Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
13TOOLSARCHINCDIR := $(TOOLSDIR)/arch/$(SRCARCH)/include
14BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
15APIDIR := $(TOOLSINCDIR)/uapi
16ifneq ($(O),)
17GENDIR := $(O)/include/generated
18else
19GENDIR := $(abspath ../../../../include/generated)
20endif
21GENHDR := $(GENDIR)/autoconf.h
22PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
23
24ifneq ($(wildcard $(GENHDR)),)
25 GENFLAGS := -DHAVE_GENHDR
26endif
27
28BPF_GCC ?= $(shell command -v bpf-gcc;)
29SAN_CFLAGS ?=
30SAN_LDFLAGS ?= $(SAN_CFLAGS)
31RELEASE ?=
32OPT_FLAGS ?= $(if $(RELEASE),-O2,-O0)
33
34LIBELF_CFLAGS := $(shell $(PKG_CONFIG) libelf --cflags 2>/dev/null)
35LIBELF_LIBS := $(shell $(PKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
36
37SKIP_DOCS ?=
38SKIP_LLVM ?=
39
40ifeq ($(srctree),)
41srctree := $(patsubst %/,%,$(dir $(CURDIR)))
42srctree := $(patsubst %/,%,$(dir $(srctree)))
43srctree := $(patsubst %/,%,$(dir $(srctree)))
44srctree := $(patsubst %/,%,$(dir $(srctree)))
45endif
46
47CFLAGS += -g $(OPT_FLAGS) -rdynamic -std=gnu11 \
48 -Wall -Werror -fno-omit-frame-pointer \
49 -Wno-unused-but-set-variable \
50 $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_CFLAGS) \
51 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \
52 -I$(TOOLSINCDIR) -I$(TOOLSARCHINCDIR) -I$(APIDIR) -I$(OUTPUT)
53LDFLAGS += $(SAN_LDFLAGS)
54LDLIBS += $(LIBELF_LIBS) -lz -lrt -lpthread
55
56PCAP_CFLAGS := $(shell $(PKG_CONFIG) --cflags libpcap 2>/dev/null && echo "-DTRAFFIC_MONITOR=1")
57PCAP_LIBS := $(shell $(PKG_CONFIG) --libs libpcap 2>/dev/null)
58LDLIBS += $(PCAP_LIBS)
59CFLAGS += $(PCAP_CFLAGS)
60
61# Some utility functions use LLVM libraries
62jit_disasm_helpers.c-CFLAGS = $(LLVM_CFLAGS)
63
64ifneq ($(LLVM),)
65# Silence some warnings when compiled with clang
66CFLAGS += -Wno-unused-command-line-argument
67endif
68
69# Check whether bpf cpu=v4 is supported or not by clang
70ifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),)
71CLANG_CPUV4 := 1
72endif
73
74# Order correspond to 'make run_tests' order
75TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_progs \
76 test_sockmap \
77 test_tcpnotify_user \
78 test_progs-no_alu32
79TEST_INST_SUBDIRS := no_alu32
80
81# Also test bpf-gcc, if present
82ifneq ($(BPF_GCC),)
83TEST_GEN_PROGS += test_progs-bpf_gcc
84TEST_INST_SUBDIRS += bpf_gcc
85
86# The following tests contain C code that, although technically legal,
87# triggers GCC warnings that cannot be disabled: declaration of
88# anonymous struct types in function parameter lists.
89progs/btf_dump_test_case_bitfields.c-bpf_gcc-CFLAGS := -Wno-error
90progs/btf_dump_test_case_namespacing.c-bpf_gcc-CFLAGS := -Wno-error
91progs/btf_dump_test_case_packing.c-bpf_gcc-CFLAGS := -Wno-error
92progs/btf_dump_test_case_padding.c-bpf_gcc-CFLAGS := -Wno-error
93progs/btf_dump_test_case_syntax.c-bpf_gcc-CFLAGS := -Wno-error
94
95endif
96
97ifneq ($(CLANG_CPUV4),)
98TEST_GEN_PROGS += test_progs-cpuv4
99TEST_INST_SUBDIRS += cpuv4
100endif
101
102TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)
103
104# Order correspond to 'make run_tests' order
105TEST_PROGS := test_kmod.sh \
106 test_lirc_mode2.sh \
107 test_xdping.sh \
108 test_bpftool_build.sh \
109 test_bpftool.sh \
110 test_bpftool_map.sh \
111 test_bpftool_metadata.sh \
112 test_doc_build.sh \
113 test_xsk.sh \
114 test_xdp_features.sh
115
116TEST_PROGS_EXTENDED := \
117 ima_setup.sh verify_sig_setup.sh \
118 test_bpftool.py
119
120TEST_KMODS := bpf_testmod.ko bpf_test_no_cfi.ko bpf_test_modorder_x.ko \
121 bpf_test_modorder_y.ko bpf_test_rqspinlock.ko
122TEST_KMOD_TARGETS = $(addprefix $(OUTPUT)/,$(TEST_KMODS))
123
124# Compile but not part of 'make run_tests'
125TEST_GEN_PROGS_EXTENDED = \
126 bench \
127 flow_dissector_load \
128 test_cpp \
129 test_lirc_mode2_user \
130 veristat \
131 xdp_features \
132 xdp_hw_metadata \
133 xdp_synproxy \
134 xdping \
135 xskxceiver
136
137TEST_GEN_FILES += $(TEST_KMODS) liburandom_read.so urandom_read sign-file uprobe_multi
138
139ifneq ($(V),1)
140submake_extras := feature_display=0
141endif
142
143# override lib.mk's default rules
144OVERRIDE_TARGETS := 1
145override define CLEAN
146 $(call msg,CLEAN)
147 $(Q)$(RM) -r $(TEST_GEN_PROGS)
148 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED)
149 $(Q)$(RM) -r $(TEST_GEN_FILES)
150 $(Q)$(RM) -r $(TEST_KMODS)
151 $(Q)$(RM) -r $(EXTRA_CLEAN)
152 $(Q)$(MAKE) -C test_kmods clean
153 $(Q)$(MAKE) docs-clean
154endef
155
156include ../lib.mk
157
158NON_CHECK_FEAT_TARGETS := clean docs-clean
159CHECK_FEAT := $(filter-out $(NON_CHECK_FEAT_TARGETS),$(or $(MAKECMDGOALS), "none"))
160ifneq ($(CHECK_FEAT),)
161FEATURE_USER := .selftests
162FEATURE_TESTS := llvm
163FEATURE_DISPLAY := $(FEATURE_TESTS)
164
165# Makefile.feature expects OUTPUT to end with a slash
166ifeq ($(shell expr $(MAKE_VERSION) \>= 4.4), 1)
167$(let OUTPUT,$(OUTPUT)/,\
168 $(eval include ../../../build/Makefile.feature))
169else
170override OUTPUT := $(OUTPUT)/
171$(eval include ../../../build/Makefile.feature)
172override OUTPUT := $(patsubst %/,%,$(OUTPUT))
173endif
174endif
175
176ifneq ($(SKIP_LLVM),1)
177ifeq ($(feature-llvm),1)
178 LLVM_CFLAGS += -DHAVE_LLVM_SUPPORT
179 LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets
180 # both llvm-config and lib.mk add -D_GNU_SOURCE, which ends up as conflict
181 LLVM_CFLAGS += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags))
182 # Prefer linking statically if it's available, otherwise fallback to shared
183 ifeq ($(shell $(LLVM_CONFIG) --link-static --libs >/dev/null 2>&1 && echo static),static)
184 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-static --libs $(LLVM_CONFIG_LIB_COMPONENTS))
185 LLVM_LDLIBS += $(filter-out -lxml2,$(shell $(LLVM_CONFIG) --link-static --system-libs $(LLVM_CONFIG_LIB_COMPONENTS)))
186 LLVM_LDLIBS += -lstdc++
187 else
188 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-shared --libs $(LLVM_CONFIG_LIB_COMPONENTS))
189 endif
190 LLVM_LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags)
191endif
192endif
193
194SCRATCH_DIR := $(OUTPUT)/tools
195BUILD_DIR := $(SCRATCH_DIR)/build
196INCLUDE_DIR := $(SCRATCH_DIR)/include
197BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
198ifneq ($(CROSS_COMPILE),)
199HOST_BUILD_DIR := $(BUILD_DIR)/host
200HOST_SCRATCH_DIR := $(OUTPUT)/host-tools
201HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include
202else
203HOST_BUILD_DIR := $(BUILD_DIR)
204HOST_SCRATCH_DIR := $(SCRATCH_DIR)
205HOST_INCLUDE_DIR := $(INCLUDE_DIR)
206endif
207HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
208RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
209VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
210 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
211 ../../../../vmlinux \
212 /sys/kernel/btf/vmlinux \
213 /boot/vmlinux-$(shell uname -r)
214VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
215ifeq ($(VMLINUX_BTF),)
216$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
217endif
218
219# Define simple and short `make test_progs`, `make test_maps`, etc targets
220# to build individual tests.
221# NOTE: Semicolon at the end is critical to override lib.mk's default static
222# rule for binaries.
223$(notdir $(TEST_GEN_PROGS) $(TEST_KMODS) \
224 $(TEST_GEN_PROGS_EXTENDED)): %: $(OUTPUT)/% ;
225
226# sort removes libbpf duplicates when not cross-building
227MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \
228 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \
229 $(HOST_BUILD_DIR)/resolve_btfids \
230 $(INCLUDE_DIR))
231$(MAKE_DIRS):
232 $(call msg,MKDIR,,$@)
233 $(Q)mkdir -p $@
234
235$(OUTPUT)/%.o: %.c
236 $(call msg,CC,,$@)
237 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
238
239$(OUTPUT)/%:%.c
240 $(call msg,BINARY,,$@)
241 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
242
243# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
244ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv))
245LLD := lld
246else
247LLD := $(shell command -v $(LD))
248endif
249
250# Filter out -static for liburandom_read.so and its dependent targets so that static builds
251# do not fail. Static builds leave urandom_read relying on system-wide shared libraries.
252$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom_read.map
253 $(call msg,LIB,,$@)
254 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \
255 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \
256 $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \
257 -Wno-unused-command-line-argument \
258 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
259 -Wl,--version-script=liburandom_read.map \
260 -fPIC -shared -o $@
261
262$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
263 $(call msg,BINARY,,$@)
264 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \
265 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
266 -Wno-unused-command-line-argument \
267 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \
268 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
269 -Wl,-rpath=. -o $@
270
271$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c
272 $(call msg,SIGN-FILE,,$@)
273 $(Q)$(CC) $(shell $(PKG_CONFIG) --cflags libcrypto 2> /dev/null) \
274 $< -o $@ \
275 $(shell $(PKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
276
277# This should really be a grouped target, but make versions before 4.3 don't
278# support that for regular rules. However, pattern matching rules are implicitly
279# treated as grouped even with older versions of make, so as a workaround, the
280# subst() turns the rule into a pattern matching rule
281$(addprefix test_kmods/,$(subst .ko,%ko,$(TEST_KMODS))): $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard test_kmods/Makefile test_kmods/*.[ch])
282 $(Q)$(RM) test_kmods/*.ko test_kmods/*.mod.o # force re-compilation
283 $(Q)$(MAKE) $(submake_extras) -C test_kmods \
284 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \
285 EXTRA_CFLAGS='' EXTRA_LDFLAGS=''
286
287$(TEST_KMOD_TARGETS): $(addprefix test_kmods/,$(TEST_KMODS))
288 $(call msg,MOD,,$@)
289 $(Q)cp test_kmods/$(@F) $@
290
291
292DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
293ifneq ($(CROSS_COMPILE),)
294CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool
295TRUNNER_BPFTOOL := $(CROSS_BPFTOOL)
296USE_BOOTSTRAP := ""
297else
298TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL)
299USE_BOOTSTRAP := "bootstrap/"
300endif
301
302TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL)
303
304$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
305
306TESTING_HELPERS := $(OUTPUT)/testing_helpers.o
307CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o
308UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o
309TRACE_HELPERS := $(OUTPUT)/trace_helpers.o
310JSON_WRITER := $(OUTPUT)/json_writer.o
311CAP_HELPERS := $(OUTPUT)/cap_helpers.o
312NETWORK_HELPERS := $(OUTPUT)/network_helpers.o
313
314$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS)
315$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS)
316$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS)
317$(OUTPUT)/test_tag: $(TESTING_HELPERS)
318$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS)
319$(OUTPUT)/xdping: $(TESTING_HELPERS)
320$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)
321$(OUTPUT)/test_maps: $(TESTING_HELPERS)
322$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS)
323$(OUTPUT)/xsk.o: $(BPFOBJ)
324
325BPFTOOL ?= $(DEFAULT_BPFTOOL)
326$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
327 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
328 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
329 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \
330 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \
331 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \
332 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
333 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
334 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
335 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
336
337ifneq ($(CROSS_COMPILE),)
338$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
339 $(BPFOBJ) | $(BUILD_DIR)/bpftool
340 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
341 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \
342 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \
343 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \
344 OUTPUT=$(BUILD_DIR)/bpftool/ \
345 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \
346 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \
347 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin
348endif
349
350ifneq ($(SKIP_DOCS),1)
351all: docs
352endif
353
354docs:
355 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \
356 -f Makefile.docs \
357 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
358
359docs-clean:
360 $(Q)$(MAKE) $(submake_extras) \
361 -f Makefile.docs \
362 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
363
364$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
365 $(APIDIR)/linux/bpf.h \
366 | $(BUILD_DIR)/libbpf
367 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
368 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \
369 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \
370 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
371
372ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
373$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
374 $(APIDIR)/linux/bpf.h \
375 | $(HOST_BUILD_DIR)/libbpf
376 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
377 ARCH= CROSS_COMPILE= \
378 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \
379 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \
380 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
381 CC="$(HOSTCC)" LD="$(HOSTLD)" \
382 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
383endif
384
385# vmlinux.h is first dumped to a temporary file and then compared to
386# the previous version. This helps to avoid unnecessary re-builds of
387# $(TRUNNER_BPF_OBJS)
388$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
389ifeq ($(VMLINUX_H),)
390 $(call msg,GEN,,$@)
391 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $(INCLUDE_DIR)/.vmlinux.h.tmp
392 $(Q)cmp -s $(INCLUDE_DIR)/.vmlinux.h.tmp $@ || mv $(INCLUDE_DIR)/.vmlinux.h.tmp $@
393else
394 $(call msg,CP,,$@)
395 $(Q)cp "$(VMLINUX_H)" $@
396endif
397
398$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
399 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
400 $(TOOLSDIR)/lib/rbtree.c \
401 $(TOOLSDIR)/lib/zalloc.c \
402 $(TOOLSDIR)/lib/string.c \
403 $(TOOLSDIR)/lib/ctype.c \
404 $(TOOLSDIR)/lib/str_error_r.c
405 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
406 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \
407 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
408 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
409
410# Get Clang's default includes on this system, as opposed to those seen by
411# '--target=bpf'. This fixes "missing" files on some architectures/distros,
412# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
413#
414# Use '-idirafter': Don't interfere with include mechanics except where the
415# build would have failed anyways.
416define get_sys_includes
417$(shell $(1) $(2) -v -E - </dev/null 2>&1 \
418 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
419$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \
420$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') \
421$(shell $(1) $(2) -dM -E - </dev/null | grep -E 'MIPS(EL|EB)|_MIPS_SZ(PTR|LONG) |_MIPS_SIM |_ABI(O32|N32|64) ' | awk '{printf("-D%s=%s ", $$2, $$3)}')
422endef
423
424# Determine target endianness.
425IS_LITTLE_ENDIAN := $(shell $(CC) -dM -E - </dev/null | \
426 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
427MENDIAN:=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
428BPF_TARGET_ENDIAN:=$(if $(IS_LITTLE_ENDIAN),--target=bpfel,--target=bpfeb)
429
430ifneq ($(CROSS_COMPILE),)
431CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%))
432endif
433
434CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH))
435BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
436 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
437 -I$(abspath $(OUTPUT)/../usr/include) \
438 -std=gnu11 \
439 -fno-strict-aliasing \
440 -Wno-microsoft-anon-tag \
441 -fms-extensions \
442 -Wno-compare-distinct-pointer-types \
443 -Wno-initializer-overrides \
444 #
445# TODO: enable me -Wsign-compare
446
447CLANG_CFLAGS = $(CLANG_SYS_INCLUDES)
448
449$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
450$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
451
452$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
453$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h
454
455# Build BPF object using Clang
456# $1 - input .c file
457# $2 - output .o file
458# $3 - CFLAGS
459# $4 - binary name
460define CLANG_BPF_BUILD_RULE
461 $(call msg,CLNG-BPF,$4,$2)
462 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v3 -o $2
463endef
464# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
465define CLANG_NOALU32_BPF_BUILD_RULE
466 $(call msg,CLNG-BPF,$4,$2)
467 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v2 -o $2
468endef
469# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4
470define CLANG_CPUV4_BPF_BUILD_RULE
471 $(call msg,CLNG-BPF,$4,$2)
472 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v4 -o $2
473endef
474# Build BPF object using GCC
475define GCC_BPF_BUILD_RULE
476 $(call msg,GCC-BPF,$4,$2)
477 $(Q)$(BPF_GCC) $3 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes -O2 -c $1 -o $2
478endef
479
480SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
481
482LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
483 linked_vars.skel.h linked_maps.skel.h \
484 test_subskeleton.skel.h test_subskeleton_lib.skel.h \
485 test_usdt.skel.h
486
487LSKELS := fexit_sleep.c trace_printk.c trace_vprintk.c map_ptr_kern.c \
488 core_kern.c core_kern_overflow.c test_ringbuf.c \
489 test_ringbuf_n.c test_ringbuf_map_key.c test_ringbuf_write.c \
490 test_ringbuf_overwrite.c
491
492LSKELS_SIGNED := fentry_test.c fexit_test.c atomics.c
493
494# Generate both light skeleton and libbpf skeleton for these
495LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \
496 kfunc_call_test_subprog.c
497SKEL_BLACKLIST += $$(LSKELS) $$(LSKELS_SIGNED)
498
499test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o
500linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o
501linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o
502linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o
503# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file
504# but that's created as a side-effect of the skel.h generation.
505test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o
506test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o
507test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o
508xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o
509xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o
510xdp_features.skel.h-deps := xdp_features.bpf.o
511
512LINKED_BPF_OBJS := $(foreach skel,$(LINKED_SKELS),$($(skel)-deps))
513LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(LINKED_BPF_OBJS))
514
515HEADERS_FOR_BPF_OBJS := $(wildcard $(BPFDIR)/*.bpf.h) \
516 $(addprefix $(BPFDIR)/, bpf_core_read.h \
517 bpf_endian.h \
518 bpf_helpers.h \
519 bpf_tracing.h)
520
521# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
522# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
523# Parameters:
524# $1 - test runner base binary name (e.g., test_progs)
525# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc)
526define DEFINE_TEST_RUNNER
527
528LSKEL_SIGN := -S -k $(PRIVATE_KEY) -i $(VERIFICATION_CERT)
529TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
530TRUNNER_BINARY := $1$(if $2,-)$2
531TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
532 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
533TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
534 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
535TRUNNER_LIB_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
536 $$(filter %.c,$(TRUNNER_LIB_SOURCES)))
537TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
538TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
539TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
540TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS))
541TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
542 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
543 $$(TRUNNER_BPF_SRCS)))
544TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
545TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
546TRUNNER_BPF_LSKELS_SIGNED := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS_SIGNED))
547TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
548
549# Evaluate rules now with extra TRUNNER_XXX variables above already defined
550$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
551
552endef
553
554# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
555# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
556# $1 - test runner base binary name (e.g., test_progs)
557# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc)
558define DEFINE_TEST_RUNNER_RULES
559
560ifeq ($($(TRUNNER_OUTPUT)-dir),)
561$(TRUNNER_OUTPUT)-dir := y
562$(TRUNNER_OUTPUT):
563 $$(call msg,MKDIR,,$$@)
564 $(Q)mkdir -p $$@
565endif
566
567# ensure we set up BPF objects generation rule just once for a given
568# input/output directory combination
569ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
570$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
571$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \
572 $(TRUNNER_BPF_PROGS_DIR)/%.c \
573 $(TRUNNER_BPF_PROGS_DIR)/*.h \
574 $$(INCLUDE_DIR)/vmlinux.h \
575 $(HEADERS_FOR_BPF_OBJS) \
576 | $(TRUNNER_OUTPUT) $$(BPFOBJ)
577 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
578 $(TRUNNER_BPF_CFLAGS) \
579 $$($$<-CFLAGS) \
580 $$($$<-$2-CFLAGS),$(TRUNNER_BINARY))
581
582$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
583 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
584 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
585 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
586 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
587 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
588 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@
589 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h)
590 $(Q)rm -f $$(<:.o=.linked1.o) $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
591
592$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
593 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
594 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$<
595 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o)
596 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o)
597 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
598 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@
599 $(Q)rm -f $$(<:.o=.llinked1.o) $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
600
601$(TRUNNER_BPF_LSKELS_SIGNED): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
602 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY) (signed),$$@)
603 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$<
604 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o)
605 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o)
606 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
607 $(Q)$$(BPFTOOL) gen skeleton $(LSKEL_SIGN) $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@
608 $(Q)rm -f $$(<:.o=.llinked1.o) $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
609
610$(LINKED_BPF_OBJS): %: $(TRUNNER_OUTPUT)/%
611
612# .SECONDEXPANSION here allows to correctly expand %-deps variables as prerequisites
613.SECONDEXPANSION:
614$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_OUTPUT)/%: $$$$(%-deps) $(BPFTOOL) | $(TRUNNER_OUTPUT)
615 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o))
616 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps))
617 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o)
618 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o)
619 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
620 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
621 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@
622 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h)
623 $(Q)rm -f $$(@:.skel.h=.linked1.o) $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
624
625# When the compiler generates a %.d file, only skel basenames (not
626# full paths) are specified as prerequisites for corresponding %.o
627# file. vpath directives below instruct make to search for skel files
628# in TRUNNER_OUTPUT, if they are not present in the working directory.
629vpath %.skel.h $(TRUNNER_OUTPUT)
630vpath %.lskel.h $(TRUNNER_OUTPUT)
631vpath %.subskel.h $(TRUNNER_OUTPUT)
632
633endif
634
635# ensure we set up tests.h header generation rule just once
636ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
637$(TRUNNER_TESTS_DIR)-tests-hdr := y
638$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
639 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
640 $$(shell (echo '/* Generated header, do not edit */'; \
641 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \
642 $(TRUNNER_TESTS_DIR)/*.c | sort ; \
643 ) > $$@)
644endif
645
646# compile individual test files
647# Note: we cd into output directory to ensure embedded BPF object is found
648$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
649 $(TRUNNER_TESTS_DIR)/%.c \
650 | $(TRUNNER_OUTPUT)/%.test.d
651 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
652 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -MMD -MT $$@ -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
653
654$(TRUNNER_TEST_OBJS:.o=.d): $(TRUNNER_OUTPUT)/%.test.d: \
655 $(TRUNNER_TESTS_DIR)/%.c \
656 $(TRUNNER_EXTRA_HDRS) \
657 $(TRUNNER_BPF_SKELS) \
658 $(TRUNNER_BPF_LSKELS) \
659 $(TRUNNER_BPF_LSKELS_SIGNED) \
660 $(TRUNNER_BPF_SKELS_LINKED) \
661 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
662
663ifeq ($(filter clean docs-clean,$(MAKECMDGOALS)),)
664include $(wildcard $(TRUNNER_TEST_OBJS:.o=.d))
665endif
666
667# add per extra obj CFGLAGS definitions
668$(foreach N,$(patsubst $(TRUNNER_OUTPUT)/%.o,%,$(TRUNNER_EXTRA_OBJS)), \
669 $(eval $(TRUNNER_OUTPUT)/$(N).o: CFLAGS += $($(N).c-CFLAGS)))
670
671$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
672 %.c \
673 $(TRUNNER_EXTRA_HDRS) \
674 $(VERIFY_SIG_HDR) \
675 $(TRUNNER_TESTS_HDR) \
676 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
677 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
678 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
679
680$(TRUNNER_LIB_OBJS): $(TRUNNER_OUTPUT)/%.o:$(TOOLSDIR)/lib/%.c
681 $$(call msg,LIB-OBJ,$(TRUNNER_BINARY),$$@)
682 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
683
684# non-flavored in-srctree builds receive special treatment, in particular, we
685# do not need to copy extra resources (see e.g. test_btf_dump_case())
686$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
687ifneq ($2:$(OUTPUT),:$(shell pwd))
688 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
689 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
690endif
691
692# some X.test.o files have runtime dependencies on Y.bpf.o files
693$(OUTPUT)/$(TRUNNER_BINARY): | $(TRUNNER_BPF_OBJS)
694
695$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
696 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
697 $(TRUNNER_LIB_OBJS) \
698 $(RESOLVE_BTFIDS) \
699 $(TRUNNER_BPFTOOL) \
700 $(OUTPUT)/veristat \
701 | $(TRUNNER_BINARY)-extras
702 $$(call msg,BINARY,,$$@)
703 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) $$(LLVM_LDLIBS) $$(LDFLAGS) $$(LLVM_LDFLAGS) -o $$@
704 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@
705 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \
706 $(OUTPUT)/$(if $2,$2/)bpftool
707
708endef
709
710VERIFY_SIG_SETUP := $(CURDIR)/verify_sig_setup.sh
711VERIFY_SIG_HDR := verification_cert.h
712VERIFICATION_CERT := $(BUILD_DIR)/signing_key.der
713PRIVATE_KEY := $(BUILD_DIR)/signing_key.pem
714
715$(VERIFICATION_CERT) $(PRIVATE_KEY): $(VERIFY_SIG_SETUP)
716 $(Q)mkdir -p $(BUILD_DIR)
717 $(Q)$(VERIFY_SIG_SETUP) genkey $(BUILD_DIR)
718
719$(VERIFY_SIG_HDR): $(VERIFICATION_CERT)
720 $(Q)ln -fs $< test_progs_verification_cert && \
721 xxd -i test_progs_verification_cert > $@
722
723# Define test_progs test runner.
724TRUNNER_TESTS_DIR := prog_tests
725TRUNNER_BPF_PROGS_DIR := progs
726TRUNNER_EXTRA_SOURCES := test_progs.c \
727 cgroup_helpers.c \
728 trace_helpers.c \
729 network_helpers.c \
730 testing_helpers.c \
731 btf_helpers.c \
732 cap_helpers.c \
733 unpriv_helpers.c \
734 netlink_helpers.c \
735 jit_disasm_helpers.c \
736 io_helpers.c \
737 test_loader.c \
738 xsk.c \
739 disasm.c \
740 disasm_helpers.c \
741 json_writer.c \
742 $(VERIFY_SIG_HDR) \
743 flow_dissector_load.h \
744 ip_check_defrag_frags.h
745TRUNNER_LIB_SOURCES := find_bit.c
746TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \
747 $(OUTPUT)/liburandom_read.so \
748 $(OUTPUT)/xdp_synproxy \
749 $(OUTPUT)/sign-file \
750 $(OUTPUT)/uprobe_multi \
751 $(TEST_KMOD_TARGETS) \
752 ima_setup.sh \
753 $(VERIFY_SIG_SETUP) \
754 $(wildcard progs/btf_dump_test_case_*.c) \
755 $(wildcard progs/*.bpf.o)
756TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
757TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
758$(eval $(call DEFINE_TEST_RUNNER,test_progs))
759
760# Define test_progs-no_alu32 test runner.
761TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
762TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
763$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
764
765# Define test_progs-cpuv4 test runner.
766ifneq ($(CLANG_CPUV4),)
767TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE
768TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
769$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4))
770endif
771
772# Define test_progs BPF-GCC-flavored test runner.
773ifneq ($(BPF_GCC),)
774TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
775TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,)
776$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
777endif
778
779# Define test_maps test runner.
780TRUNNER_TESTS_DIR := map_tests
781TRUNNER_BPF_PROGS_DIR := progs
782TRUNNER_EXTRA_SOURCES := test_maps.c
783TRUNNER_LIB_SOURCES :=
784TRUNNER_EXTRA_FILES :=
785TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
786TRUNNER_BPF_CFLAGS :=
787$(eval $(call DEFINE_TEST_RUNNER,test_maps))
788
789# Define test_verifier test runner.
790# It is much simpler than test_maps/test_progs and sufficiently different from
791# them (e.g., test.h is using completely pattern), that it's worth just
792# explicitly defining all the rules explicitly.
793verifier/tests.h: verifier/*.c
794 $(shell ( cd verifier/; \
795 echo '/* Generated header, do not edit */'; \
796 echo '#ifdef FILL_ARRAY'; \
797 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
798 echo '#endif' \
799 ) > verifier/tests.h)
800$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
801 $(call msg,BINARY,,$@)
802 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
803
804# Include find_bit.c to compile xskxceiver.
805EXTRA_SRC := $(TOOLSDIR)/lib/find_bit.c prog_tests/test_xsk.c prog_tests/test_xsk.h
806$(OUTPUT)/xskxceiver: $(EXTRA_SRC) xskxceiver.c xskxceiver.h $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT)
807 $(call msg,BINARY,,$@)
808 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
809
810$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT)
811 $(call msg,BINARY,,$@)
812 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
813
814$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT)
815 $(call msg,BINARY,,$@)
816 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
817
818# Make sure we are able to include and link libbpf against c++.
819CXXFLAGS += $(CFLAGS)
820CXXFLAGS := $(subst -D_GNU_SOURCE=,,$(CXXFLAGS))
821CXXFLAGS := $(subst -std=gnu11,-std=gnu++11,$(CXXFLAGS))
822$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
823 $(call msg,CXX,,$@)
824 $(Q)$(CXX) $(CXXFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
825
826# Benchmark runner
827$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
828 $(call msg,CC,,$@)
829 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
830$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
831$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
832$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
833 $(OUTPUT)/perfbuf_bench.skel.h
834$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
835$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h
836$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h
837$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h
838$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h
839$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h
840$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h
841$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h
842$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h
843$(OUTPUT)/bench_bpf_crypto.o: $(OUTPUT)/crypto_bench.skel.h
844$(OUTPUT)/bench_sockmap.o: $(OUTPUT)/bench_sockmap_prog.skel.h
845$(OUTPUT)/bench_lpm_trie_map.o: $(OUTPUT)/lpm_trie_bench.skel.h $(OUTPUT)/lpm_trie_map.skel.h
846$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
847$(OUTPUT)/bench: LDLIBS += -lm
848$(OUTPUT)/bench: $(OUTPUT)/bench.o \
849 $(TESTING_HELPERS) \
850 $(TRACE_HELPERS) \
851 $(CGROUP_HELPERS) \
852 $(OUTPUT)/bench_count.o \
853 $(OUTPUT)/bench_rename.o \
854 $(OUTPUT)/bench_trigger.o \
855 $(OUTPUT)/bench_ringbufs.o \
856 $(OUTPUT)/bench_bloom_filter_map.o \
857 $(OUTPUT)/bench_bpf_loop.o \
858 $(OUTPUT)/bench_strncmp.o \
859 $(OUTPUT)/bench_bpf_hashmap_full_update.o \
860 $(OUTPUT)/bench_local_storage.o \
861 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \
862 $(OUTPUT)/bench_bpf_hashmap_lookup.o \
863 $(OUTPUT)/bench_local_storage_create.o \
864 $(OUTPUT)/bench_htab_mem.o \
865 $(OUTPUT)/bench_bpf_crypto.o \
866 $(OUTPUT)/bench_sockmap.o \
867 $(OUTPUT)/bench_lpm_trie_map.o \
868 #
869 $(call msg,BINARY,,$@)
870 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
871
872# This works around GCC warning about snprintf truncating strings like:
873#
874# char a[PATH_MAX], b[PATH_MAX];
875# snprintf(a, "%s/foo", b); // triggers -Wformat-truncation
876$(OUTPUT)/veristat.o: CFLAGS += -Wno-format-truncation
877$(OUTPUT)/veristat.o: $(BPFOBJ)
878$(OUTPUT)/veristat: $(OUTPUT)/veristat.o
879 $(call msg,BINARY,,$@)
880 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
881
882# Linking uprobe_multi can fail due to relocation overflows on mips.
883$(OUTPUT)/uprobe_multi: CFLAGS += $(if $(filter mips, $(ARCH)),-mxgot)
884$(OUTPUT)/uprobe_multi: uprobe_multi.c uprobe_multi.ld
885 $(call msg,BINARY,,$@)
886 $(Q)$(CC) $(CFLAGS) -Wl,-T,uprobe_multi.ld -O0 $(LDFLAGS) \
887 $(filter-out %.ld,$^) $(LDLIBS) -o $@
888
889EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
890 prog_tests/tests.h map_tests/tests.h verifier/tests.h \
891 feature bpftool $(TEST_KMOD_TARGETS) \
892 $(addprefix $(OUTPUT)/,*.o *.d *.skel.h *.lskel.h *.subskel.h \
893 no_alu32 cpuv4 bpf_gcc \
894 liburandom_read.so) \
895 $(OUTPUT)/FEATURE-DUMP.selftests \
896 test_progs_verification_cert
897
898.PHONY: docs docs-clean
899
900# Delete partially updated (corrupted) files on error
901.DELETE_ON_ERROR:
902
903DEFAULT_INSTALL_RULE := $(INSTALL_RULE)
904override define INSTALL_RULE
905 $(DEFAULT_INSTALL_RULE)
906 @for DIR in $(TEST_INST_SUBDIRS); do \
907 mkdir -p $(INSTALL_PATH)/$$DIR; \
908 rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\
909 done
910endef