mirror of
https://github.com/ep00ch/lwip-contrib-mac.git
synced 2024-08-27 11:29:21 +00:00
369 lines
12 KiB
C
369 lines
12 KiB
C
/*
|
|
* Copyright (c) 2001,2002 Florian Schulze.
|
|
* 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. Neither the name of the authors nor the names of the contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``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 AUTHORS OR CONTRIBUTORS 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.
|
|
*
|
|
* pktif.c - This file is part of lwIP pktif
|
|
*
|
|
****************************************************************************
|
|
*
|
|
* This file is derived from an example in lwIP with the following license:
|
|
*
|
|
* Copyright (c) 2001, 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. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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.
|
|
*
|
|
*/
|
|
|
|
#include "pktif.h"
|
|
|
|
/* get the windows definitions of the following 4 functions out of the way */
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
|
|
#include "lwip/debug.h"
|
|
|
|
#include "lwip/opt.h"
|
|
#include "lwip/def.h"
|
|
#include "lwip/mem.h"
|
|
#include "lwip/pbuf.h"
|
|
#include "lwip/stats.h"
|
|
#include "lwip/sys.h"
|
|
#include "lwip/ip.h"
|
|
#include "lwip/snmp.h"
|
|
#include "lwip/tcpip.h"
|
|
|
|
#include "netif/etharp.h"
|
|
#include "pktdrv.h"
|
|
|
|
/* include the port-dependent configuration */
|
|
#include "lwipcfg_msvc.h"
|
|
|
|
/* Define those to better describe your network interface.
|
|
For now, we use 'e0', 'e1', 'e2' and so on */
|
|
#define IFNAME0 'e'
|
|
#define IFNAME1 '0'
|
|
|
|
/* index of the network adapter to use for lwIP */
|
|
#ifndef PACKET_LIB_ADAPTER_NR
|
|
#define PACKET_LIB_ADAPTER_NR 0
|
|
#endif
|
|
|
|
/* Define PHY delay when "link up" */
|
|
#ifndef PHY_LINKUP_DELAY
|
|
#define PHY_LINKUP_DELAY 5000
|
|
#endif
|
|
|
|
/* link state notification macro */
|
|
#if NO_SYS
|
|
#define NOTIFY_LINKSTATE(netif,linkfunc) linkfunc(netif)
|
|
#else /* NO_SYS*/
|
|
#define NOTIFY_LINKSTATE(netif,linkfunc) tcpip_timeout(PHY_LINKUP_DELAY, (sys_timeout_handler)linkfunc, netif)
|
|
#endif /* NO_SYS*/
|
|
|
|
/* Forward declarations. */
|
|
void ethernetif_process_input(void *arg, void *packet, int len);
|
|
|
|
/*-----------------------------------------------------------------------------------*/
|
|
static void
|
|
low_level_init(struct netif *netif)
|
|
{
|
|
char adapter_mac_addr[ETHARP_HWADDR_LEN];
|
|
char my_mac_addr[ETHARP_HWADDR_LEN] = LWIP_MAC_ADDR_BASE;
|
|
|
|
/* Do whatever else is needed to initialize interface. */
|
|
if ((netif->state = init_adapter(PACKET_LIB_ADAPTER_NR, adapter_mac_addr,
|
|
ethernetif_process_input, netif)) == NULL) {
|
|
printf("ERROR initializing network adapter %d!\n", PACKET_LIB_ADAPTER_NR);
|
|
LWIP_ASSERT("ERROR initializing network adapter!\n", 0);
|
|
return;
|
|
}
|
|
|
|
/* change the MAC address to a unique value
|
|
so that multiple ethernetifs are supported */
|
|
my_mac_addr[ETHARP_HWADDR_LEN - 1] += netif->num;
|
|
/* Copy MAC addr */
|
|
memcpy(&netif->hwaddr, my_mac_addr, ETHARP_HWADDR_LEN);
|
|
|
|
LWIP_DEBUGF(NETIF_DEBUG, ("pktif: eth_addr %02X%02X%02X%02X%02X%02X\n",netif->hwaddr[0],netif->hwaddr[1],netif->hwaddr[2],netif->hwaddr[3],netif->hwaddr[4],netif->hwaddr[5]));
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------------------*/
|
|
/*
|
|
* low_level_output():
|
|
*
|
|
* Should do the actual transmission of the packet. The packet is
|
|
* contained in the pbuf that is passed to the function. This pbuf
|
|
* might be chained.
|
|
*
|
|
*/
|
|
/*-----------------------------------------------------------------------------------*/
|
|
static err_t
|
|
low_level_output(struct netif *netif, struct pbuf *p)
|
|
{
|
|
struct pbuf *q;
|
|
unsigned char buffer[1600];
|
|
unsigned char *ptr;
|
|
|
|
/* initiate transfer(); */
|
|
if (p->tot_len >= sizeof(buffer)) {
|
|
return ERR_BUF;
|
|
}
|
|
ptr = buffer;
|
|
for(q = p; q != NULL; q = q->next) {
|
|
/* Send the data from the pbuf to the interface, one pbuf at a
|
|
time. The size of the data in each pbuf is kept in the ->len
|
|
variable. */
|
|
/* send data from(q->payload, q->len); */
|
|
LWIP_DEBUGF(NETIF_DEBUG, ("netif: send ptr %p q->payload %p q->len %i q->next %p\n", ptr, q->payload, (int)q->len, q->next));
|
|
memcpy(ptr, q->payload, q->len);
|
|
ptr += q->len;
|
|
}
|
|
|
|
/* signal that packet should be sent(); */
|
|
if (packet_send(netif->state, buffer, p->tot_len) < 0) {
|
|
return ERR_BUF;
|
|
}
|
|
|
|
LINK_STATS_INC(link.xmit);
|
|
return ERR_OK;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------------------*/
|
|
/*
|
|
* low_level_input():
|
|
*
|
|
* Should allocate a pbuf and transfer the bytes of the incoming
|
|
* packet from the interface into the pbuf.
|
|
*
|
|
*/
|
|
/*-----------------------------------------------------------------------------------*/
|
|
static struct pbuf *
|
|
low_level_input(struct netif *netif, void *packet, int packet_len)
|
|
{
|
|
struct pbuf *p, *q;
|
|
int start, length;
|
|
struct eth_hdr *ethhdr;
|
|
|
|
/* Obtain the size of the packet and put it into the "len" variable. */
|
|
length = packet_len;
|
|
if (length <= 0) {
|
|
return NULL;
|
|
}
|
|
|
|
ethhdr = (struct eth_hdr*)packet;
|
|
/* MAC filter: only let my MAC or non-unicast through */
|
|
if (((memcmp(ðhdr->dest, &netif->hwaddr, ETHARP_HWADDR_LEN)) &&
|
|
((ethhdr->dest.addr[0] & 0x01) == 0)) ||
|
|
/* and don't let feedback packets through (limitation in winpcap?) */
|
|
((!memcmp(ðhdr->src, netif->hwaddr, ETHARP_HWADDR_LEN)) &&
|
|
((ethhdr->dest.addr[0] & 0x01) == 0))) {
|
|
return NULL;
|
|
}
|
|
|
|
/* We allocate a pbuf chain of pbufs from the pool. */
|
|
p = pbuf_alloc(PBUF_RAW, (u16_t)length, PBUF_POOL);
|
|
LWIP_DEBUGF(NETIF_DEBUG, ("netif: recv length %i p->tot_len %i\n", length, (int)p->tot_len));
|
|
|
|
if (p != NULL) {
|
|
/* We iterate over the pbuf chain until we have read the entire
|
|
packet into the pbuf. */
|
|
start=0;
|
|
for (q = p; q != NULL; q = q->next) {
|
|
/* Read enough bytes to fill this pbuf in the chain. The
|
|
available data in the pbuf is given by the q->len
|
|
variable. */
|
|
/* read data into(q->payload, q->len); */
|
|
LWIP_DEBUGF(NETIF_DEBUG, ("netif: recv start %i length %i q->payload %p q->len %i q->next %p\n", start, length, q->payload, (int)q->len, q->next));
|
|
memcpy(q->payload, &((char*)packet)[start], q->len);
|
|
start += q->len;
|
|
length -= q->len;
|
|
if (length<=0) {
|
|
break;
|
|
}
|
|
}
|
|
LINK_STATS_INC(link.recv);
|
|
} else {
|
|
/* drop packet(); */
|
|
LINK_STATS_INC(link.memerr);
|
|
LINK_STATS_INC(link.drop);
|
|
}
|
|
|
|
return p;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------------------*/
|
|
/*
|
|
* ethernetif_input():
|
|
*
|
|
* This function should be called when a packet is ready to be read
|
|
* from the interface. It uses the function low_level_input() that
|
|
* should handle the actual reception of bytes from the network
|
|
* interface.
|
|
*
|
|
*/
|
|
/*-----------------------------------------------------------------------------------*/
|
|
static void
|
|
ethernetif_input(struct netif *netif, void *packet, int packet_len)
|
|
{
|
|
struct eth_hdr *ethhdr;
|
|
struct pbuf *p;
|
|
|
|
/* move received packet into a new pbuf */
|
|
p = low_level_input(netif, packet, packet_len);
|
|
/* no packet could be read, silently ignore this */
|
|
if (p == NULL) {
|
|
return;
|
|
}
|
|
|
|
/* points to packet payload, which starts with an Ethernet header */
|
|
ethhdr = p->payload;
|
|
switch (htons(ethhdr->type)) {
|
|
/* IP or ARP packet? */
|
|
case ETHTYPE_IP:
|
|
case ETHTYPE_ARP:
|
|
#if PPPOE_SUPPORT
|
|
/* PPPoE packet? */
|
|
case ETHTYPE_PPPOEDISC:
|
|
case ETHTYPE_PPPOE:
|
|
#endif /* PPPOE_SUPPORT */
|
|
/* full packet send to tcpip_thread to process */
|
|
if (netif->input(p, netif)!=ERR_OK) {
|
|
LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
|
|
pbuf_free(p);
|
|
p = NULL;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
pbuf_free(p);
|
|
p = NULL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------------------*/
|
|
/*
|
|
* ethernetif_init():
|
|
*
|
|
* Should be called at the beginning of the program to set up the
|
|
* network interface. It calls the function low_level_init() to do the
|
|
* actual setup of the hardware.
|
|
*
|
|
*/
|
|
/*-----------------------------------------------------------------------------------*/
|
|
err_t
|
|
ethernetif_init(struct netif *netif)
|
|
{
|
|
static int ethernetif_index;
|
|
|
|
int local_index;
|
|
SYS_ARCH_DECL_PROTECT(lev);
|
|
SYS_ARCH_PROTECT(lev);
|
|
local_index = ethernetif_index++;
|
|
SYS_ARCH_UNPROTECT(lev);
|
|
|
|
netif->name[0] = IFNAME0;
|
|
netif->name[1] = IFNAME1 + local_index;
|
|
netif->linkoutput = low_level_output;
|
|
netif->output = etharp_output;
|
|
|
|
netif->mtu = 1500;
|
|
netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_IGMP | NETIF_FLAG_LINK_UP;
|
|
netif->hwaddr_len = ETHARP_HWADDR_LEN;
|
|
|
|
NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, 100000000);
|
|
|
|
low_level_init(netif);
|
|
|
|
return ERR_OK;
|
|
}
|
|
|
|
void
|
|
ethernetif_shutdown(struct netif *netif)
|
|
{
|
|
shutdown_adapter(netif->state);
|
|
}
|
|
|
|
void
|
|
ethernetif_poll(struct netif *netif)
|
|
{
|
|
update_adapter(netif->state);
|
|
|
|
#if LWIP_NETIF_LINK_CALLBACK
|
|
/* Process the link status change */
|
|
switch (link_adapter(netif->state)) {
|
|
case LINKEVENT_UP: {
|
|
NOTIFY_LINKSTATE(netif,netif_set_link_up);
|
|
break;
|
|
}
|
|
case LINKEVENT_DOWN: {
|
|
NOTIFY_LINKSTATE(netif,netif_set_link_down);
|
|
break;
|
|
}
|
|
}
|
|
#endif /* LWIP_NETIF_LINK_CALLBACK */
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------------------*/
|
|
/*
|
|
* pktif_update():
|
|
*
|
|
* Needs to be called periodically to get new packets. This could
|
|
* be done inside a thread.
|
|
*/
|
|
/*-----------------------------------------------------------------------------------*/
|
|
void
|
|
ethernetif_process_input(void *arg, void *packet, int packet_len)
|
|
{
|
|
struct netif *netif = (struct netif*)arg;
|
|
ethernetif_input(netif, packet, packet_len);
|
|
}
|