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26e90931 AS |
1 | /* Copyright (c) 2016 Facebook |
2 | * | |
3 | * This program is free software; you can redistribute it and/or | |
4 | * modify it under the terms of version 2 of the GNU General Public | |
5 | * License as published by the Free Software Foundation. | |
6 | */ | |
7 | #include <linux/skbuff.h> | |
8 | #include <linux/netdevice.h> | |
9 | #include <linux/version.h> | |
10 | #include <uapi/linux/bpf.h> | |
11 | #include "bpf_helpers.h" | |
12 | ||
13 | #define MAX_ENTRIES 1000 | |
14 | ||
15 | struct bpf_map_def SEC("maps") hash_map = { | |
16 | .type = BPF_MAP_TYPE_HASH, | |
17 | .key_size = sizeof(u32), | |
18 | .value_size = sizeof(long), | |
19 | .max_entries = MAX_ENTRIES, | |
20 | }; | |
21 | ||
22 | struct bpf_map_def SEC("maps") percpu_hash_map = { | |
23 | .type = BPF_MAP_TYPE_PERCPU_HASH, | |
24 | .key_size = sizeof(u32), | |
25 | .value_size = sizeof(long), | |
26 | .max_entries = MAX_ENTRIES, | |
27 | }; | |
28 | ||
29 | struct bpf_map_def SEC("maps") hash_map_alloc = { | |
30 | .type = BPF_MAP_TYPE_HASH, | |
31 | .key_size = sizeof(u32), | |
32 | .value_size = sizeof(long), | |
33 | .max_entries = MAX_ENTRIES, | |
34 | .map_flags = BPF_F_NO_PREALLOC, | |
35 | }; | |
36 | ||
37 | struct bpf_map_def SEC("maps") percpu_hash_map_alloc = { | |
38 | .type = BPF_MAP_TYPE_PERCPU_HASH, | |
39 | .key_size = sizeof(u32), | |
40 | .value_size = sizeof(long), | |
41 | .max_entries = MAX_ENTRIES, | |
42 | .map_flags = BPF_F_NO_PREALLOC, | |
43 | }; | |
44 | ||
45 | SEC("kprobe/sys_getuid") | |
46 | int stress_hmap(struct pt_regs *ctx) | |
47 | { | |
48 | u32 key = bpf_get_current_pid_tgid(); | |
49 | long init_val = 1; | |
50 | long *value; | |
51 | ||
52 | bpf_map_update_elem(&hash_map, &key, &init_val, BPF_ANY); | |
53 | value = bpf_map_lookup_elem(&hash_map, &key); | |
54 | if (value) | |
55 | bpf_map_delete_elem(&hash_map, &key); | |
56 | return 0; | |
57 | } | |
58 | ||
59 | SEC("kprobe/sys_geteuid") | |
60 | int stress_percpu_hmap(struct pt_regs *ctx) | |
61 | { | |
62 | u32 key = bpf_get_current_pid_tgid(); | |
63 | long init_val = 1; | |
64 | long *value; | |
65 | ||
66 | bpf_map_update_elem(&percpu_hash_map, &key, &init_val, BPF_ANY); | |
67 | value = bpf_map_lookup_elem(&percpu_hash_map, &key); | |
68 | if (value) | |
69 | bpf_map_delete_elem(&percpu_hash_map, &key); | |
70 | return 0; | |
71 | } | |
72 | SEC("kprobe/sys_getgid") | |
73 | int stress_hmap_alloc(struct pt_regs *ctx) | |
74 | { | |
75 | u32 key = bpf_get_current_pid_tgid(); | |
76 | long init_val = 1; | |
77 | long *value; | |
78 | ||
79 | bpf_map_update_elem(&hash_map_alloc, &key, &init_val, BPF_ANY); | |
80 | value = bpf_map_lookup_elem(&hash_map_alloc, &key); | |
81 | if (value) | |
82 | bpf_map_delete_elem(&hash_map_alloc, &key); | |
83 | return 0; | |
84 | } | |
85 | ||
86 | SEC("kprobe/sys_getegid") | |
87 | int stress_percpu_hmap_alloc(struct pt_regs *ctx) | |
88 | { | |
89 | u32 key = bpf_get_current_pid_tgid(); | |
90 | long init_val = 1; | |
91 | long *value; | |
92 | ||
93 | bpf_map_update_elem(&percpu_hash_map_alloc, &key, &init_val, BPF_ANY); | |
94 | value = bpf_map_lookup_elem(&percpu_hash_map_alloc, &key); | |
95 | if (value) | |
96 | bpf_map_delete_elem(&percpu_hash_map_alloc, &key); | |
97 | return 0; | |
98 | } | |
99 | char _license[] SEC("license") = "GPL"; | |
100 | u32 _version SEC("version") = LINUX_VERSION_CODE; |