[bpf-next,v1,0/3] Add XDP support for bpf_load_hdr_opt

Message

Joanne Koong Oct. 1, 2021, 9:58 p.m. UTC

Currently, bpf_sockops programs have been using bpf_load_hdr_opt() to
parse the tcp header option. It will be useful to allow other bpf prog
types to have a similar way of handling tcp hdr options.

This series adds XDP support for bpf_load_hdr_opt(). At a high level,
these patches are:

1/3 patch - Add functionality for xdp bpf_load_hdr_opt in net/core.

2/3 patch - Rename existing test_tcp_hdr_options to test_sockops_tcp_hdr_options.

3/3 patch - Add tests for xdp bpf_load_hdr_opt (test_xdp_tcp_hdr_options).

Joanne Koong (3):
  bpf/xdp: Add bpf_load_hdr_opt support for xdp
  bpf/selftests: Rename test_tcp_hdr_options to
    test_sockops_tcp_hdr_options
  bpf/selftests: Add xdp bpf_load_tcp_hdr_options tests

 include/uapi/linux/bpf.h                      |  26 ++-
 net/core/filter.c                             |  88 ++++++--
 tools/include/uapi/linux/bpf.h                |  26 ++-
 ...dr_options.c => sockops_tcp_hdr_options.c} |  18 +-
 .../bpf/prog_tests/xdp_tcp_hdr_options.c      | 158 ++++++++++++++
 ....c => test_sockops_misc_tcp_hdr_options.c} |   0
 ...tions.c => test_sockops_tcp_hdr_options.c} |   0
 .../bpf/progs/test_xdp_tcp_hdr_options.c      | 198 ++++++++++++++++++
 8 files changed, 468 insertions(+), 46 deletions(-)
 rename tools/testing/selftests/bpf/prog_tests/{tcp_hdr_options.c => sockops_tcp_hdr_options.c} (96%)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/xdp_tcp_hdr_options.c
 rename tools/testing/selftests/bpf/progs/{test_misc_tcp_hdr_options.c => test_sockops_misc_tcp_hdr_options.c} (100%)
 rename tools/testing/selftests/bpf/progs/{test_tcp_hdr_options.c => test_sockops_tcp_hdr_options.c} (100%)
 create mode 100644 tools/testing/selftests/bpf/progs/test_xdp_tcp_hdr_options.c