diff options
Diffstat (limited to 'include/net/xdp_sock.h')
| -rw-r--r-- | include/net/xdp_sock.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/include/net/xdp_sock.h b/include/net/xdp_sock.h new file mode 100644 index 000000000000..185f4928fbda --- /dev/null +++ b/include/net/xdp_sock.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: GPL-2.0 + * AF_XDP internal functions + * 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 _LINUX_XDP_SOCK_H +#define _LINUX_XDP_SOCK_H + +#include <linux/mutex.h> +#include <net/sock.h> + +struct net_device; +struct xsk_queue; +struct xdp_umem; + +struct xdp_sock { + /* struct sock must be the first member of struct xdp_sock */ + struct sock sk; + struct xsk_queue *rx; + struct net_device *dev; + struct xdp_umem *umem; + struct list_head flush_node; + u16 queue_id; + struct xsk_queue *tx ____cacheline_aligned_in_smp; + /* Protects multiple processes in the control path */ + struct mutex mutex; + u64 rx_dropped; +}; + +struct xdp_buff; +#ifdef CONFIG_XDP_SOCKETS +int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp); +int xsk_rcv(struct xdp_sock *xs, struct xdp_buff *xdp); +void xsk_flush(struct xdp_sock *xs); +bool xsk_is_setup_for_bpf_map(struct xdp_sock *xs); +#else +static inline int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp) +{ + return -ENOTSUPP; +} + +static inline int xsk_rcv(struct xdp_sock *xs, struct xdp_buff *xdp) +{ + return -ENOTSUPP; +} + +static inline void xsk_flush(struct xdp_sock *xs) +{ +} + +static inline bool xsk_is_setup_for_bpf_map(struct xdp_sock *xs) +{ + return false; +} +#endif /* CONFIG_XDP_SOCKETS */ + +#endif /* _LINUX_XDP_SOCK_H */ |