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>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-fw.h b/drivers/net/wireless/iwlwifi/iwl-fw.h
index d5ed1500afd5..0aa7c0085c9f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-fw.h
+++ b/drivers/net/wireless/iwlwifi/iwl-fw.h
@@ -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),