* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#include "core.h"
+#include "ath9k.h"
static struct ath_rate_table ar5416_11na_ratetable = {
42,
- {0},
{
{ VALID, VALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
5400, 0x0b, 0x00, 12,
0, 2, 1, 0, 0, 0, 0, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
+ { VALID, VALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
7800, 0x0f, 0x00, 18,
0, 3, 1, 1, 1, 1, 1, 0 },
{ VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
static struct ath_rate_table ar5416_11ng_ratetable = {
46,
- {0},
{
{ VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */
900, 0x1b, 0x00, 2,
static struct ath_rate_table ar5416_11a_ratetable = {
8,
- {0},
{
{ VALID, VALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
5400, 0x0b, 0x00, (0x80|12),
static struct ath_rate_table ar5416_11g_ratetable = {
12,
- {0},
{
{ VALID, VALID, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */
900, 0x1b, 0x00, 2,
static struct ath_rate_table ar5416_11b_ratetable = {
4,
- {0},
{
{ VALID, VALID, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */
900, 0x1b, 0x00, (0x80|2),
static int ath_rc_valid_phyrate(u32 phy, u32 capflag, int ignore_cw)
{
- if (WLAN_RC_PHY_HT(phy) & !(capflag & WLAN_RC_HT_FLAG))
+ if (WLAN_RC_PHY_HT(phy) && !(capflag & WLAN_RC_HT_FLAG))
return 0;
if (WLAN_RC_PHY_DS(phy) && !(capflag & WLAN_RC_DS_FLAG))
return 0;
static u8 ath_rc_ratefind_ht(struct ath_softc *sc,
struct ath_rate_priv *ath_rc_priv,
struct ath_rate_table *rate_table,
- int probe_allowed, int *is_probing,
- int is_retry)
+ int *is_probing)
{
u32 dt, best_thruput, this_thruput, now_msec;
u8 rate, next_rate, best_rate, maxindex, minindex;
}
rate = best_rate;
-
- /* if we are retrying for more than half the number
- * of max retries, use the min rate for the next retry
- */
- if (is_retry)
- rate = ath_rc_priv->valid_rate_index[minindex];
-
ath_rc_priv->rssi_last_lookup = rssi_last;
/*
* non-monoticity of 11g's rate table
*/
- if (rate >= ath_rc_priv->rate_max_phy && probe_allowed) {
+ if (rate >= ath_rc_priv->rate_max_phy) {
rate = ath_rc_priv->rate_max_phy;
/* Probe the next allowed phy state */
- /* FIXME:XXXX Check to make sure ratMax is checked properly */
if (ath_rc_get_nextvalid_txrate(rate_table,
- ath_rc_priv, rate, &next_rate) &&
+ ath_rc_priv, rate, &next_rate) &&
(now_msec - ath_rc_priv->probe_time >
rate_table->probe_interval) &&
(ath_rc_priv->hw_maxretry_pktcnt >= 1)) {
return rate;
}
-static void ath_rc_rate_set_series(struct ath_rate_table *rate_table ,
+static void ath_rc_rate_set_series(struct ath_rate_table *rate_table,
struct ieee80211_tx_rate *rate,
+ struct ieee80211_tx_rate_control *txrc,
u8 tries, u8 rix, int rtsctsenable)
{
rate->count = tries;
rate->idx = rix;
- if (rtsctsenable)
+ if (txrc->short_preamble)
+ rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
+ if (txrc->rts || rtsctsenable)
rate->flags |= IEEE80211_TX_RC_USE_RTS_CTS;
if (WLAN_RC_PHY_40(rate_table->info[rix].phy))
rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
rate->flags |= IEEE80211_TX_RC_MCS;
}
+static void ath_rc_rate_set_rtscts(struct ath_softc *sc,
+ struct ath_rate_table *rate_table,
+ struct ieee80211_tx_info *tx_info)
+{
+ struct ieee80211_tx_rate *rates = tx_info->control.rates;
+ int i = 0, rix = 0, cix, enable_g_protection = 0;
+
+ /* get the cix for the lowest valid rix */
+ for (i = 3; i >= 0; i--) {
+ if (rates[i].count && (rates[i].idx >= 0)) {
+ rix = rates[i].idx;
+ break;
+ }
+ }
+ cix = rate_table->info[rix].ctrl_rate;
+
+ /* All protection frames are transmited at 2Mb/s for 802.11g,
+ * otherwise we transmit them at 1Mb/s */
+ if (sc->hw->conf.channel->band == IEEE80211_BAND_2GHZ &&
+ !conf_is_ht(&sc->hw->conf))
+ enable_g_protection = 1;
+
+ /*
+ * If 802.11g protection is enabled, determine whether to use RTS/CTS or
+ * just CTS. Note that this is only done for OFDM/HT unicast frames.
+ */
+ if ((sc->sc_flags & SC_OP_PROTECT_ENABLE) &&
+ !(tx_info->flags & IEEE80211_TX_CTL_NO_ACK) &&
+ (rate_table->info[rix].phy == WLAN_RC_PHY_OFDM ||
+ WLAN_RC_PHY_HT(rate_table->info[rix].phy))) {
+ rates[0].flags |= IEEE80211_TX_RC_USE_CTS_PROTECT;
+ cix = rate_table->info[enable_g_protection].ctrl_rate;
+ }
+
+ tx_info->control.rts_cts_rate_idx = cix;
+}
+
static u8 ath_rc_rate_getidx(struct ath_softc *sc,
struct ath_rate_priv *ath_rc_priv,
struct ath_rate_table *rate_table,
static void ath_rc_ratefind(struct ath_softc *sc,
struct ath_rate_priv *ath_rc_priv,
- int num_tries, int num_rates,
- struct ieee80211_tx_info *tx_info, int *is_probe,
- int is_retry)
+ struct ieee80211_tx_rate_control *txrc)
{
- u8 try_per_rate = 0, i = 0, rix, nrix;
struct ath_rate_table *rate_table;
+ struct sk_buff *skb = txrc->skb;
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_rate *rates = tx_info->control.rates;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ __le16 fc = hdr->frame_control;
+ u8 try_per_rate = 0, i = 0, rix, nrix;
+ int is_probe = 0;
rate_table = sc->cur_rate_table;
- rix = ath_rc_ratefind_ht(sc, ath_rc_priv, rate_table, 1,
- is_probe, is_retry);
+ rix = ath_rc_ratefind_ht(sc, ath_rc_priv, rate_table, &is_probe);
nrix = rix;
- if (*is_probe) {
+ if (is_probe) {
/* set one try for probe rates. For the
* probes don't enable rts */
- ath_rc_rate_set_series(rate_table,
- &rates[i++], 1, nrix, 0);
+ ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
+ 1, nrix, 0);
- try_per_rate = (num_tries/num_rates);
+ try_per_rate = (ATH_11N_TXMAXTRY/4);
/* Get the next tried/allowed rate. No RTS for the next series
* after the probe rate
*/
- nrix = ath_rc_rate_getidx(sc,
- ath_rc_priv, rate_table, nrix, 1, 0);
- ath_rc_rate_set_series(rate_table,
- &rates[i++], try_per_rate, nrix, 0);
+ nrix = ath_rc_rate_getidx(sc, ath_rc_priv,
+ rate_table, nrix, 1, 0);
+ ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
+ try_per_rate, nrix, 0);
} else {
- try_per_rate = (num_tries/num_rates);
+ try_per_rate = (ATH_11N_TXMAXTRY/4);
/* Set the choosen rate. No RTS for first series entry. */
- ath_rc_rate_set_series(rate_table,
- &rates[i++], try_per_rate, nrix, 0);
+ ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
+ try_per_rate, nrix, 0);
}
/* Fill in the other rates for multirate retry */
- for ( ; i < num_rates; i++) {
+ for ( ; i < 4; i++) {
u8 try_num;
u8 min_rate;
- try_num = ((i + 1) == num_rates) ?
- num_tries - (try_per_rate * i) : try_per_rate ;
- min_rate = (((i + 1) == num_rates) && 0);
+ try_num = ((i + 1) == 4) ?
+ ATH_11N_TXMAXTRY - (try_per_rate * i) : try_per_rate ;
+ min_rate = (((i + 1) == 4) && 0);
nrix = ath_rc_rate_getidx(sc, ath_rc_priv,
rate_table, nrix, 1, min_rate);
/* All other rates in the series have RTS enabled */
- ath_rc_rate_set_series(rate_table,
- &rates[i], try_num, nrix, 1);
+ ath_rc_rate_set_series(rate_table, &rates[i], txrc,
+ try_num, nrix, 1);
}
/*
* above conditions.
*/
if ((sc->hw->conf.channel->band == IEEE80211_BAND_2GHZ) &&
- (sc->hw->conf.ht.enabled)) {
+ (conf_is_ht(&sc->hw->conf))) {
u8 dot11rate = rate_table->info[rix].dot11rate;
u8 phy = rate_table->info[rix].phy;
if (i == 4 &&
rates[3].flags = rates[2].flags;
}
}
+
+ /*
+ * Force hardware to use computed duration for next
+ * fragment by disabling multi-rate retry, which
+ * updates duration based on the multi-rate duration table.
+ *
+ * FIXME: Fix duration
+ */
+ if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK) &&
+ (ieee80211_has_morefrags(fc) ||
+ (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG))) {
+ rates[1].count = rates[2].count = rates[3].count = 0;
+ rates[1].idx = rates[2].idx = rates[3].idx = 0;
+ rates[0].count = ATH_TXMAXTRY;
+ }
+
+ /* Setup RTS/CTS */
+ ath_rc_rate_set_rtscts(sc, rate_table, tx_info);
}
static bool ath_rc_update_per(struct ath_softc *sc,
ath_rc_priv->per_down_time = now_msec;
}
+ ath_debug_stat_retries(sc, tx_rate, xretries, retries);
+
#undef CHK_RSSI
}
struct ath_rateset *rateset = &ath_rc_priv->neg_rates;
u8 *ht_mcs = (u8 *)&ath_rc_priv->neg_ht_rates;
u8 i, j, k, hi = 0, hthi = 0;
+ struct ath_hw *ah = sc->sc_ah;
/* FIXME: Adhoc */
- if ((sc->sc_ah->ah_opmode == NL80211_IFTYPE_STATION) ||
- (sc->sc_ah->ah_opmode == NL80211_IFTYPE_ADHOC)) {
+ if ((sc->sc_ah->opmode == NL80211_IFTYPE_STATION) ||
+ (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)) {
bool is_cw_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
rate_table = ath_choose_rate_table(sc, sband->band,
sta->ht_cap.ht_supported,
is_cw_40);
- } else if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_AP) {
+ } else if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
/* cur_rate_table would be set on init through config() */
rate_table = sc->cur_rate_table;
}
}
if (sta->ht_cap.ht_supported) {
- ath_rc_priv->ht_cap = (WLAN_RC_HT_FLAG | WLAN_RC_DS_FLAG);
+ ath_rc_priv->ht_cap = WLAN_RC_HT_FLAG;
+ if (sc->sc_ah->caps.tx_chainmask != 1 &&
+ ath9k_hw_getcapability(ah, ATH9K_CAP_DS, 0, NULL))
+ ath_rc_priv->ht_cap |= WLAN_RC_DS_FLAG;
if (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
ath_rc_priv->ht_cap |= WLAN_RC_40_FLAG;
+ if (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40)
+ ath_rc_priv->ht_cap |= WLAN_RC_SGI_FLAG;
}
/* Initial rate table size. Will change depending
if (!rateset->rs_nrates) {
/* No working rate, just initialize valid rates */
hi = ath_rc_init_validrates(ath_rc_priv, rate_table,
- ath_rc_priv->ht_cap);
+ ath_rc_priv->ht_cap);
} else {
/* Use intersection of working rates and valid rates */
hi = ath_rc_setvalid_rates(ath_rc_priv, rate_table,
- rateset, ath_rc_priv->ht_cap);
+ rateset, ath_rc_priv->ht_cap);
if (ath_rc_priv->ht_cap & WLAN_RC_HT_FLAG) {
hthi = ath_rc_setvalid_htrates(ath_rc_priv,
- rate_table,
- ht_mcs,
- ath_rc_priv->ht_cap);
+ rate_table,
+ ht_mcs,
+ ath_rc_priv->ht_cap);
}
hi = A_MAX(hi, hthi);
}
*/
if (tx_info_priv->tx.ts_flags &
(ATH9K_TX_DATA_UNDERRUN | ATH9K_TX_DELIM_UNDERRUN) &&
- ((sc->sc_ah->ah_txTrigLevel) >= ath_rc_priv->tx_triglevel_max)) {
+ ((sc->sc_ah->tx_trig_level) >= ath_rc_priv->tx_triglevel_max)) {
tx_status = 1;
is_underrun = 1;
}
(is_underrun) ? ATH_11N_TXMAXTRY :
tx_info_priv->tx.ts_longretry);
+ /* Check if aggregation has to be enabled for this tid */
+ if (conf_is_ht(&sc->hw->conf) &&
+ !(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
+ if (ieee80211_is_data_qos(fc)) {
+ u8 *qc, tid;
+ struct ath_node *an;
+
+ qc = ieee80211_get_qos_ctl(hdr);
+ tid = qc[0] & 0xf;
+ an = (struct ath_node *)sta->drv_priv;
+
+ if(ath_tx_aggr_check(sc, an, tid))
+ ieee80211_start_tx_ba_session(sc->hw, hdr->addr1, tid);
+ }
+ }
+
+ ath_debug_stat_rc(sc, skb);
exit:
kfree(tx_info_priv);
}
struct ieee80211_supported_band *sband = txrc->sband;
struct sk_buff *skb = txrc->skb;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ath_softc *sc = priv;
- struct ieee80211_hw *hw = sc->hw;
struct ath_rate_priv *ath_rc_priv = priv_sta;
- struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
- int is_probe = 0;
__le16 fc = hdr->frame_control;
/* lowest rate for management and multicast/broadcast frames */
}
/* Find tx rate for unicast frames */
- ath_rc_ratefind(sc, ath_rc_priv, ATH_11N_TXMAXTRY, 4,
- tx_info, &is_probe, false);
-
- /* Check if aggregation has to be enabled for this tid */
- if (hw->conf.ht.enabled) {
- if (ieee80211_is_data_qos(fc)) {
- u8 *qc, tid;
- struct ath_node *an;
-
- qc = ieee80211_get_qos_ctl(hdr);
- tid = qc[0] & 0xf;
- an = (struct ath_node *)sta->drv_priv;
-
- if(ath_tx_aggr_check(sc, an, tid))
- ieee80211_start_tx_ba_session(hw, hdr->addr1, tid);
- }
- }
+ ath_rc_ratefind(sc, ath_rc_priv, txrc);
}
static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband,
}
rate_priv->rssi_down_time = jiffies_to_msecs(jiffies);
- rate_priv->tx_triglevel_max = sc->sc_ah->ah_caps.tx_triglevel_max;
+ rate_priv->tx_triglevel_max = sc->sc_ah->caps.tx_triglevel_max;
return rate_priv;
}
{
int i;
- for (i = 0; i < 256; i++)
- rate_table->rateCodeToIndex[i] = (u8)-1;
-
for (i = 0; i < rate_table->rate_cnt; i++) {
- u8 code = rate_table->info[i].ratecode;
u8 cix = rate_table->info[i].ctrl_rate;
- u8 sh = rate_table->info[i].short_preamble;
-
- rate_table->rateCodeToIndex[code] = i;
- rate_table->rateCodeToIndex[code | sh] = i;
rate_table->info[i].lpAckDuration =
ath9k_hw_computetxtime(sc->sc_ah, rate_table,
projects / linux-2.6-omap-h63xx.git / blobdiff