> Also, I wasn't able to find anything relating to transmit > checksum offloading under any condition in the e1000 driver > source code. Is it there somewhere, > but just hiding? See NETIF_F_HW_CSUM. This is where we advertise Tx checksum offload support. Also see e100_tx_csum(). This routine checks skb->ip_summed to see if we need to schedule the hardware to do the checksum calcs. -scott - : 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