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net: dsa: sja1105: avoid some work for unused ports

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Do not put unused ports in the forwarding domain, and do not allocate
FDB entries for dynamic address learning for them.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean 2021-05-24 16:14:14 +03:00 committed by David S. Miller
parent 542043e91d
commit f238fef1b3
1 changed files with 22 additions and 5 deletions
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27
drivers/net/dsa/sja1105/sja1105_main.c
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@ -298,14 +298,22 @@ static int sja1105_init_l2_lookup_params(struct sja1105_private *priv)
.drpnolearn = true,
};
struct dsa_switch *ds = priv->ds;
int port, num_used_ports = 0;
struct sja1105_table *table;
u64 max_fdb_entries;
int port;
max_fdb_entries = SJA1105_MAX_L2_LOOKUP_COUNT / ds->num_ports;
for (port = 0; port < ds->num_ports; port++)
if (!dsa_is_unused_port(ds, port))
num_used_ports++;
max_fdb_entries = SJA1105_MAX_L2_LOOKUP_COUNT / num_used_ports;
for (port = 0; port < ds->num_ports; port++) {
if (dsa_is_unused_port(ds, port))
continue;
default_l2_lookup_params.maxaddrp[port] = max_fdb_entries;
}
table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP_PARAMS];
@ -419,6 +427,9 @@ static int sja1105_init_l2_forwarding(struct sja1105_private *priv)
for (i = 0; i < ds->num_ports; i++) {
unsigned int upstream = dsa_upstream_port(priv->ds, i);
if (dsa_is_unused_port(ds, i))
continue;
for (j = 0; j < SJA1105_NUM_TC; j++)
l2fwd[i].vlan_pmap[j] = j;
@ -440,12 +451,18 @@ static int sja1105_init_l2_forwarding(struct sja1105_private *priv)
l2fwd[upstream].bc_domain |= BIT(i);
l2fwd[upstream].fl_domain |= BIT(i);
}
/* Next 8 entries define VLAN PCP mapping from ingress to egress.
* Create a one-to-one mapping.
*/
for (i = 0; i < SJA1105_NUM_TC; i++)
for (j = 0; j < ds->num_ports; j++)
for (i = 0; i < SJA1105_NUM_TC; i++) {
for (j = 0; j < ds->num_ports; j++) {
if (dsa_is_unused_port(ds, j))
continue;
l2fwd[ds->num_ports + i].vlan_pmap[j] = i;
}
}
return 0;
}