e1000: FIX: Don't limit descriptor size to 4kb for PCI-E adapters

82571 and newer chispets don't need to limit desc. length to 4kb and can
handle 8kb sizes.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>

diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 7362e1240178244fbf2892c5f51abf4caac0bbba..e75909ee6d852800520ca2357dd164e3afb4a34b 100644 (file)
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2992,6 +2992,11 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
                return NETDEV_TX_OK;
        }
 
+       /* 82571 and newer doesn't need the workaround that limited descriptor
+        * length to 4kB */
+       if (adapter->hw.mac_type >= e1000_82571)
+               max_per_txd = 8192;
+
 #ifdef NETIF_F_TSO
        mss = skb_shinfo(skb)->gso_size;
        /* The controller does a simple calculation to