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net: dsa: hellcreek: Add devlink VLAN region

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Allow to dump the VLAN table via devlink. This especially useful, because the
driver internally leverages VLANs for the port separation. These are not visible
via the bridge utility.

Signed-off-by: Kurt Kanzenbach <kurt@kmk-computers.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kurt Kanzenbach
2021-03-13 10:39:36 +01:00
committed by David S. Miller
parent ebc71a3804
commit ba2d1c2888
2 changed files with 80 additions and 0 deletions
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74
drivers/net/dsa/hirschmann/hellcreek.c
View File

@@ -1082,6 +1082,67 @@ out:
return err;
}
static int hellcreek_devlink_region_vlan_snapshot(struct devlink *dl,
const struct devlink_region_ops *ops,
struct netlink_ext_ack *extack,
u8 **data)
{
struct hellcreek_devlink_vlan_entry *table, *entry;
struct dsa_switch *ds = dsa_devlink_to_ds(dl);
struct hellcreek *hellcreek = ds->priv;
int i;
table = kcalloc(VLAN_N_VID, sizeof(*entry), GFP_KERNEL);
if (!table)
return -ENOMEM;
entry = table;
mutex_lock(&hellcreek->reg_lock);
for (i = 0; i < VLAN_N_VID; ++i, ++entry) {
entry->member = hellcreek->vidmbrcfg[i];
entry->vid = i;
}
mutex_unlock(&hellcreek->reg_lock);
*data = (u8 *)table;
return 0;
}
static struct devlink_region_ops hellcreek_region_vlan_ops = {
.name = "vlan",
.snapshot = hellcreek_devlink_region_vlan_snapshot,
.destructor = kfree,
};
static int hellcreek_setup_devlink_regions(struct dsa_switch *ds)
{
struct hellcreek *hellcreek = ds->priv;
struct devlink_region_ops *ops;
struct devlink_region *region;
u64 size;
/* VLAN table */
size = VLAN_N_VID * sizeof(struct hellcreek_devlink_vlan_entry);
ops = &hellcreek_region_vlan_ops;
region = dsa_devlink_region_create(ds, ops, 1, size);
if (IS_ERR(region))
return PTR_ERR(region);
hellcreek->vlan_region = region;
return 0;
}
static void hellcreek_teardown_devlink_regions(struct dsa_switch *ds)
{
struct hellcreek *hellcreek = ds->priv;
dsa_devlink_region_destroy(hellcreek->vlan_region);
}
static int hellcreek_setup(struct dsa_switch *ds)
{
struct hellcreek *hellcreek = ds->priv;
@@ -1143,11 +1204,24 @@ static int hellcreek_setup(struct dsa_switch *ds)
return ret;
}
ret = hellcreek_setup_devlink_regions(ds);
if (ret) {
dev_err(hellcreek->dev,
"Failed to setup devlink regions!\n");
goto err_regions;
}
return 0;
err_regions:
dsa_devlink_resources_unregister(ds);
return ret;
}
static void hellcreek_teardown(struct dsa_switch *ds)
{
hellcreek_teardown_devlink_regions(ds);
dsa_devlink_resources_unregister(ds);
}

6
drivers/net/dsa/hirschmann/hellcreek.h
View File

@@ -278,6 +278,7 @@ struct hellcreek {
struct mutex reg_lock; /* Switch IP register lock */
struct mutex vlan_lock; /* VLAN bitmaps lock */
struct mutex ptp_lock; /* PTP IP register lock */
struct devlink_region *vlan_region;
void __iomem *base;
void __iomem *ptp_base;
u16 swcfg; /* swcfg shadow */
@@ -304,4 +305,9 @@ enum hellcreek_devlink_resource_id {
HELLCREEK_DEVLINK_PARAM_ID_FDB_TABLE,
};
struct hellcreek_devlink_vlan_entry {
u16 vid;
u16 member;
};
#endif /* _HELLCREEK_H_ */