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d216d503a0
[ Upstream commitf96afa767b] libbpf is now able to load successfully test_l4lb_noinline.o and samples/bpf/tracex3_kern.o. For the test_l4lb_noinline, uncomment related tests from test_libbpf.c and remove the associated "TODO". For tracex3_kern.o, instead of loading a program from samples/bpf/ that might not have been compiled at this stage, try loading a program from BPF selftests. Since this test case is about loading a program compiled without the "-target bpf" flag, change the Makefile to compile one program accordingly (instead of passing the flag for compiling all programs). Regarding test_xdp_noinline.o: in its current shape the program fails to load because it provides no version section, but the loader needs one. The test was added to make sure that libbpf could load XDP programs even if they do not provide a version number in a dedicated section. But libbpf is already capable of doing that: in our case loading fails because the loader does not know that this is an XDP program (it does not need to, since it does not attach the program). So trying to load test_xdp_noinline.o does not bring much here: just delete this subtest. For the record, the error message obtained with tracex3_kern.o was fixed by commite3d91b0ca5("tools/libbpf: handle issues with bpf ELF objects containing .eh_frames") I have not been abled to reproduce the "libbpf: incorrect bpf_call opcode" error for test_l4lb_noinline.o, even with the version of libbpf present at the time when test_libbpf.sh and test_libbpf_open.c were created. RFC -> v1: - Compile test_xdp without the "-target bpf" flag, and try to load it instead of ../../samples/bpf/tracex3_kern.o. - Delete test_xdp_noinline.o subtest. Cc: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
146 lines
4.7 KiB
Makefile
146 lines
4.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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LIBDIR := ../../../lib
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BPFDIR := $(LIBDIR)/bpf
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APIDIR := ../../../include/uapi
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GENDIR := ../../../../include/generated
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GENHDR := $(GENDIR)/autoconf.h
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ifneq ($(wildcard $(GENHDR)),)
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GENFLAGS := -DHAVE_GENHDR
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endif
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CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include
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LDLIBS += -lcap -lelf -lrt -lpthread
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TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
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all: $(TEST_CUSTOM_PROGS)
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$(TEST_CUSTOM_PROGS): $(OUTPUT)/%: %.c
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$(CC) -o $(TEST_CUSTOM_PROGS) -static $< -Wl,--build-id
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# Order correspond to 'make run_tests' order
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TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
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test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \
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test_sock test_btf test_sockmap test_lirc_mode2_user get_cgroup_id_user \
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test_socket_cookie test_cgroup_storage test_select_reuseport
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TEST_GEN_FILES = test_pkt_access.o test_xdp.o test_l4lb.o test_tcp_estats.o test_obj_id.o \
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test_pkt_md_access.o test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o \
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sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o test_tracepoint.o \
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test_l4lb_noinline.o test_xdp_noinline.o test_stacktrace_map.o \
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sample_map_ret0.o test_tcpbpf_kern.o test_stacktrace_build_id.o \
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sockmap_tcp_msg_prog.o connect4_prog.o connect6_prog.o test_adjust_tail.o \
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test_btf_haskv.o test_btf_nokv.o test_sockmap_kern.o test_tunnel_kern.o \
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test_get_stack_rawtp.o test_sockmap_kern.o test_sockhash_kern.o \
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test_lwt_seg6local.o sendmsg4_prog.o sendmsg6_prog.o test_lirc_mode2_kern.o \
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get_cgroup_id_kern.o socket_cookie_prog.o test_select_reuseport_kern.o \
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test_skb_cgroup_id_kern.o
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# Order correspond to 'make run_tests' order
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TEST_PROGS := test_kmod.sh \
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test_libbpf.sh \
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test_xdp_redirect.sh \
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test_xdp_meta.sh \
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test_offload.py \
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test_sock_addr.sh \
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test_tunnel.sh \
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test_lwt_seg6local.sh \
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test_lirc_mode2.sh \
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test_skb_cgroup_id.sh
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# Compile but not part of 'make run_tests'
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TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user
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include ../lib.mk
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BPFOBJ := $(OUTPUT)/libbpf.a
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$(TEST_GEN_PROGS): $(BPFOBJ)
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$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a
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$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
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$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
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$(OUTPUT)/test_sock: cgroup_helpers.c
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$(OUTPUT)/test_sock_addr: cgroup_helpers.c
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$(OUTPUT)/test_socket_cookie: cgroup_helpers.c
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$(OUTPUT)/test_sockmap: cgroup_helpers.c
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$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
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$(OUTPUT)/test_progs: trace_helpers.c
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$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
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$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
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.PHONY: force
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# force a rebuild of BPFOBJ when its dependencies are updated
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force:
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$(BPFOBJ): force
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$(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
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CLANG ?= clang
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LLC ?= llc
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LLVM_OBJCOPY ?= llvm-objcopy
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BTF_PAHOLE ?= pahole
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PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
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# Let newer LLVM versions transparently probe the kernel for availability
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# of full BPF instruction set.
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ifeq ($(PROBE),)
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CPU ?= probe
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else
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CPU ?= generic
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endif
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# Get Clang's default includes on this system, as opposed to those seen by
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# '-target bpf'. This fixes "missing" files on some architectures/distros,
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# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
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#
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# Use '-idirafter': Don't interfere with include mechanics except where the
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# build would have failed anyways.
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CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \
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| sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
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CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
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$(CLANG_SYS_INCLUDES) \
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-Wno-compare-distinct-pointer-types
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$(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
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$(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
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BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
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BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
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BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
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ifneq ($(BTF_LLC_PROBE),)
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ifneq ($(BTF_PAHOLE_PROBE),)
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ifneq ($(BTF_OBJCOPY_PROBE),)
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CLANG_FLAGS += -g
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LLC_FLAGS += -mattr=dwarfris
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DWARF2BTF = y
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endif
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endif
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endif
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# Have one program compiled without "-target bpf" to test whether libbpf loads
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# it successfully
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$(OUTPUT)/test_xdp.o: test_xdp.c
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$(CLANG) $(CLANG_FLAGS) \
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-O2 -emit-llvm -c $< -o - | \
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$(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
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ifeq ($(DWARF2BTF),y)
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$(BTF_PAHOLE) -J $@
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endif
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$(OUTPUT)/%.o: %.c
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$(CLANG) $(CLANG_FLAGS) \
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-O2 -target bpf -emit-llvm -c $< -o - | \
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$(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
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ifeq ($(DWARF2BTF),y)
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$(BTF_PAHOLE) -J $@
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endif
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EXTRA_CLEAN := $(TEST_CUSTOM_PROGS)
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