linux-imx

/* SPDX-License-Identifier: GPL-2.0 */

/* AF_XDP internal functions

 * Copyright(c) 2018 Intel Corporation.

 */

​

#ifndef _LINUX_XDP_SOCK_H

#define _LINUX_XDP_SOCK_H

​

#include <linux/workqueue.h>

#include <linux/if_xdp.h>

#include <linux/mutex.h>

#include <linux/spinlock.h>

#include <linux/mm.h>

#include <net/sock.h>

​

struct net_device;

struct xsk_queue;

​

struct xdp_umem_page {

    void *addr;

    dma_addr_t dma;

};

​

struct xdp_umem_fq_reuse {

    u32 nentries;

    u32 length;

    u64 handles[];

};

​

struct xdp_umem {

    struct xsk_queue *fq;

    struct xsk_queue *cq;

    struct xdp_umem_page *pages;

    u64 chunk_mask;

    u64 size;

    u32 headroom;

    u32 chunk_size_nohr;

    struct user_struct *user;

    unsigned long address;

    refcount_t users;

    struct work_struct work;

    struct page **pgs;

    u32 npgs;

    int id;

    struct net_device *dev;

    struct xdp_umem_fq_reuse *fq_reuse;

    u16 queue_id;

    bool zc;

    spinlock_t xsk_list_lock;

    struct list_head xsk_list;

};

​

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;

    struct list_head list;

    bool zc;