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
10 #include <linux/workqueue.h>
11 #include <linux/if_xdp.h>
12 #include <linux/mutex.h>
13 #include <linux/spinlock.h>
28 struct user_struct *user;
34 struct list_head xsk_dma_list;
35 struct work_struct work;
40 spinlock_t lock; /* Synchronize map updates */
41 struct xdp_sock __rcu *xsk_map[];
45 /* struct sock must be the first member of struct xdp_sock */
47 struct xsk_queue *rx ____cacheline_aligned_in_smp;
48 struct net_device *dev;
49 struct xdp_umem *umem;
50 struct list_head flush_node;
51 struct xsk_buff_pool *pool;
60 struct xsk_queue *tx ____cacheline_aligned_in_smp;
61 struct list_head tx_list;
62 /* Protects generic receive. */
69 struct list_head map_list;
70 /* Protects map_list */
71 spinlock_t map_list_lock;
72 /* Protects multiple processes in the control path */
74 struct xsk_queue *fq_tmp; /* Only as tmp storage before bind */
75 struct xsk_queue *cq_tmp; /* Only as tmp storage before bind */
78 #ifdef CONFIG_XDP_SOCKETS
80 int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp);
81 int __xsk_map_redirect(struct xdp_sock *xs, struct xdp_buff *xdp);
82 void __xsk_map_flush(void);
86 static inline int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp)
91 static inline int __xsk_map_redirect(struct xdp_sock *xs, struct xdp_buff *xdp)
96 static inline void __xsk_map_flush(void)
100 #endif /* CONFIG_XDP_SOCKETS */
102 #endif /* _LINUX_XDP_SOCK_H */