diff options
Diffstat (limited to 'net/socket.c')
| -rw-r--r-- | net/socket.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/net/socket.c b/net/socket.c index cf18c5eb592e..a7bd0df115b2 100644 --- a/net/socket.c +++ b/net/socket.c @@ -585,6 +585,35 @@ int kernel_sendmsg(struct socket *sock, struct msghdr *msg, return result; } +/* + * called from sock_recv_timestamp() if sock_flag(sk, SOCK_RCVTSTAMP) + */ +void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk, + struct sk_buff *skb) +{ + ktime_t kt = skb->tstamp; + + if (!sock_flag(sk, SOCK_RCVTSTAMPNS)) { + struct timeval tv; + /* Race occurred between timestamp enabling and packet + receiving. Fill in the current time for now. */ + if (kt.tv64 == 0) + kt = ktime_get_real(); + skb->tstamp = kt; + tv = ktime_to_timeval(kt); + put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMP, sizeof(tv), &tv); + } else { + struct timespec ts; + /* Race occurred between timestamp enabling and packet + receiving. Fill in the current time for now. */ + if (kt.tv64 == 0) + kt = ktime_get_real(); + skb->tstamp = kt; + ts = ktime_to_timespec(kt); + put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMPNS, sizeof(ts), &ts); + } +} + static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size, int flags) { |