diff options
| author | Chenbo Feng <fengc@google.com> | 2017-03-22 17:27:34 -0700 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2022-04-19 00:51:38 +0300 |
| commit | 7b8bf634ea1a7114d8929692860ef57d49ec7dc8 (patch) | |
| tree | c74a1cf5235b33e4c0e620f34660dccb73814f0d /include/uapi/linux/bpf.h | |
| parent | fcca68dd4382c7b2e5846fcd24617f05393aedc4 (diff) | |
BACKPORT: UPSTREAM: Add a helper function to get socket cookie in eBPF
Cherrypick from commit: 91b8270f2a4d1d9b268de90451cdca63a70052d6
Retrieve the socket cookie generated by sock_gen_cookie() from a sk_buff
with a known socket. Generates a new cookie if one was not yet set.If
the socket pointer inside sk_buff is NULL, 0 is returned. The helper
function coud be useful in monitoring per socket networking traffic
statistics and provide a unique socket identifier per namespace.
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Chenbo Feng <fengc@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bug: 30950746
Change-Id: I95918dcc3ceffb3061495a859d28aee88e3cde3c
Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
Diffstat (limited to 'include/uapi/linux/bpf.h')
| -rw-r--r-- | include/uapi/linux/bpf.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 8054fca7be09..92803fd8467d 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -534,6 +534,15 @@ enum bpf_func_id { */ BPF_FUNC_probe_read_str, + /** + * u64 bpf_bpf_get_socket_cookie(skb) + * Get the cookie for the socket stored inside sk_buff. + * @skb: pointer to skb + * Return: 8 Bytes non-decreasing number on success or 0 if the socket + * field is missing inside sk_buff + */ + BPF_FUNC_get_socket_cookie, + __BPF_FUNC_MAX_ID, }; |