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author | Andrii Nakryiko <andrii@kernel.org> | 2021-08-15 00:13:33 -0700 |
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committer | Andrii Nakryiko <andrii@kernel.org> | 2021-08-15 00:19:10 -0700 |
commit | fa183a86eefd47188054974e67dff2b8e9012aba (patch) | |
tree | 79e57fa8095f7d37d9a0e41cf230c8727f548df5 /net/sched/cls_bpf.c | |
parent | d1bf7c4d5deae6685a42463f4d29418fd2515d05 (diff) | |
parent | ce547335d4a42e645320402b24aeadb39531f73c (diff) |
Merge branch 'BPF iterator for UNIX domain socket.'
Kuniyuki Iwashima says:
====================
This patch set adds BPF iterator support for UNIX domain socket. The first
patch implements it, and the second adds "%c" support for BPF_SEQ_PRINTF().
Thanks to Yonghong Song for the fix [0] for the LLVM code gen. The fix
prevents the LLVM compiler from transforming the loop exit condition '<' to
'!=', where the upper bound is not a constant. The transformation leads
the verifier to interpret it as an infinite loop.
And thanks to Andrii Nakryiko for its workaround [1].
[0] https://reviews.llvm.org/D107483
[1] https://lore.kernel.org/netdev/CAEf4BzZ3sVx1m1mOCcPcuVPiY6cWEAO=6VGHDiXEs9ZVD-RoLg@mail.gmail.com/
Changelog:
v6:
- Align the header "Inde" column
- Change int vars to __u64 not to break test_progs-no_alu32
- Move the if statement into the for loop not to depend on the fix [0]
- Drop the README change
- Modify "%c" positive test patterns
v5:
https://lore.kernel.org/netdev/20210812164557.79046-1-kuniyu@amazon.co.jp/
- Align header line of bpf_iter_unix.c
- Add test for "%c"
v4:
https://lore.kernel.org/netdev/20210810092807.13190-1-kuniyu@amazon.co.jp/
- Check IS_BUILTIN(CONFIG_UNIX)
- Support "%c" in BPF_SEQ_PRINTF()
- Uncomment the code to print the name of the abstract socket
- Mention the LLVM fix in README.rst
- Remove the 'aligned' attribute in bpf_iter.h
- Keep the format string on a single line
v3:
https://lore.kernel.org/netdev/20210804070851.97834-1-kuniyu@amazon.co.jp/
- Export some functions for CONFIG_UNIX=m
v2:
https://lore.kernel.org/netdev/20210803011110.21205-1-kuniyu@amazon.co.jp/
- Implement bpf_iter specific seq_ops->stop()
- Add bpf_iter__unix in bpf_iter.h
- Move common definitions in selftest to bpf_tracing_net.h
- Include the code for abstract UNIX domain socket as comment in selftest
- Use ASSERT_OK_PTR() instead of CHECK()
- Make ternary operators on single line
v1:
https://lore.kernel.org/netdev/20210729233645.4869-1-kuniyu@amazon.co.jp/
====================
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Diffstat (limited to 'net/sched/cls_bpf.c')
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