On Mon, Jul 26, 2021 at 04:00:32PM -0700, Stanislav Fomichev wrote: > Current max cgroup storage value size is 4k (PAGE_SIZE). The other local > storages accept up to 64k (BPF_LOCAL_STORAGE_MAX_VALUE_SIZE). Let's align > max cgroup value size with the other storages. > > For percpu, the max is 32k (PCPU_MIN_UNIT_SIZE) because percpu > allocator is not happy about larger values. > > netcnt test is extended to exercise those maximum values > (non-percpu max size is close to, but not real max). > > v3: > * refine SIZEOF_BPF_LOCAL_STORAGE_ELEM comment (Yonghong Song) > * anonymous struct in percpu_net_cnt & net_cnt (Yonghong Song) > * reorder free (Yonghong Song) > > v2: > * cap max_value_size instead of BUILD_BUG_ON (Martin KaFai Lau) Acked-by: Martin KaFai Lau <kafai@xxxxxx>
