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ath9k: Maintain rate table choice after association 

A scan run after association would change sc_curmode which is
used to get the current rate table. This patch fixes it
by removing sc_curmode and setting the rate table in usage in cur_rate_table
on association.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith 2008-12-07 21:42:10 +05:30 committed by John W. Linville
parent 40990ec01f
commit 3706de6f58
6 changed files with 12 additions and 13 deletions
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2
drivers/net/wireless/ath9k/beacon.c
View File

@ -106,7 +106,7 @@ static void ath_beacon_setup(struct ath_softc *sc,
* XXX everything at min xmit rate
*/
rix = 0;
rt = sc->hw_rate_table[sc->sc_curmode];
rt = sc->cur_rate_table;
rate = rt->info[rix].ratecode;
if (sc->sc_flags & SC_OP_PREAMBLE_SHORT)
rate |= rt->info[rix].short_preamble;

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

@ -646,7 +646,6 @@ struct ath_softc {
u8 sc_tx_chainmask;
u8 sc_rx_chainmask;
enum ath9k_int sc_imask;
enum wireless_mode sc_curmode;
enum PROT_MODE sc_protmode;
u8 sc_nbcnvaps;

3
drivers/net/wireless/ath9k/main.c
View File

@ -60,7 +60,8 @@ static void bus_read_cachesize(struct ath_softc *sc, int *csz)
static void ath_setcurmode(struct ath_softc *sc, enum wireless_mode mode)
{
sc->sc_curmode = mode;
if (!sc->sc_curaid)
sc->cur_rate_table = sc->hw_rate_table[mode];
/*
* All protection frames are transmited at 2Mb/s for
* 11g, otherwise at 1Mb/s.

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

@ -874,9 +874,8 @@ static void ath_rc_ratefind(struct ath_softc *sc,
* So, set fourth rate in series to be same as third one for
* above conditions.
*/
if ((sc->sc_curmode == ATH9K_MODE_11NG_HT20) ||
(sc->sc_curmode == ATH9K_MODE_11NG_HT40PLUS) ||
(sc->sc_curmode == ATH9K_MODE_11NG_HT40MINUS)) {
if ((sc->hw->conf.channel->band == IEEE80211_BAND_2GHZ) &&
(sc->hw->conf.ht.enabled)) {
u8 dot11rate = rate_table->info[rix].dot11rate;
u8 phy = rate_table->info[rix].phy;
if (i == 4 &&
@ -1354,8 +1353,8 @@ static void ath_rc_init(struct ath_softc *sc,
sta->ht_cap.ht_supported,
is_cw_40);
} else if (sc->sc_ah->ah_opmode == NL80211_IFTYPE_AP) {
/* sc_curmode would be set on init through config() */
rate_table = sc->hw_rate_table[sc->sc_curmode];
/* cur_rate_table would be set on init through config() */
rate_table = sc->cur_rate_table;
}
if (!rate_table) {

2
drivers/net/wireless/ath9k/recv.c
View File

@ -148,7 +148,7 @@ static int ath_rx_prepare(struct sk_buff *skb, struct ath_desc *ds,
struct ieee80211_rx_status *rx_status, bool *decrypt_error,
struct ath_softc *sc)
{
struct ath_rate_table *rate_table = sc->hw_rate_table[sc->sc_curmode];
struct ath_rate_table *rate_table = sc->cur_rate_table;
struct ieee80211_hdr *hdr;
int ratekbps, rix;
u8 ratecode;

8
drivers/net/wireless/ath9k/xmit.c
View File

@ -493,7 +493,7 @@ static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, struct ath_buf *bf,
int width, int half_gi, bool shortPreamble)
{
struct ath_rate_table *rate_table = sc->hw_rate_table[sc->sc_curmode];
struct ath_rate_table *rate_table = sc->cur_rate_table;
u32 nbits, nsymbits, duration, nsymbols;
u8 rc;
int streams, pktlen;
@ -557,7 +557,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
}
/* get the cix for the lowest valid rix */
rt = sc->hw_rate_table[sc->sc_curmode];
rt = sc->cur_rate_table;
for (i = 3; i >= 0; i--) {
if (rates[i].count && (rates[i].idx >= 0)) {
rix = rates[i].idx;
@ -1240,7 +1240,7 @@ 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];
struct ath_rate_table *rate_table = sc->cur_rate_table;
struct sk_buff *skb;
struct ieee80211_tx_info *tx_info;
struct ieee80211_tx_rate *rates;
@ -1308,7 +1308,7 @@ static int ath_compute_num_delims(struct ath_softc *sc,
struct ath_buf *bf,
u16 frmlen)
{
struct ath_rate_table *rt = sc->hw_rate_table[sc->sc_curmode];
struct ath_rate_table *rt = sc->cur_rate_table;
struct sk_buff *skb = bf->bf_mpdu;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
u32 nsymbits, nsymbols, mpdudensity;