1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* AF_XDP internal functions
3 * Copyright(c) 2018 Intel Corporation.
6 #ifndef _LINUX_XDP_SOCK_H
7 #define _LINUX_XDP_SOCK_H
9 #include <linux/workqueue.h>
10 #include <linux/if_xdp.h>
11 #include <linux/mutex.h>
12 #include <linux/spinlock.h>
19 struct xdp_umem_props {
24 struct xdp_umem_page {
32 struct xdp_umem_page *pages;
33 struct xdp_umem_props props;
36 struct user_struct *user;
37 unsigned long address;
39 struct work_struct work;
42 struct net_device *dev;
45 spinlock_t xsk_list_lock;
46 struct list_head xsk_list;
50 /* struct sock must be the first member of struct xdp_sock */
53 struct net_device *dev;
54 struct xdp_umem *umem;
55 struct list_head flush_node;
57 struct xsk_queue *tx ____cacheline_aligned_in_smp;
58 struct list_head list;
60 /* Protects multiple processes in the control path */
62 /* Mutual exclusion of NAPI TX thread and sendmsg error paths
63 * in the SKB destructor callback.
65 spinlock_t tx_completion_lock;
70 #ifdef CONFIG_XDP_SOCKETS
71 int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp);
72 int xsk_rcv(struct xdp_sock *xs, struct xdp_buff *xdp);
73 void xsk_flush(struct xdp_sock *xs);
74 bool xsk_is_setup_for_bpf_map(struct xdp_sock *xs);
75 /* Used from netdev driver */
76 u64 *xsk_umem_peek_addr(struct xdp_umem *umem, u64 *addr);
77 void xsk_umem_discard_addr(struct xdp_umem *umem);
78 void xsk_umem_complete_tx(struct xdp_umem *umem, u32 nb_entries);
79 bool xsk_umem_consume_tx(struct xdp_umem *umem, dma_addr_t *dma, u32 *len);
80 void xsk_umem_consume_tx_done(struct xdp_umem *umem);
82 static inline int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp)
87 static inline int xsk_rcv(struct xdp_sock *xs, struct xdp_buff *xdp)
92 static inline void xsk_flush(struct xdp_sock *xs)
96 static inline bool xsk_is_setup_for_bpf_map(struct xdp_sock *xs)
100 #endif /* CONFIG_XDP_SOCKETS */
102 #endif /* _LINUX_XDP_SOCK_H */