137 lines
3.9 KiB
C
137 lines
3.9 KiB
C
/**
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* @file
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* Ethernet Interface Skeleton
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*
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*/
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/*
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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/*
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* This file is a skeleton for developing Ethernet network interface
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* drivers for lwIP. Add code to the low_level functions and do a
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* search-and-replace for the word "ethernetif" to replace it with
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* something that better describes your network interface.
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*/
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#include <minix/sysutil.h>
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#include <minix/netsock.h>
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#include "lwip/opt.h"
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#include "lwip/def.h"
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#include "lwip/mem.h"
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#include "lwip/pbuf.h"
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#include "lwip/sys.h"
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#include <lwip/stats.h>
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#include <lwip/snmp.h>
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#include <netif/etharp.h>
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#include <net/gen/ether.h>
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#include <net/gen/eth_io.h>
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#include "proto.h"
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#include "driver.h"
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extern endpoint_t lwip_ep;
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static err_t low_level_output(__unused struct netif *netif, struct pbuf *pbuf)
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{
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struct nic * nic;
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nic = (struct nic *) netif->state;
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assert(&nic->netif == netif);
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debug_print("device /dev/%s", nic->name);
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if (driver_tx_enqueue(nic, pbuf) != OK)
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return ERR_MEM;
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/* if the driver is idle, start transmitting the packet */
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if (nic->state == DRV_IDLE) {
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if (!driver_tx(nic))
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return ERR_MEM;
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}
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return ERR_OK;
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}
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static void low_level_init(struct netif *netif)
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{
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message m;
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struct nic * nic = (struct nic *) netif->state;
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assert(nic);
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/* set MAC hardware address length */
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netif->hwaddr_len = ETHARP_HWADDR_LEN;
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/* maximum transfer unit */
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netif->mtu = 1500;
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nic->max_pkt_sz = ETH_MAX_PACK_SIZE;
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nic->min_pkt_sz = ETH_MIN_PACK_SIZE;
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/* device capabilities */
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netif->flags = NETIF_FLAG_ETHARP;
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m.DL_MODE = DL_NOMODE;
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if (nic->flags & NWEO_EN_BROAD)
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m.DL_MODE |= DL_BROAD_REQ;
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if (nic->flags & NWEO_EN_MULTI)
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m.DL_MODE |= DL_MULTI_REQ;
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if (nic->flags & NWEO_EN_PROMISC)
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m.DL_MODE |= DL_PROMISC_REQ;
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m.m_type = DL_CONF;
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if (asynsend(((struct nic *)netif->state)->drv_ep , &m) != OK)
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printf("LWIP : ERROR cannot send DL_CONF to driver\n");
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}
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err_t ethernetif_init(struct netif *netif)
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{
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/*
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* Initialize the snmp variables and counters inside the struct netif.
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* The last argument should be replaced with your link speed, in units
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* of bits per second.
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NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, LINK_SPEED_OF_YOUR_NETIF_IN_BPS);
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*/
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netif->output = etharp_output;
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netif->linkoutput = low_level_output;
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/* initialize the hardware */
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low_level_init(netif);
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return ERR_OK;
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}
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