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lwip: add code for sending gratuitous ARP periodically

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This commit is contained in:
zhangyanjiao 2018-09-11 14:36:42 +08:00
parent 9cce5f5a55
commit 237cc88b9f
4 changed files with 26 additions and 1 deletions
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17
components/lwip/Kconfig
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@ -128,6 +128,23 @@ config LWIP_ETHARP_TRUST_IP_MAC
So the recommendation is to disable this option.
Here the LAN peer means the other side to which the ESP station or soft-AP is connected.
config ESP_GRATUITOUS_ARP
bool "Send gratuitous ARP periodically"
default y
help
Enable this option allows to send gratuitous ARP periodically.
This option solve the compatibility issues.If the ARP table of the AP is old, and the AP
doesn't send ARP request to update it's ARP table, this will lead to the STA sending IP packet fail.
Thus we send gratuitous ARP periodically to let AP update it's ARP table.
config GARP_TMR_INTERVAL
int "GARP timer interval(seconds)"
default 60
depends on ESP_GRATUITOUS_ARP
help
Set the timer interval for gratuitous ARP. The default value is 60s
config TCPIP_RECVMBOX_SIZE
int "TCPIP task receive mail box size"
default 32

2
components/lwip/lwip

@ -1 +1 @@
Subproject commit 18548d1e256f7651fb4da48dbd770556e0eca8ce
Subproject commit e6bb43349ed859eba4c1e3cae15b932627c45c4b

1
components/lwip/port/esp32/include/lwipopts.h
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@ -739,6 +739,7 @@
#define ESP_PING 1
#define ESP_HAS_SELECT 1
#define ESP_AUTO_RECV 1
#define ESP_GRATUITOUS_ARP CONFIG_ESP_GRATUITOUS_ARP
#if CONFIG_LWIP_IRAM_OPTIMIZATION
#define ESP_IRAM_ATTR IRAM_ATTR

7
components/tcpip_adapter/tcpip_adapter_lwip.c
View File

@ -26,6 +26,7 @@
#include "lwip/ip6_addr.h"
#include "lwip/nd6.h"
#include "lwip/priv/tcpip_priv.h"
#include "lwip/netif.h"
#if LWIP_DNS /* don't build if not configured for use in lwipopts.h */
#include "lwip/dns.h"
#endif
@ -184,6 +185,12 @@ static esp_err_t tcpip_adapter_start(tcpip_adapter_if_t tcpip_if, uint8_t *mac,
netif_init = tcpip_if_to_netif_init_fn(tcpip_if);
assert(netif_init != NULL);
netif_add(esp_netif[tcpip_if], &ip_info->ip, &ip_info->netmask, &ip_info->gw, NULL, netif_init, tcpip_input);
#if ESP_GRATUITOUS_ARP
if (tcpip_if == TCPIP_ADAPTER_IF_STA || tcpip_if == TCPIP_ADAPTER_IF_ETH) {
netif_set_garp_flag(esp_netif[tcpip_if]);
}
#endif
}
if (tcpip_if == TCPIP_ADAPTER_IF_AP) {