can: isotp: isotp_recvmsg(): use sock_recv_cmsgs() to get SOCK_RXQ_OVFL infos

BugLink: https://bugs.launchpad.net/bugs/2016879
commit 0145462fc802cd447ef5d029758043c7f15b4b1e upstream.

isotp.c was still using sock_recv_timestamp() which does not provide
control messages to detect dropped PDUs in the receive path.

Fixes: e057dd3fc20f ("can: add ISO 15765-2:2016 transport protocol")
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/all/20230330170248.62342-1-socketcan@hartkopp.net
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>

diff --git a/net/can/isotp.c b/net/can/isotp.c
index 6d377b1630b835f793b2cb6a41f1851837e3acb5..5761d4ab839dd9776f072ba9ce78ac969defc97d 100644 (file)
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -1125,7 +1125,7 @@ static int isotp_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
        if (ret < 0)
                goto out_err;
 
-       sock_recv_timestamp(msg, sk, skb);
+       sock_recv_cmsgs(msg, sk, skb);
 
        if (msg->msg_name) {
                __sockaddr_check_size(ISOTP_MIN_NAMELEN);