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Commit 8a4d05b0 authored by Jason Xing's avatar Jason Xing Committed by Greg Kroah-Hartman
Browse files

i40e: add double of VLAN header when computing the max MTU 



commit ce45ffb815e8e238f05de1630be3969b6bb15e4e upstream.

Include the second VLAN HLEN into account when computing the maximum
MTU size as other drivers do.

Fixes: 0c8493d9 ("i40e: add XDP support for pass and drop actions")
Signed-off-by: default avatarJason Xing <kernelxing@tencent.com>
Reviewed-by: default avatarAlexander Duyck <alexanderduyck@fb.com>
Tested-by: Chandan Kumar Rout <chandanx.rout@intel.com> (A Contingent Worker at Intel)
Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fdeb4c25

drivers/net/ethernet/intel/i40e/i40e_main.c

+1 −1
Original line number Diff line number Diff line
@@ -2702,7 +2702,7 @@ static int i40e_change_mtu(struct net_device *netdev, int new_mtu) 
	struct i40e_pf *pf = vsi->back;



	if (i40e_enabled_xdp_vsi(vsi)) {

		int frame_size = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;

		int frame_size = new_mtu + I40E_PACKET_HDR_PAD;



		if (frame_size > i40e_max_xdp_frame_size(vsi))

			return -EINVAL;