Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[net-next-2.6.git] / drivers / net / e1000e / netdev.c

diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 5d5850b556cf7d2dbe59ea37ec5b31b6409ea872..c69563c3ce96168bbe37d746d982204cc91d7323 100644 (file)
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -2705,6 +2705,16 @@ static void e1000_setup_rctl(struct e1000_adapter *adapter)
        u32 psrctl = 0;
        u32 pages = 0;
 
+       /* Workaround Si errata on 82579 - configure jumbo frame flow */
+       if (hw->mac.type == e1000_pch2lan) {
+               s32 ret_val;
+
+               if (adapter->netdev->mtu > ETH_DATA_LEN)
+                       ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true);
+               else
+                       ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false);
+       }
+
        /* Program MC offset vector base */
        rctl = er32(RCTL);
        rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
@@ -2745,16 +2755,6 @@ static void e1000_setup_rctl(struct e1000_adapter *adapter)
                e1e_wphy(hw, 22, phy_data);
        }
 
-       /* Workaround Si errata on 82579 - configure jumbo frame flow */
-       if (hw->mac.type == e1000_pch2lan) {
-               s32 ret_val;
-
-               if (rctl & E1000_RCTL_LPE)
-                       ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true);
-               else
-                       ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false);
-       }
-
        /* Setup buffer sizes */
        rctl &= ~E1000_RCTL_SZ_4096;
        rctl |= E1000_RCTL_BSEX;
@@ -4813,6 +4813,15 @@ static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
                return -EINVAL;
        }
 
+       /* Jumbo frame workaround on 82579 requires CRC be stripped */
+       if ((adapter->hw.mac.type == e1000_pch2lan) &&
+           !(adapter->flags2 & FLAG2_CRC_STRIPPING) &&
+           (new_mtu > ETH_DATA_LEN)) {
+               e_err("Jumbo Frames not supported on 82579 when CRC "
+                     "stripping is disabled.\n");
+               return -EINVAL;
+       }
+
        /* 82573 Errata 17 */
        if (((adapter->hw.mac.type == e1000_82573) ||
             (adapter->hw.mac.type == e1000_82574)) &&