Here is an interesting change (in my opinion)
“added support for 0 and less tx-power for wireless;”
Can someone maybe explain what and why and where you’d use less than 0 tx-power?
For short links, so you don’t make more noise for other systems than necessary. If you are only hoping across the street, there is no need to be heard by systems a mile away.
Or, to feed high-gain antennas, so that you stay within EIRP limits.
The goal is to use as little power as necessary to provide a solid link with a good fade margin, which sometimes means going into negative dBm on TX.
This allows for greater frequency re-use (by reducing the volume of the RF colistion domains), which leads to a higher potential aggregate throughput in a given volume of space.
–Eric