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nvethernet: Fix multi-os test regression

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Reduce MTU size to include macsec SECTAG if macsec
supported

Bug 200730979

Change-Id: I7db505c2ef1c6a866ebbec285a647ec9c346727f
Signed-off-by: Mahesh Patil <maheshp@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2549562
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Mahesh Patil
2021-06-24 13:09:09 -07:00
committed by Revanth Kumar Uppala
parent 9fd74bdf26
commit 300cffe2bc
1 changed files with 11 additions and 19 deletions
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30
drivers/net/ethernet/nvidia/nvethernet/ether_linux.c
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@@ -3521,15 +3521,13 @@ static int ether_change_mtu(struct net_device *ndev, int new_mtu)
osi_dma->mtu = new_mtu;
#ifdef MACSEC_SUPPORT
#ifdef DEBUG_MACSEC
/* Macsec is enabled, reduce MTU
*/
osi_core->mtu -= MACSEC_TAG_ICV_LEN;
osi_dma->mtu = osi_core->mtu;
ndev->mtu = osi_core->mtu;
netdev_info(pdata->ndev, "Macsec: Reduced MTU: %d Max: %d\n",
ndev->mtu, ndev->max_mtu);
#endif /* DEBUG_MACSEC */
/* Macsec is supported, reduce MTU */
if ((osi_core->mac == OSI_MAC_HW_EQOS && osi_core->mac_ver == OSI_EQOS_MAC_5_30) ||
(osi_core->mac == OSI_MAC_HW_MGBE && osi_core->mac_ver == OSI_MGBE_MAC_3_10)) {
ndev->mtu -= MACSEC_TAG_ICV_LEN;
netdev_info(pdata->ndev, "Macsec: Reduced MTU: %d Max: %d\n",
ndev->mtu, ndev->max_mtu);
}
#endif /* MACSEC_SUPPORT */
netdev_update_features(ndev);
@@ -5900,17 +5898,11 @@ static int ether_probe(struct platform_device *pdev)
dev_info(&pdev->dev, "Macsec not supported\n");
} else {
dev_info(&pdev->dev, "Macsec not enabled\n");
/* Macsec is supported, reduce MTU */
ndev->mtu -= MACSEC_TAG_ICV_LEN;
dev_info(&pdev->dev, "Macsec: Reduced MTU: %d Max: %d\n",
ndev->mtu, ndev->max_mtu);
}
#ifdef DEBUG_MACSEC
/* Macsec is enabled, reduce MTU
*/
osi_core->mtu -= MACSEC_TAG_ICV_LEN;
osi_dma->mtu = osi_core->mtu;
ndev->mtu = osi_core->mtu;
dev_info(&pdev->dev, "Macsec: Reduced MTU: %d Max: %d\n",
ndev->mtu, ndev->max_mtu);
#endif /* DEBUG_MACSEC */
#endif /* MACSEC_SUPPORT */
ret = register_netdev(ndev);