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net: dsa: add switch vlan bitmap functions 

This patch brings no functional changes.
It moves out the VLAN code iterating on a list of VLAN members into new
dsa_switch_vlan_{prepare,add}_bitmap() functions.

This gives us a better isolation of the two switchdev phases.

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 2017-11-30 11:23:59 -05:00 committed by David S. Miller
parent 3709aadc83
commit 9c428c593f
1 changed files with 34 additions and 15 deletions
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49
net/dsa/switch.c
View File

@ -157,13 +157,43 @@ static int dsa_switch_mdb_del(struct dsa_switch *ds,
return 0;
}
static int
dsa_switch_vlan_prepare_bitmap(struct dsa_switch *ds,
const struct switchdev_obj_port_vlan *vlan,
const unsigned long *bitmap)
{
int port, err;
if (!ds->ops->port_vlan_prepare || !ds->ops->port_vlan_add)
return -EOPNOTSUPP;
for_each_set_bit(port, bitmap, ds->num_ports) {
err = ds->ops->port_vlan_prepare(ds, port, vlan);
if (err)
return err;
}
return 0;
}
static void
dsa_switch_vlan_add_bitmap(struct dsa_switch *ds,
const struct switchdev_obj_port_vlan *vlan,
const unsigned long *bitmap)
{
int port;
for_each_set_bit(port, bitmap, ds->num_ports)
ds->ops->port_vlan_add(ds, port, vlan);
}
static int dsa_switch_vlan_add(struct dsa_switch *ds,
struct dsa_notifier_vlan_info *info)
{
const struct switchdev_obj_port_vlan *vlan = info->vlan;
struct switchdev_trans *trans = info->trans;
DECLARE_BITMAP(members, ds->num_ports);
int port, err;
int port;
/* Build a mask of VLAN members */
bitmap_zero(members, ds->num_ports);
@ -173,21 +203,10 @@ static int dsa_switch_vlan_add(struct dsa_switch *ds,
if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
set_bit(port, members);
if (switchdev_trans_ph_prepare(trans)) {
if (!ds->ops->port_vlan_prepare || !ds->ops->port_vlan_add)
return -EOPNOTSUPP;
if (switchdev_trans_ph_prepare(trans))
return dsa_switch_vlan_prepare_bitmap(ds, vlan, members);
for_each_set_bit(port, members, ds->num_ports) {
err = ds->ops->port_vlan_prepare(ds, port, vlan);
if (err)
return err;
}
return 0;
}
for_each_set_bit(port, members, ds->num_ports)
ds->ops->port_vlan_add(ds, port, vlan);
dsa_switch_vlan_add_bitmap(ds, vlan, members);
return 0;
}