This is a follow-up to discussion around the idea of making dst_port in struct bpf_sock a 16-bit field that happened in [1]. v2: - use an anonymous field for zero padding (Alexei) v1: - keep dst_field offset unchanged to prevent existing BPF program breakage (Martin) - allow 8-bit loads from dst_port[0] and [1] - add test coverage for the verifier and the context access converter [1] https://lore.kernel.org/bpf/87sftbobys.fsf@xxxxxxxxxxxxxx/ Jakub Sitnicki (2): bpf: Make dst_port field in struct bpf_sock 16-bit wide selftests/bpf: Extend verifier and bpf_sock tests for dst_port loads include/uapi/linux/bpf.h | 3 +- net/core/filter.c | 10 ++- tools/include/uapi/linux/bpf.h | 3 +- .../selftests/bpf/prog_tests/sock_fields.c | 58 +++++++++---- .../selftests/bpf/progs/test_sock_fields.c | 41 ++++++++++ tools/testing/selftests/bpf/verifier/sock.c | 81 ++++++++++++++++++- 6 files changed, 173 insertions(+), 23 deletions(-) -- 2.31.1
