Commit f09b2e38 authored by Jesper Dangaard Brouer's avatar Jesper Dangaard Brouer Committed by Daniel Borkmann
Browse files

selftests/bpf: add selftest that use test_libbpf_open 



This script test_libbpf.sh will be part of the 'make run_tests'
invocation, but can also be invoked manually in this directory,
and a verbose mode can be enabled via setting the environment
variable $VERBOSE like:

 $ VERBOSE=yes ./test_libbpf.sh

The script contains some tests that are commented out, as they
currently fail.  They are reminders about what we need to improve
for the libbpf loader library.

Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent 864db336

tools/testing/selftests/bpf/Makefile

+12 −2
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ endif 
CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include

LDLIBS += -lcap -lelf -lrt -lpthread



# 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_align test_verifier_log test_dev_cgroup test_tcpbpf_user
@@ -20,17 +21,26 @@ TEST_GEN_FILES = test_pkt_access.o test_xdp.o test_l4lb.o test_tcp_estats.o test 
	test_pkt_md_access.o test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o     \

	sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o test_tracepoint.o \

	test_l4lb_noinline.o test_xdp_noinline.o test_stacktrace_map.o \

	sample_map_ret0.o test_tcpbpf_kern.o test_libbpf_open

	sample_map_ret0.o test_tcpbpf_kern.o



TEST_PROGS := test_kmod.sh test_xdp_redirect.sh test_xdp_meta.sh \

# Order correspond to 'make run_tests' order

TEST_PROGS := test_kmod.sh \

	test_libbpf.sh \

	test_xdp_redirect.sh \

	test_xdp_meta.sh \

	test_offload.py



# Compile but not part of 'make run_tests'

TEST_GEN_PROGS_EXTENDED = test_libbpf_open



include ../lib.mk



BPFOBJ := $(OUTPUT)/libbpf.a cgroup_helpers.c



$(TEST_GEN_PROGS): $(BPFOBJ)



$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a



.PHONY: force



# force a rebuild of BPFOBJ when its dependencies are updated

tools/testing/selftests/bpf/test_libbpf.sh

0 → 100755
+49 −0
Original line number Diff line number Diff line 
#!/bin/sh

# SPDX-License-Identifier: GPL-2.0



export TESTNAME=test_libbpf



# Determine selftest success via shell exit code

exit_handler()

{

	if (( $? == 0 )); then

		echo "selftests: $TESTNAME [PASS]";

	else

		echo "$TESTNAME: failed at file $LAST_LOADED" 1>&2

		echo "selftests: $TESTNAME [FAILED]";

	fi

}



libbpf_open_file()

{

	LAST_LOADED=$1

	if [ -n "$VERBOSE" ]; then

	    ./test_libbpf_open $1

	else

	    ./test_libbpf_open --quiet $1

	fi

}



# Exit script immediately (well catched by trap handler) if any

# program/thing exits with a non-zero status.

set -e



# (Use 'trap -l' to list meaning of numbers)

trap exit_handler 0 2 3 6 9



libbpf_open_file test_l4lb.o



# TODO: fix libbpf to load noinline functions

# [warning] libbpf: incorrect bpf_call opcode

#libbpf_open_file test_l4lb_noinline.o



# TODO: fix test_xdp_meta.c to load with libbpf

# [warning] libbpf: test_xdp_meta.o doesn't provide kernel version

#libbpf_open_file test_xdp_meta.o



# TODO: fix libbpf to handle .eh_frame

# [warning] libbpf: relocation failed: no section(10)

#libbpf_open_file ../../../../samples/bpf/tracex3_kern.o



# Success

exit 0

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