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Date: Fri, 6 Mar 2020 21:29:45 +0100
From: Florian Westphal <fw@...len.de>
To: <netdev@...r.kernel.org>
Cc: Florian Westphal <fw@...len.de>
Subject: [PATCH net-next 1/2] mptcp: selftests: add rcvbuf set option
allows to run the tests with fixed receive buffer by passing
"-R <value>" to mptcp_connect.sh.
While at it, add a default 10 second poll timeout so the "-t"
becomes optional -- this makes mptcp_connect simpler to use
during manual testing.
Signed-off-by: Florian Westphal <fw@...len.de>
---
.../selftests/net/mptcp/mptcp_connect.c | 45 ++++++++++++++-----
.../selftests/net/mptcp/mptcp_connect.sh | 24 +++++++---
2 files changed, 54 insertions(+), 15 deletions(-)
diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.c b/tools/testing/selftests/net/mptcp/mptcp_connect.c
index 99579c0223c1..702bab2c12da 100644
--- a/tools/testing/selftests/net/mptcp/mptcp_connect.c
+++ b/tools/testing/selftests/net/mptcp/mptcp_connect.c
@@ -34,8 +34,8 @@ extern int optind;
#define TCP_ULP 31
#endif
+static int poll_timeout = 10 * 1000;
static bool listen_mode;
-static int poll_timeout;
enum cfg_mode {
CFG_MODE_POLL,
@@ -50,11 +50,20 @@ static int cfg_sock_proto = IPPROTO_MPTCP;
static bool tcpulp_audit;
static int pf = AF_INET;
static int cfg_sndbuf;
+static int cfg_rcvbuf;
static void die_usage(void)
{
- fprintf(stderr, "Usage: mptcp_connect [-6] [-u] [-s MPTCP|TCP] [-p port] -m mode]"
- "[ -l ] [ -t timeout ] connect_address\n");
+ fprintf(stderr, "Usage: mptcp_connect [-6] [-u] [-s MPTCP|TCP] [-p port] [-m mode]"
+ "[-l] connect_address\n");
+ fprintf(stderr, "\t-6 use ipv6\n");
+ fprintf(stderr, "\t-t num -- set poll timeout to num\n");
+ fprintf(stderr, "\t-S num -- set SO_SNDBUF to num\n");
+ fprintf(stderr, "\t-R num -- set SO_RCVBUF to num\n");
+ fprintf(stderr, "\t-p num -- use port num\n");
+ fprintf(stderr, "\t-m [MPTCP|TCP] -- use tcp or mptcp sockets\n");
+ fprintf(stderr, "\t-s [mmap|poll] -- use poll (default) or mmap\n");
+ fprintf(stderr, "\t-u -- check mptcp ulp\n");
exit(1);
}
@@ -97,6 +106,17 @@ static void xgetaddrinfo(const char *node, const char *service,
}
}
+static void set_rcvbuf(int fd, unsigned int size)
+{
+ int err;
+
+ err = setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &size, sizeof(size));
+ if (err) {
+ perror("set SO_RCVBUF");
+ exit(1);
+ }
+}
+
static void set_sndbuf(int fd, unsigned int size)
{
int err;
@@ -704,6 +724,8 @@ int main_loop(void)
check_getpeername_connect(fd);
+ if (cfg_rcvbuf)
+ set_rcvbuf(fd, cfg_rcvbuf);
if (cfg_sndbuf)
set_sndbuf(fd, cfg_sndbuf);
@@ -745,7 +767,7 @@ int parse_mode(const char *mode)
return 0;
}
-int parse_sndbuf(const char *size)
+static int parse_int(const char *size)
{
unsigned long s;
@@ -765,16 +787,14 @@ int parse_sndbuf(const char *size)
die_usage();
}
- cfg_sndbuf = s;
-
- return 0;
+ return (int)s;
}
static void parse_opts(int argc, char **argv)
{
int c;
- while ((c = getopt(argc, argv, "6lp:s:hut:m:b:")) != -1) {
+ while ((c = getopt(argc, argv, "6lp:s:hut:m:S:R:")) != -1) {
switch (c) {
case 'l':
listen_mode = true;
@@ -802,8 +822,11 @@ static void parse_opts(int argc, char **argv)
case 'm':
cfg_mode = parse_mode(optarg);
break;
- case 'b':
- cfg_sndbuf = parse_sndbuf(optarg);
+ case 'S':
+ cfg_sndbuf = parse_int(optarg);
+ break;
+ case 'R':
+ cfg_rcvbuf = parse_int(optarg);
break;
}
}
@@ -831,6 +854,8 @@ int main(int argc, char *argv[])
if (fd < 0)
return 1;
+ if (cfg_rcvbuf)
+ set_rcvbuf(fd, cfg_rcvbuf);
if (cfg_sndbuf)
set_sndbuf(fd, cfg_sndbuf);
diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.sh b/tools/testing/selftests/net/mptcp/mptcp_connect.sh
index d573a0feb98d..acf02e156d20 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_connect.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_connect.sh
@@ -3,7 +3,7 @@
time_start=$(date +%s)
-optstring="b:d:e:l:r:h4cm:"
+optstring="S:R:d:e:l:r:h4cm:"
ret=0
sin=""
sout=""
@@ -19,6 +19,7 @@ tc_loss=$((RANDOM%101))
tc_reorder=""
testmode=""
sndbuf=0
+rcvbuf=0
options_log=true
if [ $tc_loss -eq 100 ];then
@@ -39,7 +40,8 @@ usage() {
echo -e "\t-e: ethtool features to disable, e.g.: \"-e tso -e gso\" (default: randomly disable any of tso/gso/gro)"
echo -e "\t-4: IPv4 only: disable IPv6 tests (default: test both IPv4 and IPv6)"
echo -e "\t-c: capture packets for each test using tcpdump (default: no capture)"
- echo -e "\t-b: set sndbuf value (default: use kernel default)"
+ echo -e "\t-S: set sndbuf value (default: use kernel default)"
+ echo -e "\t-R: set rcvbuf value (default: use kernel default)"
echo -e "\t-m: test mode (poll, sendfile; default: poll)"
}
@@ -73,11 +75,19 @@ while getopts "$optstring" option;do
"c")
capture=true
;;
- "b")
+ "S")
if [ $OPTARG -ge 0 ];then
sndbuf="$OPTARG"
else
- echo "-s requires numeric argument, got \"$OPTARG\"" 1>&2
+ echo "-S requires numeric argument, got \"$OPTARG\"" 1>&2
+ exit 1
+ fi
+ ;;
+ "R")
+ if [ $OPTARG -ge 0 ];then
+ rcvbuf="$OPTARG"
+ else
+ echo "-R requires numeric argument, got \"$OPTARG\"" 1>&2
exit 1
fi
;;
@@ -342,8 +352,12 @@ do_transfer()
port=$((10000+$TEST_COUNT))
TEST_COUNT=$((TEST_COUNT+1))
+ if [ "$rcvbuf" -gt 0 ]; then
+ extra_args="$extra_args -R $rcvbuf"
+ fi
+
if [ "$sndbuf" -gt 0 ]; then
- extra_args="$extra_args -b $sndbuf"
+ extra_args="$extra_args -S $sndbuf"
fi
if [ -n "$testmode" ]; then
--
2.24.1
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