[dpdk-stable] patch 'net/failsafe: fix removed sub-device cleanup' has been queued to stable release 18.02.2
luca.boccassi at gmail.com
luca.boccassi at gmail.com
Wed May 23 14:10:04 CEST 2018
Hi,
FYI, your patch has been queued to stable release 18.02.2
Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/25/18. So please
shout if anyone has objections.
Thanks.
Luca Boccassi
---
>From 7e42c81e3d86de2a3c3209f4663f4210adf2adda Mon Sep 17 00:00:00 2001
From: Matan Azrad <matan at mellanox.com>
Date: Tue, 22 May 2018 12:38:46 +0000
Subject: [PATCH] net/failsafe: fix removed sub-device cleanup
[ upstream commit 0545c580fc377d33711786eaed665ee60e801bbd ]
The fail-safe PMD registers to RMV event for each removable sub-device
port in order to cleanup the sub-device resources and switch the Tx
sub-device directly when it is plugged-out.
During removal time, the fail-safe PMD stops and closes the sub-device
but it doesn't unregister the LSC and RMV callbacks of the sub-device
port.
It can lead the callbacks to be called for a port which is no more
associated with the fail-safe sub-device, because there is not a
guarantee that a sub-device gets the same port ID for each plug-in
process. This port, for example, may belong to another sub-device of a
different fail-safe device.
Unregister the LSC and RMV callbacks for sub-devices which are not
used.
Fixes: 598fb8aec6f6 ("net/failsafe: support device removal")
Signed-off-by: Matan Azrad <matan at mellanox.com>
Acked-by: Gaetan Rivet <gaetan.rivet at 6wind.com>
---
drivers/net/failsafe/failsafe_ether.c | 30 ++++++++++++++++++++++++++++++
drivers/net/failsafe/failsafe_ops.c | 5 +++++
drivers/net/failsafe/failsafe_private.h | 5 +++++
3 files changed, 40 insertions(+)
diff --git a/drivers/net/failsafe/failsafe_ether.c b/drivers/net/failsafe/failsafe_ether.c
index 780bfa4bc..9bf8d0802 100644
--- a/drivers/net/failsafe/failsafe_ether.c
+++ b/drivers/net/failsafe/failsafe_ether.c
@@ -260,6 +260,7 @@ fs_dev_remove(struct sub_device *sdev)
sdev->state = DEV_ACTIVE;
/* fallthrough */
case DEV_ACTIVE:
+ failsafe_eth_dev_unregister_callbacks(sdev);
rte_eth_dev_close(PORT_ID(sdev));
sdev->state = DEV_PROBED;
/* fallthrough */
@@ -320,6 +321,35 @@ fs_rxtx_clean(struct sub_device *sdev)
return 1;
}
+void
+failsafe_eth_dev_unregister_callbacks(struct sub_device *sdev)
+{
+ int ret;
+
+ if (sdev == NULL)
+ return;
+ if (sdev->rmv_callback) {
+ ret = rte_eth_dev_callback_unregister(PORT_ID(sdev),
+ RTE_ETH_EVENT_INTR_RMV,
+ failsafe_eth_rmv_event_callback,
+ sdev);
+ if (ret)
+ WARN("Failed to unregister RMV callback for sub_device"
+ " %d", SUB_ID(sdev));
+ sdev->rmv_callback = 0;
+ }
+ if (sdev->lsc_callback) {
+ ret = rte_eth_dev_callback_unregister(PORT_ID(sdev),
+ RTE_ETH_EVENT_INTR_LSC,
+ failsafe_eth_lsc_event_callback,
+ sdev);
+ if (ret)
+ WARN("Failed to unregister LSC callback for sub_device"
+ " %d", SUB_ID(sdev));
+ sdev->lsc_callback = 0;
+ }
+}
+
void
failsafe_dev_remove(struct rte_eth_dev *dev)
{
diff --git a/drivers/net/failsafe/failsafe_ops.c b/drivers/net/failsafe/failsafe_ops.c
index 057e435cf..2f9f60b16 100644
--- a/drivers/net/failsafe/failsafe_ops.c
+++ b/drivers/net/failsafe/failsafe_ops.c
@@ -153,6 +153,8 @@ fs_dev_configure(struct rte_eth_dev *dev)
if (ret)
WARN("Failed to register RMV callback for sub_device %d",
SUB_ID(sdev));
+ else
+ sdev->rmv_callback = 1;
}
dev->data->dev_conf.intr_conf.rmv = 0;
if (lsc_interrupt) {
@@ -163,6 +165,8 @@ fs_dev_configure(struct rte_eth_dev *dev)
if (ret)
WARN("Failed to register LSC callback for sub_device %d",
SUB_ID(sdev));
+ else
+ sdev->lsc_callback = 1;
}
dev->data->dev_conf.intr_conf.lsc = lsc_enabled;
sdev->state = DEV_ACTIVE;
@@ -289,6 +293,7 @@ fs_dev_close(struct rte_eth_dev *dev)
PRIV(dev)->state = DEV_ACTIVE - 1;
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));
sdev->state = DEV_ACTIVE - 1;
}
diff --git a/drivers/net/failsafe/failsafe_private.h b/drivers/net/failsafe/failsafe_private.h
index 155207423..404b24923 100644
--- a/drivers/net/failsafe/failsafe_private.h
+++ b/drivers/net/failsafe/failsafe_private.h
@@ -119,6 +119,10 @@ struct sub_device {
volatile unsigned int remove:1;
/* flow isolation state */
int flow_isolated:1;
+ /* RMV callback registration state */
+ unsigned int rmv_callback:1;
+ /* LSC callback registration state */
+ unsigned int lsc_callback:1;
};
struct fs_priv {
@@ -211,6 +215,7 @@ int failsafe_eal_uninit(struct rte_eth_dev *dev);
/* ETH_DEV */
int failsafe_eth_dev_state_sync(struct rte_eth_dev *dev);
+void failsafe_eth_dev_unregister_callbacks(struct sub_device *sdev);
void failsafe_dev_remove(struct rte_eth_dev *dev);
void failsafe_stats_increment(struct rte_eth_stats *to,
struct rte_eth_stats *from);
--
2.14.2
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