243 lines
7 KiB
C
243 lines
7 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>
|
|
*
|
|
*/
|
|
|
|
#include "lwip/opt.h"
|
|
|
|
#include "lwip/def.h"
|
|
#include "lwip/mem.h"
|
|
#include "lwip/pbuf.h"
|
|
#include "lwip/stats.h"
|
|
#include "lwip/snmp.h"
|
|
#include "lwip/ethip6.h"
|
|
#include "netif/etharp.h"
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "esp_eth.h"
|
|
#include "tcpip_adapter.h"
|
|
|
|
/* Define those to better describe your network interface. */
|
|
#define IFNAME0 'e'
|
|
#define IFNAME1 'n'
|
|
|
|
/**
|
|
* In this function, the hardware should be initialized.
|
|
* Called from ethernetif_init().
|
|
*
|
|
* @param netif the already initialized lwip network interface structure
|
|
* for this ethernetif
|
|
*/
|
|
static void
|
|
ethernet_low_level_init(struct netif *netif)
|
|
{
|
|
/* set MAC hardware address length */
|
|
netif->hwaddr_len = ETHARP_HWADDR_LEN;
|
|
|
|
/* set MAC hardware address */
|
|
|
|
/* maximum transfer unit */
|
|
netif->mtu = 1500;
|
|
|
|
/* device capabilities */
|
|
/* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */
|
|
netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
|
|
|
|
#if ESP_LWIP
|
|
#if LWIP_IGMP
|
|
netif->flags |= NETIF_FLAG_IGMP;
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef CONFIG_EMAC_L2_TO_L3_RX_BUF_MODE
|
|
netif->l2_buffer_free_notify = esp_eth_free_rx_buf;
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* This function 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.
|
|
*
|
|
* @param netif the lwip network interface structure for this ethernetif
|
|
* @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)
|
|
* @return ERR_OK if the packet could be sent
|
|
* an err_t value if the packet couldn't be sent
|
|
*
|
|
* @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to
|
|
* strange results. You might consider waiting for space in the DMA queue
|
|
* to become availale since the stack doesn't retry to send a packet
|
|
* dropped because of memory failure (except for the TCP timers).
|
|
*/
|
|
static err_t
|
|
ethernet_low_level_output(struct netif *netif, struct pbuf *p)
|
|
{
|
|
struct pbuf *q;
|
|
esp_interface_t eth_if = tcpip_adapter_get_esp_if(netif);
|
|
|
|
if (eth_if != ESP_IF_ETH) {
|
|
LWIP_DEBUGF(NETIF_DEBUG,("eth_if=%d netif=%p pbuf=%p len=%d\n", eth_if, netif, p, p->len));
|
|
|
|
return ERR_IF;
|
|
}
|
|
|
|
#if ESP_LWIP
|
|
q = p;
|
|
u16_t pbuf_x_len = 0;
|
|
pbuf_x_len = q->len;
|
|
if(q->next !=NULL) {
|
|
//char cnt = 0;
|
|
struct pbuf *tmp = q->next;
|
|
while(tmp != NULL) {
|
|
memcpy( (u8_t *)( (u8_t *)(q->payload) + pbuf_x_len), (u8_t *)tmp->payload , tmp->len );
|
|
pbuf_x_len += tmp->len;
|
|
//cnt++;
|
|
tmp = tmp->next;
|
|
}
|
|
}
|
|
|
|
return esp_eth_tx(q->payload, pbuf_x_len);
|
|
#else
|
|
for(q = p; q != NULL; q = q->next) {
|
|
return esp_emac_tx(q->payload, q->len);
|
|
}
|
|
return ERR_OK;
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* 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. Then the type of the received packet is determined and
|
|
* the appropriate input function is called.
|
|
*
|
|
* @param netif the lwip network interface structure for this ethernetif
|
|
*/
|
|
void
|
|
ethernetif_input(struct netif *netif, void *buffer, uint16_t len)
|
|
{
|
|
struct pbuf *p;
|
|
|
|
if(buffer== NULL || netif == NULL)
|
|
goto _exit;
|
|
#ifdef CONFIG_EMAC_L2_TO_L3_RX_BUF_MODE
|
|
p = pbuf_alloc(PBUF_RAW, len, PBUF_RAM);
|
|
if (p == NULL) {
|
|
return;
|
|
}
|
|
p->l2_owner = NULL;
|
|
memcpy(p->payload, buffer, len);
|
|
|
|
/* 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);
|
|
}
|
|
|
|
#else
|
|
p = pbuf_alloc(PBUF_RAW, len, PBUF_REF);
|
|
if (p == NULL){
|
|
return;
|
|
}
|
|
p->payload = buffer;
|
|
p->l2_owner = netif;
|
|
p->l2_buf = buffer;
|
|
|
|
/* 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"));
|
|
p->l2_owner = NULL;
|
|
pbuf_free(p);
|
|
}
|
|
#endif
|
|
_exit:
|
|
;
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* This function should be passed as a parameter to netif_add().
|
|
*
|
|
* @param netif the lwip network interface structure for this ethernetif
|
|
* @return ERR_OK if the loopif is initialized
|
|
* ERR_MEM if private data couldn't be allocated
|
|
* any other err_t on error
|
|
*/
|
|
err_t
|
|
ethernetif_init(struct netif *netif)
|
|
{
|
|
LWIP_ASSERT("netif != NULL", (netif != NULL));
|
|
|
|
#if LWIP_NETIF_HOSTNAME
|
|
/* Initialize interface hostname */
|
|
|
|
#if ESP_LWIP
|
|
netif->hostname = "espressif";
|
|
#else
|
|
netif->hostname = "lwip";
|
|
#endif
|
|
|
|
#endif /* LWIP_NETIF_HOSTNAME */
|
|
|
|
/*
|
|
* 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->name[0] = IFNAME0;
|
|
netif->name[1] = IFNAME1;
|
|
/* We directly use etharp_output() here to save a function call.
|
|
* You can instead declare your own function an call etharp_output()
|
|
* from it if you have to do some checks before sending (e.g. if link
|
|
* is available...) */
|
|
netif->output = etharp_output;
|
|
#if LWIP_IPV6
|
|
netif->output_ip6 = ethip6_output;
|
|
#endif /* LWIP_IPV6 */
|
|
netif->linkoutput = ethernet_low_level_output;
|
|
|
|
/* initialize the hardware */
|
|
ethernet_low_level_init(netif);
|
|
|
|
return ERR_OK;
|
|
}
|