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 := $(GENDIR)/autoconf.h
17HOSTPKG_CONFIG := pkg-config
18
19ifneq ($(wildcard $(GENHDR)),)
20  GENFLAGS := -DHAVE_GENHDR
21endif
22
23BPF_GCC		?= $(shell command -v bpf-gcc;)
24SAN_CFLAGS	?=
25CFLAGS += -g -O0 -rdynamic -Wall -Werror $(GENFLAGS) $(SAN_CFLAGS)	\
26	  -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR)		\
27	  -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT)
28LDFLAGS += $(SAN_CFLAGS)
29LDLIBS += -lelf -lz -lrt -lpthread
30
31# Silence some warnings when compiled with clang
32ifneq ($(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.bpf.o test_tc_edt.bpf.o
50TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)
51
52# Order correspond to 'make run_tests' order
53TEST_PROGS := test_kmod.sh \
54	test_xdp_redirect.sh \
55	test_xdp_redirect_multi.sh \
56	test_xdp_meta.sh \
57	test_xdp_veth.sh \
58	test_offload.py \
59	test_sock_addr.sh \
60	test_tunnel.sh \
61	test_lwt_seg6local.sh \
62	test_lirc_mode2.sh \
63	test_skb_cgroup_id.sh \
64	test_flow_dissector.sh \
65	test_xdp_vlan_mode_generic.sh \
66	test_xdp_vlan_mode_native.sh \
67	test_lwt_ip_encap.sh \
68	test_tcp_check_syncookie.sh \
69	test_tc_tunnel.sh \
70	test_tc_edt.sh \
71	test_xdping.sh \
72	test_bpftool_build.sh \
73	test_bpftool.sh \
74	test_bpftool_metadata.sh \
75	test_doc_build.sh \
76	test_xsk.sh
77
78TEST_PROGS_EXTENDED := with_addr.sh \
79	with_tunnels.sh ima_setup.sh verify_sig_setup.sh \
80	test_xdp_vlan.sh test_bpftool.py
81
82# Compile but not part of 'make run_tests'
83TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
84	flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
85	test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
86	xskxceiver xdp_redirect_multi xdp_synproxy veristat
87
88TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read $(OUTPUT)/sign-file
89TEST_GEN_FILES += liburandom_read.so
90
91# Emit succinct information message describing current building step
92# $1 - generic step name (e.g., CC, LINK, etc);
93# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
94# $3 - target (assumed to be file); only file name will be emitted;
95# $4 - optional extra arg, emitted as-is, if provided.
96ifeq ($(V),1)
97Q =
98msg =
99else
100Q = @
101msg = @printf '  %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
102MAKEFLAGS += --no-print-directory
103submake_extras := feature_display=0
104endif
105
106# override lib.mk's default rules
107OVERRIDE_TARGETS := 1
108override define CLEAN
109	$(call msg,CLEAN)
110	$(Q)$(RM) -r $(TEST_GEN_PROGS)
111	$(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED)
112	$(Q)$(RM) -r $(TEST_GEN_FILES)
113	$(Q)$(RM) -r $(EXTRA_CLEAN)
114	$(Q)$(MAKE) -C bpf_testmod clean
115	$(Q)$(MAKE) docs-clean
116endef
117
118include ../lib.mk
119
120SCRATCH_DIR := $(OUTPUT)/tools
121BUILD_DIR := $(SCRATCH_DIR)/build
122INCLUDE_DIR := $(SCRATCH_DIR)/include
123BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
124ifneq ($(CROSS_COMPILE),)
125HOST_BUILD_DIR		:= $(BUILD_DIR)/host
126HOST_SCRATCH_DIR	:= $(OUTPUT)/host-tools
127HOST_INCLUDE_DIR	:= $(HOST_SCRATCH_DIR)/include
128else
129HOST_BUILD_DIR		:= $(BUILD_DIR)
130HOST_SCRATCH_DIR	:= $(SCRATCH_DIR)
131HOST_INCLUDE_DIR	:= $(INCLUDE_DIR)
132endif
133HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
134RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
135RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
136
137VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)				\
138		     $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)	\
139		     ../../../../vmlinux				\
140		     /sys/kernel/btf/vmlinux				\
141		     /boot/vmlinux-$(shell uname -r)
142VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
143ifeq ($(VMLINUX_BTF),)
144$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
145endif
146
147# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
148# to build individual tests.
149# NOTE: Semicolon at the end is critical to override lib.mk's default static
150# rule for binaries.
151$(notdir $(TEST_GEN_PROGS)						\
152	 $(TEST_PROGS)							\
153	 $(TEST_PROGS_EXTENDED)						\
154	 $(TEST_GEN_PROGS_EXTENDED)					\
155	 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
156
157# sort removes libbpf duplicates when not cross-building
158MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf	       \
159	       $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids      \
160	       $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR))
161$(MAKE_DIRS):
162	$(call msg,MKDIR,,$@)
163	$(Q)mkdir -p $@
164
165$(OUTPUT)/%.o: %.c
166	$(call msg,CC,,$@)
167	$(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
168
169$(OUTPUT)/%:%.c
170	$(call msg,BINARY,,$@)
171	$(Q)$(LINK.c) $^ $(LDLIBS) -o $@
172
173# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
174ifeq ($(SRCARCH),x86)
175LLD := lld
176else
177LLD := ld
178endif
179
180# Filter out -static for liburandom_read.so and its dependent targets so that static builds
181# do not fail. Static builds leave urandom_read relying on system-wide shared libraries.
182$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c
183	$(call msg,LIB,,$@)
184	$(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $^ $(LDLIBS)   \
185		     -fuse-ld=$(LLD) -Wl,-znoseparate-code -fPIC -shared -o $@
186
187$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
188	$(call msg,BINARY,,$@)
189	$(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
190		     liburandom_read.so $(LDLIBS)			       \
191		     -fuse-ld=$(LLD) -Wl,-znoseparate-code		       \
192		     -Wl,-rpath=. -Wl,--build-id=sha1 -o $@
193
194$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c
195	$(call msg,SIGN-FILE,,$@)
196	$(Q)$(CC) $(shell $(HOSTPKG_CONFIG)--cflags libcrypto 2> /dev/null) \
197		  $< -o $@ \
198		  $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
199
200$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch])
201	$(call msg,MOD,,$@)
202	$(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation
203	$(Q)$(MAKE) $(submake_extras) -C bpf_testmod
204	$(Q)cp bpf_testmod/bpf_testmod.ko $@
205
206DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
207
208$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
209	$(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower	       \
210		    OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF)     \
211		    BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/		       \
212		    BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf			       \
213		    BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) &&	       \
214		    cp $(RUNQSLOWER_OUTPUT)runqslower $@
215
216TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL)
217
218$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
219
220CGROUP_HELPERS	:= $(OUTPUT)/cgroup_helpers.o
221TESTING_HELPERS	:= $(OUTPUT)/testing_helpers.o
222TRACE_HELPERS	:= $(OUTPUT)/trace_helpers.o
223CAP_HELPERS	:= $(OUTPUT)/cap_helpers.o
224
225$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS)
226$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
227$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS)
228$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS)
229$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS)
230$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS)
231$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
232$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS)
233$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS)
234$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS)
235$(OUTPUT)/test_tag: $(TESTING_HELPERS)
236$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS)
237$(OUTPUT)/xdping: $(TESTING_HELPERS)
238$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)
239$(OUTPUT)/test_maps: $(TESTING_HELPERS)
240$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS)
241$(OUTPUT)/xsk.o: $(BPFOBJ)
242$(OUTPUT)/xskxceiver: $(OUTPUT)/xsk.o
243
244BPFTOOL ?= $(DEFAULT_BPFTOOL)
245$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile)    \
246		    $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
247	$(Q)$(MAKE) $(submake_extras)  -C $(BPFTOOLDIR)			       \
248		    ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) 	       \
249		    EXTRA_CFLAGS='-g -O0'				       \
250		    OUTPUT=$(HOST_BUILD_DIR)/bpftool/			       \
251		    LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/		       \
252		    LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/			       \
253		    prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
254
255all: docs
256
257docs:
258	$(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras)	\
259	            -f Makefile.docs					\
260	            prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
261
262docs-clean:
263	$(Q)$(MAKE) $(submake_extras)					\
264	            -f Makefile.docs					\
265	            prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
266
267$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)		       \
268	   $(APIDIR)/linux/bpf.h					       \
269	   | $(BUILD_DIR)/libbpf
270	$(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
271		    EXTRA_CFLAGS='-g -O0'				       \
272		    DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
273
274ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
275$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)		       \
276		$(APIDIR)/linux/bpf.h					       \
277		| $(HOST_BUILD_DIR)/libbpf
278	$(Q)$(MAKE) $(submake_extras) -C $(BPFDIR)                             \
279		    EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE=		       \
280		    OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \
281		    DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
282endif
283
284$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
285ifeq ($(VMLINUX_H),)
286	$(call msg,GEN,,$@)
287	$(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
288else
289	$(call msg,CP,,$@)
290	$(Q)cp "$(VMLINUX_H)" $@
291endif
292
293$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids	\
294		       $(TOOLSDIR)/bpf/resolve_btfids/main.c	\
295		       $(TOOLSDIR)/lib/rbtree.c			\
296		       $(TOOLSDIR)/lib/zalloc.c			\
297		       $(TOOLSDIR)/lib/string.c			\
298		       $(TOOLSDIR)/lib/ctype.c			\
299		       $(TOOLSDIR)/lib/str_error_r.c
300	$(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids	\
301		CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \
302		LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
303		OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
304
305# Get Clang's default includes on this system, as opposed to those seen by
306# '-target bpf'. This fixes "missing" files on some architectures/distros,
307# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
308#
309# Use '-idirafter': Don't interfere with include mechanics except where the
310# build would have failed anyways.
311define get_sys_includes
312$(shell $(1) -v -E - </dev/null 2>&1 \
313	| sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
314$(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}')
315endef
316
317# Determine target endianness.
318IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
319			grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
320MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
321
322CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
323BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) 		\
324	     -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR)			\
325	     -I$(abspath $(OUTPUT)/../usr/include)
326
327CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
328	       -Wno-compare-distinct-pointer-types
329
330$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
331$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
332
333$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
334$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h
335
336# Build BPF object using Clang
337# $1 - input .c file
338# $2 - output .o file
339# $3 - CFLAGS
340define CLANG_BPF_BUILD_RULE
341	$(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
342	$(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v3 -o $2
343endef
344# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
345define CLANG_NOALU32_BPF_BUILD_RULE
346	$(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
347	$(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v2 -o $2
348endef
349# Build BPF object using GCC
350define GCC_BPF_BUILD_RULE
351	$(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
352	$(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
353endef
354
355SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
356
357LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h		\
358		linked_vars.skel.h linked_maps.skel.h 			\
359		test_subskeleton.skel.h test_subskeleton_lib.skel.h	\
360		test_usdt.skel.h
361
362LSKELS := fentry_test.c fexit_test.c fexit_sleep.c \
363	test_ringbuf.c atomics.c trace_printk.c trace_vprintk.c \
364	map_ptr_kern.c core_kern.c core_kern_overflow.c
365# Generate both light skeleton and libbpf skeleton for these
366LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \
367	kfunc_call_test_subprog.c
368SKEL_BLACKLIST += $$(LSKELS)
369
370test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o
371linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o
372linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o
373linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o
374# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file
375# but that's created as a side-effect of the skel.h generation.
376test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o
377test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o
378test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o
379
380LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps)))
381
382# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
383# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
384# Parameters:
385# $1 - test runner base binary name (e.g., test_progs)
386# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
387define DEFINE_TEST_RUNNER
388
389TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
390TRUNNER_BINARY := $1$(if $2,-)$2
391TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o,	\
392				 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
393TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o,		\
394				 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
395TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
396TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
397TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
398TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS))
399TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h,	\
400				 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
401					       $$(TRUNNER_BPF_SRCS)))
402TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
403TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
404TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
405
406# Evaluate rules now with extra TRUNNER_XXX variables above already defined
407$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
408
409endef
410
411# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
412# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
413# $1 - test runner base binary name (e.g., test_progs)
414# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
415define DEFINE_TEST_RUNNER_RULES
416
417ifeq ($($(TRUNNER_OUTPUT)-dir),)
418$(TRUNNER_OUTPUT)-dir := y
419$(TRUNNER_OUTPUT):
420	$$(call msg,MKDIR,,$$@)
421	$(Q)mkdir -p $$@
422endif
423
424# ensure we set up BPF objects generation rule just once for a given
425# input/output directory combination
426ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
427$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
428$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o:				\
429		     $(TRUNNER_BPF_PROGS_DIR)/%.c			\
430		     $(TRUNNER_BPF_PROGS_DIR)/*.h			\
431		     $$(INCLUDE_DIR)/vmlinux.h				\
432		     $(wildcard $(BPFDIR)/bpf_*.h)			\
433		     $(wildcard $(BPFDIR)/*.bpf.h)			\
434		     | $(TRUNNER_OUTPUT) $$(BPFOBJ)
435	$$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@,			\
436					  $(TRUNNER_BPF_CFLAGS))
437
438$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
439	$$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
440	$(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
441	$(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
442	$(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
443	$(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
444	$(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@
445	$(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h)
446
447$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
448	$$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
449	$(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$<
450	$(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o)
451	$(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o)
452	$(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
453	$(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@
454
455$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT)
456	$$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o))
457	$(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps))
458	$(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o)
459	$(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o)
460	$(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
461	$$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
462	$(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@
463	$(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h)
464endif
465
466# ensure we set up tests.h header generation rule just once
467ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
468$(TRUNNER_TESTS_DIR)-tests-hdr := y
469$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
470	$$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
471	$$(shell (echo '/* Generated header, do not edit */';					\
472		  sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p'	\
473			$(TRUNNER_TESTS_DIR)/*.c | sort ;	\
474		 ) > $$@)
475endif
476
477# compile individual test files
478# Note: we cd into output directory to ensure embedded BPF object is found
479$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o:			\
480		      $(TRUNNER_TESTS_DIR)/%.c				\
481		      $(TRUNNER_EXTRA_HDRS)				\
482		      $(TRUNNER_BPF_OBJS)				\
483		      $(TRUNNER_BPF_SKELS)				\
484		      $(TRUNNER_BPF_LSKELS)				\
485		      $(TRUNNER_BPF_SKELS_LINKED)			\
486		      $$(BPFOBJ) | $(TRUNNER_OUTPUT)
487	$$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
488	$(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
489
490$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o:				\
491		       %.c						\
492		       $(TRUNNER_EXTRA_HDRS)				\
493		       $(TRUNNER_TESTS_HDR)				\
494		       $$(BPFOBJ) | $(TRUNNER_OUTPUT)
495	$$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
496	$(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
497
498# non-flavored in-srctree builds receive special treatment, in particular, we
499# do not need to copy extra resources (see e.g. test_btf_dump_case())
500$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
501ifneq ($2:$(OUTPUT),:$(shell pwd))
502	$$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
503	$(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
504endif
505
506$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS)			\
507			     $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ)		\
508			     $(RESOLVE_BTFIDS)				\
509			     | $(TRUNNER_BINARY)-extras
510	$$(call msg,BINARY,,$$@)
511	$(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
512	$(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@
513	$(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/bootstrap/bpftool $(if $2,$2/)bpftool
514
515endef
516
517# Define test_progs test runner.
518TRUNNER_TESTS_DIR := prog_tests
519TRUNNER_BPF_PROGS_DIR := progs
520TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c	\
521			 network_helpers.c testing_helpers.c		\
522			 btf_helpers.c flow_dissector_load.h		\
523			 cap_helpers.c
524TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko	\
525		       $(OUTPUT)/liburandom_read.so			\
526		       $(OUTPUT)/xdp_synproxy				\
527		       $(OUTPUT)/sign-file				\
528		       ima_setup.sh verify_sig_setup.sh			\
529		       $(wildcard progs/btf_dump_test_case_*.c)
530TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
531TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
532$(eval $(call DEFINE_TEST_RUNNER,test_progs))
533
534# Define test_progs-no_alu32 test runner.
535TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
536TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
537$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
538
539# Define test_progs BPF-GCC-flavored test runner.
540ifneq ($(BPF_GCC),)
541TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
542TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc)
543$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
544endif
545
546# Define test_maps test runner.
547TRUNNER_TESTS_DIR := map_tests
548TRUNNER_BPF_PROGS_DIR := progs
549TRUNNER_EXTRA_SOURCES := test_maps.c
550TRUNNER_EXTRA_FILES :=
551TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
552TRUNNER_BPF_CFLAGS :=
553$(eval $(call DEFINE_TEST_RUNNER,test_maps))
554
555# Define test_verifier test runner.
556# It is much simpler than test_maps/test_progs and sufficiently different from
557# them (e.g., test.h is using completely pattern), that it's worth just
558# explicitly defining all the rules explicitly.
559verifier/tests.h: verifier/*.c
560	$(shell ( cd verifier/; \
561		  echo '/* Generated header, do not edit */'; \
562		  echo '#ifdef FILL_ARRAY'; \
563		  ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
564		  echo '#endif' \
565		) > verifier/tests.h)
566$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
567	$(call msg,BINARY,,$@)
568	$(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
569
570# Make sure we are able to include and link libbpf against c++.
571$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
572	$(call msg,CXX,,$@)
573	$(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
574
575# Benchmark runner
576$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
577	$(call msg,CC,,$@)
578	$(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
579$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
580$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
581$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
582			    $(OUTPUT)/perfbuf_bench.skel.h
583$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
584$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h
585$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h
586$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h
587$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h
588$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h
589$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
590$(OUTPUT)/bench: LDLIBS += -lm
591$(OUTPUT)/bench: $(OUTPUT)/bench.o \
592		 $(TESTING_HELPERS) \
593		 $(TRACE_HELPERS) \
594		 $(OUTPUT)/bench_count.o \
595		 $(OUTPUT)/bench_rename.o \
596		 $(OUTPUT)/bench_trigger.o \
597		 $(OUTPUT)/bench_ringbufs.o \
598		 $(OUTPUT)/bench_bloom_filter_map.o \
599		 $(OUTPUT)/bench_bpf_loop.o \
600		 $(OUTPUT)/bench_strncmp.o \
601		 $(OUTPUT)/bench_bpf_hashmap_full_update.o \
602		 $(OUTPUT)/bench_local_storage.o \
603		 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o
604	$(call msg,BINARY,,$@)
605	$(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
606
607$(OUTPUT)/veristat.o: $(BPFOBJ)
608$(OUTPUT)/veristat: $(OUTPUT)/veristat.o
609	$(call msg,BINARY,,$@)
610	$(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
611
612EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR)	\
613	prog_tests/tests.h map_tests/tests.h verifier/tests.h		\
614	feature bpftool							\
615	$(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h	\
616			       no_alu32 bpf_gcc bpf_testmod.ko		\
617			       liburandom_read.so)
618
619.PHONY: docs docs-clean
620