diff options
Diffstat (limited to 'net/core/sock.c')
| -rw-r--r-- | net/core/sock.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index 1e0f1c63ad6b..2714811afbd8 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -849,8 +849,17 @@ set_rcvbuf: break; } if (val & SOF_TIMESTAMPING_OPT_ID && - !(sk->sk_tsflags & SOF_TIMESTAMPING_OPT_ID)) - sk->sk_tskey = 0; + !(sk->sk_tsflags & SOF_TIMESTAMPING_OPT_ID)) { + if (sk->sk_protocol == IPPROTO_TCP) { + if (sk->sk_state != TCP_ESTABLISHED) { + ret = -EINVAL; + break; + } + sk->sk_tskey = tcp_sk(sk)->snd_una; + } else { + sk->sk_tskey = 0; + } + } sk->sk_tsflags = val; if (val & SOF_TIMESTAMPING_RX_SOFTWARE) sock_enable_timestamp(sk, |