1. Original register mapping for LAN8720 has some registers that doesn't exist/support. So just remove them, and fix the power and init function for LAN8720. 2. GPIO16 and GPIO17 is occupied by PSRAM, so only ETH_CLOCK_GPIO_IN mode is supported in that case if using PSRAM. 3. Fix bug of OTA failing with Ethernet 4. Fix bug of multicast with Ethernet 5. Fix potential memory leak
259 lines
7.7 KiB
C
259 lines
7.7 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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#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/stats.h"
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#include "lwip/snmp.h"
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#include "lwip/ethip6.h"
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#include "netif/etharp.h"
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#include <stdio.h>
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#include <string.h>
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#include "esp_eth.h"
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#include "tcpip_adapter.h"
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/* Define those to better describe your network interface. */
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#define IFNAME0 'e'
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#define IFNAME1 'n'
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/**
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* In this function, the hardware should be initialized.
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* Called from ethernetif_init().
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*
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* @param netif the already initialized lwip network interface structure
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* for this ethernetif
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*/
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static void
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ethernet_low_level_init(struct netif *netif)
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{
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/* set MAC hardware address length */
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netif->hwaddr_len = ETHARP_HWADDR_LEN;
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/* set MAC hardware address */
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/* maximum transfer unit */
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netif->mtu = 1500;
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/* device capabilities */
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/* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */
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netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
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#if ESP_LWIP
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#if LWIP_IGMP
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netif->flags |= NETIF_FLAG_IGMP;
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#endif
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#endif
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#ifndef CONFIG_EMAC_L2_TO_L3_RX_BUF_MODE
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netif->l2_buffer_free_notify = esp_eth_free_rx_buf;
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#endif
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}
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/**
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* This function should do the actual transmission of the packet. The packet is
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* contained in the pbuf that is passed to the function. This pbuf
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* might be chained.
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*
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* @param netif the lwip network interface structure for this ethernetif
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* @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)
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* @return ERR_OK if the packet could be sent
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* an err_t value if the packet couldn't be sent
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*
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* @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to
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* strange results. You might consider waiting for space in the DMA queue
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* to become availale since the stack doesn't retry to send a packet
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* dropped because of memory failure (except for the TCP timers).
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*/
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static err_t ESP_IRAM_ATTR
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ethernet_low_level_output(struct netif *netif, struct pbuf *p)
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{
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struct pbuf *q = p;
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esp_interface_t eth_if = tcpip_adapter_get_esp_if(netif);
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esp_err_t ret;
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if (eth_if != ESP_IF_ETH) {
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LWIP_DEBUGF(NETIF_DEBUG, ("eth_if=%d netif=%p pbuf=%p len=%d\n", eth_if, netif, p, p->len));
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return ERR_IF;
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}
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if (q->next == NULL) {
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ret = esp_eth_tx(q->payload, q->len);
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} else {
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LWIP_DEBUGF(PBUF_DEBUG, ("low_level_output: pbuf is a list, application may has bug"));
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q = pbuf_alloc(PBUF_RAW_TX, p->tot_len, PBUF_RAM);
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if (q != NULL) {
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q->l2_owner = NULL;
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pbuf_copy(q, p);
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} else {
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return ERR_MEM;
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}
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ret = esp_eth_tx(q->payload, q->len);
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pbuf_free(q);
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}
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/* error occured when no memory or peripheral wrong state */
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if (ret != ESP_OK)
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{
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return ERR_ABRT;
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} else {
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return ERR_OK;
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}
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}
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/**
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* This function should be called when a packet is ready to be read
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* from the interface. It uses the function low_level_input() that
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* should handle the actual reception of bytes from the network
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* interface. Then the type of the received packet is determined and
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* the appropriate input function is called.
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*
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* @param netif the lwip network interface structure for this ethernetif
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* @param buffer the ethernet buffer
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* @param len the len of buffer
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*
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* @note When CONFIG_EMAC_L2_TO_L3_RX_BUF_MODE is enabled, a copy of buffer
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* will be made for high layer (LWIP) and ethernet is responsible for
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* freeing the buffer. Otherwise, high layer and ethernet share the
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* same buffer and high layer is responsible for freeing the buffer.
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*/
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void ESP_IRAM_ATTR
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ethernetif_input(struct netif *netif, void *buffer, uint16_t len)
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{
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struct pbuf *p;
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if(buffer== NULL || !netif_is_up(netif)) {
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#ifndef CONFIG_EMAC_L2_TO_L3_RX_BUF_MODE
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if (buffer) {
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esp_eth_free_rx_buf(buffer);
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}
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#endif
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return;
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}
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#ifdef CONFIG_EMAC_L2_TO_L3_RX_BUF_MODE
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p = pbuf_alloc(PBUF_RAW, len, PBUF_RAM);
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if (p == NULL) {
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return;
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}
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p->l2_owner = NULL;
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memcpy(p->payload, buffer, len);
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/* full packet send to tcpip_thread to process */
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if (netif->input(p, netif) != ERR_OK) {
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LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
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pbuf_free(p);
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}
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#else
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p = pbuf_alloc(PBUF_RAW, len, PBUF_REF);
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if (p == NULL){
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esp_eth_free_rx_buf(buffer);
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return;
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}
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p->payload = buffer;
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p->l2_owner = netif;
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p->l2_buf = buffer;
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/* full packet send to tcpip_thread to process */
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if (netif->input(p, netif) != ERR_OK) {
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LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
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pbuf_free(p);
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}
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#endif
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}
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/**
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* Should be called at the beginning of the program to set up the
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* network interface. It calls the function low_level_init() to do the
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* actual setup of the hardware.
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*
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* This function should be passed as a parameter to netif_add().
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*
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* @param netif the lwip network interface structure for this ethernetif
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* @return ERR_OK if the loopif is initialized
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* ERR_MEM if private data couldn't be allocated
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* any other err_t on error
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*/
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err_t
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ethernetif_init(struct netif *netif)
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{
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LWIP_ASSERT("netif != NULL", (netif != NULL));
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#if LWIP_NETIF_HOSTNAME
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/* Initialize interface hostname */
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#if ESP_LWIP
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netif->hostname = "espressif";
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#else
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netif->hostname = "lwip";
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#endif
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#endif /* LWIP_NETIF_HOSTNAME */
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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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*/
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if(esp_eth_get_speed() == ETH_SPEED_MODE_100M){
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NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, 100000000);
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} else {
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NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, 10000000);
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}
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netif->name[0] = IFNAME0;
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netif->name[1] = IFNAME1;
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/* We directly use etharp_output() here to save a function call.
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* You can instead declare your own function an call etharp_output()
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* from it if you have to do some checks before sending (e.g. if link
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* is available...) */
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netif->output = etharp_output;
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#if LWIP_IPV6
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netif->output_ip6 = ethip6_output;
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#endif /* LWIP_IPV6 */
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netif->linkoutput = ethernet_low_level_output;
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/* initialize the hardware */
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ethernet_low_level_init(netif);
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return ERR_OK;
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}
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