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75 lines
1.9 KiB
75 lines
1.9 KiB
#!/usr/bin/env python
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# Copyright (c) 2017 Facebook, Inc.
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# Licensed under the Apache License, Version 2.0 (the "License")
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import ctypes as ct
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import unittest
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from bcc import BPF
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from netaddr import IPAddress
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class KeyV4(ct.Structure):
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_fields_ = [("prefixlen", ct.c_uint),
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("data", ct.c_ubyte * 4)]
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class KeyV6(ct.Structure):
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_fields_ = [("prefixlen", ct.c_uint),
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("data", ct.c_ushort * 8)]
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class TestLpmTrie(unittest.TestCase):
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def test_lpm_trie_v4(self):
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test_prog1 = """
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BPF_LPM_TRIE(trie, u64, int, 16);
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"""
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b = BPF(text=test_prog1)
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t = b["trie"]
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k1 = KeyV4(24, (192, 168, 0, 0))
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v1 = ct.c_int(24)
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t[k1] = v1
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k2 = KeyV4(28, (192, 168, 0, 0))
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v2 = ct.c_int(28)
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t[k2] = v2
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k = KeyV4(32, (192, 168, 0, 15))
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self.assertEqual(t[k].value, 28)
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k = KeyV4(32, (192, 168, 0, 127))
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self.assertEqual(t[k].value, 24)
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with self.assertRaises(KeyError):
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k = KeyV4(32, (172, 16, 1, 127))
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v = t[k]
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def test_lpm_trie_v6(self):
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test_prog1 = """
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struct key_v6 {
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u32 prefixlen;
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u32 data[4];
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};
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BPF_LPM_TRIE(trie, struct key_v6, int, 16);
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"""
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b = BPF(text=test_prog1)
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t = b["trie"]
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k1 = KeyV6(64, IPAddress('2a00:1450:4001:814:200e::').words)
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v1 = ct.c_int(64)
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t[k1] = v1
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k2 = KeyV6(96, IPAddress('2a00:1450:4001:814::200e').words)
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v2 = ct.c_int(96)
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t[k2] = v2
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k = KeyV6(128, IPAddress('2a00:1450:4001:814::1024').words)
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self.assertEqual(t[k].value, 96)
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k = KeyV6(128, IPAddress('2a00:1450:4001:814:2046::').words)
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self.assertEqual(t[k].value, 64)
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with self.assertRaises(KeyError):
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k = KeyV6(128, IPAddress('2a00:ffff::').words)
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v = t[k]
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if __name__ == "__main__":
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unittest.main()
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