netdev - [PATCH bpf-next 0/2] nfp: bpf: add programmable RSS support

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Date:   Tue,  8 May 2018 19:37:05 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     alexei.starovoitov@...il.com, daniel@...earbox.net
Cc:     davem@...emloft.net, netdev@...r.kernel.org,
        oss-drivers@...ronome.com,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [PATCH bpf-next 0/2] nfp: bpf: add programmable RSS support

Hi!

This small series adds a feature which extends BPF offload beyond
a pure host processing offload and firmly into the realm of
heterogeneous processing.  Allowing offloaded XDP programs to set
the RX queue index opens the door for defining fully programmable
RSS/n-tuple filter replacement.  In fact the device datapath will
skip the RSS processing completely if BPF decided on the queue
already, making the XDP program replace part of the standard NIC
datapath.

We hope some day the entire NIC datapath will be defined by BPF :)

Jakub Kicinski (2):
  bpf: xdp: allow offloads to store into rx_queue_index
  nfp: bpf: support setting the RX queue index

 drivers/net/ethernet/netronome/nfp/bpf/fw.h   |  1 +
 drivers/net/ethernet/netronome/nfp/bpf/jit.c  | 47 +++++++++++++++++++
 drivers/net/ethernet/netronome/nfp/bpf/main.c | 11 +++++
 drivers/net/ethernet/netronome/nfp/bpf/main.h |  8 ++++
 .../net/ethernet/netronome/nfp/bpf/verifier.c | 28 ++++++++++-
 drivers/net/ethernet/netronome/nfp/nfp_asm.h  | 22 +++++----
 include/linux/bpf.h                           |  2 +-
 kernel/bpf/verifier.c                         |  2 +-
 net/core/filter.c                             |  9 +++-
 9 files changed, 115 insertions(+), 15 deletions(-)

-- 
2.17.0