| From: |
| Stanislav Fomichev <sdf-AT-google.com> |
| To: |
| bpf-AT-vger.kernel.org |
| Subject: |
| [RFC net-next v4 0/8] xsk: TX metadata |
| Date: |
| Mon, 24 Jul 2023 16:59:49 -0700 |
| Message-ID: |
| <20230724235957.1953861-1-sdf@google.com> |
| Cc: |
| ast-AT-kernel.org, daniel-AT-iogearbox.net, andrii-AT-kernel.org, martin.lau-AT-linux.dev, song-AT-kernel.org, yhs-AT-fb.com, john.fastabend-AT-gmail.com, kpsingh-AT-kernel.org, sdf-AT-google.com, haoluo-AT-google.com, jolsa-AT-kernel.org, kuba-AT-kernel.org, toke-AT-kernel.org, willemb-AT-google.com, dsahern-AT-kernel.org, magnus.karlsson-AT-intel.com, bjorn-AT-kernel.org, maciej.fijalkowski-AT-intel.com, hawk-AT-kernel.org, netdev-AT-vger.kernel.org, xdp-hints-AT-xdp-project.net |
| Archive-link: |
| Article |
This series implements initial TX metadata (offloads) for AF_XDP.
See patch #2 for the main implementation and mlx5-one for the
example on how to consume the metadata on the device side.
With v4, I'm switching from BPF hooks and kfuncs to a fixed TX
metadata/offload format: the metadata is passed with every tx
umem chunk and it's up to the device driver to interpret it.
Starting with two types of offloads:
- request TX timestamp (and write it back into the metadata area)
- request TX checksum offload
TODO for the non-RFC series:
- have some real device support to verify xdp_hw_metadata works
- Documentation/networking/xdp-rx-metadata.rst - like documentation
v3: https://lore.kernel.org/bpf/20230707193006.1309662-1-sdf@...
Stanislav Fomichev (8):
xsk: Support XDP_TX_METADATA_LEN
xsk: add TX timestamp and TX checksum offload support
net/mlx5e: Implement AF_XDP TX timestamp and checksum offload
tools: ynl: update netdev sample to dump xsk-features
selftests/xsk: Support XDP_TX_METADATA_LEN
selftests/bpf: Add csum helpers
selftests/bpf: Add TX side to xdp_metadata
selftests/bpf: Add TX side to xdp_hw_metadata
Documentation/netlink/specs/netdev.yaml | 25 ++-
drivers/net/ethernet/mellanox/mlx5/core/en.h | 4 +-
.../net/ethernet/mellanox/mlx5/core/en/xdp.c | 71 ++++++-
.../net/ethernet/mellanox/mlx5/core/en/xdp.h | 10 +-
.../ethernet/mellanox/mlx5/core/en/xsk/tx.c | 9 +-
.../net/ethernet/mellanox/mlx5/core/en_main.c | 1 +
include/linux/netdevice.h | 27 +++
include/linux/skbuff.h | 5 +-
include/net/xdp_sock.h | 61 ++++++
include/net/xdp_sock_drv.h | 13 ++
include/net/xsk_buff_pool.h | 1 +
include/uapi/linux/if_xdp.h | 36 ++++
include/uapi/linux/netdev.h | 15 ++
net/core/netdev-genl.c | 12 +-
net/xdp/xsk.c | 58 +++++
net/xdp/xsk_buff_pool.c | 1 +
net/xdp/xsk_queue.h | 19 +-
tools/include/uapi/linux/if_xdp.h | 50 ++++-
tools/include/uapi/linux/netdev.h | 15 ++
tools/net/ynl/generated/netdev-user.c | 25 +++
tools/net/ynl/generated/netdev-user.h | 5 +
tools/net/ynl/samples/netdev.c | 8 +
tools/testing/selftests/bpf/network_helpers.h | 43 ++++
.../selftests/bpf/prog_tests/xdp_metadata.c | 31 ++-
tools/testing/selftests/bpf/xdp_hw_metadata.c | 201 +++++++++++++++++-
tools/testing/selftests/bpf/xsk.c | 17 ++
tools/testing/selftests/bpf/xsk.h | 1 +
27 files changed, 718 insertions(+), 46 deletions(-)
--
2.41.0.487.g6d72f3e995-goog
