diff options
| author |   Jarod Wilson <jarod@redhat.com> | 2016-10-20 13:55:17 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-10-20 14:51:08 -0400 |
| commit | f77f0aee4da4beff5042b49913e856539f23adff (patch) | |
| tree | 841fd40b4a4953dd91cdac947964bc78571fd7ff /drivers/net/usb/smsc75xx.c | |
| parent | ethernet: use net core MTU range checking in more drivers (diff) | |
| download | linux-dev-f77f0aee4da4beff5042b49913e856539f23adff.tar.xz linux-dev-f77f0aee4da4beff5042b49913e856539f23adff.zip | |
net: use core MTU range checking in USB NIC drivers
usbnet:
- Remove stale new_mtu <= 0 check in usbnet.c
- Set min_mtu = 0, max_mtu = 65535 (sub-drivers must set their own
max_mtu and/or min_mtu as needed)
r8152:
- Set appropriate max_mtu for different variants (1500 or 9194)
lan78xx:
- Set max_mtu = 9000
asix_driver:
- max_mtu = 16384 for ax88178 variant
ax88179:
- max_mtu = 4088
cdc_ncm:
- max_mtu from hardware
cdc-phonet:
- min_mtu = 6, max_mtu = 65541
sierra_net:
- max_mtu = 1500, call usbnet_change_mtu directly
- sierra_net_change_mtu checked for MTU > 1500, then called
usbnet_change_mtu, but if we set max_mtu to let the network core handle
the range check, then we can simply call usbnet_change_mtu directly
smsc75xx:
- max_mtu = 9000
CC: netdev@vger.kernel.org
CC: Woojung Huh <woojung.huh@microchip.com>
CC: Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>
CC: Hayes Wang <hayeswang@realtek.com>
CC: Oliver Neukum <oneukum@suse.com>
CC: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/usb/smsc75xx.c')
| -rw-r--r-- | drivers/net/usb/smsc75xx.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index 9af9799935db..0b17b40d7a4f 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -925,9 +925,6 @@ static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu) struct usbnet *dev = netdev_priv(netdev); int ret; - if (new_mtu > MAX_SINGLE_PACKET_SIZE) - return -EINVAL; - ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); if (ret < 0) { netdev_warn(dev->net, "Failed to set mac rx frame length\n"); @@ -1448,6 +1445,7 @@ static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) dev->net->flags |= IFF_MULTICAST; dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; + dev->net->max_mtu = MAX_SINGLE_PACKET_SIZE; return 0; } |