when i Tried to ping from board to host (ie ping 192.168.10.1) through eth0 its pinging. but when i tried to ping from other ports ie eth1, eth2 & eth3 its not pinging and prints "destination host not reachable". Also I tried to ping from pc(ie host) to board same result was printing.

Then I started debugging, I put a printk function inside Gianfar.c file and gfar_clean_rx_ring() for printing packet sequence and packet size. I started pinging each port from pc (ie host) and its printing on each reception as:
For eth0
[   94.966113] Packet 1 size 60
[   95.965588] Packet 2 size 120
[   97.980729] Packet 3 size 180
[   98.980705] Packet 4 size 240
[   99.998872] Packet 5 size 300

and same for other interfaces too.

Here is the device tree snap-shot for ethernet which I am using with this kernel (hope may be helpful):

enet0: ethernet@24000 {
                        #address-cells = <1>;
                        #size-cells = <1>;
                        cell-index = <0>;
                        device_type = "network";
                        model = "TSEC";
                        compatible = "gianfar";
                        reg = <0x24000 0x1000>;
                        ranges = <0x0 0x24000 0x1000>;
                        local-mac-address = [ 00 00 00 00 00 00 ];
                        interrupts = <29 2 30  2 34 2>;
                        interrupt-parent = <&mpic>;
                        tbi-handle = <&tbi0>;
                        phy-handle = <&phy0>;
                        phy-connection-type = "rgmii-id";

                        mdio@520 {
                                #address-cells = <1>;
                                #size-cells = <0>;
                                compatible = "fsl,gianfar-mdio";
                                reg = <0x520 0x20>;

                                phy0: ethernet-phy@0 {
                                        interrupt-parent = <&mpic>;
                                        interrupts = <0 1>;
                                        reg = <0>;
                                        device_type = "ethernet-phy";
                                };
                                phy1: ethernet-phy@1 {
                                        interrupt-parent = <&mpic>;
                                        interrupts = <1 1>;
                                        reg = <1>;
                                        device_type = "ethernet-phy";
                                };
                                phy2: ethernet-phy@2 {
                                        interrupt-parent = <&mpic>;
                                        interrupts = <2 1>;
                                        reg = <2>;
                                        device_type = "ethernet-phy";
                                };
                                phy3: ethernet-phy@3 {
                                        interrupt-parent = <&mpic>;
                                        interrupts = <3 1>;
                                        reg = <3>;
                                        device_type = "ethernet-phy";
                                };
                                tbi0: tbi-phy@11 {
                                        reg = <0x11>;
                                        device_type = "tbi-phy";
                                };
                        };
                };
                enet1: ethernet@25000 {
                        #address-cells = <1>;
                        #size-cells = <1>;
                        cell-index = <1>;
                        device_type = "network";
                        model = "TSEC";
                        compatible = "gianfar";
                        reg = <0x25000 0x1000>;
                        ranges = <0x0 0x25000 0x1000>;
                        local-mac-address = [ 00 00 00 00 00 00 ];
                        interrupts = <35 2 36 2 40 2>;
                        interrupt-parent = <&mpic>;
                        tbi-handle = <&tbi1>;
                        phy-handle = <&phy1>;
                        phy-connection-type = "rgmii-id";

                        mdio@520 {
                                #address-cells = <1>;
                                #size-cells = <0>;
                                compatible = "fsl,gianfar-tbi";
                                reg = <0x520 0x20>;

                                tbi1: tbi-phy@11 {
                                        reg = <0x11>;
                                        device_type = "tbi-phy";
                                };
                        };
                };


Is this happening because of phy interrupt or something else?  Please through some light on this. how to make it working? how to disable phy interrupt? Does phy interrupt matters for gianfar interrupt or polling mode?

Please give some pointer/anything to help more understanding of ethernet driver.

Thanks And Regards

A$hi$h