On Tue, Apr 10, 2018 at 10:18:09AM -0400, Junjie Chen wrote:
dev_start sets *dev_attached* after setup queues, this sets device to
invalid state since no frontend is attached. Also destroy_device set
*started* to zero which makes *allow_queuing* always zero until dev_start
get called again. Actually, we should not determine queues existence by
*dev_attached* but by queues pointers or other separated variable(s).
Fixes: 30a701a53737 ("net/vhost: fix crash when creating vdev
dynamically")
Signed-off-by: Junjie Chen <junjie.j.c...@intel.com>
So this fixes the problem I saw with allow_queueing always being zero
and the error message "VHOST_CONFIG: (0) device not found".
However with this patch on top of virtio-next/master no packets are
being forwarded to the guest and back anymore.
When I use virtio-next/master and revert 30a701a53737 both works fine.
regards,
Jens
---
drivers/net/vhost/rte_eth_vhost.c | 64 +++++++++++++++++++++++----------------
1 file changed, 38 insertions(+), 26 deletions(-)
diff --git a/drivers/net/vhost/rte_eth_vhost.c
b/drivers/net/vhost/rte_eth_vhost.c
index 11b6076..6a2ff76 100644
--- a/drivers/net/vhost/rte_eth_vhost.c
+++ b/drivers/net/vhost/rte_eth_vhost.c
@@ -118,6 +118,7 @@ struct pmd_internal {
char *iface_name;
uint16_t max_queues;
uint16_t vid;
+ uint16_t queue_ready;
rte_atomic32_t started;
};
@@ -528,10 +529,13 @@ update_queuing_status(struct rte_eth_dev *dev)
unsigned int i;
int allow_queuing = 1;
- if (rte_atomic32_read(&internal->dev_attached) == 0)
+ if (!dev->data->rx_queues || !dev->data->tx_queues) {
+ RTE_LOG(ERR, PMD, "RX/TX queues not setup yet\n");
return;
+ }
- if (rte_atomic32_read(&internal->started) == 0)
+ if (rte_atomic32_read(&internal->started) == 0 ||
+ rte_atomic32_read(&internal->dev_attached) == 0)
allow_queuing = 0;
/* Wait until rx/tx_pkt_burst stops accessing vhost device */
@@ -576,6 +580,8 @@ queue_setup(struct rte_eth_dev *eth_dev, struct
pmd_internal *internal)
vq->internal = internal;
vq->port = eth_dev->data->port_id;
}
+
+ internal->queue_ready = 1;
}
static int
@@ -607,13 +613,10 @@ new_device(int vid)
#endif
internal->vid = vid;
- if (eth_dev->data->rx_queues && eth_dev->data->tx_queues) {
+ if (eth_dev->data->rx_queues && eth_dev->data->tx_queues)
queue_setup(eth_dev, internal);
- rte_atomic32_set(&internal->dev_attached, 1);
- } else {
- RTE_LOG(INFO, PMD, "RX/TX queues have not setup yet\n");
- rte_atomic32_set(&internal->dev_attached, 0);
- }
+ else
+ RTE_LOG(INFO, PMD, "RX/TX queues not setup yet\n");
for (i = 0; i < rte_vhost_get_vring_num(vid); i++)
rte_vhost_enable_guest_notification(vid, i, 0);
@@ -622,6 +625,7 @@ new_device(int vid)
eth_dev->data->dev_link.link_status = ETH_LINK_UP;
+ rte_atomic32_set(&internal->dev_attached, 1);
update_queuing_status(eth_dev);
RTE_LOG(INFO, PMD, "Vhost device %d created\n", vid);
@@ -657,17 +661,19 @@ destroy_device(int vid)
eth_dev->data->dev_link.link_status = ETH_LINK_DOWN;
- for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
- vq = eth_dev->data->rx_queues[i];
- if (vq == NULL)
- continue;
- vq->vid = -1;
- }
- for (i = 0; i < eth_dev->data->nb_tx_queues; i++) {
- vq = eth_dev->data->tx_queues[i];
- if (vq == NULL)
- continue;
- vq->vid = -1;
+ if (eth_dev->data->rx_queues && eth_dev->data->tx_queues) {
+ for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
+ vq = eth_dev->data->rx_queues[i];
+ if (!vq)
+ continue;
+ vq->vid = -1;
+ }
+ for (i = 0; i < eth_dev->data->nb_tx_queues; i++) {
+ vq = eth_dev->data->tx_queues[i];
+ if (!vq)
+ continue;
+ vq->vid = -1;
+ }
}
state = vring_states[eth_dev->data->port_id];
@@ -792,11 +798,14 @@ eth_dev_start(struct rte_eth_dev *eth_dev)
{
struct pmd_internal *internal = eth_dev->data->dev_private;
- if (unlikely(rte_atomic32_read(&internal->dev_attached) == 0)) {
- queue_setup(eth_dev, internal);
- rte_atomic32_set(&internal->dev_attached, 1);
+ if (!eth_dev->data->rx_queues || !eth_dev->data->tx_queues) {
+ RTE_LOG(ERR, PMD, "RX/TX queues not exist yet\n");
+ return -1;
}
+ if (!internal->queue_ready)
+ queue_setup(eth_dev, internal);
+
rte_atomic32_set(&internal->started, 1);
update_queuing_status(eth_dev);
@@ -836,10 +845,13 @@ eth_dev_close(struct rte_eth_dev *dev)
pthread_mutex_unlock(&internal_list_lock);
rte_free(list);
- for (i = 0; i < dev->data->nb_rx_queues; i++)
- rte_free(dev->data->rx_queues[i]);
- for (i = 0; i < dev->data->nb_tx_queues; i++)
- rte_free(dev->data->tx_queues[i]);
+ if (dev->data->rx_queues)
+ for (i = 0; i < dev->data->nb_rx_queues; i++)
+ rte_free(dev->data->rx_queues[i]);
+
+ if (dev->data->tx_queues)
+ for (i = 0; i < dev->data->nb_tx_queues; i++)
+ rte_free(dev->data->tx_queues[i]);
rte_free(dev->data->mac_addrs);
free(internal->dev_name);
--
2.0.1
