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