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net: dsa: loop: Return VLAN table size through devlink 

We return the VLAN table size through devlink as a simple parameter, we
do not support altering it at runtime:

devlink resource show mdio_bus/fixed-0:1f
mdio_bus/fixed-0:1f:
  name VTU size 4096 occ 0 unit entry dpipe_tables none

and after configure a bridge with VLAN filtering:

devlink resource show mdio_bus/fixed-0:1f
mdio_bus/fixed-0:1f:
  name VTU size 4096 occ 1 unit entry dpipe_tables none

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2020-08-18 21:32:18 -07:00 committed by David S. Miller
parent f0408ca45a
commit 142061eba3
1 changed files with 54 additions and 1 deletions
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55
drivers/net/dsa/dsa_loop.c
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@ -28,6 +28,53 @@ static struct dsa_loop_mib_entry dsa_loop_mibs[] = {
static struct phy_device *phydevs[PHY_MAX_ADDR];
enum dsa_loop_devlink_resource_id {
DSA_LOOP_DEVLINK_PARAM_ID_VTU,
};
static u64 dsa_loop_devlink_vtu_get(void *priv)
{
struct dsa_loop_priv *ps = priv;
unsigned int i, count = 0;
struct dsa_loop_vlan *vl;
for (i = 0; i < ARRAY_SIZE(ps->vlans); i++) {
vl = &ps->vlans[i];
if (vl->members)
count++;
}
return count;
}
static int dsa_loop_setup_devlink_resources(struct dsa_switch *ds)
{
struct devlink_resource_size_params size_params;
struct dsa_loop_priv *ps = ds->priv;
int err;
devlink_resource_size_params_init(&size_params, ARRAY_SIZE(ps->vlans),
ARRAY_SIZE(ps->vlans),
1, DEVLINK_RESOURCE_UNIT_ENTRY);
err = dsa_devlink_resource_register(ds, "VTU", ARRAY_SIZE(ps->vlans),
DSA_LOOP_DEVLINK_PARAM_ID_VTU,
DEVLINK_RESOURCE_ID_PARENT_TOP,
&size_params);
if (err)
goto out;
dsa_devlink_resource_occ_get_register(ds,
DSA_LOOP_DEVLINK_PARAM_ID_VTU,
dsa_loop_devlink_vtu_get, ps);
return 0;
out:
dsa_devlink_resources_unregister(ds);
return err;
}
static enum dsa_tag_protocol dsa_loop_get_protocol(struct dsa_switch *ds,
int port,
enum dsa_tag_protocol mp)
@ -48,7 +95,12 @@ static int dsa_loop_setup(struct dsa_switch *ds)
dev_dbg(ds->dev, "%s\n", __func__);
return 0;
return dsa_loop_setup_devlink_resources(ds);
}
static void dsa_loop_teardown(struct dsa_switch *ds)
{
dsa_devlink_resources_unregister(ds);
}
static int dsa_loop_get_sset_count(struct dsa_switch *ds, int port, int sset)
@ -243,6 +295,7 @@ static int dsa_loop_port_max_mtu(struct dsa_switch *ds, int port)
static const struct dsa_switch_ops dsa_loop_driver = {
.get_tag_protocol = dsa_loop_get_protocol,
.setup = dsa_loop_setup,
.teardown = dsa_loop_teardown,
.get_strings = dsa_loop_get_strings,
.get_ethtool_stats = dsa_loop_get_ethtool_stats,
.get_sset_count = dsa_loop_get_sset_count,