OVMS3-idf/components/lwip/port/esp32/netif/wlanif.c
Felipe Neves fc00236d79 components/esp_common: added esp_macros.h that aims to hold useful macros
esp_common/esp_compiler: renamed esp_macros file to a more specific one

esp_common/esp_compiler: removed CONTAINER_OF macro, it was a duplicate

components/freertos: placed likely macros around port and critical sections

component/freertos: placed likely macros on lists module

components/freertos: placed unlikely macros inside of assertion points, they likely wont fail

components/freertos: added likely macros on queue modules

FreeRTOS queues are one of most hot code path, because to queues itself tend to
be used a lot by the applications, besides that, queues are the basic primitive
to form both mutexes and semaphores, The focus here is to place likely
macros inside lowest level send and receive routines, since they're common
from all kobjects: semaphores, queues, mutexes and FR internals (like timer queue)

components/lwip: placed likely/unlikey on net-interfaces code

components/fatfs: added unlikely macros on disk drivers code

components/spiffs: added unlikely macros on low level fs driver

components/freertos: added likely/unlikely macros on timers and ticker

freertos/event_group: placed likely/unlikely macros on hot event group code paths

components/sdmmc: placed likely / unlikely macros on lower level path of sdmmc

components/bt: placed unlikely macros around bt HCI functions calling

components/lwip: added likely/unlikely macros on OS port code section

components/freertos: fix code style on tick handler
2020-01-03 14:42:49 -03:00

264 lines
7.6 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 "netif/wlanif.h"
#include <stdio.h>
#include <string.h>
#include "esp_netif.h"
#include "esp_netif_net_stack.h"
#include "esp_compiler.h"
/**
* @brief Free resources allocated in L2 layer
*
* @param buf memory alloc in L2 layer
* @note this function is also the callback when invoke pbuf_free
*/
static void lwip_netif_wifi_free_rx_buffer(struct netif *netif, void *buf)
{
esp_netif_t *esp_netif = esp_netif_get_handle_from_netif_impl(netif);
esp_netif_free_rx_buffer(esp_netif, buf);
}
/**
* 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
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
#if !ESP_L2_TO_L3_COPY
netif->l2_buffer_free_notify = lwip_netif_wifi_free_rx_buffer;
#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 ESP_IRAM_ATTR
low_level_output(struct netif *netif, struct pbuf *p)
{
esp_netif_t *esp_netif = esp_netif_get_handle_from_netif_impl(netif);
if (esp_netif == NULL) {
return ERR_IF;
}
struct pbuf *q = p;
err_t ret;
if(q->next == NULL) {
ret = esp_netif_transmit(esp_netif, q->payload, q->len);
} else {
LWIP_DEBUGF(PBUF_DEBUG, ("low_level_output: pbuf is a list, application may has bug"));
q = pbuf_alloc(PBUF_RAW_TX, p->tot_len, PBUF_RAM);
if (q != NULL) {
q->l2_owner = NULL;
pbuf_copy(q, p);
} else {
return ERR_MEM;
}
ret = esp_netif_transmit(esp_netif, q->payload, q->len);
pbuf_free(q);
}
return ret;
}
/**
* 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 ESP_IRAM_ATTR
wlanif_input(void *h, void *buffer, size_t len, void* eb)
{
struct netif * netif = h;
esp_netif_t *esp_netif = esp_netif_get_handle_from_netif_impl(netif);
struct pbuf *p;
if(unlikely(!buffer || !netif_is_up(netif))) {
if (eb) {
esp_netif_free_rx_buffer(esp_netif, eb);
}
return;
}
#if (ESP_L2_TO_L3_COPY == 1)
p = pbuf_alloc(PBUF_RAW, len, PBUF_RAM);
if (p == NULL) {
// esp_wifi_internal_free_rx_buffer(eb);
esp_netif_free_rx_buffer(esp_netif, eb);
return;
}
p->l2_owner = NULL;
memcpy(p->payload, buffer, len);
esp_netif_free_rx_buffer(esp_netif, eb);
// esp_wifi_internal_free_rx_buffer(eb);
#else
p = pbuf_alloc(PBUF_RAW, len, PBUF_REF);
if (p == NULL){
esp_netif_free_rx_buffer(esp_netif, eb);
return;
}
p->payload = buffer;
p->l2_owner = netif;
p->l2_buf = eb;
#endif
/* full packet send to tcpip_thread to process */
if (unlikely(netif->input(p, netif) != ERR_OK)) {
LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
pbuf_free(p);
}
}
/**
* 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
wlanif_init(struct netif *netif)
{
LWIP_ASSERT("netif != NULL", (netif != NULL));
#if LWIP_NETIF_HOSTNAME
/* Initialize interface hostname */
#if ESP_LWIP
netif->hostname = CONFIG_LWIP_LOCAL_HOSTNAME;
#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, 100);
/* 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 = low_level_output;
/* initialize the hardware */
low_level_init(netif);
return ERR_OK;
}
err_t wlanif_init_sta(struct netif *netif) {
netif->name[0] = 's';
netif->name[1] = 't';
return wlanif_init(netif);
}
err_t wlanif_init_ap(struct netif *netif) {
netif->name[0] = 'a';
netif->name[1] = 'p';
return wlanif_init(netif);
}