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ethernet/tile: use core min/max MTU checking

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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>
This commit is contained in:
Jarod Wilson 2016-10-17 15:54:15 -04:00 committed by David S. Miller
parent 3d5d96acfe
commit f58f0817d7
2 changed files with 13 additions and 35 deletions
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21
drivers/net/ethernet/tile/tilegx.c
View File

@ -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;

27
drivers/net/ethernet/tile/tilepro.c
View File

@ -87,7 +87,7 @@
/* This should be 1500 if "jumbo" is not set in LIPP. */
/* This should be at most 10226 (10240 - 14) if "jumbo" is set in LIPP. */
/* ISSUE: This has not been thoroughly tested (except at 1500). */
#define TILE_NET_MTU 1500
#define TILE_NET_MTU ETH_DATA_LEN
/* HACK: Define this to verify incoming packets. */
/* #define TILE_NET_VERIFY_INGRESS */
@ -2095,26 +2095,6 @@ static struct rtnl_link_stats64 *tile_net_get_stats64(struct net_device *dev,
}
/*
* Change the "mtu".
*
* The "change_mtu" method is usually not needed.
* If you need it, it must be like this.
*/
static int tile_net_change_mtu(struct net_device *dev, int new_mtu)
{
PDEBUG("tile_net_change_mtu()\n");
/* Check ranges. */
if ((new_mtu < 68) || (new_mtu > 1500))
return -EINVAL;
/* Accept the value. */
dev->mtu = new_mtu;
return 0;
}
/*
* Change the Ethernet Address of the NIC.
@ -2229,7 +2209,6 @@ static const struct net_device_ops tile_net_ops = {
.ndo_start_xmit = tile_net_tx,
.ndo_do_ioctl = tile_net_ioctl,
.ndo_get_stats64 = tile_net_get_stats64,
.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
@ -2252,7 +2231,11 @@ static void tile_net_setup(struct net_device *dev)
dev->netdev_ops = &tile_net_ops;
dev->watchdog_timeo = TILE_NET_TIMEOUT;
dev->tx_queue_len = TILE_NET_TX_QUEUE_LEN;
/* MTU range: 68 - 1500 */
dev->mtu = TILE_NET_MTU;
dev->min_mtu = ETH_MIN_MTU;
dev->max_mtu = TILE_NET_MTU;
features |= NETIF_F_HW_CSUM;
features |= NETIF_F_SG;