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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 "vmlinux.h"
#include <errno.h>
#include <linux/version.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_core_read.h>
#define MAX_ENTRIES 1000
#define MAX_NR_CPUS 1024
struct {
__uint(type, BPF_MAP_TYPE_HASH);
__type(key, u32);
__type(value, long);
__uint(max_entries, MAX_ENTRIES);
} hash_map SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_LRU_HASH);
__type(key, u32);
__type(value, long);
__uint(max_entries, 10000);
} lru_hash_map SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_LRU_HASH);
__type(key, u32);
__type(value, long);
__uint(max_entries, 10000);
__uint(map_flags, BPF_F_NO_COMMON_LRU);
} nocommon_lru_hash_map SEC(".maps");
struct inner_lru {
__uint(type, BPF_MAP_TYPE_LRU_HASH);
__type(key, u32);
__type(value, long);
__uint(max_entries, MAX_ENTRIES);
__uint(map_flags, BPF_F_NUMA_NODE);
__uint(numa_node, 0);
} inner_lru_hash_map SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
__uint(max_entries, MAX_NR_CPUS);
__uint(key_size, sizeof(u32));
__array(values, struct inner_lru); /* use inner_lru as inner map */
} array_of_lru_hashs SEC(".maps") = {
/* statically initialize the first element */
.values = { &inner_lru_hash_map },
};
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_HASH);
__uint(key_size, sizeof(u32));
__uint(value_size, sizeof(long));
__uint(max_entries, MAX_ENTRIES);
} percpu_hash_map SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_HASH);
__type(key, u32);
__type(value, long);
__uint(max_entries, MAX_ENTRIES);
__uint(map_flags, BPF_F_NO_PREALLOC);
} hash_map_alloc SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_HASH);
__uint(key_size, sizeof(u32));
__uint(value_size, sizeof(long));
__uint(max_entries, MAX_ENTRIES);
__uint(map_flags, BPF_F_NO_PREALLOC);
} percpu_hash_map_alloc SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_LPM_TRIE);
__uint(key_size, 8);
__uint(value_size, sizeof(long));
__uint(max_entries, 10000);
__uint(map_flags, BPF_F_NO_PREALLOC);
} lpm_trie_map_alloc SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__type(key, u32);
__type(value, long);
__uint(max_entries, MAX_ENTRIES);
} array_map SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_LRU_HASH);
__type(key, u32);
__type(value, long);
__uint(max_entries, MAX_ENTRIES);
} lru_hash_lookup_map SEC(".maps");
SEC("ksyscall/getuid")
int stress_hmap(struct pt_regs *ctx)
{
u32 key = bpf_get_current_pid_tgid();
long init_val = 1;
long *value;
int i;
for (i = 0; i < 10; i++) {
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("ksyscall/geteuid")
int stress_percpu_hmap(struct pt_regs *ctx)
{
u32 key = bpf_get_current_pid_tgid();
long init_val = 1;
long *value;
int i;
for (i = 0; i < 10; i++) {
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("ksyscall/getgid")
int stress_hmap_alloc(struct pt_regs *ctx)
{
u32 key = bpf_get_current_pid_tgid();
long init_val = 1;
long *value;
int i;
for (i = 0; i < 10; i++) {
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("ksyscall/getegid")
int stress_percpu_hmap_alloc(struct pt_regs *ctx)
{
u32 key = bpf_get_current_pid_tgid();
long init_val = 1;
long *value;
int i;
for (i = 0; i < 10; i++) {
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;
}
SEC("ksyscall/connect")
int stress_lru_hmap_alloc(struct pt_regs *ctx)
{
struct pt_regs *real_regs = (struct pt_regs *)PT_REGS_PARM1_CORE(ctx);
char fmt[] = "Failed at stress_lru_hmap_alloc. ret:%dn";
union {
u16 dst6[8];
struct {
u16 magic0;
u16 magic1;
u16 tcase;
u16 unused16;
u32 unused32;
u32 key;
};
} test_params;
struct sockaddr_in6 *in6;
u16 test_case;
int addrlen, ret;
long val = 1;
u32 key = 0;
in6 = (struct sockaddr_in6 *)PT_REGS_PARM2_CORE(real_regs);
addrlen = (int)PT_REGS_PARM3_CORE(real_regs);
if (addrlen != sizeof(*in6))
return 0;
ret = bpf_probe_read_user(test_params.dst6, sizeof(test_params.dst6),
&in6->sin6_addr);
if (ret)
goto done;
if (test_params.magic0 != 0xdead ||
test_params.magic1 != 0xbeef)
return 0;
test_case = test_params.tcase;
if (test_case != 3)
key = bpf_get_prandom_u32();
if (test_case == 0) {
ret = bpf_map_update_elem(&lru_hash_map, &key, &val, BPF_ANY);
} else if (test_case == 1) {
ret = bpf_map_update_elem(&nocommon_lru_hash_map, &key, &val,
BPF_ANY);
} else if (test_case == 2) {
void *nolocal_lru_map;
int cpu = bpf_get_smp_processor_id();
nolocal_lru_map = bpf_map_lookup_elem(&array_of_lru_hashs,
&cpu);
if (!nolocal_lru_map) {
ret = -ENOENT;
goto done;
}
ret = bpf_map_update_elem(nolocal_lru_map, &key, &val,
BPF_ANY);
} else if (test_case == 3) {
u32 i;
key = test_params.key;
#pragma clang loop unroll(full)
for (i = 0; i < 32; i++) {
bpf_map_lookup_elem(&lru_hash_lookup_map, &key);
key++;
}
} else {
ret = -EINVAL;
}
done:
if (ret)
bpf_trace_printk(fmt, sizeof(fmt), ret);
return 0;
}
SEC("ksyscall/gettid")
int stress_lpm_trie_map_alloc(struct pt_regs *ctx)
{
union {
u32 b32[2];
u8 b8[8];
} key;
unsigned int i;
key.b32[0] = 32;
key.b8[4] = 192;
key.b8[5] = 168;
key.b8[6] = 0;
key.b8[7] = 1;
#pragma clang loop unroll(full)
for (i = 0; i < 32; ++i)
bpf_map_lookup_elem(&lpm_trie_map_alloc, &key);
return 0;
}
SEC("ksyscall/getpgid")
int stress_hash_map_lookup(struct pt_regs *ctx)
{
u32 key = 1, i;
long *value;
#pragma clang loop unroll(full)
for (i = 0; i < 64; ++i)
value = bpf_map_lookup_elem(&hash_map, &key);
return 0;
}
SEC("ksyscall/getppid")
int stress_array_map_lookup(struct pt_regs *ctx)
{
u32 key = 1, i;
long *value;
#pragma clang loop unroll(full)
for (i = 0; i < 64; ++i)
value = bpf_map_lookup_elem(&array_map, &key);
return 0;
}
char _license[] SEC("license") = "GPL";
u32 _version SEC("version") = LINUX_VERSION_CODE;
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