* If the numbers match, 'txq_needs_locking' is false, otherwise it is
* true and we will take a spinlock on transmission */
int real_n_txq;
+ int real_n_rxq;
bool txq_needs_locking;
- /* Spinlock for vhost transmission. Other DPDK devices use spinlocks in
- * dpdk_tx_queue */
- rte_spinlock_t vhost_tx_lock;
-
/* virtio-net structure for vhost device */
OVSRCU_TYPE(struct virtio_net *) virtio_dev;
static int
vhost_construct_helper(struct netdev *netdev_) OVS_REQUIRES(dpdk_mutex)
{
- struct netdev_dpdk *netdev = netdev_dpdk_cast(netdev_);
-
if (rte_eal_init_ret) {
return rte_eal_init_ret;
}
- rte_spinlock_init(&netdev->vhost_tx_lock);
return netdev_dpdk_init(netdev_, -1, DPDK_DEV_VHOST);
}
}
static int
-netdev_dpdk_vhost_set_multiq(struct netdev *netdev_, unsigned int n_txq,
+netdev_dpdk_vhost_cuse_set_multiq(struct netdev *netdev_, unsigned int n_txq,
unsigned int n_rxq)
{
struct netdev_dpdk *netdev = netdev_dpdk_cast(netdev_);
netdev->up.n_txq = n_txq;
netdev->real_n_txq = 1;
netdev->up.n_rxq = 1;
+ netdev->txq_needs_locking = netdev->real_n_txq != netdev->up.n_txq;
+
+ ovs_mutex_unlock(&netdev->mutex);
+ ovs_mutex_unlock(&dpdk_mutex);
+
+ return err;
+}
+
+static int
+netdev_dpdk_vhost_set_multiq(struct netdev *netdev_, unsigned int n_txq,
+ unsigned int n_rxq)
+{
+ struct netdev_dpdk *netdev = netdev_dpdk_cast(netdev_);
+ int err = 0;
+
+ if (netdev->up.n_txq == n_txq && netdev->up.n_rxq == n_rxq) {
+ return err;
+ }
+
+ ovs_mutex_lock(&dpdk_mutex);
+ ovs_mutex_lock(&netdev->mutex);
+
+ rte_free(netdev->tx_q);
+ netdev->up.n_txq = n_txq;
+ netdev->up.n_rxq = n_rxq;
+ netdev_dpdk_alloc_txq(netdev, netdev->up.n_txq);
ovs_mutex_unlock(&netdev->mutex);
ovs_mutex_unlock(&dpdk_mutex);
struct netdev *netdev = rx->up.netdev;
struct netdev_dpdk *vhost_dev = netdev_dpdk_cast(netdev);
struct virtio_net *virtio_dev = netdev_dpdk_get_virtio(vhost_dev);
- int qid = 1;
+ int qid = rxq_->queue_id;
uint16_t nb_rx = 0;
if (OVS_UNLIKELY(!is_vhost_running(virtio_dev))) {
return EAGAIN;
}
- nb_rx = rte_vhost_dequeue_burst(virtio_dev, qid,
+ if (rxq_->queue_id >= vhost_dev->real_n_rxq) {
+ return EOPNOTSUPP;
+ }
+
+ nb_rx = rte_vhost_dequeue_burst(virtio_dev, qid * VIRTIO_QNUM + VIRTIO_TXQ,
vhost_dev->dpdk_mp->mp,
(struct rte_mbuf **)packets,
NETDEV_MAX_BURST);
}
static void
-__netdev_dpdk_vhost_send(struct netdev *netdev, struct dp_packet **pkts,
- int cnt, bool may_steal)
+__netdev_dpdk_vhost_send(struct netdev *netdev, int qid,
+ struct dp_packet **pkts, int cnt,
+ bool may_steal)
{
struct netdev_dpdk *vhost_dev = netdev_dpdk_cast(netdev);
struct virtio_net *virtio_dev = netdev_dpdk_get_virtio(vhost_dev);
goto out;
}
- /* There is vHost TX single queue, So we need to lock it for TX. */
- rte_spinlock_lock(&vhost_dev->vhost_tx_lock);
+ if (vhost_dev->txq_needs_locking) {
+ qid = qid % vhost_dev->real_n_txq;
+ rte_spinlock_lock(&vhost_dev->tx_q[qid].tx_lock);
+ }
do {
+ int vhost_qid = qid * VIRTIO_QNUM + VIRTIO_RXQ;
unsigned int tx_pkts;
- tx_pkts = rte_vhost_enqueue_burst(virtio_dev, VIRTIO_RXQ,
+ tx_pkts = rte_vhost_enqueue_burst(virtio_dev, vhost_qid,
cur_pkts, cnt);
if (OVS_LIKELY(tx_pkts)) {
/* Packets have been sent.*/
* Unable to enqueue packets to vhost interface.
* Check available entries before retrying.
*/
- while (!rte_vring_available_entries(virtio_dev, VIRTIO_RXQ)) {
+ while (!rte_vring_available_entries(virtio_dev, vhost_qid)) {
if (OVS_UNLIKELY((rte_get_timer_cycles() - start) > timeout)) {
expired = 1;
break;
}
}
} while (cnt);
- rte_spinlock_unlock(&vhost_dev->vhost_tx_lock);
+
+ if (vhost_dev->txq_needs_locking) {
+ rte_spinlock_unlock(&vhost_dev->tx_q[qid].tx_lock);
+ }
rte_spinlock_lock(&vhost_dev->stats_lock);
netdev_dpdk_vhost_update_tx_counters(&vhost_dev->stats, pkts, total_pkts,
}
if (dev->type == DPDK_DEV_VHOST) {
- __netdev_dpdk_vhost_send(netdev, (struct dp_packet **) mbufs, newcnt, true);
+ __netdev_dpdk_vhost_send(netdev, qid, (struct dp_packet **) mbufs, newcnt, true);
} else {
dpdk_queue_pkts(dev, qid, mbufs, newcnt);
dpdk_queue_flush(dev, qid);
}
static int
-netdev_dpdk_vhost_send(struct netdev *netdev, int qid OVS_UNUSED, struct dp_packet **pkts,
+netdev_dpdk_vhost_send(struct netdev *netdev, int qid, struct dp_packet **pkts,
int cnt, bool may_steal)
{
if (OVS_UNLIKELY(pkts[0]->source != DPBUF_DPDK)) {
}
}
} else {
- __netdev_dpdk_vhost_send(netdev, pkts, cnt, may_steal);
+ __netdev_dpdk_vhost_send(netdev, qid, pkts, cnt, may_steal);
}
return 0;
}
static void
set_irq_status(struct virtio_net *dev)
{
- dev->virtqueue[VIRTIO_RXQ]->used->flags = VRING_USED_F_NO_NOTIFY;
- dev->virtqueue[VIRTIO_TXQ]->used->flags = VRING_USED_F_NO_NOTIFY;
+ uint32_t i;
+ uint64_t idx;
+
+ for (i = 0; i < dev->virt_qp_nb; i++) {
+ idx = i * VIRTIO_QNUM;
+ rte_vhost_enable_guest_notification(dev, idx + VIRTIO_RXQ, 0);
+ rte_vhost_enable_guest_notification(dev, idx + VIRTIO_TXQ, 0);
+ }
+}
+
+
+static int
+netdev_dpdk_vhost_set_queues(struct netdev_dpdk *netdev, struct virtio_net *dev)
+{
+ uint32_t qp_num;
+
+ qp_num = dev->virt_qp_nb;
+ if (qp_num > netdev->up.n_rxq) {
+ VLOG_ERR("vHost Device '%s' %"PRIu64" can't be added - "
+ "too many queues %d > %d", dev->ifname, dev->device_fh,
+ qp_num, netdev->up.n_rxq);
+ return -1;
+ }
+
+ netdev->real_n_rxq = qp_num;
+ netdev->real_n_txq = qp_num;
+ if (netdev->up.n_txq > netdev->real_n_txq) {
+ netdev->txq_needs_locking = true;
+ } else {
+ netdev->txq_needs_locking = false;
+ }
+
+ return 0;
}
/*
LIST_FOR_EACH(netdev, list_node, &dpdk_list) {
if (strncmp(dev->ifname, netdev->vhost_id, IF_NAME_SZ) == 0) {
ovs_mutex_lock(&netdev->mutex);
+ if (netdev_dpdk_vhost_set_queues(netdev, dev)) {
+ ovs_mutex_unlock(&netdev->mutex);
+ ovs_mutex_unlock(&dpdk_mutex);
+ return -1;
+ }
ovsrcu_set(&netdev->virtio_dev, dev);
- ovs_mutex_unlock(&netdev->mutex);
exists = true;
dev->flags |= VIRTIO_DEV_RUNNING;
/* Disable notifications. */
set_irq_status(dev);
+ ovs_mutex_unlock(&netdev->mutex);
break;
}
}
dpdk_vhost_cuse_class_init,
netdev_dpdk_vhost_cuse_construct,
netdev_dpdk_vhost_destruct,
- netdev_dpdk_vhost_set_multiq,
+ netdev_dpdk_vhost_cuse_set_multiq,
netdev_dpdk_vhost_send,
netdev_dpdk_vhost_get_carrier,
netdev_dpdk_vhost_get_stats,