tcpip.c File Reference

Functions
void	tcp_timer_needed (void)
err_t	tcpip_input (struct pbuf *p, struct netif *inp)
err_t	tcpip_callback_with_block (void(*f)(void *ctx), void *ctx, u8_t block)
err_t	tcpip_apimsg (struct api_msg *apimsg)
err_t	tcpip_apimsg_lock (struct api_msg *apimsg)
err_t	tcpip_netifapi (struct netifapi_msg *netifapimsg)
err_t	tcpip_netifapi_lock (struct netifapi_msg *netifapimsg)
void	tcpip_init (void(*initfunc)(void *), void *arg)
Variables
sys_sem_t	lock_tcpip_core

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Detailed Description

Sequential API Main thread module

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Function Documentation

void tcp_timer_needed

(

void

)

Called from TCP_REG when registering a new PCB: the reason is to have the TCP timer only running when there are active (or time-wait) PCBs.

err_t tcpip_apimsg

(

struct api_msg *

apimsg

)

Call the lower part of a netconn_* function This function is then running in the thread context of tcpip_thread and has exclusive access to lwIP core code.

Parameters:

apimsg

a struct containing the function to call and its parameters

Returns:

ERR_OK if the function was called, another err_t if not

err_t tcpip_apimsg_lock

(

struct api_msg *

apimsg

)

Call the lower part of a netconn_* function This function has exclusive access to lwIP core code by locking it before the function is called.

Parameters:

apimsg

a struct containing the function to call and its parameters

Returns:

ERR_OK (only for compatibility fo tcpip_apimsg())

err_t tcpip_callback_with_block	(	void(*)(void *ctx)	f,
		void *	ctx,
		u8_t	block
	)

Call a specific function in the thread context of tcpip_thread for easy access synchronization. A function called in that way may access lwIP core code without fearing concurrent access.

Parameters:

	f	the function to call
	ctx	parameter passed to f
	block	1 to block until the request is posted, 0 to non-blocking mode

Returns:

ERR_OK if the function was called, another err_t if not

void tcpip_init	(	void(*)(void *)	initfunc,
		void *	arg
	)

Initialize this module:

• initialize all sub modules
• start the tcpip_thread

Parameters:

	initfunc	a function to call when tcpip_thread is running and finished initializing
	arg	argument to pass to initfunc

err_t tcpip_input	(	struct pbuf *	p,
		struct netif *	inp
	)

Pass a received packet to tcpip_thread for input processing

Parameters:

	p	the received packet, p->payload pointing to the Ethernet header or to an IP header (if netif doesn't got NETIF_FLAG_ETHARP flag)
	inp	the network interface on which the packet was received

err_t tcpip_netifapi

(

struct netifapi_msg *

netifapimsg

)

Much like tcpip_apimsg, but calls the lower part of a netifapi_* function.

Parameters:

netifapimsg

a struct containing the function to call and its parameters

Returns:

error code given back by the function that was called

err_t tcpip_netifapi_lock

(

struct netifapi_msg *

netifapimsg

)

Call the lower part of a netifapi_* function This function has exclusive access to lwIP core code by locking it before the function is called.

Parameters:

netifapimsg

a struct containing the function to call and its parameters

Returns:

ERR_OK (only for compatibility fo tcpip_netifapi())

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Variable Documentation

sys_sem_t lock_tcpip_core

The global semaphore to lock the stack.

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