diff options
| author | David S. Miller <davem@davemloft.net> | 2019-07-25 17:35:03 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-25 17:35:03 -0700 |
| commit | 28ba934d28cf46c1ea92f6aff28e8d9ec52e194e (patch) | |
| tree | 821fd2b12068195842b6d95acf3c5eaac605fcd3 /include/linux/filter.h | |
| parent | 47d858d0bdcd47cc1c6c9eeca91b091dd9e55637 (diff) | |
| parent | cb8ffde5694ae5fffb456eae932aac442aa3a207 (diff) | |
| download | lwn-28ba934d28cf46c1ea92f6aff28e8d9ec52e194e.tar.gz lwn-28ba934d28cf46c1ea92f6aff28e8d9ec52e194e.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Alexei Starovoitov says:
====================
pull-request: bpf 2019-07-25
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) fix segfault in libbpf, from Andrii.
2) fix gso_segs access, from Eric.
3) tls/sockmap fixes, from Jakub and John.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/filter.h')
| -rw-r--r-- | include/linux/filter.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h index ff65d22cf336..92c6e31fb008 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -24,6 +24,7 @@ #include <net/sch_generic.h> +#include <asm/byteorder.h> #include <uapi/linux/filter.h> #include <uapi/linux/bpf.h> @@ -747,6 +748,18 @@ bpf_ctx_narrow_access_ok(u32 off, u32 size, u32 size_default) return size <= size_default && (size & (size - 1)) == 0; } +static inline u8 +bpf_ctx_narrow_load_shift(u32 off, u32 size, u32 size_default) +{ + u8 load_off = off & (size_default - 1); + +#ifdef __LITTLE_ENDIAN + return load_off * 8; +#else + return (size_default - (load_off + size)) * 8; +#endif +} + #define bpf_ctx_wide_access_ok(off, size, type, field) \ (size == sizeof(__u64) && \ off >= offsetof(type, field) && \ |