123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100 |
- /* Copyright (c) 2016 Facebook
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- */
- #include <linux/skbuff.h>
- #include <linux/netdevice.h>
- #include <linux/version.h>
- #include <uapi/linux/bpf.h>
- #include "bpf_helpers.h"
- #define MAX_ENTRIES 1000
- struct bpf_map_def SEC("maps") hash_map = {
- .type = BPF_MAP_TYPE_HASH,
- .key_size = sizeof(u32),
- .value_size = sizeof(long),
- .max_entries = MAX_ENTRIES,
- };
- struct bpf_map_def SEC("maps") percpu_hash_map = {
- .type = BPF_MAP_TYPE_PERCPU_HASH,
- .key_size = sizeof(u32),
- .value_size = sizeof(long),
- .max_entries = MAX_ENTRIES,
- };
- struct bpf_map_def SEC("maps") hash_map_alloc = {
- .type = BPF_MAP_TYPE_HASH,
- .key_size = sizeof(u32),
- .value_size = sizeof(long),
- .max_entries = MAX_ENTRIES,
- .map_flags = BPF_F_NO_PREALLOC,
- };
- struct bpf_map_def SEC("maps") percpu_hash_map_alloc = {
- .type = BPF_MAP_TYPE_PERCPU_HASH,
- .key_size = sizeof(u32),
- .value_size = sizeof(long),
- .max_entries = MAX_ENTRIES,
- .map_flags = BPF_F_NO_PREALLOC,
- };
- SEC("kprobe/sys_getuid")
- int stress_hmap(struct pt_regs *ctx)
- {
- u32 key = bpf_get_current_pid_tgid();
- long init_val = 1;
- long *value;
- bpf_map_update_elem(&hash_map, &key, &init_val, BPF_ANY);
- value = bpf_map_lookup_elem(&hash_map, &key);
- if (value)
- bpf_map_delete_elem(&hash_map, &key);
- return 0;
- }
- SEC("kprobe/sys_geteuid")
- int stress_percpu_hmap(struct pt_regs *ctx)
- {
- u32 key = bpf_get_current_pid_tgid();
- long init_val = 1;
- long *value;
- bpf_map_update_elem(&percpu_hash_map, &key, &init_val, BPF_ANY);
- value = bpf_map_lookup_elem(&percpu_hash_map, &key);
- if (value)
- bpf_map_delete_elem(&percpu_hash_map, &key);
- return 0;
- }
- SEC("kprobe/sys_getgid")
- int stress_hmap_alloc(struct pt_regs *ctx)
- {
- u32 key = bpf_get_current_pid_tgid();
- long init_val = 1;
- long *value;
- bpf_map_update_elem(&hash_map_alloc, &key, &init_val, BPF_ANY);
- value = bpf_map_lookup_elem(&hash_map_alloc, &key);
- if (value)
- bpf_map_delete_elem(&hash_map_alloc, &key);
- return 0;
- }
- SEC("kprobe/sys_getegid")
- int stress_percpu_hmap_alloc(struct pt_regs *ctx)
- {
- u32 key = bpf_get_current_pid_tgid();
- long init_val = 1;
- long *value;
- bpf_map_update_elem(&percpu_hash_map_alloc, &key, &init_val, BPF_ANY);
- value = bpf_map_lookup_elem(&percpu_hash_map_alloc, &key);
- if (value)
- bpf_map_delete_elem(&percpu_hash_map_alloc, &key);
- return 0;
- }
- char _license[] SEC("license") = "GPL";
- u32 _version SEC("version") = LINUX_VERSION_CODE;
|