microsoft
/
WSL2-Linux-Kernel
зеркало из https://github.com/microsoft/WSL2-Linux-Kernel.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность

rt2x00: Hardcode TX ack timeout and consume time 

The calculated values for the ACK timeout and ACK
consume time are different then the values as
used by the Legacy drivers.

After testing from James Ledwith it appeared that
the calculated values caused a high amount of TX
failures, and the values from the Legacy drivers
were the most optimal to prevent TX failure due to
excessive retries.

The symptoms of this problem:
 - Rate control module always falls back to 1Mbs
 - Low throughput when bitrate was fixed

Possible side-effects (not confirmed but highly likely)
 - Problems with DHCP
 - Broken connections due to lack of probe response

This should fix at least:
Kernel bugzilla reports: [13362], [13009], [9273]
Fedora bugzilla reports: [443203]
but possible some additional bugs as well.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ivo van Doorn 2009-09-06 15:14:23 +02:00 коммит произвёл John W. Linville
Родитель fd413da852
Коммит 4789666e13
8 изменённых файлов: 7 добавлений и 28 удалений
Показать статистику Скачать Patch файл Скачать Diff файл Показать все файлы Свернуть все файлы

5
drivers/net/wireless/rt2x00/rt2400pci.c
Просмотреть файл

@ -331,9 +331,8 @@ static void rt2400pci_config_erp(struct rt2x00_dev *rt2x00dev,
preamble_mask = erp->short_preamble << 3;
rt2x00pci_register_read(rt2x00dev, TXCSR1, &reg);
rt2x00_set_field32(&reg, TXCSR1_ACK_TIMEOUT, erp->ack_timeout);
rt2x00_set_field32(&reg, TXCSR1_ACK_CONSUME_TIME,
erp->ack_consume_time);
rt2x00_set_field32(&reg, TXCSR1_ACK_TIMEOUT, 0x1ff);
rt2x00_set_field32(&reg, TXCSR1_ACK_CONSUME_TIME, 0x13a);
rt2x00_set_field32(&reg, TXCSR1_TSF_OFFSET, IEEE80211_HEADER);
rt2x00_set_field32(&reg, TXCSR1_AUTORESPONDER, 1);
rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);

5
drivers/net/wireless/rt2x00/rt2500pci.c
Просмотреть файл

@ -337,9 +337,8 @@ static void rt2500pci_config_erp(struct rt2x00_dev *rt2x00dev,
preamble_mask = erp->short_preamble << 3;
rt2x00pci_register_read(rt2x00dev, TXCSR1, &reg);
rt2x00_set_field32(&reg, TXCSR1_ACK_TIMEOUT, erp->ack_timeout);
rt2x00_set_field32(&reg, TXCSR1_ACK_CONSUME_TIME,
erp->ack_consume_time);
rt2x00_set_field32(&reg, TXCSR1_ACK_TIMEOUT, 0x162);
rt2x00_set_field32(&reg, TXCSR1_ACK_CONSUME_TIME, 0xa2);
rt2x00_set_field32(&reg, TXCSR1_TSF_OFFSET, IEEE80211_HEADER);
rt2x00_set_field32(&reg, TXCSR1_AUTORESPONDER, 1);
rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);

4
drivers/net/wireless/rt2x00/rt2500usb.c
Просмотреть файл

@ -488,10 +488,6 @@ static void rt2500usb_config_erp(struct rt2x00_dev *rt2x00dev,
{
u16 reg;
rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, erp->ack_timeout);
rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
!!erp->short_preamble);

3
drivers/net/wireless/rt2x00/rt2800usb.c
Просмотреть файл

@ -580,8 +580,7 @@ static void rt2800usb_config_erp(struct rt2x00_dev *rt2x00dev,
u32 reg;
rt2x00usb_register_read(rt2x00dev, TX_TIMEOUT_CFG, &reg);
rt2x00_set_field32(&reg, TX_TIMEOUT_CFG_RX_ACK_TIMEOUT,
DIV_ROUND_UP(erp->ack_timeout, erp->slot_time));
rt2x00_set_field32(&reg, TX_TIMEOUT_CFG_RX_ACK_TIMEOUT, 0x20);
rt2x00usb_register_write(rt2x00dev, TX_TIMEOUT_CFG, reg);
rt2x00usb_register_read(rt2x00dev, AUTO_RSP_CFG, &reg);

3
drivers/net/wireless/rt2x00/rt2x00.h
Просмотреть файл

@ -417,9 +417,6 @@ struct rt2x00lib_erp {
int short_preamble;
int cts_protection;
int ack_timeout;
int ack_consume_time;
u32 basic_rates;
int slot_time;

11
drivers/net/wireless/rt2x00/rt2x00config.c
Просмотреть файл

@ -94,17 +94,6 @@ void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev,
erp.difs = bss_conf->use_short_slot ? SHORT_DIFS : DIFS;
erp.eifs = bss_conf->use_short_slot ? SHORT_EIFS : EIFS;
erp.ack_timeout = PLCP + erp.difs + GET_DURATION(ACK_SIZE, 10);
erp.ack_consume_time = SIFS + PLCP + GET_DURATION(ACK_SIZE, 10);
if (bss_conf->use_short_preamble) {
erp.ack_timeout += SHORT_PREAMBLE;
erp.ack_consume_time += SHORT_PREAMBLE;
} else {
erp.ack_timeout += PREAMBLE;
erp.ack_consume_time += PREAMBLE;
}
erp.basic_rates = bss_conf->basic_rates;
erp.beacon_int = bss_conf->beacon_int;

2
drivers/net/wireless/rt2x00/rt61pci.c
Просмотреть файл

@ -598,7 +598,7 @@ static void rt61pci_config_erp(struct rt2x00_dev *rt2x00dev,
u32 reg;
rt2x00pci_register_read(rt2x00dev, TXRX_CSR0, &reg);
rt2x00_set_field32(&reg, TXRX_CSR0_RX_ACK_TIMEOUT, erp->ack_timeout);
rt2x00_set_field32(&reg, TXRX_CSR0_RX_ACK_TIMEOUT, 0x32);
rt2x00_set_field32(&reg, TXRX_CSR0_TSF_OFFSET, IEEE80211_HEADER);
rt2x00pci_register_write(rt2x00dev, TXRX_CSR0, reg);

2
drivers/net/wireless/rt2x00/rt73usb.c
Просмотреть файл

@ -561,7 +561,7 @@ static void rt73usb_config_erp(struct rt2x00_dev *rt2x00dev,
u32 reg;
rt2x00usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
rt2x00_set_field32(&reg, TXRX_CSR0_RX_ACK_TIMEOUT, erp->ack_timeout);
rt2x00_set_field32(&reg, TXRX_CSR0_RX_ACK_TIMEOUT, 0x32);
rt2x00_set_field32(&reg, TXRX_CSR0_TSF_OFFSET, IEEE80211_HEADER);
rt2x00usb_register_write(rt2x00dev, TXRX_CSR0, reg);