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 27 28BPF_OBJ_FILES = \ 29 test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o \ 30 sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o \ 31 test_tcpnotify_kern.o sample_map_ret0.o test_tcpbpf_kern.o \ 32 sockmap_tcp_msg_prog.o connect4_prog.o connect6_prog.o \ 33 test_btf_haskv.o test_btf_nokv.o test_sockmap_kern.o \ 34 test_tunnel_kern.o test_sockhash_kern.o test_lwt_seg6local.o \ 35 sendmsg4_prog.o sendmsg6_prog.o test_lirc_mode2_kern.o \ 36 get_cgroup_id_kern.o socket_cookie_prog.o test_select_reuseport_kern.o \ 37 test_skb_cgroup_id_kern.o bpf_flow.o netcnt_prog.o test_xdp_vlan.o \ 38 xdp_dummy.o test_map_in_map.o 39 40# Objects are built with default compilation flags and with sub-register 41# code-gen enabled. 42BPF_OBJ_FILES_DUAL_COMPILE = \ 43 test_pkt_access.o test_pkt_access.o test_xdp.o test_adjust_tail.o \ 44 test_l4lb.o test_l4lb_noinline.o test_xdp_noinline.o test_tcp_estats.o \ 45 test_obj_id.o test_pkt_md_access.o test_tracepoint.o \ 46 test_stacktrace_map.o test_stacktrace_map.o test_stacktrace_build_id.o \ 47 test_stacktrace_build_id.o test_get_stack_rawtp.o \ 48 test_get_stack_rawtp.o test_tracepoint.o test_sk_lookup_kern.o \ 49 test_queue_map.o test_stack_map.o 50 51TEST_GEN_FILES = $(BPF_OBJ_FILES) $(BPF_OBJ_FILES_DUAL_COMPILE) 52 53# Also test sub-register code-gen if LLVM + kernel both has eBPF v3 processor 54# support which is the first version to contain both ALU32 and JMP32 55# instructions. 56SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \ 57 $(CLANG) -target bpf -O2 -emit-llvm -S -x c - -o - | \ 58 $(LLC) -mattr=+alu32 -mcpu=probe 2>&1 | \ 59 grep 'if w') 60ifneq ($(SUBREG_CODEGEN),) 61TEST_GEN_FILES += $(patsubst %.o,alu32/%.o, $(BPF_OBJ_FILES_DUAL_COMPILE)) 62endif 63 64# Order correspond to 'make run_tests' order 65TEST_PROGS := test_kmod.sh \ 66 test_libbpf.sh \ 67 test_xdp_redirect.sh \ 68 test_xdp_meta.sh \ 69 test_offload.py \ 70 test_sock_addr.sh \ 71 test_tunnel.sh \ 72 test_lwt_seg6local.sh \ 73 test_lirc_mode2.sh \ 74 test_skb_cgroup_id.sh \ 75 test_flow_dissector.sh \ 76 test_xdp_vlan.sh 77 78TEST_PROGS_EXTENDED := with_addr.sh \ 79 with_tunnels.sh \ 80 tcp_client.py \ 81 tcp_server.py 82 83# Compile but not part of 'make run_tests' 84TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \ 85 flow_dissector_load test_flow_dissector 86 87include ../lib.mk 88 89# NOTE: $(OUTPUT) won't get default value if used before lib.mk 90TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read 91all: $(TEST_CUSTOM_PROGS) 92 93$(OUTPUT)/urandom_read: $(OUTPUT)/%: %.c 94 $(CC) -o $@ -static $< -Wl,--build-id 95 96BPFOBJ := $(OUTPUT)/libbpf.a 97 98$(TEST_GEN_PROGS): $(BPFOBJ) 99 100$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a 101 102$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c 103$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c 104$(OUTPUT)/test_sock: cgroup_helpers.c 105$(OUTPUT)/test_sock_addr: cgroup_helpers.c 106$(OUTPUT)/test_socket_cookie: cgroup_helpers.c 107$(OUTPUT)/test_sockmap: cgroup_helpers.c 108$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c 109$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c 110$(OUTPUT)/test_progs: trace_helpers.c 111$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c 112$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c 113$(OUTPUT)/test_netcnt: cgroup_helpers.c 114 115.PHONY: force 116 117# force a rebuild of BPFOBJ when its dependencies are updated 118force: 119 120$(BPFOBJ): force 121 $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ 122 123PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1) 124 125# Let newer LLVM versions transparently probe the kernel for availability 126# of full BPF instruction set. 127ifeq ($(PROBE),) 128 CPU ?= probe 129else 130 CPU ?= generic 131endif 132 133# Get Clang's default includes on this system, as opposed to those seen by 134# '-target bpf'. This fixes "missing" files on some architectures/distros, 135# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 136# 137# Use '-idirafter': Don't interfere with include mechanics except where the 138# build would have failed anyways. 139CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \ 140 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') 141 142CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \ 143 $(CLANG_SYS_INCLUDES) \ 144 -Wno-compare-distinct-pointer-types 145 146$(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 155BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) 156BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) 157BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') 158BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ 159 $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ 160 $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \ 161 /bin/rm -f ./llvm_btf_verify.o) 162 163ifneq ($(BTF_LLVM_PROBE),) 164 CLANG_FLAGS += -g 165else 166ifneq ($(BTF_LLC_PROBE),) 167ifneq ($(BTF_PAHOLE_PROBE),) 168ifneq ($(BTF_OBJCOPY_PROBE),) 169 CLANG_FLAGS += -g 170 LLC_FLAGS += -mattr=dwarfris 171 DWARF2BTF = y 172endif 173endif 174endif 175endif 176 177ifneq ($(SUBREG_CODEGEN),) 178ALU32_BUILD_DIR = $(OUTPUT)/alu32 179TEST_CUSTOM_PROGS += $(ALU32_BUILD_DIR)/test_progs_32 180$(ALU32_BUILD_DIR): 181 mkdir -p $@ 182 183$(ALU32_BUILD_DIR)/urandom_read: $(OUTPUT)/urandom_read 184 cp $< $@ 185 186$(ALU32_BUILD_DIR)/test_progs_32: test_progs.c $(ALU32_BUILD_DIR) \ 187 $(ALU32_BUILD_DIR)/urandom_read 188 $(CC) $(CFLAGS) -o $(ALU32_BUILD_DIR)/test_progs_32 $< \ 189 trace_helpers.c $(OUTPUT)/libbpf.a $(LDLIBS) 190 191$(ALU32_BUILD_DIR)/%.o: %.c $(ALU32_BUILD_DIR) $(ALU32_BUILD_DIR)/test_progs_32 192 $(CLANG) $(CLANG_FLAGS) \ 193 -O2 -target bpf -emit-llvm -c $< -o - | \ 194 $(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \ 195 -filetype=obj -o $@ 196ifeq ($(DWARF2BTF),y) 197 $(BTF_PAHOLE) -J $@ 198endif 199endif 200 201# Have one program compiled without "-target bpf" to test whether libbpf loads 202# it successfully 203$(OUTPUT)/test_xdp.o: test_xdp.c 204 $(CLANG) $(CLANG_FLAGS) \ 205 -O2 -emit-llvm -c $< -o - | \ 206 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ 207ifeq ($(DWARF2BTF),y) 208 $(BTF_PAHOLE) -J $@ 209endif 210 211$(OUTPUT)/%.o: %.c 212 $(CLANG) $(CLANG_FLAGS) \ 213 -O2 -target bpf -emit-llvm -c $< -o - | \ 214 $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ 215ifeq ($(DWARF2BTF),y) 216 $(BTF_PAHOLE) -J $@ 217endif 218 219$(OUTPUT)/test_verifier: $(OUTPUT)/verifier/tests.h 220$(OUTPUT)/test_verifier: CFLAGS += -I$(OUTPUT) 221 222VERIFIER_TEST_FILES := $(wildcard verifier/*.c) 223$(OUTPUT)/verifier/tests.h: $(VERIFIER_TEST_FILES) 224 $(shell ( cd verifier/ 225 echo '/* Generated header, do not edit */'; \ 226 echo '#ifdef FILL_ARRAY'; \ 227 ls *.c 2> /dev/null | \ 228 sed -e 's@\(.*\)@#include \"\1\"@'; \ 229 echo '#endif' \ 230 ) > $(OUTPUT)/verifier/tests.h) 231 232EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(ALU32_BUILD_DIR) 233