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From: Thomas Monjalon <thomas@monjalon.net>
To: dev@dpdk.org
Cc: ferruh.yigit@intel.com, andrew.rybchenko@oktetlabs.ru,
Liron Himi <lironh@marvell.com>,
Stephen Hemminger <stephen@networkplumber.org>,
Ray Kinsella <mdr@ashroe.eu>, Neil Horman <nhorman@tuxdriver.com>,
Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>,
Gaetan Rivet <grive@u256.net>, Jakub Grajciar <jgrajcia@cisco.com>,
Matan Azrad <matan@nvidia.com>, Shahaf Shuler <shahafs@nvidia.com>,
Viacheslav Ovsiienko <viacheslavo@nvidia.com>,
Zyta Szpak <zr@semihalf.com>, Stephen Hemminger <sthemmin@microsoft.com>,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>, Long Li <longli@microsoft.com>,
Maxime Coquelin <maxime.coquelin@redhat.com>,
Chenbo Xia <chenbo.xia@intel.com>, Zhihong Wang <zhihong.wang@intel.com>
Date: Fri, 16 Oct 2020 15:32:59 +0200
Message-Id: <20201016133259.3061153-4-thomas@monjalon.net>
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<20201016133259.3061153-1-thomas@monjalon.net>
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Subject: [dpdk-dev] [PATCH v6 3/3] ethdev: allow close function to return an
error
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The API function rte_eth_dev_close() was returning void.
The return type is changed to int for notifying of errors.
If an error happens during a close operation,
the status of the port is undefined,
a maximum of resources having been freed.
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Reviewed-by: Liron Himi <lironh@marvell.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
doc/guides/rel_notes/deprecation.rst | 1 -
doc/guides/rel_notes/release_20_11.rst | 4 +++-
drivers/net/cxgbe/cxgbe_ethdev.c | 5 +++--
drivers/net/cxgbe/cxgbevf_ethdev.c | 5 +++--
drivers/net/failsafe/failsafe_ether.c | 6 +++++-
drivers/net/failsafe/failsafe_ops.c | 25 +++++++++++++++++--------
drivers/net/memif/rte_eth_memif.c | 4 +---
drivers/net/mlx5/mlx5.c | 7 ++++---
drivers/net/mvneta/mvneta_ethdev.c | 5 +++--
drivers/net/mvpp2/mrvl_ethdev.c | 5 +++--
drivers/net/netvsc/hn_ethdev.c | 6 ++++--
drivers/net/netvsc/hn_var.h | 2 +-
drivers/net/netvsc/hn_vf.c | 7 +++++--
drivers/net/virtio/virtio_user_ethdev.c | 4 +---
lib/librte_ethdev/rte_ethdev.c | 16 +++++++++++-----
lib/librte_ethdev/rte_ethdev.h | 5 ++++-
16 files changed, 68 insertions(+), 39 deletions(-)
diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 6cbfd11847..6e7bd14a46 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -128,7 +128,6 @@ Deprecation Notices
invalid port ID, unsupported operation, failed operation):
- ``rte_eth_dev_stop``
- - ``rte_eth_dev_close``
* ethdev: New offload flags ``DEV_RX_OFFLOAD_FLOW_MARK`` will be added in 19.11.
This will allow application to enable or disable PMDs from updating
diff --git a/doc/guides/rel_notes/release_20_11.rst b/doc/guides/rel_notes/release_20_11.rst
index 48717ee536..b53cff2adc 100644
--- a/doc/guides/rel_notes/release_20_11.rst
+++ b/doc/guides/rel_notes/release_20_11.rst
@@ -369,7 +369,9 @@ API Changes
* ethdev: ``rte_eth_rx_descriptor_done()`` API has been deprecated.
-* Renamed internal ethdev APIs:
+* ethdev: Added ``int`` return type to ``rte_eth_dev_close()``.
+
+* ethdev: Renamed internal functions:
* ``_rte_eth_dev_callback_process()`` -> ``rte_eth_dev_callback_process()``
* ``_rte_eth_dev_reset`` -> ``rte_eth_dev_internal_reset()``
diff --git a/drivers/net/cxgbe/cxgbe_ethdev.c b/drivers/net/cxgbe/cxgbe_ethdev.c
index 16beb2d435..fe488231a7 100644
--- a/drivers/net/cxgbe/cxgbe_ethdev.c
+++ b/drivers/net/cxgbe/cxgbe_ethdev.c
@@ -1296,12 +1296,13 @@ static int eth_cxgbe_dev_uninit(struct rte_eth_dev *eth_dev)
{
struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
uint16_t port_id;
+ int err = 0;
/* Free up other ports and all resources */
RTE_ETH_FOREACH_DEV_OF(port_id, &pci_dev->device)
- rte_eth_dev_close(port_id);
+ err |= rte_eth_dev_close(port_id);
- return 0;
+ return err == 0 ? 0 : -EIO;
}
static int eth_cxgbe_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
diff --git a/drivers/net/cxgbe/cxgbevf_ethdev.c b/drivers/net/cxgbe/cxgbevf_ethdev.c
index 947fcdd406..c2918f5356 100644
--- a/drivers/net/cxgbe/cxgbevf_ethdev.c
+++ b/drivers/net/cxgbe/cxgbevf_ethdev.c
@@ -183,12 +183,13 @@ static int eth_cxgbevf_dev_uninit(struct rte_eth_dev *eth_dev)
{
struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
uint16_t port_id;
+ int err = 0;
/* Free up other ports and all resources */
RTE_ETH_FOREACH_DEV_OF(port_id, &pci_dev->device)
- rte_eth_dev_close(port_id);
+ err |= rte_eth_dev_close(port_id);
- return 0;
+ return err == 0 ? 0 : -EIO;
}
static int eth_cxgbevf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
diff --git a/drivers/net/failsafe/failsafe_ether.c b/drivers/net/failsafe/failsafe_ether.c
index 7c68bbdec0..950d35dac4 100644
--- a/drivers/net/failsafe/failsafe_ether.c
+++ b/drivers/net/failsafe/failsafe_ether.c
@@ -287,7 +287,11 @@ fs_dev_remove(struct sub_device *sdev)
/* fallthrough */
case DEV_ACTIVE:
failsafe_eth_dev_unregister_callbacks(sdev);
- rte_eth_dev_close(PORT_ID(sdev));
+ ret = rte_eth_dev_close(PORT_ID(sdev));
+ if (ret < 0) {
+ ERROR("Port close failed for sub-device %u",
+ PORT_ID(sdev));
+ }
sdev->state = DEV_PROBED;
/* fallthrough */
case DEV_PROBED:
diff --git a/drivers/net/failsafe/failsafe_ops.c b/drivers/net/failsafe/failsafe_ops.c
index 0ce7dfc8a6..5c606ff077 100644
--- a/drivers/net/failsafe/failsafe_ops.c
+++ b/drivers/net/failsafe/failsafe_ops.c
@@ -638,7 +638,7 @@ failsafe_eth_dev_close(struct rte_eth_dev *dev)
{
struct sub_device *sdev;
uint8_t i;
- int ret;
+ int err, ret = 0;
fs_lock(dev, 0);
failsafe_hotplug_alarm_cancel(dev);
@@ -648,29 +648,38 @@ failsafe_eth_dev_close(struct rte_eth_dev *dev)
FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
DEBUG("Closing sub_device %d", i);
failsafe_eth_dev_unregister_callbacks(sdev);
- rte_eth_dev_close(PORT_ID(sdev));
+ err = rte_eth_dev_close(PORT_ID(sdev));
+ if (err) {
+ ret = ret ? ret : err;
+ ERROR("Error while closing sub-device %u",
+ PORT_ID(sdev));
+ }
sdev->state = DEV_ACTIVE - 1;
}
rte_eth_dev_callback_unregister(RTE_ETH_ALL, RTE_ETH_EVENT_NEW,
failsafe_eth_new_event_callback, dev);
if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
fs_unlock(dev, 0);
- return 0;
+ return ret;
}
fs_dev_free_queues(dev);
- ret = failsafe_eal_uninit(dev);
- if (ret)
+ err = failsafe_eal_uninit(dev);
+ if (err) {
+ ret = ret ? ret : err;
ERROR("Error while uninitializing sub-EAL");
+ }
failsafe_args_free(dev);
rte_free(PRIV(dev)->subs);
rte_free(PRIV(dev)->mcast_addrs);
/* mac_addrs must not be freed alone because part of dev_private */
dev->data->mac_addrs = NULL;
fs_unlock(dev, 0);
- ret = pthread_mutex_destroy(&PRIV(dev)->hotplug_mutex);
- if (ret)
+ err = pthread_mutex_destroy(&PRIV(dev)->hotplug_mutex);
+ if (err) {
+ ret = ret ? ret : err;
ERROR("Error while destroying hotplug mutex");
- return 0;
+ }
+ return ret;
}
static int
diff --git a/drivers/net/memif/rte_eth_memif.c b/drivers/net/memif/rte_eth_memif.c
index ff8a58081f..33bf5c68a3 100644
--- a/drivers/net/memif/rte_eth_memif.c
+++ b/drivers/net/memif/rte_eth_memif.c
@@ -1798,9 +1798,7 @@ rte_pmd_memif_remove(struct rte_vdev_device *vdev)
if (eth_dev == NULL)
return 0;
- rte_eth_dev_close(eth_dev->data->port_id);
-
- return 0;
+ return rte_eth_dev_close(eth_dev->data->port_id);
}
static struct rte_vdev_driver pmd_memif_drv = {
diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index e5ca392fed..dc55988b10 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -2020,6 +2020,7 @@ static int
mlx5_pci_remove(struct rte_pci_device *pci_dev)
{
uint16_t port_id;
+ int ret = 0;
RTE_ETH_FOREACH_DEV_OF(port_id, &pci_dev->device) {
/*
@@ -2027,11 +2028,11 @@ mlx5_pci_remove(struct rte_pci_device *pci_dev)
* call the close function explicitly for secondary process.
*/
if (rte_eal_process_type() == RTE_PROC_SECONDARY)
- mlx5_dev_close(&rte_eth_devices[port_id]);
+ ret |= mlx5_dev_close(&rte_eth_devices[port_id]);
else
- rte_eth_dev_close(port_id);
+ ret |= rte_eth_dev_close(port_id);
}
- return 0;
+ return ret == 0 ? 0 : -EIO;
}
static const struct rte_pci_id mlx5_pci_id_map[] = {
diff --git a/drivers/net/mvneta/mvneta_ethdev.c b/drivers/net/mvneta/mvneta_ethdev.c
index 3c0332ab4d..1574bf35a8 100644
--- a/drivers/net/mvneta/mvneta_ethdev.c
+++ b/drivers/net/mvneta/mvneta_ethdev.c
@@ -966,14 +966,15 @@ static int
rte_pmd_mvneta_remove(struct rte_vdev_device *vdev)
{
uint16_t port_id;
+ int ret = 0;
RTE_ETH_FOREACH_DEV(port_id) {
if (rte_eth_devices[port_id].device != &vdev->device)
continue;
- rte_eth_dev_close(port_id);
+ ret |= rte_eth_dev_close(port_id);
}
- return 0;
+ return ret == 0 ? 0 : -EIO;
}
static struct rte_vdev_driver pmd_mvneta_drv = {
diff --git a/drivers/net/mvpp2/mrvl_ethdev.c b/drivers/net/mvpp2/mrvl_ethdev.c
index a230a96840..df9f336fab 100644
--- a/drivers/net/mvpp2/mrvl_ethdev.c
+++ b/drivers/net/mvpp2/mrvl_ethdev.c
@@ -3022,14 +3022,15 @@ static int
rte_pmd_mrvl_remove(struct rte_vdev_device *vdev)
{
uint16_t port_id;
+ int ret = 0;
RTE_ETH_FOREACH_DEV(port_id) {
if (rte_eth_devices[port_id].device != &vdev->device)
continue;
- rte_eth_dev_close(port_id);
+ ret |= rte_eth_dev_close(port_id);
}
- return 0;
+ return ret == 0 ? 0 : -EIO;
}
static struct rte_vdev_driver pmd_mrvl_drv = {
diff --git a/drivers/net/netvsc/hn_ethdev.c b/drivers/net/netvsc/hn_ethdev.c
index 8743e6e69a..40e6d25f34 100644
--- a/drivers/net/netvsc/hn_ethdev.c
+++ b/drivers/net/netvsc/hn_ethdev.c
@@ -842,14 +842,16 @@ hn_dev_stop(struct rte_eth_dev *dev)
static int
hn_dev_close(struct rte_eth_dev *dev)
{
+ int ret;
+
PMD_INIT_FUNC_TRACE();
if (rte_eal_process_type() != RTE_PROC_PRIMARY)
return 0;
- hn_vf_close(dev);
+ ret = hn_vf_close(dev);
hn_dev_free_queues(dev);
- return 0;
+ return ret;
}
static const struct eth_dev_ops hn_eth_dev_ops = {
diff --git a/drivers/net/netvsc/hn_var.h b/drivers/net/netvsc/hn_var.h
index 4b63f87607..74f30669ac 100644
--- a/drivers/net/netvsc/hn_var.h
+++ b/drivers/net/netvsc/hn_var.h
@@ -217,7 +217,7 @@ const uint32_t *hn_vf_supported_ptypes(struct rte_eth_dev *dev);
int hn_vf_start(struct rte_eth_dev *dev);
void hn_vf_reset(struct rte_eth_dev *dev);
void hn_vf_stop(struct rte_eth_dev *dev);
-void hn_vf_close(struct rte_eth_dev *dev);
+int hn_vf_close(struct rte_eth_dev *dev);
int hn_vf_allmulticast_enable(struct rte_eth_dev *dev);
int hn_vf_allmulticast_disable(struct rte_eth_dev *dev);
diff --git a/drivers/net/netvsc/hn_vf.c b/drivers/net/netvsc/hn_vf.c
index f5f15c0462..d29eee7627 100644
--- a/drivers/net/netvsc/hn_vf.c
+++ b/drivers/net/netvsc/hn_vf.c
@@ -316,18 +316,21 @@ void hn_vf_reset(struct rte_eth_dev *dev)
VF_ETHDEV_FUNC(dev, rte_eth_dev_reset);
}
-void hn_vf_close(struct rte_eth_dev *dev)
+int hn_vf_close(struct rte_eth_dev *dev)
{
struct hn_data *hv = dev->data->dev_private;
uint16_t vf_port;
+ int ret = 0;
rte_rwlock_read_lock(&hv->vf_lock);
vf_port = hv->vf_port;
if (vf_port != HN_INVALID_PORT)
- rte_eth_dev_close(vf_port);
+ ret = rte_eth_dev_close(vf_port);
hv->vf_port = HN_INVALID_PORT;
rte_rwlock_read_unlock(&hv->vf_lock);
+
+ return ret;
}
int hn_vf_stats_reset(struct rte_eth_dev *dev)
diff --git a/drivers/net/virtio/virtio_user_ethdev.c b/drivers/net/virtio/virtio_user_ethdev.c
index f56fc238c4..042665bc09 100644
--- a/drivers/net/virtio/virtio_user_ethdev.c
+++ b/drivers/net/virtio/virtio_user_ethdev.c
@@ -881,9 +881,7 @@ virtio_user_pmd_remove(struct rte_vdev_device *vdev)
return rte_eth_dev_release_port(eth_dev);
/* make sure the device is stopped, queues freed */
- rte_eth_dev_close(eth_dev->data->port_id);
-
- return 0;
+ return rte_eth_dev_close(eth_dev->data->port_id);
}
static int virtio_user_pmd_dma_map(struct rte_vdev_device *vdev, void *addr,
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 3ae2253b9d..11ad32ca61 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -1718,19 +1718,25 @@ rte_eth_dev_set_link_down(uint16_t port_id)
return eth_err(port_id, (*dev->dev_ops->dev_set_link_down)(dev));
}
-void
+int
rte_eth_dev_close(uint16_t port_id)
{
struct rte_eth_dev *dev;
+ int firsterr, binerr;
+ int *lasterr = &firsterr;
- RTE_ETH_VALID_PORTID_OR_RET(port_id);
+ RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
dev = &rte_eth_devices[port_id];
- RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_close);
- (*dev->dev_ops->dev_close)(dev);
+ RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_close, -ENOTSUP);
+ *lasterr = (*dev->dev_ops->dev_close)(dev);
+ if (*lasterr != 0)
+ lasterr = &binerr;
rte_ethdev_trace_close(port_id);
- rte_eth_dev_release_port(dev);
+ *lasterr = rte_eth_dev_release_port(dev);
+
+ return eth_err(port_id, firsterr);
}
int
diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index 500b2ff766..849bcaf85e 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -2306,8 +2306,11 @@ int rte_eth_dev_set_link_down(uint16_t port_id);
*
* @param port_id
* The port identifier of the Ethernet device.
+ * @return
+ * - Zero if the port is closed successfully.
+ * - Negative if something went wrong.
*/
-void rte_eth_dev_close(uint16_t port_id);
+int rte_eth_dev_close(uint16_t port_id);
/**
* Reset a Ethernet device and keep its port id.
--
2.28.0