diff options
| author | Lawrence Brakmo <brakmo@fb.com> | 2018-01-25 16:14:09 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-01-25 16:41:14 -0800 |
| commit | de525be2ca2734865d29c4b67ddd29913b214906 (patch) | |
| tree | 85e7a4d4b7c45de053c1d9528c1849d65252edfa /include/uapi | |
| parent | b73042b8a28e2603ac178295ab96c876ba5a97a1 (diff) | |
bpf: Support passing args to sock_ops bpf function
Adds support for passing up to 4 arguments to sock_ops bpf functions. It
reusues the reply union, so the bpf_sock_ops structures are not
increased in size.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/bpf.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 406c19d6016b..8d5874c2c4ff 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -952,8 +952,9 @@ struct bpf_map_info { struct bpf_sock_ops { __u32 op; union { - __u32 reply; - __u32 replylong[4]; + __u32 args[4]; /* Optionally passed to bpf program */ + __u32 reply; /* Returned by bpf program */ + __u32 replylong[4]; /* Optionally returned by bpf prog */ }; __u32 family; __u32 remote_ip4; /* Stored in network byte order */ |