Introduction

Ethernet Firmware also provides support to enable VEPA (Virtual Ethernet Port Aggregator) functionality in Jacinto devices with CPSW capable of multihost data flow. Multihost is a CPSW ALE feature that enables packets to be sent and received on host port, which is mandatory for VEPA.

The VEPA implementation allocates a secondary RX flow exclusively for broadcast and registered multicast packets to be routed to. This flow is in addition to the RX flows used by Ethernet Firmware to receive all other traffic (i.e. TCP/IP, gPTP).

Ethernet Firmware server registers multicast MAC addresses that need to be forwarded to remote clients. These multicast addresses are added to an internal VEPA table, which can be printed for debug purpose. An ALE policer entry is also added for each multicast address in the table so that when multicast packets arrive at any of the MAC ports configured in non MAC-only mode, they are routed to its dedicated flow, allocated at init time.

When a multicast packet whose MAC address is registered in the VEPA table, it will be passed to a VEPA specific handle function, which then calls EthFwVepa_sendRaw() to send a copy of the multicast packets to all relevant remote cores.

Data Structures
struct	EthFwVepa_Cfg
	Ethernet Firmware VEPA configuration. More...

Functions
uint32_t	EthFwVepa_setPacketDuplicationFlowIdx (uint32_t flowIdx)
	Sets packet duplication flow. More...

void	EthFwVepa_clearPacketDuplicationFlowIdx (void)
	Clear packet duplication flow. More...

int32_t	EthFwVepa_sendRaw (struct netif netif, struct pbuf pbuf, struct eth_addr ethSrcAddr, struct eth_addr ethDstAddr)
	Sends pbuf to all the required virtual switch ports after inserting their corresponding private VLAN. More...

Function Documentation

◆ EthFwVepa_setPacketDuplicationFlowIdx()

uint32_t EthFwVepa_setPacketDuplicationFlowIdx ( uint32_t flowIdx )

Sets packet duplication flow.

Parameters

flowIdx RX flow idx to be set

Returns: ETHFW_SOK if packet duplication flow was set successful, or a negative error code if failed.

◆ EthFwVepa_clearPacketDuplicationFlowIdx()

void EthFwVepa_clearPacketDuplicationFlowIdx ( void )

Clear packet duplication flow.

◆ EthFwVepa_sendRaw()

int32_t EthFwVepa_sendRaw	(	struct netif *	netif,
		struct pbuf *	pbuf,
		struct eth_addr *	ethSrcAddr,
		struct eth_addr *	ethDstAddr
	)

Sends pbuf to all the required virtual switch ports after inserting their corresponding private VLAN.