From: Michal Sojka <sojkam1@fel.cvut.cz>
Date: Mon, 20 Jan 2014 09:17:02 +0000 (+0100)
Subject: Limit socket recv buf size - to not have so big latencies
X-Git-Tag: fix-allnoconfig~62
X-Git-Url: http://rtime.felk.cvut.cz/gitweb/can-benchmark.git/commitdiff_plain/f1ff4f1495b1684205e2780442acf5c63d978464

Limit socket recv buf size - to not have so big latencies
---

diff --git a/ugw/ugw.c b/ugw/ugw.c
index 243fc5a..876d9ce 100644
--- a/ugw/ugw.c
+++ b/ugw/ugw.c
@@ -104,6 +104,9 @@ void init_read(struct in_ctx *ctx)
 
 	s = CHECK(socket(PF_CAN, SOCK_RAW, CAN_RAW));
 
+	int rcvbuf = 25000;	/* Limit rcvbuf to not have so big queueing latencies */
+	CHECK(setsockopt(s, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof(rcvbuf)));
+
 	if (nonblocking) {
 		int flags = CHECK(fcntl(s, F_GETFL, 0));
 		CHECK(fcntl(s, F_SETFL, flags | O_NONBLOCK));