Commit 5aa33553 authored by Eyal Shapira's avatar Eyal Shapira Committed by Emmanuel Grumbach

iwlwifi: mvm: rs: refactor to use rs_rate

Introduce rs_rate which represents a rate. Use this structure
instead of iwl_scale_tbl_info where we're dealing with a single
rate.
This avoids allocating the big iwl_scale_tbl_info structure
on the stack in several cases like converting to ucode rate
format or from ucode rate format.
Signed-off-by: default avatarEyal Shapira <eyal@wizery.com>
Signed-off-by: default avatarEmmanuel Grumbach <emmanuel.grumbach@intel.com>
parent 0c308e97
......@@ -175,6 +175,7 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm,
struct iwl_lq_sta *lq_sta, u32 rate_n_flags);
static void rs_stay_in_table(struct iwl_lq_sta *lq_sta, bool force_search);
static const char *rs_pretty_lq_type(enum iwl_table_type type);
static const char *rs_pretty_ant(u8 ant);
#ifdef CONFIG_MAC80211_DEBUGFS
static void rs_dbgfs_set_mcs(struct iwl_lq_sta *lq_sta,
......@@ -264,6 +265,15 @@ static const struct iwl_rate_mcs_info iwl_rate_mcs[IWL_RATE_COUNT] = {
#define MCS_INDEX_PER_STREAM (8)
static inline void rs_dump_rate(struct iwl_mvm *mvm, const struct rs_rate *rate,
const char *prefix)
{
IWL_DEBUG_RATE(mvm, "%s: (%s: %d) ANT: %s BW: %d SGI: %d\n",
prefix, rs_pretty_lq_type(rate->type),
rate->index, rs_pretty_ant(rate->ant),
rate->bw, rate->sgi);
}
static void rs_rate_scale_clear_window(struct iwl_rate_scale_data *window)
{
window->data = 0;
......@@ -430,167 +440,160 @@ static int rs_collect_tx_data(struct iwl_scale_tbl_info *tbl,
return 0;
}
/*
* 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_mvm *mvm,
struct iwl_scale_tbl_info *tbl, int index)
/* Convert rs_rate object into ucode rate bitmask */
static u32 ucode_rate_from_rs_rate(struct iwl_mvm *mvm,
struct rs_rate *rate)
{
u32 rate_n_flags = 0;
u32 ucode_rate = 0;
int index = rate->index;
rate_n_flags |= ((tbl->ant_type << RATE_MCS_ANT_POS) &
ucode_rate |= ((rate->ant << RATE_MCS_ANT_POS) &
RATE_MCS_ANT_ABC_MSK);
if (is_legacy(tbl->lq_type)) {
rate_n_flags |= iwl_rates[index].plcp;
if (is_legacy(rate)) {
ucode_rate |= iwl_rates[index].plcp;
if (index >= IWL_FIRST_CCK_RATE && index <= IWL_LAST_CCK_RATE)
rate_n_flags |= RATE_MCS_CCK_MSK;
return rate_n_flags;
ucode_rate |= RATE_MCS_CCK_MSK;
return ucode_rate;
}
if (is_ht(tbl->lq_type)) {
if (is_ht(rate)) {
if (index < IWL_FIRST_HT_RATE || index > IWL_LAST_HT_RATE) {
IWL_ERR(mvm, "Invalid HT rate index %d\n", index);
index = IWL_LAST_HT_RATE;
}
rate_n_flags |= RATE_MCS_HT_MSK;
ucode_rate |= RATE_MCS_HT_MSK;
if (is_ht_siso(tbl->lq_type))
rate_n_flags |= iwl_rates[index].plcp_ht_siso;
else if (is_ht_mimo2(tbl->lq_type))
rate_n_flags |= iwl_rates[index].plcp_ht_mimo2;
if (is_ht_siso(rate))
ucode_rate |= iwl_rates[index].plcp_ht_siso;
else if (is_ht_mimo2(rate))
ucode_rate |= iwl_rates[index].plcp_ht_mimo2;
else
WARN_ON_ONCE(1);
} else if (is_vht(tbl->lq_type)) {
} else if (is_vht(rate)) {
if (index < IWL_FIRST_VHT_RATE || index > IWL_LAST_VHT_RATE) {
IWL_ERR(mvm, "Invalid VHT rate index %d\n", index);
index = IWL_LAST_VHT_RATE;
}
rate_n_flags |= RATE_MCS_VHT_MSK;
if (is_vht_siso(tbl->lq_type))
rate_n_flags |= iwl_rates[index].plcp_vht_siso;
else if (is_vht_mimo2(tbl->lq_type))
rate_n_flags |= iwl_rates[index].plcp_vht_mimo2;
ucode_rate |= RATE_MCS_VHT_MSK;
if (is_vht_siso(rate))
ucode_rate |= iwl_rates[index].plcp_vht_siso;
else if (is_vht_mimo2(rate))
ucode_rate |= iwl_rates[index].plcp_vht_mimo2;
else
WARN_ON_ONCE(1);
} else {
IWL_ERR(mvm, "Invalid tbl->lq_type %d\n", tbl->lq_type);
IWL_ERR(mvm, "Invalid rate->type %d\n", rate->type);
}
rate_n_flags |= tbl->bw;
if (tbl->is_SGI)
rate_n_flags |= RATE_MCS_SGI_MSK;
ucode_rate |= rate->bw;
if (rate->sgi)
ucode_rate |= RATE_MCS_SGI_MSK;
return rate_n_flags;
return ucode_rate;
}
/*
* Interpret uCode API's rate_n_flags format,
* fill "search" or "active" tx mode table.
*/
static int rs_get_tbl_info_from_mcs(const u32 rate_n_flags,
enum ieee80211_band band,
struct iwl_scale_tbl_info *tbl,
int *rate_idx)
/* Convert a ucode rate into an rs_rate object */
static int rs_rate_from_ucode_rate(const u32 ucode_rate,
enum ieee80211_band band,
struct rs_rate *rate)
{
u32 ant_msk = (rate_n_flags & RATE_MCS_ANT_ABC_MSK);
u8 num_of_ant = get_num_of_ant_from_rate(rate_n_flags);
u32 ant_msk = ucode_rate & RATE_MCS_ANT_ABC_MSK;
u8 num_of_ant = get_num_of_ant_from_rate(ucode_rate);
u8 nss;
memset(tbl, 0, offsetof(struct iwl_scale_tbl_info, win));
*rate_idx = iwl_hwrate_to_plcp_idx(rate_n_flags);
memset(rate, 0, sizeof(struct rs_rate));
rate->index = iwl_hwrate_to_plcp_idx(ucode_rate);
if (*rate_idx == IWL_RATE_INVALID) {
*rate_idx = -1;
if (rate->index == IWL_RATE_INVALID) {
rate->index = -1;
return -EINVAL;
}
tbl->is_SGI = 0; /* default legacy setup */
tbl->bw = 0;
tbl->ant_type = (ant_msk >> RATE_MCS_ANT_POS);
tbl->lq_type = LQ_NONE;
tbl->max_search = IWL_MAX_SEARCH;
rate->ant = (ant_msk >> RATE_MCS_ANT_POS);
/* Legacy */
if (!(rate_n_flags & RATE_MCS_HT_MSK) &&
!(rate_n_flags & RATE_MCS_VHT_MSK)) {
if (!(ucode_rate & RATE_MCS_HT_MSK) &&
!(ucode_rate & RATE_MCS_VHT_MSK)) {
if (num_of_ant == 1) {
if (band == IEEE80211_BAND_5GHZ)
tbl->lq_type = LQ_LEGACY_A;
rate->type = LQ_LEGACY_A;
else
tbl->lq_type = LQ_LEGACY_G;
rate->type = LQ_LEGACY_G;
}
return 0;
}
/* HT or VHT */
if (rate_n_flags & RATE_MCS_SGI_MSK)
tbl->is_SGI = 1;
if (ucode_rate & RATE_MCS_SGI_MSK)
rate->sgi = true;
tbl->bw = rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK;
rate->bw = ucode_rate & RATE_MCS_CHAN_WIDTH_MSK;
if (rate_n_flags & RATE_MCS_HT_MSK) {
nss = ((rate_n_flags & RATE_HT_MCS_NSS_MSK) >>
if (ucode_rate & RATE_MCS_HT_MSK) {
nss = ((ucode_rate & RATE_HT_MCS_NSS_MSK) >>
RATE_HT_MCS_NSS_POS) + 1;
if (nss == 1) {
tbl->lq_type = LQ_HT_SISO;
rate->type = LQ_HT_SISO;
WARN_ON_ONCE(num_of_ant != 1);
} else if (nss == 2) {
tbl->lq_type = LQ_HT_MIMO2;
rate->type = LQ_HT_MIMO2;
WARN_ON_ONCE(num_of_ant != 2);
} else {
WARN_ON_ONCE(1);
}
} else if (rate_n_flags & RATE_MCS_VHT_MSK) {
nss = ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
} else if (ucode_rate & RATE_MCS_VHT_MSK) {
nss = ((ucode_rate & RATE_VHT_MCS_NSS_MSK) >>
RATE_VHT_MCS_NSS_POS) + 1;
if (nss == 1) {
tbl->lq_type = LQ_VHT_SISO;
rate->type = LQ_VHT_SISO;
WARN_ON_ONCE(num_of_ant != 1);
} else if (nss == 2) {
tbl->lq_type = LQ_VHT_MIMO2;
rate->type = LQ_VHT_MIMO2;
WARN_ON_ONCE(num_of_ant != 2);
} else {
WARN_ON_ONCE(1);
}
}
WARN_ON_ONCE(tbl->bw == RATE_MCS_CHAN_WIDTH_160);
WARN_ON_ONCE(tbl->bw == RATE_MCS_CHAN_WIDTH_80 &&
!is_vht(tbl->lq_type));
WARN_ON_ONCE(rate->bw == RATE_MCS_CHAN_WIDTH_160);
WARN_ON_ONCE(rate->bw == RATE_MCS_CHAN_WIDTH_80 &&
!is_vht(rate));
return 0;
}
/* switch to another antenna/antennas and return 1 */
/* if no other valid antenna found, return 0 */
static int rs_toggle_antenna(u32 valid_ant, u32 *rate_n_flags,
struct iwl_scale_tbl_info *tbl)
static int rs_toggle_antenna(u32 valid_ant, u32 *ucode_rate,
struct rs_rate *rate)
{
u8 new_ant_type;
if (!tbl->ant_type || tbl->ant_type > ANT_ABC)
if (!rate->ant || rate->ant > ANT_ABC)
return 0;
if (!rs_is_valid_ant(valid_ant, tbl->ant_type))
if (!rs_is_valid_ant(valid_ant, rate->ant))
return 0;
new_ant_type = ant_toggle_lookup[tbl->ant_type];
new_ant_type = ant_toggle_lookup[rate->ant];
while ((new_ant_type != tbl->ant_type) &&
while ((new_ant_type != rate->ant) &&
!rs_is_valid_ant(valid_ant, new_ant_type))
new_ant_type = ant_toggle_lookup[new_ant_type];
if (new_ant_type == tbl->ant_type)
if (new_ant_type == rate->ant)
return 0;
tbl->ant_type = new_ant_type;
*rate_n_flags &= ~RATE_MCS_ANT_ABC_MSK;
*rate_n_flags |= new_ant_type << RATE_MCS_ANT_POS;
rate->ant = new_ant_type;
/* TODO: get rid of ucode_rate here. This should handle only rs_rate */
*ucode_rate &= ~RATE_MCS_ANT_ABC_MSK;
*ucode_rate |= new_ant_type << RATE_MCS_ANT_POS;
return 1;
}
......@@ -603,13 +606,13 @@ static int rs_toggle_antenna(u32 valid_ant, u32 *rate_n_flags,
*/
static u16 rs_get_supported_rates(struct iwl_lq_sta *lq_sta,
struct ieee80211_hdr *hdr,
enum iwl_table_type rate_type)
struct rs_rate *rate)
{
if (is_legacy(rate_type))
if (is_legacy(rate))
return lq_sta->active_legacy_rate;
else if (is_siso(rate_type))
else if (is_siso(rate))
return lq_sta->active_siso_rate;
else if (is_mimo2(rate_type))
else if (is_mimo2(rate))
return lq_sta->active_mimo2_rate;
WARN_ON_ONCE(1);
......@@ -624,7 +627,7 @@ static u16 rs_get_adjacent_rate(struct iwl_mvm *mvm, u8 index, u16 rate_mask,
/* 802.11A or ht walks to the next literal adjacent rate in
* the rate table */
if (is_a_band(rate_type) || !is_legacy(rate_type)) {
if (is_type_a_band(rate_type) || !is_type_legacy(rate_type)) {
int i;
u32 mask;
......@@ -673,7 +676,7 @@ static u16 rs_get_adjacent_rate(struct iwl_mvm *mvm, u8 index, u16 rate_mask,
}
static u32 rs_get_lower_rate(struct iwl_lq_sta *lq_sta,
struct iwl_scale_tbl_info *tbl,
struct rs_rate *rate,
u8 scale_index, u8 ht_possible)
{
s32 low;
......@@ -685,30 +688,29 @@ static u32 rs_get_lower_rate(struct iwl_lq_sta *lq_sta,
/* check if we need to switch from HT to legacy rates.
* assumption is that mandatory rates (1Mbps or 6Mbps)
* are always supported (spec demand) */
if (!is_legacy(tbl->lq_type) && (!ht_possible || !scale_index)) {
if (!is_legacy(rate) && (!ht_possible || !scale_index)) {
switch_to_legacy = 1;
scale_index = rs_ht_to_legacy[scale_index];
if (lq_sta->band == IEEE80211_BAND_5GHZ)
tbl->lq_type = LQ_LEGACY_A;
rate->type = LQ_LEGACY_A;
else
tbl->lq_type = LQ_LEGACY_G;
rate->type = LQ_LEGACY_G;
if (num_of_ant(tbl->ant_type) > 1)
tbl->ant_type =
if (num_of_ant(rate->ant) > 1)
rate->ant =
first_antenna(iwl_fw_valid_tx_ant(mvm->fw));
tbl->bw = 0;
tbl->is_SGI = 0;
tbl->max_search = IWL_MAX_SEARCH;
rate->bw = 0;
rate->sgi = false;
}
rate_mask = rs_get_supported_rates(lq_sta, NULL, tbl->lq_type);
rate_mask = rs_get_supported_rates(lq_sta, NULL, rate);
/* Mask with station rate restriction */
if (is_legacy(tbl->lq_type)) {
if (is_legacy(rate)) {
/* supp_rates has no CCK bits in A mode */
if (lq_sta->band == IEEE80211_BAND_5GHZ)
rate_mask = (u16)(rate_mask &
rate_mask = (u16)(rate_mask &
(lq_sta->supp_rates << IWL_FIRST_OFDM_RATE));
else
rate_mask = (u16)(rate_mask & lq_sta->supp_rates);
......@@ -721,24 +723,22 @@ static u32 rs_get_lower_rate(struct iwl_lq_sta *lq_sta,
}
high_low = rs_get_adjacent_rate(lq_sta->drv, scale_index, rate_mask,
tbl->lq_type);
rate->type);
low = high_low & 0xff;
if (low == IWL_RATE_INVALID)
low = scale_index;
out:
return rate_n_flags_from_tbl(lq_sta->drv, tbl, low);
rate->index = low;
return ucode_rate_from_rs_rate(lq_sta->drv, rate);
}
/*
* Simple function to compare two rate scale table types
*/
static bool table_type_matches(struct iwl_scale_tbl_info *a,
struct iwl_scale_tbl_info *b)
/* Simple function to compare two rate scale table types */
static inline bool rs_rate_match(struct rs_rate *a,
struct rs_rate *b)
{
return (a->lq_type == b->lq_type) && (a->ant_type == b->ant_type) &&
(a->is_SGI == b->is_SGI);
return (a->type == b->type) && (a->ant == b->ant) && (a->sgi == b->sgi);
}
static u32 rs_ch_width_from_mac_flags(enum mac80211_rate_control_flags flags)
......@@ -762,7 +762,7 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband,
{
int legacy_success;
int retries;
int rs_index, mac_index, i;
int mac_index, i;
struct iwl_lq_sta *lq_sta = priv_sta;
struct iwl_lq_cmd *table;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
......@@ -770,8 +770,8 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband,
struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
enum mac80211_rate_control_flags mac_flags;
u32 tx_rate;
struct iwl_scale_tbl_info tbl_type;
u32 ucode_rate;
struct rs_rate rate;
struct iwl_scale_tbl_info *curr_tbl, *other_tbl, *tmp_tbl;
/* Treat uninitialized rate scaling data same as non-existing. */
......@@ -801,10 +801,10 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband,
* to a new "search" mode (which might become the new "active" mode).
*/
table = &lq_sta->lq;
tx_rate = le32_to_cpu(table->rs_table[0]);
rs_get_tbl_info_from_mcs(tx_rate, info->band, &tbl_type, &rs_index);
ucode_rate = le32_to_cpu(table->rs_table[0]);
rs_rate_from_ucode_rate(ucode_rate, info->band, &rate);
if (info->band == IEEE80211_BAND_5GHZ)
rs_index -= IWL_FIRST_OFDM_RATE;
rate.index -= IWL_FIRST_OFDM_RATE;
mac_flags = info->status.rates[0].flags;
mac_index = info->status.rates[0].idx;
/* For HT packets, map MCS to PLCP */
......@@ -827,19 +827,19 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband,
/* Here we actually compare this rate to the latest LQ command */
if ((mac_index < 0) ||
(tbl_type.is_SGI != !!(mac_flags & IEEE80211_TX_RC_SHORT_GI)) ||
(tbl_type.bw != rs_ch_width_from_mac_flags(mac_flags)) ||
(tbl_type.ant_type != info->status.antenna) ||
(!!(tx_rate & RATE_MCS_HT_MSK) !=
(rate.sgi != !!(mac_flags & IEEE80211_TX_RC_SHORT_GI)) ||
(rate.bw != rs_ch_width_from_mac_flags(mac_flags)) ||
(rate.ant != info->status.antenna) ||
(!!(ucode_rate & RATE_MCS_HT_MSK) !=
!!(mac_flags & IEEE80211_TX_RC_MCS)) ||
(!!(tx_rate & RATE_MCS_VHT_MSK) !=
(!!(ucode_rate & RATE_MCS_VHT_MSK) !=
!!(mac_flags & IEEE80211_TX_RC_VHT_MCS)) ||
(!!(tx_rate & RATE_HT_MCS_GF_MSK) !=
(!!(ucode_rate & RATE_HT_MCS_GF_MSK) !=
!!(mac_flags & IEEE80211_TX_RC_GREEN_FIELD)) ||
(rs_index != mac_index)) {
(rate.index != mac_index)) {
IWL_DEBUG_RATE(mvm,
"initial rate %d does not match %d (0x%x)\n",
mac_index, rs_index, tx_rate);
mac_index, rate.index, ucode_rate);
/*
* Since rates mis-match, the last LQ command may have failed.
* After IWL_MISSED_RATE_MAX mis-matches, resync the uCode with
......@@ -857,28 +857,23 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband,
lq_sta->missed_rate_counter = 0;
/* Figure out if rate scale algorithm is in active or search table */
if (table_type_matches(&tbl_type,
&(lq_sta->lq_info[lq_sta->active_tbl]))) {
if (rs_rate_match(&rate,
&(lq_sta->lq_info[lq_sta->active_tbl].rate))) {
curr_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
other_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]);
} else if (table_type_matches(
&tbl_type, &lq_sta->lq_info[1 - lq_sta->active_tbl])) {
} else if (rs_rate_match(&rate,
&lq_sta->lq_info[1 - lq_sta->active_tbl].rate)) {
curr_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]);
other_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
} else {
IWL_DEBUG_RATE(mvm,
"Neither active nor search matches tx rate\n");
tmp_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
IWL_DEBUG_RATE(mvm, "active- lq:%x, ant:%x, SGI:%d\n",
tmp_tbl->lq_type, tmp_tbl->ant_type,
tmp_tbl->is_SGI);
rs_dump_rate(mvm, &tmp_tbl->rate, "ACTIVE");
tmp_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]);
IWL_DEBUG_RATE(mvm, "search- lq:%x, ant:%x, SGI:%d\n",
tmp_tbl->lq_type, tmp_tbl->ant_type,
tmp_tbl->is_SGI);
IWL_DEBUG_RATE(mvm, "actual- lq:%x, ant:%x, SGI:%d\n",
tbl_type.lq_type, tbl_type.ant_type,
tbl_type.is_SGI);
rs_dump_rate(mvm, &tmp_tbl->rate, "SEARCH");
rs_dump_rate(mvm, &rate, "ACTUAL");
/*
* no matching table found, let's by-pass the data collection
* and continue to perform rate scale to find the rate table
......@@ -895,10 +890,9 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband,
* first index into rate scale table.
*/
if (info->flags & IEEE80211_TX_STAT_AMPDU) {
tx_rate = le32_to_cpu(table->rs_table[0]);
rs_get_tbl_info_from_mcs(tx_rate, info->band, &tbl_type,
&rs_index);
rs_collect_tx_data(curr_tbl, rs_index,
ucode_rate = le32_to_cpu(table->rs_table[0]);
rs_rate_from_ucode_rate(ucode_rate, info->band, &rate);
rs_collect_tx_data(curr_tbl, rate.index,
info->status.ampdu_len,
info->status.ampdu_ack_len);
......@@ -920,20 +914,19 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband,
legacy_success = !!(info->flags & IEEE80211_TX_STAT_ACK);
/* Collect data for each rate used during failed TX attempts */
for (i = 0; i <= retries; ++i) {
tx_rate = le32_to_cpu(table->rs_table[i]);
rs_get_tbl_info_from_mcs(tx_rate, info->band,
&tbl_type, &rs_index);
ucode_rate = le32_to_cpu(table->rs_table[i]);
rs_rate_from_ucode_rate(ucode_rate, info->band, &rate);
/*
* Only collect stats if retried rate is in the same RS
* table as active/search.
*/
if (table_type_matches(&tbl_type, curr_tbl))
if (rs_rate_match(&rate, &curr_tbl->rate))
tmp_tbl = curr_tbl;
else if (table_type_matches(&tbl_type, other_tbl))
else if (rs_rate_match(&rate, &other_tbl->rate))
tmp_tbl = other_tbl;
else
continue;
rs_collect_tx_data(tmp_tbl, rs_index, 1,
rs_collect_tx_data(tmp_tbl, rate.index, 1,
i < retries ? 0 : legacy_success);
}
......@@ -944,7 +937,7 @@ static void rs_tx_status(void *mvm_r, struct ieee80211_supported_band *sband,
}
}
/* The last TX rate is cached in lq_sta; it's set in if/else above */
lq_sta->last_rate_n_flags = tx_rate;
lq_sta->last_rate_n_flags = ucode_rate;
done:
/* See if there's a better rate or modulation mode to try. */
if (sta && sta->supp_rates[sband->band])
......@@ -988,16 +981,17 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta,
{
/* Used to choose among HT tables */
s32 (*ht_tbl_pointer)[IWL_RATE_COUNT];
struct rs_rate *rate = &tbl->rate;
/* Check for invalid LQ type */
if (WARN_ON_ONCE(!is_legacy(tbl->lq_type) && !is_ht(tbl->lq_type) &&
!(is_vht(tbl->lq_type)))) {
if (WARN_ON_ONCE(!is_legacy(rate) && !is_ht(rate) &&
!(is_vht(rate)))) {
tbl->expected_tpt = expected_tpt_legacy;
return;
}
/* Legacy rates have only one table */
if (is_legacy(tbl->lq_type)) {
if (is_legacy(rate)) {
tbl->expected_tpt = expected_tpt_legacy;
return;
}
......@@ -1006,8 +1000,8 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta,
/* Choose among many HT tables depending on number of streams
* (SISO/MIMO2), channel width (20/40/80), SGI, and aggregation
* status */
if (is_siso(tbl->lq_type)) {
switch (tbl->bw) {
if (is_siso(rate)) {
switch (rate->bw) {
case RATE_MCS_CHAN_WIDTH_20:
ht_tbl_pointer = expected_tpt_siso_20MHz;
break;
......@@ -1020,8 +1014,8 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta,
default:
WARN_ON_ONCE(1);
}
} else if (is_mimo2(tbl->lq_type)) {
switch (tbl->bw) {
} else if (is_mimo2(rate)) {
switch (rate->bw) {
case RATE_MCS_CHAN_WIDTH_20:
ht_tbl_pointer = expected_tpt_mimo2_20MHz;
break;
......@@ -1038,11 +1032,11 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta,
WARN_ON_ONCE(1);
}
if (!tbl->is_SGI && !lq_sta->is_agg) /* Normal */
if (!rate->sgi && !lq_sta->is_agg) /* Normal */
tbl->expected_tpt = ht_tbl_pointer[0];
else if (tbl->is_SGI && !lq_sta->is_agg) /* SGI */
else if (rate->sgi && !lq_sta->is_agg) /* SGI */
tbl->expected_tpt = ht_tbl_pointer[1];
else if (!tbl->is_SGI && lq_sta->is_agg) /* AGG */
else if (!rate->sgi && lq_sta->is_agg) /* AGG */
tbl->expected_tpt = ht_tbl_pointer[2];
else /* AGG+SGI */
tbl->expected_tpt = ht_tbl_pointer[3];
......@@ -1082,7 +1076,7 @@ static s32 rs_get_best_rate(struct iwl_mvm *mvm,
while (1) {
high_low = rs_get_adjacent_rate(mvm, rate, rate_mask,
tbl->lq_type);
tbl->rate.type);
low = high_low & 0xff;
high = (high_low >> 8) & 0xff;
......@@ -1163,30 +1157,29 @@ static inline void rs_move_next_action(struct iwl_scale_tbl_info *tbl,
tbl->action = (tbl->action + 1) % (last_action + 1);
}
static void rs_set_bw_from_sta(struct iwl_scale_tbl_info *tbl,
struct ieee80211_sta *sta)
static u32 rs_bw_from_sta_bw(struct ieee80211_sta *sta)
{
if (sta->bandwidth >= IEEE80211_STA_RX_BW_80)
tbl->bw = RATE_MCS_CHAN_WIDTH_80;
return RATE_MCS_CHAN_WIDTH_80;
else if (sta->bandwidth >= IEEE80211_STA_RX_BW_40)
tbl->bw = RATE_MCS_CHAN_WIDTH_40;
else
tbl->bw = RATE_MCS_CHAN_WIDTH_20;
return RATE_MCS_CHAN_WIDTH_40;
return RATE_MCS_CHAN_WIDTH_20;
}
static bool rs_sgi_allowed(struct iwl_scale_tbl_info *tbl,
static bool rs_sgi_allowed(struct rs_rate *rate,
struct ieee80211_sta *sta)
{
struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
if (is_ht20(tbl) && (ht_cap->cap &
if (is_ht20(rate) && (ht_cap->cap &
IEEE80211_HT_CAP_SGI_20))
return true;
if (is_ht40(tbl) && (ht_cap->cap &
if (is_ht40(rate) && (ht_cap->cap &
IEEE80211_HT_CAP_SGI_40))
return true;
if (is_ht80(tbl) && (vht_cap->cap &
if (is_ht80(rate) && (vht_cap->cap &
IEEE80211_VHT_CAP_SHORT_GI_80))
return true;
......@@ -1202,7 +1195,7 @@ static int rs_switch_to_mimo2(struct iwl_mvm *mvm,
struct iwl_scale_tbl_info *tbl, int index)
{
u16 rate_mask;
s32 rate;
s32 rate_idx;
if (!sta->ht_cap.ht_supported)
return -1;
......@@ -1216,24 +1209,26 @@ static int rs_switch_to_mimo2(struct iwl_mvm *mvm,
IWL_DEBUG_RATE(mvm, "LQ: try to switch to MIMO2\n");
tbl->lq_type = lq_sta->is_vht ? LQ_VHT_MIMO2 : LQ_HT_MIMO2;
tbl->rate.type = lq_sta->is_vht ? LQ_VHT_MIMO2 : LQ_HT_MIMO2;
tbl->action = 0;
tbl->max_search = IWL_MAX_SEARCH;
rate_mask = lq_sta->active_mimo2_rate;
rs_set_bw_from_sta(tbl, sta);
tbl->rate.bw = rs_bw_from_sta_bw(sta);
rs_set_expected_tpt_table(lq_sta, tbl);
rate = rs_get_best_rate(mvm, lq_sta, tbl, rate_mask, index);
rate_idx = rs_get_best_rate(mvm, lq_sta, tbl, rate_mask, index);
IWL_DEBUG_RATE(mvm, "LQ: MIMO2 best rate %d mask %X\n",
rate, rate_mask);
if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) {
rate_idx, rate_mask);
if ((rate_idx == IWL_RATE_INVALID) || !((1 << rate_idx) & rate_mask)) {
IWL_DEBUG_RATE(mvm, "Can't switch with index %d rate mask %x\n",
rate, rate_mask);
rate_idx, rate_mask);
return -1;
}
tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, rate);
tbl->rate.index = rate_idx;
tbl->current_rate = ucode_rate_from_rs_rate(mvm, &tbl->rate);
IWL_DEBUG_RATE(mvm, "LQ: Switch to new mcs %X index\n",
tbl->current_rate);
......@@ -1249,30 +1244,34 @@ static int rs_switch_to_siso(struct iwl_mvm *mvm,
struct iwl_scale_tbl_info *tbl, int index)
{
u16 rate_mask;
s32 rate;
s32 rate_idx;
if (!sta->ht_cap.ht_supported)
return -1;
IWL_DEBUG_RATE(mvm, "LQ: try to switch to SISO\n");
tbl->lq_type = lq_sta->is_vht ? LQ_VHT_SISO : LQ_HT_SISO;
tbl->rate.type = lq_sta->is_vht ? LQ_VHT_SISO : LQ_HT_SISO;
tbl->action = 0;
tbl->max_search = IWL_MAX_SEARCH;
rate_mask = lq_sta->active_siso_rate;
rs_set_bw_from_sta(tbl, sta);
tbl->rate.bw = rs_bw_from_sta_bw(sta);
rs_set_expected_tpt_table(lq_sta, tbl);
rate = rs_get_best_rate(mvm, lq_sta, tbl, rate_mask, index);
rate_idx = rs_get_best_rate(mvm, lq_sta, tbl, rate_mask, index);
IWL_DEBUG_RATE(mvm, "LQ: get best rate %d mask %X\n", rate, rate_mask);
if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) {
IWL_DEBUG_RATE(mvm, "LQ: get best rate %d mask %X\n",
rate_idx, rate_mask);
if ((rate_idx == IWL_RATE_INVALID) || !((1 << rate_idx) & rate_mask)) {
IWL_DEBUG_RATE(mvm,
"can not switch with index %d rate mask %x\n",
rate, rate_mask);
rate_idx, rate_mask);
return -1;
}
tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, rate);
tbl->rate.index = rate_idx;
tbl->current_rate = ucode_rate_from_rs_rate(mvm, &tbl->rate);
IWL_DEBUG_RATE(mvm, "LQ: Switch to new mcs %X index\n",
tbl->current_rate);
return 0;
......@@ -1289,6 +1288,7 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm,
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 rs_rate *rate = &search_tbl->rate;
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));
......@@ -1317,7 +1317,7 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm,
if (rs_toggle_antenna(valid_tx_ant,
&search_tbl->current_rate,
search_tbl)) {
&search_tbl->rate)) {
update_search_tbl_counter = 1;
rs_set_expected_tpt_table(lq_sta, search_tbl);
goto out;
......@@ -1328,7 +1328,7 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm,
/* Set up search table to try SISO */
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = 0;
rate->sgi = false;
ret = rs_switch_to_siso(mvm, lq_sta, sta,
search_tbl, index);
if (!ret) {
......@@ -1342,12 +1342,11 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm,
/* Set up search table to try MIMO */
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = 0;
search_tbl->ant_type = ANT_AB;
rate->sgi = false;
rate->ant = ANT_AB;
if (!rs_is_valid_ant(valid_tx_ant,
search_tbl->ant_type))
rate->ant))
break;
ret = rs_switch_to_mimo2(mvm, lq_sta, sta,
......@@ -1365,7 +1364,7 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm,
if (tbl->action == start_action)
break;
}
search_tbl->lq_type = LQ_NONE;
rate->type = LQ_NONE;
return 0;
out:
......@@ -1386,6 +1385,7 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
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 rs_rate *rate = &search_tbl->rate;
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));
......@@ -1416,7 +1416,7 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
memcpy(search_tbl, tbl, sz);
if (rs_toggle_antenna(valid_tx_ant,
&search_tbl->current_rate,
search_tbl)) {
rate)) {
update_search_tbl_counter = 1;
goto out;
}
......@@ -1424,12 +1424,11 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
case IWL_SISO_SWITCH_MIMO2:
IWL_DEBUG_RATE(mvm, "LQ: SISO switch to MIMO2\n");
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = 0;
search_tbl->ant_type = ANT_AB;
rate->sgi = false;
rate->ant = ANT_AB;
if (!rs_is_valid_ant(valid_tx_ant,
search_tbl->ant_type))
rate->ant))
break;
ret = rs_switch_to_mimo2(mvm, lq_sta, sta,
......@@ -1438,21 +1437,22 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
goto out;
break;
case IWL_SISO_SWITCH_GI:
if (!rs_sgi_allowed(tbl, sta))
if (!rs_sgi_allowed(rate, sta))
break;
IWL_DEBUG_RATE(mvm, "LQ: SISO toggle SGI/NGI\n");
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = !tbl->is_SGI;
rate->sgi = !tbl->rate.sgi;
rs_set_expected_tpt_table(lq_sta, search_tbl);
if (tbl->is_SGI) {
if (tbl->rate.sgi) {
s32 tpt = lq_sta->last_tpt / 100;
if (tpt >= search_tbl->expected_tpt[index])
break;
}
rate->index = index;
search_tbl->current_rate =
rate_n_flags_from_tbl(mvm, search_tbl, index);
ucode_rate_from_rs_rate(mvm, rate);
update_search_tbl_counter = 1;
goto out;
default:
......@@ -1463,7 +1463,7 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
if (tbl->action == start_action)
break;
}
search_tbl->lq_type = LQ_NONE;
rate->type = LQ_NONE;
return 0;
out:
......@@ -1485,6 +1485,7 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
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 rs_rate *rate = &search_tbl->rate;
u32 sz = (sizeof(struct iwl_scale_tbl_info) -
(sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT));
u8 start_action;
......@@ -1509,12 +1510,12 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
memcpy(search_tbl, tbl, sz);
if (tbl->action == IWL_MIMO2_SWITCH_SISO_A)
search_tbl->ant_type = ANT_A;
rate->ant = ANT_A;
else /* tbl->action == IWL_MIMO2_SWITCH_SISO_B */
search_tbl->ant_type = ANT_B;
rate->ant = ANT_B;
if (!rs_is_valid_ant(valid_tx_ant,
search_tbl->ant_type))
rate->ant))
break;
ret = rs_switch_to_siso(mvm, lq_sta, sta,
......@@ -1525,14 +1526,14 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
break;
case IWL_MIMO2_SWITCH_GI:
if (!rs_sgi_allowed(tbl, sta))
if (!rs_sgi_allowed(rate, sta))
break;
IWL_DEBUG_RATE(mvm, "LQ: MIMO2 toggle SGI/NGI\n");
/* Set up new search table for MIMO2 */
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = !tbl->is_SGI;
rate->sgi = !tbl->rate.sgi;
rs_set_expected_tpt_table(lq_sta, search_tbl);
/*
* If active table already uses the fastest possible
......@@ -1540,13 +1541,14 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
* and it's working well, there's no need to look
* for a better type of modulation!
*/
if (tbl->is_SGI) {
if (tbl->rate.sgi) {
s32 tpt = lq_sta->last_tpt / 100;
if (tpt >= search_tbl->expected_tpt[index])
break;
}
rate->index = index;
search_tbl->current_rate =
rate_n_flags_from_tbl(mvm, search_tbl, index);
ucode_rate_from_rs_rate(mvm, rate);
update_search_tbl_counter = 1;
goto out;
default:
......@@ -1557,7 +1559,7 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
if (tbl->action == start_action)
break;
}
search_tbl->lq_type = LQ_NONE;
rate->type = LQ_NONE;
return 0;
out:
lq_sta->search_better_tbl = 1;
......@@ -1657,14 +1659,12 @@ static void rs_stay_in_table(struct iwl_lq_sta *lq_sta, bool force_search)
static void rs_update_rate_tbl(struct iwl_mvm *mvm,
struct ieee80211_sta *sta,
struct iwl_lq_sta *lq_sta,
struct iwl_scale_tbl_info *tbl,
int index)
struct rs_rate *rate)
{
u32 rate;
u32 ucode_rate;
/* Update uCode's rate table. */
rate = rate_n_flags_from_tbl(mvm, tbl, index);
rs_fill_link_cmd(mvm, sta, lq_sta, rate);
ucode_rate = ucode_rate_from_rs_rate(mvm, rate);
rs_fill_link_cmd(mvm, sta, lq_sta, ucode_rate);
iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, false);
}
......@@ -1716,6 +1716,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
u8 prev_agg = lq_sta->is_agg;
struct iwl_mvm_sta *sta_priv = (void *)sta->drv_priv;
struct iwl_mvm_tid_data *tid_data;
struct rs_rate *rate;
/* Send management frames and NO_ACK data using lowest rate. */
/* TODO: this could probably be improved.. */
......@@ -1748,6 +1749,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
active_tbl = 1 - lq_sta->active_tbl;
tbl = &(lq_sta->lq_info[active_tbl]);
rate = &tbl->rate;
if (prev_agg != lq_sta->is_agg) {
IWL_DEBUG_RATE(mvm,
......@@ -1760,10 +1762,10 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
index = lq_sta->last_txrate_idx;
/* rates available for this association, and for modulation mode */
rate_mask = rs_get_supported_rates(lq_sta, hdr, tbl->lq_type);
rate_mask = rs_get_supported_rates(lq_sta, hdr, rate);
/* mask with station rate restriction */
if (is_legacy(tbl->lq_type)) {
if (is_legacy(rate)) {
if (lq_sta->band == IEEE80211_BAND_5GHZ)
/* supp_rates has no CCK bits in A mode */
rate_scale_index_msk = (u16) (rate_mask &
......@@ -1783,12 +1785,13 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
IWL_ERR(mvm, "Current Rate is not valid\n");
if (lq_sta->search_better_tbl) {
/* revert to active table if search table is not valid*/
tbl->lq_type = LQ_NONE;
rate->type = LQ_NONE;
lq_sta->search_better_tbl = 0;
tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
/* get "active" rate info */
index = iwl_hwrate_to_plcp_idx(tbl->current_rate);
rs_update_rate_tbl(mvm, sta, lq_sta, tbl, index);
tbl->rate.index = index;
rs_update_rate_tbl(mvm, sta, lq_sta, &tbl->rate);
}
return;
}
......@@ -1825,7 +1828,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
(window->success_counter < IWL_RATE_MIN_SUCCESS_TH)) {
IWL_DEBUG_RATE(mvm,
"(%s: %d): Test Window: succ %d total %d\n",
rs_pretty_lq_type(tbl->lq_type),
rs_pretty_lq_type(rate->type),
index, window->success_counter, window->counter);
/* Can't calculate this yet; not enough history */
......@@ -1858,7 +1861,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
window->average_tpt,
lq_sta->last_tpt);
if (!is_legacy(tbl->lq_type))
if (!is_legacy(rate))
lq_sta->enable_counter = 1;
/* Swap tables; "search" becomes "active" */
......@@ -1874,7 +1877,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
lq_sta->last_tpt);
/* Nullify "search" table */
tbl->lq_type = LQ_NONE;
rate->type = LQ_NONE;
/* Revert to "active" table */
active_tbl = lq_sta->active_tbl;
......@@ -1898,7 +1901,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
/* (Else) not in search of better modulation mode, try for better
* starting rate, while staying in this mode. */
high_low = rs_get_adjacent_rate(mvm, index, rate_scale_index_msk,
tbl->lq_type);
rate->type);
low = high_low & 0xff;
high = (high_low >> 8) & 0xff;
......@@ -1918,8 +1921,8 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
IWL_DEBUG_RATE(mvm,
"(%s: %d): cur_tpt %d SR %d low %d high %d low_tpt %d high_tpt %d\n",
rs_pretty_lq_type(tbl->lq_type), index, current_tpt,
sr, low, high, low_tpt, high_tpt);
rs_pretty_lq_type(rate->type), index, current_tpt, sr,
low, high, low_tpt, high_tpt);
scale_action = 0;
......@@ -2002,7 +2005,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
}
/* Force a search in case BT doesn't like us being in MIMO */
if (is_mimo(tbl->lq_type) &&
if (is_mimo(rate) &&
!iwl_mvm_bt_coex_is_mimo_allowed(mvm, sta)) {
IWL_DEBUG_RATE(mvm,
"BT Coex forbids MIMO. Search for new config\n");
......@@ -2041,8 +2044,10 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
lq_update:
/* Replace uCode's rate table for the destination station. */
if (update_lq)
rs_update_rate_tbl(mvm, sta, lq_sta, tbl, index);
if (update_lq) {
tbl->rate.index = index;
rs_update_rate_tbl(mvm, sta, lq_sta, &tbl->rate);
}
rs_stay_in_table(lq_sta, false);
......@@ -2063,11 +2068,11 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
window->counter);
/* Select a new "search" modulation mode to try.
* If one is found, set up the new "search" table. */
if (is_legacy(tbl->lq_type))
if (is_legacy(&tbl->rate))
rs_move_legacy_other(mvm, lq_sta, sta, index);
else if (is_siso(tbl->lq_type))
else if (is_siso(&tbl->rate))
rs_move_siso_to_other(mvm, lq_sta, sta, index);
else if (is_mimo2(tbl->lq_type))
else if (is_mimo2(&tbl->rate))
rs_move_mimo2_to_other(mvm, lq_sta, sta, index);
else
WARN_ON_ONCE(1);
......@@ -2086,7 +2091,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
"Switch to SEARCH TABLE: "
"mcs %X (%s: %d)\n",
tbl->current_rate,
rs_pretty_lq_type(tbl->lq_type),
rs_pretty_lq_type(tbl->rate.type),
index);
rs_fill_link_cmd(mvm, sta, lq_sta, tbl->current_rate);
iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, false);
......@@ -2102,7 +2107,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
* 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) && !sta->ht_cap.ht_supported &&
if (is_legacy(&tbl1->rate) && !sta->ht_cap.ht_supported &&
lq_sta->action_counter > tbl1->max_search) {
IWL_DEBUG_RATE(mvm, "LQ: STAY in legacy table\n");
rs_set_stay_in_table(mvm, 1, lq_sta);
......@@ -2130,7 +2135,8 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
}
out:
tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, index);
tbl->rate.index = index;
tbl->current_rate = ucode_rate_from_rs_rate(mvm, &tbl->rate);
lq_sta->last_txrate_idx = index;
}
......@@ -2155,9 +2161,9 @@ static void rs_initialize_lq(struct iwl_mvm *mvm,
bool init)
{
struct iwl_scale_tbl_info *tbl;
int rate_idx;
struct rs_rate *rate;
int i;
u32 rate;
u32 ucode_rate;
u8 active_tbl = 0;
u8 valid_tx_ant;
......@@ -2174,25 +2180,26 @@ static void rs_initialize_lq(struct iwl_mvm *mvm,
active_tbl = 1 - lq_sta->active_tbl;
tbl = &(lq_sta->lq_info[active_tbl]);
rate = &tbl->rate;
if ((i < 0) || (i >= IWL_RATE_COUNT))
i = 0;
rate = iwl_rates[i].plcp;
tbl->ant_type = first_antenna(valid_tx_ant);
rate |= tbl->ant_type << RATE_MCS_ANT_POS;
ucode_rate = iwl_rates[i].plcp;
rate->ant = first_antenna(valid_tx_ant);
ucode_rate |= rate->ant << RATE_MCS_ANT_POS;
if (i >= IWL_FIRST_CCK_RATE && i <= IWL_LAST_CCK_RATE)
rate |= RATE_MCS_CCK_MSK;
ucode_rate |= RATE_MCS_CCK_MSK;
rs_get_tbl_info_from_mcs(rate, band, tbl, &rate_idx);
if (!rs_is_valid_ant(valid_tx_ant, tbl->ant_type))
rs_toggle_antenna(valid_tx_ant, &rate, tbl);
rs_rate_from_ucode_rate(ucode_rate, band, rate);
if (!rs_is_valid_ant(valid_tx_ant, rate->ant))
rs_toggle_antenna(valid_tx_ant, &ucode_rate, rate);
rate = rate_n_flags_from_tbl(mvm, tbl, rate_idx);
tbl->current_rate = rate;
ucode_rate = ucode_rate_from_rs_rate(mvm, rate);
tbl->current_rate = ucode_rate;
rs_set_expected_tpt_table(lq_sta, tbl);
rs_fill_link_cmd(NULL, NULL, lq_sta, rate);
rs_fill_link_cmd(NULL, NULL, lq_sta, ucode_rate);
/* TODO restore station should remember the lq cmd */
iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, init);
}
......@@ -2435,9 +2442,8 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm,
struct ieee80211_sta *sta,
struct iwl_lq_sta *lq_sta, u32 new_rate)
{
struct iwl_scale_tbl_info tbl_type;
struct rs_rate rate;
int index = 0;
int rate_idx;
int repeat_rate = 0;
u8 ant_toggle_cnt = 0;
u8 use_ht_possible = 1;
......@@ -2447,12 +2453,10 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm,
/* Override starting rate (index 0) if needed for debug purposes */
rs_dbgfs_set_mcs(lq_sta, &new_rate);
/* Interpret new_rate (rate_n_flags) */
rs_get_tbl_info_from_mcs(new_rate, lq_sta->band,
&tbl_type, &rate_idx);
rs_rate_from_ucode_rate(new_rate, lq_sta->band, &rate);
/* How many times should we repeat the initial rate? */
if (is_legacy(tbl_type.lq_type)) {
if (is_legacy(&rate)) {
ant_toggle_cnt = 1;
repeat_rate = IWL_NUMBER_TRY;
} else {
......@@ -2460,15 +2464,15 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm,
LINK_QUAL_AGG_DISABLE_START_DEF - 1);
}
lq_cmd->mimo_delim = is_mimo(tbl_type.lq_type) ? 1 : 0;
lq_cmd->mimo_delim = is_mimo(&rate) ? 1 : 0;
/* Fill 1st table entry (index 0) */
lq_cmd->rs_table[index] = cpu_to_le32(new_rate);
if (num_of_ant(tbl_type.ant_type) == 1)
lq_cmd->single_stream_ant_msk = tbl_type.ant_type;
else if (num_of_ant(tbl_type.ant_type) == 2)
lq_cmd->dual_stream_ant_msk = tbl_type.ant_type;
if (num_of_ant(rate.ant) == 1)
lq_cmd->single_stream_ant_msk = rate.ant;
else if (num_of_ant(rate.ant) == 2)
lq_cmd->dual_stream_ant_msk = rate.ant;
/* otherwise we don't modify the existing value */
index++;
......@@ -2482,12 +2486,12 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm,
* For legacy IWL_NUMBER_TRY == 1, this loop will not execute.
* For HT IWL_HT_NUMBER_TRY == 3, this executes twice. */
while (repeat_rate > 0 && (index < LINK_QUAL_MAX_RETRY_NUM)) {
if (is_legacy(tbl_type.lq_type)) {
if (is_legacy(&rate)) {
if (ant_toggle_cnt < NUM_TRY_BEFORE_ANT_TOGGLE)
ant_toggle_cnt++;
else if (mvm &&
rs_toggle_antenna(valid_tx_ant,
&new_rate, &tbl_type))
&new_rate, &rate))
ant_toggle_cnt = 1;
}
......@@ -2501,26 +2505,25 @@ static void rs_fill_link_cmd(struct iwl_mvm *mvm,
index++;
}
rs_get_tbl_info_from_mcs(new_rate, lq_sta->band, &tbl_type,
&rate_idx);
rs_rate_from_ucode_rate(new_rate, lq_sta->band, &rate);
/* Indicate to uCode which entries might be MIMO.
* If initial rate was MIMO, this will finally end up
* as (IWL_HT_NUMBER_TRY * 2), after 2nd pass, otherwise 0. */
if (is_mimo(tbl_type.lq_type))
if (is_mimo(&rate))
lq_cmd->mimo_delim = index;
/* Get next rate */
new_rate = rs_get_lower_rate(lq_sta, &tbl_type, rate_idx,
new_rate = rs_get_lower_rate(lq_sta, &rate, rate.index,
use_ht_possible);
/* How many times should we repeat the next rate? */
if (is_legacy(tbl_type.lq_type)) {
if (is_legacy(&rate)) {
if (ant_toggle_cnt < NUM_TRY_BEFORE_ANT_TOGGLE)
ant_toggle_cnt++;
else if (mvm &&
rs_toggle_antenna(valid_tx_ant,
&new_rate, &tbl_type))
&new_rate, &rate))
ant_toggle_cnt = 1;
repeat_rate = IWL_NUMBER_TRY;
......@@ -2629,7 +2632,7 @@ static ssize_t rs_sta_dbgfs_scale_table_write(struct file *file,
static const char *rs_pretty_lq_type(enum iwl_table_type type)
{
static const char * const lq_type[] = {
static const char * const lq_types[] = {
[LQ_NONE] = "NONE",
[LQ_LEGACY_A] = "LEGACY_A",
[LQ_LEGACY_G] = "LEGACY_G",
......@@ -2642,10 +2645,10 @@ static const char *rs_pretty_lq_type(enum iwl_table_type type)
if (type < LQ_NONE || type >= LQ_MAX)
return "UNKNOWN";
return lq_type[type];
return lq_types[type];
}
static int rs_pretty_print_rate(char *buf, const u32 rate)
static const char *rs_pretty_ant(u8 ant)
{
static const char * const ant_name[] = {
[ANT_NONE] = "None",
......@@ -2658,6 +2661,15 @@ static int rs_pretty_print_rate(char *buf, const u32 rate)
[ANT_ABC] = "ABC",
};
if (ant > ANT_ABC)
return "UNKNOWN";
return ant_name[ant];
}
static int rs_pretty_print_rate(char *buf, const u32 rate)
{
char *type, *bw;
u8 mcs = 0, nss = 0;
u8 ant = (rate & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS;
......@@ -2667,7 +2679,7 @@ static int rs_pretty_print_rate(char *buf, const u32 rate)
int index = iwl_hwrate_to_plcp_idx(rate);
return sprintf(buf, "Legacy | ANT: %s Rate: %s Mbps\n",
ant_name[ant], iwl_rate_mcs[index].mbps);
rs_pretty_ant(ant), iwl_rate_mcs[index].mbps);
}
if (rate & RATE_MCS_VHT_MSK) {
......@@ -2700,7 +2712,7 @@ static int rs_pretty_print_rate(char *buf, const u32 rate)
}
return sprintf(buf, "%s | ANT: %s BW: %s MCS: %d NSS: %d %s%s%s%s%s\n",
type, ant_name[ant], bw, mcs, nss,
type, rs_pretty_ant(ant), bw, mcs, nss,
(rate & RATE_MCS_SGI_MSK) ? "SGI " : "NGI ",
(rate & RATE_MCS_STBC_MSK) ? "STBC " : "",
(rate & RATE_MCS_LDPC_MSK) ? "LDPC " : "",
......@@ -2719,7 +2731,7 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
struct iwl_lq_sta *lq_sta = file->private_data;
struct iwl_mvm *mvm;
struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
struct rs_rate *rate = &tbl->rate;
mvm = lq_sta->drv;
buff = kmalloc(2048, GFP_KERNEL);
if (!buff)
......@@ -2736,17 +2748,17 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
(iwl_fw_valid_tx_ant(mvm->fw) & ANT_B) ? "ANT_B," : "",
(iwl_fw_valid_tx_ant(mvm->fw) & ANT_C) ? "ANT_C" : "");
desc += sprintf(buff+desc, "lq type %s\n",
(is_legacy(tbl->lq_type)) ? "legacy" :
is_vht(tbl->lq_type) ? "VHT" : "HT");
if (!is_legacy(tbl->lq_type)) {
(is_legacy(rate)) ? "legacy" :
is_vht(rate) ? "VHT" : "HT");
if (!is_legacy(rate)) {
desc += sprintf(buff+desc, " %s",
(is_siso(tbl->lq_type)) ? "SISO" : "MIMO2");
(is_siso(rate)) ? "SISO" : "MIMO2");
desc += sprintf(buff+desc, " %s",
(is_ht20(tbl)) ? "20MHz" :
(is_ht40(tbl)) ? "40MHz" :
(is_ht80(tbl)) ? "80Mhz" : "BAD BW");
(is_ht20(rate)) ? "20MHz" :
(is_ht40(rate)) ? "40MHz" :
(is_ht80(rate)) ? "80Mhz" : "BAD BW");
desc += sprintf(buff+desc, " %s %s\n",
(tbl->is_SGI) ? "SGI" : "NGI",
(rate->sgi) ? "SGI" : "NGI",
(lq_sta->is_agg) ? "AGG on" : "");
}
desc += sprintf(buff+desc, "last tx rate=0x%X\n",
......@@ -2799,6 +2811,7 @@ static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file,
int i, j;
ssize_t ret;
struct iwl_scale_tbl_info *tbl;
struct rs_rate *rate;
struct iwl_lq_sta *lq_sta = file->private_data;
buff = kmalloc(1024, GFP_KERNEL);
......@@ -2807,15 +2820,16 @@ static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file,
for (i = 0; i < LQ_SIZE; i++) {
tbl = &(lq_sta->lq_info[i]);
rate = &tbl->rate;
desc += sprintf(buff+desc,
"%s type=%d SGI=%d BW=%s DUP=0\n"
"rate=0x%X\n",
lq_sta->active_tbl == i ? "*" : "x",
tbl->lq_type,
tbl->is_SGI,
is_ht20(tbl) ? "20Mhz" :
is_ht40(tbl) ? "40Mhz" :
is_ht80(tbl) ? "80Mhz" : "ERR",
rate->type,
rate->sgi,
is_ht20(rate) ? "20Mhz" :
is_ht40(rate) ? "40Mhz" :
is_ht80(rate) ? "80Mhz" : "ERR",
tbl->current_rate);
for (j = 0; j < IWL_RATE_COUNT; j++) {
desc += sprintf(buff+desc,
......
......@@ -224,22 +224,45 @@ enum iwl_table_type {
LQ_MAX,
};
#define is_legacy(tbl) (((tbl) == LQ_LEGACY_G) || ((tbl) == LQ_LEGACY_A))
#define is_ht_siso(tbl) ((tbl) == LQ_HT_SISO)
#define is_ht_mimo2(tbl) ((tbl) == LQ_HT_MIMO2)
#define is_vht_siso(tbl) ((tbl) == LQ_VHT_SISO)
#define is_vht_mimo2(tbl) ((tbl) == LQ_VHT_MIMO2)
#define is_siso(tbl) (is_ht_siso(tbl) || is_vht_siso(tbl))
#define is_mimo2(tbl) (is_ht_mimo2(tbl) || is_vht_mimo2(tbl))
#define is_mimo(tbl) (is_mimo2(tbl))
#define is_ht(tbl) (is_ht_siso(tbl) || is_ht_mimo2(tbl))
#define is_vht(tbl) (is_vht_siso(tbl) || is_vht_mimo2(tbl))
#define is_a_band(tbl) ((tbl) == LQ_LEGACY_A)
#define is_g_band(tbl) ((tbl) == LQ_LEGACY_G)
#define is_ht20(tbl) (tbl->bw == RATE_MCS_CHAN_WIDTH_20)
#define is_ht40(tbl) (tbl->bw == RATE_MCS_CHAN_WIDTH_40)
#define is_ht80(tbl) (tbl->bw == RATE_MCS_CHAN_WIDTH_80)
struct rs_rate {
int index;
enum iwl_table_type type;
u8 ant;
u32 bw;
bool sgi;
};
#define is_type_legacy(type) (((type) == LQ_LEGACY_G) || \
((type) == LQ_LEGACY_A))
#define is_type_ht_siso(type) ((type) == LQ_HT_SISO)
#define is_type_ht_mimo2(type) ((type) == LQ_HT_MIMO2)
#define is_type_vht_siso(type) ((type) == LQ_VHT_SISO)
#define is_type_vht_mimo2(type) ((type) == LQ_VHT_MIMO2)
#define is_type_siso(type) (is_type_ht_siso(type) || is_type_vht_siso(type))
#define is_type_mimo2(type) (is_type_ht_mimo2(type) || is_type_vht_mimo2(type))
#define is_type_mimo(type) (is_type_mimo2(type))
#define is_type_ht(type) (is_type_ht_siso(type) || is_type_ht_mimo2(type))
#define is_type_vht(type) (is_type_vht_siso(type) || is_type_vht_mimo2(type))
#define is_type_a_band(type) ((type) == LQ_LEGACY_A)
#define is_type_g_band(type) ((type) == LQ_LEGACY_G)
#define is_legacy(rate) is_type_legacy((rate)->type)
#define is_ht_siso(rate) is_type_ht_siso((rate)->type)
#define is_ht_mimo2(rate) is_type_ht_mimo2((rate)->type)
#define is_vht_siso(rate) is_type_vht_siso((rate)->type)
#define is_vht_mimo2(rate) is_type_vht_mimo2((rate)->type)
#define is_siso(rate) is_type_siso((rate)->type)
#define is_mimo2(rate) is_type_mimo2((rate)->type)
#define is_mimo(rate) is_type_mimo((rate)->type)
#define is_ht(rate) is_type_ht((rate)->type)
#define is_vht(rate) is_type_vht((rate)->type)
#define is_a_band(rate) is_type_a_band((rate)->type)
#define is_g_band(rate) is_type_g_band((rate)->type)
#define is_ht20(rate) ((rate)->bw == RATE_MCS_CHAN_WIDTH_20)
#define is_ht40(rate) ((rate)->bw == RATE_MCS_CHAN_WIDTH_40)
#define is_ht80(rate) ((rate)->bw == RATE_MCS_CHAN_WIDTH_80)
#define IWL_MAX_MCS_DISPLAY_SIZE 12
......@@ -266,10 +289,7 @@ struct iwl_rate_scale_data {
* one for "active", and one for "search".
*/
struct iwl_scale_tbl_info {
enum iwl_table_type lq_type;
u8 ant_type;
u8 is_SGI; /* 1 = short guard interval */
u32 bw; /* channel bandwidth; RATE_MCS_CHAN_WIDTH_XX */
struct rs_rate rate;
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. */
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment