diff options
Diffstat (limited to 'net/dsa/switch.c')
| -rw-r--r-- | net/dsa/switch.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/net/dsa/switch.c b/net/dsa/switch.c index df4abe897ed6..f3c32ff552b3 100644 --- a/net/dsa/switch.c +++ b/net/dsa/switch.c @@ -52,6 +52,40 @@ static int dsa_switch_ageing_time(struct dsa_switch *ds, return 0; } +static bool dsa_switch_mtu_match(struct dsa_switch *ds, int port, + struct dsa_notifier_mtu_info *info) +{ + if (ds->index == info->sw_index) + return (port == info->port) || dsa_is_dsa_port(ds, port); + + if (!info->propagate_upstream) + return false; + + if (dsa_is_dsa_port(ds, port) || dsa_is_cpu_port(ds, port)) + return true; + + return false; +} + +static int dsa_switch_mtu(struct dsa_switch *ds, + struct dsa_notifier_mtu_info *info) +{ + int port, ret; + + if (!ds->ops->port_change_mtu) + return -EOPNOTSUPP; + + for (port = 0; port < ds->num_ports; port++) { + if (dsa_switch_mtu_match(ds, port, info)) { + ret = ds->ops->port_change_mtu(ds, port, info->mtu); + if (ret) + return ret; + } + } + + return 0; +} + static int dsa_switch_bridge_join(struct dsa_switch *ds, struct dsa_notifier_bridge_info *info) { @@ -328,6 +362,9 @@ static int dsa_switch_event(struct notifier_block *nb, case DSA_NOTIFIER_VLAN_DEL: err = dsa_switch_vlan_del(ds, info); break; + case DSA_NOTIFIER_MTU: + err = dsa_switch_mtu(ds, info); + break; default: err = -EOPNOTSUPP; break; |