1# SPDX-License-Identifier: GPL-2.0 2include ../../../../scripts/Kbuild.include 3include ../../../scripts/Makefile.arch 4 5CURDIR := $(abspath .) 6TOOLSDIR := $(abspath ../../..) 7LIBDIR := $(TOOLSDIR)/lib 8BPFDIR := $(LIBDIR)/bpf 9TOOLSINCDIR := $(TOOLSDIR)/include 10BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool 11APIDIR := $(TOOLSINCDIR)/uapi 12GENDIR := $(abspath ../../../../include/generated) 13GENHDR := $(GENDIR)/autoconf.h 14 15ifneq ($(wildcard $(GENHDR)),) 16 GENFLAGS := -DHAVE_GENHDR 17endif 18 19CLANG ?= clang 20LLC ?= llc 21LLVM_OBJCOPY ?= llvm-objcopy 22BPF_GCC ?= $(shell command -v bpf-gcc;) 23CFLAGS += -g -Wall -O2 $(GENFLAGS) -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) \ 24 -I$(GENDIR) -I$(TOOLSINCDIR) -I$(CURDIR) \ 25 -Dbpf_prog_load=bpf_prog_test_load \ 26 -Dbpf_load_program=bpf_test_load_program 27LDLIBS += -lcap -lelf -lz -lrt -lpthread 28 29# Order correspond to 'make run_tests' order 30TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ 31 test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \ 32 test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \ 33 test_cgroup_storage \ 34 test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \ 35 test_cgroup_attach test_progs-no_alu32 36 37# Also test bpf-gcc, if present 38ifneq ($(BPF_GCC),) 39TEST_GEN_PROGS += test_progs-bpf_gcc 40endif 41 42TEST_GEN_FILES = 43TEST_FILES = test_lwt_ip_encap.o \ 44 test_tc_edt.o 45 46# Order correspond to 'make run_tests' order 47TEST_PROGS := test_kmod.sh \ 48 test_xdp_redirect.sh \ 49 test_xdp_meta.sh \ 50 test_xdp_veth.sh \ 51 test_offload.py \ 52 test_sock_addr.sh \ 53 test_tunnel.sh \ 54 test_lwt_seg6local.sh \ 55 test_lirc_mode2.sh \ 56 test_skb_cgroup_id.sh \ 57 test_flow_dissector.sh \ 58 test_xdp_vlan_mode_generic.sh \ 59 test_xdp_vlan_mode_native.sh \ 60 test_lwt_ip_encap.sh \ 61 test_tcp_check_syncookie.sh \ 62 test_tc_tunnel.sh \ 63 test_tc_edt.sh \ 64 test_xdping.sh \ 65 test_bpftool_build.sh 66 67TEST_PROGS_EXTENDED := with_addr.sh \ 68 with_tunnels.sh \ 69 tcp_client.py \ 70 tcp_server.py \ 71 test_xdp_vlan.sh 72 73# Compile but not part of 'make run_tests' 74TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \ 75 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \ 76 test_lirc_mode2_user xdping test_cpp 77 78TEST_CUSTOM_PROGS = urandom_read 79 80# Emit succinct information message describing current building step 81# $1 - generic step name (e.g., CC, LINK, etc); 82# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; 83# $3 - target (assumed to be file); only file name will be emitted; 84# $4 - optional extra arg, emitted as-is, if provided. 85ifeq ($(V),1) 86msg = 87else 88msg = @$(info $(1)$(if $(2), [$(2)]) $(notdir $(3)))$(if $(4), $(4)) 89endif 90 91# override lib.mk's default rules 92OVERRIDE_TARGETS := 1 93override define CLEAN 94 $(call msg, CLEAN) 95 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN) 96endef 97 98include ../lib.mk 99 100# Define simple and short `make test_progs`, `make test_sysctl`, etc targets 101# to build individual tests. 102# NOTE: Semicolon at the end is critical to override lib.mk's default static 103# rule for binaries. 104$(notdir $(TEST_GEN_PROGS) \ 105 $(TEST_PROGS) \ 106 $(TEST_PROGS_EXTENDED) \ 107 $(TEST_GEN_PROGS_EXTENDED) \ 108 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ; 109 110$(OUTPUT)/%:%.c 111 $(call msg, BINARY,,$@) 112 $(LINK.c) $^ $(LDLIBS) -o $@ 113 114$(OUTPUT)/urandom_read: urandom_read.c 115 $(call msg, BINARY,,$@) 116 $(CC) -o $@ $< -Wl,--build-id 117 118$(OUTPUT)/test_stub.o: test_stub.c 119 $(call msg, CC,,$@) 120 $(CC) -c $(CFLAGS) -o $@ $< 121 122BPFOBJ := $(OUTPUT)/libbpf.a 123 124$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ) 125 126$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c 127$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c 128$(OUTPUT)/test_sock: cgroup_helpers.c 129$(OUTPUT)/test_sock_addr: cgroup_helpers.c 130$(OUTPUT)/test_socket_cookie: cgroup_helpers.c 131$(OUTPUT)/test_sockmap: cgroup_helpers.c 132$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c 133$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c 134$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c 135$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c 136$(OUTPUT)/test_netcnt: cgroup_helpers.c 137$(OUTPUT)/test_sock_fields: cgroup_helpers.c 138$(OUTPUT)/test_sysctl: cgroup_helpers.c 139$(OUTPUT)/test_cgroup_attach: cgroup_helpers.c 140 141.PHONY: force 142 143# force a rebuild of BPFOBJ when its dependencies are updated 144force: 145 146DEFAULT_BPFTOOL := $(OUTPUT)/tools/usr/local/sbin/bpftool 147BPFTOOL ?= $(DEFAULT_BPFTOOL) 148 149$(DEFAULT_BPFTOOL): force 150 $(MAKE) -C $(BPFTOOLDIR) DESTDIR=$(OUTPUT)/tools install 151 152$(BPFOBJ): force 153 $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ 154 155BPF_HELPERS := $(BPFDIR)/bpf_helper_defs.h $(wildcard $(BPFDIR)/bpf_*.h) 156$(BPFDIR)/bpf_helper_defs.h: 157 $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ bpf_helper_defs.h 158 159# Get Clang's default includes on this system, as opposed to those seen by 160# '-target bpf'. This fixes "missing" files on some architectures/distros, 161# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 162# 163# Use '-idirafter': Don't interfere with include mechanics except where the 164# build would have failed anyways. 165define get_sys_includes 166$(shell $(1) -v -E - </dev/null 2>&1 \ 167 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') 168endef 169 170# Determine target endianness. 171IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ 172 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 173MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 174 175CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) 176BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 177 -I. -I./include/uapi -I$(APIDIR) \ 178 -I$(BPFDIR) -I$(abspath $(OUTPUT)/../usr/include) 179 180CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ 181 -Wno-compare-distinct-pointer-types 182 183$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 184$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 185 186$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 187 188# Build BPF object using Clang 189# $1 - input .c file 190# $2 - output .o file 191# $3 - CFLAGS 192# $4 - LDFLAGS 193define CLANG_BPF_BUILD_RULE 194 $(call msg, CLANG-LLC,$(TRUNNER_BINARY),$2) 195 ($(CLANG) $3 -O2 -target bpf -emit-llvm \ 196 -c $1 -o - || echo "BPF obj compilation failed") | \ 197 $(LLC) -mattr=dwarfris -march=bpf -mcpu=probe $4 -filetype=obj -o $2 198endef 199# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 200define CLANG_NOALU32_BPF_BUILD_RULE 201 $(call msg, CLANG-LLC,$(TRUNNER_BINARY),$2) 202 ($(CLANG) $3 -O2 -target bpf -emit-llvm \ 203 -c $1 -o - || echo "BPF obj compilation failed") | \ 204 $(LLC) -march=bpf -mcpu=v2 $4 -filetype=obj -o $2 205endef 206# Similar to CLANG_BPF_BUILD_RULE, but using native Clang and bpf LLC 207define CLANG_NATIVE_BPF_BUILD_RULE 208 $(call msg, CLANG-BPF,$(TRUNNER_BINARY),$2) 209 ($(CLANG) $3 -O2 -emit-llvm \ 210 -c $1 -o - || echo "BPF obj compilation failed") | \ 211 $(LLC) -march=bpf -mcpu=probe $4 -filetype=obj -o $2 212endef 213# Build BPF object using GCC 214define GCC_BPF_BUILD_RULE 215 $(call msg, GCC-BPF,$(TRUNNER_BINARY),$2) 216 $(BPF_GCC) $3 $4 -O2 -c $1 -o $2 217endef 218 219SKEL_BLACKLIST := btf__% test_pinning_invalid.c 220 221# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 222# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 223# Parameters: 224# $1 - test runner base binary name (e.g., test_progs) 225# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 226define DEFINE_TEST_RUNNER 227 228TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 229TRUNNER_BINARY := $1$(if $2,-)$2 230TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 231 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 232TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 233 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 234TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 235TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 236TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 237TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS)) 238TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 239 $$(filter-out $(SKEL_BLACKLIST), \ 240 $$(TRUNNER_BPF_SRCS))) 241 242# Evaluate rules now with extra TRUNNER_XXX variables above already defined 243$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 244 245endef 246 247# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 248# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 249# $1 - test runner base binary name (e.g., test_progs) 250# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 251define DEFINE_TEST_RUNNER_RULES 252 253ifeq ($($(TRUNNER_OUTPUT)-dir),) 254$(TRUNNER_OUTPUT)-dir := y 255$(TRUNNER_OUTPUT): 256 mkdir -p $$@ 257endif 258 259# ensure we set up BPF objects generation rule just once for a given 260# input/output directory combination 261ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 262$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 263$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 264 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 265 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 266 $$(BPF_HELPERS) | $(TRUNNER_OUTPUT) 267 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 268 $(TRUNNER_BPF_CFLAGS), \ 269 $(TRUNNER_BPF_LDFLAGS)) 270 271$(TRUNNER_BPF_SKELS): $(TRUNNER_OUTPUT)/%.skel.h: \ 272 $(TRUNNER_OUTPUT)/%.o \ 273 | $(BPFTOOL) $(TRUNNER_OUTPUT) 274 $$(call msg, GEN-SKEL,$(TRUNNER_BINARY),$$@) 275 $$(BPFTOOL) gen skeleton $$< > $$@ 276endif 277 278# ensure we set up tests.h header generation rule just once 279ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 280$(TRUNNER_TESTS_DIR)-tests-hdr := y 281$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 282 $$(call msg, TEST-HDR,$(TRUNNER_BINARY),$$@) 283 $$(shell ( cd $(TRUNNER_TESTS_DIR); \ 284 echo '/* Generated header, do not edit */'; \ 285 ls *.c 2> /dev/null | \ 286 sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \ 287 ) > $$@) 288endif 289 290# compile individual test files 291# Note: we cd into output directory to ensure embedded BPF object is found 292$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 293 $(TRUNNER_TESTS_DIR)/%.c \ 294 $(TRUNNER_EXTRA_HDRS) \ 295 $(TRUNNER_BPF_OBJS) \ 296 $(TRUNNER_BPF_SKELS) \ 297 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 298 $$(call msg, TEST-OBJ,$(TRUNNER_BINARY),$$@) 299 cd $$(@D) && $$(CC) $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 300 301$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 302 %.c \ 303 $(TRUNNER_EXTRA_HDRS) \ 304 $(TRUNNER_TESTS_HDR) \ 305 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 306 $$(call msg, EXTRA-OBJ,$(TRUNNER_BINARY),$$@) 307 $$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 308 309# only copy extra resources if in flavored build 310$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 311ifneq ($2,) 312 $$(call msg, EXTRAS-CP,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 313 cp -a $$^ $(TRUNNER_OUTPUT)/ 314endif 315 316$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 317 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 318 | $(TRUNNER_BINARY)-extras 319 $$(call msg, BINARY,,$$@) 320 $$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@ 321 322endef 323 324# Define test_progs test runner. 325TRUNNER_TESTS_DIR := prog_tests 326TRUNNER_BPF_PROGS_DIR := progs 327TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \ 328 flow_dissector_load.h 329TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \ 330 $(wildcard progs/btf_dump_test_case_*.c) 331TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 332TRUNNER_BPF_CFLAGS := -I. -I$(OUTPUT) $(BPF_CFLAGS) $(CLANG_CFLAGS) 333TRUNNER_BPF_LDFLAGS := -mattr=+alu32 334$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 335 336# Define test_progs-no_alu32 test runner. 337TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 338TRUNNER_BPF_LDFLAGS := 339$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 340 341# Define test_progs BPF-GCC-flavored test runner. 342ifneq ($(BPF_GCC),) 343TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 344TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc) 345TRUNNER_BPF_LDFLAGS := 346$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 347endif 348 349# Define test_maps test runner. 350TRUNNER_TESTS_DIR := map_tests 351TRUNNER_BPF_PROGS_DIR := progs 352TRUNNER_EXTRA_SOURCES := test_maps.c 353TRUNNER_EXTRA_FILES := 354TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 355TRUNNER_BPF_CFLAGS := 356TRUNNER_BPF_LDFLAGS := 357$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 358 359# Define test_verifier test runner. 360# It is much simpler than test_maps/test_progs and sufficiently different from 361# them (e.g., test.h is using completely pattern), that it's worth just 362# explicitly defining all the rules explicitly. 363verifier/tests.h: verifier/*.c 364 $(shell ( cd verifier/; \ 365 echo '/* Generated header, do not edit */'; \ 366 echo '#ifdef FILL_ARRAY'; \ 367 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 368 echo '#endif' \ 369 ) > verifier/tests.h) 370$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 371 $(call msg, BINARY,,$@) 372 $(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 373 374# Make sure we are able to include and link libbpf against c++. 375$(OUTPUT)/test_cpp: test_cpp.cpp $(BPFOBJ) 376 $(call msg, CXX,,$@) 377 $(CXX) $(CFLAGS) $^ $(LDLIBS) -o $@ 378 379EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) \ 380 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 381 feature $(OUTPUT)/*.o $(OUTPUT)/no_alu32 $(OUTPUT)/bpf_gcc \ 382 tools *.skel.h 383