| 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | |
| 3 | BPF_SAMPLES_PATH ?= $(abspath $(srctree)/$(src)) |
| 4 | TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools |
| 5 | |
| 6 | # List of programs to build |
| 7 | hostprogs-y := test_lru_dist |
| 8 | hostprogs-y += sock_example |
| 9 | hostprogs-y += fds_example |
| 10 | hostprogs-y += sockex1 |
| 11 | hostprogs-y += sockex2 |
| 12 | hostprogs-y += sockex3 |
| 13 | hostprogs-y += tracex1 |
| 14 | hostprogs-y += tracex2 |
| 15 | hostprogs-y += tracex3 |
| 16 | hostprogs-y += tracex4 |
| 17 | hostprogs-y += tracex5 |
| 18 | hostprogs-y += tracex6 |
| 19 | hostprogs-y += tracex7 |
| 20 | hostprogs-y += test_probe_write_user |
| 21 | hostprogs-y += trace_output |
| 22 | hostprogs-y += lathist |
| 23 | hostprogs-y += offwaketime |
| 24 | hostprogs-y += spintest |
| 25 | hostprogs-y += map_perf_test |
| 26 | hostprogs-y += test_overhead |
| 27 | hostprogs-y += test_cgrp2_array_pin |
| 28 | hostprogs-y += test_cgrp2_attach |
| 29 | hostprogs-y += test_cgrp2_attach2 |
| 30 | hostprogs-y += test_cgrp2_sock |
| 31 | hostprogs-y += test_cgrp2_sock2 |
| 32 | hostprogs-y += xdp1 |
| 33 | hostprogs-y += xdp2 |
| 34 | hostprogs-y += xdp_router_ipv4 |
| 35 | hostprogs-y += test_current_task_under_cgroup |
| 36 | hostprogs-y += trace_event |
| 37 | hostprogs-y += sampleip |
| 38 | hostprogs-y += tc_l2_redirect |
| 39 | hostprogs-y += lwt_len_hist |
| 40 | hostprogs-y += xdp_tx_iptunnel |
| 41 | hostprogs-y += test_map_in_map |
| 42 | hostprogs-y += per_socket_stats_example |
| 43 | hostprogs-y += load_sock_ops |
| 44 | hostprogs-y += xdp_redirect |
| 45 | hostprogs-y += xdp_redirect_map |
| 46 | hostprogs-y += xdp_redirect_cpu |
| 47 | hostprogs-y += xdp_monitor |
| 48 | hostprogs-y += xdp_rxq_info |
| 49 | hostprogs-y += syscall_tp |
| 50 | hostprogs-y += cpustat |
| 51 | hostprogs-y += xdp_adjust_tail |
| 52 | hostprogs-y += xdpsock |
| 53 | hostprogs-y += xdp_fwd |
| 54 | hostprogs-y += task_fd_query |
| 55 | hostprogs-y += xdp_sample_pkts |
| 56 | |
| 57 | # Libbpf dependencies |
| 58 | LIBBPF = $(TOOLS_PATH)/lib/bpf/libbpf.a |
| 59 | |
| 60 | CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o |
| 61 | TRACE_HELPERS := ../../tools/testing/selftests/bpf/trace_helpers.o |
| 62 | |
| 63 | fds_example-objs := bpf_load.o fds_example.o |
| 64 | sockex1-objs := bpf_load.o sockex1_user.o |
| 65 | sockex2-objs := bpf_load.o sockex2_user.o |
| 66 | sockex3-objs := bpf_load.o sockex3_user.o |
| 67 | tracex1-objs := bpf_load.o tracex1_user.o |
| 68 | tracex2-objs := bpf_load.o tracex2_user.o |
| 69 | tracex3-objs := bpf_load.o tracex3_user.o |
| 70 | tracex4-objs := bpf_load.o tracex4_user.o |
| 71 | tracex5-objs := bpf_load.o tracex5_user.o |
| 72 | tracex6-objs := bpf_load.o tracex6_user.o |
| 73 | tracex7-objs := bpf_load.o tracex7_user.o |
| 74 | load_sock_ops-objs := bpf_load.o load_sock_ops.o |
| 75 | test_probe_write_user-objs := bpf_load.o test_probe_write_user_user.o |
| 76 | trace_output-objs := bpf_load.o trace_output_user.o $(TRACE_HELPERS) |
| 77 | lathist-objs := bpf_load.o lathist_user.o |
| 78 | offwaketime-objs := bpf_load.o offwaketime_user.o $(TRACE_HELPERS) |
| 79 | spintest-objs := bpf_load.o spintest_user.o $(TRACE_HELPERS) |
| 80 | map_perf_test-objs := bpf_load.o map_perf_test_user.o |
| 81 | test_overhead-objs := bpf_load.o test_overhead_user.o |
| 82 | test_cgrp2_array_pin-objs := test_cgrp2_array_pin.o |
| 83 | test_cgrp2_attach-objs := test_cgrp2_attach.o |
| 84 | test_cgrp2_attach2-objs := test_cgrp2_attach2.o $(CGROUP_HELPERS) |
| 85 | test_cgrp2_sock-objs := test_cgrp2_sock.o |
| 86 | test_cgrp2_sock2-objs := bpf_load.o test_cgrp2_sock2.o |
| 87 | xdp1-objs := xdp1_user.o |
| 88 | # reuse xdp1 source intentionally |
| 89 | xdp2-objs := xdp1_user.o |
| 90 | xdp_router_ipv4-objs := bpf_load.o xdp_router_ipv4_user.o |
| 91 | test_current_task_under_cgroup-objs := bpf_load.o $(CGROUP_HELPERS) \ |
| 92 | test_current_task_under_cgroup_user.o |
| 93 | trace_event-objs := bpf_load.o trace_event_user.o $(TRACE_HELPERS) |
| 94 | sampleip-objs := bpf_load.o sampleip_user.o $(TRACE_HELPERS) |
| 95 | tc_l2_redirect-objs := bpf_load.o tc_l2_redirect_user.o |
| 96 | lwt_len_hist-objs := bpf_load.o lwt_len_hist_user.o |
| 97 | xdp_tx_iptunnel-objs := bpf_load.o xdp_tx_iptunnel_user.o |
| 98 | test_map_in_map-objs := bpf_load.o test_map_in_map_user.o |
| 99 | per_socket_stats_example-objs := cookie_uid_helper_example.o |
| 100 | xdp_redirect-objs := bpf_load.o xdp_redirect_user.o |
| 101 | xdp_redirect_map-objs := bpf_load.o xdp_redirect_map_user.o |
| 102 | xdp_redirect_cpu-objs := bpf_load.o xdp_redirect_cpu_user.o |
| 103 | xdp_monitor-objs := bpf_load.o xdp_monitor_user.o |
| 104 | xdp_rxq_info-objs := xdp_rxq_info_user.o |
| 105 | syscall_tp-objs := bpf_load.o syscall_tp_user.o |
| 106 | cpustat-objs := bpf_load.o cpustat_user.o |
| 107 | xdp_adjust_tail-objs := xdp_adjust_tail_user.o |
| 108 | xdpsock-objs := bpf_load.o xdpsock_user.o |
| 109 | xdp_fwd-objs := bpf_load.o xdp_fwd_user.o |
| 110 | task_fd_query-objs := bpf_load.o task_fd_query_user.o $(TRACE_HELPERS) |
| 111 | xdp_sample_pkts-objs := xdp_sample_pkts_user.o $(TRACE_HELPERS) |
| 112 | |
| 113 | # Tell kbuild to always build the programs |
| 114 | always := $(hostprogs-y) |
| 115 | always += sockex1_kern.o |
| 116 | always += sockex2_kern.o |
| 117 | always += sockex3_kern.o |
| 118 | always += tracex1_kern.o |
| 119 | always += tracex2_kern.o |
| 120 | always += tracex3_kern.o |
| 121 | always += tracex4_kern.o |
| 122 | always += tracex5_kern.o |
| 123 | always += tracex6_kern.o |
| 124 | always += tracex7_kern.o |
| 125 | always += sock_flags_kern.o |
| 126 | always += test_probe_write_user_kern.o |
| 127 | always += trace_output_kern.o |
| 128 | always += tcbpf1_kern.o |
| 129 | always += tc_l2_redirect_kern.o |
| 130 | always += lathist_kern.o |
| 131 | always += offwaketime_kern.o |
| 132 | always += spintest_kern.o |
| 133 | always += map_perf_test_kern.o |
| 134 | always += test_overhead_tp_kern.o |
| 135 | always += test_overhead_raw_tp_kern.o |
| 136 | always += test_overhead_kprobe_kern.o |
| 137 | always += parse_varlen.o parse_simple.o parse_ldabs.o |
| 138 | always += test_cgrp2_tc_kern.o |
| 139 | always += xdp1_kern.o |
| 140 | always += xdp2_kern.o |
| 141 | always += xdp_router_ipv4_kern.o |
| 142 | always += test_current_task_under_cgroup_kern.o |
| 143 | always += trace_event_kern.o |
| 144 | always += sampleip_kern.o |
| 145 | always += lwt_len_hist_kern.o |
| 146 | always += xdp_tx_iptunnel_kern.o |
| 147 | always += test_map_in_map_kern.o |
| 148 | always += cookie_uid_helper_example.o |
| 149 | always += tcp_synrto_kern.o |
| 150 | always += tcp_rwnd_kern.o |
| 151 | always += tcp_bufs_kern.o |
| 152 | always += tcp_cong_kern.o |
| 153 | always += tcp_iw_kern.o |
| 154 | always += tcp_clamp_kern.o |
| 155 | always += tcp_basertt_kern.o |
| 156 | always += xdp_redirect_kern.o |
| 157 | always += xdp_redirect_map_kern.o |
| 158 | always += xdp_redirect_cpu_kern.o |
| 159 | always += xdp_monitor_kern.o |
| 160 | always += xdp_rxq_info_kern.o |
| 161 | always += xdp2skb_meta_kern.o |
| 162 | always += syscall_tp_kern.o |
| 163 | always += cpustat_kern.o |
| 164 | always += xdp_adjust_tail_kern.o |
| 165 | always += xdpsock_kern.o |
| 166 | always += xdp_fwd_kern.o |
| 167 | always += task_fd_query_kern.o |
| 168 | always += xdp_sample_pkts_kern.o |
| 169 | |
| 170 | HOSTCFLAGS += -I$(objtree)/usr/include |
| 171 | HOSTCFLAGS += -I$(srctree)/tools/lib/ |
| 172 | HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ |
| 173 | HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include |
| 174 | HOSTCFLAGS += -I$(srctree)/tools/perf |
| 175 | |
| 176 | HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable |
| 177 | HOSTCFLAGS_trace_helpers.o += -I$(srctree)/tools/lib/bpf/ |
| 178 | |
| 179 | HOSTCFLAGS_trace_output_user.o += -I$(srctree)/tools/lib/bpf/ |
| 180 | HOSTCFLAGS_offwaketime_user.o += -I$(srctree)/tools/lib/bpf/ |
| 181 | HOSTCFLAGS_spintest_user.o += -I$(srctree)/tools/lib/bpf/ |
| 182 | HOSTCFLAGS_trace_event_user.o += -I$(srctree)/tools/lib/bpf/ |
| 183 | HOSTCFLAGS_sampleip_user.o += -I$(srctree)/tools/lib/bpf/ |
| 184 | HOSTCFLAGS_task_fd_query_user.o += -I$(srctree)/tools/lib/bpf/ |
| 185 | HOSTCFLAGS_xdp_sample_pkts_user.o += -I$(srctree)/tools/lib/bpf/ |
| 186 | |
| 187 | HOST_LOADLIBES += $(LIBBPF) -lelf |
| 188 | HOSTLOADLIBES_tracex4 += -lrt |
| 189 | HOSTLOADLIBES_trace_output += -lrt |
| 190 | HOSTLOADLIBES_map_perf_test += -lrt |
| 191 | HOSTLOADLIBES_test_overhead += -lrt |
| 192 | HOSTLOADLIBES_xdpsock += -pthread |
| 193 | |
| 194 | # Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: |
| 195 | # make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang |
| 196 | LLC ?= llc |
| 197 | CLANG ?= clang |
| 198 | LLVM_OBJCOPY ?= llvm-objcopy |
| 199 | BTF_PAHOLE ?= pahole |
| 200 | |
| 201 | # Detect that we're cross compiling and use the cross compiler |
| 202 | ifdef CROSS_COMPILE |
| 203 | HOSTCC = $(CROSS_COMPILE)gcc |
| 204 | CLANG_ARCH_ARGS = -target $(ARCH) |
| 205 | endif |
| 206 | |
| 207 | BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) |
| 208 | BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) |
| 209 | BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') |
| 210 | |
| 211 | ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),) |
| 212 | EXTRA_CFLAGS += -g |
| 213 | LLC_FLAGS += -mattr=dwarfris |
| 214 | DWARF2BTF = y |
| 215 | endif |
| 216 | |
| 217 | # Trick to allow make to be run from this directory |
| 218 | all: |
| 219 | $(MAKE) -C ../../ $(CURDIR)/ BPF_SAMPLES_PATH=$(CURDIR) |
| 220 | |
| 221 | clean: |
| 222 | $(MAKE) -C ../../ M=$(CURDIR) clean |
| 223 | @rm -f *~ |
| 224 | |
| 225 | $(LIBBPF): FORCE |
| 226 | # Fix up variables inherited from Kbuild that tools/ build system won't like |
| 227 | $(MAKE) -C $(dir $@) RM='rm -rf' LDFLAGS= srctree=$(BPF_SAMPLES_PATH)/../../ O= |
| 228 | |
| 229 | $(obj)/syscall_nrs.s: $(src)/syscall_nrs.c |
| 230 | $(call if_changed_dep,cc_s_c) |
| 231 | |
| 232 | $(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE |
| 233 | $(call filechk,offsets,__SYSCALL_NRS_H__) |
| 234 | |
| 235 | clean-files += syscall_nrs.h |
| 236 | |
| 237 | FORCE: |
| 238 | |
| 239 | |
| 240 | # Verify LLVM compiler tools are available and bpf target is supported by llc |
| 241 | .PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) |
| 242 | |
| 243 | verify_cmds: $(CLANG) $(LLC) |
| 244 | @for TOOL in $^ ; do \ |
| 245 | if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ |
| 246 | echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ |
| 247 | exit 1; \ |
| 248 | else true; fi; \ |
| 249 | done |
| 250 | |
| 251 | verify_target_bpf: verify_cmds |
| 252 | @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ |
| 253 | echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ |
| 254 | echo " NOTICE: LLVM version >= 3.7.1 required" ;\ |
| 255 | exit 2; \ |
| 256 | else true; fi |
| 257 | |
| 258 | $(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF) |
| 259 | $(src)/*.c: verify_target_bpf $(LIBBPF) |
| 260 | |
| 261 | $(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h |
| 262 | |
| 263 | # asm/sysreg.h - inline assembly used by it is incompatible with llvm. |
| 264 | # But, there is no easy way to fix it, so just exclude it since it is |
| 265 | # useless for BPF samples. |
| 266 | $(obj)/%.o: $(src)/%.c |
| 267 | @echo " CLANG-bpf " $@ |
| 268 | $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \ |
| 269 | -I$(srctree)/tools/testing/selftests/bpf/ \ |
| 270 | -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \ |
| 271 | -D__TARGET_ARCH_$(ARCH) -Wno-compare-distinct-pointer-types \ |
| 272 | -Wno-gnu-variable-sized-type-not-at-end \ |
| 273 | -Wno-address-of-packed-member -Wno-tautological-compare \ |
| 274 | -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \ |
| 275 | -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf $(LLC_FLAGS) -filetype=obj -o $@ |
| 276 | ifeq ($(DWARF2BTF),y) |
| 277 | $(BTF_PAHOLE) -J $@ |
| 278 | endif |