[PATCH net-next 01/12] ionic: set MTU floor at ETH_MIN_MTU

[Shannon Nelson]

The NIC might tell us its minimum MTU, but let's be sure not
to use something smaller than ETH_MIN_MTU.

Signed-off-by: Shannon Nelson <snel...@pensando.io>
---
 drivers/net/ethernet/pensando/ionic/ionic_lif.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c 
b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index 26988ad7ec97..235215c28f29 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -2079,7 +2079,8 @@ static struct ionic_lif *ionic_lif_alloc(struct ionic 
*ionic, unsigned int index
        lif->identity = lid;
        lif->lif_type = IONIC_LIF_TYPE_CLASSIC;
        ionic_lif_identify(ionic, lif->lif_type, lif->identity);
-       lif->netdev->min_mtu = le32_to_cpu(lif->identity->eth.min_frame_size);
+       lif->netdev->min_mtu = max_t(unsigned int, ETH_MIN_MTU,
+                                    
le32_to_cpu(lif->identity->eth.min_frame_size));
        lif->netdev->max_mtu =
                le32_to_cpu(lif->identity->eth.max_frame_size) - ETH_HLEN - 
VLAN_HLEN;
 
-- 
2.17.1