Add BPF_COP and BPF_COPX tests.
This commit is contained in:
alnsn
parent
32d87f41a7
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5990d54c7c
572
tests/lib/libbpfjit/t_cop.c
Normal file
572
tests/lib/libbpfjit/t_cop.c
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/* $NetBSD: t_cop.c,v 1.1 2014/06/25 18:04:05 alnsn Exp $ */
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/*-
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* Copyright (c) 2014 Alexander Nasonov.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: t_cop.c,v 1.1 2014/06/25 18:04:05 alnsn Exp $");
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#include <atf-c.h>
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#include <stdint.h>
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#include <string.h>
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#define __BPF_PRIVATE
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#include <net/bpf.h>
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#include <net/bpfjit.h>
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static uint32_t retA(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A);
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static uint32_t retBL(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A);
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static uint32_t retWL(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A);
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static uint32_t retNF(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A);
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static uint32_t setARG(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A);
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static const bpf_copfunc_t copfuncs[] = {
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&retA,
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&retBL,
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&retWL,
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&retNF,
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&setARG
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};
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static const bpf_ctx_t ctx = {
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.copfuncs = copfuncs,
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.nfuncs = sizeof(copfuncs) / sizeof(copfuncs[0]),
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.extwords = 0
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};
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static uint32_t
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retA(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A)
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{
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return A;
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}
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static uint32_t
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retBL(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A)
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{
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return args->buflen;
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}
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static uint32_t
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retWL(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A)
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{
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return args->wirelen;
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}
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static uint32_t
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retNF(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A)
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{
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return bc->nfuncs;
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}
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/*
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* COP function with a side effect.
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*/
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static uint32_t
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setARG(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A)
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{
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bool *arg = (bool *)args->arg;
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bool old = *arg;
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*arg = true;
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return old;
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}
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ATF_TC(bpfjit_cop_no_ctx);
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ATF_TC_HEAD(bpfjit_cop_no_ctx, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test that bpf program with BPF_COP "
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"instruction isn't valid without a context");
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}
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ATF_TC_BODY(bpfjit_cop_no_ctx, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_MISC+BPF_COP, 0),
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BPF_STMT(BPF_RET+BPF_K, 7)
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};
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bpfjit_func_t code;
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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ATF_CHECK(!bpf_validate(insns, insn_count));
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code = bpfjit_generate_code(NULL, insns, insn_count);
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ATF_CHECK(code == NULL);
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}
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ATF_TC(bpfjit_cop_ret_A);
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ATF_TC_HEAD(bpfjit_cop_ret_A, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
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"that returns a content of the A register");
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}
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ATF_TC_BODY(bpfjit_cop_ret_A, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_MISC+BPF_COP, 0), // retA
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt),
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == 13);
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bpfjit_free_code(code);
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}
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ATF_TC(bpfjit_cop_ret_buflen);
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ATF_TC_HEAD(bpfjit_cop_ret_buflen, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
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"that returns the buflen argument");
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}
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ATF_TC_BODY(bpfjit_cop_ret_buflen, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_MISC+BPF_COP, 1), // retBL
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt)
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == sizeof(pkt));
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bpfjit_free_code(code);
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}
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ATF_TC(bpfjit_cop_ret_wirelen);
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ATF_TC_HEAD(bpfjit_cop_ret_wirelen, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
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"that returns the wirelen argument");
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}
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ATF_TC_BODY(bpfjit_cop_ret_wirelen, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_MISC+BPF_COP, 2), // retWL
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt)
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == sizeof(pkt));
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bpfjit_free_code(code);
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}
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ATF_TC(bpfjit_cop_ret_nfuncs);
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ATF_TC_HEAD(bpfjit_cop_ret_nfuncs, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
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"that returns nfuncs member of the context argument");
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}
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ATF_TC_BODY(bpfjit_cop_ret_nfuncs, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_MISC+BPF_COP, 3), // retNF
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt)
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == ctx.nfuncs);
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bpfjit_free_code(code);
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}
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ATF_TC(bpfjit_cop_side_effect);
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ATF_TC_HEAD(bpfjit_cop_side_effect, tc)
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{
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atf_tc_set_md_var(tc, "descr",
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"Test that ABC optimization doesn't skip BPF_COP call");
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}
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ATF_TC_BODY(bpfjit_cop_side_effect, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 0),
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BPF_STMT(BPF_MISC+BPF_COP, 4), // setARG
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BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 99999),
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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bool arg = false;
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uint8_t pkt[1] = { 0 };
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt),
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.mem = NULL,
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.arg = &arg
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == 0);
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ATF_CHECK(arg == true);
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bpfjit_free_code(code);
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}
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ATF_TC(bpfjit_cop_invalid_index);
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ATF_TC_HEAD(bpfjit_cop_invalid_index, tc)
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{
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atf_tc_set_md_var(tc, "descr",
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"Test that out-of-range coprocessor function fails validation");
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}
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ATF_TC_BODY(bpfjit_cop_invalid_index, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_MISC+BPF_COP, 6), // invalid index
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BPF_STMT(BPF_RET+BPF_K, 27)
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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ATF_CHECK(bpfjit_generate_code(&ctx, insns, insn_count) == NULL);
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}
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ATF_TC(bpfjit_copx_no_ctx);
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ATF_TC_HEAD(bpfjit_copx_no_ctx, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test that bpf program with BPF_COPX "
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"instruction isn't valid without a context");
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}
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ATF_TC_BODY(bpfjit_copx_no_ctx, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_MISC+BPF_COP, 0),
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BPF_STMT(BPF_RET+BPF_K, 7)
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};
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bpfjit_func_t code;
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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ATF_CHECK(!bpf_validate(insns, insn_count));
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code = bpfjit_generate_code(NULL, insns, insn_count);
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ATF_CHECK(code == NULL);
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}
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ATF_TC(bpfjit_copx_ret_A);
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ATF_TC_HEAD(bpfjit_copx_ret_A, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
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"that returns a content of the A register");
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}
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ATF_TC_BODY(bpfjit_copx_ret_A, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_LDX+BPF_IMM, 0), // retA
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BPF_STMT(BPF_MISC+BPF_COPX, 0),
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt),
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == 13);
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bpfjit_free_code(code);
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}
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ATF_TC(bpfjit_copx_ret_buflen);
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ATF_TC_HEAD(bpfjit_copx_ret_buflen, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
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"that returns the buflen argument");
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}
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ATF_TC_BODY(bpfjit_copx_ret_buflen, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_LDX+BPF_IMM, 1), // retBL
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BPF_STMT(BPF_MISC+BPF_COPX, 0),
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt)
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == sizeof(pkt));
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bpfjit_free_code(code);
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}
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ATF_TC(bpfjit_copx_ret_wirelen);
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ATF_TC_HEAD(bpfjit_copx_ret_wirelen, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
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"that returns the wirelen argument");
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}
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ATF_TC_BODY(bpfjit_copx_ret_wirelen, tc)
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{
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static struct bpf_insn insns[] = {
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BPF_STMT(BPF_LDX+BPF_IMM, 2), // retWL
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BPF_STMT(BPF_LD+BPF_IMM, 13),
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BPF_STMT(BPF_MISC+BPF_COPX, 0),
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BPF_STMT(BPF_RET+BPF_A, 0)
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};
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bpfjit_func_t code;
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uint8_t pkt[1] = { 0 };
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bpf_args_t args = {
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.pkt = pkt,
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.buflen = sizeof(pkt),
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.wirelen = sizeof(pkt)
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};
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size_t insn_count = sizeof(insns) / sizeof(insns[0]);
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code = bpfjit_generate_code(&ctx, insns, insn_count);
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ATF_REQUIRE(code != NULL);
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ATF_CHECK(code(&ctx, &args) == sizeof(pkt));
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bpfjit_free_code(code);
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}
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ATF_TC(bpfjit_copx_ret_nfuncs);
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ATF_TC_HEAD(bpfjit_copx_ret_nfuncs, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test coprocessor function "
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"that returns nfuncs member of the context argument");
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}
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|
||||
ATF_TC_BODY(bpfjit_copx_ret_nfuncs, tc)
|
||||
{
|
||||
static struct bpf_insn insns[] = {
|
||||
BPF_STMT(BPF_LD+BPF_IMM, 13),
|
||||
BPF_STMT(BPF_LDX+BPF_IMM, 3), // retNF
|
||||
BPF_STMT(BPF_MISC+BPF_COPX, 0),
|
||||
BPF_STMT(BPF_RET+BPF_A, 0)
|
||||
};
|
||||
|
||||
bpfjit_func_t code;
|
||||
uint8_t pkt[1] = { 0 };
|
||||
bpf_args_t args = {
|
||||
.pkt = pkt,
|
||||
.buflen = sizeof(pkt),
|
||||
.wirelen = sizeof(pkt)
|
||||
};
|
||||
|
||||
size_t insn_count = sizeof(insns) / sizeof(insns[0]);
|
||||
|
||||
code = bpfjit_generate_code(&ctx, insns, insn_count);
|
||||
ATF_REQUIRE(code != NULL);
|
||||
|
||||
ATF_CHECK(code(&ctx, &args) == ctx.nfuncs);
|
||||
|
||||
bpfjit_free_code(code);
|
||||
}
|
||||
|
||||
ATF_TC(bpfjit_copx_side_effect);
|
||||
ATF_TC_HEAD(bpfjit_copx_side_effect, tc)
|
||||
{
|
||||
atf_tc_set_md_var(tc, "descr",
|
||||
"Test that ABC optimization doesn't skip BPF_COPX call");
|
||||
}
|
||||
|
||||
ATF_TC_BODY(bpfjit_copx_side_effect, tc)
|
||||
{
|
||||
static struct bpf_insn insns[] = {
|
||||
BPF_STMT(BPF_LD+BPF_IMM, 13),
|
||||
BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 0),
|
||||
BPF_STMT(BPF_LDX+BPF_IMM, 4), // setARG
|
||||
BPF_STMT(BPF_MISC+BPF_COPX, 0),
|
||||
BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 99999),
|
||||
BPF_STMT(BPF_RET+BPF_A, 0)
|
||||
};
|
||||
|
||||
bpfjit_func_t code;
|
||||
bool arg = false;
|
||||
uint8_t pkt[1] = { 0 };
|
||||
bpf_args_t args = {
|
||||
.pkt = pkt,
|
||||
.buflen = sizeof(pkt),
|
||||
.wirelen = sizeof(pkt),
|
||||
.mem = NULL,
|
||||
.arg = &arg
|
||||
};
|
||||
|
||||
size_t insn_count = sizeof(insns) / sizeof(insns[0]);
|
||||
|
||||
code = bpfjit_generate_code(&ctx, insns, insn_count);
|
||||
ATF_REQUIRE(code != NULL);
|
||||
|
||||
ATF_CHECK(code(&ctx, &args) == 0);
|
||||
ATF_CHECK(arg == true);
|
||||
|
||||
bpfjit_free_code(code);
|
||||
}
|
||||
|
||||
ATF_TC(bpfjit_copx_invalid_index);
|
||||
ATF_TC_HEAD(bpfjit_copx_invalid_index, tc)
|
||||
{
|
||||
atf_tc_set_md_var(tc, "descr",
|
||||
"Test that out-of-range BPF_COPX call fails at runtime");
|
||||
}
|
||||
|
||||
ATF_TC_BODY(bpfjit_copx_invalid_index, tc)
|
||||
{
|
||||
static struct bpf_insn insns[] = {
|
||||
BPF_STMT(BPF_LDX+BPF_IMM, 5), // invalid index
|
||||
BPF_STMT(BPF_MISC+BPF_COPX, 0),
|
||||
BPF_STMT(BPF_RET+BPF_K, 27)
|
||||
};
|
||||
|
||||
bpfjit_func_t code;
|
||||
uint8_t pkt[1] = { 0 };
|
||||
bpf_args_t args = {
|
||||
.pkt = pkt,
|
||||
.buflen = sizeof(pkt),
|
||||
.wirelen = sizeof(pkt)
|
||||
};
|
||||
|
||||
size_t insn_count = sizeof(insns) / sizeof(insns[0]);
|
||||
|
||||
code = bpfjit_generate_code(&ctx, insns, insn_count);
|
||||
ATF_REQUIRE(code != NULL);
|
||||
|
||||
ATF_CHECK(code(&ctx, &args) == 0);
|
||||
|
||||
bpfjit_free_code(code);
|
||||
}
|
||||
|
||||
ATF_TP_ADD_TCS(tp)
|
||||
{
|
||||
|
||||
ATF_TP_ADD_TC(tp, bpfjit_cop_no_ctx);
|
||||
ATF_TP_ADD_TC(tp, bpfjit_cop_ret_A);
|
||||
ATF_TP_ADD_TC(tp, bpfjit_cop_ret_buflen);
|
||||
ATF_TP_ADD_TC(tp, bpfjit_cop_ret_wirelen);
|
||||
ATF_TP_ADD_TC(tp, bpfjit_cop_ret_nfuncs);
|
||||
ATF_TP_ADD_TC(tp, bpfjit_cop_side_effect);
|
||||
ATF_TP_ADD_TC(tp, bpfjit_cop_invalid_index);
|
||||
|
||||
ATF_TP_ADD_TC(tp, bpfjit_copx_no_ctx);
|
||||
ATF_TP_ADD_TC(tp, bpfjit_copx_ret_A);
|
||||
ATF_TP_ADD_TC(tp, bpfjit_copx_ret_buflen);
|
||||
ATF_TP_ADD_TC(tp, bpfjit_copx_ret_wirelen);
|
||||
ATF_TP_ADD_TC(tp, bpfjit_copx_ret_nfuncs);
|
||||
ATF_TP_ADD_TC(tp, bpfjit_copx_side_effect);
|
||||
ATF_TP_ADD_TC(tp, bpfjit_copx_invalid_index);
|
||||
|
||||
return atf_no_error();
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user