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/**
* @file
* TCPIP API internal implementations (do not use in application code)
*/
/*
* 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>
*
*/
#ifndef LWIP_HDR_TCPIP_PRIV_H
#define LWIP_HDR_TCPIP_PRIV_H
#include "lwip/opt.h"
#if !NO_SYS /* don't build if not configured for use in lwipopts.h */
#include "lwip/tcpip.h"
#include "lwip/sys.h"
#include "lwip/timeouts.h"
#ifdef __cplusplus
extern "C" {
#endif
struct pbuf;
struct netif;
#if LWIP_MPU_COMPATIBLE
#define API_VAR_REF(name) (*(name))
#define API_VAR_DECLARE(type, name) type * name
#define API_VAR_ALLOC_EXT(type, pool, name, errorblock) do { \
name = (type *)memp_malloc(pool); \
if (name == NULL) { \
errorblock; \
} \
} while(0)
#define API_VAR_ALLOC(type, pool, name, errorval) API_VAR_ALLOC_EXT(type, pool, name, return errorval)
#define API_VAR_ALLOC_POOL(type, pool, name, errorval) do { \
name = (type *)LWIP_MEMPOOL_ALLOC(pool); \
if (name == NULL) { \
return errorval; \
} \
} while(0)
#define API_VAR_FREE(pool, name) memp_free(pool, name)
#define API_VAR_FREE_POOL(pool, name) LWIP_MEMPOOL_FREE(pool, name)
#define API_EXPR_REF(expr) (&(expr))
#if LWIP_NETCONN_SEM_PER_THREAD
#define API_EXPR_REF_SEM(expr) (expr)
#else
#define API_EXPR_REF_SEM(expr) API_EXPR_REF(expr)
#endif
#define API_EXPR_DEREF(expr) expr
#define API_MSG_M_DEF(m) m
#define API_MSG_M_DEF_C(t, m) t m
#else /* LWIP_MPU_COMPATIBLE */
#define API_VAR_REF(name) name
#define API_VAR_DECLARE(type, name) type name
#define API_VAR_ALLOC_EXT(type, pool, name, errorblock)
#define API_VAR_ALLOC(type, pool, name, errorval)
#define API_VAR_ALLOC_POOL(type, pool, name, errorval)
#define API_VAR_FREE(pool, name)
#define API_VAR_FREE_POOL(pool, name)
#define API_EXPR_REF(expr) expr
#define API_EXPR_REF_SEM(expr) API_EXPR_REF(expr)
#define API_EXPR_DEREF(expr) (*(expr))
#define API_MSG_M_DEF(m) *m
#define API_MSG_M_DEF_C(t, m) const t * m
#endif /* LWIP_MPU_COMPATIBLE */
err_t tcpip_send_msg_wait_sem(tcpip_callback_fn fn, void *apimsg, sys_sem_t* sem);
struct tcpip_api_call_data
{
#if !LWIP_TCPIP_CORE_LOCKING
err_t err;
#if !LWIP_NETCONN_SEM_PER_THREAD
sys_sem_t sem;
#endif /* LWIP_NETCONN_SEM_PER_THREAD */
#else /* !LWIP_TCPIP_CORE_LOCKING */
u8_t dummy; /* avoid empty struct :-( */
#endif /* !LWIP_TCPIP_CORE_LOCKING */
};
typedef err_t (*tcpip_api_call_fn)(struct tcpip_api_call_data* call);
err_t tcpip_api_call(tcpip_api_call_fn fn, struct tcpip_api_call_data *call);
enum tcpip_msg_type {
TCPIP_MSG_API,
TCPIP_MSG_API_CALL,
TCPIP_MSG_INPKT,
#if LWIP_TCPIP_TIMEOUT && LWIP_TIMERS
TCPIP_MSG_TIMEOUT,
TCPIP_MSG_UNTIMEOUT,
#endif /* LWIP_TCPIP_TIMEOUT && LWIP_TIMERS */
TCPIP_MSG_CALLBACK,
TCPIP_MSG_CALLBACK_STATIC
};
struct tcpip_msg {
enum tcpip_msg_type type;
union {
struct {
tcpip_callback_fn function;
void* msg;
} api_msg;
struct {
tcpip_api_call_fn function;
struct tcpip_api_call_data *arg;
sys_sem_t *sem;
} api_call;
struct {
struct pbuf *p;
struct netif *netif;
netif_input_fn input_fn;
} inp;
struct {
tcpip_callback_fn function;
void *ctx;
} cb;
#if LWIP_TCPIP_TIMEOUT && LWIP_TIMERS
struct {
u32_t msecs;
sys_timeout_handler h;
void *arg;
} tmo;
#endif /* LWIP_TCPIP_TIMEOUT && LWIP_TIMERS */
} msg;
};
#ifdef __cplusplus
}
#endif
#endif /* !NO_SYS */
#endif /* LWIP_HDR_TCPIP_PRIV_H */