1 # SPDX-License-Identifier: GPL-2.0
2 include ../../../build/Build.include
3 include ../../../scripts/Makefile.arch
4 include ../../../scripts/Makefile.include
5
6 CXX ?= $(CROSS_COMPILE)g++
7
8 CURDIR := $(abspath .)
9 TOOLSDIR := $(abspath ../../..)
10 LIBDIR := $(TOOLSDIR)/lib
11 BPFDIR := $(LIBDIR)/bpf
12 TOOLSINCDIR := $(TOOLSDIR)/include
13 BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
14 APIDIR := $(TOOLSINCDIR)/uapi
15 ifneq ($(O),)
16 GENDIR := $(O)/include/generated
17 else
18 GENDIR := $(abspath ../../../../include/genera
19 endif
20 GENHDR := $(GENDIR)/autoconf.h
21 PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
22
23 ifneq ($(wildcard $(GENHDR)),)
24 GENFLAGS := -DHAVE_GENHDR
25 endif
26
27 BPF_GCC ?= $(shell command -v bpf-gcc;
28 SAN_CFLAGS ?=
29 SAN_LDFLAGS ?= $(SAN_CFLAGS)
30 RELEASE ?=
31 OPT_FLAGS ?= $(if $(RELEASE),-O2,-O0)
32
33 LIBELF_CFLAGS := $(shell $(PKG_CONFIG) libel
34 LIBELF_LIBS := $(shell $(PKG_CONFIG) libel
35
36 ifeq ($(srctree),)
37 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
38 srctree := $(patsubst %/,%,$(dir $(srctree)))
39 srctree := $(patsubst %/,%,$(dir $(srctree)))
40 srctree := $(patsubst %/,%,$(dir $(srctree)))
41 endif
42
43 CFLAGS += -g $(OPT_FLAGS) -rdynamic
44 -Wall -Werror -fno-omit-frame-pointe
45 $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_C
46 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GEN
47 -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUT
48 LDFLAGS += $(SAN_LDFLAGS)
49 LDLIBS += $(LIBELF_LIBS) -lz -lrt -lpthread
50
51 PCAP_CFLAGS := $(shell $(PKG_CONFIG) --cfl
52 PCAP_LIBS := $(shell $(PKG_CONFIG) --lib
53 LDLIBS += $(PCAP_LIBS)
54 CFLAGS += $(PCAP_CFLAGS)
55
56 # The following tests perform type punning and
57 # aliasing rules, which are exploited by both
58 # while optimizing. This can lead to broken p
59 progs/bind4_prog.c-CFLAGS := -fno-strict-alias
60 progs/bind6_prog.c-CFLAGS := -fno-strict-alias
61 progs/dynptr_fail.c-CFLAGS := -fno-strict-alia
62 progs/linked_list_fail.c-CFLAGS := -fno-strict
63 progs/map_kptr_fail.c-CFLAGS := -fno-strict-al
64 progs/syscall.c-CFLAGS := -fno-strict-aliasing
65 progs/test_pkt_md_access.c-CFLAGS := -fno-stri
66 progs/test_sk_lookup.c-CFLAGS := -fno-strict-a
67 progs/timer_crash.c-CFLAGS := -fno-strict-alia
68 progs/test_global_func9.c-CFLAGS := -fno-stric
69 progs/verifier_nocsr.c-CFLAGS := -fno-strict-a
70
71 # Some utility functions use LLVM libraries
72 jit_disasm_helpers.c-CFLAGS = $(LLVM_CFLAGS)
73
74 ifneq ($(LLVM),)
75 # Silence some warnings when compiled with cla
76 CFLAGS += -Wno-unused-command-line-argument
77 endif
78
79 # Check whether bpf cpu=v4 is supported or not
80 ifneq ($(shell $(CLANG) --target=bpf -mcpu=hel
81 CLANG_CPUV4 := 1
82 endif
83
84 # Order correspond to 'make run_tests' order
85 TEST_GEN_PROGS = test_verifier test_tag test_m
86 test_sock test_sockmap \
87 test_tcpnotify_user test_sysctl \
88 test_progs-no_alu32
89 TEST_INST_SUBDIRS := no_alu32
90
91 # Also test bpf-gcc, if present
92 ifneq ($(BPF_GCC),)
93 TEST_GEN_PROGS += test_progs-bpf_gcc
94 TEST_INST_SUBDIRS += bpf_gcc
95
96 # The following tests contain C code that, alt
97 # triggers GCC warnings that cannot be disable
98 # anonymous struct types in function parameter
99 progs/btf_dump_test_case_bitfields.c-bpf_gcc-C
100 progs/btf_dump_test_case_namespacing.c-bpf_gcc
101 progs/btf_dump_test_case_packing.c-bpf_gcc-CFL
102 progs/btf_dump_test_case_padding.c-bpf_gcc-CFL
103 progs/btf_dump_test_case_syntax.c-bpf_gcc-CFLA
104
105 # The following tests do type-punning, via the
106 # `struct bpf_insn' to long and then uses the
107 # "is used uninitialized" warning in GCC due t
108 # rules.
109 progs/verifier_ref_tracking.c-bpf_gcc-CFLAGS :
110 progs/verifier_unpriv.c-bpf_gcc-CFLAGS := -fno
111 progs/verifier_cgroup_storage.c-bpf_gcc-CFLAGS
112 progs/verifier_ld_ind.c-bpf_gcc-CFLAGS := -fno
113 progs/verifier_map_ret_val.c-bpf_gcc-CFLAGS :=
114 progs/verifier_spill_fill.c-bpf_gcc-CFLAGS :=
115 progs/verifier_subprog_precision.c-bpf_gcc-CFL
116 progs/verifier_uninit.c-bpf_gcc-CFLAGS := -fno
117 endif
118
119 ifneq ($(CLANG_CPUV4),)
120 TEST_GEN_PROGS += test_progs-cpuv4
121 TEST_INST_SUBDIRS += cpuv4
122 endif
123
124 TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_
125 TEST_FILES = xsk_prereqs.sh $(wildcard progs/b
126
127 # Order correspond to 'make run_tests' order
128 TEST_PROGS := test_kmod.sh \
129 test_xdp_redirect.sh \
130 test_xdp_redirect_multi.sh \
131 test_xdp_meta.sh \
132 test_tunnel.sh \
133 test_lwt_seg6local.sh \
134 test_lirc_mode2.sh \
135 test_skb_cgroup_id.sh \
136 test_flow_dissector.sh \
137 test_xdp_vlan_mode_generic.sh \
138 test_xdp_vlan_mode_native.sh \
139 test_lwt_ip_encap.sh \
140 test_tcp_check_syncookie.sh \
141 test_tc_tunnel.sh \
142 test_tc_edt.sh \
143 test_xdping.sh \
144 test_bpftool_build.sh \
145 test_bpftool.sh \
146 test_bpftool_metadata.sh \
147 test_doc_build.sh \
148 test_xsk.sh \
149 test_xdp_features.sh
150
151 TEST_PROGS_EXTENDED := with_addr.sh \
152 with_tunnels.sh ima_setup.sh verify_si
153 test_xdp_vlan.sh test_bpftool.py
154
155 # Compile but not part of 'make run_tests'
156 TEST_GEN_PROGS_EXTENDED = \
157 flow_dissector_load test_flow_dissecto
158 test_lirc_mode2_user xdping test_cpp r
159 xskxceiver xdp_redirect_multi xdp_synp
160 xdp_features bpf_test_no_cfi.ko bpf_te
161 bpf_test_modorder_y.ko
162
163 TEST_GEN_FILES += liburandom_read.so urandom_r
164
165 ifneq ($(V),1)
166 submake_extras := feature_display=0
167 endif
168
169 # override lib.mk's default rules
170 OVERRIDE_TARGETS := 1
171 override define CLEAN
172 $(call msg,CLEAN)
173 $(Q)$(RM) -r $(TEST_GEN_PROGS)
174 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED
175 $(Q)$(RM) -r $(TEST_GEN_FILES)
176 $(Q)$(RM) -r $(EXTRA_CLEAN)
177 $(Q)$(MAKE) -C bpf_testmod clean
178 $(Q)$(MAKE) docs-clean
179 endef
180
181 include ../lib.mk
182
183 NON_CHECK_FEAT_TARGETS := clean docs-clean
184 CHECK_FEAT := $(filter-out $(NON_CHECK_FEAT_TA
185 ifneq ($(CHECK_FEAT),)
186 FEATURE_USER := .selftests
187 FEATURE_TESTS := llvm
188 FEATURE_DISPLAY := $(FEATURE_TESTS)
189
190 # Makefile.feature expects OUTPUT to end with
191 ifeq ($(shell expr $(MAKE_VERSION) \>= 4.4), 1
192 $(let OUTPUT,$(OUTPUT)/,\
193 $(eval include ../../../build/Makefile
194 else
195 OUTPUT := $(OUTPUT)/
196 $(eval include ../../../build/Makefile.feature
197 OUTPUT := $(patsubst %/,%,$(OUTPUT))
198 endif
199 endif
200
201 ifeq ($(feature-llvm),1)
202 LLVM_CFLAGS += -DHAVE_LLVM_SUPPORT
203 LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler
204 # both llvm-config and lib.mk add -D_GNU_SOU
205 LLVM_CFLAGS += $(filter-out -D_GNU_SOURCE,$
206 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --lin
207 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --lin
208 LLVM_LDLIBS += -lstdc++
209 LLVM_LDFLAGS += $(shell $(LLVM_CONFIG) --ldf
210 endif
211
212 SCRATCH_DIR := $(OUTPUT)/tools
213 BUILD_DIR := $(SCRATCH_DIR)/build
214 INCLUDE_DIR := $(SCRATCH_DIR)/include
215 BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
216 ifneq ($(CROSS_COMPILE),)
217 HOST_BUILD_DIR := $(BUILD_DIR)/host
218 HOST_SCRATCH_DIR := $(OUTPUT)/host-tool
219 HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)
220 else
221 HOST_BUILD_DIR := $(BUILD_DIR)
222 HOST_SCRATCH_DIR := $(SCRATCH_DIR)
223 HOST_INCLUDE_DIR := $(INCLUDE_DIR)
224 endif
225 HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf
226 RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_bt
227 RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
228
229 VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)
230 $(if $(KBUILD_OUTPUT),$(K
231 ../../../../vmlinux
232 /sys/kernel/btf/vmlinux
233 /boot/vmlinux-$(shell una
234 VMLINUX_BTF ?= $(abspath $(firstword $(wildcar
235 ifeq ($(VMLINUX_BTF),)
236 $(error Cannot find a vmlinux for VMLINUX_BTF
237 endif
238
239 # Define simple and short `make test_progs`, `
240 # to build individual tests.
241 # NOTE: Semicolon at the end is critical to ov
242 # rule for binaries.
243 $(notdir $(TEST_GEN_PROGS)
244 $(TEST_GEN_PROGS_EXTENDED)): %: $(OUT
245
246 # sort removes libbpf duplicates when not cros
247 MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST
248 $(BUILD_DIR)/bpftool $(HOST_BUI
249 $(HOST_BUILD_DIR)/resolve_btfid
250 $(RUNQSLOWER_OUTPUT) $(INCLUDE_
251 $(MAKE_DIRS):
252 $(call msg,MKDIR,,$@)
253 $(Q)mkdir -p $@
254
255 $(OUTPUT)/%.o: %.c
256 $(call msg,CC,,$@)
257 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^
258
259 $(OUTPUT)/%:%.c
260 $(call msg,BINARY,,$@)
261 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
262
263 # LLVM's ld.lld doesn't support all the archit
264 ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv
265 LLD := lld
266 else
267 LLD := $(shell command -v $(LD))
268 endif
269
270 # Filter out -static for liburandom_read.so an
271 # do not fail. Static builds leave urandom_rea
272 $(OUTPUT)/liburandom_read.so: urandom_read_lib
273 $(call msg,LIB,,$@)
274 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \
275 $(filter-out -static,$(CF
276 $(filter %.c,$^) $(filter
277 -fuse-ld=$(LLD) -Wl,-znos
278 -Wl,--version-script=libu
279 -fPIC -shared -o $@
280
281 $(OUTPUT)/urandom_read: urandom_read.c urandom
282 $(call msg,BINARY,,$@)
283 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \
284 $(filter-out -static,$(CF
285 -lurandom_read $(filter-o
286 -fuse-ld=$(LLD) -Wl,-znos
287 -Wl,-rpath=. -o $@
288
289 $(OUTPUT)/sign-file: ../../../../scripts/sign-
290 $(call msg,SIGN-FILE,,$@)
291 $(Q)$(CC) $(shell $(PKG_CONFIG) --cfla
292 $< -o $@ \
293 $(shell $(PKG_CONFIG) --libs
294
295 $(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(RES
296 $(call msg,MOD,,$@)
297 $(Q)$(RM) bpf_testmod/bpf_testmod.ko #
298 $(Q)$(MAKE) $(submake_extras) RESOLVE_
299 $(Q)cp bpf_testmod/bpf_testmod.ko $@
300
301 $(OUTPUT)/bpf_test_no_cfi.ko: $(VMLINUX_BTF) $
302 $(call msg,MOD,,$@)
303 $(Q)$(RM) bpf_test_no_cfi/bpf_test_no_
304 $(Q)$(MAKE) $(submake_extras) RESOLVE_
305 $(Q)cp bpf_test_no_cfi/bpf_test_no_cfi
306
307 $(OUTPUT)/bpf_test_modorder_x.ko: $(VMLINUX_BT
308 $(call msg,MOD,,$@)
309 $(Q)$(RM) bpf_test_modorder_x/bpf_test
310 $(Q)$(MAKE) $(submake_extras) RESOLVE_
311 $(Q)cp bpf_test_modorder_x/bpf_test_mo
312
313 $(OUTPUT)/bpf_test_modorder_y.ko: $(VMLINUX_BT
314 $(call msg,MOD,,$@)
315 $(Q)$(RM) bpf_test_modorder_y/bpf_test
316 $(Q)$(MAKE) $(submake_extras) RESOLVE_
317 $(Q)cp bpf_test_modorder_y/bpf_test_mo
318
319
320 DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bp
321 ifneq ($(CROSS_COMPILE),)
322 CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool
323 TRUNNER_BPFTOOL := $(CROSS_BPFTOOL)
324 USE_BOOTSTRAP := ""
325 else
326 TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL)
327 USE_BOOTSTRAP := "bootstrap/"
328 endif
329
330 $(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BP
331 $(Q)$(MAKE) $(submake_extras) -C $(TOO
332 OUTPUT=$(RUNQSLOWER_OUTPUT
333 BPFTOOL_OUTPUT=$(HOST_BUIL
334 BPFOBJ_OUTPUT=$(BUILD_DIR)
335 BPFOBJ=$(BPFOBJ) BPF_INCLU
336 EXTRA_CFLAGS='-g $(OPT_FLA
337 EXTRA_LDFLAGS='$(SAN_LDFLA
338 cp $(RUNQSLOWER_OUTPUT)run
339
340 TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL)
341
342 $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED):
343
344 TESTING_HELPERS := $(OUTPUT)/testing_helpers.o
345 CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o
346 UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o
347 TRACE_HELPERS := $(OUTPUT)/trace_helpers.o
348 JSON_WRITER := $(OUTPUT)/json_writ
349 CAP_HELPERS := $(OUTPUT)/cap_helpers.o
350 NETWORK_HELPERS := $(OUTPUT)/network_helpers.o
351
352 $(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTI
353 $(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TE
354 $(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPER
355 $(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS)
356 $(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TES
357 $(OUTPUT)/test_tag: $(TESTING_HELPERS)
358 $(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELP
359 $(OUTPUT)/xdping: $(TESTING_HELPERS)
360 $(OUTPUT)/flow_dissector_load: $(TESTING_HELPE
361 $(OUTPUT)/test_maps: $(TESTING_HELPERS)
362 $(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(
363 $(OUTPUT)/xsk.o: $(BPFOBJ)
364 $(OUTPUT)/test_tcp_check_syncookie_user: $(NET
365
366 BPFTOOL ?= $(DEFAULT_BPFTOOL)
367 $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*
368 $(HOST_BPFOBJ) | $(HOST_BU
369 $(Q)$(MAKE) $(submake_extras) -C $(BP
370 ARCH= CROSS_COMPILE= CC="$
371 EXTRA_CFLAGS='-g $(OPT_FLA
372 OUTPUT=$(HOST_BUILD_DIR)/b
373 LIBBPF_OUTPUT=$(HOST_BUILD
374 LIBBPF_DESTDIR=$(HOST_SCRA
375 prefix= DESTDIR=$(HOST_SCR
376
377 ifneq ($(CROSS_COMPILE),)
378 $(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[
379 $(BPFOBJ) | $(BUILD_DIR)/b
380 $(Q)$(MAKE) $(submake_extras) -C $(BP
381 ARCH=$(ARCH) CROSS_COMPILE
382 EXTRA_CFLAGS='-g $(OPT_FLA
383 OUTPUT=$(BUILD_DIR)/bpftoo
384 LIBBPF_OUTPUT=$(BUILD_DIR)
385 LIBBPF_DESTDIR=$(SCRATCH_D
386 prefix= DESTDIR=$(SCRATCH_
387 endif
388
389 all: docs
390
391 docs:
392 $(Q)RST2MAN_OPTS="--exit-status=1" $(M
393 -f Makefile.docs
394 prefix= OUTPUT=$(OUTPUT)/
395
396 docs-clean:
397 $(Q)$(MAKE) $(submake_extras)
398 -f Makefile.docs
399 prefix= OUTPUT=$(OUTPUT)/
400
401 $(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDI
402 $(APIDIR)/linux/bpf.h
403 | $(BUILD_DIR)/libbpf
404 $(Q)$(MAKE) $(submake_extras) -C $(BPF
405 EXTRA_CFLAGS='-g $(OPT_FLA
406 EXTRA_LDFLAGS='$(SAN_LDFLA
407 DESTDIR=$(SCRATCH_DIR) pre
408
409 ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
410 $(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(
411 $(APIDIR)/linux/bpf.h
412 | $(HOST_BUILD_DIR)/libbpf
413 $(Q)$(MAKE) $(submake_extras) -C $(BPF
414 EXTRA_CFLAGS='-g $(OPT_FLA
415 OUTPUT=$(HOST_BUILD_DIR)/l
416 CC="$(HOSTCC)" LD="$(HOSTL
417 DESTDIR=$(HOST_SCRATCH_DIR
418 endif
419
420 # vmlinux.h is first dumped to a temprorary fi
421 # the previous version. This helps to avoid un
422 # $(TRUNNER_BPF_OBJS)
423 $(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPF
424 ifeq ($(VMLINUX_H),)
425 $(call msg,GEN,,$@)
426 $(Q)$(BPFTOOL) btf dump file $(VMLINUX
427 $(Q)cmp -s $(INCLUDE_DIR)/.vmlinux.h.t
428 else
429 $(call msg,CP,,$@)
430 $(Q)cp "$(VMLINUX_H)" $@
431 endif
432
433 $(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUI
434 $(TOOLSDIR)/bpf/resolve
435 $(TOOLSDIR)/lib/rbtree.
436 $(TOOLSDIR)/lib/zalloc.
437 $(TOOLSDIR)/lib/string.
438 $(TOOLSDIR)/lib/ctype.c
439 $(TOOLSDIR)/lib/str_err
440 $(Q)$(MAKE) $(submake_extras) -C $(TOO
441 CC="$(HOSTCC)" LD="$(HOSTLD)"
442 LIBBPF_INCLUDE=$(HOST_INCLUDE_
443 OUTPUT=$(HOST_BUILD_DIR)/resol
444
445 # Get Clang's default includes on this system,
446 # '--target=bpf'. This fixes "missing" files o
447 # such as asm/byteorder.h, asm/socket.h, asm/s
448 #
449 # Use '-idirafter': Don't interfere with inclu
450 # build would have failed anyways.
451 define get_sys_includes
452 $(shell $(1) $(2) -v -E - </dev/null 2>&1 \
453 | sed -n '/<...> search starts here:/,
454 $(shell $(1) $(2) -dM -E - </dev/null | grep '
455 $(shell $(1) $(2) -dM -E - </dev/null | grep '
456 $(shell $(1) $(2) -dM -E - </dev/null | grep -
457 endef
458
459 # Determine target endianness.
460 IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </de
461 grep 'define __BYTE_OR
462 MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endi
463
464 ifneq ($(CROSS_COMPILE),)
465 CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_
466 endif
467
468 CLANG_SYS_INCLUDES = $(call get_sys_includes,$
469 BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_
470 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(
471 -I$(abspath $(OUTPUT)/../usr/incl
472 -Wno-compare-distinct-pointer-typ
473 # TODO: enable me -Wsign-compare
474
475 CLANG_CFLAGS = $(CLANG_SYS_INCLUDES)
476
477 $(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS +=
478 $(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -
479
480 $(OUTPUT)/flow_dissector_load.o: flow_dissecto
481 $(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup
482
483 # Build BPF object using Clang
484 # $1 - input .c file
485 # $2 - output .o file
486 # $3 - CFLAGS
487 # $4 - binary name
488 define CLANG_BPF_BUILD_RULE
489 $(call msg,CLNG-BPF,$4,$2)
490 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1
491 endef
492 # Similar to CLANG_BPF_BUILD_RULE, but with di
493 define CLANG_NOALU32_BPF_BUILD_RULE
494 $(call msg,CLNG-BPF,$4,$2)
495 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1
496 endef
497 # Similar to CLANG_BPF_BUILD_RULE, but with cp
498 define CLANG_CPUV4_BPF_BUILD_RULE
499 $(call msg,CLNG-BPF,$4,$2)
500 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1
501 endef
502 # Build BPF object using GCC
503 define GCC_BPF_BUILD_RULE
504 $(call msg,GCC-BPF,$4,$2)
505 $(Q)$(BPF_GCC) $3 -DBPF_NO_PRESERVE_AC
506 endef
507
508 SKEL_BLACKLIST := btf__% test_pinning_invalid.
509
510 LINKED_SKELS := test_static_linked.skel.h link
511 linked_vars.skel.h linked_maps
512 test_subskeleton.skel.h test_s
513 test_usdt.skel.h
514
515 LSKELS := fentry_test.c fexit_test.c fexit_sle
516 trace_printk.c trace_vprintk.c map_ptr
517 core_kern.c core_kern_overflow.c test_
518 test_ringbuf_n.c test_ringbuf_map_key.
519
520 # Generate both light skeleton and libbpf skel
521 LSKELS_EXTRA := test_ksyms_module.c test_ksyms
522 kfunc_call_test_subprog.c
523 SKEL_BLACKLIST += $$(LSKELS)
524
525 test_static_linked.skel.h-deps := test_static_
526 linked_funcs.skel.h-deps := linked_funcs1.bpf.
527 linked_vars.skel.h-deps := linked_vars1.bpf.o
528 linked_maps.skel.h-deps := linked_maps1.bpf.o
529 # In the subskeleton case, we want the test_su
530 # but that's created as a side-effect of the s
531 test_subskeleton.skel.h-deps := test_subskelet
532 test_subskeleton_lib.skel.h-deps := test_subsk
533 test_usdt.skel.h-deps := test_usdt.bpf.o test_
534 xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf
535 xdp_hw_metadata.skel.h-deps := xdp_hw_metadata
536 xdp_features.skel.h-deps := xdp_features.bpf.o
537
538 LINKED_BPF_OBJS := $(foreach skel,$(LINKED_SKE
539 LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(LI
540
541 HEADERS_FOR_BPF_OBJS := $(wildcard $(BPFDIR)/*
542 $(addprefix $(BPFDIR)/
543
544
545
546
547 # Set up extra TRUNNER_XXX "temporary" variabl
548 # $eval()) and pass control to DEFINE_TEST_RUN
549 # Parameters:
550 # $1 - test runner base binary name (e.g., tes
551 # $2 - test runner extra "flavor" (e.g., no_al
552 define DEFINE_TEST_RUNNER
553
554 TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
555 TRUNNER_BINARY := $1$(if $2,-)$2
556 TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNE
557 $$(notdir $$(
558 TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNN
559 $$(filter %.c
560 TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_
561 TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/test
562 TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TR
563 TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER
564 TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNE
565 $$(filter-out
566
567 TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNN
568 TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TR
569 TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
570
571 # Evaluate rules now with extra TRUNNER_XXX va
572 $$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2
573
574 endef
575
576 # Using TRUNNER_XXX variables, provided by cal
577 # set up by DEFINE_TEST_RUNNER itself, create
578 # $1 - test runner base binary name (e.g., tes
579 # $2 - test runner extra "flavor" (e.g., no_al
580 define DEFINE_TEST_RUNNER_RULES
581
582 ifeq ($($(TRUNNER_OUTPUT)-dir),)
583 $(TRUNNER_OUTPUT)-dir := y
584 $(TRUNNER_OUTPUT):
585 $$(call msg,MKDIR,,$$@)
586 $(Q)mkdir -p $$@
587 endif
588
589 # ensure we set up BPF objects generation rule
590 # input/output directory combination
591 ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-b
592 $(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs :
593 $(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o
594 $(TRUNNER_BPF_PROGS_DIR)/
595 $(TRUNNER_BPF_PROGS_DIR)/
596 $$(INCLUDE_DIR)/vmlinux.h
597 $(HEADERS_FOR_BPF_OBJS)
598 | $(TRUNNER_OUTPUT) $$(BP
599 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,
600 $(TR
601 $$($
602 $$($
603
604 $(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFT
605 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY)
606 $(Q)$$(BPFTOOL) gen object $$(<:.o=.li
607 $(Q)$$(BPFTOOL) gen object $$(<:.o=.li
608 $(Q)$$(BPFTOOL) gen object $$(<:.o=.li
609 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.
610 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.
611 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.
612 $(Q)rm -f $$(<:.o=.linked1.o) $$(<:.o=
613
614 $(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BP
615 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY)
616 $(Q)$$(BPFTOOL) gen object $$(<:.o=.ll
617 $(Q)$$(BPFTOOL) gen object $$(<:.o=.ll
618 $(Q)$$(BPFTOOL) gen object $$(<:.o=.ll
619 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=
620 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.
621 $(Q)rm -f $$(<:.o=.llinked1.o) $$(<:.o
622
623 $(LINKED_BPF_OBJS): %: $(TRUNNER_OUTPUT)/%
624
625 # .SECONDEXPANSION here allows to correctly ex
626 .SECONDEXPANSION:
627 $(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_OUTPUT)
628 $$(call msg,LINK-BPF,$(TRUNNER_BINARY)
629 $(Q)$$(BPFTOOL) gen object $$(@:.skel.
630 $(Q)$$(BPFTOOL) gen object $$(@:.skel.
631 $(Q)$$(BPFTOOL) gen object $$(@:.skel.
632 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@
633 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY)
634 $(Q)$$(BPFTOOL) gen skeleton $$(@:.ske
635 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.
636 $(Q)rm -f $$(@:.skel.h=.linked1.o) $$(
637
638 # When the compiler generates a %.d file, only
639 # full paths) are specified as prerequisites f
640 # file. This target makes %.skel.h basename de
641 # linking generated %.d dependency with actual
642 $(notdir %.skel.h): $(TRUNNER_OUTPUT)/%.skel.h
643 @true
644
645 endif
646
647 # ensure we set up tests.h header generation r
648 ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
649 $(TRUNNER_TESTS_DIR)-tests-hdr := y
650 $(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
651 $$(call msg,TEST-HDR,$(TRUNNER_BINARY)
652 $$(shell (echo '/* Generated header, d
653 sed -n -E 's/^void (serial_)
654 $(TRUNNER_TESTS_DIR)/*
655 ) > $$@)
656 endif
657
658 # compile individual test files
659 # Note: we cd into output directory to ensure
660 $(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test
661 $(TRUNNER_TESTS_DIR)/%.c
662 | $(TRUNNER_OUTPUT)/%.te
663 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY)
664 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS)
665
666 $(TRUNNER_TEST_OBJS:.o=.d): $(TRUNNER_OUTPUT)/
667 $(TRUNNER_TESTS_DI
668 $(TRUNNER_EXTRA_HD
669 $(TRUNNER_BPF_SKEL
670 $(TRUNNER_BPF_LSKE
671 $(TRUNNER_BPF_SKEL
672 $$(BPFOBJ) | $(TRU
673
674 ifeq ($(filter clean docs-clean,$(MAKECMDGOALS
675 include $(wildcard $(TRUNNER_TEST_OBJS:.o=.d))
676 endif
677
678 # add per extra obj CFGLAGS definitions
679 $(foreach N,$(patsubst $(TRUNNER_OUTPUT)/%.o,%
680 $(eval $(TRUNNER_OUTPUT)/$(N).o: CFLAG
681
682 $(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o:
683 %.c
684 $(TRUNNER_EXTRA_HDRS)
685 $(TRUNNER_TESTS_HDR)
686 $$(BPFOBJ) | $(TRUNNER_
687 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),
688 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS
689
690 # non-flavored in-srctree builds receive speci
691 # do not need to copy extra resources (see e.g
692 $(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILE
693 ifneq ($2:$(OUTPUT),:$(shell pwd))
694 $$(call msg,EXT-COPY,$(TRUNNER_BINARY)
695 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
696 endif
697
698 $(OUTPUT)/$(TRUNNER_BINARY): LDLIBS += $$(LLVM
699 $(OUTPUT)/$(TRUNNER_BINARY): LDFLAGS += $$(LLV
700
701 # some X.test.o files have runtime dependencie
702 $(OUTPUT)/$(TRUNNER_BINARY): | $(TRUNNER_BPF_O
703
704 $(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OB
705 $(TRUNNER_EXTRA_O
706 $(RESOLVE_BTFIDS)
707 $(TRUNNER_BPFTOOL
708 | $(TRUNNER_BINAR
709 $$(call msg,BINARY,,$$@)
710 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.
711 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_
712 $(Q)ln -sf $(if $2,..,.)/tools/build/b
713 $(OUTPUT)/$(if $2,$2/)bpfto
714
715 endef
716
717 # Define test_progs test runner.
718 TRUNNER_TESTS_DIR := prog_tests
719 TRUNNER_BPF_PROGS_DIR := progs
720 TRUNNER_EXTRA_SOURCES := test_progs.c
721 cgroup_helpers.c
722 trace_helpers.c
723 network_helpers.c
724 testing_helpers.c
725 btf_helpers.c
726 cap_helpers.c
727 unpriv_helpers.c
728 netlink_helpers.c
729 jit_disasm_helpers.c
730 test_loader.c
731 xsk.c
732 disasm.c
733 disasm_helpers.c
734 json_writer.c
735 flow_dissector_load.h
736 ip_check_defrag_frags
737 TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read
738 $(OUTPUT)/bpf_test_no_c
739 $(OUTPUT)/bpf_test_modo
740 $(OUTPUT)/bpf_test_modo
741 $(OUTPUT)/liburandom_re
742 $(OUTPUT)/xdp_synproxy
743 $(OUTPUT)/sign-file
744 $(OUTPUT)/uprobe_multi
745 ima_setup.sh
746 verify_sig_setup.sh
747 $(wildcard progs/btf_du
748 $(wildcard progs/*.bpf.
749 TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
750 TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CF
751 $(eval $(call DEFINE_TEST_RUNNER,test_progs))
752
753 # Define test_progs-no_alu32 test runner.
754 TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BU
755 TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CF
756 $(eval $(call DEFINE_TEST_RUNNER,test_progs,no
757
758 # Define test_progs-cpuv4 test runner.
759 ifneq ($(CLANG_CPUV4),)
760 TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUIL
761 TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CF
762 $(eval $(call DEFINE_TEST_RUNNER,test_progs,cp
763 endif
764
765 # Define test_progs BPF-GCC-flavored test runn
766 ifneq ($(BPF_GCC),)
767 TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
768 TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get
769 $(eval $(call DEFINE_TEST_RUNNER,test_progs,bp
770 endif
771
772 # Define test_maps test runner.
773 TRUNNER_TESTS_DIR := map_tests
774 TRUNNER_BPF_PROGS_DIR := progs
775 TRUNNER_EXTRA_SOURCES := test_maps.c
776 TRUNNER_EXTRA_FILES :=
777 TRUNNER_BPF_BUILD_RULE := $$(error no BPF obje
778 TRUNNER_BPF_CFLAGS :=
779 $(eval $(call DEFINE_TEST_RUNNER,test_maps))
780
781 # Define test_verifier test runner.
782 # It is much simpler than test_maps/test_progs
783 # them (e.g., test.h is using completely patte
784 # explicitly defining all the rules explicitly
785 verifier/tests.h: verifier/*.c
786 $(shell ( cd verifier/; \
787 echo '/* Generated header, d
788 echo '#ifdef FILL_ARRAY'; \
789 ls *.c 2> /dev/null | sed -e
790 echo '#endif' \
791 ) > verifier/tests.h)
792 $(OUTPUT)/test_verifier: test_verifier.c verif
793 $(call msg,BINARY,,$@)
794 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %
795
796 # Include find_bit.c to compile xskxceiver.
797 EXTRA_SRC := $(TOOLSDIR)/lib/find_bit.c
798 $(OUTPUT)/xskxceiver: $(EXTRA_SRC) xskxceiver.
799 $(call msg,BINARY,,$@)
800 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %
801
802 $(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $
803 $(call msg,BINARY,,$@)
804 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %
805
806 $(OUTPUT)/xdp_features: xdp_features.c $(OUTPU
807 $(call msg,BINARY,,$@)
808 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %
809
810 # Make sure we are able to include and link li
811 $(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/tes
812 $(call msg,CXX,,$@)
813 $(Q)$(CXX) $(subst -D_GNU_SOURCE=,,$(C
814
815 # Benchmark runner
816 $(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h
817 $(call msg,CC,,$@)
818 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.
819 $(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overh
820 $(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_b
821 $(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_
822 $(OUTPUT)/perfbuf_
823 $(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/
824 $(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop
825 $(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_b
826 $(OUTPUT)/bench_bpf_hashmap_full_update.o: $(O
827 $(OUTPUT)/bench_local_storage.o: $(OUTPUT)/loc
828 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.
829 $(OUTPUT)/bench_local_storage_create.o: $(OUTP
830 $(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT
831 $(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem
832 $(OUTPUT)/bench_bpf_crypto.o: $(OUTPUT)/crypto
833 $(OUTPUT)/bench.o: bench.h testing_helpers.h $
834 $(OUTPUT)/bench: LDLIBS += -lm
835 $(OUTPUT)/bench: $(OUTPUT)/bench.o \
836 $(TESTING_HELPERS) \
837 $(TRACE_HELPERS) \
838 $(CGROUP_HELPERS) \
839 $(OUTPUT)/bench_count.o \
840 $(OUTPUT)/bench_rename.o \
841 $(OUTPUT)/bench_trigger.o \
842 $(OUTPUT)/bench_ringbufs.o \
843 $(OUTPUT)/bench_bloom_filter_
844 $(OUTPUT)/bench_bpf_loop.o \
845 $(OUTPUT)/bench_strncmp.o \
846 $(OUTPUT)/bench_bpf_hashmap_f
847 $(OUTPUT)/bench_local_storage
848 $(OUTPUT)/bench_local_storage
849 $(OUTPUT)/bench_bpf_hashmap_l
850 $(OUTPUT)/bench_local_storage
851 $(OUTPUT)/bench_htab_mem.o \
852 $(OUTPUT)/bench_bpf_crypto.o
853 #
854 $(call msg,BINARY,,$@)
855 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filte
856
857 $(OUTPUT)/veristat.o: $(BPFOBJ)
858 $(OUTPUT)/veristat: $(OUTPUT)/veristat.o
859 $(call msg,BINARY,,$@)
860 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filte
861
862 # Linking uprobe_multi can fail due to relocat
863 $(OUTPUT)/uprobe_multi: CFLAGS += $(if $(filte
864 $(OUTPUT)/uprobe_multi: uprobe_multi.c uprobe_
865 $(call msg,BINARY,,$@)
866 $(Q)$(CC) $(CFLAGS) -Wl,-T,uprobe_mult
867 $(filter-out %.ld,$^) $(LDLIBS
868
869 EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_D
870 prog_tests/tests.h map_tests/tests.h v
871 feature bpftool
872 $(addprefix $(OUTPUT)/,*.o *.d *.skel.
873 no_alu32 cpuv4
874 bpf_test_no_cfi
875 bpf_test_modord
876 bpf_test_modord
877 liburandom_read
878 $(OUTPUT)/FEATURE-DUMP.selftests
879
880 .PHONY: docs docs-clean
881
882 # Delete partially updated (corrupted) files o
883 .DELETE_ON_ERROR:
884
885 DEFAULT_INSTALL_RULE := $(INSTALL_RULE)
886 override define INSTALL_RULE
887 $(DEFAULT_INSTALL_RULE)
888 @for DIR in $(TEST_INST_SUBDIRS); do
889 mkdir -p $(INSTALL_PATH)/$$DIR
890 rsync -a $(OUTPUT)/$$DIR/*.bpf
891 done
892 endef
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