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