/*
   <:copyright-BRCM:2015:DUAL/GPL:standard
   
      Copyright (c) 2015 Broadcom 
      All Rights Reserved
   
   Unless you and Broadcom execute a separate written software license
   agreement governing use of this software, this software is licensed
   to you under the terms of the GNU General Public License version 2
   (the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php,
   with the following added to such license:
   
      As a special exception, the copyright holders of this software give
      you permission to link this software with independent modules, and
      to copy and distribute the resulting executable under terms of your
      choice, provided that you also meet, for each linked independent
      module, the terms and conditions of the license of that module.
      An independent module is a module which is not derived from this
      software.  The special exception does not apply to any modifications
      of the software.
   
   Not withstanding the above, under no circumstances may you combine
   this software in any way with any other Broadcom software provided
   under a license other than the GPL, without Broadcom's express prior
   written consent.
   
   :>
 */

/*
 *  Created on: Jan/2016
 *      Author: ido@broadcom.com
 */

#include "port.h"
#include "enet.h"
#include "mux_index.h"
#include <bcm_OS_Deps.h>
#include <rdpa_api.h>
#include <rdpa_types.h>

        
static int add_wifi_port(struct net_device *dev)
{
    port_info_t port_info = { };
    rdpa_if rdpaif;
    enetx_port_t *p;
    int ssid;

    if (!strcmp(dev->name, "wl0"))
        rdpaif = rdpa_if_ssid0;
    else if (sscanf(dev->name, "wl0.%d", &ssid) == 1)
        rdpaif = rdpa_if_ssid0 + ssid;
    else if (!strcmp(dev->name, "wl1"))
        rdpaif = rdpa_if_ssid0 + WL_NUM_OF_SSID_PER_UNIT;
    else if (sscanf(dev->name, "wl1.%d", &ssid) == 1)
        rdpaif = rdpa_if_ssid0 + WL_NUM_OF_SSID_PER_UNIT + ssid;
    else
    {
        /* This is not a wifi interface, no need to demux it */
        return -1;
    }

    if (rdpaif > rdpa_if_ssid15)
    {
        enet_err("failed to parse correct rdpaif for %s %d\n", dev->name, rdpaif);
        return -1;
    }

    port_info.port = rdpaif;
    if (port_create(&port_info, root_sw, &p))
        return -1;
    
    p->dev = dev;
    /* note: wifi dev is not enetx_netdev so there is no priv holding port pointer */
    
    enet_dbg("added wifi port %s\n", p->obj_name);
    
    if (port_init(p))
    {
        sw_free(&p);
        return -1;
    }

    return 0;
}

static int wifi_notifier_call(struct notifier_block *nb, unsigned long event, void *_dev)
{
    struct net_device *dev = NETDEV_NOTIFIER_GET_DEV(_dev);

    switch (event)    
    {
    case NETDEV_REGISTER:
        add_wifi_port(dev);
        break;
    case NETDEV_UNREGISTER:
        /* TODO: remove port */
        break;
    }

    return 0;
}

static struct notifier_block nb =
{
    .notifier_call = wifi_notifier_call,
    .priority = 0,
};

int register_wifi_dev_forwarder(void)
{
    if (register_netdevice_notifier(&nb))
    {
        enet_err("register_netdevice_notifier() failed\n");
        return -1;
    }

    return 0;
}

static int port_runner_wifi_init(enetx_port_t *self)
{
    self->p.port_cap = PORT_CAP_LAN_ONLY;
#if defined(CONFIG_BLOG)
    self->n.blog_phy = BLOG_WLANPHY;
    self->n.blog_chnl = self->n.blog_chnl_rx = 0;
#endif

    /* in case unload/reload clear previous value first */
    mux_set_rx_index(root_sw, self->p.port_id, NULL);
    if (mux_set_rx_index(root_sw, self->p.port_id, self))
        return -1;

    return 0;
}

static int port_runner_wifi_uninit(enetx_port_t *self)
{
    unregister_netdevice_notifier(&nb);
    
    if (mux_set_rx_index(root_sw, self->p.port_id, NULL))
        return -1;

    return 0;
}

port_ops_t port_runner_wifi =
{
    .init = port_runner_wifi_init,
    .uninit = port_runner_wifi_uninit,
};