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nvethernet:MACSEC suspend/resume changes

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Added functionality to support MACSEC
suspend and resume by disabling/enabling
MACSEC CAR as part of ether suspend and resume
and using macsec_open and macsec_close

Bug 3399462

Change-Id: I296675ea62e99922bd20cd805a40afa805b08214
Signed-off-by: Sanath Kumar Gampa <sgampa@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2610649
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Mahesh Patil <maheshp@nvidia.com>
Reviewed-by: Srinivas Ramachandran <srinivasra@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Sanath Kumar Gampa
2021-10-14 15:45:10 +05:30
committed by Revanth Kumar Uppala
parent 538c60bba4
commit 818847a4e8
3 changed files with 71 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/net/ethernet/nvidia/nvethernet/ether_linux.c
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@@ -6449,6 +6449,20 @@ static int ether_suspend_noirq(struct device *dev)
if (!netif_running(ndev))
return 0;
/* Keep MACSEC to suspend if MACSEC is supported on this platform */
#ifdef MACSEC_SUPPORT
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)) {
pdata->macsec_pdata->enabled_before_suspend =
pdata->macsec_pdata->enabled;
if (pdata->macsec_pdata->enabled != OSI_DISABLE) {
ret = macsec_suspend(pdata->macsec_pdata);
if (ret < 0)
dev_err(pdata->dev, "Failed to suspend macsec");
}
}
#endif /* MACSEC_SUPPORT */
/* Since MAC is placed in reset during suspend, take a backup of
* current configuration so that SW view of HW is maintained across
* suspend/resume.
@@ -6626,6 +6640,18 @@ static int ether_resume(struct ether_priv_data *pdata)
/* re-start workqueue */
ether_stats_work_queue_start(pdata);
/* Keep MACSEC also to Resume if MACSEC is supported on this platform */
#ifdef MACSEC_SUPPORT
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)) {
if (pdata->macsec_pdata->enabled_before_suspend != OSI_DISABLE) {
ret = macsec_resume(pdata->macsec_pdata);
if (ret < 0)
dev_err(pdata->dev, "Failed to resume MACSEC ");
}
}
#endif /* MACSEC_SUPPORT */
return 0;
err_start_mac:
ether_napi_disable(pdata);