Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== 802.11ac (Wi-Fi 5) todo ====== This is a placeholder page to plan out what's required for 11ac support. * (done) Channel representation - right now we have an array of all valid channel combinations (11b, 11g, 11a, 11n/ht20, 11n/ht40) that have pointers thrown around. For 802.11ac there's 20, 40, 80, 80+80 and 160MHz wide channels - this is a lot of combinations to represent in the current schema. * (done) VHT IE parsing. * (done) Figure out channel upgrade. * Figure out a structured rate representation - right now it's uint8_t which has some clashes between pre-11n and 11n rates. For 11ac there's only 9 MCS rates but then it's multiplied by the number of streams, and some devices have very complicated combinations of rate information. We should likely create a rate_t struct type and start using it in places. * (done) Parse VHT IEs in 'ifconfig -v list scan' * (done) Add VHTINFO as a flag in 'ifconfig list scan' (like HTINFO) - this is a scan capability flag ('CAPS') and list. * Figure out what else is missing for basic 11ac negotiation and support. * Figure out the differences in the 802.11ac %%QoS%% field (2 bytes); it looks slightly different to 802.11 / 802.11n. * Add VHT basic rate population, parsing and checks for assocation * Add opmode handling * MU-MIMO / group-id management * Add 11ac action frame handling * Add callbacks for 11n/11ac status changes, ERP, etc, so firmware-based chips can update things as appropriate * Hostap * Packet injection * IBSS * 11s ===== New configuration options to handle ===== * dot11OperatingClassesRequired * ===== IEs to handle ===== * 8.4.1.50 operating mode IE and operating mode field * 8.4.1.51 - membership status array field * 8.4.1.54 - user position array field * 8.4.2.3 - update supported rates element, include HT/VHT as appropriate for mandatory support * 8.4.2.10 - country IE - changes depending upon dot11OperatingClassesRequired * 8.4.2.17 - power capability IE * 8.4.2.22 - secondary channel offset element * 8.4.2.23 - measurement request element (the whole thing, as well as vht) * 8.4.2.23.5 - channel load request element, would be nice * 8.4.2.24 - measurement report element * 8.4.2.27 - RSNE; adding GCMP * 8.4.2.29 - extended capabilities bitmap/support - TDLS, %%OpModeNotification%%, Max MSDUs in A-MSDU * 8.4.2.31 - EDCA changes based on PHY * 8.4.2.38 - AP channel report element * 8.4.2.39 - Neighbor report element * 8.4.2.40 - RCPI * 8.4.2.48 - multiple BSSID * 8.4.2.56 - supported operating classes * 8.4.2.57 - Management MIC * 8.4.2.58 - HT capabilities element - need to ensure we're up to date on these + VHT bits * 8.4.2.69 - Event Request (p2p, right?) * 8.4.2.71 - Diagnostic Request * 8.4.2.73 - Location Parameters * (some others we don't really need) * 8.4.2.88 Channel Usage element * 8.4.2.160 VHT Capabilities element * 8.4.2.161 VHT Operation element * 8.4.2.162 Extended BSS Load element * 8.4.2.163 Wide Bandwidth Channel Switch element (in CSAs, extended CSAs, TDLS channel switch request frames) * 8.4.2.164 VHT Transmit Power Envelope element * 8.4.2.165 Channel Switch Wrapper element * 8.4.2.166 AID element * 8.4.2.167 Quiet Channel element * 8.4.2.168 Operating Mode Notification element ===== New Action Frames ===== * 8.5.2.6 Channel Switch Announcement frame format - changed for VHT * 8.5.4 - DLS (TDLS?; we don't do this yet) * 8.5.8.7 Extended Channel Switch Announcement frame format * (all the TDLS stuff) * 8.5.14.24 Channel Usage Response frame format * (all the mesh stuff) * 8.5.23.1 VHT Action field - compressed beamforming, group-id management, operating mode notification * 8.5.23.2 VHT Compressed Beamforming frame format * 8.5.23.3 Group ID Management frame format (MU-MIMO?) * 8.5.23.4 Operating Mode Notification frame format (At pg 118, section 9 at this point) * wifi/80211ac.txt Last modified: 2021/01/11 17:23by EdMaste