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_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_GEN_FILES += liburandom_read.so urandom_read sign-file
92
93# Emit succinct information message describing current building step
94# $1 - generic step name (e.g., CC, LINK, etc);
95# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
96# $3 - target (assumed to be file); only file name will be emitted;
97# $4 - optional extra arg, emitted as-is, if provided.
98ifeq ($(V),1)
99Q =
100msg =
101else
102Q = @
103msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
104MAKEFLAGS += --no-print-directory
105submake_extras := feature_display=0
106endif
107
108# override lib.mk's default rules
109OVERRIDE_TARGETS := 1
110override define CLEAN
111 $(call msg,CLEAN)
112 $(Q)$(RM) -r $(TEST_GEN_PROGS)
113 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED)
114 $(Q)$(RM) -r $(TEST_GEN_FILES)
115 $(Q)$(RM) -r $(EXTRA_CLEAN)
116 $(Q)$(MAKE) -C bpf_testmod clean
117 $(Q)$(MAKE) docs-clean
118endef
119
120include ../lib.mk
121
122SCRATCH_DIR := $(OUTPUT)/tools
123BUILD_DIR := $(SCRATCH_DIR)/build
124INCLUDE_DIR := $(SCRATCH_DIR)/include
125BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
126ifneq ($(CROSS_COMPILE),)
127HOST_BUILD_DIR := $(BUILD_DIR)/host
128HOST_SCRATCH_DIR := $(OUTPUT)/host-tools
129HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include
130else
131HOST_BUILD_DIR := $(BUILD_DIR)
132HOST_SCRATCH_DIR := $(SCRATCH_DIR)
133HOST_INCLUDE_DIR := $(INCLUDE_DIR)
134endif
135HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
136RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
137RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
138
139VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
140 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
141 ../../../../vmlinux \
142 /sys/kernel/btf/vmlinux \
143 /boot/vmlinux-$(shell uname -r)
144VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
145ifeq ($(VMLINUX_BTF),)
146$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
147endif
148
149# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
150# to build individual tests.
151# NOTE: Semicolon at the end is critical to override lib.mk's default static
152# rule for binaries.
153$(notdir $(TEST_GEN_PROGS) \
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 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \
160 $(HOST_BUILD_DIR)/resolve_btfids \
161 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR))
162$(MAKE_DIRS):
163 $(call msg,MKDIR,,$@)
164 $(Q)mkdir -p $@
165
166$(OUTPUT)/%.o: %.c
167 $(call msg,CC,,$@)
168 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
169
170$(OUTPUT)/%:%.c
171 $(call msg,BINARY,,$@)
172 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
173
174# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
175ifeq ($(SRCARCH),x86)
176LLD := lld
177else
178LLD := ld
179endif
180
181# Filter out -static for liburandom_read.so and its dependent targets so that static builds
182# do not fail. Static builds leave urandom_read relying on system-wide shared libraries.
183$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c
184 $(call msg,LIB,,$@)
185 $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \
186 $^ $(filter-out -static,$(LDLIBS)) \
187 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
188 -fPIC -shared -o $@
189
190$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
191 $(call msg,BINARY,,$@)
192 $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
193 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \
194 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
195 -Wl,-rpath=. -o $@
196
197$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c
198 $(call msg,SIGN-FILE,,$@)
199 $(Q)$(CC) $(shell $(HOSTPKG_CONFIG) --cflags libcrypto 2> /dev/null) \
200 $< -o $@ \
201 $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
202
203$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch])
204 $(call msg,MOD,,$@)
205 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation
206 $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_testmod
207 $(Q)cp bpf_testmod/bpf_testmod.ko $@
208
209DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
210ifneq ($(CROSS_COMPILE),)
211CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool
212TRUNNER_BPFTOOL := $(CROSS_BPFTOOL)
213USE_BOOTSTRAP := ""
214else
215TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL)
216USE_BOOTSTRAP := "bootstrap/"
217endif
218
219$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
220 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \
221 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \
222 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
223 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \
224 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \
225 EXTRA_CFLAGS='-g -O0 $(SAN_CFLAGS)' \
226 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' && \
227 cp $(RUNQSLOWER_OUTPUT)runqslower $@
228
229TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL)
230
231$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
232
233TESTING_HELPERS := $(OUTPUT)/testing_helpers.o
234CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o
235UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o
236TRACE_HELPERS := $(OUTPUT)/trace_helpers.o
237JSON_WRITER := $(OUTPUT)/json_writer.o
238CAP_HELPERS := $(OUTPUT)/cap_helpers.o
239
240$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS)
241$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
242$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS)
243$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS)
244$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS)
245$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS)
246$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
247$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS)
248$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS)
249$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS)
250$(OUTPUT)/test_tag: $(TESTING_HELPERS)
251$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS)
252$(OUTPUT)/xdping: $(TESTING_HELPERS)
253$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)
254$(OUTPUT)/test_maps: $(TESTING_HELPERS)
255$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS)
256$(OUTPUT)/xsk.o: $(BPFOBJ)
257
258BPFTOOL ?= $(DEFAULT_BPFTOOL)
259$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
260 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
261 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
262 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \
263 EXTRA_CFLAGS='-g -O0' \
264 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
265 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
266 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
267 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
268
269ifneq ($(CROSS_COMPILE),)
270$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
271 $(BPFOBJ) | $(BUILD_DIR)/bpftool
272 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
273 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \
274 EXTRA_CFLAGS='-g -O0' \
275 OUTPUT=$(BUILD_DIR)/bpftool/ \
276 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \
277 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \
278 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin
279endif
280
281all: docs
282
283docs:
284 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \
285 -f Makefile.docs \
286 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
287
288docs-clean:
289 $(Q)$(MAKE) $(submake_extras) \
290 -f Makefile.docs \
291 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
292
293$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
294 $(APIDIR)/linux/bpf.h \
295 | $(BUILD_DIR)/libbpf
296 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
297 EXTRA_CFLAGS='-g -O0 $(SAN_CFLAGS)' \
298 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' \
299 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
300
301ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
302$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
303 $(APIDIR)/linux/bpf.h \
304 | $(HOST_BUILD_DIR)/libbpf
305 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
306 EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \
307 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
308 CC="$(HOSTCC)" LD="$(HOSTLD)" \
309 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
310endif
311
312$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
313ifeq ($(VMLINUX_H),)
314 $(call msg,GEN,,$@)
315 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
316else
317 $(call msg,CP,,$@)
318 $(Q)cp "$(VMLINUX_H)" $@
319endif
320
321$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
322 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
323 $(TOOLSDIR)/lib/rbtree.c \
324 $(TOOLSDIR)/lib/zalloc.c \
325 $(TOOLSDIR)/lib/string.c \
326 $(TOOLSDIR)/lib/ctype.c \
327 $(TOOLSDIR)/lib/str_error_r.c
328 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
329 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \
330 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
331 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
332
333# Get Clang's default includes on this system, as opposed to those seen by
334# '-target bpf'. This fixes "missing" files on some architectures/distros,
335# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
336#
337# Use '-idirafter': Don't interfere with include mechanics except where the
338# build would have failed anyways.
339define get_sys_includes
340$(shell $(1) $(2) -v -E - </dev/null 2>&1 \
341 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
342$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \
343$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}')
344endef
345
346# Determine target endianness.
347IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
348 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
349MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
350
351ifneq ($(CROSS_COMPILE),)
352CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%))
353endif
354
355CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH))
356BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
357 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
358 -I$(abspath $(OUTPUT)/../usr/include)
359
360CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
361 -Wno-compare-distinct-pointer-types
362
363$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
364$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
365
366$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
367$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h
368
369# Build BPF object using Clang
370# $1 - input .c file
371# $2 - output .o file
372# $3 - CFLAGS
373define CLANG_BPF_BUILD_RULE
374 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
375 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v3 -o $2
376endef
377# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
378define CLANG_NOALU32_BPF_BUILD_RULE
379 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
380 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v2 -o $2
381endef
382# Build BPF object using GCC
383define GCC_BPF_BUILD_RULE
384 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
385 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
386endef
387
388SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
389
390LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
391 linked_vars.skel.h linked_maps.skel.h \
392 test_subskeleton.skel.h test_subskeleton_lib.skel.h \
393 test_usdt.skel.h
394
395LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \
396 trace_printk.c trace_vprintk.c map_ptr_kern.c \
397 core_kern.c core_kern_overflow.c test_ringbuf.c \
398 test_ringbuf_map_key.c
399
400# Generate both light skeleton and libbpf skeleton for these
401LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \
402 kfunc_call_test_subprog.c
403SKEL_BLACKLIST += $$(LSKELS)
404
405test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o
406linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o
407linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o
408linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o
409# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file
410# but that's created as a side-effect of the skel.h generation.
411test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o
412test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o
413test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o
414xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o
415xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o
416xdp_features.skel.h-deps := xdp_features.bpf.o
417
418LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps)))
419
420# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
421# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
422# Parameters:
423# $1 - test runner base binary name (e.g., test_progs)
424# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
425define DEFINE_TEST_RUNNER
426
427TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
428TRUNNER_BINARY := $1$(if $2,-)$2
429TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
430 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
431TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
432 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
433TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
434TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
435TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
436TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS))
437TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
438 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
439 $$(TRUNNER_BPF_SRCS)))
440TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
441TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
442TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
443
444# Evaluate rules now with extra TRUNNER_XXX variables above already defined
445$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
446
447endef
448
449# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
450# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
451# $1 - test runner base binary name (e.g., test_progs)
452# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
453define DEFINE_TEST_RUNNER_RULES
454
455ifeq ($($(TRUNNER_OUTPUT)-dir),)
456$(TRUNNER_OUTPUT)-dir := y
457$(TRUNNER_OUTPUT):
458 $$(call msg,MKDIR,,$$@)
459 $(Q)mkdir -p $$@
460endif
461
462# ensure we set up BPF objects generation rule just once for a given
463# input/output directory combination
464ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
465$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
466$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \
467 $(TRUNNER_BPF_PROGS_DIR)/%.c \
468 $(TRUNNER_BPF_PROGS_DIR)/*.h \
469 $$(INCLUDE_DIR)/vmlinux.h \
470 $(wildcard $(BPFDIR)/bpf_*.h) \
471 $(wildcard $(BPFDIR)/*.bpf.h) \
472 | $(TRUNNER_OUTPUT) $$(BPFOBJ)
473 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
474 $(TRUNNER_BPF_CFLAGS))
475
476$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
477 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
478 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
479 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
480 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
481 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
482 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@
483 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h)
484
485$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
486 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
487 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$<
488 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o)
489 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o)
490 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
491 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@
492
493$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT)
494 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o))
495 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps))
496 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o)
497 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o)
498 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
499 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
500 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@
501 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h)
502endif
503
504# ensure we set up tests.h header generation rule just once
505ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
506$(TRUNNER_TESTS_DIR)-tests-hdr := y
507$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
508 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
509 $$(shell (echo '/* Generated header, do not edit */'; \
510 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \
511 $(TRUNNER_TESTS_DIR)/*.c | sort ; \
512 ) > $$@)
513endif
514
515# compile individual test files
516# Note: we cd into output directory to ensure embedded BPF object is found
517$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
518 $(TRUNNER_TESTS_DIR)/%.c \
519 $(TRUNNER_EXTRA_HDRS) \
520 $(TRUNNER_BPF_OBJS) \
521 $(TRUNNER_BPF_SKELS) \
522 $(TRUNNER_BPF_LSKELS) \
523 $(TRUNNER_BPF_SKELS_LINKED) \
524 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
525 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
526 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
527
528$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
529 %.c \
530 $(TRUNNER_EXTRA_HDRS) \
531 $(TRUNNER_TESTS_HDR) \
532 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
533 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
534 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
535
536# non-flavored in-srctree builds receive special treatment, in particular, we
537# do not need to copy extra resources (see e.g. test_btf_dump_case())
538$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
539ifneq ($2:$(OUTPUT),:$(shell pwd))
540 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
541 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
542endif
543
544$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
545 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
546 $(RESOLVE_BTFIDS) \
547 $(TRUNNER_BPFTOOL) \
548 | $(TRUNNER_BINARY)-extras
549 $$(call msg,BINARY,,$$@)
550 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
551 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@
552 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \
553 $(OUTPUT)/$(if $2,$2/)bpftool
554
555endef
556
557# Define test_progs test runner.
558TRUNNER_TESTS_DIR := prog_tests
559TRUNNER_BPF_PROGS_DIR := progs
560TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \
561 network_helpers.c testing_helpers.c \
562 btf_helpers.c flow_dissector_load.h \
563 cap_helpers.c test_loader.c xsk.c disasm.c \
564 json_writer.c unpriv_helpers.c
565
566TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \
567 $(OUTPUT)/liburandom_read.so \
568 $(OUTPUT)/xdp_synproxy \
569 $(OUTPUT)/sign-file \
570 ima_setup.sh \
571 verify_sig_setup.sh \
572 $(wildcard progs/btf_dump_test_case_*.c) \
573 $(wildcard progs/*.bpf.o)
574TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
575TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
576$(eval $(call DEFINE_TEST_RUNNER,test_progs))
577
578# Define test_progs-no_alu32 test runner.
579TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
580TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
581$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
582
583# Define test_progs BPF-GCC-flavored test runner.
584ifneq ($(BPF_GCC),)
585TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
586TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,)
587$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
588endif
589
590# Define test_maps test runner.
591TRUNNER_TESTS_DIR := map_tests
592TRUNNER_BPF_PROGS_DIR := progs
593TRUNNER_EXTRA_SOURCES := test_maps.c
594TRUNNER_EXTRA_FILES :=
595TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
596TRUNNER_BPF_CFLAGS :=
597$(eval $(call DEFINE_TEST_RUNNER,test_maps))
598
599# Define test_verifier test runner.
600# It is much simpler than test_maps/test_progs and sufficiently different from
601# them (e.g., test.h is using completely pattern), that it's worth just
602# explicitly defining all the rules explicitly.
603verifier/tests.h: verifier/*.c
604 $(shell ( cd verifier/; \
605 echo '/* Generated header, do not edit */'; \
606 echo '#ifdef FILL_ARRAY'; \
607 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
608 echo '#endif' \
609 ) > verifier/tests.h)
610$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
611 $(call msg,BINARY,,$@)
612 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
613
614$(OUTPUT)/xskxceiver: xskxceiver.c xskxceiver.h $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT)
615 $(call msg,BINARY,,$@)
616 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
617
618$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT)
619 $(call msg,BINARY,,$@)
620 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
621
622$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT)
623 $(call msg,BINARY,,$@)
624 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
625
626# Make sure we are able to include and link libbpf against c++.
627$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
628 $(call msg,CXX,,$@)
629 $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
630
631# Benchmark runner
632$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
633 $(call msg,CC,,$@)
634 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
635$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
636$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
637$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
638 $(OUTPUT)/perfbuf_bench.skel.h
639$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
640$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h
641$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h
642$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h
643$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h
644$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h
645$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h
646$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h
647$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
648$(OUTPUT)/bench: LDLIBS += -lm
649$(OUTPUT)/bench: $(OUTPUT)/bench.o \
650 $(TESTING_HELPERS) \
651 $(TRACE_HELPERS) \
652 $(OUTPUT)/bench_count.o \
653 $(OUTPUT)/bench_rename.o \
654 $(OUTPUT)/bench_trigger.o \
655 $(OUTPUT)/bench_ringbufs.o \
656 $(OUTPUT)/bench_bloom_filter_map.o \
657 $(OUTPUT)/bench_bpf_loop.o \
658 $(OUTPUT)/bench_strncmp.o \
659 $(OUTPUT)/bench_bpf_hashmap_full_update.o \
660 $(OUTPUT)/bench_local_storage.o \
661 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \
662 $(OUTPUT)/bench_bpf_hashmap_lookup.o \
663 $(OUTPUT)/bench_local_storage_create.o \
664 #
665 $(call msg,BINARY,,$@)
666 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
667
668$(OUTPUT)/veristat.o: $(BPFOBJ)
669$(OUTPUT)/veristat: $(OUTPUT)/veristat.o
670 $(call msg,BINARY,,$@)
671 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
672
673EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
674 prog_tests/tests.h map_tests/tests.h verifier/tests.h \
675 feature bpftool \
676 $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h \
677 no_alu32 bpf_gcc bpf_testmod.ko \
678 liburandom_read.so)
679
680.PHONY: docs docs-clean
681
682# Delete partially updated (corrupted) files on error
683.DELETE_ON_ERROR: