The ixgbe driver (from 1.8 or 2.0) works fine in normal (non-vectored) mode. But when vector mode is enabled, it gets a few packets through then hangs. We use 2 Rx queues and 1 Tx queue per interface.
Devices: 01:00.0 Ethernet controller: Intel Corporation 82599EB 10-Gigabit SFI/SFP+ Network Connection (rev 01) 02:00.0 Ethernet controller: Intel Corporation Ethernet Controller 10-Gigabit X540-AT2 (rev 01) Log: EAL: probe driver: 8086:10fb rte_ixgbe_pmd PMD: eth_ixgbe_dev_init(): MAC: 2, PHY: 17, SFP+: 5 PMD: eth_ixgbe_dev_init(): port 0 vendorID=0x8086 deviceID=0x10fb EAL: probe driver: 8086:1528 rte_ixgbe_pmd PMD: eth_ixgbe_dev_init(): MAC: 4, PHY: 3 PMD: eth_ixgbe_dev_init(): port 1 vendorID=0x8086 deviceID=0x1528 [ 0.000043] DATAPLANE: Port 0 rte_ixgbe_pmd on socket 0 [ 0.000053] DATAPLANE: Port 1 rte_ixgbe_pmd on socket 0 [ 0.031638] PMD: ixgbe_dev_rx_queue_setup(): sw_ring=0x7fc5ac6a1b40 hw_ring=0x7fc5ab548300 dma_addr=0x67348300 [ 0.031647] PMD: ixgbe_dev_rx_queue_setup(): Rx Burst Bulk Alloc Preconditions are satisfied. Rx Burst Bulk Alloc function will be used on port=0, queue=0. [ 0.031653] PMD: ixgbe_dev_rx_queue_setup(): Vector rx enabled, please make sure RX burst size no less than 32. [ 0.031672] PMD: ixgbe_dev_rx_queue_setup(): sw_ring=0x7fc5ac6999c0 hw_ring=0x7fc5ab558380 dma_addr=0x67358380 [ 0.031680] PMD: ixgbe_dev_rx_queue_setup(): Rx Burst Bulk Alloc Preconditions are satisfied. Rx Burst Bulk Alloc function will be used on port=0, queue=1. [ 0.031695] PMD: ixgbe_dev_rx_queue_setup(): Vector rx enabled, please make sure RX burst size no less than 32. [ 0.031708] PMD: ixgbe_dev_tx_queue_setup(): sw_ring=0x7fc5ac697880 hw_ring=0x7fc5ab568400 dma_addr=0x67368400 [ 0.035745] PMD: ixgbe_dev_rx_queue_setup(): sw_ring=0x7fc5ac684e00 hw_ring=0x7fc5ab580480 dma_addr=0x67380480 [ 0.035754] PMD: ixgbe_dev_rx_queue_setup(): Rx Burst Bulk Alloc Preconditions are satisfied. Rx Burst Bulk Alloc function will be used on port=1, queue=0. [ 0.035761] PMD: ixgbe_dev_rx_queue_setup(): Vector rx enabled, please make sure RX burst size no less than 32. [ 0.035783] PMD: ixgbe_dev_rx_queue_setup(): sw_ring=0x7fc5ac67cc80 hw_ring=0x7fc5ab590500 dma_addr=0x67390500 [ 0.035792] PMD: ixgbe_dev_rx_queue_setup(): Rx Burst Bulk Alloc Preconditions are satisfied. Rx Burst Bulk Alloc function will be used on port=1, queue=1. [ 0.035798] PMD: ixgbe_dev_rx_queue_setup(): Vector rx enabled, please make sure RX burst size no less than 32. [ 0.035810] PMD: ixgbe_dev_tx_queue_setup(): sw_ring=0x7fc5ac67ab40 hw_ring=0x7fc5ab5a0580 dma_addr=0x673a0580 [ 5.886027] PMD: ixgbe_dev_link_status_print(): Port 0: Link Down [ 5.886064] PMD: ixgbe_dev_link_status_print(): Port 0: Link Up - speed 10000 Mbps - full-duplex [ 6.234150] PMD: ixgbe_dev_link_status_print(): Port 1: Link Up - speed 0 Mbps - half-duplex [ 6.234196] PMD: ixgbe_dev_link_status_print(): Port 1: Link Down [ 6.886098] PMD: ixgbe_dev_link_status_print(): Port 0: Link Up - speed 10000 Mbps - full-duplex [ 10.234776] PMD: ixgbe_dev_link_status_print(): Port 1: Link Down [ 11.818676] PMD: ixgbe_dev_link_status_print(): Port 1: Link Up - speed 10000 Mbps - full-duplex [ 12.818758] PMD: ixgbe_dev_link_status_print(): Port 1: Link Up - speed 10000 Mbps - full-duplex Application trace shows lots of packets, then everything stops.