LXR linux/tools/testing/selftests/bpf/Makefile

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