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 test_section_names \
27	test_netcnt test_tcpnotify_user
28
29TEST_GEN_FILES = test_pkt_access.o test_xdp.o test_l4lb.o test_tcp_estats.o test_obj_id.o \
30	test_pkt_md_access.o test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o     \
31	sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o test_tracepoint.o \
32	test_l4lb_noinline.o test_xdp_noinline.o test_stacktrace_map.o \
33	test_tcpnotify_kern.o \
34	sample_map_ret0.o test_tcpbpf_kern.o test_stacktrace_build_id.o \
35	sockmap_tcp_msg_prog.o connect4_prog.o connect6_prog.o test_adjust_tail.o \
36	test_btf_haskv.o test_btf_nokv.o test_sockmap_kern.o test_tunnel_kern.o \
37	test_get_stack_rawtp.o test_sockmap_kern.o test_sockhash_kern.o \
38	test_lwt_seg6local.o sendmsg4_prog.o sendmsg6_prog.o test_lirc_mode2_kern.o \
39	get_cgroup_id_kern.o socket_cookie_prog.o test_select_reuseport_kern.o \
40	test_skb_cgroup_id_kern.o bpf_flow.o netcnt_prog.o \
41	test_sk_lookup_kern.o test_xdp_vlan.o test_queue_map.o test_stack_map.o \
42	xdp_dummy.o test_map_in_map.o
43
44# Order correspond to 'make run_tests' order
45TEST_PROGS := test_kmod.sh \
46	test_libbpf.sh \
47	test_xdp_redirect.sh \
48	test_xdp_meta.sh \
49	test_offload.py \
50	test_sock_addr.sh \
51	test_tunnel.sh \
52	test_lwt_seg6local.sh \
53	test_lirc_mode2.sh \
54	test_skb_cgroup_id.sh \
55	test_flow_dissector.sh \
56	test_xdp_vlan.sh
57
58TEST_PROGS_EXTENDED := with_addr.sh \
59	with_tunnels.sh \
60	tcp_client.py \
61	tcp_server.py
62
63# Compile but not part of 'make run_tests'
64TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \
65	flow_dissector_load test_flow_dissector
66
67include ../lib.mk
68
69BPFOBJ := $(OUTPUT)/libbpf.a
70
71$(TEST_GEN_PROGS): $(BPFOBJ)
72
73$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a
74
75$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
76$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
77$(OUTPUT)/test_sock: cgroup_helpers.c
78$(OUTPUT)/test_sock_addr: cgroup_helpers.c
79$(OUTPUT)/test_socket_cookie: cgroup_helpers.c
80$(OUTPUT)/test_sockmap: cgroup_helpers.c
81$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
82$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
83$(OUTPUT)/test_progs: trace_helpers.c
84$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
85$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
86$(OUTPUT)/test_netcnt: cgroup_helpers.c
87
88.PHONY: force
89
90# force a rebuild of BPFOBJ when its dependencies are updated
91force:
92
93$(BPFOBJ): force
94	$(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
95
96CLANG ?= clang
97LLC   ?= llc
98LLVM_OBJCOPY ?= llvm-objcopy
99BTF_PAHOLE ?= pahole
100
101PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
102
103# Let newer LLVM versions transparently probe the kernel for availability
104# of full BPF instruction set.
105ifeq ($(PROBE),)
106  CPU ?= probe
107else
108  CPU ?= generic
109endif
110
111# Get Clang's default includes on this system, as opposed to those seen by
112# '-target bpf'. This fixes "missing" files on some architectures/distros,
113# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
114#
115# Use '-idirafter': Don't interfere with include mechanics except where the
116# build would have failed anyways.
117CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \
118	| sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
119
120CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
121	      $(CLANG_SYS_INCLUDES) \
122	      -Wno-compare-distinct-pointer-types
123
124$(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
125$(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
126
127$(OUTPUT)/test_queue_map.o: test_queue_stack_map.h
128$(OUTPUT)/test_stack_map.o: test_queue_stack_map.h
129
130BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
131BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
132BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
133BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \
134			  $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \
135			  readelf -S ./llvm_btf_verify.o | grep BTF; \
136			  /bin/rm -f ./llvm_btf_verify.o)
137
138ifneq ($(BTF_LLVM_PROBE),)
139	CLANG_FLAGS += -g
140else
141ifneq ($(BTF_LLC_PROBE),)
142ifneq ($(BTF_PAHOLE_PROBE),)
143ifneq ($(BTF_OBJCOPY_PROBE),)
144	CLANG_FLAGS += -g
145	LLC_FLAGS += -mattr=dwarfris
146	DWARF2BTF = y
147endif
148endif
149endif
150endif
151
152# Have one program compiled without "-target bpf" to test whether libbpf loads
153# it successfully
154$(OUTPUT)/test_xdp.o: test_xdp.c
155	$(CLANG) $(CLANG_FLAGS) \
156		-O2 -emit-llvm -c $< -o - | \
157	$(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
158ifeq ($(DWARF2BTF),y)
159	$(BTF_PAHOLE) -J $@
160endif
161
162$(OUTPUT)/%.o: %.c
163	$(CLANG) $(CLANG_FLAGS) \
164		 -O2 -target bpf -emit-llvm -c $< -o - |      \
165	$(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
166ifeq ($(DWARF2BTF),y)
167	$(BTF_PAHOLE) -J $@
168endif
169
170EXTRA_CLEAN := $(TEST_CUSTOM_PROGS)
171