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revert(net): remove ARP reset on link changes

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2026-06-10 10:16:25 +08:00
parent 322bed655c
commit 15c2f2776c
1 changed files with 1 additions and 57 deletions
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Core/Src/main.c
+1 -57
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@@ -27,7 +27,6 @@
#include "ethernetif.h"
#include "ch390_runtime.h"
#include "lwip/init.h"
#include "lwip/etharp.h"
#include "lwip/timeouts.h"
#include "tcp_client.h"
#include "tcp_server.h"
@@ -42,9 +41,6 @@
#define APP_TCP_TO_UART_CHUNK_SIZE 128u
#define STACK_GUARD_WORD 0xA5A5A5A5u
#define APP_HEALTH_CHECK_INTERVAL_MS 5000u
#define APP_LINK_SETTLE_MS 1500u
#define APP_ARP_ANNOUNCE_INTERVAL_MS 500u
#define APP_ARP_ANNOUNCE_COUNT 3u
/* USER CODE END PD */
/* Private variables ---------------------------------------------------------*/
@@ -55,10 +51,6 @@ volatile uint8_t g_uart1_rx_probe_byte = 0u;
static uint8_t g_stack_guard_reported = 0u;
static uint8_t g_mux_response_frame[272];
static uint8_t g_links_started = 0u;
static uint8_t g_link_was_up = 0u;
static uint8_t g_arp_announces_sent = 0u;
static uint32_t g_link_up_tick = 0u;
static uint32_t g_last_arp_announce_tick = 0u;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
@@ -206,25 +198,10 @@ static void App_ConfigureLinks(const device_config_t *cfg)
static void App_StartLinksIfNeeded(void)
{
int any_failed;
uint32_t now;
if ((g_links_started != 0u) || !netif_is_link_up(&ch390_netif)) {
return;
}
now = HAL_GetTick();
if ((uint32_t)(now - g_link_up_tick) < APP_LINK_SETTLE_MS) {
return;
}
while (g_arp_announces_sent < APP_ARP_ANNOUNCE_COUNT) {
if ((g_arp_announces_sent != 0u) &&
((uint32_t)(now - g_last_arp_announce_tick) < APP_ARP_ANNOUNCE_INTERVAL_MS)) {
return;
}
(void)etharp_gratuitous(&ch390_netif);
g_arp_announces_sent++;
g_last_arp_announce_tick = now;
}
any_failed = 0;
for (uint8_t i = 0; i < TCP_SERVER_INSTANCE_COUNT; ++i) {
@@ -266,36 +243,6 @@ static void App_StopLinksIfNeeded(void)
g_links_started = 0u;
}
static void App_HandleLinkTransition(void)
{
uint8_t link_up = netif_is_link_up(&ch390_netif) ? 1u : 0u;
if (link_up == g_link_was_up) {
return;
}
g_link_was_up = link_up;
if (link_up != 0u) {
g_link_up_tick = HAL_GetTick();
g_arp_announces_sent = 0u;
g_last_arp_announce_tick = 0u;
etharp_cleanup_netif(&ch390_netif);
SEGGER_RTT_WriteString(0, "NET link up, settling before TCP start\r\n");
} else {
for (uint8_t i = 0; i < TCP_CLIENT_INSTANCE_COUNT; ++i) {
(void)tcp_client_disconnect(i);
}
for (uint8_t i = 0; i < TCP_SERVER_INSTANCE_COUNT; ++i) {
(void)tcp_server_stop(i);
}
etharp_cleanup_netif(&ch390_netif);
g_links_started = 0u;
g_arp_announces_sent = 0u;
g_last_arp_announce_tick = 0u;
SEGGER_RTT_WriteString(0, "NET link down, cleared TCP and ARP state\r\n");
}
}
static void App_Init(void)
{
const device_config_t *cfg;
@@ -701,13 +648,10 @@ static void App_Poll(void)
ethernetif_poll();
ethernetif_check_link();
sys_check_timeouts();
App_HandleLinkTransition();
App_StopLinksIfNeeded();
App_StartLinksIfNeeded();
tcp_server_poll();
if (g_links_started != 0u) {
tcp_client_poll();
}
tcp_client_poll();
uart_trans_poll();
StackGuard_Check();
config_poll();