diff options
Diffstat (limited to 'drivers/net/ethernet/intel/igb/igb_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_main.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index aa78c10a2ec3..615627590259 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2396,7 +2396,8 @@ static int __devinit igb_sw_init(struct igb_adapter *adapter) adapter->rx_itr_setting = IGB_DEFAULT_ITR; adapter->tx_itr_setting = IGB_DEFAULT_ITR; - adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; + adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + + VLAN_HLEN; adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; spin_lock_init(&adapter->stats64_lock); @@ -2962,16 +2963,19 @@ static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size, **/ static void igb_rlpml_set(struct igb_adapter *adapter) { - u32 max_frame_size; + u32 max_frame_size = adapter->max_frame_size; struct e1000_hw *hw = &adapter->hw; u16 pf_id = adapter->vfs_allocated_count; - max_frame_size = adapter->max_frame_size + VLAN_TAG_SIZE; - - /* if vfs are enabled we set RLPML to the largest possible request - * size and set the VMOLR RLPML to the size we need */ if (pf_id) { igb_set_vf_rlpml(adapter, max_frame_size, pf_id); + /* + * If we're in VMDQ or SR-IOV mode, then set global RLPML + * to our max jumbo frame size, in case we need to enable + * jumbo frames on one of the rings later. + * This will not pass over-length frames into the default + * queue because it's gated by the VMOLR.RLPML. + */ max_frame_size = MAX_JUMBO_FRAME_SIZE; } @@ -4461,7 +4465,7 @@ static int igb_change_mtu(struct net_device *netdev, int new_mtu) { struct igb_adapter *adapter = netdev_priv(netdev); struct pci_dev *pdev = adapter->pdev; - int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; + int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; u32 rx_buffer_len, i; if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { @@ -4469,6 +4473,7 @@ static int igb_change_mtu(struct net_device *netdev, int new_mtu) return -EINVAL; } +#define MAX_STD_JUMBO_FRAME_SIZE 9238 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { dev_err(&pdev->dev, "MTU > 9216 not supported.\n"); return -EINVAL; |