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authorEric Leblond <eric@regit.org>2018-01-30 21:55:02 +0100
committerAlexei Starovoitov <ast@kernel.org>2018-02-02 17:53:48 -0800
commitbbf48c18ee0cd18b53712aa09aefa29b64b3976e (patch)
treeb8cb67b2922bdd88e43371158a0094fcf09129f3 /samples/bpf
parent949abbe88436c000cc63fce2bdfeb48b7d06a7df (diff)
libbpf: add error reporting in XDP
Parse netlink ext attribute to get the error message returned by the card. Code is partially take from libnl. We add netlink.h to the uapi include of tools. And we need to avoid include of userspace netlink header to have a successful build of sample so nlattr.h has a define to avoid the inclusion. Using a direct define could have been an issue as NLMSGERR_ATTR_MAX can change in the future. We also define SOL_NETLINK if not defined to avoid to have to copy socket.h for a fixed value. Signed-off-by: Eric Leblond <eric@regit.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'samples/bpf')
-rw-r--r--samples/bpf/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 64335bb94f9f..ec3fc8d88e87 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -45,7 +45,7 @@ hostprogs-y += xdp_rxq_info
hostprogs-y += syscall_tp
# Libbpf dependencies
-LIBBPF := ../../tools/lib/bpf/bpf.o
+LIBBPF := ../../tools/lib/bpf/bpf.o ../../tools/lib/bpf/nlattr.o
CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o
test_lru_dist-objs := test_lru_dist.o $(LIBBPF)