[PATCH bpf RFC-V3 0/5] XDP-hints: API change for RX-hash kfunc bpf_xdp_metadata_rx_hash

Jesper Dangaard Brouer
2023-03-30T17:08:45Z

Notice targeted 6.3-rc kernel via bpf git tree.

Current API for bpf_xdp_metadata_rx_hash() returns the raw RSS hash value,
but doesn't provide information on the RSS hash type (part of 6.3-rc).

This patchset proposal is to change the function call signature via adding
a pointer value argument for provide the RSS hash type.

Alternatively we disable bpf_xdp_metadata_rx_hash() in 6.3-rc, and have
more time to nitpick the RSS hash-type bits.

---

Jesper Dangaard Brouer (5):
xdp: rss hash types representation
mlx5: bpf_xdp_metadata_rx_hash add xdp rss hash type
veth: bpf_xdp_metadata_rx_hash add xdp rss hash type
mlx4: bpf_xdp_metadata_rx_hash add xdp rss hash type
selftests/bpf: Adjust bpf_xdp_metadata_rx_hash for new arg

drivers/net/ethernet/mellanox/mlx4/en_rx.c | 22 ++++++-
drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 3 +-
.../net/ethernet/mellanox/mlx5/core/en/xdp.c | 63 ++++++++++++++++++-
drivers/net/veth.c | 11 +++-
include/linux/mlx5/device.h | 14 ++++-
include/linux/netdevice.h | 3 +-
include/net/xdp.h | 49 +++++++++++++++
net/core/xdp.c | 10 ++-
.../selftests/bpf/prog_tests/xdp_metadata.c | 2 +
.../selftests/bpf/progs/xdp_hw_metadata.c | 14 +++--
.../selftests/bpf/progs/xdp_metadata.c | 6 +-
.../selftests/bpf/progs/xdp_metadata2.c | 7 ++-
tools/testing/selftests/bpf/xdp_hw_metadata.c | 2 +-
tools/testing/selftests/bpf/xdp_metadata.h | 1 +
14 files changed, 183 insertions(+), 24 deletions(-)

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