// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */ #include "vmlinux.h" #include <bpf/bpf_helpers.h> #include "bpf_misc.h" struct bpf_iter_testmod_seq { u64 :64; u64 :64; }; extern int bpf_iter_testmod_seq_new(struct bpf_iter_testmod_seq *it, s64 value, int cnt) __ksym; extern s64 *bpf_iter_testmod_seq_next(struct bpf_iter_testmod_seq *it) __ksym; extern void bpf_iter_testmod_seq_destroy(struct bpf_iter_testmod_seq *it) __ksym; const volatile __s64 exp_empty = 0 + 1; __s64 res_empty; SEC("raw_tp/sys_enter") __success __log_level(2) __msg("fp-16_w=iter_testmod_seq(ref_id=1,state=active,depth=0)") __msg("fp-16=iter_testmod_seq(ref_id=1,state=drained,depth=0)") __msg("call bpf_iter_testmod_seq_destroy") int testmod_seq_empty(const void *ctx) { __s64 sum = 0, *i; bpf_for_each(testmod_seq, i, 1000, 0) sum += *i; res_empty = 1 + sum; return 0; } const volatile __s64 exp_full = 1000000; __s64 res_full; SEC("raw_tp/sys_enter") __success __log_level(2) __msg("fp-16_w=iter_testmod_seq(ref_id=1,state=active,depth=0)") __msg("fp-16=iter_testmod_seq(ref_id=1,state=drained,depth=0)") __msg("call bpf_iter_testmod_seq_destroy") int testmod_seq_full(const void *ctx) { __s64 sum = 0, *i; bpf_for_each(testmod_seq, i, 1000, 1000) sum += *i; res_full = sum; return 0; } const volatile __s64 exp_truncated = 10 * 1000000; __s64 res_truncated; static volatile int zero = 0; SEC("raw_tp/sys_enter") __success __log_level(2) __msg("fp-16_w=iter_testmod_seq(ref_id=1,state=active,depth=0)") __msg("fp-16=iter_testmod_seq(ref_id=1,state=drained,depth=0)") __msg("call bpf_iter_testmod_seq_destroy") int testmod_seq_truncated(const void *ctx) { __s64 sum = 0, *i; int cnt = zero; bpf_for_each(testmod_seq, i, 10, 2000000) { sum += *i; cnt++; if (cnt >= 1000000) break; } res_truncated = sum; return 0; } char _license[] SEC("license") = "GPL";