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ionic: set MTU floor at ETH_MIN_MTU

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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 <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shannon Nelson
2020-08-27 16:00:19 -07:00
committed by David S. Miller
parent 161e310667
commit eba8760948
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/pensando/ionic/ionic_lif.c
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@@ -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;