* [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 3/5] net/ixgbevf: save IXGBE_VTEIMS to intr->mask for performance Tonghao Zhang ` (2 more replies) 0 siblings, 3 replies; 7+ 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] 7+ messages in thread
* [dpdk-dev] [PATCH 3/5] net/ixgbevf: save IXGBE_VTEIMS to intr->mask for performance. 2018-01-05 13:57 [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed Tonghao Zhang @ 2018-01-05 13:57 ` Tonghao Zhang 2018-01-05 13:57 ` [dpdk-dev] [PATCH 4/5] net/ixgbevf: add check for rte_intr_enable Tonghao Zhang 2018-01-05 13:57 ` [dpdk-dev] [PATCH 5/5] vhost: add reconnect thread name for client mode Tonghao Zhang 2 siblings, 0 replies; 7+ messages in thread From: Tonghao Zhang @ 2018-01-05 13:57 UTC (permalink / raw) To: dev; +Cc: Tonghao Zhang If dpdk APPs call the rte_eth_dev_rx_intr_enable or rte_eth_dev_rx_intr_disable frequently, and ixgbe vf will read the IXGBE_VTEIMS register everytime. We can optimize the driver function. The patch save the IXGBE_VTEIMS to mask to avoid read frequently. Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> --- drivers/net/ixgbe/ixgbe_ethdev.c | 55 +++++++++++++++++++++++++--------------- 1 file changed, 35 insertions(+), 20 deletions(-) diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c index b20cab9..e929235 100644 --- a/drivers/net/ixgbe/ixgbe_ethdev.c +++ b/drivers/net/ixgbe/ixgbe_ethdev.c @@ -241,8 +241,8 @@ static int ixgbevf_dev_link_update(struct rte_eth_dev *dev, static void ixgbevf_dev_stop(struct rte_eth_dev *dev); static void ixgbevf_dev_close(struct rte_eth_dev *dev); static int ixgbevf_dev_reset(struct rte_eth_dev *dev); -static void ixgbevf_intr_disable(struct ixgbe_hw *hw); -static void ixgbevf_intr_enable(struct ixgbe_hw *hw); +static void ixgbevf_intr_disable(struct rte_eth_dev *dev); +static void ixgbevf_intr_enable(struct rte_eth_dev *dev); static int ixgbevf_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats); static void ixgbevf_dev_stats_reset(struct rte_eth_dev *dev); @@ -1636,7 +1636,7 @@ static int ixgbe_l2_tn_filter_init(struct rte_eth_dev *eth_dev) ixgbevf_dev_stats_reset(eth_dev); /* Disable the interrupts for VF */ - ixgbevf_intr_disable(hw); + ixgbevf_intr_disable(eth_dev); hw->mac.num_rar_entries = 128; /* The MAX of the underlying PF */ diag = hw->mac.ops.reset_hw(hw); @@ -1705,7 +1705,7 @@ static int ixgbe_l2_tn_filter_init(struct rte_eth_dev *eth_dev) rte_intr_callback_register(intr_handle, ixgbevf_dev_interrupt_handler, eth_dev); rte_intr_enable(intr_handle); - ixgbevf_intr_enable(hw); + ixgbevf_intr_enable(eth_dev); PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x mac.type=%s", eth_dev->data->port_id, pci_dev->id.vendor_id, @@ -1738,7 +1738,7 @@ static int ixgbe_l2_tn_filter_init(struct rte_eth_dev *eth_dev) eth_dev->tx_pkt_burst = NULL; /* Disable the interrupts for VF */ - ixgbevf_intr_disable(hw); + ixgbevf_intr_disable(eth_dev); rte_free(eth_dev->data->mac_addrs); eth_dev->data->mac_addrs = NULL; @@ -4924,19 +4924,32 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev, * Virtual Function operations */ static void -ixgbevf_intr_disable(struct ixgbe_hw *hw) +ixgbevf_intr_disable(struct rte_eth_dev *dev) { + struct ixgbe_interrupt *intr = + IXGBE_DEV_PRIVATE_TO_INTR(dev->data->dev_private); + struct ixgbe_hw *hw = + IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + PMD_INIT_FUNC_TRACE(); /* Clear interrupt mask to stop from interrupts being generated */ IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK); IXGBE_WRITE_FLUSH(hw); + + /* Clear mask value. */ + intr->mask = 0; } static void -ixgbevf_intr_enable(struct ixgbe_hw *hw) +ixgbevf_intr_enable(struct rte_eth_dev *dev) { + struct ixgbe_interrupt *intr = + IXGBE_DEV_PRIVATE_TO_INTR(dev->data->dev_private); + struct ixgbe_hw *hw = + IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + PMD_INIT_FUNC_TRACE(); /* VF enable interrupt autoclean */ @@ -4945,6 +4958,9 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev, IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, IXGBE_VF_IRQ_ENABLE_MASK); IXGBE_WRITE_FLUSH(hw); + + /* Save IXGBE_VTEIMS value to mask. */ + intr->mask = IXGBE_VF_IRQ_ENABLE_MASK; } static int @@ -5070,7 +5086,7 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev, rte_intr_enable(intr_handle); /* Re-enable interrupt for VF */ - ixgbevf_intr_enable(hw); + ixgbevf_intr_enable(dev); return 0; } @@ -5084,7 +5100,7 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev, PMD_INIT_FUNC_TRACE(); - ixgbevf_intr_disable(hw); + ixgbevf_intr_disable(dev); hw->adapter_stopped = 1; ixgbe_stop_adapter(hw); @@ -5582,17 +5598,17 @@ static void ixgbevf_set_vfta_all(struct rte_eth_dev *dev, bool on) { struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev); struct rte_intr_handle *intr_handle = &pci_dev->intr_handle; - uint32_t mask; + struct ixgbe_interrupt *intr = + IXGBE_DEV_PRIVATE_TO_INTR(dev->data->dev_private); struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); uint32_t vec = IXGBE_MISC_VEC_ID; - mask = IXGBE_READ_REG(hw, IXGBE_VTEIMS); if (rte_intr_allow_others(intr_handle)) vec = IXGBE_RX_VEC_START; - mask |= (1 << vec); + intr->mask |= (1 << vec); RTE_SET_USED(queue_id); - IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask); + IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, intr->mask); rte_intr_enable(intr_handle); @@ -5602,19 +5618,19 @@ static void ixgbevf_set_vfta_all(struct rte_eth_dev *dev, bool on) static int ixgbevf_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) { - uint32_t mask; + struct ixgbe_interrupt *intr = + IXGBE_DEV_PRIVATE_TO_INTR(dev->data->dev_private); struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev); struct rte_intr_handle *intr_handle = &pci_dev->intr_handle; uint32_t vec = IXGBE_MISC_VEC_ID; - mask = IXGBE_READ_REG(hw, IXGBE_VTEIMS); if (rte_intr_allow_others(intr_handle)) vec = IXGBE_RX_VEC_START; - mask &= ~(1 << vec); + intr->mask &= ~(1 << vec); RTE_SET_USED(queue_id); - IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask); + IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, intr->mask); return 0; } @@ -8170,7 +8186,7 @@ static void ixgbevf_mbx_process(struct rte_eth_dev *dev) struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); struct ixgbe_interrupt *intr = IXGBE_DEV_PRIVATE_TO_INTR(dev->data->dev_private); - ixgbevf_intr_disable(hw); + ixgbevf_intr_disable(dev); /* read-on-clear nic registers here */ eicr = IXGBE_READ_REG(hw, IXGBE_VTEICR); @@ -8187,7 +8203,6 @@ static void ixgbevf_mbx_process(struct rte_eth_dev *dev) static int ixgbevf_dev_interrupt_action(struct rte_eth_dev *dev) { - struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); struct ixgbe_interrupt *intr = IXGBE_DEV_PRIVATE_TO_INTR(dev->data->dev_private); @@ -8196,7 +8211,7 @@ static void ixgbevf_mbx_process(struct rte_eth_dev *dev) intr->flags &= ~IXGBE_FLAG_MAILBOX; } - ixgbevf_intr_enable(hw); + ixgbevf_intr_enable(dev); return 0; } -- 1.8.3.1 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [dpdk-dev] [PATCH 4/5] net/ixgbevf: add check for rte_intr_enable. 2018-01-05 13:57 [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed Tonghao Zhang 2018-01-05 13:57 ` [dpdk-dev] [PATCH 3/5] net/ixgbevf: save IXGBE_VTEIMS to intr->mask for performance Tonghao Zhang @ 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 2 siblings, 0 replies; 7+ messages in thread From: Tonghao Zhang @ 2018-01-05 13:57 UTC (permalink / raw) To: dev; +Cc: Tonghao Zhang When we bind the ixgbevf to vfio and call the rte_eth_dev_rx_intr_enable and rte_eth_dev_rx_intr_disable frequently, the interrupt setting (msi_set_mask_bit) will take more CPU as show below. rte_intr_enable call the ioctl to map the fd to interrupts frequently. perf top: 5.45% [kernel] [k] msi_set_mask_bit It is unnecessary to call the rte_intr_enable in ixgbe_dev_rx_queue_intr_enable. because the fds has been mapped to interrupt and not unmapped in ixgbe_dev_rx_queue_intr_disable. This patch add checks for using VFIO. With the patch, msi_set_mask_bit is not listed in perl any more. Any suggestion will be welcome. Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> --- drivers/net/ixgbe/ixgbe_ethdev.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c index e929235..79e4097 100644 --- a/drivers/net/ixgbe/ixgbe_ethdev.c +++ b/drivers/net/ixgbe/ixgbe_ethdev.c @@ -5610,7 +5610,9 @@ static void ixgbevf_set_vfta_all(struct rte_eth_dev *dev, bool on) RTE_SET_USED(queue_id); IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, intr->mask); - rte_intr_enable(intr_handle); + if (intr_handle->type == RTE_INTR_HANDLE_UIO || + intr_handle->type == RTE_INTR_HANDLE_UIO_INTX) + rte_intr_enable(intr_handle); return 0; } @@ -5659,7 +5661,10 @@ static void ixgbevf_set_vfta_all(struct rte_eth_dev *dev, bool on) mask &= (1 << (queue_id - 32)); IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask); } - rte_intr_enable(intr_handle); + + if (intr_handle->type == RTE_INTR_HANDLE_UIO || + intr_handle->type == RTE_INTR_HANDLE_UIO_INTX) + rte_intr_enable(intr_handle); return 0; } -- 1.8.3.1 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [dpdk-dev] [PATCH 5/5] vhost: add reconnect thread name for client mode. 2018-01-05 13:57 [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed Tonghao Zhang 2018-01-05 13:57 ` [dpdk-dev] [PATCH 3/5] net/ixgbevf: save IXGBE_VTEIMS to intr->mask for performance Tonghao Zhang 2018-01-05 13:57 ` [dpdk-dev] [PATCH 4/5] net/ixgbevf: add check for rte_intr_enable Tonghao Zhang @ 2018-01-05 13:57 ` Tonghao Zhang 2 siblings, 0 replies; 7+ messages in thread From: Tonghao Zhang @ 2018-01-05 13:57 UTC (permalink / raw) To: dev; +Cc: Tonghao Zhang This patch adds the name for vhost-user reconnect thread. It can help us to know whether the thread is running. Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> --- lib/librte_vhost/socket.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/lib/librte_vhost/socket.c b/lib/librte_vhost/socket.c index d44a0f1..c2e34e0 100644 --- a/lib/librte_vhost/socket.c +++ b/lib/librte_vhost/socket.c @@ -433,6 +433,7 @@ struct vhost_user_reconnect_list { vhost_user_reconnect_init(void) { int ret; + char thread_name[RTE_MAX_THREAD_NAME_LEN]; ret = pthread_mutex_init(&reconn_list.mutex, NULL); if (ret < 0) { @@ -449,6 +450,13 @@ struct vhost_user_reconnect_list { RTE_LOG(ERR, VHOST_CONFIG, "failed to destroy reconnect mutex"); } + } else { + snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN, + "vhost-reconn"); + + if (rte_thread_setname(reconn_tid, thread_name)) + RTE_LOG(DEBUG, VHOST_CONFIG, + "Failed to set thread name for vhost-user reconnect"); } return ret; -- 1.8.3.1 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed. @ 2018-01-05 14:10 Tonghao Zhang 2018-01-11 6:55 ` Xing, Beilei 0 siblings, 1 reply; 7+ 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] 7+ messages in thread
* Re: [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed. 2018-01-05 14:10 [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed Tonghao Zhang @ 2018-01-11 6:55 ` Xing, Beilei 2018-01-11 14:24 ` Tonghao Zhang 0 siblings, 1 reply; 7+ messages in thread From: Xing, Beilei @ 2018-01-11 6:55 UTC (permalink / raw) To: Tonghao Zhang, dev > -----Original Message----- > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Tonghao Zhang > Sent: Friday, January 5, 2018 10:11 PM > To: dev@dpdk.org > Cc: Tonghao Zhang <xiangxia.m.yue@gmail.com> > Subject: [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when > other interrupts not allowed. > > 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> The patch looks OK for me, the commit log can be reworded, for example, "we" can be removed. Apart from that: Acked-by: Beilei Xing <beilei.xing@intel.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] 7+ messages in thread
* Re: [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed. 2018-01-11 6:55 ` Xing, Beilei @ 2018-01-11 14:24 ` Tonghao Zhang 0 siblings, 0 replies; 7+ messages in thread From: Tonghao Zhang @ 2018-01-11 14:24 UTC (permalink / raw) To: Xing, Beilei; +Cc: dev On Thu, Jan 11, 2018 at 2:55 PM, Xing, Beilei <beilei.xing@intel.com> wrote: > > >> -----Original Message----- >> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Tonghao Zhang >> Sent: Friday, January 5, 2018 10:11 PM >> To: dev@dpdk.org >> Cc: Tonghao Zhang <xiangxia.m.yue@gmail.com> >> Subject: [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when >> other interrupts not allowed. >> >> 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> > > The patch looks OK for me, the commit log can be reworded, for example, "we" can be removed. Yes > Apart from that: > Acked-by: Beilei Xing <beilei.xing@intel.com> Thanks for your reviews. I will repost v2 > >> --- >> 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] 7+ messages in thread
end of thread, other threads:[~2018-01-11 14:24 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2018-01-05 13:57 [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed Tonghao Zhang 2018-01-05 13:57 ` [dpdk-dev] [PATCH 3/5] net/ixgbevf: save IXGBE_VTEIMS to intr->mask for performance Tonghao Zhang 2018-01-05 13:57 ` [dpdk-dev] [PATCH 4/5] net/ixgbevf: add check for rte_intr_enable Tonghao Zhang 2018-01-05 13:57 ` [dpdk-dev] [PATCH 5/5] vhost: add reconnect thread name for client mode Tonghao Zhang 2018-01-05 14:10 [dpdk-dev] [PATCH 1/5] net/ixgbevf: unregister irq handler when other interrupts not allowed Tonghao Zhang 2018-01-11 6:55 ` Xing, Beilei 2018-01-11 14:24 ` Tonghao Zhang
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