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@xxxxxxxxx/
[1] https://lore.kernel.org/bpf/20220907183129.745846-1-joannelkoong@xxxxxxxxx/
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
