7943c0f329
proper types and function helpers are ready. Use them in verifier testsuite. Remove temporary stubs Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
|
|
*
|
|
* 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/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/err.h>
|
|
#include <linux/bpf.h>
|
|
|
|
/* test stubs for BPF_MAP_TYPE_UNSPEC and for BPF_PROG_TYPE_UNSPEC
|
|
* to be used by user space verifier testsuite
|
|
*/
|
|
struct bpf_context {
|
|
u64 arg1;
|
|
u64 arg2;
|
|
};
|
|
|
|
static const struct bpf_func_proto *test_func_proto(enum bpf_func_id func_id)
|
|
{
|
|
switch (func_id) {
|
|
case BPF_FUNC_map_lookup_elem:
|
|
return &bpf_map_lookup_elem_proto;
|
|
case BPF_FUNC_map_update_elem:
|
|
return &bpf_map_update_elem_proto;
|
|
case BPF_FUNC_map_delete_elem:
|
|
return &bpf_map_delete_elem_proto;
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static const struct bpf_context_access {
|
|
int size;
|
|
enum bpf_access_type type;
|
|
} test_ctx_access[] = {
|
|
[offsetof(struct bpf_context, arg1)] = {
|
|
FIELD_SIZEOF(struct bpf_context, arg1),
|
|
BPF_READ
|
|
},
|
|
[offsetof(struct bpf_context, arg2)] = {
|
|
FIELD_SIZEOF(struct bpf_context, arg2),
|
|
BPF_READ
|
|
},
|
|
};
|
|
|
|
static bool test_is_valid_access(int off, int size, enum bpf_access_type type)
|
|
{
|
|
const struct bpf_context_access *access;
|
|
|
|
if (off < 0 || off >= ARRAY_SIZE(test_ctx_access))
|
|
return false;
|
|
|
|
access = &test_ctx_access[off];
|
|
if (access->size == size && (access->type & type))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static struct bpf_verifier_ops test_ops = {
|
|
.get_func_proto = test_func_proto,
|
|
.is_valid_access = test_is_valid_access,
|
|
};
|
|
|
|
static struct bpf_prog_type_list tl_prog = {
|
|
.ops = &test_ops,
|
|
.type = BPF_PROG_TYPE_UNSPEC,
|
|
};
|
|
|
|
static int __init register_test_ops(void)
|
|
{
|
|
bpf_register_prog_type(&tl_prog);
|
|
return 0;
|
|
}
|
|
late_initcall(register_test_ops);
|