From: David Marchand <david.marchand@redhat.com>
To: dev@dpdk.org
Cc: maxime.coquelin@redhat.com, stephen@networkplumber.org,
chenbo.xia@intel.com, jiayu.hu@intel.com, yuanx.wang@intel.com,
xuan.ding@intel.com, mb@smartsharesystems.com
Subject: [PATCH v6 3/9] vhost: terminate when access lock is not taken
Date: Tue, 7 Feb 2023 11:45:26 +0100 [thread overview]
Message-ID: <20230207104532.2370869-4-david.marchand@redhat.com> (raw)
In-Reply-To: <20230207104532.2370869-1-david.marchand@redhat.com>
Be a bit more strict when a programmatic error is detected with regards to
the access_lock not being taken.
Mark the new helper with __rte_assert_exclusive_lock so that clang
understands where locks are expected to be taken.
Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
lib/vhost/vhost.c | 18 +++---------------
lib/vhost/vhost.h | 10 ++++++++++
lib/vhost/virtio_net.c | 6 +-----
3 files changed, 14 insertions(+), 20 deletions(-)
diff --git a/lib/vhost/vhost.c b/lib/vhost/vhost.c
index 19c7b92c32..8cd727ca2f 100644
--- a/lib/vhost/vhost.c
+++ b/lib/vhost/vhost.c
@@ -1781,11 +1781,7 @@ rte_vhost_async_channel_register_thread_unsafe(int vid, uint16_t queue_id)
if (unlikely(vq == NULL || !dev->async_copy))
return -1;
- if (unlikely(!rte_spinlock_is_locked(&vq->access_lock))) {
- VHOST_LOG_CONFIG(dev->ifname, ERR, "%s() called without access lock taken.\n",
- __func__);
- return -1;
- }
+ vq_assert_lock(dev, vq);
return async_channel_register(dev, vq);
}
@@ -1847,11 +1843,7 @@ rte_vhost_async_channel_unregister_thread_unsafe(int vid, uint16_t queue_id)
if (vq == NULL)
return -1;
- if (unlikely(!rte_spinlock_is_locked(&vq->access_lock))) {
- VHOST_LOG_CONFIG(dev->ifname, ERR, "%s() called without access lock taken.\n",
- __func__);
- return -1;
- }
+ vq_assert_lock(dev, vq);
if (!vq->async)
return 0;
@@ -1994,11 +1986,7 @@ rte_vhost_async_get_inflight_thread_unsafe(int vid, uint16_t queue_id)
if (vq == NULL)
return ret;
- if (unlikely(!rte_spinlock_is_locked(&vq->access_lock))) {
- VHOST_LOG_CONFIG(dev->ifname, ERR, "%s() called without access lock taken.\n",
- __func__);
- return -1;
- }
+ vq_assert_lock(dev, vq);
if (!vq->async)
return ret;
diff --git a/lib/vhost/vhost.h b/lib/vhost/vhost.h
index 1f913803f6..82fe9b5fda 100644
--- a/lib/vhost/vhost.h
+++ b/lib/vhost/vhost.h
@@ -513,6 +513,16 @@ struct virtio_net {
struct rte_vhost_user_extern_ops extern_ops;
} __rte_cache_aligned;
+static inline void
+vq_assert_lock__(struct virtio_net *dev, struct vhost_virtqueue *vq, const char *func)
+ __rte_assert_exclusive_lock(&vq->access_lock)
+{
+ if (unlikely(!rte_spinlock_is_locked(&vq->access_lock)))
+ rte_panic("VHOST_CONFIG: (%s) %s() called without access lock taken.\n",
+ dev->ifname, func);
+}
+#define vq_assert_lock(dev, vq) vq_assert_lock__(dev, vq, __func__)
+
static __rte_always_inline bool
vq_is_packed(struct virtio_net *dev)
{
diff --git a/lib/vhost/virtio_net.c b/lib/vhost/virtio_net.c
index aac7aa9d01..cc9675ebe5 100644
--- a/lib/vhost/virtio_net.c
+++ b/lib/vhost/virtio_net.c
@@ -2367,11 +2367,7 @@ rte_vhost_clear_queue_thread_unsafe(int vid, uint16_t queue_id,
vq = dev->virtqueue[queue_id];
- if (unlikely(!rte_spinlock_is_locked(&vq->access_lock))) {
- VHOST_LOG_DATA(dev->ifname, ERR, "%s() called without access lock taken.\n",
- __func__);
- return -1;
- }
+ vq_assert_lock(dev, vq);
if (unlikely(!vq->async)) {
VHOST_LOG_DATA(dev->ifname, ERR,
--
2.39.1
next prev parent reply other threads:[~2023-02-07 10:46 UTC|newest]
Thread overview: 110+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-28 12:17 [RFC PATCH 0/5] vhost lock annotations David Marchand
2022-03-28 12:17 ` [RFC PATCH 1/5] vhost: fix missing virtqueue lock protection David Marchand
2022-03-28 12:17 ` [RFC PATCH 2/5] vhost: annotate virtqueue access lock David Marchand
2022-03-28 12:17 ` [RFC PATCH 3/5] vhost: fix async access David Marchand
2022-03-28 12:17 ` [RFC PATCH 4/5] vhost: annotate async locking requirement David Marchand
2022-03-28 12:17 ` [RFC PATCH 5/5] vhost: annotate IOTLB locks David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 0/9] vhost lock annotations David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 1/9] vhost: fix missing virtqueue lock protection David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 2/9] eal: annotate spinlock and rwlock David Marchand
2022-03-31 9:22 ` David Marchand
2022-04-04 6:21 ` Stephen Hemminger
2022-04-07 8:20 ` David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 3/9] vhost: annotate virtqueue access lock David Marchand
2022-04-07 1:40 ` Hu, Jiayu
2022-04-07 7:03 ` David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 4/9] vhost: fix async access David Marchand
2022-03-31 8:00 ` Maxime Coquelin
2022-03-31 10:23 ` Hu, Jiayu
2022-04-04 6:57 ` Pai G, Sunil
2022-03-30 13:49 ` [RFC PATCH v2 5/9] vhost: annotate async acesses David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 6/9] vhost: annotate need reply handling David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 7/9] vhost: annotate VDPA device list accesses David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 8/9] vhost: annotate IOTLB locks David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 9/9] vhost: enable lock check David Marchand
2022-03-30 14:03 ` [RFC PATCH v2 0/9] vhost lock annotations David Marchand
2022-03-30 14:37 ` Ali Alnubani
2022-04-05 7:11 ` David Marchand
2022-04-11 11:00 ` [RFC PATCH v3 0/8] " David Marchand
2022-04-11 11:00 ` [RFC PATCH v3 1/8] eal: annotate spinlock and rwlock David Marchand
2022-04-21 13:48 ` Maxime Coquelin
2022-04-28 12:16 ` David Marchand
2022-04-11 11:00 ` [RFC PATCH v3 2/8] vhost: annotate virtqueue access lock David Marchand
2022-04-21 15:25 ` Maxime Coquelin
2022-04-22 9:49 ` David Marchand
2022-04-11 11:00 ` [RFC PATCH v3 3/8] vhost: fix async access David Marchand
2022-04-21 19:21 ` Maxime Coquelin
2022-05-17 13:24 ` Maxime Coquelin
2022-04-11 11:00 ` [RFC PATCH v3 4/8] vhost: annotate async accesses David Marchand
2022-04-22 7:20 ` Maxime Coquelin
2022-04-11 11:00 ` [RFC PATCH v3 5/8] vhost: annotate need reply handling David Marchand
2022-04-22 7:25 ` Maxime Coquelin
2022-04-11 11:00 ` [RFC PATCH v3 6/8] vhost: annotate vDPA device list accesses David Marchand
2022-04-22 7:26 ` Maxime Coquelin
2022-04-11 11:00 ` [RFC PATCH v3 7/8] vhost: annotate IOTLB locks David Marchand
2022-04-22 7:46 ` Maxime Coquelin
2022-04-11 11:00 ` [RFC PATCH v3 8/8] vhost: enable lock check David Marchand
2022-04-22 7:47 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 0/9] vhost lock annotations David Marchand
2023-01-19 18:46 ` [PATCH v4 1/9] eal: annotate spinlock, rwlock and seqlock David Marchand
2023-01-19 19:42 ` Stephen Hemminger
2023-01-19 20:39 ` Tyler Retzlaff
2023-01-19 21:16 ` David Marchand
2023-01-19 21:50 ` Tyler Retzlaff
2023-01-26 12:18 ` David Marchand
2023-01-19 20:55 ` David Marchand
2023-01-19 19:43 ` Stephen Hemminger
2023-01-31 16:18 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 2/9] vhost: simplify need reply handling David Marchand
2023-01-31 16:41 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 3/9] vhost: terminate when access lock is not taken David Marchand
2023-01-31 16:47 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 4/9] vhost: annotate virtqueue access lock David Marchand
2023-01-31 16:50 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 5/9] vhost: annotate async accesses David Marchand
2023-01-31 16:54 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 6/9] vhost: always take IOTLB lock David Marchand
2023-01-31 16:59 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 7/9] vhost: annotate " David Marchand
2023-01-31 17:05 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 8/9] vhost: annotate vDPA device list accesses David Marchand
2023-01-31 17:08 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 9/9] vhost: enable lock check David Marchand
2023-01-31 17:14 ` Maxime Coquelin
2023-01-19 19:20 ` [PATCH v4 0/9] vhost lock annotations Morten Brørup
2023-02-01 11:14 ` [PATCH v5 0/9] Lock annotations David Marchand
2023-02-01 11:14 ` [PATCH v5 1/9] eal: annotate spinlock, rwlock and seqlock David Marchand
2023-02-01 12:32 ` David Marchand
2023-02-06 1:01 ` Tu, Lijuan
2023-02-06 8:12 ` David Marchand
2023-02-01 11:14 ` [PATCH v5 2/9] vhost: simplify need reply handling David Marchand
2023-02-01 11:14 ` [PATCH v5 3/9] vhost: terminate when access lock is not taken David Marchand
2023-02-01 11:14 ` [PATCH v5 4/9] vhost: annotate virtqueue access lock David Marchand
2023-02-01 11:14 ` [PATCH v5 5/9] vhost: annotate async accesses David Marchand
2023-02-01 11:14 ` [PATCH v5 6/9] vhost: always take IOTLB lock David Marchand
2023-02-01 11:14 ` [PATCH v5 7/9] vhost: annotate " David Marchand
2023-02-01 11:14 ` [PATCH v5 8/9] vhost: annotate vDPA device list accesses David Marchand
2023-02-01 11:14 ` [PATCH v5 9/9] vhost: enable lock check David Marchand
2023-02-07 10:45 ` [PATCH v6 0/9] Lock annotations David Marchand
2023-02-07 10:45 ` [PATCH v6 1/9] eal: annotate spinlock, rwlock and seqlock David Marchand
2023-02-09 8:00 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 2/9] vhost: simplify need reply handling David Marchand
2023-02-09 8:00 ` Xia, Chenbo
2023-02-07 10:45 ` David Marchand [this message]
2023-02-09 8:01 ` [PATCH v6 3/9] vhost: terminate when access lock is not taken Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 4/9] vhost: annotate virtqueue access lock David Marchand
2023-02-09 8:01 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 5/9] vhost: annotate async accesses David Marchand
2023-02-09 8:01 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 6/9] vhost: always take IOTLB lock David Marchand
2023-02-09 8:01 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 7/9] vhost: annotate " David Marchand
2023-02-09 8:02 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 8/9] vhost: annotate vDPA device list accesses David Marchand
2023-02-09 8:02 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 9/9] vhost: enable lock check David Marchand
2023-02-09 8:05 ` Xia, Chenbo
2023-02-09 7:59 ` [PATCH v6 0/9] Lock annotations Xia, Chenbo
2023-02-09 8:08 ` David Marchand
2023-02-09 8:24 ` Xia, Chenbo
2023-02-09 13:48 ` David Marchand
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