[PATCH bpf-next v1 0/8] Dynptr convenience helpers

[Joanne Koong <joannelkoong@gmail.com>]

This patchset is the 3rd in the dynptr series. The 1st can be found here [0]
and the 2nd can be found here [1].

In this patchset, the following convenience helpers are added for interacting
with bpf dynamic pointers:

    * bpf_dynptr_data_rdonly
    * bpf_dynptr_trim
    * bpf_dynptr_advance
    * bpf_dynptr_is_null
    * bpf_dynptr_is_rdonly
    * bpf_dynptr_get_size
    * bpf_dynptr_get_offset
    * bpf_dynptr_clone
    * bpf_dynptr_iterator

[0] https://lore.kernel.org/bpf/20220523210712.3641569-1-joannelkoong@gmail.com/
[1] https://lore.kernel.org/bpf/20220907183129.745846-1-joannelkoong@gmail.com/

Joanne Koong (8):
  bpf: Add bpf_dynptr_data_rdonly
  bpf: Add bpf_dynptr_trim and bpf_dynptr_advance
  bpf: Add bpf_dynptr_is_null and bpf_dynptr_is_rdonly
  bpf: Add bpf_dynptr_get_size and bpf_dynptr_get_offset
  bpf: Add bpf_dynptr_clone
  bpf: Add verifier support for custom callback return range
  bpf: Add bpf_dynptr_iterator
  selftests/bpf: Tests for dynptr convenience helpers

 include/linux/bpf_verifier.h                  |   1 +
 include/uapi/linux/bpf.h                      | 120 ++++
 kernel/bpf/helpers.c                          | 231 +++++++-
 kernel/bpf/verifier.c                         | 155 +++--
 scripts/bpf_doc.py                            |   3 +
 tools/include/uapi/linux/bpf.h                | 120 ++++
 .../testing/selftests/bpf/prog_tests/dynptr.c |  30 +
 .../testing/selftests/bpf/progs/dynptr_fail.c | 462 +++++++++++++++
 .../selftests/bpf/progs/dynptr_success.c      | 551 +++++++++++++++++-
 9 files changed, 1617 insertions(+), 56 deletions(-)

-- 
2.30.2