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 := $(TOOLSINCDIR)/uapi
15ifneq ($(O),)
16GENDIR := $(O)/include/generated
17else
18GENDIR := $(abspath ../../../../include/generated)
19endif
20GENHDR := $(GENDIR)/autoconf.h
21HOSTPKG_CONFIG := pkg-config
22
23ifneq ($(wildcard $(GENHDR)),)
24 GENFLAGS := -DHAVE_GENHDR
25endif
26
27BPF_GCC ?= $(shell command -v bpf-gcc;)
28SAN_CFLAGS ?=
29SAN_LDFLAGS ?= $(SAN_CFLAGS)
30RELEASE ?=
31OPT_FLAGS ?= $(if $(RELEASE),-O2,-O0)
32CFLAGS += -g $(OPT_FLAGS) -rdynamic \
33 -Wall -Werror \
34 $(GENFLAGS) $(SAN_CFLAGS) \
35 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \
36 -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT)
37LDFLAGS += $(SAN_LDFLAGS)
38LDLIBS += -lelf -lz -lrt -lpthread
39
40ifneq ($(LLVM),)
41# Silence some warnings when compiled with clang
42CFLAGS += -Wno-unused-command-line-argument
43endif
44
45# Check whether bpf cpu=v4 is supported or not by clang
46ifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),)
47CLANG_CPUV4 := 1
48endif
49
50# Order correspond to 'make run_tests' order
51TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
52 test_dev_cgroup \
53 test_sock test_sockmap get_cgroup_id_user \
54 test_cgroup_storage \
55 test_tcpnotify_user test_sysctl \
56 test_progs-no_alu32
57TEST_INST_SUBDIRS := no_alu32
58
59# Also test bpf-gcc, if present
60ifneq ($(BPF_GCC),)
61TEST_GEN_PROGS += test_progs-bpf_gcc
62TEST_INST_SUBDIRS += bpf_gcc
63endif
64
65ifneq ($(CLANG_CPUV4),)
66TEST_GEN_PROGS += test_progs-cpuv4
67TEST_INST_SUBDIRS += cpuv4
68endif
69
70TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_tc_edt.bpf.o
71TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)
72
73# Order correspond to 'make run_tests' order
74TEST_PROGS := test_kmod.sh \
75 test_xdp_redirect.sh \
76 test_xdp_redirect_multi.sh \
77 test_xdp_meta.sh \
78 test_xdp_veth.sh \
79 test_offload.py \
80 test_sock_addr.sh \
81 test_tunnel.sh \
82 test_lwt_seg6local.sh \
83 test_lirc_mode2.sh \
84 test_skb_cgroup_id.sh \
85 test_flow_dissector.sh \
86 test_xdp_vlan_mode_generic.sh \
87 test_xdp_vlan_mode_native.sh \
88 test_lwt_ip_encap.sh \
89 test_tcp_check_syncookie.sh \
90 test_tc_tunnel.sh \
91 test_tc_edt.sh \
92 test_xdping.sh \
93 test_bpftool_build.sh \
94 test_bpftool.sh \
95 test_bpftool_metadata.sh \
96 test_doc_build.sh \
97 test_xsk.sh \
98 test_xdp_features.sh
99
100TEST_PROGS_EXTENDED := with_addr.sh \
101 with_tunnels.sh ima_setup.sh verify_sig_setup.sh \
102 test_xdp_vlan.sh test_bpftool.py
103
104# Compile but not part of 'make run_tests'
105TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
106 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
107 test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
108 xskxceiver xdp_redirect_multi xdp_synproxy veristat xdp_hw_metadata \
109 xdp_features
110
111TEST_GEN_FILES += liburandom_read.so urandom_read sign-file uprobe_multi
112
113# Emit succinct information message describing current building step
114# $1 - generic step name (e.g., CC, LINK, etc);
115# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
116# $3 - target (assumed to be file); only file name will be emitted;
117# $4 - optional extra arg, emitted as-is, if provided.
118ifeq ($(V),1)
119Q =
120msg =
121else
122Q = @
123msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
124MAKEFLAGS += --no-print-directory
125submake_extras := feature_display=0
126endif
127
128# override lib.mk's default rules
129OVERRIDE_TARGETS := 1
130override define CLEAN
131 $(call msg,CLEAN)
132 $(Q)$(RM) -r $(TEST_GEN_PROGS)
133 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED)
134 $(Q)$(RM) -r $(TEST_GEN_FILES)
135 $(Q)$(RM) -r $(EXTRA_CLEAN)
136 $(Q)$(MAKE) -C bpf_testmod clean
137 $(Q)$(MAKE) docs-clean
138endef
139
140include ../lib.mk
141
142SCRATCH_DIR := $(OUTPUT)/tools
143BUILD_DIR := $(SCRATCH_DIR)/build
144INCLUDE_DIR := $(SCRATCH_DIR)/include
145BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
146ifneq ($(CROSS_COMPILE),)
147HOST_BUILD_DIR := $(BUILD_DIR)/host
148HOST_SCRATCH_DIR := $(OUTPUT)/host-tools
149HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include
150else
151HOST_BUILD_DIR := $(BUILD_DIR)
152HOST_SCRATCH_DIR := $(SCRATCH_DIR)
153HOST_INCLUDE_DIR := $(INCLUDE_DIR)
154endif
155HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
156RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
157RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
158
159VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
160 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
161 ../../../../vmlinux \
162 /sys/kernel/btf/vmlinux \
163 /boot/vmlinux-$(shell uname -r)
164VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
165ifeq ($(VMLINUX_BTF),)
166$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
167endif
168
169# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
170# to build individual tests.
171# NOTE: Semicolon at the end is critical to override lib.mk's default static
172# rule for binaries.
173$(notdir $(TEST_GEN_PROGS) \
174 $(TEST_GEN_PROGS_EXTENDED) \
175 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
176
177# sort removes libbpf duplicates when not cross-building
178MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \
179 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \
180 $(HOST_BUILD_DIR)/resolve_btfids \
181 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR))
182$(MAKE_DIRS):
183 $(call msg,MKDIR,,$@)
184 $(Q)mkdir -p $@
185
186$(OUTPUT)/%.o: %.c
187 $(call msg,CC,,$@)
188 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
189
190$(OUTPUT)/%:%.c
191 $(call msg,BINARY,,$@)
192 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
193
194# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
195ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv))
196LLD := lld
197else
198LLD := ld
199endif
200
201# Filter out -static for liburandom_read.so and its dependent targets so that static builds
202# do not fail. Static builds leave urandom_read relying on system-wide shared libraries.
203$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom_read.map
204 $(call msg,LIB,,$@)
205 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \
206 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \
207 $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \
208 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
209 -Wl,--version-script=liburandom_read.map \
210 -fPIC -shared -o $@
211
212$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
213 $(call msg,BINARY,,$@)
214 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \
215 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
216 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \
217 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
218 -Wl,-rpath=. -o $@
219
220$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c
221 $(call msg,SIGN-FILE,,$@)
222 $(Q)$(CC) $(shell $(HOSTPKG_CONFIG) --cflags libcrypto 2> /dev/null) \
223 $< -o $@ \
224 $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
225
226$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch])
227 $(call msg,MOD,,$@)
228 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation
229 $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_testmod
230 $(Q)cp bpf_testmod/bpf_testmod.ko $@
231
232DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
233ifneq ($(CROSS_COMPILE),)
234CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool
235TRUNNER_BPFTOOL := $(CROSS_BPFTOOL)
236USE_BOOTSTRAP := ""
237else
238TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL)
239USE_BOOTSTRAP := "bootstrap/"
240endif
241
242$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
243 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \
244 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \
245 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
246 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \
247 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \
248 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS)' \
249 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' && \
250 cp $(RUNQSLOWER_OUTPUT)runqslower $@
251
252TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL)
253
254$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
255
256TESTING_HELPERS := $(OUTPUT)/testing_helpers.o
257CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o
258UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o
259TRACE_HELPERS := $(OUTPUT)/trace_helpers.o
260JSON_WRITER := $(OUTPUT)/json_writer.o
261CAP_HELPERS := $(OUTPUT)/cap_helpers.o
262
263$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS)
264$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
265$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS)
266$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS)
267$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS)
268$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS)
269$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
270$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS)
271$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS)
272$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS)
273$(OUTPUT)/test_tag: $(TESTING_HELPERS)
274$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS)
275$(OUTPUT)/xdping: $(TESTING_HELPERS)
276$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)
277$(OUTPUT)/test_maps: $(TESTING_HELPERS)
278$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS)
279$(OUTPUT)/xsk.o: $(BPFOBJ)
280
281BPFTOOL ?= $(DEFAULT_BPFTOOL)
282$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
283 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
284 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
285 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \
286 EXTRA_CFLAGS='-g $(OPT_FLAGS)' \
287 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
288 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
289 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
290 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
291
292ifneq ($(CROSS_COMPILE),)
293$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
294 $(BPFOBJ) | $(BUILD_DIR)/bpftool
295 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
296 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \
297 EXTRA_CFLAGS='-g $(OPT_FLAGS)' \
298 OUTPUT=$(BUILD_DIR)/bpftool/ \
299 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \
300 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \
301 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin
302endif
303
304all: docs
305
306docs:
307 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \
308 -f Makefile.docs \
309 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
310
311docs-clean:
312 $(Q)$(MAKE) $(submake_extras) \
313 -f Makefile.docs \
314 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
315
316$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
317 $(APIDIR)/linux/bpf.h \
318 | $(BUILD_DIR)/libbpf
319 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
320 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS)' \
321 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' \
322 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
323
324ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
325$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
326 $(APIDIR)/linux/bpf.h \
327 | $(HOST_BUILD_DIR)/libbpf
328 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
329 EXTRA_CFLAGS='-g $(OPT_FLAGS)' ARCH= CROSS_COMPILE= \
330 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
331 CC="$(HOSTCC)" LD="$(HOSTLD)" \
332 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
333endif
334
335$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
336ifeq ($(VMLINUX_H),)
337 $(call msg,GEN,,$@)
338 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
339else
340 $(call msg,CP,,$@)
341 $(Q)cp "$(VMLINUX_H)" $@
342endif
343
344$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
345 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
346 $(TOOLSDIR)/lib/rbtree.c \
347 $(TOOLSDIR)/lib/zalloc.c \
348 $(TOOLSDIR)/lib/string.c \
349 $(TOOLSDIR)/lib/ctype.c \
350 $(TOOLSDIR)/lib/str_error_r.c
351 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
352 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \
353 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
354 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
355
356# Get Clang's default includes on this system, as opposed to those seen by
357# '--target=bpf'. This fixes "missing" files on some architectures/distros,
358# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
359#
360# Use '-idirafter': Don't interfere with include mechanics except where the
361# build would have failed anyways.
362define get_sys_includes
363$(shell $(1) $(2) -v -E - </dev/null 2>&1 \
364 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
365$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \
366$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}')
367endef
368
369# Determine target endianness.
370IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
371 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
372MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
373
374ifneq ($(CROSS_COMPILE),)
375CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%))
376endif
377
378CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH))
379BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
380 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
381 -I$(abspath $(OUTPUT)/../usr/include)
382
383CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
384 -Wno-compare-distinct-pointer-types
385
386$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
387$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
388
389$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
390$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h
391
392# Build BPF object using Clang
393# $1 - input .c file
394# $2 - output .o file
395# $3 - CFLAGS
396define CLANG_BPF_BUILD_RULE
397 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
398 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v3 -o $2
399endef
400# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
401define CLANG_NOALU32_BPF_BUILD_RULE
402 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
403 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v2 -o $2
404endef
405# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4
406define CLANG_CPUV4_BPF_BUILD_RULE
407 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
408 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v4 -o $2
409endef
410# Build BPF object using GCC
411define GCC_BPF_BUILD_RULE
412 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
413 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
414endef
415
416SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
417
418LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
419 linked_vars.skel.h linked_maps.skel.h \
420 test_subskeleton.skel.h test_subskeleton_lib.skel.h \
421 test_usdt.skel.h
422
423LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \
424 trace_printk.c trace_vprintk.c map_ptr_kern.c \
425 core_kern.c core_kern_overflow.c test_ringbuf.c \
426 test_ringbuf_map_key.c
427
428# Generate both light skeleton and libbpf skeleton for these
429LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \
430 kfunc_call_test_subprog.c
431SKEL_BLACKLIST += $$(LSKELS)
432
433test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o
434linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o
435linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o
436linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o
437# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file
438# but that's created as a side-effect of the skel.h generation.
439test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o
440test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o
441test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o
442xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o
443xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o
444xdp_features.skel.h-deps := xdp_features.bpf.o
445
446LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps)))
447
448# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
449# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
450# Parameters:
451# $1 - test runner base binary name (e.g., test_progs)
452# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, gcc-bpf, etc)
453define DEFINE_TEST_RUNNER
454
455TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
456TRUNNER_BINARY := $1$(if $2,-)$2
457TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
458 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
459TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
460 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
461TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
462TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
463TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
464TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS))
465TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
466 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
467 $$(TRUNNER_BPF_SRCS)))
468TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
469TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
470TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
471
472# Evaluate rules now with extra TRUNNER_XXX variables above already defined
473$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
474
475endef
476
477# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
478# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
479# $1 - test runner base binary name (e.g., test_progs)
480# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, gcc-bpf, etc)
481define DEFINE_TEST_RUNNER_RULES
482
483ifeq ($($(TRUNNER_OUTPUT)-dir),)
484$(TRUNNER_OUTPUT)-dir := y
485$(TRUNNER_OUTPUT):
486 $$(call msg,MKDIR,,$$@)
487 $(Q)mkdir -p $$@
488endif
489
490# ensure we set up BPF objects generation rule just once for a given
491# input/output directory combination
492ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
493$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
494$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \
495 $(TRUNNER_BPF_PROGS_DIR)/%.c \
496 $(TRUNNER_BPF_PROGS_DIR)/*.h \
497 $$(INCLUDE_DIR)/vmlinux.h \
498 $(wildcard $(BPFDIR)/bpf_*.h) \
499 $(wildcard $(BPFDIR)/*.bpf.h) \
500 | $(TRUNNER_OUTPUT) $$(BPFOBJ)
501 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
502 $(TRUNNER_BPF_CFLAGS))
503
504$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
505 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
506 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
507 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
508 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
509 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
510 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@
511 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h)
512
513$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
514 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
515 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$<
516 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o)
517 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o)
518 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
519 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@
520
521$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT)
522 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o))
523 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps))
524 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o)
525 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o)
526 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
527 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
528 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@
529 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h)
530endif
531
532# ensure we set up tests.h header generation rule just once
533ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
534$(TRUNNER_TESTS_DIR)-tests-hdr := y
535$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
536 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
537 $$(shell (echo '/* Generated header, do not edit */'; \
538 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \
539 $(TRUNNER_TESTS_DIR)/*.c | sort ; \
540 ) > $$@)
541endif
542
543# compile individual test files
544# Note: we cd into output directory to ensure embedded BPF object is found
545$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
546 $(TRUNNER_TESTS_DIR)/%.c \
547 $(TRUNNER_EXTRA_HDRS) \
548 $(TRUNNER_BPF_OBJS) \
549 $(TRUNNER_BPF_SKELS) \
550 $(TRUNNER_BPF_LSKELS) \
551 $(TRUNNER_BPF_SKELS_LINKED) \
552 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
553 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
554 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
555
556$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
557 %.c \
558 $(TRUNNER_EXTRA_HDRS) \
559 $(TRUNNER_TESTS_HDR) \
560 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
561 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
562 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
563
564# non-flavored in-srctree builds receive special treatment, in particular, we
565# do not need to copy extra resources (see e.g. test_btf_dump_case())
566$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
567ifneq ($2:$(OUTPUT),:$(shell pwd))
568 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
569 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
570endif
571
572$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
573 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
574 $(RESOLVE_BTFIDS) \
575 $(TRUNNER_BPFTOOL) \
576 | $(TRUNNER_BINARY)-extras
577 $$(call msg,BINARY,,$$@)
578 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
579 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@
580 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \
581 $(OUTPUT)/$(if $2,$2/)bpftool
582
583endef
584
585# Define test_progs test runner.
586TRUNNER_TESTS_DIR := prog_tests
587TRUNNER_BPF_PROGS_DIR := progs
588TRUNNER_EXTRA_SOURCES := test_progs.c \
589 cgroup_helpers.c \
590 trace_helpers.c \
591 network_helpers.c \
592 testing_helpers.c \
593 btf_helpers.c \
594 cap_helpers.c \
595 unpriv_helpers.c \
596 netlink_helpers.c \
597 test_loader.c \
598 xsk.c \
599 disasm.c \
600 json_writer.c \
601 flow_dissector_load.h \
602 ip_check_defrag_frags.h
603TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \
604 $(OUTPUT)/liburandom_read.so \
605 $(OUTPUT)/xdp_synproxy \
606 $(OUTPUT)/sign-file \
607 $(OUTPUT)/uprobe_multi \
608 ima_setup.sh \
609 verify_sig_setup.sh \
610 $(wildcard progs/btf_dump_test_case_*.c) \
611 $(wildcard progs/*.bpf.o)
612TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
613TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
614$(eval $(call DEFINE_TEST_RUNNER,test_progs))
615
616# Define test_progs-no_alu32 test runner.
617TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
618TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
619$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
620
621# Define test_progs-cpuv4 test runner.
622ifneq ($(CLANG_CPUV4),)
623TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE
624TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
625$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4))
626endif
627
628# Define test_progs BPF-GCC-flavored test runner.
629ifneq ($(BPF_GCC),)
630TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
631TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,)
632$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
633endif
634
635# Define test_maps test runner.
636TRUNNER_TESTS_DIR := map_tests
637TRUNNER_BPF_PROGS_DIR := progs
638TRUNNER_EXTRA_SOURCES := test_maps.c
639TRUNNER_EXTRA_FILES :=
640TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
641TRUNNER_BPF_CFLAGS :=
642$(eval $(call DEFINE_TEST_RUNNER,test_maps))
643
644# Define test_verifier test runner.
645# It is much simpler than test_maps/test_progs and sufficiently different from
646# them (e.g., test.h is using completely pattern), that it's worth just
647# explicitly defining all the rules explicitly.
648verifier/tests.h: verifier/*.c
649 $(shell ( cd verifier/; \
650 echo '/* Generated header, do not edit */'; \
651 echo '#ifdef FILL_ARRAY'; \
652 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
653 echo '#endif' \
654 ) > verifier/tests.h)
655$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
656 $(call msg,BINARY,,$@)
657 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
658
659# Include find_bit.c to compile xskxceiver.
660EXTRA_SRC := $(TOOLSDIR)/lib/find_bit.c
661$(OUTPUT)/xskxceiver: $(EXTRA_SRC) xskxceiver.c xskxceiver.h $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT)
662 $(call msg,BINARY,,$@)
663 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
664
665$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT)
666 $(call msg,BINARY,,$@)
667 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
668
669$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT)
670 $(call msg,BINARY,,$@)
671 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
672
673# Make sure we are able to include and link libbpf against c++.
674$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
675 $(call msg,CXX,,$@)
676 $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
677
678# Benchmark runner
679$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
680 $(call msg,CC,,$@)
681 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
682$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
683$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
684$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
685 $(OUTPUT)/perfbuf_bench.skel.h
686$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
687$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h
688$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h
689$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h
690$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h
691$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h
692$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h
693$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h
694$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h
695$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
696$(OUTPUT)/bench: LDLIBS += -lm
697$(OUTPUT)/bench: $(OUTPUT)/bench.o \
698 $(TESTING_HELPERS) \
699 $(TRACE_HELPERS) \
700 $(CGROUP_HELPERS) \
701 $(OUTPUT)/bench_count.o \
702 $(OUTPUT)/bench_rename.o \
703 $(OUTPUT)/bench_trigger.o \
704 $(OUTPUT)/bench_ringbufs.o \
705 $(OUTPUT)/bench_bloom_filter_map.o \
706 $(OUTPUT)/bench_bpf_loop.o \
707 $(OUTPUT)/bench_strncmp.o \
708 $(OUTPUT)/bench_bpf_hashmap_full_update.o \
709 $(OUTPUT)/bench_local_storage.o \
710 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \
711 $(OUTPUT)/bench_bpf_hashmap_lookup.o \
712 $(OUTPUT)/bench_local_storage_create.o \
713 $(OUTPUT)/bench_htab_mem.o \
714 #
715 $(call msg,BINARY,,$@)
716 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
717
718$(OUTPUT)/veristat.o: $(BPFOBJ)
719$(OUTPUT)/veristat: $(OUTPUT)/veristat.o
720 $(call msg,BINARY,,$@)
721 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
722
723$(OUTPUT)/uprobe_multi: uprobe_multi.c
724 $(call msg,BINARY,,$@)
725 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
726
727EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
728 prog_tests/tests.h map_tests/tests.h verifier/tests.h \
729 feature bpftool \
730 $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h \
731 no_alu32 cpuv4 bpf_gcc bpf_testmod.ko \
732 liburandom_read.so)
733
734.PHONY: docs docs-clean
735
736# Delete partially updated (corrupted) files on error
737.DELETE_ON_ERROR:
738
739DEFAULT_INSTALL_RULE := $(INSTALL_RULE)
740override define INSTALL_RULE
741 $(DEFAULT_INSTALL_RULE)
742 @for DIR in $(TEST_INST_SUBDIRS); do \
743 mkdir -p $(INSTALL_PATH)/$$DIR; \
744 rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\
745 done
746endef