tools/testing/selftests/bpf/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 include ../../../../scripts/Kbuild.include
   3 include ../../../scripts/Makefile.arch
   4
   5 CXX ?= $(CROSS_COMPILE)g++
   6
   7 CURDIR := $(abspath .)
   8 TOOLSDIR := $(abspath ../../..)
   9 LIBDIR := $(TOOLSDIR)/lib
  10 BPFDIR := $(LIBDIR)/bpf
  11 TOOLSINCDIR := $(TOOLSDIR)/include
  12 BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
  13 APIDIR := $(TOOLSINCDIR)/uapi
  14 GENDIR := $(abspath ../../../../include/generated)
  15 GENHDR := $(GENDIR)/autoconf.h
  16
  17 ifneq ($(wildcard $(GENHDR)),)
  18   GENFLAGS := -DHAVE_GENHDR
  19 endif
  20
  21 CLANG           ?= clang
  22 LLC             ?= llc
  23 LLVM_OBJCOPY    ?= llvm-objcopy
  24 BPF_GCC         ?= $(shell command -v bpf-gcc;)
  25 SAN_CFLAGS      ?=
  26 CFLAGS += -g -rdynamic -Wall -O2 $(GENFLAGS) $(SAN_CFLAGS)              \
  27           -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR)          \
  28           -I$(TOOLSINCDIR) -I$(APIDIR)                                  \
  29           -Dbpf_prog_load=bpf_prog_test_load                            \
  30           -Dbpf_load_program=bpf_test_load_program
  31 LDLIBS += -lcap -lelf -lz -lrt -lpthread
  32
  33 # Order correspond to 'make run_tests' order
  34 TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
  35         test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \
  36         test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \
  37         test_cgroup_storage \
  38         test_netcnt test_tcpnotify_user test_sock_fields test_sysctl \
  39         test_progs-no_alu32 \
  40         test_current_pid_tgid_new_ns
  41
  42 # Also test bpf-gcc, if present
  43 ifneq ($(BPF_GCC),)
  44 TEST_GEN_PROGS += test_progs-bpf_gcc
  45 endif
  46
  47 TEST_GEN_FILES =
  48 TEST_FILES = test_lwt_ip_encap.o \
  49         test_tc_edt.o
  50
  51 # Order correspond to 'make run_tests' order
  52 TEST_PROGS := test_kmod.sh \
  53         test_xdp_redirect.sh \
  54         test_xdp_meta.sh \
  55         test_xdp_veth.sh \
  56         test_offload.py \
  57         test_sock_addr.sh \
  58         test_tunnel.sh \
  59         test_lwt_seg6local.sh \
  60         test_lirc_mode2.sh \
  61         test_skb_cgroup_id.sh \
  62         test_flow_dissector.sh \
  63         test_xdp_vlan_mode_generic.sh \
  64         test_xdp_vlan_mode_native.sh \
  65         test_lwt_ip_encap.sh \
  66         test_tcp_check_syncookie.sh \
  67         test_tc_tunnel.sh \
  68         test_tc_edt.sh \
  69         test_xdping.sh \
  70         test_bpftool_build.sh \
  71         test_bpftool.sh
  72
  73 TEST_PROGS_EXTENDED := with_addr.sh \
  74         with_tunnels.sh \
  75         tcp_client.py \
  76         tcp_server.py \
  77         test_xdp_vlan.sh
  78
  79 # Compile but not part of 'make run_tests'
  80 TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
  81         flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
  82         test_lirc_mode2_user xdping test_cpp runqslower bench
  83
  84 TEST_CUSTOM_PROGS = urandom_read
  85
  86 # Emit succinct information message describing current building step
  87 # $1 - generic step name (e.g., CC, LINK, etc);
  88 # $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
  89 # $3 - target (assumed to be file); only file name will be emitted;
  90 # $4 - optional extra arg, emitted as-is, if provided.
  91 ifeq ($(V),1)
  92 Q =
  93 msg =
  94 else
  95 Q = @
  96 msg = @printf '  %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
  97 MAKEFLAGS += --no-print-directory
  98 submake_extras := feature_display=0
  99 endif
 100
 101 # override lib.mk's default rules
 102 OVERRIDE_TARGETS := 1
 103 override define CLEAN
 104         $(call msg,CLEAN)
 105         $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
 106 endef
 107
 108 include ../lib.mk
 109
 110 SCRATCH_DIR := $(OUTPUT)/tools
 111 BUILD_DIR := $(SCRATCH_DIR)/build
 112 INCLUDE_DIR := $(SCRATCH_DIR)/include
 113 BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
 114 RESOLVE_BTFIDS := $(BUILD_DIR)/resolve_btfids/resolve_btfids
 115
 116 # Define simple and short `make test_progs`, `make test_sysctl`, etc targets
 117 # to build individual tests.
 118 # NOTE: Semicolon at the end is critical to override lib.mk's default static
 119 # rule for binaries.
 120 $(notdir $(TEST_GEN_PROGS)                                              \
 121          $(TEST_PROGS)                                                  \
 122          $(TEST_PROGS_EXTENDED)                                         \
 123          $(TEST_GEN_PROGS_EXTENDED)                                     \
 124          $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
 125
 126 $(OUTPUT)/%:%.c
 127         $(call msg,BINARY,,$@)
 128         $(LINK.c) $^ $(LDLIBS) -o $@
 129
 130 $(OUTPUT)/urandom_read: urandom_read.c
 131         $(call msg,BINARY,,$@)
 132         $(CC) $(LDFLAGS) -o $@ $< $(LDLIBS) -Wl,--build-id
 133
 134 $(OUTPUT)/test_stub.o: test_stub.c $(BPFOBJ)
 135         $(call msg,CC,,$@)
 136         $(CC) -c $(CFLAGS) -o $@ $<
 137
 138 VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)                            \
 139                      $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)    \
 140                      ../../../../vmlinux                                \
 141                      /sys/kernel/btf/vmlinux                            \
 142                      /boot/vmlinux-$(shell uname -r)
 143 VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
 144
 145 $(OUTPUT)/runqslower: $(BPFOBJ)
 146         $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower     \
 147                     OUTPUT=$(SCRATCH_DIR)/ VMLINUX_BTF=$(VMLINUX_BTF)   \
 148                     BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) &&      \
 149                     cp $(SCRATCH_DIR)/runqslower $@
 150
 151 $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ)
 152
 153 $(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
 154 $(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
 155 $(OUTPUT)/test_sock: cgroup_helpers.c
 156 $(OUTPUT)/test_sock_addr: cgroup_helpers.c
 157 $(OUTPUT)/test_socket_cookie: cgroup_helpers.c
 158 $(OUTPUT)/test_sockmap: cgroup_helpers.c
 159 $(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
 160 $(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
 161 $(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
 162 $(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
 163 $(OUTPUT)/test_netcnt: cgroup_helpers.c
 164 $(OUTPUT)/test_sock_fields: cgroup_helpers.c
 165 $(OUTPUT)/test_sysctl: cgroup_helpers.c
 166
 167 DEFAULT_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool
 168 BPFTOOL ?= $(DEFAULT_BPFTOOL)
 169 $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile)    \
 170                     $(BPFOBJ) | $(BUILD_DIR)/bpftool
 171         $(Q)$(MAKE) $(submake_extras)  -C $(BPFTOOLDIR)                        \
 172                     OUTPUT=$(BUILD_DIR)/bpftool/                               \
 173                     prefix= DESTDIR=$(SCRATCH_DIR)/ install
 174
 175 $(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)                     \
 176            ../../../include/uapi/linux/bpf.h                                   \
 177            | $(INCLUDE_DIR) $(BUILD_DIR)/libbpf
 178         $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
 179                     DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
 180
 181 $(BUILD_DIR)/libbpf $(BUILD_DIR)/bpftool $(BUILD_DIR)/resolve_btfids $(INCLUDE_DIR):
 182         $(call msg,MKDIR,,$@)
 183         mkdir -p $@
 184
 185 $(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) | $(BPFTOOL) $(INCLUDE_DIR)
 186 ifeq ($(VMLINUX_H),)
 187         $(call msg,GEN,,$@)
 188         $(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
 189 else
 190         $(call msg,CP,,$@)
 191         cp "$(VMLINUX_H)" $@
 192 endif
 193
 194 $(RESOLVE_BTFIDS): $(BPFOBJ) | $(BUILD_DIR)/resolve_btfids      \
 195                        $(TOOLSDIR)/bpf/resolve_btfids/main.c    \
 196                        $(TOOLSDIR)/lib/rbtree.c                 \
 197                        $(TOOLSDIR)/lib/zalloc.c                 \
 198                        $(TOOLSDIR)/lib/string.c                 \
 199                        $(TOOLSDIR)/lib/ctype.c                  \
 200                        $(TOOLSDIR)/lib/str_error_r.c
 201         $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
 202                 OUTPUT=$(BUILD_DIR)/resolve_btfids/ BPFOBJ=$(BPFOBJ)
 203
 204 # Get Clang's default includes on this system, as opposed to those seen by
 205 # '-target bpf'. This fixes "missing" files on some architectures/distros,
 206 # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
 207 #
 208 # Use '-idirafter': Don't interfere with include mechanics except where the
 209 # build would have failed anyways.
 210 define get_sys_includes
 211 $(shell $(1) -v -E - </dev/null 2>&1 \
 212         | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
 213 endef
 214
 215 # Determine target endianness.
 216 IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
 217                         grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
 218 MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
 219
 220 CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
 221 BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN)                   \
 222              -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR)                   \
 223              -I$(abspath $(OUTPUT)/../usr/include)
 224
 225 CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
 226                -Wno-compare-distinct-pointer-types
 227
 228 $(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
 229 $(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
 230
 231 $(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
 232
 233 # Build BPF object using Clang
 234 # $1 - input .c file
 235 # $2 - output .o file
 236 # $3 - CFLAGS
 237 # $4 - LDFLAGS
 238 define CLANG_BPF_BUILD_RULE
 239         $(call msg,CLNG-LLC,$(TRUNNER_BINARY),$2)
 240         ($(CLANG) $3 -O2 -target bpf -emit-llvm                         \
 241                 -c $1 -o - || echo "BPF obj compilation failed") |      \
 242         $(LLC) -mattr=dwarfris -march=bpf -mcpu=v3 $4 -filetype=obj -o $2
 243 endef
 244 # Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
 245 define CLANG_NOALU32_BPF_BUILD_RULE
 246         $(call msg,CLNG-LLC,$(TRUNNER_BINARY),$2)
 247         ($(CLANG) $3 -O2 -target bpf -emit-llvm                         \
 248                 -c $1 -o - || echo "BPF obj compilation failed") |      \
 249         $(LLC) -march=bpf -mcpu=v2 $4 -filetype=obj -o $2
 250 endef
 251 # Similar to CLANG_BPF_BUILD_RULE, but using native Clang and bpf LLC
 252 define CLANG_NATIVE_BPF_BUILD_RULE
 253         $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
 254         ($(CLANG) $3 -O2 -emit-llvm                                     \
 255                 -c $1 -o - || echo "BPF obj compilation failed") |      \
 256         $(LLC) -march=bpf -mcpu=v3 $4 -filetype=obj -o $2
 257 endef
 258 # Build BPF object using GCC
 259 define GCC_BPF_BUILD_RULE
 260         $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
 261         $(BPF_GCC) $3 $4 -O2 -c $1 -o $2
 262 endef
 263
 264 SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
 265
 266 # Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
 267 # $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
 268 # Parameters:
 269 # $1 - test runner base binary name (e.g., test_progs)
 270 # $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
 271 define DEFINE_TEST_RUNNER
 272
 273 TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
 274 TRUNNER_BINARY := $1$(if $2,-)$2
 275 TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o,       \
 276                                  $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
 277 TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o,           \
 278                                  $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
 279 TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
 280 TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
 281 TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
 282 TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS))
 283 TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h,       \
 284                                  $$(filter-out $(SKEL_BLACKLIST),       \
 285                                                $$(TRUNNER_BPF_SRCS)))
 286 TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
 287
 288 # Evaluate rules now with extra TRUNNER_XXX variables above already defined
 289 $$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
 290
 291 endef
 292
 293 # Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
 294 # set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
 295 # $1 - test runner base binary name (e.g., test_progs)
 296 # $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
 297 define DEFINE_TEST_RUNNER_RULES
 298
 299 ifeq ($($(TRUNNER_OUTPUT)-dir),)
 300 $(TRUNNER_OUTPUT)-dir := y
 301 $(TRUNNER_OUTPUT):
 302         $$(call msg,MKDIR,,$$@)
 303         mkdir -p $$@
 304 endif
 305
 306 # ensure we set up BPF objects generation rule just once for a given
 307 # input/output directory combination
 308 ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
 309 $(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
 310 $(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o:                             \
 311                      $(TRUNNER_BPF_PROGS_DIR)/%.c                       \
 312                      $(TRUNNER_BPF_PROGS_DIR)/*.h                       \
 313                      $$(INCLUDE_DIR)/vmlinux.h                          \
 314                      $$(BPFOBJ) | $(TRUNNER_OUTPUT)
 315         $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@,                      \
 316                                           $(TRUNNER_BPF_CFLAGS),        \
 317                                           $(TRUNNER_BPF_LDFLAGS))
 318
 319 $(TRUNNER_BPF_SKELS): $(TRUNNER_OUTPUT)/%.skel.h:                       \
 320                       $(TRUNNER_OUTPUT)/%.o                             \
 321                       | $(BPFTOOL) $(TRUNNER_OUTPUT)
 322         $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
 323         $$(BPFTOOL) gen skeleton $$< > $$@
 324 endif
 325
 326 # ensure we set up tests.h header generation rule just once
 327 ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
 328 $(TRUNNER_TESTS_DIR)-tests-hdr := y
 329 $(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
 330         $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
 331         $$(shell ( cd $(TRUNNER_TESTS_DIR);                             \
 332                   echo '/* Generated header, do not edit */';           \
 333                   ls *.c 2> /dev/null |                                 \
 334                         sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@';      \
 335                  ) > $$@)
 336 endif
 337
 338 # compile individual test files
 339 # Note: we cd into output directory to ensure embedded BPF object is found
 340 $(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o:                       \
 341                       $(TRUNNER_TESTS_DIR)/%.c                          \
 342                       $(TRUNNER_EXTRA_HDRS)                             \
 343                       $(TRUNNER_BPF_OBJS)                               \
 344                       $(TRUNNER_BPF_SKELS)                              \
 345                       $$(BPFOBJ) | $(TRUNNER_OUTPUT)
 346         $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
 347         cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
 348
 349 $(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o:                           \
 350                        %.c                                              \
 351                        $(TRUNNER_EXTRA_HDRS)                            \
 352                        $(TRUNNER_TESTS_HDR)                             \
 353                        $$(BPFOBJ) | $(TRUNNER_OUTPUT)
 354         $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
 355         $$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
 356
 357 # only copy extra resources if in flavored build
 358 $(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
 359 ifneq ($2,)
 360         $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
 361         cp -a $$^ $(TRUNNER_OUTPUT)/
 362 endif
 363
 364 $(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS)                       \
 365                              $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ)           \
 366                              $(RESOLVE_BTFIDS)                          \
 367                              | $(TRUNNER_BINARY)-extras
 368         $$(call msg,BINARY,,$$@)
 369         $$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
 370         $(RESOLVE_BTFIDS) --no-fail --btf btf_data.o $$@
 371
 372 endef
 373
 374 # Define test_progs test runner.
 375 TRUNNER_TESTS_DIR := prog_tests
 376 TRUNNER_BPF_PROGS_DIR := progs
 377 TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c  \
 378                          network_helpers.c testing_helpers.c            \
 379                          flow_dissector_load.h
 380 TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read                           \
 381                        $(wildcard progs/btf_dump_test_case_*.c)
 382 TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
 383 TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
 384 TRUNNER_BPF_LDFLAGS := -mattr=+alu32
 385 $(eval $(call DEFINE_TEST_RUNNER,test_progs))
 386
 387 # Define test_progs-no_alu32 test runner.
 388 TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
 389 TRUNNER_BPF_LDFLAGS :=
 390 $(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
 391
 392 # Define test_progs BPF-GCC-flavored test runner.
 393 ifneq ($(BPF_GCC),)
 394 TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
 395 TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc)
 396 TRUNNER_BPF_LDFLAGS :=
 397 $(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
 398 endif
 399
 400 # Define test_maps test runner.
 401 TRUNNER_TESTS_DIR := map_tests
 402 TRUNNER_BPF_PROGS_DIR := progs
 403 TRUNNER_EXTRA_SOURCES := test_maps.c
 404 TRUNNER_EXTRA_FILES :=
 405 TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
 406 TRUNNER_BPF_CFLAGS :=
 407 TRUNNER_BPF_LDFLAGS :=
 408 $(eval $(call DEFINE_TEST_RUNNER,test_maps))
 409
 410 # Define test_verifier test runner.
 411 # It is much simpler than test_maps/test_progs and sufficiently different from
 412 # them (e.g., test.h is using completely pattern), that it's worth just
 413 # explicitly defining all the rules explicitly.
 414 verifier/tests.h: verifier/*.c
 415         $(shell ( cd verifier/; \
 416                   echo '/* Generated header, do not edit */'; \
 417                   echo '#ifdef FILL_ARRAY'; \
 418                   ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
 419                   echo '#endif' \
 420                 ) > verifier/tests.h)
 421 $(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
 422         $(call msg,BINARY,,$@)
 423         $(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
 424
 425 # Make sure we are able to include and link libbpf against c++.
 426 $(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
 427         $(call msg,CXX,,$@)
 428         $(CXX) $(CFLAGS) $^ $(LDLIBS) -o $@
 429
 430 # Benchmark runner
 431 $(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h
 432         $(call msg,CC,,$@)
 433         $(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
 434 $(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
 435 $(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
 436 $(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
 437                             $(OUTPUT)/perfbuf_bench.skel.h
 438 $(OUTPUT)/bench.o: bench.h testing_helpers.h
 439 $(OUTPUT)/bench: LDLIBS += -lm
 440 $(OUTPUT)/bench: $(OUTPUT)/bench.o $(OUTPUT)/testing_helpers.o \
 441                  $(OUTPUT)/bench_count.o \
 442                  $(OUTPUT)/bench_rename.o \
 443                  $(OUTPUT)/bench_trigger.o \
 444                  $(OUTPUT)/bench_ringbufs.o
 445         $(call msg,BINARY,,$@)
 446         $(CC) $(LDFLAGS) -o $@ $(filter %.a %.o,$^) $(LDLIBS)
 447
 448 EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR)                      \
 449         prog_tests/tests.h map_tests/tests.h verifier/tests.h           \
 450         feature                                                         \
 451         $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32 bpf_gcc)