ixgbe: Only set gso_type to SKB_GSO_TCPV4 as RSC does not support IPv6

The original fix that was applied for setting gso_type required more change
than necessary because it was assumed ixgbe does RSC on IPv6 frames and this
is not correct.  RSC is only supported with IPv4/TCP frames only.  As such we
can simplify the fix and avoid the unnecessary move of eth_type_trans.

The previous patch "ixgbe: fix gso type" and this patch reduce the entire fix
to one line that sets gso_type to TCPV4 if the frame is RSC.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index e1b2d22..b3e3294 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -1401,10 +1401,7 @@ static void ixgbe_set_rsc_gso_size(struct ixgbe_ring *ring,
        /* set gso_size to avoid messing up TCP MSS */
        skb_shinfo(skb)->gso_size = DIV_ROUND_UP((skb->len - hdr_len),
                                                 IXGBE_CB(skb)->append_cnt);
-       if (skb->protocol == __constant_htons(ETH_P_IPV6))
-               skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
-       else
-               skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
+       skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
 }
 
 static void ixgbe_update_rsc_stats(struct ixgbe_ring *rx_ring,
@@ -1439,8 +1436,6 @@ static void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring,
 {
        struct net_device *dev = rx_ring->netdev;
 
-       skb->protocol = eth_type_trans(skb, dev);
-
        ixgbe_update_rsc_stats(rx_ring, skb);
 
        ixgbe_rx_hash(rx_ring, rx_desc, skb);
@@ -1456,6 +1451,8 @@ static void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring,
        }
 
        skb_record_rx_queue(skb, rx_ring->queue_index);
+
+       skb->protocol = eth_type_trans(skb, dev);
 }
 
 static void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector,