From 5053858e6727444baca268e49385e2cc8d188fe6 Mon Sep 17 00:00:00 2001
From: Michael Tuexen <tuexen@fh-muenster.de>
Date: Sun, 8 Jan 2017 19:18:01 +0100
Subject: [PATCH] Integrate
https://github.com/google/packetdrill/commit/8544aa8ce6ad3c3c268903f586cc665b3afa7254
---
gtests/net/packetdrill/packet_socket_linux.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/gtests/net/packetdrill/packet_socket_linux.c b/gtests/net/packetdrill/packet_socket_linux.c
index 95e852bd..8abf1066 100644
--- a/gtests/net/packetdrill/packet_socket_linux.c
+++ b/gtests/net/packetdrill/packet_socket_linux.c
@@ -80,6 +80,8 @@ static void bind_to_interface(int fd, int interface_index)
*/
static void packet_socket_setup(struct packet_socket *psock)
{
+ struct timeval tv;
+
psock->packet_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
if (psock->packet_fd < 0)
die_perror("socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))");
@@ -92,6 +94,12 @@ static void packet_socket_setup(struct packet_socket *psock)
bind_to_interface(psock->packet_fd, psock->index);
set_receive_buffer_size(psock->packet_fd, PACKET_SOCKET_RCVBUF_BYTES);
+
+
+ /* Pay the non-trivial latency cost to enable timestamps now, before
+ * the test starts, to avoid significant delays in the middle of tests.
+ */
+ ioctl(psock->packet_fd, SIOCGSTAMP, &tv);
}
/* Add a filter so we only sniff packets we want. */
--
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