1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 2
3 BPF_SAMPLES_PATH ?= $(abspath $(src)) !! 3 BPF_SAMPLES_PATH ?= $(abspath $(srctree)/$(src))
4 TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools 4 TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools
5 5
6 pound := \# <<
7 <<
8 # List of programs to build 6 # List of programs to build
9 tprogs-y := test_lru_dist !! 7 hostprogs-y := test_lru_dist
10 tprogs-y += sock_example !! 8 hostprogs-y += sock_example
11 tprogs-y += fds_example !! 9 hostprogs-y += fds_example
12 tprogs-y += sockex1 !! 10 hostprogs-y += sockex1
13 tprogs-y += sockex2 !! 11 hostprogs-y += sockex2
14 tprogs-y += sockex3 !! 12 hostprogs-y += sockex3
15 tprogs-y += tracex1 !! 13 hostprogs-y += tracex1
16 tprogs-y += tracex3 !! 14 hostprogs-y += tracex2
17 tprogs-y += tracex4 !! 15 hostprogs-y += tracex3
18 tprogs-y += tracex5 !! 16 hostprogs-y += tracex4
19 tprogs-y += tracex6 !! 17 hostprogs-y += tracex5
20 tprogs-y += tracex7 !! 18 hostprogs-y += tracex6
21 tprogs-y += test_probe_write_user !! 19 hostprogs-y += tracex7
22 tprogs-y += trace_output !! 20 hostprogs-y += test_probe_write_user
23 tprogs-y += lathist !! 21 hostprogs-y += trace_output
24 tprogs-y += offwaketime !! 22 hostprogs-y += lathist
25 tprogs-y += spintest !! 23 hostprogs-y += offwaketime
26 tprogs-y += map_perf_test !! 24 hostprogs-y += spintest
27 tprogs-y += test_overhead !! 25 hostprogs-y += map_perf_test
28 tprogs-y += test_cgrp2_array_pin !! 26 hostprogs-y += test_overhead
29 tprogs-y += test_cgrp2_attach !! 27 hostprogs-y += test_cgrp2_array_pin
30 tprogs-y += test_cgrp2_sock !! 28 hostprogs-y += test_cgrp2_attach
31 tprogs-y += test_cgrp2_sock2 !! 29 hostprogs-y += test_cgrp2_sock
32 tprogs-y += xdp_router_ipv4 !! 30 hostprogs-y += test_cgrp2_sock2
33 tprogs-y += test_current_task_under_cgroup !! 31 hostprogs-y += xdp1
34 tprogs-y += trace_event !! 32 hostprogs-y += xdp2
35 tprogs-y += sampleip !! 33 hostprogs-y += xdp_router_ipv4
36 tprogs-y += tc_l2_redirect !! 34 hostprogs-y += test_current_task_under_cgroup
37 tprogs-y += lwt_len_hist !! 35 hostprogs-y += trace_event
38 tprogs-y += xdp_tx_iptunnel !! 36 hostprogs-y += sampleip
39 tprogs-y += test_map_in_map !! 37 hostprogs-y += tc_l2_redirect
40 tprogs-y += per_socket_stats_example !! 38 hostprogs-y += lwt_len_hist
41 tprogs-y += syscall_tp !! 39 hostprogs-y += xdp_tx_iptunnel
42 tprogs-y += cpustat !! 40 hostprogs-y += test_map_in_map
43 tprogs-y += xdp_adjust_tail !! 41 hostprogs-y += per_socket_stats_example
44 tprogs-y += xdp_fwd !! 42 hostprogs-y += xdp_redirect
45 tprogs-y += task_fd_query !! 43 hostprogs-y += xdp_redirect_map
46 tprogs-y += ibumad !! 44 hostprogs-y += xdp_redirect_cpu
47 tprogs-y += hbm !! 45 hostprogs-y += xdp_monitor
>> 46 hostprogs-y += xdp_rxq_info
>> 47 hostprogs-y += syscall_tp
>> 48 hostprogs-y += cpustat
>> 49 hostprogs-y += xdp_adjust_tail
>> 50 hostprogs-y += xdpsock
>> 51 hostprogs-y += xdp_fwd
>> 52 hostprogs-y += task_fd_query
>> 53 hostprogs-y += xdp_sample_pkts
>> 54 hostprogs-y += ibumad
>> 55 hostprogs-y += hbm
48 56
49 # Libbpf dependencies 57 # Libbpf dependencies
50 LIBBPF_SRC = $(TOOLS_PATH)/lib/bpf !! 58 LIBBPF = $(TOOLS_PATH)/lib/bpf/libbpf.a
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 59
56 CGROUP_HELPERS := ../../tools/testing/selftest 60 CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o
57 TRACE_HELPERS := ../../tools/testing/selftests 61 TRACE_HELPERS := ../../tools/testing/selftests/bpf/trace_helpers.o
58 XDP_SAMPLE := xdp_sample_user.o <<
59 62
60 fds_example-objs := fds_example.o 63 fds_example-objs := fds_example.o
61 sockex1-objs := sockex1_user.o 64 sockex1-objs := sockex1_user.o
62 sockex2-objs := sockex2_user.o 65 sockex2-objs := sockex2_user.o
63 sockex3-objs := sockex3_user.o !! 66 sockex3-objs := bpf_load.o sockex3_user.o
64 tracex1-objs := tracex1_user.o $(TRACE_HELPERS !! 67 tracex1-objs := bpf_load.o tracex1_user.o
65 tracex3-objs := tracex3_user.o !! 68 tracex2-objs := bpf_load.o tracex2_user.o
66 tracex4-objs := tracex4_user.o !! 69 tracex3-objs := bpf_load.o tracex3_user.o
67 tracex5-objs := tracex5_user.o $(TRACE_HELPERS !! 70 tracex4-objs := bpf_load.o tracex4_user.o
68 tracex6-objs := tracex6_user.o !! 71 tracex5-objs := bpf_load.o tracex5_user.o
69 tracex7-objs := tracex7_user.o !! 72 tracex6-objs := bpf_load.o tracex6_user.o
70 test_probe_write_user-objs := test_probe_write !! 73 tracex7-objs := bpf_load.o tracex7_user.o
71 trace_output-objs := trace_output_user.o !! 74 test_probe_write_user-objs := bpf_load.o test_probe_write_user_user.o
72 lathist-objs := lathist_user.o !! 75 trace_output-objs := bpf_load.o trace_output_user.o $(TRACE_HELPERS)
73 offwaketime-objs := offwaketime_user.o $(TRACE !! 76 lathist-objs := bpf_load.o lathist_user.o
74 spintest-objs := spintest_user.o $(TRACE_HELPE !! 77 offwaketime-objs := bpf_load.o offwaketime_user.o $(TRACE_HELPERS)
75 map_perf_test-objs := map_perf_test_user.o !! 78 spintest-objs := bpf_load.o spintest_user.o $(TRACE_HELPERS)
76 test_overhead-objs := test_overhead_user.o !! 79 map_perf_test-objs := bpf_load.o map_perf_test_user.o
>> 80 test_overhead-objs := bpf_load.o test_overhead_user.o
77 test_cgrp2_array_pin-objs := test_cgrp2_array_ 81 test_cgrp2_array_pin-objs := test_cgrp2_array_pin.o
78 test_cgrp2_attach-objs := test_cgrp2_attach.o 82 test_cgrp2_attach-objs := test_cgrp2_attach.o
79 test_cgrp2_sock-objs := test_cgrp2_sock.o 83 test_cgrp2_sock-objs := test_cgrp2_sock.o
80 test_cgrp2_sock2-objs := test_cgrp2_sock2.o !! 84 test_cgrp2_sock2-objs := bpf_load.o test_cgrp2_sock2.o
81 test_current_task_under_cgroup-objs := $(CGROU !! 85 xdp1-objs := xdp1_user.o
>> 86 # reuse xdp1 source intentionally
>> 87 xdp2-objs := xdp1_user.o
>> 88 xdp_router_ipv4-objs := xdp_router_ipv4_user.o
>> 89 test_current_task_under_cgroup-objs := bpf_load.o $(CGROUP_HELPERS) \
82 test_cu 90 test_current_task_under_cgroup_user.o
83 trace_event-objs := trace_event_user.o $(TRACE !! 91 trace_event-objs := bpf_load.o trace_event_user.o $(TRACE_HELPERS)
84 sampleip-objs := sampleip_user.o $(TRACE_HELPE !! 92 sampleip-objs := bpf_load.o sampleip_user.o $(TRACE_HELPERS)
85 tc_l2_redirect-objs := tc_l2_redirect_user.o !! 93 tc_l2_redirect-objs := bpf_load.o tc_l2_redirect_user.o
86 lwt_len_hist-objs := lwt_len_hist_user.o !! 94 lwt_len_hist-objs := bpf_load.o lwt_len_hist_user.o
87 xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o 95 xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o
88 test_map_in_map-objs := test_map_in_map_user.o !! 96 test_map_in_map-objs := bpf_load.o test_map_in_map_user.o
89 per_socket_stats_example-objs := cookie_uid_he 97 per_socket_stats_example-objs := cookie_uid_helper_example.o
90 syscall_tp-objs := syscall_tp_user.o !! 98 xdp_redirect-objs := xdp_redirect_user.o
91 cpustat-objs := cpustat_user.o !! 99 xdp_redirect_map-objs := xdp_redirect_map_user.o
>> 100 xdp_redirect_cpu-objs := bpf_load.o xdp_redirect_cpu_user.o
>> 101 xdp_monitor-objs := bpf_load.o xdp_monitor_user.o
>> 102 xdp_rxq_info-objs := xdp_rxq_info_user.o
>> 103 syscall_tp-objs := bpf_load.o syscall_tp_user.o
>> 104 cpustat-objs := bpf_load.o cpustat_user.o
92 xdp_adjust_tail-objs := xdp_adjust_tail_user.o 105 xdp_adjust_tail-objs := xdp_adjust_tail_user.o
>> 106 xdpsock-objs := xdpsock_user.o
93 xdp_fwd-objs := xdp_fwd_user.o 107 xdp_fwd-objs := xdp_fwd_user.o
94 task_fd_query-objs := task_fd_query_user.o $(T !! 108 task_fd_query-objs := bpf_load.o task_fd_query_user.o $(TRACE_HELPERS)
95 ibumad-objs := ibumad_user.o !! 109 xdp_sample_pkts-objs := xdp_sample_pkts_user.o $(TRACE_HELPERS)
96 hbm-objs := hbm.o $(CGROUP_HELPERS) !! 110 ibumad-objs := bpf_load.o ibumad_user.o $(TRACE_HELPERS)
97 !! 111 hbm-objs := bpf_load.o hbm.o $(CGROUP_HELPERS)
98 xdp_router_ipv4-objs := xdp_router_ipv4_user.o <<
99 112
100 # Tell kbuild to always build the programs 113 # Tell kbuild to always build the programs
101 always-y := $(tprogs-y) !! 114 always := $(hostprogs-y)
102 always-y += sockex1_kern.o !! 115 always += sockex1_kern.o
103 always-y += sockex2_kern.o !! 116 always += sockex2_kern.o
104 always-y += sockex3_kern.o !! 117 always += sockex3_kern.o
105 always-y += tracex1.bpf.o !! 118 always += tracex1_kern.o
106 always-y += tracex3.bpf.o !! 119 always += tracex2_kern.o
107 always-y += tracex4.bpf.o !! 120 always += tracex3_kern.o
108 always-y += tracex5.bpf.o !! 121 always += tracex4_kern.o
109 always-y += tracex6.bpf.o !! 122 always += tracex5_kern.o
110 always-y += tracex7.bpf.o !! 123 always += tracex6_kern.o
111 always-y += sock_flags.bpf.o !! 124 always += tracex7_kern.o
112 always-y += test_probe_write_user.bpf.o !! 125 always += sock_flags_kern.o
113 always-y += trace_output.bpf.o !! 126 always += test_probe_write_user_kern.o
114 always-y += tcbpf1_kern.o !! 127 always += trace_output_kern.o
115 always-y += tc_l2_redirect_kern.o !! 128 always += tcbpf1_kern.o
116 always-y += lathist_kern.o !! 129 always += tc_l2_redirect_kern.o
117 always-y += offwaketime.bpf.o !! 130 always += lathist_kern.o
118 always-y += spintest.bpf.o !! 131 always += offwaketime_kern.o
119 always-y += map_perf_test.bpf.o !! 132 always += spintest_kern.o
120 always-y += test_overhead_tp.bpf.o !! 133 always += map_perf_test_kern.o
121 always-y += test_overhead_raw_tp.bpf.o !! 134 always += test_overhead_tp_kern.o
122 always-y += test_overhead_kprobe.bpf.o !! 135 always += test_overhead_raw_tp_kern.o
123 always-y += parse_varlen.o parse_simple.o pars !! 136 always += test_overhead_kprobe_kern.o
124 always-y += test_cgrp2_tc.bpf.o !! 137 always += parse_varlen.o parse_simple.o parse_ldabs.o
125 always-y += test_current_task_under_cgroup.bpf !! 138 always += test_cgrp2_tc_kern.o
126 always-y += trace_event_kern.o !! 139 always += xdp1_kern.o
127 always-y += sampleip_kern.o !! 140 always += xdp2_kern.o
128 always-y += lwt_len_hist.bpf.o !! 141 always += xdp_router_ipv4_kern.o
129 always-y += xdp_tx_iptunnel_kern.o !! 142 always += test_current_task_under_cgroup_kern.o
130 always-y += test_map_in_map.bpf.o !! 143 always += trace_event_kern.o
131 always-y += tcp_synrto_kern.o !! 144 always += sampleip_kern.o
132 always-y += tcp_rwnd_kern.o !! 145 always += lwt_len_hist_kern.o
133 always-y += tcp_bufs_kern.o !! 146 always += xdp_tx_iptunnel_kern.o
134 always-y += tcp_cong_kern.o !! 147 always += test_map_in_map_kern.o
135 always-y += tcp_iw_kern.o !! 148 always += cookie_uid_helper_example.o
136 always-y += tcp_clamp_kern.o !! 149 always += tcp_synrto_kern.o
137 always-y += tcp_basertt_kern.o !! 150 always += tcp_rwnd_kern.o
138 always-y += tcp_tos_reflect_kern.o !! 151 always += tcp_bufs_kern.o
139 always-y += tcp_dumpstats_kern.o !! 152 always += tcp_cong_kern.o
140 always-y += xdp2skb_meta_kern.o !! 153 always += tcp_iw_kern.o
141 always-y += syscall_tp_kern.o !! 154 always += tcp_clamp_kern.o
142 always-y += cpustat_kern.o !! 155 always += tcp_basertt_kern.o
143 always-y += xdp_adjust_tail_kern.o !! 156 always += tcp_tos_reflect_kern.o
144 always-y += xdp_fwd_kern.o !! 157 always += tcp_dumpstats_kern.o
145 always-y += task_fd_query_kern.o !! 158 always += xdp_redirect_kern.o
146 always-y += ibumad_kern.o !! 159 always += xdp_redirect_map_kern.o
147 always-y += hbm_out_kern.o !! 160 always += xdp_redirect_cpu_kern.o
148 always-y += hbm_edt_kern.o !! 161 always += xdp_monitor_kern.o
149 !! 162 always += xdp_rxq_info_kern.o
150 TPROGS_CFLAGS = $(TPROGS_USER_CFLAGS) !! 163 always += xdp2skb_meta_kern.o
151 TPROGS_LDFLAGS = $(TPROGS_USER_LDFLAGS) !! 164 always += syscall_tp_kern.o
152 !! 165 always += cpustat_kern.o
153 ifeq ($(ARCH), arm) !! 166 always += xdp_adjust_tail_kern.o
154 # Strip all except -D__LINUX_ARM_ARCH__ option !! 167 always += xdp_fwd_kern.o
155 # headers when arm instruction set identificat !! 168 always += task_fd_query_kern.o
156 ARM_ARCH_SELECTOR := $(filter -D__LINUX_ARM_AR !! 169 always += xdp_sample_pkts_kern.o
157 BPF_EXTRA_CFLAGS := $(ARM_ARCH_SELECTOR) !! 170 always += ibumad_kern.o
158 TPROGS_CFLAGS += $(ARM_ARCH_SELECTOR) !! 171 always += hbm_out_kern.o
159 endif !! 172 always += hbm_edt_kern.o
160 !! 173
161 ifeq ($(ARCH), mips) !! 174 KBUILD_HOSTCFLAGS += -I$(objtree)/usr/include
162 TPROGS_CFLAGS += -D__SANE_USERSPACE_TYPES__ !! 175 KBUILD_HOSTCFLAGS += -I$(srctree)/tools/lib/bpf/
163 ifdef CONFIG_MACH_LOONGSON64 !! 176 KBUILD_HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/
164 BPF_EXTRA_CFLAGS += -I$(srctree)/arch/mips/inc !! 177 KBUILD_HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include
165 BPF_EXTRA_CFLAGS += -I$(srctree)/arch/mips/inc !! 178 KBUILD_HOSTCFLAGS += -I$(srctree)/tools/perf
166 endif !! 179 KBUILD_HOSTCFLAGS += -DHAVE_ATTR_TEST=0
167 endif !! 180
168 !! 181 HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable
169 ifeq ($(ARCH), x86) !! 182
170 BPF_EXTRA_CFLAGS += -fcf-protection !! 183 KBUILD_HOSTLDLIBS += $(LIBBPF) -lelf
171 endif !! 184 HOSTLDLIBS_tracex4 += -lrt
172 !! 185 HOSTLDLIBS_trace_output += -lrt
173 TPROGS_CFLAGS += -Wall -O2 !! 186 HOSTLDLIBS_map_perf_test += -lrt
174 TPROGS_CFLAGS += -Wmissing-prototypes !! 187 HOSTLDLIBS_test_overhead += -lrt
175 TPROGS_CFLAGS += -Wstrict-prototypes !! 188 HOSTLDLIBS_xdpsock += -pthread
176 TPROGS_CFLAGS += $(call try-run,\ <<
177 printf "int main() { return 0; }" |\ <<
178 $(CC) -Werror -fsanitize=bounds -x c - <<
179 <<
180 TPROGS_CFLAGS += -I$(objtree)/usr/include <<
181 TPROGS_CFLAGS += -I$(srctree)/tools/testing/se <<
182 TPROGS_CFLAGS += -I$(LIBBPF_INCLUDE) <<
183 TPROGS_CFLAGS += -I$(srctree)/tools/include <<
184 TPROGS_CFLAGS += -I$(srctree)/tools/perf <<
185 TPROGS_CFLAGS += -I$(srctree)/tools/lib <<
186 TPROGS_CFLAGS += -DHAVE_ATTR_TEST=0 <<
187 <<
188 ifdef SYSROOT <<
189 TPROGS_CFLAGS += --sysroot=$(SYSROOT) <<
190 TPROGS_LDFLAGS := -L$(SYSROOT)/usr/lib <<
191 endif <<
192 <<
193 TPROGS_LDLIBS += $(LIBBPF) - <<
194 TPROGLDLIBS_xdp_router_ipv4 += -lm -pthrea <<
195 TPROGLDLIBS_tracex4 += -lrt <<
196 TPROGLDLIBS_trace_output += -lrt <<
197 TPROGLDLIBS_map_perf_test += -lrt <<
198 TPROGLDLIBS_test_overhead += -lrt <<
199 189
200 # Allows pointing LLC/CLANG to a LLVM backend 190 # Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline:
201 # make M=samples/bpf LLC=~/git/llvm-project/ll !! 191 # make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang
202 LLC ?= llc 192 LLC ?= llc
203 CLANG ?= clang 193 CLANG ?= clang
204 OPT ?= opt <<
205 LLVM_DIS ?= llvm-dis <<
206 LLVM_OBJCOPY ?= llvm-objcopy 194 LLVM_OBJCOPY ?= llvm-objcopy
207 LLVM_READELF ?= llvm-readelf <<
208 BTF_PAHOLE ?= pahole 195 BTF_PAHOLE ?= pahole
209 196
210 # Detect that we're cross compiling and use th 197 # Detect that we're cross compiling and use the cross compiler
211 ifdef CROSS_COMPILE 198 ifdef CROSS_COMPILE
212 CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_CO !! 199 HOSTCC = $(CROSS_COMPILE)gcc
>> 200 CLANG_ARCH_ARGS = -target $(ARCH)
213 endif 201 endif
214 202
215 # Don't evaluate probes and warnings if we nee 203 # Don't evaluate probes and warnings if we need to run make recursively
216 ifneq ($(src),) 204 ifneq ($(src),)
217 HDR_PROBE := $(shell printf "$(pound)include < !! 205 HDR_PROBE := $(shell echo "\#include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \
218 $(CC) $(TPROGS_CFLAGS) $(TPROGS_LDFLAG !! 206 $(HOSTCC) $(KBUILD_HOSTCFLAGS) -x c - -o /dev/null 2>/dev/null && \
219 -o /dev/null 2>/dev/null && echo okay) !! 207 echo okay)
220 208
221 ifeq ($(HDR_PROBE),) 209 ifeq ($(HDR_PROBE),)
222 $(warning WARNING: Detected possible issues wi 210 $(warning WARNING: Detected possible issues with include path.)
223 $(warning WARNING: Please install kernel heade 211 $(warning WARNING: Please install kernel headers locally (make headers_install).)
224 endif 212 endif
225 213
226 BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -ma 214 BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
227 BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --he 215 BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
228 BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) - 216 BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
229 BTF_LLVM_PROBE := $(shell echo "int main() { r 217 BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \
230 $(CLANG) --target=bp !! 218 $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \
231 $(LLVM_READELF) -S . !! 219 readelf -S ./llvm_btf_verify.o | grep BTF; \
232 /bin/rm -f ./llvm_bt 220 /bin/rm -f ./llvm_btf_verify.o)
233 221
234 BPF_EXTRA_CFLAGS += -fno-stack-protector <<
235 ifneq ($(BTF_LLVM_PROBE),) 222 ifneq ($(BTF_LLVM_PROBE),)
236 BPF_EXTRA_CFLAGS += -g !! 223 EXTRA_CFLAGS += -g
237 else 224 else
238 ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PRO 225 ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),)
239 BPF_EXTRA_CFLAGS += -g !! 226 EXTRA_CFLAGS += -g
240 LLC_FLAGS += -mattr=dwarfris 227 LLC_FLAGS += -mattr=dwarfris
241 DWARF2BTF = y 228 DWARF2BTF = y
242 endif 229 endif
243 endif 230 endif
244 endif 231 endif
245 232
246 # Trick to allow make to be run from this dire 233 # Trick to allow make to be run from this directory
247 all: 234 all:
248 $(MAKE) -C ../../ M=$(CURDIR) BPF_SAMP !! 235 $(MAKE) -C ../../ $(CURDIR)/ BPF_SAMPLES_PATH=$(CURDIR)
249 236
250 clean: 237 clean:
251 $(MAKE) -C ../../ M=$(CURDIR) clean 238 $(MAKE) -C ../../ M=$(CURDIR) clean
252 @find $(CURDIR) -type f -name '*~' -de !! 239 @rm -f *~
253 @$(RM) -r $(CURDIR)/libbpf $(CURDIR)/b <<
254 240
255 $(LIBBPF): $(wildcard $(LIBBPF_SRC)/*.[ch] $(L !! 241 $(LIBBPF): FORCE
256 # Fix up variables inherited from Kbuild that 242 # Fix up variables inherited from Kbuild that tools/ build system won't like
257 $(MAKE) -C $(LIBBPF_SRC) RM='rm -rf' E !! 243 $(MAKE) -C $(dir $@) RM='rm -rf' LDFLAGS= srctree=$(BPF_SAMPLES_PATH)/../../ O=
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 $@ <<
273 244
274 $(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s F 245 $(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE
275 $(call filechk,offsets,__SYSCALL_NRS_H 246 $(call filechk,offsets,__SYSCALL_NRS_H__)
276 247
277 targets += syscall_nrs.s 248 targets += syscall_nrs.s
278 clean-files += syscall_nrs.h 249 clean-files += syscall_nrs.h
279 250
280 FORCE: 251 FORCE:
281 252
282 253
283 # Verify LLVM compiler tools are available and 254 # Verify LLVM compiler tools are available and bpf target is supported by llc
284 .PHONY: verify_cmds verify_target_bpf $(CLANG) 255 .PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC)
285 256
286 verify_cmds: $(CLANG) $(LLC) 257 verify_cmds: $(CLANG) $(LLC)
287 @for TOOL in $^ ; do \ 258 @for TOOL in $^ ; do \
288 if ! (which -- "$${TOOL}" > /d 259 if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \
289 echo "*** ERROR: Canno 260 echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\
290 exit 1; \ 261 exit 1; \
291 else true; fi; \ 262 else true; fi; \
292 done 263 done
293 264
294 verify_target_bpf: verify_cmds 265 verify_target_bpf: verify_cmds
295 @if ! (${LLC} -march=bpf -mattr=help > 266 @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \
296 echo "*** ERROR: LLVM (${LLC}) 267 echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\
297 echo " NOTICE: LLVM version 268 echo " NOTICE: LLVM version >= 3.7.1 required" ;\
298 exit 2; \ 269 exit 2; \
299 else true; fi 270 else true; fi
300 271
301 $(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(L 272 $(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF)
302 $(src)/*.c: verify_target_bpf $(LIBBPF) 273 $(src)/*.c: verify_target_bpf $(LIBBPF)
303 274
304 libbpf_hdrs: $(LIBBPF) !! 275 $(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 276 $(obj)/hbm_out_kern.o: $(src)/hbm.h $(src)/hbm_kern.h
313 $(obj)/hbm.o: $(src)/hbm.h 277 $(obj)/hbm.o: $(src)/hbm.h
314 $(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm 278 $(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm_kern.h
315 279
316 # Override includes for xdp_sample_user.o beca <<
317 # TPROGS_CFLAGS causes conflicts <<
318 XDP_SAMPLE_CFLAGS += -Wall -O2 \ <<
319 -I$(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 <<
391 # asm/sysreg.h - inline assembly used by it is 280 # asm/sysreg.h - inline assembly used by it is incompatible with llvm.
392 # But, there is no easy way to fix it, so just 281 # But, there is no easy way to fix it, so just exclude it since it is
393 # useless for BPF samples. 282 # 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 283 $(obj)/%.o: $(src)/%.c
400 @echo " CLANG-bpf " $@ 284 @echo " CLANG-bpf " $@
401 $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUX !! 285 $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \
402 -I$(obj) -I$(srctree)/tools/te !! 286 -I$(srctree)/tools/testing/selftests/bpf/ \
403 -I$(LIBBPF_INCLUDE) \ <<
404 -D__KERNEL__ -D__BPF_TRACING__ 287 -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \
405 -D__TARGET_ARCH_$(SRCARCH) -Wn 288 -D__TARGET_ARCH_$(SRCARCH) -Wno-compare-distinct-pointer-types \
406 -Wno-gnu-variable-sized-type-n 289 -Wno-gnu-variable-sized-type-not-at-end \
407 -Wno-address-of-packed-member 290 -Wno-address-of-packed-member -Wno-tautological-compare \
408 -Wno-unknown-warning-option $( 291 -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \
409 -fno-asynchronous-unwind-table <<
410 -I$(srctree)/samples/bpf/ -inc 292 -I$(srctree)/samples/bpf/ -include asm_goto_workaround.h \
411 -O2 -emit-llvm -Xclang -disabl !! 293 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf $(LLC_FLAGS) -filetype=obj -o $@
412 $(OPT) -O2 -mtriple=bpf-pc-lin <<
413 $(LLC) -march=bpf $(LLC_FLAGS) <<
414 ifeq ($(DWARF2BTF),y) 294 ifeq ($(DWARF2BTF),y)
415 $(BTF_PAHOLE) -J $@ 295 $(BTF_PAHOLE) -J $@
416 endif 296 endif
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