Pinning map and libbpf

[Eric Leblond <eric@xxxxxxxxx>]

Hi,

I've just added an libbpf bpf_pin_obj call to a working setup and this
did cause bpf_map_lookup_elem() call to fail and return a value even if
the set is empty.

The maps structure is the following:

struct bpf_map_def SEC("maps") ipv4_drop = {
    .type = BPF_MAP_TYPE_HASH,
    .key_size = sizeof(__u32),
    .value_size = sizeof(__u32),
    .max_entries = 32768,
};

Is there something I should change ?

I'm using 4.18. 

BR,
-- 
Eric Leblond <eric@xxxxxxxxx>