e1000e: Fix ethtool offline tests for 82579 parts

Changes to the rar_entry_count value require a change to the indexing
used to access the SHRA[H|L] registers when testing them with
'ethtool -t <iface> offline'

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/net/ethernet/intel/e1000e/ethtool.c b/drivers/net/ethernet/intel/e1000e/ethtool.c
index 7a479022a8c6..3c2898d0c2aa 100644
--- a/drivers/net/ethernet/intel/e1000e/ethtool.c
+++ b/drivers/net/ethernet/intel/e1000e/ethtool.c
@@ -917,15 +917,21 @@ static int e1000_reg_test(struct e1000_adapter *adapter, u64 *data)
                 }
                 if (mac->type == e1000_pch2lan) {
                         /* SHRAH[0,1,2] different than previous */
-                        if (i == 7)
+                        if (i == 1)
                                 mask &= 0xFFF4FFFF;
                         /* SHRAH[3] different than SHRAH[0,1,2] */
-                        if (i == 10)
+                        if (i == 4)
                                 mask |= (1 << 30);
+                        /* RAR[1-6] owned by management engine - skipping */
+                        if (i > 0)
+                                i += 6;
                 }
 
                 REG_PATTERN_TEST_ARRAY(E1000_RA, ((i << 1) + 1), mask,
                                        0xFFFFFFFF);
+                /* reset index to actual value */
+                if ((mac->type == e1000_pch2lan) && (i > 6))
+                        i -= 6;
         }
 
         for (i = 0; i < mac->mta_reg_count; i++)