igb: reenable CRC stripping in hardware

We can remove a clunky workaround for not having the hardware
strip the CRC. 82575 silicon as well as the older PCI Express
e1000e hardware all work OK in this respect.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index e8ef5410591a..ae329c02eaef 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -1664,10 +1664,12 @@ static void igb_setup_rctl(struct igb_adapter *adapter)
                 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
                 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
 
-        /* disable the stripping of CRC because it breaks
-         * BMC firmware connected over SMBUS
-        rctl |= E1000_RCTL_SECRC;
+        /*
+         * enable stripping of CRC. It's unlikely this will break BMC
+         * redirection as it did with e1000. Newer features require
+         * that the HW strips the CRC.
         */
+        rctl |= E1000_RCTL_SECRC;
 
         rctl &= ~E1000_RCTL_SBP;
 
@@ -3743,7 +3745,6 @@ static bool igb_clean_rx_irq_adv(struct igb_ring *rx_ring,
                         }
                 }
 send_up:
-                pskb_trim(skb, skb->len - 4);
                 i++;
                 if (i == rx_ring->count)
                         i = 0;