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Commit 3f66116e authored by Alban Crequy's avatar Alban Crequy Committed by David S. Miller
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AF_UNIX: Implement SO_TIMESTAMP and SO_TIMETAMPNS on Unix sockets 



Userspace applications can already request to receive timestamps with:
setsockopt(sockfd, SOL_SOCKET, SO_TIMESTAMP, ...)

Although setsockopt() returns zero (success), timestamps are not added to the
ancillary data. This patch fixes that on SOCK_DGRAM and SOCK_SEQPACKET Unix
sockets.

Signed-off-by: default avatarAlban Crequy <alban.crequy@collabora.co.uk>
Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d6bf7817

net/unix/af_unix.c

+5 −0
Original line number Diff line number Diff line
@@ -1511,6 +1511,8 @@ static int unix_dgram_sendmsg(struct kiocb *kiocb, struct socket *sock, 
		goto restart;

	}



	if (sock_flag(other, SOCK_RCVTSTAMP))

		__net_timestamp(skb);

	skb_queue_tail(&other->sk_receive_queue, skb);

	unix_state_unlock(other);

	other->sk_data_ready(other, len);
@@ -1722,6 +1724,9 @@ static int unix_dgram_recvmsg(struct kiocb *iocb, struct socket *sock, 
	if (err)

		goto out_free;



	if (sock_flag(sk, SOCK_RCVTSTAMP))

		__sock_recv_timestamp(msg, sk, skb);



	if (!siocb->scm) {

		siocb->scm = &tmp_scm;

		memset(&tmp_scm, 0, sizeof(tmp_scm));