* refactor out the rx filter and operating mode code into a separate
method.
* add some comments about what's left with setting the operating mode
based on what carl9170 does.
* comment out some init from otus_init_mac() - it's no longer needed as
it's always init'ed now.
* add debugging and a missing return around a failure to call m_get2() -
during monitor mode operation I found RXing of frames > 2k, which
fails allocation. I'm sure they're valid (it's configuring 11n RX and
receiving 11n frames even though the driver doesn't "do" 11n)
and may be A-MSDU; but allocations fail and we should handle that
gracefully.
Tested:
* UB82 reference NIC (AR9170 + AR9104 2x2 dual band NIC); STA and
monitor mode operation.
* Add a comment about the parameters I should support, stolen shamelessly
from iwn(4);
* Implement the rate bit for the raw transmit path;
* Print out the host-order versions of each of the transmit bits, so
I have a hope in heck of debugging why things are going wrong.
This still doesn't fix 5GHz in the office but that's likely due to a lot
of other configuration parameters being 2GHz-specific. That'll come next.
Tested:
* AR9170 + AR9103 (2/5GHz) 2x2, 5GHz association
* Use the correct malloc type for node allocation - M_80211_NODE - so
the default node free method in net80211 will work correctly.
* Fix otus_node_alloc() to suit FreeBSD's net80211.
* .. and actually call otus_node_alloc() so there's space for the
per-node tx statistics. Otherwise, well, it will be scribbling over
random memory.
Tested:
* AR9170, STA mode
The monitor mode stuff is from the openbsd driver, but it doesn't
100% work. It doesn't seem to get all frames for all BSSes.
However, it's enough to at start debugging things. That 0xffffffff
write is /I think/ the RX filter, but I am still not 100% sure about
it all.
Then, whilst here, use the lowest rate for EAPOL frames. This is just
generally a good thing to do.
This doesn't free the mbuf upon error; the driver ic_raw_xmit method is still
doing that.
Submitted by: <s3erios@gmail.com>
Differential Revision: https://reviews.freebsd.org/D3774
Fast-frames:
* include opt_wlan.h ; tsk to not doing it earlier;
* add a tx pending tracking counter for seeing how deep
the hardware TX queue is;
* add the frame aging code from if_ath;
* add fast-frames capability to the driver setup.
Bugs:
* free the buffers (and node references) before
detaching net80211 state. This prevents a use-after-free in
the node free path where we've destroyed net80211 underneath it.
Atheros.
Thanks to OpenBSD for providing a driver based on the original
Atheros open source driver circa 2008. This uses the early, pre-carl9170
atheros provided firmware.
It only supports 11bg at the moment. I've not tested it with 11a
(and so the TX rate control logic may be slightly wrong!) so if
you do have the dual-band version of this hardware please do let me know.
Tested:
* AR9170, TP-Link WN821N 2GHz.
TODO:
* Hook this up to a non-module build.
