From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E7FD6ECE59D for ; Wed, 16 Oct 2019 03:30:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A3D6C2082C for ; Wed, 16 Oct 2019 03:30:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="jnzANr73" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390987AbfJPDaM (ORCPT ); Tue, 15 Oct 2019 23:30:12 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:18218 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2389420AbfJPDaL (ORCPT ); Tue, 15 Oct 2019 23:30:11 -0400 Received: from pps.filterd (m0001303.ppops.net [127.0.0.1]) by m0001303.ppops.net (8.16.0.42/8.16.0.42) with SMTP id x9G3O8Ww022165 for ; Tue, 15 Oct 2019 20:30:09 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=facebook; bh=lEPArNIF6K2Bh3CL1lBez7BNxgoqJjl9PZQblW82ni8=; b=jnzANr73X9ThxvHG67C1YUZgMUFBH6F83InHNeFlwtmryBQhyrkVaCg/SqNLzT8ub/D1 SY92Sf1wsWj8+LuMjBQMApDYtSo8iun1uQ8MytsANnUNh+YidUo2YKAL/v6q5TaorXF3 WZrHRe1Rxk3VqLiWtauFnMAsdDNJtJpzQfc= Received: from mail.thefacebook.com (mailout.thefacebook.com [199.201.64.23]) by m0001303.ppops.net with ESMTP id 2vn6m8dec4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Tue, 15 Oct 2019 20:30:08 -0700 Received: from 2401:db00:12:909f:face:0:3:0 (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::126) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5; Tue, 15 Oct 2019 20:30:07 -0700 Received: by dev101.prn2.facebook.com (Postfix, from userid 137359) id 4313C861998; Tue, 15 Oct 2019 20:30:02 -0700 (PDT) Smtp-Origin-Hostprefix: dev From: Andrii Nakryiko Smtp-Origin-Hostname: dev101.prn2.facebook.com To: , , , CC: , , Andrii Nakryiko Smtp-Origin-Cluster: prn2c23 Subject: [PATCH v2 bpf-next 5/6] selftests/bpf: replace test_progs and test_maps w/ general rule Date: Tue, 15 Oct 2019 20:29:48 -0700 Message-ID: <20191016032949.1445888-6-andriin@fb.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191016032949.1445888-1-andriin@fb.com> References: <20191016032949.1445888-1-andriin@fb.com> X-FB-Internal: Safe MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,1.0.8 definitions=2019-10-16_01:2019-10-15,2019-10-16 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 phishscore=0 impostorscore=0 bulkscore=0 mlxlogscore=999 clxscore=1015 suspectscore=9 lowpriorityscore=0 spamscore=0 priorityscore=1501 malwarescore=0 mlxscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1908290000 definitions=main-1910160029 X-FB-Internal: deliver Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Define test runner generation meta-rule that codifies dependencies between test runner, its tests, and its dependent BPF programs. Use that for defining test_progs and test_maps test-runners. Also additionally define 2 flavors of test_progs: - alu32, which builds BPF programs with 32-bit registers codegen; - bpf_gcc, which build BPF programs using GCC, if it supports BPF target. Overall, this is accomplished through $(eval)'ing a set of generic rules, which defines Makefile targets dynamically at runtime. See comments explaining the need for 2 $(evals), though. For each test runner we have (test_maps and test_progs, currently), and, optionally, their flavors, the logic of build process is modeled as follows (using test_progs as an example): - all BPF objects are in progs/: - BPF object's .o file is built into output directory from corresponding progs/.c file; - all BPF objects in progs/*.c depend on all progs/*.h headers; - all BPF objects depend on bpf_*.h helpers from libbpf (but not libbpf archive). There is an extra rule to trigger bpf_helper_defs.h (re-)build, if it's not present/outdated); - build recipe for BPF object can be re-defined per test runner/flavor; - test files are built from prog_tests/*.c: - all such test file objects are built on individual file basis; - currently, every single test file depends on all BPF object files; this might be improved in follow up patches to do 1-to-1 dependency, but allowing to customize this per each individual test; - each test runner definition can specify a list of extra .c and .h files to be built along test files and test runner binary; all such headers are becoming automatic dependency of each test .c file; - due to test files sometimes embedding (using .incbin assembly directive) contents of some BPF objects at compilation time, which are expected to be in CWD of compiler, compilation for test file object does cd into test runner's output directory; to support this mode all the include paths are turned into absolute paths using $(abspath) make function; - prog_tests/test.h is automatically (re-)generated with an entry for each .c file in prog_tests/; - final test runner binary is linked together from test object files and extra object files, linking together libbpf's archive as well; - it's possible to specify extra "resource" files/targets, which will be copied into test runner output directory, if it differes from Makefile-wide $(OUTPUT). This is used to ensure btf_dump test cases and urandom_read binary is put into a test runner's CWD for tests to find them in runtime. For flavored test runners, their output directory is a subdirectory of common Makefile-wide $(OUTPUT) directory with flavor name used as subdirectory name. BPF objects targets might be reused between different test runners, so extra checks are employed to not double-define them. Similarly, we have redefinition guards for output directories and test headers. test_verifier follows slightly different patterns and is simple enough to not justify generalizing TEST_RUNNER_DEFINE/TEST_RUNNER_DEFINE_RULES further to accomodate these differences. Instead, rules for test_verifier are minimized and simplified, while preserving correctness of dependencies. N.B. There is a special rule override for default test_progs' test_xdp.o, which compiles it using native Clang target and passes result through llc's bpf target, to validate that this mixed mode still works for older BPF programs. With current set up, though, this rule causes make to emit the following warning, which is impossible to avoid without further complicating DEFINE_TEST_RUNNER_RULES just for the sake of avoiding a warning: Makefile:282: warning: overriding recipe for target `/data/users/andriin/linux/tools/testing/selftests/bpf/test_xdp.o' Makefile:277: warning: ignoring old recipe for target `/data/users/andriin/linux/tools/testing/selftests/bpf/test_xdp.o' Signed-off-by: Andrii Nakryiko --- tools/testing/selftests/bpf/.gitignore | 5 +- tools/testing/selftests/bpf/Makefile | 317 ++++++++++++++----------- 2 files changed, 186 insertions(+), 136 deletions(-) diff --git a/tools/testing/selftests/bpf/.gitignore b/tools/testing/selftests/bpf/.gitignore index 7470327edcfe..c51f356f84b5 100644 --- a/tools/testing/selftests/bpf/.gitignore +++ b/tools/testing/selftests/bpf/.gitignore @@ -7,7 +7,7 @@ FEATURE-DUMP.libbpf fixdep test_align test_dev_cgroup -test_progs +/test_progs* test_tcpbpf_user test_verifier_log feature @@ -33,9 +33,10 @@ test_tcpnotify_user test_libbpf test_tcp_check_syncookie_user test_sysctl -alu32 libbpf.pc libbpf.so.* test_hashmap test_btf_dump xdping +/alu32 +/bpf_gcc diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index fbced23935cc..2c5349c651ef 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -2,10 +2,12 @@ include ../../../../scripts/Kbuild.include include ../../../scripts/Makefile.arch -LIBDIR := ../../../lib +CURDIR := $(abspath .) +LIBDIR := $(abspath ../../../lib) BPFDIR := $(LIBDIR)/bpf -APIDIR := ../../../include/uapi -GENDIR := ../../../../include/generated +TOOLSDIR := $(abspath ../../../include) +APIDIR := $(TOOLSDIR)/uapi +GENDIR := $(abspath ../../../../include/generated) GENHDR := $(GENDIR)/autoconf.h ifneq ($(wildcard $(GENHDR)),) @@ -16,8 +18,9 @@ CLANG ?= clang LLC ?= llc LLVM_OBJCOPY ?= llvm-objcopy BPF_GCC ?= $(shell command -v bpf-gcc;) -CFLAGS += -g -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include \ - -Dbpf_prog_load=bpf_prog_test_load \ +CFLAGS += -g -Wall -O2 $(GENFLAGS) -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) \ + -I$(GENDIR) -I$(TOOLSDIR) -I$(CURDIR) \ + -Dbpf_prog_load=bpf_prog_test_load \ -Dbpf_load_program=bpf_test_load_program LDLIBS += -lcap -lelf -lrt -lpthread @@ -29,12 +32,6 @@ TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \ test_cgroup_attach xdping -BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c))) -TEST_GEN_FILES = $(BPF_OBJ_FILES) - -BTF_C_FILES = $(wildcard progs/btf_dump_test_case_*.c) -TEST_FILES = $(BTF_C_FILES) - # Also test sub-register code-gen if LLVM has eBPF v3 processor support which # contains both ALU32 and JMP32 instructions. SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \ @@ -42,13 +39,17 @@ SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \ $(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \ grep 'if w') ifneq ($(SUBREG_CODEGEN),) -TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES)) +TEST_GEN_PROGS += test_progs-alu32 endif +# Also test bpf-gcc, if present ifneq ($(BPF_GCC),) -TEST_GEN_FILES += $(patsubst %.o,bpf_gcc/%.o, $(BPF_OBJ_FILES)) +TEST_GEN_PROGS += test_progs-bpf_gcc endif +TEST_GEN_FILES = +TEST_FILES = + # Order correspond to 'make run_tests' order TEST_PROGS := test_kmod.sh \ test_libbpf.sh \ @@ -82,6 +83,8 @@ TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_use flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \ test_lirc_mode2_user +TEST_CUSTOM_PROGS = urandom_read + include ../lib.mk # Define simple and short `make test_progs`, `make test_sysctl`, etc targets @@ -94,21 +97,12 @@ $(notdir $(TEST_GEN_PROGS) \ $(TEST_GEN_PROGS_EXTENDED) \ $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ; -# NOTE: $(OUTPUT) won't get default value if used before lib.mk -TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read -all: $(TEST_CUSTOM_PROGS) - -$(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c +$(OUTPUT)/urandom_read: urandom_read.c $(CC) -o $@ $< -Wl,--build-id -$(OUTPUT)/test_stub.o: test_stub.c - $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) -c -o $@ $< - BPFOBJ := $(OUTPUT)/libbpf.a -$(TEST_GEN_PROGS): $(OUTPUT)/test_stub.o $(BPFOBJ) - -$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(OUTPUT)/libbpf.a +$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ) $(OUTPUT)/test_dev_cgroup: cgroup_helpers.c $(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c @@ -118,7 +112,6 @@ $(OUTPUT)/test_socket_cookie: cgroup_helpers.c $(OUTPUT)/test_sockmap: cgroup_helpers.c $(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c $(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c -$(OUTPUT)/test_progs: cgroup_helpers.c trace_helpers.c $(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c $(OUTPUT)/test_cgroup_storage: cgroup_helpers.c $(OUTPUT)/test_netcnt: cgroup_helpers.c @@ -134,6 +127,10 @@ force: $(BPFOBJ): force $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ +BPF_HELPERS := $(BPFDIR)/bpf_helper_defs.h $(wildcard $(BPFDIR)/bpf_*.h) +$(BPFDIR)/bpf_helper_defs.h: + $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ bpf_helper_defs.h + # Get Clang's default includes on this system, as opposed to those seen by # '-target bpf'. This fixes "missing" files on some architectures/distros, # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. @@ -144,10 +141,11 @@ define get_sys_includes $(shell $(1) -v -E - &1 \ | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') endef + CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) \ - -I. -I./include/uapi -I../../../include/uapi \ - -I$(BPFDIR) -I$(OUTPUT)/../usr/include + -I. -I./include/uapi -I$(APIDIR) \ + -I$(BPFDIR) -I$(abspath $(OUTPUT)/../usr/include) CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ -Wno-compare-distinct-pointer-types @@ -159,127 +157,178 @@ $(OUTPUT)/test_queue_map.o: test_queue_stack_map.h $(OUTPUT)/test_stack_map.o: test_queue_stack_map.h $(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h -$(OUTPUT)/test_progs.o: flow_dissector_load.h -TEST_PROGS_CFLAGS := -I. -I$(OUTPUT) -TEST_MAPS_CFLAGS := -I. -I$(OUTPUT) -TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier +# Build BPF object using Clang +# $1 - input .c file +# $2 - output .o file +# $3 - CFLAGS +# $4 - LDFLAGS +define CLANG_BPF_BUILD_RULE + ($(CLANG) $3 -O2 -target bpf -emit-llvm \ + -c $1 -o - || echo "BPF obj compilation failed") | \ + $(LLC) -march=bpf -mcpu=probe $4 -filetype=obj -o $2 +endef +# Similar to CLANG_BPF_BUILD_RULE, but using native Clang and bpf LLC +define CLANG_NATIVE_BPF_BUILD_RULE + ($(CLANG) $3 -O2 -emit-llvm \ + -c $1 -o - || echo "BPF obj compilation failed") | \ + $(LLC) -march=bpf -mcpu=probe $4 -filetype=obj -o $2 +endef +# Build BPF object using GCC +define GCC_BPF_BUILD_RULE + $(BPF_GCC) $3 $4 -O2 -c $1 -o $2 +endef + +# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on +# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. +# Parameters: +# $1 - test runner base binary name (e.g., test_progs) +# $2 - test runner extra "flavor" (e.g., alu32, gcc-bpf, etc) +define DEFINE_TEST_RUNNER + +TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 +TRUNNER_BINARY := $1$(if $2,-)$2 +TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ + $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) +TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ + $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) +TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) +TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h +TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ + $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))) + +# Evaluate rules now with extra TRUNNER_XXX variables above already defined +$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) -ifneq ($(SUBREG_CODEGEN),) -ALU32_BUILD_DIR = $(OUTPUT)/alu32 -TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32 -$(ALU32_BUILD_DIR): - mkdir -p $@ - -$(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read | $(ALU32_BUILD_DIR) - cp $< $@ - -$(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(OUTPUT)/libbpf.a\ - $(ALU32_BUILD_DIR)/urandom_read \ - | $(ALU32_BUILD_DIR) - $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) \ - -o $(ALU32_BUILD_DIR)/test_progs_32 \ - test_progs.c test_stub.c cgroup_helpers.c trace_helpers.c prog_tests/*.c \ - $(OUTPUT)/libbpf.a $(LDLIBS) - -$(ALU32_BUILD_DIR)/test_progs_32: $(PROG_TESTS_H) -$(ALU32_BUILD_DIR)/test_progs_32: prog_tests/*.c - -$(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR)/test_progs_32 \ - | $(ALU32_BUILD_DIR) - ($(CLANG) $(BPF_CFLAGS) $(CLANG_CFLAGS) -O2 -target bpf -emit-llvm \ - -c $< -o - || echo "clang failed") | \ - $(LLC) -march=bpf -mcpu=probe -mattr=+alu32 $(LLC_FLAGS) \ - -filetype=obj -o $@ +endef + +# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and +# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: +# $1 - test runner base binary name (e.g., test_progs) +# $2 - test runner extra "flavor" (e.g., alu32, gcc-bpf, etc) +define DEFINE_TEST_RUNNER_RULES + +ifeq ($($(TRUNNER_OUTPUT)-dir),) +$(TRUNNER_OUTPUT)-dir := y +$(TRUNNER_OUTPUT): + mkdir -p $$@ endif -ifneq ($(BPF_GCC),) -GCC_SYS_INCLUDES = $(call get_sys_includes,gcc) -IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - /dev/null | \ + sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \ + ) > $$@) +endif + +# compile individual test files +# Note: we cd into output directory to ensure embedded BPF object is found +$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ + $(TRUNNER_TESTS_DIR)/%.c \ + $(TRUNNER_EXTRA_HDRS) \ + $(TRUNNER_BPF_OBJS) \ + $$(BPFOBJ) | $(TRUNNER_OUTPUT) + cd $$(@D) && $$(CC) $$(CFLAGS) $$(LDLIBS) -c $(CURDIR)/$$< -o $$(@F) + +$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ + %.c \ + $(TRUNNER_EXTRA_HDRS) \ + $(TRUNNER_TESTS_HDR) \ + $$(BPFOBJ) | $(TRUNNER_OUTPUT) + $$(CC) $$(CFLAGS) $$(LDLIBS) -c $$< -o $$@ + +$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) +ifneq ($2,) + # only copy extra resources if in flavored build + cp -a $$^ $(TRUNNER_OUTPUT)/ endif +$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ + $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ + | $(TRUNNER_BINARY)-extras + $$(CC) $$(CFLAGS) $$(LDLIBS) $$(filter %.a %.o,$$^) -o $$@ + +endef + +# Define test_progs test runner. +TRUNNER_TESTS_DIR := prog_tests +TRUNNER_BPF_PROGS_DIR := progs +TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \ + flow_dissector_load.h +TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \ + $(wildcard progs/btf_dump_test_case_*.c) +TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE +TRUNNER_BPF_CFLAGS := -I. -I$(OUTPUT) $(BPF_CFLAGS) $(CLANG_CFLAGS) +TRUNNER_BPF_LDFLAGS := +$(eval $(call DEFINE_TEST_RUNNER,test_progs)) + # Have one program compiled without "-target bpf" to test whether libbpf loads # it successfully $(OUTPUT)/test_xdp.o: progs/test_xdp.c - ($(CLANG) $(BPF_CFLAGS) $(CLANG_CFLAGS) -O2 -emit-llvm -c $< -o - || \ - echo "clang failed") | \ + ($(CLANG) $(BPF_CFLAGS) $(CLANG_CFLAGS) -O2 -emit-llvm \ + -c $< -o - || echo "BPF obj compilation failed") | \ $(LLC) -march=bpf -mcpu=probe $(LLC_FLAGS) -filetype=obj -o $@ -# libbpf has to be built before BPF programs due to bpf_helper_defs.h -$(OUTPUT)/%.o: progs/%.c | $(BPFOBJ) - ($(CLANG) $(BPF_CFLAGS) $(CLANG_CFLAGS) -O2 -target bpf -emit-llvm \ - -c $< -o - || echo "clang failed") | \ - $(LLC) -march=bpf -mcpu=probe $(LLC_FLAGS) -filetype=obj -o $@ +# Define test_progs-alu32 test runner. +ifneq ($(SUBREG_CODEGEN),) +TRUNNER_BPF_LDFLAGS += -mattr=+alu32 +$(eval $(call DEFINE_TEST_RUNNER,test_progs,alu32)) +endif -PROG_TESTS_DIR = $(OUTPUT)/prog_tests -$(PROG_TESTS_DIR): - mkdir -p $@ -PROG_TESTS_H := $(PROG_TESTS_DIR)/tests.h -PROG_TESTS_FILES := $(wildcard prog_tests/*.c) -test_progs.c: $(PROG_TESTS_H) -$(OUTPUT)/test_progs: CFLAGS += $(TEST_PROGS_CFLAGS) -$(OUTPUT)/test_progs: test_progs.c $(PROG_TESTS_FILES) | $(OUTPUT)/test_attach_probe.o $(PROG_TESTS_H) -$(PROG_TESTS_H): $(PROG_TESTS_FILES) | $(PROG_TESTS_DIR) - $(shell ( cd prog_tests/; \ - echo '/* Generated header, do not edit */'; \ - ls *.c 2> /dev/null | \ - sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \ - ) > $(PROG_TESTS_H)) - -MAP_TESTS_DIR = $(OUTPUT)/map_tests -$(MAP_TESTS_DIR): - mkdir -p $@ -MAP_TESTS_H := $(MAP_TESTS_DIR)/tests.h -MAP_TESTS_FILES := $(wildcard map_tests/*.c) -test_maps.c: $(MAP_TESTS_H) -$(OUTPUT)/test_maps: CFLAGS += $(TEST_MAPS_CFLAGS) -$(OUTPUT)/test_maps: test_maps.c $(MAP_TESTS_FILES) | $(MAP_TESTS_H) -$(MAP_TESTS_H): $(MAP_TESTS_FILES) | $(MAP_TESTS_DIR) - $(shell ( cd map_tests/; \ - echo '/* Generated header, do not edit */'; \ - ls *.c 2> /dev/null | \ - sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \ - ) > $(MAP_TESTS_H)) - -VERIFIER_TESTS_DIR = $(OUTPUT)/verifier -$(VERIFIER_TESTS_DIR): - mkdir -p $@ -VERIFIER_TESTS_H := $(VERIFIER_TESTS_DIR)/tests.h -VERIFIER_TEST_FILES := $(wildcard verifier/*.c) -test_verifier.c: $(VERIFIER_TESTS_H) -$(OUTPUT)/test_verifier: CFLAGS += $(TEST_VERIFIER_CFLAGS) -$(OUTPUT)/test_verifier: test_verifier.c | $(VERIFIER_TEST_FILES) $(VERIFIER_TESTS_H) -$(VERIFIER_TESTS_H): $(VERIFIER_TEST_FILES) | $(VERIFIER_TESTS_DIR) +# Define test_progs BPF-GCC-flavored test runner. +ifneq ($(BPF_GCC),) +IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - /dev/null | \ - sed -e 's@\(.*\)@#include \"\1\"@'; \ + ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ echo '#endif' \ - ) > $(VERIFIER_TESTS_H)) - -EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) $(BPF_GCC_BUILD_DIR) \ - $(VERIFIER_TESTS_H) $(PROG_TESTS_H) $(MAP_TESTS_H) \ - feature + ) > verifier/tests.h) +$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) + $(CC) $(CFLAGS) $(LDLIBS) $(filter %.a %.o %.c,$^) -o $@ + +EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) \ + prog_tests/tests.h map_tests/tests.h verifier/tests.h \ + feature $(OUTPUT)/*.o $(OUTPUT)/alu32 $(OUTPUT)/bpf_gcc \ + $(OUTPUT)/native -- 2.17.1