ath9k: rc.h cleanup
Use kernel doc syntax for comments and remove a few unused macros. Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith
John W. Linville
parent
1fe1132bad
commit
5701ed843e
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@ -1141,14 +1141,14 @@ static void ath_rc_ratefind(struct ath_softc *sc,
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/*
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* Return the Tx rate series.
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*/
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void ath_rate_findrate(struct ath_softc *sc,
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struct ath_rate_node *ath_rc_priv,
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int num_tries,
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int num_rates,
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unsigned int rcflag,
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struct ath_rc_series series[],
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int *is_probe,
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int is_retry)
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static void ath_rate_findrate(struct ath_softc *sc,
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struct ath_rate_node *ath_rc_priv,
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int num_tries,
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int num_rates,
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unsigned int rcflag,
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struct ath_rc_series series[],
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int *is_probe,
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int is_retry)
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{
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struct ath_vap *avp = ath_rc_priv->avp;
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@ -1942,7 +1942,7 @@ static void ath_get_rate(void *priv, struct net_device *dev,
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struct ath_rate_node *ath_rc_priv;
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struct ath_node *an;
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struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
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int is_probe, chk, ret;
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int is_probe = FALSE, chk, ret;
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s8 lowest_idx;
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__le16 fc = hdr->frame_control;
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u8 *qc, tid;
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@ -71,9 +71,6 @@ enum ieee80211_fixed_rate_mode {
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*/
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#define IEEE80211_RATE_IDX_ENTRY(val, idx) (((val&(0xff<<(idx*8)))>>(idx*8)))
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#define SHORT_PRE 1
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#define LONG_PRE 0
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#define WLAN_PHY_HT_20_SS WLAN_RC_PHY_HT_20_SS
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#define WLAN_PHY_HT_20_DS WLAN_RC_PHY_HT_20_DS
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#define WLAN_PHY_HT_20_DS_HGI WLAN_RC_PHY_HT_20_DS_HGI
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@ -102,18 +99,18 @@ enum {
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WLAN_RC_PHY_MAX
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};
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#define WLAN_RC_PHY_DS(_phy) ((_phy == WLAN_RC_PHY_HT_20_DS) \
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|| (_phy == WLAN_RC_PHY_HT_40_DS) \
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|| (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \
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|| (_phy == WLAN_RC_PHY_HT_40_DS_HGI))
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#define WLAN_RC_PHY_40(_phy) ((_phy == WLAN_RC_PHY_HT_40_SS) \
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|| (_phy == WLAN_RC_PHY_HT_40_DS) \
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|| (_phy == WLAN_RC_PHY_HT_40_SS_HGI) \
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|| (_phy == WLAN_RC_PHY_HT_40_DS_HGI))
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#define WLAN_RC_PHY_DS(_phy) ((_phy == WLAN_RC_PHY_HT_20_DS) \
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|| (_phy == WLAN_RC_PHY_HT_40_DS) \
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|| (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \
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|| (_phy == WLAN_RC_PHY_HT_40_DS_HGI))
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#define WLAN_RC_PHY_40(_phy) ((_phy == WLAN_RC_PHY_HT_40_SS) \
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|| (_phy == WLAN_RC_PHY_HT_40_DS) \
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|| (_phy == WLAN_RC_PHY_HT_40_SS_HGI) \
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|| (_phy == WLAN_RC_PHY_HT_40_DS_HGI))
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#define WLAN_RC_PHY_SGI(_phy) ((_phy == WLAN_RC_PHY_HT_20_SS_HGI) \
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|| (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \
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|| (_phy == WLAN_RC_PHY_HT_40_SS_HGI) \
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|| (_phy == WLAN_RC_PHY_HT_40_DS_HGI))
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|| (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \
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|| (_phy == WLAN_RC_PHY_HT_40_SS_HGI) \
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|| (_phy == WLAN_RC_PHY_HT_40_DS_HGI))
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#define WLAN_RC_PHY_HT(_phy) (_phy >= WLAN_RC_PHY_HT_20_SS)
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@ -135,56 +132,59 @@ enum {
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#define WLAN_RC_SGI_FLAG (0x04)
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#define WLAN_RC_HT_FLAG (0x08)
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/* Index into the rate table */
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#define INIT_RATE_MAX_20 23
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#define INIT_RATE_MAX_40 40
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#define RATE_TABLE_SIZE 64
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/* XXX: Convert to kdoc */
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/**
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* struct ath_rate_table - Rate Control table
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* @valid: valid for use in rate control
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* @valid_single_stream: valid for use in rate control for
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* single stream operation
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* @phy: CCK/OFDM
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* @ratekbps: rate in Kbits per second
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* @user_ratekbps: user rate in Kbits per second
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* @ratecode: rate that goes into HW descriptors
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* @short_preamble: Mask for enabling short preamble in ratecode for CCK
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* @dot11rate: value that goes into supported
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* rates info element of MLME
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* @ctrl_rate: Index of next lower basic rate, used for duration computation
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* @max_4ms_framelen: maximum frame length(bytes) for tx duration
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* @probe_interval: interval for rate control to probe for other rates
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* @rssi_reduce_interval: interval for rate control to reduce rssi
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* @initial_ratemax: initial ratemax value used in ath_rc_sib_update()
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*/
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struct ath_rate_table {
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int rate_cnt;
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struct {
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int valid; /* Valid for use in rate control */
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int valid_single_stream;/* Valid for use in rate control
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for single stream operation */
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u8 phy; /* CCK/OFDM/TURBO/XR */
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u32 ratekbps; /* Rate in Kbits per second */
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u32 user_ratekbps; /* User rate in KBits per second */
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u8 ratecode; /* rate that goes into
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hw descriptors */
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u8 short_preamble; /* Mask for enabling short preamble
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in rate code for CCK */
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u8 dot11rate; /* Value that goes into supported
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rates info element of MLME */
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u8 ctrl_rate; /* Index of next lower basic rate,
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used for duration computation */
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int8_t rssi_ack_validmin; /* Rate control related */
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int8_t rssi_ack_deltamin; /* Rate control related */
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u8 base_index; /* base rate index */
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u8 cw40index; /* 40cap rate index */
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u8 sgi_index; /* shortgi rate index */
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u8 ht_index; /* shortgi rate index */
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u32 max_4ms_framelen; /* Maximum frame length(bytes)
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for 4ms tx duration */
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int valid;
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int valid_single_stream;
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u8 phy;
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u32 ratekbps;
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u32 user_ratekbps;
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u8 ratecode;
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u8 short_preamble;
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u8 dot11rate;
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u8 ctrl_rate;
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int8_t rssi_ack_validmin;
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int8_t rssi_ack_deltamin;
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u8 base_index;
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u8 cw40index;
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u8 sgi_index;
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u8 ht_index;
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u32 max_4ms_framelen;
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} info[RATE_TABLE_SIZE];
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u32 probe_interval; /* interval for ratectrl to
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probe for other rates */
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u32 rssi_reduce_interval; /* interval for ratectrl
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to reduce RSSI */
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u8 initial_ratemax; /* the initial ratemax value used
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in ath_rc_sib_update() */
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u32 probe_interval;
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u32 rssi_reduce_interval;
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u8 initial_ratemax;
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};
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#define ATH_RC_PROBE_ALLOWED 0x00000001
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#define ATH_RC_MINRATE_LASTRATE 0x00000002
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#define ATH_RC_SHORT_PREAMBLE 0x00000004
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struct ath_rc_series {
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u8 rix;
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u8 tries;
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u8 flags;
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u32 max_4ms_framelen;
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u8 rix;
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u8 tries;
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u8 flags;
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u32 max_4ms_framelen;
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};
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/* rcs_flags definition */
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@ -201,42 +201,56 @@ struct ath_rc_series {
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#define MAX_TX_RATE_PHY 48
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struct ath_tx_ratectrl_state {
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int8_t rssi_thres; /* required rssi for this rate (dB) */
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u8 per; /* recent estimate of packet error rate (%) */
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int8_t rssi_thres; /* required rssi for this rate (dB) */
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u8 per; /* recent estimate of packet error rate (%) */
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};
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/**
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* struct ath_tx_ratectrl - TX Rate control Information
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* @state: RC state
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* @rssi_last: last ACK rssi
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* @rssi_last_lookup: last ACK rssi used for lookup
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* @rssi_last_prev: previous last ACK rssi
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* @rssi_last_prev2: 2nd previous last ACK rssi
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* @rssi_sum_cnt: count of rssi_sum for averaging
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* @rssi_sum_rate: rate that we are averaging
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* @rssi_sum: running sum of rssi for averaging
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* @probe_rate: rate we are probing at
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* @rssi_time: msec timestamp for last ack rssi
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* @rssi_down_time: msec timestamp for last down step
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* @probe_time: msec timestamp for last probe
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* @hw_maxretry_pktcnt: num of packets since we got HW max retry error
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* @max_valid_rate: maximum number of valid rate
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* @per_down_time: msec timestamp for last PER down step
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* @valid_phy_ratecnt: valid rate count
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* @rate_max_phy: phy index for the max rate
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* @probe_interval: interval for ratectrl to probe for other rates
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*/
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struct ath_tx_ratectrl {
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struct ath_tx_ratectrl_state state[MAX_TX_RATE_TBL]; /* state */
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int8_t rssi_last; /* last ack rssi */
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int8_t rssi_last_lookup; /* last ack rssi used for lookup */
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int8_t rssi_last_prev; /* previous last ack rssi */
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int8_t rssi_last_prev2; /* 2nd previous last ack rssi */
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int32_t rssi_sum_cnt; /* count of rssi_sum for averaging */
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int32_t rssi_sum_rate; /* rate that we are averaging */
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int32_t rssi_sum; /* running sum of rssi for averaging */
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u32 valid_txrate_mask; /* mask of valid rates */
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u8 rate_table_size; /* rate table size */
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u8 rate_max; /* max rate that has recently worked */
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u8 probe_rate; /* rate we are probing at */
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u32 rssi_time; /* msec timestamp for last ack rssi */
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u32 rssi_down_time; /* msec timestamp for last down step */
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u32 probe_time; /* msec timestamp for last probe */
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u8 hw_maxretry_pktcnt; /* num packets since we got
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HW max retry error */
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u8 max_valid_rate; /* maximum number of valid rate */
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u8 valid_rate_index[MAX_TX_RATE_TBL]; /* valid rate index */
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u32 per_down_time; /* msec timstamp for last
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PER down step */
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struct ath_tx_ratectrl_state state[MAX_TX_RATE_TBL];
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int8_t rssi_last;
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int8_t rssi_last_lookup;
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int8_t rssi_last_prev;
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int8_t rssi_last_prev2;
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int32_t rssi_sum_cnt;
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int32_t rssi_sum_rate;
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int32_t rssi_sum;
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u8 rate_table_size;
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u8 probe_rate;
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u32 rssi_time;
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u32 rssi_down_time;
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u32 probe_time;
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u8 hw_maxretry_pktcnt;
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u8 max_valid_rate;
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u8 valid_rate_index[MAX_TX_RATE_TBL];
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u32 per_down_time;
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/* 11n state */
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u8 valid_phy_ratecnt[WLAN_RC_PHY_MAX]; /* valid rate count */
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u8 valid_phy_rateidx[WLAN_RC_PHY_MAX][MAX_TX_RATE_TBL];
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u8 rc_phy_mode;
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u8 rate_max_phy; /* Phy index for the max rate */
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u32 rate_max_lastused; /* msec timstamp of when we
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last used rateMaxPhy */
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u32 probe_interval; /* interval for ratectrl to probe
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for other rates */
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u8 valid_phy_ratecnt[WLAN_RC_PHY_MAX];
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u8 valid_phy_rateidx[WLAN_RC_PHY_MAX][MAX_TX_RATE_TBL];
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u8 rc_phy_mode;
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u8 rate_max_phy;
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u32 probe_interval;
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};
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struct ath_rateset {
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@ -248,29 +262,32 @@ struct ath_rateset {
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struct ath_rate_softc {
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/* phy tables that contain rate control data */
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const void *hw_rate_table[ATH9K_MODE_MAX];
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int fixedrix; /* -1 or index of fixed rate */
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/* -1 or index of fixed rate */
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int fixedrix;
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};
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/* per-node state */
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struct ath_rate_node {
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struct ath_tx_ratectrl tx_ratectrl; /* rate control state proper */
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u32 prev_data_rix; /* rate idx of last data frame */
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struct ath_tx_ratectrl tx_ratectrl;
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/* map of rate ix -> negotiated rate set ix */
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u8 rixmap[MAX_TX_RATE_TBL];
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/* rate idx of last data frame */
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u32 prev_data_rix;
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/* map of ht rate ix -> negotiated rate set ix */
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u8 ht_rixmap[MAX_TX_RATE_TBL];
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/* ht capabilities */
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u8 ht_cap;
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u8 ht_cap; /* ht capabilities */
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u8 ant_tx; /* current transmit antenna */
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/* When TRUE, only single stream Tx possible */
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u8 single_stream;
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u8 single_stream; /* When TRUE, only single
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stream Tx possible */
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struct ath_rateset neg_rates; /* Negotiated rates */
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struct ath_rateset neg_ht_rates; /* Negotiated HT rates */
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struct ath_rate_softc *asc; /* back pointer to atheros softc */
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struct ath_vap *avp; /* back pointer to vap */
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/* Negotiated rates */
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struct ath_rateset neg_rates;
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/* Negotiated HT rates */
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struct ath_rateset neg_ht_rates;
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struct ath_rate_softc *asc;
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struct ath_vap *avp;
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};
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/* Driver data of ieee80211_tx_info */
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@ -296,18 +313,11 @@ void ath_rate_detach(struct ath_rate_softc *asc);
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void ath_rc_node_update(struct ieee80211_hw *hw, struct ath_rate_node *rc_priv);
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void ath_rate_newstate(struct ath_softc *sc, struct ath_vap *avp);
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/*
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* Return the tx rate series.
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*/
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void ath_rate_findrate(struct ath_softc *sc, struct ath_rate_node *ath_rc_priv,
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int num_tries, int num_rates,
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unsigned int rcflag, struct ath_rc_series[],
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int *is_probe, int isretry);
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/*
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* Return rate index for given Dot11 Rate.
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*/
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u8 ath_rate_findrateix(struct ath_softc *sc,
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u8 dot11_rate);
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u8 dot11_rate);
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/* Routines to register/unregister rate control algorithm */
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int ath_rate_control_register(void);
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