Support MPDU/A-MSDU (jumbo frames) on supported WiFi hardware
Username: n8v8R
Origin: https://bugs.openwrt.org/index.php?do=details&task_id=1999
- Device problem occurs on
Turris Omnia ARMv7 Processor rev 1 (v7l)
- Software versions of OpenWrt/LEDE release, packages, etc.
Chaos Calmer r47055 | target:mvebu/generic | description:OpenWrt omnia 15.05
- Steps to reproduce
/etc/config/network config device option name wlan option mtu 2305
/etc/config/wireless config wifi-iface option device 'radio0' option ifname 'wlan'
Start the network and the mtu remains at 1500. Lowering the setting to 2304 and it is accepted.
According to my understanding from reading various publications, and I take this one as sample reference
https://www.oreilly.com/library/view/80211ac-a-survival/9781449357702/ch03.html
, 802.11n and 802.11ac support jumbo frames through MPDU (MAC frame) size and A-MSDU (aggregate MAC payload) respectively.
Thus I would trust it would benefit WLAN performance, particularly when also deploying the kernel’s MTU probing feature (net.ipv4.tcp_mtu_probing = 1).