add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/testing/selftests/wireguard/netns.sh
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@@ -502,10 +502,32 @@
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 n1 ping -W 1 -c 1 192.168.241.2
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 [[ $(n2 wg show wg0 endpoints) == "$pub1	10.0.0.3:1" ]]
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-ip1 link del veth1
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-ip1 link del veth3
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-ip1 link del wg0
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-ip2 link del wg0
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+ip1 link del dev veth3
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+ip1 link del dev wg0
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+ip2 link del dev wg0
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+
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+# Make sure persistent keep alives are sent when an adapter comes up
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+ip1 link add dev wg0 type wireguard
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+n1 wg set wg0 private-key <(echo "$key1") peer "$pub2" endpoint 10.0.0.1:1 persistent-keepalive 1
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+read _ _ tx_bytes < <(n1 wg show wg0 transfer)
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+[[ $tx_bytes -eq 0 ]]
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+ip1 link set dev wg0 up
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+read _ _ tx_bytes < <(n1 wg show wg0 transfer)
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+[[ $tx_bytes -gt 0 ]]
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+ip1 link del dev wg0
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+# This should also happen even if the private key is set later
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+ip1 link add dev wg0 type wireguard
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+n1 wg set wg0 peer "$pub2" endpoint 10.0.0.1:1 persistent-keepalive 1
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+read _ _ tx_bytes < <(n1 wg show wg0 transfer)
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+[[ $tx_bytes -eq 0 ]]
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+ip1 link set dev wg0 up
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+read _ _ tx_bytes < <(n1 wg show wg0 transfer)
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+[[ $tx_bytes -eq 0 ]]
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+n1 wg set wg0 private-key <(echo "$key1")
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+read _ _ tx_bytes < <(n1 wg show wg0 transfer)
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+[[ $tx_bytes -gt 0 ]]
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+ip1 link del dev veth1
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+ip1 link del dev wg0
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 # We test that Netlink/IPC is working properly by doing things that usually cause split responses
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 ip0 link add dev wg0 type wireguard