Hello! > We can see skb_checksum() calls csum_partial() againt each page in skb. Good point... Dave, look, he says we will oops when sendfiling the last byte of a page, and will have to call skb_checksum(). Alexey - : 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