netdev - [PATCH bpf-next v2 0/4] samples: bpf: refactor BPF map test with libbpf

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Date:   Wed,  8 Jul 2020 03:48:51 +0900
From:   "Daniel T. Lee" <danieltimlee@...il.com>
To:     Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Yonghong Song <yhs@...com>, Martin KaFai Lau <kafai@...com>,
        Andrii Nakryiko <andriin@...com>,
        Andrii Nakryiko <andrii.nakryiko@...il.com>
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org
Subject: [PATCH bpf-next v2 0/4] samples: bpf: refactor BPF map test with libbpf

There have been many changes in how the current bpf program defines
map. The development of libbbpf has led to the new method called 
BTF-defined map, which is a new way of defining BPF maps, and thus has
a lot of differences from the existing MAP definition method.

Although bpf_load was also internally using libbbpf, fragmentation in 
its implementation began to occur, such as using its own structure, 
bpf_load_map_def, to define the map.

Therefore, in this patch set, map test programs, which are closely
related to changes in the definition method of BPF map, were refactored
with libbbpf.

---
Changes in V2:
 - instead of changing event from __x64_sys_connect to __sys_connect,
 fetch and set register values directly
 - fix wrong error check logic with bpf_program
 - set numa_node 0 declaratively at map definition instead of setting it
 from user-space
 - static initialization of ARRAY_OF_MAPS element with '.values'

Daniel T. Lee (4):
  samples: bpf: fix bpf programs with kprobe/sys_connect event
  samples: bpf: refactor BPF map in map test with libbpf
  samples: bpf: refactor BPF map performance test with libbpf
  selftests: bpf: remove unused bpf_map_def_legacy struct

 samples/bpf/Makefile                     |   2 +-
 samples/bpf/map_perf_test_kern.c         | 188 ++++++++++++-----------
 samples/bpf/map_perf_test_user.c         | 164 +++++++++++++-------
 samples/bpf/test_map_in_map_kern.c       |  94 ++++++------
 samples/bpf/test_map_in_map_user.c       |  53 ++++++-
 samples/bpf/test_probe_write_user_kern.c |   9 +-
 tools/testing/selftests/bpf/bpf_legacy.h |  14 --
 7 files changed, 305 insertions(+), 219 deletions(-)

-- 
2.25.1