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