[Intel-wired-lan] [next-queue 06/10] ixgbe: restore offloaded SAs after a reset

[Shannon Nelson]

On 12/7/2017 1:52 PM, Alexander Duyck wrote:
> 
> The reads/writes themselves should be cheap. These kind of things only
> get to be really expensive when you start looking at adding delays in
> between the writes/reads polling on things. As long as we aren't
> waiting milliseconds on things you can write/read thousands of
> registers and not even notice it.
> 
> One thing you might look at doing in order to speed some of this up a
> bit would be to also combine updating the Tx SA and Rx SA in your
> clear_hw_tables loop so that you could do them in parallel in your
> loop instead of having to do them in series. Anyway it is just a
> thought. If nothing else you might look at timing the function to see
> how long it actually takes. I suspect it shouldn't be too long since
> the turnaround time on the PCIe bus should be in microseconds so odds
> are reading/writing 35K registers might ovinly add a few milliseconds
> to total reset time.
> 

Good ideas - thanks,
sln