Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / net / bridge / br_private_stp.h

diff --git a/kernel/net/bridge/br_private_stp.h b/kernel/net/bridge/br_private_stp.h
new file mode 100644 (file)
index 0000000..2fe910c
--- /dev/null
+++ b/kernel/net/bridge/br_private_stp.h
@@ -0,0 +1,69 @@
+/*
+ *     Linux ethernet bridge
+ *
+ *     Authors:
+ *     Lennert Buytenhek               <buytenh@gnu.org>
+ *
+ *     This program is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License
+ *     as published by the Free Software Foundation; either version
+ *     2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _BR_PRIVATE_STP_H
+#define _BR_PRIVATE_STP_H
+
+#define BPDU_TYPE_CONFIG 0
+#define BPDU_TYPE_TCN 0x80
+
+/* IEEE 802.1D-1998 timer values */
+#define BR_MIN_HELLO_TIME      (1*HZ)
+#define BR_MAX_HELLO_TIME      (10*HZ)
+
+#define BR_MIN_FORWARD_DELAY   (2*HZ)
+#define BR_MAX_FORWARD_DELAY   (30*HZ)
+
+#define BR_MIN_MAX_AGE         (6*HZ)
+#define BR_MAX_MAX_AGE         (40*HZ)
+
+#define BR_MIN_PATH_COST       1
+#define BR_MAX_PATH_COST       65535
+
+struct br_config_bpdu {
+       unsigned int    topology_change:1;
+       unsigned int    topology_change_ack:1;
+       bridge_id       root;
+       int             root_path_cost;
+       bridge_id       bridge_id;
+       port_id         port_id;
+       int             message_age;
+       int             max_age;
+       int             hello_time;
+       int             forward_delay;
+};
+
+/* called under bridge lock */
+static inline int br_is_designated_port(const struct net_bridge_port *p)
+{
+       return !memcmp(&p->designated_bridge, &p->br->bridge_id, 8) &&
+               (p->designated_port == p->port_id);
+}
+
+
+/* br_stp.c */
+void br_become_root_bridge(struct net_bridge *br);
+void br_config_bpdu_generation(struct net_bridge *);
+void br_configuration_update(struct net_bridge *);
+void br_port_state_selection(struct net_bridge *);
+void br_received_config_bpdu(struct net_bridge_port *p,
+                            const struct br_config_bpdu *bpdu);
+void br_received_tcn_bpdu(struct net_bridge_port *p);
+void br_transmit_config(struct net_bridge_port *p);
+void br_transmit_tcn(struct net_bridge *br);
+void br_topology_change_detection(struct net_bridge *br);
+
+/* br_stp_bpdu.c */
+void br_send_config_bpdu(struct net_bridge_port *, struct br_config_bpdu *);
+void br_send_tcn_bpdu(struct net_bridge_port *);
+
+#endif