From patchwork Tue Jan 17 07:10:25 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jianfeng Tan X-Patchwork-Id: 19494 X-Patchwork-Delegate: yuanhan.liu@linux.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 E561E5320; Tue, 17 Jan 2017 08:10:25 +0100 (CET) Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by dpdk.org (Postfix) with ESMTP id 7D521106A for ; Tue, 17 Jan 2017 08:09:56 +0100 (CET) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga104.jf.intel.com with ESMTP; 16 Jan 2017 23:09:56 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.33,243,1477983600"; d="scan'208"; a="1113750162" Received: from dpdk06.sh.intel.com ([10.239.129.195]) by fmsmga002.fm.intel.com with ESMTP; 16 Jan 2017 23:09:54 -0800 From: Jianfeng Tan To: dev@dpdk.org Cc: yuanhan.liu@linux.intel.com, stephen@networkplumber.org, lei.a.yao@intel.com, Jianfeng Tan Date: Tue, 17 Jan 2017 07:10:25 +0000 Message-Id: <1484637030-106261-6-git-send-email-jianfeng.tan@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1484637030-106261-1-git-send-email-jianfeng.tan@intel.com> References: <1480810702-114815-1-git-send-email-jianfeng.tan@intel.com> <1484637030-106261-1-git-send-email-jianfeng.tan@intel.com> Subject: [dpdk-dev] [PATCH v4 05/10] net/virtio: add Rx queue intr enable/disable functions 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" This patch implements interrupt enable/disable functions for each Rx queue. And we rely on flags of avail queue as the hint for virtio device to interrupt virtio driver or not. Signed-off-by: Jianfeng Tan Tested-by: Lei Yao --- drivers/net/virtio/virtio_ethdev.c | 22 ++++++++++++++++++++++ drivers/net/virtio/virtqueue.c | 11 ----------- drivers/net/virtio/virtqueue.h | 16 +++++++++++++++- 3 files changed, 37 insertions(+), 12 deletions(-) diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c index bec2be2..4224d17 100644 --- a/drivers/net/virtio/virtio_ethdev.c +++ b/drivers/net/virtio/virtio_ethdev.c @@ -717,6 +717,26 @@ virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) return 0; } +static int +virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) +{ + struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; + struct virtqueue *vq = rxvq->vq; + + virtqueue_enable_intr(vq); + return 0; +} + +static int +virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) +{ + struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; + struct virtqueue *vq = rxvq->vq; + + virtqueue_disable_intr(vq); + return 0; +} + /* * dev_ops for virtio, bare necessities for basic operation */ @@ -738,6 +758,8 @@ static const struct eth_dev_ops virtio_eth_dev_ops = { .xstats_reset = virtio_dev_stats_reset, .link_update = virtio_dev_link_update, .rx_queue_setup = virtio_dev_rx_queue_setup, + .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, + .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, .rx_queue_release = virtio_dev_queue_release, .rx_descriptor_done = virtio_dev_rx_queue_done, .tx_queue_setup = virtio_dev_tx_queue_setup, diff --git a/drivers/net/virtio/virtqueue.c b/drivers/net/virtio/virtqueue.c index 7f60e3e..9ad77b8 100644 --- a/drivers/net/virtio/virtqueue.c +++ b/drivers/net/virtio/virtqueue.c @@ -38,17 +38,6 @@ #include "virtio_logs.h" #include "virtio_pci.h" -void -virtqueue_disable_intr(struct virtqueue *vq) -{ - /* - * Set VRING_AVAIL_F_NO_INTERRUPT to hint host - * not to interrupt when it consumes packets - * Note: this is only considered a hint to the host - */ - vq->vq_ring.avail->flags |= VRING_AVAIL_F_NO_INTERRUPT; -} - /* * Two types of mbuf to be cleaned: * 1) mbuf that has been consumed by backend but not used by virtio. diff --git a/drivers/net/virtio/virtqueue.h b/drivers/net/virtio/virtqueue.h index b1070e0..f9e3736 100644 --- a/drivers/net/virtio/virtqueue.h +++ b/drivers/net/virtio/virtqueue.h @@ -274,7 +274,21 @@ vring_desc_init(struct vring_desc *dp, uint16_t n) /** * Tell the backend not to interrupt us. */ -void virtqueue_disable_intr(struct virtqueue *vq); +static inline void +virtqueue_disable_intr(struct virtqueue *vq) +{ + vq->vq_ring.avail->flags |= VRING_AVAIL_F_NO_INTERRUPT; +} + +/** + * Tell the backend to interrupt us. + */ +static inline void +virtqueue_enable_intr(struct virtqueue *vq) +{ + vq->vq_ring.avail->flags &= (~VRING_AVAIL_F_NO_INTERRUPT); +} + /** * Dump virtqueue internal structures, for debug purpose only. */