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 /net/core/sock_diag.c | |
| 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 'net/core/sock_diag.c')
| -rw-r--r-- | net/core/sock_diag.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/sock_diag.c b/net/core/sock_diag.c index 8d11ee75a100..fb9d0e2fd148 100644 --- a/net/core/sock_diag.c +++ b/net/core/sock_diag.c @@ -19,7 +19,7 @@ static int (*inet_rcv_compat)(struct sk_buff *skb, struct nlmsghdr *nlh); static DEFINE_MUTEX(sock_diag_table_mutex); static struct workqueue_struct *broadcast_wq; -static u64 sock_gen_cookie(struct sock *sk) +u64 sock_gen_cookie(struct sock *sk) { while (1) { u64 res = atomic64_read(&sk->sk_cookie); |