From patchwork Wed Apr 20 08:16:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Feifei Wang X-Patchwork-Id: 109911 X-Patchwork-Delegate: andrew.rybchenko@oktetlabs.ru 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 2B7ECA00BE; Wed, 20 Apr 2022 10:17:31 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 5CE7742801; Wed, 20 Apr 2022 10:17:15 +0200 (CEST) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mails.dpdk.org (Postfix) with ESMTP id F020D427FF for ; Wed, 20 Apr 2022 10:17:13 +0200 (CEST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 742621477; Wed, 20 Apr 2022 01:17:13 -0700 (PDT) Received: from net-x86-dell-8268.shanghai.arm.com (net-x86-dell-8268.shanghai.arm.com [10.169.210.114]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 831263F73B; Wed, 20 Apr 2022 01:17:11 -0700 (PDT) From: Feifei Wang To: Cc: dev@dpdk.org, nd@arm.com, Feifei Wang , Honnappa Nagarahalli , Ruifeng Wang Subject: [PATCH v1 5/5] examples/l3fwd: enable direct rearm mode Date: Wed, 20 Apr 2022 16:16:50 +0800 Message-Id: <20220420081650.2043183-6-feifei.wang2@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220420081650.2043183-1-feifei.wang2@arm.com> References: <20220420081650.2043183-1-feifei.wang2@arm.com> MIME-Version: 1.0 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 Enable direct rearm mode. The mapping is decided in the data plane based on the first packet received. Suggested-by: Honnappa Nagarahalli Signed-off-by: Feifei Wang Reviewed-by: Ruifeng Wang Reviewed-by: Honnappa Nagarahalli --- examples/l3fwd/l3fwd_lpm.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/examples/l3fwd/l3fwd_lpm.c b/examples/l3fwd/l3fwd_lpm.c index bec22c44cd..38ffdf4636 100644 --- a/examples/l3fwd/l3fwd_lpm.c +++ b/examples/l3fwd/l3fwd_lpm.c @@ -147,7 +147,7 @@ lpm_main_loop(__rte_unused void *dummy) unsigned lcore_id; uint64_t prev_tsc, diff_tsc, cur_tsc; int i, nb_rx; - uint16_t portid; + uint16_t portid, tx_portid; uint8_t queueid; struct lcore_conf *qconf; const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / @@ -158,6 +158,8 @@ lpm_main_loop(__rte_unused void *dummy) const uint16_t n_rx_q = qconf->n_rx_queue; const uint16_t n_tx_p = qconf->n_tx_port; + int direct_rearm_map[n_rx_q]; + if (n_rx_q == 0) { RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id); return 0; @@ -169,6 +171,7 @@ lpm_main_loop(__rte_unused void *dummy) portid = qconf->rx_queue_list[i].port_id; queueid = qconf->rx_queue_list[i].queue_id; + direct_rearm_map[i] = 0; RTE_LOG(INFO, L3FWD, " -- lcoreid=%u portid=%u rxqueueid=%hhu\n", lcore_id, portid, queueid); @@ -209,6 +212,17 @@ lpm_main_loop(__rte_unused void *dummy) if (nb_rx == 0) continue; + /* Determine the direct rearm mapping based on the first + * packet received on the rx queue + */ + if (direct_rearm_map[i] == 0) { + tx_portid = lpm_get_dst_port(qconf, pkts_burst[0], + portid); + rte_eth_direct_rxrearm_map(portid, queueid, + tx_portid, queueid); + direct_rearm_map[i] = 1; + } + #if defined RTE_ARCH_X86 || defined __ARM_NEON \ || defined RTE_ARCH_PPC_64 l3fwd_lpm_send_packets(nb_rx, pkts_burst,