sorry, when I was saying 'the cpu', I was meaning the main one running linux,
not something that's part of the wifi chipset.
I would be very surprised if the wifi chipset is doing any packet routing, as
opposed to just sending the packets to the main processor.
Remember, the common case isn't forwarding from one wifi device to another, it's
moving between wifi devices and the wired uplink.
David Lang
On Tue, 22 Nov 2022, Bob McMahon wrote:
An AP's radio complex may have a CPU but that doesn't mean it is the
standard linux stack as most think of it. Many consider this as part of
"firmware" which can be Linux, a Linux derivative or other. Also, there
are some levels of wired/wireless forwarding plane integration done at the
hardware level that many might be surprised by.
Bob
On Tue, Nov 22, 2022 at 12:03 PM David Lang <[email protected]> wrote:
On Tue, 22 Nov 2022, Bob McMahon via Make-wifi-fast wrote:
Finally, many (most?) APs are forwarding and feeding packets at at the
hardware level so not sure that the linux stack matters as much for an AP
based analysis, particularly when considering multi user transmissions,
i.e. multiple WiFi clients are active and sharing TXOPs.
APs forward packets within the switch at the hardware level, but the
radios have
to go through the CPU, so any wired <-> wireless needs to go through the
CPU,
and I would be incredibly surprised if the wifi chips did wireless <->
wireless
routing at the hardware level.
David Lang
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