diff options
Diffstat (limited to 'net/bridge/br_if.c')
| -rw-r--r-- | net/bridge/br_if.c | 59 |
1 files changed, 54 insertions, 5 deletions
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c index c367b3e1b..8217aecf0 100644 --- a/net/bridge/br_if.c +++ b/net/bridge/br_if.c @@ -36,10 +36,10 @@ */ static int port_cost(struct net_device *dev) { - struct ethtool_cmd ecmd; + struct ethtool_link_ksettings ecmd; - if (!__ethtool_get_settings(dev, &ecmd)) { - switch (ethtool_cmd_speed(&ecmd)) { + if (!__ethtool_get_link_ksettings(dev, &ecmd)) { + switch (ecmd.base.speed) { case SPEED_10000: return 2; case SPEED_1000: @@ -223,6 +223,31 @@ static void destroy_nbp_rcu(struct rcu_head *head) destroy_nbp(p); } +static unsigned get_max_headroom(struct net_bridge *br) +{ + unsigned max_headroom = 0; + struct net_bridge_port *p; + + list_for_each_entry(p, &br->port_list, list) { + unsigned dev_headroom = netdev_get_fwd_headroom(p->dev); + + if (dev_headroom > max_headroom) + max_headroom = dev_headroom; + } + + return max_headroom; +} + +static void update_headroom(struct net_bridge *br, int new_hr) +{ + struct net_bridge_port *p; + + list_for_each_entry(p, &br->port_list, list) + netdev_set_rx_headroom(p->dev, new_hr); + + br->dev->needed_headroom = new_hr; +} + /* Delete port(interface) from bridge is done in two steps. * via RCU. First step, marks device as down. That deletes * all the timers and stops new packets from flowing through. @@ -248,6 +273,9 @@ static void del_nbp(struct net_bridge_port *p) br_ifinfo_notify(RTM_DELLINK, p); list_del_rcu(&p->list); + if (netdev_get_fwd_headroom(dev) == br->dev->needed_headroom) + update_headroom(br, get_max_headroom(br)); + netdev_reset_rx_headroom(dev); nbp_vlan_flush(p); br_fdb_delete_by_port(br, p, 0, 1); @@ -409,6 +437,20 @@ int br_min_mtu(const struct net_bridge *br) return mtu; } +static void br_set_gso_limits(struct net_bridge *br) +{ + unsigned int gso_max_size = GSO_MAX_SIZE; + u16 gso_max_segs = GSO_MAX_SEGS; + const struct net_bridge_port *p; + + list_for_each_entry(p, &br->port_list, list) { + gso_max_size = min(gso_max_size, p->dev->gso_max_size); + gso_max_segs = min(gso_max_segs, p->dev->gso_max_segs); + } + br->dev->gso_max_size = gso_max_size; + br->dev->gso_max_segs = gso_max_segs; +} + /* * Recomputes features using slave's features */ @@ -438,6 +480,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev) { struct net_bridge_port *p; int err = 0; + unsigned br_hr, dev_hr; bool changed_addr; /* Don't allow bridging non-ethernet like devices, or DSA-enabled @@ -505,8 +548,12 @@ int br_add_if(struct net_bridge *br, struct net_device *dev) netdev_update_features(br->dev); - if (br->dev->needed_headroom < dev->needed_headroom) - br->dev->needed_headroom = dev->needed_headroom; + br_hr = br->dev->needed_headroom; + dev_hr = netdev_get_fwd_headroom(dev); + if (br_hr < dev_hr) + update_headroom(br, dev_hr); + else + netdev_set_rx_headroom(dev, br_hr); if (br_fdb_insert(br, p, dev->dev_addr, 0)) netdev_err(dev, "failed insert local address bridge forwarding table\n"); @@ -531,6 +578,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev) call_netdevice_notifiers(NETDEV_CHANGEADDR, br->dev); dev_set_mtu(br->dev, br_min_mtu(br)); + br_set_gso_limits(br); kobject_uevent(&p->kobj, KOBJ_ADD); @@ -577,6 +625,7 @@ int br_del_if(struct net_bridge *br, struct net_device *dev) del_nbp(p); dev_set_mtu(br->dev, br_min_mtu(br)); + br_set_gso_limits(br); spin_lock_bh(&br->lock); changed_addr = br_stp_recalculate_bridge_id(br); |