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 -rdynamic -Wall -O2 $(GENFLAGS) -I$(CURDIR) -I$(APIDIR) \ 24 -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) -I$(TOOLSINCDIR) \ 25 -Dbpf_prog_load=bpf_prog_test_load \ 26 -Dbpf_load_program=bpf_test_load_program 27LDLIBS += -lcap -lelf -lz -lrt -lpthread 28 29# Order correspond to 'make run_tests' order 30TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ 31 test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \ 32 test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \ 33 test_cgroup_storage \ 34 test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \ 35 test_progs-no_alu32 36 37# Also test bpf-gcc, if present 38ifneq ($(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 test_bpftool.sh 67 68TEST_PROGS_EXTENDED := with_addr.sh \ 69 with_tunnels.sh \ 70 tcp_client.py \ 71 tcp_server.py \ 72 test_xdp_vlan.sh 73 74# Compile but not part of 'make run_tests' 75TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \ 76 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \ 77 test_lirc_mode2_user xdping test_cpp runqslower 78 79TEST_CUSTOM_PROGS = urandom_read 80 81# Emit succinct information message describing current building step 82# $1 - generic step name (e.g., CC, LINK, etc); 83# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; 84# $3 - target (assumed to be file); only file name will be emitted; 85# $4 - optional extra arg, emitted as-is, if provided. 86ifeq ($(V),1) 87Q = 88msg = 89else 90Q = @ 91msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))"; 92MAKEFLAGS += --no-print-directory 93submake_extras := feature_display=0 94endif 95 96# override lib.mk's default rules 97OVERRIDE_TARGETS := 1 98override define CLEAN 99 $(call msg,CLEAN) 100 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN) 101endef 102 103include ../lib.mk 104 105SCRATCH_DIR := $(OUTPUT)/tools 106BUILD_DIR := $(SCRATCH_DIR)/build 107INCLUDE_DIR := $(SCRATCH_DIR)/include 108BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a 109 110# Define simple and short `make test_progs`, `make test_sysctl`, etc targets 111# to build individual tests. 112# NOTE: Semicolon at the end is critical to override lib.mk's default static 113# rule for binaries. 114$(notdir $(TEST_GEN_PROGS) \ 115 $(TEST_PROGS) \ 116 $(TEST_PROGS_EXTENDED) \ 117 $(TEST_GEN_PROGS_EXTENDED) \ 118 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ; 119 120$(OUTPUT)/%:%.c 121 $(call msg,BINARY,,$@) 122 $(LINK.c) $^ $(LDLIBS) -o $@ 123 124$(OUTPUT)/urandom_read: urandom_read.c 125 $(call msg,BINARY,,$@) 126 $(CC) $(LDFLAGS) -o $@ $< $(LDLIBS) -Wl,--build-id 127 128$(OUTPUT)/test_stub.o: test_stub.c $(BPFOBJ) 129 $(call msg,CC,,$@) 130 $(CC) -c $(CFLAGS) -o $@ $< 131 132VMLINUX_BTF_PATHS := $(abspath ../../../../vmlinux) \ 133 /sys/kernel/btf/vmlinux \ 134 /boot/vmlinux-$(shell uname -r) 135VMLINUX_BTF:= $(firstword $(wildcard $(VMLINUX_BTF_PATHS))) 136$(OUTPUT)/runqslower: $(BPFOBJ) 137 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ 138 OUTPUT=$(SCRATCH_DIR)/ VMLINUX_BTF=$(VMLINUX_BTF) \ 139 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) 140 141$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ) 142 143$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c 144$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c 145$(OUTPUT)/test_sock: cgroup_helpers.c 146$(OUTPUT)/test_sock_addr: cgroup_helpers.c 147$(OUTPUT)/test_socket_cookie: cgroup_helpers.c 148$(OUTPUT)/test_sockmap: cgroup_helpers.c 149$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c 150$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c 151$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c 152$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c 153$(OUTPUT)/test_netcnt: cgroup_helpers.c 154$(OUTPUT)/test_sock_fields: cgroup_helpers.c 155$(OUTPUT)/test_sysctl: cgroup_helpers.c 156 157DEFAULT_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool 158BPFTOOL ?= $(DEFAULT_BPFTOOL) 159$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 160 $(BPFOBJ) | $(BUILD_DIR)/bpftool 161 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 162 OUTPUT=$(BUILD_DIR)/bpftool/ \ 163 prefix= DESTDIR=$(SCRATCH_DIR)/ install 164 165$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 166 ../../../include/uapi/linux/bpf.h \ 167 | $(INCLUDE_DIR) $(BUILD_DIR)/libbpf 168 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 169 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 170 171$(BUILD_DIR)/libbpf $(BUILD_DIR)/bpftool $(INCLUDE_DIR): 172 $(call msg,MKDIR,,$@) 173 mkdir -p $@ 174 175# Get Clang's default includes on this system, as opposed to those seen by 176# '-target bpf'. This fixes "missing" files on some architectures/distros, 177# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 178# 179# Use '-idirafter': Don't interfere with include mechanics except where the 180# build would have failed anyways. 181define get_sys_includes 182$(shell $(1) -v -E - </dev/null 2>&1 \ 183 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') 184endef 185 186# Determine target endianness. 187IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ 188 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 189MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 190 191CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) 192BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 193 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(CURDIR)/include/uapi \ 194 -I$(APIDIR) -I$(abspath $(OUTPUT)/../usr/include) 195 196CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ 197 -Wno-compare-distinct-pointer-types 198 199$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 200$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 201 202$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 203 204# Build BPF object using Clang 205# $1 - input .c file 206# $2 - output .o file 207# $3 - CFLAGS 208# $4 - LDFLAGS 209define CLANG_BPF_BUILD_RULE 210 $(call msg,CLNG-LLC,$(TRUNNER_BINARY),$2) 211 ($(CLANG) $3 -O2 -target bpf -emit-llvm \ 212 -c $1 -o - || echo "BPF obj compilation failed") | \ 213 $(LLC) -mattr=dwarfris -march=bpf -mcpu=v3 $4 -filetype=obj -o $2 214endef 215# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 216define CLANG_NOALU32_BPF_BUILD_RULE 217 $(call msg,CLNG-LLC,$(TRUNNER_BINARY),$2) 218 ($(CLANG) $3 -O2 -target bpf -emit-llvm \ 219 -c $1 -o - || echo "BPF obj compilation failed") | \ 220 $(LLC) -march=bpf -mcpu=v2 $4 -filetype=obj -o $2 221endef 222# Similar to CLANG_BPF_BUILD_RULE, but using native Clang and bpf LLC 223define CLANG_NATIVE_BPF_BUILD_RULE 224 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 225 ($(CLANG) $3 -O2 -emit-llvm \ 226 -c $1 -o - || echo "BPF obj compilation failed") | \ 227 $(LLC) -march=bpf -mcpu=v3 $4 -filetype=obj -o $2 228endef 229# Build BPF object using GCC 230define GCC_BPF_BUILD_RULE 231 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2) 232 $(BPF_GCC) $3 $4 -O2 -c $1 -o $2 233endef 234 235SKEL_BLACKLIST := btf__% test_pinning_invalid.c 236 237# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 238# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 239# Parameters: 240# $1 - test runner base binary name (e.g., test_progs) 241# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 242define DEFINE_TEST_RUNNER 243 244TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 245TRUNNER_BINARY := $1$(if $2,-)$2 246TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 247 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 248TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 249 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 250TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 251TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 252TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 253TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS)) 254TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 255 $$(filter-out $(SKEL_BLACKLIST), \ 256 $$(TRUNNER_BPF_SRCS))) 257 258# Evaluate rules now with extra TRUNNER_XXX variables above already defined 259$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 260 261endef 262 263# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 264# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 265# $1 - test runner base binary name (e.g., test_progs) 266# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 267define DEFINE_TEST_RUNNER_RULES 268 269ifeq ($($(TRUNNER_OUTPUT)-dir),) 270$(TRUNNER_OUTPUT)-dir := y 271$(TRUNNER_OUTPUT): 272 $$(call msg,MKDIR,,$$@) 273 mkdir -p $$@ 274endif 275 276# ensure we set up BPF objects generation rule just once for a given 277# input/output directory combination 278ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 279$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 280$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 281 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 282 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 283 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 284 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 285 $(TRUNNER_BPF_CFLAGS), \ 286 $(TRUNNER_BPF_LDFLAGS)) 287 288$(TRUNNER_BPF_SKELS): $(TRUNNER_OUTPUT)/%.skel.h: \ 289 $(TRUNNER_OUTPUT)/%.o \ 290 | $(BPFTOOL) $(TRUNNER_OUTPUT) 291 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 292 $$(BPFTOOL) gen skeleton $$< > $$@ 293endif 294 295# ensure we set up tests.h header generation rule just once 296ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 297$(TRUNNER_TESTS_DIR)-tests-hdr := y 298$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 299 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 300 $$(shell ( cd $(TRUNNER_TESTS_DIR); \ 301 echo '/* Generated header, do not edit */'; \ 302 ls *.c 2> /dev/null | \ 303 sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \ 304 ) > $$@) 305endif 306 307# compile individual test files 308# Note: we cd into output directory to ensure embedded BPF object is found 309$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 310 $(TRUNNER_TESTS_DIR)/%.c \ 311 $(TRUNNER_EXTRA_HDRS) \ 312 $(TRUNNER_BPF_OBJS) \ 313 $(TRUNNER_BPF_SKELS) \ 314 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 315 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 316 cd $$(@D) && $$(CC) $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 317 318$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 319 %.c \ 320 $(TRUNNER_EXTRA_HDRS) \ 321 $(TRUNNER_TESTS_HDR) \ 322 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 323 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 324 $$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 325 326# only copy extra resources if in flavored build 327$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 328ifneq ($2,) 329 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 330 cp -a $$^ $(TRUNNER_OUTPUT)/ 331endif 332 333$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 334 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 335 | $(TRUNNER_BINARY)-extras 336 $$(call msg,BINARY,,$$@) 337 $$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@ 338 339endef 340 341# Define test_progs test runner. 342TRUNNER_TESTS_DIR := prog_tests 343TRUNNER_BPF_PROGS_DIR := progs 344TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \ 345 flow_dissector_load.h 346TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \ 347 $(wildcard progs/btf_dump_test_case_*.c) 348TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 349TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 350TRUNNER_BPF_LDFLAGS := -mattr=+alu32 351$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 352 353# Define test_progs-no_alu32 test runner. 354TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 355TRUNNER_BPF_LDFLAGS := 356$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 357 358# Define test_progs BPF-GCC-flavored test runner. 359ifneq ($(BPF_GCC),) 360TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 361TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc) 362TRUNNER_BPF_LDFLAGS := 363$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 364endif 365 366# Define test_maps test runner. 367TRUNNER_TESTS_DIR := map_tests 368TRUNNER_BPF_PROGS_DIR := progs 369TRUNNER_EXTRA_SOURCES := test_maps.c 370TRUNNER_EXTRA_FILES := 371TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 372TRUNNER_BPF_CFLAGS := 373TRUNNER_BPF_LDFLAGS := 374$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 375 376# Define test_verifier test runner. 377# It is much simpler than test_maps/test_progs and sufficiently different from 378# them (e.g., test.h is using completely pattern), that it's worth just 379# explicitly defining all the rules explicitly. 380verifier/tests.h: verifier/*.c 381 $(shell ( cd verifier/; \ 382 echo '/* Generated header, do not edit */'; \ 383 echo '#ifdef FILL_ARRAY'; \ 384 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 385 echo '#endif' \ 386 ) > verifier/tests.h) 387$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 388 $(call msg,BINARY,,$@) 389 $(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 390 391# Make sure we are able to include and link libbpf against c++. 392$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 393 $(call msg,CXX,,$@) 394 $(CXX) $(CFLAGS) $^ $(LDLIBS) -o $@ 395 396EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) \ 397 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 398 feature \ 399 $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32 bpf_gcc) 400