/* called under bridge lock */
static struct net_bridge_port *new_nbp(struct net_bridge *br, struct net_device *dev)
{
int i;
struct net_bridge_port *p;
p = kmalloc(sizeof(*p), GFP_KERNEL);
if (p == NULL)
return p;
memset(p, 0, sizeof(*p));
p->br = br;
p->dev = dev;
p->path_cost = br_initial_port_cost(dev);
p->priority = 0x80;
dev->br_port = p;
for (i=1;i<255;i++)
if (br_get_port(br, i) == NULL)
break;
if (i == 255) {
kfree(p);
return NULL;
}
p->port_no = i;
br_init_port(p);
p->state = BR_STATE_DISABLED;
p->next = br->port_list;
br->port_list = p;
return p;
}
void br_init(void)
{ /* (4.8.1) */
int port_no;
debug_print("NET4: Ethernet Bridge 007 for NET4.0\r\n");
/* Set up brg device information */
bridge_info.instance = 0;
/*
* Form initial topology change time.
* The topology change timer is only used if this is the root bridge.
*/
bridge_info.topology_change_time = BRIDGE_MAX_AGE + BRIDGE_FORWARD_DELAY; /* (4.5.3.13) */
bridge_info.designated_root = bridge_info.bridge_id; /* (4.8.1.1) */
bridge_info.root_path_cost = Zero;
bridge_info.root_port = No_port;
bridge_info.bridge_max_age = BRIDGE_MAX_AGE;
bridge_info.bridge_hello_time = BRIDGE_HELLO_TIME;
bridge_info.bridge_forward_delay = BRIDGE_FORWARD_DELAY;
bridge_info.hold_time = HOLD_TIME;
bridge_info.max_age = bridge_info.bridge_max_age; /* (4.8.1.2) */
bridge_info.hello_time = bridge_info.bridge_hello_time;
bridge_info.forward_delay = bridge_info.bridge_forward_delay;
bridge_info.top_change_detected = 0;
bridge_info.top_change = 0;
max_port_used = One;
for (port_no = One; port_no <= No_of_ports; port_no++) { /* (4.8.1.4) */
/* initial state = Disable */
br_init_port(port_no);
}
br_stats.flags = 0; /*BR_UP | BR_DEBUG*/; /* enable bridge */
br_stats.policy = BR_ACCEPT; /* Enable bridge to accpet all protocols */
br_stats.exempt_protocols = 0;
/* Vova Oksman: register the function for the PROCfs "bridge" file */
}
/* called under bridge lock */
void br_stp_enable_port(struct net_bridge_port *p)
{
br_init_port(p);
br_port_state_selection(p->br);
}
