From: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Date: Thu, 31 May 2018 13:42:38 +0900
Subject: selftests/bpf: test_sockmap, timing improvements
Patch-mainline: v4.18-rc1
Git-commit: a009f1f396d04a700971586ce8a142ea606cbb61
References: bsc#1109837

Currently 10us delay is too low for many tests to succeed. It needs to
be increased. Also, many corked tests are expected to hit rx timeout
irrespective of timeout value.

- This patch sets 1000usec timeout value for corked tests because less
than that causes broken-pipe error in tx thread. Also sets 1 second
timeout for all other tests because less than that results in RX
timeout
- tests with apply=1 and higher number of iterations were taking lot
of time. This patch reduces test run time by reducing iterations.

real    0m12.968s
user    0m0.219s
sys     0m14.337s

Fixes: a18fda1a62c3 ("bpf: reduce runtime of test_sockmap tests")
Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 tools/testing/selftests/bpf/test_sockmap.c |   13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

--- a/tools/testing/selftests/bpf/test_sockmap.c
+++ b/tools/testing/selftests/bpf/test_sockmap.c
@@ -345,8 +345,13 @@ static int msg_loop(int fd, int iov_coun
 		if (err < 0)
 			perror("recv start time: ");
 		while (s->bytes_recvd < total_bytes) {
-			timeout.tv_sec = 0;
-			timeout.tv_usec = 10;
+			if (txmsg_cork) {
+				timeout.tv_sec = 0;
+				timeout.tv_usec = 1000;
+			} else {
+				timeout.tv_sec = 1;
+				timeout.tv_usec = 0;
+			}
 
 			/* FD sets */
 			FD_ZERO(&w);
@@ -1025,14 +1030,14 @@ static int test_send(struct sockmap_opti
 
 	opt->iov_length = 1;
 	opt->iov_count = 1;
-	opt->rate = 1024;
+	opt->rate = 512;
 	err = test_exec(cgrp, opt);
 	if (err)
 		goto out;
 
 	opt->iov_length = 256;
 	opt->iov_count = 1024;
-	opt->rate = 10;
+	opt->rate = 2;
 	err = test_exec(cgrp, opt);
 	if (err)
 		goto out;