diff options
Diffstat (limited to 'lib/librte_vhost/vhost.c')
| -rw-r--r-- | lib/librte_vhost/vhost.c | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c index 1f565fbb..0b6aa1cc 100644 --- a/lib/librte_vhost/vhost.c +++ b/lib/librte_vhost/vhost.c @@ -40,6 +40,7 @@ #include <numaif.h> #endif +#include <rte_errno.h> #include <rte_ethdev.h> #include <rte_log.h> #include <rte_string_fns.h> @@ -272,7 +273,7 @@ rte_vhost_get_mtu(int vid, uint16_t *mtu) if (!(dev->flags & VIRTIO_DEV_READY)) return -EAGAIN; - if (!(dev->features & VIRTIO_NET_F_MTU)) + if (!(dev->features & (1ULL << VIRTIO_NET_F_MTU))) return -ENOTSUP; *mtu = dev->mtu; @@ -295,7 +296,8 @@ rte_vhost_get_numa_node(int vid) MPOL_F_NODE | MPOL_F_ADDR); if (ret < 0) { RTE_LOG(ERR, VHOST_CONFIG, - "(%d) failed to query numa node: %d\n", vid, ret); + "(%d) failed to query numa node: %s\n", + vid, rte_strerror(errno)); return -1; } @@ -475,3 +477,29 @@ rte_vhost_log_used_vring(int vid, uint16_t vring_idx, vhost_log_used_vring(dev, vq, offset, len); } + +uint32_t +rte_vhost_rx_queue_count(int vid, uint16_t qid) +{ + struct virtio_net *dev; + struct vhost_virtqueue *vq; + + dev = get_device(vid); + if (dev == NULL) + return 0; + + if (unlikely(qid >= dev->nr_vring || (qid & 1) == 0)) { + RTE_LOG(ERR, VHOST_DATA, "(%d) %s: invalid virtqueue idx %d.\n", + dev->vid, __func__, qid); + return 0; + } + + vq = dev->virtqueue[qid]; + if (vq == NULL) + return 0; + + if (unlikely(vq->enabled == 0 || vq->avail == NULL)) + return 0; + + return *((volatile uint16_t *)&vq->avail->idx) - vq->last_avail_idx; +} |