@@ -405,9 +405,9 @@ static int ath_rc_get_rateindex(const struct ath_rate_table *rate_table,
return rix;
}
-static void ath_rc_sort_validrates(const struct ath_rate_table *rate_table,
- struct ath_rate_priv *ath_rc_priv)
+static void ath_rc_sort_validrates(struct ath_rate_priv *ath_rc_priv)
{
+ const struct ath_rate_table *rate_table = ath_rc_priv->rate_table;
u8 i, j, idx, idx_next;
for (i = ath_rc_priv->max_valid_rate - 1; i > 0; i--) {
@@ -424,14 +424,6 @@ static void ath_rc_sort_validrates(const struct ath_rate_table *rate_table,
}
}
-static void ath_rc_init_valid_rate_idx(struct ath_rate_priv *ath_rc_priv)
-{
- u8 i;
-
- for (i = 0; i < ath_rc_priv->rate_table_size; i++)
- ath_rc_priv->valid_rate_index[i] = 0;
-}
-
static inline void ath_rc_set_valid_rate_idx(struct ath_rate_priv *ath_rc_priv,
u8 index, int valid_tx_rate)
{
@@ -495,10 +487,9 @@ ath_rc_get_lower_rix(const struct ath_rate_table *rate_table,
return 0;
}
-static u8 ath_rc_init_validrates(struct ath_rate_priv *ath_rc_priv,
- const struct ath_rate_table *rate_table,
- u32 capflag)
+static u8 ath_rc_init_validrates(struct ath_rate_priv *ath_rc_priv)
{
+ const struct ath_rate_table *rate_table = ath_rc_priv->rate_table;
u8 i, hi = 0;
for (i = 0; i < rate_table->rate_cnt; i++) {
@@ -506,7 +497,7 @@ static u8 ath_rc_init_validrates(struct ath_rate_priv *ath_rc_priv,
u32 phy = rate_table->info[i].phy;
u8 valid_rate_count = 0;
- if (!ath_rc_valid_phyrate(phy, capflag, 0))
+ if (!ath_rc_valid_phyrate(phy, ath_rc_priv->ht_cap, 0))
continue;
valid_rate_count = ath_rc_priv->valid_phy_ratecnt[phy];
@@ -521,14 +512,13 @@ static u8 ath_rc_init_validrates(struct ath_rate_priv *ath_rc_priv,
return hi;
}
-static u8 ath_rc_setvalid_rates(struct ath_rate_priv *ath_rc_priv,
- const struct ath_rate_table *rate_table,
- struct ath_rateset *rateset,
- u32 capflag)
+static u8 ath_rc_setvalid_rates(struct ath_rate_priv *ath_rc_priv)
{
+ const struct ath_rate_table *rate_table = ath_rc_priv->rate_table;
+ struct ath_rateset *rateset = &ath_rc_priv->neg_rates;
+ u32 capflag = ath_rc_priv->ht_cap;
u8 i, j, hi = 0;
- /* Use intersection of working rates and valid rates */
for (i = 0; i < rateset->rs_nrates; i++) {
for (j = 0; j < rate_table->rate_cnt; j++) {
u32 phy = rate_table->info[j].phy;
@@ -565,13 +555,13 @@ static u8 ath_rc_setvalid_rates(struct ath_rate_priv *ath_rc_priv,
return hi;
}
-static u8 ath_rc_setvalid_htrates(struct ath_rate_priv *ath_rc_priv,
- const struct ath_rate_table *rate_table,
- struct ath_rateset *rateset, u32 capflag)
+static u8 ath_rc_setvalid_htrates(struct ath_rate_priv *ath_rc_priv)
{
+ const struct ath_rate_table *rate_table = ath_rc_priv->rate_table;
+ struct ath_rateset *rateset = &ath_rc_priv->neg_ht_rates;
+ u32 capflag = ath_rc_priv->ht_cap;
u8 i, j, hi = 0;
- /* Use intersection of working rates and valid rates */
for (i = 0; i < rateset->rs_nrates; i++) {
for (j = 0; j < rate_table->rate_cnt; j++) {
u32 phy = rate_table->info[j].phy;
@@ -1200,28 +1190,20 @@ struct ath_rate_table *ath_choose_rate_table(struct ath_softc *sc,
}
static void ath_rc_init(struct ath_softc *sc,
- struct ath_rate_priv *ath_rc_priv,
- struct ieee80211_supported_band *sband,
- struct ieee80211_sta *sta,
- const struct ath_rate_table *rate_table)
+ struct ath_rate_priv *ath_rc_priv)
{
+ const struct ath_rate_table *rate_table = ath_rc_priv->rate_table;
struct ath_rateset *rateset = &ath_rc_priv->neg_rates;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
- struct ath_rateset *ht_mcs = &ath_rc_priv->neg_ht_rates;
u8 i, j, k, hi = 0, hthi = 0;
- /* Initial rate table size. Will change depending
- * on the working rate set */
ath_rc_priv->rate_table_size = RATE_TABLE_SIZE;
- /* Initialize thresholds according to the global rate table */
for (i = 0 ; i < ath_rc_priv->rate_table_size; i++) {
ath_rc_priv->per[i] = 0;
+ ath_rc_priv->valid_rate_index[i] = 0;
}
- /* Determine the valid rates */
- ath_rc_init_valid_rate_idx(ath_rc_priv);
-
for (i = 0; i < WLAN_RC_PHY_MAX; i++) {
for (j = 0; j < RATE_TABLE_SIZE; j++)
ath_rc_priv->valid_phy_rateidx[i][j] = 0;
@@ -1229,25 +1211,19 @@ static void ath_rc_init(struct ath_softc *sc,
}
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);
+ hi = ath_rc_init_validrates(ath_rc_priv);
} 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);
- 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);
- }
+ hi = ath_rc_setvalid_rates(ath_rc_priv);
+
+ if (ath_rc_priv->ht_cap & WLAN_RC_HT_FLAG)
+ hthi = ath_rc_setvalid_htrates(ath_rc_priv);
+
hi = max(hi, hthi);
}
ath_rc_priv->rate_table_size = hi + 1;
ath_rc_priv->rate_max_phy = 0;
- BUG_ON(ath_rc_priv->rate_table_size > RATE_TABLE_SIZE);
+ WARN_ON(ath_rc_priv->rate_table_size > RATE_TABLE_SIZE);
for (i = 0, k = 0; i < WLAN_RC_PHY_MAX; i++) {
for (j = 0; j < ath_rc_priv->valid_phy_ratecnt[i]; j++) {
@@ -1255,21 +1231,20 @@ static void ath_rc_init(struct ath_softc *sc,
ath_rc_priv->valid_phy_rateidx[i][j];
}
- if (!ath_rc_valid_phyrate(i, rate_table->initial_ratemax, 1)
- || !ath_rc_priv->valid_phy_ratecnt[i])
+ if (!ath_rc_valid_phyrate(i, rate_table->initial_ratemax, 1) ||
+ !ath_rc_priv->valid_phy_ratecnt[i])
continue;
ath_rc_priv->rate_max_phy = ath_rc_priv->valid_phy_rateidx[i][j-1];
}
- BUG_ON(ath_rc_priv->rate_table_size > RATE_TABLE_SIZE);
- BUG_ON(k > RATE_TABLE_SIZE);
+ WARN_ON(ath_rc_priv->rate_table_size > RATE_TABLE_SIZE);
+ WARN_ON(k > RATE_TABLE_SIZE);
ath_rc_priv->max_valid_rate = k;
- ath_rc_sort_validrates(rate_table, ath_rc_priv);
+ ath_rc_sort_validrates(ath_rc_priv);
ath_rc_priv->rate_max_phy = (k > 4) ?
- ath_rc_priv->valid_rate_index[k-4] :
- ath_rc_priv->valid_rate_index[k-1];
- ath_rc_priv->rate_table = rate_table;
+ ath_rc_priv->valid_rate_index[k-4] :
+ ath_rc_priv->valid_rate_index[k-1];
ath_dbg(common, CONFIG, "RC Initialized with capabilities: 0x%x\n",
ath_rc_priv->ht_cap);
@@ -1392,7 +1367,6 @@ static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband,
struct ath_softc *sc = priv;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_rate_priv *ath_rc_priv = priv_sta;
- const struct ath_rate_table *rate_table;
int i, j = 0;
for (i = 0; i < sband->n_bitrates; i++) {
@@ -1414,15 +1388,15 @@ static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband,
ath_rc_priv->neg_ht_rates.rs_nrates = j;
}
- rate_table = ath_choose_rate_table(sc, sband->band,
- sta->ht_cap.ht_supported);
- if (!rate_table) {
+ ath_rc_priv->rate_table = ath_choose_rate_table(sc, sband->band,
+ sta->ht_cap.ht_supported);
+ if (!ath_rc_priv->rate_table) {
ath_err(common, "No rate table chosen\n");
return;
}
ath_rc_priv->ht_cap = ath_rc_build_ht_caps(sc, sta);
- ath_rc_init(sc, priv_sta, sband, sta, rate_table);
+ ath_rc_init(sc, priv_sta);
}
static void ath_rate_update(void *priv, struct ieee80211_supported_band *sband,
@@ -1431,13 +1405,10 @@ static void ath_rate_update(void *priv, struct ieee80211_supported_band *sband,
{
struct ath_softc *sc = priv;
struct ath_rate_priv *ath_rc_priv = priv_sta;
- const struct ath_rate_table *rate_table = NULL;
if (changed & IEEE80211_RC_BW_CHANGED) {
- rate_table = ath_choose_rate_table(sc, sband->band,
- sta->ht_cap.ht_supported);
ath_rc_priv->ht_cap = ath_rc_build_ht_caps(sc, sta);
- ath_rc_init(sc, priv_sta, sband, sta, rate_table);
+ ath_rc_init(sc, priv_sta);
ath_dbg(ath9k_hw_common(sc->sc_ah), CONFIG,
"Operating HT Bandwidth changed to: %d\n",
A reference to the rate table is stored inside the private structure, so there is no need to pass "rate_table" around. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> --- drivers/net/wireless/ath/ath9k/rc.c | 99 +++++++++++++------------------------ 1 file changed, 35 insertions(+), 64 deletions(-)