net/ixgbe: fix wrong PBA setting

The datasheet says, if using MSI-X mode, the PBA support
bit of the GPIE register must be set to 1.
DPDK uses polling mode, we cannot hit this issue in the
scenario DPDK PF + DPDK VF. If we use DPDK PF + kernel VF,
as the kernel driver uses interrpt mode, VF may hit RX hang
after running hours.

Fixes: 00e30184daa0 ("ixgbe: add PF support")
Cc: stable@dpdk.org
Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
Acked-by: Wei Dai <wei.dai@intel.com>

diff --git a/drivers/net/ixgbe/ixgbe_pf.c b/drivers/net/ixgbe/ixgbe_pf.c
index 44ab450..9b0bd75 100644 (file)
--- a/drivers/net/ixgbe/ixgbe_pf.c
+++ b/drivers/net/ixgbe/ixgbe_pf.c
@@ -244,7 +244,7 @@ int ixgbe_pf_host_configure(struct rte_eth_dev *eth_dev)
 
        gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
        gpie &= ~IXGBE_GPIE_VTMODE_MASK;
-       gpie |= IXGBE_GPIE_MSIX_MODE;
+       gpie |= IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT;
 
        switch (RTE_ETH_DEV_SRIOV(eth_dev).active) {
        case ETH_64_POOLS: