> -----Original Message-----
> From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Tonghao Zhang
> Sent: Friday, January 5, 2018 10:11 PM
> To: dev@dpdk.org
> Cc: Tonghao Zhang <xiangxia.m....@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....@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.x...@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
