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62 lines
2.0 KiB
Diff
62 lines
2.0 KiB
Diff
From de873586100d1e41ea64697db33aae163c2d9e5d Mon Sep 17 00:00:00 2001
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From: Gerard Garcia <ggarcia@deic.uab.cat>
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Date: Wed, 10 Aug 2016 17:24:34 +0200
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Subject: [PATCH 14/44] vhost/vsock: drop space available check for TX vq
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Remove unnecessary use of enable/disable callback notifications
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and the incorrect more space available check.
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The virtio_transport_tx_work handles when the TX virtqueue
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has more buffers available.
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Signed-off-by: Gerard Garcia <ggarcia@deic.uab.cat>
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Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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(cherry picked from commit 21bc54fc0cdc31de72b57d2b3c79cf9c2b83cf39)
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---
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net/vmw_vsock/virtio_transport.c | 10 +++-------
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1 file changed, 3 insertions(+), 7 deletions(-)
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diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c
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index 699dfabdbccd..936d7eee62d0 100644
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--- a/net/vmw_vsock/virtio_transport.c
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+++ b/net/vmw_vsock/virtio_transport.c
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@@ -87,9 +87,6 @@ virtio_transport_send_pkt_work(struct work_struct *work)
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vq = vsock->vqs[VSOCK_VQ_TX];
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- /* Avoid unnecessary interrupts while we're processing the ring */
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- virtqueue_disable_cb(vq);
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-
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for (;;) {
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struct virtio_vsock_pkt *pkt;
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struct scatterlist hdr, buf, *sgs[2];
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@@ -99,7 +96,6 @@ virtio_transport_send_pkt_work(struct work_struct *work)
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spin_lock_bh(&vsock->send_pkt_list_lock);
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if (list_empty(&vsock->send_pkt_list)) {
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spin_unlock_bh(&vsock->send_pkt_list_lock);
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- virtqueue_enable_cb(vq);
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break;
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}
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@@ -118,13 +114,13 @@ virtio_transport_send_pkt_work(struct work_struct *work)
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}
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ret = virtqueue_add_sgs(vq, sgs, out_sg, in_sg, pkt, GFP_KERNEL);
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+ /* Usually this means that there is no more space available in
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+ * the vq
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+ */
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if (ret < 0) {
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spin_lock_bh(&vsock->send_pkt_list_lock);
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list_add(&pkt->list, &vsock->send_pkt_list);
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spin_unlock_bh(&vsock->send_pkt_list_lock);
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-
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- if (!virtqueue_enable_cb(vq) && ret == -ENOSPC)
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- continue; /* retry now that we have more space */
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break;
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}
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--
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2.11.0
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