Any comments on this RFC patch set ?
> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Jijiang Liu
> Sent: Thursday, April 16, 2015 11:56 AM
> To: dev at dpdk.org; Gilmore, Walter E; Long, Thomas
> Subject: [dpdk-dev] [PATCH RFC 00/10] Add a VXLAN sample
>
> This VXLAN example simulates a VXLAN Tunnel endpoint(VTEP) termination in
> DPDK, which is used to demonstrate the offload and filtering capabilities of
> i40
> NIC for VXLAN packet.
>
> And this example uses the basic virtio devices management function from vHost
> example, and it uses us-Vhost interface and tunnel filtering mechanism to
> direct
> the traffic to/from a specific VM.
>
> In addition, this sample is also designed to show how tunneling protocols can
> be
> handled. For the vHost interface, we do not need to support zero copy/inter VM
> packet transfer etc. The approach that we take would be of benefit to you in
> that we put a pluggable structure in place so that the application could be
> easily
> extended to support a new tunneling protocol.
>
> The software framework is as follows:
>
> |-------------------| |-------------------|
> | VM-1(VNI:100) | | VM-2(VNI:200) |
> | |------| |------| | | |------| |------| |
> | |vport0| |vport1| | | |vport0| |vport1| |
> |-|------|-|------|-| |-|------|-|------|-| Guests
> \ /
> |-------------\-------/--------|
> | us-vHost interface |
> | |-|----|--| |
> | decap| | TEP| | encap | DPDK App
> | |-|----|--| |
> | | | |
> |------------|----|------------|
> | |
> |-------------|----|---------------|
> |tunnel filter| | IP/L4 Tx csum |
> |IP/L4 csum | | TSO |
> |packet type | | | NIC
> |CRC strip | | |
> |-------------|----|---------------|
> | |
> | |
> | |
> /-------\
> VXLAN Tunnel
>
> The sample will support the followings:
> 1> Tunneling packet recognition.
>
> 2> The port of UDP tunneling is configurable
>
> 3> Directing of incoming traffic to the correct queue based on the tunnel
> filter
> type such as inner MAC address and VNI.
> The VNI will be assigned from a static internal table based on the us-
> vhost device ID. Each device will receive a unique device ID. The inner MAC
> will
> be learned from the first packet transmitted from a device.
>
> 4> Decapsulation of Rx VXLAN traffic. This is a software only
> 4> operation(will use HW header split instead later)
>
> 5> Encapsulation of Tx VXLAN traffic. This is a software only operation
>
> 6> Tx outer IP, inner IP and L4 checksum offload
>
> 7> TSO support for tunneling packet
>
> Limitations:
> 1. No ARP support
> 2. There are some duplicated source codes because of using the basic virtio
> device management function from vhost sample, but consider that current vhost
> sample is quite complicated and huge enough, and I think we shall have a
> separate sample for tunneling packet processing.
> 3. Currently, only the i40e NIC is supported in the sample, but other types of
> NICs also can be supported later if those NICs are able to support tunneling
> packet filter.
>
>
> Jijiang Liu (10):
> create VXLAN sample framework using virtio device management function
> add basic VXLAN structures
> add VXLAN operation APIs
> support overlay operations
> Add encapsulation and decapsulation function
> add udp port configuration
> add filter type configuration
> add tx checksum offload configuration
> add TSO offload configuration
> add encapsulation and decapsulation flags
>
> examples/Makefile | 1 +
> examples/tep_termination/Makefile | 58 ++
> examples/tep_termination/main.c | 1117
> ++++++++++++++++++++++++++++++++
> examples/tep_termination/main.h | 113 ++++
> examples/tep_termination/vxlan.c | 242 +++++++
> examples/tep_termination/vxlan.h | 81 +++
> examples/tep_termination/vxlan_setup.c | 453 +++++++++++++
> examples/tep_termination/vxlan_setup.h | 76 +++
> 8 files changed, 2141 insertions(+), 0 deletions(-) create mode 100644
> examples/tep_termination/Makefile create mode 100644
> examples/tep_termination/main.c create mode 100644
> examples/tep_termination/main.h create mode 100644
> examples/tep_termination/vxlan.c create mode 100644
> examples/tep_termination/vxlan.h create mode 100644
> examples/tep_termination/vxlan_setup.c
> create mode 100644 examples/tep_termination/vxlan_setup.h
>
> --
> 1.7.7.6
