> -----Original Message----- > From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Wei Dai > Sent: Friday, November 3, 2017 3:14 PM > To: Wu, Jingjing <jingjing...@intel.com>; Xing, Beilei > <beilei.x...@intel.com>; Liang, Cunming <cunming.li...@intel.com> > Cc: dev@dpdk.org; Dai, Wei <wei....@intel.com> > Subject: [dpdk-dev] [PATCH v2 0/2] Fix 2 bugs of i40e VF interrupt found in > l3fwd-power > > These 2 bugs can be observed from example/l3fwd-power run with i40e VF > bound to VFIO-PCI. The test steps are as follows: > 1. Disable LSC interrupt by clearing port_conf.intr_conf.lsc=0, as i40e > VF doesn't support LSC interrupt to avoid rte_eth_dev_configure() failure. > 2. Create a VF from i40e host PF. Let PF run with kernel driver and bind > its VF to VFIO-PCI > 3. Run l3fwd-power like: l3fwd-power -l 18-19 -- -p 0x1 --config='(0,0,19)' > > Then, the following error message appears like: > EAL: Error enabling MSI-X interrupts for fd 18 > This error is from rte_intr_enable( )/vfio_enable_msix( ) when enabling > Rx queue interrupt. > Same as the patch 06938770186a ("net/ixgbe: fix VFIO interrupt mapping in > VF"), > to change VFIO MSI-X interrupts mapping, previous mapping should be > cleared > first to avoid above error. > > After fixing above VFIO-PCI MSI-X interrupt mapping. There is still the > following > 2nd bug: l3fwd-power still can not be waked up by incoming packets. > > Same as the patch ca9d6597184b ("net/ixgbe: fix Rx queue interrupt mapping > in VF"), > the interrupt vector of Rx queues should be mapped to vector 1 to fix above > 2nd bug. > > These patches have passed test with l3fwd-power using i40e VF bound to > VFIO-PCI. > They also passed the test with testpmd rxonly and txonly mode with igb_uio > and VFIO-PCI. > > Signed-off-by: Wei Dai <wei....@intel.com> Tested-by: Lei Yao<lei.a....@intel.com> > > --- > v2: only remap VFIO interrupt in i40evf_dev_start( ) > > > Wei Dai (2): > net/i40e: fix VFIO interrupt mapping in VF > net/i40e: fix Rx queue interrupt mapping in VF > > drivers/net/i40e/i40e_ethdev_vf.c | 18 ++++++++++++++---- > 1 file changed, 14 insertions(+), 4 deletions(-) > > -- > 2.7.4 Following test case is tested and passed with this patch. L3fwd-power with 1 i40e PF (vfio-pci) can receive interrupt L3fwd-power with 1 i40e VF (vfio-pci) can receive interrupt L3fwd-power with 2 i40e VF (vfio-pci) can receive interrupt
OS: Ubuntu 16.04 CPU: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz NIC: Ethernet Controller X710
