| From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 |
| From: "Jason A. Donenfeld" <Jason@zx2c4.com> |
| Date: Mon, 22 Feb 2021 17:25:45 +0100 |
| Subject: [PATCH] wireguard: selftests: test multiple parallel streams |
| |
| commit d5a49aa6c3e264a93a7d08485d66e346be0969dd upstream. |
| |
| 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> |
| Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
| --- |
| tools/testing/selftests/wireguard/netns.sh | 15 ++++++++++++++- |
| 1 file changed, 14 insertions(+), 1 deletion(-) |
| |
| --- 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]}" |