net/ixgbe: fix segfault in configuring VF VLAN strip

This patch fixes a segment fault in ixgbevf_vlan_offload_set( )
when a Rx queue with index < max_rx_queues is not setup.
For such queue, rxq = dev->data->rx_queues[i] is null pointer.

Fixes: 860a94d3c692 ("net/ixgbe: support VLAN strip per queue offloading in VF")

Signed-off-by: Wei Dai <wei.dai@intel.com>
Tested-by: Xueqin Lin <xueqin.lin@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index a5e2fc0..33ee52e 100644 (file)
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -5184,15 +5184,13 @@ ixgbevf_vlan_strip_queue_set(struct rte_eth_dev *dev, uint16_t queue, int on)
 static int
 ixgbevf_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 {
-       struct ixgbe_hw *hw =
-               IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
        struct ixgbe_rx_queue *rxq;
        uint16_t i;
        int on = 0;
 
        /* VF function only support hw strip feature, others are not support */
        if (mask & ETH_VLAN_STRIP_MASK) {
-               for (i = 0; i < hw->mac.max_rx_queues; i++) {
+               for (i = 0; i < dev->data->nb_rx_queues; i++) {
                        rxq = dev->data->rx_queues[i];
                        on = !!(rxq->offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
                        ixgbevf_vlan_strip_queue_set(dev, i, on);