net: ethernet: aquantia: set net_device mtu when mtu is changed

When the aquantia device mtu is changed the net_device structure is not
updated.  As a result the ip command does not properly reflect the mtu change.

Commit 5513e16421cb incorrectly assumed that __dev_set_mtu() was making the
assignment ndev->mtu = new_mtu;  This is not true in the case where the driver
has a ndo_change_mtu routine.

Fixes: 5513e16421cb ("net: ethernet: aquantia: Fixes for aq_ndev_change_mtu")
Cc: Pavel Belous <[email protected]>
Signed-off-by: David Arcari <[email protected]>
Tested-by: Pavel Belous <[email protected]>
Reviewed-by: Jarod Wilson <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_main.c b/drivers/net/ethernet/aquantia/atlantic/aq_main.c
index dad63623be6a93672974fb43ee50b518fff59ab5..d05fbfdce5e52e640042f36ba3eb831a3a42ce8a 100644 (file)
--- a/drivers/net/ethernet/aquantia/atlantic/aq_main.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_main.c
@@ -98,6 +98,7 @@ static int aq_ndev_change_mtu(struct net_device *ndev, int new_mtu)
 
        if (err < 0)
                goto err_exit;
+       ndev->mtu = new_mtu;
 
        if (netif_running(ndev)) {
                aq_ndev_close(ndev);