diff options
Diffstat (limited to 'tools/testing/selftests/bpf/Makefile')
| -rw-r--r-- | tools/testing/selftests/bpf/Makefile | 791 |
1 files changed, 602 insertions, 189 deletions
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 542768f5195b..910d8d6402ef 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 -include ../../../../scripts/Kbuild.include +include ../../../build/Build.include include ../../../scripts/Makefile.arch +include ../../../scripts/Makefile.include CXX ?= $(CROSS_COMPILE)g++ @@ -9,93 +10,135 @@ TOOLSDIR := $(abspath ../../..) LIBDIR := $(TOOLSDIR)/lib BPFDIR := $(LIBDIR)/bpf TOOLSINCDIR := $(TOOLSDIR)/include +TOOLSARCHINCDIR := $(TOOLSDIR)/arch/$(SRCARCH)/include BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool APIDIR := $(TOOLSINCDIR)/uapi +ifneq ($(O),) +GENDIR := $(O)/include/generated +else GENDIR := $(abspath ../../../../include/generated) +endif GENHDR := $(GENDIR)/autoconf.h +PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config ifneq ($(wildcard $(GENHDR)),) GENFLAGS := -DHAVE_GENHDR endif -CLANG ?= clang -LLC ?= llc -LLVM_OBJCOPY ?= llvm-objcopy BPF_GCC ?= $(shell command -v bpf-gcc;) SAN_CFLAGS ?= -CFLAGS += -g -rdynamic -Wall -O2 $(GENFLAGS) $(SAN_CFLAGS) \ +SAN_LDFLAGS ?= $(SAN_CFLAGS) +RELEASE ?= +OPT_FLAGS ?= $(if $(RELEASE),-O2,-O0) + +LIBELF_CFLAGS := $(shell $(PKG_CONFIG) libelf --cflags 2>/dev/null) +LIBELF_LIBS := $(shell $(PKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf) + +SKIP_DOCS ?= +SKIP_LLVM ?= + +ifeq ($(srctree),) +srctree := $(patsubst %/,%,$(dir $(CURDIR))) +srctree := $(patsubst %/,%,$(dir $(srctree))) +srctree := $(patsubst %/,%,$(dir $(srctree))) +srctree := $(patsubst %/,%,$(dir $(srctree))) +endif + +CFLAGS += -g $(OPT_FLAGS) -rdynamic -std=gnu11 \ + -Wall -Werror -fno-omit-frame-pointer \ + $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_CFLAGS) \ -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \ - -I$(TOOLSINCDIR) -I$(APIDIR) \ - -Dbpf_prog_load=bpf_prog_test_load \ - -Dbpf_load_program=bpf_test_load_program -LDLIBS += -lcap -lelf -lz -lrt -lpthread + -I$(TOOLSINCDIR) -I$(TOOLSARCHINCDIR) -I$(APIDIR) -I$(OUTPUT) +LDFLAGS += $(SAN_LDFLAGS) +LDLIBS += $(LIBELF_LIBS) -lz -lrt -lpthread + +PCAP_CFLAGS := $(shell $(PKG_CONFIG) --cflags libpcap 2>/dev/null && echo "-DTRAFFIC_MONITOR=1") +PCAP_LIBS := $(shell $(PKG_CONFIG) --libs libpcap 2>/dev/null) +LDLIBS += $(PCAP_LIBS) +CFLAGS += $(PCAP_CFLAGS) + +# Some utility functions use LLVM libraries +jit_disasm_helpers.c-CFLAGS = $(LLVM_CFLAGS) + +ifneq ($(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 $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),) +CLANG_CPUV4 := 1 +endif # Order correspond to 'make run_tests' order -TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ - test_verifier_log test_dev_cgroup test_tcpbpf_user \ - test_sock test_sockmap get_cgroup_id_user test_socket_cookie \ - test_cgroup_storage \ - test_netcnt test_tcpnotify_user test_sysctl \ - test_progs-no_alu32 \ - test_current_pid_tgid_new_ns +TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_progs \ + test_sockmap \ + test_tcpnotify_user \ + test_progs-no_alu32 +TEST_INST_SUBDIRS := no_alu32 # Also test bpf-gcc, if present ifneq ($(BPF_GCC),) TEST_GEN_PROGS += test_progs-bpf_gcc +TEST_INST_SUBDIRS += bpf_gcc + +# The following tests contain C code that, although technically legal, +# triggers GCC warnings that cannot be disabled: declaration of +# anonymous struct types in function parameter lists. +progs/btf_dump_test_case_bitfields.c-bpf_gcc-CFLAGS := -Wno-error +progs/btf_dump_test_case_namespacing.c-bpf_gcc-CFLAGS := -Wno-error +progs/btf_dump_test_case_packing.c-bpf_gcc-CFLAGS := -Wno-error +progs/btf_dump_test_case_padding.c-bpf_gcc-CFLAGS := -Wno-error +progs/btf_dump_test_case_syntax.c-bpf_gcc-CFLAGS := -Wno-error + endif -TEST_GEN_FILES = -TEST_FILES = test_lwt_ip_encap.o \ - test_tc_edt.o +ifneq ($(CLANG_CPUV4),) +TEST_GEN_PROGS += test_progs-cpuv4 +TEST_INST_SUBDIRS += cpuv4 +endif + +TEST_GEN_FILES = 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_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 := \ + ima_setup.sh verify_sig_setup.sh \ + test_bpftool.py -TEST_PROGS_EXTENDED := with_addr.sh \ - with_tunnels.sh \ - tcp_client.py \ - tcp_server.py \ - test_xdp_vlan.sh +TEST_KMODS := bpf_testmod.ko bpf_test_no_cfi.ko bpf_test_modorder_x.ko \ + bpf_test_modorder_y.ko +TEST_KMOD_TARGETS = $(addprefix $(OUTPUT)/,$(TEST_KMODS)) # 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 - -TEST_CUSTOM_PROGS = urandom_read - -# 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), $(4))"; -MAKEFLAGS += --no-print-directory +TEST_GEN_PROGS_EXTENDED = \ + bench \ + flow_dissector_load \ + runqslower \ + test_cpp \ + test_lirc_mode2_user \ + veristat \ + xdp_features \ + xdp_hw_metadata \ + xdp_synproxy \ + xdping \ + xskxceiver + +TEST_GEN_FILES += liburandom_read.so urandom_read sign-file uprobe_multi + +ifneq ($(V),1) submake_extras := feature_display=0 endif @@ -103,26 +146,95 @@ endif OVERRIDE_TARGETS := 1 override define CLEAN $(call msg,CLEAN) - $(Q)$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN) + $(Q)$(RM) -r $(TEST_GEN_PROGS) + $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED) + $(Q)$(RM) -r $(TEST_GEN_FILES) + $(Q)$(RM) -r $(TEST_KMODS) + $(Q)$(RM) -r $(EXTRA_CLEAN) + $(Q)$(MAKE) -C test_kmods clean + $(Q)$(MAKE) docs-clean endef include ../lib.mk +NON_CHECK_FEAT_TARGETS := clean docs-clean +CHECK_FEAT := $(filter-out $(NON_CHECK_FEAT_TARGETS),$(or $(MAKECMDGOALS), "none")) +ifneq ($(CHECK_FEAT),) +FEATURE_USER := .selftests +FEATURE_TESTS := llvm +FEATURE_DISPLAY := $(FEATURE_TESTS) + +# Makefile.feature expects OUTPUT to end with a slash +ifeq ($(shell expr $(MAKE_VERSION) \>= 4.4), 1) +$(let OUTPUT,$(OUTPUT)/,\ + $(eval include ../../../build/Makefile.feature)) +else +override OUTPUT := $(OUTPUT)/ +$(eval include ../../../build/Makefile.feature) +override OUTPUT := $(patsubst %/,%,$(OUTPUT)) +endif +endif + +ifneq ($(SKIP_LLVM),1) +ifeq ($(feature-llvm),1) + LLVM_CFLAGS += -DHAVE_LLVM_SUPPORT + LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets + # both llvm-config and lib.mk add -D_GNU_SOURCE, which ends up as conflict + LLVM_CFLAGS += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags)) + # Prefer linking statically if it's available, otherwise fallback to shared + ifeq ($(shell $(LLVM_CONFIG) --link-static --libs >/dev/null 2>&1 && echo static),static) + LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-static --libs $(LLVM_CONFIG_LIB_COMPONENTS)) + LLVM_LDLIBS += $(filter-out -lxml2,$(shell $(LLVM_CONFIG) --link-static --system-libs $(LLVM_CONFIG_LIB_COMPONENTS))) + LLVM_LDLIBS += -lstdc++ + else + LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-shared --libs $(LLVM_CONFIG_LIB_COMPONENTS)) + endif + LLVM_LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags) +endif +endif + SCRATCH_DIR := $(OUTPUT)/tools BUILD_DIR := $(SCRATCH_DIR)/build INCLUDE_DIR := $(SCRATCH_DIR)/include BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a -RESOLVE_BTFIDS := $(BUILD_DIR)/resolve_btfids/resolve_btfids +ifneq ($(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 +# Define simple and short `make test_progs`, `make test_maps`, 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_PROGS) \ - $(TEST_PROGS_EXTENDED) \ - $(TEST_GEN_PROGS_EXTENDED) \ - $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ; +$(notdir $(TEST_GEN_PROGS) $(TEST_KMODS) \ + $(TEST_GEN_PROGS_EXTENDED)): %: $(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 $(call msg,CC,,$@) @@ -132,77 +244,173 @@ $(OUTPUT)/%:%.c $(call msg,BINARY,,$@) $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ -$(OUTPUT)/urandom_read: urandom_read.c - $(call msg,BINARY,,$@) - $(Q)$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS) -Wl,--build-id=sha1 - -$(OUTPUT)/test_stub.o: test_stub.c $(BPFOBJ) - $(call msg,CC,,$@) - $(Q)$(CC) -c $(CFLAGS) -o $@ $< +# LLVM's ld.lld doesn't support all the architectures, so use it only on x86 +ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv)) +LLD := lld +else +LLD := $(shell command -v $(LD)) +endif -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 $(VMLINUX_BTF_PATHS)))) +# Filter out -static for liburandom_read.so and its dependent targets so that static builds +# do not fail. Static builds leave urandom_read relying on system-wide shared libraries. +$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom_read.map + $(call msg,LIB,,$@) + $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ + $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \ + $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \ + -Wno-unused-command-line-argument \ + -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ + -Wl,--version-script=liburandom_read.map \ + -fPIC -shared -o $@ + +$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so + $(call msg,BINARY,,$@) + $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ + $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ + -Wno-unused-command-line-argument \ + -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 $(PKG_CONFIG) --cflags libcrypto 2> /dev/null) \ + $< -o $@ \ + $(shell $(PKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) + +# This should really be a grouped target, but make versions before 4.3 don't +# support that for regular rules. However, pattern matching rules are implicitly +# treated as grouped even with older versions of make, so as a workaround, the +# subst() turns the rule into a pattern matching rule +$(addprefix test_kmods/,$(subst .ko,%ko,$(TEST_KMODS))): $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard test_kmods/Makefile test_kmods/*.[ch]) + $(Q)$(RM) test_kmods/*.ko test_kmods/*.mod.o # force re-compilation + $(Q)$(MAKE) $(submake_extras) -C test_kmods \ + RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \ + EXTRA_CFLAGS='' EXTRA_LDFLAGS='' + +$(TEST_KMOD_TARGETS): $(addprefix test_kmods/,$(TEST_KMODS)) + $(call msg,MOD,,$@) + $(Q)cp test_kmods/$(@F) $@ + + +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 -DEFAULT_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool - -$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) - $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ - OUTPUT=$(SCRATCH_DIR)/ VMLINUX_BTF=$(VMLINUX_BTF) \ - BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) && \ - cp $(SCRATCH_DIR)/runqslower $@ - -$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ) - -$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c -$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c -$(OUTPUT)/test_sock: cgroup_helpers.c -$(OUTPUT)/test_sock_addr: cgroup_helpers.c -$(OUTPUT)/test_socket_cookie: cgroup_helpers.c -$(OUTPUT)/test_sockmap: cgroup_helpers.c -$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c -$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c -$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c -$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c -$(OUTPUT)/test_netcnt: cgroup_helpers.c -$(OUTPUT)/test_sock_fields: cgroup_helpers.c -$(OUTPUT)/test_sysctl: cgroup_helpers.c +$(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=$(INCLUDE_DIR) \ + BPF_TARGET_ENDIAN=$(BPF_TARGET_ENDIAN) \ + EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ + EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_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 +NETWORK_HELPERS := $(OUTPUT)/network_helpers.o + +$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) +$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) +$(OUTPUT)/test_sock_fields: $(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) \ - $(BPFOBJ) | $(BUILD_DIR)/bpftool + $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ - OUTPUT=$(BUILD_DIR)/bpftool/ \ - prefix= DESTDIR=$(SCRATCH_DIR)/ install - $(Q)mkdir -p $(BUILD_DIR)/bpftool/Documentation - $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \ - -C $(BPFTOOLDIR)/Documentation \ - OUTPUT=$(BUILD_DIR)/bpftool/Documentation/ \ - prefix= DESTDIR=$(SCRATCH_DIR)/ install + ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \ + EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ + EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ + 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 $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ + EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ + OUTPUT=$(BUILD_DIR)/bpftool/ \ + LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \ + LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \ + prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin +endif + +ifneq ($(SKIP_DOCS),1) +all: docs +endif + +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) \ - ../../../include/uapi/linux/bpf.h \ - | $(INCLUDE_DIR) $(BUILD_DIR)/libbpf + $(APIDIR)/linux/bpf.h \ + | $(BUILD_DIR)/libbpf $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ + EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ + EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \ DESTDIR=$(SCRATCH_DIR) prefix= all install_headers -$(BUILD_DIR)/libbpf $(BUILD_DIR)/bpftool $(BUILD_DIR)/resolve_btfids $(INCLUDE_DIR): - $(call msg,MKDIR,,$@) - $(Q)mkdir -p $@ +ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) +$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ + $(APIDIR)/linux/bpf.h \ + | $(HOST_BUILD_DIR)/libbpf + $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ + ARCH= CROSS_COMPILE= \ + EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ + EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ + 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) +# vmlinux.h is first dumped to a temprorary file and then compared to +# the previous version. This helps to avoid unnecessary re-builds of +# $(TRUNNER_BPF_OBJS) +$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) ifeq ($(VMLINUX_H),) $(call msg,GEN,,$@) - $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ + $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $(INCLUDE_DIR)/.vmlinux.h.tmp + $(Q)cmp -s $(INCLUDE_DIR)/.vmlinux.h.tmp $@ || mv $(INCLUDE_DIR)/.vmlinux.h.tmp $@ else $(call msg,CP,,$@) $(Q)cp "$(VMLINUX_H)" $@ endif -$(RESOLVE_BTFIDS): $(BPFOBJ) | $(BUILD_DIR)/resolve_btfids \ +$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ $(TOOLSDIR)/bpf/resolve_btfids/main.c \ $(TOOLSDIR)/lib/rbtree.c \ $(TOOLSDIR)/lib/zalloc.c \ @@ -210,75 +418,120 @@ $(RESOLVE_BTFIDS): $(BPFOBJ) | $(BUILD_DIR)/resolve_btfids \ $(TOOLSDIR)/lib/ctype.c \ $(TOOLSDIR)/lib/str_error_r.c $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ - OUTPUT=$(BUILD_DIR)/resolve_btfids/ BPFOBJ=$(BPFOBJ) + CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \ + LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ + OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) # Get Clang's default includes on this system, as opposed to those seen by -# '-target bpf'. This fixes "missing" files on some architectures/distros, +# '--target=bpf'. This fixes "missing" files on some architectures/distros, # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. # # Use '-idirafter': Don't interfere with include mechanics except where the # build would have failed anyways. define get_sys_includes -$(shell $(1) -v -E - </dev/null 2>&1 \ - | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') +$(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", $$3)}') \ +$(shell $(1) $(2) -dM -E - </dev/null | grep -E 'MIPS(EL|EB)|_MIPS_SZ(PTR|LONG) |_MIPS_SIM |_ABI(O32|N32|64) ' | awk '{printf("-D%s=%s ", $$2, $$3)}') endef # Determine target endianness. -IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ +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) +MENDIAN:=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) +BPF_TARGET_ENDIAN:=$(if $(IS_LITTLE_ENDIAN),--target=bpfel,--target=bpfeb) -CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) -BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ +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) + -I$(abspath $(OUTPUT)/../usr/include) \ + -std=gnu11 \ + -fno-strict-aliasing \ + -Wno-compare-distinct-pointer-types +# TODO: enable me -Wsign-compare -CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ - -Wno-compare-distinct-pointer-types +CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) $(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 -# $4 - LDFLAGS +# $4 - binary name define CLANG_BPF_BUILD_RULE - $(call msg,CLNG-LLC,$(TRUNNER_BINARY),$2) - $(Q)($(CLANG) $3 -O2 -target bpf -emit-llvm \ - -c $1 -o - || echo "BPF obj compilation failed") | \ - $(LLC) -mattr=dwarfris -march=bpf -mcpu=v3 $4 -filetype=obj -o $2 + $(call msg,CLNG-BPF,$4,$2) + $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -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-LLC,$(TRUNNER_BINARY),$2) - $(Q)($(CLANG) $3 -O2 -target bpf -emit-llvm \ - -c $1 -o - || echo "BPF obj compilation failed") | \ - $(LLC) -march=bpf -mcpu=v2 $4 -filetype=obj -o $2 + $(call msg,CLNG-BPF,$4,$2) + $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v2 -o $2 endef -# Similar to CLANG_BPF_BUILD_RULE, but using native Clang and bpf LLC -define CLANG_NATIVE_BPF_BUILD_RULE - $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) - $(Q)($(CLANG) $3 -O2 -emit-llvm \ - -c $1 -o - || echo "BPF obj compilation failed") | \ - $(LLC) -march=bpf -mcpu=v3 $4 -filetype=obj -o $2 +# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4 +define CLANG_CPUV4_BPF_BUILD_RULE + $(call msg,CLNG-BPF,$4,$2) + $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -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 $4 -O2 -c $1 -o $2 + $(call msg,GCC-BPF,$4,$2) + $(Q)$(BPF_GCC) $3 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes -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_n.c test_ringbuf_map_key.c test_ringbuf_write.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_OBJS := $(foreach skel,$(LINKED_SKELS),$($(skel)-deps)) +LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(LINKED_BPF_OBJS)) + +HEADERS_FOR_BPF_OBJS := $(wildcard $(BPFDIR)/*.bpf.h) \ + $(addprefix $(BPFDIR)/, bpf_core_read.h \ + bpf_endian.h \ + bpf_helpers.h \ + bpf_tracing.h) + # 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, gcc-bpf, etc) +# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc) define DEFINE_TEST_RUNNER TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 @@ -290,10 +543,12 @@ TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 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,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS)) +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), \ + $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\ $$(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 += $$(TRUNNER_BPF_OBJS) # Evaluate rules now with extra TRUNNER_XXX variables above already defined @@ -304,7 +559,7 @@ endef # Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and # set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: # $1 - test runner base binary name (e.g., test_progs) -# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc) +# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc) define DEFINE_TEST_RUNNER_RULES ifeq ($($(TRUNNER_OUTPUT)-dir),) @@ -318,20 +573,59 @@ endif # input/output directory combination ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) $(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y -$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \ +$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \ $(TRUNNER_BPF_PROGS_DIR)/%.c \ $(TRUNNER_BPF_PROGS_DIR)/*.h \ $$(INCLUDE_DIR)/vmlinux.h \ - $(wildcard $(BPFDIR)/bpf_*.h) | $(TRUNNER_OUTPUT) + $(HEADERS_FOR_BPF_OBJS) \ + | $(TRUNNER_OUTPUT) $$(BPFOBJ) $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ - $(TRUNNER_BPF_CFLAGS), \ - $(TRUNNER_BPF_LDFLAGS)) + $(TRUNNER_BPF_CFLAGS) \ + $$($$<-CFLAGS) \ + $$($$<-$2-CFLAGS),$(TRUNNER_BINARY)) -$(TRUNNER_BPF_SKELS): $(TRUNNER_OUTPUT)/%.skel.h: \ - $(TRUNNER_OUTPUT)/%.o \ - | $(BPFTOOL) $(TRUNNER_OUTPUT) +$(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=)) > $$(@:.skel.h=.subskel.h) + $(Q)rm -f $$(<:.o=.linked1.o) $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) + +$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) - $(Q)$$(BPFTOOL) gen skeleton $$< > $$@ + $(Q)$$(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)) > $$@ + $(Q)rm -f $$(<:.o=.llinked1.o) $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) + +$(LINKED_BPF_OBJS): %: $(TRUNNER_OUTPUT)/% + +# .SECONDEXPANSION here allows to correctly expand %-deps variables as prerequisites +.SECONDEXPANSION: +$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_OUTPUT)/%: $$$$(%-deps) $(BPFTOOL) | $(TRUNNER_OUTPUT) + $$(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) + $(Q)rm -f $$(@:.skel.h=.linked1.o) $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) + +# When the compiler generates a %.d file, only skel basenames (not +# full paths) are specified as prerequisites for corresponding %.o +# file. vpath directives below instruct make to search for skel files +# in TRUNNER_OUTPUT, if they are not present in the working directory. +vpath %.skel.h $(TRUNNER_OUTPUT) +vpath %.lskel.h $(TRUNNER_OUTPUT) +vpath %.subskel.h $(TRUNNER_OUTPUT) + endif # ensure we set up tests.h header generation rule just once @@ -339,10 +633,9 @@ ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) $(TRUNNER_TESTS_DIR)-tests-hdr := y $(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) - $$(shell ( cd $(TRUNNER_TESTS_DIR); \ - echo '/* Generated header, do not edit */'; \ - ls *.c 2> /dev/null | \ - sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \ + $$(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 ; \ ) > $$@) endif @@ -350,12 +643,25 @@ endif # Note: we cd into output directory to ensure embedded BPF object is found $(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ $(TRUNNER_TESTS_DIR)/%.c \ - $(TRUNNER_EXTRA_HDRS) \ - $(TRUNNER_BPF_OBJS) \ - $(TRUNNER_BPF_SKELS) \ - $$(BPFOBJ) | $(TRUNNER_OUTPUT) + | $(TRUNNER_OUTPUT)/%.test.d $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) - $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) + $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -MMD -MT $$@ -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) + +$(TRUNNER_TEST_OBJS:.o=.d): $(TRUNNER_OUTPUT)/%.test.d: \ + $(TRUNNER_TESTS_DIR)/%.c \ + $(TRUNNER_EXTRA_HDRS) \ + $(TRUNNER_BPF_SKELS) \ + $(TRUNNER_BPF_LSKELS) \ + $(TRUNNER_BPF_SKELS_LINKED) \ + $$(BPFOBJ) | $(TRUNNER_OUTPUT) + +ifeq ($(filter clean docs-clean,$(MAKECMDGOALS)),) +include $(wildcard $(TRUNNER_TEST_OBJS:.o=.d)) +endif + +# add per extra obj CFGLAGS definitions +$(foreach N,$(patsubst $(TRUNNER_OUTPUT)/%.o,%,$(TRUNNER_EXTRA_OBJS)), \ + $(eval $(TRUNNER_OUTPUT)/$(N).o: CFLAGS += $($(N).c-CFLAGS))) $(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ %.c \ @@ -365,46 +671,82 @@ $(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ -# only copy extra resources if in flavored build +# non-flavored in-srctree builds receive special treatment, in particular, we +# do not need to copy extra resources (see e.g. test_btf_dump_case()) $(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) -ifneq ($2,) +ifneq ($2:$(OUTPUT),:$(shell pwd)) $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) - $(Q)cp -a $$^ $(TRUNNER_OUTPUT)/ + $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/ endif +# some X.test.o files have runtime dependencies on Y.bpf.o files +$(OUTPUT)/$(TRUNNER_BINARY): | $(TRUNNER_BPF_OBJS) + $(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ $(RESOLVE_BTFIDS) \ + $(TRUNNER_BPFTOOL) \ + $(OUTPUT)/veristat \ | $(TRUNNER_BINARY)-extras $$(call msg,BINARY,,$$@) - $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@ - $(Q)$(RESOLVE_BTFIDS) --no-fail --btf btf_data.o $$@ + $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) $$(LLVM_LDLIBS) $$(LDFLAGS) $$(LLVM_LDFLAGS) -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 \ - flow_dissector_load.h +TRUNNER_EXTRA_SOURCES := test_progs.c \ + cgroup_helpers.c \ + trace_helpers.c \ + network_helpers.c \ + testing_helpers.c \ + btf_helpers.c \ + cap_helpers.c \ + unpriv_helpers.c \ + netlink_helpers.c \ + jit_disasm_helpers.c \ + io_helpers.c \ + test_loader.c \ + xsk.c \ + disasm.c \ + disasm_helpers.c \ + json_writer.c \ + flow_dissector_load.h \ + ip_check_defrag_frags.h TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \ - $(wildcard progs/btf_dump_test_case_*.c) + $(OUTPUT)/liburandom_read.so \ + $(OUTPUT)/xdp_synproxy \ + $(OUTPUT)/sign-file \ + $(OUTPUT)/uprobe_multi \ + $(TEST_KMOD_TARGETS) \ + 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) -TRUNNER_BPF_LDFLAGS := -mattr=+alu32 +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_LDFLAGS := +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) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS +$(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) -TRUNNER_BPF_LDFLAGS := +TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,) $(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) endif @@ -415,7 +757,6 @@ TRUNNER_EXTRA_SOURCES := test_maps.c TRUNNER_EXTRA_FILES := TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) TRUNNER_BPF_CFLAGS := -TRUNNER_BPF_LDFLAGS := $(eval $(call DEFINE_TEST_RUNNER,test_maps)) # Define test_verifier test runner. @@ -433,30 +774,102 @@ $(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) $(call msg,BINARY,,$@) $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ +# Include find_bit.c to compile xskxceiver. +EXTRA_SRC := $(TOOLSDIR)/lib/find_bit.c +$(OUTPUT)/xskxceiver: $(EXTRA_SRC) xskxceiver.c xskxceiver.h $(OUTPUT)/network_helpers.o $(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++. +CXXFLAGS += $(CFLAGS) +CXXFLAGS := $(subst -D_GNU_SOURCE=,,$(CXXFLAGS)) +CXXFLAGS := $(subst -std=gnu11,-std=gnu++11,$(CXXFLAGS)) $(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) $(call msg,CXX,,$@) - $(Q)$(CXX) $(CFLAGS) $^ $(LDLIBS) -o $@ + $(Q)$(CXX) $(CXXFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@ # Benchmark runner -$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h +$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ) $(call msg,CC,,$@) - $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ + $(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.o: bench.h testing_helpers.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_bpf_crypto.o: $(OUTPUT)/crypto_bench.skel.h +$(OUTPUT)/bench_sockmap.o: $(OUTPUT)/bench_sockmap_prog.skel.h +$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ) $(OUTPUT)/bench: LDLIBS += -lm -$(OUTPUT)/bench: $(OUTPUT)/bench.o $(OUTPUT)/testing_helpers.o \ +$(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_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 \ + $(OUTPUT)/bench_bpf_crypto.o \ + $(OUTPUT)/bench_sockmap.o \ + # $(call msg,BINARY,,$@) - $(Q)$(CC) $(LDFLAGS) -o $@ $(filter %.a %.o,$^) $(LDLIBS) + $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ -EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) \ +$(OUTPUT)/veristat.o: $(BPFOBJ) +$(OUTPUT)/veristat: $(OUTPUT)/veristat.o + $(call msg,BINARY,,$@) + $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ + +# Linking uprobe_multi can fail due to relocation overflows on mips. +$(OUTPUT)/uprobe_multi: CFLAGS += $(if $(filter mips, $(ARCH)),-mxgot) +$(OUTPUT)/uprobe_multi: uprobe_multi.c uprobe_multi.ld + $(call msg,BINARY,,$@) + $(Q)$(CC) $(CFLAGS) -Wl,-T,uprobe_multi.ld -O0 $(LDFLAGS) \ + $(filter-out %.ld,$^) $(LDLIBS) -o $@ + +EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ prog_tests/tests.h map_tests/tests.h verifier/tests.h \ - feature \ - $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32 bpf_gcc) + feature bpftool $(TEST_KMOD_TARGETS) \ + $(addprefix $(OUTPUT)/,*.o *.d *.skel.h *.lskel.h *.subskel.h \ + no_alu32 cpuv4 bpf_gcc \ + liburandom_read.so) \ + $(OUTPUT)/FEATURE-DUMP.selftests + +.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 |