[RFC PATCH net-next 05/13] bpf: offload: allow PERCPU_ARRAY maps for offloaded programs
Taehee Yoo <[email protected]>
| Newsgroups | org.kernel.vger.linux-hardening,dev.linux.lists.llvm,org.freedesktop.lists.amd-gfx,org.freedesktop.lists.dri-devel,org.kernel.vger.bpf,org.kernel.vger.linux-kernel,org.kernel.vger.linux-kselftest,org.kernel.vger.linux-media,org.kernel.vger.linux-rdma,org.kernel.vger.netdev |
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| Message-ID | <[email protected]> |
The knod BPF offload keeps hot per-CPU statistics in a PERCPU_ARRAY map that is mirrored into accelerator memory and aggregated back on the host. Permit this map type on the offload path. Signed-off-by: Taehee Yoo <[email protected]> (cherry picked from commit c447c9012940d48c1ec20a8ebac8d779e7d5a6fa) --- kernel/bpf/offload.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/bpf/offload.c b/kernel/bpf/offload.c index 0d6f5569588c..36e747a12cbe 100644 --- a/kernel/bpf/offload.c +++ b/kernel/bpf/offload.c @@ -510,7 +510,8 @@ 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_ARRAY && - attr->map_type != BPF_MAP_TYPE_HASH) + attr->map_type != BPF_MAP_TYPE_HASH && + attr->map_type != BPF_MAP_TYPE_PERCPU_ARRAY) return ERR_PTR(-EINVAL); offmap = bpf_map_area_alloc(sizeof(*offmap), NUMA_NO_NODE); -- 2.43.0