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From: Joanne Koong <joannelkoong@gmail.com>
To: bpf@vger.kernel.org
Cc: andrii@kernel.org, ast@kernel.org, daniel@iogearbox.net,
	Joanne Koong <joannelkoong@gmail.com>
Subject: [PATCH v1 bpf-next 0/5] Dynptr convenience helpers
Date: Sat,  8 Apr 2023 20:34:26 -0700	[thread overview]
Message-ID: <20230409033431.3992432-1-joannelkoong@gmail.com> (raw)

This patchset is the 3rd in the dynptr series. The 1st (dynptr
fundamentals) can be found here [0] and the second (skb + xdp dynptrs)
can be found here [1].

This patchset adds the following convenience helpers for interacting
with dynptrs:

int bpf_dynptr_trim(struct bpf_dynptr *ptr, __u32 len) __ksym;
int bpf_dynptr_advance(struct bpf_dynptr *ptr, __u32 len) __ksym;
int bpf_dynptr_is_null(const struct bpf_dynptr *ptr) __ksym;
int bpf_dynptr_is_rdonly(const struct bpf_dynptr *ptr) __ksym;
__u32 bpf_dynptr_get_size(const struct bpf_dynptr *ptr) __ksym;
__u32 bpf_dynptr_get_offset(const struct bpf_dynptr *ptr) __ksym;
int bpf_dynptr_clone(const struct bpf_dynptr *ptr, struct bpf_dynptr *clone__init) __ksym;

[0] https://lore.kernel.org/bpf/20220523210712.3641569-1-joannelkoong@gmail.com/
[1] https://lore.kernel.org/bpf/20230301154953.641654-1-joannelkoong@gmail.com/

Joanne Koong (5):
  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
  selftests/bpf: add tests for dynptr convenience helpers

 include/linux/bpf.h                           |   2 +-
 kernel/bpf/helpers.c                          | 108 +++++-
 kernel/bpf/verifier.c                         | 125 ++++++-
 kernel/trace/bpf_trace.c                      |   4 +-
 tools/testing/selftests/bpf/bpf_kfuncs.h      |   8 +
 .../testing/selftests/bpf/prog_tests/dynptr.c |   6 +
 .../testing/selftests/bpf/progs/dynptr_fail.c | 313 +++++++++++++++++
 .../selftests/bpf/progs/dynptr_success.c      | 320 ++++++++++++++++++
 8 files changed, 864 insertions(+), 22 deletions(-)

-- 
2.34.1


             reply	other threads:[~2023-04-09  3:34 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-09  3:34 Joanne Koong [this message]
2023-04-09  3:34 ` [PATCH v1 bpf-next 1/5] bpf: Add bpf_dynptr_trim and bpf_dynptr_advance Joanne Koong
2023-04-12 21:46   ` Andrii Nakryiko
2023-04-14  5:15     ` Joanne Koong
2023-04-17 23:35       ` Andrii Nakryiko
2023-04-19  6:22         ` Joanne Koong
2023-04-19 16:30           ` Andrii Nakryiko
2023-04-09  3:34 ` [PATCH v1 bpf-next 2/5] bpf: Add bpf_dynptr_is_null and bpf_dynptr_is_rdonly Joanne Koong
2023-04-12 21:50   ` Andrii Nakryiko
2023-04-20  6:45     ` Joanne Koong
2023-04-09  3:34 ` [PATCH v1 bpf-next 3/5] bpf: Add bpf_dynptr_get_size and bpf_dynptr_get_offset Joanne Koong
2023-04-12 21:52   ` Andrii Nakryiko
2023-04-14  5:17     ` Joanne Koong
2023-04-09  3:34 ` [PATCH v1 bpf-next 4/5] bpf: Add bpf_dynptr_clone Joanne Koong
2023-04-12 22:12   ` Andrii Nakryiko
2023-04-14  6:02     ` Joanne Koong
2023-04-17 23:46       ` Andrii Nakryiko
2023-04-19  6:56         ` Joanne Koong
2023-04-19 16:34           ` Andrii Nakryiko
2023-04-17 18:53   ` kernel test robot
2023-04-09  3:34 ` [PATCH v1 bpf-next 5/5] selftests/bpf: add tests for dynptr convenience helpers Joanne Koong
2023-04-12 21:48 ` [PATCH v1 bpf-next 0/5] Dynptr " Andrii Nakryiko

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