[dpdk-dev] [PATCH v3 2/2] net/i40e: fix Rx queue interrupt mapping in VF

[Wu, Jingjing]

> -----Original Message-----
> From: Dai, Wei
> Sent: Friday, November 3, 2017 4:48 PM
> To: Wu, Jingjing <jingjing.wu at intel.com>; Xing, Beilei <beilei.xing at intel.com>
> Cc: dev at dpdk.org; Dai, Wei <wei.dai at intel.com>; stable at dpdk.org
> Subject: [PATCH v3 2/2] net/i40e: fix Rx queue interrupt mapping in VF
> 
> When a VF port is bound to VFIO-PCI, miscellaneous interrupt is
> mapped to MSI-X vector 0 and Rx queues interrupt are mapped to
> other vectors in vfio_enable_msix( ). To simplify implementation,
> all VFIO-PCI bound i40e VF Rx queue interrupts can be mapped in
> vector 1. And as current igb_uio only support only one vector,
> i40e VF PMD should use vector 0 for igb_uio and vector 1 for
> VFIO-PCI. Without this patch, VF Rx queue interrupt is mapped
> to vector 0 in register settings and mapped to VFIO vector 1
> in vfio_enable_msix( ), and then all Rx queue interrupts will
> be missed.
> Also remove 2 unsed macro definitions.
> 
> Fixes: 4b90a3ff26c5 ("i40evf: support Rx interrupt")
> Fixes: 975ffea6f671 ("net/i40e: remove DPDK PF version specific code")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Wei Dai <wei.dai at intel.com>
Acked-by: Jingjing Wu <jingjing.wu at intel.com>