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/* 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;
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