[dpdk-dev] [PATCH] lib/librte_vhost: exchange kickfd and callfd to avoid confusion

[Huawei Xie <huawei.xie@intel.com>]

Previous vhost implementation wrongly name kickfd as callfd and callfd as kickfd.
It is functional correct, but causes confusion.

Signed-off-by: Huawei Xie <huawei.xie@intel.com>
---
 examples/vhost/main.c                         |  6 +++---
 lib/librte_vhost/rte_virtio_net.h             |  4 ++--
 lib/librte_vhost/vhost_rxtx.c                 |  6 +++---
 lib/librte_vhost/vhost_user/virtio-net-user.c | 12 ++++++------
 lib/librte_vhost/virtio-net.c                 | 12 ++++++------
 5 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/examples/vhost/main.c b/examples/vhost/main.c
index 334e2fe..61ea671 100644
--- a/examples/vhost/main.c
+++ b/examples/vhost/main.c
@@ -1434,7 +1434,7 @@ put_desc_to_used_list_zcp(struct vhost_virtqueue *vq, uint16_t desc_idx)
 
 	/* Kick the guest if necessary. */
 	if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT))
-		eventfd_write((int)vq->kickfd, 1);
+		eventfd_write((int)vq->callfd, 1);
 }
 
 /*
@@ -1627,7 +1627,7 @@ txmbuf_clean_zcp(struct virtio_net *dev, struct vpool *vpool)
 
 	/* Kick guest if required. */
 	if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT))
-		eventfd_write((int)vq->kickfd, 1);
+		eventfd_write((int)vq->callfd, 1);
 
 	return 0;
 }
@@ -1775,7 +1775,7 @@ virtio_dev_rx_zcp(struct virtio_net *dev, struct rte_mbuf **pkts,
 
 	/* Kick the guest if necessary. */
 	if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT))
-		eventfd_write((int)vq->kickfd, 1);
+		eventfd_write((int)vq->callfd, 1);
 
 	return count;
 }
diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h
index 611a3d4..2fc1c44 100644
--- a/lib/librte_vhost/rte_virtio_net.h
+++ b/lib/librte_vhost/rte_virtio_net.h
@@ -86,8 +86,8 @@ struct vhost_virtqueue {
 	uint16_t		vhost_hlen;		/**< Vhost header length (varies depending on RX merge buffers. */
 	volatile uint16_t	last_used_idx;		/**< Last index used on the available ring */
 	volatile uint16_t	last_used_idx_res;	/**< Used for multiple devices reserving buffers. */
-	eventfd_t		callfd;			/**< Currently unused as polling mode is enabled. */
-	eventfd_t		kickfd;			/**< Used to notify the guest (trigger interrupt). */
+	eventfd_t		callfd;			/**< Used to notify the guest (trigger interrupt). */
+	eventfd_t		kickfd;			/**< Currently unused as polling mode is enabled. */
 	struct buf_vector	buf_vec[BUF_VECTOR_MAX];	/**< for scatter RX. */
 } __rte_cache_aligned;
 
diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
index c7c9550..535c7a1 100644
--- a/lib/librte_vhost/vhost_rxtx.c
+++ b/lib/librte_vhost/vhost_rxtx.c
@@ -180,7 +180,7 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
 
 	/* Kick the guest if necessary. */
 	if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT))
-		eventfd_write((int)vq->kickfd, 1);
+		eventfd_write((int)vq->callfd, 1);
 	return count;
 }
 
@@ -507,7 +507,7 @@ virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id,
 
 		/* Kick the guest if necessary. */
 		if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT))
-			eventfd_write((int)vq->kickfd, 1);
+			eventfd_write((int)vq->callfd, 1);
 	}
 
 	return count;
@@ -725,6 +725,6 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
 	vq->used->idx += entry_success;
 	/* Kick guest if required. */
 	if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT))
-		eventfd_write((int)vq->kickfd, 1);
+		eventfd_write((int)vq->callfd, 1);
 	return entry_success;
 }
diff --git a/lib/librte_vhost/vhost_user/virtio-net-user.c b/lib/librte_vhost/vhost_user/virtio-net-user.c
index 97c5177..e0c7394 100644
--- a/lib/librte_vhost/vhost_user/virtio-net-user.c
+++ b/lib/librte_vhost/vhost_user/virtio-net-user.c
@@ -286,13 +286,13 @@ user_get_vring_base(struct vhost_device_ctx ctx,
 	 * sent and only sent in vhost_vring_stop.
 	 * TODO: cleanup the vring, it isn't usable since here.
 	 */
-	if (((int)dev->virtqueue[VIRTIO_RXQ]->callfd) >= 0) {
-		close(dev->virtqueue[VIRTIO_RXQ]->callfd);
-		dev->virtqueue[VIRTIO_RXQ]->callfd = (eventfd_t)-1;
+	if (((int)dev->virtqueue[VIRTIO_RXQ]->kickfd) >= 0) {
+		close(dev->virtqueue[VIRTIO_RXQ]->kickfd);
+		dev->virtqueue[VIRTIO_RXQ]->kickfd = (eventfd_t)-1;
 	}
-	if (((int)dev->virtqueue[VIRTIO_TXQ]->callfd) >= 0) {
-		close(dev->virtqueue[VIRTIO_TXQ]->callfd);
-		dev->virtqueue[VIRTIO_TXQ]->callfd = (eventfd_t)-1;
+	if (((int)dev->virtqueue[VIRTIO_TXQ]->kickfd) >= 0) {
+		close(dev->virtqueue[VIRTIO_TXQ]->kickfd);
+		dev->virtqueue[VIRTIO_TXQ]->kickfd = (eventfd_t)-1;
 	}
 
 	return 0;
diff --git a/lib/librte_vhost/virtio-net.c b/lib/librte_vhost/virtio-net.c
index 20567ff..6917fcf 100644
--- a/lib/librte_vhost/virtio-net.c
+++ b/lib/librte_vhost/virtio-net.c
@@ -595,10 +595,10 @@ set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
 	/* file->index refers to the queue index. The txq is 1, rxq is 0. */
 	vq = dev->virtqueue[file->index];
 
-	if ((int)vq->kickfd >= 0)
-		close((int)vq->kickfd);
+	if ((int)vq->callfd >= 0)
+		close((int)vq->callfd);
 
-	vq->kickfd = file->fd;
+	vq->callfd = file->fd;
 
 	return 0;
 }
@@ -621,10 +621,10 @@ set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
 	/* file->index refers to the queue index. The txq is 1, rxq is 0. */
 	vq = dev->virtqueue[file->index];
 
-	if ((int)vq->callfd >= 0)
-		close((int)vq->callfd);
+	if ((int)vq->kickfd >= 0)
+		close((int)vq->kickfd);
 
-	vq->callfd = file->fd;
+	vq->kickfd = file->fd;
 
 	return 0;
 }
-- 
1.8.1.4