igb: remove open-coded skb_cow_head

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 30198185d19ae413850b0f4e11c4a4ddb8d75406..720ad122b26d63ee20a48ee1cf4468733a2e2ae5 100644 (file)
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -4605,6 +4605,7 @@ static int igb_tso(struct igb_ring *tx_ring,
        struct sk_buff *skb = first->skb;
        u32 vlan_macip_lens, type_tucmd;
        u32 mss_l4len_idx, l4len;
+       int err;
 
        if (skb->ip_summed != CHECKSUM_PARTIAL)
                return 0;
@@ -4612,11 +4613,9 @@ static int igb_tso(struct igb_ring *tx_ring,
        if (!skb_is_gso(skb))
                return 0;
 
-       if (skb_header_cloned(skb)) {
-               int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
-               if (err)
-                       return err;
-       }
+       err = skb_cow_head(skb, 0);
+       if (err < 0)
+               return err;
 
        /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
        type_tucmd = E1000_ADVTXD_TUCMD_L4T_TCP;