Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0
2include ../../../build/Build.include
3include ../../../scripts/Makefile.arch
4include ../../../scripts/Makefile.include
5
6CXX ?= $(CROSS_COMPILE)g++
7
8CURDIR := $(abspath .)
9TOOLSDIR := $(abspath ../../..)
10LIBDIR := $(TOOLSDIR)/lib
11BPFDIR := $(LIBDIR)/bpf
12TOOLSINCDIR := $(TOOLSDIR)/include
13BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
14APIDIR := $(TOOLSINCDIR)/uapi
15GENDIR := $(abspath ../../../../include/generated)
16GENHDR := $(GENDIR)/autoconf.h
17
18ifneq ($(wildcard $(GENHDR)),)
19 GENFLAGS := -DHAVE_GENHDR
20endif
21
22BPF_GCC ?= $(shell command -v bpf-gcc;)
23SAN_CFLAGS ?=
24CFLAGS += -g -O0 -rdynamic -Wall -Werror $(GENFLAGS) $(SAN_CFLAGS) \
25 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \
26 -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT)
27LDFLAGS += $(SAN_CFLAGS)
28LDLIBS += -lelf -lz -lrt -lpthread
29
30# Silence some warnings when compiled with clang
31ifneq ($(LLVM),)
32CFLAGS += -Wno-unused-command-line-argument
33endif
34
35# Order correspond to 'make run_tests' order
36TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
37 test_verifier_log test_dev_cgroup \
38 test_sock test_sockmap get_cgroup_id_user \
39 test_cgroup_storage \
40 test_tcpnotify_user test_sysctl \
41 test_progs-no_alu32
42
43# Also test bpf-gcc, if present
44ifneq ($(BPF_GCC),)
45TEST_GEN_PROGS += test_progs-bpf_gcc
46endif
47
48TEST_GEN_FILES = test_lwt_ip_encap.o test_tc_edt.o
49TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)
50
51# Order correspond to 'make run_tests' order
52TEST_PROGS := test_kmod.sh \
53 test_xdp_redirect.sh \
54 test_xdp_redirect_multi.sh \
55 test_xdp_meta.sh \
56 test_xdp_veth.sh \
57 test_offload.py \
58 test_sock_addr.sh \
59 test_tunnel.sh \
60 test_lwt_seg6local.sh \
61 test_lirc_mode2.sh \
62 test_skb_cgroup_id.sh \
63 test_flow_dissector.sh \
64 test_xdp_vlan_mode_generic.sh \
65 test_xdp_vlan_mode_native.sh \
66 test_lwt_ip_encap.sh \
67 test_tcp_check_syncookie.sh \
68 test_tc_tunnel.sh \
69 test_tc_edt.sh \
70 test_xdping.sh \
71 test_bpftool_build.sh \
72 test_bpftool.sh \
73 test_bpftool_metadata.sh \
74 test_doc_build.sh \
75 test_xsk.sh
76
77TEST_PROGS_EXTENDED := with_addr.sh \
78 with_tunnels.sh ima_setup.sh \
79 test_xdp_vlan.sh test_bpftool.py
80
81# Compile but not part of 'make run_tests'
82TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
83 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
84 test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
85 xdpxceiver xdp_redirect_multi
86
87TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
88
89# Emit succinct information message describing current building step
90# $1 - generic step name (e.g., CC, LINK, etc);
91# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
92# $3 - target (assumed to be file); only file name will be emitted;
93# $4 - optional extra arg, emitted as-is, if provided.
94ifeq ($(V),1)
95Q =
96msg =
97else
98Q = @
99msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
100MAKEFLAGS += --no-print-directory
101submake_extras := feature_display=0
102endif
103
104# override lib.mk's default rules
105OVERRIDE_TARGETS := 1
106override define CLEAN
107 $(call msg,CLEAN)
108 $(Q)$(RM) -r $(TEST_GEN_PROGS)
109 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED)
110 $(Q)$(RM) -r $(TEST_GEN_FILES)
111 $(Q)$(RM) -r $(EXTRA_CLEAN)
112 $(Q)$(MAKE) -C bpf_testmod clean
113 $(Q)$(MAKE) docs-clean
114endef
115
116include ../lib.mk
117
118SCRATCH_DIR := $(OUTPUT)/tools
119BUILD_DIR := $(SCRATCH_DIR)/build
120INCLUDE_DIR := $(SCRATCH_DIR)/include
121BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
122ifneq ($(CROSS_COMPILE),)
123HOST_BUILD_DIR := $(BUILD_DIR)/host
124HOST_SCRATCH_DIR := $(OUTPUT)/host-tools
125HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include
126else
127HOST_BUILD_DIR := $(BUILD_DIR)
128HOST_SCRATCH_DIR := $(SCRATCH_DIR)
129HOST_INCLUDE_DIR := $(INCLUDE_DIR)
130endif
131HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
132RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
133RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
134
135VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
136 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
137 ../../../../vmlinux \
138 /sys/kernel/btf/vmlinux \
139 /boot/vmlinux-$(shell uname -r)
140VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
141ifeq ($(VMLINUX_BTF),)
142$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
143endif
144
145# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
146# to build individual tests.
147# NOTE: Semicolon at the end is critical to override lib.mk's default static
148# rule for binaries.
149$(notdir $(TEST_GEN_PROGS) \
150 $(TEST_PROGS) \
151 $(TEST_PROGS_EXTENDED) \
152 $(TEST_GEN_PROGS_EXTENDED) \
153 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
154
155# sort removes libbpf duplicates when not cross-building
156MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \
157 $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids \
158 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR))
159$(MAKE_DIRS):
160 $(call msg,MKDIR,,$@)
161 $(Q)mkdir -p $@
162
163$(OUTPUT)/%.o: %.c
164 $(call msg,CC,,$@)
165 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
166
167$(OUTPUT)/%:%.c
168 $(call msg,BINARY,,$@)
169 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
170
171# Filter out -static for liburandom_read.so and its dependent targets so that static builds
172# do not fail. Static builds leave urandom_read relying on system-wide shared libraries.
173$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c
174 $(call msg,LIB,,$@)
175 $(Q)$(CC) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $^ $(LDLIBS) -fPIC -shared -o $@
176
177$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
178 $(call msg,BINARY,,$@)
179 $(Q)$(CC) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
180 liburandom_read.so $(LDLIBS) \
181 -Wl,-rpath=. -Wl,--build-id=sha1 -o $@
182
183$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch])
184 $(call msg,MOD,,$@)
185 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation
186 $(Q)$(MAKE) $(submake_extras) -C bpf_testmod
187 $(Q)cp bpf_testmod/bpf_testmod.ko $@
188
189DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
190
191$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
192 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \
193 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \
194 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
195 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \
196 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) && \
197 cp $(RUNQSLOWER_OUTPUT)runqslower $@
198
199TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL)
200
201$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
202
203CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o
204TESTING_HELPERS := $(OUTPUT)/testing_helpers.o
205TRACE_HELPERS := $(OUTPUT)/trace_helpers.o
206CAP_HELPERS := $(OUTPUT)/cap_helpers.o
207
208$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS)
209$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
210$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS)
211$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS)
212$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS)
213$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS)
214$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
215$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS)
216$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS)
217$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS)
218$(OUTPUT)/test_tag: $(TESTING_HELPERS)
219$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS)
220$(OUTPUT)/xdping: $(TESTING_HELPERS)
221$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)
222$(OUTPUT)/test_maps: $(TESTING_HELPERS)
223$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS)
224
225BPFTOOL ?= $(DEFAULT_BPFTOOL)
226$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
227 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
228 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
229 ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) \
230 EXTRA_CFLAGS='-g -O0' \
231 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
232 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
233 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
234 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
235
236all: docs
237
238docs:
239 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \
240 -f Makefile.docs \
241 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
242
243docs-clean:
244 $(Q)$(MAKE) $(submake_extras) \
245 -f Makefile.docs \
246 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
247
248$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
249 $(APIDIR)/linux/bpf.h \
250 | $(BUILD_DIR)/libbpf
251 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
252 EXTRA_CFLAGS='-g -O0' \
253 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
254
255ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
256$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
257 $(APIDIR)/linux/bpf.h \
258 | $(HOST_BUILD_DIR)/libbpf
259 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
260 EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \
261 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \
262 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
263endif
264
265$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
266ifeq ($(VMLINUX_H),)
267 $(call msg,GEN,,$@)
268 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
269else
270 $(call msg,CP,,$@)
271 $(Q)cp "$(VMLINUX_H)" $@
272endif
273
274$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
275 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
276 $(TOOLSDIR)/lib/rbtree.c \
277 $(TOOLSDIR)/lib/zalloc.c \
278 $(TOOLSDIR)/lib/string.c \
279 $(TOOLSDIR)/lib/ctype.c \
280 $(TOOLSDIR)/lib/str_error_r.c
281 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
282 CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \
283 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
284 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
285
286# Get Clang's default includes on this system, as opposed to those seen by
287# '-target bpf'. This fixes "missing" files on some architectures/distros,
288# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
289#
290# Use '-idirafter': Don't interfere with include mechanics except where the
291# build would have failed anyways.
292define get_sys_includes
293$(shell $(1) -v -E - </dev/null 2>&1 \
294 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
295$(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}')
296endef
297
298# Determine target endianness.
299IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
300 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
301MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
302
303CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
304BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
305 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
306 -I$(abspath $(OUTPUT)/../usr/include)
307
308CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
309 -Wno-compare-distinct-pointer-types
310
311$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
312$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
313
314$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
315
316# Build BPF object using Clang
317# $1 - input .c file
318# $2 - output .o file
319# $3 - CFLAGS
320define CLANG_BPF_BUILD_RULE
321 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
322 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v3 -o $2
323endef
324# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
325define CLANG_NOALU32_BPF_BUILD_RULE
326 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
327 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v2 -o $2
328endef
329# Build BPF object using GCC
330define GCC_BPF_BUILD_RULE
331 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
332 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
333endef
334
335SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
336
337LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
338 linked_vars.skel.h linked_maps.skel.h \
339 test_subskeleton.skel.h test_subskeleton_lib.skel.h \
340 test_usdt.skel.h
341
342LSKELS := kfunc_call_test.c fentry_test.c fexit_test.c fexit_sleep.c \
343 test_ringbuf.c atomics.c trace_printk.c trace_vprintk.c \
344 map_ptr_kern.c core_kern.c core_kern_overflow.c
345# Generate both light skeleton and libbpf skeleton for these
346LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test_subprog.c
347SKEL_BLACKLIST += $$(LSKELS)
348
349test_static_linked.skel.h-deps := test_static_linked1.o test_static_linked2.o
350linked_funcs.skel.h-deps := linked_funcs1.o linked_funcs2.o
351linked_vars.skel.h-deps := linked_vars1.o linked_vars2.o
352linked_maps.skel.h-deps := linked_maps1.o linked_maps2.o
353# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file
354# but that's created as a side-effect of the skel.h generation.
355test_subskeleton.skel.h-deps := test_subskeleton_lib2.o test_subskeleton_lib.o test_subskeleton.o
356test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.o test_subskeleton_lib.o
357test_usdt.skel.h-deps := test_usdt.o test_usdt_multispec.o
358
359LINKED_BPF_SRCS := $(patsubst %.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps)))
360
361# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
362# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
363# Parameters:
364# $1 - test runner base binary name (e.g., test_progs)
365# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
366define DEFINE_TEST_RUNNER
367
368TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
369TRUNNER_BINARY := $1$(if $2,-)$2
370TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
371 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
372TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
373 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
374TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
375TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
376TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
377TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS))
378TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
379 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
380 $$(TRUNNER_BPF_SRCS)))
381TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
382TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
383TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
384
385# Evaluate rules now with extra TRUNNER_XXX variables above already defined
386$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
387
388endef
389
390# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
391# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
392# $1 - test runner base binary name (e.g., test_progs)
393# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
394define DEFINE_TEST_RUNNER_RULES
395
396ifeq ($($(TRUNNER_OUTPUT)-dir),)
397$(TRUNNER_OUTPUT)-dir := y
398$(TRUNNER_OUTPUT):
399 $$(call msg,MKDIR,,$$@)
400 $(Q)mkdir -p $$@
401endif
402
403# ensure we set up BPF objects generation rule just once for a given
404# input/output directory combination
405ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
406$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
407$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \
408 $(TRUNNER_BPF_PROGS_DIR)/%.c \
409 $(TRUNNER_BPF_PROGS_DIR)/*.h \
410 $$(INCLUDE_DIR)/vmlinux.h \
411 $(wildcard $(BPFDIR)/bpf_*.h) \
412 $(wildcard $(BPFDIR)/*.bpf.h) \
413 | $(TRUNNER_OUTPUT) $$(BPFOBJ)
414 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
415 $(TRUNNER_BPF_CFLAGS))
416
417$(TRUNNER_BPF_SKELS): %.skel.h: %.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
418 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
419 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
420 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
421 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
422 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
423 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=)) > $$@
424 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=)) > $$(@:.skel.h=.subskel.h)
425
426$(TRUNNER_BPF_LSKELS): %.lskel.h: %.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
427 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
428 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$<
429 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o)
430 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o)
431 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
432 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.o=_lskel)) > $$@
433
434$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT)
435 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.o))
436 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps))
437 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o)
438 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o)
439 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
440 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
441 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@
442 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h)
443endif
444
445# ensure we set up tests.h header generation rule just once
446ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
447$(TRUNNER_TESTS_DIR)-tests-hdr := y
448$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
449 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
450 $$(shell (echo '/* Generated header, do not edit */'; \
451 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \
452 $(TRUNNER_TESTS_DIR)/*.c | sort ; \
453 ) > $$@)
454endif
455
456# compile individual test files
457# Note: we cd into output directory to ensure embedded BPF object is found
458$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
459 $(TRUNNER_TESTS_DIR)/%.c \
460 $(TRUNNER_EXTRA_HDRS) \
461 $(TRUNNER_BPF_OBJS) \
462 $(TRUNNER_BPF_SKELS) \
463 $(TRUNNER_BPF_LSKELS) \
464 $(TRUNNER_BPF_SKELS_LINKED) \
465 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
466 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
467 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
468
469$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
470 %.c \
471 $(TRUNNER_EXTRA_HDRS) \
472 $(TRUNNER_TESTS_HDR) \
473 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
474 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
475 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
476
477# non-flavored in-srctree builds receive special treatment, in particular, we
478# do not need to copy extra resources (see e.g. test_btf_dump_case())
479$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
480ifneq ($2:$(OUTPUT),:$(shell pwd))
481 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
482 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
483endif
484
485$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
486 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
487 $(RESOLVE_BTFIDS) \
488 | $(TRUNNER_BINARY)-extras
489 $$(call msg,BINARY,,$$@)
490 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
491 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.o $$@
492 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/bootstrap/bpftool $(if $2,$2/)bpftool
493
494endef
495
496# Define test_progs test runner.
497TRUNNER_TESTS_DIR := prog_tests
498TRUNNER_BPF_PROGS_DIR := progs
499TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \
500 network_helpers.c testing_helpers.c \
501 btf_helpers.c flow_dissector_load.h \
502 cap_helpers.c
503TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \
504 $(OUTPUT)/liburandom_read.so \
505 ima_setup.sh \
506 $(wildcard progs/btf_dump_test_case_*.c)
507TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
508TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
509$(eval $(call DEFINE_TEST_RUNNER,test_progs))
510
511# Define test_progs-no_alu32 test runner.
512TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
513TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
514$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
515
516# Define test_progs BPF-GCC-flavored test runner.
517ifneq ($(BPF_GCC),)
518TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
519TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc)
520$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
521endif
522
523# Define test_maps test runner.
524TRUNNER_TESTS_DIR := map_tests
525TRUNNER_BPF_PROGS_DIR := progs
526TRUNNER_EXTRA_SOURCES := test_maps.c
527TRUNNER_EXTRA_FILES :=
528TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
529TRUNNER_BPF_CFLAGS :=
530$(eval $(call DEFINE_TEST_RUNNER,test_maps))
531
532# Define test_verifier test runner.
533# It is much simpler than test_maps/test_progs and sufficiently different from
534# them (e.g., test.h is using completely pattern), that it's worth just
535# explicitly defining all the rules explicitly.
536verifier/tests.h: verifier/*.c
537 $(shell ( cd verifier/; \
538 echo '/* Generated header, do not edit */'; \
539 echo '#ifdef FILL_ARRAY'; \
540 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
541 echo '#endif' \
542 ) > verifier/tests.h)
543$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
544 $(call msg,BINARY,,$@)
545 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
546
547# Make sure we are able to include and link libbpf against c++.
548$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
549 $(call msg,CXX,,$@)
550 $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
551
552# Benchmark runner
553$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
554 $(call msg,CC,,$@)
555 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
556$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
557$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
558$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
559 $(OUTPUT)/perfbuf_bench.skel.h
560$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
561$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h
562$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h
563$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
564$(OUTPUT)/bench: LDLIBS += -lm
565$(OUTPUT)/bench: $(OUTPUT)/bench.o \
566 $(TESTING_HELPERS) \
567 $(TRACE_HELPERS) \
568 $(OUTPUT)/bench_count.o \
569 $(OUTPUT)/bench_rename.o \
570 $(OUTPUT)/bench_trigger.o \
571 $(OUTPUT)/bench_ringbufs.o \
572 $(OUTPUT)/bench_bloom_filter_map.o \
573 $(OUTPUT)/bench_bpf_loop.o \
574 $(OUTPUT)/bench_strncmp.o
575 $(call msg,BINARY,,$@)
576 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
577
578EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
579 prog_tests/tests.h map_tests/tests.h verifier/tests.h \
580 feature bpftool \
581 $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h no_alu32 bpf_gcc bpf_testmod.ko)
582
583.PHONY: docs docs-clean