/**

* @file

* Ethernet Interface Skeleton

*

*/

/*

* Copyright (c) 2001-2004 Swedish Institute of Computer Science.

* All rights reserved.

*

* Redistribution and use in source and binary forms, with or without modification,

* are permitted provided that the following conditions are met:

*

* 1. Redistributions of source code must retain the above copyright notice,

* this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright notice,

* this list of conditions and the following disclaimer in the documentation

* and/or other materials provided with the distribution.

* 3. The name of the author may not be used to endorse or promote products

* derived from this software without specific prior written permission.

*

* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED

* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT

* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT

* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY

* OF SUCH DAMAGE.

*

* This file is part of the lwIP TCP/IP stack.

*

* Author: Adam Dunkels <adam@sics.se>

*

*/

/*

* This file is a skeleton for developing Ethernet network interface

* drivers for lwIP. Add code to the low_level functions and do a

* search-and-replace for the word "ethernetif" to replace it with

* something that better describes your network interface.

*/

#include <minix/sysutil.h>

#include <minix/netsock.h>

#include "lwip/opt.h"

#include "lwip/def.h"

#include "lwip/mem.h"

#include "lwip/pbuf.h"

#include "lwip/sys.h"

#include <lwip/stats.h>

#include <lwip/snmp.h>

#include <netif/etharp.h>

#include <net/gen/ether.h>

#include <net/gen/eth_io.h>

#include "proto.h"

#include "driver.h"

extern endpoint_t lwip_ep;

static err_t low_level_output(__unused struct netif *netif, struct pbuf *pbuf)

{

struct nic * nic;

nic = (struct nic *) netif->state;

assert(&nic->netif == netif);

debug_print("device /dev/%s", nic->name);

if (driver_tx_enqueue(nic, pbuf) != OK)

return ERR_MEM;

/* if the driver is idle, start transmitting the packet */

if (nic->state == DRV_IDLE) {

if (!driver_tx(nic))

return ERR_MEM;

}

return ERR_OK;

}

static void low_level_init(struct netif *netif)

{

message m;

struct nic * nic = (struct nic *) netif->state;

assert(nic);

/* set MAC hardware address length */

netif->hwaddr_len = ETHARP_HWADDR_LEN;

/* maximum transfer unit */

netif->mtu = 1500;

nic->max_pkt_sz = ETH_MAX_PACK_SIZE;

nic->min_pkt_sz = ETH_MIN_PACK_SIZE;

/* device capabilities */

netif->flags = NETIF_FLAG_ETHARP;

m.m_net_netdrv_dl_conf.mode = DL_NOMODE;

if (nic->flags & NWEO_EN_BROAD)

m.m_net_netdrv_dl_conf.mode |= DL_BROAD_REQ;

if (nic->flags & NWEO_EN_MULTI)

m.m_net_netdrv_dl_conf.mode |= DL_MULTI_REQ;

if (nic->flags & NWEO_EN_PROMISC)

m.m_net_netdrv_dl_conf.mode |= DL_PROMISC_REQ;

m.m_type = DL_CONF;

if (asynsend(((struct nic *)netif->state)->drv_ep , &m) != OK)

printf("LWIP : ERROR cannot send DL_CONF to driver\n");

}

err_t ethernetif_init(struct netif *netif)

{

/*

* Initialize the snmp variables and counters inside the struct netif.

* The last argument should be replaced with your link speed, in units

* of bits per second.

NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, LINK_SPEED_OF_YOUR_NETIF_IN_BPS);

*/

netif->output = etharp_output;

netif->linkoutput = low_level_output;

/* initialize the hardware */

low_level_init(netif);

return ERR_OK;

}