diff options
Diffstat (limited to 'net/dsa/slave.c')
| -rw-r--r-- | net/dsa/slave.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 6eb728efac43..42436ac6993b 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -229,9 +229,44 @@ static int dsa_slave_close(struct net_device *dev) return 0; } +/* Keep flooding enabled towards this port's CPU port as long as it serves at + * least one port in the tree that requires it. + */ +static void dsa_port_manage_cpu_flood(struct dsa_port *dp) +{ + struct switchdev_brport_flags flags = { + .mask = BR_FLOOD | BR_MCAST_FLOOD, + }; + struct dsa_switch_tree *dst = dp->ds->dst; + struct dsa_port *cpu_dp = dp->cpu_dp; + struct dsa_port *other_dp; + int err; + + list_for_each_entry(other_dp, &dst->ports, list) { + if (!dsa_port_is_user(other_dp)) + continue; + + if (other_dp->cpu_dp != cpu_dp) + continue; + + if (other_dp->slave->flags & IFF_ALLMULTI) + flags.val |= BR_MCAST_FLOOD; + if (other_dp->slave->flags & IFF_PROMISC) + flags.val |= BR_FLOOD; + } + + err = dsa_port_pre_bridge_flags(dp, flags, NULL); + if (err) + return; + + dsa_port_bridge_flags(cpu_dp, flags, NULL); +} + static void dsa_slave_change_rx_flags(struct net_device *dev, int change) { struct net_device *master = dsa_slave_to_master(dev); + struct dsa_port *dp = dsa_slave_to_port(dev); + struct dsa_switch *ds = dp->ds; if (change & IFF_ALLMULTI) dev_set_allmulti(master, @@ -239,6 +274,10 @@ static void dsa_slave_change_rx_flags(struct net_device *dev, int change) if (change & IFF_PROMISC) dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1); + + if (dsa_switch_supports_uc_filtering(ds) && + dsa_switch_supports_mc_filtering(ds)) + dsa_port_manage_cpu_flood(dp); } static void dsa_slave_set_rx_mode(struct net_device *dev) |