#!/usr/bin/env python
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# Copyright (c) PLUMgrid, Inc.
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# Licensed under the Apache License, Version 2.0 (the "License")
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from bcc import BPF
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import os
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import sys
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from unittest import main, TestCase
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class TestKprobeRgx(TestCase):
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def setUp(self):
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self.b = BPF(text=b"""
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typedef struct { int idx; } Key;
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typedef struct { u64 val; } Val;
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BPF_HASH(stats, Key, Val, 3);
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int hello(void *ctx) {
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stats.lookup_or_init(&(Key){1}, &(Val){0})->val++;
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return 0;
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}
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int goodbye(void *ctx) {
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stats.lookup_or_init(&(Key){2}, &(Val){0})->val++;
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return 0;
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}
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""")
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self.b.attach_kprobe(event_re=b"^" + self.b.get_syscall_prefix() + b"bp.*",
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fn_name=b"hello")
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self.b.attach_kretprobe(event_re=b"^" + self.b.get_syscall_prefix() + b"bp.*",
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fn_name=b"goodbye")
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def test_send1(self):
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k1 = self.b[b"stats"].Key(1)
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k2 = self.b[b"stats"].Key(2)
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self.assertTrue(self.b[b"stats"][k1].val >= 2)
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self.assertTrue(self.b[b"stats"][k2].val == 1)
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class TestKprobeReplace(TestCase):
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def setUp(self):
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self.b = BPF(text=b"int empty(void *ctx) { return 0; }")
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def test_periods(self):
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self.b.attach_kprobe(event_re=b"^tcp_enter_cwr.*", fn_name=b"empty")
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if __name__ == "__main__":
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main()
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