diff options
Diffstat (limited to 'net/dsa/switch.c')
| -rw-r--r-- | net/dsa/switch.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/net/dsa/switch.c b/net/dsa/switch.c index f477053308d2..540770ecc8b0 100644 --- a/net/dsa/switch.c +++ b/net/dsa/switch.c @@ -12,9 +12,52 @@ #include <linux/netdevice.h> #include <linux/notifier.h> +#include <net/switchdev.h> #include "dsa_priv.h" +static unsigned int dsa_switch_fastest_ageing_time(struct dsa_switch *ds, + unsigned int ageing_time) +{ + int i; + + for (i = 0; i < ds->num_ports; ++i) { + struct dsa_port *dp = &ds->ports[i]; + + if (dp->ageing_time && dp->ageing_time < ageing_time) + ageing_time = dp->ageing_time; + } + + return ageing_time; +} + +static int dsa_switch_ageing_time(struct dsa_switch *ds, + struct dsa_notifier_ageing_time_info *info) +{ + unsigned int ageing_time = info->ageing_time; + struct switchdev_trans *trans = info->trans; + + /* Do not care yet about other switch chips of the fabric */ + if (ds->index != info->sw_index) + return 0; + + if (switchdev_trans_ph_prepare(trans)) { + if (ds->ageing_time_min && ageing_time < ds->ageing_time_min) + return -ERANGE; + if (ds->ageing_time_max && ageing_time > ds->ageing_time_max) + return -ERANGE; + return 0; + } + + /* Program the fastest ageing time in case of multiple bridges */ + ageing_time = dsa_switch_fastest_ageing_time(ds, ageing_time); + + if (ds->ops->set_ageing_time) + return ds->ops->set_ageing_time(ds, ageing_time); + + return 0; +} + static int dsa_switch_bridge_join(struct dsa_switch *ds, struct dsa_notifier_bridge_info *info) { @@ -48,6 +91,9 @@ static int dsa_switch_event(struct notifier_block *nb, int err; switch (event) { + case DSA_NOTIFIER_AGEING_TIME: + err = dsa_switch_ageing_time(ds, info); + break; case DSA_NOTIFIER_BRIDGE_JOIN: err = dsa_switch_bridge_join(ds, info); break; |