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| author | Willem de Bruijn <willemb@google.com> | 2020-03-03 23:05:01 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-03-04 03:23:59 +0300 |
| commit | cf62089b0edd7e74a1f474844b4d9f7b5697fb5c (patch) | |
| tree | 9daf8bfb7c74ff98ca4c507f8d5bf8184c4d7bec /include | |
| parent | abbc61a5f26d52a5d3abbbe552b275360b2c6631 (diff) | |
| download | linux-cf62089b0edd7e74a1f474844b4d9f7b5697fb5c.tar.xz | |
bpf: Add gso_size to __sk_buff
BPF programs may want to know whether an skb is gso. The canonical
answer is skb_is_gso(skb), which tests that gso_size != 0.
Expose this field in the same manner as gso_segs. That field itself
is not a sufficient signal, as the comment in skb_shared_info makes
clear: gso_segs may be zero, e.g., from dodgy sources.
Also prepare net/bpf/test_run for upcoming BPF_PROG_TEST_RUN tests
of the feature.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200303200503.226217-2-willemdebruijn.kernel@gmail.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/bpf.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 8e98ced0963b..180337fae97e 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -3176,6 +3176,7 @@ struct __sk_buff { __u32 wire_len; __u32 gso_segs; __bpf_md_ptr(struct bpf_sock *, sk); + __u32 gso_size; }; struct bpf_tunnel_key { |