| Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 1 | /* |
| Gertjan van Wingerde | 9c9a0d1 | 2009-11-08 16:39:55 +0100 | [diff] [blame] | 2 | Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> |
| Ivo van Doorn | 35f00cf | 2009-04-26 16:09:32 +0200 | [diff] [blame] | 3 | <http://rt2x00.serialmonkey.com> |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 2 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the |
| 17 | Free Software Foundation, Inc., |
| 18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | Module: rt2x00lib |
| 23 | Abstract: rt2x00 HT specific routines. |
| 24 | */ |
| 25 | |
| 26 | #include <linux/kernel.h> |
| 27 | #include <linux/module.h> |
| 28 | |
| 29 | #include "rt2x00.h" |
| 30 | #include "rt2x00lib.h" |
| 31 | |
| 32 | void rt2x00ht_create_tx_descriptor(struct queue_entry *entry, |
| 33 | struct txentry_desc *txdesc, |
| 34 | const struct rt2x00_rate *hwrate) |
| 35 | { |
| 36 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); |
| 37 | struct ieee80211_tx_rate *txrate = &tx_info->control.rates[0]; |
| 38 | |
| 39 | if (tx_info->control.sta) |
| 40 | txdesc->mpdu_density = |
| 41 | tx_info->control.sta->ht_cap.ampdu_density; |
| 42 | else |
| 43 | txdesc->mpdu_density = 0; |
| 44 | |
| 45 | txdesc->ba_size = 7; /* FIXME: What value is needed? */ |
| 46 | txdesc->stbc = 0; /* FIXME: What value is needed? */ |
| 47 | |
| 48 | txdesc->mcs = rt2x00_get_rate_mcs(hwrate->mcs); |
| 49 | if (txrate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) |
| 50 | txdesc->mcs |= 0x08; |
| 51 | |
| 52 | /* |
| 53 | * Convert flags |
| 54 | */ |
| 55 | if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) |
| 56 | __set_bit(ENTRY_TXD_HT_AMPDU, &txdesc->flags); |
| 57 | |
| 58 | /* |
| 59 | * Determine HT Mix/Greenfield rate mode |
| 60 | */ |
| 61 | if (txrate->flags & IEEE80211_TX_RC_MCS) |
| 62 | txdesc->rate_mode = RATE_MODE_HT_MIX; |
| 63 | if (txrate->flags & IEEE80211_TX_RC_GREEN_FIELD) |
| 64 | txdesc->rate_mode = RATE_MODE_HT_GREENFIELD; |
| 65 | if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) |
| 66 | __set_bit(ENTRY_TXD_HT_BW_40, &txdesc->flags); |
| 67 | if (txrate->flags & IEEE80211_TX_RC_SHORT_GI) |
| 68 | __set_bit(ENTRY_TXD_HT_SHORT_GI, &txdesc->flags); |
| 69 | } |