linux-imx

/*

 *  scsi_netlink.c  - SCSI Transport Netlink Interface

 *

 *  Copyright (C) 2006   James Smart, Emulex Corporation

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that 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.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 */

#include <linux/time.h>

#include <linux/jiffies.h>

#include <linux/security.h>

#include <linux/delay.h>

#include <linux/slab.h>

#include <linux/export.h>

#include <net/sock.h>

#include <net/netlink.h>

​

#include <scsi/scsi_netlink.h>

#include "scsi_priv.h"

​

struct sock *scsi_nl_sock = NULL;

EXPORT_SYMBOL_GPL(scsi_nl_sock);

​

/**

 * scsi_nl_rcv_msg - Receive message handler.

 * @skb:        socket receive buffer

 *

 * Description: Extracts message from a receive buffer.

 *    Validates message header and calls appropriate transport message handler

 *

 *

 **/

static void

scsi_nl_rcv_msg(struct sk_buff *skb)

{

    struct nlmsghdr *nlh;

    struct scsi_nl_hdr *hdr;

    u32 rlen;

    int err, tport;

​

    while (skb->len >= NLMSG_HDRLEN) {

        err = 0;

​

        nlh = nlmsg_hdr(skb);

        if ((nlh->nlmsg_len < (sizeof(*nlh) + sizeof(*hdr))) ||

            (skb->len < nlh->nlmsg_len)) {

            printk(KERN_WARNING "%s: discarding partial skb\n",

                 __func__);

            return;

        }

​