lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Tue, 28 Apr 2020 17:27:36 -0700
From:   Andrii Nakryiko <>
To:     <>, <>, <>,
        <>, <>
CC:     <>, <>,
        Andrii Nakryiko <>
Subject: [PATCH v3 bpf-next 0/3] Add BTF-defined map-in-map support to libbpf

This patch set teaches libbpf how to declare and initialize ARRAY_OF_MAPS and
HASH_OF_MAPS maps. See patch #3 for all the details.

Patch #1 refactors parsing BTF definition of map to re-use it cleanly for
inner map definition parsing.

Patch #2 refactors map creation and destruction logic for reuse. It also fixes
existing bug with not closing successfully created maps when bpf_object map
creation overall fails.

Patch #3 adds support for an extension of BTF-defined map syntax, as well as
parsing, recording, and use of relocations to allow declaratively initialize
outer maps with references to inner maps.

  - rename __inner to __array (Alexei).

Andrii Nakryiko (3):
  libbpf: refactor BTF-defined map definition parsing logic
  libbpf: refactor map creation logic and fix cleanup leak
  libbpf: add BTF-defined map-in-map support

 tools/lib/bpf/bpf_helpers.h                   |   1 +
 tools/lib/bpf/libbpf.c                        | 698 ++++++++++++------
 .../selftests/bpf/prog_tests/btf_map_in_map.c |  49 ++
 .../selftests/bpf/progs/test_btf_map_in_map.c |  76 ++
 4 files changed, 606 insertions(+), 218 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/btf_map_in_map.c
 create mode 100644 tools/testing/selftests/bpf/progs/test_btf_map_in_map.c


Powered by blists - more mailing lists