[PATCH v2 bpf-next 0/2] BPF FS mount options parsing follow ups

[Andrii Nakryiko <andrii@kernel.org>]

Original BPF token patch set ([0]) added delegate_xxx mount options which
supported only special "any" value and hexadecimal bitmask. This patch set
attempts to make specifying and inspecting these mount options more
human-friendly by supporting string constants matching corresponding bpf_cmd,
bpf_map_type, bpf_prog_type, and bpf_attach_type enumerators.

This implementation relies on BTF information to find all supported symbolic
names. If kernel wasn't built with BTF, BPF FS will still support "any" and
hex-based mask.

  [0] https://patchwork.kernel.org/project/netdevbpf/list/?series=805707&state=*

v1->v2:
  - strip BPF_, BPF_MAP_TYPE_, and BPF_PROG_TYPE_ prefixes,
    do case-insensitive comparison, normalize to lower case (Alexei).

Andrii Nakryiko (2):
  bpf: support symbolic BPF FS delegation mount options
  selftests/bpf: utilize string values for delegate_xxx mount options

 kernel/bpf/inode.c                            | 249 +++++++++++++++---
 .../testing/selftests/bpf/prog_tests/token.c  |  52 ++--
 2 files changed, 243 insertions(+), 58 deletions(-)

-- 
2.34.1