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qca-wifi: Support HW generated CTS in Tx capture

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Generate CTS frames when RTS is received for Tx capture.

Change-Id: I18facb952bbdc3f34fd2403806b7cd5c9c6f18d4
This commit is contained in:
Karunakar Dasineni
2020-01-21 10:21:25 -08:00
committed by Gerrit - the friendly Code Review server
parent ffce2cf705
commit f7e9e55e85
2 changed files with 110 additions and 1 deletions
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109
dp/wifi3.0/dp_tx_capture.c
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@@ -34,7 +34,8 @@
#define MAX_MONITOR_HEADER (512)
#define MAX_DUMMY_FRM_BODY (128)
#define DP_BA_ACK_FRAME_SIZE (sizeof(struct ieee80211_ctlframe_addr2) + 36)
#define DP_ACK_FRAME_SIZE (struct ieee80211_frame_min_one)
#define DP_ACK_FRAME_SIZE (sizeof(struct ieee80211_frame_min_one))
#define DP_CTS_FRAME_SIZE (sizeof(struct ieee80211_frame_min_one))
#define DP_MAX_MPDU_64 64
#define DP_NUM_WORDS_PER_PPDU_BITMAP_64 (DP_MAX_MPDU_64 >> 5)
#define DP_NUM_BYTES_PER_PPDU_BITMAP_64 (DP_MAX_MPDU_64 >> 3)
@@ -3265,6 +3266,108 @@ static void dp_gen_block_ack_frame(
(frm - (uint8_t *)qdf_nbuf_data(mpdu_nbuf)));
}
static void dp_gen_cts_frame(struct hal_rx_ppdu_info *ppdu_info,
struct dp_peer *peer,
qdf_nbuf_t mpdu_nbuf)
{
struct ieee80211_frame_min_one *wh_addr1;
uint16_t duration;
wh_addr1 = (struct ieee80211_frame_min_one *)
qdf_nbuf_data(mpdu_nbuf);
wh_addr1->i_fc[0] = 0;
wh_addr1->i_fc[1] = 0;
wh_addr1->i_fc[0] = IEEE80211_FC0_VERSION_0 |
IEEE80211_FC0_TYPE_CTL |
IEEE80211_FC0_SUBTYPE_CTS;
qdf_mem_copy(wh_addr1->i_addr1, &peer->mac_addr.raw[0],
QDF_MAC_ADDR_SIZE);
duration = (ppdu_info->rx_status.duration > SIFS_INTERVAL) ?
ppdu_info->rx_status.duration - SIFS_INTERVAL : 0;
wh_addr1->i_dur[0] = duration & 0xff;
wh_addr1->i_dur[1] = (duration >> 8) & 0xff;
qdf_nbuf_set_pktlen(mpdu_nbuf, sizeof(*wh_addr1));
}
/**
* dp_send_cts_frame_to_stack(): Function to deliver HW generated CTS frame
* in reponse to RTS
* @soc: core txrx main context
* @pdev: DP pdev object
* @ppdu_info: HAL RX PPDU info retrieved from status ring TLV
*
* return: status
*/
QDF_STATUS dp_send_cts_frame_to_stack(struct dp_soc *soc,
struct dp_pdev *pdev,
struct hal_rx_ppdu_info *ppdu_info)
{
struct cdp_tx_indication_info tx_capture_info;
struct mon_rx_user_status *rx_user_status =
&ppdu_info->rx_user_status[0];
struct dp_ast_entry *ast_entry;
uint32_t peer_id;
struct dp_peer *peer;
if (rx_user_status->ast_index >=
wlan_cfg_get_max_ast_idx(soc->wlan_cfg_ctx)) {
return QDF_STATUS_E_FAILURE;
}
qdf_spin_lock_bh(&soc->ast_lock);
ast_entry = soc->ast_table[rx_user_status->ast_index];
if (!ast_entry) {
qdf_spin_unlock_bh(&soc->ast_lock);
return QDF_STATUS_E_FAILURE;
}
peer = ast_entry->peer;
if (!peer || peer->peer_ids[0] == HTT_INVALID_PEER) {
qdf_spin_unlock_bh(&soc->ast_lock);
return QDF_STATUS_E_FAILURE;
}
peer_id = peer->peer_ids[0];
qdf_spin_unlock_bh(&soc->ast_lock);
peer = dp_peer_find_by_id(soc, peer_id);
if (!peer)
return QDF_STATUS_E_FAILURE;
if (!dp_peer_or_pdev_tx_cap_enabled(pdev,
peer)) {
dp_peer_unref_del_find_by_id(peer);
return QDF_STATUS_E_FAILURE;
}
set_mpdu_info(&tx_capture_info,
&ppdu_info->rx_status, rx_user_status);
tx_capture_info.mpdu_info.mcs = rx_user_status->mcs;
/* ppdu_desc is not required for legacy frames */
tx_capture_info.ppdu_desc = NULL;
tx_capture_info.mpdu_nbuf =
qdf_nbuf_alloc(pdev->soc->osdev,
MAX_MONITOR_HEADER +
DP_CTS_FRAME_SIZE,
MAX_MONITOR_HEADER,
4, FALSE);
if (!tx_capture_info.mpdu_nbuf) {
dp_peer_unref_del_find_by_id(peer);
return QDF_STATUS_E_NOMEM;
}
dp_gen_cts_frame(ppdu_info, peer,
tx_capture_info.mpdu_nbuf);
dp_peer_unref_del_find_by_id(peer);
dp_wdi_event_handler(WDI_EVENT_TX_DATA, pdev->soc,
&tx_capture_info, HTT_INVALID_PEER,
WDI_NO_VAL, pdev->pdev_id);
return QDF_STATUS_SUCCESS;
}
/**
* dp_send_ack_frame_to_stack(): Function to generate BA or ACK frame and
* send to upper layer on received unicast frame
@@ -3303,6 +3406,10 @@ QDF_STATUS dp_send_ack_frame_to_stack(struct dp_soc *soc,
return QDF_STATUS_SUCCESS;
}
if (ppdu_info->sw_frame_group_id ==
HAL_MPDU_SW_FRAME_GROUP_CTRL_RTS)
return dp_send_cts_frame_to_stack(soc, pdev, ppdu_info);
if (ppdu_info->sw_frame_group_id == HAL_MPDU_SW_FRAME_GROUP_CTRL_BAR)
bar_frame = true;
else