Hi, Jianwei
How about your test result ?
Hi Wenzhuo
Would you please review this patch ?
Thanks a lot !
> -----Original Message-----
> From: Dai, Wei
> Sent: Thursday, September 28, 2017 10:29 AM
> To: Lu, Wenzhuo <wenzhuo...@intel.com>; Ananyev, Konstantin
> <konstantin.anan...@intel.com>; Liang, Cunming
> <cunming.li...@intel.com>; Ma, Jianwei <jianwei...@intel.com>
> Cc: dev@dpdk.org; Dai, Wei <wei....@intel.com>; sta...@dpdk.org
> Subject: [PATCH v2] net/ixgbe: fix VFIO interrupt mapping in VF
>
> When a VF port is bound to VFIO-PIC, only miscellaneous interrupt is mapped
> to VFIO vector 0 in eth_ixgbevf_dev_init( ).
> In ixgbevf_dev_start(), if previous VFIO interrupt mapping set in
> eth_ixgbevf_dev_init( ) is not cleard, it will fail when calling
> rte_intr_enable( )
> tries to map Rx queue interrupt to other VFIO vectors. This patch clears the
> VFIO interrupt mappings before setting both miscellaneous and Rx queue
> interrupt mappings again to avoid failure.
>
> Fixes: 77234603fba0 ("net/ixgbe: support VF mailbox interrupt for link
> up/down")
> Cc: sta...@dpdk.org
>
> Signed-off-by: Wei Dai <wei....@intel.com>
> ---
> drivers/net/ixgbe/ixgbe_ethdev.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c
> b/drivers/net/ixgbe/ixgbe_ethdev.c
> index 9ca5cbc..f49c616 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> @@ -5046,6 +5046,15 @@ ixgbevf_dev_start(struct rte_eth_dev *dev)
> }
> ixgbevf_configure_msix(dev);
>
> + /* 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( )
> + * is not cleared, it will fail when following rte_intr_enable( ) tries
> + * to map Rx queue interrupt to other VFIO vectors.
> + * So clear uio/vfio intr/evevnfd first to avoid failure.
> + */
> + rte_intr_disable(intr_handle);
> +
> rte_intr_enable(intr_handle);
>
> /* Re-enable interrupt for VF */
> --
> 2.7.5
