From: Veerasenareddy Burru <veerasenareddy.burru@cavium.com>
Date: Mon, 21 Aug 2017 12:35:59 -0700
Subject: liquidio: make VF driver notify NIC firmware of MTU change
Patch-mainline: v4.14-rc1
Git-commit: ee5b1fac5641515a80ed1b15a84713629b29516d
References: bsc#1067126
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/cavium/liquidio/lio_vf_main.c | 27 +++++++++++++++++----
1 file changed, 22 insertions(+), 5 deletions(-)
--- a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
@@ -1544,14 +1544,31 @@ static struct net_device_stats *liquidio
*/
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;
- netdev->mtu = new_mtu;
+ 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;
return 0;
}