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net: dsa: make the VLAN add function return void

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The switchdev design implies that a software error should not happen in
the commit phase since it must have been previously reported in the
prepare phase. If an hardware error occurs during the commit phase,
there is nothing switchdev can do about it.

The DSA layer separates port_vlan_prepare and port_vlan_add for
simplicity and convenience. If an hardware error occurs during the
commit phase, there is no need to report it outside the driver itself.

Make the DSA port_vlan_add routine return void for explicitness.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2016-04-06 11:55:05 -04:00 committed by David S. Miller
parent 8497aa618d
commit 4d5770b397
4 changed files with 18 additions and 27 deletions
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26
drivers/net/dsa/mv88e6xxx.c
View File

@ -1908,31 +1908,27 @@ static int _mv88e6xxx_port_vlan_add(struct dsa_switch *ds, int port, u16 vid,
return _mv88e6xxx_vtu_loadpurge(ds, &vlan);
}
int mv88e6xxx_port_vlan_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans)
void mv88e6xxx_port_vlan_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans)
{
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
u16 vid;
int err = 0;
mutex_lock(&ps->smi_mutex);
for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
err = _mv88e6xxx_port_vlan_add(ds, port, vid, untagged);
if (err)
goto unlock;
}
for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid)
if (_mv88e6xxx_port_vlan_add(ds, port, vid, untagged))
netdev_err(ds->ports[port], "failed to add VLAN %d%c\n",
vid, untagged ? 'u' : 't');
if (pvid && _mv88e6xxx_port_pvid_set(ds, port, vlan->vid_end))
netdev_err(ds->ports[port], "failed to set PVID %d\n",
vlan->vid_end);
/* no PVID with ranges, otherwise it's a bug */
if (pvid)
err = _mv88e6xxx_port_pvid_set(ds, port, vlan->vid_end);
unlock:
mutex_unlock(&ps->smi_mutex);
return err;
}
static int _mv88e6xxx_port_vlan_del(struct dsa_switch *ds, int port, u16 vid)

6
drivers/net/dsa/mv88e6xxx.h
View File

@ -503,9 +503,9 @@ int mv88e6xxx_port_vlan_filtering(struct dsa_switch *ds, int port,
int mv88e6xxx_port_vlan_prepare(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans);
int mv88e6xxx_port_vlan_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans);
void mv88e6xxx_port_vlan_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans);
int mv88e6xxx_port_vlan_del(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan);
int mv88e6xxx_port_vlan_dump(struct dsa_switch *ds, int port,

2
include/net/dsa.h
View File

@ -310,7 +310,7 @@ struct dsa_switch_driver {
int (*port_vlan_prepare)(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans);
int (*port_vlan_add)(struct dsa_switch *ds, int port,
void (*port_vlan_add)(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans);
int (*port_vlan_del)(struct dsa_switch *ds, int port,

11
net/dsa/slave.c
View File

@ -207,21 +207,16 @@ static int dsa_slave_port_vlan_add(struct net_device *dev,
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_switch *ds = p->parent;
int err;
if (switchdev_trans_ph_prepare(trans)) {
if (!ds->drv->port_vlan_prepare || !ds->drv->port_vlan_add)
return -EOPNOTSUPP;
err = ds->drv->port_vlan_prepare(ds, p->port, vlan, trans);
if (err)
return err;
} else {
err = ds->drv->port_vlan_add(ds, p->port, vlan, trans);
if (err)
return err;
return ds->drv->port_vlan_prepare(ds, p->port, vlan, trans);
}
ds->drv->port_vlan_add(ds, p->port, vlan, trans);
return 0;
}