On Thu, May 17, 2001 at 01:49:43PM -0700, Shirley Ma wrote: > I did some test on Linux 2.4.4 kernel w/o hardware checksum turn on by > modified drivers/net/acenic.c file always let skb->ip_summed=CHECKSUM_NONE. > I found hardware checksum doesn't help TCP_STREAM throughput performance. Linux 2.4 does copy_checksum_to_user if possible if it hits a fast path (recvmsg currently waiting) With that checksumming comes for free. The hardware checksum will help though if the packet doesn't hit the user context fast path. -Andi - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org
