How can I make the Linux network stack give large packets to a device driver. I'm implementing TSO support for a network driver and want the stack to give me large packets. What I do is to set the NETIF_F_TSO flag on my netdevice. But the stack does not really hand large packets to the driver. Packets are only 1620 bytes in size (instead of 1440 bytes w/o the TSO flag set). I read about tests with the e1000 driver where 64K packets were given to the driver and the hardware. Are there any network options I have to set in order to make the stack give me large packets? I'm using a simple TCP client-server test program which sends e.g. 20000 bytes packets. I already tried setting the socket option TCP_MAXSEG, but this does not work. Can anyone please give a hint on this? -- Regards, Thomas. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
