From: Alexander Duyck <[email protected]> Date: Thu, 30 Apr 2015 14:53:42 -0700
> This series addresses a few minor issues I found in eth_type_trans that > that allow us to gain back something like 3 or more cycles per packet. > > The first change is to drop the byte swap since it isn't necessary. On x86 > we could just check the first byte and compare that against the upper 8 > bits of the Ethertype to determine if we are dealing with a size value or > not. > > The second makes it so that the value we read in to test for multicast can > be used for the address comparison. This allows us to avoid a second read > of the destination address. > > The final change is to avoid some unneeded instructions in computing the > Ethernet header pointer. When we start the call the Ethernet header is at > skb->data, so we just use that rather than computing mac_header, and then > adding that back to skb->head. Series applied, thanks Alex. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
