--- /dev/null
+/******************************************************************************
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ * Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *****************************************************************************/
+
+#include "iwl-3945-debugfs.h"
+
+
+static int il3945_stats_flag(struct il_priv *il, char *buf, int bufsz)
+{
+ int p = 0;
+
+ p += scnprintf(buf + p, bufsz - p, "Statistics Flag(0x%X):\n",
+ le32_to_cpu(il->_3945.stats.flag));
+ if (le32_to_cpu(il->_3945.stats.flag) &
+ UCODE_STATISTICS_CLEAR_MSK)
+ p += scnprintf(buf + p, bufsz - p,
+ "\tStatistics have been cleared\n");
+ p += scnprintf(buf + p, bufsz - p, "\tOperational Frequency: %s\n",
+ (le32_to_cpu(il->_3945.stats.flag) &
+ UCODE_STATISTICS_FREQUENCY_MSK)
+ ? "2.4 GHz" : "5.2 GHz");
+ p += scnprintf(buf + p, bufsz - p, "\tTGj Narrow Band: %s\n",
+ (le32_to_cpu(il->_3945.stats.flag) &
+ UCODE_STATISTICS_NARROW_BAND_MSK)
+ ? "enabled" : "disabled");
+ return p;
+}
+
+ssize_t il3945_ucode_rx_stats_read(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct il_priv *il = file->private_data;
+ int pos = 0;
+ char *buf;
+ int bufsz = sizeof(struct iwl39_stats_rx_phy) * 40 +
+ sizeof(struct iwl39_stats_rx_non_phy) * 40 + 400;
+ ssize_t ret;
+ struct iwl39_stats_rx_phy *ofdm, *accum_ofdm, *delta_ofdm,
+ *max_ofdm;
+ struct iwl39_stats_rx_phy *cck, *accum_cck, *delta_cck, *max_cck;
+ struct iwl39_stats_rx_non_phy *general, *accum_general;
+ struct iwl39_stats_rx_non_phy *delta_general, *max_general;
+
+ if (!il_is_alive(il))
+ return -EAGAIN;
+
+ buf = kzalloc(bufsz, GFP_KERNEL);
+ if (!buf) {
+ IL_ERR("Can not allocate Buffer\n");
+ return -ENOMEM;
+ }
+
+ /*
+ * The statistic information display here is based on
+ * the last stats notification from uCode
+ * might not reflect the current uCode activity
+ */
+ ofdm = &il->_3945.stats.rx.ofdm;
+ cck = &il->_3945.stats.rx.cck;
+ general = &il->_3945.stats.rx.general;
+ accum_ofdm = &il->_3945.accum_stats.rx.ofdm;
+ accum_cck = &il->_3945.accum_stats.rx.cck;
+ accum_general = &il->_3945.accum_stats.rx.general;
+ delta_ofdm = &il->_3945.delta_stats.rx.ofdm;
+ delta_cck = &il->_3945.delta_stats.rx.cck;
+ delta_general = &il->_3945.delta_stats.rx.general;
+ max_ofdm = &il->_3945.max_delta.rx.ofdm;
+ max_cck = &il->_3945.max_delta.rx.cck;
+ max_general = &il->_3945.max_delta.rx.general;
+
+ pos += il3945_stats_flag(il, buf, bufsz);
+ pos += scnprintf(buf + pos, bufsz - pos, "%-32s current"
+ "acumulative delta max\n",
+ "Statistics_Rx - OFDM:");
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "ina_cnt:", le32_to_cpu(ofdm->ina_cnt),
+ accum_ofdm->ina_cnt,
+ delta_ofdm->ina_cnt, max_ofdm->ina_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "fina_cnt:",
+ le32_to_cpu(ofdm->fina_cnt), accum_ofdm->fina_cnt,
+ delta_ofdm->fina_cnt, max_ofdm->fina_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n", "plcp_err:",
+ le32_to_cpu(ofdm->plcp_err), accum_ofdm->plcp_err,
+ delta_ofdm->plcp_err, max_ofdm->plcp_err);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n", "crc32_err:",
+ le32_to_cpu(ofdm->crc32_err), accum_ofdm->crc32_err,
+ delta_ofdm->crc32_err, max_ofdm->crc32_err);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n", "overrun_err:",
+ le32_to_cpu(ofdm->overrun_err),
+ accum_ofdm->overrun_err, delta_ofdm->overrun_err,
+ max_ofdm->overrun_err);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "early_overrun_err:",
+ le32_to_cpu(ofdm->early_overrun_err),
+ accum_ofdm->early_overrun_err,
+ delta_ofdm->early_overrun_err,
+ max_ofdm->early_overrun_err);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "crc32_good:", le32_to_cpu(ofdm->crc32_good),
+ accum_ofdm->crc32_good, delta_ofdm->crc32_good,
+ max_ofdm->crc32_good);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n", "false_alarm_cnt:",
+ le32_to_cpu(ofdm->false_alarm_cnt),
+ accum_ofdm->false_alarm_cnt,
+ delta_ofdm->false_alarm_cnt,
+ max_ofdm->false_alarm_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "fina_sync_err_cnt:",
+ le32_to_cpu(ofdm->fina_sync_err_cnt),
+ accum_ofdm->fina_sync_err_cnt,
+ delta_ofdm->fina_sync_err_cnt,
+ max_ofdm->fina_sync_err_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "sfd_timeout:",
+ le32_to_cpu(ofdm->sfd_timeout),
+ accum_ofdm->sfd_timeout,
+ delta_ofdm->sfd_timeout,
+ max_ofdm->sfd_timeout);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "fina_timeout:",
+ le32_to_cpu(ofdm->fina_timeout),
+ accum_ofdm->fina_timeout,
+ delta_ofdm->fina_timeout,
+ max_ofdm->fina_timeout);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "unresponded_rts:",
+ le32_to_cpu(ofdm->unresponded_rts),
+ accum_ofdm->unresponded_rts,
+ delta_ofdm->unresponded_rts,
+ max_ofdm->unresponded_rts);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "rxe_frame_lmt_ovrun:",
+ le32_to_cpu(ofdm->rxe_frame_limit_overrun),
+ accum_ofdm->rxe_frame_limit_overrun,
+ delta_ofdm->rxe_frame_limit_overrun,
+ max_ofdm->rxe_frame_limit_overrun);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "sent_ack_cnt:",
+ le32_to_cpu(ofdm->sent_ack_cnt),
+ accum_ofdm->sent_ack_cnt,
+ delta_ofdm->sent_ack_cnt,
+ max_ofdm->sent_ack_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "sent_cts_cnt:",
+ le32_to_cpu(ofdm->sent_cts_cnt),
+ accum_ofdm->sent_cts_cnt,
+ delta_ofdm->sent_cts_cnt, max_ofdm->sent_cts_cnt);
+
+ pos += scnprintf(buf + pos, bufsz - pos, "%-32s current"
+ "acumulative delta max\n",
+ "Statistics_Rx - CCK:");
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "ina_cnt:",
+ le32_to_cpu(cck->ina_cnt), accum_cck->ina_cnt,
+ delta_cck->ina_cnt, max_cck->ina_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "fina_cnt:",
+ le32_to_cpu(cck->fina_cnt), accum_cck->fina_cnt,
+ delta_cck->fina_cnt, max_cck->fina_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "plcp_err:",
+ le32_to_cpu(cck->plcp_err), accum_cck->plcp_err,
+ delta_cck->plcp_err, max_cck->plcp_err);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "crc32_err:",
+ le32_to_cpu(cck->crc32_err), accum_cck->crc32_err,
+ delta_cck->crc32_err, max_cck->crc32_err);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "overrun_err:",
+ le32_to_cpu(cck->overrun_err),
+ accum_cck->overrun_err,
+ delta_cck->overrun_err, max_cck->overrun_err);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "early_overrun_err:",
+ le32_to_cpu(cck->early_overrun_err),
+ accum_cck->early_overrun_err,
+ delta_cck->early_overrun_err,
+ max_cck->early_overrun_err);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "crc32_good:",
+ le32_to_cpu(cck->crc32_good), accum_cck->crc32_good,
+ delta_cck->crc32_good,
+ max_cck->crc32_good);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "false_alarm_cnt:",
+ le32_to_cpu(cck->false_alarm_cnt),
+ accum_cck->false_alarm_cnt,
+ delta_cck->false_alarm_cnt, max_cck->false_alarm_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "fina_sync_err_cnt:",
+ le32_to_cpu(cck->fina_sync_err_cnt),
+ accum_cck->fina_sync_err_cnt,
+ delta_cck->fina_sync_err_cnt,
+ max_cck->fina_sync_err_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "sfd_timeout:",
+ le32_to_cpu(cck->sfd_timeout),
+ accum_cck->sfd_timeout,
+ delta_cck->sfd_timeout, max_cck->sfd_timeout);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "fina_timeout:",
+ le32_to_cpu(cck->fina_timeout),
+ accum_cck->fina_timeout,
+ delta_cck->fina_timeout, max_cck->fina_timeout);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "unresponded_rts:",
+ le32_to_cpu(cck->unresponded_rts),
+ accum_cck->unresponded_rts,
+ delta_cck->unresponded_rts,
+ max_cck->unresponded_rts);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "rxe_frame_lmt_ovrun:",
+ le32_to_cpu(cck->rxe_frame_limit_overrun),
+ accum_cck->rxe_frame_limit_overrun,
+ delta_cck->rxe_frame_limit_overrun,
+ max_cck->rxe_frame_limit_overrun);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "sent_ack_cnt:",
+ le32_to_cpu(cck->sent_ack_cnt),
+ accum_cck->sent_ack_cnt,
+ delta_cck->sent_ack_cnt,
+ max_cck->sent_ack_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "sent_cts_cnt:",
+ le32_to_cpu(cck->sent_cts_cnt),
+ accum_cck->sent_cts_cnt,
+ delta_cck->sent_cts_cnt,
+ max_cck->sent_cts_cnt);
+
+ pos += scnprintf(buf + pos, bufsz - pos, "%-32s current"
+ "acumulative delta max\n",
+ "Statistics_Rx - GENERAL:");
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "bogus_cts:",
+ le32_to_cpu(general->bogus_cts),
+ accum_general->bogus_cts,
+ delta_general->bogus_cts, max_general->bogus_cts);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "bogus_ack:",
+ le32_to_cpu(general->bogus_ack),
+ accum_general->bogus_ack,
+ delta_general->bogus_ack, max_general->bogus_ack);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "non_bssid_frames:",
+ le32_to_cpu(general->non_bssid_frames),
+ accum_general->non_bssid_frames,
+ delta_general->non_bssid_frames,
+ max_general->non_bssid_frames);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "filtered_frames:",
+ le32_to_cpu(general->filtered_frames),
+ accum_general->filtered_frames,
+ delta_general->filtered_frames,
+ max_general->filtered_frames);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "non_channel_beacons:",
+ le32_to_cpu(general->non_channel_beacons),
+ accum_general->non_channel_beacons,
+ delta_general->non_channel_beacons,
+ max_general->non_channel_beacons);
+
+ ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+ kfree(buf);
+ return ret;
+}
+
+ssize_t il3945_ucode_tx_stats_read(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct il_priv *il = file->private_data;
+ int pos = 0;
+ char *buf;
+ int bufsz = (sizeof(struct iwl39_stats_tx) * 48) + 250;
+ ssize_t ret;
+ struct iwl39_stats_tx *tx, *accum_tx, *delta_tx, *max_tx;
+
+ if (!il_is_alive(il))
+ return -EAGAIN;
+
+ buf = kzalloc(bufsz, GFP_KERNEL);
+ if (!buf) {
+ IL_ERR("Can not allocate Buffer\n");
+ return -ENOMEM;
+ }
+
+ /*
+ * The statistic information display here is based on
+ * the last stats notification from uCode
+ * might not reflect the current uCode activity
+ */
+ tx = &il->_3945.stats.tx;
+ accum_tx = &il->_3945.accum_stats.tx;
+ delta_tx = &il->_3945.delta_stats.tx;
+ max_tx = &il->_3945.max_delta.tx;
+ pos += il3945_stats_flag(il, buf, bufsz);
+ pos += scnprintf(buf + pos, bufsz - pos, "%-32s current"
+ "acumulative delta max\n",
+ "Statistics_Tx:");
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "preamble:",
+ le32_to_cpu(tx->preamble_cnt),
+ accum_tx->preamble_cnt,
+ delta_tx->preamble_cnt, max_tx->preamble_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "rx_detected_cnt:",
+ le32_to_cpu(tx->rx_detected_cnt),
+ accum_tx->rx_detected_cnt,
+ delta_tx->rx_detected_cnt, max_tx->rx_detected_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "bt_prio_defer_cnt:",
+ le32_to_cpu(tx->bt_prio_defer_cnt),
+ accum_tx->bt_prio_defer_cnt,
+ delta_tx->bt_prio_defer_cnt,
+ max_tx->bt_prio_defer_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "bt_prio_kill_cnt:",
+ le32_to_cpu(tx->bt_prio_kill_cnt),
+ accum_tx->bt_prio_kill_cnt,
+ delta_tx->bt_prio_kill_cnt,
+ max_tx->bt_prio_kill_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "few_bytes_cnt:",
+ le32_to_cpu(tx->few_bytes_cnt),
+ accum_tx->few_bytes_cnt,
+ delta_tx->few_bytes_cnt, max_tx->few_bytes_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "cts_timeout:",
+ le32_to_cpu(tx->cts_timeout), accum_tx->cts_timeout,
+ delta_tx->cts_timeout, max_tx->cts_timeout);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "ack_timeout:",
+ le32_to_cpu(tx->ack_timeout),
+ accum_tx->ack_timeout,
+ delta_tx->ack_timeout, max_tx->ack_timeout);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "expected_ack_cnt:",
+ le32_to_cpu(tx->expected_ack_cnt),
+ accum_tx->expected_ack_cnt,
+ delta_tx->expected_ack_cnt,
+ max_tx->expected_ack_cnt);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "actual_ack_cnt:",
+ le32_to_cpu(tx->actual_ack_cnt),
+ accum_tx->actual_ack_cnt,
+ delta_tx->actual_ack_cnt,
+ max_tx->actual_ack_cnt);
+
+ ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+ kfree(buf);
+ return ret;
+}
+
+ssize_t il3945_ucode_general_stats_read(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct il_priv *il = file->private_data;
+ int pos = 0;
+ char *buf;
+ int bufsz = sizeof(struct iwl39_stats_general) * 10 + 300;
+ ssize_t ret;
+ struct iwl39_stats_general *general, *accum_general;
+ struct iwl39_stats_general *delta_general, *max_general;
+ struct stats_dbg *dbg, *accum_dbg, *delta_dbg, *max_dbg;
+ struct iwl39_stats_div *div, *accum_div, *delta_div, *max_div;
+
+ if (!il_is_alive(il))
+ return -EAGAIN;
+
+ buf = kzalloc(bufsz, GFP_KERNEL);
+ if (!buf) {
+ IL_ERR("Can not allocate Buffer\n");
+ return -ENOMEM;
+ }
+
+ /*
+ * The statistic information display here is based on
+ * the last stats notification from uCode
+ * might not reflect the current uCode activity
+ */
+ general = &il->_3945.stats.general;
+ dbg = &il->_3945.stats.general.dbg;
+ div = &il->_3945.stats.general.div;
+ accum_general = &il->_3945.accum_stats.general;
+ delta_general = &il->_3945.delta_stats.general;
+ max_general = &il->_3945.max_delta.general;
+ accum_dbg = &il->_3945.accum_stats.general.dbg;
+ delta_dbg = &il->_3945.delta_stats.general.dbg;
+ max_dbg = &il->_3945.max_delta.general.dbg;
+ accum_div = &il->_3945.accum_stats.general.div;
+ delta_div = &il->_3945.delta_stats.general.div;
+ max_div = &il->_3945.max_delta.general.div;
+ pos += il3945_stats_flag(il, buf, bufsz);
+ pos += scnprintf(buf + pos, bufsz - pos, "%-32s current"
+ "acumulative delta max\n",
+ "Statistics_General:");
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "burst_check:",
+ le32_to_cpu(dbg->burst_check),
+ accum_dbg->burst_check,
+ delta_dbg->burst_check, max_dbg->burst_check);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "burst_count:",
+ le32_to_cpu(dbg->burst_count),
+ accum_dbg->burst_count,
+ delta_dbg->burst_count, max_dbg->burst_count);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "sleep_time:",
+ le32_to_cpu(general->sleep_time),
+ accum_general->sleep_time,
+ delta_general->sleep_time, max_general->sleep_time);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "slots_out:",
+ le32_to_cpu(general->slots_out),
+ accum_general->slots_out,
+ delta_general->slots_out, max_general->slots_out);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "slots_idle:",
+ le32_to_cpu(general->slots_idle),
+ accum_general->slots_idle,
+ delta_general->slots_idle, max_general->slots_idle);
+ pos += scnprintf(buf + pos, bufsz - pos, "ttl_timestamp:\t\t\t%u\n",
+ le32_to_cpu(general->ttl_timestamp));
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "tx_on_a:",
+ le32_to_cpu(div->tx_on_a), accum_div->tx_on_a,
+ delta_div->tx_on_a, max_div->tx_on_a);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "tx_on_b:",
+ le32_to_cpu(div->tx_on_b), accum_div->tx_on_b,
+ delta_div->tx_on_b, max_div->tx_on_b);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "exec_time:",
+ le32_to_cpu(div->exec_time), accum_div->exec_time,
+ delta_div->exec_time, max_div->exec_time);
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " %-30s %10u %10u %10u %10u\n",
+ "probe_time:",
+ le32_to_cpu(div->probe_time), accum_div->probe_time,
+ delta_div->probe_time, max_div->probe_time);
+ ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+ kfree(buf);
+ return ret;
+}
--- /dev/null
+/******************************************************************************
+ *
+ * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ * Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <net/mac80211.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+
+#include <linux/workqueue.h>
+
+#include "iwl-commands.h"
+#include "iwl-3945.h"
+#include "iwl-sta.h"
+
+#define RS_NAME "iwl-3945-rs"
+
+static s32 il3945_expected_tpt_g[RATE_COUNT_3945] = {
+ 7, 13, 35, 58, 0, 0, 76, 104, 130, 168, 191, 202
+};
+
+static s32 il3945_expected_tpt_g_prot[RATE_COUNT_3945] = {
+ 7, 13, 35, 58, 0, 0, 0, 80, 93, 113, 123, 125
+};
+
+static s32 il3945_expected_tpt_a[RATE_COUNT_3945] = {
+ 0, 0, 0, 0, 40, 57, 72, 98, 121, 154, 177, 186
+};
+
+static s32 il3945_expected_tpt_b[RATE_COUNT_3945] = {
+ 7, 13, 35, 58, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+struct il3945_tpt_entry {
+ s8 min_rssi;
+ u8 idx;
+};
+
+static struct il3945_tpt_entry il3945_tpt_table_a[] = {
+ {-60, RATE_54M_IDX},
+ {-64, RATE_48M_IDX},
+ {-72, RATE_36M_IDX},
+ {-80, RATE_24M_IDX},
+ {-84, RATE_18M_IDX},
+ {-85, RATE_12M_IDX},
+ {-87, RATE_9M_IDX},
+ {-89, RATE_6M_IDX}
+};
+
+static struct il3945_tpt_entry il3945_tpt_table_g[] = {
+ {-60, RATE_54M_IDX},
+ {-64, RATE_48M_IDX},
+ {-68, RATE_36M_IDX},
+ {-80, RATE_24M_IDX},
+ {-84, RATE_18M_IDX},
+ {-85, RATE_12M_IDX},
+ {-86, RATE_11M_IDX},
+ {-88, RATE_5M_IDX},
+ {-90, RATE_2M_IDX},
+ {-92, RATE_1M_IDX}
+};
+
+#define RATE_MAX_WINDOW 62
+#define RATE_FLUSH (3*HZ)
+#define RATE_WIN_FLUSH (HZ/2)
+#define IL39_RATE_HIGH_TH 11520
+#define IL_SUCCESS_UP_TH 8960
+#define IL_SUCCESS_DOWN_TH 10880
+#define RATE_MIN_FAILURE_TH 6
+#define RATE_MIN_SUCCESS_TH 8
+#define RATE_DECREASE_TH 1920
+#define RATE_RETRY_TH 15
+
+static u8 il3945_get_rate_idx_by_rssi(s32 rssi, enum ieee80211_band band)
+{
+ u32 idx = 0;
+ u32 table_size = 0;
+ struct il3945_tpt_entry *tpt_table = NULL;
+
+ if (rssi < IL_MIN_RSSI_VAL || rssi > IL_MAX_RSSI_VAL)
+ rssi = IL_MIN_RSSI_VAL;
+
+ switch (band) {
+ case IEEE80211_BAND_2GHZ:
+ tpt_table = il3945_tpt_table_g;
+ table_size = ARRAY_SIZE(il3945_tpt_table_g);
+ break;
+
+ case IEEE80211_BAND_5GHZ:
+ tpt_table = il3945_tpt_table_a;
+ table_size = ARRAY_SIZE(il3945_tpt_table_a);
+ break;
+
+ default:
+ BUG();
+ break;
+ }
+
+ while (idx < table_size && rssi < tpt_table[idx].min_rssi)
+ idx++;
+
+ idx = min(idx, (table_size - 1));
+
+ return tpt_table[idx].idx;
+}
+
+static void il3945_clear_win(struct il3945_rate_scale_data *win)
+{
+ win->data = 0;
+ win->success_counter = 0;
+ win->success_ratio = -1;
+ win->counter = 0;
+ win->average_tpt = IL_INVALID_VALUE;
+ win->stamp = 0;
+}
+
+/**
+ * il3945_rate_scale_flush_wins - flush out the rate scale wins
+ *
+ * Returns the number of wins that have gathered data but were
+ * not flushed. If there were any that were not flushed, then
+ * reschedule the rate flushing routine.
+ */
+static int il3945_rate_scale_flush_wins(struct il3945_rs_sta *rs_sta)
+{
+ int unflushed = 0;
+ int i;
+ unsigned long flags;
+ struct il_priv *il __maybe_unused = rs_sta->il;
+
+ /*
+ * For each rate, if we have collected data on that rate
+ * and it has been more than RATE_WIN_FLUSH
+ * since we flushed, clear out the gathered stats
+ */
+ for (i = 0; i < RATE_COUNT_3945; i++) {
+ if (!rs_sta->win[i].counter)
+ continue;
+
+ spin_lock_irqsave(&rs_sta->lock, flags);
+ if (time_after(jiffies, rs_sta->win[i].stamp +
+ RATE_WIN_FLUSH)) {
+ D_RATE("flushing %d samples of rate "
+ "idx %d\n",
+ rs_sta->win[i].counter, i);
+ il3945_clear_win(&rs_sta->win[i]);
+ } else
+ unflushed++;
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
+ }
+
+ return unflushed;
+}
+
+#define RATE_FLUSH_MAX 5000 /* msec */
+#define RATE_FLUSH_MIN 50 /* msec */
+#define IL_AVERAGE_PACKETS 1500
+
+static void il3945_bg_rate_scale_flush(unsigned long data)
+{
+ struct il3945_rs_sta *rs_sta = (void *)data;
+ struct il_priv *il __maybe_unused = rs_sta->il;
+ int unflushed = 0;
+ unsigned long flags;
+ u32 packet_count, duration, pps;
+
+ D_RATE("enter\n");
+
+ unflushed = il3945_rate_scale_flush_wins(rs_sta);
+
+ spin_lock_irqsave(&rs_sta->lock, flags);
+
+ /* Number of packets Rx'd since last time this timer ran */
+ packet_count = (rs_sta->tx_packets - rs_sta->last_tx_packets) + 1;
+
+ rs_sta->last_tx_packets = rs_sta->tx_packets + 1;
+
+ if (unflushed) {
+ duration =
+ jiffies_to_msecs(jiffies - rs_sta->last_partial_flush);
+
+ D_RATE("Tx'd %d packets in %dms\n",
+ packet_count, duration);
+
+ /* Determine packets per second */
+ if (duration)
+ pps = (packet_count * 1000) / duration;
+ else
+ pps = 0;
+
+ if (pps) {
+ duration = (IL_AVERAGE_PACKETS * 1000) / pps;
+ if (duration < RATE_FLUSH_MIN)
+ duration = RATE_FLUSH_MIN;
+ else if (duration > RATE_FLUSH_MAX)
+ duration = RATE_FLUSH_MAX;
+ } else
+ duration = RATE_FLUSH_MAX;
+
+ rs_sta->flush_time = msecs_to_jiffies(duration);
+
+ D_RATE("new flush period: %d msec ave %d\n",
+ duration, packet_count);
+
+ mod_timer(&rs_sta->rate_scale_flush, jiffies +
+ rs_sta->flush_time);
+
+ rs_sta->last_partial_flush = jiffies;
+ } else {
+ rs_sta->flush_time = RATE_FLUSH;
+ rs_sta->flush_pending = 0;
+ }
+ /* If there weren't any unflushed entries, we don't schedule the timer
+ * to run again */
+
+ rs_sta->last_flush = jiffies;
+
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
+
+ D_RATE("leave\n");
+}
+
+/**
+ * il3945_collect_tx_data - Update the success/failure sliding win
+ *
+ * We keep a sliding win of the last 64 packets transmitted
+ * at this rate. win->data contains the bitmask of successful
+ * packets.
+ */
+static void il3945_collect_tx_data(struct il3945_rs_sta *rs_sta,
+ struct il3945_rate_scale_data *win,
+ int success, int retries, int idx)
+{
+ unsigned long flags;
+ s32 fail_count;
+ struct il_priv *il __maybe_unused = rs_sta->il;
+
+ if (!retries) {
+ D_RATE("leave: retries == 0 -- should be at least 1\n");
+ return;
+ }
+
+ spin_lock_irqsave(&rs_sta->lock, flags);
+
+ /*
+ * Keep track of only the latest 62 tx frame attempts in this rate's
+ * history win; anything older isn't really relevant any more.
+ * If we have filled up the sliding win, drop the oldest attempt;
+ * if the oldest attempt (highest bit in bitmap) shows "success",
+ * subtract "1" from the success counter (this is the main reason
+ * we keep these bitmaps!).
+ * */
+ while (retries > 0) {
+ if (win->counter >= RATE_MAX_WINDOW) {
+
+ /* remove earliest */
+ win->counter = RATE_MAX_WINDOW - 1;
+
+ if (win->data & (1ULL << (RATE_MAX_WINDOW - 1))) {
+ win->data &= ~(1ULL << (RATE_MAX_WINDOW - 1));
+ win->success_counter--;
+ }
+ }
+
+ /* Increment frames-attempted counter */
+ win->counter++;
+
+ /* Shift bitmap by one frame (throw away oldest history),
+ * OR in "1", and increment "success" if this
+ * frame was successful. */
+ win->data <<= 1;
+ if (success > 0) {
+ win->success_counter++;
+ win->data |= 0x1;
+ success--;
+ }
+
+ retries--;
+ }
+
+ /* Calculate current success ratio, avoid divide-by-0! */
+ if (win->counter > 0)
+ win->success_ratio = 128 * (100 * win->success_counter)
+ / win->counter;
+ else
+ win->success_ratio = IL_INVALID_VALUE;
+
+ fail_count = win->counter - win->success_counter;
+
+ /* Calculate average throughput, if we have enough history. */
+ if (fail_count >= RATE_MIN_FAILURE_TH ||
+ win->success_counter >= RATE_MIN_SUCCESS_TH)
+ win->average_tpt = ((win->success_ratio *
+ rs_sta->expected_tpt[idx] + 64) / 128);
+ else
+ win->average_tpt = IL_INVALID_VALUE;
+
+ /* Tag this win as having been updated */
+ win->stamp = jiffies;
+
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
+
+}
+
+/*
+ * Called after adding a new station to initialize rate scaling
+ */
+void il3945_rs_rate_init(struct il_priv *il, struct ieee80211_sta *sta, u8 sta_id)
+{
+ struct ieee80211_hw *hw = il->hw;
+ struct ieee80211_conf *conf = &il->hw->conf;
+ struct il3945_sta_priv *psta;
+ struct il3945_rs_sta *rs_sta;
+ struct ieee80211_supported_band *sband;
+ int i;
+
+ D_INFO("enter\n");
+ if (sta_id == il->ctx.bcast_sta_id)
+ goto out;
+
+ psta = (struct il3945_sta_priv *) sta->drv_priv;
+ rs_sta = &psta->rs_sta;
+ sband = hw->wiphy->bands[conf->channel->band];
+
+ rs_sta->il = il;
+
+ rs_sta->start_rate = RATE_INVALID;
+
+ /* default to just 802.11b */
+ rs_sta->expected_tpt = il3945_expected_tpt_b;
+
+ rs_sta->last_partial_flush = jiffies;
+ rs_sta->last_flush = jiffies;
+ rs_sta->flush_time = RATE_FLUSH;
+ rs_sta->last_tx_packets = 0;
+
+ rs_sta->rate_scale_flush.data = (unsigned long)rs_sta;
+ rs_sta->rate_scale_flush.function = il3945_bg_rate_scale_flush;
+
+ for (i = 0; i < RATE_COUNT_3945; i++)
+ il3945_clear_win(&rs_sta->win[i]);
+
+ /* TODO: what is a good starting rate for STA? About middle? Maybe not
+ * the lowest or the highest rate.. Could consider using RSSI from
+ * previous packets? Need to have IEEE 802.1X auth succeed immediately
+ * after assoc.. */
+
+ for (i = sband->n_bitrates - 1; i >= 0; i--) {
+ if (sta->supp_rates[sband->band] & (1 << i)) {
+ rs_sta->last_txrate_idx = i;
+ break;
+ }
+ }
+
+ il->_3945.sta_supp_rates = sta->supp_rates[sband->band];
+ /* For 5 GHz band it start at IL_FIRST_OFDM_RATE */
+ if (sband->band == IEEE80211_BAND_5GHZ) {
+ rs_sta->last_txrate_idx += IL_FIRST_OFDM_RATE;
+ il->_3945.sta_supp_rates = il->_3945.sta_supp_rates <<
+ IL_FIRST_OFDM_RATE;
+ }
+
+out:
+ il->stations[sta_id].used &= ~IL_STA_UCODE_INPROGRESS;
+
+ D_INFO("leave\n");
+}
+
+static void *il3945_rs_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
+{
+ return hw->priv;
+}
+
+/* rate scale requires free function to be implemented */
+static void il3945_rs_free(void *il)
+{
+ return;
+}
+
+static void *il3945_rs_alloc_sta(void *il_priv, struct ieee80211_sta *sta, gfp_t gfp)
+{
+ struct il3945_rs_sta *rs_sta;
+ struct il3945_sta_priv *psta = (void *) sta->drv_priv;
+ struct il_priv *il __maybe_unused = il_priv;
+
+ D_RATE("enter\n");
+
+ rs_sta = &psta->rs_sta;
+
+ spin_lock_init(&rs_sta->lock);
+ init_timer(&rs_sta->rate_scale_flush);
+
+ D_RATE("leave\n");
+
+ return rs_sta;
+}
+
+static void il3945_rs_free_sta(void *il_priv, struct ieee80211_sta *sta,
+ void *il_sta)
+{
+ struct il3945_rs_sta *rs_sta = il_sta;
+
+ /*
+ * Be careful not to use any members of il3945_rs_sta (like trying
+ * to use il_priv to print out debugging) since it may not be fully
+ * initialized at this point.
+ */
+ del_timer_sync(&rs_sta->rate_scale_flush);
+}
+
+
+/**
+ * il3945_rs_tx_status - Update rate control values based on Tx results
+ *
+ * NOTE: Uses il_priv->retry_rate for the # of retries attempted by
+ * the hardware for each rate.
+ */
+static void il3945_rs_tx_status(void *il_rate, struct ieee80211_supported_band *sband,
+ struct ieee80211_sta *sta, void *il_sta,
+ struct sk_buff *skb)
+{
+ s8 retries = 0, current_count;
+ int scale_rate_idx, first_idx, last_idx;
+ unsigned long flags;
+ struct il_priv *il = (struct il_priv *)il_rate;
+ struct il3945_rs_sta *rs_sta = il_sta;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+ D_RATE("enter\n");
+
+ retries = info->status.rates[0].count;
+ /* Sanity Check for retries */
+ if (retries > RATE_RETRY_TH)
+ retries = RATE_RETRY_TH;
+
+ first_idx = sband->bitrates[info->status.rates[0].idx].hw_value;
+ if (first_idx < 0 || first_idx >= RATE_COUNT_3945) {
+ D_RATE("leave: Rate out of bounds: %d\n", first_idx);
+ return;
+ }
+
+ if (!il_sta) {
+ D_RATE("leave: No STA il data to update!\n");
+ return;
+ }
+
+ /* Treat uninitialized rate scaling data same as non-existing. */
+ if (!rs_sta->il) {
+ D_RATE("leave: STA il data uninitialized!\n");
+ return;
+ }
+
+
+ rs_sta->tx_packets++;
+
+ scale_rate_idx = first_idx;
+ last_idx = first_idx;
+
+ /*
+ * Update the win for each rate. We determine which rates
+ * were Tx'd based on the total number of retries vs. the number
+ * of retries configured for each rate -- currently set to the
+ * il value 'retry_rate' vs. rate specific
+ *
+ * On exit from this while loop last_idx indicates the rate
+ * at which the frame was finally transmitted (or failed if no
+ * ACK)
+ */
+ while (retries > 1) {
+ if ((retries - 1) < il->retry_rate) {
+ current_count = (retries - 1);
+ last_idx = scale_rate_idx;
+ } else {
+ current_count = il->retry_rate;
+ last_idx = il3945_rs_next_rate(il,
+ scale_rate_idx);
+ }
+
+ /* Update this rate accounting for as many retries
+ * as was used for it (per current_count) */
+ il3945_collect_tx_data(rs_sta,
+ &rs_sta->win[scale_rate_idx],
+ 0, current_count, scale_rate_idx);
+ D_RATE("Update rate %d for %d retries.\n",
+ scale_rate_idx, current_count);
+
+ retries -= current_count;
+
+ scale_rate_idx = last_idx;
+ }
+
+
+ /* Update the last idx win with success/failure based on ACK */
+ D_RATE("Update rate %d with %s.\n",
+ last_idx,
+ (info->flags & IEEE80211_TX_STAT_ACK) ?
+ "success" : "failure");
+ il3945_collect_tx_data(rs_sta,
+ &rs_sta->win[last_idx],
+ info->flags & IEEE80211_TX_STAT_ACK, 1, last_idx);
+
+ /* We updated the rate scale win -- if its been more than
+ * flush_time since the last run, schedule the flush
+ * again */
+ spin_lock_irqsave(&rs_sta->lock, flags);
+
+ if (!rs_sta->flush_pending &&
+ time_after(jiffies, rs_sta->last_flush +
+ rs_sta->flush_time)) {
+
+ rs_sta->last_partial_flush = jiffies;
+ rs_sta->flush_pending = 1;
+ mod_timer(&rs_sta->rate_scale_flush,
+ jiffies + rs_sta->flush_time);
+ }
+
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
+
+ D_RATE("leave\n");
+}
+
+static u16 il3945_get_adjacent_rate(struct il3945_rs_sta *rs_sta,
+ u8 idx, u16 rate_mask, enum ieee80211_band band)
+{
+ u8 high = RATE_INVALID;
+ u8 low = RATE_INVALID;
+ struct il_priv *il __maybe_unused = rs_sta->il;
+
+ /* 802.11A walks to the next literal adjacent rate in
+ * the rate table */
+ if (unlikely(band == IEEE80211_BAND_5GHZ)) {
+ int i;
+ u32 mask;
+
+ /* Find the previous rate that is in the rate mask */
+ i = idx - 1;
+ for (mask = (1 << i); i >= 0; i--, mask >>= 1) {
+ if (rate_mask & mask) {
+ low = i;
+ break;
+ }
+ }
+
+ /* Find the next rate that is in the rate mask */
+ i = idx + 1;
+ for (mask = (1 << i); i < RATE_COUNT_3945;
+ i++, mask <<= 1) {
+ if (rate_mask & mask) {
+ high = i;
+ break;
+ }
+ }
+
+ return (high << 8) | low;
+ }
+
+ low = idx;
+ while (low != RATE_INVALID) {
+ if (rs_sta->tgg)
+ low = il3945_rates[low].prev_rs_tgg;
+ else
+ low = il3945_rates[low].prev_rs;
+ if (low == RATE_INVALID)
+ break;
+ if (rate_mask & (1 << low))
+ break;
+ D_RATE("Skipping masked lower rate: %d\n", low);
+ }
+
+ high = idx;
+ while (high != RATE_INVALID) {
+ if (rs_sta->tgg)
+ high = il3945_rates[high].next_rs_tgg;
+ else
+ high = il3945_rates[high].next_rs;
+ if (high == RATE_INVALID)
+ break;
+ if (rate_mask & (1 << high))
+ break;
+ D_RATE("Skipping masked higher rate: %d\n", high);
+ }
+
+ return (high << 8) | low;
+}
+
+/**
+ * il3945_rs_get_rate - find the rate for the requested packet
+ *
+ * Returns the ieee80211_rate structure allocated by the driver.
+ *
+ * The rate control algorithm has no internal mapping between hw_mode's
+ * rate ordering and the rate ordering used by the rate control algorithm.
+ *
+ * The rate control algorithm uses a single table of rates that goes across
+ * the entire A/B/G spectrum vs. being limited to just one particular
+ * hw_mode.
+ *
+ * As such, we can't convert the idx obtained below into the hw_mode's
+ * rate table and must reference the driver allocated rate table
+ *
+ */
+static void il3945_rs_get_rate(void *il_r, struct ieee80211_sta *sta,
+ void *il_sta, struct ieee80211_tx_rate_control *txrc)
+{
+ struct ieee80211_supported_band *sband = txrc->sband;
+ struct sk_buff *skb = txrc->skb;
+ u8 low = RATE_INVALID;
+ u8 high = RATE_INVALID;
+ u16 high_low;
+ int idx;
+ struct il3945_rs_sta *rs_sta = il_sta;
+ struct il3945_rate_scale_data *win = NULL;
+ int current_tpt = IL_INVALID_VALUE;
+ int low_tpt = IL_INVALID_VALUE;
+ int high_tpt = IL_INVALID_VALUE;
+ u32 fail_count;
+ s8 scale_action = 0;
+ unsigned long flags;
+ u16 rate_mask;
+ s8 max_rate_idx = -1;
+ struct il_priv *il __maybe_unused = (struct il_priv *)il_r;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+ D_RATE("enter\n");
+
+ /* Treat uninitialized rate scaling data same as non-existing. */
+ if (rs_sta && !rs_sta->il) {
+ D_RATE("Rate scaling information not initialized yet.\n");
+ il_sta = NULL;
+ }
+
+ if (rate_control_send_low(sta, il_sta, txrc))
+ return;
+
+ rate_mask = sta->supp_rates[sband->band];
+
+ /* get user max rate if set */
+ max_rate_idx = txrc->max_rate_idx;
+ if (sband->band == IEEE80211_BAND_5GHZ && max_rate_idx != -1)
+ max_rate_idx += IL_FIRST_OFDM_RATE;
+ if (max_rate_idx < 0 || max_rate_idx >= RATE_COUNT)
+ max_rate_idx = -1;
+
+ idx = min(rs_sta->last_txrate_idx & 0xffff, RATE_COUNT_3945 - 1);
+
+ if (sband->band == IEEE80211_BAND_5GHZ)
+ rate_mask = rate_mask << IL_FIRST_OFDM_RATE;
+
+ spin_lock_irqsave(&rs_sta->lock, flags);
+
+ /* for recent assoc, choose best rate regarding
+ * to rssi value
+ */
+ if (rs_sta->start_rate != RATE_INVALID) {
+ if (rs_sta->start_rate < idx &&
+ (rate_mask & (1 << rs_sta->start_rate)))
+ idx = rs_sta->start_rate;
+ rs_sta->start_rate = RATE_INVALID;
+ }
+
+ /* force user max rate if set by user */
+ if (max_rate_idx != -1 && max_rate_idx < idx) {
+ if (rate_mask & (1 << max_rate_idx))
+ idx = max_rate_idx;
+ }
+
+ win = &(rs_sta->win[idx]);
+
+ fail_count = win->counter - win->success_counter;
+
+ if (fail_count < RATE_MIN_FAILURE_TH &&
+ win->success_counter < RATE_MIN_SUCCESS_TH) {
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
+
+ D_RATE("Invalid average_tpt on rate %d: "
+ "counter: %d, success_counter: %d, "
+ "expected_tpt is %sNULL\n",
+ idx,
+ win->counter,
+ win->success_counter,
+ rs_sta->expected_tpt ? "not " : "");
+
+ /* Can't calculate this yet; not enough history */
+ win->average_tpt = IL_INVALID_VALUE;
+ goto out;
+
+ }
+
+ current_tpt = win->average_tpt;
+
+ high_low = il3945_get_adjacent_rate(rs_sta, idx, rate_mask,
+ sband->band);
+ low = high_low & 0xff;
+ high = (high_low >> 8) & 0xff;
+
+ /* If user set max rate, dont allow higher than user constrain */
+ if (max_rate_idx != -1 && max_rate_idx < high)
+ high = RATE_INVALID;
+
+ /* Collect Measured throughputs of adjacent rates */
+ if (low != RATE_INVALID)
+ low_tpt = rs_sta->win[low].average_tpt;
+
+ if (high != RATE_INVALID)
+ high_tpt = rs_sta->win[high].average_tpt;
+
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
+
+ scale_action = 0;
+
+ /* Low success ratio , need to drop the rate */
+ if (win->success_ratio < RATE_DECREASE_TH || !current_tpt) {
+ D_RATE("decrease rate because of low success_ratio\n");
+ scale_action = -1;
+ /* No throughput measured yet for adjacent rates,
+ * try increase */
+ } else if (low_tpt == IL_INVALID_VALUE &&
+ high_tpt == IL_INVALID_VALUE) {
+
+ if (high != RATE_INVALID && win->success_ratio >= RATE_INCREASE_TH)
+ scale_action = 1;
+ else if (low != RATE_INVALID)
+ scale_action = 0;
+
+ /* Both adjacent throughputs are measured, but neither one has
+ * better throughput; we're using the best rate, don't change
+ * it! */
+ } else if (low_tpt != IL_INVALID_VALUE &&
+ high_tpt != IL_INVALID_VALUE &&
+ low_tpt < current_tpt && high_tpt < current_tpt) {
+
+ D_RATE("No action -- low [%d] & high [%d] < "
+ "current_tpt [%d]\n",
+ low_tpt, high_tpt, current_tpt);
+ scale_action = 0;
+
+ /* At least one of the rates has better throughput */
+ } else {
+ if (high_tpt != IL_INVALID_VALUE) {
+
+ /* High rate has better throughput, Increase
+ * rate */
+ if (high_tpt > current_tpt &&
+ win->success_ratio >= RATE_INCREASE_TH)
+ scale_action = 1;
+ else {
+ D_RATE(
+ "decrease rate because of high tpt\n");
+ scale_action = 0;
+ }
+ } else if (low_tpt != IL_INVALID_VALUE) {
+ if (low_tpt > current_tpt) {
+ D_RATE(
+ "decrease rate because of low tpt\n");
+ scale_action = -1;
+ } else if (win->success_ratio >= RATE_INCREASE_TH) {
+ /* Lower rate has better
+ * throughput,decrease rate */
+ scale_action = 1;
+ }
+ }
+ }
+
+ /* Sanity check; asked for decrease, but success rate or throughput
+ * has been good at old rate. Don't change it. */
+ if (scale_action == -1 && low != RATE_INVALID &&
+ (win->success_ratio > RATE_HIGH_TH ||
+ current_tpt > 100 * rs_sta->expected_tpt[low]))
+ scale_action = 0;
+
+ switch (scale_action) {
+ case -1:
+
+ /* Decrese rate */
+ if (low != RATE_INVALID)
+ idx = low;
+ break;
+
+ case 1:
+ /* Increase rate */
+ if (high != RATE_INVALID)
+ idx = high;
+
+ break;
+
+ case 0:
+ default:
+ /* No change */
+ break;
+ }
+
+ D_RATE("Selected %d (action %d) - low %d high %d\n",
+ idx, scale_action, low, high);
+
+ out:
+
+ if (sband->band == IEEE80211_BAND_5GHZ) {
+ if (WARN_ON_ONCE(idx < IL_FIRST_OFDM_RATE))
+ idx = IL_FIRST_OFDM_RATE;
+ rs_sta->last_txrate_idx = idx;
+ info->control.rates[0].idx = idx - IL_FIRST_OFDM_RATE;
+ } else {
+ rs_sta->last_txrate_idx = idx;
+ info->control.rates[0].idx = rs_sta->last_txrate_idx;
+ }
+
+ D_RATE("leave: %d\n", idx);
+}
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+static int il3945_open_file_generic(struct inode *inode, struct file *file)
+{
+ file->private_data = inode->i_private;
+ return 0;
+}
+
+static ssize_t il3945_sta_dbgfs_stats_table_read(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ char *buff;
+ int desc = 0;
+ int j;
+ ssize_t ret;
+ struct il3945_rs_sta *lq_sta = file->private_data;
+
+ buff = kmalloc(1024, GFP_KERNEL);
+ if (!buff)
+ return -ENOMEM;
+
+ desc += sprintf(buff + desc, "tx packets=%d last rate idx=%d\n"
+ "rate=0x%X flush time %d\n",
+ lq_sta->tx_packets,
+ lq_sta->last_txrate_idx,
+ lq_sta->start_rate, jiffies_to_msecs(lq_sta->flush_time));
+ for (j = 0; j < RATE_COUNT_3945; j++) {
+ desc += sprintf(buff+desc,
+ "counter=%d success=%d %%=%d\n",
+ lq_sta->win[j].counter,
+ lq_sta->win[j].success_counter,
+ lq_sta->win[j].success_ratio);
+ }
+ ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc);
+ kfree(buff);
+ return ret;
+}
+
+static const struct file_operations rs_sta_dbgfs_stats_table_ops = {
+ .read = il3945_sta_dbgfs_stats_table_read,
+ .open = il3945_open_file_generic,
+ .llseek = default_llseek,
+};
+
+static void il3945_add_debugfs(void *il, void *il_sta,
+ struct dentry *dir)
+{
+ struct il3945_rs_sta *lq_sta = il_sta;
+
+ lq_sta->rs_sta_dbgfs_stats_table_file =
+ debugfs_create_file("rate_stats_table", 0600, dir,
+ lq_sta, &rs_sta_dbgfs_stats_table_ops);
+
+}
+
+static void il3945_remove_debugfs(void *il, void *il_sta)
+{
+ struct il3945_rs_sta *lq_sta = il_sta;
+ debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file);
+}
+#endif
+
+/*
+ * Initialization of rate scaling information is done by driver after
+ * the station is added. Since mac80211 calls this function before a
+ * station is added we ignore it.
+ */
+static void il3945_rs_rate_init_stub(void *il_r,
+ struct ieee80211_supported_band *sband,
+ struct ieee80211_sta *sta, void *il_sta)
+{
+}
+
+static struct rate_control_ops rs_ops = {
+ .module = NULL,
+ .name = RS_NAME,
+ .tx_status = il3945_rs_tx_status,
+ .get_rate = il3945_rs_get_rate,
+ .rate_init = il3945_rs_rate_init_stub,
+ .alloc = il3945_rs_alloc,
+ .free = il3945_rs_free,
+ .alloc_sta = il3945_rs_alloc_sta,
+ .free_sta = il3945_rs_free_sta,
+#ifdef CONFIG_MAC80211_DEBUGFS
+ .add_sta_debugfs = il3945_add_debugfs,
+ .remove_sta_debugfs = il3945_remove_debugfs,
+#endif
+
+};
+void il3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)
+{
+ struct il_priv *il = hw->priv;
+ s32 rssi = 0;
+ unsigned long flags;
+ struct il3945_rs_sta *rs_sta;
+ struct ieee80211_sta *sta;
+ struct il3945_sta_priv *psta;
+
+ D_RATE("enter\n");
+
+ rcu_read_lock();
+
+ sta = ieee80211_find_sta(il->ctx.vif,
+ il->stations[sta_id].sta.sta.addr);
+ if (!sta) {
+ D_RATE("Unable to find station to initialize rate scaling.\n");
+ rcu_read_unlock();
+ return;
+ }
+
+ psta = (void *) sta->drv_priv;
+ rs_sta = &psta->rs_sta;
+
+ spin_lock_irqsave(&rs_sta->lock, flags);
+
+ rs_sta->tgg = 0;
+ switch (il->band) {
+ case IEEE80211_BAND_2GHZ:
+ /* TODO: this always does G, not a regression */
+ if (il->ctx.active.flags &
+ RXON_FLG_TGG_PROTECT_MSK) {
+ rs_sta->tgg = 1;
+ rs_sta->expected_tpt = il3945_expected_tpt_g_prot;
+ } else
+ rs_sta->expected_tpt = il3945_expected_tpt_g;
+ break;
+
+ case IEEE80211_BAND_5GHZ:
+ rs_sta->expected_tpt = il3945_expected_tpt_a;
+ break;
+ case IEEE80211_NUM_BANDS:
+ BUG();
+ break;
+ }
+
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
+
+ rssi = il->_3945.last_rx_rssi;
+ if (rssi == 0)
+ rssi = IL_MIN_RSSI_VAL;
+
+ D_RATE("Network RSSI: %d\n", rssi);
+
+ rs_sta->start_rate = il3945_get_rate_idx_by_rssi(rssi, il->band);
+
+ D_RATE("leave: rssi %d assign rate idx: "
+ "%d (plcp 0x%x)\n", rssi, rs_sta->start_rate,
+ il3945_rates[rs_sta->start_rate].plcp);
+ rcu_read_unlock();
+}
+
+int il3945_rate_control_register(void)
+{
+ return ieee80211_rate_control_register(&rs_ops);
+}
+
+void il3945_rate_control_unregister(void)
+{
+ ieee80211_rate_control_unregister(&rs_ops);
+}
# 3945
obj-$(CONFIG_IWL3945) += iwl3945.o
-iwl3945-objs := 3945-mac.o 3945.o iwl-3945-rs.o
-iwl3945-$(CONFIG_IWLEGACY_DEBUGFS) += iwl-3945-debugfs.o
+iwl3945-objs := 3945-mac.o 3945.o 3945-rs.o
+iwl3945-$(CONFIG_IWLEGACY_DEBUGFS) += 3945-debug.o
ccflags-y += -D__CHECK_ENDIAN__
+++ /dev/null
-/******************************************************************************
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
- * USA
- *
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * Contact Information:
- * Intel Linux Wireless <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *****************************************************************************/
-
-#include "iwl-3945-debugfs.h"
-
-
-static int il3945_stats_flag(struct il_priv *il, char *buf, int bufsz)
-{
- int p = 0;
-
- p += scnprintf(buf + p, bufsz - p, "Statistics Flag(0x%X):\n",
- le32_to_cpu(il->_3945.stats.flag));
- if (le32_to_cpu(il->_3945.stats.flag) &
- UCODE_STATISTICS_CLEAR_MSK)
- p += scnprintf(buf + p, bufsz - p,
- "\tStatistics have been cleared\n");
- p += scnprintf(buf + p, bufsz - p, "\tOperational Frequency: %s\n",
- (le32_to_cpu(il->_3945.stats.flag) &
- UCODE_STATISTICS_FREQUENCY_MSK)
- ? "2.4 GHz" : "5.2 GHz");
- p += scnprintf(buf + p, bufsz - p, "\tTGj Narrow Band: %s\n",
- (le32_to_cpu(il->_3945.stats.flag) &
- UCODE_STATISTICS_NARROW_BAND_MSK)
- ? "enabled" : "disabled");
- return p;
-}
-
-ssize_t il3945_ucode_rx_stats_read(struct file *file,
- char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- struct il_priv *il = file->private_data;
- int pos = 0;
- char *buf;
- int bufsz = sizeof(struct iwl39_stats_rx_phy) * 40 +
- sizeof(struct iwl39_stats_rx_non_phy) * 40 + 400;
- ssize_t ret;
- struct iwl39_stats_rx_phy *ofdm, *accum_ofdm, *delta_ofdm,
- *max_ofdm;
- struct iwl39_stats_rx_phy *cck, *accum_cck, *delta_cck, *max_cck;
- struct iwl39_stats_rx_non_phy *general, *accum_general;
- struct iwl39_stats_rx_non_phy *delta_general, *max_general;
-
- if (!il_is_alive(il))
- return -EAGAIN;
-
- buf = kzalloc(bufsz, GFP_KERNEL);
- if (!buf) {
- IL_ERR("Can not allocate Buffer\n");
- return -ENOMEM;
- }
-
- /*
- * The statistic information display here is based on
- * the last stats notification from uCode
- * might not reflect the current uCode activity
- */
- ofdm = &il->_3945.stats.rx.ofdm;
- cck = &il->_3945.stats.rx.cck;
- general = &il->_3945.stats.rx.general;
- accum_ofdm = &il->_3945.accum_stats.rx.ofdm;
- accum_cck = &il->_3945.accum_stats.rx.cck;
- accum_general = &il->_3945.accum_stats.rx.general;
- delta_ofdm = &il->_3945.delta_stats.rx.ofdm;
- delta_cck = &il->_3945.delta_stats.rx.cck;
- delta_general = &il->_3945.delta_stats.rx.general;
- max_ofdm = &il->_3945.max_delta.rx.ofdm;
- max_cck = &il->_3945.max_delta.rx.cck;
- max_general = &il->_3945.max_delta.rx.general;
-
- pos += il3945_stats_flag(il, buf, bufsz);
- pos += scnprintf(buf + pos, bufsz - pos, "%-32s current"
- "acumulative delta max\n",
- "Statistics_Rx - OFDM:");
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "ina_cnt:", le32_to_cpu(ofdm->ina_cnt),
- accum_ofdm->ina_cnt,
- delta_ofdm->ina_cnt, max_ofdm->ina_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "fina_cnt:",
- le32_to_cpu(ofdm->fina_cnt), accum_ofdm->fina_cnt,
- delta_ofdm->fina_cnt, max_ofdm->fina_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n", "plcp_err:",
- le32_to_cpu(ofdm->plcp_err), accum_ofdm->plcp_err,
- delta_ofdm->plcp_err, max_ofdm->plcp_err);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n", "crc32_err:",
- le32_to_cpu(ofdm->crc32_err), accum_ofdm->crc32_err,
- delta_ofdm->crc32_err, max_ofdm->crc32_err);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n", "overrun_err:",
- le32_to_cpu(ofdm->overrun_err),
- accum_ofdm->overrun_err, delta_ofdm->overrun_err,
- max_ofdm->overrun_err);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "early_overrun_err:",
- le32_to_cpu(ofdm->early_overrun_err),
- accum_ofdm->early_overrun_err,
- delta_ofdm->early_overrun_err,
- max_ofdm->early_overrun_err);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "crc32_good:", le32_to_cpu(ofdm->crc32_good),
- accum_ofdm->crc32_good, delta_ofdm->crc32_good,
- max_ofdm->crc32_good);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n", "false_alarm_cnt:",
- le32_to_cpu(ofdm->false_alarm_cnt),
- accum_ofdm->false_alarm_cnt,
- delta_ofdm->false_alarm_cnt,
- max_ofdm->false_alarm_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "fina_sync_err_cnt:",
- le32_to_cpu(ofdm->fina_sync_err_cnt),
- accum_ofdm->fina_sync_err_cnt,
- delta_ofdm->fina_sync_err_cnt,
- max_ofdm->fina_sync_err_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "sfd_timeout:",
- le32_to_cpu(ofdm->sfd_timeout),
- accum_ofdm->sfd_timeout,
- delta_ofdm->sfd_timeout,
- max_ofdm->sfd_timeout);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "fina_timeout:",
- le32_to_cpu(ofdm->fina_timeout),
- accum_ofdm->fina_timeout,
- delta_ofdm->fina_timeout,
- max_ofdm->fina_timeout);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "unresponded_rts:",
- le32_to_cpu(ofdm->unresponded_rts),
- accum_ofdm->unresponded_rts,
- delta_ofdm->unresponded_rts,
- max_ofdm->unresponded_rts);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "rxe_frame_lmt_ovrun:",
- le32_to_cpu(ofdm->rxe_frame_limit_overrun),
- accum_ofdm->rxe_frame_limit_overrun,
- delta_ofdm->rxe_frame_limit_overrun,
- max_ofdm->rxe_frame_limit_overrun);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "sent_ack_cnt:",
- le32_to_cpu(ofdm->sent_ack_cnt),
- accum_ofdm->sent_ack_cnt,
- delta_ofdm->sent_ack_cnt,
- max_ofdm->sent_ack_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "sent_cts_cnt:",
- le32_to_cpu(ofdm->sent_cts_cnt),
- accum_ofdm->sent_cts_cnt,
- delta_ofdm->sent_cts_cnt, max_ofdm->sent_cts_cnt);
-
- pos += scnprintf(buf + pos, bufsz - pos, "%-32s current"
- "acumulative delta max\n",
- "Statistics_Rx - CCK:");
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "ina_cnt:",
- le32_to_cpu(cck->ina_cnt), accum_cck->ina_cnt,
- delta_cck->ina_cnt, max_cck->ina_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "fina_cnt:",
- le32_to_cpu(cck->fina_cnt), accum_cck->fina_cnt,
- delta_cck->fina_cnt, max_cck->fina_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "plcp_err:",
- le32_to_cpu(cck->plcp_err), accum_cck->plcp_err,
- delta_cck->plcp_err, max_cck->plcp_err);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "crc32_err:",
- le32_to_cpu(cck->crc32_err), accum_cck->crc32_err,
- delta_cck->crc32_err, max_cck->crc32_err);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "overrun_err:",
- le32_to_cpu(cck->overrun_err),
- accum_cck->overrun_err,
- delta_cck->overrun_err, max_cck->overrun_err);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "early_overrun_err:",
- le32_to_cpu(cck->early_overrun_err),
- accum_cck->early_overrun_err,
- delta_cck->early_overrun_err,
- max_cck->early_overrun_err);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "crc32_good:",
- le32_to_cpu(cck->crc32_good), accum_cck->crc32_good,
- delta_cck->crc32_good,
- max_cck->crc32_good);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "false_alarm_cnt:",
- le32_to_cpu(cck->false_alarm_cnt),
- accum_cck->false_alarm_cnt,
- delta_cck->false_alarm_cnt, max_cck->false_alarm_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "fina_sync_err_cnt:",
- le32_to_cpu(cck->fina_sync_err_cnt),
- accum_cck->fina_sync_err_cnt,
- delta_cck->fina_sync_err_cnt,
- max_cck->fina_sync_err_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "sfd_timeout:",
- le32_to_cpu(cck->sfd_timeout),
- accum_cck->sfd_timeout,
- delta_cck->sfd_timeout, max_cck->sfd_timeout);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "fina_timeout:",
- le32_to_cpu(cck->fina_timeout),
- accum_cck->fina_timeout,
- delta_cck->fina_timeout, max_cck->fina_timeout);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "unresponded_rts:",
- le32_to_cpu(cck->unresponded_rts),
- accum_cck->unresponded_rts,
- delta_cck->unresponded_rts,
- max_cck->unresponded_rts);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "rxe_frame_lmt_ovrun:",
- le32_to_cpu(cck->rxe_frame_limit_overrun),
- accum_cck->rxe_frame_limit_overrun,
- delta_cck->rxe_frame_limit_overrun,
- max_cck->rxe_frame_limit_overrun);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "sent_ack_cnt:",
- le32_to_cpu(cck->sent_ack_cnt),
- accum_cck->sent_ack_cnt,
- delta_cck->sent_ack_cnt,
- max_cck->sent_ack_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "sent_cts_cnt:",
- le32_to_cpu(cck->sent_cts_cnt),
- accum_cck->sent_cts_cnt,
- delta_cck->sent_cts_cnt,
- max_cck->sent_cts_cnt);
-
- pos += scnprintf(buf + pos, bufsz - pos, "%-32s current"
- "acumulative delta max\n",
- "Statistics_Rx - GENERAL:");
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "bogus_cts:",
- le32_to_cpu(general->bogus_cts),
- accum_general->bogus_cts,
- delta_general->bogus_cts, max_general->bogus_cts);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "bogus_ack:",
- le32_to_cpu(general->bogus_ack),
- accum_general->bogus_ack,
- delta_general->bogus_ack, max_general->bogus_ack);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "non_bssid_frames:",
- le32_to_cpu(general->non_bssid_frames),
- accum_general->non_bssid_frames,
- delta_general->non_bssid_frames,
- max_general->non_bssid_frames);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "filtered_frames:",
- le32_to_cpu(general->filtered_frames),
- accum_general->filtered_frames,
- delta_general->filtered_frames,
- max_general->filtered_frames);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "non_channel_beacons:",
- le32_to_cpu(general->non_channel_beacons),
- accum_general->non_channel_beacons,
- delta_general->non_channel_beacons,
- max_general->non_channel_beacons);
-
- ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
- kfree(buf);
- return ret;
-}
-
-ssize_t il3945_ucode_tx_stats_read(struct file *file,
- char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- struct il_priv *il = file->private_data;
- int pos = 0;
- char *buf;
- int bufsz = (sizeof(struct iwl39_stats_tx) * 48) + 250;
- ssize_t ret;
- struct iwl39_stats_tx *tx, *accum_tx, *delta_tx, *max_tx;
-
- if (!il_is_alive(il))
- return -EAGAIN;
-
- buf = kzalloc(bufsz, GFP_KERNEL);
- if (!buf) {
- IL_ERR("Can not allocate Buffer\n");
- return -ENOMEM;
- }
-
- /*
- * The statistic information display here is based on
- * the last stats notification from uCode
- * might not reflect the current uCode activity
- */
- tx = &il->_3945.stats.tx;
- accum_tx = &il->_3945.accum_stats.tx;
- delta_tx = &il->_3945.delta_stats.tx;
- max_tx = &il->_3945.max_delta.tx;
- pos += il3945_stats_flag(il, buf, bufsz);
- pos += scnprintf(buf + pos, bufsz - pos, "%-32s current"
- "acumulative delta max\n",
- "Statistics_Tx:");
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "preamble:",
- le32_to_cpu(tx->preamble_cnt),
- accum_tx->preamble_cnt,
- delta_tx->preamble_cnt, max_tx->preamble_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "rx_detected_cnt:",
- le32_to_cpu(tx->rx_detected_cnt),
- accum_tx->rx_detected_cnt,
- delta_tx->rx_detected_cnt, max_tx->rx_detected_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "bt_prio_defer_cnt:",
- le32_to_cpu(tx->bt_prio_defer_cnt),
- accum_tx->bt_prio_defer_cnt,
- delta_tx->bt_prio_defer_cnt,
- max_tx->bt_prio_defer_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "bt_prio_kill_cnt:",
- le32_to_cpu(tx->bt_prio_kill_cnt),
- accum_tx->bt_prio_kill_cnt,
- delta_tx->bt_prio_kill_cnt,
- max_tx->bt_prio_kill_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "few_bytes_cnt:",
- le32_to_cpu(tx->few_bytes_cnt),
- accum_tx->few_bytes_cnt,
- delta_tx->few_bytes_cnt, max_tx->few_bytes_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "cts_timeout:",
- le32_to_cpu(tx->cts_timeout), accum_tx->cts_timeout,
- delta_tx->cts_timeout, max_tx->cts_timeout);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "ack_timeout:",
- le32_to_cpu(tx->ack_timeout),
- accum_tx->ack_timeout,
- delta_tx->ack_timeout, max_tx->ack_timeout);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "expected_ack_cnt:",
- le32_to_cpu(tx->expected_ack_cnt),
- accum_tx->expected_ack_cnt,
- delta_tx->expected_ack_cnt,
- max_tx->expected_ack_cnt);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "actual_ack_cnt:",
- le32_to_cpu(tx->actual_ack_cnt),
- accum_tx->actual_ack_cnt,
- delta_tx->actual_ack_cnt,
- max_tx->actual_ack_cnt);
-
- ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
- kfree(buf);
- return ret;
-}
-
-ssize_t il3945_ucode_general_stats_read(struct file *file,
- char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- struct il_priv *il = file->private_data;
- int pos = 0;
- char *buf;
- int bufsz = sizeof(struct iwl39_stats_general) * 10 + 300;
- ssize_t ret;
- struct iwl39_stats_general *general, *accum_general;
- struct iwl39_stats_general *delta_general, *max_general;
- struct stats_dbg *dbg, *accum_dbg, *delta_dbg, *max_dbg;
- struct iwl39_stats_div *div, *accum_div, *delta_div, *max_div;
-
- if (!il_is_alive(il))
- return -EAGAIN;
-
- buf = kzalloc(bufsz, GFP_KERNEL);
- if (!buf) {
- IL_ERR("Can not allocate Buffer\n");
- return -ENOMEM;
- }
-
- /*
- * The statistic information display here is based on
- * the last stats notification from uCode
- * might not reflect the current uCode activity
- */
- general = &il->_3945.stats.general;
- dbg = &il->_3945.stats.general.dbg;
- div = &il->_3945.stats.general.div;
- accum_general = &il->_3945.accum_stats.general;
- delta_general = &il->_3945.delta_stats.general;
- max_general = &il->_3945.max_delta.general;
- accum_dbg = &il->_3945.accum_stats.general.dbg;
- delta_dbg = &il->_3945.delta_stats.general.dbg;
- max_dbg = &il->_3945.max_delta.general.dbg;
- accum_div = &il->_3945.accum_stats.general.div;
- delta_div = &il->_3945.delta_stats.general.div;
- max_div = &il->_3945.max_delta.general.div;
- pos += il3945_stats_flag(il, buf, bufsz);
- pos += scnprintf(buf + pos, bufsz - pos, "%-32s current"
- "acumulative delta max\n",
- "Statistics_General:");
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "burst_check:",
- le32_to_cpu(dbg->burst_check),
- accum_dbg->burst_check,
- delta_dbg->burst_check, max_dbg->burst_check);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "burst_count:",
- le32_to_cpu(dbg->burst_count),
- accum_dbg->burst_count,
- delta_dbg->burst_count, max_dbg->burst_count);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "sleep_time:",
- le32_to_cpu(general->sleep_time),
- accum_general->sleep_time,
- delta_general->sleep_time, max_general->sleep_time);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "slots_out:",
- le32_to_cpu(general->slots_out),
- accum_general->slots_out,
- delta_general->slots_out, max_general->slots_out);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "slots_idle:",
- le32_to_cpu(general->slots_idle),
- accum_general->slots_idle,
- delta_general->slots_idle, max_general->slots_idle);
- pos += scnprintf(buf + pos, bufsz - pos, "ttl_timestamp:\t\t\t%u\n",
- le32_to_cpu(general->ttl_timestamp));
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "tx_on_a:",
- le32_to_cpu(div->tx_on_a), accum_div->tx_on_a,
- delta_div->tx_on_a, max_div->tx_on_a);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "tx_on_b:",
- le32_to_cpu(div->tx_on_b), accum_div->tx_on_b,
- delta_div->tx_on_b, max_div->tx_on_b);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "exec_time:",
- le32_to_cpu(div->exec_time), accum_div->exec_time,
- delta_div->exec_time, max_div->exec_time);
- pos += scnprintf(buf + pos, bufsz - pos,
- " %-30s %10u %10u %10u %10u\n",
- "probe_time:",
- le32_to_cpu(div->probe_time), accum_div->probe_time,
- delta_div->probe_time, max_div->probe_time);
- ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
- kfree(buf);
- return ret;
-}
+++ /dev/null
-/******************************************************************************
- *
- * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
- *
- * The full GNU General Public License is included in this distribution in the
- * file called LICENSE.
- *
- * Contact Information:
- * Intel Linux Wireless <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- *****************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/skbuff.h>
-#include <linux/slab.h>
-#include <net/mac80211.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/delay.h>
-
-#include <linux/workqueue.h>
-
-#include "iwl-commands.h"
-#include "iwl-3945.h"
-#include "iwl-sta.h"
-
-#define RS_NAME "iwl-3945-rs"
-
-static s32 il3945_expected_tpt_g[RATE_COUNT_3945] = {
- 7, 13, 35, 58, 0, 0, 76, 104, 130, 168, 191, 202
-};
-
-static s32 il3945_expected_tpt_g_prot[RATE_COUNT_3945] = {
- 7, 13, 35, 58, 0, 0, 0, 80, 93, 113, 123, 125
-};
-
-static s32 il3945_expected_tpt_a[RATE_COUNT_3945] = {
- 0, 0, 0, 0, 40, 57, 72, 98, 121, 154, 177, 186
-};
-
-static s32 il3945_expected_tpt_b[RATE_COUNT_3945] = {
- 7, 13, 35, 58, 0, 0, 0, 0, 0, 0, 0, 0
-};
-
-struct il3945_tpt_entry {
- s8 min_rssi;
- u8 idx;
-};
-
-static struct il3945_tpt_entry il3945_tpt_table_a[] = {
- {-60, RATE_54M_IDX},
- {-64, RATE_48M_IDX},
- {-72, RATE_36M_IDX},
- {-80, RATE_24M_IDX},
- {-84, RATE_18M_IDX},
- {-85, RATE_12M_IDX},
- {-87, RATE_9M_IDX},
- {-89, RATE_6M_IDX}
-};
-
-static struct il3945_tpt_entry il3945_tpt_table_g[] = {
- {-60, RATE_54M_IDX},
- {-64, RATE_48M_IDX},
- {-68, RATE_36M_IDX},
- {-80, RATE_24M_IDX},
- {-84, RATE_18M_IDX},
- {-85, RATE_12M_IDX},
- {-86, RATE_11M_IDX},
- {-88, RATE_5M_IDX},
- {-90, RATE_2M_IDX},
- {-92, RATE_1M_IDX}
-};
-
-#define RATE_MAX_WINDOW 62
-#define RATE_FLUSH (3*HZ)
-#define RATE_WIN_FLUSH (HZ/2)
-#define IL39_RATE_HIGH_TH 11520
-#define IL_SUCCESS_UP_TH 8960
-#define IL_SUCCESS_DOWN_TH 10880
-#define RATE_MIN_FAILURE_TH 6
-#define RATE_MIN_SUCCESS_TH 8
-#define RATE_DECREASE_TH 1920
-#define RATE_RETRY_TH 15
-
-static u8 il3945_get_rate_idx_by_rssi(s32 rssi, enum ieee80211_band band)
-{
- u32 idx = 0;
- u32 table_size = 0;
- struct il3945_tpt_entry *tpt_table = NULL;
-
- if (rssi < IL_MIN_RSSI_VAL || rssi > IL_MAX_RSSI_VAL)
- rssi = IL_MIN_RSSI_VAL;
-
- switch (band) {
- case IEEE80211_BAND_2GHZ:
- tpt_table = il3945_tpt_table_g;
- table_size = ARRAY_SIZE(il3945_tpt_table_g);
- break;
-
- case IEEE80211_BAND_5GHZ:
- tpt_table = il3945_tpt_table_a;
- table_size = ARRAY_SIZE(il3945_tpt_table_a);
- break;
-
- default:
- BUG();
- break;
- }
-
- while (idx < table_size && rssi < tpt_table[idx].min_rssi)
- idx++;
-
- idx = min(idx, (table_size - 1));
-
- return tpt_table[idx].idx;
-}
-
-static void il3945_clear_win(struct il3945_rate_scale_data *win)
-{
- win->data = 0;
- win->success_counter = 0;
- win->success_ratio = -1;
- win->counter = 0;
- win->average_tpt = IL_INVALID_VALUE;
- win->stamp = 0;
-}
-
-/**
- * il3945_rate_scale_flush_wins - flush out the rate scale wins
- *
- * Returns the number of wins that have gathered data but were
- * not flushed. If there were any that were not flushed, then
- * reschedule the rate flushing routine.
- */
-static int il3945_rate_scale_flush_wins(struct il3945_rs_sta *rs_sta)
-{
- int unflushed = 0;
- int i;
- unsigned long flags;
- struct il_priv *il __maybe_unused = rs_sta->il;
-
- /*
- * For each rate, if we have collected data on that rate
- * and it has been more than RATE_WIN_FLUSH
- * since we flushed, clear out the gathered stats
- */
- for (i = 0; i < RATE_COUNT_3945; i++) {
- if (!rs_sta->win[i].counter)
- continue;
-
- spin_lock_irqsave(&rs_sta->lock, flags);
- if (time_after(jiffies, rs_sta->win[i].stamp +
- RATE_WIN_FLUSH)) {
- D_RATE("flushing %d samples of rate "
- "idx %d\n",
- rs_sta->win[i].counter, i);
- il3945_clear_win(&rs_sta->win[i]);
- } else
- unflushed++;
- spin_unlock_irqrestore(&rs_sta->lock, flags);
- }
-
- return unflushed;
-}
-
-#define RATE_FLUSH_MAX 5000 /* msec */
-#define RATE_FLUSH_MIN 50 /* msec */
-#define IL_AVERAGE_PACKETS 1500
-
-static void il3945_bg_rate_scale_flush(unsigned long data)
-{
- struct il3945_rs_sta *rs_sta = (void *)data;
- struct il_priv *il __maybe_unused = rs_sta->il;
- int unflushed = 0;
- unsigned long flags;
- u32 packet_count, duration, pps;
-
- D_RATE("enter\n");
-
- unflushed = il3945_rate_scale_flush_wins(rs_sta);
-
- spin_lock_irqsave(&rs_sta->lock, flags);
-
- /* Number of packets Rx'd since last time this timer ran */
- packet_count = (rs_sta->tx_packets - rs_sta->last_tx_packets) + 1;
-
- rs_sta->last_tx_packets = rs_sta->tx_packets + 1;
-
- if (unflushed) {
- duration =
- jiffies_to_msecs(jiffies - rs_sta->last_partial_flush);
-
- D_RATE("Tx'd %d packets in %dms\n",
- packet_count, duration);
-
- /* Determine packets per second */
- if (duration)
- pps = (packet_count * 1000) / duration;
- else
- pps = 0;
-
- if (pps) {
- duration = (IL_AVERAGE_PACKETS * 1000) / pps;
- if (duration < RATE_FLUSH_MIN)
- duration = RATE_FLUSH_MIN;
- else if (duration > RATE_FLUSH_MAX)
- duration = RATE_FLUSH_MAX;
- } else
- duration = RATE_FLUSH_MAX;
-
- rs_sta->flush_time = msecs_to_jiffies(duration);
-
- D_RATE("new flush period: %d msec ave %d\n",
- duration, packet_count);
-
- mod_timer(&rs_sta->rate_scale_flush, jiffies +
- rs_sta->flush_time);
-
- rs_sta->last_partial_flush = jiffies;
- } else {
- rs_sta->flush_time = RATE_FLUSH;
- rs_sta->flush_pending = 0;
- }
- /* If there weren't any unflushed entries, we don't schedule the timer
- * to run again */
-
- rs_sta->last_flush = jiffies;
-
- spin_unlock_irqrestore(&rs_sta->lock, flags);
-
- D_RATE("leave\n");
-}
-
-/**
- * il3945_collect_tx_data - Update the success/failure sliding win
- *
- * We keep a sliding win of the last 64 packets transmitted
- * at this rate. win->data contains the bitmask of successful
- * packets.
- */
-static void il3945_collect_tx_data(struct il3945_rs_sta *rs_sta,
- struct il3945_rate_scale_data *win,
- int success, int retries, int idx)
-{
- unsigned long flags;
- s32 fail_count;
- struct il_priv *il __maybe_unused = rs_sta->il;
-
- if (!retries) {
- D_RATE("leave: retries == 0 -- should be at least 1\n");
- return;
- }
-
- spin_lock_irqsave(&rs_sta->lock, flags);
-
- /*
- * Keep track of only the latest 62 tx frame attempts in this rate's
- * history win; anything older isn't really relevant any more.
- * If we have filled up the sliding win, drop the oldest attempt;
- * if the oldest attempt (highest bit in bitmap) shows "success",
- * subtract "1" from the success counter (this is the main reason
- * we keep these bitmaps!).
- * */
- while (retries > 0) {
- if (win->counter >= RATE_MAX_WINDOW) {
-
- /* remove earliest */
- win->counter = RATE_MAX_WINDOW - 1;
-
- if (win->data & (1ULL << (RATE_MAX_WINDOW - 1))) {
- win->data &= ~(1ULL << (RATE_MAX_WINDOW - 1));
- win->success_counter--;
- }
- }
-
- /* Increment frames-attempted counter */
- win->counter++;
-
- /* Shift bitmap by one frame (throw away oldest history),
- * OR in "1", and increment "success" if this
- * frame was successful. */
- win->data <<= 1;
- if (success > 0) {
- win->success_counter++;
- win->data |= 0x1;
- success--;
- }
-
- retries--;
- }
-
- /* Calculate current success ratio, avoid divide-by-0! */
- if (win->counter > 0)
- win->success_ratio = 128 * (100 * win->success_counter)
- / win->counter;
- else
- win->success_ratio = IL_INVALID_VALUE;
-
- fail_count = win->counter - win->success_counter;
-
- /* Calculate average throughput, if we have enough history. */
- if (fail_count >= RATE_MIN_FAILURE_TH ||
- win->success_counter >= RATE_MIN_SUCCESS_TH)
- win->average_tpt = ((win->success_ratio *
- rs_sta->expected_tpt[idx] + 64) / 128);
- else
- win->average_tpt = IL_INVALID_VALUE;
-
- /* Tag this win as having been updated */
- win->stamp = jiffies;
-
- spin_unlock_irqrestore(&rs_sta->lock, flags);
-
-}
-
-/*
- * Called after adding a new station to initialize rate scaling
- */
-void il3945_rs_rate_init(struct il_priv *il, struct ieee80211_sta *sta, u8 sta_id)
-{
- struct ieee80211_hw *hw = il->hw;
- struct ieee80211_conf *conf = &il->hw->conf;
- struct il3945_sta_priv *psta;
- struct il3945_rs_sta *rs_sta;
- struct ieee80211_supported_band *sband;
- int i;
-
- D_INFO("enter\n");
- if (sta_id == il->ctx.bcast_sta_id)
- goto out;
-
- psta = (struct il3945_sta_priv *) sta->drv_priv;
- rs_sta = &psta->rs_sta;
- sband = hw->wiphy->bands[conf->channel->band];
-
- rs_sta->il = il;
-
- rs_sta->start_rate = RATE_INVALID;
-
- /* default to just 802.11b */
- rs_sta->expected_tpt = il3945_expected_tpt_b;
-
- rs_sta->last_partial_flush = jiffies;
- rs_sta->last_flush = jiffies;
- rs_sta->flush_time = RATE_FLUSH;
- rs_sta->last_tx_packets = 0;
-
- rs_sta->rate_scale_flush.data = (unsigned long)rs_sta;
- rs_sta->rate_scale_flush.function = il3945_bg_rate_scale_flush;
-
- for (i = 0; i < RATE_COUNT_3945; i++)
- il3945_clear_win(&rs_sta->win[i]);
-
- /* TODO: what is a good starting rate for STA? About middle? Maybe not
- * the lowest or the highest rate.. Could consider using RSSI from
- * previous packets? Need to have IEEE 802.1X auth succeed immediately
- * after assoc.. */
-
- for (i = sband->n_bitrates - 1; i >= 0; i--) {
- if (sta->supp_rates[sband->band] & (1 << i)) {
- rs_sta->last_txrate_idx = i;
- break;
- }
- }
-
- il->_3945.sta_supp_rates = sta->supp_rates[sband->band];
- /* For 5 GHz band it start at IL_FIRST_OFDM_RATE */
- if (sband->band == IEEE80211_BAND_5GHZ) {
- rs_sta->last_txrate_idx += IL_FIRST_OFDM_RATE;
- il->_3945.sta_supp_rates = il->_3945.sta_supp_rates <<
- IL_FIRST_OFDM_RATE;
- }
-
-out:
- il->stations[sta_id].used &= ~IL_STA_UCODE_INPROGRESS;
-
- D_INFO("leave\n");
-}
-
-static void *il3945_rs_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
-{
- return hw->priv;
-}
-
-/* rate scale requires free function to be implemented */
-static void il3945_rs_free(void *il)
-{
- return;
-}
-
-static void *il3945_rs_alloc_sta(void *il_priv, struct ieee80211_sta *sta, gfp_t gfp)
-{
- struct il3945_rs_sta *rs_sta;
- struct il3945_sta_priv *psta = (void *) sta->drv_priv;
- struct il_priv *il __maybe_unused = il_priv;
-
- D_RATE("enter\n");
-
- rs_sta = &psta->rs_sta;
-
- spin_lock_init(&rs_sta->lock);
- init_timer(&rs_sta->rate_scale_flush);
-
- D_RATE("leave\n");
-
- return rs_sta;
-}
-
-static void il3945_rs_free_sta(void *il_priv, struct ieee80211_sta *sta,
- void *il_sta)
-{
- struct il3945_rs_sta *rs_sta = il_sta;
-
- /*
- * Be careful not to use any members of il3945_rs_sta (like trying
- * to use il_priv to print out debugging) since it may not be fully
- * initialized at this point.
- */
- del_timer_sync(&rs_sta->rate_scale_flush);
-}
-
-
-/**
- * il3945_rs_tx_status - Update rate control values based on Tx results
- *
- * NOTE: Uses il_priv->retry_rate for the # of retries attempted by
- * the hardware for each rate.
- */
-static void il3945_rs_tx_status(void *il_rate, struct ieee80211_supported_band *sband,
- struct ieee80211_sta *sta, void *il_sta,
- struct sk_buff *skb)
-{
- s8 retries = 0, current_count;
- int scale_rate_idx, first_idx, last_idx;
- unsigned long flags;
- struct il_priv *il = (struct il_priv *)il_rate;
- struct il3945_rs_sta *rs_sta = il_sta;
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-
- D_RATE("enter\n");
-
- retries = info->status.rates[0].count;
- /* Sanity Check for retries */
- if (retries > RATE_RETRY_TH)
- retries = RATE_RETRY_TH;
-
- first_idx = sband->bitrates[info->status.rates[0].idx].hw_value;
- if (first_idx < 0 || first_idx >= RATE_COUNT_3945) {
- D_RATE("leave: Rate out of bounds: %d\n", first_idx);
- return;
- }
-
- if (!il_sta) {
- D_RATE("leave: No STA il data to update!\n");
- return;
- }
-
- /* Treat uninitialized rate scaling data same as non-existing. */
- if (!rs_sta->il) {
- D_RATE("leave: STA il data uninitialized!\n");
- return;
- }
-
-
- rs_sta->tx_packets++;
-
- scale_rate_idx = first_idx;
- last_idx = first_idx;
-
- /*
- * Update the win for each rate. We determine which rates
- * were Tx'd based on the total number of retries vs. the number
- * of retries configured for each rate -- currently set to the
- * il value 'retry_rate' vs. rate specific
- *
- * On exit from this while loop last_idx indicates the rate
- * at which the frame was finally transmitted (or failed if no
- * ACK)
- */
- while (retries > 1) {
- if ((retries - 1) < il->retry_rate) {
- current_count = (retries - 1);
- last_idx = scale_rate_idx;
- } else {
- current_count = il->retry_rate;
- last_idx = il3945_rs_next_rate(il,
- scale_rate_idx);
- }
-
- /* Update this rate accounting for as many retries
- * as was used for it (per current_count) */
- il3945_collect_tx_data(rs_sta,
- &rs_sta->win[scale_rate_idx],
- 0, current_count, scale_rate_idx);
- D_RATE("Update rate %d for %d retries.\n",
- scale_rate_idx, current_count);
-
- retries -= current_count;
-
- scale_rate_idx = last_idx;
- }
-
-
- /* Update the last idx win with success/failure based on ACK */
- D_RATE("Update rate %d with %s.\n",
- last_idx,
- (info->flags & IEEE80211_TX_STAT_ACK) ?
- "success" : "failure");
- il3945_collect_tx_data(rs_sta,
- &rs_sta->win[last_idx],
- info->flags & IEEE80211_TX_STAT_ACK, 1, last_idx);
-
- /* We updated the rate scale win -- if its been more than
- * flush_time since the last run, schedule the flush
- * again */
- spin_lock_irqsave(&rs_sta->lock, flags);
-
- if (!rs_sta->flush_pending &&
- time_after(jiffies, rs_sta->last_flush +
- rs_sta->flush_time)) {
-
- rs_sta->last_partial_flush = jiffies;
- rs_sta->flush_pending = 1;
- mod_timer(&rs_sta->rate_scale_flush,
- jiffies + rs_sta->flush_time);
- }
-
- spin_unlock_irqrestore(&rs_sta->lock, flags);
-
- D_RATE("leave\n");
-}
-
-static u16 il3945_get_adjacent_rate(struct il3945_rs_sta *rs_sta,
- u8 idx, u16 rate_mask, enum ieee80211_band band)
-{
- u8 high = RATE_INVALID;
- u8 low = RATE_INVALID;
- struct il_priv *il __maybe_unused = rs_sta->il;
-
- /* 802.11A walks to the next literal adjacent rate in
- * the rate table */
- if (unlikely(band == IEEE80211_BAND_5GHZ)) {
- int i;
- u32 mask;
-
- /* Find the previous rate that is in the rate mask */
- i = idx - 1;
- for (mask = (1 << i); i >= 0; i--, mask >>= 1) {
- if (rate_mask & mask) {
- low = i;
- break;
- }
- }
-
- /* Find the next rate that is in the rate mask */
- i = idx + 1;
- for (mask = (1 << i); i < RATE_COUNT_3945;
- i++, mask <<= 1) {
- if (rate_mask & mask) {
- high = i;
- break;
- }
- }
-
- return (high << 8) | low;
- }
-
- low = idx;
- while (low != RATE_INVALID) {
- if (rs_sta->tgg)
- low = il3945_rates[low].prev_rs_tgg;
- else
- low = il3945_rates[low].prev_rs;
- if (low == RATE_INVALID)
- break;
- if (rate_mask & (1 << low))
- break;
- D_RATE("Skipping masked lower rate: %d\n", low);
- }
-
- high = idx;
- while (high != RATE_INVALID) {
- if (rs_sta->tgg)
- high = il3945_rates[high].next_rs_tgg;
- else
- high = il3945_rates[high].next_rs;
- if (high == RATE_INVALID)
- break;
- if (rate_mask & (1 << high))
- break;
- D_RATE("Skipping masked higher rate: %d\n", high);
- }
-
- return (high << 8) | low;
-}
-
-/**
- * il3945_rs_get_rate - find the rate for the requested packet
- *
- * Returns the ieee80211_rate structure allocated by the driver.
- *
- * The rate control algorithm has no internal mapping between hw_mode's
- * rate ordering and the rate ordering used by the rate control algorithm.
- *
- * The rate control algorithm uses a single table of rates that goes across
- * the entire A/B/G spectrum vs. being limited to just one particular
- * hw_mode.
- *
- * As such, we can't convert the idx obtained below into the hw_mode's
- * rate table and must reference the driver allocated rate table
- *
- */
-static void il3945_rs_get_rate(void *il_r, struct ieee80211_sta *sta,
- void *il_sta, struct ieee80211_tx_rate_control *txrc)
-{
- struct ieee80211_supported_band *sband = txrc->sband;
- struct sk_buff *skb = txrc->skb;
- u8 low = RATE_INVALID;
- u8 high = RATE_INVALID;
- u16 high_low;
- int idx;
- struct il3945_rs_sta *rs_sta = il_sta;
- struct il3945_rate_scale_data *win = NULL;
- int current_tpt = IL_INVALID_VALUE;
- int low_tpt = IL_INVALID_VALUE;
- int high_tpt = IL_INVALID_VALUE;
- u32 fail_count;
- s8 scale_action = 0;
- unsigned long flags;
- u16 rate_mask;
- s8 max_rate_idx = -1;
- struct il_priv *il __maybe_unused = (struct il_priv *)il_r;
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-
- D_RATE("enter\n");
-
- /* Treat uninitialized rate scaling data same as non-existing. */
- if (rs_sta && !rs_sta->il) {
- D_RATE("Rate scaling information not initialized yet.\n");
- il_sta = NULL;
- }
-
- if (rate_control_send_low(sta, il_sta, txrc))
- return;
-
- rate_mask = sta->supp_rates[sband->band];
-
- /* get user max rate if set */
- max_rate_idx = txrc->max_rate_idx;
- if (sband->band == IEEE80211_BAND_5GHZ && max_rate_idx != -1)
- max_rate_idx += IL_FIRST_OFDM_RATE;
- if (max_rate_idx < 0 || max_rate_idx >= RATE_COUNT)
- max_rate_idx = -1;
-
- idx = min(rs_sta->last_txrate_idx & 0xffff, RATE_COUNT_3945 - 1);
-
- if (sband->band == IEEE80211_BAND_5GHZ)
- rate_mask = rate_mask << IL_FIRST_OFDM_RATE;
-
- spin_lock_irqsave(&rs_sta->lock, flags);
-
- /* for recent assoc, choose best rate regarding
- * to rssi value
- */
- if (rs_sta->start_rate != RATE_INVALID) {
- if (rs_sta->start_rate < idx &&
- (rate_mask & (1 << rs_sta->start_rate)))
- idx = rs_sta->start_rate;
- rs_sta->start_rate = RATE_INVALID;
- }
-
- /* force user max rate if set by user */
- if (max_rate_idx != -1 && max_rate_idx < idx) {
- if (rate_mask & (1 << max_rate_idx))
- idx = max_rate_idx;
- }
-
- win = &(rs_sta->win[idx]);
-
- fail_count = win->counter - win->success_counter;
-
- if (fail_count < RATE_MIN_FAILURE_TH &&
- win->success_counter < RATE_MIN_SUCCESS_TH) {
- spin_unlock_irqrestore(&rs_sta->lock, flags);
-
- D_RATE("Invalid average_tpt on rate %d: "
- "counter: %d, success_counter: %d, "
- "expected_tpt is %sNULL\n",
- idx,
- win->counter,
- win->success_counter,
- rs_sta->expected_tpt ? "not " : "");
-
- /* Can't calculate this yet; not enough history */
- win->average_tpt = IL_INVALID_VALUE;
- goto out;
-
- }
-
- current_tpt = win->average_tpt;
-
- high_low = il3945_get_adjacent_rate(rs_sta, idx, rate_mask,
- sband->band);
- low = high_low & 0xff;
- high = (high_low >> 8) & 0xff;
-
- /* If user set max rate, dont allow higher than user constrain */
- if (max_rate_idx != -1 && max_rate_idx < high)
- high = RATE_INVALID;
-
- /* Collect Measured throughputs of adjacent rates */
- if (low != RATE_INVALID)
- low_tpt = rs_sta->win[low].average_tpt;
-
- if (high != RATE_INVALID)
- high_tpt = rs_sta->win[high].average_tpt;
-
- spin_unlock_irqrestore(&rs_sta->lock, flags);
-
- scale_action = 0;
-
- /* Low success ratio , need to drop the rate */
- if (win->success_ratio < RATE_DECREASE_TH || !current_tpt) {
- D_RATE("decrease rate because of low success_ratio\n");
- scale_action = -1;
- /* No throughput measured yet for adjacent rates,
- * try increase */
- } else if (low_tpt == IL_INVALID_VALUE &&
- high_tpt == IL_INVALID_VALUE) {
-
- if (high != RATE_INVALID && win->success_ratio >= RATE_INCREASE_TH)
- scale_action = 1;
- else if (low != RATE_INVALID)
- scale_action = 0;
-
- /* Both adjacent throughputs are measured, but neither one has
- * better throughput; we're using the best rate, don't change
- * it! */
- } else if (low_tpt != IL_INVALID_VALUE &&
- high_tpt != IL_INVALID_VALUE &&
- low_tpt < current_tpt && high_tpt < current_tpt) {
-
- D_RATE("No action -- low [%d] & high [%d] < "
- "current_tpt [%d]\n",
- low_tpt, high_tpt, current_tpt);
- scale_action = 0;
-
- /* At least one of the rates has better throughput */
- } else {
- if (high_tpt != IL_INVALID_VALUE) {
-
- /* High rate has better throughput, Increase
- * rate */
- if (high_tpt > current_tpt &&
- win->success_ratio >= RATE_INCREASE_TH)
- scale_action = 1;
- else {
- D_RATE(
- "decrease rate because of high tpt\n");
- scale_action = 0;
- }
- } else if (low_tpt != IL_INVALID_VALUE) {
- if (low_tpt > current_tpt) {
- D_RATE(
- "decrease rate because of low tpt\n");
- scale_action = -1;
- } else if (win->success_ratio >= RATE_INCREASE_TH) {
- /* Lower rate has better
- * throughput,decrease rate */
- scale_action = 1;
- }
- }
- }
-
- /* Sanity check; asked for decrease, but success rate or throughput
- * has been good at old rate. Don't change it. */
- if (scale_action == -1 && low != RATE_INVALID &&
- (win->success_ratio > RATE_HIGH_TH ||
- current_tpt > 100 * rs_sta->expected_tpt[low]))
- scale_action = 0;
-
- switch (scale_action) {
- case -1:
-
- /* Decrese rate */
- if (low != RATE_INVALID)
- idx = low;
- break;
-
- case 1:
- /* Increase rate */
- if (high != RATE_INVALID)
- idx = high;
-
- break;
-
- case 0:
- default:
- /* No change */
- break;
- }
-
- D_RATE("Selected %d (action %d) - low %d high %d\n",
- idx, scale_action, low, high);
-
- out:
-
- if (sband->band == IEEE80211_BAND_5GHZ) {
- if (WARN_ON_ONCE(idx < IL_FIRST_OFDM_RATE))
- idx = IL_FIRST_OFDM_RATE;
- rs_sta->last_txrate_idx = idx;
- info->control.rates[0].idx = idx - IL_FIRST_OFDM_RATE;
- } else {
- rs_sta->last_txrate_idx = idx;
- info->control.rates[0].idx = rs_sta->last_txrate_idx;
- }
-
- D_RATE("leave: %d\n", idx);
-}
-
-#ifdef CONFIG_MAC80211_DEBUGFS
-static int il3945_open_file_generic(struct inode *inode, struct file *file)
-{
- file->private_data = inode->i_private;
- return 0;
-}
-
-static ssize_t il3945_sta_dbgfs_stats_table_read(struct file *file,
- char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- char *buff;
- int desc = 0;
- int j;
- ssize_t ret;
- struct il3945_rs_sta *lq_sta = file->private_data;
-
- buff = kmalloc(1024, GFP_KERNEL);
- if (!buff)
- return -ENOMEM;
-
- desc += sprintf(buff + desc, "tx packets=%d last rate idx=%d\n"
- "rate=0x%X flush time %d\n",
- lq_sta->tx_packets,
- lq_sta->last_txrate_idx,
- lq_sta->start_rate, jiffies_to_msecs(lq_sta->flush_time));
- for (j = 0; j < RATE_COUNT_3945; j++) {
- desc += sprintf(buff+desc,
- "counter=%d success=%d %%=%d\n",
- lq_sta->win[j].counter,
- lq_sta->win[j].success_counter,
- lq_sta->win[j].success_ratio);
- }
- ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc);
- kfree(buff);
- return ret;
-}
-
-static const struct file_operations rs_sta_dbgfs_stats_table_ops = {
- .read = il3945_sta_dbgfs_stats_table_read,
- .open = il3945_open_file_generic,
- .llseek = default_llseek,
-};
-
-static void il3945_add_debugfs(void *il, void *il_sta,
- struct dentry *dir)
-{
- struct il3945_rs_sta *lq_sta = il_sta;
-
- lq_sta->rs_sta_dbgfs_stats_table_file =
- debugfs_create_file("rate_stats_table", 0600, dir,
- lq_sta, &rs_sta_dbgfs_stats_table_ops);
-
-}
-
-static void il3945_remove_debugfs(void *il, void *il_sta)
-{
- struct il3945_rs_sta *lq_sta = il_sta;
- debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file);
-}
-#endif
-
-/*
- * Initialization of rate scaling information is done by driver after
- * the station is added. Since mac80211 calls this function before a
- * station is added we ignore it.
- */
-static void il3945_rs_rate_init_stub(void *il_r,
- struct ieee80211_supported_band *sband,
- struct ieee80211_sta *sta, void *il_sta)
-{
-}
-
-static struct rate_control_ops rs_ops = {
- .module = NULL,
- .name = RS_NAME,
- .tx_status = il3945_rs_tx_status,
- .get_rate = il3945_rs_get_rate,
- .rate_init = il3945_rs_rate_init_stub,
- .alloc = il3945_rs_alloc,
- .free = il3945_rs_free,
- .alloc_sta = il3945_rs_alloc_sta,
- .free_sta = il3945_rs_free_sta,
-#ifdef CONFIG_MAC80211_DEBUGFS
- .add_sta_debugfs = il3945_add_debugfs,
- .remove_sta_debugfs = il3945_remove_debugfs,
-#endif
-
-};
-void il3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)
-{
- struct il_priv *il = hw->priv;
- s32 rssi = 0;
- unsigned long flags;
- struct il3945_rs_sta *rs_sta;
- struct ieee80211_sta *sta;
- struct il3945_sta_priv *psta;
-
- D_RATE("enter\n");
-
- rcu_read_lock();
-
- sta = ieee80211_find_sta(il->ctx.vif,
- il->stations[sta_id].sta.sta.addr);
- if (!sta) {
- D_RATE("Unable to find station to initialize rate scaling.\n");
- rcu_read_unlock();
- return;
- }
-
- psta = (void *) sta->drv_priv;
- rs_sta = &psta->rs_sta;
-
- spin_lock_irqsave(&rs_sta->lock, flags);
-
- rs_sta->tgg = 0;
- switch (il->band) {
- case IEEE80211_BAND_2GHZ:
- /* TODO: this always does G, not a regression */
- if (il->ctx.active.flags &
- RXON_FLG_TGG_PROTECT_MSK) {
- rs_sta->tgg = 1;
- rs_sta->expected_tpt = il3945_expected_tpt_g_prot;
- } else
- rs_sta->expected_tpt = il3945_expected_tpt_g;
- break;
-
- case IEEE80211_BAND_5GHZ:
- rs_sta->expected_tpt = il3945_expected_tpt_a;
- break;
- case IEEE80211_NUM_BANDS:
- BUG();
- break;
- }
-
- spin_unlock_irqrestore(&rs_sta->lock, flags);
-
- rssi = il->_3945.last_rx_rssi;
- if (rssi == 0)
- rssi = IL_MIN_RSSI_VAL;
-
- D_RATE("Network RSSI: %d\n", rssi);
-
- rs_sta->start_rate = il3945_get_rate_idx_by_rssi(rssi, il->band);
-
- D_RATE("leave: rssi %d assign rate idx: "
- "%d (plcp 0x%x)\n", rssi, rs_sta->start_rate,
- il3945_rates[rs_sta->start_rate].plcp);
- rcu_read_unlock();
-}
-
-int il3945_rate_control_register(void)
-{
- return ieee80211_rate_control_register(&rs_ops);
-}
-
-void il3945_rate_control_unregister(void)
-{
- ieee80211_rate_control_unregister(&rs_ops);
-}
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff