On Sunday 14 September 2003 01:41 am, Nick Patavalis wrote: > this assumption, but I have also heard that "zero-copy" networking > was added to the kernel at some point. Zero-copy indicates that > data come directly for user-space and, hence, they might be > non-continuous. > You may want to take a look at e100_main.c in one of the latest 2.4.x kernels. There you should be able to see how to deal with dev->features and the flags NETIF_F_SG for scatter-gather capabilities and NETIF_F_*_CSUM for checksum offloading capabilities. Zero-copy was added in 2.4.4, and is a combination of the above. Also, take a look at skbuff.h for MAX_SKB_FRAGS and struct skb_shared_info and their use in the kernel code. -- | Shmulik Hen Advanced Network Services | | Israel Design Center, Jerusalem | | LAN Access Division, Platform Networking | | Intel Communications Group, Intel corp. | - : 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
