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