diff options
Diffstat (limited to 'net/mac80211/tx.c')
| -rw-r--r-- | net/mac80211/tx.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 532cf5127b7..36761c7139b 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -173,7 +173,7 @@ static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr, * to closest integer */ dur = ieee80211_frame_duration(local, 10, rate, erp, - local->short_preamble); + tx->sdata->short_preamble); if (next_frag_len) { /* Frame is fragmented: duration increases with time needed to @@ -182,7 +182,7 @@ static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr, /* next fragment */ dur += ieee80211_frame_duration(local, next_frag_len, txrate->rate, erp, - local->short_preamble); + tx->sdata->short_preamble); } return dur; @@ -627,12 +627,6 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_txrx_data *tx) tx->u.tx.control->rate = tx->u.tx.rate; } tx->u.tx.control->tx_rate = tx->u.tx.rate->val; - if ((tx->u.tx.rate->flags & IEEE80211_RATE_PREAMBLE2) && - tx->local->short_preamble && - (!tx->sta || (tx->sta->flags & WLAN_STA_SHORT_PREAMBLE))) { - tx->u.tx.short_preamble = 1; - tx->u.tx.control->tx_rate = tx->u.tx.rate->val2; - } return TXRX_CONTINUE; } @@ -641,6 +635,7 @@ static ieee80211_txrx_result ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data; + u16 fc = le16_to_cpu(hdr->frame_control); u16 dur; struct ieee80211_tx_control *control = tx->u.tx.control; struct ieee80211_hw_mode *mode = tx->u.tx.mode; @@ -677,6 +672,16 @@ ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx) !(control->flags & IEEE80211_TXCTL_USE_RTS_CTS)) control->flags |= IEEE80211_TXCTL_USE_CTS_PROTECT; + /* Transmit data frames using short preambles if the driver supports + * short preambles at the selected rate and short preambles are + * available on the network at the current point in time. */ + if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) && + (tx->u.tx.rate->flags & IEEE80211_RATE_PREAMBLE2) && + tx->sdata->short_preamble && + (!tx->sta || (tx->sta->flags & WLAN_STA_SHORT_PREAMBLE))) { + tx->u.tx.control->tx_rate = tx->u.tx.rate->val2; + } + /* Setup duration field for the first fragment of the frame. Duration * for remaining fragments will be updated when they are being sent * to low-level driver in ieee80211_tx(). */ @@ -1750,7 +1755,7 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, int if_id, return NULL; } - control->tx_rate = (local->short_preamble && + control->tx_rate = (sdata->short_preamble && (rate->flags & IEEE80211_RATE_PREAMBLE2)) ? rate->val2 : rate->val; control->antenna_sel_tx = local->hw.conf.antenna_sel_tx; @@ -1765,7 +1770,7 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, int if_id, } EXPORT_SYMBOL(ieee80211_beacon_get); -void ieee80211_rts_get(struct ieee80211_hw *hw, +void ieee80211_rts_get(struct ieee80211_hw *hw, int if_id, const void *frame, size_t frame_len, const struct ieee80211_tx_control *frame_txctl, struct ieee80211_rts *rts) @@ -1775,13 +1780,13 @@ void ieee80211_rts_get(struct ieee80211_hw *hw, fctl = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS; rts->frame_control = cpu_to_le16(fctl); - rts->duration = ieee80211_rts_duration(hw, frame_len, frame_txctl); + rts->duration = ieee80211_rts_duration(hw, if_id, frame_len, frame_txctl); memcpy(rts->ra, hdr->addr1, sizeof(rts->ra)); memcpy(rts->ta, hdr->addr2, sizeof(rts->ta)); } EXPORT_SYMBOL(ieee80211_rts_get); -void ieee80211_ctstoself_get(struct ieee80211_hw *hw, +void ieee80211_ctstoself_get(struct ieee80211_hw *hw, int if_id, const void *frame, size_t frame_len, const struct ieee80211_tx_control *frame_txctl, struct ieee80211_cts *cts) @@ -1791,7 +1796,7 @@ void ieee80211_ctstoself_get(struct ieee80211_hw *hw, fctl = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS; cts->frame_control = cpu_to_le16(fctl); - cts->duration = ieee80211_ctstoself_duration(hw, frame_len, frame_txctl); + cts->duration = ieee80211_ctstoself_duration(hw, if_id, frame_len, frame_txctl); memcpy(cts->ra, hdr->addr1, sizeof(cts->ra)); } EXPORT_SYMBOL(ieee80211_ctstoself_get); |