net: xdp: added bpf_netdev_command XDP_{QUERY, SETUP}_XSK_UMEM

Extend ndo_bpf with two new commands used for query zero-copy support
and register an UMEM to a queue_id of a netdev.

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 42c6ea35a6f24195f2fae0f68929701958b5f4da..cc4ea7ab6d243302320ad2032939509ccf74fd9e 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -817,10 +817,13 @@ enum bpf_netdev_command {
        BPF_OFFLOAD_DESTROY,
        BPF_OFFLOAD_MAP_ALLOC,
        BPF_OFFLOAD_MAP_FREE,
+       XDP_QUERY_XSK_UMEM,
+       XDP_SETUP_XSK_UMEM,
 };
 
 struct bpf_prog_offload_ops;
 struct netlink_ext_ack;
+struct xdp_umem;
 
 struct netdev_bpf {
        enum bpf_netdev_command command;
@@ -851,6 +854,11 @@ struct netdev_bpf {
                struct {
                        struct bpf_offloaded_map *offmap;
                };
+               /* XDP_SETUP_XSK_UMEM */
+               struct {
+                       struct xdp_umem *umem;
+                       u16 queue_id;
+               } xsk;
        };
 };