e1000: Fixes for packet split related issues

Fixes for packet split related issues
  * On platforms where PAGE_SIZE > 4K, driver will use only required number of
    pages compared to always using 3 pages.
  * Packet split won't be used if the PAGE_SIZE is > 16K
  * Adds a statistics counter to splits.
  * Setting the non Null ptr to zero sized buffers to solve packet split
    receive descriptor error
  * When the no of pages needed is calculated, the header buffer is not
    included for a given MTU.

Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/e1000/e1000_ethtool.c b/drivers/net/e1000/e1000_ethtool.c
index 6e7e34f59a34..183b583df1d7 100644
--- a/drivers/net/e1000/e1000_ethtool.c
+++ b/drivers/net/e1000/e1000_ethtool.c
@@ -91,7 +91,8 @@ static const struct e1000_stats e1000_gstrings_stats[] = {
         { "tx_flow_control_xoff", E1000_STAT(stats.xofftxc) },
         { "rx_long_byte_count", E1000_STAT(stats.gorcl) },
         { "rx_csum_offload_good", E1000_STAT(hw_csum_good) },
-        { "rx_csum_offload_errors", E1000_STAT(hw_csum_err) }
+        { "rx_csum_offload_errors", E1000_STAT(hw_csum_err) },
+        { "rx_header_split", E1000_STAT(rx_hdr_split) },
 };
 #define E1000_STATS_LEN \
         sizeof(e1000_gstrings_stats) / sizeof(struct e1000_stats)