diff options
| author | Jesse Brandeburg <jesse.brandeburg@intel.com> | 2008-07-08 15:51:32 -0700 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-07-11 01:20:27 -0400 |
| commit | a65a604a01f710defe01f2322e108f4d8c20f6ce (patch) | |
| tree | ce952508ead861ef623ed88b5a98ac90fc2ac5cd /drivers/net/ixgb | |
| parent | 72ab51954d108e4999b3c958ae21da731d2d789a (diff) | |
ixgb: don't allow too small MTU
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/ixgb')
| -rw-r--r-- | drivers/net/ixgb/ixgb_main.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c index 60cad65dbc2e..0e72dadf8b70 100644 --- a/drivers/net/ixgb/ixgb_main.c +++ b/drivers/net/ixgb/ixgb_main.c @@ -1566,9 +1566,9 @@ ixgb_change_mtu(struct net_device *netdev, int new_mtu) int max_frame = new_mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; int old_max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; - - if((max_frame < IXGB_MIN_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) - || (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) { + /* MTU < 68 is an error for IPv4 traffic, just don't allow it */ + if ((new_mtu < 68) || + (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) { DPRINTK(PROBE, ERR, "Invalid MTU setting %d\n", new_mtu); return -EINVAL; } |