Hi There, In "nf_hook_slow()" (netfilter.c), if skb->ip_summed == CHECKSUM_HW and ouput interface is not NULL, TCP checksum is calculated by calling "skb_checksum_help()". Why is this needed? "nf_hook_slow" is called everytime a packet is sent out, if "Network packet filtering debugging" is chosen when compiling the kernel. Does this mean that there is no TCP checksum offload feature in this circumstance? Bluesea __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com - : 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
