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liquidio: make VF driver notify NIC firmware of MTU change

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Signed-off-by: Veerasenareddy Burru <veerasenareddy.burru@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Veerasenareddy Burru 2017-08-21 12:35:59 -07:00 committed by David S. Miller
parent ad530a1d40
commit ee5b1fac56
1 changed files with 23 additions and 6 deletions
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29
drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
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@ -1544,15 +1544,32 @@ static struct net_device_stats *liquidio_get_stats(struct net_device *netdev)
*/ */
static int liquidio_change_mtu(struct net_device *netdev, int new_mtu) 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 = GET_LIO(netdev);
oct = lio->oct_dev;
memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
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;
}
lio->mtu = new_mtu; lio->mtu = new_mtu;
netif_info(lio, probe, lio->netdev, "MTU Changed from %d to %d\n",
netdev->mtu, new_mtu);
netdev->mtu = new_mtu;
return 0; return 0;
} }