FreeBSD src
f1481c8d3b
The later firmware devices (including iwn!) support multiple configuration contexts for a lot of things, leaving it up to the firmware to decide which channel and vap is active. This allows for things like off-channel p2p sta/ap operation and other weird things. However, net80211 is still focused on a "net80211 drives all" when it comes to driving the NIC, and as part of this history a lot of these options are global and not per-VAP. This is fine when net80211 drives things and all VAPs share a single channel - these parameters importantly really reflect the state of the channel! - but it will increasingly be not fine when we start supporting more weird configurations and more recent NICs. Yeah, recent like iwn/iwm. Anyway - so, migrate all of the HT protection, legacy protection and preamble stuff to be per-VAP. The global flags are still there; they're now calculated in a deferred taskqueue that mirrors the old behaviour. Firmware based drivers which have per-VAP configuration of these parameters can now just listen to the per-VAP options. What do I mean by per-channel? Well, the above configuration parameters really are about interoperation with other devices on the same channel. Eg, HT protection mode will flip to legacy/mixed if it hears ANY BSS that supports non-HT stations or indicates it has non-HT stations associated. So, these flags really should be per-channel rather than per-VAP, and then for things like "do i need short preamble or long preamble?" turn into a "do I need it for this current operating channel". Then any VAP using it can query the channel that it's on, reflecting the real required state. This patch does none of the above paragraph just yet. I'm also cheating a bit - I'm currently not using separate taskqueues for the beacon updates and the per-VAP configuration updates. I can always further split it later if I need to but I didn't think it was SUPER important here. So: * Create vap taskqueue entries for ERP/protection, HT protection and short/long preamble; * Migrate the HT station count, short/long slot station count, etc - into per-VAP variables rather than global; * Fix a bug with my WME work from a while ago which made it per-VAP - do the WME beacon update /after/ the WME update taskqueue runs, not before; * Any time the HT protmode configuration changes or the ERP protection mode config changes - schedule the task, which will call the driver without the net80211 lock held and all correctly serialised; * Use the global flags for beacon IEs and VAP flags for probe responses and other IE situations. The primary consumer of this is ath10k. iwn could use it when sending RXON, but we don't support IBSS or AP modes on it yet, and I'm not yet sure whether it's required in STA mode (ie whether the firmware parses beacons to change protection mode or whether we need to.) Tested: * AR9280, STA/AP * AR9380, DWDS STA+STA/AP * ath10k work, STA/AP * Intel 6235, STA * Various rtwn / run NICs, DWDS STA and STA configurations |
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| crypto | ||
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| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| stand | ||
| sys | ||
| targets | ||
| tests | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| .arcconfig | ||
| .arclint | ||
| .cirrus.yml | ||
| .clang-format | ||
| .gitattributes | ||
| .gitignore | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| Makefile.libcompat | ||
| Makefile.sys.inc | ||
| ObsoleteFiles.inc | ||
| README | ||
| README.md | ||
| RELNOTES | ||
| UPDATING | ||
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