Hi,
Some features of 802.11ax without central organizing (AP) STA can also be
used in mesh mode. The main goal is to get this working for ath11k. But
there are various problems at the moment with the firmware. I hangs
from time to time during assoc (especially when using HE) or just doesn't
enable HE rates when communicating with peers. Even when the peer was
successfully detected as HE capable by the upper layers:
root@OpenWrt:/# cat /sys/kernel/debug/ieee80211/phy2/netdev:mesh2/stations/00:03:7f:12:bb:97/he_capa
HE supported
MAC-CAP: 0x09 0x0d 0x08 0x0a 0x40 0x00
HTC-HE
DYNAMIC-FRAG-LEVEL-1
MAX-NUM-FRAG-MSDU-1
MIN-FRAG-SIZE-128
TF-MAC-PAD-DUR-24US
MULTI-TID-AGG-RX-QOS-1
LINK-ADAPTATION-NO-FEEDBACK
BSR
OMI-CONTROL
MAX-AMPDU-LEN-EXP-VHT-1
AMSDU-IN-AMPDU
MULTI-TID-AGG-TX-QOS-0
PHY CAP: 0x1c 0x70 0x0c 0x80 0x0d 0x43 0x81 0x1c 0x00 0x00 0x00
CHANNEL-WIDTH-SET-40MHZ-80MHZ-IN-5G
CHANNEL-WIDTH-SET-160MHZ-IN-5G
CHANNEL-WIDTH-SET-80PLUS80-MHZ-IN-5G
IEEE80211-HE-PHY-CAP1-DEVICE-CLASS-A
LDPC-CODING-IN-PAYLOAD
HY-CAP1-HE-LTF-AND-GI-FOR-HE-PPDUS-0-8US
MIDAMBLE-RX-MAX-NSTS-0
STBC-TX-UNDER-80MHZ
STBC-RX-UNDER-80MHZ
DCM-MAX-CONST-TX-NO-DCM
DCM-MAX-CONST-RX-NO-DCM
SU-BEAMFORMER
SU-BEAMFORMEE
BEAMFORMEE-MAX-STS-UNDER-7
BEAMFORMEE-MAX-STS-ABOVE-4
NUM-SND-DIM-UNDER-80MHZ-4
NUM-SND-DIM-ABOVE-80MHZ-1
NG16-SU-FEEDBACK
CODEBOOK-SIZE-42-SU
PPE-THRESHOLD-PRESENT
HE-SU-MU-PPDU-4XLTF-AND-08-US-GI
MAX-NC-4
DCM-MAX-RU-242
NOMINAL-PACKET-PADDING-0US
RX-MCS-80: 0xffaa
RX-MCS-80-0-SUPPORT-0-11
RX-MCS-80-1-SUPPORT-0-11
RX-MCS-80-2-SUPPORT-0-11
RX-MCS-80-3-SUPPORT-0-11
TX-MCS-80: 0xffaa
TX-MCS-80-0-SUPPORT-0-11
TX-MCS-80-1-SUPPORT-0-11
TX-MCS-80-2-SUPPORT-0-11
TX-MCS-80-3-SUPPORT-0-11
RX-MCS-160: 0xfffa
RX-MCS-160-0-SUPPORT-0-11
RX-MCS-160-1-SUPPORT-0-11
RX-MCS-160-2-NOT-SUPPORTED
RX-MCS-160-3-NOT-SUPPORTED
TX-MCS-160: 0xfffa
TX-MCS-160-0-SUPPORT-0-11
TX-MCS-160-1-SUPPORT-0-11
TX-MCS-160-2-NOT-SUPPORTED
TX-MCS-160-3-NOT-SUPPORTED
RX-MCS-80P80: 0xfffa
RX-MCS-80P80-0-SUPPORT-0-11
RX-MCS-80P80-1-SUPPORT-0-11
RX-MCS-80P80-2-NOT-SUPPORTED
RX-MCS-80P80-3-NOT-SUPPORTED
TX-MCS-80P80: 0xfffa
TX-MCS-80P80-0-SUPPORT-0-11
TX-MCS-80P80-1-SUPPORT-0-11
TX-MCS-80P80-2-NOT-SUPPORTED
TX-MCS-80P80-3-NOT-SUPPORTED
PPE-THRESHOLDS: 0x3b 0x1c 0xc7 0x71 0x1c 0xc7 0x71 0x1c 0xc7 0x71
root@OpenWrt:/# iw dev mesh2 station dump
Station 00:03:7f:12:bb:97 (on mesh2)
inactive time: 310 ms
rx bytes: 161064
rx packets: 1619
tx bytes: 55454
tx packets: 477
tx retries: 405
tx failed: 0
rx drop misc: 6
signal: -95 dBm
signal avg: -67 dBm
tx bitrate: 1733.3 MBit/s VHT-MCS 9 80MHz short GI VHT-NSS 4
rx bitrate: 1733.3 MBit/s VHT-MCS 9 80MHz short GI VHT-NSS 4
rx duration: 0 us
mesh llid: 0
mesh plid: 0
mesh plink: ESTAB
mesh local PS mode: ACTIVE
mesh peer PS mode: ACTIVE
mesh non-peer PS mode: ACTIVE
authorized: yes
authenticated: yes
associated: yes
preamble: long
WMM/WME: yes
MFP: no
TDLS peer: no
DTIM period: 2
beacon interval:1000
connected time: 536 seconds
But there is currently no documentation what the firmware requires (next to
the already existing things for AP/managed) to enable HE for mesh.
hwsim can be used in the meantime as basis for initial development of these
features without having access to HW.
Kind regards,
Sven
Sven Eckelmann (3):
mac80211_hwsim: Register support for HE meshpoint
mac80211: implement HE support for mesh
ath11k: register HE mesh capabilities
drivers/net/wireless/ath/ath11k/mac.c | 56 +++++
drivers/net/wireless/mac80211_hwsim.c | 283 +++++++++++++++++---------
include/net/cfg80211.h | 19 ++
net/mac80211/ieee80211_i.h | 2 +
net/mac80211/mesh.c | 61 ++++++
net/mac80211/mesh.h | 4 +
net/mac80211/mesh_plink.c | 11 +-
net/mac80211/util.c | 52 +++++
8 files changed, 393 insertions(+), 95 deletions(-)
--
2.20.1
