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authorJason A. Donenfeld <Jason@zx2c4.com>2021-02-22 19:25:45 +0300
committerJakub Kicinski <kuba@kernel.org>2021-02-24 02:54:07 +0300
commitd5a49aa6c3e264a93a7d08485d66e346be0969dd (patch)
treefeac64c95e48802fbe3d61cbb5f8821508bf254b /tools
parent7f57bd8dc22de35ddd895294aa554003e4f19a72 (diff)
downloadlinux-d5a49aa6c3e264a93a7d08485d66e346be0969dd.tar.xz
wireguard: selftests: test multiple parallel streams
In order to test ndo_start_xmit being called in parallel, explicitly add separate tests, which should all run on different cores. This should help tease out bugs associated with queueing up packets from different cores in parallel. Currently, it hasn't found those types of bugs, but given future planned work, this is a useful regression to avoid. Fixes: e7096c131e51 ("net: WireGuard secure network tunnel") Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools')
-rwxr-xr-xtools/testing/selftests/wireguard/netns.sh15
1 files changed, 14 insertions, 1 deletions
diff --git a/tools/testing/selftests/wireguard/netns.sh b/tools/testing/selftests/wireguard/netns.sh
index 74c69b75f6f5..7ed7cd95e58f 100755
--- a/tools/testing/selftests/wireguard/netns.sh
+++ b/tools/testing/selftests/wireguard/netns.sh
@@ -39,7 +39,7 @@ ip0() { pretty 0 "ip $*"; ip -n $netns0 "$@"; }
ip1() { pretty 1 "ip $*"; ip -n $netns1 "$@"; }
ip2() { pretty 2 "ip $*"; ip -n $netns2 "$@"; }
sleep() { read -t "$1" -N 1 || true; }
-waitiperf() { pretty "${1//*-}" "wait for iperf:5201 pid $2"; while [[ $(ss -N "$1" -tlpH 'sport = 5201') != *\"iperf3\",pid=$2,fd=* ]]; do sleep 0.1; done; }
+waitiperf() { pretty "${1//*-}" "wait for iperf:${3:-5201} pid $2"; while [[ $(ss -N "$1" -tlpH "sport = ${3:-5201}") != *\"iperf3\",pid=$2,fd=* ]]; do sleep 0.1; done; }
waitncatudp() { pretty "${1//*-}" "wait for udp:1111 pid $2"; while [[ $(ss -N "$1" -ulpH 'sport = 1111') != *\"ncat\",pid=$2,fd=* ]]; do sleep 0.1; done; }
waitiface() { pretty "${1//*-}" "wait for $2 to come up"; ip netns exec "$1" bash -c "while [[ \$(< \"/sys/class/net/$2/operstate\") != up ]]; do read -t .1 -N 0 || true; done;"; }
@@ -141,6 +141,19 @@ tests() {
n2 iperf3 -s -1 -B fd00::2 &
waitiperf $netns2 $!
n1 iperf3 -Z -t 3 -b 0 -u -c fd00::2
+
+ # TCP over IPv4, in parallel
+ for max in 4 5 50; do
+ local pids=( )
+ for ((i=0; i < max; ++i)) do
+ n2 iperf3 -p $(( 5200 + i )) -s -1 -B 192.168.241.2 &
+ pids+=( $! ); waitiperf $netns2 $! $(( 5200 + i ))
+ done
+ for ((i=0; i < max; ++i)) do
+ n1 iperf3 -Z -t 3 -p $(( 5200 + i )) -c 192.168.241.2 &
+ done
+ wait "${pids[@]}"
+ done
}
[[ $(ip1 link show dev wg0) =~ mtu\ ([0-9]+) ]] && orig_mtu="${BASH_REMATCH[1]}"