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path: root/drivers/net/netdevsim/netdev.c
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Diffstat (limited to 'drivers/net/netdevsim/netdev.c')
-rw-r--r--drivers/net/netdevsim/netdev.c76
1 files changed, 27 insertions, 49 deletions
diff --git a/drivers/net/netdevsim/netdev.c b/drivers/net/netdevsim/netdev.c
index 0af38bc6d98c..7805fa840383 100644
--- a/drivers/net/netdevsim/netdev.c
+++ b/drivers/net/netdevsim/netdev.c
@@ -25,6 +25,8 @@
#include "netdevsim.h"
+static u32 nsim_dev_id;
+
struct nsim_vf_config {
int link_state;
u16 min_tx_rate;
@@ -38,10 +40,7 @@ struct nsim_vf_config {
bool rss_query_enabled;
};
-static u32 nsim_dev_id;
-
static struct dentry *nsim_ddir;
-static struct dentry *nsim_sdev_ddir;
static int nsim_num_vf(struct device *dev)
{
@@ -158,8 +157,8 @@ static int nsim_get_port_parent_id(struct net_device *dev,
static int nsim_init(struct net_device *dev)
{
- char sdev_ddir_name[10], sdev_link_name[32];
struct netdevsim *ns = netdev_priv(dev);
+ char sdev_link_name[32];
int err;
ns->netdev = dev;
@@ -167,32 +166,13 @@ static int nsim_init(struct net_device *dev)
if (IS_ERR_OR_NULL(ns->ddir))
return -ENOMEM;
- if (!ns->sdev) {
- ns->sdev = kzalloc(sizeof(*ns->sdev), GFP_KERNEL);
- if (!ns->sdev) {
- err = -ENOMEM;
- goto err_debugfs_destroy;
- }
- ns->sdev->refcnt = 1;
- ns->sdev->switch_id = nsim_dev_id;
- sprintf(sdev_ddir_name, "%u", ns->sdev->switch_id);
- ns->sdev->ddir = debugfs_create_dir(sdev_ddir_name,
- nsim_sdev_ddir);
- if (IS_ERR_OR_NULL(ns->sdev->ddir)) {
- err = PTR_ERR_OR_ZERO(ns->sdev->ddir) ?: -EINVAL;
- goto err_sdev_free;
- }
- } else {
- sprintf(sdev_ddir_name, "%u", ns->sdev->switch_id);
- ns->sdev->refcnt++;
- }
-
- sprintf(sdev_link_name, "../../" DRV_NAME "_sdev/%s", sdev_ddir_name);
+ sprintf(sdev_link_name, "../../" DRV_NAME "_sdev/%u",
+ ns->sdev->switch_id);
debugfs_create_symlink("sdev", ns->ddir, sdev_link_name);
err = nsim_bpf_init(ns);
if (err)
- goto err_sdev_destroy;
+ goto err_debugfs_destroy;
ns->dev.id = nsim_dev_id++;
ns->dev.bus = &nsim_bus;
@@ -215,12 +195,6 @@ err_unreg_dev:
device_unregister(&ns->dev);
err_bpf_uninit:
nsim_bpf_uninit(ns);
-err_sdev_destroy:
- if (!--ns->sdev->refcnt) {
- debugfs_remove_recursive(ns->sdev->ddir);
-err_sdev_free:
- kfree(ns->sdev);
- }
err_debugfs_destroy:
debugfs_remove_recursive(ns->ddir);
return err;
@@ -234,10 +208,6 @@ static void nsim_uninit(struct net_device *dev)
nsim_devlink_teardown(ns);
debugfs_remove_recursive(ns->ddir);
nsim_bpf_uninit(ns);
- if (!--ns->sdev->refcnt) {
- debugfs_remove_recursive(ns->sdev->ddir);
- kfree(ns->sdev);
- }
}
static void nsim_free(struct net_device *dev)
@@ -246,6 +216,7 @@ static void nsim_free(struct net_device *dev)
device_unregister(&ns->dev);
/* netdev and vf state will be freed out of device_release() */
+ nsim_sdev_put(ns->sdev);
}
static netdev_tx_t nsim_start_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -523,10 +494,11 @@ static int nsim_newlink(struct net *src_net, struct net_device *dev,
struct netlink_ext_ack *extack)
{
struct netdevsim *ns = netdev_priv(dev);
+ struct netdevsim *joinns = NULL;
+ int err;
if (tb[IFLA_LINK]) {
struct net_device *joindev;
- struct netdevsim *joinns;
joindev = __dev_get_by_index(src_net,
nla_get_u32(tb[IFLA_LINK]));
@@ -536,12 +508,20 @@ static int nsim_newlink(struct net *src_net, struct net_device *dev,
return -EINVAL;
joinns = netdev_priv(joindev);
- if (!joinns->sdev || !joinns->sdev->refcnt)
- return -EINVAL;
- ns->sdev = joinns->sdev;
}
- return register_netdevice(dev);
+ ns->sdev = nsim_sdev_get(joinns);
+ if (IS_ERR(ns->sdev))
+ return PTR_ERR(ns->sdev);
+
+ err = register_netdevice(dev);
+ if (err)
+ goto err_sdev_put;
+ return 0;
+
+err_sdev_put:
+ nsim_sdev_put(ns->sdev);
+ return err;
}
static struct rtnl_link_ops nsim_link_ops __read_mostly = {
@@ -560,15 +540,13 @@ static int __init nsim_module_init(void)
if (IS_ERR_OR_NULL(nsim_ddir))
return -ENOMEM;
- nsim_sdev_ddir = debugfs_create_dir(DRV_NAME "_sdev", NULL);
- if (IS_ERR_OR_NULL(nsim_sdev_ddir)) {
- err = -ENOMEM;
+ err = nsim_sdev_init();
+ if (err)
goto err_debugfs_destroy;
- }
err = bus_register(&nsim_bus);
if (err)
- goto err_sdir_destroy;
+ goto err_sdev_exit;
err = nsim_devlink_init();
if (err)
@@ -584,8 +562,8 @@ err_dl_fini:
nsim_devlink_exit();
err_unreg_bus:
bus_unregister(&nsim_bus);
-err_sdir_destroy:
- debugfs_remove_recursive(nsim_sdev_ddir);
+err_sdev_exit:
+ nsim_sdev_exit();
err_debugfs_destroy:
debugfs_remove_recursive(nsim_ddir);
return err;
@@ -596,7 +574,7 @@ static void __exit nsim_module_exit(void)
rtnl_link_unregister(&nsim_link_ops);
nsim_devlink_exit();
bus_unregister(&nsim_bus);
- debugfs_remove_recursive(nsim_sdev_ddir);
+ nsim_sdev_exit();
debugfs_remove_recursive(nsim_ddir);
}