From: Jason Wang <jasowang@redhat.com>
To: mst@redhat.com, jasowang@redhat.com
Cc: kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [RFC PATCH net-next 02/12] vhost_net: introduce vhost_exceeds_weight()
Date: Mon, 21 May 2018 17:04:23 +0800 [thread overview]
Message-ID: <1526893473-20128-3-git-send-email-jasowang@redhat.com> (raw)
In-Reply-To: <1526893473-20128-1-git-send-email-jasowang@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
drivers/vhost/net.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 15d191a..de544ee 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -479,6 +479,12 @@ static size_t init_iov_iter(struct vhost_virtqueue *vq, struct iov_iter *iter,
return len;
}
+static bool vhost_exceeds_weight(int pkts, int total_len)
+{
+ return unlikely(total_len >= VHOST_NET_WEIGHT) ||
+ unlikely(pkts >= VHOST_NET_PKT_WEIGHT);
+}
+
/* Expects to be always run from workqueue - which acts as
* read-size critical section for our kind of RCU. */
static void handle_tx(struct vhost_net *net)
@@ -570,7 +576,6 @@ static void handle_tx(struct vhost_net *net)
msg.msg_control = NULL;
ubufs = NULL;
}
-
total_len += len;
if (total_len < VHOST_NET_WEIGHT &&
!vhost_vq_avail_empty(&net->dev, vq) &&
@@ -600,8 +605,7 @@ static void handle_tx(struct vhost_net *net)
else
vhost_zerocopy_signal_used(net, vq);
vhost_net_tx_packet(net);
- if (unlikely(total_len >= VHOST_NET_WEIGHT) ||
- unlikely(++sent_pkts >= VHOST_NET_PKT_WEIGHT)) {
+ if (unlikely(vhost_exceeds_weight(++sent_pkts, total_len))) {
vhost_poll_queue(&vq->poll);
break;
}
@@ -887,8 +891,7 @@ static void handle_rx(struct vhost_net *net)
if (unlikely(vq_log))
vhost_log_write(vq, vq_log, log, vhost_len);
total_len += vhost_len;
- if (unlikely(total_len >= VHOST_NET_WEIGHT) ||
- unlikely(++recv_pkts >= VHOST_NET_PKT_WEIGHT)) {
+ if (unlikely(vhost_exceeds_weight(++recv_pkts, total_len))) {
vhost_poll_queue(&vq->poll);
goto out;
}
--
2.7.4
next prev parent reply other threads:[~2018-05-21 9:04 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-21 9:04 [RFC PATCH net-next 00/12] XDP batching for TUN/vhost_net Jason Wang
2018-05-21 9:04 ` [RFC PATCH net-next 01/12] vhost_net: introduce helper to initialize tx iov iter Jason Wang
2018-05-21 16:24 ` Jesse Brandeburg
2018-05-22 12:26 ` Jason Wang
2018-05-21 9:04 ` Jason Wang [this message]
2018-05-21 16:29 ` [RFC PATCH net-next 02/12] vhost_net: introduce vhost_exceeds_weight() Jesse Brandeburg
2018-05-22 12:27 ` Jason Wang
2018-05-21 9:04 ` [RFC PATCH net-next 03/12] vhost_net: introduce vhost_has_more_pkts() Jason Wang
2018-05-21 16:39 ` Jesse Brandeburg
2018-05-22 12:31 ` Jason Wang
2018-05-21 9:04 ` [RFC PATCH net-next 04/12] vhost_net: split out datacopy logic Jason Wang
2018-05-21 16:46 ` Jesse Brandeburg
2018-05-22 12:39 ` Jason Wang
2018-05-21 9:04 ` [RFC PATCH net-next 05/12] vhost_net: batch update used ring for datacopy TX Jason Wang
2018-05-21 9:04 ` [RFC PATCH net-next 06/12] tuntap: enable premmption early Jason Wang
2018-05-21 14:32 ` Michael S. Tsirkin
2018-05-21 9:04 ` [RFC PATCH net-next 07/12] tuntap: simplify error handling in tun_build_skb() Jason Wang
2018-05-21 9:04 ` [RFC PATCH net-next 08/12] tuntap: tweak on the path of non-xdp case " Jason Wang
2018-05-21 9:04 ` [RFC PATCH net-next 09/12] tuntap: split out XDP logic Jason Wang
2018-05-21 9:04 ` [RFC PATCH net-next 10/12] vhost_net: build xdp buff Jason Wang
2018-05-21 16:56 ` Jesse Brandeburg
2018-05-21 22:21 ` Michael S. Tsirkin
2018-05-22 12:41 ` Jason Wang
2018-05-21 9:04 ` [RFC PATCH net-next 11/12] vhost_net: passing raw xdp buff to tun Jason Wang
2018-05-21 9:04 ` [RFC PATCH net-next 12/12] vhost_net: batch submitting XDP buffers to underlayer sockets Jason Wang
2018-05-21 14:33 ` Michael S. Tsirkin
2018-05-25 17:53 ` [RFC PATCH net-next 00/12] XDP batching for TUN/vhost_net Michael S. Tsirkin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1526893473-20128-3-git-send-email-jasowang@redhat.com \
--to=jasowang@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mst@redhat.com \
--cc=netdev@vger.kernel.org \
--cc=virtualization@lists.linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).