tools/testing/selftests/bpf/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 include ../../../../scripts/Kbuild.include
   3
   4 LIBDIR := ../../../lib
   5 BPFDIR := $(LIBDIR)/bpf
   6 APIDIR := ../../../include/uapi
   7 GENDIR := ../../../../include/generated
   8 GENHDR := $(GENDIR)/autoconf.h
   9
  10 ifneq ($(wildcard $(GENHDR)),)
  11   GENFLAGS := -DHAVE_GENHDR
  12 endif
  13
  14 CLANG           ?= clang
  15 LLC             ?= llc
  16 LLVM_OBJCOPY    ?= llvm-objcopy
  17 LLVM_READELF    ?= llvm-readelf
  18 BTF_PAHOLE      ?= pahole
  19 CFLAGS += -g -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include \
  20           -Dbpf_prog_load=bpf_prog_test_load \
  21           -Dbpf_load_program=bpf_test_load_program
  22 LDLIBS += -lcap -lelf -lrt -lpthread
  23
  24 # Order correspond to 'make run_tests' order
  25 TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
  26         test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \
  27         test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \
  28         test_cgroup_storage test_select_reuseport test_section_names \
  29         test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \
  30         test_btf_dump test_cgroup_attach xdping test_sockopt test_sockopt_sk \
  31         test_sockopt_multi test_tcp_rtt
  32
  33 BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c)))
  34 TEST_GEN_FILES = $(BPF_OBJ_FILES)
  35
  36 # Also test sub-register code-gen if LLVM has eBPF v3 processor support which
  37 # contains both ALU32 and JMP32 instructions.
  38 SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \
  39                         $(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \
  40                         $(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \
  41                         grep 'if w')
  42 ifneq ($(SUBREG_CODEGEN),)
  43 TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES))
  44 endif
  45
  46 # Order correspond to 'make run_tests' order
  47 TEST_PROGS := test_kmod.sh \
  48         test_libbpf.sh \
  49         test_xdp_redirect.sh \
  50         test_xdp_meta.sh \
  51         test_xdp_veth.sh \
  52         test_offload.py \
  53         test_sock_addr.sh \
  54         test_tunnel.sh \
  55         test_lwt_seg6local.sh \
  56         test_lirc_mode2.sh \
  57         test_skb_cgroup_id.sh \
  58         test_flow_dissector.sh \
  59         test_xdp_vlan.sh \
  60         test_lwt_ip_encap.sh \
  61         test_tcp_check_syncookie.sh \
  62         test_tc_tunnel.sh \
  63         test_tc_edt.sh \
  64         test_xdping.sh
  65
  66 TEST_PROGS_EXTENDED := with_addr.sh \
  67         with_tunnels.sh \
  68         tcp_client.py \
  69         tcp_server.py
  70
  71 # Compile but not part of 'make run_tests'
  72 TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \
  73         flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
  74         test_lirc_mode2_user
  75
  76 include ../lib.mk
  77
  78 # NOTE: $(OUTPUT) won't get default value if used before lib.mk
  79 TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
  80 all: $(TEST_CUSTOM_PROGS)
  81
  82 $(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c
  83         $(CC) -o $@ $< -Wl,--build-id
  84
  85 $(OUTPUT)/test_maps: map_tests/*.c
  86
  87 BPFOBJ := $(OUTPUT)/libbpf.a
  88
  89 $(TEST_GEN_PROGS): test_stub.o $(BPFOBJ)
  90
  91 $(TEST_GEN_PROGS_EXTENDED): test_stub.o $(OUTPUT)/libbpf.a
  92
  93 $(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
  94 $(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
  95 $(OUTPUT)/test_sock: cgroup_helpers.c
  96 $(OUTPUT)/test_sock_addr: cgroup_helpers.c
  97 $(OUTPUT)/test_socket_cookie: cgroup_helpers.c
  98 $(OUTPUT)/test_sockmap: cgroup_helpers.c
  99 $(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
 100 $(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
 101 $(OUTPUT)/test_progs: trace_helpers.c
 102 $(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
 103 $(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
 104 $(OUTPUT)/test_netcnt: cgroup_helpers.c
 105 $(OUTPUT)/test_sock_fields: cgroup_helpers.c
 106 $(OUTPUT)/test_sysctl: cgroup_helpers.c
 107 $(OUTPUT)/test_cgroup_attach: cgroup_helpers.c
 108 $(OUTPUT)/test_sockopt: cgroup_helpers.c
 109 $(OUTPUT)/test_sockopt_sk: cgroup_helpers.c
 110 $(OUTPUT)/test_sockopt_multi: cgroup_helpers.c
 111 $(OUTPUT)/test_tcp_rtt: cgroup_helpers.c
 112
 113 .PHONY: force
 114
 115 # force a rebuild of BPFOBJ when its dependencies are updated
 116 force:
 117
 118 $(BPFOBJ): force
 119         $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
 120
 121 PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
 122
 123 # Let newer LLVM versions transparently probe the kernel for availability
 124 # of full BPF instruction set.
 125 ifeq ($(PROBE),)
 126   CPU ?= probe
 127 else
 128   CPU ?= generic
 129 endif
 130
 131 # Get Clang's default includes on this system, as opposed to those seen by
 132 # '-target bpf'. This fixes "missing" files on some architectures/distros,
 133 # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
 134 #
 135 # Use '-idirafter': Don't interfere with include mechanics except where the
 136 # build would have failed anyways.
 137 CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \
 138         | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
 139
 140 CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
 141               $(CLANG_SYS_INCLUDES) \
 142               -Wno-compare-distinct-pointer-types
 143
 144 $(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
 145 $(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
 146
 147 $(OUTPUT)/test_queue_map.o: test_queue_stack_map.h
 148 $(OUTPUT)/test_stack_map.o: test_queue_stack_map.h
 149
 150 $(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
 151 $(OUTPUT)/test_progs.o: flow_dissector_load.h
 152
 153 BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
 154 BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
 155 BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
 156 BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \
 157                           $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \
 158                           $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \
 159                           /bin/rm -f ./llvm_btf_verify.o)
 160
 161 ifneq ($(BTF_LLVM_PROBE),)
 162         CLANG_FLAGS += -g
 163 else
 164 ifneq ($(BTF_LLC_PROBE),)
 165 ifneq ($(BTF_PAHOLE_PROBE),)
 166 ifneq ($(BTF_OBJCOPY_PROBE),)
 167         CLANG_FLAGS += -g
 168         LLC_FLAGS += -mattr=dwarfris
 169         DWARF2BTF = y
 170 endif
 171 endif
 172 endif
 173 endif
 174
 175 TEST_PROGS_CFLAGS := -I. -I$(OUTPUT)
 176 TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier
 177
 178 ifneq ($(SUBREG_CODEGEN),)
 179 ALU32_BUILD_DIR = $(OUTPUT)/alu32
 180 TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32
 181 $(ALU32_BUILD_DIR):
 182         mkdir -p $@
 183
 184 $(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read
 185         cp $< $@
 186
 187 $(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(OUTPUT)/libbpf.a\
 188                                                 $(ALU32_BUILD_DIR) \
 189                                                 $(ALU32_BUILD_DIR)/urandom_read
 190         $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) \
 191                 -o $(ALU32_BUILD_DIR)/test_progs_32 \
 192                 test_progs.c test_stub.c trace_helpers.c prog_tests/*.c \
 193                 $(OUTPUT)/libbpf.a $(LDLIBS)
 194
 195 $(ALU32_BUILD_DIR)/test_progs_32: $(PROG_TESTS_H)
 196 $(ALU32_BUILD_DIR)/test_progs_32: prog_tests/*.c
 197
 198 $(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR) \
 199                                         $(ALU32_BUILD_DIR)/test_progs_32
 200         ($(CLANG) $(CLANG_FLAGS) -O2 -target bpf -emit-llvm -c $< -o - || \
 201                 echo "clang failed") | \
 202         $(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \
 203                 -filetype=obj -o $@
 204 ifeq ($(DWARF2BTF),y)
 205         $(BTF_PAHOLE) -J $@
 206 endif
 207 endif
 208
 209 # Have one program compiled without "-target bpf" to test whether libbpf loads
 210 # it successfully
 211 $(OUTPUT)/test_xdp.o: progs/test_xdp.c
 212         ($(CLANG) $(CLANG_FLAGS) -O2 -emit-llvm -c $< -o - || \
 213                 echo "clang failed") | \
 214         $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
 215 ifeq ($(DWARF2BTF),y)
 216         $(BTF_PAHOLE) -J $@
 217 endif
 218
 219 $(OUTPUT)/%.o: progs/%.c
 220         ($(CLANG) $(CLANG_FLAGS) -O2 -target bpf -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 PROG_TESTS_H := $(OUTPUT)/prog_tests/tests.h
 228 test_progs.c: $(PROG_TESTS_H)
 229 $(OUTPUT)/test_progs: CFLAGS += $(TEST_PROGS_CFLAGS)
 230 $(OUTPUT)/test_progs: prog_tests/*.c
 231
 232 PROG_TESTS_DIR = $(OUTPUT)/prog_tests
 233 $(PROG_TESTS_DIR):
 234         mkdir -p $@
 235
 236 PROG_TESTS_FILES := $(wildcard prog_tests/*.c)
 237 $(PROG_TESTS_H): $(PROG_TESTS_DIR) $(PROG_TESTS_FILES)
 238         $(shell ( cd prog_tests/; \
 239                   echo '/* Generated header, do not edit */'; \
 240                   echo '#ifdef DECLARE'; \
 241                   ls *.c 2> /dev/null | \
 242                         sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \
 243                   echo '#endif'; \
 244                   echo '#ifdef CALL'; \
 245                   ls *.c 2> /dev/null | \
 246                         sed -e 's@\([^\.]*\)\.c@test_\1();@'; \
 247                   echo '#endif' \
 248                  ) > $(PROG_TESTS_H))
 249
 250 TEST_MAPS_CFLAGS := -I. -I$(OUTPUT)
 251 MAP_TESTS_DIR = $(OUTPUT)/map_tests
 252 $(MAP_TESTS_DIR):
 253         mkdir -p $@
 254 MAP_TESTS_H := $(MAP_TESTS_DIR)/tests.h
 255 test_maps.c: $(MAP_TESTS_H)
 256 $(OUTPUT)/test_maps: CFLAGS += $(TEST_MAPS_CFLAGS)
 257 MAP_TESTS_FILES := $(wildcard map_tests/*.c)
 258 $(MAP_TESTS_H): $(MAP_TESTS_DIR) $(MAP_TESTS_FILES)
 259         $(shell ( cd map_tests/; \
 260                   echo '/* Generated header, do not edit */'; \
 261                   echo '#ifdef DECLARE'; \
 262                   ls *.c 2> /dev/null | \
 263                         sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \
 264                   echo '#endif'; \
 265                   echo '#ifdef CALL'; \
 266                   ls *.c 2> /dev/null | \
 267                         sed -e 's@\([^\.]*\)\.c@test_\1();@'; \
 268                   echo '#endif' \
 269                  ) > $(MAP_TESTS_H))
 270
 271 VERIFIER_TESTS_H := $(OUTPUT)/verifier/tests.h
 272 test_verifier.c: $(VERIFIER_TESTS_H)
 273 $(OUTPUT)/test_verifier: CFLAGS += $(TEST_VERIFIER_CFLAGS)
 274
 275 VERIFIER_TESTS_DIR = $(OUTPUT)/verifier
 276 $(VERIFIER_TESTS_DIR):
 277         mkdir -p $@
 278
 279 VERIFIER_TEST_FILES := $(wildcard verifier/*.c)
 280 $(OUTPUT)/verifier/tests.h: $(VERIFIER_TESTS_DIR) $(VERIFIER_TEST_FILES)
 281         $(shell ( cd verifier/; \
 282                   echo '/* Generated header, do not edit */'; \
 283                   echo '#ifdef FILL_ARRAY'; \
 284                   ls *.c 2> /dev/null | \
 285                         sed -e 's@\(.*\)@#include \"\1\"@'; \
 286                   echo '#endif' \
 287                  ) > $(VERIFIER_TESTS_H))
 288
 289 EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) \
 290         $(VERIFIER_TESTS_H) $(PROG_TESTS_H) $(MAP_TESTS_H) \
 291         feature