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Date: Mon, 08 Sep 2008 21:47:51 -0700 From: Jeff Kirsher <jeffrey.t.kirsher@...el.com> To: jeff@...zik.org Cc: netdev@...r.kernel.org, davem@...emloft.net, Jesse Brandeburg <jesse.brandeburg@...el.com>, Jeff Kirsher <jeffrey.t.kirsher@...el.com> Subject: [NET-NEXT PATCH 07/24] ixgbe: limit small mtu to minimum for ipv4 support From: Jesse Brandeburg <jesse.brandeburg@...el.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com> --- drivers/net/ixgbe/ixgbe_main.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index cfaa3ca..2c8895e 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -2839,8 +2839,8 @@ static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) struct ixgbe_adapter *adapter = netdev_priv(netdev); int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; - if ((max_frame < (ETH_ZLEN + ETH_FCS_LEN)) || - (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) + /* MTU < 68 is an error and causes problems on some kernels */ + if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) return -EINVAL; DPRINTK(PROBE, INFO, "changing MTU from %d to %d\n", -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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