/******************************************************************************
*
- * Copyright(c) 2005 - 2008 Intel Corporation. All rights reserved.
+ * Copyright(c) 2005 - 2009 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
#define IWL_RATE_MIN_FAILURE_TH 6 /* min failures to calc tpt */
#define IWL_RATE_MIN_SUCCESS_TH 8 /* min successes to calc tpt */
+/* max allowed rate miss before sync LQ cmd */
+#define IWL_MISSED_RATE_MAX 15
/* max time to accum history 2 seconds */
-#define IWL_RATE_SCALE_FLUSH_INTVL (2*HZ)
+#define IWL_RATE_SCALE_FLUSH_INTVL (3*HZ)
static u8 rs_ht_to_legacy[] = {
IWL_RATE_6M_INDEX, IWL_RATE_6M_INDEX,
u8 is_fat; /* 1 = 40 MHz channel width */
u8 is_dup; /* 1 = duplicated data streams */
u8 action; /* change modulation; IWL_[LEGACY/SISO/MIMO]_SWITCH_* */
+ u8 max_search; /* maximun number of tables we can search */
s32 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */
u32 current_rate; /* rate_n_flags, uCode API format */
struct iwl_rate_scale_data win[IWL_RATE_COUNT]; /* rate histories */
u32 table_count;
u32 total_failed; /* total failed frames, any/all rates */
u32 total_success; /* total successful frames, any/all rates */
- u32 flush_timer; /* time staying in mode before new search */
+ u64 flush_timer; /* time staying in mode before new search */
u8 action_counter; /* # mode-switch actions tried */
u8 is_green;
u16 active_mimo2_rate;
u16 active_mimo3_rate;
u16 active_rate_basic;
+ s8 max_rate_idx; /* Max rate set by user */
+ u8 missed_rate_counter;
struct iwl_link_quality_cmd lq;
struct iwl_scale_tbl_info lq_info[LQ_SIZE]; /* "active", "search" */
#ifdef CONFIG_MAC80211_DEBUGFS
struct dentry *rs_sta_dbgfs_scale_table_file;
struct dentry *rs_sta_dbgfs_stats_table_file;
+ struct dentry *rs_sta_dbgfs_rate_scale_data_file;
struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file;
u32 dbg_fixed_rate;
#endif
/* used to be in sta_info */
int last_txrate_idx;
+ /* last tx rate_n_flags */
+ u32 last_rate_n_flags;
};
static void rs_rate_scale_perform(struct iwl_priv *priv,
- struct ieee80211_hdr *hdr,
+ struct sk_buff *skb,
struct ieee80211_sta *sta,
struct iwl_lq_sta *lq_sta);
static void rs_fill_link_cmd(const struct iwl_priv *priv,
* 1, 2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48, 54, 60 MBits
* "G" is the only table that supports CCK (the first 4 rates).
*/
-/*FIXME:RS:need to separate tables for MIMO2/MIMO3*/
+
static s32 expected_tpt_A[IWL_RATE_COUNT] = {
0, 0, 0, 0, 40, 57, 72, 98, 121, 154, 177, 186, 186
};
0, 0, 0, 0, 46, 46, 82, 110, 132, 168, 192, 202, 211
};
-static s32 expected_tpt_mimo20MHz[IWL_RATE_COUNT] = {
+static s32 expected_tpt_mimo2_20MHz[IWL_RATE_COUNT] = {
0, 0, 0, 0, 74, 74, 123, 155, 179, 214, 236, 244, 251
};
-static s32 expected_tpt_mimo20MHzSGI[IWL_RATE_COUNT] = {
+static s32 expected_tpt_mimo2_20MHzSGI[IWL_RATE_COUNT] = {
0, 0, 0, 0, 81, 81, 131, 164, 188, 222, 243, 251, 257
};
0, 0, 0, 0, 83, 83, 135, 169, 193, 229, 250, 257, 264
};
-static s32 expected_tpt_mimo40MHz[IWL_RATE_COUNT] = {
+static s32 expected_tpt_mimo2_40MHz[IWL_RATE_COUNT] = {
0, 0, 0, 0, 123, 123, 182, 214, 235, 264, 279, 285, 289
};
-static s32 expected_tpt_mimo40MHzSGI[IWL_RATE_COUNT] = {
+static s32 expected_tpt_mimo2_40MHzSGI[IWL_RATE_COUNT] = {
0, 0, 0, 0, 131, 131, 191, 222, 242, 270, 284, 289, 293
};
+/* Expected throughput metric MIMO3 */
+static s32 expected_tpt_mimo3_20MHz[IWL_RATE_COUNT] = {
+ 0, 0, 0, 0, 99, 99, 153, 186, 208, 239, 256, 263, 268
+};
+
+static s32 expected_tpt_mimo3_20MHzSGI[IWL_RATE_COUNT] = {
+ 0, 0, 0, 0, 106, 106, 162, 194, 215, 246, 262, 268, 273
+};
+
+static s32 expected_tpt_mimo3_40MHz[IWL_RATE_COUNT] = {
+ 0, 0, 0, 0, 152, 152, 211, 239, 255, 279, 290, 294, 297
+};
+
+static s32 expected_tpt_mimo3_40MHzSGI[IWL_RATE_COUNT] = {
+ 0, 0, 0, 0, 160, 160, 219, 245, 261, 284, 294, 297, 300
+};
+
+/* mbps, mcs */
+const static struct iwl_rate_mcs_info iwl_rate_mcs[IWL_RATE_COUNT] = {
+ {"1", ""},
+ {"2", ""},
+ {"5.5", ""},
+ {"11", ""},
+ {"6", "BPSK 1/2"},
+ {"9", "BPSK 1/2"},
+ {"12", "QPSK 1/2"},
+ {"18", "QPSK 3/4"},
+ {"24", "16QAM 1/2"},
+ {"36", "16QAM 3/4"},
+ {"48", "64QAM 2/3"},
+ {"54", "64QAM 3/4"},
+ {"60", "64QAM 5/6"}
+};
+
static inline u8 rs_extract_rate(u32 rate_n_flags)
{
return (u8)(rate_n_flags & 0xFF);
struct ieee80211_sta *sta)
{
if (rs_tl_get_load(lq_data, tid) > IWL_AGG_LOAD_THRESHOLD) {
- IWL_DEBUG_HT("Starting Tx agg: STA: %pM tid: %d\n",
+ IWL_DEBUG_HT(priv, "Starting Tx agg: STA: %pM tid: %d\n",
sta->addr, tid);
ieee80211_start_tx_ba_session(priv->hw, sta->addr, tid);
}
* Fill uCode API rate_n_flags field, based on "search" or "active" table.
*/
/* FIXME:RS:remove this function and put the flags statically in the table */
-static u32 rate_n_flags_from_tbl(struct iwl_scale_tbl_info *tbl,
- int index, u8 use_green)
+static u32 rate_n_flags_from_tbl(struct iwl_priv *priv,
+ struct iwl_scale_tbl_info *tbl,
+ int index, u8 use_green)
{
u32 rate_n_flags = 0;
} else if (is_Ht(tbl->lq_type)) {
if (index > IWL_LAST_OFDM_RATE) {
- IWL_ERROR("invalid HT rate index %d\n", index);
+ IWL_ERR(priv, "Invalid HT rate index %d\n", index);
index = IWL_LAST_OFDM_RATE;
}
rate_n_flags = RATE_MCS_HT_MSK;
else
rate_n_flags |= iwl_rates[index].plcp_mimo3;
} else {
- IWL_ERROR("Invalid tbl->lq_type %d\n", tbl->lq_type);
+ IWL_ERR(priv, "Invalid tbl->lq_type %d\n", tbl->lq_type);
}
rate_n_flags |= ((tbl->ant_type << RATE_MCS_ANT_POS) &
rate_n_flags |= RATE_MCS_GF_MSK;
if (is_siso(tbl->lq_type) && tbl->is_SGI) {
rate_n_flags &= ~RATE_MCS_SGI_MSK;
- IWL_ERROR("GF was set with SGI:SISO\n");
+ IWL_ERR(priv, "GF was set with SGI:SISO\n");
}
}
}
tbl->is_dup = 0;
tbl->ant_type = (ant_msk >> RATE_MCS_ANT_POS);
tbl->lq_type = LQ_NONE;
+ tbl->max_search = IWL_MAX_SEARCH;
/* legacy rate format */
if (!(rate_n_flags & RATE_MCS_HT_MSK)) {
tbl->lq_type = LQ_MIMO2;
/* MIMO3 */
} else {
- if (num_of_ant == 3)
+ if (num_of_ant == 3) {
+ tbl->max_search = IWL_MAX_11N_MIMO3_SEARCH;
tbl->lq_type = LQ_MIMO3;
+ }
}
}
return 0;
return 1;
}
-/* FIXME:RS: in 4965 we don't use greenfield at all */
-/* FIXME:RS: don't use greenfield for now in TX */
-#if 0
-static inline u8 rs_use_green(struct iwl_priv *priv, struct ieee80211_conf *conf)
-{
- return (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
- priv->current_ht_config.is_green_field &&
- !priv->current_ht_config.non_GF_STA_present;
-}
-#endif
-static inline u8 rs_use_green(struct iwl_priv *priv, struct ieee80211_conf *conf)
+/* in 4965 we don't use greenfield at all */
+static inline u8 rs_use_green(struct iwl_priv *priv,
+ struct ieee80211_conf *conf)
{
- return 0;
+ u8 is_green;
+
+ if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)
+ is_green = 0;
+ else
+ is_green = (conf_is_ht(conf) &&
+ priv->current_ht_config.is_green_field &&
+ !priv->current_ht_config.non_GF_STA_present);
+ return is_green;
}
/**
break;
if (rate_mask & (1 << low))
break;
- IWL_DEBUG_RATE("Skipping masked lower rate: %d\n", low);
+ IWL_DEBUG_RATE(priv, "Skipping masked lower rate: %d\n", low);
}
high = index;
break;
if (rate_mask & (1 << high))
break;
- IWL_DEBUG_RATE("Skipping masked higher rate: %d\n", high);
+ IWL_DEBUG_RATE(priv, "Skipping masked higher rate: %d\n", high);
}
return (high << 8) | low;
tbl->is_fat = 0;
tbl->is_SGI = 0;
+ tbl->max_search = IWL_MAX_SEARCH;
}
rate_mask = rs_get_supported_rates(lq_sta, NULL, tbl->lq_type);
low = scale_index;
out:
- return rate_n_flags_from_tbl(tbl, low, is_green);
+ return rate_n_flags_from_tbl(lq_sta->drv, tbl, low, is_green);
}
/*
u8 active_index = 0;
s32 tpt = 0;
- IWL_DEBUG_RATE_LIMIT("get frame ack response, update rate scale window\n");
+ IWL_DEBUG_RATE_LIMIT(priv, "get frame ack response, update rate scale window\n");
if (!ieee80211_is_data(hdr->frame_control) ||
- is_multicast_ether_addr(hdr->addr1))
+ info->flags & IEEE80211_TX_CTL_NO_ACK)
return;
/* This packet was aggregated but doesn't carry rate scale info */
!(info->flags & IEEE80211_TX_STAT_AMPDU))
return;
- retries = info->status.rates[0].count - 1;
+ if (info->flags & IEEE80211_TX_STAT_AMPDU)
+ retries = 0;
+ else
+ retries = info->status.rates[0].count - 1;
if (retries > 15)
retries = 15;
(!!(tx_rate & RATE_MCS_GF_MSK) != !!(info->status.rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD)) ||
(hw->wiphy->bands[priv->band]->bitrates[rs_index].bitrate !=
hw->wiphy->bands[info->band]->bitrates[info->status.rates[0].idx].bitrate)) {
- IWL_DEBUG_RATE("initial rate does not match 0x%x\n", tx_rate);
+ IWL_DEBUG_RATE(priv, "initial rate does not match 0x%x\n", tx_rate);
/* the last LQ command could failed so the LQ in ucode not
* the same in driver sync up
*/
- iwl_send_lq_cmd(priv, &lq_sta->lq, CMD_ASYNC);
+ lq_sta->missed_rate_counter++;
+ if (lq_sta->missed_rate_counter > IWL_MISSED_RATE_MAX) {
+ lq_sta->missed_rate_counter = 0;
+ iwl_send_lq_cmd(priv, &lq_sta->lq, CMD_ASYNC);
+ }
goto out;
}
+ lq_sta->missed_rate_counter = 0;
/* Update frame history window with "failure" for each Tx retry. */
while (retries) {
/* Look up the rate and other info used for each tx attempt.
* else look up the rate that was, finally, successful.
*/
tx_rate = le32_to_cpu(table->rs_table[index].rate_n_flags);
+ lq_sta->last_rate_n_flags = tx_rate;
rs_get_tbl_info_from_mcs(tx_rate, priv->band, &tbl_type, &rs_index);
/* Update frame history window with "success" if Tx got ACKed ... */
tpt = search_tbl->expected_tpt[rs_index];
else
tpt = 0;
- if (info->flags & IEEE80211_TX_CTL_AMPDU)
+ if (info->flags & IEEE80211_TX_STAT_AMPDU)
rs_collect_tx_data(search_win, rs_index, tpt,
info->status.ampdu_ack_len,
info->status.ampdu_ack_map);
tpt = curr_tbl->expected_tpt[rs_index];
else
tpt = 0;
- if (info->flags & IEEE80211_TX_CTL_AMPDU)
+ if (info->flags & IEEE80211_TX_STAT_AMPDU)
rs_collect_tx_data(window, rs_index, tpt,
info->status.ampdu_ack_len,
info->status.ampdu_ack_map);
/* If not searching for new mode, increment success/failed counter
* ... these help determine when to start searching again */
if (lq_sta->stay_in_tbl) {
- if (info->flags & IEEE80211_TX_CTL_AMPDU) {
+ if (info->flags & IEEE80211_TX_STAT_AMPDU) {
lq_sta->total_success += info->status.ampdu_ack_map;
lq_sta->total_failed +=
(info->status.ampdu_ack_len - info->status.ampdu_ack_map);
}
/* See if there's a better rate or modulation mode to try. */
- rs_rate_scale_perform(priv, hdr, sta, lq_sta);
+ if (sta && sta->supp_rates[sband->band])
+ rs_rate_scale_perform(priv, skb, sta, lq_sta);
out:
return;
}
static void rs_set_stay_in_table(struct iwl_priv *priv, u8 is_legacy,
struct iwl_lq_sta *lq_sta)
{
- IWL_DEBUG_RATE("we are staying in the same table\n");
+ IWL_DEBUG_RATE(priv, "we are staying in the same table\n");
lq_sta->stay_in_tbl = 1; /* only place this gets set */
if (is_legacy) {
lq_sta->table_count_limit = IWL_LEGACY_TABLE_COUNT;
lq_sta->table_count = 0;
lq_sta->total_failed = 0;
lq_sta->total_success = 0;
+ lq_sta->flush_timer = jiffies;
+ lq_sta->action_counter = 0;
}
/*
tbl->expected_tpt = expected_tpt_siso20MHzSGI;
else
tbl->expected_tpt = expected_tpt_siso20MHz;
-
- } else if (is_mimo(tbl->lq_type)) { /* FIXME:need to separate mimo2/3 */
+ } else if (is_mimo2(tbl->lq_type)) {
+ if (tbl->is_fat && !lq_sta->is_dup)
+ if (tbl->is_SGI)
+ tbl->expected_tpt = expected_tpt_mimo2_40MHzSGI;
+ else
+ tbl->expected_tpt = expected_tpt_mimo2_40MHz;
+ else if (tbl->is_SGI)
+ tbl->expected_tpt = expected_tpt_mimo2_20MHzSGI;
+ else
+ tbl->expected_tpt = expected_tpt_mimo2_20MHz;
+ } else if (is_mimo3(tbl->lq_type)) {
if (tbl->is_fat && !lq_sta->is_dup)
if (tbl->is_SGI)
- tbl->expected_tpt = expected_tpt_mimo40MHzSGI;
+ tbl->expected_tpt = expected_tpt_mimo3_40MHzSGI;
else
- tbl->expected_tpt = expected_tpt_mimo40MHz;
+ tbl->expected_tpt = expected_tpt_mimo3_40MHz;
else if (tbl->is_SGI)
- tbl->expected_tpt = expected_tpt_mimo20MHzSGI;
+ tbl->expected_tpt = expected_tpt_mimo3_20MHzSGI;
else
- tbl->expected_tpt = expected_tpt_mimo20MHz;
+ tbl->expected_tpt = expected_tpt_mimo3_20MHz;
} else
tbl->expected_tpt = expected_tpt_G;
}
}
/*
- * Set up search table for MIMO
+ * Set up search table for MIMO2
*/
static int rs_switch_to_mimo2(struct iwl_priv *priv,
struct iwl_lq_sta *lq_sta,
s32 rate;
s8 is_green = lq_sta->is_green;
- if (!conf->ht.enabled || !sta->ht_cap.ht_supported)
+ if (!conf_is_ht(conf) || !sta->ht_cap.ht_supported)
return -1;
if (((sta->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> 2)
if (priv->hw_params.tx_chains_num < 2)
return -1;
- IWL_DEBUG_RATE("LQ: try to switch to MIMO2\n");
+ IWL_DEBUG_RATE(priv, "LQ: try to switch to MIMO2\n");
tbl->lq_type = LQ_MIMO2;
tbl->is_dup = lq_sta->is_dup;
tbl->action = 0;
+ tbl->max_search = IWL_MAX_SEARCH;
rate_mask = lq_sta->active_mimo2_rate;
- if (priv->current_ht_config.supported_chan_width
- == IWL_CHANNEL_WIDTH_40MHZ)
+ if (iwl_is_fat_tx_allowed(priv, &sta->ht_cap))
tbl->is_fat = 1;
else
tbl->is_fat = 0;
rate = rs_get_best_rate(priv, lq_sta, tbl, rate_mask, index);
- IWL_DEBUG_RATE("LQ: MIMO2 best rate %d mask %X\n", rate, rate_mask);
+ IWL_DEBUG_RATE(priv, "LQ: MIMO2 best rate %d mask %X\n", rate, rate_mask);
+ if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) {
+ IWL_DEBUG_RATE(priv, "Can't switch with index %d rate mask %x\n",
+ rate, rate_mask);
+ return -1;
+ }
+ tbl->current_rate = rate_n_flags_from_tbl(priv, tbl, rate, is_green);
+
+ IWL_DEBUG_RATE(priv, "LQ: Switch to new mcs %X index is green %X\n",
+ tbl->current_rate, is_green);
+ return 0;
+}
+
+/*
+ * Set up search table for MIMO3
+ */
+static int rs_switch_to_mimo3(struct iwl_priv *priv,
+ struct iwl_lq_sta *lq_sta,
+ struct ieee80211_conf *conf,
+ struct ieee80211_sta *sta,
+ struct iwl_scale_tbl_info *tbl, int index)
+{
+ u16 rate_mask;
+ s32 rate;
+ s8 is_green = lq_sta->is_green;
+
+ if (!conf_is_ht(conf) || !sta->ht_cap.ht_supported)
+ return -1;
+
+ if (((sta->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> 2)
+ == WLAN_HT_CAP_SM_PS_STATIC)
+ return -1;
+
+ /* Need both Tx chains/antennas to support MIMO */
+ if (priv->hw_params.tx_chains_num < 3)
+ return -1;
+
+ IWL_DEBUG_RATE(priv, "LQ: try to switch to MIMO3\n");
+
+ tbl->lq_type = LQ_MIMO3;
+ tbl->is_dup = lq_sta->is_dup;
+ tbl->action = 0;
+ tbl->max_search = IWL_MAX_11N_MIMO3_SEARCH;
+ rate_mask = lq_sta->active_mimo3_rate;
+
+ if (iwl_is_fat_tx_allowed(priv, &sta->ht_cap))
+ tbl->is_fat = 1;
+ else
+ tbl->is_fat = 0;
+
+ /* FIXME: - don't toggle SGI here
+ if (tbl->is_fat) {
+ if (priv->current_ht_config.sgf & HT_SHORT_GI_40MHZ_ONLY)
+ tbl->is_SGI = 1;
+ else
+ tbl->is_SGI = 0;
+ } else if (priv->current_ht_config.sgf & HT_SHORT_GI_20MHZ_ONLY)
+ tbl->is_SGI = 1;
+ else
+ tbl->is_SGI = 0;
+ */
+
+ rs_set_expected_tpt_table(lq_sta, tbl);
+
+ rate = rs_get_best_rate(priv, lq_sta, tbl, rate_mask, index);
+ IWL_DEBUG_RATE(priv, "LQ: MIMO3 best rate %d mask %X\n",
+ rate, rate_mask);
if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) {
- IWL_DEBUG_RATE("Can't switch with index %d rate mask %x\n",
+ IWL_DEBUG_RATE(priv, "Can't switch with index %d rate mask %x\n",
rate, rate_mask);
return -1;
}
- tbl->current_rate = rate_n_flags_from_tbl(tbl, rate, is_green);
+ tbl->current_rate = rate_n_flags_from_tbl(priv, tbl, rate, is_green);
- IWL_DEBUG_RATE("LQ: Switch to new mcs %X index is green %X\n",
+ IWL_DEBUG_RATE(priv, "LQ: Switch to new mcs %X index is green %X\n",
tbl->current_rate, is_green);
return 0;
}
u8 is_green = lq_sta->is_green;
s32 rate;
- if (!conf->ht.enabled || !sta->ht_cap.ht_supported)
+ if (!conf_is_ht(conf) || !sta->ht_cap.ht_supported)
return -1;
- IWL_DEBUG_RATE("LQ: try to switch to SISO\n");
+ IWL_DEBUG_RATE(priv, "LQ: try to switch to SISO\n");
tbl->is_dup = lq_sta->is_dup;
tbl->lq_type = LQ_SISO;
tbl->action = 0;
+ tbl->max_search = IWL_MAX_SEARCH;
rate_mask = lq_sta->active_siso_rate;
- if (priv->current_ht_config.supported_chan_width
- == IWL_CHANNEL_WIDTH_40MHZ)
+ if (iwl_is_fat_tx_allowed(priv, &sta->ht_cap))
tbl->is_fat = 1;
else
tbl->is_fat = 0;
rs_set_expected_tpt_table(lq_sta, tbl);
rate = rs_get_best_rate(priv, lq_sta, tbl, rate_mask, index);
- IWL_DEBUG_RATE("LQ: get best rate %d mask %X\n", rate, rate_mask);
+ IWL_DEBUG_RATE(priv, "LQ: get best rate %d mask %X\n", rate, rate_mask);
if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) {
- IWL_DEBUG_RATE("can not switch with index %d rate mask %x\n",
+ IWL_DEBUG_RATE(priv, "can not switch with index %d rate mask %x\n",
rate, rate_mask);
return -1;
}
- tbl->current_rate = rate_n_flags_from_tbl(tbl, rate, is_green);
- IWL_DEBUG_RATE("LQ: Switch to new mcs %X index is green %X\n",
+ tbl->current_rate = rate_n_flags_from_tbl(priv, tbl, rate, is_green);
+ IWL_DEBUG_RATE(priv, "LQ: Switch to new mcs %X index is green %X\n",
tbl->current_rate, is_green);
return 0;
}
u8 valid_tx_ant = priv->hw_params.valid_tx_ant;
u8 tx_chains_num = priv->hw_params.tx_chains_num;
int ret = 0;
+ u8 update_search_tbl_counter = 0;
for (; ;) {
+ lq_sta->action_counter++;
switch (tbl->action) {
case IWL_LEGACY_SWITCH_ANTENNA1:
case IWL_LEGACY_SWITCH_ANTENNA2:
- IWL_DEBUG_RATE("LQ: Legacy toggle Antenna\n");
-
- lq_sta->action_counter++;
+ IWL_DEBUG_RATE(priv, "LQ: Legacy toggle Antenna\n");
if ((tbl->action == IWL_LEGACY_SWITCH_ANTENNA1 &&
tx_chains_num <= 1) ||
if (rs_toggle_antenna(valid_tx_ant,
&search_tbl->current_rate, search_tbl)) {
+ update_search_tbl_counter = 1;
rs_set_expected_tpt_table(lq_sta, search_tbl);
goto out;
}
break;
case IWL_LEGACY_SWITCH_SISO:
- IWL_DEBUG_RATE("LQ: Legacy switch to SISO\n");
+ IWL_DEBUG_RATE(priv, "LQ: Legacy switch to SISO\n");
/* Set up search table to try SISO */
memcpy(search_tbl, tbl, sz);
case IWL_LEGACY_SWITCH_MIMO2_AB:
case IWL_LEGACY_SWITCH_MIMO2_AC:
case IWL_LEGACY_SWITCH_MIMO2_BC:
- IWL_DEBUG_RATE("LQ: Legacy switch to MIMO2\n");
+ IWL_DEBUG_RATE(priv, "LQ: Legacy switch to MIMO2\n");
/* Set up search table to try MIMO */
memcpy(search_tbl, tbl, sz);
goto out;
}
break;
+
+ case IWL_LEGACY_SWITCH_MIMO3_ABC:
+ IWL_DEBUG_RATE(priv, "LQ: Legacy switch to MIMO3\n");
+
+ /* Set up search table to try MIMO3 */
+ memcpy(search_tbl, tbl, sz);
+ search_tbl->is_SGI = 0;
+
+ search_tbl->ant_type = ANT_ABC;
+
+ if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type))
+ break;
+
+ ret = rs_switch_to_mimo3(priv, lq_sta, conf, sta,
+ search_tbl, index);
+ if (!ret) {
+ lq_sta->action_counter = 0;
+ goto out;
+ }
+ break;
}
tbl->action++;
- if (tbl->action > IWL_LEGACY_SWITCH_MIMO2_BC)
+ if (tbl->action > IWL_LEGACY_SWITCH_MIMO3_ABC)
tbl->action = IWL_LEGACY_SWITCH_ANTENNA1;
if (tbl->action == start_action)
out:
lq_sta->search_better_tbl = 1;
tbl->action++;
- if (tbl->action > IWL_LEGACY_SWITCH_MIMO2_BC)
+ if (tbl->action > IWL_LEGACY_SWITCH_MIMO3_ABC)
tbl->action = IWL_LEGACY_SWITCH_ANTENNA1;
+ if (update_search_tbl_counter)
+ search_tbl->action = tbl->action;
return 0;
}
u8 start_action = tbl->action;
u8 valid_tx_ant = priv->hw_params.valid_tx_ant;
u8 tx_chains_num = priv->hw_params.tx_chains_num;
+ u8 update_search_tbl_counter = 0;
int ret;
for (;;) {
switch (tbl->action) {
case IWL_SISO_SWITCH_ANTENNA1:
case IWL_SISO_SWITCH_ANTENNA2:
- IWL_DEBUG_RATE("LQ: SISO toggle Antenna\n");
+ IWL_DEBUG_RATE(priv, "LQ: SISO toggle Antenna\n");
if ((tbl->action == IWL_SISO_SWITCH_ANTENNA1 &&
tx_chains_num <= 1) ||
memcpy(search_tbl, tbl, sz);
if (rs_toggle_antenna(valid_tx_ant,
- &search_tbl->current_rate, search_tbl))
+ &search_tbl->current_rate, search_tbl)) {
+ update_search_tbl_counter = 1;
goto out;
+ }
break;
case IWL_SISO_SWITCH_MIMO2_AB:
case IWL_SISO_SWITCH_MIMO2_AC:
case IWL_SISO_SWITCH_MIMO2_BC:
- IWL_DEBUG_RATE("LQ: SISO switch to MIMO2\n");
+ IWL_DEBUG_RATE(priv, "LQ: SISO switch to MIMO2\n");
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = 0;
HT_SHORT_GI_40MHZ))
break;
- IWL_DEBUG_RATE("LQ: SISO toggle SGI/NGI\n");
+ IWL_DEBUG_RATE(priv, "LQ: SISO toggle SGI/NGI\n");
memcpy(search_tbl, tbl, sz);
if (is_green) {
if (!tbl->is_SGI)
break;
else
- IWL_ERROR("SGI was set in GF+SISO\n");
+ IWL_ERR(priv,
+ "SGI was set in GF+SISO\n");
}
search_tbl->is_SGI = !tbl->is_SGI;
rs_set_expected_tpt_table(lq_sta, search_tbl);
if (tpt >= search_tbl->expected_tpt[index])
break;
}
- search_tbl->current_rate = rate_n_flags_from_tbl(
- search_tbl, index, is_green);
+ search_tbl->current_rate =
+ rate_n_flags_from_tbl(priv, search_tbl,
+ index, is_green);
+ update_search_tbl_counter = 1;
goto out;
+ case IWL_SISO_SWITCH_MIMO3_ABC:
+ IWL_DEBUG_RATE(priv, "LQ: SISO switch to MIMO3\n");
+ memcpy(search_tbl, tbl, sz);
+ search_tbl->is_SGI = 0;
+ search_tbl->ant_type = ANT_ABC;
+
+ if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type))
+ break;
+
+ ret = rs_switch_to_mimo3(priv, lq_sta, conf, sta,
+ search_tbl, index);
+ if (!ret)
+ goto out;
+ break;
}
tbl->action++;
- if (tbl->action > IWL_SISO_SWITCH_GI)
+ if (tbl->action > IWL_LEGACY_SWITCH_MIMO3_ABC)
tbl->action = IWL_SISO_SWITCH_ANTENNA1;
if (tbl->action == start_action)
out:
lq_sta->search_better_tbl = 1;
tbl->action++;
- if (tbl->action > IWL_SISO_SWITCH_GI)
+ if (tbl->action > IWL_SISO_SWITCH_MIMO3_ABC)
tbl->action = IWL_SISO_SWITCH_ANTENNA1;
+ if (update_search_tbl_counter)
+ search_tbl->action = tbl->action;
+
return 0;
}
/*
- * Try to switch to new modulation mode from MIMO
+ * Try to switch to new modulation mode from MIMO2
*/
-static int rs_move_mimo_to_other(struct iwl_priv *priv,
+static int rs_move_mimo2_to_other(struct iwl_priv *priv,
struct iwl_lq_sta *lq_sta,
struct ieee80211_conf *conf,
struct ieee80211_sta *sta, int index)
u8 start_action = tbl->action;
u8 valid_tx_ant = priv->hw_params.valid_tx_ant;
u8 tx_chains_num = priv->hw_params.tx_chains_num;
+ u8 update_search_tbl_counter = 0;
int ret;
for (;;) {
switch (tbl->action) {
case IWL_MIMO2_SWITCH_ANTENNA1:
case IWL_MIMO2_SWITCH_ANTENNA2:
- IWL_DEBUG_RATE("LQ: MIMO toggle Antennas\n");
+ IWL_DEBUG_RATE(priv, "LQ: MIMO2 toggle Antennas\n");
if (tx_chains_num <= 2)
break;
memcpy(search_tbl, tbl, sz);
if (rs_toggle_antenna(valid_tx_ant,
- &search_tbl->current_rate, search_tbl))
+ &search_tbl->current_rate, search_tbl)) {
+ update_search_tbl_counter = 1;
goto out;
+ }
break;
case IWL_MIMO2_SWITCH_SISO_A:
case IWL_MIMO2_SWITCH_SISO_B:
case IWL_MIMO2_SWITCH_SISO_C:
- IWL_DEBUG_RATE("LQ: MIMO2 switch to SISO\n");
+ IWL_DEBUG_RATE(priv, "LQ: MIMO2 switch to SISO\n");
/* Set up new search table for SISO */
memcpy(search_tbl, tbl, sz);
HT_SHORT_GI_40MHZ))
break;
- IWL_DEBUG_RATE("LQ: MIMO toggle SGI/NGI\n");
+ IWL_DEBUG_RATE(priv, "LQ: MIMO2 toggle SGI/NGI\n");
- /* Set up new search table for MIMO */
+ /* Set up new search table for MIMO2 */
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = !tbl->is_SGI;
rs_set_expected_tpt_table(lq_sta, search_tbl);
if (tpt >= search_tbl->expected_tpt[index])
break;
}
- search_tbl->current_rate = rate_n_flags_from_tbl(
- search_tbl, index, is_green);
+ search_tbl->current_rate =
+ rate_n_flags_from_tbl(priv, search_tbl,
+ index, is_green);
+ update_search_tbl_counter = 1;
goto out;
+ case IWL_MIMO2_SWITCH_MIMO3_ABC:
+ IWL_DEBUG_RATE(priv, "LQ: MIMO2 switch to MIMO3\n");
+ memcpy(search_tbl, tbl, sz);
+ search_tbl->is_SGI = 0;
+ search_tbl->ant_type = ANT_ABC;
+
+ if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type))
+ break;
+
+ ret = rs_switch_to_mimo3(priv, lq_sta, conf, sta,
+ search_tbl, index);
+ if (!ret)
+ goto out;
+
+ break;
}
tbl->action++;
- if (tbl->action > IWL_MIMO2_SWITCH_GI)
+ if (tbl->action > IWL_MIMO2_SWITCH_MIMO3_ABC)
tbl->action = IWL_MIMO2_SWITCH_ANTENNA1;
if (tbl->action == start_action)
out:
lq_sta->search_better_tbl = 1;
tbl->action++;
- if (tbl->action > IWL_MIMO2_SWITCH_GI)
+ if (tbl->action > IWL_MIMO2_SWITCH_MIMO3_ABC)
tbl->action = IWL_MIMO2_SWITCH_ANTENNA1;
+ if (update_search_tbl_counter)
+ search_tbl->action = tbl->action;
+
+ return 0;
+
+}
+
+/*
+ * Try to switch to new modulation mode from MIMO3
+ */
+static int rs_move_mimo3_to_other(struct iwl_priv *priv,
+ struct iwl_lq_sta *lq_sta,
+ struct ieee80211_conf *conf,
+ struct ieee80211_sta *sta, int index)
+{
+ s8 is_green = lq_sta->is_green;
+ struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
+ struct iwl_scale_tbl_info *search_tbl =
+ &(lq_sta->lq_info[(1 - lq_sta->active_tbl)]);
+ struct iwl_rate_scale_data *window = &(tbl->win[index]);
+ u32 sz = (sizeof(struct iwl_scale_tbl_info) -
+ (sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT));
+ u8 start_action = tbl->action;
+ u8 valid_tx_ant = priv->hw_params.valid_tx_ant;
+ u8 tx_chains_num = priv->hw_params.tx_chains_num;
+ int ret;
+ u8 update_search_tbl_counter = 0;
+
+ for (;;) {
+ lq_sta->action_counter++;
+ switch (tbl->action) {
+ case IWL_MIMO3_SWITCH_ANTENNA1:
+ case IWL_MIMO3_SWITCH_ANTENNA2:
+ IWL_DEBUG_RATE(priv, "LQ: MIMO3 toggle Antennas\n");
+
+ if (tx_chains_num <= 3)
+ break;
+
+ if (window->success_ratio >= IWL_RS_GOOD_RATIO)
+ break;
+
+ memcpy(search_tbl, tbl, sz);
+ if (rs_toggle_antenna(valid_tx_ant,
+ &search_tbl->current_rate, search_tbl))
+ goto out;
+ break;
+ case IWL_MIMO3_SWITCH_SISO_A:
+ case IWL_MIMO3_SWITCH_SISO_B:
+ case IWL_MIMO3_SWITCH_SISO_C:
+ IWL_DEBUG_RATE(priv, "LQ: MIMO3 switch to SISO\n");
+
+ /* Set up new search table for SISO */
+ memcpy(search_tbl, tbl, sz);
+
+ if (tbl->action == IWL_MIMO3_SWITCH_SISO_A)
+ search_tbl->ant_type = ANT_A;
+ else if (tbl->action == IWL_MIMO3_SWITCH_SISO_B)
+ search_tbl->ant_type = ANT_B;
+ else
+ search_tbl->ant_type = ANT_C;
+
+ if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type))
+ break;
+
+ ret = rs_switch_to_siso(priv, lq_sta, conf, sta,
+ search_tbl, index);
+ if (!ret)
+ goto out;
+
+ break;
+
+ case IWL_MIMO3_SWITCH_MIMO2_AB:
+ case IWL_MIMO3_SWITCH_MIMO2_AC:
+ case IWL_MIMO3_SWITCH_MIMO2_BC:
+ IWL_DEBUG_RATE(priv, "LQ: MIMO3 switch to MIMO2\n");
+
+ memcpy(search_tbl, tbl, sz);
+ search_tbl->is_SGI = 0;
+ if (tbl->action == IWL_MIMO3_SWITCH_MIMO2_AB)
+ search_tbl->ant_type = ANT_AB;
+ else if (tbl->action == IWL_MIMO3_SWITCH_MIMO2_AC)
+ search_tbl->ant_type = ANT_AC;
+ else
+ search_tbl->ant_type = ANT_BC;
+
+ if (!rs_is_valid_ant(valid_tx_ant, search_tbl->ant_type))
+ break;
+
+ ret = rs_switch_to_mimo2(priv, lq_sta, conf, sta,
+ search_tbl, index);
+ if (!ret)
+ goto out;
+
+ break;
+
+ case IWL_MIMO3_SWITCH_GI:
+ if (!tbl->is_fat &&
+ !(priv->current_ht_config.sgf &
+ HT_SHORT_GI_20MHZ))
+ break;
+ if (tbl->is_fat &&
+ !(priv->current_ht_config.sgf &
+ HT_SHORT_GI_40MHZ))
+ break;
+
+ IWL_DEBUG_RATE(priv, "LQ: MIMO3 toggle SGI/NGI\n");
+
+ /* Set up new search table for MIMO */
+ memcpy(search_tbl, tbl, sz);
+ search_tbl->is_SGI = !tbl->is_SGI;
+ rs_set_expected_tpt_table(lq_sta, search_tbl);
+ /*
+ * If active table already uses the fastest possible
+ * modulation (dual stream with short guard interval),
+ * and it's working well, there's no need to look
+ * for a better type of modulation!
+ */
+ if (tbl->is_SGI) {
+ s32 tpt = lq_sta->last_tpt / 100;
+ if (tpt >= search_tbl->expected_tpt[index])
+ break;
+ }
+ search_tbl->current_rate =
+ rate_n_flags_from_tbl(priv, search_tbl,
+ index, is_green);
+ update_search_tbl_counter = 1;
+ goto out;
+ }
+ tbl->action++;
+ if (tbl->action > IWL_MIMO3_SWITCH_GI)
+ tbl->action = IWL_MIMO3_SWITCH_ANTENNA1;
+
+ if (tbl->action == start_action)
+ break;
+ }
+ search_tbl->lq_type = LQ_NONE;
+ return 0;
+ out:
+ lq_sta->search_better_tbl = 1;
+ tbl->action++;
+ if (tbl->action > IWL_MIMO3_SWITCH_GI)
+ tbl->action = IWL_MIMO3_SWITCH_ANTENNA1;
+ if (update_search_tbl_counter)
+ search_tbl->action = tbl->action;
+
return 0;
}
/* Elapsed time using current modulation mode */
if (lq_sta->flush_timer)
flush_interval_passed =
- time_after(jiffies,
- (unsigned long)(lq_sta->flush_timer +
+ time_after(jiffies,
+ (unsigned long)(lq_sta->flush_timer +
IWL_RATE_SCALE_FLUSH_INTVL));
/*
(lq_sta->total_success > lq_sta->max_success_limit) ||
((!lq_sta->search_better_tbl) && (lq_sta->flush_timer)
&& (flush_interval_passed))) {
- IWL_DEBUG_RATE("LQ: stay is expired %d %d %d\n:",
+ IWL_DEBUG_RATE(priv, "LQ: stay is expired %d %d %d\n:",
lq_sta->total_failed,
lq_sta->total_success,
flush_interval_passed);
lq_sta->table_count_limit) {
lq_sta->table_count = 0;
- IWL_DEBUG_RATE("LQ: stay in table clear win\n");
+ IWL_DEBUG_RATE(priv, "LQ: stay in table clear win\n");
for (i = 0; i < IWL_RATE_COUNT; i++)
rs_rate_scale_clear_window(
&(tbl->win[i]));
* Do rate scaling and search for new modulation mode.
*/
static void rs_rate_scale_perform(struct iwl_priv *priv,
- struct ieee80211_hdr *hdr,
+ struct sk_buff *skb,
struct ieee80211_sta *sta,
struct iwl_lq_sta *lq_sta)
{
struct ieee80211_hw *hw = priv->hw;
struct ieee80211_conf *conf = &hw->conf;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
int low = IWL_RATE_INVALID;
int high = IWL_RATE_INVALID;
int index;
u16 high_low;
s32 sr;
u8 tid = MAX_TID_COUNT;
+ struct iwl_tid_data *tid_data;
- IWL_DEBUG_RATE("rate scale calculate new rate for skb\n");
+ IWL_DEBUG_RATE(priv, "rate scale calculate new rate for skb\n");
- /* Send management frames and broadcast/multicast data using
- * lowest rate. */
+ /* Send management frames and NO_ACK data using lowest rate. */
/* TODO: this could probably be improved.. */
if (!ieee80211_is_data(hdr->frame_control) ||
- is_multicast_ether_addr(hdr->addr1))
+ info->flags & IEEE80211_TX_CTL_NO_ACK)
return;
if (!sta || !lq_sta)
active_tbl = 1 - lq_sta->active_tbl;
tbl = &(lq_sta->lq_info[active_tbl]);
+ if (is_legacy(tbl->lq_type))
+ lq_sta->is_green = 0;
+ else
+ lq_sta->is_green = rs_use_green(priv, conf);
is_green = lq_sta->is_green;
/* current tx rate */
index = lq_sta->last_txrate_idx;
- IWL_DEBUG_RATE("Rate scale index %d for type %d\n", index,
+ IWL_DEBUG_RATE(priv, "Rate scale index %d for type %d\n", index,
tbl->lq_type);
/* rates available for this association, and for modulation mode */
rate_mask = rs_get_supported_rates(lq_sta, hdr, tbl->lq_type);
- IWL_DEBUG_RATE("mask 0x%04X \n", rate_mask);
+ IWL_DEBUG_RATE(priv, "mask 0x%04X \n", rate_mask);
/* mask with station rate restriction */
if (is_legacy(tbl->lq_type)) {
rate_scale_index_msk = rate_mask;
if (!((1 << index) & rate_scale_index_msk)) {
- IWL_ERROR("Current Rate is not valid\n");
+ IWL_ERR(priv, "Current Rate is not valid\n");
return;
}
/* Get expected throughput table and history window for current rate */
if (!tbl->expected_tpt) {
- IWL_ERROR("tbl->expected_tpt is NULL\n");
+ IWL_ERR(priv, "tbl->expected_tpt is NULL\n");
return;
}
+ /* force user max rate if set by user */
+ if ((lq_sta->max_rate_idx != -1) &&
+ (lq_sta->max_rate_idx < index)) {
+ index = lq_sta->max_rate_idx;
+ update_lq = 1;
+ window = &(tbl->win[index]);
+ goto lq_update;
+ }
+
window = &(tbl->win[index]);
/*
fail_count = window->counter - window->success_counter;
if ((fail_count < IWL_RATE_MIN_FAILURE_TH) &&
(window->success_counter < IWL_RATE_MIN_SUCCESS_TH)) {
- IWL_DEBUG_RATE("LQ: still below TH. succ=%d total=%d "
+ IWL_DEBUG_RATE(priv, "LQ: still below TH. succ=%d total=%d "
"for index %d\n",
window->success_counter, window->counter, index);
* continuing to use the setup that we've been trying. */
if (window->average_tpt > lq_sta->last_tpt) {
- IWL_DEBUG_RATE("LQ: SWITCHING TO NEW TABLE "
+ IWL_DEBUG_RATE(priv, "LQ: SWITCHING TO NEW TABLE "
"suc=%d cur-tpt=%d old-tpt=%d\n",
window->success_ratio,
window->average_tpt,
/* Else poor success; go back to mode in "active" table */
} else {
- IWL_DEBUG_RATE("LQ: GOING BACK TO THE OLD TABLE "
+ IWL_DEBUG_RATE(priv, "LQ: GOING BACK TO THE OLD TABLE "
"suc=%d cur-tpt=%d old-tpt=%d\n",
window->success_ratio,
window->average_tpt,
low = high_low & 0xff;
high = (high_low >> 8) & 0xff;
+ /* If user set max rate, dont allow higher than user constrain */
+ if ((lq_sta->max_rate_idx != -1) &&
+ (lq_sta->max_rate_idx < high))
+ high = IWL_RATE_INVALID;
+
sr = window->success_ratio;
/* Collect measured throughputs for current and adjacent rates */
/* Too many failures, decrease rate */
if ((sr <= IWL_RATE_DECREASE_TH) || (current_tpt == 0)) {
- IWL_DEBUG_RATE("decrease rate because of low success_ratio\n");
+ IWL_DEBUG_RATE(priv, "decrease rate because of low success_ratio\n");
scale_action = -1;
/* No throughput measured yet for adjacent rates; try increase. */
if (high != IWL_RATE_INVALID && sr >= IWL_RATE_INCREASE_TH)
scale_action = 1;
else if (low != IWL_RATE_INVALID)
- scale_action = -1;
+ scale_action = 0;
}
/* Both adjacent throughputs are measured, but neither one has better
sr >= IWL_RATE_INCREASE_TH) {
scale_action = 1;
} else {
- IWL_DEBUG_RATE
- ("decrease rate because of high tpt\n");
- scale_action = -1;
+ scale_action = 0;
}
/* Lower adjacent rate's throughput is measured */
} else if (low_tpt != IWL_INVALID_VALUE) {
/* Lower rate has better throughput */
if (low_tpt > current_tpt) {
- IWL_DEBUG_RATE
- ("decrease rate because of low tpt\n");
+ IWL_DEBUG_RATE(priv,
+ "decrease rate because of low tpt\n");
scale_action = -1;
} else if (sr >= IWL_RATE_INCREASE_TH) {
scale_action = 1;
update_lq = 1;
index = low;
}
+
break;
case 1:
/* Increase starting rate, update uCode's rate table */
break;
}
- IWL_DEBUG_RATE("choose rate scale index %d action %d low %d "
+ IWL_DEBUG_RATE(priv, "choose rate scale index %d action %d low %d "
"high %d type %d\n",
index, scale_action, low, high, tbl->lq_type);
lq_update:
/* Replace uCode's rate table for the destination station. */
if (update_lq) {
- rate = rate_n_flags_from_tbl(tbl, index, is_green);
+ rate = rate_n_flags_from_tbl(priv, tbl, index, is_green);
rs_fill_link_cmd(priv, lq_sta, rate);
iwl_send_lq_cmd(priv, &lq_sta->lq, CMD_ASYNC);
}
rs_move_legacy_other(priv, lq_sta, conf, sta, index);
else if (is_siso(tbl->lq_type))
rs_move_siso_to_other(priv, lq_sta, conf, sta, index);
+ else if (is_mimo2(tbl->lq_type))
+ rs_move_mimo2_to_other(priv, lq_sta, conf, sta, index);
else
- rs_move_mimo_to_other(priv, lq_sta, conf, sta, index);
+ rs_move_mimo3_to_other(priv, lq_sta, conf, sta, index);
/* If new "search" mode was selected, set up in uCode table */
if (lq_sta->search_better_tbl) {
/* Use new "search" start rate */
index = iwl_hwrate_to_plcp_idx(tbl->current_rate);
- IWL_DEBUG_RATE("Switch current mcs: %X index: %d\n",
+ IWL_DEBUG_RATE(priv, "Switch current mcs: %X index: %d\n",
tbl->current_rate, index);
rs_fill_link_cmd(priv, lq_sta, tbl->current_rate);
iwl_send_lq_cmd(priv, &lq_sta->lq, CMD_ASYNC);
- }
+ } else
+ done_search = 1;
+ }
+ if (done_search && !lq_sta->stay_in_tbl) {
/* If the "active" (non-search) mode was legacy,
* and we've tried switching antennas,
* but we haven't been able to try HT modes (not available),
* stay with best antenna legacy modulation for a while
* before next round of mode comparisons. */
tbl1 = &(lq_sta->lq_info[lq_sta->active_tbl]);
- if (is_legacy(tbl1->lq_type) && !conf->ht.enabled &&
- lq_sta->action_counter >= 1) {
- lq_sta->action_counter = 0;
- IWL_DEBUG_RATE("LQ: STAY in legacy table\n");
+ if (is_legacy(tbl1->lq_type) && !conf_is_ht(conf) &&
+ lq_sta->action_counter > tbl1->max_search) {
+ IWL_DEBUG_RATE(priv, "LQ: STAY in legacy table\n");
rs_set_stay_in_table(priv, 1, lq_sta);
}
* have been tried and compared, stay in this best modulation
* mode for a while before next round of mode comparisons. */
if (lq_sta->enable_counter &&
- (lq_sta->action_counter >= IWL_ACTION_LIMIT)) {
+ (lq_sta->action_counter >= tbl1->max_search)) {
if ((lq_sta->last_tpt > IWL_AGG_TPT_THREHOLD) &&
(lq_sta->tx_agg_tid_en & (1 << tid)) &&
(tid != MAX_TID_COUNT)) {
- IWL_DEBUG_RATE("try to aggregate tid %d\n", tid);
- rs_tl_turn_on_agg(priv, tid, lq_sta, sta);
+ tid_data =
+ &priv->stations[lq_sta->lq.sta_id].tid[tid];
+ if (tid_data->agg.state == IWL_AGG_OFF) {
+ IWL_DEBUG_RATE(priv,
+ "try to aggregate tid %d\n",
+ tid);
+ rs_tl_turn_on_agg(priv, tid,
+ lq_sta, sta);
+ }
}
- lq_sta->action_counter = 0;
rs_set_stay_in_table(priv, 0, lq_sta);
}
-
- /*
- * Else, don't search for a new modulation mode.
- * Put new timestamp in stay-in-modulation-mode flush timer if:
- * 1) Not changing rates right now
- * 2) Not just finishing up a search
- * 3) flush timer is empty
- */
- } else {
- if ((!update_lq) && (!done_search) && (!lq_sta->flush_timer))
- lq_sta->flush_timer = jiffies;
}
out:
- tbl->current_rate = rate_n_flags_from_tbl(tbl, index, is_green);
+ tbl->current_rate = rate_n_flags_from_tbl(priv, tbl, index, is_green);
i = index;
lq_sta->last_txrate_idx = i;
if (!rs_is_valid_ant(valid_tx_ant, tbl->ant_type))
rs_toggle_antenna(valid_tx_ant, &rate, tbl);
- rate = rate_n_flags_from_tbl(tbl, rate_idx, use_green);
+ rate = rate_n_flags_from_tbl(priv, tbl, rate_idx, use_green);
tbl->current_rate = rate;
rs_set_expected_tpt_table(lq_sta, tbl);
rs_fill_link_cmd(NULL, lq_sta, rate);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct iwl_lq_sta *lq_sta = priv_sta;
int rate_idx;
+ u64 mask_bit = 0;
+
+ IWL_DEBUG_RATE_LIMIT(priv, "rate scale calculate new rate for skb\n");
+
+ /* Get max rate if user set max rate */
+ if (lq_sta) {
+ lq_sta->max_rate_idx = txrc->max_rate_idx;
+ if ((sband->band == IEEE80211_BAND_5GHZ) &&
+ (lq_sta->max_rate_idx != -1))
+ lq_sta->max_rate_idx += IWL_FIRST_OFDM_RATE;
+ if ((lq_sta->max_rate_idx < 0) ||
+ (lq_sta->max_rate_idx >= IWL_RATE_COUNT))
+ lq_sta->max_rate_idx = -1;
+ }
- IWL_DEBUG_RATE_LIMIT("rate scale calculate new rate for skb\n");
+ if (sta)
+ mask_bit = sta->supp_rates[sband->band];
- /* Send management frames and broadcast/multicast data using lowest
- * rate. */
+ /* Send management frames and NO_ACK data using lowest rate. */
if (!ieee80211_is_data(hdr->frame_control) ||
- is_multicast_ether_addr(hdr->addr1) || !sta || !lq_sta) {
- info->control.rates[0].idx = rate_lowest_index(sband, sta);
+ info->flags & IEEE80211_TX_CTL_NO_ACK || !sta || !lq_sta) {
+ if (!mask_bit)
+ info->control.rates[0].idx =
+ rate_lowest_index(sband, NULL);
+ else
+ info->control.rates[0].idx =
+ rate_lowest_index(sband, sta);
+ if (info->flags & IEEE80211_TX_CTL_NO_ACK)
+ info->control.rates[0].count = 1;
return;
}
if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
!lq_sta->ibss_sta_added) {
- u8 sta_id = iwl_find_station(priv, hdr->addr1);
+ u8 sta_id = priv->cfg->ops->smgmt->find_station(priv,
+ hdr->addr1);
if (sta_id == IWL_INVALID_STATION) {
- IWL_DEBUG_RATE("LQ: ADD station %pM\n",
+ IWL_DEBUG_RATE(priv, "LQ: ADD station %pM\n",
hdr->addr1);
- sta_id = iwl_add_station_flags(priv, hdr->addr1,
- 0, CMD_ASYNC, NULL);
+ sta_id = priv->cfg->ops->smgmt->add_station(priv,
+ hdr->addr1, 0,
+ CMD_ASYNC, NULL);
}
if ((sta_id != IWL_INVALID_STATION)) {
lq_sta->lq.sta_id = sta_id;
int i, j;
priv = (struct iwl_priv *)priv_rate;
- IWL_DEBUG_RATE("create station rate scale window\n");
+ IWL_DEBUG_RATE(priv, "create station rate scale window\n");
lq_sta = kzalloc(sizeof(struct iwl_lq_sta), gfp);
struct ieee80211_conf *conf = &priv->hw->conf;
struct iwl_lq_sta *lq_sta = priv_sta;
u16 mask_bit = 0;
+ int count;
+ int start_rate = 0;
lq_sta->flush_timer = 0;
lq_sta->supp_rates = sta->supp_rates[sband->band];
for (i = 0; i < IWL_RATE_COUNT; i++)
rs_rate_scale_clear_window(&lq_sta->lq_info[j].win[i]);
- IWL_DEBUG_RATE("LQ: *** rate scale station global init ***\n");
+ IWL_DEBUG_RATE(priv, "LQ: *** rate scale station global init ***\n");
/* 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
lq_sta->ibss_sta_added = 0;
if (priv->iw_mode == NL80211_IFTYPE_AP) {
- u8 sta_id = iwl_find_station(priv, sta->addr);
+ u8 sta_id = priv->cfg->ops->smgmt->find_station(priv,
+ sta->addr);
/* for IBSS the call are from tasklet */
- IWL_DEBUG_RATE("LQ: ADD station %pM\n", sta->addr);
+ IWL_DEBUG_RATE(priv, "LQ: ADD station %pM\n", sta->addr);
if (sta_id == IWL_INVALID_STATION) {
- IWL_DEBUG_RATE("LQ: ADD station %pM\n", sta->addr);
- sta_id = iwl_add_station_flags(priv, sta->addr,
- 0, CMD_ASYNC, NULL);
+ IWL_DEBUG_RATE(priv, "LQ: ADD station %pM\n", sta->addr);
+ sta_id = priv->cfg->ops->smgmt->add_station(priv,
+ sta->addr, 0,
+ CMD_ASYNC, NULL);
}
if ((sta_id != IWL_INVALID_STATION)) {
lq_sta->lq.sta_id = sta_id;
}
lq_sta->is_dup = 0;
+ lq_sta->max_rate_idx = -1;
+ lq_sta->missed_rate_counter = IWL_MISSED_RATE_MAX;
lq_sta->is_green = rs_use_green(priv, conf);
lq_sta->active_legacy_rate = priv->active_rate & ~(0x1000);
lq_sta->active_rate_basic = priv->active_rate_basic;
lq_sta->active_mimo3_rate &= ~((u16)0x2);
lq_sta->active_mimo3_rate <<= IWL_FIRST_OFDM_RATE;
- IWL_DEBUG_RATE("SISO-RATE=%X MIMO2-RATE=%X MIMO3-RATE=%X\n",
+ IWL_DEBUG_RATE(priv, "SISO-RATE=%X MIMO2-RATE=%X MIMO3-RATE=%X\n",
lq_sta->active_siso_rate,
lq_sta->active_mimo2_rate,
lq_sta->active_mimo3_rate);
lq_sta->drv = priv;
/* Find highest tx rate supported by hardware and destination station */
- mask_bit = sta->supp_rates[sband->band] & lq_sta->active_legacy_rate;
- lq_sta->last_txrate_idx = 3;
- for (i = 0; i < sband->n_bitrates; i++)
+ mask_bit = sta->supp_rates[sband->band];
+ count = sband->n_bitrates;
+ if (sband->band == IEEE80211_BAND_5GHZ) {
+ count += IWL_FIRST_OFDM_RATE;
+ start_rate = IWL_FIRST_OFDM_RATE;
+ mask_bit <<= IWL_FIRST_OFDM_RATE;
+ }
+
+ mask_bit = mask_bit & lq_sta->active_legacy_rate;
+ lq_sta->last_txrate_idx = 4;
+ for (i = start_rate; i < count; i++)
if (mask_bit & BIT(i))
lq_sta->last_txrate_idx = i;
- /* For MODE_IEEE80211A, skip over cck rates in global rate table */
- if (sband->band == IEEE80211_BAND_5GHZ)
- lq_sta->last_txrate_idx += IWL_FIRST_OFDM_RATE;
-
rs_initialize_lq(priv, conf, sta, lq_sta);
}
struct iwl_lq_sta *lq_sta = priv_sta;
struct iwl_priv *priv __maybe_unused = priv_r;
- IWL_DEBUG_RATE("enter\n");
+ IWL_DEBUG_RATE(priv, "enter\n");
kfree(lq_sta);
- IWL_DEBUG_RATE("leave\n");
+ IWL_DEBUG_RATE(priv, "leave\n");
}
u32 *rate_n_flags, int index)
{
struct iwl_priv *priv;
+ u8 valid_tx_ant;
+ u8 ant_sel_tx;
priv = lq_sta->drv;
+ valid_tx_ant = priv->hw_params.valid_tx_ant;
if (lq_sta->dbg_fixed_rate) {
- if (index < 12) {
+ ant_sel_tx =
+ ((lq_sta->dbg_fixed_rate & RATE_MCS_ANT_ABC_MSK)
+ >> RATE_MCS_ANT_POS);
+ if ((valid_tx_ant & ant_sel_tx) == ant_sel_tx) {
*rate_n_flags = lq_sta->dbg_fixed_rate;
+ IWL_DEBUG_RATE(priv, "Fixed rate ON\n");
} else {
- if (lq_sta->band == IEEE80211_BAND_5GHZ)
- *rate_n_flags = 0x800D;
- else
- *rate_n_flags = 0x820A;
+ lq_sta->dbg_fixed_rate = 0;
+ IWL_ERR(priv,
+ "Invalid antenna selection 0x%X, Valid is 0x%X\n",
+ ant_sel_tx, valid_tx_ant);
+ IWL_DEBUG_RATE(priv, "Fixed rate OFF\n");
}
- IWL_DEBUG_RATE("Fixed rate ON\n");
} else {
- IWL_DEBUG_RATE("Fixed rate OFF\n");
+ IWL_DEBUG_RATE(priv, "Fixed rate OFF\n");
}
}
lq_sta->active_mimo2_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */
lq_sta->active_mimo3_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */
- IWL_DEBUG_RATE("sta_id %d rate 0x%X\n",
+ IWL_DEBUG_RATE(priv, "sta_id %d rate 0x%X\n",
lq_sta->lq.sta_id, lq_sta->dbg_fixed_rate);
if (lq_sta->dbg_fixed_rate) {
static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
char __user *user_buf, size_t count, loff_t *ppos)
{
- char buff[1024];
+ char *buff;
int desc = 0;
int i = 0;
+ int index = 0;
+ ssize_t ret;
struct iwl_lq_sta *lq_sta = file->private_data;
+ struct iwl_priv *priv;
+ struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
+
+ priv = lq_sta->drv;
+ buff = kmalloc(1024, GFP_KERNEL);
+ if (!buff)
+ return -ENOMEM;
desc += sprintf(buff+desc, "sta_id %d\n", lq_sta->lq.sta_id);
desc += sprintf(buff+desc, "failed=%d success=%d rate=0%X\n",
lq_sta->active_legacy_rate);
desc += sprintf(buff+desc, "fixed rate 0x%X\n",
lq_sta->dbg_fixed_rate);
+ desc += sprintf(buff+desc, "valid_tx_ant %s%s%s\n",
+ (priv->hw_params.valid_tx_ant & ANT_A) ? "ANT_A," : "",
+ (priv->hw_params.valid_tx_ant & ANT_B) ? "ANT_B," : "",
+ (priv->hw_params.valid_tx_ant & ANT_C) ? "ANT_C" : "");
+ desc += sprintf(buff+desc, "lq type %s\n",
+ (is_legacy(tbl->lq_type)) ? "legacy" : "HT");
+ if (is_Ht(tbl->lq_type)) {
+ desc += sprintf(buff+desc, " %s",
+ (is_siso(tbl->lq_type)) ? "SISO" :
+ ((is_mimo2(tbl->lq_type)) ? "MIMO2" : "MIMO3"));
+ desc += sprintf(buff+desc, " %s",
+ (tbl->is_fat) ? "40MHz" : "20MHz");
+ desc += sprintf(buff+desc, " %s %s\n", (tbl->is_SGI) ? "SGI" : "",
+ (lq_sta->is_green) ? "GF enabled" : "");
+ }
+ desc += sprintf(buff+desc, "last tx rate=0x%X\n",
+ lq_sta->last_rate_n_flags);
desc += sprintf(buff+desc, "general:"
"flags=0x%X mimo-d=%d s-ant0x%x d-ant=0x%x\n",
lq_sta->lq.general_params.flags,
lq_sta->lq.general_params.start_rate_index[2],
lq_sta->lq.general_params.start_rate_index[3]);
+ for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
+ index = iwl_hwrate_to_plcp_idx(
+ le32_to_cpu(lq_sta->lq.rs_table[i].rate_n_flags));
+ if (is_legacy(tbl->lq_type)) {
+ desc += sprintf(buff+desc, " rate[%d] 0x%X %smbps\n",
+ i, le32_to_cpu(lq_sta->lq.rs_table[i].rate_n_flags),
+ iwl_rate_mcs[index].mbps);
+ } else {
+ desc += sprintf(buff+desc, " rate[%d] 0x%X %smbps (%s)\n",
+ i, le32_to_cpu(lq_sta->lq.rs_table[i].rate_n_flags),
+ iwl_rate_mcs[index].mbps, iwl_rate_mcs[index].mcs);
+ }
+ }
- for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
- desc += sprintf(buff+desc, " rate[%d] 0x%X\n",
- i, le32_to_cpu(lq_sta->lq.rs_table[i].rate_n_flags));
-
- return simple_read_from_buffer(user_buf, count, ppos, buff, desc);
+ ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc);
+ kfree(buff);
+ return ret;
}
static const struct file_operations rs_sta_dbgfs_scale_table_ops = {
static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file,
char __user *user_buf, size_t count, loff_t *ppos)
{
- char buff[1024];
+ char *buff;
int desc = 0;
int i, j;
+ ssize_t ret;
struct iwl_lq_sta *lq_sta = file->private_data;
+
+ buff = kmalloc(1024, GFP_KERNEL);
+ if (!buff)
+ return -ENOMEM;
+
for (i = 0; i < LQ_SIZE; i++) {
- desc += sprintf(buff+desc, "%s type=%d SGI=%d FAT=%d DUP=%d\n"
+ desc += sprintf(buff+desc, "%s type=%d SGI=%d FAT=%d DUP=%d GF=%d\n"
"rate=0x%X\n",
lq_sta->active_tbl == i ? "*" : "x",
lq_sta->lq_info[i].lq_type,
lq_sta->lq_info[i].is_SGI,
lq_sta->lq_info[i].is_fat,
lq_sta->lq_info[i].is_dup,
+ lq_sta->is_green,
lq_sta->lq_info[i].current_rate);
for (j = 0; j < IWL_RATE_COUNT; j++) {
desc += sprintf(buff+desc,
lq_sta->lq_info[i].win[j].success_ratio);
}
}
- return simple_read_from_buffer(user_buf, count, ppos, buff, desc);
+ 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 = {
.open = open_file_generic,
};
+static ssize_t rs_sta_dbgfs_rate_scale_data_read(struct file *file,
+ char __user *user_buf, size_t count, loff_t *ppos)
+{
+ char buff[120];
+ int desc = 0;
+ ssize_t ret;
+
+ struct iwl_lq_sta *lq_sta = file->private_data;
+ struct iwl_priv *priv;
+ struct iwl_scale_tbl_info *tbl = &lq_sta->lq_info[lq_sta->active_tbl];
+
+ priv = lq_sta->drv;
+
+ if (is_Ht(tbl->lq_type))
+ desc += sprintf(buff+desc,
+ "Bit Rate= %d Mb/s\n",
+ tbl->expected_tpt[lq_sta->last_txrate_idx]);
+ else
+ desc += sprintf(buff+desc,
+ "Bit Rate= %d Mb/s\n",
+ iwl_rates[lq_sta->last_txrate_idx].ieee >> 1);
+ desc += sprintf(buff+desc,
+ "Signal Level= %d dBm\tNoise Level= %d dBm\n",
+ priv->last_rx_rssi, priv->last_rx_noise);
+ desc += sprintf(buff+desc,
+ "Tsf= 0x%llx\tBeacon time= 0x%08X\n",
+ priv->last_tsf, priv->last_beacon_time);
+
+ ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc);
+ return ret;
+}
+
+static const struct file_operations rs_sta_dbgfs_rate_scale_data_ops = {
+ .read = rs_sta_dbgfs_rate_scale_data_read,
+ .open = open_file_generic,
+};
+
static void rs_add_debugfs(void *priv, void *priv_sta,
struct dentry *dir)
{
lq_sta->rs_sta_dbgfs_stats_table_file =
debugfs_create_file("rate_stats_table", 0600, dir,
lq_sta, &rs_sta_dbgfs_stats_table_ops);
+ lq_sta->rs_sta_dbgfs_rate_scale_data_file =
+ debugfs_create_file("rate_scale_data", 0600, dir,
+ lq_sta, &rs_sta_dbgfs_rate_scale_data_ops);
lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file =
debugfs_create_u8("tx_agg_tid_enable", 0600, dir,
&lq_sta->tx_agg_tid_en);
struct iwl_lq_sta *lq_sta = priv_sta;
debugfs_remove(lq_sta->rs_sta_dbgfs_scale_table_file);
debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file);
+ debugfs_remove(lq_sta->rs_sta_dbgfs_rate_scale_data_file);
debugfs_remove(lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file);
}
#endif
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff