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 $(GENHDR)),)
  10   GENFLAGS := -DHAVE_GENHDR
  11 endif
  12
  13 CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include
  14 LDLIBS += -lcap -lelf -lrt -lpthread
  15
  16 TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
  17 all: $(TEST_CUSTOM_PROGS)
  18
  19 $(TEST_CUSTOM_PROGS): $(OUTPUT)/%: %.c
  20         $(CC) -o $(TEST_CUSTOM_PROGS) -static $< -Wl,--build-id
  21
  22 # Order correspond to 'make run_tests' order
  23 TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
  24         test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \
  25         test_sock test_btf test_sockmap test_lirc_mode2_user get_cgroup_id_user \
  26         test_socket_cookie test_cgroup_storage test_select_reuseport
  27
  28 TEST_GEN_FILES = test_pkt_access.o test_xdp.o test_l4lb.o test_tcp_estats.o test_obj_id.o \
  29         test_pkt_md_access.o test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o     \
  30         sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o test_tracepoint.o \
  31         test_l4lb_noinline.o test_xdp_noinline.o test_stacktrace_map.o \
  32         sample_map_ret0.o test_tcpbpf_kern.o test_stacktrace_build_id.o \
  33         sockmap_tcp_msg_prog.o connect4_prog.o connect6_prog.o test_adjust_tail.o \
  34         test_btf_haskv.o test_btf_nokv.o test_sockmap_kern.o test_tunnel_kern.o \
  35         test_get_stack_rawtp.o test_sockmap_kern.o test_sockhash_kern.o \
  36         test_lwt_seg6local.o sendmsg4_prog.o sendmsg6_prog.o test_lirc_mode2_kern.o \
  37         get_cgroup_id_kern.o socket_cookie_prog.o test_select_reuseport_kern.o \
  38         test_skb_cgroup_id_kern.o
  39
  40 # Order correspond to 'make run_tests' order
  41 TEST_PROGS := test_kmod.sh \
  42         test_libbpf.sh \
  43         test_xdp_redirect.sh \
  44         test_xdp_meta.sh \
  45         test_offload.py \
  46         test_sock_addr.sh \
  47         test_tunnel.sh \
  48         test_lwt_seg6local.sh \
  49         test_lirc_mode2.sh \
  50         test_skb_cgroup_id.sh
  51
  52 # Compile but not part of 'make run_tests'
  53 TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user
  54
  55 include ../lib.mk
  56
  57 BPFOBJ := $(OUTPUT)/libbpf.a
  58
  59 $(TEST_GEN_PROGS): $(BPFOBJ)
  60
  61 $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a
  62
  63 $(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
  64 $(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
  65 $(OUTPUT)/test_sock: cgroup_helpers.c
  66 $(OUTPUT)/test_sock_addr: cgroup_helpers.c
  67 $(OUTPUT)/test_socket_cookie: cgroup_helpers.c
  68 $(OUTPUT)/test_sockmap: cgroup_helpers.c
  69 $(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
  70 $(OUTPUT)/test_progs: trace_helpers.c
  71 $(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
  72 $(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
  73
  74 .PHONY: force
  75
  76 # force a rebuild of BPFOBJ when its dependencies are updated
  77 force:
  78
  79 $(BPFOBJ): force
  80         $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
  81
  82 CLANG ?= clang
  83 LLC   ?= llc
  84 LLVM_OBJCOPY ?= llvm-objcopy
  85 BTF_PAHOLE ?= pahole
  86
  87 PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
  88
  89 # Let newer LLVM versions transparently probe the kernel for availability
  90 # of full BPF instruction set.
  91 ifeq ($(PROBE),)
  92   CPU ?= probe
  93 else
  94   CPU ?= generic
  95 endif
  96
  97 # Get Clang's default includes on this system, as opposed to those seen by
  98 # '-target bpf'. This fixes "missing" files on some architectures/distros,
  99 # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
 100 #
 101 # Use '-idirafter': Don't interfere with include mechanics except where the
 102 # build would have failed anyways.
 103 CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \
 104         | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
 105
 106 CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
 107               $(CLANG_SYS_INCLUDES) \
 108               -Wno-compare-distinct-pointer-types
 109
 110 $(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
 111 $(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
 112
 113 BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
 114 BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
 115 BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
 116
 117 ifneq ($(BTF_LLC_PROBE),)
 118 ifneq ($(BTF_PAHOLE_PROBE),)
 119 ifneq ($(BTF_OBJCOPY_PROBE),)
 120         CLANG_FLAGS += -g
 121         LLC_FLAGS += -mattr=dwarfris
 122         DWARF2BTF = y
 123 endif
 124 endif
 125 endif
 126
 127 # Have one program compiled without "-target bpf" to test whether libbpf loads
 128 # it successfully
 129 $(OUTPUT)/test_xdp.o: test_xdp.c
 130         $(CLANG) $(CLANG_FLAGS) \
 131                 -O2 -emit-llvm -c $< -o - | \
 132         $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
 133 ifeq ($(DWARF2BTF),y)
 134         $(BTF_PAHOLE) -J $@
 135 endif
 136
 137 $(OUTPUT)/%.o: %.c
 138         $(CLANG) $(CLANG_FLAGS) \
 139                  -O2 -target bpf -emit-llvm -c $< -o - |      \
 140         $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
 141 ifeq ($(DWARF2BTF),y)
 142         $(BTF_PAHOLE) -J $@
 143 endif
 144
 145 EXTRA_CLEAN := $(TEST_CUSTOM_PROGS)