nfp: inherit the max_mtu from the PF netdev

[ Upstream commit 743ba5b47f7961fb29f2e06bb694fb4f068ac58f ]

The PF netdev is used for data transfer for reprs, so reprs inherit the
maximum MTU settings of the PF netdev.

Fixes: 5de73ee46704 ("nfp: general representor implementation")
Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
index d540a9dc77b3ccdb51d17020f5971851a51d0675..1c43aca8162db87e33e52075f0ef3fcfcc419f28 100644 (file)
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
@@ -297,6 +297,8 @@ int nfp_repr_init(struct nfp_app *app, struct net_device *netdev,
        netdev->netdev_ops = &nfp_repr_netdev_ops;
        netdev->ethtool_ops = &nfp_port_ethtool_ops;
 
+       netdev->max_mtu = pf_netdev->max_mtu;
+
        SWITCHDEV_SET_OPS(netdev, &nfp_port_switchdev_ops);
 
        if (nfp_app_has_tc(app)) {