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iwlwifi: mvm: add uapsd_disable module parameter 

Some APs (e.g. TP-LINK TL-WA801N) are disabling aggregation (downlink
to station) when U-APSD is enabled, resulting in low throughput.
Add a module parameter to allow disabling U-APSD support in the driver.

Also re-enable U-APSD for -9 firmware since the firmare issues were
fixed in this release.

There are devices that won't support U-APSD even with newer
firmware, so bring the TLV flag back to detect those.

Signed-off-by: Matt Chen <matt.chen@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Matt Chen 2014-04-24 18:43:18 +08:00 committed by Emmanuel Grumbach
parent 91479b64c9
commit 1504f48df4
4 changed files with 15 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/wireless/iwlwifi/iwl-drv.c
View File

@ -1243,6 +1243,7 @@ struct iwl_mod_params iwlwifi_mod_params = {
.bt_coex_active = true,
.power_level = IWL_POWER_INDEX_1,
.wd_disable = true,
.uapsd_disable = false,
/* the rest are 0 by default */
};
IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
@ -1356,6 +1357,10 @@ MODULE_PARM_DESC(wd_disable,
module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
MODULE_PARM_DESC(nvm_file, "NVM file name");
module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable,
bool, S_IRUGO);
MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: N)");
/*
* set bt_coex_active to true, uCode will do kill/defer
* every time the priority line is asserted (BT is sending signals on the

3
drivers/net/wireless/iwlwifi/iwl-fw.h
View File

@ -74,7 +74,7 @@
* @IWL_UCODE_TLV_FLAGS_MFP: This uCode image supports MFP (802.11w).
* @IWL_UCODE_TLV_FLAGS_P2P: This uCode image supports P2P.
* @IWL_UCODE_TLV_FLAGS_DW_BC_TABLE: The SCD byte count table is in DWORDS
* @IWL_UCODE_TLV_FLAGS_UAPSD: This uCode image supports uAPSD
* @IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT: This uCode image supports uAPSD
* @IWL_UCODE_TLV_FLAGS_SHORT_BL: 16 entries of black list instead of 64 in scan
* offload profile config command.
* @IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS: D3 image supports up to six
@ -107,6 +107,7 @@ enum iwl_ucode_tlv_flag {
IWL_UCODE_TLV_FLAGS_P2P_PM = BIT(21),
IWL_UCODE_TLV_FLAGS_BSS_P2P_PS_DCM = BIT(22),
IWL_UCODE_TLV_FLAGS_BSS_P2P_PS_SCM = BIT(23),
IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT = BIT(24),
IWL_UCODE_TLV_FLAGS_EBS_SUPPORT = BIT(25),
IWL_UCODE_TLV_FLAGS_P2P_PS_UAPSD = BIT(26),
IWL_UCODE_TLV_FLAGS_BCAST_FILTERING = BIT(29),

1
drivers/net/wireless/iwlwifi/iwl-modparams.h
View File

@ -119,6 +119,7 @@ struct iwl_mod_params {
#endif
int ant_coupling;
char *nvm_file;
bool uapsd_disable;
};
#endif /* #__iwl_modparams_h__ */

13
drivers/net/wireless/iwlwifi/mvm/mac80211.c
View File

@ -276,7 +276,6 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
IEEE80211_HW_AMPDU_AGGREGATION |
IEEE80211_HW_TIMING_BEACON_ONLY |
IEEE80211_HW_CONNECTION_MONITOR |
IEEE80211_HW_SUPPORTS_UAPSD |
IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
IEEE80211_HW_SUPPORTS_STATIC_SMPS;
@ -286,8 +285,6 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
IEEE80211_RADIOTAP_MCS_HAVE_STBC;
hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
hw->rate_control_algorithm = "iwl-mvm-rs";
hw->uapsd_queues = IWL_UAPSD_AC_INFO;
hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
/*
* Enable 11w if advertised by firmware and software crypto
@ -298,9 +295,13 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
!iwlwifi_mod_params.sw_crypto)
hw->flags |= IEEE80211_HW_MFP_CAPABLE;
/* Disable uAPSD due to firmware issues */
if (true)
hw->flags &= ~IEEE80211_HW_SUPPORTS_UAPSD;
if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
!iwlwifi_mod_params.uapsd_disable) {
hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
hw->uapsd_queues = IWL_UAPSD_AC_INFO;
hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
}
hw->sta_data_size = sizeof(struct iwl_mvm_sta);
hw->vif_data_size = sizeof(struct iwl_mvm_vif);