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7.2.3
linux-kernel/linux-7.2.3/drivers/net/wireless/ath/ath12k/wifi7/dp_rx.c
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lastdragon ad2088d178 Resguardo inicial
2026-09-06 12:53:21 -06:00

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// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
* Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
*/
#include "dp_rx.h"
#include "../dp_peer.h"
#include "../dp_tx.h"
#include "../peer.h"
#include "hal_qcn9274.h"
#include "hal_wcn7850.h"
#include "hal_qcc2072.h"
static u16 ath12k_wifi7_dp_rx_get_peer_id(struct ath12k_dp *dp,
enum ath12k_peer_metadata_version ver,
__le32 peer_metadata)
{
switch (ver) {
default:
ath12k_warn(dp->ab, "Unknown peer metadata version: %d", ver);
fallthrough;
case ATH12K_PEER_METADATA_V0:
return le32_get_bits(peer_metadata,
RX_MPDU_DESC_META_DATA_V0_PEER_ID);
case ATH12K_PEER_METADATA_V1:
return le32_get_bits(peer_metadata,
RX_MPDU_DESC_META_DATA_V1_PEER_ID);
case ATH12K_PEER_METADATA_V1A:
return le32_get_bits(peer_metadata,
RX_MPDU_DESC_META_DATA_V1A_PEER_ID);
case ATH12K_PEER_METADATA_V1B:
return le32_get_bits(peer_metadata,
RX_MPDU_DESC_META_DATA_V1B_PEER_ID);
}
}
void ath12k_wifi7_peer_rx_tid_qref_setup(struct ath12k_base *ab, u16 peer_id, u16 tid,
dma_addr_t paddr)
{
struct ath12k_reo_queue_ref *qref;
struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
bool ml_peer = false;
if (!ab->hw_params->reoq_lut_support)
return;
if (peer_id & ATH12K_PEER_ML_ID_VALID) {
peer_id &= ~ATH12K_PEER_ML_ID_VALID;
ml_peer = true;
}
if (ml_peer)
qref = (struct ath12k_reo_queue_ref *)dp->ml_reoq_lut.vaddr +
(peer_id * (IEEE80211_NUM_TIDS + 1) + tid);
else
qref = (struct ath12k_reo_queue_ref *)dp->reoq_lut.vaddr +
(peer_id * (IEEE80211_NUM_TIDS + 1) + tid);
qref->info0 = u32_encode_bits(lower_32_bits(paddr),
BUFFER_ADDR_INFO0_ADDR);
qref->info1 = u32_encode_bits(upper_32_bits(paddr),
BUFFER_ADDR_INFO1_ADDR) |
u32_encode_bits(tid, DP_REO_QREF_NUM);
ath12k_hal_reo_shared_qaddr_cache_clear(ab);
}
void ath12k_wifi7_peer_rx_tid_qref_reset(struct ath12k_base *ab,
u16 peer_id, u16 tid)
{
struct ath12k_reo_queue_ref *qref;
struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
bool ml_peer = false;
if (!ab->hw_params->reoq_lut_support)
return;
if (peer_id & ATH12K_PEER_ML_ID_VALID) {
peer_id &= ~ATH12K_PEER_ML_ID_VALID;
ml_peer = true;
}
if (ml_peer)
qref = (struct ath12k_reo_queue_ref *)dp->ml_reoq_lut.vaddr +
(peer_id * (IEEE80211_NUM_TIDS + 1) + tid);
else
qref = (struct ath12k_reo_queue_ref *)dp->reoq_lut.vaddr +
(peer_id * (IEEE80211_NUM_TIDS + 1) + tid);
qref->info0 = u32_encode_bits(0, BUFFER_ADDR_INFO0_ADDR);
qref->info1 = u32_encode_bits(0, BUFFER_ADDR_INFO1_ADDR) |
u32_encode_bits(tid, DP_REO_QREF_NUM);
}
void ath12k_wifi7_dp_rx_peer_tid_delete(struct ath12k_base *ab,
struct ath12k_dp_link_peer *peer, u8 tid)
{
struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
if (!(peer->rx_tid_active_bitmask & (1 << tid)))
return;
ath12k_dp_mark_tid_as_inactive(dp, peer->peer_id, tid);
ath12k_dp_rx_process_reo_cmd_update_rx_queue_list(dp);
}
int ath12k_wifi7_dp_rx_link_desc_return(struct ath12k_dp *dp,
struct ath12k_buffer_addr *buf_addr_info,
enum hal_wbm_rel_bm_act action)
{
struct ath12k_base *ab = dp->ab;
struct hal_wbm_release_ring *desc;
struct hal_srng *srng;
int ret = 0;
srng = &dp->hal->srng_list[dp->wbm_desc_rel_ring.ring_id];
spin_lock_bh(&srng->lock);
ath12k_hal_srng_access_begin(ab, srng);
desc = ath12k_hal_srng_src_get_next_entry(ab, srng);
if (!desc) {
ret = -ENOBUFS;
goto exit;
}
ath12k_wifi7_hal_rx_msdu_link_desc_set(ab, desc, buf_addr_info, action);
exit:
ath12k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
return ret;
}
int ath12k_wifi7_dp_reo_cmd_send(struct ath12k_base *ab,
struct ath12k_dp_rx_tid_rxq *rx_tid,
enum hal_reo_cmd_type type,
struct ath12k_hal_reo_cmd *cmd,
void (*cb)(struct ath12k_dp *dp, void *ctx,
enum hal_reo_cmd_status status))
{
struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
struct ath12k_dp_rx_reo_cmd *dp_cmd;
struct hal_srng *cmd_ring;
int cmd_num;
cmd_ring = &ab->hal.srng_list[dp->reo_cmd_ring.ring_id];
cmd_num = ath12k_wifi7_hal_reo_cmd_send(ab, cmd_ring, type, cmd);
/* cmd_num should start from 1, during failure return the error code */
if (cmd_num < 0)
return cmd_num;
/* reo cmd ring descriptors has cmd_num starting from 1 */
if (cmd_num == 0)
return -EINVAL;
if (!cb)
return 0;
/* Can this be optimized so that we keep the pending command list only
* for tid delete command to free up the resource on the command status
* indication?
*/
dp_cmd = kzalloc_obj(*dp_cmd, GFP_ATOMIC);
if (!dp_cmd)
return -ENOMEM;
memcpy(&dp_cmd->data, rx_tid, sizeof(*rx_tid));
dp_cmd->cmd_num = cmd_num;
dp_cmd->handler = cb;
spin_lock_bh(&dp->reo_cmd_lock);
list_add_tail(&dp_cmd->list, &dp->reo_cmd_list);
spin_unlock_bh(&dp->reo_cmd_lock);
return 0;
}
int ath12k_wifi7_peer_rx_tid_reo_update(struct ath12k_dp *dp,
struct ath12k_dp_link_peer *peer,
struct ath12k_dp_rx_tid *rx_tid,
u32 ba_win_sz, u16 ssn,
bool update_ssn)
{
struct ath12k_hal_reo_cmd cmd = {};
struct ath12k_base *ab = dp->ab;
int ret;
struct ath12k_dp_rx_tid_rxq rx_tid_rxq;
ath12k_dp_init_rx_tid_rxq(&rx_tid_rxq, rx_tid,
(peer->rx_tid_active_bitmask & (1 << rx_tid->tid)));
cmd.addr_lo = lower_32_bits(rx_tid_rxq.qbuf.paddr_aligned);
cmd.addr_hi = upper_32_bits(rx_tid_rxq.qbuf.paddr_aligned);
cmd.flag = HAL_REO_CMD_FLG_NEED_STATUS;
cmd.upd0 = HAL_REO_CMD_UPD0_BA_WINDOW_SIZE;
cmd.ba_window_size = ba_win_sz;
if (update_ssn) {
cmd.upd0 |= HAL_REO_CMD_UPD0_SSN;
cmd.upd2 = u32_encode_bits(ssn, HAL_REO_CMD_UPD2_SSN);
}
ret = ath12k_wifi7_dp_reo_cmd_send(ab, &rx_tid_rxq,
HAL_REO_CMD_UPDATE_RX_QUEUE, &cmd,
NULL);
if (ret) {
ath12k_warn(ab, "failed to update rx tid queue, tid %d (%d)\n",
rx_tid_rxq.tid, ret);
return ret;
}
rx_tid->ba_win_sz = ba_win_sz;
return 0;
}
int ath12k_wifi7_dp_reo_cache_flush(struct ath12k_base *ab,
struct ath12k_dp_rx_tid_rxq *rx_tid)
{
struct ath12k_hal_reo_cmd cmd = {};
int ret;
cmd.addr_lo = lower_32_bits(rx_tid->qbuf.paddr_aligned);
cmd.addr_hi = upper_32_bits(rx_tid->qbuf.paddr_aligned);
/* HAL_REO_CMD_FLG_FLUSH_FWD_ALL_MPDUS - all pending MPDUs
*in the bitmap will be forwarded/flushed to REO output rings
*/
cmd.flag = HAL_REO_CMD_FLG_NEED_STATUS |
HAL_REO_CMD_FLG_FLUSH_FWD_ALL_MPDUS;
/* For all QoS TIDs (except NON_QOS), the driver allocates a maximum
* window size of 1024. In such cases, the driver can issue a single
* 1KB descriptor flush command instead of sending multiple 128-byte
* flush commands for each QoS TID, improving efficiency.
*/
if (rx_tid->tid != HAL_DESC_REO_NON_QOS_TID)
cmd.flag |= HAL_REO_CMD_FLG_FLUSH_QUEUE_1K_DESC;
ret = ath12k_wifi7_dp_reo_cmd_send(ab, rx_tid,
HAL_REO_CMD_FLUSH_CACHE,
&cmd, ath12k_dp_reo_cmd_free);
return ret;
}
int ath12k_wifi7_dp_rx_assign_reoq(struct ath12k_base *ab, struct ath12k_dp_peer *dp_peer,
struct ath12k_dp_rx_tid *rx_tid,
u16 ssn, enum hal_pn_type pn_type)
{
u32 ba_win_sz = rx_tid->ba_win_sz;
struct ath12k_reoq_buf *buf;
void *vaddr, *vaddr_aligned;
dma_addr_t paddr_aligned;
u8 tid = rx_tid->tid;
u32 hw_desc_sz;
int ret;
buf = &dp_peer->reoq_bufs[tid];
if (!buf->vaddr) {
/* TODO: Optimize the memory allocation for qos tid based on
* the actual BA window size in REO tid update path.
*/
if (tid == HAL_DESC_REO_NON_QOS_TID)
hw_desc_sz = ath12k_wifi7_hal_reo_qdesc_size(ba_win_sz, tid);
else
hw_desc_sz = ath12k_wifi7_hal_reo_qdesc_size(DP_BA_WIN_SZ_MAX,
tid);
vaddr = kzalloc(hw_desc_sz + HAL_LINK_DESC_ALIGN - 1, GFP_ATOMIC);
if (!vaddr)
return -ENOMEM;
vaddr_aligned = PTR_ALIGN(vaddr, HAL_LINK_DESC_ALIGN);
ath12k_wifi7_hal_reo_qdesc_setup(vaddr_aligned, tid, ba_win_sz,
ssn, pn_type);
paddr_aligned = dma_map_single(ab->dev, vaddr_aligned, hw_desc_sz,
DMA_BIDIRECTIONAL);
ret = dma_mapping_error(ab->dev, paddr_aligned);
if (ret) {
kfree(vaddr);
return ret;
}
buf->vaddr = vaddr;
buf->paddr_aligned = paddr_aligned;
buf->size = hw_desc_sz;
}
rx_tid->qbuf = *buf;
return 0;
}
int ath12k_wifi7_dp_rx_tid_delete_handler(struct ath12k_base *ab,
struct ath12k_dp_rx_tid_rxq *rx_tid)
{
struct ath12k_hal_reo_cmd cmd = {};
cmd.flag = HAL_REO_CMD_FLG_NEED_STATUS;
cmd.addr_lo = lower_32_bits(rx_tid->qbuf.paddr_aligned);
cmd.addr_hi = upper_32_bits(rx_tid->qbuf.paddr_aligned);
cmd.upd0 |= HAL_REO_CMD_UPD0_VLD;
/* Observed flush cache failure, to avoid that set vld bit during delete */
cmd.upd1 |= HAL_REO_CMD_UPD1_VLD;
return ath12k_wifi7_dp_reo_cmd_send(ab, rx_tid,
HAL_REO_CMD_UPDATE_RX_QUEUE, &cmd,
ath12k_dp_rx_tid_del_func);
}
static void ath12k_wifi7_dp_rx_h_csum_offload(struct sk_buff *msdu,
struct hal_rx_desc_data *rx_info)
{
msdu->ip_summed = (rx_info->ip_csum_fail || rx_info->l4_csum_fail) ?
CHECKSUM_NONE : CHECKSUM_UNNECESSARY;
}
static int ath12k_wifi7_dp_rx_h_mpdu(struct ath12k_pdev_dp *dp_pdev,
struct sk_buff *msdu,
struct hal_rx_desc_data *rx_info)
{
struct ath12k_skb_rxcb *rxcb;
enum hal_encrypt_type enctype;
bool is_decrypted = false;
struct ieee80211_hdr *hdr;
struct ath12k_dp_peer *peer;
struct ieee80211_rx_status *rx_status = rx_info->rx_status;
u32 err_bitmap = rx_info->err_bitmap;
RCU_LOCKDEP_WARN(!rcu_read_lock_held(),
"dp_rx_h_mpdu called without rcu lock");
/* PN for multicast packets will be checked in mac80211 */
rxcb = ATH12K_SKB_RXCB(msdu);
rxcb->is_mcbc = rx_info->is_mcbc;
if (rxcb->is_mcbc)
rxcb->peer_id = rx_info->peer_id;
peer = ath12k_dp_peer_find_by_peerid(dp_pdev, rxcb->peer_id);
if (peer) {
/*
* Drop the 3-address multicast packet from 4-address
* peer To avoid receiving the duplicate multicast packet
* Specifically from AP interface in 3-address format
*/
if (rxcb->is_mcbc &&
rx_info->decap_type == DP_RX_DECAP_TYPE_ETHERNET2_DIX) {
if (peer->use_4addr &&
!(rx_info->is_from_ds && rx_info->is_to_ds))
return -EINVAL;
}
/* resetting mcbc bit because mcbc packets are unicast
* packets only for AP as STA sends unicast packets.
*/
rxcb->is_mcbc = rxcb->is_mcbc && !peer->ucast_ra_only;
if (rxcb->is_mcbc)
enctype = peer->sec_type_grp;
else
enctype = peer->sec_type;
} else {
enctype = HAL_ENCRYPT_TYPE_OPEN;
}
if (enctype != HAL_ENCRYPT_TYPE_OPEN && !err_bitmap)
is_decrypted = rx_info->is_decrypted;
/* Clear per-MPDU flags while leaving per-PPDU flags intact */
rx_status->flag &= ~(RX_FLAG_FAILED_FCS_CRC |
RX_FLAG_MMIC_ERROR |
RX_FLAG_DECRYPTED |
RX_FLAG_IV_STRIPPED |
RX_FLAG_MMIC_STRIPPED);
if (err_bitmap & HAL_RX_MPDU_ERR_FCS)
rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
if (err_bitmap & HAL_RX_MPDU_ERR_TKIP_MIC)
rx_status->flag |= RX_FLAG_MMIC_ERROR;
if (is_decrypted) {
rx_status->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MMIC_STRIPPED;
if (rx_info->is_mcbc)
rx_status->flag |= RX_FLAG_MIC_STRIPPED |
RX_FLAG_ICV_STRIPPED;
else
rx_status->flag |= RX_FLAG_IV_STRIPPED |
RX_FLAG_PN_VALIDATED;
}
ath12k_wifi7_dp_rx_h_csum_offload(msdu, rx_info);
ath12k_dp_rx_h_undecap(dp_pdev, msdu, enctype, is_decrypted, rx_info,
peer);
if (!is_decrypted || rx_info->is_mcbc)
return 0;
if (rx_info->decap_type != DP_RX_DECAP_TYPE_ETHERNET2_DIX) {
hdr = (void *)msdu->data;
hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
}
return 0;
}
static int ath12k_wifi7_dp_rx_msdu_coalesce(struct ath12k_hal *hal,
struct sk_buff_head *msdu_list,
struct sk_buff *first, struct sk_buff *last,
u8 l3pad_bytes, int msdu_len,
struct hal_rx_desc_data *rx_info)
{
struct sk_buff *skb;
struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(first);
int buf_first_hdr_len, buf_first_len;
struct hal_rx_desc *ldesc;
int space_extra, rem_len, buf_len;
u32 hal_rx_desc_sz = hal->hal_desc_sz;
bool is_continuation;
/* As the msdu is spread across multiple rx buffers,
* find the offset to the start of msdu for computing
* the length of the msdu in the first buffer.
*/
buf_first_hdr_len = hal_rx_desc_sz + l3pad_bytes;
buf_first_len = DP_RX_BUFFER_SIZE - buf_first_hdr_len;
if (WARN_ON_ONCE(msdu_len <= buf_first_len)) {
skb_put(first, buf_first_hdr_len + msdu_len);
skb_pull(first, buf_first_hdr_len);
return 0;
}
ldesc = (struct hal_rx_desc *)last->data;
rxcb->is_first_msdu = rx_info->is_first_msdu;
rxcb->is_last_msdu = rx_info->is_last_msdu;
/* MSDU spans over multiple buffers because the length of the MSDU
* exceeds DP_RX_BUFFER_SIZE - HAL_RX_DESC_SIZE. So assume the data
* in the first buf is of length DP_RX_BUFFER_SIZE - HAL_RX_DESC_SIZE.
*/
skb_put(first, DP_RX_BUFFER_SIZE);
skb_pull(first, buf_first_hdr_len);
/* When an MSDU spread over multiple buffers MSDU_END
* tlvs are valid only in the last buffer. Copy those tlvs.
*/
ath12k_dp_rx_desc_end_tlv_copy(hal, rxcb->rx_desc, ldesc);
space_extra = msdu_len - (buf_first_len + skb_tailroom(first));
if (space_extra > 0 &&
(pskb_expand_head(first, 0, space_extra, GFP_ATOMIC) < 0)) {
/* Free up all buffers of the MSDU */
while ((skb = __skb_dequeue(msdu_list)) != NULL) {
rxcb = ATH12K_SKB_RXCB(skb);
if (!rxcb->is_continuation) {
dev_kfree_skb_any(skb);
break;
}
dev_kfree_skb_any(skb);
}
return -ENOMEM;
}
rem_len = msdu_len - buf_first_len;
while ((skb = __skb_dequeue(msdu_list)) != NULL && rem_len > 0) {
rxcb = ATH12K_SKB_RXCB(skb);
is_continuation = rxcb->is_continuation;
if (is_continuation)
buf_len = DP_RX_BUFFER_SIZE - hal_rx_desc_sz;
else
buf_len = rem_len;
if (buf_len > (DP_RX_BUFFER_SIZE - hal_rx_desc_sz)) {
WARN_ON_ONCE(1);
dev_kfree_skb_any(skb);
return -EINVAL;
}
skb_put(skb, buf_len + hal_rx_desc_sz);
skb_pull(skb, hal_rx_desc_sz);
skb_copy_from_linear_data(skb, skb_put(first, buf_len),
buf_len);
dev_kfree_skb_any(skb);
rem_len -= buf_len;
if (!is_continuation)
break;
}
return 0;
}
static int ath12k_wifi7_dp_rx_process_msdu(struct ath12k_pdev_dp *dp_pdev,
struct sk_buff *msdu,
struct sk_buff_head *msdu_list,
struct hal_rx_desc_data *rx_info)
{
struct ath12k_dp *dp = dp_pdev->dp;
struct hal_rx_desc *rx_desc, *lrx_desc;
struct ath12k_skb_rxcb *rxcb;
struct sk_buff *last_buf;
struct ath12k_hal *hal = dp->hal;
u8 l3_pad_bytes;
u16 msdu_len;
int ret;
u32 hal_rx_desc_sz = hal->hal_desc_sz;
last_buf = ath12k_dp_rx_get_msdu_last_buf(msdu_list, msdu);
if (!last_buf) {
ath12k_warn(dp->ab,
"No valid Rx buffer to access MSDU_END tlv\n");
ret = -EIO;
goto free_out;
}
rx_desc = (struct hal_rx_desc *)msdu->data;
lrx_desc = (struct hal_rx_desc *)last_buf->data;
ath12k_dp_extract_rx_desc_data(hal, rx_info, rx_desc, lrx_desc);
if (!rx_info->msdu_done) {
ath12k_warn(dp->ab, "msdu_done bit in msdu_end is not set\n");
ret = -EIO;
goto free_out;
}
rxcb = ATH12K_SKB_RXCB(msdu);
rxcb->rx_desc = rx_desc;
msdu_len = rx_info->msdu_len;
l3_pad_bytes = rx_info->l3_pad_bytes;
if (rxcb->is_frag) {
skb_pull(msdu, hal_rx_desc_sz);
} else if (!rxcb->is_continuation) {
if ((msdu_len + hal_rx_desc_sz) > DP_RX_BUFFER_SIZE) {
ret = -EINVAL;
ath12k_warn(dp->ab, "invalid msdu len %u\n", msdu_len);
ath12k_dbg_dump(dp->ab, ATH12K_DBG_DATA, NULL, "", rx_desc,
sizeof(*rx_desc));
goto free_out;
}
skb_put(msdu, hal_rx_desc_sz + l3_pad_bytes + msdu_len);
skb_pull(msdu, hal_rx_desc_sz + l3_pad_bytes);
} else {
ret = ath12k_wifi7_dp_rx_msdu_coalesce(hal, msdu_list,
msdu, last_buf,
l3_pad_bytes, msdu_len,
rx_info);
if (ret) {
ath12k_warn(dp->ab,
"failed to coalesce msdu rx buffer%d\n", ret);
goto free_out;
}
}
if (unlikely(!ath12k_dp_rx_check_nwifi_hdr_len_valid(dp, msdu,
rx_info))) {
ret = -EINVAL;
goto free_out;
}
ath12k_dp_rx_h_ppdu(dp_pdev, rx_info);
ret = ath12k_wifi7_dp_rx_h_mpdu(dp_pdev, msdu, rx_info);
if (ret)
goto free_out;
rx_info->rx_status->flag |= RX_FLAG_SKIP_MONITOR | RX_FLAG_DUP_VALIDATED;
return 0;
free_out:
return ret;
}
static void
ath12k_wifi7_dp_rx_process_received_packets(struct ath12k_dp *dp,
struct napi_struct *napi,
struct sk_buff_head *msdu_list,
int ring_id)
{
struct ath12k_hw_group *ag = dp->ag;
struct ath12k_dp_hw_group *dp_hw_grp = &ag->dp_hw_grp;
struct ieee80211_rx_status rx_status = {};
struct ath12k_skb_rxcb *rxcb;
struct sk_buff *msdu;
struct ath12k *ar;
struct ath12k_pdev_dp *dp_pdev;
struct ath12k_hw_link *hw_links = ag->hw_links;
struct ath12k_base *partner_ab;
struct hal_rx_desc_data rx_info;
struct ath12k_dp *partner_dp;
u8 hw_link_id, pdev_idx;
int ret;
if (skb_queue_empty(msdu_list))
return;
rx_info.addr2_present = false;
rx_info.rx_status = &rx_status;
rcu_read_lock();
while ((msdu = __skb_dequeue(msdu_list))) {
rxcb = ATH12K_SKB_RXCB(msdu);
hw_link_id = rxcb->hw_link_id;
partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp,
hw_links[hw_link_id].device_id);
pdev_idx = ath12k_hw_mac_id_to_pdev_id(partner_dp->hw_params,
hw_links[hw_link_id].pdev_idx);
partner_ab = partner_dp->ab;
ar = partner_ab->pdevs[pdev_idx].ar;
if (!rcu_dereference(partner_ab->pdevs_active[pdev_idx])) {
dev_kfree_skb_any(msdu);
continue;
}
if (test_bit(ATH12K_FLAG_CAC_RUNNING, &ar->dev_flags)) {
dev_kfree_skb_any(msdu);
continue;
}
dp_pdev = ath12k_dp_to_pdev_dp(partner_dp, pdev_idx);
if (!dp_pdev) {
dev_kfree_skb_any(msdu);
continue;
}
ret = ath12k_wifi7_dp_rx_process_msdu(dp_pdev, msdu, msdu_list, &rx_info);
if (ret) {
ath12k_dbg(dp->ab, ATH12K_DBG_DATA,
"Unable to process msdu %d", ret);
dev_kfree_skb_any(msdu);
continue;
}
ath12k_dp_rx_deliver_msdu(dp_pdev, napi, msdu, &rx_info);
}
rcu_read_unlock();
}
int ath12k_wifi7_dp_rx_process(struct ath12k_dp *dp, int ring_id,
struct napi_struct *napi, int budget)
{
struct ath12k_hw_group *ag = dp->ag;
struct ath12k_base *ab = dp->ab;
struct ath12k_hal *hal = dp->hal;
struct ath12k_dp_hw_group *dp_hw_grp = &ag->dp_hw_grp;
struct list_head rx_desc_used_list[ATH12K_MAX_DEVICES];
struct ath12k_hw_link *hw_links = ag->hw_links;
int num_buffs_reaped[ATH12K_MAX_DEVICES] = {};
struct ath12k_rx_desc_info *desc_info;
struct dp_rxdma_ring *rx_ring = &dp->rx_refill_buf_ring;
struct hal_reo_dest_ring *desc;
struct ath12k_dp *partner_dp;
struct sk_buff_head msdu_list;
struct ath12k_skb_rxcb *rxcb;
int total_msdu_reaped = 0;
u8 hw_link_id, device_id;
struct hal_srng *srng;
struct sk_buff *msdu;
bool done = false;
u64 desc_va;
__skb_queue_head_init(&msdu_list);
for (device_id = 0; device_id < ATH12K_MAX_DEVICES; device_id++)
INIT_LIST_HEAD(&rx_desc_used_list[device_id]);
srng = &hal->srng_list[dp->reo_dst_ring[ring_id].ring_id];
spin_lock_bh(&srng->lock);
try_again:
ath12k_hal_srng_access_begin(ab, srng);
while ((desc = ath12k_hal_srng_dst_get_next_entry(ab, srng))) {
struct rx_mpdu_desc *mpdu_info;
struct rx_msdu_desc *msdu_info;
enum hal_reo_dest_ring_push_reason push_reason;
u32 cookie;
cookie = le32_get_bits(desc->buf_addr_info.info1,
BUFFER_ADDR_INFO1_SW_COOKIE);
hw_link_id = le32_get_bits(desc->info0,
HAL_REO_DEST_RING_INFO0_SRC_LINK_ID);
desc_va = ((u64)le32_to_cpu(desc->buf_va_hi) << 32 |
le32_to_cpu(desc->buf_va_lo));
desc_info = (struct ath12k_rx_desc_info *)((unsigned long)desc_va);
device_id = hw_links[hw_link_id].device_id;
partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
if (unlikely(!partner_dp)) {
if (desc_info->skb) {
dev_kfree_skb_any(desc_info->skb);
desc_info->skb = NULL;
}
continue;
}
/* retry manual desc retrieval */
if (!desc_info) {
desc_info = ath12k_dp_get_rx_desc(partner_dp, cookie);
if (!desc_info) {
ath12k_warn(partner_dp->ab, "Invalid cookie in manual descriptor retrieval: 0x%x\n",
cookie);
continue;
}
}
if (desc_info->magic != ATH12K_DP_RX_DESC_MAGIC)
ath12k_warn(ab, "Check HW CC implementation");
msdu = desc_info->skb;
desc_info->skb = NULL;
list_add_tail(&desc_info->list, &rx_desc_used_list[device_id]);
rxcb = ATH12K_SKB_RXCB(msdu);
dma_unmap_single(partner_dp->dev, rxcb->paddr,
msdu->len + skb_tailroom(msdu),
DMA_FROM_DEVICE);
num_buffs_reaped[device_id]++;
dp->device_stats.reo_rx[ring_id][dp->device_id]++;
push_reason = le32_get_bits(desc->info0,
HAL_REO_DEST_RING_INFO0_PUSH_REASON);
if (push_reason !=
HAL_REO_DEST_RING_PUSH_REASON_ROUTING_INSTRUCTION) {
dev_kfree_skb_any(msdu);
dp->device_stats.hal_reo_error[ring_id]++;
continue;
}
msdu_info = &desc->rx_msdu_info;
mpdu_info = &desc->rx_mpdu_info;
rxcb->is_first_msdu = !!(le32_to_cpu(msdu_info->info0) &
RX_MSDU_DESC_INFO0_FIRST_MSDU_IN_MPDU);
rxcb->is_last_msdu = !!(le32_to_cpu(msdu_info->info0) &
RX_MSDU_DESC_INFO0_LAST_MSDU_IN_MPDU);
rxcb->is_continuation = !!(le32_to_cpu(msdu_info->info0) &
RX_MSDU_DESC_INFO0_MSDU_CONTINUATION);
rxcb->hw_link_id = hw_link_id;
rxcb->peer_id = ath12k_wifi7_dp_rx_get_peer_id(dp, dp->peer_metadata_ver,
mpdu_info->peer_meta_data);
rxcb->tid = le32_get_bits(mpdu_info->info0,
RX_MPDU_DESC_INFO0_TID);
__skb_queue_tail(&msdu_list, msdu);
if (!rxcb->is_continuation) {
total_msdu_reaped++;
done = true;
} else {
done = false;
}
if (total_msdu_reaped >= budget)
break;
}
/* Hw might have updated the head pointer after we cached it.
* In this case, even though there are entries in the ring we'll
* get rx_desc NULL. Give the read another try with updated cached
* head pointer so that we can reap complete MPDU in the current
* rx processing.
*/
if (!done && ath12k_hal_srng_dst_num_free(ab, srng, true)) {
ath12k_hal_srng_access_end(ab, srng);
goto try_again;
}
ath12k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
if (!total_msdu_reaped)
goto exit;
for (device_id = 0; device_id < ATH12K_MAX_DEVICES; device_id++) {
if (!num_buffs_reaped[device_id])
continue;
partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
rx_ring = &partner_dp->rx_refill_buf_ring;
ath12k_dp_rx_bufs_replenish(partner_dp, rx_ring,
&rx_desc_used_list[device_id],
num_buffs_reaped[device_id]);
}
ath12k_wifi7_dp_rx_process_received_packets(dp, napi, &msdu_list,
ring_id);
exit:
return total_msdu_reaped;
}
static bool
ath12k_wifi7_dp_rx_h_defrag_validate_incr_pn(struct ath12k_pdev_dp *dp_pdev,
struct ath12k_dp_rx_tid *rx_tid,
enum hal_encrypt_type encrypt_type)
{
struct ath12k_dp *dp = dp_pdev->dp;
struct sk_buff *first_frag, *skb;
u64 last_pn;
u64 cur_pn;
first_frag = skb_peek(&rx_tid->rx_frags);
if (encrypt_type != HAL_ENCRYPT_TYPE_CCMP_128 &&
encrypt_type != HAL_ENCRYPT_TYPE_CCMP_256 &&
encrypt_type != HAL_ENCRYPT_TYPE_GCMP_128 &&
encrypt_type != HAL_ENCRYPT_TYPE_AES_GCMP_256)
return true;
last_pn = ath12k_dp_rx_h_get_pn(dp, first_frag);
skb_queue_walk(&rx_tid->rx_frags, skb) {
if (skb == first_frag)
continue;
cur_pn = ath12k_dp_rx_h_get_pn(dp, skb);
if (cur_pn != last_pn + 1)
return false;
last_pn = cur_pn;
}
return true;
}
static int ath12k_wifi7_dp_rx_h_defrag_reo_reinject(struct ath12k_dp *dp,
struct ath12k_dp_rx_tid *rx_tid,
struct sk_buff *defrag_skb)
{
struct ath12k_base *ab = dp->ab;
struct ath12k_hal *hal = dp->hal;
struct hal_rx_desc *rx_desc = (struct hal_rx_desc *)defrag_skb->data;
struct hal_reo_entrance_ring *reo_ent_ring;
struct hal_reo_dest_ring *reo_dest_ring;
struct dp_link_desc_bank *link_desc_banks;
struct hal_rx_msdu_link *msdu_link;
struct hal_rx_msdu_details *msdu0;
struct hal_srng *srng;
dma_addr_t link_paddr, buf_paddr;
u32 desc_bank, msdu_info, msdu_ext_info, mpdu_info;
u32 cookie, hal_rx_desc_sz, dest_ring_info0, queue_addr_hi;
int ret;
struct ath12k_rx_desc_info *desc_info;
enum hal_rx_buf_return_buf_manager idle_link_rbm = dp->idle_link_rbm;
u8 dst_ind;
hal_rx_desc_sz = hal->hal_desc_sz;
link_desc_banks = dp->link_desc_banks;
reo_dest_ring = rx_tid->dst_ring_desc;
ath12k_wifi7_hal_rx_reo_ent_paddr_get(&reo_dest_ring->buf_addr_info,
&link_paddr, &cookie);
desc_bank = u32_get_bits(cookie, DP_LINK_DESC_BANK_MASK);
msdu_link = (struct hal_rx_msdu_link *)(link_desc_banks[desc_bank].vaddr +
(link_paddr - link_desc_banks[desc_bank].paddr));
msdu0 = &msdu_link->msdu_link[0];
msdu_ext_info = le32_to_cpu(msdu0->rx_msdu_ext_info.info0);
dst_ind = u32_get_bits(msdu_ext_info, RX_MSDU_EXT_DESC_INFO0_REO_DEST_IND);
memset(msdu0, 0, sizeof(*msdu0));
msdu_info = u32_encode_bits(1, RX_MSDU_DESC_INFO0_FIRST_MSDU_IN_MPDU) |
u32_encode_bits(1, RX_MSDU_DESC_INFO0_LAST_MSDU_IN_MPDU) |
u32_encode_bits(0, RX_MSDU_DESC_INFO0_MSDU_CONTINUATION) |
u32_encode_bits(defrag_skb->len - hal_rx_desc_sz,
RX_MSDU_DESC_INFO0_MSDU_LENGTH) |
u32_encode_bits(1, RX_MSDU_DESC_INFO0_VALID_SA) |
u32_encode_bits(1, RX_MSDU_DESC_INFO0_VALID_DA);
msdu0->rx_msdu_info.info0 = cpu_to_le32(msdu_info);
msdu0->rx_msdu_ext_info.info0 = cpu_to_le32(msdu_ext_info);
/* change msdu len in hal rx desc */
ath12k_dp_rxdesc_set_msdu_len(hal, rx_desc, defrag_skb->len - hal_rx_desc_sz);
buf_paddr = dma_map_single(dp->dev, defrag_skb->data,
defrag_skb->len + skb_tailroom(defrag_skb),
DMA_TO_DEVICE);
if (dma_mapping_error(dp->dev, buf_paddr))
return -ENOMEM;
spin_lock_bh(&dp->rx_desc_lock);
desc_info = list_first_entry_or_null(&dp->rx_desc_free_list,
struct ath12k_rx_desc_info,
list);
if (!desc_info) {
spin_unlock_bh(&dp->rx_desc_lock);
ath12k_warn(ab, "failed to find rx desc for reinject\n");
ret = -ENOMEM;
goto err_unmap_dma;
}
desc_info->skb = defrag_skb;
desc_info->in_use = true;
list_del(&desc_info->list);
spin_unlock_bh(&dp->rx_desc_lock);
ATH12K_SKB_RXCB(defrag_skb)->paddr = buf_paddr;
ath12k_wifi7_hal_rx_buf_addr_info_set(&msdu0->buf_addr_info, buf_paddr,
desc_info->cookie,
HAL_RX_BUF_RBM_SW3_BM);
/* Fill mpdu details into reo entrance ring */
srng = &hal->srng_list[dp->reo_reinject_ring.ring_id];
spin_lock_bh(&srng->lock);
ath12k_hal_srng_access_begin(ab, srng);
reo_ent_ring = ath12k_hal_srng_src_get_next_entry(ab, srng);
if (!reo_ent_ring) {
ath12k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
ret = -ENOSPC;
goto err_free_desc;
}
memset(reo_ent_ring, 0, sizeof(*reo_ent_ring));
ath12k_wifi7_hal_rx_buf_addr_info_set(&reo_ent_ring->buf_addr_info, link_paddr,
cookie, idle_link_rbm);
mpdu_info = u32_encode_bits(1, RX_MPDU_DESC_INFO0_MSDU_COUNT) |
u32_encode_bits(0, RX_MPDU_DESC_INFO0_FRAG_FLAG) |
u32_encode_bits(1, RX_MPDU_DESC_INFO0_RAW_MPDU) |
u32_encode_bits(1, RX_MPDU_DESC_INFO0_VALID_PN) |
u32_encode_bits(rx_tid->tid, RX_MPDU_DESC_INFO0_TID);
reo_ent_ring->rx_mpdu_info.info0 = cpu_to_le32(mpdu_info);
reo_ent_ring->rx_mpdu_info.peer_meta_data =
reo_dest_ring->rx_mpdu_info.peer_meta_data;
if (dp->hw_params->reoq_lut_support) {
reo_ent_ring->queue_addr_lo = reo_dest_ring->rx_mpdu_info.peer_meta_data;
queue_addr_hi = 0;
} else {
reo_ent_ring->queue_addr_lo =
cpu_to_le32(lower_32_bits(rx_tid->qbuf.paddr_aligned));
queue_addr_hi = upper_32_bits(rx_tid->qbuf.paddr_aligned);
}
reo_ent_ring->info0 = le32_encode_bits(queue_addr_hi,
HAL_REO_ENTR_RING_INFO0_QUEUE_ADDR_HI) |
le32_encode_bits(dst_ind,
HAL_REO_ENTR_RING_INFO0_DEST_IND);
reo_ent_ring->info1 = le32_encode_bits(rx_tid->cur_sn,
HAL_REO_ENTR_RING_INFO1_MPDU_SEQ_NUM);
dest_ring_info0 = le32_get_bits(reo_dest_ring->info0,
HAL_REO_DEST_RING_INFO0_SRC_LINK_ID);
reo_ent_ring->info2 =
cpu_to_le32(u32_get_bits(dest_ring_info0,
HAL_REO_ENTR_RING_INFO2_SRC_LINK_ID));
ath12k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
return 0;
err_free_desc:
spin_lock_bh(&dp->rx_desc_lock);
desc_info->in_use = false;
desc_info->skb = NULL;
list_add_tail(&desc_info->list, &dp->rx_desc_free_list);
spin_unlock_bh(&dp->rx_desc_lock);
err_unmap_dma:
dma_unmap_single(dp->dev, buf_paddr, defrag_skb->len + skb_tailroom(defrag_skb),
DMA_TO_DEVICE);
return ret;
}
static int ath12k_wifi7_dp_rx_h_verify_tkip_mic(struct ath12k_pdev_dp *dp_pdev,
struct ath12k_dp_peer *peer,
enum hal_encrypt_type enctype,
struct sk_buff *msdu,
struct hal_rx_desc_data *rx_info)
{
struct ath12k_dp *dp = dp_pdev->dp;
struct ath12k_hal *hal = dp->hal;
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;
size_t data_len;
u32 hdr_len, hal_rx_desc_sz = hal->hal_desc_sz;
u8 *key, *data;
u8 key_idx;
if (enctype != HAL_ENCRYPT_TYPE_TKIP_MIC)
return 0;
rx_info->addr2_present = false;
rx_info->rx_status = rxs;
hdr = (struct ieee80211_hdr *)(msdu->data + hal_rx_desc_sz);
hdr_len = ieee80211_hdrlen(hdr->frame_control);
head_len = hdr_len + hal_rx_desc_sz + IEEE80211_TKIP_IV_LEN;
tail_len = IEEE80211_CCMP_MIC_LEN + IEEE80211_TKIP_ICV_LEN + FCS_LEN;
if (!is_multicast_ether_addr(hdr->addr1))
key_idx = peer->ucast_keyidx;
else
key_idx = peer->mcast_keyidx;
key_conf = peer->keys[key_idx];
data = msdu->data + head_len;
data_len = msdu->len - head_len - tail_len;
key = &key_conf->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY];
michael_mic(key, hdr, data, data_len, mic);
if (memcmp(mic, data + data_len, IEEE80211_CCMP_MIC_LEN))
goto mic_fail;
return 0;
mic_fail:
(ATH12K_SKB_RXCB(msdu))->is_first_msdu = true;
(ATH12K_SKB_RXCB(msdu))->is_last_msdu = true;
ath12k_dp_extract_rx_desc_data(hal, rx_info, rx_desc, rx_desc);
rxs->flag |= RX_FLAG_MMIC_ERROR | RX_FLAG_MMIC_STRIPPED |
RX_FLAG_IV_STRIPPED | RX_FLAG_DECRYPTED;
skb_pull(msdu, hal_rx_desc_sz);
if (unlikely(!ath12k_dp_rx_check_nwifi_hdr_len_valid(dp, msdu,
rx_info))) {
dev_kfree_skb_any(msdu);
return -EINVAL;
}
ath12k_dp_rx_h_ppdu(dp_pdev, rx_info);
ath12k_dp_rx_h_undecap(dp_pdev, msdu, HAL_ENCRYPT_TYPE_TKIP_MIC, true,
rx_info, NULL);
ieee80211_rx(ath12k_pdev_dp_to_hw(dp_pdev), msdu);
return -EINVAL;
}
static int ath12k_wifi7_dp_rx_h_defrag(struct ath12k_pdev_dp *dp_pdev,
struct ath12k_dp_peer *peer,
struct ath12k_dp_rx_tid *rx_tid,
struct sk_buff **defrag_skb,
enum hal_encrypt_type enctype,
struct hal_rx_desc_data *rx_info)
{
struct ath12k_dp *dp = dp_pdev->dp;
struct ath12k_base *ab = dp->ab;
struct sk_buff *skb, *first_frag, *last_frag;
struct ieee80211_hdr *hdr;
bool is_decrypted = false;
int msdu_len = 0;
int extra_space;
u32 flags, hal_rx_desc_sz = ab->hal.hal_desc_sz;
first_frag = skb_peek(&rx_tid->rx_frags);
last_frag = skb_peek_tail(&rx_tid->rx_frags);
skb_queue_walk(&rx_tid->rx_frags, skb) {
flags = 0;
hdr = (struct ieee80211_hdr *)(skb->data + hal_rx_desc_sz);
if (enctype != HAL_ENCRYPT_TYPE_OPEN)
is_decrypted = rx_info->is_decrypted;
if (is_decrypted) {
if (skb != first_frag)
flags |= RX_FLAG_IV_STRIPPED;
if (skb != last_frag)
flags |= RX_FLAG_ICV_STRIPPED |
RX_FLAG_MIC_STRIPPED;
}
/* RX fragments are always raw packets */
if (skb != last_frag)
skb_trim(skb, skb->len - FCS_LEN);
ath12k_dp_rx_h_undecap_frag(dp_pdev, skb, enctype, flags);
if (skb != first_frag)
skb_pull(skb, hal_rx_desc_sz +
ieee80211_hdrlen(hdr->frame_control));
msdu_len += skb->len;
}
extra_space = msdu_len - (DP_RX_BUFFER_SIZE + skb_tailroom(first_frag));
if (extra_space > 0 &&
(pskb_expand_head(first_frag, 0, extra_space, GFP_ATOMIC) < 0))
return -ENOMEM;
__skb_unlink(first_frag, &rx_tid->rx_frags);
while ((skb = __skb_dequeue(&rx_tid->rx_frags))) {
skb_put_data(first_frag, skb->data, skb->len);
dev_kfree_skb_any(skb);
}
hdr = (struct ieee80211_hdr *)(first_frag->data + hal_rx_desc_sz);
hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_MOREFRAGS);
ATH12K_SKB_RXCB(first_frag)->is_frag = 1;
if (ath12k_wifi7_dp_rx_h_verify_tkip_mic(dp_pdev, peer, enctype, first_frag,
rx_info))
first_frag = NULL;
*defrag_skb = first_frag;
return 0;
}
void ath12k_wifi7_dp_rx_frags_cleanup(struct ath12k_dp_rx_tid *rx_tid,
bool rel_link_desc)
{
enum hal_wbm_rel_bm_act act = HAL_WBM_REL_BM_ACT_PUT_IN_IDLE;
struct ath12k_buffer_addr *buf_addr_info;
struct ath12k_dp *dp = rx_tid->dp;
lockdep_assert_held(&dp->dp_lock);
if (rx_tid->dst_ring_desc) {
if (rel_link_desc) {
buf_addr_info = &rx_tid->dst_ring_desc->buf_addr_info;
ath12k_wifi7_dp_rx_link_desc_return(dp, buf_addr_info, act);
}
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);
}
static int ath12k_wifi7_dp_rx_frag_h_mpdu(struct ath12k_pdev_dp *dp_pdev,
struct sk_buff *msdu,
struct hal_reo_dest_ring *ring_desc,
struct hal_rx_desc_data *rx_info)
{
struct ath12k_dp *dp = dp_pdev->dp;
struct ath12k_hal *hal = dp->hal;
struct ath12k_base *ab = dp->ab;
struct ath12k_dp_peer *peer;
struct ath12k_dp_rx_tid *rx_tid;
struct sk_buff *defrag_skb = NULL;
u32 peer_id = rx_info->peer_id;
u16 seqno, frag_no;
u8 tid = rx_info->tid;
int ret = 0;
bool more_frags;
enum hal_encrypt_type enctype = rx_info->enctype;
frag_no = ath12k_dp_rx_h_frag_no(hal, msdu);
more_frags = ath12k_dp_rx_h_more_frags(hal, msdu);
seqno = rx_info->seq_no;
if (!rx_info->seq_ctl_valid || !rx_info->fc_valid ||
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(&dp->dp_lock);
peer = ath12k_dp_peer_find_by_peerid(dp_pdev, peer_id);
if (!peer) {
ath12k_warn(ab, "failed to find the peer to de-fragment received fragment peer_id %d\n",
peer_id);
ret = -ENOENT;
goto out_unlock;
}
if (!peer->dp_setup_done) {
ath12k_warn(ab, "The peer %pM [%d] has uninitialized datapath\n",
peer->addr, peer_id);
ret = -ENOENT;
goto out_unlock;
}
rx_tid = &peer->rx_tid[tid];
if ((!skb_queue_empty(&rx_tid->rx_frags) && seqno != rx_tid->cur_sn) ||
skb_queue_empty(&rx_tid->rx_frags)) {
/* Flush stored fragments and start a new sequence */
ath12k_wifi7_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 ((!rx_tid->rx_frag_bitmap || frag_no > __fls(rx_tid->rx_frag_bitmap)))
__skb_queue_tail(&rx_tid->rx_frags, msdu);
else
ath12k_dp_rx_h_sort_frags(hal, &rx_tid->rx_frags, msdu);
rx_tid->rx_frag_bitmap |= BIT(frag_no);
if (!more_frags)
rx_tid->last_frag_no = frag_no;
if (frag_no == 0) {
rx_tid->dst_ring_desc = kmemdup(ring_desc,
sizeof(*rx_tid->dst_ring_desc),
GFP_ATOMIC);
if (!rx_tid->dst_ring_desc) {
ret = -ENOMEM;
goto out_unlock;
}
} else {
ath12k_wifi7_dp_rx_link_desc_return(dp, &ring_desc->buf_addr_info,
HAL_WBM_REL_BM_ACT_PUT_IN_IDLE);
}
if (!rx_tid->last_frag_no ||
rx_tid->rx_frag_bitmap != GENMASK(rx_tid->last_frag_no, 0)) {
mod_timer(&rx_tid->frag_timer, jiffies +
ATH12K_DP_RX_FRAGMENT_TIMEOUT_MS);
goto out_unlock;
}
spin_unlock_bh(&dp->dp_lock);
timer_delete_sync(&rx_tid->frag_timer);
spin_lock_bh(&dp->dp_lock);
peer = ath12k_dp_peer_find_by_peerid(dp_pdev, peer_id);
if (!peer)
goto err_frags_cleanup;
if (!ath12k_wifi7_dp_rx_h_defrag_validate_incr_pn(dp_pdev, rx_tid, enctype))
goto err_frags_cleanup;
if (ath12k_wifi7_dp_rx_h_defrag(dp_pdev, peer, rx_tid, &defrag_skb,
enctype, rx_info))
goto err_frags_cleanup;
if (!defrag_skb)
goto err_frags_cleanup;
if (ath12k_wifi7_dp_rx_h_defrag_reo_reinject(dp, rx_tid, defrag_skb))
goto err_frags_cleanup;
ath12k_wifi7_dp_rx_frags_cleanup(rx_tid, false);
goto out_unlock;
err_frags_cleanup:
dev_kfree_skb_any(defrag_skb);
ath12k_wifi7_dp_rx_frags_cleanup(rx_tid, true);
out_unlock:
spin_unlock_bh(&dp->dp_lock);
return ret;
}
static int
ath12k_wifi7_dp_process_rx_err_buf(struct ath12k_pdev_dp *dp_pdev,
struct hal_reo_dest_ring *desc,
struct list_head *used_list,
bool drop, u32 cookie)
{
struct ath12k *ar = ath12k_pdev_dp_to_ar(dp_pdev);
struct ath12k_dp *dp = dp_pdev->dp;
struct ath12k_hal *hal = dp->hal;
struct sk_buff *msdu;
struct ath12k_skb_rxcb *rxcb;
struct hal_rx_desc_data rx_info;
struct hal_rx_desc *rx_desc;
u16 msdu_len;
u32 hal_rx_desc_sz = hal->hal_desc_sz;
struct ath12k_rx_desc_info *desc_info;
u64 desc_va;
desc_va = ((u64)le32_to_cpu(desc->buf_va_hi) << 32 |
le32_to_cpu(desc->buf_va_lo));
desc_info = (struct ath12k_rx_desc_info *)((unsigned long)desc_va);
/* retry manual desc retrieval */
if (!desc_info) {
desc_info = ath12k_dp_get_rx_desc(dp, cookie);
if (!desc_info) {
ath12k_warn(dp->ab,
"Invalid cookie in DP rx error descriptor retrieval: 0x%x\n",
cookie);
return -EINVAL;
}
}
if (desc_info->magic != ATH12K_DP_RX_DESC_MAGIC)
ath12k_warn(dp->ab, "RX Exception, Check HW CC implementation");
msdu = desc_info->skb;
desc_info->skb = NULL;
list_add_tail(&desc_info->list, used_list);
rxcb = ATH12K_SKB_RXCB(msdu);
dma_unmap_single(dp->dev, rxcb->paddr,
msdu->len + skb_tailroom(msdu),
DMA_FROM_DEVICE);
if (drop) {
dev_kfree_skb_any(msdu);
return 0;
}
rcu_read_lock();
if (!rcu_dereference(ar->ab->pdevs_active[ar->pdev_idx])) {
dev_kfree_skb_any(msdu);
goto exit;
}
if (test_bit(ATH12K_FLAG_CAC_RUNNING, &ar->dev_flags)) {
dev_kfree_skb_any(msdu);
goto exit;
}
rx_desc = (struct hal_rx_desc *)msdu->data;
ath12k_dp_extract_rx_desc_data(hal, &rx_info, rx_desc, rx_desc);
msdu_len = rx_info.msdu_len;
if ((msdu_len + hal_rx_desc_sz) > DP_RX_BUFFER_SIZE) {
ath12k_warn(dp->ab, "invalid msdu leng %u", msdu_len);
ath12k_dbg_dump(dp->ab, ATH12K_DBG_DATA, NULL, "", rx_desc,
sizeof(*rx_desc));
dev_kfree_skb_any(msdu);
goto exit;
}
skb_put(msdu, hal_rx_desc_sz + msdu_len);
if (ath12k_wifi7_dp_rx_frag_h_mpdu(dp_pdev, msdu, desc, &rx_info)) {
dev_kfree_skb_any(msdu);
ath12k_wifi7_dp_rx_link_desc_return(dp, &desc->buf_addr_info,
HAL_WBM_REL_BM_ACT_PUT_IN_IDLE);
}
exit:
rcu_read_unlock();
return 0;
}
static int ath12k_dp_h_msdu_buffer_type(struct ath12k_dp *dp,
struct list_head *list,
struct hal_reo_dest_ring *desc)
{
struct ath12k_rx_desc_info *desc_info;
struct ath12k_skb_rxcb *rxcb;
struct sk_buff *msdu;
u64 desc_va;
dp->device_stats.reo_excep_msdu_buf_type++;
desc_va = (u64)le32_to_cpu(desc->buf_va_hi) << 32 |
le32_to_cpu(desc->buf_va_lo);
desc_info = (struct ath12k_rx_desc_info *)(uintptr_t)desc_va;
if (!desc_info) {
u32 cookie;
cookie = le32_get_bits(desc->buf_addr_info.info1,
BUFFER_ADDR_INFO1_SW_COOKIE);
desc_info = ath12k_dp_get_rx_desc(dp, cookie);
if (!desc_info) {
ath12k_warn(dp->ab, "Invalid cookie in manual descriptor retrieval: 0x%x\n",
cookie);
return -EINVAL;
}
}
if (desc_info->magic != ATH12K_DP_RX_DESC_MAGIC) {
ath12k_warn(dp->ab, "rx exception, magic check failed with value: %u\n",
desc_info->magic);
return -EINVAL;
}
msdu = desc_info->skb;
desc_info->skb = NULL;
list_add_tail(&desc_info->list, list);
rxcb = ATH12K_SKB_RXCB(msdu);
dma_unmap_single(dp->dev, rxcb->paddr, msdu->len + skb_tailroom(msdu),
DMA_FROM_DEVICE);
dev_kfree_skb_any(msdu);
return 0;
}
int ath12k_wifi7_dp_rx_process_err(struct ath12k_dp *dp, struct napi_struct *napi,
int budget)
{
struct ath12k_base *ab = dp->ab;
struct ath12k_hal *hal = dp->hal;
struct ath12k_hw_group *ag = dp->ag;
struct ath12k_dp_hw_group *dp_hw_grp = &ag->dp_hw_grp;
struct ath12k_dp *partner_dp;
struct list_head rx_desc_used_list[ATH12K_MAX_DEVICES];
u32 msdu_cookies[HAL_NUM_RX_MSDUS_PER_LINK_DESC];
int num_buffs_reaped[ATH12K_MAX_DEVICES] = {};
struct dp_link_desc_bank *link_desc_banks;
enum hal_rx_buf_return_buf_manager rbm;
struct hal_rx_msdu_link *link_desc_va;
int tot_n_bufs_reaped, quota, ret, i;
struct hal_reo_dest_ring *reo_desc;
struct dp_rxdma_ring *rx_ring;
struct dp_srng *reo_except;
struct ath12k_hw_link *hw_links = ag->hw_links;
struct ath12k_pdev_dp *dp_pdev;
u8 hw_link_id, device_id;
u32 desc_bank, num_msdus;
struct hal_srng *srng;
dma_addr_t paddr;
bool is_frag;
bool drop;
int pdev_idx;
struct list_head *used_list;
enum hal_wbm_rel_bm_act act;
tot_n_bufs_reaped = 0;
quota = budget;
for (device_id = 0; device_id < ATH12K_MAX_DEVICES; device_id++)
INIT_LIST_HEAD(&rx_desc_used_list[device_id]);
reo_except = &dp->reo_except_ring;
srng = &hal->srng_list[reo_except->ring_id];
spin_lock_bh(&srng->lock);
ath12k_hal_srng_access_begin(ab, srng);
while (budget &&
(reo_desc = ath12k_hal_srng_dst_get_next_entry(ab, srng))) {
drop = false;
dp->device_stats.err_ring_pkts++;
hw_link_id = le32_get_bits(reo_desc->info0,
HAL_REO_DEST_RING_INFO0_SRC_LINK_ID);
device_id = hw_links[hw_link_id].device_id;
partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
/* Below case is added to handle data packet from un-associated clients.
* As it is expected that AST lookup will fail for
* un-associated station's data packets.
*/
if (le32_get_bits(reo_desc->info0, HAL_REO_DEST_RING_INFO0_BUFFER_TYPE) ==
HAL_REO_DEST_RING_BUFFER_TYPE_MSDU) {
if (!ath12k_dp_h_msdu_buffer_type(partner_dp,
&rx_desc_used_list[device_id],
reo_desc)) {
num_buffs_reaped[device_id]++;
tot_n_bufs_reaped++;
}
goto next_desc;
}
ret = ath12k_wifi7_hal_desc_reo_parse_err(dp, reo_desc, &paddr,
&desc_bank);
if (ret) {
ath12k_warn(ab, "failed to parse error reo desc %d\n",
ret);
continue;
}
pdev_idx = ath12k_hw_mac_id_to_pdev_id(partner_dp->hw_params,
hw_links[hw_link_id].pdev_idx);
link_desc_banks = partner_dp->link_desc_banks;
link_desc_va = link_desc_banks[desc_bank].vaddr +
(paddr - link_desc_banks[desc_bank].paddr);
ath12k_wifi7_hal_rx_msdu_link_info_get(link_desc_va, &num_msdus,
msdu_cookies, &rbm);
if (rbm != partner_dp->idle_link_rbm &&
rbm != HAL_RX_BUF_RBM_SW3_BM &&
rbm != partner_dp->hal->hal_params->rx_buf_rbm) {
act = HAL_WBM_REL_BM_ACT_REL_MSDU;
dp->device_stats.invalid_rbm++;
ath12k_warn(ab, "invalid return buffer manager %d\n", rbm);
ath12k_wifi7_dp_rx_link_desc_return(partner_dp,
&reo_desc->buf_addr_info,
act);
continue;
}
is_frag = !!(le32_to_cpu(reo_desc->rx_mpdu_info.info0) &
RX_MPDU_DESC_INFO0_FRAG_FLAG);
/* Process only rx fragments with one msdu per link desc below, and drop
* msdu's indicated due to error reasons.
* Dynamic fragmentation not supported in Multi-link client, so drop the
* partner device buffers.
*/
if (!is_frag || num_msdus > 1 ||
partner_dp->device_id != dp->device_id) {
drop = true;
act = HAL_WBM_REL_BM_ACT_PUT_IN_IDLE;
/* Return the link desc back to wbm idle list */
ath12k_wifi7_dp_rx_link_desc_return(partner_dp,
&reo_desc->buf_addr_info,
act);
}
rcu_read_lock();
dp_pdev = ath12k_dp_to_pdev_dp(dp, pdev_idx);
if (!dp_pdev) {
rcu_read_unlock();
continue;
}
for (i = 0; i < num_msdus; i++) {
used_list = &rx_desc_used_list[device_id];
if (!ath12k_wifi7_dp_process_rx_err_buf(dp_pdev, reo_desc,
used_list,
drop,
msdu_cookies[i])) {
num_buffs_reaped[device_id]++;
tot_n_bufs_reaped++;
}
}
rcu_read_unlock();
next_desc:
if (tot_n_bufs_reaped >= quota) {
tot_n_bufs_reaped = quota;
goto exit;
}
budget = quota - tot_n_bufs_reaped;
}
exit:
ath12k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
for (device_id = 0; device_id < ATH12K_MAX_DEVICES; device_id++) {
if (!num_buffs_reaped[device_id])
continue;
partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
rx_ring = &partner_dp->rx_refill_buf_ring;
ath12k_dp_rx_bufs_replenish(partner_dp, rx_ring,
&rx_desc_used_list[device_id],
num_buffs_reaped[device_id]);
}
return tot_n_bufs_reaped;
}
static void
ath12k_wifi7_dp_rx_null_q_desc_sg_drop(struct ath12k_dp *dp, int msdu_len,
struct sk_buff_head *msdu_list)
{
struct sk_buff *skb, *tmp;
struct ath12k_skb_rxcb *rxcb;
int n_buffs;
n_buffs = DIV_ROUND_UP(msdu_len,
(DP_RX_BUFFER_SIZE - dp->ab->hal.hal_desc_sz));
skb_queue_walk_safe(msdu_list, skb, tmp) {
rxcb = ATH12K_SKB_RXCB(skb);
if (rxcb->err_rel_src == HAL_WBM_REL_SRC_MODULE_REO &&
rxcb->err_code == HAL_REO_DEST_RING_ERROR_CODE_DESC_ADDR_ZERO) {
if (!n_buffs)
break;
__skb_unlink(skb, msdu_list);
dev_kfree_skb_any(skb);
n_buffs--;
}
}
}
static int ath12k_wifi7_dp_rx_h_null_q_desc(struct ath12k_pdev_dp *dp_pdev,
struct sk_buff *msdu,
struct hal_rx_desc_data *rx_info,
struct sk_buff_head *msdu_list)
{
struct ath12k_dp *dp = dp_pdev->dp;
struct ath12k_base *ab = dp->ab;
u16 msdu_len = rx_info->msdu_len;
u8 l3pad_bytes = rx_info->l3_pad_bytes;
struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
u32 hal_rx_desc_sz = dp->ab->hal.hal_desc_sz;
int ret;
if (!rxcb->is_frag && ((msdu_len + hal_rx_desc_sz) > DP_RX_BUFFER_SIZE)) {
/* First buffer will be freed by the caller, so deduct it's length */
msdu_len = msdu_len - (DP_RX_BUFFER_SIZE - hal_rx_desc_sz);
ath12k_wifi7_dp_rx_null_q_desc_sg_drop(dp, msdu_len, msdu_list);
return -EINVAL;
}
/* Even after cleaning up the sg buffers in the msdu list with above check
* any msdu received with continuation flag needs to be dropped as invalid.
* This protects against some random err frame with continuation flag.
*/
if (rxcb->is_continuation)
return -EINVAL;
if (!rx_info->msdu_done) {
ath12k_warn(ab,
"msdu_done bit not set in null_q_des processing\n");
__skb_queue_purge(msdu_list);
return -EIO;
}
/* Handle NULL queue descriptor violations arising out a missing
* REO queue for a given peer or a given TID. This typically
* may happen if a packet is received on a QOS enabled TID before the
* ADDBA negotiation for that TID, when the TID queue is setup. Or
* it may also happen for MC/BC frames if they are not routed to the
* non-QOS TID queue, in the absence of any other default TID queue.
* This error can show up both in a REO destination or WBM release ring.
*/
if (rxcb->is_frag) {
skb_pull(msdu, hal_rx_desc_sz);
} else {
if ((hal_rx_desc_sz + l3pad_bytes + msdu_len) > DP_RX_BUFFER_SIZE)
return -EINVAL;
skb_put(msdu, hal_rx_desc_sz + l3pad_bytes + msdu_len);
skb_pull(msdu, hal_rx_desc_sz + l3pad_bytes);
}
if (unlikely(!ath12k_dp_rx_check_nwifi_hdr_len_valid(dp, msdu, rx_info)))
return -EINVAL;
ath12k_dp_rx_h_ppdu(dp_pdev, rx_info);
ret = ath12k_wifi7_dp_rx_h_mpdu(dp_pdev, msdu, rx_info);
if (ret)
return ret;
rxcb->tid = rx_info->tid;
/* Please note that caller will having the access to msdu and completing
* rx with mac80211. Need not worry about cleaning up amsdu_list.
*/
return 0;
}
static bool ath12k_wifi7_dp_rx_h_tkip_mic_err(struct ath12k_pdev_dp *dp_pdev,
struct sk_buff *msdu,
struct hal_rx_desc_data *rx_info)
{
struct ath12k_dp *dp = dp_pdev->dp;
struct ath12k_base *ab = dp->ab;
u16 msdu_len = rx_info->msdu_len;
struct hal_rx_desc *desc = (struct hal_rx_desc *)msdu->data;
u8 l3pad_bytes = rx_info->l3_pad_bytes;
struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
u32 hal_rx_desc_sz = ab->hal.hal_desc_sz;
rxcb->is_first_msdu = rx_info->is_first_msdu;
rxcb->is_last_msdu = rx_info->is_last_msdu;
if ((hal_rx_desc_sz + l3pad_bytes + msdu_len) > DP_RX_BUFFER_SIZE) {
ath12k_dbg(ab, ATH12K_DBG_DATA,
"invalid msdu len in tkip mic err %u\n", msdu_len);
ath12k_dbg_dump(ab, ATH12K_DBG_DATA, NULL, "", desc,
sizeof(*desc));
return true;
}
skb_put(msdu, hal_rx_desc_sz + l3pad_bytes + msdu_len);
skb_pull(msdu, hal_rx_desc_sz + l3pad_bytes);
if (unlikely(!ath12k_dp_rx_check_nwifi_hdr_len_valid(dp, msdu, rx_info)))
return true;
ath12k_dp_rx_h_ppdu(dp_pdev, rx_info);
rx_info->rx_status->flag |= (RX_FLAG_MMIC_STRIPPED | RX_FLAG_MMIC_ERROR |
RX_FLAG_DECRYPTED);
ath12k_dp_rx_h_undecap(dp_pdev, msdu, HAL_ENCRYPT_TYPE_TKIP_MIC, false,
rx_info, NULL);
return false;
}
static bool ath12k_wifi7_dp_rx_h_unauth_wds_err(struct ath12k_pdev_dp *dp_pdev,
struct sk_buff *msdu,
struct hal_rx_desc_data *rx_info)
{
struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
struct ath12k_dp *dp = dp_pdev->dp;
u32 hdr_len, hal_rx_desc_sz = dp->ab->hal.hal_desc_sz;
u8 l3pad_bytes = rx_info->l3_pad_bytes;
struct ath12k_dp_rx_rfc1042_hdr *llc;
u16 msdu_len = rx_info->msdu_len;
struct ath12k_dp_peer *peer;
struct ieee80211_hdr *hdr;
int ret;
guard(rcu)();
peer = ath12k_dp_peer_find_by_peerid(dp_pdev, rxcb->peer_id);
if (!peer) {
ath12k_dbg(dp->ab, ATH12K_DBG_DATA,
"failed to find the peer to process unauth wds err handling peer_id %d\n",
rxcb->peer_id);
return true;
}
if ((hal_rx_desc_sz + l3pad_bytes + msdu_len) > DP_RX_BUFFER_SIZE)
return true;
skb_put(msdu, hal_rx_desc_sz + l3pad_bytes + msdu_len);
skb_pull(msdu, hal_rx_desc_sz + l3pad_bytes);
if (unlikely(!ath12k_dp_rx_check_nwifi_hdr_len_valid(dp, msdu,
rx_info)))
return true;
ath12k_dp_rx_h_ppdu(dp_pdev, rx_info);
ret = ath12k_wifi7_dp_rx_h_mpdu(dp_pdev, msdu, rx_info);
if (ret)
return true;
rxcb->tid = rx_info->tid;
hdr = (struct ieee80211_hdr *)msdu->data;
hdr_len = ieee80211_hdrlen(hdr->frame_control);
llc = (struct ath12k_dp_rx_rfc1042_hdr *)(msdu->data + hdr_len);
if (llc->snap_type != cpu_to_be16(ETH_P_PAE))
return true;
return false;
}
static bool ath12k_wifi7_dp_rx_h_rxdma_err(struct ath12k_pdev_dp *dp_pdev,
struct sk_buff *msdu,
struct hal_rx_desc_data *rx_info)
{
struct ath12k_dp *dp = dp_pdev->dp;
struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
bool drop = false;
dp->device_stats.rxdma_error[rxcb->err_code]++;
switch (rxcb->err_code) {
case HAL_REO_ENTR_RING_RXDMA_ECODE_UNAUTH_WDS_ERR:
drop = ath12k_wifi7_dp_rx_h_unauth_wds_err(dp_pdev, msdu, rx_info);
break;
case HAL_REO_ENTR_RING_RXDMA_ECODE_DECRYPT_ERR:
case HAL_REO_ENTR_RING_RXDMA_ECODE_TKIP_MIC_ERR:
if (rx_info->err_bitmap & HAL_RX_MPDU_ERR_TKIP_MIC) {
drop = ath12k_wifi7_dp_rx_h_tkip_mic_err(dp_pdev, msdu, rx_info);
break;
}
fallthrough;
default:
/* TODO: Review other rxdma error code to check if anything is
* worth reporting to mac80211
*/
drop = true;
break;
}
return drop;
}
static bool ath12k_wifi7_dp_rx_h_reo_err(struct ath12k_pdev_dp *dp_pdev,
struct sk_buff *msdu,
struct hal_rx_desc_data *rx_info,
struct sk_buff_head *msdu_list)
{
struct ath12k_dp *dp = dp_pdev->dp;
struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
bool drop = false;
dp->device_stats.reo_error[rxcb->err_code]++;
switch (rxcb->err_code) {
case HAL_REO_DEST_RING_ERROR_CODE_DESC_ADDR_ZERO:
if (ath12k_wifi7_dp_rx_h_null_q_desc(dp_pdev, msdu, rx_info, msdu_list))
drop = true;
break;
case HAL_REO_DEST_RING_ERROR_CODE_PN_CHECK_FAILED:
/* TODO: Do not drop PN failed packets in the driver;
* instead, it is good to drop such packets in mac80211
* after incrementing the replay counters.
*/
fallthrough;
default:
/* TODO: Review other errors and process them to mac80211
* as appropriate.
*/
drop = true;
break;
}
return drop;
}
static void ath12k_wifi7_dp_rx_wbm_err(struct ath12k_pdev_dp *dp_pdev,
struct napi_struct *napi,
struct sk_buff *msdu,
struct sk_buff_head *msdu_list)
{
struct ath12k_dp *dp = dp_pdev->dp;
struct hal_rx_desc *rx_desc = (struct hal_rx_desc *)msdu->data;
struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
struct ieee80211_rx_status rxs = {};
struct hal_rx_desc_data rx_info;
bool drop = true;
rx_info.addr2_present = false;
rx_info.rx_status = &rxs;
ath12k_dp_extract_rx_desc_data(dp->hal, &rx_info, rx_desc, rx_desc);
switch (rxcb->err_rel_src) {
case HAL_WBM_REL_SRC_MODULE_REO:
drop = ath12k_wifi7_dp_rx_h_reo_err(dp_pdev, msdu, &rx_info, msdu_list);
break;
case HAL_WBM_REL_SRC_MODULE_RXDMA:
drop = ath12k_wifi7_dp_rx_h_rxdma_err(dp_pdev, msdu, &rx_info);
break;
default:
/* msdu will get freed */
break;
}
if (drop) {
dev_kfree_skb_any(msdu);
return;
}
rx_info.rx_status->flag |= RX_FLAG_SKIP_MONITOR;
ath12k_dp_rx_deliver_msdu(dp_pdev, napi, msdu, &rx_info);
}
void ath12k_wifi7_dp_setup_pn_check_reo_cmd(struct ath12k_hal_reo_cmd *cmd,
struct ath12k_dp_rx_tid *rx_tid,
u32 cipher, enum set_key_cmd key_cmd)
{
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 (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;
}
cmd->addr_lo = lower_32_bits(rx_tid->qbuf.paddr_aligned);
cmd->addr_hi = upper_32_bits(rx_tid->qbuf.paddr_aligned);
}
int ath12k_wifi7_dp_rx_process_wbm_err(struct ath12k_dp *dp,
struct napi_struct *napi, int budget)
{
struct list_head rx_desc_used_list[ATH12K_MAX_DEVICES];
struct ath12k_base *ab = dp->ab;
struct ath12k_hal *hal = dp->hal;
struct ath12k *ar;
struct ath12k_pdev_dp *dp_pdev;
struct ath12k_hw_group *ag = dp->ag;
struct ath12k_dp_hw_group *dp_hw_grp = &ag->dp_hw_grp;
struct ath12k_dp *partner_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, scatter_msdu_list;
struct ath12k_skb_rxcb *rxcb;
void *rx_desc;
int num_buffs_reaped[ATH12K_MAX_DEVICES] = {};
int total_num_buffs_reaped = 0;
struct ath12k_rx_desc_info *desc_info;
struct ath12k_device_dp_stats *device_stats = &dp->device_stats;
struct ath12k_hw_link *hw_links = ag->hw_links;
u8 hw_link_id, device_id;
int ret, pdev_idx;
struct hal_rx_desc *msdu_data;
__skb_queue_head_init(&msdu_list);
__skb_queue_head_init(&scatter_msdu_list);
for (device_id = 0; device_id < ATH12K_MAX_DEVICES; device_id++)
INIT_LIST_HEAD(&rx_desc_used_list[device_id]);
srng = &hal->srng_list[dp->rx_rel_ring.ring_id];
spin_lock_bh(&srng->lock);
ath12k_hal_srng_access_begin(ab, srng);
while (budget) {
rx_desc = ath12k_hal_srng_dst_get_next_entry(ab, srng);
if (!rx_desc)
break;
ret = ath12k_wifi7_hal_wbm_desc_parse_err(dp, rx_desc,
&err_info);
if (ret) {
ath12k_warn(ab, "failed to parse rx error in wbm_rel ring desc %d\n",
ret);
continue;
}
desc_info = err_info.rx_desc;
/* retry manual desc retrieval if hw cc is not done */
if (!desc_info) {
desc_info = ath12k_dp_get_rx_desc(dp, err_info.cookie);
if (!desc_info) {
ath12k_warn(ab, "Invalid cookie in DP WBM rx error descriptor retrieval: 0x%x\n",
err_info.cookie);
continue;
}
}
if (desc_info->magic != ATH12K_DP_RX_DESC_MAGIC)
ath12k_warn(ab, "WBM RX err, Check HW CC implementation");
msdu = desc_info->skb;
desc_info->skb = NULL;
device_id = desc_info->device_id;
partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
if (unlikely(!partner_dp)) {
dev_kfree_skb_any(msdu);
/* In any case continuation bit is set
* in the previous record, cleanup scatter_msdu_list
*/
ath12k_dp_clean_up_skb_list(&scatter_msdu_list);
continue;
}
list_add_tail(&desc_info->list, &rx_desc_used_list[device_id]);
rxcb = ATH12K_SKB_RXCB(msdu);
dma_unmap_single(partner_dp->dev, rxcb->paddr,
msdu->len + skb_tailroom(msdu),
DMA_FROM_DEVICE);
num_buffs_reaped[device_id]++;
total_num_buffs_reaped++;
if (!err_info.continuation)
budget--;
if (err_info.push_reason !=
HAL_REO_DEST_RING_PUSH_REASON_ERR_DETECTED) {
dev_kfree_skb_any(msdu);
continue;
}
msdu_data = (struct hal_rx_desc *)msdu->data;
rxcb->err_rel_src = err_info.err_rel_src;
rxcb->err_code = err_info.err_code;
rxcb->is_first_msdu = err_info.first_msdu;
rxcb->is_last_msdu = err_info.last_msdu;
rxcb->is_continuation = err_info.continuation;
rxcb->rx_desc = msdu_data;
rxcb->peer_id = ath12k_wifi7_dp_rx_get_peer_id(dp, dp->peer_metadata_ver,
err_info.peer_metadata);
if (err_info.continuation) {
__skb_queue_tail(&scatter_msdu_list, msdu);
continue;
}
hw_link_id = ath12k_dp_rx_get_msdu_src_link(partner_dp->hal,
msdu_data);
if (hw_link_id >= ATH12K_GROUP_MAX_RADIO) {
dev_kfree_skb_any(msdu);
/* In any case continuation bit is set
* in the previous record, cleanup scatter_msdu_list
*/
ath12k_dp_clean_up_skb_list(&scatter_msdu_list);
continue;
}
if (!skb_queue_empty(&scatter_msdu_list)) {
struct sk_buff *msdu;
skb_queue_walk(&scatter_msdu_list, msdu) {
rxcb = ATH12K_SKB_RXCB(msdu);
rxcb->hw_link_id = hw_link_id;
}
skb_queue_splice_tail_init(&scatter_msdu_list,
&msdu_list);
}
rxcb = ATH12K_SKB_RXCB(msdu);
rxcb->hw_link_id = hw_link_id;
__skb_queue_tail(&msdu_list, msdu);
}
/* In any case continuation bit is set in the
* last record, cleanup scatter_msdu_list
*/
ath12k_dp_clean_up_skb_list(&scatter_msdu_list);
ath12k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
if (!total_num_buffs_reaped)
goto done;
for (device_id = 0; device_id < ATH12K_MAX_DEVICES; device_id++) {
if (!num_buffs_reaped[device_id])
continue;
partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
rx_ring = &partner_dp->rx_refill_buf_ring;
ath12k_dp_rx_bufs_replenish(dp, rx_ring,
&rx_desc_used_list[device_id],
num_buffs_reaped[device_id]);
}
rcu_read_lock();
while ((msdu = __skb_dequeue(&msdu_list))) {
rxcb = ATH12K_SKB_RXCB(msdu);
hw_link_id = rxcb->hw_link_id;
device_id = hw_links[hw_link_id].device_id;
partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
if (unlikely(!partner_dp)) {
ath12k_dbg(ab, ATH12K_DBG_DATA,
"Unable to process WBM error msdu due to invalid hw link id %d device id %d\n",
hw_link_id, device_id);
dev_kfree_skb_any(msdu);
continue;
}
pdev_idx = ath12k_hw_mac_id_to_pdev_id(partner_dp->hw_params,
hw_links[hw_link_id].pdev_idx);
dp_pdev = ath12k_dp_to_pdev_dp(partner_dp, pdev_idx);
if (!dp_pdev) {
dev_kfree_skb_any(msdu);
continue;
}
ar = ath12k_pdev_dp_to_ar(dp_pdev);
if (!ar || !rcu_dereference(ar->ab->pdevs_active[pdev_idx])) {
dev_kfree_skb_any(msdu);
continue;
}
if (test_bit(ATH12K_FLAG_CAC_RUNNING, &ar->dev_flags)) {
dev_kfree_skb_any(msdu);
continue;
}
if (rxcb->err_rel_src < HAL_WBM_REL_SRC_MODULE_MAX) {
device_id = dp_pdev->dp->device_id;
device_stats->rx_wbm_rel_source[rxcb->err_rel_src][device_id]++;
}
ath12k_wifi7_dp_rx_wbm_err(dp_pdev, napi, msdu, &msdu_list);
}
rcu_read_unlock();
done:
return total_num_buffs_reaped;
}
int ath12k_dp_rxdma_ring_sel_config_qcn9274(struct ath12k_base *ab)
{
struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
struct htt_rx_ring_tlv_filter tlv_filter = {};
u32 ring_id;
int ret;
u32 hal_rx_desc_sz = ab->hal.hal_desc_sz;
ring_id = dp->rx_refill_buf_ring.refill_buf_ring.ring_id;
tlv_filter.rx_filter = HTT_RX_TLV_FLAGS_RXDMA_RING;
tlv_filter.pkt_filter_flags2 = HTT_RX_FP_CTRL_PKT_FILTER_TLV_FLAGS2_BAR;
tlv_filter.pkt_filter_flags3 = HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_MCAST |
HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_UCAST |
HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_NULL_DATA;
tlv_filter.offset_valid = true;
tlv_filter.rx_packet_offset = hal_rx_desc_sz;
tlv_filter.rx_mpdu_start_offset =
ath12k_hal_rx_desc_get_mpdu_start_offset_qcn9274();
tlv_filter.rx_msdu_end_offset =
ath12k_hal_rx_desc_get_msdu_end_offset_qcn9274();
tlv_filter.rx_mpdu_start_wmask = ath12k_hal_rx_mpdu_start_wmask_get_qcn9274();
tlv_filter.rx_msdu_end_wmask = ath12k_hal_rx_msdu_end_wmask_get_qcn9274();
ath12k_dbg(ab, ATH12K_DBG_DATA,
"Configuring compact tlv masks rx_mpdu_start_wmask 0x%x rx_msdu_end_wmask 0x%x\n",
tlv_filter.rx_mpdu_start_wmask, tlv_filter.rx_msdu_end_wmask);
ret = ath12k_dp_tx_htt_rx_filter_setup(ab, ring_id, 0,
HAL_RXDMA_BUF,
DP_RXDMA_REFILL_RING_SIZE,
&tlv_filter);
return ret;
}
int ath12k_dp_rxdma_ring_sel_config_wcn7850(struct ath12k_base *ab)
{
struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
struct htt_rx_ring_tlv_filter tlv_filter = {};
u32 ring_id;
int ret = 0;
u32 hal_rx_desc_sz = ab->hal.hal_desc_sz;
int i;
ring_id = dp->rx_refill_buf_ring.refill_buf_ring.ring_id;
tlv_filter.rx_filter = HTT_RX_TLV_FLAGS_RXDMA_RING;
tlv_filter.pkt_filter_flags2 = HTT_RX_FP_CTRL_PKT_FILTER_TLV_FLAGS2_BAR;
tlv_filter.pkt_filter_flags3 = HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_MCAST |
HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_UCAST |
HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_NULL_DATA;
tlv_filter.offset_valid = true;
tlv_filter.rx_packet_offset = hal_rx_desc_sz;
tlv_filter.rx_header_offset = offsetof(struct hal_rx_desc_wcn7850, pkt_hdr_tlv);
tlv_filter.rx_mpdu_start_offset =
ath12k_hal_rx_desc_get_mpdu_start_offset_wcn7850();
tlv_filter.rx_msdu_end_offset =
ath12k_hal_rx_desc_get_msdu_end_offset_wcn7850();
/* TODO: Selectively subscribe to required qwords within msdu_end
* and mpdu_start and setup the mask in below msg
* and modify the rx_desc struct
*/
for (i = 0; i < ab->hw_params->num_rxdma_per_pdev; i++) {
ring_id = dp->rx_mac_buf_ring[i].ring_id;
ret = ath12k_dp_tx_htt_rx_filter_setup(ab, ring_id, i,
HAL_RXDMA_BUF,
DP_RXDMA_REFILL_RING_SIZE,
&tlv_filter);
}
return ret;
}
int ath12k_dp_rxdma_ring_sel_config_qcc2072(struct ath12k_base *ab)
{
struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
struct htt_rx_ring_tlv_filter tlv_filter = {};
u32 ring_id;
int ret = 0;
u32 hal_rx_desc_sz = ab->hal.hal_desc_sz;
int i;
ring_id = dp->rx_refill_buf_ring.refill_buf_ring.ring_id;
tlv_filter.rx_filter = HTT_RX_TLV_FLAGS_RXDMA_RING;
tlv_filter.pkt_filter_flags2 = HTT_RX_FP_CTRL_PKT_FILTER_TLV_FLAGS2_BAR;
tlv_filter.pkt_filter_flags3 = HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_MCAST |
HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_UCAST |
HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_NULL_DATA;
tlv_filter.offset_valid = true;
tlv_filter.rx_packet_offset = hal_rx_desc_sz;
tlv_filter.rx_header_offset = offsetof(struct hal_rx_desc_qcc2072, pkt_hdr_tlv);
tlv_filter.rx_mpdu_start_offset =
ath12k_hal_rx_desc_get_mpdu_start_offset_qcc2072();
tlv_filter.rx_msdu_end_offset =
ath12k_hal_rx_desc_get_msdu_end_offset_qcc2072();
/*
* TODO: Selectively subscribe to required qwords within msdu_end
* and mpdu_start and setup the mask in below msg
* and modify the rx_desc struct
*/
for (i = 0; i < ab->hw_params->num_rxdma_per_pdev; i++) {
ring_id = dp->rx_mac_buf_ring[i].ring_id;
ret = ath12k_dp_tx_htt_rx_filter_setup(ab, ring_id, i,
HAL_RXDMA_BUF,
DP_RXDMA_REFILL_RING_SIZE,
&tlv_filter);
}
return ret;
}
void ath12k_wifi7_dp_rx_process_reo_status(struct ath12k_dp *dp)
{
struct ath12k_base *ab = dp->ab;
struct ath12k_hal *hal = dp->hal;
struct hal_srng *srng;
struct ath12k_dp_rx_reo_cmd *cmd, *tmp;
bool found = false;
u16 tag;
struct hal_reo_status reo_status;
void *hdr, *desc;
srng = &hal->srng_list[dp->reo_status_ring.ring_id];
memset(&reo_status, 0, sizeof(reo_status));
spin_lock_bh(&srng->lock);
ath12k_hal_srng_access_begin(ab, srng);
while ((hdr = ath12k_hal_srng_dst_get_next_entry(ab, srng))) {
tag = hal->ops->reo_status_dec_tlv_hdr(hdr, &desc);
switch (tag) {
case HAL_REO_GET_QUEUE_STATS_STATUS:
ath12k_wifi7_hal_reo_status_queue_stats(ab, desc,
&reo_status);
break;
case HAL_REO_FLUSH_QUEUE_STATUS:
ath12k_wifi7_hal_reo_flush_queue_status(ab, desc,
&reo_status);
break;
case HAL_REO_FLUSH_CACHE_STATUS:
ath12k_wifi7_hal_reo_flush_cache_status(ab, desc,
&reo_status);
break;
case HAL_REO_UNBLOCK_CACHE_STATUS:
ath12k_wifi7_hal_reo_unblk_cache_status(ab, desc,
&reo_status);
break;
case HAL_REO_FLUSH_TIMEOUT_LIST_STATUS:
ath12k_wifi7_hal_reo_flush_timeout_list_status(ab, desc,
&reo_status);
break;
case HAL_REO_DESCRIPTOR_THRESHOLD_REACHED_STATUS:
ath12k_wifi7_hal_reo_desc_thresh_reached_status(ab, desc,
&reo_status);
break;
case HAL_REO_UPDATE_RX_REO_QUEUE_STATUS:
ath12k_wifi7_hal_reo_update_rx_reo_queue_status(ab, desc,
&reo_status);
break;
default:
ath12k_warn(ab, "Unknown reo status type %d\n", tag);
continue;
}
spin_lock_bh(&dp->reo_cmd_lock);
list_for_each_entry_safe(cmd, tmp, &dp->reo_cmd_list, list) {
if (reo_status.uniform_hdr.cmd_num == cmd->cmd_num) {
found = true;
list_del(&cmd->list);
break;
}
}
spin_unlock_bh(&dp->reo_cmd_lock);
if (found) {
cmd->handler(dp, (void *)&cmd->data,
reo_status.uniform_hdr.cmd_status);
kfree(cmd);
}
found = false;
}
ath12k_hal_srng_access_end(ab, srng);
spin_unlock_bh(&srng->lock);
}
bool
ath12k_wifi7_dp_rxdesc_mpdu_valid(struct ath12k_base *ab,
struct hal_rx_desc *rx_desc)
{
u32 tlv_tag;
tlv_tag = ab->hal.ops->rx_desc_get_mpdu_start_tag(rx_desc);
return tlv_tag == HAL_RX_MPDU_START;
}
void
ath12k_wifi7_dp_rx_set_link_id_qcn9274(struct ath12k_dp_peer *dp_peer,
struct ath12k_skb_rxcb *rxcb,
struct ieee80211_rx_status *status)
{
status->link_valid = 1;
status->link_id = dp_peer->hw_links[rxcb->hw_link_id];
}
void
ath12k_wifi7_dp_rx_set_link_id_wcn7850(struct ath12k_dp_peer *dp_peer,
struct ath12k_skb_rxcb *rxcb,
struct ieee80211_rx_status *status)
{
struct ath12k_dp_link_peer *link_peer;
unsigned long links_map;
int i;
RCU_LOCKDEP_WARN(!rcu_read_lock_held(),
"ath12k set rx link id called without rcu lock");
links_map = READ_ONCE(dp_peer->link_peers_map);
for_each_set_bit(i, &links_map, ATH12K_NUM_MAX_LINKS) {
link_peer = rcu_dereference(dp_peer->link_peers[i]);
if (link_peer && link_peer->peer_id == rxcb->peer_id) {
status->link_valid = 1;
status->link_id = link_peer->link_id;
return;
}
}
}
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