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| author |   Jakub Sitnicki <jakub@cloudflare.com> | 2022-01-30 12:55:18 +0100 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2022-01-31 12:39:12 -0800 |
| commit | 8f50f16ff39dd4e2d43d1548ca66925652f8aff7 (patch) | |
| tree | 7dd90826ccc6a7f26688e8f790140ff96e6b43ea /tools/include | |
| parent | bpf: Make dst_port field in struct bpf_sock 16-bit wide (diff) | |
| download | linux-dev-8f50f16ff39dd4e2d43d1548ca66925652f8aff7.tar.xz linux-dev-8f50f16ff39dd4e2d43d1548ca66925652f8aff7.zip | |
selftests/bpf: Extend verifier and bpf_sock tests for dst_port loads
Add coverage to the verifier tests and tests for reading bpf_sock fields to
ensure that 32-bit, 16-bit, and 8-bit loads from dst_port field are allowed
only at intended offsets and produce expected values.
While 16-bit and 8-bit access to dst_port field is straight-forward, 32-bit
wide loads need be allowed and produce a zero-padded 16-bit value for
backward compatibility.
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/r/20220130115518.213259-3-jakub@cloudflare.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/uapi/linux/bpf.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 4a2f7041ebae..a7f0ddedac1f 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -5574,7 +5574,8 @@ struct bpf_sock { __u32 src_ip4; __u32 src_ip6[4]; __u32 src_port; /* host byte order */ - __u32 dst_port; /* network byte order */ + __be16 dst_port; /* network byte order */ + __u16 :16; /* zero padding */ __u32 dst_ip4; __u32 dst_ip6[4]; __u32 state; |