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path: root/drivers/net/wireless/rt2x00/rt2x00ht.c
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* rt2x00: Merge rt2x00ht.c contents in other files.Gertjan van Wingerde2011-04-191-137/+0
| | | | | | | | | | | | | | | The two functions that are in rt2x00ht.c can be much better placed closer to the places where the call-sites of these functions are (one in rt2x00config.c and one in rt2x00queue.c) allowing us to make these functions static. Also, conditional compilations doesn't seem to be necessary anymore as 802.11n support is quite common nowadays. This makes the code a bit easier readable and searchable. Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Use TXOP_HTTXOP for beaconsHelmut Schaa2011-04-191-2/+3
| | | | | | | | | Use TXOP_HTTXOP for beacons to stay in sync with the legacy drivers. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Fix STBC transmissions to STAs with Rx STBC > 1Helmut Schaa2011-04-041-2/+5
| | | | | | | | | | | | | | | | | | | | | For STBC transmissions rt2x00 used the number of RxSTBC streams the destination STA indicates in its HT capabilities as STBC value in the TXWI. However, the legacy drivers and our own comment in rt2800.h suggest that the STBC field in the TXWI only allows a value of 0 or 1. The values 2 and 3 are reserved (probably for future devices). And indeed, STBC transmissions to STAs indicating more then 1 RxSTBC stream fail when the STBC field is set to something >1. Fix this by only setting the STBC field to 1 when STBC should be used. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Don't call ieee80211_get_tx_rate for MCS ratesHelmut Schaa2011-03-041-8/+0
| | | | | | | | | | | | | ieee80211_get_tx_rate is not valid for HT rates. Hence, restructure the TX desciptor creation to be aware of MCS rates. The generic TX desciptor creation now cares about the rate_mode (CCK, OFDM, MCS, GF). As a result, ieee80211_get_tx_rate gets only called for legacy rates. Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> 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>
* rt2x00: Optimize TX descriptor handlingHelmut Schaa2011-03-041-10/+10
| | | | | | | | | | | | | | | HT and no-HT rt2x00 devices use a partly different TX descriptor. Optimize the tx desciptor memory layout by putting the PLCP and HT substructs into a union and introduce a new driver flag to decide which TX desciptor format is used by the device. This saves us the expensive PLCP calculation fOr HT devices and the HT descriptor setup on no-HT devices. Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> 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>
* rt2x00: Remove superfluos empty lineHelmut Schaa2011-02-211-1/+0
| | | | | | | Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Remove superfluous assignment of mpdu_densityHelmut Schaa2011-01-041-2/+0
| | | | | | | | | The tx desciptor already gets initialized to 0. Hence, there's no need to explicitly assign 0 to mpdu_density here. 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>
* rt2x00: Improve cooperation between rt2800pci and minstrelHelmut Schaa2010-10-051-2/+4
| | | | | | | | | | | In order to lower the impact of probe rates don't send a frame as AMPDU if the rate control algorithm sets IEEE80211_TX_CTL_RATE_CTRL_PROBE. Otherwise a whole aggregate would be send with a probe rate which might lead to numerous retries. 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>
* rt2x00: Allow tx duplication for legacy rates in HT40 modeHelmut Schaa2010-10-051-1/+7
| | | | | | | | | | | 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>
* rt2x00: Fix SM PS checkHelmut Schaa2010-10-051-3/+4
| | | | | | | | | | | | Fix a check for dynamic SM PS mode in the STAs HT caps. Since a value of 3 means "SM PS disabled" the previous check assumed in that case that "dynamic SM PS" was enabled and as such prefixed every MCS>7 frame with a unnecessary RTS/CTS exchange. Also, the bit shift was done in the wrong direction. 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>
* rt2x00: Set MIMO PS flag in tx descriptor for STAs in dynamic SMPS modeIvo van Doorn2010-08-161-0/+10
| | | | | | 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>
* rt2x00: fix use of mcs ratesHelmut Schaa2010-06-031-3/+12
| | | | | | | | | | | | In case of mcs rates txrate->idx contains the mcs index to be used for transmission. Previously the mcs values dedicated for legacy rates where used for mcs transmissions which resulted in the use of mcs 0 in a number of cases (e.g. for all mcs rates >= 15 as rt2x00 does not register legacy rates with indexes >= 15). Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
* rt2x00: Use IEEE80211_TX_CTL_STBC flagIvo van Doorn2010-06-031-1/+3
| | | | | | | | Use the IEEE80211_TX_CTL_STBC flag to determine the correct value to be used for the STBC field in the TX descriptor Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
* rt2x00: Fix HT40 operation in rt2800.Gertjan van Wingerde2010-06-031-0/+28
| | | | | | | | | | | | Closer inspection of the legacy Ralink driver reveals that in case of HT40+ or HT40- we must adjust the frequency settings that we program to the device. Implement the same adjustment in the rt2x00 code. With this HT40 seems to work for all devices supported by rt2800pci and rt2800usb. Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
* rt2x00: rt2800: use correct txop value in tx descriptorHelmut Schaa2010-05-071-0/+17
| | | | | | | | | | | | | | | | rt2800 devices use a different enumeration to specify what IFS values should be used on frame transmission compared to the other rt2x00 devices. Hence, create a new enum called txop that contains the valid values. Furthermore use the appropriate txop values as found in the ralink drivers: - TXOP_BACKOFF for management frames - TXOP_SIFS for subsequent fragments in a burst - TXOP_HTTXOP for all data frames Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Update copyright statements.Gertjan van Wingerde2009-11-111-1/+1
| | | | | | | | | | | | | | | | As mentioned on the linux-wireless mailing list, the current copyright statements in the rt2x00 are meaningless, as the rt2x00 project is not even a formal legal entity. Therefore it is better to replace the existing copyright statements with copyright statements for the people that actually wrote the code. Note: Updated to the best of my knowledge with respect to who contributed considerable amounts of code. Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> CC: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Implement support for 802.11nIvo van Doorn2009-05-061-0/+69
Extend rt2x00lib capabilities to support 802.11n, it still lacks aggregation support, but that can be added in the future. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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