((struct hal_rx_desc *)msdu->data);
skb_pull(msdu, rx_pkt_offset + l2_hdr_offset);
}
static struct sk_buff *
ath11k_dp_rx_mon_merg_msdus(struct ath11k *ar,
u32 mac_id, struct sk_buff *head_msdu,
struct sk_buff *last_msdu,
struct ieee80211_rx_status *rxs)
{
struct sk_buff *msdu, *mpdu_buf, *prev_buf;
u32 decap_format, wifi_hdr_len;
struct hal_rx_desc *rx_desc;
char *hdr_desc;
u8 *dest;
struct ieee80211_hdr_3addr *wh;
mpdu_buf = NULL;
if (!head_msdu)
goto err_merge_fail;
rx_desc = (struct hal_rx_desc *)head_msdu->data;
if (ath11k_dp_rxdesc_get_mpdulen_err(rx_desc))
return NULL;
decap_format = ath11k_dp_rxdesc_get_decap_format(rx_desc);
ath11k_dp_rx_h_ppdu(ar, rx_desc, rxs);
if (decap_format == DP_RX_DECAP_TYPE_RAW) {
ath11k_dp_rx_msdus_set_payload(head_msdu);
prev_buf = head_msdu;
msdu = head_msdu->next;
while (msdu) {
ath11k_dp_rx_msdus_set_payload(msdu);
prev_buf = msdu;
msdu = msdu->next;
}
prev_buf->next = NULL;
skb_trim(prev_buf, prev_buf->len - HAL_RX_FCS_LEN);
} else if (decap_format == DP_RX_DECAP_TYPE_NATIVE_WIFI) {
__le16 qos_field;
u8 qos_pkt = 0;
rx_desc = (struct hal_rx_desc *)head_msdu->data;
hdr_desc = ath11k_dp_rxdesc_get_80211hdr(rx_desc);
/* Base size */
wifi_hdr_len = sizeof(struct ieee80211_hdr_3addr);
wh = (struct ieee80211_hdr_3addr *)hdr_desc;
if (ieee80211_is_data_qos(wh->frame_control)) {
struct ieee80211_qos_hdr *qwh =
(struct ieee80211_qos_hdr *)hdr_desc;
qos_field = qwh->qos_ctrl;
qos_pkt = 1;
}
msdu = head_msdu;
while (msdu) {
rx_desc = (struct hal_rx_desc *)msdu->data;
hdr_desc = ath11k_dp_rxdesc_get_80211hdr(rx_desc);
if (qos_pkt) {
dest = skb_push(msdu, sizeof(__le16));
if (!dest)
goto err_merge_fail;
memcpy(dest, hdr_desc, wifi_hdr_len);
memcpy(dest + wifi_hdr_len,
(u8 *)&qos_field, sizeof(__le16));
}
ath11k_dp_rx_msdus_set_payload(msdu);
prev_buf = msdu;
msdu = msdu->next;
}
dest = skb_put(prev_buf, HAL_RX_FCS_LEN);
if (!dest)
goto err_merge_fail;
ath11k_dbg(ar->ab, ATH11K_DBG_DATA,
"mpdu_buf %pK mpdu_buf->len %u",
prev_buf, prev_buf->len);
} else {
ath11k_dbg(ar->ab, ATH11K_DBG_DATA,
"decap format %d is not supported!\n",
decap_format);
goto err_merge_fail;
}
return head_msdu;
err_merge_fail:
if (mpdu_buf && decap_format != DP_RX_DECAP_TYPE_RAW) {
ath11k_dbg(ar->ab, ATH11K_DBG_DATA,
"err_merge_fail mpdu_buf %pK", mpdu_buf);
/* Free the head buffer */
dev_kfree_skb_any(mpdu_buf);
}
return NULL;
}
static int ath11k_dp_rx_mon_deliver(struct ath11k *ar, u32 mac_id,
struct sk_buff *head_msdu,
struct sk_buff *tail_msdu,
struct napi_struct *napi)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct sk_buff *mon_skb, *skb_next, *header;
struct ieee80211_rx_status *rxs = &dp->rx_status, *status;
mon_skb = ath11k_dp_rx_mon_merg_msdus(ar, mac_id, head_msdu,
tail_msdu, rxs);
if (!mon_skb)
goto mon_deliver_fail;
header = mon_skb;
rxs->flag = 0;
do {
skb_next = mon_skb->next;
if (!skb_next)
rxs->flag &= ~RX_FLAG_AMSDU_MORE;
else
rxs->flag |= RX_FLAG_AMSDU_MORE;
if (mon_skb == header) {
header = NULL;
rxs->flag &= ~RX_FLAG_ALLOW_SAME_PN;
} else {
rxs->flag |= RX_FLAG_ALLOW_SAME_PN;
}
rxs->flag |= RX_FLAG_ONLY_MONITOR;
status = IEEE80211_SKB_RXCB(mon_skb);
*status = *rxs;
ath11k_dp_rx_deliver_msdu(ar, napi, mon_skb);
mon_skb = skb_next;
} while (mon_skb);
rxs->flag = 0;
return 0;
mon_deliver_fail:
mon_skb = head_msdu;
while (mon_skb) {
skb_next = mon_skb->next;
dev_kfree_skb_any(mon_skb);
mon_skb = skb_next;
}
return -EINVAL;
}
static void ath11k_dp_rx_mon_dest_process(struct ath11k *ar, int mac_id,
u32 quota, struct napi_struct *napi)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct ath11k_mon_data *pmon = (struct ath11k_mon_data *)&dp->mon_data;
void *ring_entry;
void *mon_dst_srng;
u32 ppdu_id;
u32 rx_bufs_used;
u32 ring_id;
struct ath11k_pdev_mon_stats *rx_mon_stats;
u32 npackets = 0;
if (ar->ab->hw_params.rxdma1_enable)
ring_id = dp->rxdma_mon_dst_ring.ring_id;
else
ring_id = dp->rxdma_err_dst_ring[mac_id].ring_id;
mon_dst_srng = &ar->ab->hal.srng_list[ring_id];
if (!mon_dst_srng) {
ath11k_warn(ar->ab,
"HAL Monitor Destination Ring Init Failed -- %pK",
mon_dst_srng);
return;
}
spin_lock_bh(&pmon->mon_lock);
ath11k_hal_srng_access_begin(ar->ab, mon_dst_srng);
ppdu_id = pmon->mon_ppdu_info.ppdu_id;
rx_bufs_used = 0;
rx_mon_stats = &pmon->rx_mon_stats;
while ((ring_entry = ath11k_hal_srng_dst_peek(ar->ab, mon_dst_srng))) {
struct sk_buff *head_msdu, *tail_msdu;
head_msdu = NULL;
tail_msdu = NULL;
rx_bufs_used += ath11k_dp_rx_mon_mpdu_pop(ar, mac_id, ring_entry,
&head_msdu,
&tail_msdu,
&npackets, &ppdu_id);
if (ppdu_id != pmon->mon_ppdu_info.ppdu_id) {
pmon->mon_ppdu_status = DP_PPDU_STATUS_START;
ath11k_dbg(ar->ab, ATH11K_DBG_DATA,
"dest_rx: new ppdu_id %x != status ppdu_id %x",
ppdu_id, pmon->mon_ppdu_info.ppdu_id);
break;
}
if (head_msdu && tail_msdu) {
ath11k_dp_rx_mon_deliver(ar, dp->mac_id, head_msdu,
tail_msdu, napi);
rx_mon_stats->dest_mpdu_done++;
}
ring_entry = ath11k_hal_srng_dst_get_next_entry(ar->ab,
mon_dst_srng);
}
ath11k_hal_srng_access_end(ar->ab, mon_dst_srng);
spin_unlock_bh(&pmon->mon_lock);
if (rx_bufs_used) {
rx_mon_stats->dest_ppdu_done++;
if (ar->ab->hw_params.rxdma1_enable)
ath11k_dp_rxbufs_replenish(ar->ab, dp->mac_id,
&dp->rxdma_mon_buf_ring,
rx_bufs_used,
HAL_RX_BUF_RBM_SW3_BM);
else
ath11k_dp_rxbufs_replenish(ar->ab, dp->mac_id,
&dp->rx_refill_buf_ring,
rx_bufs_used,
HAL_RX_BUF_RBM_SW3_BM);
}
}
static void ath11k_dp_rx_mon_status_process_tlv(struct ath11k *ar,
int mac_id, u32 quota,
struct napi_struct *napi)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct ath11k_mon_data *pmon = (struct ath11k_mon_data *)&dp->mon_data;
struct hal_rx_mon_ppdu_info *ppdu_info;
struct sk_buff *status_skb;
u32 tlv_status = HAL_TLV_STATUS_BUF_DONE;
struct ath11k_pdev_mon_stats *rx_mon_stats;
ppdu_info = &pmon->mon_ppdu_info;
rx_mon_stats = &pmon->rx_mon_stats;
if (pmon->mon_ppdu_status != DP_PPDU_STATUS_START)
return;
while (!skb_queue_empty(&pmon->rx_status_q)) {
status_skb = skb_dequeue(&pmon->rx_status_q);
tlv_status = ath11k_hal_rx_parse_mon_status(ar->ab, ppdu_info,
status_skb);
if (tlv_status == HAL_TLV_STATUS_PPDU_DONE) {
rx_mon_stats->status_ppdu_done++;
pmon->mon_ppdu_status = DP_PPDU_STATUS_DONE;
ath11k_dp_rx_mon_dest_process(ar, mac_id, quota, napi);
pmon->mon_ppdu_status = DP_PPDU_STATUS_START;
}
dev_kfree_skb_any(status_skb);
}
}
static int ath11k_dp_mon_process_rx(struct ath11k_base *ab, int mac_id,
struct napi_struct *napi, int budget)
{
struct ath11k *ar = ath11k_ab_to_ar(ab, mac_id);
struct ath11k_pdev_dp *dp = &ar->dp;
struct ath11k_mon_data *pmon = (struct ath11k_mon_data *)&dp->mon_data;
int num_buffs_reaped = 0;
num_buffs_reaped = ath11k_dp_rx_reap_mon_status_ring(ar->ab, mac_id, &budget,
&pmon->rx_status_q);
if (num_buffs_reaped)
ath11k_dp_rx_mon_status_process_tlv(ar, mac_id, budget, napi);
return num_buffs_reaped;
}
int ath11k_dp_rx_process_mon_rings(struct ath11k_base *ab, int mac_id,
struct napi_struct *napi, int budget)
{
struct ath11k *ar = ath11k_ab_to_ar(ab, mac_id);
int ret = 0;
if (test_bit(ATH11K_FLAG_MONITOR_ENABLED, &ar->monitor_flags))
ret = ath11k_dp_mon_process_rx(ab, mac_id, napi, budget);
else
ret = ath11k_dp_rx_process_mon_status(ab, mac_id, napi, budget);
return ret;
}
static int ath11k_dp_rx_pdev_mon_status_attach(struct ath11k *ar)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct ath11k_mon_data *pmon = (struct ath11k_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 ath11k_dp_rx_pdev_mon_attach(struct ath11k *ar)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct ath11k_mon_data *pmon = &dp->mon_data;
struct hal_srng *mon_desc_srng = NULL;
struct dp_srng *dp_srng;
int ret = 0;
u32 n_link_desc = 0;
ret = ath11k_dp_rx_pdev_mon_status_attach(ar);
if (ret) {
ath11k_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;
dp_srng = &dp->rxdma_mon_desc_ring;
n_link_desc = dp_srng->size /
ath11k_hal_srng_get_entrysize(ar->ab, HAL_RXDMA_MONITOR_DESC);
mon_desc_srng =
&ar->ab->hal.srng_list[dp->rxdma_mon_desc_ring.ring_id];
ret = ath11k_dp_link_desc_setup(ar->ab, pmon->link_desc_banks,
HAL_RXDMA_MONITOR_DESC, mon_desc_srng,
n_link_desc);
if (ret) {
ath11k_warn(ar->ab, "mon_link_desc_pool_setup() failed");
return ret;
}
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;
}
static int ath11k_dp_mon_link_free(struct ath11k *ar)
{
struct ath11k_pdev_dp *dp = &ar->dp;
struct ath11k_mon_data *pmon = &dp->mon_data;
ath11k_dp_link_desc_cleanup(ar->ab, pmon->link_desc_banks,
HAL_RXDMA_MONITOR_DESC,
&dp->rxdma_mon_desc_ring);
return 0;
}
int ath11k_dp_rx_pdev_mon_detach(struct ath11k *ar)
{
ath11k_dp_mon_link_free(ar);
return 0;
}
int ath11k_dp_rx_pktlog_start(struct ath11k_base *ab)
{
/* start reap timer */
mod_timer(&ab->mon_reap_timer,
jiffies + msecs_to_jiffies(ATH11K_MON_TIMER_INTERVAL));
return 0;
}
int ath11k_dp_rx_pktlog_stop(struct ath11k_base *ab, bool stop_timer)
{
int ret;
if (stop_timer)
del_timer_sync(&ab->mon_reap_timer);
/* reap all the monitor related rings */
ret = ath11k_dp_purge_mon_ring(ab);
if (ret) {
ath11k_warn(ab, "failed to purge dp mon ring: %d\n", ret);
return ret;
}
return 0;
}