[PATCH bpf-next v8 0/2] bpftool: Use batch lookups for map dumps

[Tianyi Chen <hi@tychen.cc>]

Use batch lookups for map dumps and continue with individual lookups
from the last printed key after any batch error.

Changes in v8:
- Follow Alexei's simpler approach: use a 1 MiB buffer budget, remove
  buffer growth and error classes, and try batching for all map types.
- Count and fail bpftool's lookups in the selftest. Check plain and JSON
  output, including failures before and after the first batch.
- Drop Quentin's Acked-by on the rewritten patch.

Tested in an x86-64 VM: all 16 batch subtests pass; unpatched bpftool
fails all 16. The combination with the recursive series also passes.

v7: https://lore.kernel.org/r/cover.1793732386.git.hi@tychen.cc

Tianyi Chen (2):
  bpftool: Use batch lookups for map dumps
  selftests/bpf: Check bpftool batch map dumps

 tools/bpf/bpftool/map.c                       |  97 ++++++--
 .../bpf/prog_tests/bpftool_map_batch.c        | 228 ++++++++++++++++++
 .../selftests/bpf/progs/bpftool_map_batch.c   |  42 ++++
 3 files changed, 352 insertions(+), 15 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/bpftool_map_batch.c
 create mode 100644 tools/testing/selftests/bpf/progs/bpftool_map_batch.c


base-commit: 8fb43ffc3327d12d57d3fbe6f4820b5a522de0d1
-- 
2.56.0