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authorJesper Dangaard Brouer <brouer@redhat.com>2018-02-08 12:48:27 +0100
committerDaniel Borkmann <daniel@iogearbox.net>2018-02-09 00:25:12 +0100
commitf09b2e382e9a7053e3ae6f2fb6535efd5760cf5d (patch)
tree91b16d7227e33007319adfed253b945425a1dbec
parent864db336c677c288d81524c30a656804785902f9 (diff)
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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: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
-rw-r--r--tools/testing/selftests/bpf/Makefile14
-rwxr-xr-xtools/testing/selftests/bpf/test_libbpf.sh49
2 files changed, 61 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 3f48da0866ba..5c43c187f27c 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -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
diff --git a/tools/testing/selftests/bpf/test_libbpf.sh b/tools/testing/selftests/bpf/test_libbpf.sh
new file mode 100755
index 000000000000..d97dc914cd49
--- /dev/null
+++ b/tools/testing/selftests/bpf/test_libbpf.sh
@@ -0,0 +1,49 @@
+#!/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