tools/testing/selftests/bpf/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2
   3 LIBDIR := ../../../lib
   4 BPFDIR := $(LIBDIR)/bpf
   5 APIDIR := ../../../include/uapi
   6 GENDIR := ../../../../include/generated
   7 GENHDR := $(GENDIR)/autoconf.h
   8
   9 ifneq ($(wildcard $(GENHDR)),)
  10   GENFLAGS := -DHAVE_GENHDR
  11 endif
  12
  13 CLANG           ?= clang
  14 LLC             ?= llc
  15 LLVM_OBJCOPY    ?= llvm-objcopy
  16 LLVM_READELF    ?= llvm-readelf
  17 BTF_PAHOLE      ?= pahole
  18 CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include
  19 LDLIBS += -lcap -lelf -lrt -lpthread
  20
  21 # Order correspond to 'make run_tests' order
  22 TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
  23         test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \
  24         test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \
  25         test_cgroup_storage test_select_reuseport test_section_names \
  26         test_netcnt test_tcpnotify_user test_sock_fields test_sysctl
  27
  28 BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c)))
  29 TEST_GEN_FILES = $(BPF_OBJ_FILES)
  30
  31 # Also test sub-register code-gen if LLVM has eBPF v3 processor support which
  32 # contains both ALU32 and JMP32 instructions.
  33 SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \
  34                         $(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \
  35                         $(LLC) -mattr=+alu32 -mcpu=v3 2>&1 | \
  36                         grep 'if w')
  37 ifneq ($(SUBREG_CODEGEN),)
  38 TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES))
  39 endif
  40
  41 # Order correspond to 'make run_tests' order
  42 TEST_PROGS := test_kmod.sh \
  43         test_libbpf.sh \
  44         test_xdp_redirect.sh \
  45         test_xdp_meta.sh \
  46         test_offload.py \
  47         test_sock_addr.sh \
  48         test_tunnel.sh \
  49         test_lwt_seg6local.sh \
  50         test_lirc_mode2.sh \
  51         test_skb_cgroup_id.sh \
  52         test_flow_dissector.sh \
  53         test_xdp_vlan.sh \
  54         test_lwt_ip_encap.sh \
  55         test_tcp_check_syncookie.sh \
  56         test_tc_tunnel.sh \
  57         test_tc_edt.sh
  58
  59 TEST_PROGS_EXTENDED := with_addr.sh \
  60         with_tunnels.sh \
  61         tcp_client.py \
  62         tcp_server.py
  63
  64 # Compile but not part of 'make run_tests'
  65 TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \
  66         flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
  67         test_lirc_mode2_user
  68
  69 include ../lib.mk
  70
  71 # NOTE: $(OUTPUT) won't get default value if used before lib.mk
  72 TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
  73 all: $(TEST_CUSTOM_PROGS)
  74
  75 $(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c
  76         $(CC) -o $@ $< -Wl,--build-id
  77
  78 $(OUTPUT)/test_maps: map_tests/*.c
  79
  80 BPFOBJ := $(OUTPUT)/libbpf.a
  81
  82 $(TEST_GEN_PROGS): $(BPFOBJ)
  83
  84 $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a
  85
  86 $(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
  87 $(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
  88 $(OUTPUT)/test_sock: cgroup_helpers.c
  89 $(OUTPUT)/test_sock_addr: cgroup_helpers.c
  90 $(OUTPUT)/test_socket_cookie: cgroup_helpers.c
  91 $(OUTPUT)/test_sockmap: cgroup_helpers.c
  92 $(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
  93 $(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
  94 $(OUTPUT)/test_progs: trace_helpers.c
  95 $(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
  96 $(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
  97 $(OUTPUT)/test_netcnt: cgroup_helpers.c
  98 $(OUTPUT)/test_sock_fields: cgroup_helpers.c
  99 $(OUTPUT)/test_sysctl: cgroup_helpers.c
 100
 101 .PHONY: force
 102
 103 # force a rebuild of BPFOBJ when its dependencies are updated
 104 force:
 105
 106 $(BPFOBJ): force
 107         $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
 108
 109 PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
 110
 111 # Let newer LLVM versions transparently probe the kernel for availability
 112 # of full BPF instruction set.
 113 ifeq ($(PROBE),)
 114   CPU ?= probe
 115 else
 116   CPU ?= generic
 117 endif
 118
 119 # Get Clang's default includes on this system, as opposed to those seen by
 120 # '-target bpf'. This fixes "missing" files on some architectures/distros,
 121 # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
 122 #
 123 # Use '-idirafter': Don't interfere with include mechanics except where the
 124 # build would have failed anyways.
 125 CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \
 126         | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
 127
 128 CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
 129               $(CLANG_SYS_INCLUDES) \
 130               -Wno-compare-distinct-pointer-types
 131
 132 $(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
 133 $(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
 134
 135 $(OUTPUT)/test_queue_map.o: test_queue_stack_map.h
 136 $(OUTPUT)/test_stack_map.o: test_queue_stack_map.h
 137
 138 $(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
 139 $(OUTPUT)/test_progs.o: flow_dissector_load.h
 140
 141 BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
 142 BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
 143 BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
 144 BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \
 145                           $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \
 146                           $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \
 147                           /bin/rm -f ./llvm_btf_verify.o)
 148
 149 ifneq ($(BTF_LLVM_PROBE),)
 150         CLANG_FLAGS += -g
 151 else
 152 ifneq ($(BTF_LLC_PROBE),)
 153 ifneq ($(BTF_PAHOLE_PROBE),)
 154 ifneq ($(BTF_OBJCOPY_PROBE),)
 155         CLANG_FLAGS += -g
 156         LLC_FLAGS += -mattr=dwarfris
 157         DWARF2BTF = y
 158 endif
 159 endif
 160 endif
 161 endif
 162
 163 TEST_PROGS_CFLAGS := -I. -I$(OUTPUT)
 164 TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier
 165
 166 ifneq ($(SUBREG_CODEGEN),)
 167 ALU32_BUILD_DIR = $(OUTPUT)/alu32
 168 TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32
 169 $(ALU32_BUILD_DIR):
 170         mkdir -p $@
 171
 172 $(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read
 173         cp $< $@
 174
 175 $(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(OUTPUT)/libbpf.a\
 176                                                 $(ALU32_BUILD_DIR) \
 177                                                 $(ALU32_BUILD_DIR)/urandom_read
 178         $(CC) $(TEST_PROGS_CFLAGS) $(CFLAGS) \
 179                 -o $(ALU32_BUILD_DIR)/test_progs_32 \
 180                 test_progs.c trace_helpers.c prog_tests/*.c \
 181                 $(OUTPUT)/libbpf.a $(LDLIBS)
 182
 183 $(ALU32_BUILD_DIR)/test_progs_32: $(PROG_TESTS_H)
 184 $(ALU32_BUILD_DIR)/test_progs_32: prog_tests/*.c
 185
 186 $(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR) \
 187                                         $(ALU32_BUILD_DIR)/test_progs_32
 188         $(CLANG) $(CLANG_FLAGS) \
 189                  -O2 -target bpf -emit-llvm -c $< -o - |      \
 190         $(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \
 191                 -filetype=obj -o $@
 192 ifeq ($(DWARF2BTF),y)
 193         $(BTF_PAHOLE) -J $@
 194 endif
 195 endif
 196
 197 # Have one program compiled without "-target bpf" to test whether libbpf loads
 198 # it successfully
 199 $(OUTPUT)/test_xdp.o: progs/test_xdp.c
 200         $(CLANG) $(CLANG_FLAGS) \
 201                 -O2 -emit-llvm -c $< -o - | \
 202         $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
 203 ifeq ($(DWARF2BTF),y)
 204         $(BTF_PAHOLE) -J $@
 205 endif
 206
 207 $(OUTPUT)/%.o: progs/%.c
 208         $(CLANG) $(CLANG_FLAGS) \
 209                  -O2 -target bpf -emit-llvm -c $< -o - |      \
 210         $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
 211 ifeq ($(DWARF2BTF),y)
 212         $(BTF_PAHOLE) -J $@
 213 endif
 214
 215 PROG_TESTS_H := $(OUTPUT)/prog_tests/tests.h
 216 test_progs.c: $(PROG_TESTS_H)
 217 $(OUTPUT)/test_progs: CFLAGS += $(TEST_PROGS_CFLAGS)
 218 $(OUTPUT)/test_progs: prog_tests/*.c
 219
 220 PROG_TESTS_DIR = $(OUTPUT)/prog_tests
 221 $(PROG_TESTS_DIR):
 222         mkdir -p $@
 223
 224 PROG_TESTS_FILES := $(wildcard prog_tests/*.c)
 225 $(PROG_TESTS_H): $(PROG_TESTS_DIR) $(PROG_TESTS_FILES)
 226         $(shell ( cd prog_tests/; \
 227                   echo '/* Generated header, do not edit */'; \
 228                   echo '#ifdef DECLARE'; \
 229                   ls *.c 2> /dev/null | \
 230                         sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \
 231                   echo '#endif'; \
 232                   echo '#ifdef CALL'; \
 233                   ls *.c 2> /dev/null | \
 234                         sed -e 's@\([^\.]*\)\.c@test_\1();@'; \
 235                   echo '#endif' \
 236                  ) > $(PROG_TESTS_H))
 237
 238 TEST_MAPS_CFLAGS := -I. -I$(OUTPUT)
 239 MAP_TESTS_DIR = $(OUTPUT)/map_tests
 240 $(MAP_TESTS_DIR):
 241         mkdir -p $@
 242 MAP_TESTS_H := $(MAP_TESTS_DIR)/tests.h
 243 test_maps.c: $(MAP_TESTS_H)
 244 $(OUTPUT)/test_maps: CFLAGS += $(TEST_MAPS_CFLAGS)
 245 MAP_TESTS_FILES := $(wildcard map_tests/*.c)
 246 $(MAP_TESTS_H): $(MAP_TESTS_DIR) $(MAP_TESTS_FILES)
 247         $(shell ( cd map_tests/; \
 248                   echo '/* Generated header, do not edit */'; \
 249                   echo '#ifdef DECLARE'; \
 250                   ls *.c 2> /dev/null | \
 251                         sed -e 's@\([^\.]*\)\.c@extern void test_\1(void);@'; \
 252                   echo '#endif'; \
 253                   echo '#ifdef CALL'; \
 254                   ls *.c 2> /dev/null | \
 255                         sed -e 's@\([^\.]*\)\.c@test_\1();@'; \
 256                   echo '#endif' \
 257                  ) > $(MAP_TESTS_H))
 258
 259 VERIFIER_TESTS_H := $(OUTPUT)/verifier/tests.h
 260 test_verifier.c: $(VERIFIER_TESTS_H)
 261 $(OUTPUT)/test_verifier: CFLAGS += $(TEST_VERIFIER_CFLAGS)
 262
 263 VERIFIER_TESTS_DIR = $(OUTPUT)/verifier
 264 $(VERIFIER_TESTS_DIR):
 265         mkdir -p $@
 266
 267 VERIFIER_TEST_FILES := $(wildcard verifier/*.c)
 268 $(OUTPUT)/verifier/tests.h: $(VERIFIER_TESTS_DIR) $(VERIFIER_TEST_FILES)
 269         $(shell ( cd verifier/; \
 270                   echo '/* Generated header, do not edit */'; \
 271                   echo '#ifdef FILL_ARRAY'; \
 272                   ls *.c 2> /dev/null | \
 273                         sed -e 's@\(.*\)@#include \"\1\"@'; \
 274                   echo '#endif' \
 275                  ) > $(VERIFIER_TESTS_H))
 276
 277 EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) \
 278         $(VERIFIER_TESTS_H) $(PROG_TESTS_H) $(MAP_TESTS_H)