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 7tprogs-y := test_lru_dist 8tprogs-y += sock_example 9tprogs-y += fds_example 10tprogs-y += sockex1 11tprogs-y += sockex2 12tprogs-y += sockex3 13tprogs-y += tracex1 14tprogs-y += tracex2 15tprogs-y += tracex3 16tprogs-y += tracex4 17tprogs-y += tracex5 18tprogs-y += tracex6 19tprogs-y += tracex7 20tprogs-y += test_probe_write_user 21tprogs-y += trace_output 22tprogs-y += lathist 23tprogs-y += offwaketime 24tprogs-y += spintest 25tprogs-y += map_perf_test 26tprogs-y += test_overhead 27tprogs-y += test_cgrp2_array_pin 28tprogs-y += test_cgrp2_attach 29tprogs-y += test_cgrp2_sock 30tprogs-y += test_cgrp2_sock2 31tprogs-y += xdp1 32tprogs-y += xdp2 33tprogs-y += xdp_router_ipv4 34tprogs-y += test_current_task_under_cgroup 35tprogs-y += trace_event 36tprogs-y += sampleip 37tprogs-y += tc_l2_redirect 38tprogs-y += lwt_len_hist 39tprogs-y += xdp_tx_iptunnel 40tprogs-y += test_map_in_map 41tprogs-y += xdp_redirect_map 42tprogs-y += xdp_redirect_cpu 43tprogs-y += xdp_monitor 44tprogs-y += xdp_rxq_info 45tprogs-y += syscall_tp 46tprogs-y += cpustat 47tprogs-y += xdp_adjust_tail 48tprogs-y += xdpsock 49tprogs-y += xdp_fwd 50tprogs-y += task_fd_query 51tprogs-y += xdp_sample_pkts 52tprogs-y += ibumad 53tprogs-y += hbm 54 55# Libbpf dependencies 56LIBBPF = $(TOOLS_PATH)/lib/bpf/libbpf.a 57 58CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o 59TRACE_HELPERS := ../../tools/testing/selftests/bpf/trace_helpers.o 60 61fds_example-objs := fds_example.o 62sockex1-objs := sockex1_user.o 63sockex2-objs := sockex2_user.o 64sockex3-objs := bpf_load.o sockex3_user.o 65tracex1-objs := bpf_load.o tracex1_user.o 66tracex2-objs := bpf_load.o tracex2_user.o 67tracex3-objs := bpf_load.o tracex3_user.o 68tracex4-objs := bpf_load.o tracex4_user.o 69tracex5-objs := bpf_load.o tracex5_user.o 70tracex6-objs := bpf_load.o tracex6_user.o 71tracex7-objs := bpf_load.o tracex7_user.o 72test_probe_write_user-objs := bpf_load.o test_probe_write_user_user.o 73trace_output-objs := bpf_load.o trace_output_user.o $(TRACE_HELPERS) 74lathist-objs := bpf_load.o lathist_user.o 75offwaketime-objs := bpf_load.o offwaketime_user.o $(TRACE_HELPERS) 76spintest-objs := bpf_load.o spintest_user.o $(TRACE_HELPERS) 77map_perf_test-objs := bpf_load.o map_perf_test_user.o 78test_overhead-objs := bpf_load.o test_overhead_user.o 79test_cgrp2_array_pin-objs := test_cgrp2_array_pin.o 80test_cgrp2_attach-objs := test_cgrp2_attach.o 81test_cgrp2_sock-objs := test_cgrp2_sock.o 82test_cgrp2_sock2-objs := bpf_load.o test_cgrp2_sock2.o 83xdp1-objs := xdp1_user.o 84# reuse xdp1 source intentionally 85xdp2-objs := xdp1_user.o 86xdp_router_ipv4-objs := xdp_router_ipv4_user.o 87test_current_task_under_cgroup-objs := bpf_load.o $(CGROUP_HELPERS) \ 88 test_current_task_under_cgroup_user.o 89trace_event-objs := bpf_load.o trace_event_user.o $(TRACE_HELPERS) 90sampleip-objs := bpf_load.o sampleip_user.o $(TRACE_HELPERS) 91tc_l2_redirect-objs := bpf_load.o tc_l2_redirect_user.o 92lwt_len_hist-objs := bpf_load.o lwt_len_hist_user.o 93xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o 94test_map_in_map-objs := bpf_load.o test_map_in_map_user.o 95per_socket_stats_example-objs := cookie_uid_helper_example.o 96xdp_redirect-objs := xdp_redirect_user.o 97xdp_redirect_map-objs := xdp_redirect_map_user.o 98xdp_redirect_cpu-objs := bpf_load.o xdp_redirect_cpu_user.o 99xdp_monitor-objs := bpf_load.o xdp_monitor_user.o 100xdp_rxq_info-objs := xdp_rxq_info_user.o 101syscall_tp-objs := bpf_load.o syscall_tp_user.o 102cpustat-objs := bpf_load.o cpustat_user.o 103xdp_adjust_tail-objs := xdp_adjust_tail_user.o 104xdpsock-objs := xdpsock_user.o 105xdp_fwd-objs := xdp_fwd_user.o 106task_fd_query-objs := bpf_load.o task_fd_query_user.o $(TRACE_HELPERS) 107xdp_sample_pkts-objs := xdp_sample_pkts_user.o $(TRACE_HELPERS) 108ibumad-objs := bpf_load.o ibumad_user.o $(TRACE_HELPERS) 109hbm-objs := bpf_load.o hbm.o $(CGROUP_HELPERS) 110 111# Tell kbuild to always build the programs 112always := $(tprogs-y) 113always += sockex1_kern.o 114always += sockex2_kern.o 115always += sockex3_kern.o 116always += tracex1_kern.o 117always += tracex2_kern.o 118always += tracex3_kern.o 119always += tracex4_kern.o 120always += tracex5_kern.o 121always += tracex6_kern.o 122always += tracex7_kern.o 123always += sock_flags_kern.o 124always += test_probe_write_user_kern.o 125always += trace_output_kern.o 126always += tcbpf1_kern.o 127always += tc_l2_redirect_kern.o 128always += lathist_kern.o 129always += offwaketime_kern.o 130always += spintest_kern.o 131always += map_perf_test_kern.o 132always += test_overhead_tp_kern.o 133always += test_overhead_raw_tp_kern.o 134always += test_overhead_kprobe_kern.o 135always += parse_varlen.o parse_simple.o parse_ldabs.o 136always += test_cgrp2_tc_kern.o 137always += xdp1_kern.o 138always += xdp2_kern.o 139always += xdp_router_ipv4_kern.o 140always += test_current_task_under_cgroup_kern.o 141always += trace_event_kern.o 142always += sampleip_kern.o 143always += lwt_len_hist_kern.o 144always += xdp_tx_iptunnel_kern.o 145always += test_map_in_map_kern.o 146always += tcp_synrto_kern.o 147always += tcp_rwnd_kern.o 148always += tcp_bufs_kern.o 149always += tcp_cong_kern.o 150always += tcp_iw_kern.o 151always += tcp_clamp_kern.o 152always += tcp_basertt_kern.o 153always += tcp_tos_reflect_kern.o 154always += tcp_dumpstats_kern.o 155always += xdp_redirect_kern.o 156always += xdp_redirect_map_kern.o 157always += xdp_redirect_cpu_kern.o 158always += xdp_monitor_kern.o 159always += xdp_rxq_info_kern.o 160always += xdp2skb_meta_kern.o 161always += syscall_tp_kern.o 162always += cpustat_kern.o 163always += xdp_adjust_tail_kern.o 164always += xdp_fwd_kern.o 165always += task_fd_query_kern.o 166always += xdp_sample_pkts_kern.o 167always += ibumad_kern.o 168always += hbm_out_kern.o 169always += hbm_edt_kern.o 170always += xdpsock_kern.o 171 172ifeq ($(ARCH), arm) 173# Strip all except -D__LINUX_ARM_ARCH__ option needed to handle linux 174# headers when arm instruction set identification is requested. 175ARM_ARCH_SELECTOR := $(filter -D__LINUX_ARM_ARCH__%, $(KBUILD_CFLAGS)) 176BPF_EXTRA_CFLAGS := $(ARM_ARCH_SELECTOR) 177TPROGS_CFLAGS += $(ARM_ARCH_SELECTOR) 178endif 179 180TPROGS_CFLAGS += -Wall -O2 181TPROGS_CFLAGS += -Wmissing-prototypes 182TPROGS_CFLAGS += -Wstrict-prototypes 183 184TPROGS_CFLAGS += -I$(objtree)/usr/include 185TPROGS_CFLAGS += -I$(srctree)/tools/lib/bpf/ 186TPROGS_CFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ 187TPROGS_CFLAGS += -I$(srctree)/tools/lib/ 188TPROGS_CFLAGS += -I$(srctree)/tools/include 189TPROGS_CFLAGS += -I$(srctree)/tools/perf 190TPROGS_CFLAGS += -DHAVE_ATTR_TEST=0 191 192ifdef SYSROOT 193TPROGS_CFLAGS += --sysroot=$(SYSROOT) 194TPROGS_LDFLAGS := -L$(SYSROOT)/usr/lib 195endif 196 197TPROGCFLAGS_bpf_load.o += -Wno-unused-variable 198 199TPROGS_LDLIBS += $(LIBBPF) -lelf 200TPROGLDLIBS_tracex4 += -lrt 201TPROGLDLIBS_trace_output += -lrt 202TPROGLDLIBS_map_perf_test += -lrt 203TPROGLDLIBS_test_overhead += -lrt 204TPROGLDLIBS_xdpsock += -pthread 205 206# Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: 207# make M=samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang 208LLC ?= llc 209CLANG ?= clang 210LLVM_OBJCOPY ?= llvm-objcopy 211BTF_PAHOLE ?= pahole 212 213# Detect that we're cross compiling and use the cross compiler 214ifdef CROSS_COMPILE 215CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_COMPILE:%-=%)) 216endif 217 218# Don't evaluate probes and warnings if we need to run make recursively 219ifneq ($(src),) 220HDR_PROBE := $(shell printf "\#include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \ 221 $(CC) $(TPROGS_CFLAGS) $(TPROGS_LDFLAGS) -x c - \ 222 -o /dev/null 2>/dev/null && echo okay) 223 224ifeq ($(HDR_PROBE),) 225$(warning WARNING: Detected possible issues with include path.) 226$(warning WARNING: Please install kernel headers locally (make headers_install).) 227endif 228 229BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) 230BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) 231BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') 232BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ 233 $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ 234 readelf -S ./llvm_btf_verify.o | grep BTF; \ 235 /bin/rm -f ./llvm_btf_verify.o) 236 237ifneq ($(BTF_LLVM_PROBE),) 238 BPF_EXTRA_CFLAGS += -g 239else 240ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),) 241 BPF_EXTRA_CFLAGS += -g 242 LLC_FLAGS += -mattr=dwarfris 243 DWARF2BTF = y 244endif 245endif 246endif 247 248# Trick to allow make to be run from this directory 249all: 250 $(MAKE) -C ../../ M=$(CURDIR) BPF_SAMPLES_PATH=$(CURDIR) 251 252clean: 253 $(MAKE) -C ../../ M=$(CURDIR) clean 254 @rm -f *~ 255 256$(LIBBPF): FORCE 257# Fix up variables inherited from Kbuild that tools/ build system won't like 258 $(MAKE) -C $(dir $@) RM='rm -rf' EXTRA_CFLAGS="$(TPROGS_CFLAGS)" \ 259 LDFLAGS=$(TPROGS_LDFLAGS) srctree=$(BPF_SAMPLES_PATH)/../../ O= 260 261$(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE 262 $(call filechk,offsets,__SYSCALL_NRS_H__) 263 264targets += syscall_nrs.s 265clean-files += syscall_nrs.h 266 267FORCE: 268 269 270# Verify LLVM compiler tools are available and bpf target is supported by llc 271.PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) 272 273verify_cmds: $(CLANG) $(LLC) 274 @for TOOL in $^ ; do \ 275 if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ 276 echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ 277 exit 1; \ 278 else true; fi; \ 279 done 280 281verify_target_bpf: verify_cmds 282 @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ 283 echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ 284 echo " NOTICE: LLVM version >= 3.7.1 required" ;\ 285 exit 2; \ 286 else true; fi 287 288$(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF) 289$(src)/*.c: verify_target_bpf $(LIBBPF) 290 291$(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h 292$(obj)/hbm_out_kern.o: $(src)/hbm.h $(src)/hbm_kern.h 293$(obj)/hbm.o: $(src)/hbm.h 294$(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm_kern.h 295 296-include $(BPF_SAMPLES_PATH)/Makefile.target 297 298# asm/sysreg.h - inline assembly used by it is incompatible with llvm. 299# But, there is no easy way to fix it, so just exclude it since it is 300# useless for BPF samples. 301$(obj)/%.o: $(src)/%.c 302 @echo " CLANG-bpf " $@ 303 $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(BPF_EXTRA_CFLAGS) \ 304 -I$(obj) -I$(srctree)/tools/testing/selftests/bpf/ \ 305 -I$(srctree)/tools/lib/bpf/ \ 306 -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \ 307 -D__TARGET_ARCH_$(SRCARCH) -Wno-compare-distinct-pointer-types \ 308 -Wno-gnu-variable-sized-type-not-at-end \ 309 -Wno-address-of-packed-member -Wno-tautological-compare \ 310 -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \ 311 -I$(srctree)/samples/bpf/ -include asm_goto_workaround.h \ 312 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf $(LLC_FLAGS) -filetype=obj -o $@ 313ifeq ($(DWARF2BTF),y) 314 $(BTF_PAHOLE) -J $@ 315endif 316