tools/testing/selftests/bpf/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 include ../../../../scripts/Kbuild.include
   3 include ../../../scripts/Makefile.arch
   4
   5 LIBDIR := ../../../lib
   6 BPFDIR := $(LIBDIR)/bpf
   7 APIDIR := ../../../include/uapi
   8 GENDIR := ../../../../include/generated
   9 GENHDR := $(GENDIR)/autoconf.h
  10
  11 ifneq ($(wildcard $(GENHDR)),)
  12   GENFLAGS := -DHAVE_GENHDR
  13 endif
  14
  15 CLANG           ?= clang
  16 LLC             ?= llc
  17 LLVM_OBJCOPY    ?= llvm-objcopy
  18 LLVM_READELF    ?= llvm-readelf
  19 BTF_PAHOLE      ?= pahole
  20 CFLAGS += -g -Wall -O2 -I$(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
  23 LDLIBS += -lcap -lelf -lrt -lpthread
  24
  25 # Order correspond to 'make run_tests' order
  26 TEST_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
  34 BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c)))
  35 TEST_GEN_FILES = $(BPF_OBJ_FILES)
  36
  37 # Also test sub-register code-gen if LLVM has eBPF v3 processor support which
  38 # contains both ALU32 and JMP32 instructions.
  39 SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \
  40                         $(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \
  41                         $(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \
  42                         grep 'if w')
  43 ifneq ($(SUBREG_CODEGEN),)
  44 TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES))
  45 endif
  46
  47 # Order correspond to 'make run_tests' order
  48 TEST_PROGS := test_kmod.sh \
  49         test_libbpf.sh \
  50         test_xdp_redirect.sh \
  51         test_xdp_meta.sh \
  52         test_xdp_veth.sh \
  53         test_offload.py \
  54         test_sock_addr.sh \
  55         test_tunnel.sh \
  56         test_lwt_seg6local.sh \
  57         test_lirc_mode2.sh \
  58         test_skb_cgroup_id.sh \
  59         test_flow_dissector.sh \
  60         test_xdp_vlan.sh \
  61         test_lwt_ip_encap.sh \
  62         test_tcp_check_syncookie.sh \
  63         test_tc_tunnel.sh \
  64         test_tc_edt.sh \
  65         test_xdping.sh
  66
  67 TEST_PROGS_EXTENDED := with_addr.sh \
  68         with_tunnels.sh \
  69         tcp_client.py \
  70         tcp_server.py
  71
  72 # Compile but not part of 'make run_tests'
  73 TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \
  74         flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
  75         test_lirc_mode2_user
  76
  77 include ../lib.mk
  78
  79 # NOTE: $(OUTPUT) won't get default value if used before lib.mk
  80 TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
  81 all: $(TEST_CUSTOM_PROGS)
  82
  83 $(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c
  84         $(CC) -o $@ $< -Wl,--build-id
  85
  86 $(OUTPUT)/test_maps: map_tests/*.c
  87
  88 BPFOBJ := $(OUTPUT)/libbpf.a
  89
  90 $(TEST_GEN_PROGS): test_stub.o $(BPFOBJ)
  91
  92 $(TEST_GEN_PROGS_EXTENDED): test_stub.o $(OUTPUT)/libbpf.a
  93
  94 $(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
  95 $(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
  96 $(OUTPUT)/test_sock: cgroup_helpers.c
  97 $(OUTPUT)/test_sock_addr: cgroup_helpers.c
  98 $(OUTPUT)/test_socket_cookie: cgroup_helpers.c
  99 $(OUTPUT)/test_sockmap: cgroup_helpers.c
 100 $(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
 101 $(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
 102 $(OUTPUT)/test_progs: trace_helpers.c
 103 $(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
 104 $(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
 105 $(OUTPUT)/test_netcnt: cgroup_helpers.c
 106 $(OUTPUT)/test_sock_fields: cgroup_helpers.c
 107 $(OUTPUT)/test_sysctl: cgroup_helpers.c
 108 $(OUTPUT)/test_cgroup_attach: cgroup_helpers.c
 109 $(OUTPUT)/test_sockopt: cgroup_helpers.c
 110 $(OUTPUT)/test_sockopt_sk: cgroup_helpers.c
 111 $(OUTPUT)/test_sockopt_multi: cgroup_helpers.c
 112 $(OUTPUT)/test_tcp_rtt: cgroup_helpers.c
 113
 114 .PHONY: force
 115
 116 # force a rebuild of BPFOBJ when its dependencies are updated
 117 force:
 118
 119 $(BPFOBJ): force
 120         $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
 121
 122 PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
 123
 124 # Let newer LLVM versions transparently probe the kernel for availability
 125 # of full BPF instruction set.
 126 ifeq ($(PROBE),)
 127   CPU ?= probe
 128 else
 129   CPU ?= generic
 130 endif
 131
 132 # Get Clang's default includes on this system, as opposed to those seen by
 133 # '-target bpf'. This fixes "missing" files on some architectures/distros,
 134 # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
 135 #
 136 # Use '-idirafter': Don't interfere with include mechanics except where the
 137 # build would have failed anyways.
 138 CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \
 139         | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
 140
 141 CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
 142               $(CLANG_SYS_INCLUDES) \
 143               -Wno-compare-distinct-pointer-types \
 144               -D__TARGET_ARCH_$(SRCARCH)
 145
 146 $(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
 147 $(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
 148
 149 $(OUTPUT)/test_queue_map.o: test_queue_stack_map.h
 150 $(OUTPUT)/test_stack_map.o: test_queue_stack_map.h
 151
 152 $(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
 153 $(OUTPUT)/test_progs.o: flow_dissector_load.h
 154
 155 BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
 156 BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
 157 BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
 158 BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \
 159                           $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \
 160                           $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \
 161                           /bin/rm -f ./llvm_btf_verify.o)
 162
 163 ifneq ($(BTF_LLVM_PROBE),)
 164         CLANG_FLAGS += -g
 165 else
 166 ifneq ($(BTF_LLC_PROBE),)
 167 ifneq ($(BTF_PAHOLE_PROBE),)
 168 ifneq ($(BTF_OBJCOPY_PROBE),)
 169         CLANG_FLAGS += -g
 170         LLC_FLAGS += -mattr=dwarfris
 171         DWARF2BTF = y
 172 endif
 173 endif
 174 endif
 175 endif
 176
 177 TEST_PROGS_CFLAGS := -I. -I$(OUTPUT)
 178 TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier
 179
 180 ifneq ($(SUBREG_CODEGEN),)
 181 ALU32_BUILD_DIR = $(OUTPUT)/alu32
 182 TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32
 183 $(ALU32_BUILD_DIR):
 184         mkdir -p $@
 185
 186 $(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read
 187         cp $< $@
 188
 189 $(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(OUTPUT)/libbpf.a\
 190                                                 $(ALU32_BUILD_DIR) \
 191                                                 $(ALU32_BUILD_DIR)/urandom_read
 192         $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) \
 193                 -o $(ALU32_BUILD_DIR)/test_progs_32 \
 194                 test_progs.c test_stub.c trace_helpers.c prog_tests/*.c \
 195                 $(OUTPUT)/libbpf.a $(LDLIBS)
 196
 197 $(ALU32_BUILD_DIR)/test_progs_32: $(PROG_TESTS_H)
 198 $(ALU32_BUILD_DIR)/test_progs_32: prog_tests/*.c
 199
 200 $(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR) \
 201                                         $(ALU32_BUILD_DIR)/test_progs_32
 202         ($(CLANG) $(CLANG_FLAGS) -O2 -target bpf -emit-llvm -c $< -o - || \
 203                 echo "clang failed") | \
 204         $(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \
 205                 -filetype=obj -o $@
 206 ifeq ($(DWARF2BTF),y)
 207         $(BTF_PAHOLE) -J $@
 208 endif
 209 endif
 210
 211 # Have one program compiled without "-target bpf" to test whether libbpf loads
 212 # it successfully
 213 $(OUTPUT)/test_xdp.o: progs/test_xdp.c
 214         ($(CLANG) $(CLANG_FLAGS) -O2 -emit-llvm -c $< -o - || \
 215                 echo "clang failed") | \
 216         $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
 217 ifeq ($(DWARF2BTF),y)
 218         $(BTF_PAHOLE) -J $@
 219 endif
 220
 221 $(OUTPUT)/%.o: progs/%.c
 222         ($(CLANG) $(CLANG_FLAGS) -O2 -target bpf -emit-llvm -c $< -o - || \
 223                 echo "clang failed") | \
 224         $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
 225 ifeq ($(DWARF2BTF),y)
 226         $(BTF_PAHOLE) -J $@
 227 endif
 228
 229 PROG_TESTS_H := $(OUTPUT)/prog_tests/tests.h
 230 test_progs.c: $(PROG_TESTS_H)
 231 $(OUTPUT)/test_progs: CFLAGS += $(TEST_PROGS_CFLAGS)
 232 $(OUTPUT)/test_progs: prog_tests/*.c
 233
 234 PROG_TESTS_DIR = $(OUTPUT)/prog_tests
 235 $(PROG_TESTS_DIR):
 236         mkdir -p $@
 237
 238 PROG_TESTS_FILES := $(wildcard prog_tests/*.c)
 239 $(PROG_TESTS_H): $(PROG_TESTS_DIR) $(PROG_TESTS_FILES)
 240         $(shell ( cd prog_tests/; \
 241                   echo '/* Generated header, do not edit */'; \
 242                   echo '#ifdef DECLARE'; \
 243                   ls *.c 2> /dev/null | \
 244                         sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \
 245                   echo '#endif'; \
 246                   echo '#ifdef CALL'; \
 247                   ls *.c 2> /dev/null | \
 248                         sed -e 's@\([^\.]*\)\.c@test_\1();@'; \
 249                   echo '#endif' \
 250                  ) > $(PROG_TESTS_H))
 251
 252 TEST_MAPS_CFLAGS := -I. -I$(OUTPUT)
 253 MAP_TESTS_DIR = $(OUTPUT)/map_tests
 254 $(MAP_TESTS_DIR):
 255         mkdir -p $@
 256 MAP_TESTS_H := $(MAP_TESTS_DIR)/tests.h
 257 test_maps.c: $(MAP_TESTS_H)
 258 $(OUTPUT)/test_maps: CFLAGS += $(TEST_MAPS_CFLAGS)
 259 MAP_TESTS_FILES := $(wildcard map_tests/*.c)
 260 $(MAP_TESTS_H): $(MAP_TESTS_DIR) $(MAP_TESTS_FILES)
 261         $(shell ( cd map_tests/; \
 262                   echo '/* Generated header, do not edit */'; \
 263                   echo '#ifdef DECLARE'; \
 264                   ls *.c 2> /dev/null | \
 265                         sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \
 266                   echo '#endif'; \
 267                   echo '#ifdef CALL'; \
 268                   ls *.c 2> /dev/null | \
 269                         sed -e 's@\([^\.]*\)\.c@test_\1();@'; \
 270                   echo '#endif' \
 271                  ) > $(MAP_TESTS_H))
 272
 273 VERIFIER_TESTS_H := $(OUTPUT)/verifier/tests.h
 274 test_verifier.c: $(VERIFIER_TESTS_H)
 275 $(OUTPUT)/test_verifier: CFLAGS += $(TEST_VERIFIER_CFLAGS)
 276
 277 VERIFIER_TESTS_DIR = $(OUTPUT)/verifier
 278 $(VERIFIER_TESTS_DIR):
 279         mkdir -p $@
 280
 281 VERIFIER_TEST_FILES := $(wildcard verifier/*.c)
 282 $(OUTPUT)/verifier/tests.h: $(VERIFIER_TESTS_DIR) $(VERIFIER_TEST_FILES)
 283         $(shell ( cd verifier/; \
 284                   echo '/* Generated header, do not edit */'; \
 285                   echo '#ifdef FILL_ARRAY'; \
 286                   ls *.c 2> /dev/null | \
 287                         sed -e 's@\(.*\)@#include \"\1\"@'; \
 288                   echo '#endif' \
 289                  ) > $(VERIFIER_TESTS_H))
 290
 291 EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) \
 292         $(VERIFIER_TESTS_H) $(PROG_TESTS_H) $(MAP_TESTS_H) \
 293         feature