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authorFlorian Fainelli <f.fainelli@gmail.com>2020-07-20 06:49:54 +0300
committerDavid S. Miller <davem@davemloft.net>2020-07-21 02:48:22 +0300
commit9c0c7014f38206a2b63e7e832edf2e881a7b49ad (patch)
treec0624b765dec69ddd84fda731835322feaca29b7 /net/dsa
parent3369afba1e46b0f7f33b4853a9d06616be6e22d5 (diff)
downloadlinux-9c0c7014f38206a2b63e7e832edf2e881a7b49ad.tar.xz
net: dsa: Setup dsa_netdev_ops
Now that we have all the infrastructure in place for calling into the dsa_ptr->netdev_ops function pointers, install them when we configure the DSA CPU/management interface and tear them down. The flow is unchanged from before, but now we preserve equality of tests when network device drivers do tests like dev->netdev_ops == &foo_ops which was not the case before since we were allocating an entirely new structure. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
-rw-r--r--net/dsa/master.c52
1 files changed, 13 insertions, 39 deletions
diff --git a/net/dsa/master.c b/net/dsa/master.c
index 480a61460c23..0a90911ae31b 100644
--- a/net/dsa/master.c
+++ b/net/dsa/master.c
@@ -220,12 +220,17 @@ static int dsa_master_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
break;
}
- if (cpu_dp->orig_ndo_ops && cpu_dp->orig_ndo_ops->ndo_do_ioctl)
- err = cpu_dp->orig_ndo_ops->ndo_do_ioctl(dev, ifr, cmd);
+ if (dev->netdev_ops->ndo_do_ioctl)
+ err = dev->netdev_ops->ndo_do_ioctl(dev, ifr, cmd);
return err;
}
+static const struct dsa_netdevice_ops dsa_netdev_ops = {
+ .ndo_do_ioctl = dsa_master_ioctl,
+ .ndo_get_phys_port_name = dsa_master_get_phys_port_name,
+};
+
static int dsa_master_ethtool_setup(struct net_device *dev)
{
struct dsa_port *cpu_dp = dev->dsa_ptr;
@@ -260,38 +265,10 @@ static void dsa_master_ethtool_teardown(struct net_device *dev)
cpu_dp->orig_ethtool_ops = NULL;
}
-static int dsa_master_ndo_setup(struct net_device *dev)
-{
- struct dsa_port *cpu_dp = dev->dsa_ptr;
- struct dsa_switch *ds = cpu_dp->ds;
- struct net_device_ops *ops;
-
- if (dev->netdev_ops->ndo_get_phys_port_name)
- return 0;
-
- ops = devm_kzalloc(ds->dev, sizeof(*ops), GFP_KERNEL);
- if (!ops)
- return -ENOMEM;
-
- cpu_dp->orig_ndo_ops = dev->netdev_ops;
- if (cpu_dp->orig_ndo_ops)
- memcpy(ops, cpu_dp->orig_ndo_ops, sizeof(*ops));
-
- ops->ndo_get_phys_port_name = dsa_master_get_phys_port_name;
- ops->ndo_do_ioctl = dsa_master_ioctl;
-
- dev->netdev_ops = ops;
-
- return 0;
-}
-
-static void dsa_master_ndo_teardown(struct net_device *dev)
+static void dsa_netdev_ops_set(struct net_device *dev,
+ const struct dsa_netdevice_ops *ops)
{
- struct dsa_port *cpu_dp = dev->dsa_ptr;
-
- if (cpu_dp->orig_ndo_ops)
- dev->netdev_ops = cpu_dp->orig_ndo_ops;
- cpu_dp->orig_ndo_ops = NULL;
+ dev->dsa_ptr->netdev_ops = ops;
}
static ssize_t tagging_show(struct device *d, struct device_attribute *attr,
@@ -353,9 +330,7 @@ int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp)
if (ret)
return ret;
- ret = dsa_master_ndo_setup(dev);
- if (ret)
- goto out_err_ethtool_teardown;
+ dsa_netdev_ops_set(dev, &dsa_netdev_ops);
ret = sysfs_create_group(&dev->dev.kobj, &dsa_group);
if (ret)
@@ -364,8 +339,7 @@ int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp)
return ret;
out_err_ndo_teardown:
- dsa_master_ndo_teardown(dev);
-out_err_ethtool_teardown:
+ dsa_netdev_ops_set(dev, NULL);
dsa_master_ethtool_teardown(dev);
return ret;
}
@@ -373,7 +347,7 @@ out_err_ethtool_teardown:
void dsa_master_teardown(struct net_device *dev)
{
sysfs_remove_group(&dev->dev.kobj, &dsa_group);
- dsa_master_ndo_teardown(dev);
+ dsa_netdev_ops_set(dev, NULL);
dsa_master_ethtool_teardown(dev);
dsa_master_reset_mtu(dev);