samsung-sm8650/android_kernel_samsung_sm8650-modules
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

qca-wifi: Add support for noAck frames for TX capture

Browse Source 
noACK action frames are generated in response to NDPA
frames.

Change-Id: Ib441041353050e7a4736e1e5830dbfd5d08e0f50
CRs-Fixed: 2622583
This commit is contained in:
Amit Shukla
2020-02-14 15:05:42 -08:00
parent 95744c646d
commit bc3ff96089
2 changed files with 200 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

188
dp/wifi3.0/dp_tx_capture.c
View File

@@ -36,6 +36,7 @@
#define DP_BA_ACK_FRAME_SIZE (sizeof(struct ieee80211_ctlframe_addr2) + 36)
#define DP_ACK_FRAME_SIZE (sizeof(struct ieee80211_frame_min_one))
#define DP_CTS_FRAME_SIZE (sizeof(struct ieee80211_frame_min_one))
#define DP_ACKNOACK_FRAME_SIZE (sizeof(struct ieee80211_frame) + 16)
#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)
@@ -47,6 +48,11 @@
#define INVALID_PPDU_ID 0xFFFF
#define MAX_END_TSF 0xFFFFFFFF
#define DP_IEEE80211_CATEGORY_VHT (21)
#define DP_NOACK_SOUNDING_TOKEN_POS (4)
#define DP_NOACK_STOKEN_POS_SHIFT (2)
#define DP_NDPA_TOKEN_POS (16)
/* Macros to handle sequence number bitmaps */
/* HW generated rts frame flag */
@@ -3651,7 +3657,9 @@ 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_MGMT_BEACON)
HAL_MPDU_SW_FRAME_GROUP_MGMT_BEACON ||
ppdu_info->sw_frame_group_id ==
HAL_MPDU_SW_FRAME_GROUP_CTRL_NDPA)
return QDF_STATUS_SUCCESS;
if (ppdu_info->sw_frame_group_id == HAL_MPDU_SW_FRAME_GROUP_MGMT_PROBE_REQ &&
@@ -3771,6 +3779,184 @@ QDF_STATUS dp_send_ack_frame_to_stack(struct dp_soc *soc,
return QDF_STATUS_SUCCESS;
}
/**
* dp_gen_noack_frame: generate noack Action frame by using parameters
* from received NDPA frame
* @ppdu_info: pointer to ppdu_info
* @peer: pointer to peer structure
* @mpdu_nbuf: buffer for the generated noack frame
* @mon_mpdu: mpdu from monitor destination path
*
* Return: QDF_STATUS
*/
static void dp_gen_noack_frame(struct hal_rx_ppdu_info *ppdu_info,
struct dp_peer *peer, qdf_nbuf_t mpdu_nbuf,
qdf_nbuf_t mon_mpdu)
{
struct ieee80211_frame *wh;
uint16_t duration;
struct dp_vdev *vdev = NULL;
char *ndpa_buf = qdf_nbuf_data(mon_mpdu);
uint8_t token = 0;
uint8_t *frm;
wh = (struct ieee80211_frame *)qdf_nbuf_data(mpdu_nbuf);
qdf_mem_zero(((char *)wh), DP_ACKNOACK_FRAME_SIZE);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 |
IEEE80211_FC0_TYPE_MGT |
IEEE80211_FCO_SUBTYPE_ACTION_NO_ACK;
qdf_mem_copy(wh->i_addr1, &peer->mac_addr.raw[0], QDF_MAC_ADDR_SIZE);
vdev = peer->vdev;
if (vdev) {
qdf_mem_copy(wh->i_addr2,
vdev->mac_addr.raw,
QDF_MAC_ADDR_SIZE);
qdf_mem_copy(wh->i_addr3,
vdev->mac_addr.raw,
QDF_MAC_ADDR_SIZE);
}
duration = (ppdu_info->rx_status.duration > SIFS_INTERVAL) ?
ppdu_info->rx_status.duration - SIFS_INTERVAL : 0;
wh->i_dur[0] = duration & 0xff;
wh->i_dur[1] = (duration >> 8) & 0xff;
frm = (uint8_t *)&wh[1];
/*
* Update category field
*/
*frm = DP_IEEE80211_CATEGORY_VHT;
/*
* Update sounding token obtained from NDPA,
* shift to get upper six bits
*/
frm += DP_NOACK_SOUNDING_TOKEN_POS;
token = ndpa_buf[DP_NDPA_TOKEN_POS] >> DP_NOACK_STOKEN_POS_SHIFT;
*frm = (token) << DP_NOACK_STOKEN_POS_SHIFT;
qdf_nbuf_set_pktlen(mpdu_nbuf, DP_ACKNOACK_FRAME_SIZE);
}
/**
* dp_send_noack_frame_to_stack: Sends noack Action frame to upper stack
* in response to received NDPA frame.
* @soc: SoC handle
* @pdev: PDEV pointer
* @mon_mpdu: mpdu from monitor destination path
*
* Return: QDF_STATUS
*/
QDF_STATUS dp_send_noack_frame_to_stack(struct dp_soc *soc,
struct dp_pdev *pdev,
qdf_nbuf_t mon_mpdu)
{
struct hal_rx_ppdu_info *ppdu_info = &pdev->ppdu_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;
struct cdp_tx_indication_info tx_capture_info;
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, peer->mac_addr.raw)) {
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_ACKNOACK_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_noack_frame(ppdu_info, peer,
tx_capture_info.mpdu_nbuf, mon_mpdu);
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_handle_tx_capture_from_dest: Handle any TX capture frames from
* monitor destination path.
* @soc: SoC handle
* @pdev: PDEV pointer
* @mon_mpdu: mpdu from monitor destination path
*
* Return: QDF_STATUS
*/
QDF_STATUS dp_handle_tx_capture_from_dest(struct dp_soc *soc,
struct dp_pdev *pdev,
qdf_nbuf_t mon_mpdu)
{
struct hal_rx_ppdu_info *ppdu_info = &pdev->ppdu_info;
/*
* The below switch case can be extended to
* add more frame types as needed
*/
switch (ppdu_info->sw_frame_group_id) {
case HAL_MPDU_SW_FRAME_GROUP_CTRL_NDPA:
return dp_send_noack_frame_to_stack(soc, pdev, mon_mpdu);
default:
break;
}
return QDF_STATUS_SUCCESS;
}
/**
* dp_peer_set_tx_capture_enabled: Set tx_cap_enabled bit in peer
* @pdev: DP PDEV handle