1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */
3
4 #include "vmlinux.h"
5 #include <bpf/bpf_helpers.h>
6 #include "bpf_misc.h"
7
8 struct bpf_iter_testmod_seq {
9 u64 :64;
10 u64 :64;
11 };
12
13 extern int bpf_iter_testmod_seq_new(struct bpf_iter_testmod_seq *it, s64 value, int cnt) __ksym;
14 extern s64 *bpf_iter_testmod_seq_next(struct bpf_iter_testmod_seq *it) __ksym;
15 extern void bpf_iter_testmod_seq_destroy(struct bpf_iter_testmod_seq *it) __ksym;
16
17 const volatile __s64 exp_empty = 0 + 1;
18 __s64 res_empty;
19
20 SEC("raw_tp/sys_enter")
21 __success __log_level(2)
22 __msg("fp-16_w=iter_testmod_seq(ref_id=1,state=active,depth=0)")
23 __msg("fp-16=iter_testmod_seq(ref_id=1,state=drained,depth=0)")
24 __msg("call bpf_iter_testmod_seq_destroy")
testmod_seq_empty(const void * ctx)25 int testmod_seq_empty(const void *ctx)
26 {
27 __s64 sum = 0, *i;
28
29 bpf_for_each(testmod_seq, i, 1000, 0) sum += *i;
30 res_empty = 1 + sum;
31
32 return 0;
33 }
34
35 const volatile __s64 exp_full = 1000000;
36 __s64 res_full;
37
38 SEC("raw_tp/sys_enter")
39 __success __log_level(2)
40 __msg("fp-16_w=iter_testmod_seq(ref_id=1,state=active,depth=0)")
41 __msg("fp-16=iter_testmod_seq(ref_id=1,state=drained,depth=0)")
42 __msg("call bpf_iter_testmod_seq_destroy")
testmod_seq_full(const void * ctx)43 int testmod_seq_full(const void *ctx)
44 {
45 __s64 sum = 0, *i;
46
47 bpf_for_each(testmod_seq, i, 1000, 1000) sum += *i;
48 res_full = sum;
49
50 return 0;
51 }
52
53 const volatile __s64 exp_truncated = 10 * 1000000;
54 __s64 res_truncated;
55
56 static volatile int zero = 0;
57
58 SEC("raw_tp/sys_enter")
59 __success __log_level(2)
60 __msg("fp-16_w=iter_testmod_seq(ref_id=1,state=active,depth=0)")
61 __msg("fp-16=iter_testmod_seq(ref_id=1,state=drained,depth=0)")
62 __msg("call bpf_iter_testmod_seq_destroy")
testmod_seq_truncated(const void * ctx)63 int testmod_seq_truncated(const void *ctx)
64 {
65 __s64 sum = 0, *i;
66 int cnt = zero;
67
68 bpf_for_each(testmod_seq, i, 10, 2000000) {
69 sum += *i;
70 cnt++;
71 if (cnt >= 1000000)
72 break;
73 }
74 res_truncated = sum;
75
76 return 0;
77 }
78
79 char _license[] SEC("license") = "GPL";
80