From: Luca Boccassi <bluca@debian.org>
To: stable@dpdk.org
Cc: yskoh@mellanox.com
Subject: [dpdk-stable] [PATCH 17.11] net/virtio: register/unregister intr handler on start/stop
Date: Mon, 3 Dec 2018 10:27:54 +0000 [thread overview]
Message-ID: <20181203102754.17543-1-bluca@debian.org> (raw)
[ backported from upstream commit f9b0d1902caf893493b5e07763ecf817c34fc75c ]
Register and unregister the virtio interrupt handler when the device is
started and stopped. This allows a virtio device to be hotplugged or
unplugged.
Fixes: c1f86306a026 ("virtio: add new driver")
Signed-off-by: Brian Russell <brussell@brocade.com>
Signed-off-by: Luca Boccassi <bluca@debian.org>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
Adjusted context for 17.11, no functional changes.
drivers/net/virtio/virtio_ethdev.c | 26 +++++++++++++++-----------
1 file changed, 15 insertions(+), 11 deletions(-)
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 4da1ba32e..6eece5bcf 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1622,11 +1622,6 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
if (ret < 0)
goto out;
- /* Setup interrupt callback */
- if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
- rte_intr_callback_register(eth_dev->intr_handle,
- virtio_interrupt_handler, eth_dev);
-
return 0;
out:
@@ -1652,11 +1647,6 @@ eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
rte_free(eth_dev->data->mac_addrs);
eth_dev->data->mac_addrs = NULL;
- /* reset interrupt callback */
- if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
- rte_intr_callback_unregister(eth_dev->intr_handle,
- virtio_interrupt_handler,
- eth_dev);
if (eth_dev->device)
rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
@@ -1833,6 +1823,12 @@ virtio_dev_start(struct rte_eth_dev *dev)
dev->data->dev_conf.intr_conf.rxq) {
virtio_intr_disable(dev);
+ /* Setup interrupt callback */
+ if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
+ rte_intr_callback_register(dev->intr_handle,
+ virtio_interrupt_handler,
+ dev);
+
if (virtio_intr_enable(dev) < 0) {
PMD_DRV_LOG(ERR, "interrupt enable failed");
return -EIO;
@@ -1947,9 +1943,17 @@ virtio_dev_stop(struct rte_eth_dev *dev)
PMD_INIT_LOG(DEBUG, "stop");
- if (intr_conf->lsc || intr_conf->rxq)
+ if (intr_conf->lsc || intr_conf->rxq) {
virtio_intr_disable(dev);
+ /* Reset interrupt callback */
+ if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
+ rte_intr_callback_unregister(dev->intr_handle,
+ virtio_interrupt_handler,
+ dev);
+ }
+ }
+
hw->started = 0;
memset(&link, 0, sizeof(link));
virtio_dev_atomic_write_link_status(dev, &link);
--
2.19.2
next reply other threads:[~2018-12-03 10:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-03 10:27 Luca Boccassi [this message]
2018-12-05 19:06 ` Yongseok Koh
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