From: Prashant Bhole <prashantbhole.linux@xxxxxxxxx>
Remove usage of ptr ring of tuntap in vhost_net and remove the
functions exported from tuntap drivers to get ptr ring.
Signed-off-by: Prashant Bhole <prashantbhole.linux@xxxxxxxxx>
---
drivers/net/tap.c | 13 -------------
drivers/net/tun.c | 13 -------------
drivers/vhost/net.c | 31 ++++---------------------------
3 files changed, 4 insertions(+), 53 deletions(-)
diff --git a/drivers/net/tap.c b/drivers/net/tap.c
index 3d0bf382dbbc..27ffd2210375 100644
--- a/drivers/net/tap.c
+++ b/drivers/net/tap.c
@@ -1298,19 +1298,6 @@ struct socket *tap_get_socket(struct file *file)
}
EXPORT_SYMBOL_GPL(tap_get_socket);
-struct ptr_ring *tap_get_ptr_ring(struct file *file)
-{
- struct tap_queue *q;
-
- if (file->f_op != &tap_fops)
- return ERR_PTR(-EINVAL);
- q = file->private_data;
- if (!q)
- return ERR_PTR(-EBADFD);
- return &q->ring;
-}
-EXPORT_SYMBOL_GPL(tap_get_ptr_ring);
-
int tap_queue_resize(struct tap_dev *tap)
{
struct net_device *dev = tap->dev;
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 7d4886f53389..75893921411b 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -3750,19 +3750,6 @@ struct socket *tun_get_socket(struct file *file)
}
EXPORT_SYMBOL_GPL(tun_get_socket);
-struct ptr_ring *tun_get_tx_ring(struct file *file)
-{
- struct tun_file *tfile;
-
- if (file->f_op != &tun_fops)
- return ERR_PTR(-EINVAL);
- tfile = file->private_data;
- if (!tfile)
- return ERR_PTR(-EBADFD);
- return &tfile->tx_ring;
-}
-EXPORT_SYMBOL_GPL(tun_get_tx_ring);
-
module_init(tun_init);
module_exit(tun_cleanup);
MODULE_DESCRIPTION(DRV_DESCRIPTION);
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 5e5c1063606c..0d302efadf44 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -122,7 +122,6 @@ struct vhost_net_virtqueue {
/* Reference counting for outstanding ubufs.
* Protected by vq mutex. Writers must also take device mutex. */
struct vhost_net_ubuf_ref *ubufs;
- struct ptr_ring *rx_ring;
struct vhost_net_buf rxq;
/* Batched XDP buffs */
struct xdp_buff *xdp;
@@ -997,8 +996,9 @@ static int peek_head_len(struct vhost_net_virtqueue *rvq, struct sock *sk)
int len = 0;
unsigned long flags;
- if (rvq->rx_ring)
- return vhost_net_buf_peek(rvq);
+ len = vhost_net_buf_peek(rvq);
+ if (len)
+ return len;
spin_lock_irqsave(&sk->sk_receive_queue.lock, flags);
head = skb_peek(&sk->sk_receive_queue);
@@ -1189,7 +1189,7 @@ static void handle_rx(struct vhost_net *net)
goto out;
}
busyloop_intr = false;
- if (nvq->rx_ring) {
+ if (!vhost_net_buf_is_empty(&nvq->rxq)) {
ctl.cmd = TUN_CMD_PACKET;
ctl.ptr = vhost_net_buf_consume(&nvq->rxq);
msg.msg_control = &ctl;
@@ -1345,7 +1345,6 @@ static int vhost_net_open(struct inode *inode, struct file *f)
n->vqs[i].batched_xdp = 0;
n->vqs[i].vhost_hlen = 0;
n->vqs[i].sock_hlen = 0;
- n->vqs[i].rx_ring = NULL;
vhost_net_buf_init(&n->vqs[i].rxq);
}
vhost_dev_init(dev, vqs, VHOST_NET_VQ_MAX,
@@ -1374,7 +1373,6 @@ static struct socket *vhost_net_stop_vq(struct vhost_net *n,
vhost_net_disable_vq(n, vq);
vq->private_data = NULL;
vhost_net_buf_unproduce(nvq);
- nvq->rx_ring = NULL;
mutex_unlock(&vq->mutex);
return sock;
}
@@ -1470,25 +1468,6 @@ static struct socket *get_raw_socket(int fd)
return ERR_PTR(r);
}
-static struct ptr_ring *get_tap_ptr_ring(int fd)
-{
- struct ptr_ring *ring;
- struct file *file = fget(fd);
-
- if (!file)
- return NULL;
- ring = tun_get_tx_ring(file);
- if (!IS_ERR(ring))
- goto out;
- ring = tap_get_ptr_ring(file);
- if (!IS_ERR(ring))
- goto out;
- ring = NULL;
-out:
- fput(file);
- return ring;
-}
-
static struct socket *get_tap_socket(int fd)
{
struct file *file = fget(fd);
@@ -1572,8 +1551,6 @@ static long vhost_net_set_backend(struct vhost_net *n, unsigned index, int fd)
r = vhost_net_enable_vq(n, vq);
if (r)
goto err_used;
- if (index == VHOST_NET_VQ_RX)
- nvq->rx_ring = get_tap_ptr_ring(fd);
oldubufs = nvq->ubufs;
nvq->ubufs = ubufs;
--
2.21.0
