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 ../../../../scripts/Kbuild.include
3include ../../../scripts/Makefile.arch
4
5LIBDIR := ../../../lib
6BPFDIR := $(LIBDIR)/bpf
7APIDIR := ../../../include/uapi
8GENDIR := ../../../../include/generated
9GENHDR := $(GENDIR)/autoconf.h
10
11ifneq ($(wildcard $(GENHDR)),)
12 GENFLAGS := -DHAVE_GENHDR
13endif
14
15CLANG ?= clang
16LLC ?= llc
17LLVM_OBJCOPY ?= llvm-objcopy
18LLVM_READELF ?= llvm-readelf
19BTF_PAHOLE ?= pahole
20CFLAGS += -g -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include \
21 -Dbpf_prog_load=bpf_prog_test_load \
22 -Dbpf_load_program=bpf_test_load_program
23LDLIBS += -lcap -lelf -lrt -lpthread
24
25# Order correspond to 'make run_tests' order
26TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
27 test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \
28 test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \
29 test_cgroup_storage test_select_reuseport test_section_names \
30 test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \
31 test_btf_dump test_cgroup_attach xdping test_sockopt test_sockopt_sk \
32 test_sockopt_multi test_tcp_rtt
33
34BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c)))
35TEST_GEN_FILES = $(BPF_OBJ_FILES)
36
37BTF_C_FILES = $(wildcard progs/btf_dump_test_case_*.c)
38TEST_FILES = $(BTF_C_FILES)
39
40# Also test sub-register code-gen if LLVM has eBPF v3 processor support which
41# contains both ALU32 and JMP32 instructions.
42SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \
43 $(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \
44 $(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \
45 grep 'if w')
46ifneq ($(SUBREG_CODEGEN),)
47TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES))
48endif
49
50# Order correspond to 'make run_tests' order
51TEST_PROGS := test_kmod.sh \
52 test_libbpf.sh \
53 test_xdp_redirect.sh \
54 test_xdp_meta.sh \
55 test_xdp_veth.sh \
56 test_offload.py \
57 test_sock_addr.sh \
58 test_tunnel.sh \
59 test_lwt_seg6local.sh \
60 test_lirc_mode2.sh \
61 test_skb_cgroup_id.sh \
62 test_flow_dissector.sh \
63 test_xdp_vlan_mode_generic.sh \
64 test_xdp_vlan_mode_native.sh \
65 test_lwt_ip_encap.sh \
66 test_tcp_check_syncookie.sh \
67 test_tc_tunnel.sh \
68 test_tc_edt.sh \
69 test_xdping.sh
70
71TEST_PROGS_EXTENDED := with_addr.sh \
72 with_tunnels.sh \
73 tcp_client.py \
74 tcp_server.py \
75 test_xdp_vlan.sh
76
77# Compile but not part of 'make run_tests'
78TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \
79 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
80 test_lirc_mode2_user
81
82include ../lib.mk
83
84# NOTE: $(OUTPUT) won't get default value if used before lib.mk
85TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
86all: $(TEST_CUSTOM_PROGS)
87
88$(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c
89 $(CC) -o $@ $< -Wl,--build-id
90
91$(OUTPUT)/test_stub.o: test_stub.c
92 $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) -c -o $@ $<
93
94BPFOBJ := $(OUTPUT)/libbpf.a
95
96$(TEST_GEN_PROGS): $(OUTPUT)/test_stub.o $(BPFOBJ)
97
98$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(OUTPUT)/libbpf.a
99
100$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
101$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
102$(OUTPUT)/test_sock: cgroup_helpers.c
103$(OUTPUT)/test_sock_addr: cgroup_helpers.c
104$(OUTPUT)/test_socket_cookie: cgroup_helpers.c
105$(OUTPUT)/test_sockmap: cgroup_helpers.c
106$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
107$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
108$(OUTPUT)/test_progs: trace_helpers.c
109$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
110$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
111$(OUTPUT)/test_netcnt: cgroup_helpers.c
112$(OUTPUT)/test_sock_fields: cgroup_helpers.c
113$(OUTPUT)/test_sysctl: cgroup_helpers.c
114$(OUTPUT)/test_cgroup_attach: cgroup_helpers.c
115$(OUTPUT)/test_sockopt: cgroup_helpers.c
116$(OUTPUT)/test_sockopt_sk: cgroup_helpers.c
117$(OUTPUT)/test_sockopt_multi: cgroup_helpers.c
118$(OUTPUT)/test_tcp_rtt: cgroup_helpers.c
119
120.PHONY: force
121
122# force a rebuild of BPFOBJ when its dependencies are updated
123force:
124
125$(BPFOBJ): force
126 $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
127
128PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
129
130# Let newer LLVM versions transparently probe the kernel for availability
131# of full BPF instruction set.
132ifeq ($(PROBE),)
133 CPU ?= probe
134else
135 CPU ?= generic
136endif
137
138# Get Clang's default includes on this system, as opposed to those seen by
139# '-target bpf'. This fixes "missing" files on some architectures/distros,
140# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
141#
142# Use '-idirafter': Don't interfere with include mechanics except where the
143# build would have failed anyways.
144CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \
145 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
146
147CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
148 $(CLANG_SYS_INCLUDES) \
149 -Wno-compare-distinct-pointer-types \
150 -D__TARGET_ARCH_$(SRCARCH)
151
152$(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
153$(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
154
155$(OUTPUT)/test_queue_map.o: test_queue_stack_map.h
156$(OUTPUT)/test_stack_map.o: test_queue_stack_map.h
157
158$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
159$(OUTPUT)/test_progs.o: flow_dissector_load.h
160
161BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
162BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
163BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
164BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \
165 $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \
166 $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \
167 /bin/rm -f ./llvm_btf_verify.o)
168
169ifneq ($(BTF_LLVM_PROBE),)
170 CLANG_FLAGS += -g
171else
172ifneq ($(BTF_LLC_PROBE),)
173ifneq ($(BTF_PAHOLE_PROBE),)
174ifneq ($(BTF_OBJCOPY_PROBE),)
175 CLANG_FLAGS += -g
176 LLC_FLAGS += -mattr=dwarfris
177 DWARF2BTF = y
178endif
179endif
180endif
181endif
182
183TEST_PROGS_CFLAGS := -I. -I$(OUTPUT)
184TEST_MAPS_CFLAGS := -I. -I$(OUTPUT)
185TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier
186
187ifneq ($(SUBREG_CODEGEN),)
188ALU32_BUILD_DIR = $(OUTPUT)/alu32
189TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32
190$(ALU32_BUILD_DIR):
191 mkdir -p $@
192
193$(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read | $(ALU32_BUILD_DIR)
194 cp $< $@
195
196$(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(OUTPUT)/libbpf.a\
197 $(ALU32_BUILD_DIR)/urandom_read \
198 | $(ALU32_BUILD_DIR)
199 $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) \
200 -o $(ALU32_BUILD_DIR)/test_progs_32 \
201 test_progs.c test_stub.c trace_helpers.c prog_tests/*.c \
202 $(OUTPUT)/libbpf.a $(LDLIBS)
203
204$(ALU32_BUILD_DIR)/test_progs_32: $(PROG_TESTS_H)
205$(ALU32_BUILD_DIR)/test_progs_32: prog_tests/*.c
206
207$(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR)/test_progs_32 \
208 | $(ALU32_BUILD_DIR)
209 ($(CLANG) $(CLANG_FLAGS) -O2 -target bpf -emit-llvm -c $< -o - || \
210 echo "clang failed") | \
211 $(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \
212 -filetype=obj -o $@
213ifeq ($(DWARF2BTF),y)
214 $(BTF_PAHOLE) -J $@
215endif
216endif
217
218# Have one program compiled without "-target bpf" to test whether libbpf loads
219# it successfully
220$(OUTPUT)/test_xdp.o: progs/test_xdp.c
221 ($(CLANG) $(CLANG_FLAGS) -O2 -emit-llvm -c $< -o - || \
222 echo "clang failed") | \
223 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
224ifeq ($(DWARF2BTF),y)
225 $(BTF_PAHOLE) -J $@
226endif
227
228$(OUTPUT)/%.o: progs/%.c
229 ($(CLANG) $(CLANG_FLAGS) -O2 -target bpf -emit-llvm -c $< -o - || \
230 echo "clang failed") | \
231 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
232ifeq ($(DWARF2BTF),y)
233 $(BTF_PAHOLE) -J $@
234endif
235
236PROG_TESTS_DIR = $(OUTPUT)/prog_tests
237$(PROG_TESTS_DIR):
238 mkdir -p $@
239PROG_TESTS_H := $(PROG_TESTS_DIR)/tests.h
240PROG_TESTS_FILES := $(wildcard prog_tests/*.c)
241test_progs.c: $(PROG_TESTS_H)
242$(OUTPUT)/test_progs: CFLAGS += $(TEST_PROGS_CFLAGS)
243$(OUTPUT)/test_progs: test_progs.c $(PROG_TESTS_H) $(PROG_TESTS_FILES)
244$(PROG_TESTS_H): $(PROG_TESTS_FILES) | $(PROG_TESTS_DIR)
245 $(shell ( cd prog_tests/; \
246 echo '/* Generated header, do not edit */'; \
247 echo '#ifdef DECLARE'; \
248 ls *.c 2> /dev/null | \
249 sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \
250 echo '#endif'; \
251 echo '#ifdef CALL'; \
252 ls *.c 2> /dev/null | \
253 sed -e 's@\([^\.]*\)\.c@test_\1();@'; \
254 echo '#endif' \
255 ) > $(PROG_TESTS_H))
256
257MAP_TESTS_DIR = $(OUTPUT)/map_tests
258$(MAP_TESTS_DIR):
259 mkdir -p $@
260MAP_TESTS_H := $(MAP_TESTS_DIR)/tests.h
261MAP_TESTS_FILES := $(wildcard map_tests/*.c)
262test_maps.c: $(MAP_TESTS_H)
263$(OUTPUT)/test_maps: CFLAGS += $(TEST_MAPS_CFLAGS)
264$(OUTPUT)/test_maps: test_maps.c $(MAP_TESTS_H) $(MAP_TESTS_FILES)
265$(MAP_TESTS_H): $(MAP_TESTS_FILES) | $(MAP_TESTS_DIR)
266 $(shell ( cd map_tests/; \
267 echo '/* Generated header, do not edit */'; \
268 echo '#ifdef DECLARE'; \
269 ls *.c 2> /dev/null | \
270 sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \
271 echo '#endif'; \
272 echo '#ifdef CALL'; \
273 ls *.c 2> /dev/null | \
274 sed -e 's@\([^\.]*\)\.c@test_\1();@'; \
275 echo '#endif' \
276 ) > $(MAP_TESTS_H))
277
278VERIFIER_TESTS_DIR = $(OUTPUT)/verifier
279$(VERIFIER_TESTS_DIR):
280 mkdir -p $@
281VERIFIER_TESTS_H := $(VERIFIER_TESTS_DIR)/tests.h
282VERIFIER_TEST_FILES := $(wildcard verifier/*.c)
283test_verifier.c: $(VERIFIER_TESTS_H)
284$(OUTPUT)/test_verifier: CFLAGS += $(TEST_VERIFIER_CFLAGS)
285$(OUTPUT)/test_verifier: test_verifier.c $(VERIFIER_TESTS_H)
286$(VERIFIER_TESTS_H): $(VERIFIER_TEST_FILES) | $(VERIFIER_TESTS_DIR)
287 $(shell ( cd verifier/; \
288 echo '/* Generated header, do not edit */'; \
289 echo '#ifdef FILL_ARRAY'; \
290 ls *.c 2> /dev/null | \
291 sed -e 's@\(.*\)@#include \"\1\"@'; \
292 echo '#endif' \
293 ) > $(VERIFIER_TESTS_H))
294
295EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) \
296 $(VERIFIER_TESTS_H) $(PROG_TESTS_H) $(MAP_TESTS_H) \
297 feature