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ath9k: Use rate_driver_data 

Remove the hack using vif, and use rate_driver_data within
skb->cb to hold driver specific rate information.
Setup the rate series in the skb's tx control area and remove
all references to ath9k specific rate series ( using struct ath_rc_series ).

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith 2008-11-18 09:07:30 +05:30 committed by John W. Linville
parent fe7f4a7745
commit a8efee4f47
5 changed files with 107 additions and 225 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/ath9k/core.h
View File

@ -203,7 +203,6 @@ struct ath_buf_state {
int bfs_seqno; /* sequence number */
int bfs_tidno; /* tid of this frame */
int bfs_retries; /* current retries */
struct ath_rc_series bfs_rcs[4]; /* rate series */
u32 bf_type; /* BUF_* (enum buffer_type) */
/* key type use to encrypt this frame */
u32 bfs_keyix;

9
drivers/net/wireless/ath9k/main.c
View File

@ -350,13 +350,12 @@ void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
DPRINTF(sc, ATH_DBG_XMIT,
"%s: TX complete: skb: %p\n", __func__, skb);
ieee80211_tx_info_clear_status(tx_info);
if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK ||
tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
/* free driver's private data area of tx_info, XXX: HACK! */
if (tx_info->control.vif != NULL)
kfree(tx_info->control.vif);
tx_info->control.vif = NULL;
if (tx_info->rate_driver_data[0] != NULL) {
kfree(tx_info->rate_driver_data[0]);
tx_info->rate_driver_data[0] = NULL;
}
}
if (tx_status->flags & ATH_TX_BAR) {

143
drivers/net/wireless/ath9k/rc.c
View File

@ -805,22 +805,22 @@ static u8 ath_rc_ratefind_ht(struct ath_softc *sc,
}
static void ath_rc_rate_set_series(struct ath_rate_table *rate_table ,
struct ath_rc_series *series,
struct ieee80211_tx_rate *rate,
u8 tries,
u8 rix,
int rtsctsenable)
{
series->tries = tries;
series->flags = (rtsctsenable ? ATH_RC_RTSCTS_FLAG : 0) |
(WLAN_RC_PHY_DS(rate_table->info[rix].phy) ?
ATH_RC_DS_FLAG : 0) |
(WLAN_RC_PHY_40(rate_table->info[rix].phy) ?
ATH_RC_CW40_FLAG : 0) |
(WLAN_RC_PHY_SGI(rate_table->info[rix].phy) ?
ATH_RC_SGI_FLAG : 0);
rate->count = tries;
rate->idx = rix;
series->rix = rate_table->info[rix].base_index;
series->max_4ms_framelen = rate_table->info[rix].max_4ms_framelen;
if (rtsctsenable)
rate->flags |= IEEE80211_TX_RC_USE_RTS_CTS;
if (WLAN_RC_PHY_40(rate_table->info[rix].phy))
rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
if (WLAN_RC_PHY_SGI(rate_table->info[rix].phy))
rate->flags |= IEEE80211_TX_RC_SHORT_GI;
if (WLAN_RC_PHY_HT(rate_table->info[rix].phy))
rate->flags |= IEEE80211_TX_RC_MCS;
}
static u8 ath_rc_rate_getidx(struct ath_softc *sc,
@ -855,11 +855,12 @@ static u8 ath_rc_rate_getidx(struct ath_softc *sc,
static void ath_rc_ratefind(struct ath_softc *sc,
struct ath_rate_node *ath_rc_priv,
int num_tries, int num_rates, unsigned int rcflag,
struct ath_rc_series series[], int *is_probe,
struct ieee80211_tx_info *tx_info, int *is_probe,
int is_retry)
{
u8 try_per_rate = 0, i = 0, rix, nrix;
struct ath_rate_table *rate_table;
struct ieee80211_tx_rate *rates = tx_info->control.rates;
rate_table = sc->hw_rate_table[sc->sc_curmode];
rix = ath_rc_ratefind_ht(sc, ath_rc_priv, rate_table,
@ -871,7 +872,7 @@ static void ath_rc_ratefind(struct ath_softc *sc,
/* set one try for probe rates. For the
* probes don't enable rts */
ath_rc_rate_set_series(rate_table,
&series[i++], 1, nrix, FALSE);
&rates[i++], 1, nrix, FALSE);
try_per_rate = (num_tries/num_rates);
/* Get the next tried/allowed rate. No RTS for the next series
@ -880,12 +881,12 @@ static void ath_rc_ratefind(struct ath_softc *sc,
nrix = ath_rc_rate_getidx(sc,
ath_rc_priv, rate_table, nrix, 1, FALSE);
ath_rc_rate_set_series(rate_table,
&series[i++], try_per_rate, nrix, 0);
&rates[i++], try_per_rate, nrix, 0);
} else {
try_per_rate = (num_tries/num_rates);
/* Set the choosen rate. No RTS for first series entry. */
ath_rc_rate_set_series(rate_table,
&series[i++], try_per_rate, nrix, FALSE);
&rates[i++], try_per_rate, nrix, FALSE);
}
/* Fill in the other rates for multirate retry */
@ -902,7 +903,7 @@ static void ath_rc_ratefind(struct ath_softc *sc,
rate_table, nrix, 1, min_rate);
/* All other rates in the series have RTS enabled */
ath_rc_rate_set_series(rate_table,
&series[i], try_num, nrix, TRUE);
&rates[i], try_num, nrix, TRUE);
}
/*
@ -928,9 +929,8 @@ static void ath_rc_ratefind(struct ath_softc *sc,
if (i == 4 &&
((dot11rate == 2 && phy == WLAN_RC_PHY_HT_40_SS) ||
(dot11rate == 3 && phy == WLAN_RC_PHY_HT_20_SS))) {
series[3].rix = series[2].rix;
series[3].flags = series[2].flags;
series[3].max_4ms_framelen = series[2].max_4ms_framelen;
rates[3].idx = rates[2].idx;
rates[3].flags = rates[2].flags;
}
}
}
@ -943,7 +943,7 @@ static void ath_rate_findrate(struct ath_softc *sc,
int num_tries,
int num_rates,
unsigned int rcflag,
struct ath_rc_series series[],
struct ieee80211_tx_info *tx_info,
int *is_probe,
int is_retry)
{
@ -951,7 +951,7 @@ static void ath_rate_findrate(struct ath_softc *sc,
return;
ath_rc_ratefind(sc, ath_rc_priv, num_tries, num_rates,
rcflag, series, is_probe, is_retry);
rcflag, tx_info, is_probe, is_retry);
}
static void ath_rc_update_ht(struct ath_softc *sc,
@ -1283,17 +1283,17 @@ static void ath_rc_update_ht(struct ath_softc *sc,
*/
static void ath_rc_update(struct ath_softc *sc,
struct ath_rate_node *ath_rc_priv,
struct ath_tx_info_priv *info_priv, int final_ts_idx,
struct ieee80211_tx_info *tx_info, int final_ts_idx,
int xretries, int long_retry)
{
struct ath_tx_info_priv *info_priv =
(struct ath_tx_info_priv *)tx_info->rate_driver_data[0];
struct ath_rate_table *rate_table;
struct ath_rc_series rcs[4];
struct ieee80211_tx_rate *rates = tx_info->status.rates;
u8 flags;
u32 series = 0, rix;
memcpy(rcs, info_priv->rcs, 4 * sizeof(rcs[0]));
rate_table = sc->hw_rate_table[sc->sc_curmode];
ASSERT(rcs[0].tries != 0);
/*
* If the first rate is not the final index, there
@ -1302,31 +1302,31 @@ static void ath_rc_update(struct ath_softc *sc,
if (final_ts_idx != 0) {
/* Process intermediate rates that failed.*/
for (series = 0; series < final_ts_idx ; series++) {
if (rcs[series].tries != 0) {
flags = rcs[series].flags;
if (rates[series].count != 0) {
flags = rates[series].flags;
/* If HT40 and we have switched mode from
* 40 to 20 => don't update */
if ((flags & ATH_RC_CW40_FLAG) &&
if ((flags & IEEE80211_TX_RC_40_MHZ_WIDTH) &&
(ath_rc_priv->rc_phy_mode !=
(flags & ATH_RC_CW40_FLAG)))
(flags & IEEE80211_TX_RC_40_MHZ_WIDTH)))
return;
if ((flags & ATH_RC_CW40_FLAG) &&
(flags & ATH_RC_SGI_FLAG))
if ((flags & IEEE80211_TX_RC_40_MHZ_WIDTH) &&
(flags & IEEE80211_TX_RC_SHORT_GI))
rix = rate_table->info[
rcs[series].rix].ht_index;
else if (flags & ATH_RC_SGI_FLAG)
rates[series].idx].ht_index;
else if (flags & IEEE80211_TX_RC_SHORT_GI)
rix = rate_table->info[
rcs[series].rix].sgi_index;
else if (flags & ATH_RC_CW40_FLAG)
rates[series].idx].sgi_index;
else if (flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
rix = rate_table->info[
rcs[series].rix].cw40index;
rates[series].idx].cw40index;
else
rix = rate_table->info[
rcs[series].rix].base_index;
rates[series].idx].base_index;
ath_rc_update_ht(sc, ath_rc_priv,
info_priv, rix,
xretries ? 1 : 2,
rcs[series].tries);
rates[series].count);
}
}
} else {
@ -1336,24 +1336,24 @@ static void ath_rc_update(struct ath_softc *sc,
* Treating it as an excessive retry penalizes the rate
* inordinately.
*/
if (rcs[0].tries == 1 && xretries == 1)
if (rates[0].count == 1 && xretries == 1)
xretries = 2;
}
flags = rcs[series].flags;
flags = rates[series].flags;
/* If HT40 and we have switched mode from 40 to 20 => don't update */
if ((flags & ATH_RC_CW40_FLAG) &&
(ath_rc_priv->rc_phy_mode != (flags & ATH_RC_CW40_FLAG)))
if ((flags & IEEE80211_TX_RC_40_MHZ_WIDTH) &&
(ath_rc_priv->rc_phy_mode != (flags & IEEE80211_TX_RC_40_MHZ_WIDTH)))
return;
if ((flags & ATH_RC_CW40_FLAG) && (flags & ATH_RC_SGI_FLAG))
rix = rate_table->info[rcs[series].rix].ht_index;
else if (flags & ATH_RC_SGI_FLAG)
rix = rate_table->info[rcs[series].rix].sgi_index;
else if (flags & ATH_RC_CW40_FLAG)
rix = rate_table->info[rcs[series].rix].cw40index;
if ((flags & IEEE80211_TX_RC_40_MHZ_WIDTH) && (flags & IEEE80211_TX_RC_SHORT_GI))
rix = rate_table->info[rates[series].idx].ht_index;
else if (flags & IEEE80211_TX_RC_SHORT_GI)
rix = rate_table->info[rates[series].idx].sgi_index;
else if (flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
rix = rate_table->info[rates[series].idx].cw40index;
else
rix = rate_table->info[rcs[series].rix].base_index;
rix = rate_table->info[rates[series].idx].base_index;
ath_rc_update_ht(sc, ath_rc_priv, info_priv, rix,
xretries, long_retry);
@ -1365,8 +1365,10 @@ static void ath_rc_update(struct ath_softc *sc,
static void ath_rate_tx_complete(struct ath_softc *sc,
struct ath_node *an,
struct ath_rate_node *rc_priv,
struct ath_tx_info_priv *info_priv)
struct ieee80211_tx_info *tx_info)
{
struct ath_tx_info_priv *info_priv =
(struct ath_tx_info_priv *)tx_info->rate_driver_data[0];
int final_ts_idx = info_priv->tx.ts_rateindex;
int tx_status = 0, is_underrun = 0;
@ -1395,7 +1397,7 @@ static void ath_rate_tx_complete(struct ath_softc *sc,
(info_priv->tx.ts_status & ATH9K_TXERR_FIFO))
tx_status = 1;
ath_rc_update(sc, rc_priv, info_priv, final_ts_idx, tx_status,
ath_rc_update(sc, rc_priv, tx_info, final_ts_idx, tx_status,
(is_underrun) ? ATH_11N_TXMAXTRY :
info_priv->tx.ts_longretry);
}
@ -1507,8 +1509,7 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
hdr = (struct ieee80211_hdr *)skb->data;
fc = hdr->frame_control;
/* XXX: UGLY HACK!! */
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
tx_info_priv = (struct ath_tx_info_priv *)tx_info->rate_driver_data[0];
an = (struct ath_node *)sta->drv_priv;
@ -1516,10 +1517,9 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
return;
if (an && priv_sta && ieee80211_is_data(fc))
ath_rate_tx_complete(sc, an, priv_sta, tx_info_priv);
ath_rate_tx_complete(sc, an, priv_sta, tx_info);
kfree(tx_info_priv);
tx_info->control.vif = NULL;
}
static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
@ -1530,28 +1530,18 @@ static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ath_softc *sc = priv;
struct ieee80211_hw *hw = sc->hw;
struct ath_tx_info_priv *tx_info_priv;
struct ath_rate_node *ath_rc_priv = priv_sta;
struct ath_node *an;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
int is_probe = FALSE;
s8 lowest_idx;
__le16 fc = hdr->frame_control;
u8 *qc, tid;
DPRINTF(sc, ATH_DBG_RATE, "%s\n", __func__);
/* allocate driver private area of tx_info, XXX: UGLY HACK! */
tx_info->control.vif = kzalloc(sizeof(*tx_info_priv), GFP_ATOMIC);
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
ASSERT(tx_info_priv != NULL);
lowest_idx = rate_lowest_index(sband, sta);
tx_info_priv->min_rate = (sband->bitrates[lowest_idx].bitrate * 2) / 10;
/* lowest rate for management and multicast/broadcast frames */
if (!ieee80211_is_data(fc) ||
is_multicast_ether_addr(hdr->addr1) || !sta) {
tx_info->control.rates[0].idx = lowest_idx;
if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1)) {
tx_info->control.rates[0].idx = rate_lowest_index(sband, sta);
tx_info->control.rates[0].count =
is_multicast_ether_addr(hdr->addr1) ? 1 : ATH_MGT_TXMAXTRY;
return;
}
@ -1559,24 +1549,11 @@ static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
ath_rate_findrate(sc, ath_rc_priv,
ATH_11N_TXMAXTRY, 4,
ATH_RC_PROBE_ALLOWED,
tx_info_priv->rcs,
tx_info,
&is_probe,
false);
#if 0
if (is_probe)
sel->probe_idx = ath_rc_priv->tx_ratectrl.probe_rate;
#endif
/* Ratecontrol sometimes returns invalid rate index */
if (tx_info_priv->rcs[0].rix != 0xff)
ath_rc_priv->prev_data_rix = tx_info_priv->rcs[0].rix;
else
tx_info_priv->rcs[0].rix = ath_rc_priv->prev_data_rix;
tx_info->control.rates[0].idx = tx_info_priv->rcs[0].rix;
/* Check if aggregation has to be enabled for this tid */
if (hw->conf.ht.enabled) {
if (ieee80211_is_data_qos(fc)) {
qc = ieee80211_get_qos_ctl(hdr);

17
drivers/net/wireless/ath9k/rc.h
View File

@ -169,20 +169,6 @@ struct ath_rate_table {
#define ATH_RC_PROBE_ALLOWED 0x00000001
#define ATH_RC_MINRATE_LASTRATE 0x00000002
struct ath_rc_series {
u8 rix;
u8 tries;
u8 flags;
u32 max_4ms_framelen;
};
/* rcs_flags definition */
#define ATH_RC_DS_FLAG 0x01
#define ATH_RC_CW40_FLAG 0x02 /* CW 40 */
#define ATH_RC_SGI_FLAG 0x04 /* Short Guard Interval */
#define ATH_RC_HT_FLAG 0x08 /* HT */
#define ATH_RC_RTSCTS_FLAG 0x10 /* RTS-CTS */
/*
* State structures for new rate adaptation code
*/
@ -259,13 +245,10 @@ struct ath_rate_node {
struct ath_rate_softc *asc;
};
/* Driver data of ieee80211_tx_info */
struct ath_tx_info_priv {
struct ath_rc_series rcs[4];
struct ath_tx_status tx;
int n_frames;
int n_bad_frames;
u8 min_rate;
};
void ath_rate_attach(struct ath_softc *sc);

162
drivers/net/wireless/ath9k/xmit.c
View File

@ -102,23 +102,6 @@ static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
ath9k_hw_txstart(ah, txq->axq_qnum);
}
/* Get transmit rate index using rate in Kbps */
static int ath_tx_findindex(const struct ath9k_rate_table *rt, int rate)
{
int i;
int ndx = 0;
for (i = 0; i < rt->rateCount; i++) {
if (rt->info[i].rateKbps == rate) {
ndx = i;
break;
}
}
return ndx;
}
/* Check if it's okay to send out aggregates */
static int ath_aggr_query(struct ath_softc *sc, struct ath_node *an, u8 tidno)
@ -158,26 +141,23 @@ static enum ath9k_pkt_type get_hw_packet_type(struct sk_buff *skb)
return htype;
}
static bool check_min_rate(struct sk_buff *skb)
static bool is_pae(struct sk_buff *skb)
{
struct ieee80211_hdr *hdr;
bool use_minrate = false;
__le16 fc;
hdr = (struct ieee80211_hdr *)skb->data;
fc = hdr->frame_control;
if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc)) {
use_minrate = true;
} else if (ieee80211_is_data(fc)) {
if (ieee80211_is_data(fc)) {
if (ieee80211_is_nullfunc(fc) ||
/* Port Access Entity (IEEE 802.1X) */
(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
use_minrate = true;
return true;
}
}
return use_minrate;
return false;
}
static int get_hw_crypto_keytype(struct sk_buff *skb)
@ -199,50 +179,19 @@ static int get_hw_crypto_keytype(struct sk_buff *skb)
static void setup_rate_retries(struct ath_softc *sc, struct sk_buff *skb)
{
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ath_tx_info_priv *tx_info_priv;
struct ath_rc_series *rcs;
struct ieee80211_tx_rate *rates = tx_info->control.rates;
struct ieee80211_hdr *hdr;
const struct ath9k_rate_table *rt;
bool use_minrate;
__le16 fc;
u8 rix;
rt = sc->sc_currates;
BUG_ON(!rt);
hdr = (struct ieee80211_hdr *)skb->data;
fc = hdr->frame_control;
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif; /* HACK */
rcs = tx_info_priv->rcs;
/* Check if min rates have to be used */
use_minrate = check_min_rate(skb);
if (ieee80211_is_data(fc) && !use_minrate) {
if (is_multicast_ether_addr(hdr->addr1)) {
rcs[0].rix =
ath_tx_findindex(rt, tx_info_priv->min_rate);
/* mcast packets are not re-tried */
rcs[0].tries = 1;
}
} else {
/* for management and control frames,
or for NULL and EAPOL frames */
if (use_minrate)
rcs[0].rix = ath_rate_findrateix(sc, tx_info_priv->min_rate);
else
rcs[0].rix = 0;
rcs[0].tries = ATH_MGT_TXMAXTRY;
}
rix = rcs[0].rix;
if (ieee80211_has_morefrags(fc) ||
(le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG)) {
rcs[1].tries = rcs[2].tries = rcs[3].tries = 0;
rcs[1].rix = rcs[2].rix = rcs[3].rix = 0;
rates[1].count = rates[2].count = rates[3].count = 0;
rates[1].idx = rates[2].idx = rates[3].idx = 0;
/* reset tries but keep rate index */
rcs[0].tries = ATH_TXMAXTRY;
rates[0].count = ATH_TXMAXTRY;
}
}
@ -274,7 +223,7 @@ static void assign_aggr_tid_seqno(struct sk_buff *skb,
/* Get seqno */
if (ieee80211_is_data(fc) && !check_min_rate(skb)) {
if (ieee80211_is_data(fc) && !is_pae(skb)) {
/* For HT capable stations, we save tidno for later use.
* We also override seqno set by upper layer with the one
* in tx aggregation state.
@ -573,9 +522,11 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
struct ath_node *an = NULL;
struct sk_buff *skb;
struct ieee80211_tx_info *tx_info;
struct ieee80211_tx_rate *rates;
skb = (struct sk_buff *)bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
rates = tx_info->rate_driver_data[0];
if (tx_info->control.sta)
an = (struct ath_node *)tx_info->control.sta->drv_priv;
@ -584,9 +535,9 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
* get the cix for the lowest valid rix.
*/
rt = sc->sc_currates;
for (i = 4; i--;) {
if (bf->bf_rcs[i].tries) {
rix = bf->bf_rcs[i].rix;
for (i = 3; i >= 0; i--) {
if (rates[i].count) {
rix = rates[i].idx;
break;
}
}
@ -662,27 +613,27 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
memset(series, 0, sizeof(struct ath9k_11n_rate_series) * 4);
for (i = 0; i < 4; i++) {
if (!bf->bf_rcs[i].tries)
if (!rates[i].count)
continue;
rix = bf->bf_rcs[i].rix;
rix = rates[i].idx;
series[i].Rate = rt->info[rix].rateCode |
(bf_isshpreamble(bf) ? rt->info[rix].shortPreamble : 0);
series[i].Tries = bf->bf_rcs[i].tries;
series[i].Tries = rates[i].count;
series[i].RateFlags = (
(bf->bf_rcs[i].flags & ATH_RC_RTSCTS_FLAG) ?
(rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS) ?
ATH9K_RATESERIES_RTS_CTS : 0) |
((bf->bf_rcs[i].flags & ATH_RC_CW40_FLAG) ?
((rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) ?
ATH9K_RATESERIES_2040 : 0) |
((bf->bf_rcs[i].flags & ATH_RC_SGI_FLAG) ?
((rates[i].flags & IEEE80211_TX_RC_SHORT_GI) ?
ATH9K_RATESERIES_HALFGI : 0);
series[i].PktDuration = ath_pkt_duration(sc, rix, bf,
(bf->bf_rcs[i].flags & ATH_RC_CW40_FLAG) != 0,
(bf->bf_rcs[i].flags & ATH_RC_SGI_FLAG),
(rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) != 0,
(rates[i].flags & IEEE80211_TX_RC_SHORT_GI),
bf_isshpreamble(bf));
if (bf_isht(bf) && an)
@ -718,22 +669,12 @@ static int ath_tx_send_normal(struct ath_softc *sc,
struct list_head *bf_head)
{
struct ath_buf *bf;
struct sk_buff *skb;
struct ieee80211_tx_info *tx_info;
struct ath_tx_info_priv *tx_info_priv;
BUG_ON(list_empty(bf_head));
bf = list_first_entry(bf_head, struct ath_buf, list);
bf->bf_state.bf_type &= ~BUF_AMPDU; /* regular HT frame */
skb = (struct sk_buff *)bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
/* XXX: HACK! */
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
memcpy(bf->bf_rcs, tx_info_priv->rcs, 4 * sizeof(tx_info_priv->rcs[0]));
/* update starting sequence number for subsequent ADDBA request */
INCR(tid->seq_start, IEEE80211_SEQ_MAX);
@ -1124,8 +1065,8 @@ static int ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
skb = bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
/* XXX: HACK! */
tx_info_priv = (struct ath_tx_info_priv *) tx_info->control.vif;
tx_info_priv =
(struct ath_tx_info_priv *)tx_info->rate_driver_data[0];
if (ds->ds_txstat.ts_status & ATH9K_TXERR_FILT)
tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
if ((ds->ds_txstat.ts_status & ATH9K_TXERR_FILT) == 0 &&
@ -1268,9 +1209,6 @@ static int ath_tx_send_ampdu(struct ath_softc *sc,
struct ath_tx_control *txctl)
{
struct ath_buf *bf;
struct sk_buff *skb;
struct ieee80211_tx_info *tx_info;
struct ath_tx_info_priv *tx_info_priv;
BUG_ON(list_empty(bf_head));
@ -1296,12 +1234,6 @@ static int ath_tx_send_ampdu(struct ath_softc *sc,
return 0;
}
skb = (struct sk_buff *)bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
/* XXX: HACK! */
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
memcpy(bf->bf_rcs, tx_info_priv->rcs, 4 * sizeof(tx_info_priv->rcs[0]));
/* Add sub-frame to BAW */
ath_tx_addto_baw(sc, tid, bf);
@ -1323,9 +1255,11 @@ static u32 ath_lookup_rate(struct ath_softc *sc,
struct ath_buf *bf,
struct ath_atx_tid *tid)
{
struct ath_rate_table *rate_table = sc->hw_rate_table[sc->sc_curmode];
const struct ath9k_rate_table *rt = sc->sc_currates;
struct sk_buff *skb;
struct ieee80211_tx_info *tx_info;
struct ieee80211_tx_rate *rates;
struct ath_tx_info_priv *tx_info_priv;
u32 max_4ms_framelen, frame_length;
u16 aggr_limit, legacy = 0, maxampdu;
@ -1333,10 +1267,9 @@ static u32 ath_lookup_rate(struct ath_softc *sc,
skb = (struct sk_buff *)bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
tx_info_priv = (struct ath_tx_info_priv *)
tx_info->control.vif; /* XXX: HACK! */
memcpy(bf->bf_rcs,
tx_info_priv->rcs, 4 * sizeof(tx_info_priv->rcs[0]));
rates = tx_info->control.rates;
tx_info_priv =
(struct ath_tx_info_priv *)tx_info->rate_driver_data[0];
/*
* Find the lowest frame length among the rate series that will have a
@ -1346,14 +1279,14 @@ static u32 ath_lookup_rate(struct ath_softc *sc,
max_4ms_framelen = ATH_AMPDU_LIMIT_MAX;
for (i = 0; i < 4; i++) {
if (bf->bf_rcs[i].tries) {
frame_length = bf->bf_rcs[i].max_4ms_framelen;
if (rt->info[bf->bf_rcs[i].rix].phy != PHY_HT) {
if (rates[i].count) {
if (rt->info[rates[i].idx].phy != PHY_HT) {
legacy = 1;
break;
}
frame_length =
rate_table->info[rates[i].idx].max_4ms_framelen;
max_4ms_framelen = min(max_4ms_framelen, frame_length);
}
}
@ -1393,6 +1326,8 @@ static int ath_compute_num_delims(struct ath_softc *sc,
u16 frmlen)
{
const struct ath9k_rate_table *rt = sc->sc_currates;
struct sk_buff *skb = bf->bf_mpdu;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
u32 nsymbits, nsymbols, mpdudensity;
u16 minlen;
u8 rc, flags, rix;
@ -1425,11 +1360,11 @@ static int ath_compute_num_delims(struct ath_softc *sc,
if (mpdudensity == 0)
return ndelim;
rix = bf->bf_rcs[0].rix;
flags = bf->bf_rcs[0].flags;
rix = tx_info->control.rates[0].idx;
flags = tx_info->control.rates[0].flags;
rc = rt->info[rix].rateCode;
width = (flags & ATH_RC_CW40_FLAG) ? 1 : 0;
half_gi = (flags & ATH_RC_SGI_FLAG) ? 1 : 0;
width = (flags & IEEE80211_TX_RC_40_MHZ_WIDTH) ? 1 : 0;
half_gi = (flags & IEEE80211_TX_RC_SHORT_GI) ? 1 : 0;
if (half_gi)
nsymbols = NUM_SYMBOLS_PER_USEC_HALFGI(mpdudensity);
@ -1471,7 +1406,7 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc,
u16 aggr_limit = 0, al = 0, bpad = 0,
al_delta, h_baw = tid->baw_size / 2;
enum ATH_AGGR_STATUS status = ATH_AGGR_DONE;
int prev_al = 0, is_ds_rate = 0;
int prev_al = 0;
INIT_LIST_HEAD(&bf_head);
BUG_ON(list_empty(&tid->buf_q));
@ -1492,11 +1427,6 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc,
if (!rl) {
aggr_limit = ath_lookup_rate(sc, bf, tid);
rl = 1;
/*
* Is rate dual stream
*/
is_ds_rate =
(bf->bf_rcs[0].flags & ATH_RC_DS_FLAG) ? 1 : 0;
}
/*
@ -1739,14 +1669,13 @@ static void ath_tx_setup_buffer(struct ath_softc *sc, struct ath_buf *bf,
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ath_tx_info_priv *tx_info_priv;
struct ath_rc_series *rcs;
int hdrlen;
__le16 fc;
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
tx_info_priv = kzalloc(sizeof(*tx_info_priv), GFP_KERNEL);
tx_info->rate_driver_data[0] = tx_info_priv;
hdrlen = ieee80211_get_hdrlen_from_skb(skb);
fc = hdr->frame_control;
rcs = tx_info_priv->rcs;
ATH_TXBUF_RESET(bf);
@ -1766,7 +1695,7 @@ static void ath_tx_setup_buffer(struct ath_softc *sc, struct ath_buf *bf,
(sc->sc_flags & SC_OP_PREAMBLE_SHORT) ?
(bf->bf_state.bf_type |= BUF_SHORT_PREAMBLE) :
(bf->bf_state.bf_type &= ~BUF_SHORT_PREAMBLE);
(sc->hw->conf.ht.enabled &&
(sc->hw->conf.ht.enabled && !is_pae(skb) &&
(tx_info->flags & IEEE80211_TX_CTL_AMPDU)) ?
(bf->bf_state.bf_type |= BUF_HT) :
(bf->bf_state.bf_type &= ~BUF_HT);
@ -1788,11 +1717,6 @@ static void ath_tx_setup_buffer(struct ath_softc *sc, struct ath_buf *bf,
setup_rate_retries(sc, skb);
bf->bf_rcs[0] = rcs[0];
bf->bf_rcs[1] = rcs[1];
bf->bf_rcs[2] = rcs[2];
bf->bf_rcs[3] = rcs[3];
/* Assign seqno, tidno */
if (bf_isht(bf) && (sc->sc_flags & SC_OP_TXAGGR))