[PATCH net-next] liquidio: update VF's netdev->max_mtu if there's a change in PF's MTU

[Felix Manlunas]

From: Veerasenareddy Burru <veerasenareddy.bu...@cavium.com>

A VF's MTU is capped at the parent PF's MTU.  So if there's a change in the
PF's MTU, then update the VF's netdev->max_mtu.

Also remove duplicate log messages for MTU change.

Signed-off-by: Veerasenareddy Burru <veerasenareddy.bu...@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsav...@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlu...@cavium.com>
---
 drivers/net/ethernet/cavium/liquidio/lio_core.c    | 3 ---
 drivers/net/ethernet/cavium/liquidio/lio_vf_main.c | 9 ++++++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/cavium/liquidio/lio_core.c 
b/drivers/net/ethernet/cavium/liquidio/lio_core.c
index d20d0eb..65fb82f 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_core.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_core.c
@@ -165,9 +165,6 @@ void liquidio_link_ctrl_cmd_completion(void *nctrl_ptr)
                /* If command is successful, change the MTU. */
                netif_info(lio, probe, lio->netdev, "MTU Changed from %d to 
%d\n",
                           netdev->mtu, nctrl->ncmd.s.param1);
-               dev_info(&oct->pci_dev->dev, "%s MTU Changed from %d to %d\n",
-                        netdev->name, netdev->mtu,
-                        nctrl->ncmd.s.param1);
                netdev->mtu = nctrl->ncmd.s.param1;
                queue_delayed_work(lio->link_status_wq.wq,
                                   &lio->link_status_wq.wk.work, 0);
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c 
b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
index 2fc2da3..968a98e 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
@@ -636,6 +636,12 @@ static void update_link_status(struct net_device *netdev,
                        txqs_stop(netdev);
                }
 
+               if (lio->linfo.link.s.mtu != netdev->max_mtu) {
+                       dev_info(&oct->pci_dev->dev, "Max MTU Changed from %d 
to %d\n",
+                                netdev->max_mtu, lio->linfo.link.s.mtu);
+                       netdev->max_mtu = lio->linfo.link.s.mtu;
+               }
+
                if (lio->linfo.link.s.mtu < netdev->mtu) {
                        dev_warn(&oct->pci_dev->dev,
                                 "PF has changed the MTU for gmx port. Reducing 
the mtu from %d to %d\n",
@@ -1678,14 +1684,11 @@ 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 octeon_device *oct = lio->oct_dev;
 
        lio->mtu = new_mtu;
 
        netif_info(lio, probe, lio->netdev, "MTU Changed from %d to %d\n",
                   netdev->mtu, new_mtu);
-       dev_info(&oct->pci_dev->dev, "%s MTU Changed from %d to %d\n",
-                netdev->name, netdev->mtu, new_mtu);
 
        netdev->mtu = new_mtu;