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