diff options
Diffstat (limited to 'net/xdp/xdp_umem.h')
| -rw-r--r-- | net/xdp/xdp_umem.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/net/xdp/xdp_umem.h b/net/xdp/xdp_umem.h new file mode 100644 index 000000000000..4597ae81a221 --- /dev/null +++ b/net/xdp/xdp_umem.h @@ -0,0 +1,45 @@ +/* SPDX-License-Identifier: GPL-2.0 + * XDP user-space packet buffer + * Copyright(c) 2018 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#ifndef XDP_UMEM_H_ +#define XDP_UMEM_H_ + +#include <linux/mm.h> +#include <linux/if_xdp.h> +#include <linux/workqueue.h> + +#include "xdp_umem_props.h" + +struct xdp_umem { + struct page **pgs; + struct xdp_umem_props props; + u32 npgs; + u32 frame_headroom; + u32 nfpp_mask; + u32 nfpplog2; + u32 frame_size_log2; + struct user_struct *user; + struct pid *pid; + unsigned long address; + size_t size; + atomic_t users; + struct work_struct work; +}; + +int xdp_umem_reg(struct xdp_umem *umem, struct xdp_umem_reg *mr); +void xdp_get_umem(struct xdp_umem *umem); +void xdp_put_umem(struct xdp_umem *umem); +int xdp_umem_create(struct xdp_umem **umem); + +#endif /* XDP_UMEM_H_ */ |