lkml.org 
[lkml]   [2019]   [Nov]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 4.14 004/105] net: ethernet: octeon_mgmt: Account for second possible VLAN header
    Date
    From: Alexander Sverdlin <alexander.sverdlin@nokia.com>

    [ Upstream commit e4dd5608033efe7b6030cde359bfdbaeb73bc22d ]

    Octeon's input ring-buffer entry has 14 bits-wide size field, so to account
    for second possible VLAN header max_mtu must be further reduced.

    Fixes: 109cc16526c6d ("ethernet/cavium: use core min/max MTU checking")
    Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/net/ethernet/cavium/octeon/octeon_mgmt.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c
    +++ b/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c
    @@ -1497,7 +1497,7 @@ static int octeon_mgmt_probe(struct plat
    netdev->ethtool_ops = &octeon_mgmt_ethtool_ops;

    netdev->min_mtu = 64 - OCTEON_MGMT_RX_HEADROOM;
    - netdev->max_mtu = 16383 - OCTEON_MGMT_RX_HEADROOM;
    + netdev->max_mtu = 16383 - OCTEON_MGMT_RX_HEADROOM - VLAN_HLEN;

    mac = of_get_mac_address(pdev->dev.of_node);


    \
     
     \ /
      Last update: 2019-11-11 19:36    [W:4.180 / U:0.016 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site