diff options
| author | Chenbo Feng <fengc@google.com> | 2017-03-22 17:27:34 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-23 17:01:02 -0700 |
| commit | 91b8270f2a4d1d9b268de90451cdca63a70052d6 (patch) | |
| tree | cca836d388f189d98179ab3dc51d1afbffa0a6e9 /include/linux/sock_diag.h | |
| parent | 16ae1f223601c44e5cb65c99257ffae003504704 (diff) | |
Add a helper function to get socket cookie in eBPF
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>
Diffstat (limited to 'include/linux/sock_diag.h')
| -rw-r--r-- | include/linux/sock_diag.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sock_diag.h b/include/linux/sock_diag.h index a0596ca0e80a..a2f8109bb215 100644 --- a/include/linux/sock_diag.h +++ b/include/linux/sock_diag.h @@ -24,6 +24,7 @@ void sock_diag_unregister(const struct sock_diag_handler *h); void sock_diag_register_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh)); void sock_diag_unregister_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh)); +u64 sock_gen_cookie(struct sock *sk); int sock_diag_check_cookie(struct sock *sk, const __u32 *cookie); void sock_diag_save_cookie(struct sock *sk, __u32 *cookie); |