[PATCH bpf V6 0/5] XDP-hints: API change for RX-hash kfunc bpf_xdp_metadata_rx_hash

From: Jesper Dangaard Brouer
Date: Sun Apr 02 2023 - 04:30:42 EST


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 providing the RSS hash type.

---
V6:
- Resend: selftest failure is unrelated (in xdp_do_redirect)
Issue in fccca038f300 ("veth: take into account device reconfiguration for xdp_features flag")
V5:
- Fixes for checkpatch.pl
- Change function signature for all xmo_rx_hash calls

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 | 10 ++-
include/linux/mlx5/device.h | 14 ++++-
include/linux/netdevice.h | 3 +-
include/net/xdp.h | 47 ++++++++++++++
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, 180 insertions(+), 24 deletions(-)

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