From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 8DE6DA0C4B; Sat, 14 Aug 2021 01:52:54 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 2DDF341277; Sat, 14 Aug 2021 01:52:42 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by mails.dpdk.org (Postfix) with ESMTP id 4458740DDE for ; Sat, 14 Aug 2021 01:52:39 +0200 (CEST) X-IronPort-AV: E=McAfee;i="6200,9189,10075"; a="213796357" X-IronPort-AV: E=Sophos;i="5.84,320,1620716400"; d="scan'208";a="213796357" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Aug 2021 16:52:37 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,320,1620716400"; d="scan'208";a="674639249" Received: from silpixa00400573.ir.intel.com (HELO silpixa00400573.ger.corp.intel.com) ([10.237.223.107]) by fmsmga006.fm.intel.com with ESMTP; 13 Aug 2021 16:52:36 -0700 From: Cristian Dumitrescu To: dev@dpdk.org Date: Sat, 14 Aug 2021 00:52:32 +0100 Message-Id: <20210813235232.65757-4-cristian.dumitrescu@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210813235232.65757-1-cristian.dumitrescu@intel.com> References: <20210813235232.65757-1-cristian.dumitrescu@intel.com> Subject: [dpdk-dev] [PATCH 4/4] examples/pipeline: add learner table example X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Added the files to illustrate the learner table usage. Signed-off-by: Cristian Dumitrescu --- examples/pipeline/examples/learner.cli | 35 ++++++++ examples/pipeline/examples/learner.spec | 109 ++++++++++++++++++++++++ 2 files changed, 144 insertions(+) create mode 100644 examples/pipeline/examples/learner.cli create mode 100644 examples/pipeline/examples/learner.spec diff --git a/examples/pipeline/examples/learner.cli b/examples/pipeline/examples/learner.cli new file mode 100644 index 0000000000..732b6cb85f --- /dev/null +++ b/examples/pipeline/examples/learner.cli @@ -0,0 +1,35 @@ +; SPDX-License-Identifier: BSD-3-Clause +; Copyright(c) 2020 Intel Corporation + +; +; Customize the LINK parameters to match your setup. +; +mempool MEMPOOL0 buffer 2304 pool 32K cache 256 cpu 0 + +link LINK0 dev 0000:18:00.0 rxq 1 128 MEMPOOL0 txq 1 512 promiscuous on +link LINK1 dev 0000:18:00.1 rxq 1 128 MEMPOOL0 txq 1 512 promiscuous on +link LINK2 dev 0000:3b:00.0 rxq 1 128 MEMPOOL0 txq 1 512 promiscuous on +link LINK3 dev 0000:3b:00.1 rxq 1 128 MEMPOOL0 txq 1 512 promiscuous on + +; +; PIPELINE0 setup. +; +pipeline PIPELINE0 create 0 + +pipeline PIPELINE0 port in 0 link LINK0 rxq 0 bsz 32 +pipeline PIPELINE0 port in 1 link LINK1 rxq 0 bsz 32 +pipeline PIPELINE0 port in 2 link LINK2 rxq 0 bsz 32 +pipeline PIPELINE0 port in 3 link LINK3 rxq 0 bsz 32 + +pipeline PIPELINE0 port out 0 link LINK0 txq 0 bsz 32 +pipeline PIPELINE0 port out 1 link LINK1 txq 0 bsz 32 +pipeline PIPELINE0 port out 2 link LINK2 txq 0 bsz 32 +pipeline PIPELINE0 port out 3 link LINK3 txq 0 bsz 32 +pipeline PIPELINE0 port out 4 sink none + +pipeline PIPELINE0 build ./examples/pipeline/examples/learner.spec + +; +; Pipelines-to-threads mapping. +; +thread 1 pipeline PIPELINE0 enable diff --git a/examples/pipeline/examples/learner.spec b/examples/pipeline/examples/learner.spec new file mode 100644 index 0000000000..0fa56295a6 --- /dev/null +++ b/examples/pipeline/examples/learner.spec @@ -0,0 +1,109 @@ +; SPDX-License-Identifier: BSD-3-Clause +; Copyright(c) 2020 Intel Corporation + +// +// Headers +// +struct ethernet_h { + bit<48> dst_addr + bit<48> src_addr + bit<16> ethertype +} + +struct ipv4_h { + bit<8> ver_ihl + bit<8> diffserv + bit<16> total_len + bit<16> identification + bit<16> flags_offset + bit<8> ttl + bit<8> protocol + bit<16> hdr_checksum + bit<32> src_addr + bit<32> dst_addr +} + +header ethernet instanceof ethernet_h +header ipv4 instanceof ipv4_h + +// +// Meta-data +// +struct metadata_t { + bit<32> port_in + bit<32> port_out + + // Arguments for the "fwd_action" action. + bit<32> fwd_action_arg_port_out +} + +metadata instanceof metadata_t + +// +// Registers. +// +regarray counter size 1 initval 0 + +// +// Actions +// +struct fwd_action_args_t { + bit<32> port_out +} + +action fwd_action args instanceof fwd_action_args_t { + mov m.port_out t.port_out + return +} + +action learn_action args none { + // Read current counter value into m.fwd_action_arg_port_out. + regrd m.fwd_action_arg_port_out counter 0 + + // Increment the counter. + regadd counter 0 1 + + // Limit the values of m.fwd_action_arg_port_out to 0 .. 3. + and m.fwd_action_arg_port_out 3 + + // Add the current lookup key to the table. The associated action is fwd_action, with the + // action parameters read from the packet meta-data starting with the + // m.fwd_action_arg_port_out field. + learn fwd_action + + // Send the current packet to the same output port. + mov m.port_out m.fwd_action_arg_port_out + + return +} + +// +// Tables. +// +learner fwd_table { + key { + h.ipv4.dst_addr + } + + actions { + fwd_action args m.fwd_action_arg_port_out + learn_action args none + } + + default_action learn_action args none + size 1048576 + timeout 120 +} + +// +// Pipeline. +// +apply { + rx m.port_in + extract h.ethernet + extract h.ipv4 + table fwd_table + emit h.ethernet + emit h.ipv4 + tx m.port_out +} -- 2.17.1