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* [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed.
@ 2018-01-05 14:10 Tonghao Zhang
  2018-01-05 14:10 ` [dpdk-dev] [PATCH 2/5] net/ixgbevf: set the inter-interrupt interval for EITR Tonghao Zhang
                   ` (4 more replies)
  0 siblings, 5 replies; 18+ messages in thread
From: Tonghao Zhang @ 2018-01-05 14:10 UTC (permalink / raw)
  To: dev; +Cc: Tonghao Zhang

When we bind the ixgbe VF (e.g 82599 card) to igb_uio and enable the
rx-interrupt, there will be more than one epoll_wait on intr_handle.fd.
One is in "eal-intr-thread" thread, and the others are in the thread
which call the "rte_epoll_wait". The problem is that sometiems
"eal-intr-thread" thread will process the rx interrupt, and then
rte_epoll_wait can't get the event any more, and the packets may be lost.

We should unregister the status interrupt handler in "eal-intr-thread"
thread and the ixgbe pf is in the same case.

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 43e0132..e67389f 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -5049,6 +5049,15 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev,
 	}
 	ixgbevf_configure_msix(dev);
 
+	if (!rte_intr_allow_others(intr_handle)) {
+		rte_intr_callback_unregister(intr_handle,
+					     ixgbevf_dev_interrupt_handler,
+					     dev);
+		if (dev->data->dev_conf.intr_conf.lsc != 0)
+			PMD_INIT_LOG(INFO, "lsc won't enable because of"
+				     " no intr multiplex");
+	}
+
 	/* When a VF port is bound to VFIO-PCI, only miscellaneous interrupt
 	 * is mapped to VFIO vector 0 in eth_ixgbevf_dev_init( ).
 	 * If previous VFIO interrupt mapping setting in eth_ixgbevf_dev_init( )
@@ -5091,6 +5100,12 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev,
 
 	ixgbe_dev_clear_queues(dev);
 
+	if (!rte_intr_allow_others(intr_handle))
+		/* resume to the default handler */
+		rte_intr_callback_register(intr_handle,
+					   ixgbevf_dev_interrupt_handler,
+					   (void *)dev);
+
 	/* Clean datapath event and queue/vec mapping */
 	rte_intr_efd_disable(intr_handle);
 	if (intr_handle->intr_vec != NULL) {
-- 
1.8.3.1

^ permalink raw reply	[flat|nested] 18+ messages in thread
* [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed.
@ 2018-01-05 13:57 Tonghao Zhang
  2018-01-05 13:57 ` [dpdk-dev] [PATCH 5/5] vhost: add reconnect thread name for client mode Tonghao Zhang
  0 siblings, 1 reply; 18+ messages in thread
From: Tonghao Zhang @ 2018-01-05 13:57 UTC (permalink / raw)
  To: dev; +Cc: Tonghao Zhang

When we bind the ixgbe VF (e.g 82599 card) to igb_uio and enable the
rx-interrupt, there will be more than one epoll_wait on intr_handle.fd.
One is in "eal-intr-thread" thread, and the others are in the thread
which call the "rte_epoll_wait". The problem is that sometiems
"eal-intr-thread" thread will process the rx interrupt, and then
rte_epoll_wait can't get the event any more, and the packets may be lost.

We should unregister the status interrupt handler in "eal-intr-thread"
thread and the ixgbe pf is in the same case.

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 43e0132..e67389f 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -5049,6 +5049,15 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev,
 	}
 	ixgbevf_configure_msix(dev);
 
+	if (!rte_intr_allow_others(intr_handle)) {
+		rte_intr_callback_unregister(intr_handle,
+					     ixgbevf_dev_interrupt_handler,
+					     dev);
+		if (dev->data->dev_conf.intr_conf.lsc != 0)
+			PMD_INIT_LOG(INFO, "lsc won't enable because of"
+				     " no intr multiplex");
+	}
+
 	/* When a VF port is bound to VFIO-PCI, only miscellaneous interrupt
 	 * is mapped to VFIO vector 0 in eth_ixgbevf_dev_init( ).
 	 * If previous VFIO interrupt mapping setting in eth_ixgbevf_dev_init( )
@@ -5091,6 +5100,12 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev,
 
 	ixgbe_dev_clear_queues(dev);
 
+	if (!rte_intr_allow_others(intr_handle))
+		/* resume to the default handler */
+		rte_intr_callback_register(intr_handle,
+					   ixgbevf_dev_interrupt_handler,
+					   (void *)dev);
+
 	/* Clean datapath event and queue/vec mapping */
 	rte_intr_efd_disable(intr_handle);
 	if (intr_handle->intr_vec != NULL) {
-- 
1.8.3.1

^ permalink raw reply	[flat|nested] 18+ messages in thread

end of thread, other threads:[~2018-01-14  6:51 UTC | newest]

Thread overview: 18+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-01-05 14:10 [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed Tonghao Zhang
2018-01-05 14:10 ` [dpdk-dev] [PATCH 2/5] net/ixgbevf: set the inter-interrupt interval for EITR Tonghao Zhang
2018-01-11  7:26   ` Xing, Beilei
2018-01-11 14:46     ` Tonghao Zhang
2018-01-05 14:10 ` [dpdk-dev] [PATCH 3/5] net/ixgbevf: save IXGBE_VTEIMS to intr->mask for performance Tonghao Zhang
2018-01-11  7:09   ` Xing, Beilei
2018-01-05 14:10 ` [dpdk-dev] [PATCH 4/5] net/ixgbevf: add check for rte_intr_enable Tonghao Zhang
2018-01-11  7:06   ` Xing, Beilei
2018-01-11 15:35     ` Tonghao Zhang
2018-01-12 12:10     ` Dai, Wei
2018-01-14  6:51       ` Tonghao Zhang
2018-01-05 14:10 ` [dpdk-dev] [PATCH 5/5] vhost: add reconnect thread name for client mode Tonghao Zhang
2018-01-09 13:12   ` Yuanhan Liu
2018-01-09 13:40     ` Yuanhan Liu
2018-01-09 15:28       ` Tonghao Zhang
2018-01-11  6:55 ` [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed Xing, Beilei
2018-01-11 14:24   ` Tonghao Zhang
  -- strict thread matches above, loose matches on Subject: below --
2018-01-05 13:57 Tonghao Zhang
2018-01-05 13:57 ` [dpdk-dev] [PATCH 5/5] vhost: add reconnect thread name for client mode Tonghao Zhang

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