Currently, dynack was only tested upstream using AP/STA mode.
Testing it on IBSS, showed that late-ack detection was broken.
This is caused due to dynack using Association Request/Response
frames for late-ack detection, which IBSS does not use.
Also allowing Authentication frames here solves this.
A second issue also got fixed, which was also seen AP/STA mode:
When a station was added, the estimated value would be exponentially averaged
using 0 as a starting point.
This means that on larger distances, the ack timeout was still not high
enough before synchronizing would run out of late-ack's for estimation.
Fix this by using the initial estimated value as a baseline
and only start averaging in the following estimation rounds.
Test setup:
- 2x identical devices: RB912UAG-5HPnD + 19dB sector
- IBSS
- 2x2 802.11an (ar9340), HT20, long GI
- RSSI's -70 / -71
- Real distance: 23910 meter
Results (60s iperf runs):
Fixed coverage class 54 (up to 24300m):
* 21.5 Mbits/sec
Dynack:
* 28.9 Mbits/sec
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
These patches were added after the new matches structure for the
mac80211 package was created. All the deleted patches are already
integrated in kernel 4.19-rc4.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This updates mac80211 to backports based on kernel 4.19-rc4.
I plan to integrate all the patches which are in this tar into upstream
backports soon.
I used the backports generated from this code:
https://github.com/hauke/backports/commits/wip2
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
