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