From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id 55F748D9F for ; Fri, 18 Sep 2015 17:09:44 +0200 (CEST) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 18 Sep 2015 08:09:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,553,1437462000"; d="scan'208";a="792565812" Received: from yliu-dev.sh.intel.com ([10.239.66.60]) by fmsmga001.fm.intel.com with ESMTP; 18 Sep 2015 08:09:42 -0700 From: Yuanhan Liu To: dev@dpdk.org Date: Fri, 18 Sep 2015 23:10:53 +0800 Message-Id: <1442589061-19225-5-git-send-email-yuanhan.liu@linux.intel.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1442589061-19225-1-git-send-email-yuanhan.liu@linux.intel.com> References: <1442589061-19225-1-git-send-email-yuanhan.liu@linux.intel.com> Cc: "Michael S. Tsirkin" Subject: [dpdk-dev] [PATCH v5 resend 04/12] vhost: rxtx: prepare work for multiple queue support 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: , X-List-Received-Date: Fri, 18 Sep 2015 15:09:45 -0000 From: Changchun Ouyang Do not use VIRTIO_RXQ or VIRTIO_TXQ anymore; use the queue_id, instead, which will be set to a proper value for a specific queue when we have multiple queue support enabled. For now, queue_id is still set with VIRTIO_RXQ or VIRTIO_TXQ, so it should not break anything. Signed-off-by: Changchun Ouyang Signed-off-by: Yuanhan Liu --- lib/librte_vhost/vhost_rxtx.c | 46 ++++++++++++++++++++++++++++++------------- 1 file changed, 32 insertions(+), 14 deletions(-) diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c index b2b2bcc..a4ab6ca 100644 --- a/lib/librte_vhost/vhost_rxtx.c +++ b/lib/librte_vhost/vhost_rxtx.c @@ -42,6 +42,16 @@ #define MAX_PKT_BURST 32 +static inline int __attribute__((always_inline)) +is_valid_virt_queue_idx(uint32_t virtq_idx, int is_tx, uint32_t max_qp_idx) +{ + if ((is_tx ^ (virtq_idx & 0x1)) || + (virtq_idx >= max_qp_idx * VIRTIO_QNUM)) + return 0; + + return 1; +} + /** * This function adds buffers to the virtio devices RX virtqueue. Buffers can * be received from the physical port or from another virtio device. A packet @@ -68,12 +78,14 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id, uint8_t success = 0; LOG_DEBUG(VHOST_DATA, "(%"PRIu64") virtio_dev_rx()\n", dev->device_fh); - if (unlikely(queue_id != VIRTIO_RXQ)) { - LOG_DEBUG(VHOST_DATA, "mq isn't supported in this version.\n"); + if (unlikely(!is_valid_virt_queue_idx(queue_id, 0, dev->virt_qp_nb))) { + RTE_LOG(ERR, VHOST_DATA, + "%s (%"PRIu64"): virtqueue idx:%d invalid.\n", + __func__, dev->device_fh, queue_id); return 0; } - vq = dev->virtqueue[VIRTIO_RXQ]; + vq = dev->virtqueue[queue_id]; count = (count > MAX_PKT_BURST) ? MAX_PKT_BURST : count; /* @@ -235,8 +247,9 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id, } static inline uint32_t __attribute__((always_inline)) -copy_from_mbuf_to_vring(struct virtio_net *dev, uint16_t res_base_idx, - uint16_t res_end_idx, struct rte_mbuf *pkt) +copy_from_mbuf_to_vring(struct virtio_net *dev, uint32_t queue_id, + uint16_t res_base_idx, uint16_t res_end_idx, + struct rte_mbuf *pkt) { uint32_t vec_idx = 0; uint32_t entry_success = 0; @@ -264,7 +277,7 @@ copy_from_mbuf_to_vring(struct virtio_net *dev, uint16_t res_base_idx, * Convert from gpa to vva * (guest physical addr -> vhost virtual addr) */ - vq = dev->virtqueue[VIRTIO_RXQ]; + vq = dev->virtqueue[queue_id]; vb_addr = gpa_to_vva(dev, vq->buf_vec[vec_idx].buf_addr); vb_hdr_addr = vb_addr; @@ -464,11 +477,14 @@ virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id, LOG_DEBUG(VHOST_DATA, "(%"PRIu64") virtio_dev_merge_rx()\n", dev->device_fh); - if (unlikely(queue_id != VIRTIO_RXQ)) { - LOG_DEBUG(VHOST_DATA, "mq isn't supported in this version.\n"); + if (unlikely(!is_valid_virt_queue_idx(queue_id, 0, dev->virt_qp_nb))) { + RTE_LOG(ERR, VHOST_DATA, + "%s (%"PRIu64"): virtqueue idx:%d invalid.\n", + __func__, dev->device_fh, queue_id); + return 0; } - vq = dev->virtqueue[VIRTIO_RXQ]; + vq = dev->virtqueue[queue_id]; count = RTE_MIN((uint32_t)MAX_PKT_BURST, count); if (count == 0) @@ -509,8 +525,8 @@ virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id, res_cur_idx); } while (success == 0); - entry_success = copy_from_mbuf_to_vring(dev, res_base_idx, - res_cur_idx, pkts[pkt_idx]); + entry_success = copy_from_mbuf_to_vring(dev, queue_id, + res_base_idx, res_cur_idx, pkts[pkt_idx]); rte_compiler_barrier(); @@ -559,12 +575,14 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id, uint16_t free_entries, entry_success = 0; uint16_t avail_idx; - if (unlikely(queue_id != VIRTIO_TXQ)) { - LOG_DEBUG(VHOST_DATA, "mq isn't supported in this version.\n"); + if (unlikely(!is_valid_virt_queue_idx(queue_id, 1, dev->virt_qp_nb))) { + RTE_LOG(ERR, VHOST_DATA, + "%s (%"PRIu64"): virtqueue idx:%d invalid.\n", + __func__, dev->device_fh, queue_id); return 0; } - vq = dev->virtqueue[VIRTIO_TXQ]; + vq = dev->virtqueue[queue_id]; avail_idx = *((volatile uint16_t *)&vq->avail->idx); /* If there are no available buffers then return. */ -- 1.9.0