+++ /dev/null
-/* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
- * Junior University
- *
- * We are making the OpenFlow specification and associated documentation
- * (Software) available for public use and benefit with the expectation
- * that others will use, modify and enhance the Software and contribute
- * those enhancements back to the community. However, since we would
- * like to make the Software available for broadest use, with as few
- * restrictions as possible permission is hereby granted, free of
- * charge, to any person obtaining a copy of this Software to deal in
- * the Software under the copyrights without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * The name and trademarks of copyright holder(s) may NOT be used in
- * advertising or publicity pertaining to the Software or any
- * derivatives without specific, written prior permission.
- */
-
-#ifndef STP_H
-#define STP_H 1
-
-/* This is an implementation of Spanning Tree Protocol as described in IEEE
- * 802.1D-1998, clauses 8 and 9. Section numbers refer to this standard. */
-
-#include <stdbool.h>
-#include <stdint.h>
-#include "compiler.h"
-#include "util.h"
-
-/* Ethernet address used as the destination for STP frames. */
-extern const uint8_t stp_eth_addr[6];
-
-/* LLC field values used for STP frames. */
-#define STP_LLC_SSAP 0x42
-#define STP_LLC_DSAP 0x42
-#define STP_LLC_CNTL 0x03
-
-/* Bridge identifier. Top 16 bits are a priority value (numerically lower
- * values are higher priorities). Bottom 48 bits are MAC address of bridge. */
-typedef uint64_t stp_identifier;
-
-/* Basic STP functionality. */
-#define STP_MAX_PORTS 255
-struct stp *stp_create(const char *name, stp_identifier bridge_id,
- void (*send_bpdu)(const void *bpdu, size_t bpdu_size,
- int port_no, void *aux),
- void *aux);
-void stp_destroy(struct stp *);
-void stp_tick(struct stp *, int elapsed);
-void stp_set_bridge_id(struct stp *, stp_identifier bridge_id);
-void stp_set_bridge_priority(struct stp *, uint16_t new_priority);
-
-/* STP properties. */
-const char *stp_get_name(const struct stp *);
-stp_identifier stp_get_bridge_id(const struct stp *);
-stp_identifier stp_get_designated_root(const struct stp *);
-bool stp_is_root_bridge(const struct stp *);
-int stp_get_root_path_cost(const struct stp *);
-
-/* Obtaining STP ports. */
-struct stp_port *stp_get_port(struct stp *, int port_no);
-struct stp_port *stp_get_root_port(struct stp *);
-bool stp_get_changed_port(struct stp *, struct stp_port **portp);
-
-/* State of an STP port.
- *
- * A port is in exactly one state at any given time, but distinct bits are used
- * for states to allow testing for more than one state with a bit mask. */
-enum stp_state {
- STP_DISABLED = 1 << 0, /* 8.4.5: Disabled by management. */
- STP_LISTENING = 1 << 1, /* 8.4.2: Not learning or relaying frames. */
- STP_LEARNING = 1 << 2, /* 8.4.3: Learning but not relaying frames. */
- STP_FORWARDING = 1 << 3, /* 8.4.4: Learning and relaying frames. */
- STP_BLOCKING = 1 << 4 /* 8.4.1: Initial boot state. */
-};
-const char *stp_state_name(enum stp_state);
-bool stp_forward_in_state(enum stp_state);
-bool stp_learn_in_state(enum stp_state);
-
-void stp_received_bpdu(struct stp_port *, const void *bpdu, size_t bpdu_size);
-
-struct stp *stp_port_get_stp(struct stp_port *);
-int stp_port_no(const struct stp_port *);
-enum stp_state stp_port_get_state(const struct stp_port *);
-void stp_port_enable(struct stp_port *);
-void stp_port_disable(struct stp_port *);
-void stp_port_set_priority(struct stp_port *, uint8_t new_priority);
-void stp_port_set_path_cost(struct stp_port *, unsigned int path_cost);
-void stp_port_set_speed(struct stp_port *, unsigned int speed);
-void stp_port_enable_change_detection(struct stp_port *);
-void stp_port_disable_change_detection(struct stp_port *);
-
-#endif /* stp.h */
git://git.onelab.eu / sliver-openvswitch.git / blobdiff