On 10/23/2017 01:30 PM, Johannes Berg wrote:
Hi,
I have been poking at ath10k to get some CSI reporting working.
The CSI reports are a bit over 2k bytes in length, and they could
happen quite often. As far as I can tell, there is no good way in
the kernel to make this available.
I was thinking maybe a callback into the mac80211 stack, which would
then send a netlink event might be a useful way to implement this?
The CSI data has variable length [1] but it's fundamentally always tied
to a specific frame and as such we've always attached it to that frame
using a radiotap vendor namespace.
You can easily implement that in a mac80211 driver since it has support
for that via RX_FLAG_RADIOTAP_VENDOR_DATA and the associated struct
ieee80211_vendor_radiotap that you put into the skb's head.
Why should anything else be needed?
So this would only show up in user-space in something like a pkt-capture?
Thanks,
Ben
--
Ben Greear <gree...@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
