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

Kumar Kartikeya Dwivedi
2021-06-20T23:33:37Z

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