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Stanislav Fomichev f6d66139f8 bpf: libbpf: retry map creation without the name

[ Upstream commit 23499442c3 ]

Since commit 88cda1c9da ("bpf: libbpf: Provide basic API support
to specify BPF obj name"), libbpf unconditionally sets bpf_attr->name
for maps. Pre v4.14 kernels don't know about map names and return an
error about unexpected non-zero data. Retry sys_bpf without a map
name to cover older kernels.

v2 changes:
* check for errno == EINVAL as suggested by Daniel Borkmann

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2019-02-12 19:47:00 +01:00

.gitignore

tools lib bpf: Change FEATURE-DUMP to FEATURE-DUMP.libbpf

2015-11-05 12:47:51 -03:00

bpf.c

bpf: libbpf: retry map creation without the name

2019-02-12 19:47:00 +01:00

bpf.h

bpf: Test BPF_PROG_TYPE_SK_REUSEPORT

2018-08-11 01:58:46 +02:00

btf.c

Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net