ixgbevf: Reduce size of maximum rx buffer

[firefly-linux-kernel-4.4.55.git] / drivers / net / ethernet / intel / ixgbevf / ixgbevf_main.c

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 00f9698e86ae6da1c4e1d2587dcf6b28795ca4d6..9d88153023633c5426b9b1841b269d7738f98c34 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -1087,20 +1087,20 @@ static void ixgbevf_set_rx_buffer_len(struct ixgbevf_adapter *adapter)
        max_frame += VLAN_HLEN;
 
        /*
-        * Make best use of allocation by using all but 1K of a
-        * power of 2 allocation that will be used for skb->head.
+        * Allocate buffer sizes that fit well into 32K and
+        * take into account max frame size of 9.5K
         */
        if ((hw->mac.type == ixgbe_mac_X540_vf) &&
            (max_frame <= MAXIMUM_ETHERNET_VLAN_SIZE))
                rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
-       else if (max_frame <= IXGBEVF_RXBUFFER_3K)
-               rx_buf_len = IXGBEVF_RXBUFFER_3K;
-       else if (max_frame <= IXGBEVF_RXBUFFER_7K)
-               rx_buf_len = IXGBEVF_RXBUFFER_7K;
-       else if (max_frame <= IXGBEVF_RXBUFFER_15K)
-               rx_buf_len = IXGBEVF_RXBUFFER_15K;
+       else if (max_frame <= IXGBEVF_RXBUFFER_2K)
+               rx_buf_len = IXGBEVF_RXBUFFER_2K;
+       else if (max_frame <= IXGBEVF_RXBUFFER_4K)
+               rx_buf_len = IXGBEVF_RXBUFFER_4K;
+       else if (max_frame <= IXGBEVF_RXBUFFER_8K)
+               rx_buf_len = IXGBEVF_RXBUFFER_8K;
        else
-               rx_buf_len = IXGBEVF_MAX_RXBUFFER;
+               rx_buf_len = IXGBEVF_RXBUFFER_10K;
 
        for (i = 0; i < adapter->num_rx_queues; i++)
                adapter->rx_ring[i].rx_buf_len = rx_buf_len;