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Diffstat (limited to 'net/bridge/br_if.c')
-rw-r--r--net/bridge/br_if.c43
1 files changed, 38 insertions, 5 deletions
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index c367b3e1b5ac..a73df3315df9 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);
@@ -438,6 +466,7 @@ 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 +534,12 @@ 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");