net_iface.h File Reference

This is the header file for the net_iface functions, which sit between the MityDSP network drivers and the lwIP stack. More...

#include <std.h>
#include <buf.h>
#include <lck.h>
#include <mbx.h>
#include "lwip/opt.h"
#include "lwip/def.h"
#include "lwip/mem.h"
#include "lwip/pbuf.h"
#include "lwip/sys.h"
#include "lwip/stats.h"
#include "netif/etharp.h"

Classes
struct	Eth_Hdr802_1q
struct	tsNetIface

Macros
#define	IEEE802_1Q_TPID   0x0081
#define	SUPPORT_VLAN_TAGGING   1

Functions
err_t	net_iface_init (struct netif *netif)
void	net_iface_set_defaults (tsNetIface *apNetIface, tcNetDrvr *apNetDrvr)
void	net_iface_copy_pbuff (tsNetIface *apNetIfaceDst, tsNetIface *apNetIfaceSrc)
void	net_iface_rx_cb (void *apBuffer, int anLen, void *apUser, bool abInIsr)
void *	net_iface_buf_alloc (int anLen, void *apUser)

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Detailed Description

This is the header file for the net_iface functions, which sit between the MityDSP network drivers and the lwIP stack.

o 0 | / Copyright (c) 2005-2007 (CL)—o Critical Link, LLC \ O

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Macro Definition Documentation

#define IEEE802_1Q_TPID   0x0081

#define SUPPORT_VLAN_TAGGING   1

---

Function Documentation

err_t net_iface_init

(

struct netif *

apNetif

)

This function should be registered as the lwIP network interface (netif) initialization function. When activated, it sets up the interface, starts the receiver thread, and initializes the network hardware.

Parameters:

[in]

apNetif

Pointer to the netif structure for the interface being initialized.

Returns:

Zero upon success, -1 for failure

void net_iface_set_defaults	(	tsNetIface *	apNetIface,
		tcNetDrvr *	apNetDrvr
	)

This function provides defaults for the tsNetIface structure.

Parameters:

[in]	apNetIface	Pointer to the tsNetIface structure to set to default values.
[in]	apNetDrvr	Pointer to the network driver to associate with the provided tsNetIface.

Returns:

None.

void net_iface_copy_pbuff	(	tsNetIface *	apNetIfaceDst,
		tsNetIface *	apNetIfaceSrc
	)

void net_iface_rx_cb	(	void *	apBuffer,
		int	anLen,
		void *	apUser,
		bool	abInIsr
	)

This function is registered as the receive packet callback for the network driver by the "open" call in net_iface_init. When activated, it posts the pointer to the received data to the net_iface_rx_thread.

Parameters:

[in]	apBuffer	Pointer to the received packet.
[in]	anLen	The length of the received packet.
[in]	apUser	Pointer to the netif structure.
[in]	abInIsr	True if called from ISR (not used).

Returns:

None.

void* net_iface_buf_alloc	(	int	anLen,
		void *	apUser
	)

This function is registered as the buffer allocation callback for the network driver by the "open" call in net_iface_init. When activated, it provides a valid location where the next packet is to be written.

Note:

The pbuf size must be set greater or equal to the max packet size in lwipopts.h.

Parameters:

[in]	anLen	The length of the buffer to allocate.
[in]	apUser	Pointer to the netif structure.

Returns:

Payload area of an allocated pbuf.