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 $(GENHDR)),)
10  GENFLAGS := -DHAVE_GENHDR
11endif
12
13CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include
14LDLIBS += -lcap -lelf -lrt -lpthread
15
16TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
17all: $(TEST_CUSTOM_PROGS)
18
19$(TEST_CUSTOM_PROGS): $(OUTPUT)/%: %.c
20	$(CC) -o $(TEST_CUSTOM_PROGS) -static $< -Wl,--build-id
21
22# Order correspond to 'make run_tests' order
23TEST_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
28TEST_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
41TEST_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'
53TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user
54
55include ../lib.mk
56
57BPFOBJ := $(OUTPUT)/libbpf.a
58
59$(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$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
73
74.PHONY: force
75
76# force a rebuild of BPFOBJ when its dependencies are updated
77force:
78
79$(BPFOBJ): force
80	$(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
81
82CLANG ?= clang
83LLC   ?= llc
84LLVM_OBJCOPY ?= llvm-objcopy
85BTF_PAHOLE ?= pahole
86
87PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
88
89# Let newer LLVM versions transparently probe the kernel for availability
90# of full BPF instruction set.
91ifeq ($(PROBE),)
92  CPU ?= probe
93else
94  CPU ?= generic
95endif
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.
103CLANG_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
106CLANG_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
113BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
114BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
115BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
116
117ifneq ($(BTF_LLC_PROBE),)
118ifneq ($(BTF_PAHOLE_PROBE),)
119ifneq ($(BTF_OBJCOPY_PROBE),)
120	CLANG_FLAGS += -g
121	LLC_FLAGS += -mattr=dwarfris
122	DWARF2BTF = y
123endif
124endif
125endif
126
127$(OUTPUT)/%.o: %.c
128	$(CLANG) $(CLANG_FLAGS) \
129		 -O2 -target bpf -emit-llvm -c $< -o - |      \
130	$(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
131ifeq ($(DWARF2BTF),y)
132	$(BTF_PAHOLE) -J $@
133endif
134
135EXTRA_CLEAN := $(TEST_CUSTOM_PROGS)
136