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bpf: offload: allow array map offload 

The special handling of different map types is left to the driver.
Allow offload of array maps by simply adding it to accepted types.
For nfp we have to make sure array elements are not deleted.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Jakub Kicinski 2018-01-17 19:13:27 -08:00 committed by Daniel Borkmann
parent 32852649ba
commit 7a0ef69395
2 changed files with 4 additions and 1 deletions
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2
drivers/net/ethernet/netronome/nfp/bpf/offload.c
View File

@ -176,6 +176,8 @@ nfp_bpf_map_get_next_key(struct bpf_offloaded_map *offmap,
static int
nfp_bpf_map_delete_elem(struct bpf_offloaded_map *offmap, void *key)
{
if (offmap->map.map_type == BPF_MAP_TYPE_ARRAY)
return -EINVAL;
return nfp_bpf_ctrl_del_entry(offmap, key);
}

3
kernel/bpf/offload.c
View File

@ -299,7 +299,8 @@ struct bpf_map *bpf_map_offload_map_alloc(union bpf_attr *attr)
if (!capable(CAP_SYS_ADMIN))
return ERR_PTR(-EPERM);
if (attr->map_type != BPF_MAP_TYPE_HASH)
if (attr->map_type != BPF_MAP_TYPE_ARRAY &&
attr->map_type != BPF_MAP_TYPE_HASH)
return ERR_PTR(-EINVAL);
offmap = kzalloc(sizeof(*offmap), GFP_USER);