From: Amir Vadai <[email protected]>
Date: Tue, 4 Aug 2015 14:05:39 +0300
> This patchset introduces two features to the ConnectX-4 driver: Patch 8/8
> ("Support physical port counters") exposes some hardware counters through
> ethtool. Rest of the patches are preparation and usage of what we call
> light-weight netdev open/close. Some flows that used to be in the
> ndo_open/stop
> are moved to the PCI probe/remove flows - i.e. we will make the netdev
> open/close operations more "light-weight".
>
> The benefits of this change are:
> 1) Reduce the execution time of the stop/open operations.
> 2) Avoid saving SW shadows of resource configurations that must
> persist through stop/open operations (e.g flow table steering
> rules), and avoid deleting/applying them from/to the device upon
> netdev stop/open.
> 3) Avoid synchronizing threads that access those resources with the
> netdev stop/open threads.
>
> Instead of create/destroy the resource during netdev open/stop, This patchset
> changes the behavior such that upon netdev stop, traffic is redirected to a
> "Drop RQ" (a RQ that silently drops, at the NIC HW level all incoming
> traffic).
> After redirecting the traffic, RX/TX software resources could be destroyed.
> During netdev open, the RX/TX rings are created and traffic is redirected to
> the RX rings.
>
> Patchset was applied and tested over commit ba7591d ("ebpf: add skb->hash to
> offset map for usage in {cls, act}_bpf or filters")
Series applied, thanks.
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