cant work ethernet on uClinux 2.6.x

Sorry, for my bad english. I have nios2 evaluation board with cyclone 1c12 with PHY ethernet module, and i use "nios2-linux-20090929". without "Ethernet (10 or 100Mbit) -> Opencores (Igor) Emac suppor" compilation is successful, but if i check it I has many error :

/home/vlad/uClinux/distro/nios2-linux/linux-2.6/drivers/net/open_eth.c: In function `oeth_open':

/home/vlad/uClinux/distro/nios2-linux/linux-2.6/drivers/net/open_eth.c:1575: error: `na_igor_mac_irq' undeclared (first use in this function)

/home/vlad/uClinux/distro/nios2-linux/linux-2.6/drivers/net/open_eth.c:1575: error: (Each undeclared identifier is reported only once

/home/vlad/uClinux/distro/nios2-linux/linux-2.6/drivers/net/open_eth.c:1575: error: for each function it appears in.)

/home/vlad/uClinux/distro/nios2-linux/linux-2.6/drivers/net/open_eth.c: In function `oeth_close':

/home/vlad/uClinux/distro/nios2-linux/linux-2.6/drivers/net/open_eth.c:1657: error: `na_igor_mac_irq' undeclared (first use in this function)

/home/vlad/uClinux/distro/nios2-linux/linux-2.6/drivers/net/open_eth.c: In function `oeth_probe':

/home/vlad/uClinux/distro/nios2-linux/linux-2.6/drivers/net/open_eth.c:2188: error: `na_igor_mac' undeclared (first use in this function)

Thanks.