minix/servers/lwip/eth.c
Tomas Hruby dca25a1b39 LWIP - the lwip server
The server implements inet-like interface to vfs and drivers. The core
functionality is contained in the liblwip.
2011-04-07 07:44:11 +00:00

136 lines
3.9 KiB
C

/**
* @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 "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.DL_MODE = DL_NOMODE;
if (nic->flags & NWEO_EN_BROAD)
m.DL_MODE |= DL_BROAD_REQ;
if (nic->flags & NWEO_EN_MULTI)
m.DL_MODE |= DL_MULTI_REQ;
if (nic->flags & NWEO_EN_PROMISC)
m.DL_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;
}