Re: [Qemu-devel] [Qemu-discuss] GRO not happening in VM with VxLAN

2015-07-01 Thread Santosh R
I am using 3.18 kernel. #uname -a Linux Indra.asicdesigners.com 3.18.0 #11 SMP Wed Jul 1 21:49:44 IST 2015 x86_64 x86_64 x86_64 GNU/Linux #cat /etc/issue Red Hat Enterprise Linux Server release 6.5 (Santiago) Kernel \r on an \m As mentioned in my initial post, this is how I am starting the VM. Ho

Re: [Qemu-devel] [Qemu-discuss] GRO not happening in VM with VxLAN

2015-07-01 Thread Vlad Yasevich
On 07/01/2015 02:50 PM, Santosh R wrote: > Since the vxlan UDP header checksum is 0, udp_tunnel_gro_complete (called > via vxlan_gro_complete) is setting SKB_GSO_UDP_TUNNEL in > skb_shinfo(skb)->gso_type. > Later when bridge interface tries to forward this packet to tap interface > (br_dev_queue_pu

Re: [Qemu-devel] [Qemu-discuss] GRO not happening in VM with VxLAN

2015-07-01 Thread Santosh R
Since the vxlan UDP header checksum is 0, udp_tunnel_gro_complete (called via vxlan_gro_complete) is setting SKB_GSO_UDP_TUNNEL in skb_shinfo(skb)->gso_type. Later when bridge interface tries to forward this packet to tap interface (br_dev_queue_push_xmit -> __dev_queue_xmit -> validate_xmit_skb) n

Re: [Qemu-devel] [Qemu-discuss] GRO not happening in VM with VxLAN

2015-06-29 Thread Santosh R
On Mon, Jun 29, 2015 at 9:24 PM, Santosh R wrote: > > On Mon, Jun 29, 2015 at 9:04 PM, Vlad Yasevich > wrote: > >> On 06/29/2015 01:46 AM, Santosh R wrote: >> > All, >> > >> >I am testing VxLAN performance in VM. For this I am using below >> command >> > to bring up the VM. >> > # qemu-syste

Re: [Qemu-devel] [Qemu-discuss] GRO not happening in VM with VxLAN

2015-06-29 Thread Santosh R
On Mon, Jun 29, 2015 at 9:04 PM, Vlad Yasevich wrote: > On 06/29/2015 01:46 AM, Santosh R wrote: > > All, > > > >I am testing VxLAN performance in VM. For this I am using below > command > > to bring up the VM. > > # qemu-system-x86_64 -m 4096 -smp 4 -boot c -device > > virtio-net-pci,netdev=

Re: [Qemu-devel] [Qemu-discuss] GRO not happening in VM with VxLAN

2015-06-29 Thread Vlad Yasevich
On 06/29/2015 01:46 AM, Santosh R wrote: > All, > >I am testing VxLAN performance in VM. For this I am using below command > to bring up the VM. > # qemu-system-x86_64 -m 4096 -smp 4 -boot c -device > virtio-net-pci,netdev=tap0,mac=00:11:22:33:44:55 -netdev > tap,id=tap0,script=no,vhost=on -d