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| author | Jarod Wilson <jarod@redhat.com> | 2016-10-17 15:54:03 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-10-18 11:34:18 -0400 |
| commit | 67bef942801842ce7486a23dd3940e320f217319 (patch) | |
| tree | 72f6631b36ce03e0a8ea2671f511a3181ca22e3a /drivers/net/ethernet/atheros/atl1e | |
| parent | 60d2d8dd9e1a2580541a3d28eb90d092381e2153 (diff) | |
| download | linux-67bef942801842ce7486a23dd3940e320f217319.tar.gz linux-67bef942801842ce7486a23dd3940e320f217319.tar.bz2 linux-67bef942801842ce7486a23dd3940e320f217319.zip | |
ethernet/atheros: use core min/max MTU checking
atl2: min_mtu 40, max_mtu 1504
- Remove a few redundant defines that already have equivalents in
if_ether.h.
atl1: min_mtu 42, max_mtu 10218
atl1e: min_mtu 42, max_mtu 8170
atl1c: min_mtu 42, max_mtu 6122/1500
- GbE hardware gets a max_mtu of 6122, slower hardware gets 1500.
alx: min_mtu 34, max_mtu 9256
- Not so sure that minimum MTU number is really what was intended, but
that's what the math actually makes it out to be, due to max_frame
manipulations and comparison in alx_change_mtu, rather than just
comparing new_mtu. (I think 68 was the intended min_mtu value).
CC: netdev@vger.kernel.org
CC: Jay Cliburn <jcliburn@gmail.com>
CC: Chris Snook <chris.snook@gmail.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/atheros/atl1e')
| -rw-r--r-- | drivers/net/ethernet/atheros/atl1e/atl1e_main.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c index 974713b19ab6..e96091b652a7 100644 --- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c +++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c @@ -439,16 +439,10 @@ static int atl1e_set_features(struct net_device *netdev, static int atl1e_change_mtu(struct net_device *netdev, int new_mtu) { struct atl1e_adapter *adapter = netdev_priv(netdev); - int old_mtu = netdev->mtu; int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; - if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || - (max_frame > MAX_JUMBO_FRAME_SIZE)) { - netdev_warn(adapter->netdev, "invalid MTU setting\n"); - return -EINVAL; - } /* set MTU */ - if (old_mtu != new_mtu && netif_running(netdev)) { + if (netif_running(netdev)) { while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) msleep(1); netdev->mtu = new_mtu; @@ -2272,6 +2266,10 @@ static int atl1e_init_netdev(struct net_device *netdev, struct pci_dev *pdev) netdev->netdev_ops = &atl1e_netdev_ops; netdev->watchdog_timeo = AT_TX_WATCHDOG; + /* MTU range: 42 - 8170 */ + netdev->min_mtu = ETH_ZLEN - (ETH_HLEN + VLAN_HLEN); + netdev->max_mtu = MAX_JUMBO_FRAME_SIZE - + (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); atl1e_set_ethtool_ops(netdev); netdev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO | |