Commit | Line | Data |
---|---|---|
b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
787360f8 JK |
2 | |
3 | BPF_SAMPLES_PATH ?= $(abspath $(srctree)/$(src)) | |
4 | TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools | |
5 | ||
929bef46 QM |
6 | pound := \# |
7 | ||
3c731eba | 8 | # List of programs to build |
1d97c6c2 IK |
9 | tprogs-y := test_lru_dist |
10 | tprogs-y += sock_example | |
11 | tprogs-y += fds_example | |
12 | tprogs-y += sockex1 | |
13 | tprogs-y += sockex2 | |
14 | tprogs-y += sockex3 | |
15 | tprogs-y += tracex1 | |
16 | tprogs-y += tracex2 | |
17 | tprogs-y += tracex3 | |
18 | tprogs-y += tracex4 | |
19 | tprogs-y += tracex5 | |
20 | tprogs-y += tracex6 | |
21 | tprogs-y += tracex7 | |
22 | tprogs-y += test_probe_write_user | |
23 | tprogs-y += trace_output | |
24 | tprogs-y += lathist | |
25 | tprogs-y += offwaketime | |
26 | tprogs-y += spintest | |
27 | tprogs-y += map_perf_test | |
28 | tprogs-y += test_overhead | |
29 | tprogs-y += test_cgrp2_array_pin | |
30 | tprogs-y += test_cgrp2_attach | |
31 | tprogs-y += test_cgrp2_sock | |
32 | tprogs-y += test_cgrp2_sock2 | |
1d97c6c2 IK |
33 | tprogs-y += xdp_router_ipv4 |
34 | tprogs-y += test_current_task_under_cgroup | |
35 | tprogs-y += trace_event | |
36 | tprogs-y += sampleip | |
37 | tprogs-y += tc_l2_redirect | |
38 | tprogs-y += lwt_len_hist | |
39 | tprogs-y += xdp_tx_iptunnel | |
40 | tprogs-y += test_map_in_map | |
5984dc6c | 41 | tprogs-y += per_socket_stats_example |
1d97c6c2 IK |
42 | tprogs-y += syscall_tp |
43 | tprogs-y += cpustat | |
44 | tprogs-y += xdp_adjust_tail | |
1d97c6c2 IK |
45 | tprogs-y += xdp_fwd |
46 | tprogs-y += task_fd_query | |
1d97c6c2 IK |
47 | tprogs-y += ibumad |
48 | tprogs-y += hbm | |
3c731eba | 49 | |
43371c83 | 50 | # Libbpf dependencies |
3f7a3318 QM |
51 | LIBBPF_SRC = $(TOOLS_PATH)/lib/bpf |
52 | LIBBPF_OUTPUT = $(abspath $(BPF_SAMPLES_PATH))/libbpf | |
53 | LIBBPF_DESTDIR = $(LIBBPF_OUTPUT) | |
54 | LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include | |
55 | LIBBPF = $(LIBBPF_OUTPUT)/libbpf.a | |
787360f8 | 56 | |
9d1f1594 | 57 | CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o |
28dbf861 | 58 | TRACE_HELPERS := ../../tools/testing/selftests/bpf/trace_helpers.o |
6e1051a5 | 59 | XDP_SAMPLE := xdp_sample_user.o |
43371c83 | 60 | |
1a9b268c JK |
61 | fds_example-objs := fds_example.o |
62 | sockex1-objs := sockex1_user.o | |
63 | sockex2-objs := sockex2_user.o | |
bc1a8597 | 64 | sockex3-objs := sockex3_user.o |
63841bc0 DL |
65 | tracex1-objs := tracex1_user.o $(TRACE_HELPERS) |
66 | tracex2-objs := tracex2_user.o | |
67 | tracex3-objs := tracex3_user.o | |
68 | tracex4-objs := tracex4_user.o | |
bc1a8597 | 69 | tracex5-objs := tracex5_user.o $(TRACE_HELPERS) |
63841bc0 DL |
70 | tracex6-objs := tracex6_user.o |
71 | tracex7-objs := tracex7_user.o | |
3677d0a1 | 72 | test_probe_write_user-objs := test_probe_write_user_user.o |
ceb5dea5 | 73 | trace_output-objs := trace_output_user.o |
3677d0a1 | 74 | lathist-objs := lathist_user.o |
f0c328f8 | 75 | offwaketime-objs := offwaketime_user.o $(TRACE_HELPERS) |
3677d0a1 | 76 | spintest-objs := spintest_user.o $(TRACE_HELPERS) |
35a8b6dd | 77 | map_perf_test-objs := map_perf_test_user.o |
c6497df0 | 78 | test_overhead-objs := test_overhead_user.o |
0cc54db1 JK |
79 | test_cgrp2_array_pin-objs := test_cgrp2_array_pin.o |
80 | test_cgrp2_attach-objs := test_cgrp2_attach.o | |
0cc54db1 | 81 | test_cgrp2_sock-objs := test_cgrp2_sock.o |
d89af13c | 82 | test_cgrp2_sock2-objs := test_cgrp2_sock2.o |
3677d0a1 | 83 | test_current_task_under_cgroup-objs := $(CGROUP_HELPERS) \ |
9e6e60ec | 84 | test_current_task_under_cgroup_user.o |
aa5e2af6 DL |
85 | trace_event-objs := trace_event_user.o $(TRACE_HELPERS) |
86 | sampleip-objs := sampleip_user.o $(TRACE_HELPERS) | |
ceb5dea5 DL |
87 | tc_l2_redirect-objs := tc_l2_redirect_user.o |
88 | lwt_len_hist-objs := lwt_len_hist_user.o | |
bbaf6029 | 89 | xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o |
88795b4a | 90 | test_map_in_map-objs := test_map_in_map_user.o |
0cc54db1 | 91 | per_socket_stats_example-objs := cookie_uid_helper_example.o |
f0c328f8 DL |
92 | syscall_tp-objs := syscall_tp_user.o |
93 | cpustat-objs := cpustat_user.o | |
0cc54db1 | 94 | xdp_adjust_tail-objs := xdp_adjust_tail_user.o |
e1a40ef4 | 95 | xdp_fwd-objs := xdp_fwd_user.o |
4fe66415 | 96 | task_fd_query-objs := task_fd_query_user.o $(TRACE_HELPERS) |
763af200 | 97 | ibumad-objs := ibumad_user.o |
c5815ac7 | 98 | hbm-objs := hbm.o $(CGROUP_HELPERS) |
3c731eba | 99 | |
85bf1f51 | 100 | xdp_router_ipv4-objs := xdp_router_ipv4_user.o $(XDP_SAMPLE) |
6e1051a5 | 101 | |
3c731eba | 102 | # Tell kbuild to always build the programs |
5f2fb52f MY |
103 | always-y := $(tprogs-y) |
104 | always-y += sockex1_kern.o | |
105 | always-y += sockex2_kern.o | |
106 | always-y += sockex3_kern.o | |
4a0ee788 | 107 | always-y += tracex1.bpf.o |
d4fffba4 | 108 | always-y += tracex2.bpf.o |
4a0ee788 DL |
109 | always-y += tracex3.bpf.o |
110 | always-y += tracex4.bpf.o | |
111 | always-y += tracex5.bpf.o | |
112 | always-y += tracex6.bpf.o | |
113 | always-y += tracex7.bpf.o | |
e04946f5 | 114 | always-y += sock_flags.bpf.o |
d4fffba4 DL |
115 | always-y += test_probe_write_user.bpf.o |
116 | always-y += trace_output.bpf.o | |
5f2fb52f MY |
117 | always-y += tcbpf1_kern.o |
118 | always-y += tc_l2_redirect_kern.o | |
119 | always-y += lathist_kern.o | |
4a0ee788 DL |
120 | always-y += offwaketime.bpf.o |
121 | always-y += spintest.bpf.o | |
d4fffba4 | 122 | always-y += map_perf_test.bpf.o |
e04946f5 DL |
123 | always-y += test_overhead_tp.bpf.o |
124 | always-y += test_overhead_raw_tp.bpf.o | |
125 | always-y += test_overhead_kprobe.bpf.o | |
5f2fb52f | 126 | always-y += parse_varlen.o parse_simple.o parse_ldabs.o |
e04946f5 | 127 | always-y += test_cgrp2_tc.bpf.o |
d4fffba4 | 128 | always-y += test_current_task_under_cgroup.bpf.o |
5f2fb52f MY |
129 | always-y += trace_event_kern.o |
130 | always-y += sampleip_kern.o | |
e04946f5 | 131 | always-y += lwt_len_hist.bpf.o |
5f2fb52f | 132 | always-y += xdp_tx_iptunnel_kern.o |
e04946f5 | 133 | always-y += test_map_in_map.bpf.o |
5f2fb52f MY |
134 | always-y += tcp_synrto_kern.o |
135 | always-y += tcp_rwnd_kern.o | |
136 | always-y += tcp_bufs_kern.o | |
137 | always-y += tcp_cong_kern.o | |
138 | always-y += tcp_iw_kern.o | |
139 | always-y += tcp_clamp_kern.o | |
140 | always-y += tcp_basertt_kern.o | |
141 | always-y += tcp_tos_reflect_kern.o | |
142 | always-y += tcp_dumpstats_kern.o | |
5f2fb52f MY |
143 | always-y += xdp2skb_meta_kern.o |
144 | always-y += syscall_tp_kern.o | |
145 | always-y += cpustat_kern.o | |
146 | always-y += xdp_adjust_tail_kern.o | |
147 | always-y += xdp_fwd_kern.o | |
148 | always-y += task_fd_query_kern.o | |
5f2fb52f MY |
149 | always-y += ibumad_kern.o |
150 | always-y += hbm_out_kern.o | |
151 | always-y += hbm_edt_kern.o | |
3c731eba | 152 | |
870f09f1 VM |
153 | TPROGS_CFLAGS = $(TPROGS_USER_CFLAGS) |
154 | TPROGS_LDFLAGS = $(TPROGS_USER_LDFLAGS) | |
155 | ||
0e865aed IK |
156 | ifeq ($(ARCH), arm) |
157 | # Strip all except -D__LINUX_ARM_ARCH__ option needed to handle linux | |
158 | # headers when arm instruction set identification is requested. | |
159 | ARM_ARCH_SELECTOR := $(filter -D__LINUX_ARM_ARCH__%, $(KBUILD_CFLAGS)) | |
160 | BPF_EXTRA_CFLAGS := $(ARM_ARCH_SELECTOR) | |
1d97c6c2 | 161 | TPROGS_CFLAGS += $(ARM_ARCH_SELECTOR) |
0e865aed IK |
162 | endif |
163 | ||
190d1c92 TY |
164 | ifeq ($(ARCH), mips) |
165 | TPROGS_CFLAGS += -D__SANE_USERSPACE_TYPES__ | |
058107ab TY |
166 | ifdef CONFIG_MACH_LOONGSON64 |
167 | BPF_EXTRA_CFLAGS += -I$(srctree)/arch/mips/include/asm/mach-loongson64 | |
168 | BPF_EXTRA_CFLAGS += -I$(srctree)/arch/mips/include/asm/mach-generic | |
169 | endif | |
190d1c92 TY |
170 | endif |
171 | ||
10cb3d87 IK |
172 | TPROGS_CFLAGS += -Wall -O2 |
173 | TPROGS_CFLAGS += -Wmissing-prototypes | |
174 | TPROGS_CFLAGS += -Wstrict-prototypes | |
9e09b750 RQ |
175 | TPROGS_CFLAGS += $(call try-run,\ |
176 | printf "int main() { return 0; }" |\ | |
177 | $(CC) -Werror -fsanitize=bounds -x c - -o "$$TMP",-fsanitize=bounds,) | |
10cb3d87 | 178 | |
1d97c6c2 | 179 | TPROGS_CFLAGS += -I$(objtree)/usr/include |
1d97c6c2 | 180 | TPROGS_CFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ |
3f7a3318 | 181 | TPROGS_CFLAGS += -I$(LIBBPF_INCLUDE) |
1d97c6c2 IK |
182 | TPROGS_CFLAGS += -I$(srctree)/tools/include |
183 | TPROGS_CFLAGS += -I$(srctree)/tools/perf | |
c698eaeb | 184 | TPROGS_CFLAGS += -I$(srctree)/tools/lib |
14684b93 | 185 | TPROGS_CFLAGS += -DHAVE_ATTR_TEST=0 |
1d97c6c2 | 186 | |
b2327c10 IK |
187 | ifdef SYSROOT |
188 | TPROGS_CFLAGS += --sysroot=$(SYSROOT) | |
189 | TPROGS_LDFLAGS := -L$(SYSROOT)/usr/lib | |
190 | endif | |
191 | ||
5615ed47 | 192 | TPROGS_LDLIBS += $(LIBBPF) -lelf -lz |
587323cf | 193 | TPROGLDLIBS_xdp_router_ipv4 += -lm -pthread |
1d97c6c2 IK |
194 | TPROGLDLIBS_tracex4 += -lrt |
195 | TPROGLDLIBS_trace_output += -lrt | |
196 | TPROGLDLIBS_map_perf_test += -lrt | |
197 | TPROGLDLIBS_test_overhead += -lrt | |
1d97c6c2 | 198 | |
bdefbbf2 | 199 | # Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: |
628add78 | 200 | # make M=samples/bpf LLC=~/git/llvm-project/llvm/build/bin/llc CLANG=~/git/llvm-project/llvm/build/bin/clang |
6ccfba75 | 201 | LLC ?= llc |
bdefbbf2 | 202 | CLANG ?= clang |
9618bde4 YS |
203 | OPT ?= opt |
204 | LLVM_DIS ?= llvm-dis | |
9778cfdf | 205 | LLVM_OBJCOPY ?= llvm-objcopy |
44ce0ac1 | 206 | LLVM_READELF ?= llvm-readelf |
9778cfdf | 207 | BTF_PAHOLE ?= pahole |
6ccfba75 | 208 | |
876e88e3 JF |
209 | # Detect that we're cross compiling and use the cross compiler |
210 | ifdef CROSS_COMPILE | |
518c1340 | 211 | CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_COMPILE:%-=%)) |
876e88e3 JF |
212 | endif |
213 | ||
0ed3cc4a JK |
214 | # Don't evaluate probes and warnings if we need to run make recursively |
215 | ifneq ($(src),) | |
929bef46 | 216 | HDR_PROBE := $(shell printf "$(pound)include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \ |
a833effa IK |
217 | $(CC) $(TPROGS_CFLAGS) $(TPROGS_LDFLAGS) -x c - \ |
218 | -o /dev/null 2>/dev/null && echo okay) | |
07c3bbdb JK |
219 | |
220 | ifeq ($(HDR_PROBE),) | |
221 | $(warning WARNING: Detected possible issues with include path.) | |
222 | $(warning WARNING: Please install kernel headers locally (make headers_install).) | |
223 | endif | |
224 | ||
9778cfdf TS |
225 | BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) |
226 | BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) | |
227 | BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') | |
9ce6ae22 | 228 | BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ |
bbaf1ff0 | 229 | $(CLANG) --target=bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ |
44ce0ac1 | 230 | $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \ |
9ce6ae22 | 231 | /bin/rm -f ./llvm_btf_verify.o) |
9778cfdf | 232 | |
45027897 | 233 | BPF_EXTRA_CFLAGS += -fno-stack-protector |
9ce6ae22 | 234 | ifneq ($(BTF_LLVM_PROBE),) |
2a560df7 | 235 | BPF_EXTRA_CFLAGS += -g |
9ce6ae22 | 236 | else |
9778cfdf | 237 | ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),) |
2a560df7 | 238 | BPF_EXTRA_CFLAGS += -g |
9778cfdf TS |
239 | LLC_FLAGS += -mattr=dwarfris |
240 | DWARF2BTF = y | |
241 | endif | |
9ce6ae22 | 242 | endif |
0ed3cc4a | 243 | endif |
9778cfdf | 244 | |
b62a796c | 245 | # Trick to allow make to be run from this directory |
787360f8 | 246 | all: |
6cc2c876 | 247 | $(MAKE) -C ../../ M=$(CURDIR) BPF_SAMPLES_PATH=$(CURDIR) |
b62a796c JDB |
248 | |
249 | clean: | |
e19b7cee | 250 | $(MAKE) -C ../../ M=$(CURDIR) clean |
b2e5e93a | 251 | @find $(CURDIR) -type f -name '*~' -delete |
3f7a3318 | 252 | @$(RM) -r $(CURDIR)/libbpf $(CURDIR)/bpftool |
b62a796c | 253 | |
a60d24e7 | 254 | $(LIBBPF): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OUTPUT) |
787360f8 | 255 | # Fix up variables inherited from Kbuild that tools/ build system won't like |
3f7a3318 | 256 | $(MAKE) -C $(LIBBPF_SRC) RM='rm -rf' EXTRA_CFLAGS="$(TPROGS_CFLAGS)" \ |
f56bcfad | 257 | LDFLAGS="$(TPROGS_LDFLAGS)" srctree=$(BPF_SAMPLES_PATH)/../../ \ |
3f7a3318 QM |
258 | O= OUTPUT=$(LIBBPF_OUTPUT)/ DESTDIR=$(LIBBPF_DESTDIR) prefix= \ |
259 | $@ install_headers | |
c25ef6a5 | 260 | |
384b6b3b | 261 | BPFTOOLDIR := $(TOOLS_PATH)/bpf/bpftool |
3f7a3318 | 262 | BPFTOOL_OUTPUT := $(abspath $(BPF_SAMPLES_PATH))/bpftool |
37db10bc VM |
263 | DEFAULT_BPFTOOL := $(BPFTOOL_OUTPUT)/bootstrap/bpftool |
264 | BPFTOOL ?= $(DEFAULT_BPFTOOL) | |
265 | $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) | $(BPFTOOL_OUTPUT) | |
2e496628 PL |
266 | $(MAKE) -C $(BPFTOOLDIR) srctree=$(BPF_SAMPLES_PATH)/../../ \ |
267 | OUTPUT=$(BPFTOOL_OUTPUT)/ bootstrap | |
3f7a3318 QM |
268 | |
269 | $(LIBBPF_OUTPUT) $(BPFTOOL_OUTPUT): | |
270 | $(call msg,MKDIR,$@) | |
271 | $(Q)mkdir -p $@ | |
384b6b3b | 272 | |
4b7190e8 DD |
273 | $(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE |
274 | $(call filechk,offsets,__SYSCALL_NRS_H__) | |
275 | ||
2c667d77 | 276 | targets += syscall_nrs.s |
4b7190e8 DD |
277 | clean-files += syscall_nrs.h |
278 | ||
279 | FORCE: | |
280 | ||
281 | ||
bdefbbf2 JDB |
282 | # Verify LLVM compiler tools are available and bpf target is supported by llc |
283 | .PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) | |
7b01dd57 | 284 | |
bdefbbf2 JDB |
285 | verify_cmds: $(CLANG) $(LLC) |
286 | @for TOOL in $^ ; do \ | |
287 | if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ | |
288 | echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ | |
289 | exit 1; \ | |
290 | else true; fi; \ | |
291 | done | |
7b01dd57 | 292 | |
bdefbbf2 | 293 | verify_target_bpf: verify_cmds |
7b01dd57 JDB |
294 | @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ |
295 | echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ | |
296 | echo " NOTICE: LLVM version >= 3.7.1 required" ;\ | |
297 | exit 2; \ | |
298 | else true; fi | |
299 | ||
787360f8 JK |
300 | $(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF) |
301 | $(src)/*.c: verify_target_bpf $(LIBBPF) | |
7b01dd57 | 302 | |
3f7a3318 | 303 | libbpf_hdrs: $(LIBBPF) |
527024f7 | 304 | $(obj)/$(TRACE_HELPERS) $(obj)/$(CGROUP_HELPERS) $(obj)/$(XDP_SAMPLE): | libbpf_hdrs |
3f7a3318 QM |
305 | |
306 | .PHONY: libbpf_hdrs | |
307 | ||
85bf1f51 | 308 | $(obj)/xdp_router_ipv4_user.o: $(obj)/xdp_router_ipv4.skel.h |
6e1051a5 | 309 | |
4a0ee788 | 310 | $(obj)/tracex5.bpf.o: $(obj)/syscall_nrs.h |
187d0738 | 311 | $(obj)/hbm_out_kern.o: $(src)/hbm.h $(src)/hbm_kern.h |
a1270fe9 | 312 | $(obj)/hbm.o: $(src)/hbm.h |
71634d7f | 313 | $(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm_kern.h |
4b7190e8 | 314 | |
527024f7 AN |
315 | # Override includes for xdp_sample_user.o because $(srctree)/usr/include in |
316 | # TPROGS_CFLAGS causes conflicts | |
e64fbcaa | 317 | XDP_SAMPLE_CFLAGS += -Wall -O2 \ |
527024f7 AN |
318 | -I$(src)/../../tools/include \ |
319 | -I$(src)/../../tools/include/uapi \ | |
320 | -I$(LIBBPF_INCLUDE) \ | |
321 | -I$(src)/../../tools/testing/selftests/bpf | |
322 | ||
870f09f1 | 323 | $(obj)/$(XDP_SAMPLE): TPROGS_CFLAGS = $(XDP_SAMPLE_CFLAGS) $(TPROGS_USER_CFLAGS) |
527024f7 | 324 | $(obj)/$(XDP_SAMPLE): $(src)/xdp_sample_user.h $(src)/xdp_sample_shared.h |
c698eaeb RT |
325 | # Override includes for trace_helpers.o because __must_check won't be defined |
326 | # in our include path. | |
327 | $(obj)/$(TRACE_HELPERS): TPROGS_CFLAGS := $(TPROGS_CFLAGS) -D__must_check= | |
527024f7 | 328 | |
1d97c6c2 IK |
329 | -include $(BPF_SAMPLES_PATH)/Makefile.target |
330 | ||
571fa247 KKD |
331 | VMLINUX_BTF_PATHS ?= $(abspath $(if $(O),$(O)/vmlinux)) \ |
332 | $(abspath $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)) \ | |
333 | $(abspath ./vmlinux) | |
384b6b3b KKD |
334 | VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) |
335 | ||
384b6b3b KKD |
336 | $(obj)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) |
337 | ifeq ($(VMLINUX_H),) | |
ec247044 JM |
338 | ifeq ($(VMLINUX_BTF),) |
339 | $(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)",\ | |
340 | build the kernel or set VMLINUX_BTF or VMLINUX_H variable) | |
341 | endif | |
384b6b3b KKD |
342 | $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ |
343 | else | |
344 | $(Q)cp "$(VMLINUX_H)" $@ | |
345 | endif | |
346 | ||
347 | clean-files += vmlinux.h | |
348 | ||
3f199560 | 349 | # Get Clang's default includes on this system, as opposed to those seen by |
bbaf1ff0 | 350 | # '--target=bpf'. This fixes "missing" files on some architectures/distros, |
3f199560 KKD |
351 | # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. |
352 | # | |
353 | # Use '-idirafter': Don't interfere with include mechanics except where the | |
354 | # build would have failed anyways. | |
355 | define get_sys_includes | |
356 | $(shell $(1) -v -E - </dev/null 2>&1 \ | |
357 | | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ | |
358 | $(shell $(1) -dM -E - </dev/null | grep '#define __riscv_xlen ' | sed 's/#define /-D/' | sed 's/ /=/') | |
359 | endef | |
360 | ||
361 | CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) | |
362 | ||
85bf1f51 | 363 | $(obj)/xdp_router_ipv4.bpf.o: $(obj)/xdp_sample.bpf.o |
3f199560 KKD |
364 | |
365 | $(obj)/%.bpf.o: $(src)/%.bpf.c $(obj)/vmlinux.h $(src)/xdp_sample.bpf.h $(src)/xdp_sample_shared.h | |
366 | @echo " CLANG-BPF " $@ | |
bbaf1ff0 | 367 | $(Q)$(CLANG) -g -O2 --target=bpf -D__TARGET_ARCH_$(SRCARCH) \ |
3f199560 KKD |
368 | -Wno-compare-distinct-pointer-types -I$(srctree)/include \ |
369 | -I$(srctree)/samples/bpf -I$(srctree)/tools/include \ | |
3f7a3318 | 370 | -I$(LIBBPF_INCLUDE) $(CLANG_SYS_INCLUDES) \ |
3f199560 KKD |
371 | -c $(filter %.bpf.c,$^) -o $@ |
372 | ||
91dda69b | 373 | LINKED_SKELS := xdp_router_ipv4.skel.h |
3f199560 KKD |
374 | clean-files += $(LINKED_SKELS) |
375 | ||
85bf1f51 | 376 | xdp_router_ipv4.skel.h-deps := xdp_router_ipv4.bpf.o xdp_sample.bpf.o |
3f199560 KKD |
377 | |
378 | LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.bpf.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps))) | |
379 | ||
380 | BPF_SRCS_LINKED := $(notdir $(wildcard $(src)/*.bpf.c)) | |
381 | BPF_OBJS_LINKED := $(patsubst %.bpf.c,$(obj)/%.bpf.o, $(BPF_SRCS_LINKED)) | |
382 | BPF_SKELS_LINKED := $(addprefix $(obj)/,$(LINKED_SKELS)) | |
383 | ||
384 | $(BPF_SKELS_LINKED): $(BPF_OBJS_LINKED) $(BPFTOOL) | |
385 | @echo " BPF GEN-OBJ " $(@:.skel.h=) | |
386 | $(Q)$(BPFTOOL) gen object $(@:.skel.h=.lbpf.o) $(addprefix $(obj)/,$($(@F)-deps)) | |
387 | @echo " BPF GEN-SKEL" $(@:.skel.h=) | |
388 | $(Q)$(BPFTOOL) gen skeleton $(@:.skel.h=.lbpf.o) name $(notdir $(@:.skel.h=)) > $@ | |
389 | ||
128d1514 NR |
390 | # asm/sysreg.h - inline assembly used by it is incompatible with llvm. |
391 | # But, there is no easy way to fix it, so just exclude it since it is | |
30b50aa6 | 392 | # useless for BPF samples. |
9618bde4 YS |
393 | # below we use long chain of commands, clang | opt | llvm-dis | llc, |
394 | # to generate final object file. 'clang' compiles the source into IR | |
395 | # with native target, e.g., x64, arm64, etc. 'opt' does bpf CORE IR builtin | |
396 | # processing (llvm12) and IR optimizations. 'llvm-dis' converts | |
397 | # 'opt' output to IR, and finally 'llc' generates bpf byte code. | |
b88c06e3 | 398 | $(obj)/%.o: $(src)/%.c |
768759ed | 399 | @echo " CLANG-bpf " $@ |
2a560df7 IK |
400 | $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(BPF_EXTRA_CFLAGS) \ |
401 | -I$(obj) -I$(srctree)/tools/testing/selftests/bpf/ \ | |
3f7a3318 | 402 | -I$(LIBBPF_INCLUDE) \ |
b1ae32db | 403 | -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \ |
81f522f9 | 404 | -D__TARGET_ARCH_$(SRCARCH) -Wno-compare-distinct-pointer-types \ |
69a9d09b AS |
405 | -Wno-gnu-variable-sized-type-not-at-end \ |
406 | -Wno-address-of-packed-member -Wno-tautological-compare \ | |
9db95838 | 407 | -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \ |
34f6e38f | 408 | -fno-asynchronous-unwind-tables -fcf-protection \ |
6bf3bbe1 | 409 | -I$(srctree)/samples/bpf/ -include asm_goto_workaround.h \ |
9618bde4 YS |
410 | -O2 -emit-llvm -Xclang -disable-llvm-passes -c $< -o - | \ |
411 | $(OPT) -O2 -mtriple=bpf-pc-linux | $(LLVM_DIS) | \ | |
412 | $(LLC) -march=bpf $(LLC_FLAGS) -filetype=obj -o $@ | |
9778cfdf TS |
413 | ifeq ($(DWARF2BTF),y) |
414 | $(BTF_PAHOLE) -J $@ | |
415 | endif |