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selftests/bpf: cgroup local storage-based network counters
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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 test_section_names \
27         test_netcnt
28
29 TEST_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         sample_map_ret0.o test_tcpbpf_kern.o test_stacktrace_build_id.o \
34         sockmap_tcp_msg_prog.o connect4_prog.o connect6_prog.o test_adjust_tail.o \
35         test_btf_haskv.o test_btf_nokv.o test_sockmap_kern.o test_tunnel_kern.o \
36         test_get_stack_rawtp.o test_sockmap_kern.o test_sockhash_kern.o \
37         test_lwt_seg6local.o sendmsg4_prog.o sendmsg6_prog.o test_lirc_mode2_kern.o \
38         get_cgroup_id_kern.o socket_cookie_prog.o test_select_reuseport_kern.o \
39         test_skb_cgroup_id_kern.o bpf_flow.o netcnt_prog.o
40
41 # Order correspond to 'make run_tests' order
42 TEST_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
54 # Compile but not part of 'make run_tests'
55 TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \
56         flow_dissector_load test_flow_dissector
57
58 include ../lib.mk
59
60 BPFOBJ := $(OUTPUT)/libbpf.a
61
62 $(TEST_GEN_PROGS): $(BPFOBJ)
63
64 $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a
65
66 $(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
67 $(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
68 $(OUTPUT)/test_sock: cgroup_helpers.c
69 $(OUTPUT)/test_sock_addr: cgroup_helpers.c
70 $(OUTPUT)/test_socket_cookie: cgroup_helpers.c
71 $(OUTPUT)/test_sockmap: cgroup_helpers.c
72 $(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
73 $(OUTPUT)/test_progs: trace_helpers.c
74 $(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
75 $(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
76 $(OUTPUT)/test_netcnt: cgroup_helpers.c
77
78 .PHONY: force
79
80 # force a rebuild of BPFOBJ when its dependencies are updated
81 force:
82
83 $(BPFOBJ): force
84         $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
85
86 CLANG ?= clang
87 LLC   ?= llc
88 LLVM_OBJCOPY ?= llvm-objcopy
89 BTF_PAHOLE ?= pahole
90
91 PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
92
93 # Let newer LLVM versions transparently probe the kernel for availability
94 # of full BPF instruction set.
95 ifeq ($(PROBE),)
96   CPU ?= probe
97 else
98   CPU ?= generic
99 endif
100
101 # Get Clang's default includes on this system, as opposed to those seen by
102 # '-target bpf'. This fixes "missing" files on some architectures/distros,
103 # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
104 #
105 # Use '-idirafter': Don't interfere with include mechanics except where the
106 # build would have failed anyways.
107 CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \
108         | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
109
110 CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
111               $(CLANG_SYS_INCLUDES) \
112               -Wno-compare-distinct-pointer-types
113
114 $(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
115 $(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
116
117 BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
118 BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
119 BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
120
121 ifneq ($(BTF_LLC_PROBE),)
122 ifneq ($(BTF_PAHOLE_PROBE),)
123 ifneq ($(BTF_OBJCOPY_PROBE),)
124         CLANG_FLAGS += -g
125         LLC_FLAGS += -mattr=dwarfris
126         DWARF2BTF = y
127 endif
128 endif
129 endif
130
131 $(OUTPUT)/%.o: %.c
132         $(CLANG) $(CLANG_FLAGS) \
133                  -O2 -target bpf -emit-llvm -c $< -o - |      \
134         $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
135 ifeq ($(DWARF2BTF),y)
136         $(BTF_PAHOLE) -J $@
137 endif
138
139 EXTRA_CLEAN := $(TEST_CUSTOM_PROGS)