summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn-lib.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn-lib.c252
1 files changed, 79 insertions, 173 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index 1004cfc403b..548f51d92de 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -77,7 +77,7 @@ static int iwlagn_tx_status_reply_tx(struct iwl_priv *priv,
IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, StartIdx=%d idx=%d\n",
agg->frame_count, agg->start_idx, idx);
- info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
+ info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb);
info->status.rates[0].count = tx_resp->failure_frame + 1;
info->flags &= ~IEEE80211_TX_CTL_AMPDU;
info->flags |= iwl_tx_status_to_mac80211(status);
@@ -93,6 +93,12 @@ static int iwlagn_tx_status_reply_tx(struct iwl_priv *priv,
} else {
/* Two or more frames were attempted; expect block-ack */
u64 bitmap = 0;
+
+ /*
+ * Start is the lowest frame sent. It may not be the first
+ * frame in the batch; we figure this out dynamically during
+ * the following loop.
+ */
int start = agg->start_idx;
/* Construct bit-map of pending frames within Tx window */
@@ -131,25 +137,58 @@ static int iwlagn_tx_status_reply_tx(struct iwl_priv *priv,
IWL_DEBUG_TX_REPLY(priv, "AGG Frame i=%d idx %d seq=%d\n",
i, idx, SEQ_TO_SN(sc));
+ /*
+ * sh -> how many frames ahead of the starting frame is
+ * the current one?
+ *
+ * Note that all frames sent in the batch must be in a
+ * 64-frame window, so this number should be in [0,63].
+ * If outside of this window, then we've found a new
+ * "first" frame in the batch and need to change start.
+ */
sh = idx - start;
- if (sh > 64) {
- sh = (start - idx) + 0xff;
+
+ /*
+ * If >= 64, out of window. start must be at the front
+ * of the circular buffer, idx must be near the end of
+ * the buffer, and idx is the new "first" frame. Shift
+ * the indices around.
+ */
+ if (sh >= 64) {
+ /* Shift bitmap by start - idx, wrapped */
+ sh = 0x100 - idx + start;
bitmap = bitmap << sh;
+ /* Now idx is the new start so sh = 0 */
sh = 0;
start = idx;
- } else if (sh < -64)
- sh = 0xff - (start - idx);
- else if (sh < 0) {
+ /*
+ * If <= -64 then wraps the 256-pkt circular buffer
+ * (e.g., start = 255 and idx = 0, sh should be 1)
+ */
+ } else if (sh <= -64) {
+ sh = 0x100 - start + idx;
+ /*
+ * If < 0 but > -64, out of window. idx is before start
+ * but not wrapped. Shift the indices around.
+ */
+ } else if (sh < 0) {
+ /* Shift by how far start is ahead of idx */
sh = start - idx;
- start = idx;
bitmap = bitmap << sh;
+ /* Now idx is the new start so sh = 0 */
+ start = idx;
sh = 0;
}
+ /* Sequence number start + sh was sent in this batch */
bitmap |= 1ULL << sh;
IWL_DEBUG_TX_REPLY(priv, "start=%d bitmap=0x%llx\n",
start, (unsigned long long)bitmap);
}
+ /*
+ * Store the bitmap and possibly the new start, if we wrapped
+ * the buffer above
+ */
agg->bitmap = bitmap;
agg->start_idx = start;
IWL_DEBUG_TX_REPLY(priv, "Frames %d start_idx=%d bitmap=0x%llx\n",
@@ -184,6 +223,7 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv,
int tid;
int sta_id;
int freed;
+ unsigned long flags;
if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
@@ -193,15 +233,16 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv,
return;
}
- info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
+ info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb);
memset(&info->status, 0, sizeof(info->status));
tid = (tx_resp->ra_tid & IWL50_TX_RES_TID_MSK) >> IWL50_TX_RES_TID_POS;
sta_id = (tx_resp->ra_tid & IWL50_TX_RES_RA_MSK) >> IWL50_TX_RES_RA_POS;
+ spin_lock_irqsave(&priv->sta_lock, flags);
if (txq->sched_retry) {
const u32 scd_ssn = iwlagn_get_scd_ssn(tx_resp);
- struct iwl_ht_agg *agg = NULL;
+ struct iwl_ht_agg *agg;
agg = &priv->stations[sta_id].tid[tid].agg;
@@ -256,6 +297,7 @@ static void iwlagn_rx_reply_tx(struct iwl_priv *priv,
iwlagn_txq_check_empty(priv, sta_id, tid, txq_id);
iwl_check_abort_status(priv, tx_resp->frame_count, status);
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
}
void iwlagn_rx_handler_setup(struct iwl_priv *priv)
@@ -755,132 +797,6 @@ static inline int iwlagn_calc_rssi(struct iwl_priv *priv,
return priv->cfg->ops->utils->calc_rssi(priv, rx_resp);
}
-#ifdef CONFIG_IWLWIFI_DEBUG
-/**
- * iwlagn_dbg_report_frame - dump frame to syslog during debug sessions
- *
- * You may hack this function to show different aspects of received frames,
- * including selective frame dumps.
- * group100 parameter selects whether to show 1 out of 100 good data frames.
- * All beacon and probe response frames are printed.
- */
-static void iwlagn_dbg_report_frame(struct iwl_priv *priv,
- struct iwl_rx_phy_res *phy_res, u16 length,
- struct ieee80211_hdr *header, int group100)
-{
- u32 to_us;
- u32 print_summary = 0;
- u32 print_dump = 0; /* set to 1 to dump all frames' contents */
- u32 hundred = 0;
- u32 dataframe = 0;
- __le16 fc;
- u16 seq_ctl;
- u16 channel;
- u16 phy_flags;
- u32 rate_n_flags;
- u32 tsf_low;
- int rssi;
-
- if (likely(!(iwl_get_debug_level(priv) & IWL_DL_RX)))
- return;
-
- /* MAC header */
- fc = header->frame_control;
- seq_ctl = le16_to_cpu(header->seq_ctrl);
-
- /* metadata */
- channel = le16_to_cpu(phy_res->channel);
- phy_flags = le16_to_cpu(phy_res->phy_flags);
- rate_n_flags = le32_to_cpu(phy_res->rate_n_flags);
-
- /* signal statistics */
- rssi = iwlagn_calc_rssi(priv, phy_res);
- tsf_low = le64_to_cpu(phy_res->timestamp) & 0x0ffffffff;
-
- to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
-
- /* if data frame is to us and all is good,
- * (optionally) print summary for only 1 out of every 100 */
- if (to_us && (fc & ~cpu_to_le16(IEEE80211_FCTL_PROTECTED)) ==
- cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
- dataframe = 1;
- if (!group100)
- print_summary = 1; /* print each frame */
- else if (priv->framecnt_to_us < 100) {
- priv->framecnt_to_us++;
- print_summary = 0;
- } else {
- priv->framecnt_to_us = 0;
- print_summary = 1;
- hundred = 1;
- }
- } else {
- /* print summary for all other frames */
- print_summary = 1;
- }
-
- if (print_summary) {
- char *title;
- int rate_idx;
- u32 bitrate;
-
- if (hundred)
- title = "100Frames";
- else if (ieee80211_has_retry(fc))
- title = "Retry";
- else if (ieee80211_is_assoc_resp(fc))
- title = "AscRsp";
- else if (ieee80211_is_reassoc_resp(fc))
- title = "RasRsp";
- else if (ieee80211_is_probe_resp(fc)) {
- title = "PrbRsp";
- print_dump = 1; /* dump frame contents */
- } else if (ieee80211_is_beacon(fc)) {
- title = "Beacon";
- print_dump = 1; /* dump frame contents */
- } else if (ieee80211_is_atim(fc))
- title = "ATIM";
- else if (ieee80211_is_auth(fc))
- title = "Auth";
- else if (ieee80211_is_deauth(fc))
- title = "DeAuth";
- else if (ieee80211_is_disassoc(fc))
- title = "DisAssoc";
- else
- title = "Frame";
-
- rate_idx = iwl_hwrate_to_plcp_idx(rate_n_flags);
- if (unlikely((rate_idx < 0) || (rate_idx >= IWL_RATE_COUNT))) {
- bitrate = 0;
- WARN_ON_ONCE(1);
- } else {
- bitrate = iwl_rates[rate_idx].ieee / 2;
- }
-
- /* print frame summary.
- * MAC addresses show just the last byte (for brevity),
- * but you can hack it to show more, if you'd like to. */
- if (dataframe)
- IWL_DEBUG_RX(priv, "%s: mhd=0x%04x, dst=0x%02x, "
- "len=%u, rssi=%d, chnl=%d, rate=%u,\n",
- title, le16_to_cpu(fc), header->addr1[5],
- length, rssi, channel, bitrate);
- else {
- /* src/dst addresses assume managed mode */
- IWL_DEBUG_RX(priv, "%s: 0x%04x, dst=0x%02x, src=0x%02x, "
- "len=%u, rssi=%d, tim=%lu usec, "
- "phy=0x%02x, chnl=%d\n",
- title, le16_to_cpu(fc), header->addr1[5],
- header->addr3[5], length, rssi,
- tsf_low - priv->scan_start_tsf,
- phy_flags, channel);
- }
- }
- if (print_dump)
- iwl_print_hex_dump(priv, IWL_DL_RX, header, length);
-}
-#endif
-
static u32 iwlagn_translate_rx_status(struct iwl_priv *priv, u32 decrypt_in)
{
u32 decrypt_out = 0;
@@ -1060,11 +976,6 @@ void iwlagn_rx_reply_rx(struct iwl_priv *priv,
/* Find max signal strength (dBm) among 3 antenna/receiver chains */
rx_status.signal = iwlagn_calc_rssi(priv, phy_res);
-#ifdef CONFIG_IWLWIFI_DEBUG
- /* Set "1" to report good data frames in groups of 100 */
- if (unlikely(iwl_get_debug_level(priv) & IWL_DL_RX))
- iwlagn_dbg_report_frame(priv, phy_res, len, header, 1);
-#endif
iwl_dbg_log_rx_data_frame(priv, len, header);
IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, TSF %llu\n",
rx_status.signal, (unsigned long long)rx_status.mactime);
@@ -1119,10 +1030,9 @@ static int iwl_get_single_channel_for_scan(struct iwl_priv *priv,
struct iwl_scan_channel *scan_ch)
{
const struct ieee80211_supported_band *sband;
- const struct iwl_channel_info *ch_info;
u16 passive_dwell = 0;
u16 active_dwell = 0;
- int i, added = 0;
+ int added = 0;
u16 channel = 0;
sband = iwl_get_hw_mode(priv, band);
@@ -1137,32 +1047,7 @@ static int iwl_get_single_channel_for_scan(struct iwl_priv *priv,
if (passive_dwell <= active_dwell)
passive_dwell = active_dwell + 1;
- /* only scan single channel, good enough to reset the RF */
- /* pick the first valid not in-use channel */
- if (band == IEEE80211_BAND_5GHZ) {
- for (i = 14; i < priv->channel_count; i++) {
- if (priv->channel_info[i].channel !=
- le16_to_cpu(priv->staging_rxon.channel)) {
- channel = priv->channel_info[i].channel;
- ch_info = iwl_get_channel_info(priv,
- band, channel);
- if (is_channel_valid(ch_info))
- break;
- }
- }
- } else {
- for (i = 0; i < 14; i++) {
- if (priv->channel_info[i].channel !=
- le16_to_cpu(priv->staging_rxon.channel)) {
- channel =
- priv->channel_info[i].channel;
- ch_info = iwl_get_channel_info(priv,
- band, channel);
- if (is_channel_valid(ch_info))
- break;
- }
- }
- }
+ channel = iwl_get_single_channel_number(priv, band);
if (channel) {
scan_ch->channel = cpu_to_le16(channel);
scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE;
@@ -1278,6 +1163,7 @@ void iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
bool is_active = false;
int chan_mod;
u8 active_chains;
+ u8 scan_tx_antennas = priv->hw_params.valid_tx_ant;
conf = ieee80211_get_hw_conf(priv->hw);
@@ -1429,11 +1315,14 @@ void iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
band = priv->scan_band;
- if (priv->cfg->scan_antennas[band])
- rx_ant = priv->cfg->scan_antennas[band];
+ if (priv->cfg->scan_rx_antennas[band])
+ rx_ant = priv->cfg->scan_rx_antennas[band];
- priv->scan_tx_ant[band] =
- iwl_toggle_tx_ant(priv, priv->scan_tx_ant[band]);
+ if (priv->cfg->scan_tx_antennas[band])
+ scan_tx_antennas = priv->cfg->scan_tx_antennas[band];
+
+ priv->scan_tx_ant[band] = iwl_toggle_tx_ant(priv, priv->scan_tx_ant[band],
+ scan_tx_antennas);
rate_flags |= iwl_ant_idx_to_flags(priv->scan_tx_ant[band]);
scan->tx_cmd.rate_n_flags = iwl_hw_set_rate_n_flags(rate, rate_flags);
@@ -1459,13 +1348,15 @@ void iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
if (!priv->is_internal_short_scan) {
cmd_len = iwl_fill_probe_req(priv,
(struct ieee80211_mgmt *)scan->data,
+ vif->addr,
priv->scan_request->ie,
priv->scan_request->ie_len,
IWL_MAX_SCAN_SIZE - sizeof(*scan));
} else {
+ /* use bcast addr, will not be transmitted but must be valid */
cmd_len = iwl_fill_probe_req(priv,
(struct ieee80211_mgmt *)scan->data,
- NULL, 0,
+ iwl_bcast_addr, NULL, 0,
IWL_MAX_SCAN_SIZE - sizeof(*scan));
}
@@ -1528,3 +1419,18 @@ int iwlagn_manage_ibss_station(struct iwl_priv *priv,
return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
vif->bss_conf.bssid);
}
+
+void iwl_free_tfds_in_queue(struct iwl_priv *priv,
+ int sta_id, int tid, int freed)
+{
+ WARN_ON(!spin_is_locked(&priv->sta_lock));
+
+ if (priv->stations[sta_id].tid[tid].tfds_in_queue >= freed)
+ priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
+ else {
+ IWL_DEBUG_TX(priv, "free more than tfds_in_queue (%u:%d)\n",
+ priv->stations[sta_id].tid[tid].tfds_in_queue,
+ freed);
+ priv->stations[sta_id].tid[tid].tfds_in_queue = 0;
+ }
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-21 10:29:57 +0000