diff options
Diffstat (limited to 'drivers/net/wireless/ath9k/rc.h')
| -rw-r--r-- | drivers/net/wireless/ath9k/rc.h | 222 |
1 files changed, 116 insertions, 106 deletions
diff --git a/drivers/net/wireless/ath9k/rc.h b/drivers/net/wireless/ath9k/rc.h index 71aef9c7523..b95b41508b9 100644 --- a/drivers/net/wireless/ath9k/rc.h +++ b/drivers/net/wireless/ath9k/rc.h @@ -71,9 +71,6 @@ enum ieee80211_fixed_rate_mode { */ #define IEEE80211_RATE_IDX_ENTRY(val, idx) (((val&(0xff<<(idx*8)))>>(idx*8))) -#define SHORT_PRE 1 -#define LONG_PRE 0 - #define WLAN_PHY_HT_20_SS WLAN_RC_PHY_HT_20_SS #define WLAN_PHY_HT_20_DS WLAN_RC_PHY_HT_20_DS #define WLAN_PHY_HT_20_DS_HGI WLAN_RC_PHY_HT_20_DS_HGI @@ -102,18 +99,18 @@ enum { WLAN_RC_PHY_MAX }; -#define WLAN_RC_PHY_DS(_phy) ((_phy == WLAN_RC_PHY_HT_20_DS) \ - || (_phy == WLAN_RC_PHY_HT_40_DS) \ - || (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \ - || (_phy == WLAN_RC_PHY_HT_40_DS_HGI)) -#define WLAN_RC_PHY_40(_phy) ((_phy == WLAN_RC_PHY_HT_40_SS) \ - || (_phy == WLAN_RC_PHY_HT_40_DS) \ - || (_phy == WLAN_RC_PHY_HT_40_SS_HGI) \ - || (_phy == WLAN_RC_PHY_HT_40_DS_HGI)) +#define WLAN_RC_PHY_DS(_phy) ((_phy == WLAN_RC_PHY_HT_20_DS) \ + || (_phy == WLAN_RC_PHY_HT_40_DS) \ + || (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \ + || (_phy == WLAN_RC_PHY_HT_40_DS_HGI)) +#define WLAN_RC_PHY_40(_phy) ((_phy == WLAN_RC_PHY_HT_40_SS) \ + || (_phy == WLAN_RC_PHY_HT_40_DS) \ + || (_phy == WLAN_RC_PHY_HT_40_SS_HGI) \ + || (_phy == WLAN_RC_PHY_HT_40_DS_HGI)) #define WLAN_RC_PHY_SGI(_phy) ((_phy == WLAN_RC_PHY_HT_20_SS_HGI) \ - || (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \ - || (_phy == WLAN_RC_PHY_HT_40_SS_HGI) \ - || (_phy == WLAN_RC_PHY_HT_40_DS_HGI)) + || (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \ + || (_phy == WLAN_RC_PHY_HT_40_SS_HGI) \ + || (_phy == WLAN_RC_PHY_HT_40_DS_HGI)) #define WLAN_RC_PHY_HT(_phy) (_phy >= WLAN_RC_PHY_HT_20_SS) @@ -135,56 +132,59 @@ enum { #define WLAN_RC_SGI_FLAG (0x04) #define WLAN_RC_HT_FLAG (0x08) -/* Index into the rate table */ -#define INIT_RATE_MAX_20 23 -#define INIT_RATE_MAX_40 40 - #define RATE_TABLE_SIZE 64 -/* XXX: Convert to kdoc */ +/** + * struct ath_rate_table - Rate Control table + * @valid: valid for use in rate control + * @valid_single_stream: valid for use in rate control for + * single stream operation + * @phy: CCK/OFDM + * @ratekbps: rate in Kbits per second + * @user_ratekbps: user rate in Kbits per second + * @ratecode: rate that goes into HW descriptors + * @short_preamble: Mask for enabling short preamble in ratecode for CCK + * @dot11rate: value that goes into supported + * rates info element of MLME + * @ctrl_rate: Index of next lower basic rate, used for duration computation + * @max_4ms_framelen: maximum frame length(bytes) for tx duration + * @probe_interval: interval for rate control to probe for other rates + * @rssi_reduce_interval: interval for rate control to reduce rssi + * @initial_ratemax: initial ratemax value used in ath_rc_sib_update() + */ struct ath_rate_table { int rate_cnt; struct { - int valid; /* Valid for use in rate control */ - int valid_single_stream;/* Valid for use in rate control - for single stream operation */ - u8 phy; /* CCK/OFDM/TURBO/XR */ - u32 ratekbps; /* Rate in Kbits per second */ - u32 user_ratekbps; /* User rate in KBits per second */ - u8 ratecode; /* rate that goes into - hw descriptors */ - u8 short_preamble; /* Mask for enabling short preamble - in rate code for CCK */ - u8 dot11rate; /* Value that goes into supported - rates info element of MLME */ - u8 ctrl_rate; /* Index of next lower basic rate, - used for duration computation */ - int8_t rssi_ack_validmin; /* Rate control related */ - int8_t rssi_ack_deltamin; /* Rate control related */ - u8 base_index; /* base rate index */ - u8 cw40index; /* 40cap rate index */ - u8 sgi_index; /* shortgi rate index */ - u8 ht_index; /* shortgi rate index */ - u32 max_4ms_framelen; /* Maximum frame length(bytes) - for 4ms tx duration */ + int valid; + int valid_single_stream; + u8 phy; + u32 ratekbps; + u32 user_ratekbps; + u8 ratecode; + u8 short_preamble; + u8 dot11rate; + u8 ctrl_rate; + int8_t rssi_ack_validmin; + int8_t rssi_ack_deltamin; + u8 base_index; + u8 cw40index; + u8 sgi_index; + u8 ht_index; + u32 max_4ms_framelen; } info[RATE_TABLE_SIZE]; - u32 probe_interval; /* interval for ratectrl to - probe for other rates */ - u32 rssi_reduce_interval; /* interval for ratectrl - to reduce RSSI */ - u8 initial_ratemax; /* the initial ratemax value used - in ath_rc_sib_update() */ + u32 probe_interval; + u32 rssi_reduce_interval; + u8 initial_ratemax; }; #define ATH_RC_PROBE_ALLOWED 0x00000001 #define ATH_RC_MINRATE_LASTRATE 0x00000002 -#define ATH_RC_SHORT_PREAMBLE 0x00000004 struct ath_rc_series { - u8 rix; - u8 tries; - u8 flags; - u32 max_4ms_framelen; + u8 rix; + u8 tries; + u8 flags; + u32 max_4ms_framelen; }; /* rcs_flags definition */ @@ -201,42 +201,56 @@ struct ath_rc_series { #define MAX_TX_RATE_PHY 48 struct ath_tx_ratectrl_state { - int8_t rssi_thres; /* required rssi for this rate (dB) */ - u8 per; /* recent estimate of packet error rate (%) */ + int8_t rssi_thres; /* required rssi for this rate (dB) */ + u8 per; /* recent estimate of packet error rate (%) */ }; +/** + * struct ath_tx_ratectrl - TX Rate control Information + * @state: RC state + * @rssi_last: last ACK rssi + * @rssi_last_lookup: last ACK rssi used for lookup + * @rssi_last_prev: previous last ACK rssi + * @rssi_last_prev2: 2nd previous last ACK rssi + * @rssi_sum_cnt: count of rssi_sum for averaging + * @rssi_sum_rate: rate that we are averaging + * @rssi_sum: running sum of rssi for averaging + * @probe_rate: rate we are probing at + * @rssi_time: msec timestamp for last ack rssi + * @rssi_down_time: msec timestamp for last down step + * @probe_time: msec timestamp for last probe + * @hw_maxretry_pktcnt: num of packets since we got HW max retry error + * @max_valid_rate: maximum number of valid rate + * @per_down_time: msec timestamp for last PER down step + * @valid_phy_ratecnt: valid rate count + * @rate_max_phy: phy index for the max rate + * @probe_interval: interval for ratectrl to probe for other rates + */ struct ath_tx_ratectrl { - struct ath_tx_ratectrl_state state[MAX_TX_RATE_TBL]; /* state */ - int8_t rssi_last; /* last ack rssi */ - int8_t rssi_last_lookup; /* last ack rssi used for lookup */ - int8_t rssi_last_prev; /* previous last ack rssi */ - int8_t rssi_last_prev2; /* 2nd previous last ack rssi */ - int32_t rssi_sum_cnt; /* count of rssi_sum for averaging */ - int32_t rssi_sum_rate; /* rate that we are averaging */ - int32_t rssi_sum; /* running sum of rssi for averaging */ - u32 valid_txrate_mask; /* mask of valid rates */ - u8 rate_table_size; /* rate table size */ - u8 rate_max; /* max rate that has recently worked */ - u8 probe_rate; /* rate we are probing at */ - u32 rssi_time; /* msec timestamp for last ack rssi */ - u32 rssi_down_time; /* msec timestamp for last down step */ - u32 probe_time; /* msec timestamp for last probe */ - u8 hw_maxretry_pktcnt; /* num packets since we got - HW max retry error */ - u8 max_valid_rate; /* maximum number of valid rate */ - u8 valid_rate_index[MAX_TX_RATE_TBL]; /* valid rate index */ - u32 per_down_time; /* msec timstamp for last - PER down step */ + struct ath_tx_ratectrl_state state[MAX_TX_RATE_TBL]; + int8_t rssi_last; + int8_t rssi_last_lookup; + int8_t rssi_last_prev; + int8_t rssi_last_prev2; + int32_t rssi_sum_cnt; + int32_t rssi_sum_rate; + int32_t rssi_sum; + u8 rate_table_size; + u8 probe_rate; + u32 rssi_time; + u32 rssi_down_time; + u32 probe_time; + u8 hw_maxretry_pktcnt; + u8 max_valid_rate; + u8 valid_rate_index[MAX_TX_RATE_TBL]; + u32 per_down_time; /* 11n state */ - u8 valid_phy_ratecnt[WLAN_RC_PHY_MAX]; /* valid rate count */ - u8 valid_phy_rateidx[WLAN_RC_PHY_MAX][MAX_TX_RATE_TBL]; - u8 rc_phy_mode; - u8 rate_max_phy; /* Phy index for the max rate */ - u32 rate_max_lastused; /* msec timstamp of when we - last used rateMaxPhy */ - u32 probe_interval; /* interval for ratectrl to probe - for other rates */ + u8 valid_phy_ratecnt[WLAN_RC_PHY_MAX]; + u8 valid_phy_rateidx[WLAN_RC_PHY_MAX][MAX_TX_RATE_TBL]; + u8 rc_phy_mode; + u8 rate_max_phy; + u32 probe_interval; }; struct ath_rateset { @@ -248,29 +262,32 @@ struct ath_rateset { struct ath_rate_softc { /* phy tables that contain rate control data */ const void *hw_rate_table[ATH9K_MODE_MAX]; - int fixedrix; /* -1 or index of fixed rate */ + + /* -1 or index of fixed rate */ + int fixedrix; }; /* per-node state */ struct ath_rate_node { - struct ath_tx_ratectrl tx_ratectrl; /* rate control state proper */ - u32 prev_data_rix; /* rate idx of last data frame */ + struct ath_tx_ratectrl tx_ratectrl; - /* map of rate ix -> negotiated rate set ix */ - u8 rixmap[MAX_TX_RATE_TBL]; + /* rate idx of last data frame */ + u32 prev_data_rix; - /* map of ht rate ix -> negotiated rate set ix */ - u8 ht_rixmap[MAX_TX_RATE_TBL]; + /* ht capabilities */ + u8 ht_cap; - u8 ht_cap; /* ht capabilities */ - u8 ant_tx; /* current transmit antenna */ + /* When TRUE, only single stream Tx possible */ + u8 single_stream; - u8 single_stream; /* When TRUE, only single - stream Tx possible */ - struct ath_rateset neg_rates; /* Negotiated rates */ - struct ath_rateset neg_ht_rates; /* Negotiated HT rates */ - struct ath_rate_softc *asc; /* back pointer to atheros softc */ - struct ath_vap *avp; /* back pointer to vap */ + /* Negotiated rates */ + struct ath_rateset neg_rates; + + /* Negotiated HT rates */ + struct ath_rateset neg_ht_rates; + + struct ath_rate_softc *asc; + struct ath_vap *avp; }; /* Driver data of ieee80211_tx_info */ @@ -297,17 +314,10 @@ void ath_rc_node_update(struct ieee80211_hw *hw, struct ath_rate_node *rc_priv); void ath_rate_newstate(struct ath_softc *sc, struct ath_vap *avp); /* - * Return the tx rate series. - */ -void ath_rate_findrate(struct ath_softc *sc, struct ath_rate_node *ath_rc_priv, - int num_tries, int num_rates, - unsigned int rcflag, struct ath_rc_series[], - int *is_probe, int isretry); -/* * Return rate index for given Dot11 Rate. */ u8 ath_rate_findrateix(struct ath_softc *sc, - u8 dot11_rate); + u8 dot11_rate); /* Routines to register/unregister rate control algorithm */ int ath_rate_control_register(void); |