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
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 ?=
25SAN_LDFLAGS ?= $(SAN_CFLAGS)
26CFLAGS += -g -O0 -rdynamic -Wall -Werror $(GENFLAGS) $(SAN_CFLAGS) \
27 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \
28 -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT)
29LDFLAGS += $(SAN_LDFLAGS)
30LDLIBS += -lelf -lz -lrt -lpthread
31
32# Silence some warnings when compiled with clang
33ifneq ($(LLVM),)
34CFLAGS += -Wno-unused-command-line-argument
35endif
36
37# Order correspond to 'make run_tests' order
38TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
39 test_verifier_log test_dev_cgroup \
40 test_sock test_sockmap get_cgroup_id_user \
41 test_cgroup_storage \
42 test_tcpnotify_user test_sysctl \
43 test_progs-no_alu32
44
45# Also test bpf-gcc, if present
46ifneq ($(BPF_GCC),)
47TEST_GEN_PROGS += test_progs-bpf_gcc
48endif
49
50TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_tc_edt.bpf.o
51TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)
52
53# Order correspond to 'make run_tests' order
54TEST_PROGS := test_kmod.sh \
55 test_xdp_redirect.sh \
56 test_xdp_redirect_multi.sh \
57 test_xdp_meta.sh \
58 test_xdp_veth.sh \
59 test_offload.py \
60 test_sock_addr.sh \
61 test_tunnel.sh \
62 test_lwt_seg6local.sh \
63 test_lirc_mode2.sh \
64 test_skb_cgroup_id.sh \
65 test_flow_dissector.sh \
66 test_xdp_vlan_mode_generic.sh \
67 test_xdp_vlan_mode_native.sh \
68 test_lwt_ip_encap.sh \
69 test_tcp_check_syncookie.sh \
70 test_tc_tunnel.sh \
71 test_tc_edt.sh \
72 test_xdping.sh \
73 test_bpftool_build.sh \
74 test_bpftool.sh \
75 test_bpftool_metadata.sh \
76 test_doc_build.sh \
77 test_xsk.sh \
78 test_xdp_features.sh
79
80TEST_PROGS_EXTENDED := with_addr.sh \
81 with_tunnels.sh ima_setup.sh verify_sig_setup.sh \
82 test_xdp_vlan.sh test_bpftool.py
83
84# Compile but not part of 'make run_tests'
85TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
86 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
87 test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
88 xskxceiver xdp_redirect_multi xdp_synproxy veristat xdp_hw_metadata \
89 xdp_features
90
91TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read $(OUTPUT)/sign-file
92TEST_GEN_FILES += liburandom_read.so
93
94# Emit succinct information message describing current building step
95# $1 - generic step name (e.g., CC, LINK, etc);
96# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
97# $3 - target (assumed to be file); only file name will be emitted;
98# $4 - optional extra arg, emitted as-is, if provided.
99ifeq ($(V),1)
100Q =
101msg =
102else
103Q = @
104msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
105MAKEFLAGS += --no-print-directory
106submake_extras := feature_display=0
107endif
108
109# override lib.mk's default rules
110OVERRIDE_TARGETS := 1
111override define CLEAN
112 $(call msg,CLEAN)
113 $(Q)$(RM) -r $(TEST_GEN_PROGS)
114 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED)
115 $(Q)$(RM) -r $(TEST_GEN_FILES)
116 $(Q)$(RM) -r $(EXTRA_CLEAN)
117 $(Q)$(MAKE) -C bpf_testmod clean
118 $(Q)$(MAKE) docs-clean
119endef
120
121include ../lib.mk
122
123SCRATCH_DIR := $(OUTPUT)/tools
124BUILD_DIR := $(SCRATCH_DIR)/build
125INCLUDE_DIR := $(SCRATCH_DIR)/include
126BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
127ifneq ($(CROSS_COMPILE),)
128HOST_BUILD_DIR := $(BUILD_DIR)/host
129HOST_SCRATCH_DIR := $(OUTPUT)/host-tools
130HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include
131else
132HOST_BUILD_DIR := $(BUILD_DIR)
133HOST_SCRATCH_DIR := $(SCRATCH_DIR)
134HOST_INCLUDE_DIR := $(INCLUDE_DIR)
135endif
136HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
137RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
138RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
139
140VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
141 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
142 ../../../../vmlinux \
143 /sys/kernel/btf/vmlinux \
144 /boot/vmlinux-$(shell uname -r)
145VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
146ifeq ($(VMLINUX_BTF),)
147$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
148endif
149
150# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
151# to build individual tests.
152# NOTE: Semicolon at the end is critical to override lib.mk's default static
153# rule for binaries.
154$(notdir $(TEST_GEN_PROGS) \
155 $(TEST_GEN_PROGS_EXTENDED) \
156 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
157
158# sort removes libbpf duplicates when not cross-building
159MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \
160 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \
161 $(HOST_BUILD_DIR)/resolve_btfids \
162 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR))
163$(MAKE_DIRS):
164 $(call msg,MKDIR,,$@)
165 $(Q)mkdir -p $@
166
167$(OUTPUT)/%.o: %.c
168 $(call msg,CC,,$@)
169 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
170
171$(OUTPUT)/%:%.c
172 $(call msg,BINARY,,$@)
173 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
174
175# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
176ifeq ($(SRCARCH),x86)
177LLD := lld
178else
179LLD := ld
180endif
181
182# Filter out -static for liburandom_read.so and its dependent targets so that static builds
183# do not fail. Static builds leave urandom_read relying on system-wide shared libraries.
184$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c
185 $(call msg,LIB,,$@)
186 $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \
187 $^ $(filter-out -static,$(LDLIBS)) \
188 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
189 -fPIC -shared -o $@
190
191$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
192 $(call msg,BINARY,,$@)
193 $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
194 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \
195 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
196 -Wl,-rpath=. -o $@
197
198$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c
199 $(call msg,SIGN-FILE,,$@)
200 $(Q)$(CC) $(shell $(HOSTPKG_CONFIG)--cflags libcrypto 2> /dev/null) \
201 $< -o $@ \
202 $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
203
204$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch])
205 $(call msg,MOD,,$@)
206 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation
207 $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_testmod
208 $(Q)cp bpf_testmod/bpf_testmod.ko $@
209
210DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
211ifneq ($(CROSS_COMPILE),)
212CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool
213TRUNNER_BPFTOOL := $(CROSS_BPFTOOL)
214USE_BOOTSTRAP := ""
215else
216TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL)
217USE_BOOTSTRAP := "bootstrap/"
218endif
219
220$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
221 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \
222 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \
223 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
224 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \
225 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \
226 EXTRA_CFLAGS='-g -O0 $(SAN_CFLAGS)' \
227 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' && \
228 cp $(RUNQSLOWER_OUTPUT)runqslower $@
229
230TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL)
231
232$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
233
234CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o
235TESTING_HELPERS := $(OUTPUT)/testing_helpers.o
236TRACE_HELPERS := $(OUTPUT)/trace_helpers.o
237CAP_HELPERS := $(OUTPUT)/cap_helpers.o
238
239$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS)
240$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
241$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS)
242$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS)
243$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS)
244$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS)
245$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
246$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS)
247$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS)
248$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS)
249$(OUTPUT)/test_tag: $(TESTING_HELPERS)
250$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS)
251$(OUTPUT)/xdping: $(TESTING_HELPERS)
252$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)
253$(OUTPUT)/test_maps: $(TESTING_HELPERS)
254$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS)
255$(OUTPUT)/xsk.o: $(BPFOBJ)
256
257BPFTOOL ?= $(DEFAULT_BPFTOOL)
258$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
259 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
260 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
261 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \
262 EXTRA_CFLAGS='-g -O0' \
263 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
264 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
265 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
266 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
267
268ifneq ($(CROSS_COMPILE),)
269$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
270 $(BPFOBJ) | $(BUILD_DIR)/bpftool
271 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
272 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \
273 EXTRA_CFLAGS='-g -O0' \
274 OUTPUT=$(BUILD_DIR)/bpftool/ \
275 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \
276 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \
277 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin
278endif
279
280all: docs
281
282docs:
283 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \
284 -f Makefile.docs \
285 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
286
287docs-clean:
288 $(Q)$(MAKE) $(submake_extras) \
289 -f Makefile.docs \
290 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
291
292$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
293 $(APIDIR)/linux/bpf.h \
294 | $(BUILD_DIR)/libbpf
295 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
296 EXTRA_CFLAGS='-g -O0 $(SAN_CFLAGS)' \
297 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' \
298 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
299
300ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
301$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
302 $(APIDIR)/linux/bpf.h \
303 | $(HOST_BUILD_DIR)/libbpf
304 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
305 EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \
306 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
307 CC="$(HOSTCC)" LD="$(HOSTLD)" \
308 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
309endif
310
311$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
312ifeq ($(VMLINUX_H),)
313 $(call msg,GEN,,$@)
314 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
315else
316 $(call msg,CP,,$@)
317 $(Q)cp "$(VMLINUX_H)" $@
318endif
319
320$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
321 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
322 $(TOOLSDIR)/lib/rbtree.c \
323 $(TOOLSDIR)/lib/zalloc.c \
324 $(TOOLSDIR)/lib/string.c \
325 $(TOOLSDIR)/lib/ctype.c \
326 $(TOOLSDIR)/lib/str_error_r.c
327 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
328 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \
329 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
330 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
331
332# Get Clang's default includes on this system, as opposed to those seen by
333# '-target bpf'. This fixes "missing" files on some architectures/distros,
334# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
335#
336# Use '-idirafter': Don't interfere with include mechanics except where the
337# build would have failed anyways.
338define get_sys_includes
339$(shell $(1) $(2) -v -E - </dev/null 2>&1 \
340 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
341$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}')
342endef
343
344# Determine target endianness.
345IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
346 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
347MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
348
349ifneq ($(CROSS_COMPILE),)
350CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%))
351endif
352
353CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH))
354BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
355 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
356 -I$(abspath $(OUTPUT)/../usr/include)
357
358CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
359 -Wno-compare-distinct-pointer-types
360
361$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
362$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
363
364$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
365$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h
366
367# Build BPF object using Clang
368# $1 - input .c file
369# $2 - output .o file
370# $3 - CFLAGS
371define CLANG_BPF_BUILD_RULE
372 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
373 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v3 -o $2
374endef
375# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
376define CLANG_NOALU32_BPF_BUILD_RULE
377 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
378 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v2 -o $2
379endef
380# Build BPF object using GCC
381define GCC_BPF_BUILD_RULE
382 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
383 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
384endef
385
386SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
387
388LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
389 linked_vars.skel.h linked_maps.skel.h \
390 test_subskeleton.skel.h test_subskeleton_lib.skel.h \
391 test_usdt.skel.h
392
393LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \
394 trace_printk.c trace_vprintk.c map_ptr_kern.c \
395 core_kern.c core_kern_overflow.c test_ringbuf.c \
396 test_ringbuf_map_key.c
397
398# Generate both light skeleton and libbpf skeleton for these
399LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \
400 kfunc_call_test_subprog.c
401SKEL_BLACKLIST += $$(LSKELS)
402
403test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o
404linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o
405linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o
406linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o
407# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file
408# but that's created as a side-effect of the skel.h generation.
409test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o
410test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o
411test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o
412xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o
413xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o
414xdp_features.skel.h-deps := xdp_features.bpf.o
415
416LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps)))
417
418# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
419# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
420# Parameters:
421# $1 - test runner base binary name (e.g., test_progs)
422# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
423define DEFINE_TEST_RUNNER
424
425TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
426TRUNNER_BINARY := $1$(if $2,-)$2
427TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
428 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
429TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
430 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
431TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
432TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
433TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
434TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS))
435TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
436 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
437 $$(TRUNNER_BPF_SRCS)))
438TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
439TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
440TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
441
442# Evaluate rules now with extra TRUNNER_XXX variables above already defined
443$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
444
445endef
446
447# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
448# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
449# $1 - test runner base binary name (e.g., test_progs)
450# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
451define DEFINE_TEST_RUNNER_RULES
452
453ifeq ($($(TRUNNER_OUTPUT)-dir),)
454$(TRUNNER_OUTPUT)-dir := y
455$(TRUNNER_OUTPUT):
456 $$(call msg,MKDIR,,$$@)
457 $(Q)mkdir -p $$@
458endif
459
460# ensure we set up BPF objects generation rule just once for a given
461# input/output directory combination
462ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
463$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
464$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \
465 $(TRUNNER_BPF_PROGS_DIR)/%.c \
466 $(TRUNNER_BPF_PROGS_DIR)/*.h \
467 $$(INCLUDE_DIR)/vmlinux.h \
468 $(wildcard $(BPFDIR)/bpf_*.h) \
469 $(wildcard $(BPFDIR)/*.bpf.h) \
470 | $(TRUNNER_OUTPUT) $$(BPFOBJ)
471 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
472 $(TRUNNER_BPF_CFLAGS))
473
474$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
475 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
476 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
477 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
478 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
479 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
480 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@
481 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h)
482
483$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
484 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
485 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$<
486 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o)
487 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o)
488 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
489 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@
490
491$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT)
492 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o))
493 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps))
494 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o)
495 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o)
496 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
497 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
498 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@
499 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h)
500endif
501
502# ensure we set up tests.h header generation rule just once
503ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
504$(TRUNNER_TESTS_DIR)-tests-hdr := y
505$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
506 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
507 $$(shell (echo '/* Generated header, do not edit */'; \
508 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \
509 $(TRUNNER_TESTS_DIR)/*.c | sort ; \
510 ) > $$@)
511endif
512
513# compile individual test files
514# Note: we cd into output directory to ensure embedded BPF object is found
515$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
516 $(TRUNNER_TESTS_DIR)/%.c \
517 $(TRUNNER_EXTRA_HDRS) \
518 $(TRUNNER_BPF_OBJS) \
519 $(TRUNNER_BPF_SKELS) \
520 $(TRUNNER_BPF_LSKELS) \
521 $(TRUNNER_BPF_SKELS_LINKED) \
522 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
523 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
524 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
525
526$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
527 %.c \
528 $(TRUNNER_EXTRA_HDRS) \
529 $(TRUNNER_TESTS_HDR) \
530 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
531 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
532 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
533
534# non-flavored in-srctree builds receive special treatment, in particular, we
535# do not need to copy extra resources (see e.g. test_btf_dump_case())
536$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
537ifneq ($2:$(OUTPUT),:$(shell pwd))
538 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
539 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
540endif
541
542$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
543 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
544 $(RESOLVE_BTFIDS) \
545 $(TRUNNER_BPFTOOL) \
546 | $(TRUNNER_BINARY)-extras
547 $$(call msg,BINARY,,$$@)
548 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
549 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@
550 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \
551 $(OUTPUT)/$(if $2,$2/)bpftool
552
553endef
554
555# Define test_progs test runner.
556TRUNNER_TESTS_DIR := prog_tests
557TRUNNER_BPF_PROGS_DIR := progs
558TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \
559 network_helpers.c testing_helpers.c \
560 btf_helpers.c flow_dissector_load.h \
561 cap_helpers.c test_loader.c xsk.c
562TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \
563 $(OUTPUT)/liburandom_read.so \
564 $(OUTPUT)/xdp_synproxy \
565 $(OUTPUT)/sign-file \
566 ima_setup.sh \
567 verify_sig_setup.sh \
568 $(wildcard progs/btf_dump_test_case_*.c) \
569 $(wildcard progs/*.bpf.o)
570TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
571TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
572$(eval $(call DEFINE_TEST_RUNNER,test_progs))
573
574# Define test_progs-no_alu32 test runner.
575TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
576TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
577$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
578
579# Define test_progs BPF-GCC-flavored test runner.
580ifneq ($(BPF_GCC),)
581TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
582TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,)
583$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
584endif
585
586# Define test_maps test runner.
587TRUNNER_TESTS_DIR := map_tests
588TRUNNER_BPF_PROGS_DIR := progs
589TRUNNER_EXTRA_SOURCES := test_maps.c
590TRUNNER_EXTRA_FILES :=
591TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
592TRUNNER_BPF_CFLAGS :=
593$(eval $(call DEFINE_TEST_RUNNER,test_maps))
594
595# Define test_verifier test runner.
596# It is much simpler than test_maps/test_progs and sufficiently different from
597# them (e.g., test.h is using completely pattern), that it's worth just
598# explicitly defining all the rules explicitly.
599verifier/tests.h: verifier/*.c
600 $(shell ( cd verifier/; \
601 echo '/* Generated header, do not edit */'; \
602 echo '#ifdef FILL_ARRAY'; \
603 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
604 echo '#endif' \
605 ) > verifier/tests.h)
606$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
607 $(call msg,BINARY,,$@)
608 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
609
610$(OUTPUT)/xskxceiver: xskxceiver.c $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT)
611 $(call msg,BINARY,,$@)
612 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
613
614$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT)
615 $(call msg,BINARY,,$@)
616 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
617
618$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT)
619 $(call msg,BINARY,,$@)
620 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
621
622# Make sure we are able to include and link libbpf against c++.
623$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
624 $(call msg,CXX,,$@)
625 $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
626
627# Benchmark runner
628$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
629 $(call msg,CC,,$@)
630 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
631$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
632$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
633$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
634 $(OUTPUT)/perfbuf_bench.skel.h
635$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
636$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h
637$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h
638$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h
639$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h
640$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h
641$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h
642$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
643$(OUTPUT)/bench: LDLIBS += -lm
644$(OUTPUT)/bench: $(OUTPUT)/bench.o \
645 $(TESTING_HELPERS) \
646 $(TRACE_HELPERS) \
647 $(OUTPUT)/bench_count.o \
648 $(OUTPUT)/bench_rename.o \
649 $(OUTPUT)/bench_trigger.o \
650 $(OUTPUT)/bench_ringbufs.o \
651 $(OUTPUT)/bench_bloom_filter_map.o \
652 $(OUTPUT)/bench_bpf_loop.o \
653 $(OUTPUT)/bench_strncmp.o \
654 $(OUTPUT)/bench_bpf_hashmap_full_update.o \
655 $(OUTPUT)/bench_local_storage.o \
656 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \
657 $(OUTPUT)/bench_bpf_hashmap_lookup.o \
658 #
659 $(call msg,BINARY,,$@)
660 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
661
662$(OUTPUT)/veristat.o: $(BPFOBJ)
663$(OUTPUT)/veristat: $(OUTPUT)/veristat.o
664 $(call msg,BINARY,,$@)
665 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
666
667EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
668 prog_tests/tests.h map_tests/tests.h verifier/tests.h \
669 feature bpftool \
670 $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h \
671 no_alu32 bpf_gcc bpf_testmod.ko \
672 liburandom_read.so)
673
674.PHONY: docs docs-clean
675
676# Delete partially updated (corrupted) files on error
677.DELETE_ON_ERROR: