xref: /openbmc/linux/samples/bpf/Makefile (revision ba61bb17)
1# SPDX-License-Identifier: GPL-2.0
2
3BPF_SAMPLES_PATH ?= $(abspath $(srctree)/$(src))
4TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools
5
6# List of programs to build
7hostprogs-y := test_lru_dist
8hostprogs-y += sock_example
9hostprogs-y += fds_example
10hostprogs-y += sockex1
11hostprogs-y += sockex2
12hostprogs-y += sockex3
13hostprogs-y += tracex1
14hostprogs-y += tracex2
15hostprogs-y += tracex3
16hostprogs-y += tracex4
17hostprogs-y += tracex5
18hostprogs-y += tracex6
19hostprogs-y += tracex7
20hostprogs-y += test_probe_write_user
21hostprogs-y += trace_output
22hostprogs-y += lathist
23hostprogs-y += offwaketime
24hostprogs-y += spintest
25hostprogs-y += map_perf_test
26hostprogs-y += test_overhead
27hostprogs-y += test_cgrp2_array_pin
28hostprogs-y += test_cgrp2_attach
29hostprogs-y += test_cgrp2_attach2
30hostprogs-y += test_cgrp2_sock
31hostprogs-y += test_cgrp2_sock2
32hostprogs-y += xdp1
33hostprogs-y += xdp2
34hostprogs-y += xdp_router_ipv4
35hostprogs-y += test_current_task_under_cgroup
36hostprogs-y += trace_event
37hostprogs-y += sampleip
38hostprogs-y += tc_l2_redirect
39hostprogs-y += lwt_len_hist
40hostprogs-y += xdp_tx_iptunnel
41hostprogs-y += test_map_in_map
42hostprogs-y += per_socket_stats_example
43hostprogs-y += load_sock_ops
44hostprogs-y += xdp_redirect
45hostprogs-y += xdp_redirect_map
46hostprogs-y += xdp_redirect_cpu
47hostprogs-y += xdp_monitor
48hostprogs-y += xdp_rxq_info
49hostprogs-y += syscall_tp
50hostprogs-y += cpustat
51hostprogs-y += xdp_adjust_tail
52hostprogs-y += xdpsock
53hostprogs-y += xdp_fwd
54hostprogs-y += task_fd_query
55
56# Libbpf dependencies
57LIBBPF = $(TOOLS_PATH)/lib/bpf/libbpf.a
58
59CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o
60TRACE_HELPERS := ../../tools/testing/selftests/bpf/trace_helpers.o
61
62fds_example-objs := bpf_load.o fds_example.o
63sockex1-objs := bpf_load.o sockex1_user.o
64sockex2-objs := bpf_load.o sockex2_user.o
65sockex3-objs := bpf_load.o sockex3_user.o
66tracex1-objs := bpf_load.o tracex1_user.o
67tracex2-objs := bpf_load.o tracex2_user.o
68tracex3-objs := bpf_load.o tracex3_user.o
69tracex4-objs := bpf_load.o tracex4_user.o
70tracex5-objs := bpf_load.o tracex5_user.o
71tracex6-objs := bpf_load.o tracex6_user.o
72tracex7-objs := bpf_load.o tracex7_user.o
73load_sock_ops-objs := bpf_load.o load_sock_ops.o
74test_probe_write_user-objs := bpf_load.o test_probe_write_user_user.o
75trace_output-objs := bpf_load.o trace_output_user.o $(TRACE_HELPERS)
76lathist-objs := bpf_load.o lathist_user.o
77offwaketime-objs := bpf_load.o offwaketime_user.o $(TRACE_HELPERS)
78spintest-objs := bpf_load.o spintest_user.o $(TRACE_HELPERS)
79map_perf_test-objs := bpf_load.o map_perf_test_user.o
80test_overhead-objs := bpf_load.o test_overhead_user.o
81test_cgrp2_array_pin-objs := test_cgrp2_array_pin.o
82test_cgrp2_attach-objs := test_cgrp2_attach.o
83test_cgrp2_attach2-objs := test_cgrp2_attach2.o $(CGROUP_HELPERS)
84test_cgrp2_sock-objs := test_cgrp2_sock.o
85test_cgrp2_sock2-objs := bpf_load.o test_cgrp2_sock2.o
86xdp1-objs := xdp1_user.o
87# reuse xdp1 source intentionally
88xdp2-objs := xdp1_user.o
89xdp_router_ipv4-objs := bpf_load.o xdp_router_ipv4_user.o
90test_current_task_under_cgroup-objs := bpf_load.o $(CGROUP_HELPERS) \
91				       test_current_task_under_cgroup_user.o
92trace_event-objs := bpf_load.o trace_event_user.o $(TRACE_HELPERS)
93sampleip-objs := bpf_load.o sampleip_user.o $(TRACE_HELPERS)
94tc_l2_redirect-objs := bpf_load.o tc_l2_redirect_user.o
95lwt_len_hist-objs := bpf_load.o lwt_len_hist_user.o
96xdp_tx_iptunnel-objs := bpf_load.o xdp_tx_iptunnel_user.o
97test_map_in_map-objs := bpf_load.o test_map_in_map_user.o
98per_socket_stats_example-objs := cookie_uid_helper_example.o
99xdp_redirect-objs := bpf_load.o xdp_redirect_user.o
100xdp_redirect_map-objs := bpf_load.o xdp_redirect_map_user.o
101xdp_redirect_cpu-objs := bpf_load.o xdp_redirect_cpu_user.o
102xdp_monitor-objs := bpf_load.o xdp_monitor_user.o
103xdp_rxq_info-objs := xdp_rxq_info_user.o
104syscall_tp-objs := bpf_load.o syscall_tp_user.o
105cpustat-objs := bpf_load.o cpustat_user.o
106xdp_adjust_tail-objs := xdp_adjust_tail_user.o
107xdpsock-objs := bpf_load.o xdpsock_user.o
108xdp_fwd-objs := bpf_load.o xdp_fwd_user.o
109task_fd_query-objs := bpf_load.o task_fd_query_user.o $(TRACE_HELPERS)
110
111# Tell kbuild to always build the programs
112always := $(hostprogs-y)
113always += sockex1_kern.o
114always += sockex2_kern.o
115always += sockex3_kern.o
116always += tracex1_kern.o
117always += tracex2_kern.o
118always += tracex3_kern.o
119always += tracex4_kern.o
120always += tracex5_kern.o
121always += tracex6_kern.o
122always += tracex7_kern.o
123always += sock_flags_kern.o
124always += test_probe_write_user_kern.o
125always += trace_output_kern.o
126always += tcbpf1_kern.o
127always += tc_l2_redirect_kern.o
128always += lathist_kern.o
129always += offwaketime_kern.o
130always += spintest_kern.o
131always += map_perf_test_kern.o
132always += test_overhead_tp_kern.o
133always += test_overhead_raw_tp_kern.o
134always += test_overhead_kprobe_kern.o
135always += parse_varlen.o parse_simple.o parse_ldabs.o
136always += test_cgrp2_tc_kern.o
137always += xdp1_kern.o
138always += xdp2_kern.o
139always += xdp_router_ipv4_kern.o
140always += test_current_task_under_cgroup_kern.o
141always += trace_event_kern.o
142always += sampleip_kern.o
143always += lwt_len_hist_kern.o
144always += xdp_tx_iptunnel_kern.o
145always += test_map_in_map_kern.o
146always += cookie_uid_helper_example.o
147always += tcp_synrto_kern.o
148always += tcp_rwnd_kern.o
149always += tcp_bufs_kern.o
150always += tcp_cong_kern.o
151always += tcp_iw_kern.o
152always += tcp_clamp_kern.o
153always += tcp_basertt_kern.o
154always += xdp_redirect_kern.o
155always += xdp_redirect_map_kern.o
156always += xdp_redirect_cpu_kern.o
157always += xdp_monitor_kern.o
158always += xdp_rxq_info_kern.o
159always += xdp2skb_meta_kern.o
160always += syscall_tp_kern.o
161always += cpustat_kern.o
162always += xdp_adjust_tail_kern.o
163always += xdpsock_kern.o
164always += xdp_fwd_kern.o
165always += task_fd_query_kern.o
166
167HOSTCFLAGS += -I$(objtree)/usr/include
168HOSTCFLAGS += -I$(srctree)/tools/lib/
169HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/
170HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include
171HOSTCFLAGS += -I$(srctree)/tools/perf
172
173HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable
174HOSTCFLAGS_trace_helpers.o += -I$(srctree)/tools/lib/bpf/
175
176HOSTCFLAGS_trace_output_user.o += -I$(srctree)/tools/lib/bpf/
177HOSTCFLAGS_offwaketime_user.o += -I$(srctree)/tools/lib/bpf/
178HOSTCFLAGS_spintest_user.o += -I$(srctree)/tools/lib/bpf/
179HOSTCFLAGS_trace_event_user.o += -I$(srctree)/tools/lib/bpf/
180HOSTCFLAGS_sampleip_user.o += -I$(srctree)/tools/lib/bpf/
181HOSTCFLAGS_task_fd_query_user.o += -I$(srctree)/tools/lib/bpf/
182
183HOST_LOADLIBES		+= $(LIBBPF) -lelf
184HOSTLOADLIBES_tracex4		+= -lrt
185HOSTLOADLIBES_trace_output	+= -lrt
186HOSTLOADLIBES_map_perf_test	+= -lrt
187HOSTLOADLIBES_test_overhead	+= -lrt
188HOSTLOADLIBES_xdpsock		+= -pthread
189
190# Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline:
191#  make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang
192LLC ?= llc
193CLANG ?= clang
194
195# Detect that we're cross compiling and use the cross compiler
196ifdef CROSS_COMPILE
197HOSTCC = $(CROSS_COMPILE)gcc
198CLANG_ARCH_ARGS = -target $(ARCH)
199endif
200
201# Trick to allow make to be run from this directory
202all:
203	$(MAKE) -C ../../ $(CURDIR)/ BPF_SAMPLES_PATH=$(CURDIR)
204
205clean:
206	$(MAKE) -C ../../ M=$(CURDIR) clean
207	@rm -f *~
208
209$(LIBBPF): FORCE
210# Fix up variables inherited from Kbuild that tools/ build system won't like
211	$(MAKE) -C $(dir $@) RM='rm -rf' LDFLAGS= srctree=$(BPF_SAMPLES_PATH)/../../ O=
212
213$(obj)/syscall_nrs.s:	$(src)/syscall_nrs.c
214	$(call if_changed_dep,cc_s_c)
215
216$(obj)/syscall_nrs.h:	$(obj)/syscall_nrs.s FORCE
217	$(call filechk,offsets,__SYSCALL_NRS_H__)
218
219clean-files += syscall_nrs.h
220
221FORCE:
222
223
224# Verify LLVM compiler tools are available and bpf target is supported by llc
225.PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC)
226
227verify_cmds: $(CLANG) $(LLC)
228	@for TOOL in $^ ; do \
229		if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \
230			echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\
231			exit 1; \
232		else true; fi; \
233	done
234
235verify_target_bpf: verify_cmds
236	@if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \
237		echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\
238		echo "   NOTICE: LLVM version >= 3.7.1 required" ;\
239		exit 2; \
240	else true; fi
241
242$(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF)
243$(src)/*.c: verify_target_bpf $(LIBBPF)
244
245$(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h
246
247# asm/sysreg.h - inline assembly used by it is incompatible with llvm.
248# But, there is no easy way to fix it, so just exclude it since it is
249# useless for BPF samples.
250$(obj)/%.o: $(src)/%.c
251	@echo "  CLANG-bpf " $@
252	$(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \
253		-I$(srctree)/tools/testing/selftests/bpf/ \
254		-D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \
255		-D__TARGET_ARCH_$(ARCH) -Wno-compare-distinct-pointer-types \
256		-Wno-gnu-variable-sized-type-not-at-end \
257		-Wno-address-of-packed-member -Wno-tautological-compare \
258		-Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \
259		-O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@
260