On 17-01-31 11:39 AM, tndave wrote: > > > On 01/27/2017 01:33 PM, John Fastabend wrote: >> This is an experimental implementation of rx zero copy for af_packet. >> Its a bit rough and likely has errors but the plan is to clean it up >> over the next few months. >> >> And seeing I said I would post it in another thread a few days back >> here it is. > > This sounds good (believe me I have been thinking along the lines :) > From driver Rx side, we always premap RX buffers so best to map them to > shmem for PF_PACKET sockets. > Also, I like the idea that user can put selected queue (may be queues in > future?) to PF_PACKET mode keeping rest of the queues as it is. > Zero copy and removing skb setup & processing overhead on RX certainly > makes things faster and help latency. Zero copy is good on Tx however > without skb should we figure out how to use segmentation and checksum > offloading > features of HW. Can this be considered in tpacket V4 hdr! >
Yes, I'll try to create another RFC in a week or two. Thanks. > -Tushar
