4b7679a561
Long awaited, hard work. This patch totally cleans up the rate control API to remove the requirement to include internal headers outside of net/mac80211/. There's one internal use in the PID algorithm left for mesh networking, we'll have to figure out a way to clean that one up and decide how to do the peer link evaluation, possibly independent of the rate control algorithm or via new API. Additionally, ath9k is left using the cross-inclusion hack for now, we will add new API where necessary to make this work properly, but right now I'm not expert enough to do it. It's still off better than before. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
207 lines
6.1 KiB
C
207 lines
6.1 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2005 - 2008 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* James P. Ketrenos <ipw2100-admin@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#ifndef __iwl_3945_rs_h__
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#define __iwl_3945_rs_h__
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struct iwl3945_rate_info {
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u8 plcp; /* uCode API: IWL_RATE_6M_PLCP, etc. */
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u8 ieee; /* MAC header: IWL_RATE_6M_IEEE, etc. */
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u8 prev_ieee; /* previous rate in IEEE speeds */
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u8 next_ieee; /* next rate in IEEE speeds */
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u8 prev_rs; /* previous rate used in rs algo */
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u8 next_rs; /* next rate used in rs algo */
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u8 prev_rs_tgg; /* previous rate used in TGG rs algo */
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u8 next_rs_tgg; /* next rate used in TGG rs algo */
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u8 table_rs_index; /* index in rate scale table cmd */
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u8 prev_table_rs; /* prev in rate table cmd */
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};
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/*
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* These serve as indexes into
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* struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT];
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*/
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enum {
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IWL_RATE_1M_INDEX = 0,
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IWL_RATE_2M_INDEX,
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IWL_RATE_5M_INDEX,
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IWL_RATE_11M_INDEX,
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IWL_RATE_6M_INDEX,
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IWL_RATE_9M_INDEX,
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IWL_RATE_12M_INDEX,
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IWL_RATE_18M_INDEX,
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IWL_RATE_24M_INDEX,
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IWL_RATE_36M_INDEX,
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IWL_RATE_48M_INDEX,
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IWL_RATE_54M_INDEX,
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IWL_RATE_COUNT,
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IWL_RATE_INVM_INDEX,
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IWL_RATE_INVALID = IWL_RATE_INVM_INDEX
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};
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enum {
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IWL_RATE_6M_INDEX_TABLE = 0,
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IWL_RATE_9M_INDEX_TABLE,
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IWL_RATE_12M_INDEX_TABLE,
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IWL_RATE_18M_INDEX_TABLE,
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IWL_RATE_24M_INDEX_TABLE,
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IWL_RATE_36M_INDEX_TABLE,
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IWL_RATE_48M_INDEX_TABLE,
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IWL_RATE_54M_INDEX_TABLE,
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IWL_RATE_1M_INDEX_TABLE,
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IWL_RATE_2M_INDEX_TABLE,
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IWL_RATE_5M_INDEX_TABLE,
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IWL_RATE_11M_INDEX_TABLE,
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IWL_RATE_INVM_INDEX_TABLE = IWL_RATE_INVM_INDEX,
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};
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enum {
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IWL_FIRST_OFDM_RATE = IWL_RATE_6M_INDEX,
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IWL_LAST_OFDM_RATE = IWL_RATE_54M_INDEX,
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IWL_FIRST_CCK_RATE = IWL_RATE_1M_INDEX,
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IWL_LAST_CCK_RATE = IWL_RATE_11M_INDEX,
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};
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/* #define vs. enum to keep from defaulting to 'large integer' */
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#define IWL_RATE_6M_MASK (1 << IWL_RATE_6M_INDEX)
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#define IWL_RATE_9M_MASK (1 << IWL_RATE_9M_INDEX)
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#define IWL_RATE_12M_MASK (1 << IWL_RATE_12M_INDEX)
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#define IWL_RATE_18M_MASK (1 << IWL_RATE_18M_INDEX)
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#define IWL_RATE_24M_MASK (1 << IWL_RATE_24M_INDEX)
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#define IWL_RATE_36M_MASK (1 << IWL_RATE_36M_INDEX)
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#define IWL_RATE_48M_MASK (1 << IWL_RATE_48M_INDEX)
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#define IWL_RATE_54M_MASK (1 << IWL_RATE_54M_INDEX)
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#define IWL_RATE_1M_MASK (1 << IWL_RATE_1M_INDEX)
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#define IWL_RATE_2M_MASK (1 << IWL_RATE_2M_INDEX)
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#define IWL_RATE_5M_MASK (1 << IWL_RATE_5M_INDEX)
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#define IWL_RATE_11M_MASK (1 << IWL_RATE_11M_INDEX)
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/* 3945 uCode API values for (legacy) bit rates, both OFDM and CCK */
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enum {
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IWL_RATE_6M_PLCP = 13,
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IWL_RATE_9M_PLCP = 15,
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IWL_RATE_12M_PLCP = 5,
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IWL_RATE_18M_PLCP = 7,
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IWL_RATE_24M_PLCP = 9,
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IWL_RATE_36M_PLCP = 11,
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IWL_RATE_48M_PLCP = 1,
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IWL_RATE_54M_PLCP = 3,
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IWL_RATE_1M_PLCP = 10,
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IWL_RATE_2M_PLCP = 20,
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IWL_RATE_5M_PLCP = 55,
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IWL_RATE_11M_PLCP = 110,
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};
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/* MAC header values for bit rates */
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enum {
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IWL_RATE_6M_IEEE = 12,
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IWL_RATE_9M_IEEE = 18,
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IWL_RATE_12M_IEEE = 24,
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IWL_RATE_18M_IEEE = 36,
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IWL_RATE_24M_IEEE = 48,
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IWL_RATE_36M_IEEE = 72,
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IWL_RATE_48M_IEEE = 96,
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IWL_RATE_54M_IEEE = 108,
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IWL_RATE_1M_IEEE = 2,
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IWL_RATE_2M_IEEE = 4,
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IWL_RATE_5M_IEEE = 11,
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IWL_RATE_11M_IEEE = 22,
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};
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#define IWL_CCK_BASIC_RATES_MASK \
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(IWL_RATE_1M_MASK | \
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IWL_RATE_2M_MASK)
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#define IWL_CCK_RATES_MASK \
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(IWL_BASIC_RATES_MASK | \
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IWL_RATE_5M_MASK | \
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IWL_RATE_11M_MASK)
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#define IWL_OFDM_BASIC_RATES_MASK \
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(IWL_RATE_6M_MASK | \
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IWL_RATE_12M_MASK | \
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IWL_RATE_24M_MASK)
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#define IWL_OFDM_RATES_MASK \
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(IWL_OFDM_BASIC_RATES_MASK | \
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IWL_RATE_9M_MASK | \
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IWL_RATE_18M_MASK | \
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IWL_RATE_36M_MASK | \
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IWL_RATE_48M_MASK | \
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IWL_RATE_54M_MASK)
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#define IWL_BASIC_RATES_MASK \
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(IWL_OFDM_BASIC_RATES_MASK | \
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IWL_CCK_BASIC_RATES_MASK)
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#define IWL_RATES_MASK ((1 << IWL_RATE_COUNT) - 1)
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#define IWL_INV_TPT -1
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#define IWL_MIN_RSSI_VAL -100
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#define IWL_MAX_RSSI_VAL 0
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extern const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT];
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static inline u8 iwl3945_get_prev_ieee_rate(u8 rate_index)
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{
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u8 rate = iwl3945_rates[rate_index].prev_ieee;
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if (rate == IWL_RATE_INVALID)
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rate = rate_index;
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return rate;
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}
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/**
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* iwl3945_rate_scale_init - Initialize the rate scale table based on assoc info
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*
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* The specific throughput table used is based on the type of network
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* the associated with, including A, B, G, and G w/ TGG protection
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*/
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extern void iwl3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id);
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/**
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* iwl3945_rate_control_register - Register the rate control algorithm callbacks
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*
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* Since the rate control algorithm is hardware specific, there is no need
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* or reason to place it as a stand alone module. The driver can call
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* iwl3945_rate_control_register in order to register the rate control callbacks
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* with the mac80211 subsystem. This should be performed prior to calling
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* ieee80211_register_hw
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*
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*/
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extern int iwl3945_rate_control_register(void);
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/**
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* iwl3945_rate_control_unregister - Unregister the rate control callbacks
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*
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* This should be called after calling ieee80211_unregister_hw, but before
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* the driver is unloaded.
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*/
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extern void iwl3945_rate_control_unregister(void);
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#endif
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