target/linux/generic/backport-5.4/080-wireguard-0084-wireguard-selftests-tie-socket-waiting-to-target-pid.patch

   1 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
   2 From: "Jason A. Donenfeld" <Jason@zx2c4.com>
   3 Date: Tue, 4 Feb 2020 22:17:29 +0100
   4 Subject: [PATCH] wireguard: selftests: tie socket waiting to target pid
   5
   6 commit 88f404a9b1d75388225b1c67b6dd327cb2182777 upstream.
   7
   8 Without this, we wind up proceeding too early sometimes when the
   9 previous process has just used the same listening port. So, we tie the
  10 listening socket query to the specific pid we're interested in.
  11
  12 Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
  13 Signed-off-by: David S. Miller <davem@davemloft.net>
  14 Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
  15 ---
  16  tools/testing/selftests/wireguard/netns.sh | 17 ++++++++---------
  17  1 file changed, 8 insertions(+), 9 deletions(-)
  18
  19 --- a/tools/testing/selftests/wireguard/netns.sh
  20 +++ b/tools/testing/selftests/wireguard/netns.sh
  21 @@ -38,9 +38,8 @@ ip0() { pretty 0 "ip $*"; ip -n $netns0
  22  ip1() { pretty 1 "ip $*"; ip -n $netns1 "$@"; }
  23  ip2() { pretty 2 "ip $*"; ip -n $netns2 "$@"; }
  24  sleep() { read -t "$1" -N 1 || true; }
  25 -waitiperf() { pretty "${1//*-}" "wait for iperf:5201"; while [[ $(ss -N "$1" -tlp 'sport = 5201') != *iperf3* ]]; do sleep 0.1; done; }
  26 -waitncatudp() { pretty "${1//*-}" "wait for udp:1111"; while [[ $(ss -N "$1" -ulp 'sport = 1111') != *ncat* ]]; do sleep 0.1; done; }
  27 -waitncattcp() { pretty "${1//*-}" "wait for tcp:1111"; while [[ $(ss -N "$1" -tlp 'sport = 1111') != *ncat* ]]; do sleep 0.1; done; }
  28 +waitiperf() { pretty "${1//*-}" "wait for iperf:5201 pid $2"; while [[ $(ss -N "$1" -tlpH 'sport = 5201') != *\"iperf3\",pid=$2,fd=* ]]; do sleep 0.1; done; }
  29 +waitncatudp() { pretty "${1//*-}" "wait for udp:1111 pid $2"; while [[ $(ss -N "$1" -ulpH 'sport = 1111') != *\"ncat\",pid=$2,fd=* ]]; do sleep 0.1; done; }
  30  waitiface() { pretty "${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;"; }
  31
  32  cleanup() {
  33 @@ -119,22 +118,22 @@ tests() {
  34
  35         # TCP over IPv4
  36         n2 iperf3 -s -1 -B 192.168.241.2 &
  37 -       waitiperf $netns2
  38 +       waitiperf $netns2 $!
  39         n1 iperf3 -Z -t 3 -c 192.168.241.2
  40
  41         # TCP over IPv6
  42         n1 iperf3 -s -1 -B fd00::1 &
  43 -       waitiperf $netns1
  44 +       waitiperf $netns1 $!
  45         n2 iperf3 -Z -t 3 -c fd00::1
  46
  47         # UDP over IPv4
  48         n1 iperf3 -s -1 -B 192.168.241.1 &
  49 -       waitiperf $netns1
  50 +       waitiperf $netns1 $!
  51         n2 iperf3 -Z -t 3 -b 0 -u -c 192.168.241.1
  52
  53         # UDP over IPv6
  54         n2 iperf3 -s -1 -B fd00::2 &
  55 -       waitiperf $netns2
  56 +       waitiperf $netns2 $!
  57         n1 iperf3 -Z -t 3 -b 0 -u -c fd00::2
  58  }
  59
  60 @@ -207,7 +206,7 @@ n1 ping -W 1 -c 1 192.168.241.2
  61  n1 wg set wg0 peer "$pub2" allowed-ips 192.168.241.0/24
  62  exec 4< <(n1 ncat -l -u -p 1111)
  63  ncat_pid=$!
  64 -waitncatudp $netns1
  65 +waitncatudp $netns1 $ncat_pid
  66  n2 ncat -u 192.168.241.1 1111 <<<"X"
  67  read -r -N 1 -t 1 out <&4 && [[ $out == "X" ]]
  68  kill $ncat_pid
  69 @@ -216,7 +215,7 @@ n1 wg set wg0 peer "$more_specific_key"
  70  n2 wg set wg0 listen-port 9997
  71  exec 4< <(n1 ncat -l -u -p 1111)
  72  ncat_pid=$!
  73 -waitncatudp $netns1
  74 +waitncatudp $netns1 $ncat_pid
  75  n2 ncat -u 192.168.241.1 1111 <<<"X"
  76  ! read -r -N 1 -t 1 out <&4 || false
  77  kill $ncat_pid