On Sat, 2015-05-02 at 18:17 +0200, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
> The patch below does not apply to the 4.0-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@xxxxxxxxxxxxxxx>.
>
> thanks,
>
> greg k-h
>
> ------------------ original commit in Linus's tree ------------------
>
> From 3c2d24a9147e4c041ce94be2d166afe89225ff93 Mon Sep 17 00:00:00 2001
> From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
> Date: Mon, 23 Feb 2015 02:40:07 +0200
> Subject: [PATCH] iwlwifi: fix max_ht_ampdu_exponent for older devices
>
Just like for 3.19 - please drop. Thanks.
> The commit below didn't update the max_ht_ampdu_exponent
> for the devices listed in iwl-[1-6]000.c which, in result,
> became 0 instead of 8K. This reduced the size of the Rx
> AMPDU from 64K to 8K which had an impact in the Rx
> throughput. One user reported that because of this, his
> downstream throughput droppped by a half.
>
> CC: <stable@xxxxxxxxxxxxxxx> [3.19]
> Fixes: c064ddf318aa ("iwlwifi: change max HT and VHT A-MPDU exponent")
> Reported-and-tested-by: Valentin Manea <linux-wireless@xxxxxx>
> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
>
> diff --git a/drivers/net/wireless/iwlwifi/iwl-1000.c b/drivers/net/wireless/iwlwifi/iwl-1000.c
> index c3817fae16c0..06f6cc08f451 100644
> --- a/drivers/net/wireless/iwlwifi/iwl-1000.c
> +++ b/drivers/net/wireless/iwlwifi/iwl-1000.c
> @@ -95,7 +95,8 @@ static const struct iwl_eeprom_params iwl1000_eeprom_params = {
> .nvm_calib_ver = EEPROM_1000_TX_POWER_VERSION, \
> .base_params = &iwl1000_base_params, \
> .eeprom_params = &iwl1000_eeprom_params, \
> - .led_mode = IWL_LED_BLINK
> + .led_mode = IWL_LED_BLINK, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl1000_bgn_cfg = {
> .name = "Intel(R) Centrino(R) Wireless-N 1000 BGN",
> @@ -121,7 +122,8 @@ const struct iwl_cfg iwl1000_bg_cfg = {
> .base_params = &iwl1000_base_params, \
> .eeprom_params = &iwl1000_eeprom_params, \
> .led_mode = IWL_LED_RF_STATE, \
> - .rx_with_siso_diversity = true
> + .rx_with_siso_diversity = true, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl100_bgn_cfg = {
> .name = "Intel(R) Centrino(R) Wireless-N 100 BGN",
> diff --git a/drivers/net/wireless/iwlwifi/iwl-2000.c b/drivers/net/wireless/iwlwifi/iwl-2000.c
> index 21e5d0843a62..890b95f497d6 100644
> --- a/drivers/net/wireless/iwlwifi/iwl-2000.c
> +++ b/drivers/net/wireless/iwlwifi/iwl-2000.c
> @@ -123,7 +123,9 @@ static const struct iwl_eeprom_params iwl20x0_eeprom_params = {
> .nvm_calib_ver = EEPROM_2000_TX_POWER_VERSION, \
> .base_params = &iwl2000_base_params, \
> .eeprom_params = &iwl20x0_eeprom_params, \
> - .led_mode = IWL_LED_RF_STATE
> + .led_mode = IWL_LED_RF_STATE, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
> +
>
> const struct iwl_cfg iwl2000_2bgn_cfg = {
> .name = "Intel(R) Centrino(R) Wireless-N 2200 BGN",
> @@ -149,7 +151,8 @@ const struct iwl_cfg iwl2000_2bgn_d_cfg = {
> .nvm_calib_ver = EEPROM_2000_TX_POWER_VERSION, \
> .base_params = &iwl2030_base_params, \
> .eeprom_params = &iwl20x0_eeprom_params, \
> - .led_mode = IWL_LED_RF_STATE
> + .led_mode = IWL_LED_RF_STATE, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl2030_2bgn_cfg = {
> .name = "Intel(R) Centrino(R) Wireless-N 2230 BGN",
> @@ -170,7 +173,8 @@ const struct iwl_cfg iwl2030_2bgn_cfg = {
> .base_params = &iwl2000_base_params, \
> .eeprom_params = &iwl20x0_eeprom_params, \
> .led_mode = IWL_LED_RF_STATE, \
> - .rx_with_siso_diversity = true
> + .rx_with_siso_diversity = true, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl105_bgn_cfg = {
> .name = "Intel(R) Centrino(R) Wireless-N 105 BGN",
> @@ -197,7 +201,8 @@ const struct iwl_cfg iwl105_bgn_d_cfg = {
> .base_params = &iwl2030_base_params, \
> .eeprom_params = &iwl20x0_eeprom_params, \
> .led_mode = IWL_LED_RF_STATE, \
> - .rx_with_siso_diversity = true
> + .rx_with_siso_diversity = true, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl135_bgn_cfg = {
> .name = "Intel(R) Centrino(R) Wireless-N 135 BGN",
> diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
> index 332bbede39e5..724194e23414 100644
> --- a/drivers/net/wireless/iwlwifi/iwl-5000.c
> +++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
> @@ -93,7 +93,8 @@ static const struct iwl_eeprom_params iwl5000_eeprom_params = {
> .nvm_calib_ver = EEPROM_5000_TX_POWER_VERSION, \
> .base_params = &iwl5000_base_params, \
> .eeprom_params = &iwl5000_eeprom_params, \
> - .led_mode = IWL_LED_BLINK
> + .led_mode = IWL_LED_BLINK, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl5300_agn_cfg = {
> .name = "Intel(R) Ultimate N WiFi Link 5300 AGN",
> @@ -158,7 +159,8 @@ const struct iwl_cfg iwl5350_agn_cfg = {
> .base_params = &iwl5000_base_params, \
> .eeprom_params = &iwl5000_eeprom_params, \
> .led_mode = IWL_LED_BLINK, \
> - .internal_wimax_coex = true
> + .internal_wimax_coex = true, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl5150_agn_cfg = {
> .name = "Intel(R) WiMAX/WiFi Link 5150 AGN",
> diff --git a/drivers/net/wireless/iwlwifi/iwl-6000.c b/drivers/net/wireless/iwlwifi/iwl-6000.c
> index 8f2c3c8c6b84..21b2630763dc 100644
> --- a/drivers/net/wireless/iwlwifi/iwl-6000.c
> +++ b/drivers/net/wireless/iwlwifi/iwl-6000.c
> @@ -145,7 +145,8 @@ static const struct iwl_eeprom_params iwl6000_eeprom_params = {
> .nvm_calib_ver = EEPROM_6005_TX_POWER_VERSION, \
> .base_params = &iwl6000_g2_base_params, \
> .eeprom_params = &iwl6000_eeprom_params, \
> - .led_mode = IWL_LED_RF_STATE
> + .led_mode = IWL_LED_RF_STATE, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl6005_2agn_cfg = {
> .name = "Intel(R) Centrino(R) Advanced-N 6205 AGN",
> @@ -199,7 +200,8 @@ const struct iwl_cfg iwl6005_2agn_mow2_cfg = {
> .nvm_calib_ver = EEPROM_6030_TX_POWER_VERSION, \
> .base_params = &iwl6000_g2_base_params, \
> .eeprom_params = &iwl6000_eeprom_params, \
> - .led_mode = IWL_LED_RF_STATE
> + .led_mode = IWL_LED_RF_STATE, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl6030_2agn_cfg = {
> .name = "Intel(R) Centrino(R) Advanced-N 6230 AGN",
> @@ -235,7 +237,8 @@ const struct iwl_cfg iwl6030_2bg_cfg = {
> .nvm_calib_ver = EEPROM_6030_TX_POWER_VERSION, \
> .base_params = &iwl6000_g2_base_params, \
> .eeprom_params = &iwl6000_eeprom_params, \
> - .led_mode = IWL_LED_RF_STATE
> + .led_mode = IWL_LED_RF_STATE, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl6035_2agn_cfg = {
> .name = "Intel(R) Centrino(R) Advanced-N 6235 AGN",
> @@ -290,7 +293,8 @@ const struct iwl_cfg iwl130_bg_cfg = {
> .nvm_calib_ver = EEPROM_6000_TX_POWER_VERSION, \
> .base_params = &iwl6000_base_params, \
> .eeprom_params = &iwl6000_eeprom_params, \
> - .led_mode = IWL_LED_BLINK
> + .led_mode = IWL_LED_BLINK, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl6000i_2agn_cfg = {
> .name = "Intel(R) Centrino(R) Advanced-N 6200 AGN",
> @@ -322,7 +326,8 @@ const struct iwl_cfg iwl6000i_2bg_cfg = {
> .base_params = &iwl6050_base_params, \
> .eeprom_params = &iwl6000_eeprom_params, \
> .led_mode = IWL_LED_BLINK, \
> - .internal_wimax_coex = true
> + .internal_wimax_coex = true, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl6050_2agn_cfg = {
> .name = "Intel(R) Centrino(R) Advanced-N + WiMAX 6250 AGN",
> @@ -347,7 +352,8 @@ const struct iwl_cfg iwl6050_2abg_cfg = {
> .base_params = &iwl6050_base_params, \
> .eeprom_params = &iwl6000_eeprom_params, \
> .led_mode = IWL_LED_BLINK, \
> - .internal_wimax_coex = true
> + .internal_wimax_coex = true, \
> + .max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K
>
> const struct iwl_cfg iwl6150_bgn_cfg = {
> .name = "Intel(R) Centrino(R) Wireless-N + WiMAX 6150 BGN",
>
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