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[lwip] add re-initial check.

This commit is contained in:
aozima 2018-07-02 10:02:16 +08:00
parent e49a29f2dc
commit 000fe93b9f
1 changed files with 9 additions and 1 deletions
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10
components/net/lwip-2.0.2/src/arch/sys_arch.c
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@ -136,11 +136,19 @@ static void tcpip_init_done_callback(void *arg)
* LwIP system initialization * LwIP system initialization
*/ */
extern int eth_system_device_init_private(void); extern int eth_system_device_init_private(void);
static volatile uint8_t init_ok = 0;
int lwip_system_init(void) int lwip_system_init(void)
{ {
rt_err_t rc; rt_err_t rc;
struct rt_semaphore done_sem; struct rt_semaphore done_sem;
if(init_ok)
{
rt_kprintf("lwip system already init.\n");
return 0;
}
init_ok = 1;
eth_system_device_init_private(); eth_system_device_init_private();
/* set default netif to NULL */ /* set default netif to NULL */