netdev - [PATCH net 2/4] can: isotp: isotp_recvmsg(): use sock_recv_cmsgs() to get SOCK_RXQ

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Message-Id: <20230405092444.1802340-3-mkl@pengutronix.de>
Date:   Wed,  5 Apr 2023 11:24:42 +0200
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, linux-can@...r.kernel.org,
        kernel@...gutronix.de, Oliver Hartkopp <socketcan@...tkopp.net>,
        stable@...r.kernel.org, Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH net 2/4] can: isotp: isotp_recvmsg(): use sock_recv_cmsgs() to get SOCK_RXQ_OVFL infos

From: Oliver Hartkopp <socketcan@...tkopp.net>

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@...tkopp.net>
Link: https://lore.kernel.org/all/20230330170248.62342-1-socketcan@hartkopp.net
Cc: stable@...r.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 net/can/isotp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/can/isotp.c b/net/can/isotp.c
index 9bc344851704..47c2ebad10ed 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -1120,7 +1120,7 @@ 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);
-- 
2.39.2