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