diff options
Diffstat (limited to 'drivers/net/e1000e/ich8lan.c')
| -rw-r--r-- | drivers/net/e1000e/ich8lan.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c index 9b434c0cbc9..ce1dbfdca11 100644 --- a/drivers/net/e1000e/ich8lan.c +++ b/drivers/net/e1000e/ich8lan.c @@ -758,7 +758,13 @@ static s32 e1000_get_variants_ich8lan(struct e1000_adapter *adapter) if (rc) return rc; - if (adapter->hw.phy.type == e1000_phy_ife) { + /* + * Disable Jumbo Frame support on parts with Intel 10/100 PHY or + * on parts with MACsec enabled in NVM (reflected in CTRL_EXT). + */ + if ((adapter->hw.phy.type == e1000_phy_ife) || + ((adapter->hw.mac.type >= e1000_pch2lan) && + (!(er32(CTRL_EXT) & E1000_CTRL_EXT_LSECCK)))) { adapter->flags &= ~FLAG_HAS_JUMBO_FRAMES; adapter->max_hw_frame_size = ETH_FRAME_LEN + ETH_FCS_LEN; } |