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-rw-r--r--tools/testing/selftests/bpf/Makefile728
1 files changed, 728 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
new file mode 100644
index 0000000000..caede9b574
--- /dev/null
+++ b/tools/testing/selftests/bpf/Makefile
@@ -0,0 +1,728 @@
+# SPDX-License-Identifier: GPL-2.0
+include ../../../build/Build.include
+include ../../../scripts/Makefile.arch
+include ../../../scripts/Makefile.include
+
+CXX ?= $(CROSS_COMPILE)g++
+
+CURDIR := $(abspath .)
+TOOLSDIR := $(abspath ../../..)
+LIBDIR := $(TOOLSDIR)/lib
+BPFDIR := $(LIBDIR)/bpf
+TOOLSINCDIR := $(TOOLSDIR)/include
+BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
+APIDIR := $(TOOLSINCDIR)/uapi
+ifneq ($(O),)
+GENDIR := $(O)/include/generated
+else
+GENDIR := $(abspath ../../../../include/generated)
+endif
+GENHDR := $(GENDIR)/autoconf.h
+HOSTPKG_CONFIG := pkg-config
+
+ifneq ($(wildcard $(GENHDR)),)
+ GENFLAGS := -DHAVE_GENHDR
+endif
+
+BPF_GCC ?= $(shell command -v bpf-gcc;)
+SAN_CFLAGS ?=
+SAN_LDFLAGS ?= $(SAN_CFLAGS)
+CFLAGS += -g -O0 -rdynamic -Wall -Werror $(GENFLAGS) $(SAN_CFLAGS) \
+ -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \
+ -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT)
+LDFLAGS += $(SAN_LDFLAGS)
+LDLIBS += -lelf -lz -lrt -lpthread
+
+ifneq ($(LLVM),)
+# Silence some warnings when compiled with clang
+CFLAGS += -Wno-unused-command-line-argument
+endif
+
+# Check whether bpf cpu=v4 is supported or not by clang
+ifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),)
+CLANG_CPUV4 := 1
+endif
+
+# Order correspond to 'make run_tests' order
+TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
+ test_dev_cgroup \
+ test_sock test_sockmap get_cgroup_id_user \
+ test_cgroup_storage \
+ test_tcpnotify_user test_sysctl \
+ test_progs-no_alu32
+TEST_INST_SUBDIRS := no_alu32
+
+# Also test bpf-gcc, if present
+ifneq ($(BPF_GCC),)
+TEST_GEN_PROGS += test_progs-bpf_gcc
+TEST_INST_SUBDIRS += bpf_gcc
+endif
+
+ifneq ($(CLANG_CPUV4),)
+TEST_GEN_PROGS += test_progs-cpuv4
+TEST_INST_SUBDIRS += cpuv4
+endif
+
+TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_tc_edt.bpf.o
+TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)
+
+# Order correspond to 'make run_tests' order
+TEST_PROGS := test_kmod.sh \
+ test_xdp_redirect.sh \
+ test_xdp_redirect_multi.sh \
+ test_xdp_meta.sh \
+ test_xdp_veth.sh \
+ test_offload.py \
+ test_sock_addr.sh \
+ test_tunnel.sh \
+ test_lwt_seg6local.sh \
+ test_lirc_mode2.sh \
+ test_skb_cgroup_id.sh \
+ test_flow_dissector.sh \
+ test_xdp_vlan_mode_generic.sh \
+ test_xdp_vlan_mode_native.sh \
+ test_lwt_ip_encap.sh \
+ test_tcp_check_syncookie.sh \
+ test_tc_tunnel.sh \
+ test_tc_edt.sh \
+ test_xdping.sh \
+ test_bpftool_build.sh \
+ test_bpftool.sh \
+ test_bpftool_metadata.sh \
+ test_doc_build.sh \
+ test_xsk.sh \
+ test_xdp_features.sh
+
+TEST_PROGS_EXTENDED := with_addr.sh \
+ with_tunnels.sh ima_setup.sh verify_sig_setup.sh \
+ test_xdp_vlan.sh test_bpftool.py
+
+# Compile but not part of 'make run_tests'
+TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
+ flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
+ test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
+ xskxceiver xdp_redirect_multi xdp_synproxy veristat xdp_hw_metadata \
+ xdp_features
+
+TEST_GEN_FILES += liburandom_read.so urandom_read sign-file
+
+# Emit succinct information message describing current building step
+# $1 - generic step name (e.g., CC, LINK, etc);
+# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
+# $3 - target (assumed to be file); only file name will be emitted;
+# $4 - optional extra arg, emitted as-is, if provided.
+ifeq ($(V),1)
+Q =
+msg =
+else
+Q = @
+msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
+MAKEFLAGS += --no-print-directory
+submake_extras := feature_display=0
+endif
+
+# override lib.mk's default rules
+OVERRIDE_TARGETS := 1
+override define CLEAN
+ $(call msg,CLEAN)
+ $(Q)$(RM) -r $(TEST_GEN_PROGS)
+ $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED)
+ $(Q)$(RM) -r $(TEST_GEN_FILES)
+ $(Q)$(RM) -r $(EXTRA_CLEAN)
+ $(Q)$(MAKE) -C bpf_testmod clean
+ $(Q)$(MAKE) docs-clean
+endef
+
+include ../lib.mk
+
+SCRATCH_DIR := $(OUTPUT)/tools
+BUILD_DIR := $(SCRATCH_DIR)/build
+INCLUDE_DIR := $(SCRATCH_DIR)/include
+BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
+ifneq ($(CROSS_COMPILE),)
+HOST_BUILD_DIR := $(BUILD_DIR)/host
+HOST_SCRATCH_DIR := $(OUTPUT)/host-tools
+HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include
+else
+HOST_BUILD_DIR := $(BUILD_DIR)
+HOST_SCRATCH_DIR := $(SCRATCH_DIR)
+HOST_INCLUDE_DIR := $(INCLUDE_DIR)
+endif
+HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
+RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
+RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
+
+VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
+ $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
+ ../../../../vmlinux \
+ /sys/kernel/btf/vmlinux \
+ /boot/vmlinux-$(shell uname -r)
+VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
+ifeq ($(VMLINUX_BTF),)
+$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
+endif
+
+# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
+# to build individual tests.
+# NOTE: Semicolon at the end is critical to override lib.mk's default static
+# rule for binaries.
+$(notdir $(TEST_GEN_PROGS) \
+ $(TEST_GEN_PROGS_EXTENDED) \
+ $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
+
+# sort removes libbpf duplicates when not cross-building
+MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \
+ $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \
+ $(HOST_BUILD_DIR)/resolve_btfids \
+ $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR))
+$(MAKE_DIRS):
+ $(call msg,MKDIR,,$@)
+ $(Q)mkdir -p $@
+
+$(OUTPUT)/%.o: %.c
+ $(call msg,CC,,$@)
+ $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
+
+$(OUTPUT)/%:%.c
+ $(call msg,BINARY,,$@)
+ $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
+
+# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
+ifeq ($(SRCARCH),x86)
+LLD := lld
+else
+LLD := ld
+endif
+
+# Filter out -static for liburandom_read.so and its dependent targets so that static builds
+# do not fail. Static builds leave urandom_read relying on system-wide shared libraries.
+$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c
+ $(call msg,LIB,,$@)
+ $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \
+ $^ $(filter-out -static,$(LDLIBS)) \
+ -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
+ -fPIC -shared -o $@
+
+$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
+ $(call msg,BINARY,,$@)
+ $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
+ -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \
+ -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
+ -Wl,-rpath=. -o $@
+
+$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c
+ $(call msg,SIGN-FILE,,$@)
+ $(Q)$(CC) $(shell $(HOSTPKG_CONFIG) --cflags libcrypto 2> /dev/null) \
+ $< -o $@ \
+ $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
+
+$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch])
+ $(call msg,MOD,,$@)
+ $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation
+ $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_testmod
+ $(Q)cp bpf_testmod/bpf_testmod.ko $@
+
+DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
+ifneq ($(CROSS_COMPILE),)
+CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool
+TRUNNER_BPFTOOL := $(CROSS_BPFTOOL)
+USE_BOOTSTRAP := ""
+else
+TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL)
+USE_BOOTSTRAP := "bootstrap/"
+endif
+
+$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
+ $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \
+ OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \
+ BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
+ BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \
+ BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \
+ EXTRA_CFLAGS='-g -O0 $(SAN_CFLAGS)' \
+ EXTRA_LDFLAGS='$(SAN_LDFLAGS)' && \
+ cp $(RUNQSLOWER_OUTPUT)runqslower $@
+
+TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL)
+
+$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
+
+TESTING_HELPERS := $(OUTPUT)/testing_helpers.o
+CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o
+UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o
+TRACE_HELPERS := $(OUTPUT)/trace_helpers.o
+JSON_WRITER := $(OUTPUT)/json_writer.o
+CAP_HELPERS := $(OUTPUT)/cap_helpers.o
+
+$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS)
+$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
+$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS)
+$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS)
+$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS)
+$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS)
+$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
+$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS)
+$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS)
+$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS)
+$(OUTPUT)/test_tag: $(TESTING_HELPERS)
+$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS)
+$(OUTPUT)/xdping: $(TESTING_HELPERS)
+$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)
+$(OUTPUT)/test_maps: $(TESTING_HELPERS)
+$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS)
+$(OUTPUT)/xsk.o: $(BPFOBJ)
+
+BPFTOOL ?= $(DEFAULT_BPFTOOL)
+$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
+ $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
+ $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
+ ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \
+ EXTRA_CFLAGS='-g -O0' \
+ OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
+ LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
+ LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
+ prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
+
+ifneq ($(CROSS_COMPILE),)
+$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
+ $(BPFOBJ) | $(BUILD_DIR)/bpftool
+ $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
+ ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \
+ EXTRA_CFLAGS='-g -O0' \
+ OUTPUT=$(BUILD_DIR)/bpftool/ \
+ LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \
+ LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \
+ prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin
+endif
+
+all: docs
+
+docs:
+ $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \
+ -f Makefile.docs \
+ prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
+
+docs-clean:
+ $(Q)$(MAKE) $(submake_extras) \
+ -f Makefile.docs \
+ prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
+
+$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
+ $(APIDIR)/linux/bpf.h \
+ | $(BUILD_DIR)/libbpf
+ $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
+ EXTRA_CFLAGS='-g -O0 $(SAN_CFLAGS)' \
+ EXTRA_LDFLAGS='$(SAN_LDFLAGS)' \
+ DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
+
+ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
+$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
+ $(APIDIR)/linux/bpf.h \
+ | $(HOST_BUILD_DIR)/libbpf
+ $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
+ EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \
+ OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
+ CC="$(HOSTCC)" LD="$(HOSTLD)" \
+ DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
+endif
+
+$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
+ifeq ($(VMLINUX_H),)
+ $(call msg,GEN,,$@)
+ $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
+else
+ $(call msg,CP,,$@)
+ $(Q)cp "$(VMLINUX_H)" $@
+endif
+
+$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
+ $(TOOLSDIR)/bpf/resolve_btfids/main.c \
+ $(TOOLSDIR)/lib/rbtree.c \
+ $(TOOLSDIR)/lib/zalloc.c \
+ $(TOOLSDIR)/lib/string.c \
+ $(TOOLSDIR)/lib/ctype.c \
+ $(TOOLSDIR)/lib/str_error_r.c
+ $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
+ CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \
+ LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
+ OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
+
+# Get Clang's default includes on this system, as opposed to those seen by
+# '--target=bpf'. This fixes "missing" files on some architectures/distros,
+# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
+#
+# Use '-idirafter': Don't interfere with include mechanics except where the
+# build would have failed anyways.
+define get_sys_includes
+$(shell $(1) $(2) -v -E - </dev/null 2>&1 \
+ | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
+$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \
+$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}')
+endef
+
+# Determine target endianness.
+IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
+ grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
+MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
+
+ifneq ($(CROSS_COMPILE),)
+CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%))
+endif
+
+CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH))
+BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
+ -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
+ -I$(abspath $(OUTPUT)/../usr/include)
+
+CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
+ -Wno-compare-distinct-pointer-types
+
+$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
+$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
+
+$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
+$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h
+
+# Build BPF object using Clang
+# $1 - input .c file
+# $2 - output .o file
+# $3 - CFLAGS
+define CLANG_BPF_BUILD_RULE
+ $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
+ $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v3 -o $2
+endef
+# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
+define CLANG_NOALU32_BPF_BUILD_RULE
+ $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
+ $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v2 -o $2
+endef
+# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4
+define CLANG_CPUV4_BPF_BUILD_RULE
+ $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
+ $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v4 -o $2
+endef
+# Build BPF object using GCC
+define GCC_BPF_BUILD_RULE
+ $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
+ $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
+endef
+
+SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
+
+LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
+ linked_vars.skel.h linked_maps.skel.h \
+ test_subskeleton.skel.h test_subskeleton_lib.skel.h \
+ test_usdt.skel.h
+
+LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \
+ trace_printk.c trace_vprintk.c map_ptr_kern.c \
+ core_kern.c core_kern_overflow.c test_ringbuf.c \
+ test_ringbuf_map_key.c
+
+# Generate both light skeleton and libbpf skeleton for these
+LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \
+ kfunc_call_test_subprog.c
+SKEL_BLACKLIST += $$(LSKELS)
+
+test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o
+linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o
+linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o
+linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o
+# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file
+# but that's created as a side-effect of the skel.h generation.
+test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o
+test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o
+test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o
+xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o
+xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o
+xdp_features.skel.h-deps := xdp_features.bpf.o
+
+LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps)))
+
+# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
+# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
+# Parameters:
+# $1 - test runner base binary name (e.g., test_progs)
+# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, gcc-bpf, etc)
+define DEFINE_TEST_RUNNER
+
+TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
+TRUNNER_BINARY := $1$(if $2,-)$2
+TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
+ $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
+TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
+ $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
+TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
+TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
+TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
+TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS))
+TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
+ $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
+ $$(TRUNNER_BPF_SRCS)))
+TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
+TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
+TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
+
+# Evaluate rules now with extra TRUNNER_XXX variables above already defined
+$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
+
+endef
+
+# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
+# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
+# $1 - test runner base binary name (e.g., test_progs)
+# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, gcc-bpf, etc)
+define DEFINE_TEST_RUNNER_RULES
+
+ifeq ($($(TRUNNER_OUTPUT)-dir),)
+$(TRUNNER_OUTPUT)-dir := y
+$(TRUNNER_OUTPUT):
+ $$(call msg,MKDIR,,$$@)
+ $(Q)mkdir -p $$@
+endif
+
+# ensure we set up BPF objects generation rule just once for a given
+# input/output directory combination
+ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
+$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
+$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \
+ $(TRUNNER_BPF_PROGS_DIR)/%.c \
+ $(TRUNNER_BPF_PROGS_DIR)/*.h \
+ $$(INCLUDE_DIR)/vmlinux.h \
+ $(wildcard $(BPFDIR)/bpf_*.h) \
+ $(wildcard $(BPFDIR)/*.bpf.h) \
+ | $(TRUNNER_OUTPUT) $$(BPFOBJ)
+ $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
+ $(TRUNNER_BPF_CFLAGS))
+
+$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
+ $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
+ $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
+ $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
+ $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
+ $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
+ $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@
+ $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h)
+
+$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
+ $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
+ $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$<
+ $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o)
+ $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o)
+ $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
+ $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@
+
+$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT)
+ $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o))
+ $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps))
+ $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o)
+ $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o)
+ $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
+ $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
+ $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@
+ $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h)
+endif
+
+# ensure we set up tests.h header generation rule just once
+ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
+$(TRUNNER_TESTS_DIR)-tests-hdr := y
+$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
+ $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
+ $$(shell (echo '/* Generated header, do not edit */'; \
+ sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \
+ $(TRUNNER_TESTS_DIR)/*.c | sort ; \
+ ) > $$@)
+endif
+
+# compile individual test files
+# Note: we cd into output directory to ensure embedded BPF object is found
+$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
+ $(TRUNNER_TESTS_DIR)/%.c \
+ $(TRUNNER_EXTRA_HDRS) \
+ $(TRUNNER_BPF_OBJS) \
+ $(TRUNNER_BPF_SKELS) \
+ $(TRUNNER_BPF_LSKELS) \
+ $(TRUNNER_BPF_SKELS_LINKED) \
+ $$(BPFOBJ) | $(TRUNNER_OUTPUT)
+ $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
+ $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
+
+$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
+ %.c \
+ $(TRUNNER_EXTRA_HDRS) \
+ $(TRUNNER_TESTS_HDR) \
+ $$(BPFOBJ) | $(TRUNNER_OUTPUT)
+ $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
+ $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
+
+# non-flavored in-srctree builds receive special treatment, in particular, we
+# do not need to copy extra resources (see e.g. test_btf_dump_case())
+$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
+ifneq ($2:$(OUTPUT),:$(shell pwd))
+ $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
+ $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
+endif
+
+$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
+ $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
+ $(RESOLVE_BTFIDS) \
+ $(TRUNNER_BPFTOOL) \
+ | $(TRUNNER_BINARY)-extras
+ $$(call msg,BINARY,,$$@)
+ $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
+ $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@
+ $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \
+ $(OUTPUT)/$(if $2,$2/)bpftool
+
+endef
+
+# Define test_progs test runner.
+TRUNNER_TESTS_DIR := prog_tests
+TRUNNER_BPF_PROGS_DIR := progs
+TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \
+ network_helpers.c testing_helpers.c \
+ btf_helpers.c flow_dissector_load.h \
+ cap_helpers.c test_loader.c xsk.c disasm.c \
+ json_writer.c unpriv_helpers.c \
+ ip_check_defrag_frags.h
+TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \
+ $(OUTPUT)/liburandom_read.so \
+ $(OUTPUT)/xdp_synproxy \
+ $(OUTPUT)/sign-file \
+ $(OUTPUT)/uprobe_multi \
+ ima_setup.sh \
+ verify_sig_setup.sh \
+ $(wildcard progs/btf_dump_test_case_*.c) \
+ $(wildcard progs/*.bpf.o)
+TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
+TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
+$(eval $(call DEFINE_TEST_RUNNER,test_progs))
+
+# Define test_progs-no_alu32 test runner.
+TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
+TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
+$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
+
+# Define test_progs-cpuv4 test runner.
+ifneq ($(CLANG_CPUV4),)
+TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE
+TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
+$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4))
+endif
+
+# Define test_progs BPF-GCC-flavored test runner.
+ifneq ($(BPF_GCC),)
+TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
+TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,)
+$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
+endif
+
+# Define test_maps test runner.
+TRUNNER_TESTS_DIR := map_tests
+TRUNNER_BPF_PROGS_DIR := progs
+TRUNNER_EXTRA_SOURCES := test_maps.c
+TRUNNER_EXTRA_FILES :=
+TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
+TRUNNER_BPF_CFLAGS :=
+$(eval $(call DEFINE_TEST_RUNNER,test_maps))
+
+# Define test_verifier test runner.
+# It is much simpler than test_maps/test_progs and sufficiently different from
+# them (e.g., test.h is using completely pattern), that it's worth just
+# explicitly defining all the rules explicitly.
+verifier/tests.h: verifier/*.c
+ $(shell ( cd verifier/; \
+ echo '/* Generated header, do not edit */'; \
+ echo '#ifdef FILL_ARRAY'; \
+ ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
+ echo '#endif' \
+ ) > verifier/tests.h)
+$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
+ $(call msg,BINARY,,$@)
+ $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
+
+$(OUTPUT)/xskxceiver: xskxceiver.c xskxceiver.h $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT)
+ $(call msg,BINARY,,$@)
+ $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
+
+$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT)
+ $(call msg,BINARY,,$@)
+ $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
+
+$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT)
+ $(call msg,BINARY,,$@)
+ $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
+
+# Make sure we are able to include and link libbpf against c++.
+$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
+ $(call msg,CXX,,$@)
+ $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
+
+# Benchmark runner
+$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
+ $(call msg,CC,,$@)
+ $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
+$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
+$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
+$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
+ $(OUTPUT)/perfbuf_bench.skel.h
+$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
+$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h
+$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h
+$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h
+$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h
+$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h
+$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h
+$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h
+$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h
+$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
+$(OUTPUT)/bench: LDLIBS += -lm
+$(OUTPUT)/bench: $(OUTPUT)/bench.o \
+ $(TESTING_HELPERS) \
+ $(TRACE_HELPERS) \
+ $(CGROUP_HELPERS) \
+ $(OUTPUT)/bench_count.o \
+ $(OUTPUT)/bench_rename.o \
+ $(OUTPUT)/bench_trigger.o \
+ $(OUTPUT)/bench_ringbufs.o \
+ $(OUTPUT)/bench_bloom_filter_map.o \
+ $(OUTPUT)/bench_bpf_loop.o \
+ $(OUTPUT)/bench_strncmp.o \
+ $(OUTPUT)/bench_bpf_hashmap_full_update.o \
+ $(OUTPUT)/bench_local_storage.o \
+ $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \
+ $(OUTPUT)/bench_bpf_hashmap_lookup.o \
+ $(OUTPUT)/bench_local_storage_create.o \
+ $(OUTPUT)/bench_htab_mem.o \
+ #
+ $(call msg,BINARY,,$@)
+ $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
+
+$(OUTPUT)/veristat.o: $(BPFOBJ)
+$(OUTPUT)/veristat: $(OUTPUT)/veristat.o
+ $(call msg,BINARY,,$@)
+ $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
+
+$(OUTPUT)/uprobe_multi: uprobe_multi.c
+ $(call msg,BINARY,,$@)
+ $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
+
+EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
+ prog_tests/tests.h map_tests/tests.h verifier/tests.h \
+ feature bpftool \
+ $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h \
+ no_alu32 cpuv4 bpf_gcc bpf_testmod.ko \
+ liburandom_read.so)
+
+.PHONY: docs docs-clean
+
+# Delete partially updated (corrupted) files on error
+.DELETE_ON_ERROR:
+
+DEFAULT_INSTALL_RULE := $(INSTALL_RULE)
+override define INSTALL_RULE
+ $(DEFAULT_INSTALL_RULE)
+ @for DIR in $(TEST_INST_SUBDIRS); do \
+ mkdir -p $(INSTALL_PATH)/$$DIR; \
+ rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\
+ done
+endef