Collaboration diagram for FDB example code:

Functions
void	bridgeif_fdb_update_src (void fdb_ptr, struct eth_addr src_addr, u8_t port_idx)

bridgeif_portmask_t	bridgeif_fdb_get_dst_ports (void fdb_ptr, struct eth_addr dst_addr)

static void	bridgeif_fdb_age_one_second (void *fdb_ptr)

void *	bridgeif_fdb_init (u16_t max_fdb_entries)

Detailed Description

This file implements an example for an FDB (Forwarding DataBase)

Function Documentation

◆ bridgeif_fdb_age_one_second()

static void bridgeif_fdb_age_one_second ( void * fdb_ptr )

static

Aging implementation of our simple fdb

References BRIDGEIF_DECL_PROTECT, BRIDGEIF_READ_PROTECT, BRIDGEIF_READ_UNPROTECT, BRIDGEIF_WRITE_PROTECT, BRIDGEIF_WRITE_UNPROTECT, bridgeif_dfdb_s::fdb, bridgeif_dfdb_s::max_fdb_entries, bridgeif_dfdb_entry_s::ts, and bridgeif_dfdb_entry_s::used.

Referenced by bridgeif_age_tmr().

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◆ bridgeif_fdb_get_dst_ports()

bridgeif_portmask_t bridgeif_fdb_get_dst_ports	(	void *	fdb_ptr,
		struct eth_addr *	dst_addr
	)

Walk our list of auto-learnt fdb entries and return a port to forward or BR_FLOOD if unknown

References bridgeif_dfdb_entry_s::addr, BR_FLOOD, BRIDGEIF_DECL_PROTECT, BRIDGEIF_READ_PROTECT, BRIDGEIF_READ_UNPROTECT, bridgeif_dfdb_s::fdb, bridgeif_dfdb_s::max_fdb_entries, bridgeif_dfdb_entry_s::port, bridgeif_dfdb_entry_s::ts, and bridgeif_dfdb_entry_s::used.

◆ bridgeif_fdb_init()

void* bridgeif_fdb_init ( u16_t max_fdb_entries )

Init our simple fdb list

References BRIDGEIF_AGE_TIMER_MS, bridgeif_age_tmr(), BRIDGEIF_DEBUG, bridgeif_dfdb_s::fdb, LWIP_ASSERT, LWIP_DEBUGF, bridgeif_dfdb_s::max_fdb_entries, mem_calloc(), and NULL.

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◆ bridgeif_fdb_update_src()

void bridgeif_fdb_update_src	(	void *	fdb_ptr,
		struct eth_addr *	src_addr,
		u8_t	port_idx
	)

A real simple and slow implementation of an auto-learning forwarding database that remembers known src mac addresses to know which port to send frames destined for that mac address.

ATTENTION: This is meant as an example only, in real-world use, you should provide a better implementation :-)