diff options
| author | Helmut Schaa <helmut.schaa@googlemail.com> | 2010-10-02 09:29:59 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-10-05 17:35:27 (GMT) |
| commit | cb753b7253548b950e84843a00b4db8d0c54f578 (patch) | |
| tree | fcd8cf0add4fcb78d01cb4104975e53044b711bd /drivers | |
| parent | 95192339c2de1e1a61baf289af3e3332403371c9 (diff) | |
| download | linux-cb753b7253548b950e84843a00b4db8d0c54f578.tar.xz | |
rt2x00: Allow tx duplication for legacy rates in HT40 mode
Make use of the IEEE80211_TX_RC_DUP_DATA flag to duplicate a
transmission with legacy rates to both 20Mhz channels if set.
Also update the related comment in rt2800.h to describe the
behavior of the BW_40 flag for legacy rates.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800.h | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00ht.c | 8 |
2 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800.h b/drivers/net/wireless/rt2x00/rt2800.h index e1583cf..9bf50a1 100644 --- a/drivers/net/wireless/rt2x00/rt2800.h +++ b/drivers/net/wireless/rt2x00/rt2800.h @@ -1982,7 +1982,8 @@ struct mac_iveiv_entry { * FRAG: 1 To inform TKIP engine this is a fragment. * MIMO_PS: The remote peer is in dynamic MIMO-PS mode * TX_OP: 0:HT TXOP rule , 1:PIFS TX ,2:Backoff, 3:sifs - * BW: Channel bandwidth 20MHz or 40 MHz + * BW: Channel bandwidth 0:20MHz, 1:40 MHz (for legacy rates this will + * duplicate the frame to both channels). * STBC: 1: STBC support MCS =0-7, 2,3 : RESERVED * AMPDU: 1: this frame is eligible for AMPDU aggregation, the hw will * aggregate consecutive frames with the same RA and QoS TID. diff --git a/drivers/net/wireless/rt2x00/rt2x00ht.c b/drivers/net/wireless/rt2x00/rt2x00ht.c index 48b6ed4..2023419 100644 --- a/drivers/net/wireless/rt2x00/rt2x00ht.c +++ b/drivers/net/wireless/rt2x00/rt2x00ht.c @@ -85,7 +85,13 @@ void rt2x00ht_create_tx_descriptor(struct queue_entry *entry, txdesc->rate_mode = RATE_MODE_HT_MIX; if (txrate->flags & IEEE80211_TX_RC_GREEN_FIELD) txdesc->rate_mode = RATE_MODE_HT_GREENFIELD; - if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) + + /* + * Set 40Mhz mode if necessary (for legacy rates this will + * duplicate the frame to both channels). + */ + if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH || + txrate->flags & IEEE80211_TX_RC_DUP_DATA) __set_bit(ENTRY_TXD_HT_BW_40, &txdesc->flags); if (txrate->flags & IEEE80211_TX_RC_SHORT_GI) __set_bit(ENTRY_TXD_HT_SHORT_GI, &txdesc->flags); |