netdev - [PATCH RFC bpf-next 0/3] BPF FS mount options parsing follow ups

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Date: Thu, 7 Dec 2023 14:27:52 -0800
From: Andrii Nakryiko <andrii@...nel.org>
To: <bpf@...r.kernel.org>, <netdev@...r.kernel.org>, <paul@...l-moore.com>,
        <brauner@...nel.org>
CC: <linux-fsdevel@...r.kernel.org>, <linux-security-module@...r.kernel.org>,
        <keescook@...omium.org>, <kernel-team@...a.com>, <sargun@...gun.me>
Subject: [PATCH RFC bpf-next 0/3] BPF FS mount options parsing follow ups

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 is an RFC patch set and I've only converted bpf_cmd enum to be generated
through reusable mapper macro. If the consensus is that this approach is the
way to go, adding similar support for three remaining enums is just a matter
of mundane mechanical conversion in UAPI header. Kernel-side logic for all
delegate_xxx mount options is completely generic already as implemented in
patch #1.

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

Andrii Nakryiko (3):
  bpf: add mapper macro for bpf_cmd enum
  bpf: extend parsing logic for BPF FS delegate_cmds mount option
  selftests/bpf: utilize string values for delegate_xxx mount options

 include/uapi/linux/bpf.h                      |  81 +++++------
 kernel/bpf/inode.c                            | 127 +++++++++++++-----
 tools/include/uapi/linux/bpf.h                |  81 +++++------
 .../testing/selftests/bpf/prog_tests/token.c  |  43 +++---
 4 files changed, 208 insertions(+), 124 deletions(-)

-- 
2.34.1