diff options
Diffstat (limited to 'drivers/net/ethernet/google/gve/gve_main.c')
-rw-r--r-- | drivers/net/ethernet/google/gve/gve_main.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c index 5a229a01f49d..5b40f9c53196 100644 --- a/drivers/net/ethernet/google/gve/gve_main.c +++ b/drivers/net/ethernet/google/gve/gve_main.c @@ -12,6 +12,8 @@ #include <linux/sched.h> #include <linux/timer.h> #include <linux/workqueue.h> +#include <linux/utsname.h> +#include <linux/version.h> #include <net/sch_generic.h> #include "gve.h" #include "gve_dqo.h" @@ -30,6 +32,49 @@ const char gve_version_str[] = GVE_VERSION; static const char gve_version_prefix[] = GVE_VERSION_PREFIX; +static int gve_verify_driver_compatibility(struct gve_priv *priv) +{ + int err; + struct gve_driver_info *driver_info; + dma_addr_t driver_info_bus; + + driver_info = dma_alloc_coherent(&priv->pdev->dev, + sizeof(struct gve_driver_info), + &driver_info_bus, GFP_KERNEL); + if (!driver_info) + return -ENOMEM; + + *driver_info = (struct gve_driver_info) { + .os_type = 1, /* Linux */ + .os_version_major = cpu_to_be32(LINUX_VERSION_MAJOR), + .os_version_minor = cpu_to_be32(LINUX_VERSION_SUBLEVEL), + .os_version_sub = cpu_to_be32(LINUX_VERSION_PATCHLEVEL), + .driver_capability_flags = { + cpu_to_be64(GVE_DRIVER_CAPABILITY_FLAGS1), + cpu_to_be64(GVE_DRIVER_CAPABILITY_FLAGS2), + cpu_to_be64(GVE_DRIVER_CAPABILITY_FLAGS3), + cpu_to_be64(GVE_DRIVER_CAPABILITY_FLAGS4), + }, + }; + strscpy(driver_info->os_version_str1, utsname()->release, + sizeof(driver_info->os_version_str1)); + strscpy(driver_info->os_version_str2, utsname()->version, + sizeof(driver_info->os_version_str2)); + + err = gve_adminq_verify_driver_compatibility(priv, + sizeof(struct gve_driver_info), + driver_info_bus); + + /* It's ok if the device doesn't support this */ + if (err == -EOPNOTSUPP) + err = 0; + + dma_free_coherent(&priv->pdev->dev, + sizeof(struct gve_driver_info), + driver_info, driver_info_bus); + return err; +} + static netdev_tx_t gve_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct gve_priv *priv = netdev_priv(dev); @@ -1368,6 +1413,13 @@ static int gve_init_priv(struct gve_priv *priv, bool skip_describe_device) return err; } + err = gve_verify_driver_compatibility(priv); + if (err) { + dev_err(&priv->pdev->dev, + "Could not verify driver compatibility: err=%d\n", err); + goto err; + } + if (skip_describe_device) goto setup_device; |