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 += per_socket_stats_example 42tprogs-y += xdp_redirect 43tprogs-y += xdp_redirect_map 44tprogs-y += xdp_redirect_cpu 45tprogs-y += xdp_monitor 46tprogs-y += xdp_rxq_info 47tprogs-y += syscall_tp 48tprogs-y += cpustat 49tprogs-y += xdp_adjust_tail 50tprogs-y += xdpsock 51tprogs-y += xdp_fwd 52tprogs-y += task_fd_query 53tprogs-y += xdp_sample_pkts 54tprogs-y += ibumad 55tprogs-y += hbm 56 57# Libbpf dependencies 58LIBBPF = $(TOOLS_PATH)/lib/bpf/libbpf.a 59 60CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o 61TRACE_HELPERS := ../../tools/testing/selftests/bpf/trace_helpers.o 62 63fds_example-objs := fds_example.o 64sockex1-objs := sockex1_user.o 65sockex2-objs := sockex2_user.o 66sockex3-objs := sockex3_user.o 67tracex1-objs := tracex1_user.o $(TRACE_HELPERS) 68tracex2-objs := tracex2_user.o 69tracex3-objs := tracex3_user.o 70tracex4-objs := tracex4_user.o 71tracex5-objs := tracex5_user.o $(TRACE_HELPERS) 72tracex6-objs := tracex6_user.o 73tracex7-objs := tracex7_user.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_sock-objs := test_cgrp2_sock.o 84test_cgrp2_sock2-objs := bpf_load.o test_cgrp2_sock2.o 85xdp1-objs := xdp1_user.o 86# reuse xdp1 source intentionally 87xdp2-objs := xdp1_user.o 88xdp_router_ipv4-objs := xdp_router_ipv4_user.o 89test_current_task_under_cgroup-objs := bpf_load.o $(CGROUP_HELPERS) \ 90 test_current_task_under_cgroup_user.o 91trace_event-objs := trace_event_user.o $(TRACE_HELPERS) 92sampleip-objs := sampleip_user.o $(TRACE_HELPERS) 93tc_l2_redirect-objs := bpf_load.o tc_l2_redirect_user.o 94lwt_len_hist-objs := bpf_load.o lwt_len_hist_user.o 95xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o 96test_map_in_map-objs := test_map_in_map_user.o 97per_socket_stats_example-objs := cookie_uid_helper_example.o 98xdp_redirect-objs := xdp_redirect_user.o 99xdp_redirect_map-objs := xdp_redirect_map_user.o 100xdp_redirect_cpu-objs := bpf_load.o xdp_redirect_cpu_user.o 101xdp_monitor-objs := bpf_load.o xdp_monitor_user.o 102xdp_rxq_info-objs := xdp_rxq_info_user.o 103syscall_tp-objs := bpf_load.o syscall_tp_user.o 104cpustat-objs := bpf_load.o cpustat_user.o 105xdp_adjust_tail-objs := xdp_adjust_tail_user.o 106xdpsock-objs := xdpsock_user.o 107xdp_fwd-objs := xdp_fwd_user.o 108task_fd_query-objs := bpf_load.o task_fd_query_user.o $(TRACE_HELPERS) 109xdp_sample_pkts-objs := xdp_sample_pkts_user.o $(TRACE_HELPERS) 110ibumad-objs := bpf_load.o ibumad_user.o $(TRACE_HELPERS) 111hbm-objs := bpf_load.o hbm.o $(CGROUP_HELPERS) 112 113# Tell kbuild to always build the programs 114always-y := $(tprogs-y) 115always-y += sockex1_kern.o 116always-y += sockex2_kern.o 117always-y += sockex3_kern.o 118always-y += tracex1_kern.o 119always-y += tracex2_kern.o 120always-y += tracex3_kern.o 121always-y += tracex4_kern.o 122always-y += tracex5_kern.o 123always-y += tracex6_kern.o 124always-y += tracex7_kern.o 125always-y += sock_flags_kern.o 126always-y += test_probe_write_user_kern.o 127always-y += trace_output_kern.o 128always-y += tcbpf1_kern.o 129always-y += tc_l2_redirect_kern.o 130always-y += lathist_kern.o 131always-y += offwaketime_kern.o 132always-y += spintest_kern.o 133always-y += map_perf_test_kern.o 134always-y += test_overhead_tp_kern.o 135always-y += test_overhead_raw_tp_kern.o 136always-y += test_overhead_kprobe_kern.o 137always-y += parse_varlen.o parse_simple.o parse_ldabs.o 138always-y += test_cgrp2_tc_kern.o 139always-y += xdp1_kern.o 140always-y += xdp2_kern.o 141always-y += xdp_router_ipv4_kern.o 142always-y += test_current_task_under_cgroup_kern.o 143always-y += trace_event_kern.o 144always-y += sampleip_kern.o 145always-y += lwt_len_hist_kern.o 146always-y += xdp_tx_iptunnel_kern.o 147always-y += test_map_in_map_kern.o 148always-y += tcp_synrto_kern.o 149always-y += tcp_rwnd_kern.o 150always-y += tcp_bufs_kern.o 151always-y += tcp_cong_kern.o 152always-y += tcp_iw_kern.o 153always-y += tcp_clamp_kern.o 154always-y += tcp_basertt_kern.o 155always-y += tcp_tos_reflect_kern.o 156always-y += tcp_dumpstats_kern.o 157always-y += xdp_redirect_kern.o 158always-y += xdp_redirect_map_kern.o 159always-y += xdp_redirect_cpu_kern.o 160always-y += xdp_monitor_kern.o 161always-y += xdp_rxq_info_kern.o 162always-y += xdp2skb_meta_kern.o 163always-y += syscall_tp_kern.o 164always-y += cpustat_kern.o 165always-y += xdp_adjust_tail_kern.o 166always-y += xdp_fwd_kern.o 167always-y += task_fd_query_kern.o 168always-y += xdp_sample_pkts_kern.o 169always-y += ibumad_kern.o 170always-y += hbm_out_kern.o 171always-y += hbm_edt_kern.o 172always-y += xdpsock_kern.o 173 174ifeq ($(ARCH), arm) 175# Strip all except -D__LINUX_ARM_ARCH__ option needed to handle linux 176# headers when arm instruction set identification is requested. 177ARM_ARCH_SELECTOR := $(filter -D__LINUX_ARM_ARCH__%, $(KBUILD_CFLAGS)) 178BPF_EXTRA_CFLAGS := $(ARM_ARCH_SELECTOR) 179TPROGS_CFLAGS += $(ARM_ARCH_SELECTOR) 180endif 181 182TPROGS_CFLAGS += -Wall -O2 183TPROGS_CFLAGS += -Wmissing-prototypes 184TPROGS_CFLAGS += -Wstrict-prototypes 185 186TPROGS_CFLAGS += -I$(objtree)/usr/include 187TPROGS_CFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ 188TPROGS_CFLAGS += -I$(srctree)/tools/lib/ 189TPROGS_CFLAGS += -I$(srctree)/tools/include 190TPROGS_CFLAGS += -I$(srctree)/tools/perf 191TPROGS_CFLAGS += -DHAVE_ATTR_TEST=0 192 193ifdef SYSROOT 194TPROGS_CFLAGS += --sysroot=$(SYSROOT) 195TPROGS_LDFLAGS := -L$(SYSROOT)/usr/lib 196endif 197 198TPROGCFLAGS_bpf_load.o += -Wno-unused-variable 199 200TPROGS_LDLIBS += $(LIBBPF) -lelf -lz 201TPROGLDLIBS_tracex4 += -lrt 202TPROGLDLIBS_trace_output += -lrt 203TPROGLDLIBS_map_perf_test += -lrt 204TPROGLDLIBS_test_overhead += -lrt 205TPROGLDLIBS_xdpsock += -pthread 206 207# Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: 208# make M=samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang 209LLC ?= llc 210CLANG ?= clang 211LLVM_OBJCOPY ?= llvm-objcopy 212BTF_PAHOLE ?= pahole 213 214# Detect that we're cross compiling and use the cross compiler 215ifdef CROSS_COMPILE 216CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_COMPILE:%-=%)) 217endif 218 219# Don't evaluate probes and warnings if we need to run make recursively 220ifneq ($(src),) 221HDR_PROBE := $(shell printf "\#include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \ 222 $(CC) $(TPROGS_CFLAGS) $(TPROGS_LDFLAGS) -x c - \ 223 -o /dev/null 2>/dev/null && echo okay) 224 225ifeq ($(HDR_PROBE),) 226$(warning WARNING: Detected possible issues with include path.) 227$(warning WARNING: Please install kernel headers locally (make headers_install).) 228endif 229 230BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) 231BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) 232BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') 233BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ 234 $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ 235 readelf -S ./llvm_btf_verify.o | grep BTF; \ 236 /bin/rm -f ./llvm_btf_verify.o) 237 238BPF_EXTRA_CFLAGS += -fno-stack-protector 239ifneq ($(BTF_LLVM_PROBE),) 240 BPF_EXTRA_CFLAGS += -g 241else 242ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),) 243 BPF_EXTRA_CFLAGS += -g 244 LLC_FLAGS += -mattr=dwarfris 245 DWARF2BTF = y 246endif 247endif 248endif 249 250# Trick to allow make to be run from this directory 251all: 252 $(MAKE) -C ../../ M=$(CURDIR) BPF_SAMPLES_PATH=$(CURDIR) 253 254clean: 255 $(MAKE) -C ../../ M=$(CURDIR) clean 256 @find $(CURDIR) -type f -name '*~' -delete 257 258$(LIBBPF): FORCE 259# Fix up variables inherited from Kbuild that tools/ build system won't like 260 $(MAKE) -C $(dir $@) RM='rm -rf' EXTRA_CFLAGS="$(TPROGS_CFLAGS)" \ 261 LDFLAGS=$(TPROGS_LDFLAGS) srctree=$(BPF_SAMPLES_PATH)/../../ O= 262 263$(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE 264 $(call filechk,offsets,__SYSCALL_NRS_H__) 265 266targets += syscall_nrs.s 267clean-files += syscall_nrs.h 268 269FORCE: 270 271 272# Verify LLVM compiler tools are available and bpf target is supported by llc 273.PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) 274 275verify_cmds: $(CLANG) $(LLC) 276 @for TOOL in $^ ; do \ 277 if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ 278 echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ 279 exit 1; \ 280 else true; fi; \ 281 done 282 283verify_target_bpf: verify_cmds 284 @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ 285 echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ 286 echo " NOTICE: LLVM version >= 3.7.1 required" ;\ 287 exit 2; \ 288 else true; fi 289 290$(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF) 291$(src)/*.c: verify_target_bpf $(LIBBPF) 292 293$(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h 294$(obj)/hbm_out_kern.o: $(src)/hbm.h $(src)/hbm_kern.h 295$(obj)/hbm.o: $(src)/hbm.h 296$(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm_kern.h 297 298-include $(BPF_SAMPLES_PATH)/Makefile.target 299 300# asm/sysreg.h - inline assembly used by it is incompatible with llvm. 301# But, there is no easy way to fix it, so just exclude it since it is 302# useless for BPF samples. 303$(obj)/%.o: $(src)/%.c 304 @echo " CLANG-bpf " $@ 305 $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(BPF_EXTRA_CFLAGS) \ 306 -I$(obj) -I$(srctree)/tools/testing/selftests/bpf/ \ 307 -I$(srctree)/tools/lib/ \ 308 -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \ 309 -D__TARGET_ARCH_$(SRCARCH) -Wno-compare-distinct-pointer-types \ 310 -Wno-gnu-variable-sized-type-not-at-end \ 311 -Wno-address-of-packed-member -Wno-tautological-compare \ 312 -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \ 313 -I$(srctree)/samples/bpf/ -include asm_goto_workaround.h \ 314 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf $(LLC_FLAGS) -filetype=obj -o $@ 315ifeq ($(DWARF2BTF),y) 316 $(BTF_PAHOLE) -J $@ 317endif 318