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 "vmlinux.h"
8 #include <errno.h>
9 #include <linux/version.h>
10 #include <bpf/bpf_helpers.h>
11 #include <bpf/bpf_tracing.h>
12 #include <bpf/bpf_core_read.h>
13
14 #define MAX_ENTRIES 1000
15 #define MAX_NR_CPUS 1024
16
17 struct {
18 __uint(type, BPF_MAP_TYPE_HASH);
19 __type(key, u32);
20 __type(value, long);
21 __uint(max_entries, MAX_ENTRIES);
22 } hash_map SEC(".maps");
23
24 struct {
25 __uint(type, BPF_MAP_TYPE_LRU_HASH);
26 __type(key, u32);
27 __type(value, long);
28 __uint(max_entries, 10000);
29 } lru_hash_map SEC(".maps");
30
31 struct {
32 __uint(type, BPF_MAP_TYPE_LRU_HASH);
33 __type(key, u32);
34 __type(value, long);
35 __uint(max_entries, 10000);
36 __uint(map_flags, BPF_F_NO_COMMON_LRU);
37 } nocommon_lru_hash_map SEC(".maps");
38
39 struct inner_lru {
40 __uint(type, BPF_MAP_TYPE_LRU_HASH);
41 __type(key, u32);
42 __type(value, long);
43 __uint(max_entries, MAX_ENTRIES);
44 __uint(map_flags, BPF_F_NUMA_NODE);
45 __uint(numa_node, 0);
46 } inner_lru_hash_map SEC(".maps");
47
48 struct {
49 __uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
50 __uint(max_entries, MAX_NR_CPUS);
51 __uint(key_size, sizeof(u32));
52 __array(values, struct inner_lru); /* use inner_lru as inner map */
53 } array_of_lru_hashs SEC(".maps") = {
54 /* statically initialize the first element */
55 .values = { &inner_lru_hash_map },
56 };
57
58 struct {
59 __uint(type, BPF_MAP_TYPE_PERCPU_HASH);
60 __uint(key_size, sizeof(u32));
61 __uint(value_size, sizeof(long));
62 __uint(max_entries, MAX_ENTRIES);
63 } percpu_hash_map SEC(".maps");
64
65 struct {
66 __uint(type, BPF_MAP_TYPE_HASH);
67 __type(key, u32);
68 __type(value, long);
69 __uint(max_entries, MAX_ENTRIES);
70 __uint(map_flags, BPF_F_NO_PREALLOC);
71 } hash_map_alloc SEC(".maps");
72
73 struct {
74 __uint(type, BPF_MAP_TYPE_PERCPU_HASH);
75 __uint(key_size, sizeof(u32));
76 __uint(value_size, sizeof(long));
77 __uint(max_entries, MAX_ENTRIES);
78 __uint(map_flags, BPF_F_NO_PREALLOC);
79 } percpu_hash_map_alloc SEC(".maps");
80
81 struct {
82 __uint(type, BPF_MAP_TYPE_LPM_TRIE);
83 __uint(key_size, 8);
84 __uint(value_size, sizeof(long));
85 __uint(max_entries, 10000);
86 __uint(map_flags, BPF_F_NO_PREALLOC);
87 } lpm_trie_map_alloc SEC(".maps");
88
89 struct {
90 __uint(type, BPF_MAP_TYPE_ARRAY);
91 __type(key, u32);
92 __type(value, long);
93 __uint(max_entries, MAX_ENTRIES);
94 } array_map SEC(".maps");
95
96 struct {
97 __uint(type, BPF_MAP_TYPE_LRU_HASH);
98 __type(key, u32);
99 __type(value, long);
100 __uint(max_entries, MAX_ENTRIES);
101 } lru_hash_lookup_map SEC(".maps");
102
103 SEC("ksyscall/getuid")
104 int BPF_KSYSCALL(stress_hmap)
105 {
106 u32 key = bpf_get_current_pid_tgid();
107 long init_val = 1;
108 long *value;
109 int i;
110
111 for (i = 0; i < 10; i++) {
112 bpf_map_update_elem(&hash_map, &key, &init_val, BPF_ANY);
113 value = bpf_map_lookup_elem(&hash_map, &key);
114 if (value)
115 bpf_map_delete_elem(&hash_map, &key);
116 }
117
118 return 0;
119 }
120
121 SEC("ksyscall/geteuid")
122 int BPF_KSYSCALL(stress_percpu_hmap)
123 {
124 u32 key = bpf_get_current_pid_tgid();
125 long init_val = 1;
126 long *value;
127 int i;
128
129 for (i = 0; i < 10; i++) {
130 bpf_map_update_elem(&percpu_hash_map, &key, &init_val, BPF_ANY);
131 value = bpf_map_lookup_elem(&percpu_hash_map, &key);
132 if (value)
133 bpf_map_delete_elem(&percpu_hash_map, &key);
134 }
135 return 0;
136 }
137
138 SEC("ksyscall/getgid")
139 int BPF_KSYSCALL(stress_hmap_alloc)
140 {
141 u32 key = bpf_get_current_pid_tgid();
142 long init_val = 1;
143 long *value;
144 int i;
145
146 for (i = 0; i < 10; i++) {
147 bpf_map_update_elem(&hash_map_alloc, &key, &init_val, BPF_ANY);
148 value = bpf_map_lookup_elem(&hash_map_alloc, &key);
149 if (value)
150 bpf_map_delete_elem(&hash_map_alloc, &key);
151 }
152 return 0;
153 }
154
155 SEC("ksyscall/getegid")
156 int BPF_KSYSCALL(stress_percpu_hmap_alloc)
157 {
158 u32 key = bpf_get_current_pid_tgid();
159 long init_val = 1;
160 long *value;
161 int i;
162
163 for (i = 0; i < 10; i++) {
164 bpf_map_update_elem(&percpu_hash_map_alloc, &key, &init_val, BPF_ANY);
165 value = bpf_map_lookup_elem(&percpu_hash_map_alloc, &key);
166 if (value)
167 bpf_map_delete_elem(&percpu_hash_map_alloc, &key);
168 }
169 return 0;
170 }
171 SEC("ksyscall/connect")
172 int BPF_KSYSCALL(stress_lru_hmap_alloc, int fd, struct sockaddr_in *uservaddr,
173 int addrlen)
174 {
175 char fmt[] = "Failed at stress_lru_hmap_alloc. ret:%dn";
176 union {
177 u16 dst6[8];
178 struct {
179 u16 magic0;
180 u16 magic1;
181 u16 tcase;
182 u16 unused16;
183 u32 unused32;
184 u32 key;
185 };
186 } test_params;
187 struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)uservaddr;
188 u16 test_case;
189 long val = 1;
190 u32 key = 0;
191 int ret;
192
193 if (addrlen != sizeof(*in6))
194 return 0;
195
196 ret = bpf_probe_read_user(test_params.dst6, sizeof(test_params.dst6),
197 &in6->sin6_addr);
198 if (ret)
199 goto done;
200
201 if (test_params.magic0 != 0xdead ||
202 test_params.magic1 != 0xbeef)
203 return 0;
204
205 test_case = test_params.tcase;
206 if (test_case != 3)
207 key = bpf_get_prandom_u32();
208
209 if (test_case == 0) {
210 ret = bpf_map_update_elem(&lru_hash_map, &key, &val, BPF_ANY);
211 } else if (test_case == 1) {
212 ret = bpf_map_update_elem(&nocommon_lru_hash_map, &key, &val,
213 BPF_ANY);
214 } else if (test_case == 2) {
215 void *nolocal_lru_map;
216 int cpu = bpf_get_smp_processor_id();
217
218 nolocal_lru_map = bpf_map_lookup_elem(&array_of_lru_hashs,
219 &cpu);
220 if (!nolocal_lru_map) {
221 ret = -ENOENT;
222 goto done;
223 }
224
225 ret = bpf_map_update_elem(nolocal_lru_map, &key, &val,
226 BPF_ANY);
227 } else if (test_case == 3) {
228 u32 i;
229
230 key = test_params.key;
231
232 #pragma clang loop unroll(full)
233 for (i = 0; i < 32; i++) {
234 bpf_map_lookup_elem(&lru_hash_lookup_map, &key);
235 key++;
236 }
237 } else {
238 ret = -EINVAL;
239 }
240
241 done:
242 if (ret)
243 bpf_trace_printk(fmt, sizeof(fmt), ret);
244
245 return 0;
246 }
247
248 SEC("ksyscall/gettid")
249 int BPF_KSYSCALL(stress_lpm_trie_map_alloc)
250 {
251 union {
252 u32 b32[2];
253 u8 b8[8];
254 } key;
255 unsigned int i;
256
257 key.b32[0] = 32;
258 key.b8[4] = 192;
259 key.b8[5] = 168;
260 key.b8[6] = 0;
261 key.b8[7] = 1;
262
263 #pragma clang loop unroll(full)
264 for (i = 0; i < 32; ++i)
265 bpf_map_lookup_elem(&lpm_trie_map_alloc, &key);
266
267 return 0;
268 }
269
270 SEC("ksyscall/getpgid")
271 int BPF_KSYSCALL(stress_hash_map_lookup)
272 {
273 u32 key = 1, i;
274 long *value;
275
276 #pragma clang loop unroll(full)
277 for (i = 0; i < 64; ++i)
278 value = bpf_map_lookup_elem(&hash_map, &key);
279
280 return 0;
281 }
282
283 SEC("ksyscall/getppid")
284 int BPF_KSYSCALL(stress_array_map_lookup)
285 {
286 u32 key = 1, i;
287 long *value;
288
289 #pragma clang loop unroll(full)
290 for (i = 0; i < 64; ++i)
291 value = bpf_map_lookup_elem(&array_map, &key);
292
293 return 0;
294 }
295
296 char _license[] SEC("license") = "GPL";
297 u32 _version SEC("version") = LINUX_VERSION_CODE;
298
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