linux-imx

// SPDX-License-Identifier: GPL-2.0

/* Copyright (C) 2007-2019  B.A.T.M.A.N. contributors:

 *

 * Marek Lindner

 */

​

#include "icmp_socket.h"

#include "main.h"

​

#include <linux/atomic.h>

#include <linux/compiler.h>

#include <linux/debugfs.h>

#include <linux/errno.h>

#include <linux/etherdevice.h>

#include <linux/eventpoll.h>

#include <linux/export.h>

#include <linux/fcntl.h>

#include <linux/fs.h>

#include <linux/gfp.h>

#include <linux/if_ether.h>

#include <linux/kernel.h>

#include <linux/list.h>

#include <linux/module.h>

#include <linux/netdevice.h>

#include <linux/pkt_sched.h>

#include <linux/poll.h>

#include <linux/printk.h>

#include <linux/sched.h> /* for linux/wait.h */

#include <linux/skbuff.h>

#include <linux/slab.h>

#include <linux/spinlock.h>

#include <linux/stddef.h>

#include <linux/string.h>

#include <linux/uaccess.h>

#include <linux/wait.h>

#include <uapi/linux/batadv_packet.h>

​

#include "debugfs.h"

#include "hard-interface.h"

#include "log.h"

#include "originator.h"

#include "send.h"

​

static struct batadv_socket_client *batadv_socket_client_hash[256];

​

static void batadv_socket_add_packet(struct batadv_socket_client *socket_client,

                     struct batadv_icmp_header *icmph,

                     size_t icmp_len);

​

/**

 * batadv_socket_init() - Initialize soft interface independent socket data

 */

void batadv_socket_init(void)

{

    memset(batadv_socket_client_hash, 0, sizeof(batadv_socket_client_hash));

}

​

static int batadv_socket_open(struct inode *inode, struct file *file)

{

    unsigned int i;

    struct batadv_socket_client *socket_client;

​

    if (!try_module_get(THIS_MODULE))

        return -EBUSY;

​

    batadv_debugfs_deprecated(file, "");

​

    stream_open(inode, file);

​

    socket_client = kmalloc(sizeof(*socket_client), GFP_KERNEL);

    if (!socket_client) {

        module_put(THIS_MODULE);

        return -ENOMEM;

    }

​

    for (i = 0; i < ARRAY_SIZE(batadv_socket_client_hash); i++) {

        if (!batadv_socket_client_hash[i]) {

            batadv_socket_client_hash[i] = socket_client;

            break;

        }

    }

​

    if (i == ARRAY_SIZE(batadv_socket_client_hash)) {

        pr_err("Error - can't add another packet client: maximum number of clients reached\n");

        kfree(socket_client);

        module_put(THIS_MODULE);

        return -EXFULL;

    }

​

    INIT_LIST_HEAD(&socket_client->queue_list);

    socket_client->queue_len = 0;

    socket_client->index = i;