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Commit cd6be628 authored by Alexander Sverdlin's avatar Alexander Sverdlin Committed by Greg Kroah-Hartman
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net: ethernet: octeon_mgmt: Account for second possible VLAN header 



[ 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: 109cc165 ("ethernet/cavium: use core min/max MTU checking")
Signed-off-by: default avatarAlexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b0b4aca6

drivers/net/ethernet/cavium/octeon/octeon_mgmt.c

+1 −1
Original line number Diff line number Diff line
@@ -1497,7 +1497,7 @@ static int octeon_mgmt_probe(struct platform_device *pdev) 
	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);