1# SPDX-License-Identifier: GPL-2.0 2include ../../../build/Build.include 3include ../../../scripts/Makefile.arch 4include ../../../scripts/Makefile.include 5 6CXX ?= $(CROSS_COMPILE)g++ 7 8CURDIR := $(abspath .) 9TOOLSDIR := $(abspath ../../..) 10LIBDIR := $(TOOLSDIR)/lib 11BPFDIR := $(LIBDIR)/bpf 12TOOLSINCDIR := $(TOOLSDIR)/include 13BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool 14APIDIR := $(TOOLSINCDIR)/uapi 15GENDIR := $(abspath ../../../../include/generated) 16GENHDR := $(GENDIR)/autoconf.h 17 18ifneq ($(wildcard $(GENHDR)),) 19 GENFLAGS := -DHAVE_GENHDR 20endif 21 22BPF_GCC ?= $(shell command -v bpf-gcc;) 23SAN_CFLAGS ?= 24CFLAGS += -g -O0 -rdynamic -Wall -Werror $(GENFLAGS) $(SAN_CFLAGS) \ 25 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \ 26 -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT) 27LDFLAGS += $(SAN_CFLAGS) 28LDLIBS += -lcap -lelf -lz -lrt -lpthread 29 30# Silence some warnings when compiled with clang 31ifneq ($(LLVM),) 32CFLAGS += -Wno-unused-command-line-argument 33endif 34 35# Order correspond to 'make run_tests' order 36TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ 37 test_verifier_log test_dev_cgroup \ 38 test_sock test_sockmap get_cgroup_id_user \ 39 test_cgroup_storage \ 40 test_tcpnotify_user test_sysctl \ 41 test_progs-no_alu32 42 43# Also test bpf-gcc, if present 44ifneq ($(BPF_GCC),) 45TEST_GEN_PROGS += test_progs-bpf_gcc 46endif 47 48TEST_GEN_FILES = test_lwt_ip_encap.o test_tc_edt.o 49TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c) 50 51# Order correspond to 'make run_tests' order 52TEST_PROGS := test_kmod.sh \ 53 test_xdp_redirect.sh \ 54 test_xdp_redirect_multi.sh \ 55 test_xdp_meta.sh \ 56 test_xdp_veth.sh \ 57 test_offload.py \ 58 test_sock_addr.sh \ 59 test_tunnel.sh \ 60 test_lwt_seg6local.sh \ 61 test_lirc_mode2.sh \ 62 test_skb_cgroup_id.sh \ 63 test_flow_dissector.sh \ 64 test_xdp_vlan_mode_generic.sh \ 65 test_xdp_vlan_mode_native.sh \ 66 test_lwt_ip_encap.sh \ 67 test_tcp_check_syncookie.sh \ 68 test_tc_tunnel.sh \ 69 test_tc_edt.sh \ 70 test_xdping.sh \ 71 test_bpftool_build.sh \ 72 test_bpftool.sh \ 73 test_bpftool_metadata.sh \ 74 test_doc_build.sh \ 75 test_xsk.sh 76 77TEST_PROGS_EXTENDED := with_addr.sh \ 78 with_tunnels.sh \ 79 test_xdp_vlan.sh test_bpftool.py 80 81# Compile but not part of 'make run_tests' 82TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \ 83 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \ 84 test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \ 85 xdpxceiver xdp_redirect_multi 86 87TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read 88 89# Emit succinct information message describing current building step 90# $1 - generic step name (e.g., CC, LINK, etc); 91# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; 92# $3 - target (assumed to be file); only file name will be emitted; 93# $4 - optional extra arg, emitted as-is, if provided. 94ifeq ($(V),1) 95Q = 96msg = 97else 98Q = @ 99msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))"; 100MAKEFLAGS += --no-print-directory 101submake_extras := feature_display=0 102endif 103 104# override lib.mk's default rules 105OVERRIDE_TARGETS := 1 106override define CLEAN 107 $(call msg,CLEAN) 108 $(Q)$(RM) -r $(TEST_GEN_PROGS) 109 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED) 110 $(Q)$(RM) -r $(TEST_GEN_FILES) 111 $(Q)$(RM) -r $(EXTRA_CLEAN) 112 $(Q)$(MAKE) -C bpf_testmod clean 113 $(Q)$(MAKE) docs-clean 114endef 115 116include ../lib.mk 117 118SCRATCH_DIR := $(OUTPUT)/tools 119BUILD_DIR := $(SCRATCH_DIR)/build 120INCLUDE_DIR := $(SCRATCH_DIR)/include 121BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a 122ifneq ($(CROSS_COMPILE),) 123HOST_BUILD_DIR := $(BUILD_DIR)/host 124HOST_SCRATCH_DIR := $(OUTPUT)/host-tools 125HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include 126else 127HOST_BUILD_DIR := $(BUILD_DIR) 128HOST_SCRATCH_DIR := $(SCRATCH_DIR) 129HOST_INCLUDE_DIR := $(INCLUDE_DIR) 130endif 131HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a 132RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids 133RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/ 134 135VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 136 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 137 ../../../../vmlinux \ 138 /sys/kernel/btf/vmlinux \ 139 /boot/vmlinux-$(shell uname -r) 140VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 141ifeq ($(VMLINUX_BTF),) 142$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)") 143endif 144 145# Define simple and short `make test_progs`, `make test_sysctl`, etc targets 146# to build individual tests. 147# NOTE: Semicolon at the end is critical to override lib.mk's default static 148# rule for binaries. 149$(notdir $(TEST_GEN_PROGS) \ 150 $(TEST_PROGS) \ 151 $(TEST_PROGS_EXTENDED) \ 152 $(TEST_GEN_PROGS_EXTENDED) \ 153 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ; 154 155# sort removes libbpf duplicates when not cross-building 156MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \ 157 $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids \ 158 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR)) 159$(MAKE_DIRS): 160 $(call msg,MKDIR,,$@) 161 $(Q)mkdir -p $@ 162 163$(OUTPUT)/%.o: %.c 164 $(call msg,CC,,$@) 165 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ 166 167$(OUTPUT)/%:%.c 168 $(call msg,BINARY,,$@) 169 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ 170 171$(OUTPUT)/urandom_read: urandom_read.c 172 $(call msg,BINARY,,$@) 173 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $< $(LDLIBS) -Wl,--build-id=sha1 -o $@ 174 175$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch]) 176 $(call msg,MOD,,$@) 177 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation 178 $(Q)$(MAKE) $(submake_extras) -C bpf_testmod 179 $(Q)cp bpf_testmod/bpf_testmod.ko $@ 180 181DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool 182 183$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT) 184 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ 185 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \ 186 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 187 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \ 188 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) && \ 189 cp $(RUNQSLOWER_OUTPUT)runqslower $@ 190 191TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL) 192 193$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) 194 195CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o 196TESTING_HELPERS := $(OUTPUT)/testing_helpers.o 197TRACE_HELPERS := $(OUTPUT)/trace_helpers.o 198 199$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS) 200$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) 201$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS) 202$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS) 203$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) 204$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) 205$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) 206$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS) 207$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS) 208$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS) 209$(OUTPUT)/test_tag: $(TESTING_HELPERS) 210$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS) 211$(OUTPUT)/xdping: $(TESTING_HELPERS) 212$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS) 213$(OUTPUT)/test_maps: $(TESTING_HELPERS) 214$(OUTPUT)/test_verifier: $(TESTING_HELPERS) 215 216BPFTOOL ?= $(DEFAULT_BPFTOOL) 217$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 218 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool 219 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 220 ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) \ 221 EXTRA_CFLAGS='-g -O0' \ 222 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 223 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 224 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ 225 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin 226 227all: docs 228 229docs: 230 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \ 231 -f Makefile.docs \ 232 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 233 234docs-clean: 235 $(Q)$(MAKE) $(submake_extras) \ 236 -f Makefile.docs \ 237 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 238 239$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 240 $(APIDIR)/linux/bpf.h \ 241 | $(BUILD_DIR)/libbpf 242 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 243 EXTRA_CFLAGS='-g -O0' \ 244 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 245 246ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) 247$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 248 $(APIDIR)/linux/bpf.h \ 249 | $(HOST_BUILD_DIR)/libbpf 250 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ 251 EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \ 252 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \ 253 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers 254endif 255 256$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 257ifeq ($(VMLINUX_H),) 258 $(call msg,GEN,,$@) 259 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ 260else 261 $(call msg,CP,,$@) 262 $(Q)cp "$(VMLINUX_H)" $@ 263endif 264 265$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ 266 $(TOOLSDIR)/bpf/resolve_btfids/main.c \ 267 $(TOOLSDIR)/lib/rbtree.c \ 268 $(TOOLSDIR)/lib/zalloc.c \ 269 $(TOOLSDIR)/lib/string.c \ 270 $(TOOLSDIR)/lib/ctype.c \ 271 $(TOOLSDIR)/lib/str_error_r.c 272 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ 273 CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \ 274 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ 275 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) 276 277# Get Clang's default includes on this system, as opposed to those seen by 278# '-target bpf'. This fixes "missing" files on some architectures/distros, 279# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 280# 281# Use '-idirafter': Don't interfere with include mechanics except where the 282# build would have failed anyways. 283define get_sys_includes 284$(shell $(1) -v -E - </dev/null 2>&1 \ 285 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 286$(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') 287endef 288 289# Determine target endianness. 290IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ 291 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 292MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 293 294CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) 295BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 296 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ 297 -I$(abspath $(OUTPUT)/../usr/include) 298 299CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ 300 -Wno-compare-distinct-pointer-types 301 302$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 303$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 304 305$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 306 307# Build BPF object using Clang 308# $1 - input .c file 309# $2 - output .o file 310# $3 - CFLAGS 311define CLANG_BPF_BUILD_RULE 312 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 313 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v3 -o $2 314endef 315# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 316define CLANG_NOALU32_BPF_BUILD_RULE 317 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 318 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v2 -o $2 319endef 320# Build BPF object using GCC 321define GCC_BPF_BUILD_RULE 322 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2) 323 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2 324endef 325 326SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c 327 328LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \ 329 linked_vars.skel.h linked_maps.skel.h 330 331LSKELS := kfunc_call_test.c fentry_test.c fexit_test.c fexit_sleep.c \ 332 test_ringbuf.c atomics.c trace_printk.c trace_vprintk.c \ 333 map_ptr_kern.c core_kern.c core_kern_overflow.c 334# Generate both light skeleton and libbpf skeleton for these 335LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test_subprog.c 336SKEL_BLACKLIST += $$(LSKELS) 337 338test_static_linked.skel.h-deps := test_static_linked1.o test_static_linked2.o 339linked_funcs.skel.h-deps := linked_funcs1.o linked_funcs2.o 340linked_vars.skel.h-deps := linked_vars1.o linked_vars2.o 341linked_maps.skel.h-deps := linked_maps1.o linked_maps2.o 342 343LINKED_BPF_SRCS := $(patsubst %.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps))) 344 345# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 346# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 347# Parameters: 348# $1 - test runner base binary name (e.g., test_progs) 349# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 350define DEFINE_TEST_RUNNER 351 352TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 353TRUNNER_BINARY := $1$(if $2,-)$2 354TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 355 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 356TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 357 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 358TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 359TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 360TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 361TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS)) 362TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 363 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\ 364 $$(TRUNNER_BPF_SRCS))) 365TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA)) 366TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS)) 367TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS) 368 369# Evaluate rules now with extra TRUNNER_XXX variables above already defined 370$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 371 372endef 373 374# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 375# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 376# $1 - test runner base binary name (e.g., test_progs) 377# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) 378define DEFINE_TEST_RUNNER_RULES 379 380ifeq ($($(TRUNNER_OUTPUT)-dir),) 381$(TRUNNER_OUTPUT)-dir := y 382$(TRUNNER_OUTPUT): 383 $$(call msg,MKDIR,,$$@) 384 $(Q)mkdir -p $$@ 385endif 386 387# ensure we set up BPF objects generation rule just once for a given 388# input/output directory combination 389ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 390$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 391$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 392 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 393 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 394 $$(INCLUDE_DIR)/vmlinux.h \ 395 $(wildcard $(BPFDIR)/bpf_*.h) \ 396 | $(TRUNNER_OUTPUT) $$(BPFOBJ) 397 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 398 $(TRUNNER_BPF_CFLAGS)) 399 400$(TRUNNER_BPF_SKELS): %.skel.h: %.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 401 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 402 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< 403 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) 404 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) 405 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 406 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=)) > $$@ 407 408$(TRUNNER_BPF_LSKELS): %.lskel.h: %.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 409 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 410 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< 411 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) 412 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) 413 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 414 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=_lskel)) > $$@ 415 416$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT) 417 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.o)) 418 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps)) 419 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o) 420 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o) 421 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 422 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 423 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@ 424endif 425 426# ensure we set up tests.h header generation rule just once 427ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 428$(TRUNNER_TESTS_DIR)-tests-hdr := y 429$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 430 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 431 $$(shell (echo '/* Generated header, do not edit */'; \ 432 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \ 433 $(TRUNNER_TESTS_DIR)/*.c | sort ; \ 434 ) > $$@) 435endif 436 437# compile individual test files 438# Note: we cd into output directory to ensure embedded BPF object is found 439$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 440 $(TRUNNER_TESTS_DIR)/%.c \ 441 $(TRUNNER_EXTRA_HDRS) \ 442 $(TRUNNER_BPF_OBJS) \ 443 $(TRUNNER_BPF_SKELS) \ 444 $(TRUNNER_BPF_LSKELS) \ 445 $(TRUNNER_BPF_SKELS_LINKED) \ 446 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 447 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 448 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 449 450$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 451 %.c \ 452 $(TRUNNER_EXTRA_HDRS) \ 453 $(TRUNNER_TESTS_HDR) \ 454 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 455 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 456 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 457 458# non-flavored in-srctree builds receive special treatment, in particular, we 459# do not need to copy extra resources (see e.g. test_btf_dump_case()) 460$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 461ifneq ($2:$(OUTPUT),:$(shell pwd)) 462 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 463 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/ 464endif 465 466$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 467 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 468 $(RESOLVE_BTFIDS) \ 469 | $(TRUNNER_BINARY)-extras 470 $$(call msg,BINARY,,$$@) 471 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@ 472 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.o $$@ 473 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/bootstrap/bpftool $(if $2,$2/)bpftool 474 475endef 476 477# Define test_progs test runner. 478TRUNNER_TESTS_DIR := prog_tests 479TRUNNER_BPF_PROGS_DIR := progs 480TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \ 481 network_helpers.c testing_helpers.c \ 482 btf_helpers.c flow_dissector_load.h 483TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \ 484 ima_setup.sh \ 485 $(wildcard progs/btf_dump_test_case_*.c) 486TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 487TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 488$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 489 490# Define test_progs-no_alu32 test runner. 491TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 492TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 493$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 494 495# Define test_progs BPF-GCC-flavored test runner. 496ifneq ($(BPF_GCC),) 497TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 498TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc) 499$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 500endif 501 502# Define test_maps test runner. 503TRUNNER_TESTS_DIR := map_tests 504TRUNNER_BPF_PROGS_DIR := progs 505TRUNNER_EXTRA_SOURCES := test_maps.c 506TRUNNER_EXTRA_FILES := 507TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 508TRUNNER_BPF_CFLAGS := 509$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 510 511# Define test_verifier test runner. 512# It is much simpler than test_maps/test_progs and sufficiently different from 513# them (e.g., test.h is using completely pattern), that it's worth just 514# explicitly defining all the rules explicitly. 515verifier/tests.h: verifier/*.c 516 $(shell ( cd verifier/; \ 517 echo '/* Generated header, do not edit */'; \ 518 echo '#ifdef FILL_ARRAY'; \ 519 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 520 echo '#endif' \ 521 ) > verifier/tests.h) 522$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 523 $(call msg,BINARY,,$@) 524 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 525 526# Make sure we are able to include and link libbpf against c++. 527$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 528 $(call msg,CXX,,$@) 529 $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@ 530 531# Benchmark runner 532$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ) 533 $(call msg,CC,,$@) 534 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@ 535$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h 536$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h 537$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \ 538 $(OUTPUT)/perfbuf_bench.skel.h 539$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h 540$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h 541$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h 542$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ) 543$(OUTPUT)/bench: LDLIBS += -lm 544$(OUTPUT)/bench: $(OUTPUT)/bench.o \ 545 $(TESTING_HELPERS) \ 546 $(TRACE_HELPERS) \ 547 $(OUTPUT)/bench_count.o \ 548 $(OUTPUT)/bench_rename.o \ 549 $(OUTPUT)/bench_trigger.o \ 550 $(OUTPUT)/bench_ringbufs.o \ 551 $(OUTPUT)/bench_bloom_filter_map.o \ 552 $(OUTPUT)/bench_bpf_loop.o \ 553 $(OUTPUT)/bench_strncmp.o 554 $(call msg,BINARY,,$@) 555 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 556 557EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ 558 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 559 feature bpftool \ 560 $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h no_alu32 bpf_gcc bpf_testmod.ko) 561 562.PHONY: docs docs-clean 563