From patchwork Mon Sep 19 18:50:29 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nelson Escobar X-Patchwork-Id: 15936 X-Patchwork-Delegate: bruce.richardson@intel.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 49C385398; Mon, 19 Sep 2016 20:50:38 +0200 (CEST) Received: from alln-iport-8.cisco.com (alln-iport-8.cisco.com [173.37.142.95]) by dpdk.org (Postfix) with ESMTP id CF7BA475D for ; Mon, 19 Sep 2016 20:50:36 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1841; q=dns/txt; s=iport; t=1474311037; x=1475520637; h=from:to:cc:subject:date:message-id; bh=gzN7eHzC/kyA90DZhLggUIGYpAPgV0bt0cBcrtM8mT4=; b=iGMthWcXpgjj5BGmzcVQYCwa224LsNVjsIiyDfQlqpGC3h13yx7IF4cX LR39GoE/2O6uZF1G7JAJAO+ugqZHHxmAemupZhIIU6iOHufsWUpSL6TWr KnMe/DmYaL/UEh1JqvPJcdy0AllBYLdkbRfRrKwEgXCXzCzfxhDQVKEhE w=; X-IronPort-AV: E=Sophos;i="5.30,363,1470700800"; d="scan'208";a="325355688" Received: from rcdn-core-10.cisco.com ([173.37.93.146]) by alln-iport-8.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Sep 2016 18:50:36 +0000 Received: from cisco.com (savbu-usnic-a.cisco.com [10.193.184.48]) by rcdn-core-10.cisco.com (8.14.5/8.14.5) with ESMTP id u8JIoZ8u016555; Mon, 19 Sep 2016 18:50:36 GMT Received: by cisco.com (Postfix, from userid 412739) id BA6963FAAE0F; Mon, 19 Sep 2016 11:50:35 -0700 (PDT) From: Nelson Escobar To: dev@dpdk.org Cc: bruce.richardson@intel.com, Nelson Escobar Date: Mon, 19 Sep 2016 11:50:29 -0700 Message-Id: <1474311029-20055-1-git-send-email-neescoba@cisco.com> X-Mailer: git-send-email 2.7.0 Subject: [dpdk-dev] [PATCH] net/enic: add support for Rx queue count function X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Add support to enic for rte_eth_rx_queue_count(). Signed-off-by: Nelson Escobar Reviewed-by: John Daley --- drivers/net/enic/enic_ethdev.c | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c index 44105d6..d20637f 100644 --- a/drivers/net/enic/enic_ethdev.c +++ b/drivers/net/enic/enic_ethdev.c @@ -260,6 +260,35 @@ static void enicpmd_dev_rx_queue_release(void *rxq) enic_free_rq(rxq); } +static uint32_t enicpmd_dev_rx_queue_count(struct rte_eth_dev *dev, + uint16_t rx_queue_id) +{ + struct enic *enic = pmd_priv(dev); + uint32_t queue_count = 0; + struct vnic_cq *cq; + uint32_t cq_tail; + uint16_t cq_idx; + int rq_num; + + if (rx_queue_id >= dev->data->nb_rx_queues) { + dev_err(enic, "Invalid RX queue id=%d", rx_queue_id); + return 0; + } + + rq_num = enic_sop_rq(rx_queue_id); + cq = &enic->cq[enic_cq_rq(enic, rq_num)]; + cq_idx = cq->to_clean; + + cq_tail = ioread32(&cq->ctrl->cq_tail); + + if (cq_tail < cq_idx) + cq_tail += cq->ring.desc_count; + + queue_count = cq_tail - cq_idx; + + return queue_count; +} + static int enicpmd_dev_rx_queue_setup(struct rte_eth_dev *eth_dev, uint16_t queue_idx, uint16_t nb_desc, @@ -560,7 +589,7 @@ static const struct eth_dev_ops enicpmd_eth_dev_ops = { .tx_queue_stop = enicpmd_dev_tx_queue_stop, .rx_queue_setup = enicpmd_dev_rx_queue_setup, .rx_queue_release = enicpmd_dev_rx_queue_release, - .rx_queue_count = NULL, + .rx_queue_count = enicpmd_dev_rx_queue_count, .rx_descriptor_done = NULL, .tx_queue_setup = enicpmd_dev_tx_queue_setup, .tx_queue_release = enicpmd_dev_tx_queue_release,