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 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 := bpf_load.o fds_example.o 62sockex1-objs := bpf_load.o sockex1_user.o 63sockex2-objs := bpf_load.o 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 72load_sock_ops-objs := bpf_load.o load_sock_ops.o 73test_probe_write_user-objs := bpf_load.o test_probe_write_user_user.o 74trace_output-objs := bpf_load.o trace_output_user.o $(TRACE_HELPERS) 75lathist-objs := bpf_load.o lathist_user.o 76offwaketime-objs := bpf_load.o offwaketime_user.o $(TRACE_HELPERS) 77spintest-objs := bpf_load.o spintest_user.o $(TRACE_HELPERS) 78map_perf_test-objs := bpf_load.o map_perf_test_user.o 79test_overhead-objs := bpf_load.o test_overhead_user.o 80test_cgrp2_array_pin-objs := test_cgrp2_array_pin.o 81test_cgrp2_attach-objs := test_cgrp2_attach.o 82test_cgrp2_attach2-objs := test_cgrp2_attach2.o $(CGROUP_HELPERS) 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 := bpf_load.o 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 := bpf_load.o trace_event_user.o $(TRACE_HELPERS) 92sampleip-objs := bpf_load.o 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 := bpf_load.o xdp_tx_iptunnel_user.o 96test_map_in_map-objs := bpf_load.o test_map_in_map_user.o 97per_socket_stats_example-objs := cookie_uid_helper_example.o 98xdp_redirect-objs := bpf_load.o xdp_redirect_user.o 99xdp_redirect_map-objs := bpf_load.o 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 := bpf_load.o xdpsock_user.o 107xdp_fwd-objs := bpf_load.o xdp_fwd_user.o 108 109# Tell kbuild to always build the programs 110always := $(hostprogs-y) 111always += sockex1_kern.o 112always += sockex2_kern.o 113always += sockex3_kern.o 114always += tracex1_kern.o 115always += tracex2_kern.o 116always += tracex3_kern.o 117always += tracex4_kern.o 118always += tracex5_kern.o 119always += tracex6_kern.o 120always += tracex7_kern.o 121always += sock_flags_kern.o 122always += test_probe_write_user_kern.o 123always += trace_output_kern.o 124always += tcbpf1_kern.o 125always += tc_l2_redirect_kern.o 126always += lathist_kern.o 127always += offwaketime_kern.o 128always += spintest_kern.o 129always += map_perf_test_kern.o 130always += test_overhead_tp_kern.o 131always += test_overhead_raw_tp_kern.o 132always += test_overhead_kprobe_kern.o 133always += parse_varlen.o parse_simple.o parse_ldabs.o 134always += test_cgrp2_tc_kern.o 135always += xdp1_kern.o 136always += xdp2_kern.o 137always += xdp_router_ipv4_kern.o 138always += test_current_task_under_cgroup_kern.o 139always += trace_event_kern.o 140always += sampleip_kern.o 141always += lwt_len_hist_kern.o 142always += xdp_tx_iptunnel_kern.o 143always += test_map_in_map_kern.o 144always += cookie_uid_helper_example.o 145always += tcp_synrto_kern.o 146always += tcp_rwnd_kern.o 147always += tcp_bufs_kern.o 148always += tcp_cong_kern.o 149always += tcp_iw_kern.o 150always += tcp_clamp_kern.o 151always += tcp_basertt_kern.o 152always += xdp_redirect_kern.o 153always += xdp_redirect_map_kern.o 154always += xdp_redirect_cpu_kern.o 155always += xdp_monitor_kern.o 156always += xdp_rxq_info_kern.o 157always += xdp2skb_meta_kern.o 158always += syscall_tp_kern.o 159always += cpustat_kern.o 160always += xdp_adjust_tail_kern.o 161always += xdpsock_kern.o 162always += xdp_fwd_kern.o 163 164HOSTCFLAGS += -I$(objtree)/usr/include 165HOSTCFLAGS += -I$(srctree)/tools/lib/ 166HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ 167HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include 168HOSTCFLAGS += -I$(srctree)/tools/perf 169 170HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable 171HOSTCFLAGS_trace_helpers.o += -I$(srctree)/tools/lib/bpf/ 172 173HOSTCFLAGS_trace_output_user.o += -I$(srctree)/tools/lib/bpf/ 174HOSTCFLAGS_offwaketime_user.o += -I$(srctree)/tools/lib/bpf/ 175HOSTCFLAGS_spintest_user.o += -I$(srctree)/tools/lib/bpf/ 176HOSTCFLAGS_trace_event_user.o += -I$(srctree)/tools/lib/bpf/ 177HOSTCFLAGS_sampleip_user.o += -I$(srctree)/tools/lib/bpf/ 178 179HOST_LOADLIBES += $(LIBBPF) -lelf 180HOSTLOADLIBES_tracex4 += -lrt 181HOSTLOADLIBES_trace_output += -lrt 182HOSTLOADLIBES_map_perf_test += -lrt 183HOSTLOADLIBES_test_overhead += -lrt 184HOSTLOADLIBES_xdpsock += -pthread 185 186# Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: 187# make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang 188LLC ?= llc 189CLANG ?= clang 190 191# Detect that we're cross compiling and use the cross compiler 192ifdef CROSS_COMPILE 193HOSTCC = $(CROSS_COMPILE)gcc 194CLANG_ARCH_ARGS = -target $(ARCH) 195endif 196 197# Trick to allow make to be run from this directory 198all: 199 $(MAKE) -C ../../ $(CURDIR)/ BPF_SAMPLES_PATH=$(CURDIR) 200 201clean: 202 $(MAKE) -C ../../ M=$(CURDIR) clean 203 @rm -f *~ 204 205$(LIBBPF): FORCE 206# Fix up variables inherited from Kbuild that tools/ build system won't like 207 $(MAKE) -C $(dir $@) RM='rm -rf' LDFLAGS= srctree=$(BPF_SAMPLES_PATH)/../../ O= 208 209$(obj)/syscall_nrs.s: $(src)/syscall_nrs.c 210 $(call if_changed_dep,cc_s_c) 211 212$(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE 213 $(call filechk,offsets,__SYSCALL_NRS_H__) 214 215clean-files += syscall_nrs.h 216 217FORCE: 218 219 220# Verify LLVM compiler tools are available and bpf target is supported by llc 221.PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) 222 223verify_cmds: $(CLANG) $(LLC) 224 @for TOOL in $^ ; do \ 225 if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ 226 echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ 227 exit 1; \ 228 else true; fi; \ 229 done 230 231verify_target_bpf: verify_cmds 232 @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ 233 echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ 234 echo " NOTICE: LLVM version >= 3.7.1 required" ;\ 235 exit 2; \ 236 else true; fi 237 238$(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF) 239$(src)/*.c: verify_target_bpf $(LIBBPF) 240 241$(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h 242 243# asm/sysreg.h - inline assembly used by it is incompatible with llvm. 244# But, there is no easy way to fix it, so just exclude it since it is 245# useless for BPF samples. 246$(obj)/%.o: $(src)/%.c 247 @echo " CLANG-bpf " $@ 248 $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \ 249 -I$(srctree)/tools/testing/selftests/bpf/ \ 250 -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \ 251 -D__TARGET_ARCH_$(ARCH) -Wno-compare-distinct-pointer-types \ 252 -Wno-gnu-variable-sized-type-not-at-end \ 253 -Wno-address-of-packed-member -Wno-tautological-compare \ 254 -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \ 255 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@ 256