From patchwork Tue May 21 21:39:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ajit Khaparde X-Patchwork-Id: 53594 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 2F3A15911; Tue, 21 May 2019 23:40:06 +0200 (CEST) Received: from rnd-relay.smtp.broadcom.com (rnd-relay.smtp.broadcom.com [192.19.229.170]) by dpdk.org (Postfix) with ESMTP id D89AE4CAB for ; Tue, 21 May 2019 23:39:57 +0200 (CEST) Received: from nis-sj1-27.broadcom.com (nis-sj1-27.lvn.broadcom.net [10.75.144.136]) by rnd-relay.smtp.broadcom.com (Postfix) with ESMTP id BDF3830C0D0; Tue, 21 May 2019 14:39:55 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.10.3 rnd-relay.smtp.broadcom.com BDF3830C0D0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=broadcom.com; s=dkimrelay; t=1558474795; bh=KQgLVxLuhwWbuTm14T3Z4CgJypsiegRuVKNYjR3eSFg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L7YxNWkiZ3OZvgVuROKp/vC9mFU/vE0C2IUSgxjssUi5RDd++UJscKxP4b3nL4gdM ZArokVSGi76R46EdFIc579QxGcjA4pS+N8ufS5ZFKEfeXPOAGmP0gxJKMAR5aXCHKH cAjewe9oQj3/DtMWDhibNv4q9YHM6/A6Qak7xlZw= Received: from C02VPB22HTD6.wifi.broadcom.net (c02vpb22htd6.wifi.broadcom.net [10.69.74.102]) by nis-sj1-27.broadcom.com (Postfix) with ESMTP id 7B877AC07C3; Tue, 21 May 2019 14:39:55 -0700 (PDT) From: Ajit Khaparde To: dev@dpdk.org Cc: ferruh.yigit@intel.com, Lance Richardson Date: Tue, 21 May 2019 14:39:44 -0700 Message-Id: <20190521213953.25425-3-ajit.khaparde@broadcom.com> X-Mailer: git-send-email 2.20.1 (Apple Git-117) In-Reply-To: <20190521213953.25425-1-ajit.khaparde@broadcom.com> References: <20190521213953.25425-1-ajit.khaparde@broadcom.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH 02/11] net/bnxt: compute and store scattered RX status X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 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" From: Lance Richardson In preparation for a bnxt vector-mode driver, compute and store scattered_rx status for the device when started. Signed-off-by: Lance Richardson Reviewed-by: Ajit Khaparde Reviewed-by: Maxime Coquelin --- drivers/net/bnxt/bnxt_ethdev.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c index da0de211d..e0e0b72c6 100644 --- a/drivers/net/bnxt/bnxt_ethdev.c +++ b/drivers/net/bnxt/bnxt_ethdev.c @@ -624,6 +624,27 @@ static int bnxt_dev_lsc_intr_setup(struct rte_eth_dev *eth_dev) return 0; } +/* + * Determine whether the current configuration requires support for scattered + * receive; return 1 if scattered receive is required and 0 if not. + */ +static int bnxt_scattered_rx(struct rte_eth_dev *eth_dev) +{ + uint16_t buf_size; + int i; + + for (i = 0; i < eth_dev->data->nb_rx_queues; i++) { + struct bnxt_rx_queue *rxq = eth_dev->data->rx_queues[i]; + + buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mb_pool) - + RTE_PKTMBUF_HEADROOM); + if (eth_dev->data->dev_conf.rxmode.max_rx_pkt_len + + VLAN_TAG_SIZE * BNXT_NUM_VLANS > buf_size) + return 1; + } + return 0; +} + static int bnxt_dev_start_op(struct rte_eth_dev *eth_dev) { struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private; @@ -642,6 +663,8 @@ static int bnxt_dev_start_op(struct rte_eth_dev *eth_dev) if (rc) goto error; + eth_dev->data->scattered_rx = bnxt_scattered_rx(eth_dev); + bnxt_link_update_op(eth_dev, 1); if (rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER)