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diff --git a/docs/vACL/README.rst b/docs/vACL/README.rst index 547d33bc..f8c3e817 100644 --- a/docs/vACL/README.rst +++ b/docs/vACL/README.rst @@ -4,18 +4,19 @@ .. (c) opnfv, national center of scientific research "demokritos" and others. ======================================================== -Virtual ACL - vACL +vACL - Readme ======================================================== -1. Introduction -============== -This application implements Access Control List (ACL). ACL is typically +Introduction +================= +This application implements Access Control List (ACL). ACL is typically used for rule based policy enforcement. It restricts access to a destination -IP address/port based on various header fields, such as source IP address/port, +IP address/port based on various header fields, such as source IP address/port, destination IP address/port and protocol. It is built on top of DPDK and uses the packet framework infrastructure. +---------- About DPDK ---------- The DPDK IP Pipeline Framework provides a set of libraries to build a pipeline @@ -26,14 +27,14 @@ This document assumes the reader possesses the knowledge of DPDK concepts and packet framework. For more details, read DPDK Getting Started Guide, DPDK Programmers Guide, DPDK Sample Applications Guide. -2. Scope +Scope ========== This application provides a standalone DPDK based high performance vACL Virtual Network Function implementation. -3. Features +Features =========== -The vACL VNF currently supports the following functionality: +The vACL VNF currently supports the following functionality • CLI based Run-time rule configuration.(Add, Delete, List, Display, Clear, Modify) • Ipv4 and ipv6 standard 5 tuple packet Selector support. • Multithread support @@ -43,8 +44,8 @@ The vACL VNF currently supports the following functionality: • ARP (request, response, gratuitous) • ICMP (terminal echo, echo response, passthrough) • ICMPv6 and ND (Neighbor Discovery) - -4. High Level Design + +High Level Design ==================== The ACL Filter performs bulk filtering of incoming packets based on rules in current ruleset, discarding any packets not permitted by the rules. The mechanisms needed for building the @@ -58,85 +59,101 @@ The Input and Output FIFOs will be implemented using DPDK Ring Buffers. The DPDK ACL example: http://dpdk.org/doc/guides/sample_app_ug/l3_forward_access_ctrl.html #figure-ipv4-acl-rule contains a suitable syntax and parser for ACL rules. -=================== -5. Components of vACL -=================== -In vACL, each component is constructed using packet framework pipelines. +Components of vACL +======================= +In vACL, each component is constructed using packet framework pipelines. It includes Rx and Tx Driver, Master pipeline, load balancer pipeline and vACL worker pipeline components. A Pipeline framework is a collection of input ports, table(s),output ports and actions (functions). +--------------------------- Receive and Transmit Driver -****************************** +--------------------------- Packets will be received in bulk and provided to LoadBalancer(LB) thread. Transimit takes packets from worker threads in a dedicated ring and sent to hardware queue. +--------------------------- Master Pipeline -****************************** +--------------------------- The Master component is part of all the IP Pipeline applications. This component does not process any packets and should configure with Core 0, to allow other cores for processing of the traffic. This component is responsible for - 1. Initializing each component of the Pipeline application in different threads - 2. Providing CLI shell for the user control/debug - 3. Propagating the commands from user to the corresponding components +1. Initializing each component of the Pipeline application in different threads +2. Providing CLI shell for the user control/debug +3. Propagating the commands from user to the corresponding components +--------------------------- ARPICMP Pipeline -****************************** +--------------------------- This pipeline processes the APRICMP packets. +--------------------------- TXRX Pipelines -****************************** +--------------------------- The TXTX and RXRX pipelines are pass through pipelines to forward both ingress and egress traffic to Loadbalancer. This is required when the Software Loadbalancer is used. +--------------------------- Load Balancer Pipeline -****************************** -The vACL support both hardware and software balancing for load blalcning of +--------------------------- +The vACL support both hardware and software balancing for load blalcning of traffic across multiple VNF threads. The Hardware load balncing require support from hardware like Flow Director for steering of packets to application through -hardware queues. +hardware queues. The Software Load balancer is also supported if hardware loadbalancing can't be used for any reason. The TXRX along with LOADB pipeline provides support for software load balancing by distributing the flows to Multiple vACL worker threads. -Loadbalancer (HW or SW) distributes traffic based on the 5 tuple (src addr, src +Loadbalancer (HW or SW) distributes traffic based on the 5 tuple (src addr, src port, dest addr, dest port and protocol) applying an XOR logic distributing to active worker threads, thereby maintaining an affinity of flows to worker threads. +--------------------------- vACL Pipeline -****************************** +--------------------------- The vACL performs the rule-based packet filtering. -vACL Topology: +vACL Topology ------------------------ + :: + IXIA(Port 0)-->(Port 0)VNF(Port 1)-->(Port 1) IXIA operation: + Egress --> The packets sent out from ixia(port 0) will be sent through ACL to ixia(port 1). + Igress --> The packets sent out from ixia(port 1) will be sent through ACL to ixia(port 0). -vACL Topology (L4REPLAY): +vACL Topology (L4REPLAY) ------------------------------------ + :: + IXIA(Port 0)-->(Port 0)VNF(Port 1)-->(Port 0)L4REPLAY + operation: + Egress --> The packets sent out from ixia will pass through vACL to L3FWD/L4REPLAY. + Ingress --> The L4REPLAY upon reception of packets (Private to Public Network), - will immediately replay back the traffic to IXIA interface. (Pub -->Priv). + will immediately replay back the traffic to IXIA interface. (Pub -->Priv). -How to run L4Replay: +How to run L4Replay -------------------- +After the installation of samplevnf + :: - 1. After the installation of samplevnf: + go to <samplevnf/VNFs/L4Replay> - 2. ./buid/L4replay -c core_mask -n no_of_channels(let it be as 2) -- -p PORT_MASK --config="(port,queue,lcore)" + ./buid/L4replay -c core_mask -n no_of_channels(let it be as 2) -- -p PORT_MASK --config="(port,queue,lcore)" eg: ./L4replay -c 0xf -n 4 -- -p 0x3 --config="(0,0,1)" -6. Installation, Compile and Execution ------------------------------------------------------------------ +Installation, Compile and Execution +======================================= Plase refer to <samplevnf>/docs/vACL/INSTALL.rst for installation, configuration, compilation and execution. |