From: patrick.fu@intel.com
To: dev@dpdk.org, maxime.coquelin@redhat.com, chenbo.xia@intel.com
Cc: patrick.fu@intel.com
Subject: [dpdk-dev] [PATCH v1] vhost: add vq status check in async enqueue poll
Date: Thu, 16 Jul 2020 23:30:10 +0800 [thread overview]
Message-ID: <20200716153010.2894802-1-patrick.fu@intel.com> (raw)
From: Patrick Fu <patrick.fu@intel.com>
Vring should not be touched if vq is disabled. This patch adds the vq
status check in async enqueue polling to avoid accessing to a disabled
queue.
Fixes: cd6760da1076 ("vhost: introduce async enqueue for split ring")
Signed-off-by: Patrick Fu <patrick.fu@intel.com>
---
lib/librte_vhost/virtio_net.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c
index 1d0be3dd4..b197d76d3 100644
--- a/lib/librte_vhost/virtio_net.c
+++ b/lib/librte_vhost/virtio_net.c
@@ -1686,9 +1686,11 @@ uint16_t rte_vhost_poll_enqueue_completed(int vid, uint16_t queue_id,
if (n_pkts_put) {
vq->async_pkts_inflight_n -= n_pkts_put;
- __atomic_add_fetch(&vq->used->idx, n_descs, __ATOMIC_RELEASE);
-
- vhost_vring_call_split(dev, vq);
+ if (likely(vq->enabled && vq->access_ok)) {
+ __atomic_add_fetch(&vq->used->idx,
+ n_descs, __ATOMIC_RELEASE);
+ vhost_vring_call_split(dev, vq);
+ }
}
if (start_idx + n_pkts_put <= vq_size) {
--
2.18.4
next reply other threads:[~2020-07-16 15:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-16 15:30 patrick.fu [this message]
2020-07-17 8:09 ` Xia, Chenbo
2020-07-17 13:09 ` Ferruh Yigit
2020-07-20 15:57 ` Maxime Coquelin
2020-07-20 16:49 ` Ferruh Yigit
2020-07-21 3:38 ` Fu, Patrick
2020-07-21 3:35 ` [dpdk-dev] [PATCH v2] vhost: fix missing virtqueue status check in async path patrick.fu
2020-07-21 8:36 ` Maxime Coquelin
2020-07-21 14:53 ` Ferruh Yigit
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