kopia lustrzana https://github.com/espressif/esp-idf
101 wiersze
2.5 KiB
C
101 wiersze
2.5 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2001-2003 Swedish Institute of Computer Science
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* SPDX-FileContributor: 2022-2023 Espressif Systems (Shanghai) CO LTD
|
|
*/
|
|
#include <string.h>
|
|
#include "lwip/opt.h"
|
|
#include "lwip/pbuf.h"
|
|
#include "lwip/snmp.h"
|
|
#include "lwip/ethip6.h"
|
|
#include "netif/etharp.h"
|
|
|
|
#include "esp_netif.h"
|
|
#include "esp_netif_net_stack.h"
|
|
|
|
#define IFNAME0 't'
|
|
#define IFNAME1 'p'
|
|
|
|
static err_t
|
|
low_level_output(struct netif *netif, struct pbuf *p)
|
|
{
|
|
esp_netif_t *esp_netif = esp_netif_get_handle_from_netif_impl(netif);
|
|
char buf[1518]; /* max packet size including VLAN excluding CRC */
|
|
|
|
if (p->tot_len > sizeof(buf)) {
|
|
MIB2_STATS_NETIF_INC(netif, ifoutdiscards);
|
|
LWIP_DEBUGF(NETIF_DEBUG, ("tapif: packet too large"));
|
|
return ERR_IF;
|
|
}
|
|
|
|
/* initiate transfer(); */
|
|
pbuf_copy_partial(p, buf, p->tot_len, 0);
|
|
|
|
int ret = esp_netif_transmit(esp_netif, buf, p->tot_len);
|
|
/* Check error */
|
|
if (likely(ret == ESP_OK)) {
|
|
return ERR_OK;
|
|
}
|
|
if (ret == ESP_ERR_NO_MEM) {
|
|
return ERR_MEM;
|
|
}
|
|
return ERR_IF;
|
|
}
|
|
|
|
static void
|
|
low_level_init(struct netif *netif)
|
|
{
|
|
|
|
/* Obtain MAC address from network interface. */
|
|
netif->hwaddr[0] = 0x02;
|
|
netif->hwaddr[1] = 0x12;
|
|
netif->hwaddr[2] = 0x34;
|
|
netif->hwaddr[3] = 0x56;
|
|
netif->hwaddr[4] = 0x78;
|
|
netif->hwaddr[5] = 0xab;
|
|
netif->hwaddr_len = 6;
|
|
|
|
/* device capabilities */
|
|
netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_IGMP;
|
|
}
|
|
|
|
err_t lwip_tapif_init(struct netif *netif)
|
|
{
|
|
LWIP_ASSERT("Tried to initialize tapif with NULL netif", netif != NULL);
|
|
netif->name[0] = IFNAME0;
|
|
netif->name[1] = IFNAME1;
|
|
#if LWIP_IPV4
|
|
netif->output = etharp_output;
|
|
#endif /* LWIP_IPV4 */
|
|
#if LWIP_IPV6
|
|
netif->output_ip6 = ethip6_output;
|
|
#endif /* LWIP_IPV6 */
|
|
netif->linkoutput = low_level_output;
|
|
netif->mtu = 1500;
|
|
|
|
low_level_init(netif);
|
|
netif_set_link_up(netif);
|
|
return ERR_OK;
|
|
}
|
|
|
|
void lwip_tapif_input(void *h, void *buffer, size_t len, void *l2_buff)
|
|
{
|
|
struct netif *netif = h;
|
|
struct pbuf *p;
|
|
LWIP_ASSERT("running tapif input with NULL netif", netif != NULL);
|
|
|
|
p = pbuf_alloc(PBUF_RAW, len, PBUF_RAM);
|
|
if (p == NULL) {
|
|
return;
|
|
}
|
|
memcpy(p->payload, buffer, len);
|
|
|
|
/* full packet send to tcpip_thread to process */
|
|
if (unlikely(netif->input(p, netif) != ERR_OK)) {
|
|
LWIP_DEBUGF(NETIF_DEBUG, ("tapif_input: IP input error\n"));
|
|
pbuf_free(p);
|
|
}
|
|
}
|