wifi: iwlwifi: disable multi rx queue for 9000
Multi rx queue allows to spread the load of the Rx streams on different CPUs. 9000 series required complex synchronization mechanisms from the driver side since the hardware / firmware is not able to provide information about duplicate packets and timeouts inside the reordering buffer. Users have complained that for newer devices, all those synchronization mechanisms have caused spurious packet drops. Those packet drops disappeared if we simplify the code, but unfortunately, we can't have RSS enabled on 9000 series without this complex code. Remove support for RSS on 9000 so that we can make the code much simpler for newer devices and fix the bugs for them. The down side of this patch is a that all the Rx path will be routed to a single CPU, but this has never been an issue, the modern CPUs are just fast enough to cope with all the traffic. Signed-off-by:Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by:
Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20231017115047.2917eb8b7af9.Iddd7dcf335387ba46fcbbb6067ef4ff9cd3755a7@changeid Signed-off-by:
Johannes Berg <johannes.berg@intel.com>
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ac139aa3
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