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| author | Alexei Starovoitov <ast@kernel.org> | 2026-02-04 13:22:40 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-02-04 13:23:35 -0800 |
| commit | b2821311abbd05d3340ad7f09fe89f088572b682 (patch) | |
| tree | 7cd5003a9c1361b74a280623464b22704415ddfd /include/linux | |
| parent | 4af526698b15ec6cb3c8ad8085335b1d55692f00 (diff) | |
| parent | 56415363e02f0f561ecc5bda6a4318438f888b43 (diff) | |
Merge branch 'bpf-add-bitwise-tracking-for-bpf_end'
Tianci Cao says:
====================
bpf: Add bitwise tracking for BPF_END
Add bitwise tracking (tnum analysis) for BPF_END (`bswap(16|32|64)`,
`be(16|32|64)`, `le(16|32|64)`) operations. Please see commit log of
1/2 for more details.
v3:
- Resend to fix a version control error in v2.
- The rest of the changes are identical to v2.
v2 (incorrect): https://lore.kernel.org/bpf/20260204091146.52447-1-ziye@zju.edu.cn/
- Refactored selftests using BSWAP_RANGE_TEST macro to eliminate code
duplication and improve maintainability. (Eduard)
- Simplified test names. (Eduard)
- Reduced excessive comments in test cases. (Eduard)
- Added more comments to explain BPF_END's special handling of zext_32_to_64.
v1: https://lore.kernel.org/bpf/20260202133536.66207-1-ziye@zju.edu.cn/
====================
Link: https://patch.msgid.link/20260204111503.77871-1-ziye@zju.edu.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/tnum.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/tnum.h b/include/linux/tnum.h index c52b862dad45..fa4654ffb621 100644 --- a/include/linux/tnum.h +++ b/include/linux/tnum.h @@ -63,6 +63,11 @@ struct tnum tnum_union(struct tnum t1, struct tnum t2); /* Return @a with all but the lowest @size bytes cleared */ struct tnum tnum_cast(struct tnum a, u8 size); +/* Swap the bytes of a tnum */ +struct tnum tnum_bswap16(struct tnum a); +struct tnum tnum_bswap32(struct tnum a); +struct tnum tnum_bswap64(struct tnum a); + /* Returns true if @a is a known constant */ static inline bool tnum_is_const(struct tnum a) { |