OSCL-LXR

0001 # SPDX-License-Identifier: GPL-2.0
0002 include ../../../build/Build.include
0003 include ../../../scripts/Makefile.arch
0004 include ../../../scripts/Makefile.include
0005
0006 CXX ?= $(CROSS_COMPILE)g++
0007
0008 CURDIR := $(abspath .)
0009 TOOLSDIR := $(abspath ../../..)
0010 LIBDIR := $(TOOLSDIR)/lib
0011 BPFDIR := $(LIBDIR)/bpf
0012 TOOLSINCDIR := $(TOOLSDIR)/include
0013 BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
0014 APIDIR := $(TOOLSINCDIR)/uapi
0015 GENDIR := $(abspath ../../../../include/generated)
0016 GENHDR := $(GENDIR)/autoconf.h
0017
0018 ifneq ($(wildcard $(GENHDR)),)
0019   GENFLAGS := -DHAVE_GENHDR
0020 endif
0021
0022 BPF_GCC         ?= $(shell command -v bpf-gcc;)
0023 SAN_CFLAGS      ?=
0024 CFLAGS += -g -O0 -rdynamic -Wall -Werror $(GENFLAGS) $(SAN_CFLAGS)      \
0025           -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR)          \
0026           -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT)
0027 LDFLAGS += $(SAN_CFLAGS)
0028 LDLIBS += -lelf -lz -lrt -lpthread
0029
0030 # Silence some warnings when compiled with clang
0031 ifneq ($(LLVM),)
0032 CFLAGS += -Wno-unused-command-line-argument
0033 endif
0034
0035 # Order correspond to 'make run_tests' order
0036 TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
0037         test_verifier_log test_dev_cgroup \
0038         test_sock test_sockmap get_cgroup_id_user \
0039         test_cgroup_storage \
0040         test_tcpnotify_user test_sysctl \
0041         test_progs-no_alu32
0042
0043 # Also test bpf-gcc, if present
0044 ifneq ($(BPF_GCC),)
0045 TEST_GEN_PROGS += test_progs-bpf_gcc
0046 endif
0047
0048 TEST_GEN_FILES = test_lwt_ip_encap.o test_tc_edt.o
0049 TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)
0050
0051 # Order correspond to 'make run_tests' order
0052 TEST_PROGS := test_kmod.sh \
0053         test_xdp_redirect.sh \
0054         test_xdp_redirect_multi.sh \
0055         test_xdp_meta.sh \
0056         test_xdp_veth.sh \
0057         test_offload.py \
0058         test_sock_addr.sh \
0059         test_tunnel.sh \
0060         test_lwt_seg6local.sh \
0061         test_lirc_mode2.sh \
0062         test_skb_cgroup_id.sh \
0063         test_flow_dissector.sh \
0064         test_xdp_vlan_mode_generic.sh \
0065         test_xdp_vlan_mode_native.sh \
0066         test_lwt_ip_encap.sh \
0067         test_tcp_check_syncookie.sh \
0068         test_tc_tunnel.sh \
0069         test_tc_edt.sh \
0070         test_xdping.sh \
0071         test_bpftool_build.sh \
0072         test_bpftool.sh \
0073         test_bpftool_metadata.sh \
0074         test_doc_build.sh \
0075         test_xsk.sh
0076
0077 TEST_PROGS_EXTENDED := with_addr.sh \
0078         with_tunnels.sh ima_setup.sh \
0079         test_xdp_vlan.sh test_bpftool.py
0080
0081 # Compile but not part of 'make run_tests'
0082 TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
0083         flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
0084         test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
0085         xskxceiver xdp_redirect_multi xdp_synproxy
0086
0087 TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
0088
0089 # Emit succinct information message describing current building step
0090 # $1 - generic step name (e.g., CC, LINK, etc);
0091 # $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
0092 # $3 - target (assumed to be file); only file name will be emitted;
0093 # $4 - optional extra arg, emitted as-is, if provided.
0094 ifeq ($(V),1)
0095 Q =
0096 msg =
0097 else
0098 Q = @
0099 msg = @printf '  %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
0100 MAKEFLAGS += --no-print-directory
0101 submake_extras := feature_display=0
0102 endif
0103
0104 # override lib.mk's default rules
0105 OVERRIDE_TARGETS := 1
0106 override define CLEAN
0107         $(call msg,CLEAN)
0108         $(Q)$(RM) -r $(TEST_GEN_PROGS)
0109         $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED)
0110         $(Q)$(RM) -r $(TEST_GEN_FILES)
0111         $(Q)$(RM) -r $(EXTRA_CLEAN)
0112         $(Q)$(MAKE) -C bpf_testmod clean
0113         $(Q)$(MAKE) docs-clean
0114 endef
0115
0116 include ../lib.mk
0117
0118 SCRATCH_DIR := $(OUTPUT)/tools
0119 BUILD_DIR := $(SCRATCH_DIR)/build
0120 INCLUDE_DIR := $(SCRATCH_DIR)/include
0121 BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
0122 ifneq ($(CROSS_COMPILE),)
0123 HOST_BUILD_DIR          := $(BUILD_DIR)/host
0124 HOST_SCRATCH_DIR        := $(OUTPUT)/host-tools
0125 HOST_INCLUDE_DIR        := $(HOST_SCRATCH_DIR)/include
0126 else
0127 HOST_BUILD_DIR          := $(BUILD_DIR)
0128 HOST_SCRATCH_DIR        := $(SCRATCH_DIR)
0129 HOST_INCLUDE_DIR        := $(INCLUDE_DIR)
0130 endif
0131 HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
0132 RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
0133 RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
0134
0135 VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)                            \
0136                      $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)    \
0137                      ../../../../vmlinux                                \
0138                      /sys/kernel/btf/vmlinux                            \
0139                      /boot/vmlinux-$(shell uname -r)
0140 VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
0141 ifeq ($(VMLINUX_BTF),)
0142 $(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
0143 endif
0144
0145 # Define simple and short `make test_progs`, `make test_sysctl`, etc targets
0146 # to build individual tests.
0147 # NOTE: Semicolon at the end is critical to override lib.mk's default static
0148 # rule for binaries.
0149 $(notdir $(TEST_GEN_PROGS)                                              \
0150          $(TEST_PROGS)                                                  \
0151          $(TEST_PROGS_EXTENDED)                                         \
0152          $(TEST_GEN_PROGS_EXTENDED)                                     \
0153          $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
0154
0155 # sort removes libbpf duplicates when not cross-building
0156 MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf               \
0157                $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids      \
0158                $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR))
0159 $(MAKE_DIRS):
0160         $(call msg,MKDIR,,$@)
0161         $(Q)mkdir -p $@
0162
0163 $(OUTPUT)/%.o: %.c
0164         $(call msg,CC,,$@)
0165         $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
0166
0167 $(OUTPUT)/%:%.c
0168         $(call msg,BINARY,,$@)
0169         $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
0170
0171 # LLVM's ld.lld doesn't support all the architectures, so use it only on x86
0172 ifeq ($(SRCARCH),x86)
0173 LLD := lld
0174 else
0175 LLD := ld
0176 endif
0177
0178 # Filter out -static for liburandom_read.so and its dependent targets so that static builds
0179 # do not fail. Static builds leave urandom_read relying on system-wide shared libraries.
0180 $(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c
0181         $(call msg,LIB,,$@)
0182         $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $^ $(LDLIBS)   \
0183                      -fuse-ld=$(LLD) -Wl,-znoseparate-code -fPIC -shared -o $@
0184
0185 $(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
0186         $(call msg,BINARY,,$@)
0187         $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
0188                      liburandom_read.so $(LDLIBS)                              \
0189                      -fuse-ld=$(LLD) -Wl,-znoseparate-code                     \
0190                      -Wl,-rpath=. -Wl,--build-id=sha1 -o $@
0191
0192 $(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch])
0193         $(call msg,MOD,,$@)
0194         $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation
0195         $(Q)$(MAKE) $(submake_extras) -C bpf_testmod
0196         $(Q)cp bpf_testmod/bpf_testmod.ko $@
0197
0198 DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
0199
0200 $(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
0201         $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower            \
0202                     OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF)     \
0203                     BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/                  \
0204                     BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf                          \
0205                     BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) &&             \
0206                     cp $(RUNQSLOWER_OUTPUT)runqslower $@
0207
0208 TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL)
0209
0210 $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
0211
0212 CGROUP_HELPERS  := $(OUTPUT)/cgroup_helpers.o
0213 TESTING_HELPERS := $(OUTPUT)/testing_helpers.o
0214 TRACE_HELPERS   := $(OUTPUT)/trace_helpers.o
0215 CAP_HELPERS     := $(OUTPUT)/cap_helpers.o
0216
0217 $(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS)
0218 $(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
0219 $(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS)
0220 $(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS)
0221 $(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS)
0222 $(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS)
0223 $(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
0224 $(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS)
0225 $(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS)
0226 $(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS)
0227 $(OUTPUT)/test_tag: $(TESTING_HELPERS)
0228 $(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS)
0229 $(OUTPUT)/xdping: $(TESTING_HELPERS)
0230 $(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)
0231 $(OUTPUT)/test_maps: $(TESTING_HELPERS)
0232 $(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS)
0233 $(OUTPUT)/xsk.o: $(BPFOBJ)
0234 $(OUTPUT)/xskxceiver: $(OUTPUT)/xsk.o
0235
0236 BPFTOOL ?= $(DEFAULT_BPFTOOL)
0237 $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile)    \
0238                     $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
0239         $(Q)$(MAKE) $(submake_extras)  -C $(BPFTOOLDIR)                        \
0240                     ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD)             \
0241                     EXTRA_CFLAGS='-g -O0'                                      \
0242                     OUTPUT=$(HOST_BUILD_DIR)/bpftool/                          \
0243                     LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/                    \
0244                     LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/                        \
0245                     prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
0246
0247 all: docs
0248
0249 docs:
0250         $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras)    \
0251                     -f Makefile.docs                                    \
0252                     prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
0253
0254 docs-clean:
0255         $(Q)$(MAKE) $(submake_extras)                                   \
0256                     -f Makefile.docs                                    \
0257                     prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
0258
0259 $(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)                     \
0260            $(APIDIR)/linux/bpf.h                                               \
0261            | $(BUILD_DIR)/libbpf
0262         $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
0263                     EXTRA_CFLAGS='-g -O0'                                      \
0264                     DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
0265
0266 ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
0267 $(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)                \
0268                 $(APIDIR)/linux/bpf.h                                          \
0269                 | $(HOST_BUILD_DIR)/libbpf
0270         $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR)                             \
0271                     EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE=                 \
0272                     OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \
0273                     DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
0274 endif
0275
0276 $(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
0277 ifeq ($(VMLINUX_H),)
0278         $(call msg,GEN,,$@)
0279         $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
0280 else
0281         $(call msg,CP,,$@)
0282         $(Q)cp "$(VMLINUX_H)" $@
0283 endif
0284
0285 $(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids    \
0286                        $(TOOLSDIR)/bpf/resolve_btfids/main.c    \
0287                        $(TOOLSDIR)/lib/rbtree.c                 \
0288                        $(TOOLSDIR)/lib/zalloc.c                 \
0289                        $(TOOLSDIR)/lib/string.c                 \
0290                        $(TOOLSDIR)/lib/ctype.c                  \
0291                        $(TOOLSDIR)/lib/str_error_r.c
0292         $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
0293                 CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \
0294                 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
0295                 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
0296
0297 # Get Clang's default includes on this system, as opposed to those seen by
0298 # '-target bpf'. This fixes "missing" files on some architectures/distros,
0299 # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
0300 #
0301 # Use '-idirafter': Don't interfere with include mechanics except where the
0302 # build would have failed anyways.
0303 define get_sys_includes
0304 $(shell $(1) -v -E - </dev/null 2>&1 \
0305         | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
0306 $(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}')
0307 endef
0308
0309 # Determine target endianness.
0310 IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
0311                         grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
0312 MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
0313
0314 CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
0315 BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN)           \
0316              -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR)                   \
0317              -I$(abspath $(OUTPUT)/../usr/include)
0318
0319 CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
0320                -Wno-compare-distinct-pointer-types
0321
0322 $(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
0323 $(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
0324
0325 $(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
0326
0327 # Build BPF object using Clang
0328 # $1 - input .c file
0329 # $2 - output .o file
0330 # $3 - CFLAGS
0331 define CLANG_BPF_BUILD_RULE
0332         $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
0333         $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v3 -o $2
0334 endef
0335 # Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
0336 define CLANG_NOALU32_BPF_BUILD_RULE
0337         $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
0338         $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v2 -o $2
0339 endef
0340 # Build BPF object using GCC
0341 define GCC_BPF_BUILD_RULE
0342         $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
0343         $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
0344 endef
0345
0346 SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
0347
0348 LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h           \
0349                 linked_vars.skel.h linked_maps.skel.h                   \
0350                 test_subskeleton.skel.h test_subskeleton_lib.skel.h     \
0351                 test_usdt.skel.h
0352
0353 LSKELS := kfunc_call_test.c fentry_test.c fexit_test.c fexit_sleep.c \
0354         test_ringbuf.c atomics.c trace_printk.c trace_vprintk.c \
0355         map_ptr_kern.c core_kern.c core_kern_overflow.c
0356 # Generate both light skeleton and libbpf skeleton for these
0357 LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test_subprog.c
0358 SKEL_BLACKLIST += $$(LSKELS)
0359
0360 test_static_linked.skel.h-deps := test_static_linked1.o test_static_linked2.o
0361 linked_funcs.skel.h-deps := linked_funcs1.o linked_funcs2.o
0362 linked_vars.skel.h-deps := linked_vars1.o linked_vars2.o
0363 linked_maps.skel.h-deps := linked_maps1.o linked_maps2.o
0364 # In the subskeleton case, we want the test_subskeleton_lib.subskel.h file
0365 # but that's created as a side-effect of the skel.h generation.
0366 test_subskeleton.skel.h-deps := test_subskeleton_lib2.o test_subskeleton_lib.o test_subskeleton.o
0367 test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.o test_subskeleton_lib.o
0368 test_usdt.skel.h-deps := test_usdt.o test_usdt_multispec.o
0369
0370 LINKED_BPF_SRCS := $(patsubst %.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps)))
0371
0372 # Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
0373 # $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
0374 # Parameters:
0375 # $1 - test runner base binary name (e.g., test_progs)
0376 # $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
0377 define DEFINE_TEST_RUNNER
0378
0379 TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
0380 TRUNNER_BINARY := $1$(if $2,-)$2
0381 TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o,       \
0382                                  $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
0383 TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o,           \
0384                                  $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
0385 TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
0386 TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
0387 TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
0388 TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS))
0389 TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h,       \
0390                                  $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
0391                                                $$(TRUNNER_BPF_SRCS)))
0392 TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
0393 TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
0394 TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
0395
0396 # Evaluate rules now with extra TRUNNER_XXX variables above already defined
0397 $$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
0398
0399 endef
0400
0401 # Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
0402 # set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
0403 # $1 - test runner base binary name (e.g., test_progs)
0404 # $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
0405 define DEFINE_TEST_RUNNER_RULES
0406
0407 ifeq ($($(TRUNNER_OUTPUT)-dir),)
0408 $(TRUNNER_OUTPUT)-dir := y
0409 $(TRUNNER_OUTPUT):
0410         $$(call msg,MKDIR,,$$@)
0411         $(Q)mkdir -p $$@
0412 endif
0413
0414 # ensure we set up BPF objects generation rule just once for a given
0415 # input/output directory combination
0416 ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
0417 $(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
0418 $(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o:                             \
0419                      $(TRUNNER_BPF_PROGS_DIR)/%.c                       \
0420                      $(TRUNNER_BPF_PROGS_DIR)/*.h                       \
0421                      $$(INCLUDE_DIR)/vmlinux.h                          \
0422                      $(wildcard $(BPFDIR)/bpf_*.h)                      \
0423                      $(wildcard $(BPFDIR)/*.bpf.h)                      \
0424                      | $(TRUNNER_OUTPUT) $$(BPFOBJ)
0425         $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@,                      \
0426                                           $(TRUNNER_BPF_CFLAGS))
0427
0428 $(TRUNNER_BPF_SKELS): %.skel.h: %.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
0429         $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
0430         $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
0431         $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
0432         $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
0433         $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
0434         $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=)) > $$@
0435         $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=)) > $$(@:.skel.h=.subskel.h)
0436
0437 $(TRUNNER_BPF_LSKELS): %.lskel.h: %.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
0438         $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
0439         $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$<
0440         $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o)
0441         $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o)
0442         $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
0443         $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.o=_lskel)) > $$@
0444
0445 $(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT)
0446         $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.o))
0447         $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps))
0448         $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o)
0449         $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o)
0450         $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
0451         $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
0452         $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@
0453         $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h)
0454 endif
0455
0456 # ensure we set up tests.h header generation rule just once
0457 ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
0458 $(TRUNNER_TESTS_DIR)-tests-hdr := y
0459 $(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
0460         $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
0461         $$(shell (echo '/* Generated header, do not edit */';                                   \
0462                   sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p'     \
0463                         $(TRUNNER_TESTS_DIR)/*.c | sort ;       \
0464                  ) > $$@)
0465 endif
0466
0467 # compile individual test files
0468 # Note: we cd into output directory to ensure embedded BPF object is found
0469 $(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o:                       \
0470                       $(TRUNNER_TESTS_DIR)/%.c                          \
0471                       $(TRUNNER_EXTRA_HDRS)                             \
0472                       $(TRUNNER_BPF_OBJS)                               \
0473                       $(TRUNNER_BPF_SKELS)                              \
0474                       $(TRUNNER_BPF_LSKELS)                             \
0475                       $(TRUNNER_BPF_SKELS_LINKED)                       \
0476                       $$(BPFOBJ) | $(TRUNNER_OUTPUT)
0477         $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
0478         $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
0479
0480 $(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o:                           \
0481                        %.c                                              \
0482                        $(TRUNNER_EXTRA_HDRS)                            \
0483                        $(TRUNNER_TESTS_HDR)                             \
0484                        $$(BPFOBJ) | $(TRUNNER_OUTPUT)
0485         $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
0486         $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
0487
0488 # non-flavored in-srctree builds receive special treatment, in particular, we
0489 # do not need to copy extra resources (see e.g. test_btf_dump_case())
0490 $(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
0491 ifneq ($2:$(OUTPUT),:$(shell pwd))
0492         $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
0493         $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
0494 endif
0495
0496 $(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS)                       \
0497                              $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ)           \
0498                              $(RESOLVE_BTFIDS)                          \
0499                              | $(TRUNNER_BINARY)-extras
0500         $$(call msg,BINARY,,$$@)
0501         $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
0502         $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.o $$@
0503         $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/bootstrap/bpftool $(if $2,$2/)bpftool
0504
0505 endef
0506
0507 # Define test_progs test runner.
0508 TRUNNER_TESTS_DIR := prog_tests
0509 TRUNNER_BPF_PROGS_DIR := progs
0510 TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c  \
0511                          network_helpers.c testing_helpers.c            \
0512                          btf_helpers.c flow_dissector_load.h            \
0513                          cap_helpers.c
0514 TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko  \
0515                        $(OUTPUT)/liburandom_read.so                     \
0516                        $(OUTPUT)/xdp_synproxy                           \
0517                        ima_setup.sh                                     \
0518                        $(wildcard progs/btf_dump_test_case_*.c)
0519 TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
0520 TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
0521 $(eval $(call DEFINE_TEST_RUNNER,test_progs))
0522
0523 # Define test_progs-no_alu32 test runner.
0524 TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
0525 TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
0526 $(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
0527
0528 # Define test_progs BPF-GCC-flavored test runner.
0529 ifneq ($(BPF_GCC),)
0530 TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
0531 TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc)
0532 $(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
0533 endif
0534
0535 # Define test_maps test runner.
0536 TRUNNER_TESTS_DIR := map_tests
0537 TRUNNER_BPF_PROGS_DIR := progs
0538 TRUNNER_EXTRA_SOURCES := test_maps.c
0539 TRUNNER_EXTRA_FILES :=
0540 TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
0541 TRUNNER_BPF_CFLAGS :=
0542 $(eval $(call DEFINE_TEST_RUNNER,test_maps))
0543
0544 # Define test_verifier test runner.
0545 # It is much simpler than test_maps/test_progs and sufficiently different from
0546 # them (e.g., test.h is using completely pattern), that it's worth just
0547 # explicitly defining all the rules explicitly.
0548 verifier/tests.h: verifier/*.c
0549         $(shell ( cd verifier/; \
0550                   echo '/* Generated header, do not edit */'; \
0551                   echo '#ifdef FILL_ARRAY'; \
0552                   ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
0553                   echo '#endif' \
0554                 ) > verifier/tests.h)
0555 $(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
0556         $(call msg,BINARY,,$@)
0557         $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
0558
0559 # Make sure we are able to include and link libbpf against c++.
0560 $(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
0561         $(call msg,CXX,,$@)
0562         $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
0563
0564 # Benchmark runner
0565 $(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
0566         $(call msg,CC,,$@)
0567         $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
0568 $(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
0569 $(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
0570 $(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
0571                             $(OUTPUT)/perfbuf_bench.skel.h
0572 $(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
0573 $(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h
0574 $(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h
0575 $(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h
0576 $(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h
0577 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h
0578 $(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
0579 $(OUTPUT)/bench: LDLIBS += -lm
0580 $(OUTPUT)/bench: $(OUTPUT)/bench.o \
0581                  $(TESTING_HELPERS) \
0582                  $(TRACE_HELPERS) \
0583                  $(OUTPUT)/bench_count.o \
0584                  $(OUTPUT)/bench_rename.o \
0585                  $(OUTPUT)/bench_trigger.o \
0586                  $(OUTPUT)/bench_ringbufs.o \
0587                  $(OUTPUT)/bench_bloom_filter_map.o \
0588                  $(OUTPUT)/bench_bpf_loop.o \
0589                  $(OUTPUT)/bench_strncmp.o \
0590                  $(OUTPUT)/bench_bpf_hashmap_full_update.o \
0591                  $(OUTPUT)/bench_local_storage.o \
0592                  $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o
0593         $(call msg,BINARY,,$@)
0594         $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
0595
0596 EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR)  \
0597         prog_tests/tests.h map_tests/tests.h verifier/tests.h           \
0598         feature bpftool                                                 \
0599         $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h       \
0600                                no_alu32 bpf_gcc bpf_testmod.ko          \
0601                                liburandom_read.so)
0602
0603 .PHONY: docs docs-clean