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
21PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
22
23ifneq ($(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)
32
33LIBELF_CFLAGS := $(shell $(PKG_CONFIG) libelf --cflags 2>/dev/null)
34LIBELF_LIBS := $(shell $(PKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
35
36ifeq ($(srctree),)
37srctree := $(patsubst %/,%,$(dir $(CURDIR)))
38srctree := $(patsubst %/,%,$(dir $(srctree)))
39srctree := $(patsubst %/,%,$(dir $(srctree)))
40srctree := $(patsubst %/,%,$(dir $(srctree)))
41endif
42
43CFLAGS += -g $(OPT_FLAGS) -rdynamic \
44 -Wall -Werror -fno-omit-frame-pointer \
45 $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_CFLAGS) \
46 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \
47 -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT)
48LDFLAGS += $(SAN_LDFLAGS)
49LDLIBS += $(LIBELF_LIBS) -lz -lrt -lpthread
50
51PCAP_CFLAGS := $(shell $(PKG_CONFIG) --cflags libpcap 2>/dev/null && echo "-DTRAFFIC_MONITOR=1")
52PCAP_LIBS := $(shell $(PKG_CONFIG) --libs libpcap 2>/dev/null)
53LDLIBS += $(PCAP_LIBS)
54CFLAGS += $(PCAP_CFLAGS)
55
56# The following tests perform type punning and they may break strict
57# aliasing rules, which are exploited by both GCC and clang by default
58# while optimizing. This can lead to broken programs.
59progs/bind4_prog.c-CFLAGS := -fno-strict-aliasing
60progs/bind6_prog.c-CFLAGS := -fno-strict-aliasing
61progs/dynptr_fail.c-CFLAGS := -fno-strict-aliasing
62progs/linked_list_fail.c-CFLAGS := -fno-strict-aliasing
63progs/map_kptr_fail.c-CFLAGS := -fno-strict-aliasing
64progs/syscall.c-CFLAGS := -fno-strict-aliasing
65progs/test_pkt_md_access.c-CFLAGS := -fno-strict-aliasing
66progs/test_sk_lookup.c-CFLAGS := -fno-strict-aliasing
67progs/timer_crash.c-CFLAGS := -fno-strict-aliasing
68progs/test_global_func9.c-CFLAGS := -fno-strict-aliasing
69progs/verifier_nocsr.c-CFLAGS := -fno-strict-aliasing
70
71# Some utility functions use LLVM libraries
72jit_disasm_helpers.c-CFLAGS = $(LLVM_CFLAGS)
73
74ifneq ($(LLVM),)
75# Silence some warnings when compiled with clang
76CFLAGS += -Wno-unused-command-line-argument
77endif
78
79# Check whether bpf cpu=v4 is supported or not by clang
80ifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),)
81CLANG_CPUV4 := 1
82endif
83
84# Order correspond to 'make run_tests' order
85TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
86 test_sock test_sockmap \
87 test_tcpnotify_user test_sysctl \
88 test_progs-no_alu32
89TEST_INST_SUBDIRS := no_alu32
90
91# Also test bpf-gcc, if present
92ifneq ($(BPF_GCC),)
93TEST_GEN_PROGS += test_progs-bpf_gcc
94TEST_INST_SUBDIRS += bpf_gcc
95
96# The following tests contain C code that, although technically legal,
97# triggers GCC warnings that cannot be disabled: declaration of
98# anonymous struct types in function parameter lists.
99progs/btf_dump_test_case_bitfields.c-bpf_gcc-CFLAGS := -Wno-error
100progs/btf_dump_test_case_namespacing.c-bpf_gcc-CFLAGS := -Wno-error
101progs/btf_dump_test_case_packing.c-bpf_gcc-CFLAGS := -Wno-error
102progs/btf_dump_test_case_padding.c-bpf_gcc-CFLAGS := -Wno-error
103progs/btf_dump_test_case_syntax.c-bpf_gcc-CFLAGS := -Wno-error
104
105# The following tests do type-punning, via the __imm_insn macro, from
106# `struct bpf_insn' to long and then uses the value. This triggers an
107# "is used uninitialized" warning in GCC due to strict-aliasing
108# rules.
109progs/verifier_ref_tracking.c-bpf_gcc-CFLAGS := -fno-strict-aliasing
110progs/verifier_unpriv.c-bpf_gcc-CFLAGS := -fno-strict-aliasing
111progs/verifier_cgroup_storage.c-bpf_gcc-CFLAGS := -fno-strict-aliasing
112progs/verifier_ld_ind.c-bpf_gcc-CFLAGS := -fno-strict-aliasing
113progs/verifier_map_ret_val.c-bpf_gcc-CFLAGS := -fno-strict-aliasing
114progs/verifier_spill_fill.c-bpf_gcc-CFLAGS := -fno-strict-aliasing
115progs/verifier_subprog_precision.c-bpf_gcc-CFLAGS := -fno-strict-aliasing
116progs/verifier_uninit.c-bpf_gcc-CFLAGS := -fno-strict-aliasing
117endif
118
119ifneq ($(CLANG_CPUV4),)
120TEST_GEN_PROGS += test_progs-cpuv4
121TEST_INST_SUBDIRS += cpuv4
122endif
123
124TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_tc_edt.bpf.o
125TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)
126
127# Order correspond to 'make run_tests' order
128TEST_PROGS := test_kmod.sh \
129 test_xdp_redirect.sh \
130 test_xdp_redirect_multi.sh \
131 test_xdp_meta.sh \
132 test_tunnel.sh \
133 test_lwt_seg6local.sh \
134 test_lirc_mode2.sh \
135 test_skb_cgroup_id.sh \
136 test_flow_dissector.sh \
137 test_xdp_vlan_mode_generic.sh \
138 test_xdp_vlan_mode_native.sh \
139 test_lwt_ip_encap.sh \
140 test_tcp_check_syncookie.sh \
141 test_tc_tunnel.sh \
142 test_tc_edt.sh \
143 test_xdping.sh \
144 test_bpftool_build.sh \
145 test_bpftool.sh \
146 test_bpftool_metadata.sh \
147 test_doc_build.sh \
148 test_xsk.sh \
149 test_xdp_features.sh
150
151TEST_PROGS_EXTENDED := with_addr.sh \
152 with_tunnels.sh ima_setup.sh verify_sig_setup.sh \
153 test_xdp_vlan.sh test_bpftool.py
154
155# Compile but not part of 'make run_tests'
156TEST_GEN_PROGS_EXTENDED = \
157 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
158 test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
159 xskxceiver xdp_redirect_multi xdp_synproxy veristat xdp_hw_metadata \
160 xdp_features bpf_test_no_cfi.ko bpf_test_modorder_x.ko \
161 bpf_test_modorder_y.ko
162
163TEST_GEN_FILES += liburandom_read.so urandom_read sign-file uprobe_multi
164
165ifneq ($(V),1)
166submake_extras := feature_display=0
167endif
168
169# override lib.mk's default rules
170OVERRIDE_TARGETS := 1
171override 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
179endef
180
181include ../lib.mk
182
183NON_CHECK_FEAT_TARGETS := clean docs-clean
184CHECK_FEAT := $(filter-out $(NON_CHECK_FEAT_TARGETS),$(or $(MAKECMDGOALS), "none"))
185ifneq ($(CHECK_FEAT),)
186FEATURE_USER := .selftests
187FEATURE_TESTS := llvm
188FEATURE_DISPLAY := $(FEATURE_TESTS)
189
190# Makefile.feature expects OUTPUT to end with a slash
191ifeq ($(shell expr $(MAKE_VERSION) \>= 4.4), 1)
192$(let OUTPUT,$(OUTPUT)/,\
193 $(eval include ../../../build/Makefile.feature))
194else
195OUTPUT := $(OUTPUT)/
196$(eval include ../../../build/Makefile.feature)
197OUTPUT := $(patsubst %/,%,$(OUTPUT))
198endif
199endif
200
201ifeq ($(feature-llvm),1)
202 LLVM_CFLAGS += -DHAVE_LLVM_SUPPORT
203 LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets
204 # both llvm-config and lib.mk add -D_GNU_SOURCE, which ends up as conflict
205 LLVM_CFLAGS += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags))
206 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-static --libs $(LLVM_CONFIG_LIB_COMPONENTS))
207 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-static --system-libs $(LLVM_CONFIG_LIB_COMPONENTS))
208 LLVM_LDLIBS += -lstdc++
209 LLVM_LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags)
210endif
211
212SCRATCH_DIR := $(OUTPUT)/tools
213BUILD_DIR := $(SCRATCH_DIR)/build
214INCLUDE_DIR := $(SCRATCH_DIR)/include
215BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
216ifneq ($(CROSS_COMPILE),)
217HOST_BUILD_DIR := $(BUILD_DIR)/host
218HOST_SCRATCH_DIR := $(OUTPUT)/host-tools
219HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include
220else
221HOST_BUILD_DIR := $(BUILD_DIR)
222HOST_SCRATCH_DIR := $(SCRATCH_DIR)
223HOST_INCLUDE_DIR := $(INCLUDE_DIR)
224endif
225HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
226RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
227RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
228
229VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
230 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
231 ../../../../vmlinux \
232 /sys/kernel/btf/vmlinux \
233 /boot/vmlinux-$(shell uname -r)
234VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
235ifeq ($(VMLINUX_BTF),)
236$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
237endif
238
239# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
240# to build individual tests.
241# NOTE: Semicolon at the end is critical to override lib.mk's default static
242# rule for binaries.
243$(notdir $(TEST_GEN_PROGS) \
244 $(TEST_GEN_PROGS_EXTENDED)): %: $(OUTPUT)/% ;
245
246# sort removes libbpf duplicates when not cross-building
247MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \
248 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \
249 $(HOST_BUILD_DIR)/resolve_btfids \
250 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR))
251$(MAKE_DIRS):
252 $(call msg,MKDIR,,$@)
253 $(Q)mkdir -p $@
254
255$(OUTPUT)/%.o: %.c
256 $(call msg,CC,,$@)
257 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
258
259$(OUTPUT)/%:%.c
260 $(call msg,BINARY,,$@)
261 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
262
263# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
264ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv))
265LLD := lld
266else
267LLD := $(shell command -v $(LD))
268endif
269
270# Filter out -static for liburandom_read.so and its dependent targets so that static builds
271# do not fail. Static builds leave urandom_read relying on system-wide shared libraries.
272$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom_read.map
273 $(call msg,LIB,,$@)
274 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \
275 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \
276 $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \
277 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
278 -Wl,--version-script=liburandom_read.map \
279 -fPIC -shared -o $@
280
281$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
282 $(call msg,BINARY,,$@)
283 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \
284 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
285 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \
286 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
287 -Wl,-rpath=. -o $@
288
289$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c
290 $(call msg,SIGN-FILE,,$@)
291 $(Q)$(CC) $(shell $(PKG_CONFIG) --cflags libcrypto 2> /dev/null) \
292 $< -o $@ \
293 $(shell $(PKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
294
295$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch])
296 $(call msg,MOD,,$@)
297 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation
298 $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_testmod
299 $(Q)cp bpf_testmod/bpf_testmod.ko $@
300
301$(OUTPUT)/bpf_test_no_cfi.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_test_no_cfi/Makefile bpf_test_no_cfi/*.[ch])
302 $(call msg,MOD,,$@)
303 $(Q)$(RM) bpf_test_no_cfi/bpf_test_no_cfi.ko # force re-compilation
304 $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_test_no_cfi
305 $(Q)cp bpf_test_no_cfi/bpf_test_no_cfi.ko $@
306
307$(OUTPUT)/bpf_test_modorder_x.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_test_modorder_x/Makefile bpf_test_modorder_x/*.[ch])
308 $(call msg,MOD,,$@)
309 $(Q)$(RM) bpf_test_modorder_x/bpf_test_modorder_x.ko # force re-compilation
310 $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_test_modorder_x
311 $(Q)cp bpf_test_modorder_x/bpf_test_modorder_x.ko $@
312
313$(OUTPUT)/bpf_test_modorder_y.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_test_modorder_y/Makefile bpf_test_modorder_y/*.[ch])
314 $(call msg,MOD,,$@)
315 $(Q)$(RM) bpf_test_modorder_y/bpf_test_modorder_y.ko # force re-compilation
316 $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_test_modorder_y
317 $(Q)cp bpf_test_modorder_y/bpf_test_modorder_y.ko $@
318
319
320DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
321ifneq ($(CROSS_COMPILE),)
322CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool
323TRUNNER_BPFTOOL := $(CROSS_BPFTOOL)
324USE_BOOTSTRAP := ""
325else
326TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL)
327USE_BOOTSTRAP := "bootstrap/"
328endif
329
330$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
331 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \
332 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \
333 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
334 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf/ \
335 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \
336 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS)' \
337 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' && \
338 cp $(RUNQSLOWER_OUTPUT)runqslower $@
339
340TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL)
341
342$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
343
344TESTING_HELPERS := $(OUTPUT)/testing_helpers.o
345CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o
346UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o
347TRACE_HELPERS := $(OUTPUT)/trace_helpers.o
348JSON_WRITER := $(OUTPUT)/json_writer.o
349CAP_HELPERS := $(OUTPUT)/cap_helpers.o
350NETWORK_HELPERS := $(OUTPUT)/network_helpers.o
351
352$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS)
353$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS)
354$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS)
355$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS)
356$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS)
357$(OUTPUT)/test_tag: $(TESTING_HELPERS)
358$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS)
359$(OUTPUT)/xdping: $(TESTING_HELPERS)
360$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)
361$(OUTPUT)/test_maps: $(TESTING_HELPERS)
362$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS)
363$(OUTPUT)/xsk.o: $(BPFOBJ)
364$(OUTPUT)/test_tcp_check_syncookie_user: $(NETWORK_HELPERS)
365
366BPFTOOL ?= $(DEFAULT_BPFTOOL)
367$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
368 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
369 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
370 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \
371 EXTRA_CFLAGS='-g $(OPT_FLAGS)' \
372 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
373 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
374 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
375 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
376
377ifneq ($(CROSS_COMPILE),)
378$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
379 $(BPFOBJ) | $(BUILD_DIR)/bpftool
380 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
381 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \
382 EXTRA_CFLAGS='-g $(OPT_FLAGS)' \
383 OUTPUT=$(BUILD_DIR)/bpftool/ \
384 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \
385 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \
386 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin
387endif
388
389all: docs
390
391docs:
392 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \
393 -f Makefile.docs \
394 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
395
396docs-clean:
397 $(Q)$(MAKE) $(submake_extras) \
398 -f Makefile.docs \
399 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
400
401$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
402 $(APIDIR)/linux/bpf.h \
403 | $(BUILD_DIR)/libbpf
404 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
405 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS)' \
406 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' \
407 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
408
409ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
410$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
411 $(APIDIR)/linux/bpf.h \
412 | $(HOST_BUILD_DIR)/libbpf
413 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
414 EXTRA_CFLAGS='-g $(OPT_FLAGS)' ARCH= CROSS_COMPILE= \
415 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
416 CC="$(HOSTCC)" LD="$(HOSTLD)" \
417 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
418endif
419
420# vmlinux.h is first dumped to a temprorary file and then compared to
421# the previous version. This helps to avoid unnecessary re-builds of
422# $(TRUNNER_BPF_OBJS)
423$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
424ifeq ($(VMLINUX_H),)
425 $(call msg,GEN,,$@)
426 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $(INCLUDE_DIR)/.vmlinux.h.tmp
427 $(Q)cmp -s $(INCLUDE_DIR)/.vmlinux.h.tmp $@ || mv $(INCLUDE_DIR)/.vmlinux.h.tmp $@
428else
429 $(call msg,CP,,$@)
430 $(Q)cp "$(VMLINUX_H)" $@
431endif
432
433$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
434 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
435 $(TOOLSDIR)/lib/rbtree.c \
436 $(TOOLSDIR)/lib/zalloc.c \
437 $(TOOLSDIR)/lib/string.c \
438 $(TOOLSDIR)/lib/ctype.c \
439 $(TOOLSDIR)/lib/str_error_r.c
440 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
441 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \
442 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
443 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
444
445# Get Clang's default includes on this system, as opposed to those seen by
446# '--target=bpf'. This fixes "missing" files on some architectures/distros,
447# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
448#
449# Use '-idirafter': Don't interfere with include mechanics except where the
450# build would have failed anyways.
451define get_sys_includes
452$(shell $(1) $(2) -v -E - </dev/null 2>&1 \
453 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
454$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \
455$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') \
456$(shell $(1) $(2) -dM -E - </dev/null | grep -E 'MIPS(EL|EB)|_MIPS_SZ(PTR|LONG) |_MIPS_SIM |_ABI(O32|N32|64) ' | awk '{printf("-D%s=%s ", $$2, $$3)}')
457endef
458
459# Determine target endianness.
460IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
461 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
462MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
463
464ifneq ($(CROSS_COMPILE),)
465CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%))
466endif
467
468CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH))
469BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
470 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
471 -I$(abspath $(OUTPUT)/../usr/include) \
472 -Wno-compare-distinct-pointer-types
473# TODO: enable me -Wsign-compare
474
475CLANG_CFLAGS = $(CLANG_SYS_INCLUDES)
476
477$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
478$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
479
480$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
481$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h
482
483# Build BPF object using Clang
484# $1 - input .c file
485# $2 - output .o file
486# $3 - CFLAGS
487# $4 - binary name
488define CLANG_BPF_BUILD_RULE
489 $(call msg,CLNG-BPF,$4,$2)
490 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v3 -o $2
491endef
492# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
493define CLANG_NOALU32_BPF_BUILD_RULE
494 $(call msg,CLNG-BPF,$4,$2)
495 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v2 -o $2
496endef
497# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4
498define CLANG_CPUV4_BPF_BUILD_RULE
499 $(call msg,CLNG-BPF,$4,$2)
500 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v4 -o $2
501endef
502# Build BPF object using GCC
503define GCC_BPF_BUILD_RULE
504 $(call msg,GCC-BPF,$4,$2)
505 $(Q)$(BPF_GCC) $3 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes -O2 -c $1 -o $2
506endef
507
508SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
509
510LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
511 linked_vars.skel.h linked_maps.skel.h \
512 test_subskeleton.skel.h test_subskeleton_lib.skel.h \
513 test_usdt.skel.h
514
515LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \
516 trace_printk.c trace_vprintk.c map_ptr_kern.c \
517 core_kern.c core_kern_overflow.c test_ringbuf.c \
518 test_ringbuf_n.c test_ringbuf_map_key.c test_ringbuf_write.c
519
520# Generate both light skeleton and libbpf skeleton for these
521LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \
522 kfunc_call_test_subprog.c
523SKEL_BLACKLIST += $$(LSKELS)
524
525test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o
526linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o
527linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o
528linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o
529# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file
530# but that's created as a side-effect of the skel.h generation.
531test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o
532test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o
533test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o
534xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o
535xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o
536xdp_features.skel.h-deps := xdp_features.bpf.o
537
538LINKED_BPF_OBJS := $(foreach skel,$(LINKED_SKELS),$($(skel)-deps))
539LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(LINKED_BPF_OBJS))
540
541HEADERS_FOR_BPF_OBJS := $(wildcard $(BPFDIR)/*.bpf.h) \
542 $(addprefix $(BPFDIR)/, bpf_core_read.h \
543 bpf_endian.h \
544 bpf_helpers.h \
545 bpf_tracing.h)
546
547# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
548# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
549# Parameters:
550# $1 - test runner base binary name (e.g., test_progs)
551# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc)
552define DEFINE_TEST_RUNNER
553
554TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
555TRUNNER_BINARY := $1$(if $2,-)$2
556TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
557 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
558TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
559 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
560TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
561TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
562TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
563TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS))
564TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
565 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
566 $$(TRUNNER_BPF_SRCS)))
567TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
568TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
569TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
570
571# Evaluate rules now with extra TRUNNER_XXX variables above already defined
572$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
573
574endef
575
576# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
577# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
578# $1 - test runner base binary name (e.g., test_progs)
579# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc)
580define DEFINE_TEST_RUNNER_RULES
581
582ifeq ($($(TRUNNER_OUTPUT)-dir),)
583$(TRUNNER_OUTPUT)-dir := y
584$(TRUNNER_OUTPUT):
585 $$(call msg,MKDIR,,$$@)
586 $(Q)mkdir -p $$@
587endif
588
589# ensure we set up BPF objects generation rule just once for a given
590# input/output directory combination
591ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
592$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
593$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \
594 $(TRUNNER_BPF_PROGS_DIR)/%.c \
595 $(TRUNNER_BPF_PROGS_DIR)/*.h \
596 $$(INCLUDE_DIR)/vmlinux.h \
597 $(HEADERS_FOR_BPF_OBJS) \
598 | $(TRUNNER_OUTPUT) $$(BPFOBJ)
599 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
600 $(TRUNNER_BPF_CFLAGS) \
601 $$($$<-CFLAGS) \
602 $$($$<-$2-CFLAGS),$(TRUNNER_BINARY))
603
604$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
605 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
606 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
607 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
608 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
609 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
610 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@
611 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h)
612 $(Q)rm -f $$(<:.o=.linked1.o) $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
613
614$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
615 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
616 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$<
617 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o)
618 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o)
619 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
620 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@
621 $(Q)rm -f $$(<:.o=.llinked1.o) $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
622
623$(LINKED_BPF_OBJS): %: $(TRUNNER_OUTPUT)/%
624
625# .SECONDEXPANSION here allows to correctly expand %-deps variables as prerequisites
626.SECONDEXPANSION:
627$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_OUTPUT)/%: $$$$(%-deps) $(BPFTOOL) | $(TRUNNER_OUTPUT)
628 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o))
629 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps))
630 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o)
631 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o)
632 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
633 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
634 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@
635 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h)
636 $(Q)rm -f $$(@:.skel.h=.linked1.o) $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
637
638# When the compiler generates a %.d file, only skel basenames (not
639# full paths) are specified as prerequisites for corresponding %.o
640# file. This target makes %.skel.h basename dependent on full paths,
641# linking generated %.d dependency with actual %.skel.h files.
642$(notdir %.skel.h): $(TRUNNER_OUTPUT)/%.skel.h
643 @true
644
645endif
646
647# ensure we set up tests.h header generation rule just once
648ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
649$(TRUNNER_TESTS_DIR)-tests-hdr := y
650$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
651 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
652 $$(shell (echo '/* Generated header, do not edit */'; \
653 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \
654 $(TRUNNER_TESTS_DIR)/*.c | sort ; \
655 ) > $$@)
656endif
657
658# compile individual test files
659# Note: we cd into output directory to ensure embedded BPF object is found
660$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
661 $(TRUNNER_TESTS_DIR)/%.c \
662 | $(TRUNNER_OUTPUT)/%.test.d
663 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
664 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -MMD -MT $$@ -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
665
666$(TRUNNER_TEST_OBJS:.o=.d): $(TRUNNER_OUTPUT)/%.test.d: \
667 $(TRUNNER_TESTS_DIR)/%.c \
668 $(TRUNNER_EXTRA_HDRS) \
669 $(TRUNNER_BPF_SKELS) \
670 $(TRUNNER_BPF_LSKELS) \
671 $(TRUNNER_BPF_SKELS_LINKED) \
672 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
673
674ifeq ($(filter clean docs-clean,$(MAKECMDGOALS)),)
675include $(wildcard $(TRUNNER_TEST_OBJS:.o=.d))
676endif
677
678# add per extra obj CFGLAGS definitions
679$(foreach N,$(patsubst $(TRUNNER_OUTPUT)/%.o,%,$(TRUNNER_EXTRA_OBJS)), \
680 $(eval $(TRUNNER_OUTPUT)/$(N).o: CFLAGS += $($(N).c-CFLAGS)))
681
682$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
683 %.c \
684 $(TRUNNER_EXTRA_HDRS) \
685 $(TRUNNER_TESTS_HDR) \
686 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
687 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
688 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
689
690# non-flavored in-srctree builds receive special treatment, in particular, we
691# do not need to copy extra resources (see e.g. test_btf_dump_case())
692$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
693ifneq ($2:$(OUTPUT),:$(shell pwd))
694 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
695 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
696endif
697
698$(OUTPUT)/$(TRUNNER_BINARY): LDLIBS += $$(LLVM_LDLIBS)
699$(OUTPUT)/$(TRUNNER_BINARY): LDFLAGS += $$(LLVM_LDFLAGS)
700
701# some X.test.o files have runtime dependencies on Y.bpf.o files
702$(OUTPUT)/$(TRUNNER_BINARY): | $(TRUNNER_BPF_OBJS)
703
704$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
705 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
706 $(RESOLVE_BTFIDS) \
707 $(TRUNNER_BPFTOOL) \
708 | $(TRUNNER_BINARY)-extras
709 $$(call msg,BINARY,,$$@)
710 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) $$(LDFLAGS) -o $$@
711 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@
712 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \
713 $(OUTPUT)/$(if $2,$2/)bpftool
714
715endef
716
717# Define test_progs test runner.
718TRUNNER_TESTS_DIR := prog_tests
719TRUNNER_BPF_PROGS_DIR := progs
720TRUNNER_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.h
737TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \
738 $(OUTPUT)/bpf_test_no_cfi.ko \
739 $(OUTPUT)/bpf_test_modorder_x.ko \
740 $(OUTPUT)/bpf_test_modorder_y.ko \
741 $(OUTPUT)/liburandom_read.so \
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_dump_test_case_*.c) \
748 $(wildcard progs/*.bpf.o)
749TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
750TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
751$(eval $(call DEFINE_TEST_RUNNER,test_progs))
752
753# Define test_progs-no_alu32 test runner.
754TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
755TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
756$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
757
758# Define test_progs-cpuv4 test runner.
759ifneq ($(CLANG_CPUV4),)
760TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE
761TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
762$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4))
763endif
764
765# Define test_progs BPF-GCC-flavored test runner.
766ifneq ($(BPF_GCC),)
767TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
768TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,)
769$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
770endif
771
772# Define test_maps test runner.
773TRUNNER_TESTS_DIR := map_tests
774TRUNNER_BPF_PROGS_DIR := progs
775TRUNNER_EXTRA_SOURCES := test_maps.c
776TRUNNER_EXTRA_FILES :=
777TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
778TRUNNER_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 and sufficiently different from
783# them (e.g., test.h is using completely pattern), that it's worth just
784# explicitly defining all the rules explicitly.
785verifier/tests.h: verifier/*.c
786 $(shell ( cd verifier/; \
787 echo '/* Generated header, do not edit */'; \
788 echo '#ifdef FILL_ARRAY'; \
789 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
790 echo '#endif' \
791 ) > verifier/tests.h)
792$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
793 $(call msg,BINARY,,$@)
794 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
795
796# Include find_bit.c to compile xskxceiver.
797EXTRA_SRC := $(TOOLSDIR)/lib/find_bit.c
798$(OUTPUT)/xskxceiver: $(EXTRA_SRC) xskxceiver.c xskxceiver.h $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT)
799 $(call msg,BINARY,,$@)
800 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
801
802$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT)
803 $(call msg,BINARY,,$@)
804 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
805
806$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT)
807 $(call msg,BINARY,,$@)
808 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
809
810# Make sure we are able to include and link libbpf against c++.
811$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
812 $(call msg,CXX,,$@)
813 $(Q)$(CXX) $(subst -D_GNU_SOURCE=,,$(CFLAGS)) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
814
815# Benchmark runner
816$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
817 $(call msg,CC,,$@)
818 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
819$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
820$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
821$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
822 $(OUTPUT)/perfbuf_bench.skel.h
823$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
824$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h
825$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h
826$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h
827$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h
828$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h
829$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h
830$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h
831$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h
832$(OUTPUT)/bench_bpf_crypto.o: $(OUTPUT)/crypto_bench.skel.h
833$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
834$(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_map.o \
844 $(OUTPUT)/bench_bpf_loop.o \
845 $(OUTPUT)/bench_strncmp.o \
846 $(OUTPUT)/bench_bpf_hashmap_full_update.o \
847 $(OUTPUT)/bench_local_storage.o \
848 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \
849 $(OUTPUT)/bench_bpf_hashmap_lookup.o \
850 $(OUTPUT)/bench_local_storage_create.o \
851 $(OUTPUT)/bench_htab_mem.o \
852 $(OUTPUT)/bench_bpf_crypto.o \
853 #
854 $(call msg,BINARY,,$@)
855 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
856
857$(OUTPUT)/veristat.o: $(BPFOBJ)
858$(OUTPUT)/veristat: $(OUTPUT)/veristat.o
859 $(call msg,BINARY,,$@)
860 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
861
862# Linking uprobe_multi can fail due to relocation overflows on mips.
863$(OUTPUT)/uprobe_multi: CFLAGS += $(if $(filter mips, $(ARCH)),-mxgot)
864$(OUTPUT)/uprobe_multi: uprobe_multi.c uprobe_multi.ld
865 $(call msg,BINARY,,$@)
866 $(Q)$(CC) $(CFLAGS) -Wl,-T,uprobe_multi.ld -O0 $(LDFLAGS) \
867 $(filter-out %.ld,$^) $(LDLIBS) -o $@
868
869EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
870 prog_tests/tests.h map_tests/tests.h verifier/tests.h \
871 feature bpftool \
872 $(addprefix $(OUTPUT)/,*.o *.d *.skel.h *.lskel.h *.subskel.h \
873 no_alu32 cpuv4 bpf_gcc bpf_testmod.ko \
874 bpf_test_no_cfi.ko \
875 bpf_test_modorder_x.ko \
876 bpf_test_modorder_y.ko \
877 liburandom_read.so) \
878 $(OUTPUT)/FEATURE-DUMP.selftests
879
880.PHONY: docs docs-clean
881
882# Delete partially updated (corrupted) files on error
883.DELETE_ON_ERROR:
884
885DEFAULT_INSTALL_RULE := $(INSTALL_RULE)
886override 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.o $(INSTALL_PATH)/$$DIR;\
891 done
892endef