From patchwork Mon Mar 15 11:34:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Walsh X-Patchwork-Id: 89119 X-Patchwork-Delegate: david.marchand@redhat.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 441FAA054F; Mon, 15 Mar 2021 12:34:53 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id E4EF224263C; Mon, 15 Mar 2021 12:34:50 +0100 (CET) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by mails.dpdk.org (Postfix) with ESMTP id 7AE1024263A for ; Mon, 15 Mar 2021 12:34:49 +0100 (CET) IronPort-SDR: cH08nHYPvqBNnFOE4tgBIrO2+PBY+KZaLx8AHhovXVRQmZKUELFu1TxReh6ZVa9TvKFJvuoni0 n+ryxQZkr1dA== X-IronPort-AV: E=McAfee;i="6000,8403,9923"; a="188432266" X-IronPort-AV: E=Sophos;i="5.81,249,1610438400"; d="scan'208";a="188432266" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Mar 2021 04:34:49 -0700 IronPort-SDR: ZIRe5jVaeeG47F94BN9Z1DefQabHQuXxZ2Yts82WYCQYAy5EJw6j6KqNu9/4mgYpibeAI8YSHi u6I+KKaezEUA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,249,1610438400"; d="scan'208";a="439728803" Received: from silpixa00400466.ir.intel.com ([10.237.213.210]) by FMSMGA003.fm.intel.com with ESMTP; 15 Mar 2021 04:34:44 -0700 From: Conor Walsh To: jerinj@marvell.com, stephen@networkplumber.org, bernard.iremonger@intel.com, konstantin.ananyev@intel.com, vladimir.medvedkin@intel.com, anatoly.burakov@intel.com Cc: dev@dpdk.org, Conor Walsh Date: Mon, 15 Mar 2021 11:34:35 +0000 Message-Id: <20210315113439.1045223-2-conor.walsh@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210315113439.1045223-1-conor.walsh@intel.com> References: <20210311120153.186213-1-conor.walsh@intel.com> <20210315113439.1045223-1-conor.walsh@intel.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH v5 1/5] examples/l3fwd: fix LPM IPv6 subnets 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" The IPv6 subnets used were not within the 2001:200::/48 subnet Changed to 2001:200:0:{0-7}::/64 where 0-7 is the port ID Fixes: 37afe381bde4 ("examples/l3fwd: use reserved IP addresses") Signed-off-by: Conor Walsh Acked-by: Vladimir Medvedkin --- examples/l3fwd/l3fwd_lpm.c | 26 ++++++++++++++++---------- 1 file changed, 16 insertions(+), 10 deletions(-) diff --git a/examples/l3fwd/l3fwd_lpm.c b/examples/l3fwd/l3fwd_lpm.c index 3dcf1fef18..1cfaf36572 100644 --- a/examples/l3fwd/l3fwd_lpm.c +++ b/examples/l3fwd/l3fwd_lpm.c @@ -42,7 +42,10 @@ struct ipv6_l3fwd_lpm_route { uint8_t if_out; }; -/* 198.18.0.0/16 are set aside for RFC2544 benchmarking (RFC5735). */ +/* + * 198.18.0.0/16 are set aside for RFC2544 benchmarking (RFC5735). + * 198.18.{0-7}.0/24 = Port {0-7} + */ static const struct ipv4_l3fwd_lpm_route ipv4_l3fwd_lpm_route_array[] = { {RTE_IPV4(198, 18, 0, 0), 24, 0}, {RTE_IPV4(198, 18, 1, 0), 24, 1}, @@ -54,16 +57,19 @@ static const struct ipv4_l3fwd_lpm_route ipv4_l3fwd_lpm_route_array[] = { {RTE_IPV4(198, 18, 7, 0), 24, 7}, }; -/* 2001:0200::/48 is IANA reserved range for IPv6 benchmarking (RFC5180) */ +/* + * 2001:200::/48 is IANA reserved range for IPv6 benchmarking (RFC5180). + * 2001:200:0:{0-7}::/64 = Port {0-7} + */ static const struct ipv6_l3fwd_lpm_route ipv6_l3fwd_lpm_route_array[] = { - {{32, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, 48, 0}, - {{32, 1, 2, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0}, 48, 1}, - {{32, 1, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0}, 48, 2}, - {{32, 1, 2, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0}, 48, 3}, - {{32, 1, 2, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0}, 48, 4}, - {{32, 1, 2, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0}, 48, 5}, - {{32, 1, 2, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0}, 48, 6}, - {{32, 1, 2, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0}, 48, 7}, + {{32, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 0}, + {{32, 1, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 1}, + {{32, 1, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 2}, + {{32, 1, 2, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 3}, + {{32, 1, 2, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 4}, + {{32, 1, 2, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 5}, + {{32, 1, 2, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 6}, + {{32, 1, 2, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 7}, }; #define IPV4_L3FWD_LPM_MAX_RULES 1024 From patchwork Mon Mar 15 11:34:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Walsh X-Patchwork-Id: 89120 X-Patchwork-Delegate: david.marchand@redhat.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 09B18A054F; Mon, 15 Mar 2021 12:35:00 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 3A87F242643; Mon, 15 Mar 2021 12:34:53 +0100 (CET) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by mails.dpdk.org (Postfix) with ESMTP id 88BD324263F for ; Mon, 15 Mar 2021 12:34:51 +0100 (CET) IronPort-SDR: wTCpktQTW1DKZaLVwX3uV/ZzoX17+iAc7/S5gaEqlfefABGSCCh32N2o6JlpNK2RbN8o9DYmRK FUFae8UrmYWw== X-IronPort-AV: E=McAfee;i="6000,8403,9923"; a="188432268" X-IronPort-AV: E=Sophos;i="5.81,249,1610438400"; d="scan'208";a="188432268" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Mar 2021 04:34:51 -0700 IronPort-SDR: yli8Z2KccxnL3oksDGV5AjIyzXY4OawRq/1QPg/eQXFlpC5nCbMEbnNPYMpXUz23Qo0zDhLslN SYZ9ZQ+BX20Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,249,1610438400"; d="scan'208";a="439728814" Received: from silpixa00400466.ir.intel.com ([10.237.213.210]) by FMSMGA003.fm.intel.com with ESMTP; 15 Mar 2021 04:34:49 -0700 From: Conor Walsh To: jerinj@marvell.com, stephen@networkplumber.org, bernard.iremonger@intel.com, konstantin.ananyev@intel.com, vladimir.medvedkin@intel.com, anatoly.burakov@intel.com Cc: dev@dpdk.org, Conor Walsh Date: Mon, 15 Mar 2021 11:34:36 +0000 Message-Id: <20210315113439.1045223-3-conor.walsh@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210315113439.1045223-1-conor.walsh@intel.com> References: <20210311120153.186213-1-conor.walsh@intel.com> <20210315113439.1045223-1-conor.walsh@intel.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH v5 2/5] examples/l3fwd: move l3fwd routes to common header 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" To prevent code duplication from the addition of lookup methods the routes specified in lpm should be moved to a common header. Signed-off-by: Conor Walsh Acked-by: Konstantin Ananyev Acked-by: Vladimir Medvedkin --- examples/l3fwd/l3fwd_common_route.h | 48 +++++++++++++++++++ examples/l3fwd/l3fwd_lpm.c | 74 +++++++---------------------- 2 files changed, 65 insertions(+), 57 deletions(-) create mode 100644 examples/l3fwd/l3fwd_common_route.h diff --git a/examples/l3fwd/l3fwd_common_route.h b/examples/l3fwd/l3fwd_common_route.h new file mode 100644 index 0000000000..7f0125a8a5 --- /dev/null +++ b/examples/l3fwd/l3fwd_common_route.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2021 Intel Corporation + */ + +#include +#include + +struct ipv4_l3fwd_common_route { + uint32_t ip; + uint8_t depth; + uint8_t if_out; +}; + +struct ipv6_l3fwd_common_route { + uint8_t ip[16]; + uint8_t depth; + uint8_t if_out; +}; + +/* + * 198.18.0.0/16 are set aside for RFC2544 benchmarking (RFC5735). + * 198.18.{0-7}.0/24 = Port {0-7} + */ +static const struct ipv4_l3fwd_common_route ipv4_l3fwd_common_route_array[] = { + {RTE_IPV4(198, 18, 0, 0), 24, 0}, + {RTE_IPV4(198, 18, 1, 0), 24, 1}, + {RTE_IPV4(198, 18, 2, 0), 24, 2}, + {RTE_IPV4(198, 18, 3, 0), 24, 3}, + {RTE_IPV4(198, 18, 4, 0), 24, 4}, + {RTE_IPV4(198, 18, 5, 0), 24, 5}, + {RTE_IPV4(198, 18, 6, 0), 24, 6}, + {RTE_IPV4(198, 18, 7, 0), 24, 7}, +}; + +/* + * 2001:200::/48 is IANA reserved range for IPv6 benchmarking (RFC5180). + * 2001:200:0:{0-7}::/64 = Port {0-7} + */ +static const struct ipv6_l3fwd_common_route ipv6_l3fwd_common_route_array[] = { + {{32, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 0}, + {{32, 1, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 1}, + {{32, 1, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 2}, + {{32, 1, 2, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 3}, + {{32, 1, 2, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 4}, + {{32, 1, 2, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 5}, + {{32, 1, 2, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 6}, + {{32, 1, 2, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 7}, +}; diff --git a/examples/l3fwd/l3fwd_lpm.c b/examples/l3fwd/l3fwd_lpm.c index 1cfaf36572..818cf717d1 100644 --- a/examples/l3fwd/l3fwd_lpm.c +++ b/examples/l3fwd/l3fwd_lpm.c @@ -30,47 +30,7 @@ #include "l3fwd.h" #include "l3fwd_event.h" -struct ipv4_l3fwd_lpm_route { - uint32_t ip; - uint8_t depth; - uint8_t if_out; -}; - -struct ipv6_l3fwd_lpm_route { - uint8_t ip[16]; - uint8_t depth; - uint8_t if_out; -}; - -/* - * 198.18.0.0/16 are set aside for RFC2544 benchmarking (RFC5735). - * 198.18.{0-7}.0/24 = Port {0-7} - */ -static const struct ipv4_l3fwd_lpm_route ipv4_l3fwd_lpm_route_array[] = { - {RTE_IPV4(198, 18, 0, 0), 24, 0}, - {RTE_IPV4(198, 18, 1, 0), 24, 1}, - {RTE_IPV4(198, 18, 2, 0), 24, 2}, - {RTE_IPV4(198, 18, 3, 0), 24, 3}, - {RTE_IPV4(198, 18, 4, 0), 24, 4}, - {RTE_IPV4(198, 18, 5, 0), 24, 5}, - {RTE_IPV4(198, 18, 6, 0), 24, 6}, - {RTE_IPV4(198, 18, 7, 0), 24, 7}, -}; - -/* - * 2001:200::/48 is IANA reserved range for IPv6 benchmarking (RFC5180). - * 2001:200:0:{0-7}::/64 = Port {0-7} - */ -static const struct ipv6_l3fwd_lpm_route ipv6_l3fwd_lpm_route_array[] = { - {{32, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 0}, - {{32, 1, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 1}, - {{32, 1, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 2}, - {{32, 1, 2, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 3}, - {{32, 1, 2, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 4}, - {{32, 1, 2, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 5}, - {{32, 1, 2, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 6}, - {{32, 1, 2, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0}, 64, 7}, -}; +#include "l3fwd_common_route.h" #define IPV4_L3FWD_LPM_MAX_RULES 1024 #define IPV4_L3FWD_LPM_NUMBER_TBL8S (1 << 8) @@ -485,18 +445,18 @@ setup_lpm(const int socketid) socketid); /* populate the LPM table */ - for (i = 0; i < RTE_DIM(ipv4_l3fwd_lpm_route_array); i++) { + for (i = 0; i < RTE_DIM(ipv4_l3fwd_common_route_array); i++) { struct in_addr in; /* skip unused ports */ - if ((1 << ipv4_l3fwd_lpm_route_array[i].if_out & + if ((1 << ipv4_l3fwd_common_route_array[i].if_out & enabled_port_mask) == 0) continue; ret = rte_lpm_add(ipv4_l3fwd_lpm_lookup_struct[socketid], - ipv4_l3fwd_lpm_route_array[i].ip, - ipv4_l3fwd_lpm_route_array[i].depth, - ipv4_l3fwd_lpm_route_array[i].if_out); + ipv4_l3fwd_common_route_array[i].ip, + ipv4_l3fwd_common_route_array[i].depth, + ipv4_l3fwd_common_route_array[i].if_out); if (ret < 0) { rte_exit(EXIT_FAILURE, @@ -504,11 +464,11 @@ setup_lpm(const int socketid) i, socketid); } - in.s_addr = htonl(ipv4_l3fwd_lpm_route_array[i].ip); + in.s_addr = htonl(ipv4_l3fwd_common_route_array[i].ip); printf("LPM: Adding route %s / %d (%d)\n", inet_ntop(AF_INET, &in, abuf, sizeof(abuf)), - ipv4_l3fwd_lpm_route_array[i].depth, - ipv4_l3fwd_lpm_route_array[i].if_out); + ipv4_l3fwd_common_route_array[i].depth, + ipv4_l3fwd_common_route_array[i].if_out); } /* create the LPM6 table */ @@ -525,17 +485,17 @@ setup_lpm(const int socketid) socketid); /* populate the LPM table */ - for (i = 0; i < RTE_DIM(ipv6_l3fwd_lpm_route_array); i++) { + for (i = 0; i < RTE_DIM(ipv6_l3fwd_common_route_array); i++) { /* skip unused ports */ - if ((1 << ipv6_l3fwd_lpm_route_array[i].if_out & + if ((1 << ipv6_l3fwd_common_route_array[i].if_out & enabled_port_mask) == 0) continue; ret = rte_lpm6_add(ipv6_l3fwd_lpm_lookup_struct[socketid], - ipv6_l3fwd_lpm_route_array[i].ip, - ipv6_l3fwd_lpm_route_array[i].depth, - ipv6_l3fwd_lpm_route_array[i].if_out); + ipv6_l3fwd_common_route_array[i].ip, + ipv6_l3fwd_common_route_array[i].depth, + ipv6_l3fwd_common_route_array[i].if_out); if (ret < 0) { rte_exit(EXIT_FAILURE, @@ -544,10 +504,10 @@ setup_lpm(const int socketid) } printf("LPM: Adding route %s / %d (%d)\n", - inet_ntop(AF_INET6, ipv6_l3fwd_lpm_route_array[i].ip, + inet_ntop(AF_INET6, ipv6_l3fwd_common_route_array[i].ip, abuf, sizeof(abuf)), - ipv6_l3fwd_lpm_route_array[i].depth, - ipv6_l3fwd_lpm_route_array[i].if_out); + ipv6_l3fwd_common_route_array[i].depth, + ipv6_l3fwd_common_route_array[i].if_out); } } From patchwork Mon Mar 15 11:34:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Walsh X-Patchwork-Id: 89121 X-Patchwork-Delegate: david.marchand@redhat.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id EF9C7A054F; Mon, 15 Mar 2021 12:35:06 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 7F33524262F; Mon, 15 Mar 2021 12:34:57 +0100 (CET) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by mails.dpdk.org (Postfix) with ESMTP id 4B92D4003C for ; Mon, 15 Mar 2021 12:34:56 +0100 (CET) IronPort-SDR: A73813hWYih2A4PxVEzIxNMocH442ipC5gzNJmoOZT0FPhXl/7mjNwsJqPgBZQueyVLCnI1XQp Sas8gkXfjUaw== X-IronPort-AV: E=McAfee;i="6000,8403,9923"; a="188432272" X-IronPort-AV: E=Sophos;i="5.81,249,1610438400"; d="scan'208";a="188432272" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Mar 2021 04:34:55 -0700 IronPort-SDR: UXLWZiruc9StUl4NwIeM7G5v/u7m/7YWwdIgoAC5uLwZ+63iXkCXdh0sxSM12IZWCu+T4TaJSy yrX9P2drxGLw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,249,1610438400"; d="scan'208";a="439728825" Received: from silpixa00400466.ir.intel.com ([10.237.213.210]) by FMSMGA003.fm.intel.com with ESMTP; 15 Mar 2021 04:34:51 -0700 From: Conor Walsh To: jerinj@marvell.com, stephen@networkplumber.org, bernard.iremonger@intel.com, konstantin.ananyev@intel.com, vladimir.medvedkin@intel.com, anatoly.burakov@intel.com Cc: dev@dpdk.org, Conor Walsh Date: Mon, 15 Mar 2021 11:34:37 +0000 Message-Id: <20210315113439.1045223-4-conor.walsh@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210315113439.1045223-1-conor.walsh@intel.com> References: <20210311120153.186213-1-conor.walsh@intel.com> <20210315113439.1045223-1-conor.walsh@intel.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH v5 3/5] examples/l3fwd: add FIB infrastructure 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" The purpose of this commit is to add the necessary function calls and supporting infrastructure to allow the Forwarding Information Base (FIB) library to be integrated into the l3fwd sample app. Instead of adding an individual flag for FIB, a new flag '--lookup' has been added that allows the user to select their desired lookup method. The flags '-E' and '-L' have been retained for backwards compatibility. Signed-off-by: Conor Walsh Acked-by: Konstantin Ananyev Acked-by: Vladimir Medvedkin Acked-by: Anatoly Burako --- examples/l3fwd/Makefile | 2 +- examples/l3fwd/l3fwd.h | 27 ++++++++- examples/l3fwd/l3fwd_event.c | 9 +++ examples/l3fwd/l3fwd_event.h | 1 + examples/l3fwd/l3fwd_fib.c | 60 ++++++++++++++++++++ examples/l3fwd/main.c | 107 ++++++++++++++++++++++++++--------- examples/l3fwd/meson.build | 4 +- 7 files changed, 176 insertions(+), 34 deletions(-) create mode 100644 examples/l3fwd/l3fwd_fib.c diff --git a/examples/l3fwd/Makefile b/examples/l3fwd/Makefile index 7e70bbd826..5f7baffbf7 100644 --- a/examples/l3fwd/Makefile +++ b/examples/l3fwd/Makefile @@ -5,7 +5,7 @@ APP = l3fwd # all source are stored in SRCS-y -SRCS-y := main.c l3fwd_lpm.c l3fwd_em.c l3fwd_event.c +SRCS-y := main.c l3fwd_lpm.c l3fwd_fib.c l3fwd_em.c l3fwd_event.c SRCS-y += l3fwd_event_generic.c l3fwd_event_internal_port.c # Build using pkg-config variables if possible diff --git a/examples/l3fwd/l3fwd.h b/examples/l3fwd/l3fwd.h index 2cf06099e0..a808d60247 100644 --- a/examples/l3fwd/l3fwd.h +++ b/examples/l3fwd/l3fwd.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: BSD-3-Clause - * Copyright(c) 2010-2016 Intel Corporation + * Copyright(c) 2010-2021 Intel Corporation */ #ifndef __L3_FWD_H__ @@ -180,13 +180,16 @@ is_valid_ipv4_pkt(struct rte_ipv4_hdr *pkt, uint32_t link_len) int init_mem(uint16_t portid, unsigned int nb_mbuf); -/* Function pointers for LPM or EM functionality. */ +/* Function pointers for LPM, EM or FIB functionality. */ void setup_lpm(const int socketid); void setup_hash(const int socketid); +void +setup_fib(const int socketid); + int em_check_ptype(int portid); @@ -207,6 +210,9 @@ em_main_loop(__rte_unused void *dummy); int lpm_main_loop(__rte_unused void *dummy); +int +fib_main_loop(__rte_unused void *dummy); + int lpm_event_main_loop_tx_d(__rte_unused void *dummy); int @@ -225,8 +231,17 @@ em_event_main_loop_tx_q(__rte_unused void *dummy); int em_event_main_loop_tx_q_burst(__rte_unused void *dummy); +int +fib_event_main_loop_tx_d(__rte_unused void *dummy); +int +fib_event_main_loop_tx_d_burst(__rte_unused void *dummy); +int +fib_event_main_loop_tx_q(__rte_unused void *dummy); +int +fib_event_main_loop_tx_q_burst(__rte_unused void *dummy); + -/* Return ipv4/ipv6 fwd lookup struct for LPM or EM. */ +/* Return ipv4/ipv6 fwd lookup struct for LPM, EM or FIB. */ void * em_get_ipv4_l3fwd_lookup_struct(const int socketid); @@ -239,4 +254,10 @@ lpm_get_ipv4_l3fwd_lookup_struct(const int socketid); void * lpm_get_ipv6_l3fwd_lookup_struct(const int socketid); +void * +fib_get_ipv4_l3fwd_lookup_struct(const int socketid); + +void * +fib_get_ipv6_l3fwd_lookup_struct(const int socketid); + #endif /* __L3_FWD_H__ */ diff --git a/examples/l3fwd/l3fwd_event.c b/examples/l3fwd/l3fwd_event.c index 4d31593a0a..961860ea18 100644 --- a/examples/l3fwd/l3fwd_event.c +++ b/examples/l3fwd/l3fwd_event.c @@ -227,6 +227,12 @@ l3fwd_event_resource_setup(struct rte_eth_conf *port_conf) [1][0] = em_event_main_loop_tx_q, [1][1] = em_event_main_loop_tx_q_burst, }; + const event_loop_cb fib_event_loop[2][2] = { + [0][0] = fib_event_main_loop_tx_d, + [0][1] = fib_event_main_loop_tx_d_burst, + [1][0] = fib_event_main_loop_tx_q, + [1][1] = fib_event_main_loop_tx_q_burst, + }; uint32_t event_queue_cfg; int ret; @@ -264,4 +270,7 @@ l3fwd_event_resource_setup(struct rte_eth_conf *port_conf) evt_rsrc->ops.em_event_loop = em_event_loop[evt_rsrc->tx_mode_q] [evt_rsrc->has_burst]; + + evt_rsrc->ops.fib_event_loop = fib_event_loop[evt_rsrc->tx_mode_q] + [evt_rsrc->has_burst]; } diff --git a/examples/l3fwd/l3fwd_event.h b/examples/l3fwd/l3fwd_event.h index 0e46164170..3ad1902ab5 100644 --- a/examples/l3fwd/l3fwd_event.h +++ b/examples/l3fwd/l3fwd_event.h @@ -55,6 +55,7 @@ struct l3fwd_event_setup_ops { adapter_setup_cb adapter_setup; event_loop_cb lpm_event_loop; event_loop_cb em_event_loop; + event_loop_cb fib_event_loop; }; struct l3fwd_event_resources { diff --git a/examples/l3fwd/l3fwd_fib.c b/examples/l3fwd/l3fwd_fib.c new file mode 100644 index 0000000000..0a2d02db2f --- /dev/null +++ b/examples/l3fwd/l3fwd_fib.c @@ -0,0 +1,60 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2021 Intel Corporation + */ + +#include +#include + +#include "l3fwd.h" +#include "l3fwd_event.h" +#include "l3fwd_common_route.h" + +/* Main fib processing loop. */ +int +fib_main_loop(__rte_unused void *dummy) +{ + return 0; +} + +int __rte_noinline +fib_event_main_loop_tx_d(__rte_unused void *dummy) +{ + return 0; +} + +int __rte_noinline +fib_event_main_loop_tx_d_burst(__rte_unused void *dummy) +{ + return 0; +} + +int __rte_noinline +fib_event_main_loop_tx_q(__rte_unused void *dummy) +{ + return 0; +} + +int __rte_noinline +fib_event_main_loop_tx_q_burst(__rte_unused void *dummy) +{ + return 0; +} + +/* Function to setup fib. */ +void +setup_fib(__rte_unused const int socketid) +{} + +/* Return ipv4 fib lookup struct. */ +void * +fib_get_ipv4_l3fwd_lookup_struct(__rte_unused const int socketid) +{ + return 0; +} + +/* Return ipv6 fib lookup struct. */ +void * +fib_get_ipv6_l3fwd_lookup_struct(__rte_unused const int socketid) +{ + return 0; +} diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c index bb49e5faff..3f48895e87 100644 --- a/examples/l3fwd/main.c +++ b/examples/l3fwd/main.c @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: BSD-3-Clause - * Copyright(c) 2010-2016 Intel Corporation + * Copyright(c) 2010-2021 Intel Corporation */ #include @@ -60,9 +60,14 @@ static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT; /**< Ports set in promiscuous mode off by default. */ static int promiscuous_on; -/* Select Longest-Prefix or Exact match. */ -static int l3fwd_lpm_on; -static int l3fwd_em_on; +/* Select Longest-Prefix, Exact match or Forwarding Information Base. */ +enum L3FWD_LOOKUP_MODE { + L3FWD_LOOKUP_DEFAULT, + L3FWD_LOOKUP_LPM, + L3FWD_LOOKUP_EM, + L3FWD_LOOKUP_FIB +}; +static enum L3FWD_LOOKUP_MODE lookup_mode; /* Global variables. */ @@ -162,17 +167,29 @@ static struct l3fwd_lkp_mode l3fwd_lpm_lkp = { .get_ipv6_lookup_struct = lpm_get_ipv6_l3fwd_lookup_struct, }; +static struct l3fwd_lkp_mode l3fwd_fib_lkp = { + .setup = setup_fib, + .check_ptype = lpm_check_ptype, + .cb_parse_ptype = lpm_cb_parse_ptype, + .main_loop = fib_main_loop, + .get_ipv4_lookup_struct = fib_get_ipv4_l3fwd_lookup_struct, + .get_ipv6_lookup_struct = fib_get_ipv6_l3fwd_lookup_struct, +}; + /* * Setup lookup methods for forwarding. - * Currently exact-match and longest-prefix-match - * are supported ones. + * Currently exact-match, longest-prefix-match and forwarding information + * base are the supported ones. */ static void setup_l3fwd_lookup_tables(void) { /* Setup HASH lookup functions. */ - if (l3fwd_em_on) + if (lookup_mode == L3FWD_LOOKUP_EM) l3fwd_lkp = l3fwd_em_lkp; + /* Setup FIB lookup functions. */ + else if (lookup_mode == L3FWD_LOOKUP_FIB) + l3fwd_lkp = l3fwd_fib_lkp; /* Setup LPM lookup functions. */ else l3fwd_lkp = l3fwd_lpm_lkp; @@ -286,12 +303,13 @@ print_usage(const char *prgname) " [--parse-ptype]" " [--per-port-pool]" " [--mode]" - " [--eventq-sched]\n\n" + " [--eventq-sched]" + " [--lookup]\n\n" " -p PORTMASK: Hexadecimal bitmask of ports to configure\n" " -P : Enable promiscuous mode\n" - " -E : Enable exact match\n" - " -L : Enable longest prefix match (default)\n" + " -E : Enable exact match, legacy flag please use --lookup=em instead\n" + " -L : Enable longest prefix match, legacy flag please use --lookup=lpm instead\n" " --config (port,queue,lcore): Rx queue configuration\n" " --eth-dest=X,MM:MM:MM:MM:MM:MM: Ethernet destination for port X\n" " --enable-jumbo: Enable jumbo frames\n" @@ -310,7 +328,10 @@ print_usage(const char *prgname) " Valid only if --mode=eventdev\n" " --event-eth-rxqs: Number of ethernet RX queues per device.\n" " Default: 1\n" - " Valid only if --mode=eventdev\n\n", + " Valid only if --mode=eventdev\n" + " --lookup: Select the lookup method\n" + " Default: lpm\n" + " Accepted: em (Exact Match), lpm (Longest Prefix Match), fib (First Information Base)\n\n", prgname); } @@ -485,13 +506,32 @@ parse_event_eth_rx_queues(const char *eth_rx_queues) evt_rsrc->eth_rx_queues = num_eth_rx_queues; } +static void +parse_lookup(const char *optarg) +{ + if (lookup_mode != L3FWD_LOOKUP_DEFAULT) { + rte_exit(EXIT_FAILURE, + "Only one lookup mode is allowed at a time!\n"); + } + if (!strcmp(optarg, "em")) + lookup_mode = L3FWD_LOOKUP_EM; + else if (!strcmp(optarg, "lpm")) + lookup_mode = L3FWD_LOOKUP_LPM; + else if (!strcmp(optarg, "fib")) + lookup_mode = L3FWD_LOOKUP_FIB; + else { + rte_exit(EXIT_FAILURE, + "Invalid --lookup option! Accepted options: em, lpm, fib\n"); + } +} + #define MAX_JUMBO_PKT_LEN 9600 static const char short_options[] = "p:" /* portmask */ "P" /* promiscuous */ - "L" /* enable long prefix match */ - "E" /* enable exact match */ + "L" /* legacy enable long prefix match */ + "E" /* legacy enable exact match */ ; #define CMD_LINE_OPT_CONFIG "config" @@ -505,6 +545,7 @@ static const char short_options[] = #define CMD_LINE_OPT_MODE "mode" #define CMD_LINE_OPT_EVENTQ_SYNC "eventq-sched" #define CMD_LINE_OPT_EVENT_ETH_RX_QUEUES "event-eth-rxqs" +#define CMD_LINE_OPT_LOOKUP "lookup" enum { /* long options mapped to a short option */ @@ -522,6 +563,7 @@ enum { CMD_LINE_OPT_MODE_NUM, CMD_LINE_OPT_EVENTQ_SYNC_NUM, CMD_LINE_OPT_EVENT_ETH_RX_QUEUES_NUM, + CMD_LINE_OPT_LOOKUP_NUM, }; static const struct option lgopts[] = { @@ -537,6 +579,7 @@ static const struct option lgopts[] = { {CMD_LINE_OPT_EVENTQ_SYNC, 1, 0, CMD_LINE_OPT_EVENTQ_SYNC_NUM}, {CMD_LINE_OPT_EVENT_ETH_RX_QUEUES, 1, 0, CMD_LINE_OPT_EVENT_ETH_RX_QUEUES_NUM}, + {CMD_LINE_OPT_LOOKUP, 1, 0, CMD_LINE_OPT_LOOKUP_NUM}, {NULL, 0, 0, 0} }; @@ -589,11 +632,19 @@ parse_args(int argc, char **argv) break; case 'E': - l3fwd_em_on = 1; + if (lookup_mode != L3FWD_LOOKUP_DEFAULT) { + fprintf(stderr, "Only one lookup mode is allowed at a time!\n"); + return -1; + } + lookup_mode = L3FWD_LOOKUP_EM; break; case 'L': - l3fwd_lpm_on = 1; + if (lookup_mode != L3FWD_LOOKUP_DEFAULT) { + fprintf(stderr, "Only one lookup mode is allowed at a time!\n"); + return -1; + } + lookup_mode = L3FWD_LOOKUP_LPM; break; /* long options */ @@ -680,18 +731,16 @@ parse_args(int argc, char **argv) eth_rx_q = 1; break; + case CMD_LINE_OPT_LOOKUP_NUM: + parse_lookup(optarg); + break; + default: print_usage(prgname); return -1; } } - /* If both LPM and EM are selected, return error. */ - if (l3fwd_lpm_on && l3fwd_em_on) { - fprintf(stderr, "LPM and EM are mutually exclusive, select only one\n"); - return -1; - } - if (evt_rsrc->enabled && lcore_params) { fprintf(stderr, "lcore config is not valid when event mode is selected\n"); return -1; @@ -711,17 +760,17 @@ parse_args(int argc, char **argv) * Nothing is selected, pick longest-prefix match * as default match. */ - if (!l3fwd_lpm_on && !l3fwd_em_on) { - fprintf(stderr, "LPM or EM none selected, default LPM on\n"); - l3fwd_lpm_on = 1; + if (lookup_mode == L3FWD_LOOKUP_DEFAULT) { + fprintf(stderr, "Neither LPM, EM, or FIB selected, defaulting to LPM\n"); + lookup_mode = L3FWD_LOOKUP_LPM; } /* * ipv6 and hash flags are valid only for - * exact macth, reset them to default for + * exact match, reset them to default for * longest-prefix match. */ - if (l3fwd_lpm_on) { + if (lookup_mode == L3FWD_LOOKUP_LPM) { ipv6 = 0; hash_entry_number = HASH_ENTRY_NUMBER_DEFAULT; } @@ -780,7 +829,7 @@ init_mem(uint16_t portid, unsigned int nb_mbuf) printf("Allocated mbuf pool on socket %d\n", socketid); - /* Setup either LPM or EM(f.e Hash). But, only once per + /* Setup LPM, EM(f.e Hash) or FIB. But, only once per * available socket. */ if (!lkp_per_socket[socketid]) { @@ -1219,8 +1268,10 @@ main(int argc, char **argv) /* Configure eventdev parameters if user has requested */ if (evt_rsrc->enabled) { l3fwd_event_resource_setup(&port_conf); - if (l3fwd_em_on) + if (lookup_mode == L3FWD_LOOKUP_EM) l3fwd_lkp.main_loop = evt_rsrc->ops.em_event_loop; + else if (lookup_mode == L3FWD_LOOKUP_FIB) + l3fwd_lkp.main_loop = evt_rsrc->ops.fib_event_loop; else l3fwd_lkp.main_loop = evt_rsrc->ops.lpm_event_loop; l3fwd_event_service_setup(); diff --git a/examples/l3fwd/meson.build b/examples/l3fwd/meson.build index 7d72b1b365..2e5d1d34f2 100644 --- a/examples/l3fwd/meson.build +++ b/examples/l3fwd/meson.build @@ -7,8 +7,8 @@ # DPDK instance, use 'make' allow_experimental_apis = true -deps += ['hash', 'lpm', 'eventdev'] +deps += ['hash', 'lpm', 'fib', 'eventdev'] sources = files( - 'l3fwd_em.c', 'l3fwd_lpm.c', 'l3fwd_event.c', + 'l3fwd_em.c', 'l3fwd_lpm.c', 'l3fwd_fib.c', 'l3fwd_event.c', 'l3fwd_event_internal_port.c', 'l3fwd_event_generic.c', 'main.c' ) From patchwork Mon Mar 15 11:34:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Walsh X-Patchwork-Id: 89122 X-Patchwork-Delegate: david.marchand@redhat.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id C8AC4A054F; Mon, 15 Mar 2021 12:35:15 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 17F2424264D; Mon, 15 Mar 2021 12:35:01 +0100 (CET) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by mails.dpdk.org (Postfix) with ESMTP id D95FF242652 for ; Mon, 15 Mar 2021 12:34:58 +0100 (CET) IronPort-SDR: kERUNnWGmfTTkUF0saesI+Ouc5djCTOPE9zLLwD7ghytBntrm8M9G+xUy1SC4QpWb3kBC0U3ac 9KTuSzrWZkew== X-IronPort-AV: E=McAfee;i="6000,8403,9923"; a="188432277" X-IronPort-AV: E=Sophos;i="5.81,249,1610438400"; d="scan'208";a="188432277" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Mar 2021 04:34:58 -0700 IronPort-SDR: sND1TF16zh7MDmW87ilub6viOd6i6BL+EXm6e2h8M8caD4ptb/+Of3rOXR+iY5Qs5C/EA53ry/ UevA/dlYnp3g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,249,1610438400"; d="scan'208";a="439728835" Received: from silpixa00400466.ir.intel.com ([10.237.213.210]) by FMSMGA003.fm.intel.com with ESMTP; 15 Mar 2021 04:34:56 -0700 From: Conor Walsh To: jerinj@marvell.com, stephen@networkplumber.org, bernard.iremonger@intel.com, konstantin.ananyev@intel.com, vladimir.medvedkin@intel.com, anatoly.burakov@intel.com Cc: dev@dpdk.org, Conor Walsh Date: Mon, 15 Mar 2021 11:34:38 +0000 Message-Id: <20210315113439.1045223-5-conor.walsh@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210315113439.1045223-1-conor.walsh@intel.com> References: <20210311120153.186213-1-conor.walsh@intel.com> <20210315113439.1045223-1-conor.walsh@intel.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH v5 4/5] examples/l3fwd: implement FIB lookup method 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" This patch implements the Forwarding Information Base (FIB) library in l3fwd using the function calls and infrastructure introduced in the previous patch. Signed-off-by: Conor Walsh Acked-by: Konstantin Ananyev Acked-by: Vladimir Medvedkin --- examples/l3fwd/l3fwd_fib.c | 480 ++++++++++++++++++++++++++++++++++++- 1 file changed, 474 insertions(+), 6 deletions(-) diff --git a/examples/l3fwd/l3fwd_fib.c b/examples/l3fwd/l3fwd_fib.c index 0a2d02db2f..a58b933f83 100644 --- a/examples/l3fwd/l3fwd_fib.c +++ b/examples/l3fwd/l3fwd_fib.c @@ -2,59 +2,527 @@ * Copyright(c) 2021 Intel Corporation */ +#include +#include +#include +#include +#include + #include #include #include "l3fwd.h" +#if defined RTE_ARCH_X86 +#include "l3fwd_sse.h" +#elif defined __ARM_NEON +#include "l3fwd_neon.h" +#elif defined RTE_ARCH_PPC_64 +#include "l3fwd_altivec.h" +#endif #include "l3fwd_event.h" #include "l3fwd_common_route.h" +/* Configure how many packets ahead to prefetch for fib. */ +#define FIB_PREFETCH_OFFSET 4 + +/* A non-existent portid is needed to denote a default hop for fib. */ +#define FIB_DEFAULT_HOP 999 + +/* + * If the machine has SSE, NEON or PPC 64 then multiple packets + * can be sent at once if not only single packets will be sent + */ +#if defined RTE_ARCH_X86 || defined __ARM_NEON \ + || defined RTE_ARCH_PPC_64 +#define FIB_SEND_MULTI +#endif + +static struct rte_fib *ipv4_l3fwd_fib_lookup_struct[NB_SOCKETS]; +static struct rte_fib6 *ipv6_l3fwd_fib_lookup_struct[NB_SOCKETS]; + +/* Parse packet type and ip address. */ +static inline void +fib_parse_packet(struct rte_mbuf *mbuf, + uint32_t *ipv4, uint32_t *ipv4_cnt, + uint8_t ipv6[RTE_FIB6_IPV6_ADDR_SIZE], + uint32_t *ipv6_cnt, uint8_t *ip_type) +{ + struct rte_ether_hdr *eth_hdr; + struct rte_ipv4_hdr *ipv4_hdr; + struct rte_ipv6_hdr *ipv6_hdr; + + eth_hdr = rte_pktmbuf_mtod(mbuf, struct rte_ether_hdr *); + /* IPv4 */ + if (mbuf->packet_type & RTE_PTYPE_L3_IPV4) { + ipv4_hdr = (struct rte_ipv4_hdr *)(eth_hdr + 1); + *ipv4 = rte_be_to_cpu_32(ipv4_hdr->dst_addr); + /* Store type of packet in type_arr (IPv4=1, IPv6=0). */ + *ip_type = 1; + (*ipv4_cnt)++; + } + /* IPv6 */ + else { + ipv6_hdr = (struct rte_ipv6_hdr *)(eth_hdr + 1); + rte_mov16(ipv6, (const uint8_t *)ipv6_hdr->dst_addr); + *ip_type = 0; + (*ipv6_cnt)++; + } +} + +/* + * If the machine does not have SSE, NEON or PPC 64 then the packets + * are sent one at a time using send_single_packet() + */ +#if !defined FIB_SEND_MULTI +static inline void +fib_send_single(int nb_tx, struct lcore_conf *qconf, + struct rte_mbuf **pkts_burst, uint16_t hops[nb_tx]) +{ + int32_t j; + struct rte_ether_hdr *eth_hdr; + + for (j = 0; j < nb_tx; j++) { + /* Run rfc1812 if packet is ipv4 and checks enabled. */ +#if defined DO_RFC_1812_CHECKS + rfc1812_process((struct rte_ipv4_hdr *)(rte_pktmbuf_mtod( + pkts_burst[j], struct rte_ether_hdr *) + 1), + &hops[j], pkts_burst[j]->packet_type); +#endif + + /* Set MAC addresses. */ + eth_hdr = rte_pktmbuf_mtod(pkts_burst[j], + struct rte_ether_hdr *); + *(uint64_t *)ð_hdr->d_addr = dest_eth_addr[hops[j]]; + rte_ether_addr_copy(&ports_eth_addr[hops[j]], + ð_hdr->s_addr); + + /* Send single packet. */ + send_single_packet(qconf, pkts_burst[j], hops[j]); + } +} +#endif + +/* Bulk parse, fib lookup and send. */ +static inline void +fib_send_packets(int nb_rx, struct rte_mbuf **pkts_burst, + uint16_t portid, struct lcore_conf *qconf) +{ + uint32_t ipv4_arr[nb_rx]; + uint8_t ipv6_arr[nb_rx][RTE_FIB6_IPV6_ADDR_SIZE]; + uint16_t hops[nb_rx]; + uint64_t hopsv4[nb_rx], hopsv6[nb_rx]; + uint8_t type_arr[nb_rx]; + uint32_t ipv4_cnt = 0, ipv6_cnt = 0; + uint32_t ipv4_arr_assem = 0, ipv6_arr_assem = 0; + uint16_t nh; + int32_t i; + + /* Prefetch first packets. */ + for (i = 0; i < FIB_PREFETCH_OFFSET && i < nb_rx; i++) + rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i], void *)); + + /* Parse packet info and prefetch. */ + for (i = 0; i < (nb_rx - FIB_PREFETCH_OFFSET); i++) { + /* Prefetch packet. */ + rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[ + i + FIB_PREFETCH_OFFSET], void *)); + fib_parse_packet(pkts_burst[i], + &ipv4_arr[ipv4_cnt], &ipv4_cnt, + ipv6_arr[ipv6_cnt], &ipv6_cnt, + &type_arr[i]); + } + + /* Parse remaining packet info. */ + for (; i < nb_rx; i++) + fib_parse_packet(pkts_burst[i], + &ipv4_arr[ipv4_cnt], &ipv4_cnt, + ipv6_arr[ipv6_cnt], &ipv6_cnt, + &type_arr[i]); + + /* Lookup IPv4 hops if IPv4 packets are present. */ + if (likely(ipv4_cnt > 0)) + rte_fib_lookup_bulk(qconf->ipv4_lookup_struct, + ipv4_arr, hopsv4, ipv4_cnt); + + /* Lookup IPv6 hops if IPv6 packets are present. */ + if (ipv6_cnt > 0) + rte_fib6_lookup_bulk(qconf->ipv6_lookup_struct, + ipv6_arr, hopsv6, ipv6_cnt); + + /* Add IPv4 and IPv6 hops to one array depending on type. */ + for (i = 0; i < nb_rx; i++) { + if (type_arr[i]) + nh = (uint16_t)hopsv4[ipv4_arr_assem++]; + else + nh = (uint16_t)hopsv6[ipv6_arr_assem++]; + hops[i] = nh != FIB_DEFAULT_HOP ? nh : portid; + } + +#if defined FIB_SEND_MULTI + send_packets_multi(qconf, pkts_burst, hops, nb_rx); +#else + fib_send_single(nb_rx, qconf, pkts_burst, hops); +#endif +} + /* Main fib processing loop. */ int fib_main_loop(__rte_unused void *dummy) { + struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; + unsigned int lcore_id; + uint64_t prev_tsc, diff_tsc, cur_tsc; + int i, nb_rx; + uint16_t portid; + uint8_t queueid; + struct lcore_conf *qconf; + const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / + US_PER_S * BURST_TX_DRAIN_US; + + prev_tsc = 0; + + lcore_id = rte_lcore_id(); + qconf = &lcore_conf[lcore_id]; + + if (qconf->n_rx_queue == 0) { + RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id); + return 0; + } + + RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id); + + for (i = 0; i < qconf->n_rx_queue; i++) { + + portid = qconf->rx_queue_list[i].port_id; + queueid = qconf->rx_queue_list[i].queue_id; + RTE_LOG(INFO, L3FWD, + " -- lcoreid=%u portid=%u rxqueueid=%hhu\n", + lcore_id, portid, queueid); + } + + while (!force_quit) { + + cur_tsc = rte_rdtsc(); + + /* TX burst queue drain. */ + diff_tsc = cur_tsc - prev_tsc; + if (unlikely(diff_tsc > drain_tsc)) { + + for (i = 0; i < qconf->n_tx_port; ++i) { + portid = qconf->tx_port_id[i]; + if (qconf->tx_mbufs[portid].len == 0) + continue; + send_burst(qconf, + qconf->tx_mbufs[portid].len, + portid); + qconf->tx_mbufs[portid].len = 0; + } + + prev_tsc = cur_tsc; + } + + /* Read packet from RX queues. */ + for (i = 0; i < qconf->n_rx_queue; ++i) { + portid = qconf->rx_queue_list[i].port_id; + queueid = qconf->rx_queue_list[i].queue_id; + nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, + MAX_PKT_BURST); + if (nb_rx == 0) + continue; + + /* Use fib to lookup port IDs and transmit them. */ + fib_send_packets(nb_rx, pkts_burst, portid, qconf); + } + } + return 0; } +/* One eventdev loop for single and burst using fib. */ +static __rte_always_inline void +fib_event_loop(struct l3fwd_event_resources *evt_rsrc, + const uint8_t flags) +{ + const int event_p_id = l3fwd_get_free_event_port(evt_rsrc); + const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[ + evt_rsrc->evq.nb_queues - 1]; + const uint8_t event_d_id = evt_rsrc->event_d_id; + const uint16_t deq_len = evt_rsrc->deq_depth; + struct rte_event events[MAX_PKT_BURST]; + struct lcore_conf *lconf; + unsigned int lcore_id; + int nb_enq, nb_deq, i; + + uint32_t ipv4_arr[MAX_PKT_BURST]; + uint8_t ipv6_arr[MAX_PKT_BURST][RTE_FIB6_IPV6_ADDR_SIZE]; + uint64_t hopsv4[MAX_PKT_BURST], hopsv6[MAX_PKT_BURST]; + uint16_t nh; + uint8_t type_arr[MAX_PKT_BURST]; + uint32_t ipv4_cnt, ipv6_cnt; + uint32_t ipv4_arr_assem, ipv6_arr_assem; + + if (event_p_id < 0) + return; + + lcore_id = rte_lcore_id(); + + lconf = &lcore_conf[lcore_id]; + + RTE_LOG(INFO, L3FWD, "entering %s on lcore %u\n", __func__, lcore_id); + + while (!force_quit) { + /* Read events from RX queues. */ + nb_deq = rte_event_dequeue_burst(event_d_id, event_p_id, + events, deq_len, 0); + if (nb_deq == 0) { + rte_pause(); + continue; + } + + /* Reset counters. */ + ipv4_cnt = 0; + ipv6_cnt = 0; + ipv4_arr_assem = 0; + ipv6_arr_assem = 0; + + /* Prefetch first packets. */ + for (i = 0; i < FIB_PREFETCH_OFFSET && i < nb_deq; i++) + rte_prefetch0(rte_pktmbuf_mtod(events[i].mbuf, void *)); + + /* Parse packet info and prefetch. */ + for (i = 0; i < (nb_deq - FIB_PREFETCH_OFFSET); i++) { + if (flags & L3FWD_EVENT_TX_ENQ) { + events[i].queue_id = tx_q_id; + events[i].op = RTE_EVENT_OP_FORWARD; + } + + if (flags & L3FWD_EVENT_TX_DIRECT) + rte_event_eth_tx_adapter_txq_set(events[i].mbuf, + 0); + + /* Prefetch packet. */ + rte_prefetch0(rte_pktmbuf_mtod(events[ + i + FIB_PREFETCH_OFFSET].mbuf, + void *)); + + fib_parse_packet(events[i].mbuf, + &ipv4_arr[ipv4_cnt], &ipv4_cnt, + ipv6_arr[ipv6_cnt], &ipv6_cnt, + &type_arr[i]); + } + + /* Parse remaining packet info. */ + for (; i < nb_deq; i++) { + if (flags & L3FWD_EVENT_TX_ENQ) { + events[i].queue_id = tx_q_id; + events[i].op = RTE_EVENT_OP_FORWARD; + } + + if (flags & L3FWD_EVENT_TX_DIRECT) + rte_event_eth_tx_adapter_txq_set(events[i].mbuf, + 0); + + fib_parse_packet(events[i].mbuf, + &ipv4_arr[ipv4_cnt], &ipv4_cnt, + ipv6_arr[ipv6_cnt], &ipv6_cnt, + &type_arr[i]); + } + + /* Lookup IPv4 hops if IPv4 packets are present. */ + if (likely(ipv4_cnt > 0)) + rte_fib_lookup_bulk(lconf->ipv4_lookup_struct, + ipv4_arr, hopsv4, ipv4_cnt); + + /* Lookup IPv6 hops if IPv6 packets are present. */ + if (ipv6_cnt > 0) + rte_fib6_lookup_bulk(lconf->ipv6_lookup_struct, + ipv6_arr, hopsv6, ipv6_cnt); + + /* Assign ports looked up in fib depending on IPv4 or IPv6 */ + for (i = 0; i < nb_deq; i++) { + if (type_arr[i]) + nh = (uint16_t)hopsv4[ipv4_arr_assem++]; + else + nh = (uint16_t)hopsv6[ipv6_arr_assem++]; + if (nh != FIB_DEFAULT_HOP) + events[i].mbuf->port = nh; + } + + if (flags & L3FWD_EVENT_TX_ENQ) { + nb_enq = rte_event_enqueue_burst(event_d_id, event_p_id, + events, nb_deq); + while (nb_enq < nb_deq && !force_quit) + nb_enq += rte_event_enqueue_burst(event_d_id, + event_p_id, events + nb_enq, + nb_deq - nb_enq); + } + + if (flags & L3FWD_EVENT_TX_DIRECT) { + nb_enq = rte_event_eth_tx_adapter_enqueue(event_d_id, + event_p_id, events, nb_deq, 0); + while (nb_enq < nb_deq && !force_quit) + nb_enq += rte_event_eth_tx_adapter_enqueue( + event_d_id, event_p_id, + events + nb_enq, + nb_deq - nb_enq, 0); + } + } +} + int __rte_noinline fib_event_main_loop_tx_d(__rte_unused void *dummy) { + struct l3fwd_event_resources *evt_rsrc = + l3fwd_get_eventdev_rsrc(); + + fib_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT); return 0; } int __rte_noinline fib_event_main_loop_tx_d_burst(__rte_unused void *dummy) { + struct l3fwd_event_resources *evt_rsrc = + l3fwd_get_eventdev_rsrc(); + + fib_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT); return 0; } int __rte_noinline fib_event_main_loop_tx_q(__rte_unused void *dummy) { + struct l3fwd_event_resources *evt_rsrc = + l3fwd_get_eventdev_rsrc(); + + fib_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ); return 0; } int __rte_noinline fib_event_main_loop_tx_q_burst(__rte_unused void *dummy) { + struct l3fwd_event_resources *evt_rsrc = + l3fwd_get_eventdev_rsrc(); + + fib_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ); return 0; } /* Function to setup fib. */ void -setup_fib(__rte_unused const int socketid) -{} +setup_fib(const int socketid) +{ + struct rte_fib6_conf config; + struct rte_fib_conf config_ipv4; + unsigned int i; + int ret; + char s[64]; + char abuf[INET6_ADDRSTRLEN]; + + /* Create the fib IPv4 table. */ + config_ipv4.type = RTE_FIB_DIR24_8; + config_ipv4.max_routes = (1 << 16); + config_ipv4.default_nh = FIB_DEFAULT_HOP; + config_ipv4.dir24_8.nh_sz = RTE_FIB_DIR24_8_4B; + config_ipv4.dir24_8.num_tbl8 = (1 << 15); + snprintf(s, sizeof(s), "IPV4_L3FWD_FIB_%d", socketid); + ipv4_l3fwd_fib_lookup_struct[socketid] = + rte_fib_create(s, socketid, &config_ipv4); + if (ipv4_l3fwd_fib_lookup_struct[socketid] == NULL) + rte_exit(EXIT_FAILURE, + "Unable to create the l3fwd FIB table on socket %d\n", + socketid); + + /* Populate the fib ipv4 table. */ + for (i = 0; i < RTE_DIM(ipv4_l3fwd_common_route_array); i++) { + struct in_addr in; + + /* Skip unused ports. */ + if ((1 << ipv4_l3fwd_common_route_array[i].if_out & + enabled_port_mask) == 0) + continue; + + ret = rte_fib_add(ipv4_l3fwd_fib_lookup_struct[socketid], + ipv4_l3fwd_common_route_array[i].ip, + ipv4_l3fwd_common_route_array[i].depth, + ipv4_l3fwd_common_route_array[i].if_out); + + if (ret < 0) { + rte_exit(EXIT_FAILURE, + "Unable to add entry %u to the l3fwd FIB table on socket %d\n", + i, socketid); + } + + in.s_addr = htonl(ipv4_l3fwd_common_route_array[i].ip); + if (inet_ntop(AF_INET, &in, abuf, sizeof(abuf)) != NULL) { + printf("FIB: Adding route %s / %d (%d)\n", + abuf, + ipv4_l3fwd_common_route_array[i].depth, + ipv4_l3fwd_common_route_array[i].if_out); + } else { + printf("FIB: IPv4 route added to port %d\n", + ipv4_l3fwd_common_route_array[i].if_out); + } + } + + /* Create the fib IPv6 table. */ + snprintf(s, sizeof(s), "IPV6_L3FWD_FIB_%d", socketid); + + config.type = RTE_FIB6_TRIE; + config.max_routes = (1 << 16) - 1; + config.default_nh = FIB_DEFAULT_HOP; + config.trie.nh_sz = RTE_FIB6_TRIE_4B; + config.trie.num_tbl8 = (1 << 15); + ipv6_l3fwd_fib_lookup_struct[socketid] = rte_fib6_create(s, socketid, + &config); + if (ipv6_l3fwd_fib_lookup_struct[socketid] == NULL) + rte_exit(EXIT_FAILURE, + "Unable to create the l3fwd FIB table on socket %d\n", + socketid); + + /* Populate the fib IPv6 table. */ + for (i = 0; i < RTE_DIM(ipv6_l3fwd_common_route_array); i++) { + + /* Skip unused ports. */ + if ((1 << ipv6_l3fwd_common_route_array[i].if_out & + enabled_port_mask) == 0) + continue; + + ret = rte_fib6_add(ipv6_l3fwd_fib_lookup_struct[socketid], + ipv6_l3fwd_common_route_array[i].ip, + ipv6_l3fwd_common_route_array[i].depth, + ipv6_l3fwd_common_route_array[i].if_out); + + if (ret < 0) { + rte_exit(EXIT_FAILURE, + "Unable to add entry %u to the l3fwd FIB table on socket %d\n", + i, socketid); + } + + if (inet_ntop(AF_INET6, ipv6_l3fwd_common_route_array[i].ip, + abuf, sizeof(abuf)) != NULL) { + printf("FIB: Adding route %s / %d (%d)\n", + abuf, + ipv6_l3fwd_common_route_array[i].depth, + ipv6_l3fwd_common_route_array[i].if_out); + } else { + printf("FIB: IPv6 route added to port %d\n", + ipv6_l3fwd_common_route_array[i].if_out); + } + } +} /* Return ipv4 fib lookup struct. */ void * -fib_get_ipv4_l3fwd_lookup_struct(__rte_unused const int socketid) +fib_get_ipv4_l3fwd_lookup_struct(const int socketid) { - return 0; + return ipv4_l3fwd_fib_lookup_struct[socketid]; } /* Return ipv6 fib lookup struct. */ void * -fib_get_ipv6_l3fwd_lookup_struct(__rte_unused const int socketid) +fib_get_ipv6_l3fwd_lookup_struct(const int socketid) { - return 0; + return ipv6_l3fwd_fib_lookup_struct[socketid]; } From patchwork Mon Mar 15 11:34:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Walsh X-Patchwork-Id: 89123 X-Patchwork-Delegate: david.marchand@redhat.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id CEF79A054F; 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15 Mar 2021 04:34:58 -0700 From: Conor Walsh To: jerinj@marvell.com, stephen@networkplumber.org, bernard.iremonger@intel.com, konstantin.ananyev@intel.com, vladimir.medvedkin@intel.com, anatoly.burakov@intel.com Cc: dev@dpdk.org, Conor Walsh Date: Mon, 15 Mar 2021 11:34:39 +0000 Message-Id: <20210315113439.1045223-6-conor.walsh@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210315113439.1045223-1-conor.walsh@intel.com> References: <20210311120153.186213-1-conor.walsh@intel.com> <20210315113439.1045223-1-conor.walsh@intel.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH v5 5/5] doc/guides/l3_forward: update documentation for FIB 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" The purpose of this patch is to update the l3fwd user guide to include the changes proposed in this patchset. Signed-off-by: Conor Walsh Acked-by: John McNamara --- doc/guides/sample_app_ug/l3_forward.rst | 113 +++++++++++++++++++++--- 1 file changed, 100 insertions(+), 13 deletions(-) diff --git a/doc/guides/sample_app_ug/l3_forward.rst b/doc/guides/sample_app_ug/l3_forward.rst index e7875f8dcd..d5892bdcf8 100644 --- a/doc/guides/sample_app_ug/l3_forward.rst +++ b/doc/guides/sample_app_ug/l3_forward.rst @@ -11,7 +11,7 @@ The application performs L3 forwarding. Overview -------- -The application demonstrates the use of the hash and LPM libraries in the DPDK +The application demonstrates the use of the hash, LPM and FIB libraries in DPDK to implement packet forwarding using poll or event mode PMDs for packet I/O. The initialization and run-time paths are very similar to those of the :doc:`l2_forward_real_virtual` and :doc:`l2_forward_event`. @@ -22,7 +22,7 @@ decision is made based on information read from the input packet. Eventdev can optionally use S/W or H/W (if supported by platform) scheduler implementation for packet I/O based on run time parameters. -The lookup method is either hash-based or LPM-based and is selected at run time. When the selected lookup method is hash-based, +The lookup method is hash-based, LPM-based or FIB-based and is selected at run time. When the selected lookup method is hash-based, a hash object is used to emulate the flow classification stage. The hash object is used in correlation with a flow table to map each input packet to its flow at runtime. @@ -30,14 +30,14 @@ The hash lookup key is represented by a DiffServ 5-tuple composed of the followi Source IP Address, Destination IP Address, Protocol, Source Port and Destination Port. The ID of the output interface for the input packet is read from the identified flow table entry. The set of flows used by the application is statically configured and loaded into the hash at initialization time. -When the selected lookup method is LPM based, an LPM object is used to emulate the forwarding stage for IPv4 packets. -The LPM object is used as the routing table to identify the next hop for each input packet at runtime. +When the selected lookup method is LPM or FIB based, an LPM or FIB object is used to emulate the forwarding stage for IPv4 packets. +The LPM or FIB object is used as the routing table to identify the next hop for each input packet at runtime. -The LPM lookup key is represented by the Destination IP Address field read from the input packet. -The ID of the output interface for the input packet is the next hop returned by the LPM lookup. -The set of LPM rules used by the application is statically configured and loaded into the LPM object at initialization time. +The LPM and FIB lookup keys are represented by the Destination IP Address field read from the input packet. +The ID of the output interface for the input packet is the next hop returned by the LPM or FIB lookup. +The set of LPM and FIB rules used by the application is statically configured and loaded into the LPM or FIB object at initialization time. -In the sample application, hash-based forwarding supports IPv4 and IPv6. LPM-based forwarding supports IPv4 only. +In the sample application, hash-based and FIB-based forwarding supports both IPv4 and IPv6. LPM-based forwarding supports IPv4 only. Compiling the Application ------------------------- @@ -53,8 +53,7 @@ The application has a number of command line options:: ./dpdk-l3fwd [EAL options] -- -p PORTMASK [-P] - [-E] - [-L] + [--lookup LOOKUP_METHOD] --config(port,queue,lcore)[,(port,queue,lcore)] [--eth-dest=X,MM:MM:MM:MM:MM:MM] [--enable-jumbo [--max-pkt-len PKTLEN]] @@ -66,6 +65,8 @@ The application has a number of command line options:: [--mode] [--eventq-sched] [--event-eth-rxqs] + [-E] + [-L] Where, @@ -74,9 +75,7 @@ Where, * ``-P:`` Optional, sets all ports to promiscuous mode so that packets are accepted regardless of the packet's Ethernet MAC destination address. Without this option, only packets with the Ethernet MAC destination address set to the Ethernet address of the port are accepted. -* ``-E:`` Optional, enable exact match. - -* ``-L:`` Optional, enable longest prefix match. +* ``--lookup:`` Optional, Select the lookup method. Accepted options ``em`` (Exact Match), ``lpm`` (Longest Prefix Match), ``fib`` (Forwarding Information Base). Default is ``lpm``. * ``--config (port,queue,lcore)[,(port,queue,lcore)]:`` Determines which queues from which ports are mapped to which cores. @@ -102,6 +101,10 @@ Where, * ``--event-eth-rxqs:`` Optional, Number of ethernet RX queues per device. Only valid if --mode=eventdev. +* ``-E:`` Optional, enable exact match, legacy flag please use ``--lookup=em`` instead. + +* ``-L:`` Optional, enable longest prefix match, legacy flag please use ``--lookup=lpm`` instead. + For example, consider a dual processor socket platform with 8 physical cores, where cores 0-7 and 16-23 appear on socket 0, while cores 8-15 and 24-31 appear on socket 1. @@ -290,6 +293,61 @@ The LPM object is created and loaded with the pre-configured entries read from a } #endif +FIB Initialization +~~~~~~~~~~~~~~~~~~ + +The FIB object is created and loaded with the pre-configured entries read from a global array. + +.. code-block:: c + + #if (APP_LOOKUP_METHOD == APP_LOOKUP_FIB) + + void + setup_fib(const int socketid) + { + unsigned int i; + int ret; + char s[64]; + + /* create the FIB table */ + + snprintf(s, sizeof(s), "IPV4_L3FWD_FIB_%d", socketid); + + ipv4_l3fwd_fib_lookup_struct[socketid] = rte_fib_create(s, socketid, IPV4_L3FWD_FIB_MAX_RULES); + + if (ipv4_l3fwd_fib_lookup_struct[socketid] == NULL) + rte_exit(EXIT_FAILURE, "Unable to create the l3fwd FIB table on socket %d\n", socketid); + + /* populate the FIB table */ + + for (i = 0; i < IPV4_L3FWD_NUM_ROUTES; i++) { + struct in_addr in; + + /* skip unused ports */ + if ((1 << ipv4_l3fwd_fib_route_array[i].if_out & enabled_port_mask) == 0) + continue; + + ret = rte_fib_add(ipv4_l3fwd_fib_lookup_struct[socketid], + ipv4_l3fwd_fib_route_array[i].ip, + ipv4_l3fwd_fib_route_array[i].depth, + ipv4_l3fwd_fib_route_array[i].if_out); + + if (ret < 0) { + rte_exit(EXIT_FAILURE, "Unable to add entry %u to the l3fwd FIB table on socket %d\n", + i, socketid); + } + + in.s_addr = htonl(ipv4_l3fwd_fib_route_array[i].ip); + printf("FIB: Adding route %s / %d (%d)\n", + inet_ntop(AF_INET, &in, abuf, sizeof(abuf)), + ipv4_l3fwd_fib_route_array[i].depth, + ipv4_l3fwd_fib_route_array[i].if_out); + } + + /* ipv6 omitted from this example for brevity */ + } + #endif + Packet Forwarding for Hash-based Lookups ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -380,6 +438,35 @@ for LPM-based lookups is done by the get_ipv4_dst_port() function below: return ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct, rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0)? next_hop : portid); } +Packet Forwarding for FIB-based Lookups +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +The FIB library was designed to process multiple packets at once, it does not have separate functions for single +and bulk lookups. ``rte_fib_lookup_bulk`` is used for ipv4 lookups and ``rte_fib6_lookup_bulk`` for ipv6. +An example of a FIB lookup function can be seen below: + +.. code-block:: c + + static inline uint16_t + fib_get_ipv4_dst_ports(struct rte_fib *ipv4_l3fwd_lookup_struct, uint32_t *ipv4_addrs, uint64_t *next_hops, uint16_t portid, int nb_pkts) + { + uint16_t hops[nb_pkts]; + + rte_fib_lookup_bulk(ipv4_l3fwd_lookup_struct, ipv4_addrs, next_hops, nb_pkts); + + /* + * If FIB has returned its default value for an unknown IP address set it to the portid supplied. + * FIB uses uint64_t for hops but l3fwd uses uint16_t so the values are cast. + */ + + for (i = 0; i < nb_pkts; i++) + (next_hops[i]==FIB_DEFAULT_HOP) ? (hops[i] = (uint16_t)portid) : (hops[i] = (uint16_t)next_hop[i]); + + return hops; + } + + /* IPv6 example omitted for brevity */ + Eventdev Driver Initialization ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Eventdev driver initialization is same as L2 forwarding eventdev application.