diff options
| author | Jarod Wilson <jarod@redhat.com> | 2016-10-17 15:54:15 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-10-18 11:34:21 -0400 |
| commit | f58f0817d78a8418f1f33a30be09fcb34184cc94 (patch) | |
| tree | b5c1f4dabb833f38092495b74ea7e1402d320d93 /drivers/net/ethernet/tile/tilegx.c | |
| parent | 3d5d96acfeb9ddab99e0216109cbc034a65fd490 (diff) | |
| download | linux-f58f0817d78a8418f1f33a30be09fcb34184cc94.tar.bz2 | |
ethernet/tile: use core min/max MTU checking
tilegx: min_mtu 68, max_mtu 1500 or 9000, depending on modparam
- remove tile_net_change_mtu now that it is fully redundant
tilepro: min_mtu 68, max_mtu 1500
- hardware supports jumbo packets up to 10226, but it's not implemented or
tested yet, according to code comments
CC: netdev@vger.kernel.org
CC: Chris Metcalf <cmetcalf@mellanox.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/tile/tilegx.c')
| -rw-r--r-- | drivers/net/ethernet/tile/tilegx.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/drivers/net/ethernet/tile/tilegx.c b/drivers/net/ethernet/tile/tilegx.c index 11213a38c795..0aaf975bb347 100644 --- a/drivers/net/ethernet/tile/tilegx.c +++ b/drivers/net/ethernet/tile/tilegx.c @@ -59,6 +59,9 @@ /* Maximum number of packets to handle per "poll". */ #define TILE_NET_WEIGHT 64 +/* Maximum Jumbo Packet MTU */ +#define TILE_JUMBO_MAX_MTU 9000 + /* Number of entries in each iqueue. */ #define IQUEUE_ENTRIES 512 @@ -2101,17 +2104,6 @@ static int tile_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) return -EOPNOTSUPP; } -/* Change the MTU. */ -static int tile_net_change_mtu(struct net_device *dev, int new_mtu) -{ - if (new_mtu < 68) - return -EINVAL; - if (new_mtu > ((jumbo_num != 0) ? 9000 : 1500)) - return -EINVAL; - dev->mtu = new_mtu; - return 0; -} - /* Change the Ethernet address of the NIC. * * The hypervisor driver does not support changing MAC address. However, @@ -2154,7 +2146,6 @@ static const struct net_device_ops tile_net_ops = { .ndo_start_xmit = tile_net_tx, .ndo_select_queue = tile_net_select_queue, .ndo_do_ioctl = tile_net_ioctl, - .ndo_change_mtu = tile_net_change_mtu, .ndo_tx_timeout = tile_net_tx_timeout, .ndo_set_mac_address = tile_net_set_mac_address, #ifdef CONFIG_NET_POLL_CONTROLLER @@ -2174,7 +2165,11 @@ static void tile_net_setup(struct net_device *dev) ether_setup(dev); dev->netdev_ops = &tile_net_ops; dev->watchdog_timeo = TILE_NET_TIMEOUT; - dev->mtu = 1500; + + /* MTU range: 68 - 1500 or 9000 */ + dev->mtu = ETH_DATA_LEN; + dev->min_mtu = ETH_MIN_MTU; + dev->max_mtu = jumbo_num ? TILE_JUMBO_MAX_MTU : ETH_DATA_LEN; features |= NETIF_F_HW_CSUM; features |= NETIF_F_SG; |