Hi Wireless Developers, I have a Lenovo ThinkPad T430 (2342-CTO) with an Intel Centrino Ultimate-N 6300 (8086:4238) wireless card. With the help of Reventlov and johill on #linux-wireless, we discovered that enabling TX AMPDU, by passing module option 11n_disable=8 (IWL_ENABLE_HT_TXAGG) to iwlwifi, increased TCP throughput significantly: With an ASUS RT-ACRH13 AP and `iperf3 -s` running on a server with a 1Gbps wired connection, `iperf3 -R -c` on the ThinkPad increased from 63.2 to 104 Mbits/sec (using MCS 15 40MHz short GI). With a Buffalo WZR-600DHP running OpenWRT, `iperf3 -R -c` increased from 63.2 to 76.9. TX AMPDU was disabled by default for all iwldvm cards in 205e2210daa9 because "iwldvm don't handle well TX AMPDU". However, I have been using this configuration for >2 weeks without any issues or measurable change in ping times to the AP. Are there any other potential side-effects I can check? Would it be possible to enable TX AMPDU by default for at least some of these cards? If so, what additional information would be required? Thanks for considering, Kevin
