[Intel-wired-lan] [RFC v3 net-next 06/18] net: ipv4: udp: Hook into time based transmission.
Jesus Sanchez-Palencia
jesus.sanchez-palencia at intel.com
Wed Mar 7 01:12:18 UTC 2018
From: Richard Cochran <rcochran at linutronix.de>
For udp packets, copy the desired future transmit time from the CMSG
cookie into the skb.
Signed-off-by: Richard Cochran <rcochran at linutronix.de>
Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia at intel.com>
---
net/ipv4/udp.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 3013404d0935..d683bbde526b 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -926,6 +926,7 @@ int udp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
}
ipc.sockc.tsflags = sk->sk_tsflags;
+ ipc.sockc.transmit_time = 0;
ipc.addr = inet->inet_saddr;
ipc.oif = sk->sk_bound_dev_if;
@@ -1040,8 +1041,10 @@ int udp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
sizeof(struct udphdr), &ipc, &rt,
msg->msg_flags);
err = PTR_ERR(skb);
- if (!IS_ERR_OR_NULL(skb))
+ if (!IS_ERR_OR_NULL(skb)) {
+ skb->tstamp = ipc.sockc.transmit_time;
err = udp_send_skb(skb, fl4);
+ }
goto out;
}
--
2.16.2
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