Merge branch 'nfp-ring-reconfig-and-xdp-support'
Jakub Kicinski says:
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ring reconfiguration and XDP support
This set adds support for ethtool channel API and XDP.
I kick off with ethtool get_channels() implementation.
set_channels() needs some preparations to get right. I follow
the prepare/commit paradigm and allocate all resources before
stopping the device. It has already been done for ndo_change_mtu
and ethtool set_ringparam(), it makes sense now to consolidate all
the required logic in one place.
XDP support requires splitting TX rings into two classes -
for the stack and for XDP. The ring structures are identical.
The differences are in how they are connected to IRQ vector
structs and how the completion/cleanup works. When XDP is enabled
I switch from the frag allocator to page-per-packet and map buffers
BIDIRECTIONALly.
Last but not least XDP offload is added (the patch just takes
care of the small formal differences between cls_bpf and XDP).
There is a tiny & trivial DebugFS patch in the mix, I hope it can
be taken via net-next provided we have the right Acks.
Resending with improved commit message and CCing more people on patch 10.
====================
Signed-off-by:
David S. Miller <davem@davemloft.net>
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