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Commit ee5b1fac authored by Veerasenareddy Burru's avatar Veerasenareddy Burru Committed by David S. Miller
Browse files

liquidio: make VF driver notify NIC firmware of MTU change 



Signed-off-by: default avatarVeerasenareddy Burru <veerasenareddy.burru@cavium.com>
Signed-off-by: default avatarFelix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ad530a1d

drivers/net/ethernet/cavium/liquidio/lio_vf_main.c

+22 −5
Original line number Diff line number Diff line
@@ -1544,14 +1544,31 @@ static struct net_device_stats *liquidio_get_stats(struct net_device *netdev) 
 */

static int liquidio_change_mtu(struct net_device *netdev, int new_mtu)

{

	struct lio *lio = GET_LIO(netdev);

	struct octnic_ctrl_pkt nctrl;

	struct octeon_device *oct;

	struct lio *lio;

	int ret = 0;



	lio->mtu = new_mtu;

	lio = GET_LIO(netdev);

	oct = lio->oct_dev;



	memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));



	netif_info(lio, probe, lio->netdev, "MTU Changed from %d to %d\n",

		   netdev->mtu, new_mtu);

	nctrl.ncmd.u64 = 0;

	nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MTU;

	nctrl.ncmd.s.param1 = new_mtu;

	nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;

	nctrl.wait_time = LIO_CMD_WAIT_TM;

	nctrl.netpndev = (u64)netdev;

	nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;



	ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);

	if (ret < 0) {

		dev_err(&oct->pci_dev->dev, "Failed to set MTU\n");

		return -EIO;

	}



	netdev->mtu = new_mtu;

	lio->mtu = new_mtu;



	return 0;

}