diff options
Diffstat (limited to 'contrib/netbsd-tests/lib/libbpfjit/t_extmem.c')
| -rw-r--r-- | contrib/netbsd-tests/lib/libbpfjit/t_extmem.c | 483 |
1 files changed, 483 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/lib/libbpfjit/t_extmem.c b/contrib/netbsd-tests/lib/libbpfjit/t_extmem.c new file mode 100644 index 0000000..ab6ea88 --- /dev/null +++ b/contrib/netbsd-tests/lib/libbpfjit/t_extmem.c @@ -0,0 +1,483 @@ +/* $NetBSD: t_extmem.c,v 1.3 2014/07/14 19:11:15 alnsn Exp $ */ + +/*- + * Copyright (c) 2014 Alexander Nasonov. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__RCSID("$NetBSD: t_extmem.c,v 1.3 2014/07/14 19:11:15 alnsn Exp $"); + +#include <atf-c.h> +#include <stdint.h> +#include <string.h> + +#define __BPF_PRIVATE +#include <net/bpf.h> +#include <net/bpfjit.h> + +static uint32_t retM(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A); + +static const bpf_copfunc_t copfuncs[] = { + &retM +}; + +static const bpf_ctx_t ctx = { + .copfuncs = copfuncs, + .nfuncs = sizeof(copfuncs) / sizeof(copfuncs[0]), + .extwords = 4, + .preinited = BPF_MEMWORD_INIT(0) | BPF_MEMWORD_INIT(3), +}; + +static uint32_t +retM(const bpf_ctx_t *bc, bpf_args_t *args, uint32_t A) +{ + + return args->mem[(uintptr_t)args->arg]; +} + + +ATF_TC(libbpfjit_extmem_load_default); +ATF_TC_HEAD(libbpfjit_extmem_load_default, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test that external memory " + "is zero initialized by default"); +} + +ATF_TC_BODY(libbpfjit_extmem_load_default, tc) +{ + static struct bpf_insn insns[] = { + BPF_STMT(BPF_LD+BPF_MEM, 1), + BPF_STMT(BPF_RET+BPF_A, 0) + }; + + bpfjit_func_t code; + uint8_t pkt[1] = { 0 }; + uint32_t mem[ctx.extwords]; + + /* Pre-inited words. */ + mem[0] = 0; + mem[3] = 3; + + bpf_args_t args = { + .pkt = pkt, + .buflen = sizeof(pkt), + .wirelen = sizeof(pkt), + .mem = mem, + }; + + 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_TC(libbpfjit_extmem_load_preinited); +ATF_TC_HEAD(libbpfjit_extmem_load_preinited, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test a load of external " + "pre-initialized memory"); +} + +ATF_TC_BODY(libbpfjit_extmem_load_preinited, tc) +{ + static struct bpf_insn insns[] = { + BPF_STMT(BPF_LD+BPF_MEM, 3), + BPF_STMT(BPF_RET+BPF_A, 0) + }; + + bpfjit_func_t code; + uint8_t pkt[1] = { 0 }; + uint32_t mem[ctx.extwords]; + + /* Pre-inited words. */ + mem[0] = 0; + mem[3] = 3; + + bpf_args_t args = { + .pkt = pkt, + .buflen = sizeof(pkt), + .wirelen = sizeof(pkt), + .mem = mem, + }; + + 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) == 3); + + bpfjit_free_code(code); +} + +ATF_TC(libbpfjit_extmem_invalid_load); +ATF_TC_HEAD(libbpfjit_extmem_invalid_load, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test that out-of-range load " + "fails validation"); +} + +ATF_TC_BODY(libbpfjit_extmem_invalid_load, tc) +{ + static struct bpf_insn insns[] = { + BPF_STMT(BPF_LD+BPF_MEM, 4), + BPF_STMT(BPF_RET+BPF_A, 0) + }; + + size_t insn_count = sizeof(insns) / sizeof(insns[0]); + + ATF_CHECK(bpfjit_generate_code(&ctx, insns, insn_count) == NULL); +} + +ATF_TC(libbpfjit_extmem_store); +ATF_TC_HEAD(libbpfjit_extmem_store, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test stores to external memory"); +} + +ATF_TC_BODY(libbpfjit_extmem_store, tc) +{ + static struct bpf_insn insns[] = { + BPF_STMT(BPF_LD+BPF_IMM, 1), /* A <- 1 */ + BPF_STMT(BPF_LDX+BPF_W+BPF_IMM, 2), /* X <- 2 */ + BPF_STMT(BPF_ST, 1), /* M[1] <- A */ + BPF_STMT(BPF_ALU+BPF_ADD+BPF_X, 0), /* A <- A + X */ + BPF_STMT(BPF_STX, 2), /* M[2] <- X */ + BPF_STMT(BPF_ST, 3), /* M[3] <- A */ + BPF_STMT(BPF_RET+BPF_A, 0) /* ret A */ + }; + + bpfjit_func_t code; + uint8_t pkt[1] = { 0 }; + uint32_t mem[ctx.extwords]; + + /* Pre-inited words. */ + mem[0] = 0; + mem[3] = 7; + + mem[1] = mem[2] = 0xdeadbeef; + + bpf_args_t args = { + .pkt = pkt, + .buflen = sizeof(pkt), + .wirelen = sizeof(pkt), + .mem = mem, + }; + + 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) == 3); + + bpfjit_free_code(code); + + ATF_CHECK(mem[0] == 0); + ATF_CHECK(mem[1] == 1); + ATF_CHECK(mem[2] == 2); + ATF_CHECK(mem[3] == 3); +} + +ATF_TC(libbpfjit_extmem_side_effect); +ATF_TC_HEAD(libbpfjit_extmem_side_effect, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test that ABC optimization doesn\'t " + "skip stores to external memory"); +} + +ATF_TC_BODY(libbpfjit_extmem_side_effect, tc) +{ + static struct bpf_insn insns[] = { + BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 0), /* A <- P[0] */ + BPF_STMT(BPF_LDX+BPF_W+BPF_IMM, 2), /* X <- 2 */ + BPF_STMT(BPF_ST, 1), /* M[1] <- A */ + BPF_STMT(BPF_ALU+BPF_ADD+BPF_X, 0), /* A <- A + X */ + BPF_STMT(BPF_STX, 2), /* M[2] <- X */ + BPF_STMT(BPF_ST, 3), /* M[3] <- A */ + BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 99), /* A <- P[99] */ + BPF_STMT(BPF_RET+BPF_A, 0) /* ret A */ + }; + + bpfjit_func_t code; + uint8_t pkt[1] = { 1 }; + uint32_t mem[ctx.extwords]; + + /* Pre-inited words. */ + mem[0] = 0; + mem[3] = 7; + + mem[1] = mem[2] = 0xdeadbeef; + + bpf_args_t args = { + .pkt = pkt, + .buflen = sizeof(pkt), + .wirelen = sizeof(pkt), + .mem = mem, + }; + + 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_CHECK(mem[0] == 0); + ATF_CHECK(mem[1] == 1); + ATF_CHECK(mem[2] == 2); + ATF_CHECK(mem[3] == 3); +} + +ATF_TC(libbpfjit_extmem_invalid_store); +ATF_TC_HEAD(libbpfjit_extmem_invalid_store, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test that out-of-range store " + "fails validation"); +} + +ATF_TC_BODY(libbpfjit_extmem_invalid_store, tc) +{ + static struct bpf_insn insns[] = { + BPF_STMT(BPF_ST, 4), + BPF_STMT(BPF_RET+BPF_A, 0) + }; + + size_t insn_count = sizeof(insns) / sizeof(insns[0]); + + ATF_CHECK(bpfjit_generate_code(&ctx, insns, insn_count) == NULL); +} + +ATF_TC(libbpfjit_cop_ret_mem); +ATF_TC_HEAD(libbpfjit_cop_ret_mem, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test coprocessor function " + "that returns a content of external memory word"); +} + +ATF_TC_BODY(libbpfjit_cop_ret_mem, tc) +{ + static struct bpf_insn insns[] = { + BPF_STMT(BPF_LD+BPF_IMM, 13), + BPF_STMT(BPF_ST, 2), + BPF_STMT(BPF_LD+BPF_IMM, 137), + BPF_STMT(BPF_ST, 1), + BPF_STMT(BPF_MISC+BPF_COP, 0), // retM + BPF_STMT(BPF_RET+BPF_A, 0) + }; + + bpfjit_func_t code; + uint8_t pkt[1] = { 0 }; + uint32_t mem[ctx.extwords]; + void *arg = (void*)(uintptr_t)2; + + /* Pre-inited words. */ + mem[0] = 0; + mem[3] = 3; + + bpf_args_t args = { + .pkt = pkt, + .buflen = sizeof(pkt), + .wirelen = sizeof(pkt), + .arg = arg, + .mem = mem, + }; + + 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) == 13); + + bpfjit_free_code(code); +} + +ATF_TC(libbpfjit_cop_ret_preinited_mem); +ATF_TC_HEAD(libbpfjit_cop_ret_preinited_mem, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test coprocessor function that " + "returns a content of external pre-initialized memory word"); +} + +ATF_TC_BODY(libbpfjit_cop_ret_preinited_mem, tc) +{ + static struct bpf_insn insns[] = { + BPF_STMT(BPF_LD+BPF_IMM, 13), + BPF_STMT(BPF_ST, 2), + BPF_STMT(BPF_LD+BPF_IMM, 137), + BPF_STMT(BPF_ST, 1), + BPF_STMT(BPF_MISC+BPF_COP, 0), // retM + BPF_STMT(BPF_RET+BPF_A, 0) + }; + + bpfjit_func_t code; + uint8_t pkt[1] = { 0 }; + uint32_t mem[ctx.extwords]; + void *arg = (void*)(uintptr_t)3; + + /* Pre-inited words. */ + mem[0] = 0; + mem[3] = 3; + + bpf_args_t args = { + .pkt = pkt, + .buflen = sizeof(pkt), + .wirelen = sizeof(pkt), + .arg = arg, + .mem = mem, + }; + + 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) == 3); + + bpfjit_free_code(code); +} + +ATF_TC(libbpfjit_copx_ret_mem); +ATF_TC_HEAD(libbpfjit_copx_ret_mem, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test coprocessor function " + "that returns a content of external memory word"); +} + +ATF_TC_BODY(libbpfjit_copx_ret_mem, tc) +{ + static struct bpf_insn insns[] = { + BPF_STMT(BPF_LD+BPF_IMM, 13), + BPF_STMT(BPF_ST, 2), + BPF_STMT(BPF_LD+BPF_IMM, 137), + BPF_STMT(BPF_ST, 1), + BPF_STMT(BPF_LDX+BPF_IMM, 0), // retM + BPF_STMT(BPF_MISC+BPF_COPX, 0), + BPF_STMT(BPF_RET+BPF_A, 0) + }; + + bpfjit_func_t code; + uint8_t pkt[1] = { 0 }; + uint32_t mem[ctx.extwords]; + void *arg = (void*)(uintptr_t)2; + + /* Pre-inited words. */ + mem[0] = 0; + mem[3] = 3; + + bpf_args_t args = { + .pkt = pkt, + .buflen = sizeof(pkt), + .wirelen = sizeof(pkt), + .arg = arg, + .mem = mem, + }; + + 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) == 13); + + bpfjit_free_code(code); +} + +ATF_TC(libbpfjit_copx_ret_preinited_mem); +ATF_TC_HEAD(libbpfjit_copx_ret_preinited_mem, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test coprocessor function that " + "returns a content of external pre-initialized memory word"); +} + +ATF_TC_BODY(libbpfjit_copx_ret_preinited_mem, tc) +{ + static struct bpf_insn insns[] = { + BPF_STMT(BPF_LD+BPF_IMM, 13), + BPF_STMT(BPF_ST, 2), + BPF_STMT(BPF_LD+BPF_IMM, 137), + BPF_STMT(BPF_ST, 1), + BPF_STMT(BPF_LDX+BPF_IMM, 0), // retM + BPF_STMT(BPF_MISC+BPF_COPX, 0), + BPF_STMT(BPF_RET+BPF_A, 0) + }; + + bpfjit_func_t code; + uint8_t pkt[1] = { 0 }; + uint32_t mem[ctx.extwords]; + void *arg = (void*)(uintptr_t)3; + + /* Pre-inited words. */ + mem[0] = 0; + mem[3] = 3; + + bpf_args_t args = { + .pkt = pkt, + .buflen = sizeof(pkt), + .wirelen = sizeof(pkt), + .arg = arg, + .mem = mem, + }; + + 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) == 3); + + bpfjit_free_code(code); +} + +ATF_TP_ADD_TCS(tp) +{ + + /* + * For every new test please also add a similar test + * to ../../net/bpfjit/t_extmem.c + */ + ATF_TP_ADD_TC(tp, libbpfjit_extmem_load_default); + ATF_TP_ADD_TC(tp, libbpfjit_extmem_load_preinited); + ATF_TP_ADD_TC(tp, libbpfjit_extmem_invalid_load); + ATF_TP_ADD_TC(tp, libbpfjit_extmem_store); + ATF_TP_ADD_TC(tp, libbpfjit_extmem_side_effect); + ATF_TP_ADD_TC(tp, libbpfjit_extmem_invalid_store); + ATF_TP_ADD_TC(tp, libbpfjit_cop_ret_mem); + ATF_TP_ADD_TC(tp, libbpfjit_cop_ret_preinited_mem); + ATF_TP_ADD_TC(tp, libbpfjit_copx_ret_mem); + ATF_TP_ADD_TC(tp, libbpfjit_copx_ret_preinited_mem); + + return atf_no_error(); +} |
