[net-next,0/4] Generic XDP improvements

Message

Kumar Kartikeya Dwivedi June 20, 2021, 11:31 p.m. UTC

This small series makes some improvements to generic XDP mode and brings it
closer to native XDP. Patch 1 splits out generic XDP processing into reusable
parts, patch 2 implements generic cpumap support (details in commit) and patch 3
allows devmap bpf prog execution before generic_xdp_tx is called.

Patch 4 just updates a couple of selftests to adapt to changes in behavior (in
that specifying devmap/cpumap prog fd in generic mode is now allowed).

Kumar Kartikeya Dwivedi (4):
  net: core: split out code to run generic XDP prog
  net: implement generic cpumap
  bpf: devmap: implement devmap prog execution for generic XDP
  bpf: update XDP selftests to not fail with generic XDP

 include/linux/bpf.h                           |   8 +
 include/linux/netdevice.h                     |   2 +
 include/linux/skbuff.h                        |  10 +-
 kernel/bpf/cpumap.c                           | 151 ++++++++++++++++--
 kernel/bpf/devmap.c                           |  42 ++++-
 net/core/dev.c                                |  86 ++++++----
 net/core/filter.c                             |   6 +-
 .../bpf/prog_tests/xdp_cpumap_attach.c        |   4 +-
 .../bpf/prog_tests/xdp_devmap_attach.c        |   4 +-
 9 files changed, 255 insertions(+), 58 deletions(-)

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2.31.1