blob: 002e5098f7514565630a9d23e397e046b6e4ef65 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
#!/bin/bash
# Configuration
PORT=4791
MODS=("tun" "rdma_rxe")
exec > /dev/null
# --- Helper: Cleanup Routine ---
cleanup() {
echo "Cleaning up resources..."
rdma link del rxe1 2>/dev/null
rdma link del rxe0 2>/dev/null
ip link del tun0 2>/dev/null
ip link del tun1 2>/dev/null
for m in "${MODS[@]}"; do modprobe -r "$m" 2>/dev/null; done
}
# Ensure cleanup runs on script exit or interrupt
trap cleanup EXIT
# --- Phase 1: Environment Check ---
if [[ $EUID -ne 0 ]]; then
echo "Error: This script must be run as root."
exit 1
fi
for m in "${MODS[@]}"; do
modprobe "$m" || { echo "Error: Failed to load $m"; exit 1; }
done
# --- Phase 2: Create Interfaces & RXE Links ---
echo "Creating tun0 (1.1.1.1) and rxe0..."
ip tuntap add mode tun tun0
ip addr add 1.1.1.1/24 dev tun0
ip link set tun0 up
rdma link add rxe0 type rxe netdev tun0
# Verify port 4791 is listening
if ! ss -Huln sport = :$PORT | grep -q ":$PORT"; then
echo "Error: UDP port $PORT not found after rxe0 creation"
exit 1
fi
echo "Creating tun1 (2.2.2.2) and rxe1..."
ip tuntap add mode tun tun1
ip addr add 2.2.2.2/24 dev tun1
ip link set tun1 up
rdma link add rxe1 type rxe netdev tun1
# Verify port 4791 is still listening
if ! ss -Huln sport = :$PORT | grep -q ":$PORT"; then
echo "Error: UDP port $PORT missing after rxe1 creation"
exit 1
fi
# --- Phase 3: Targeted Deletion ---
echo "Deleting rxe1..."
rdma link del rxe1
# Port should still be active because rxe0 is still alive
if ! ss -Huln sport = :$PORT | grep -q ":$PORT"; then
echo "Error: UDP port $PORT closed prematurely"
exit 1
fi
echo "Deleting rxe0..."
rdma link del rxe0
# Port should now be gone
if ss -Huln sport = :$PORT | grep -q ":$PORT"; then
echo "Error: UDP port $PORT still exists after all links deleted"
exit 1
fi
echo "Test passed successfully."
|
