UIP Ошибка field 'p' has incomplete type Опции

[Alex_new]

Доброго времени суток.

Осваиваю Ethernet по стеку uIP. При использовании стандартного примера"Hello world" возникла ошибка "field 'p' has incomplete type".

Код

#ifndef __HELLO_WORLD_H__
#define __HELLO_WORLD_H__

/* Since this file will be included by uip.h, we cannot include uip.h
   here. But we might need to include uipopt.h if we need the u8_t and
   u16_t datatypes. */
#include "uip/uipopt.h"

#include "uip/psock.h"

/* Next, we define the uip_tcp_appstate_t datatype. This is the state
   of our application, and the memory required for this state is
   allocated together with each TCP connection. One application state
   for each TCP connection. */
typedef struct hello_world_state {
    struct psock p; [u]//ошибка тут[/u]
    char inputbuffer[10];
    char name[40];
} uip_tcp_appstate_t;

/* Finally we define the application function to be called by uIP. */
void hello_world_appcall(void);
#ifndef UIP_APPCALL
#define UIP_APPCALL hello_world_appcall
#endif /* UIP_APPCALL */

void hello_world_init(void);

#endif /* __HELLO_WORLD_H__ */

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