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.

Signed-off-by: Alban Crequy <alban.crequy@collabora.co.uk>
---
 net/unix/af_unix.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 617bea4..142ccea 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1697,6 +1697,8 @@ static int unix_dgram_recvmsg(struct kiocb *iocb, struct socket *sock,
 	if (err)
 		goto out_free;
 
+	sock_recv_timestamp(msg, sk, skb);
+
 	if (!siocb->scm) {
 		siocb->scm = &tmp_scm;
 		memset(&tmp_scm, 0, sizeof(tmp_scm));
@@ -1877,6 +1879,8 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
 		copied += chunk;
 		size -= chunk;
 
+		sock_recv_timestamp(msg, sk, skb);
+
 		/* Mark read part of skb as used */
 		if (!(flags & MSG_PEEK)) {
 			skb_pull(skb, chunk);
-- 
1.7.1

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