1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 <<
3 BPF_SAMPLES_PATH ?= $(abspath $(src)) <<
4 TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools <<
5 <<
6 pound := \# <<
7 <<
8 # List of programs to build 2 # List of programs to build
9 tprogs-y := test_lru_dist !! 3 hostprogs-y := test_lru_dist
10 tprogs-y += sock_example !! 4 hostprogs-y += sock_example
11 tprogs-y += fds_example !! 5 hostprogs-y += fds_example
12 tprogs-y += sockex1 !! 6 hostprogs-y += sockex1
13 tprogs-y += sockex2 !! 7 hostprogs-y += sockex2
14 tprogs-y += sockex3 !! 8 hostprogs-y += sockex3
15 tprogs-y += tracex1 !! 9 hostprogs-y += tracex1
16 tprogs-y += tracex3 !! 10 hostprogs-y += tracex2
17 tprogs-y += tracex4 !! 11 hostprogs-y += tracex3
18 tprogs-y += tracex5 !! 12 hostprogs-y += tracex4
19 tprogs-y += tracex6 !! 13 hostprogs-y += tracex5
20 tprogs-y += tracex7 !! 14 hostprogs-y += tracex6
21 tprogs-y += test_probe_write_user !! 15 hostprogs-y += tracex7
22 tprogs-y += trace_output !! 16 hostprogs-y += test_probe_write_user
23 tprogs-y += lathist !! 17 hostprogs-y += trace_output
24 tprogs-y += offwaketime !! 18 hostprogs-y += lathist
25 tprogs-y += spintest !! 19 hostprogs-y += offwaketime
26 tprogs-y += map_perf_test !! 20 hostprogs-y += spintest
27 tprogs-y += test_overhead !! 21 hostprogs-y += map_perf_test
28 tprogs-y += test_cgrp2_array_pin !! 22 hostprogs-y += test_overhead
29 tprogs-y += test_cgrp2_attach !! 23 hostprogs-y += test_cgrp2_array_pin
30 tprogs-y += test_cgrp2_sock !! 24 hostprogs-y += test_cgrp2_attach
31 tprogs-y += test_cgrp2_sock2 !! 25 hostprogs-y += test_cgrp2_attach2
32 tprogs-y += xdp_router_ipv4 !! 26 hostprogs-y += test_cgrp2_sock
33 tprogs-y += test_current_task_under_cgroup !! 27 hostprogs-y += test_cgrp2_sock2
34 tprogs-y += trace_event !! 28 hostprogs-y += xdp1
35 tprogs-y += sampleip !! 29 hostprogs-y += xdp2
36 tprogs-y += tc_l2_redirect !! 30 hostprogs-y += xdp_router_ipv4
37 tprogs-y += lwt_len_hist !! 31 hostprogs-y += test_current_task_under_cgroup
38 tprogs-y += xdp_tx_iptunnel !! 32 hostprogs-y += trace_event
39 tprogs-y += test_map_in_map !! 33 hostprogs-y += sampleip
40 tprogs-y += per_socket_stats_example !! 34 hostprogs-y += tc_l2_redirect
41 tprogs-y += syscall_tp !! 35 hostprogs-y += lwt_len_hist
42 tprogs-y += cpustat !! 36 hostprogs-y += xdp_tx_iptunnel
43 tprogs-y += xdp_adjust_tail !! 37 hostprogs-y += test_map_in_map
44 tprogs-y += xdp_fwd !! 38 hostprogs-y += per_socket_stats_example
45 tprogs-y += task_fd_query !! 39 hostprogs-y += load_sock_ops
46 tprogs-y += ibumad !! 40 hostprogs-y += xdp_redirect
47 tprogs-y += hbm !! 41 hostprogs-y += xdp_redirect_map
>> 42 hostprogs-y += xdp_redirect_cpu
>> 43 hostprogs-y += xdp_monitor
>> 44 hostprogs-y += xdp_rxq_info
>> 45 hostprogs-y += syscall_tp
>> 46 hostprogs-y += cpustat
48 47
49 # Libbpf dependencies 48 # Libbpf dependencies
50 LIBBPF_SRC = $(TOOLS_PATH)/lib/bpf !! 49 LIBBPF := ../../tools/lib/bpf/bpf.o ../../tools/lib/bpf/nlattr.o
51 LIBBPF_OUTPUT = $(abspath $(BPF_SAMPLES_PATH)) <<
52 LIBBPF_DESTDIR = $(LIBBPF_OUTPUT) <<
53 LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include <<
54 LIBBPF = $(LIBBPF_OUTPUT)/libbpf.a <<
55 <<
56 CGROUP_HELPERS := ../../tools/testing/selftest 50 CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o
57 TRACE_HELPERS := ../../tools/testing/selftests <<
58 XDP_SAMPLE := xdp_sample_user.o <<
59 51
60 fds_example-objs := fds_example.o !! 52 test_lru_dist-objs := test_lru_dist.o $(LIBBPF)
61 sockex1-objs := sockex1_user.o !! 53 sock_example-objs := sock_example.o $(LIBBPF)
62 sockex2-objs := sockex2_user.o !! 54 fds_example-objs := bpf_load.o $(LIBBPF) fds_example.o
63 sockex3-objs := sockex3_user.o !! 55 sockex1-objs := bpf_load.o $(LIBBPF) sockex1_user.o
64 tracex1-objs := tracex1_user.o $(TRACE_HELPERS !! 56 sockex2-objs := bpf_load.o $(LIBBPF) sockex2_user.o
65 tracex3-objs := tracex3_user.o !! 57 sockex3-objs := bpf_load.o $(LIBBPF) sockex3_user.o
66 tracex4-objs := tracex4_user.o !! 58 tracex1-objs := bpf_load.o $(LIBBPF) tracex1_user.o
67 tracex5-objs := tracex5_user.o $(TRACE_HELPERS !! 59 tracex2-objs := bpf_load.o $(LIBBPF) tracex2_user.o
68 tracex6-objs := tracex6_user.o !! 60 tracex3-objs := bpf_load.o $(LIBBPF) tracex3_user.o
69 tracex7-objs := tracex7_user.o !! 61 tracex4-objs := bpf_load.o $(LIBBPF) tracex4_user.o
70 test_probe_write_user-objs := test_probe_write !! 62 tracex5-objs := bpf_load.o $(LIBBPF) tracex5_user.o
71 trace_output-objs := trace_output_user.o !! 63 tracex6-objs := bpf_load.o $(LIBBPF) tracex6_user.o
72 lathist-objs := lathist_user.o !! 64 tracex7-objs := bpf_load.o $(LIBBPF) tracex7_user.o
73 offwaketime-objs := offwaketime_user.o $(TRACE !! 65 load_sock_ops-objs := bpf_load.o $(LIBBPF) load_sock_ops.o
74 spintest-objs := spintest_user.o $(TRACE_HELPE !! 66 test_probe_write_user-objs := bpf_load.o $(LIBBPF) test_probe_write_user_user.o
75 map_perf_test-objs := map_perf_test_user.o !! 67 trace_output-objs := bpf_load.o $(LIBBPF) trace_output_user.o
76 test_overhead-objs := test_overhead_user.o !! 68 lathist-objs := bpf_load.o $(LIBBPF) lathist_user.o
77 test_cgrp2_array_pin-objs := test_cgrp2_array_ !! 69 offwaketime-objs := bpf_load.o $(LIBBPF) offwaketime_user.o
78 test_cgrp2_attach-objs := test_cgrp2_attach.o !! 70 spintest-objs := bpf_load.o $(LIBBPF) spintest_user.o
79 test_cgrp2_sock-objs := test_cgrp2_sock.o !! 71 map_perf_test-objs := bpf_load.o $(LIBBPF) map_perf_test_user.o
80 test_cgrp2_sock2-objs := test_cgrp2_sock2.o !! 72 test_overhead-objs := bpf_load.o $(LIBBPF) test_overhead_user.o
81 test_current_task_under_cgroup-objs := $(CGROU !! 73 test_cgrp2_array_pin-objs := $(LIBBPF) test_cgrp2_array_pin.o
>> 74 test_cgrp2_attach-objs := $(LIBBPF) test_cgrp2_attach.o
>> 75 test_cgrp2_attach2-objs := $(LIBBPF) test_cgrp2_attach2.o $(CGROUP_HELPERS)
>> 76 test_cgrp2_sock-objs := $(LIBBPF) test_cgrp2_sock.o
>> 77 test_cgrp2_sock2-objs := bpf_load.o $(LIBBPF) test_cgrp2_sock2.o
>> 78 xdp1-objs := bpf_load.o $(LIBBPF) xdp1_user.o
>> 79 # reuse xdp1 source intentionally
>> 80 xdp2-objs := bpf_load.o $(LIBBPF) xdp1_user.o
>> 81 xdp_router_ipv4-objs := bpf_load.o $(LIBBPF) xdp_router_ipv4_user.o
>> 82 test_current_task_under_cgroup-objs := bpf_load.o $(LIBBPF) $(CGROUP_HELPERS) \
82 test_cu 83 test_current_task_under_cgroup_user.o
83 trace_event-objs := trace_event_user.o $(TRACE !! 84 trace_event-objs := bpf_load.o $(LIBBPF) trace_event_user.o
84 sampleip-objs := sampleip_user.o $(TRACE_HELPE !! 85 sampleip-objs := bpf_load.o $(LIBBPF) sampleip_user.o
85 tc_l2_redirect-objs := tc_l2_redirect_user.o !! 86 tc_l2_redirect-objs := bpf_load.o $(LIBBPF) tc_l2_redirect_user.o
86 lwt_len_hist-objs := lwt_len_hist_user.o !! 87 lwt_len_hist-objs := bpf_load.o $(LIBBPF) lwt_len_hist_user.o
87 xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o !! 88 xdp_tx_iptunnel-objs := bpf_load.o $(LIBBPF) xdp_tx_iptunnel_user.o
88 test_map_in_map-objs := test_map_in_map_user.o !! 89 test_map_in_map-objs := bpf_load.o $(LIBBPF) test_map_in_map_user.o
89 per_socket_stats_example-objs := cookie_uid_he !! 90 per_socket_stats_example-objs := $(LIBBPF) cookie_uid_helper_example.o
90 syscall_tp-objs := syscall_tp_user.o !! 91 xdp_redirect-objs := bpf_load.o $(LIBBPF) xdp_redirect_user.o
91 cpustat-objs := cpustat_user.o !! 92 xdp_redirect_map-objs := bpf_load.o $(LIBBPF) xdp_redirect_map_user.o
92 xdp_adjust_tail-objs := xdp_adjust_tail_user.o !! 93 xdp_redirect_cpu-objs := bpf_load.o $(LIBBPF) xdp_redirect_cpu_user.o
93 xdp_fwd-objs := xdp_fwd_user.o !! 94 xdp_monitor-objs := bpf_load.o $(LIBBPF) xdp_monitor_user.o
94 task_fd_query-objs := task_fd_query_user.o $(T !! 95 xdp_rxq_info-objs := bpf_load.o $(LIBBPF) xdp_rxq_info_user.o
95 ibumad-objs := ibumad_user.o !! 96 syscall_tp-objs := bpf_load.o $(LIBBPF) syscall_tp_user.o
96 hbm-objs := hbm.o $(CGROUP_HELPERS) !! 97 cpustat-objs := bpf_load.o $(LIBBPF) cpustat_user.o
97 <<
98 xdp_router_ipv4-objs := xdp_router_ipv4_user.o <<
99 98
100 # Tell kbuild to always build the programs 99 # Tell kbuild to always build the programs
101 always-y := $(tprogs-y) !! 100 always := $(hostprogs-y)
102 always-y += sockex1_kern.o !! 101 always += sockex1_kern.o
103 always-y += sockex2_kern.o !! 102 always += sockex2_kern.o
104 always-y += sockex3_kern.o !! 103 always += sockex3_kern.o
105 always-y += tracex1.bpf.o !! 104 always += tracex1_kern.o
106 always-y += tracex3.bpf.o !! 105 always += tracex2_kern.o
107 always-y += tracex4.bpf.o !! 106 always += tracex3_kern.o
108 always-y += tracex5.bpf.o !! 107 always += tracex4_kern.o
109 always-y += tracex6.bpf.o !! 108 always += tracex5_kern.o
110 always-y += tracex7.bpf.o !! 109 always += tracex6_kern.o
111 always-y += sock_flags.bpf.o !! 110 always += tracex7_kern.o
112 always-y += test_probe_write_user.bpf.o !! 111 always += sock_flags_kern.o
113 always-y += trace_output.bpf.o !! 112 always += test_probe_write_user_kern.o
114 always-y += tcbpf1_kern.o !! 113 always += trace_output_kern.o
115 always-y += tc_l2_redirect_kern.o !! 114 always += tcbpf1_kern.o
116 always-y += lathist_kern.o !! 115 always += tcbpf2_kern.o
117 always-y += offwaketime.bpf.o !! 116 always += tc_l2_redirect_kern.o
118 always-y += spintest.bpf.o !! 117 always += lathist_kern.o
119 always-y += map_perf_test.bpf.o !! 118 always += offwaketime_kern.o
120 always-y += test_overhead_tp.bpf.o !! 119 always += spintest_kern.o
121 always-y += test_overhead_raw_tp.bpf.o !! 120 always += map_perf_test_kern.o
122 always-y += test_overhead_kprobe.bpf.o !! 121 always += test_overhead_tp_kern.o
123 always-y += parse_varlen.o parse_simple.o pars !! 122 always += test_overhead_raw_tp_kern.o
124 always-y += test_cgrp2_tc.bpf.o !! 123 always += test_overhead_kprobe_kern.o
125 always-y += test_current_task_under_cgroup.bpf !! 124 always += parse_varlen.o parse_simple.o parse_ldabs.o
126 always-y += trace_event_kern.o !! 125 always += test_cgrp2_tc_kern.o
127 always-y += sampleip_kern.o !! 126 always += xdp1_kern.o
128 always-y += lwt_len_hist.bpf.o !! 127 always += xdp2_kern.o
129 always-y += xdp_tx_iptunnel_kern.o !! 128 always += xdp_router_ipv4_kern.o
130 always-y += test_map_in_map.bpf.o !! 129 always += test_current_task_under_cgroup_kern.o
131 always-y += tcp_synrto_kern.o !! 130 always += trace_event_kern.o
132 always-y += tcp_rwnd_kern.o !! 131 always += sampleip_kern.o
133 always-y += tcp_bufs_kern.o !! 132 always += lwt_len_hist_kern.o
134 always-y += tcp_cong_kern.o !! 133 always += xdp_tx_iptunnel_kern.o
135 always-y += tcp_iw_kern.o !! 134 always += test_map_in_map_kern.o
136 always-y += tcp_clamp_kern.o !! 135 always += cookie_uid_helper_example.o
137 always-y += tcp_basertt_kern.o !! 136 always += tcp_synrto_kern.o
138 always-y += tcp_tos_reflect_kern.o !! 137 always += tcp_rwnd_kern.o
139 always-y += tcp_dumpstats_kern.o !! 138 always += tcp_bufs_kern.o
140 always-y += xdp2skb_meta_kern.o !! 139 always += tcp_cong_kern.o
141 always-y += syscall_tp_kern.o !! 140 always += tcp_iw_kern.o
142 always-y += cpustat_kern.o !! 141 always += tcp_clamp_kern.o
143 always-y += xdp_adjust_tail_kern.o !! 142 always += tcp_basertt_kern.o
144 always-y += xdp_fwd_kern.o !! 143 always += xdp_redirect_kern.o
145 always-y += task_fd_query_kern.o !! 144 always += xdp_redirect_map_kern.o
146 always-y += ibumad_kern.o !! 145 always += xdp_redirect_cpu_kern.o
147 always-y += hbm_out_kern.o !! 146 always += xdp_monitor_kern.o
148 always-y += hbm_edt_kern.o !! 147 always += xdp_rxq_info_kern.o
149 !! 148 always += xdp2skb_meta_kern.o
150 TPROGS_CFLAGS = $(TPROGS_USER_CFLAGS) !! 149 always += syscall_tp_kern.o
151 TPROGS_LDFLAGS = $(TPROGS_USER_LDFLAGS) !! 150 always += cpustat_kern.o
152 !! 151
153 ifeq ($(ARCH), arm) !! 152 HOSTCFLAGS += -I$(objtree)/usr/include
154 # Strip all except -D__LINUX_ARM_ARCH__ option !! 153 HOSTCFLAGS += -I$(srctree)/tools/lib/
155 # headers when arm instruction set identificat !! 154 HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/
156 ARM_ARCH_SELECTOR := $(filter -D__LINUX_ARM_AR !! 155 HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include
157 BPF_EXTRA_CFLAGS := $(ARM_ARCH_SELECTOR) !! 156 HOSTCFLAGS += -I$(srctree)/tools/perf
158 TPROGS_CFLAGS += $(ARM_ARCH_SELECTOR) !! 157
159 endif !! 158 HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable
160 !! 159 HOSTLOADLIBES_fds_example += -lelf
161 ifeq ($(ARCH), mips) !! 160 HOSTLOADLIBES_sockex1 += -lelf
162 TPROGS_CFLAGS += -D__SANE_USERSPACE_TYPES__ !! 161 HOSTLOADLIBES_sockex2 += -lelf
163 ifdef CONFIG_MACH_LOONGSON64 !! 162 HOSTLOADLIBES_sockex3 += -lelf
164 BPF_EXTRA_CFLAGS += -I$(srctree)/arch/mips/inc !! 163 HOSTLOADLIBES_tracex1 += -lelf
165 BPF_EXTRA_CFLAGS += -I$(srctree)/arch/mips/inc !! 164 HOSTLOADLIBES_tracex2 += -lelf
166 endif !! 165 HOSTLOADLIBES_tracex3 += -lelf
167 endif !! 166 HOSTLOADLIBES_tracex4 += -lelf -lrt
168 !! 167 HOSTLOADLIBES_tracex5 += -lelf
169 ifeq ($(ARCH), x86) !! 168 HOSTLOADLIBES_tracex6 += -lelf
170 BPF_EXTRA_CFLAGS += -fcf-protection !! 169 HOSTLOADLIBES_tracex7 += -lelf
171 endif !! 170 HOSTLOADLIBES_test_cgrp2_sock2 += -lelf
172 !! 171 HOSTLOADLIBES_load_sock_ops += -lelf
173 TPROGS_CFLAGS += -Wall -O2 !! 172 HOSTLOADLIBES_test_probe_write_user += -lelf
174 TPROGS_CFLAGS += -Wmissing-prototypes !! 173 HOSTLOADLIBES_trace_output += -lelf -lrt
175 TPROGS_CFLAGS += -Wstrict-prototypes !! 174 HOSTLOADLIBES_lathist += -lelf
176 TPROGS_CFLAGS += $(call try-run,\ !! 175 HOSTLOADLIBES_offwaketime += -lelf
177 printf "int main() { return 0; }" |\ !! 176 HOSTLOADLIBES_spintest += -lelf
178 $(CC) -Werror -fsanitize=bounds -x c - !! 177 HOSTLOADLIBES_map_perf_test += -lelf -lrt
179 !! 178 HOSTLOADLIBES_test_overhead += -lelf -lrt
180 TPROGS_CFLAGS += -I$(objtree)/usr/include !! 179 HOSTLOADLIBES_xdp1 += -lelf
181 TPROGS_CFLAGS += -I$(srctree)/tools/testing/se !! 180 HOSTLOADLIBES_xdp2 += -lelf
182 TPROGS_CFLAGS += -I$(LIBBPF_INCLUDE) !! 181 HOSTLOADLIBES_xdp_router_ipv4 += -lelf
183 TPROGS_CFLAGS += -I$(srctree)/tools/include !! 182 HOSTLOADLIBES_test_current_task_under_cgroup += -lelf
184 TPROGS_CFLAGS += -I$(srctree)/tools/perf !! 183 HOSTLOADLIBES_trace_event += -lelf
185 TPROGS_CFLAGS += -I$(srctree)/tools/lib !! 184 HOSTLOADLIBES_sampleip += -lelf
186 TPROGS_CFLAGS += -DHAVE_ATTR_TEST=0 !! 185 HOSTLOADLIBES_tc_l2_redirect += -l elf
187 !! 186 HOSTLOADLIBES_lwt_len_hist += -l elf
188 ifdef SYSROOT !! 187 HOSTLOADLIBES_xdp_tx_iptunnel += -lelf
189 TPROGS_CFLAGS += --sysroot=$(SYSROOT) !! 188 HOSTLOADLIBES_test_map_in_map += -lelf
190 TPROGS_LDFLAGS := -L$(SYSROOT)/usr/lib !! 189 HOSTLOADLIBES_xdp_redirect += -lelf
191 endif !! 190 HOSTLOADLIBES_xdp_redirect_map += -lelf
192 !! 191 HOSTLOADLIBES_xdp_redirect_cpu += -lelf
193 TPROGS_LDLIBS += $(LIBBPF) - !! 192 HOSTLOADLIBES_xdp_monitor += -lelf
194 TPROGLDLIBS_xdp_router_ipv4 += -lm -pthrea !! 193 HOSTLOADLIBES_xdp_rxq_info += -lelf
195 TPROGLDLIBS_tracex4 += -lrt !! 194 HOSTLOADLIBES_syscall_tp += -lelf
196 TPROGLDLIBS_trace_output += -lrt !! 195 HOSTLOADLIBES_cpustat += -lelf
197 TPROGLDLIBS_map_perf_test += -lrt <<
198 TPROGLDLIBS_test_overhead += -lrt <<
199 196
200 # Allows pointing LLC/CLANG to a LLVM backend 197 # Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline:
201 # make M=samples/bpf LLC=~/git/llvm-project/ll !! 198 # make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang
202 LLC ?= llc 199 LLC ?= llc
203 CLANG ?= clang 200 CLANG ?= clang
204 OPT ?= opt <<
205 LLVM_DIS ?= llvm-dis <<
206 LLVM_OBJCOPY ?= llvm-objcopy <<
207 LLVM_READELF ?= llvm-readelf <<
208 BTF_PAHOLE ?= pahole <<
209 201
210 # Detect that we're cross compiling and use th 202 # Detect that we're cross compiling and use the cross compiler
211 ifdef CROSS_COMPILE 203 ifdef CROSS_COMPILE
212 CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_CO !! 204 HOSTCC = $(CROSS_COMPILE)gcc
213 endif !! 205 CLANG_ARCH_ARGS = -target $(ARCH)
214 <<
215 # Don't evaluate probes and warnings if we nee <<
216 ifneq ($(src),) <<
217 HDR_PROBE := $(shell printf "$(pound)include < <<
218 $(CC) $(TPROGS_CFLAGS) $(TPROGS_LDFLAG <<
219 -o /dev/null 2>/dev/null && echo okay) <<
220 <<
221 ifeq ($(HDR_PROBE),) <<
222 $(warning WARNING: Detected possible issues wi <<
223 $(warning WARNING: Please install kernel heade <<
224 endif <<
225 <<
226 BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -ma <<
227 BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --he <<
228 BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) - <<
229 BTF_LLVM_PROBE := $(shell echo "int main() { r <<
230 $(CLANG) --target=bp <<
231 $(LLVM_READELF) -S . <<
232 /bin/rm -f ./llvm_bt <<
233 <<
234 BPF_EXTRA_CFLAGS += -fno-stack-protector <<
235 ifneq ($(BTF_LLVM_PROBE),) <<
236 BPF_EXTRA_CFLAGS += -g <<
237 else <<
238 ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PRO <<
239 BPF_EXTRA_CFLAGS += -g <<
240 LLC_FLAGS += -mattr=dwarfris <<
241 DWARF2BTF = y <<
242 endif <<
243 endif <<
244 endif 206 endif
245 207
246 # Trick to allow make to be run from this dire 208 # Trick to allow make to be run from this directory
247 all: !! 209 all: $(LIBBPF)
248 $(MAKE) -C ../../ M=$(CURDIR) BPF_SAMP !! 210 $(MAKE) -C ../../ $(CURDIR)/
249 211
250 clean: 212 clean:
251 $(MAKE) -C ../../ M=$(CURDIR) clean 213 $(MAKE) -C ../../ M=$(CURDIR) clean
252 @find $(CURDIR) -type f -name '*~' -de !! 214 @rm -f *~
253 @$(RM) -r $(CURDIR)/libbpf $(CURDIR)/b !! 215
>> 216 $(LIBBPF): FORCE
>> 217 $(MAKE) -C $(dir $@) $(notdir $@)
254 218
255 $(LIBBPF): $(wildcard $(LIBBPF_SRC)/*.[ch] $(L !! 219 $(obj)/syscall_nrs.s: $(src)/syscall_nrs.c
256 # Fix up variables inherited from Kbuild that !! 220 $(call if_changed_dep,cc_s_c)
257 $(MAKE) -C $(LIBBPF_SRC) RM='rm -rf' E <<
258 LDFLAGS="$(TPROGS_LDFLAGS)" sr <<
259 O= OUTPUT=$(LIBBPF_OUTPUT)/ DE <<
260 $@ install_headers <<
261 <<
262 BPFTOOLDIR := $(TOOLS_PATH)/bpf/bpftool <<
263 BPFTOOL_OUTPUT := $(abspath $(BPF_SAMPLES_PATH <<
264 DEFAULT_BPFTOOL := $(BPFTOOL_OUTPUT)/bootstrap <<
265 BPFTOOL ?= $(DEFAULT_BPFTOOL) <<
266 $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/* <<
267 $(MAKE) -C $(BPFTOOLDIR) srctree=$(BPF <<
268 OUTPUT=$(BPFTOOL_OUTPUT)/ boot <<
269 <<
270 $(LIBBPF_OUTPUT) $(BPFTOOL_OUTPUT): <<
271 $(call msg,MKDIR,$@) <<
272 $(Q)mkdir -p $@ <<
273 221
274 $(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s F 222 $(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE
275 $(call filechk,offsets,__SYSCALL_NRS_H 223 $(call filechk,offsets,__SYSCALL_NRS_H__)
276 224
277 targets += syscall_nrs.s <<
278 clean-files += syscall_nrs.h 225 clean-files += syscall_nrs.h
279 226
280 FORCE: 227 FORCE:
281 228
282 229
283 # Verify LLVM compiler tools are available and 230 # Verify LLVM compiler tools are available and bpf target is supported by llc
284 .PHONY: verify_cmds verify_target_bpf $(CLANG) 231 .PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC)
285 232
286 verify_cmds: $(CLANG) $(LLC) 233 verify_cmds: $(CLANG) $(LLC)
287 @for TOOL in $^ ; do \ 234 @for TOOL in $^ ; do \
288 if ! (which -- "$${TOOL}" > /d 235 if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \
289 echo "*** ERROR: Canno 236 echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\
290 exit 1; \ 237 exit 1; \
291 else true; fi; \ 238 else true; fi; \
292 done 239 done
293 240
294 verify_target_bpf: verify_cmds 241 verify_target_bpf: verify_cmds
295 @if ! (${LLC} -march=bpf -mattr=help > 242 @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \
296 echo "*** ERROR: LLVM (${LLC}) 243 echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\
297 echo " NOTICE: LLVM version 244 echo " NOTICE: LLVM version >= 3.7.1 required" ;\
298 exit 2; \ 245 exit 2; \
299 else true; fi 246 else true; fi
300 247
301 $(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(L !! 248 $(src)/*.c: verify_target_bpf
302 $(src)/*.c: verify_target_bpf $(LIBBPF) <<
303 249
304 libbpf_hdrs: $(LIBBPF) !! 250 $(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h
305 $(obj)/$(TRACE_HELPERS) $(obj)/$(CGROUP_HELPER <<
306 <<
307 .PHONY: libbpf_hdrs <<
308 <<
309 $(obj)/xdp_router_ipv4_user.o: $(obj)/xdp_rout <<
310 <<
311 $(obj)/tracex5.bpf.o: $(obj)/syscall_nrs.h <<
312 $(obj)/hbm_out_kern.o: $(src)/hbm.h $(src)/hbm <<
313 $(obj)/hbm.o: $(src)/hbm.h <<
314 $(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm <<
315 <<
316 # Override includes for xdp_sample_user.o beca <<
317 # TPROGS_CFLAGS causes conflicts <<
318 XDP_SAMPLE_CFLAGS += -Wall -O2 \ <<
319 -I$(src)/../../tools/incl <<
320 -I$(src)/../../tools/incl <<
321 -I$(LIBBPF_INCLUDE) \ <<
322 -I$(src)/../../tools/test <<
323 <<
324 $(obj)/$(XDP_SAMPLE): TPROGS_CFLAGS = $(XDP_SA <<
325 $(obj)/$(XDP_SAMPLE): $(src)/xdp_sample_user.h <<
326 # Override includes for trace_helpers.o becaus <<
327 # in our include path. <<
328 $(obj)/$(TRACE_HELPERS): TPROGS_CFLAGS := $(TP <<
329 <<
330 -include $(BPF_SAMPLES_PATH)/Makefile.target <<
331 <<
332 VMLINUX_BTF_PATHS ?= $(abspath $(if $(O),$(O)/ <<
333 $(abspath $(if $(KBUILD_O <<
334 $(abspath ./vmlinux) <<
335 VMLINUX_BTF ?= $(abspath $(firstword $(wildcar <<
336 <<
337 $(obj)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) <<
338 ifeq ($(VMLINUX_H),) <<
339 ifeq ($(VMLINUX_BTF),) <<
340 $(error Cannot find a vmlinux for VMLI <<
341 build the kernel or set VMLINU <<
342 endif <<
343 $(Q)$(BPFTOOL) btf dump file $(VMLINUX <<
344 else <<
345 $(Q)cp "$(VMLINUX_H)" $@ <<
346 endif <<
347 <<
348 clean-files += vmlinux.h <<
349 <<
350 # Get Clang's default includes on this system, <<
351 # '--target=bpf'. This fixes "missing" files o <<
352 # such as asm/byteorder.h, asm/socket.h, asm/s <<
353 # <<
354 # Use '-idirafter': Don't interfere with inclu <<
355 # build would have failed anyways. <<
356 define get_sys_includes <<
357 $(shell $(1) -v -E - </dev/null 2>&1 \ <<
358 | sed -n '/<...> search starts here:/, <<
359 $(shell $(1) -dM -E - </dev/null | grep '#defi <<
360 endef <<
361 <<
362 CLANG_SYS_INCLUDES = $(call get_sys_includes,$ <<
363 <<
364 $(obj)/xdp_router_ipv4.bpf.o: $(obj)/xdp_sampl <<
365 <<
366 $(obj)/%.bpf.o: $(src)/%.bpf.c $(obj)/vmlinux. <<
367 @echo " CLANG-BPF " $@ <<
368 $(Q)$(CLANG) -g -O2 --target=bpf -D__T <<
369 -Wno-compare-distinct-pointer- <<
370 -I$(srctree)/samples/bpf -I$(s <<
371 -I$(LIBBPF_INCLUDE) $(CLANG_SY <<
372 -c $(filter %.bpf.c,$^) -o $@ <<
373 <<
374 LINKED_SKELS := xdp_router_ipv4.skel.h <<
375 clean-files += $(LINKED_SKELS) <<
376 <<
377 xdp_router_ipv4.skel.h-deps := xdp_router_ipv4 <<
378 <<
379 LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.bpf.c, <<
380 <<
381 BPF_SRCS_LINKED := $(notdir $(wildcard $(src)/ <<
382 BPF_OBJS_LINKED := $(patsubst %.bpf.c,$(obj)/% <<
383 BPF_SKELS_LINKED := $(addprefix $(obj)/,$(LINK <<
384 <<
385 $(BPF_SKELS_LINKED): $(BPF_OBJS_LINKED) $(BPFT <<
386 @echo " BPF GEN-OBJ " $(@:.skel.h=) <<
387 $(Q)$(BPFTOOL) gen object $(@:.skel.h= <<
388 @echo " BPF GEN-SKEL" $(@:.skel.h=) <<
389 $(Q)$(BPFTOOL) gen skeleton $(@:.skel. <<
390 251
391 # asm/sysreg.h - inline assembly used by it is 252 # asm/sysreg.h - inline assembly used by it is incompatible with llvm.
392 # But, there is no easy way to fix it, so just 253 # But, there is no easy way to fix it, so just exclude it since it is
393 # useless for BPF samples. 254 # useless for BPF samples.
394 # below we use long chain of commands, clang | <<
395 # to generate final object file. 'clang' compi <<
396 # with native target, e.g., x64, arm64, etc. ' <<
397 # processing (llvm12) and IR optimizations. 'l <<
398 # 'opt' output to IR, and finally 'llc' genera <<
399 $(obj)/%.o: $(src)/%.c 255 $(obj)/%.o: $(src)/%.c
400 @echo " CLANG-bpf " $@ !! 256 $(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \
401 $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUX !! 257 -I$(srctree)/tools/testing/selftests/bpf/ \
402 -I$(obj) -I$(srctree)/tools/te <<
403 -I$(LIBBPF_INCLUDE) \ <<
404 -D__KERNEL__ -D__BPF_TRACING__ 258 -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \
405 -D__TARGET_ARCH_$(SRCARCH) -Wn !! 259 -D__TARGET_ARCH_$(ARCH) -Wno-compare-distinct-pointer-types \
406 -Wno-gnu-variable-sized-type-n 260 -Wno-gnu-variable-sized-type-not-at-end \
407 -Wno-address-of-packed-member 261 -Wno-address-of-packed-member -Wno-tautological-compare \
408 -Wno-unknown-warning-option $( 262 -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \
409 -fno-asynchronous-unwind-table !! 263 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@
410 -I$(srctree)/samples/bpf/ -inc <<
411 -O2 -emit-llvm -Xclang -disabl <<
412 $(OPT) -O2 -mtriple=bpf-pc-lin <<
413 $(LLC) -march=bpf $(LLC_FLAGS) <<
414 ifeq ($(DWARF2BTF),y) <<
415 $(BTF_PAHOLE) -J $@ <<
416 endif <<
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