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gve: Implement suspend/resume/shutdown

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Add support for suspend, resume and shutdown.

Signed-off-by: Catherine Sullivan <csully@google.com>
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Catherine Sullivan 2021-12-15 16:46:50 -08:00 committed by David S. Miller
parent 497dbb2b97
commit 974365e518
2 changed files with 60 additions and 0 deletions
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3
drivers/net/ethernet/google/gve/gve.h
View File

@ -557,6 +557,8 @@ struct gve_priv {
u32 page_alloc_fail; /* count of page alloc fails */
u32 dma_mapping_error; /* count of dma mapping errors */
u32 stats_report_trigger_cnt; /* count of device-requested stats-reports since last reset */
u32 suspend_cnt; /* count of times suspended */
u32 resume_cnt; /* count of times resumed */
struct workqueue_struct *gve_wq;
struct work_struct service_task;
struct work_struct stats_report_task;
@ -573,6 +575,7 @@ struct gve_priv {
/* Gvnic device link speed from hypervisor. */
u64 link_speed;
bool up_before_suspend; /* True if dev was up before suspend */
struct gve_options_dqo_rda options_dqo_rda;
struct gve_ptype_lut *ptype_lut_dqo;

57
drivers/net/ethernet/google/gve/gve_main.c
View File

@ -1676,6 +1676,58 @@ static void gve_remove(struct pci_dev *pdev)
pci_disable_device(pdev);
}
static void gve_shutdown(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct gve_priv *priv = netdev_priv(netdev);
bool was_up = netif_carrier_ok(priv->dev);
rtnl_lock();
if (was_up && gve_close(priv->dev)) {
/* If the dev was up, attempt to close, if close fails, reset */
gve_reset_and_teardown(priv, was_up);
} else {
/* If the dev wasn't up or close worked, finish tearing down */
gve_teardown_priv_resources(priv);
}
rtnl_unlock();
}
#ifdef CONFIG_PM
static int gve_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct gve_priv *priv = netdev_priv(netdev);
bool was_up = netif_carrier_ok(priv->dev);
priv->suspend_cnt++;
rtnl_lock();
if (was_up && gve_close(priv->dev)) {
/* If the dev was up, attempt to close, if close fails, reset */
gve_reset_and_teardown(priv, was_up);
} else {
/* If the dev wasn't up or close worked, finish tearing down */
gve_teardown_priv_resources(priv);
}
priv->up_before_suspend = was_up;
rtnl_unlock();
return 0;
}
static int gve_resume(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct gve_priv *priv = netdev_priv(netdev);
int err;
priv->resume_cnt++;
rtnl_lock();
err = gve_reset_recovery(priv, priv->up_before_suspend);
rtnl_unlock();
return err;
}
#endif /* CONFIG_PM */
static const struct pci_device_id gve_id_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_GOOGLE, PCI_DEV_ID_GVNIC) },
{ }
@ -1686,6 +1738,11 @@ static struct pci_driver gvnic_driver = {
.id_table = gve_id_table,
.probe = gve_probe,
.remove = gve_remove,
.shutdown = gve_shutdown,
#ifdef CONFIG_PM
.suspend = gve_suspend,
.resume = gve_resume,
#endif
};
module_pci_driver(gvnic_driver);