industrialNETworX

My cpu is netx500,My system is linux2.6.23 ,and uboot is u-boot.1.2.0,I want to use the two ethernet to send packet to each other,it means that----eth0 send packet to eth1,then eth1 send packet to eth0,I found that it only support one ethernet in uboot,so I add new eth1_send(),eth1_rx() function, they just the same to eth_send(),and eth_rx() in the netx_eth.c ,and I add 2 line in the function---- int eth_init(bd_t * bd)

 miiphy_wait_aneg(0x1d);
 miiphy_print_status(0x1d);

I want it to support the second phys of the ethernet,and it show two line :Link is up,100M Full.Howerver I can not receive packet when I send a ARP packet  from eth0 to eth1,It show  that PFIFO_REG( PFIFO_FILL_LEVEL(IND_FIFO_PORT_LO(1)))   is zero .means that there is no data received.

what is wrong ? thank you

Can the two ethernet hardware  work simultaneously？