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| author | Jarod Wilson <jarod@redhat.com> | 2016-10-17 15:54:05 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-10-18 11:34:18 -0400 |
| commit | 91c527a55664ddf4bee26673a35f91748dae4142 (patch) | |
| tree | 5182f5a33b97804b76af6e0906575dd0044b2e22 /drivers/net/ethernet/intel/e1000 | |
| parent | e1c6dccaf3af291488fbad155d7ee6bc29db262a (diff) | |
| download | linux-stable-91c527a55664ddf4bee26673a35f91748dae4142.tar.gz linux-stable-91c527a55664ddf4bee26673a35f91748dae4142.tar.bz2 linux-stable-91c527a55664ddf4bee26673a35f91748dae4142.zip | |
ethernet/intel: use core min/max MTU checking
e100: min_mtu 68, max_mtu 1500
- remove e100_change_mtu entirely, is identical to old eth_change_mtu,
and no longer serves a purpose. No need to set min_mtu or max_mtu
explicitly, as ether_setup() will already set them to 68 and 1500.
e1000: min_mtu 46, max_mtu 16110
e1000e: min_mtu 68, max_mtu varies based on adapter
fm10k: min_mtu 68, max_mtu 15342
- remove fm10k_change_mtu entirely, does nothing now
i40e: min_mtu 68, max_mtu 9706
i40evf: min_mtu 68, max_mtu 9706
igb: min_mtu 68, max_mtu 9216
- There are two different "max" frame sizes claimed and both checked in
the driver, the larger value wasn't relevant though, so I've set max_mtu
to the smaller of the two values here to retain identical behavior.
igbvf: min_mtu 68, max_mtu 9216
- Same issue as igb duplicated
ixgb: min_mtu 68, max_mtu 16114
- Also remove pointless old == new check, as that's done in dev_set_mtu
ixgbe: min_mtu 68, max_mtu 9710
ixgbevf: min_mtu 68, max_mtu dependent on hardware/firmware
- Some hw can only handle up to max_mtu 1504 on a vf, others 9710
CC: netdev@vger.kernel.org
CC: intel-wired-lan@lists.osuosl.org
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/intel/e1000')
| -rw-r--r-- | drivers/net/ethernet/intel/e1000/e1000_main.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c index f42129d09e2c..33076fa98002 100644 --- a/drivers/net/ethernet/intel/e1000/e1000_main.c +++ b/drivers/net/ethernet/intel/e1000/e1000_main.c @@ -1085,6 +1085,10 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) hw->subsystem_vendor_id != PCI_VENDOR_ID_VMWARE) netdev->priv_flags |= IFF_UNICAST_FLT; + /* MTU range: 46 - 16110 */ + netdev->min_mtu = ETH_ZLEN - ETH_HLEN; + netdev->max_mtu = MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN); + adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); /* initialize eeprom parameters */ @@ -3549,13 +3553,7 @@ static int e1000_change_mtu(struct net_device *netdev, int new_mtu) { struct e1000_adapter *adapter = netdev_priv(netdev); struct e1000_hw *hw = &adapter->hw; - int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; - - if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || - (max_frame > MAX_JUMBO_FRAME_SIZE)) { - e_err(probe, "Invalid MTU setting\n"); - return -EINVAL; - } + int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; /* Adapter-specific max frame size limits. */ switch (hw->mac_type) { |