2005-06-05 02:59:26 +00:00
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/* $NetBSD: bridgestp.c,v 1.5 2003/11/28 08:56:48 keihan Exp $ */
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/*
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* Copyright (c) 2000 Jason L. Wright (jason@thought.net)
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2006-11-01 09:07:47 +00:00
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* Copyright (c) 2006 Andrew Thompson (thompsa@FreeBSD.org)
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2005-06-05 02:59:26 +00:00
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* OpenBSD: bridgestp.c,v 1.5 2001/03/22 03:48:29 jason Exp
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*/
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/*
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* Implementation of the spanning tree protocol as defined in
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2006-11-01 09:07:47 +00:00
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* ISO/IEC 802.1D-2004, June 9, 2004.
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2005-06-05 02:59:26 +00:00
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/kernel.h>
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#include <sys/callout.h>
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2006-07-26 10:43:02 +00:00
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#include <sys/module.h>
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2005-06-05 02:59:26 +00:00
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#include <sys/proc.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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2006-08-02 02:47:27 +00:00
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#include <sys/taskqueue.h>
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2005-06-05 02:59:26 +00:00
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#include <net/if_llc.h>
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#include <net/if_media.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/in_var.h>
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#include <netinet/if_ether.h>
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2006-07-26 10:43:02 +00:00
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#include <net/bridgestp.h>
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2005-06-05 02:59:26 +00:00
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2006-11-01 09:07:47 +00:00
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#ifdef BRIDGESTP_DEBUG
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#define DPRINTF(fmt, arg...) printf("bstp: " fmt, ##arg)
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#else
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#define DPRINTF(fmt, arg...)
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#endif
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#define PV2ADDR(pv, eaddr) do { \
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eaddr[0] = pv >> 40; \
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eaddr[1] = pv >> 32; \
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eaddr[2] = pv >> 24; \
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eaddr[3] = pv >> 16; \
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eaddr[4] = pv >> 8; \
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eaddr[5] = pv >> 0; \
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} while (0)
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#define INFO_BETTER 1
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#define INFO_SAME 0
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#define INFO_WORSE -1
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2005-06-05 02:59:26 +00:00
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const uint8_t bstp_etheraddr[] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
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2006-07-26 10:43:02 +00:00
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LIST_HEAD(, bstp_state) bstp_list;
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static struct mtx bstp_list_mtx;
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2006-11-01 09:07:47 +00:00
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static void bstp_transmit(struct bstp_state *, struct bstp_port *);
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static void bstp_transmit_bpdu(struct bstp_state *, struct bstp_port *);
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static void bstp_transmit_tcn(struct bstp_state *, struct bstp_port *);
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static void bstp_decode_bpdu(struct bstp_port *, struct bstp_cbpdu *,
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2005-10-14 10:38:12 +00:00
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struct bstp_config_unit *);
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2006-11-01 09:07:47 +00:00
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static void bstp_send_bpdu(struct bstp_state *, struct bstp_port *,
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struct bstp_cbpdu *);
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2006-07-26 10:43:02 +00:00
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static void bstp_enqueue(struct ifnet *, struct mbuf *);
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2006-11-01 09:07:47 +00:00
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static int bstp_pdu_flags(struct bstp_port *);
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static void bstp_received_stp(struct bstp_state *, struct bstp_port *,
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2006-11-02 08:04:13 +00:00
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struct mbuf **, struct bstp_tbpdu *);
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2006-11-01 09:07:47 +00:00
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static void bstp_received_rstp(struct bstp_state *, struct bstp_port *,
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2006-11-02 08:04:13 +00:00
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struct mbuf **, struct bstp_tbpdu *);
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2006-11-01 09:07:47 +00:00
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static void bstp_received_tcn(struct bstp_state *, struct bstp_port *,
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struct bstp_tcn_unit *);
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static void bstp_received_bpdu(struct bstp_state *, struct bstp_port *,
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struct bstp_config_unit *);
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static int bstp_pdu_rcvtype(struct bstp_port *, struct bstp_config_unit *);
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static int bstp_pdu_bettersame(struct bstp_port *, int);
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static int bstp_info_cmp(struct bstp_pri_vector *,
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struct bstp_pri_vector *);
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static int bstp_info_superior(struct bstp_pri_vector *,
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struct bstp_pri_vector *);
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static void bstp_assign_roles(struct bstp_state *);
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static void bstp_update_roles(struct bstp_state *, struct bstp_port *);
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static void bstp_update_state(struct bstp_state *, struct bstp_port *);
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static void bstp_update_tc(struct bstp_port *);
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static void bstp_update_info(struct bstp_port *);
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static void bstp_set_other_tcprop(struct bstp_port *);
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static void bstp_set_all_reroot(struct bstp_state *);
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static void bstp_set_all_sync(struct bstp_state *);
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static void bstp_set_port_state(struct bstp_port *, int);
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static void bstp_set_port_role(struct bstp_port *, int);
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static void bstp_set_port_proto(struct bstp_port *, int);
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static void bstp_set_port_tc(struct bstp_port *, int);
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static void bstp_set_timer_tc(struct bstp_port *);
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static void bstp_set_timer_msgage(struct bstp_port *);
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static int bstp_rerooted(struct bstp_state *, struct bstp_port *);
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static uint32_t bstp_calc_path_cost(struct bstp_port *);
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static void bstp_notify_state(void *, int);
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static void bstp_notify_rtage(void *, int);
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static void bstp_ifupdstatus(struct bstp_state *, struct bstp_port *);
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static void bstp_enable_port(struct bstp_state *, struct bstp_port *);
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static void bstp_disable_port(struct bstp_state *, struct bstp_port *);
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2005-10-14 10:38:12 +00:00
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static void bstp_tick(void *);
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2006-07-26 10:43:02 +00:00
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static void bstp_timer_start(struct bstp_timer *, uint16_t);
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static void bstp_timer_stop(struct bstp_timer *);
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2006-11-01 09:07:47 +00:00
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static void bstp_timer_latch(struct bstp_timer *);
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static int bstp_timer_expired(struct bstp_timer *);
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static void bstp_hello_timer_expiry(struct bstp_state *,
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2006-07-26 10:43:02 +00:00
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struct bstp_port *);
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2006-11-01 09:07:47 +00:00
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static void bstp_message_age_expiry(struct bstp_state *,
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2006-07-26 10:43:02 +00:00
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struct bstp_port *);
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2006-11-01 09:07:47 +00:00
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static void bstp_migrate_delay_expiry(struct bstp_state *,
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struct bstp_port *);
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static void bstp_edge_delay_expiry(struct bstp_state *,
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2006-07-26 10:43:02 +00:00
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struct bstp_port *);
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2006-02-28 00:13:24 +00:00
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static int bstp_addr_cmp(const uint8_t *, const uint8_t *);
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2006-11-01 09:07:47 +00:00
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static int bstp_same_bridgeid(uint64_t, uint64_t);
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static void bstp_reinit(struct bstp_state *);
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2005-10-14 10:38:12 +00:00
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static void
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2006-11-01 09:07:47 +00:00
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bstp_transmit(struct bstp_state *bs, struct bstp_port *bp)
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2005-06-05 02:59:26 +00:00
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{
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2006-11-09 22:50:49 +00:00
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if (bs->bs_running == 0)
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return;
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2006-11-01 09:07:47 +00:00
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/*
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* a PDU can only be sent if we have tx quota left and the
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* hello timer is running.
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*/
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if (bp->bp_hello_timer.active == 0) {
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/* Test if it needs to be reset */
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bstp_hello_timer_expiry(bs, bp);
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2005-06-05 02:59:26 +00:00
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return;
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}
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2006-11-01 09:07:47 +00:00
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if (bp->bp_txcount > bs->bs_txholdcount)
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/* Ran out of karma */
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return;
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2005-06-05 02:59:26 +00:00
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2006-11-01 09:07:47 +00:00
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if (bp->bp_protover == BSTP_PROTO_RSTP) {
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bstp_transmit_bpdu(bs, bp);
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bp->bp_tc_ack = 0;
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} else { /* STP */
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switch (bp->bp_role) {
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case BSTP_ROLE_DESIGNATED:
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bstp_transmit_bpdu(bs, bp);
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bp->bp_tc_ack = 0;
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break;
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case BSTP_ROLE_ROOT:
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bstp_transmit_tcn(bs, bp);
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break;
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}
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2005-06-05 02:59:26 +00:00
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}
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2006-11-01 09:07:47 +00:00
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bstp_timer_start(&bp->bp_hello_timer, bp->bp_desg_htime);
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bp->bp_flags &= ~BSTP_PORT_NEWINFO;
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2005-06-05 02:59:26 +00:00
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}
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2005-10-14 10:38:12 +00:00
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static void
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2006-11-01 09:07:47 +00:00
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bstp_transmit_bpdu(struct bstp_state *bs, struct bstp_port *bp)
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2005-06-05 02:59:26 +00:00
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{
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struct bstp_cbpdu bpdu;
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2006-07-26 10:43:02 +00:00
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BSTP_LOCK_ASSERT(bs);
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2005-06-05 02:59:26 +00:00
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2006-11-01 09:07:47 +00:00
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bpdu.cbu_rootpri = htons(bp->bp_desg_pv.pv_root_id >> 48);
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PV2ADDR(bp->bp_desg_pv.pv_root_id, bpdu.cbu_rootaddr);
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2006-07-26 10:43:02 +00:00
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2006-11-01 09:07:47 +00:00
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bpdu.cbu_rootpathcost = htonl(bp->bp_desg_pv.pv_cost);
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2005-06-05 02:59:26 +00:00
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2006-11-01 09:07:47 +00:00
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bpdu.cbu_bridgepri = htons(bp->bp_desg_pv.pv_dbridge_id >> 48);
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PV2ADDR(bp->bp_desg_pv.pv_dbridge_id, bpdu.cbu_bridgeaddr);
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2006-07-26 10:43:02 +00:00
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2006-11-01 09:07:47 +00:00
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bpdu.cbu_portid = htons(bp->bp_port_id);
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bpdu.cbu_messageage = htons(bp->bp_desg_msg_age);
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bpdu.cbu_maxage = htons(bp->bp_desg_max_age);
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bpdu.cbu_hellotime = htons(bp->bp_desg_htime);
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bpdu.cbu_forwarddelay = htons(bp->bp_desg_fdelay);
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2005-06-05 02:59:26 +00:00
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2006-11-01 09:07:47 +00:00
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bpdu.cbu_flags = bstp_pdu_flags(bp);
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2005-06-05 02:59:26 +00:00
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2006-11-01 09:07:47 +00:00
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switch (bp->bp_protover) {
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case BSTP_PROTO_STP:
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bpdu.cbu_bpdutype = BSTP_MSGTYPE_CFG;
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break;
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2006-07-26 10:43:02 +00:00
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2006-11-01 09:07:47 +00:00
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case BSTP_PROTO_RSTP:
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bpdu.cbu_bpdutype = BSTP_MSGTYPE_RSTP;
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break;
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2005-06-05 02:59:26 +00:00
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}
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2006-11-01 09:07:47 +00:00
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bstp_send_bpdu(bs, bp, &bpdu);
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2005-06-05 02:59:26 +00:00
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}
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2005-10-14 10:38:12 +00:00
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static void
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2006-11-01 09:07:47 +00:00
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bstp_transmit_tcn(struct bstp_state *bs, struct bstp_port *bp)
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2005-06-05 02:59:26 +00:00
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{
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struct bstp_tbpdu bpdu;
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2006-07-26 10:43:02 +00:00
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struct ifnet *ifp = bp->bp_ifp;
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2005-06-05 02:59:26 +00:00
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struct ether_header *eh;
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struct mbuf *m;
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2006-11-01 09:07:47 +00:00
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KASSERT(bp == bs->bs_root_port, ("%s: bad root port\n", __func__));
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2005-06-05 02:59:26 +00:00
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2005-08-09 10:20:02 +00:00
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if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
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2005-06-05 02:59:26 +00:00
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return;
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MGETHDR(m, M_DONTWAIT, MT_DATA);
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if (m == NULL)
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return;
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m->m_pkthdr.rcvif = ifp;
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m->m_pkthdr.len = sizeof(*eh) + sizeof(bpdu);
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m->m_len = m->m_pkthdr.len;
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eh = mtod(m, struct ether_header *);
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memcpy(eh->ether_shost, IF_LLADDR(ifp), ETHER_ADDR_LEN);
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memcpy(eh->ether_dhost, bstp_etheraddr, ETHER_ADDR_LEN);
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eh->ether_type = htons(sizeof(bpdu));
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bpdu.tbu_ssap = bpdu.tbu_dsap = LLC_8021D_LSAP;
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bpdu.tbu_ctl = LLC_UI;
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bpdu.tbu_protoid = 0;
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bpdu.tbu_protover = 0;
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bpdu.tbu_bpdutype = BSTP_MSGTYPE_TCN;
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memcpy(mtod(m, caddr_t) + sizeof(*eh), &bpdu, sizeof(bpdu));
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2006-11-01 09:07:47 +00:00
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bp->bp_txcount++;
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2006-07-26 10:43:02 +00:00
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bstp_enqueue(ifp, m);
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2005-06-05 02:59:26 +00:00
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}
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2005-10-14 10:38:12 +00:00
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static void
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2006-11-01 09:07:47 +00:00
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bstp_decode_bpdu(struct bstp_port *bp, struct bstp_cbpdu *cpdu,
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struct bstp_config_unit *cu)
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2005-06-05 02:59:26 +00:00
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{
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2006-11-01 09:07:47 +00:00
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int flags;
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cu->cu_pv.pv_root_id =
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(((uint64_t)ntohs(cpdu->cbu_rootpri)) << 48) |
|
|
|
|
(((uint64_t)cpdu->cbu_rootaddr[0]) << 40) |
|
|
|
|
(((uint64_t)cpdu->cbu_rootaddr[1]) << 32) |
|
|
|
|
(((uint64_t)cpdu->cbu_rootaddr[2]) << 24) |
|
|
|
|
(((uint64_t)cpdu->cbu_rootaddr[3]) << 16) |
|
|
|
|
(((uint64_t)cpdu->cbu_rootaddr[4]) << 8) |
|
|
|
|
(((uint64_t)cpdu->cbu_rootaddr[5]) << 0);
|
|
|
|
|
|
|
|
cu->cu_pv.pv_dbridge_id =
|
|
|
|
(((uint64_t)ntohs(cpdu->cbu_bridgepri)) << 48) |
|
|
|
|
(((uint64_t)cpdu->cbu_bridgeaddr[0]) << 40) |
|
|
|
|
(((uint64_t)cpdu->cbu_bridgeaddr[1]) << 32) |
|
|
|
|
(((uint64_t)cpdu->cbu_bridgeaddr[2]) << 24) |
|
|
|
|
(((uint64_t)cpdu->cbu_bridgeaddr[3]) << 16) |
|
|
|
|
(((uint64_t)cpdu->cbu_bridgeaddr[4]) << 8) |
|
|
|
|
(((uint64_t)cpdu->cbu_bridgeaddr[5]) << 0);
|
|
|
|
|
|
|
|
cu->cu_pv.pv_cost = ntohl(cpdu->cbu_rootpathcost);
|
|
|
|
cu->cu_message_age = ntohs(cpdu->cbu_messageage);
|
|
|
|
cu->cu_max_age = ntohs(cpdu->cbu_maxage);
|
|
|
|
cu->cu_hello_time = ntohs(cpdu->cbu_hellotime);
|
|
|
|
cu->cu_forward_delay = ntohs(cpdu->cbu_forwarddelay);
|
|
|
|
cu->cu_pv.pv_dport_id = ntohs(cpdu->cbu_portid);
|
|
|
|
cu->cu_pv.pv_port_id = bp->bp_port_id;
|
|
|
|
cu->cu_message_type = cpdu->cbu_bpdutype;
|
|
|
|
|
|
|
|
/* Strip off unused flags in STP mode */
|
|
|
|
flags = cpdu->cbu_flags;
|
|
|
|
switch (cpdu->cbu_protover) {
|
|
|
|
case BSTP_PROTO_STP:
|
|
|
|
flags &= BSTP_PDU_STPMASK;
|
|
|
|
/* A STP BPDU explicitly conveys a Designated Port */
|
|
|
|
cu->cu_role = BSTP_ROLE_DESIGNATED;
|
|
|
|
break;
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
case BSTP_PROTO_RSTP:
|
|
|
|
flags &= BSTP_PDU_RSTPMASK;
|
|
|
|
break;
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
cu->cu_topology_change_ack =
|
|
|
|
(flags & BSTP_PDU_F_TCA) ? 1 : 0;
|
|
|
|
cu->cu_proposal =
|
|
|
|
(flags & BSTP_PDU_F_P) ? 1 : 0;
|
|
|
|
cu->cu_agree =
|
|
|
|
(flags & BSTP_PDU_F_A) ? 1 : 0;
|
|
|
|
cu->cu_learning =
|
|
|
|
(flags & BSTP_PDU_F_L) ? 1 : 0;
|
|
|
|
cu->cu_forwarding =
|
|
|
|
(flags & BSTP_PDU_F_F) ? 1 : 0;
|
|
|
|
cu->cu_topology_change =
|
|
|
|
(flags & BSTP_PDU_F_TC) ? 1 : 0;
|
|
|
|
|
|
|
|
switch ((flags & BSTP_PDU_PRMASK) >> BSTP_PDU_PRSHIFT) {
|
|
|
|
case BSTP_PDU_F_ROOT:
|
|
|
|
cu->cu_role = BSTP_ROLE_ROOT;
|
|
|
|
break;
|
|
|
|
case BSTP_PDU_F_ALT:
|
|
|
|
cu->cu_role = BSTP_ROLE_ALTERNATE;
|
|
|
|
break;
|
|
|
|
case BSTP_PDU_F_DESG:
|
|
|
|
cu->cu_role = BSTP_ROLE_DESIGNATED;
|
|
|
|
break;
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-10-14 10:38:12 +00:00
|
|
|
static void
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_send_bpdu(struct bstp_state *bs, struct bstp_port *bp,
|
|
|
|
struct bstp_cbpdu *bpdu)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-11-01 09:07:47 +00:00
|
|
|
struct ifnet *ifp;
|
|
|
|
struct mbuf *m;
|
|
|
|
struct ether_header *eh;
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-07-26 10:43:02 +00:00
|
|
|
BSTP_LOCK_ASSERT(bs);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
ifp = bp->bp_ifp;
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
|
|
|
|
return;
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
MGETHDR(m, M_DONTWAIT, MT_DATA);
|
|
|
|
if (m == NULL)
|
|
|
|
return;
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
eh = mtod(m, struct ether_header *);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
bpdu->cbu_ssap = bpdu->cbu_dsap = LLC_8021D_LSAP;
|
|
|
|
bpdu->cbu_ctl = LLC_UI;
|
|
|
|
bpdu->cbu_protoid = htons(BSTP_PROTO_ID);
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
memcpy(eh->ether_shost, IF_LLADDR(ifp), ETHER_ADDR_LEN);
|
|
|
|
memcpy(eh->ether_dhost, bstp_etheraddr, ETHER_ADDR_LEN);
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
switch (bpdu->cbu_bpdutype) {
|
|
|
|
case BSTP_MSGTYPE_CFG:
|
|
|
|
bpdu->cbu_protover = BSTP_PROTO_STP;
|
|
|
|
m->m_pkthdr.len = sizeof(*eh) + BSTP_BPDU_STP_LEN;
|
|
|
|
eh->ether_type = htons(BSTP_BPDU_STP_LEN);
|
|
|
|
memcpy(mtod(m, caddr_t) + sizeof(*eh), bpdu,
|
|
|
|
BSTP_BPDU_STP_LEN);
|
|
|
|
break;
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
case BSTP_MSGTYPE_RSTP:
|
|
|
|
bpdu->cbu_protover = BSTP_PROTO_RSTP;
|
|
|
|
bpdu->cbu_versionlen = htons(0);
|
|
|
|
m->m_pkthdr.len = sizeof(*eh) + BSTP_BPDU_RSTP_LEN;
|
|
|
|
eh->ether_type = htons(BSTP_BPDU_RSTP_LEN);
|
|
|
|
memcpy(mtod(m, caddr_t) + sizeof(*eh), bpdu,
|
|
|
|
BSTP_BPDU_RSTP_LEN);
|
|
|
|
break;
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
default:
|
|
|
|
panic("not implemented");
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
2006-11-01 09:07:47 +00:00
|
|
|
m->m_pkthdr.rcvif = ifp;
|
|
|
|
m->m_len = m->m_pkthdr.len;
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
bp->bp_txcount++;
|
|
|
|
bstp_enqueue(ifp, m);
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
|
2005-10-14 10:38:12 +00:00
|
|
|
static void
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_enqueue(struct ifnet *dst_ifp, struct mbuf *m)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-11-01 09:07:47 +00:00
|
|
|
int err = 0;
|
2006-08-02 02:47:27 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
IFQ_ENQUEUE(&dst_ifp->if_snd, m, err);
|
2006-08-02 02:51:42 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
if ((dst_ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
|
|
|
|
(*dst_ifp->if_start)(dst_ifp);
|
2006-08-02 02:47:27 +00:00
|
|
|
}
|
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
static int
|
|
|
|
bstp_pdu_flags(struct bstp_port *bp)
|
2006-08-02 02:47:27 +00:00
|
|
|
{
|
2006-11-01 09:07:47 +00:00
|
|
|
int flags = 0;
|
2006-08-02 02:47:27 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
if (bp->bp_proposing && bp->bp_state != BSTP_IFSTATE_FORWARDING)
|
|
|
|
flags |= BSTP_PDU_F_P;
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
if (bp->bp_agree)
|
|
|
|
flags |= BSTP_PDU_F_A;
|
2006-07-31 20:24:46 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
if (bp->bp_tc_timer.active)
|
|
|
|
flags |= BSTP_PDU_F_TC;
|
|
|
|
|
|
|
|
if (bp->bp_tc_ack)
|
|
|
|
flags |= BSTP_PDU_F_TCA;
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
switch (bp->bp_state) {
|
|
|
|
case BSTP_IFSTATE_LEARNING:
|
|
|
|
flags |= BSTP_PDU_F_L;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_IFSTATE_FORWARDING:
|
|
|
|
flags |= (BSTP_PDU_F_L | BSTP_PDU_F_F);
|
|
|
|
break;
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
switch (bp->bp_role) {
|
|
|
|
case BSTP_ROLE_ROOT:
|
|
|
|
flags |=
|
|
|
|
(BSTP_PDU_F_ROOT << BSTP_PDU_PRSHIFT);
|
|
|
|
break;
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
case BSTP_ROLE_ALTERNATE:
|
|
|
|
case BSTP_ROLE_BACKUP: /* fall through */
|
|
|
|
flags |=
|
|
|
|
(BSTP_PDU_F_ALT << BSTP_PDU_PRSHIFT);
|
|
|
|
break;
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
case BSTP_ROLE_DESIGNATED:
|
|
|
|
flags |=
|
|
|
|
(BSTP_PDU_F_DESG << BSTP_PDU_PRSHIFT);
|
|
|
|
break;
|
|
|
|
}
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
/* Strip off unused flags in either mode */
|
|
|
|
switch (bp->bp_protover) {
|
|
|
|
case BSTP_PROTO_STP:
|
|
|
|
flags &= BSTP_PDU_STPMASK;
|
|
|
|
break;
|
|
|
|
case BSTP_PROTO_RSTP:
|
|
|
|
flags &= BSTP_PDU_RSTPMASK;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return (flags);
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
struct mbuf *
|
2006-07-26 10:43:02 +00:00
|
|
|
bstp_input(struct bstp_port *bp, struct ifnet *ifp, struct mbuf *m)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-07-26 10:43:02 +00:00
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
2005-06-05 02:59:26 +00:00
|
|
|
struct ether_header *eh;
|
|
|
|
struct bstp_tbpdu tpdu;
|
|
|
|
uint16_t len;
|
|
|
|
|
2006-07-26 10:43:02 +00:00
|
|
|
if (bp->bp_active == 0) {
|
|
|
|
m_freem(m);
|
|
|
|
return (NULL);
|
|
|
|
}
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-07-26 10:43:02 +00:00
|
|
|
BSTP_LOCK(bs);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-07-26 10:43:02 +00:00
|
|
|
eh = mtod(m, struct ether_header *);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
|
|
|
len = ntohs(eh->ether_type);
|
|
|
|
if (len < sizeof(tpdu))
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
m_adj(m, ETHER_HDR_LEN);
|
|
|
|
|
|
|
|
if (m->m_pkthdr.len > len)
|
|
|
|
m_adj(m, len - m->m_pkthdr.len);
|
|
|
|
if (m->m_len < sizeof(tpdu) &&
|
|
|
|
(m = m_pullup(m, sizeof(tpdu))) == NULL)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
memcpy(&tpdu, mtod(m, caddr_t), sizeof(tpdu));
|
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
/* basic packet checks */
|
2005-06-05 02:59:26 +00:00
|
|
|
if (tpdu.tbu_dsap != LLC_8021D_LSAP ||
|
|
|
|
tpdu.tbu_ssap != LLC_8021D_LSAP ||
|
|
|
|
tpdu.tbu_ctl != LLC_UI)
|
|
|
|
goto out;
|
2006-11-01 09:07:47 +00:00
|
|
|
if (tpdu.tbu_protoid != BSTP_PROTO_ID)
|
2005-06-05 02:59:26 +00:00
|
|
|
goto out;
|
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
/*
|
|
|
|
* We can treat later versions of the PDU as the same as the maximum
|
|
|
|
* version we implement. All additional parameters/flags are ignored.
|
|
|
|
*/
|
|
|
|
if (tpdu.tbu_protover > BSTP_PROTO_MAX)
|
|
|
|
tpdu.tbu_protover = BSTP_PROTO_MAX;
|
|
|
|
|
|
|
|
if (tpdu.tbu_protover != bp->bp_protover) {
|
|
|
|
/*
|
|
|
|
* Wait for the migration delay timer to expire before changing
|
|
|
|
* protocol version to avoid flip-flops.
|
|
|
|
*/
|
|
|
|
if (bp->bp_flags & BSTP_PORT_CANMIGRATE)
|
|
|
|
bstp_set_port_proto(bp, tpdu.tbu_protover);
|
|
|
|
else
|
2005-06-05 02:59:26 +00:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
/* Clear operedge upon receiving a PDU on the port */
|
|
|
|
bp->bp_operedge = 0;
|
|
|
|
bstp_timer_start(&bp->bp_edge_delay_timer,
|
|
|
|
BSTP_DEFAULT_MIGRATE_DELAY);
|
|
|
|
|
|
|
|
switch (tpdu.tbu_protover) {
|
|
|
|
case BSTP_PROTO_STP:
|
2006-11-02 08:04:13 +00:00
|
|
|
bstp_received_stp(bs, bp, &m, &tpdu);
|
2006-11-01 09:07:47 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_PROTO_RSTP:
|
2006-11-02 08:04:13 +00:00
|
|
|
bstp_received_rstp(bs, bp, &m, &tpdu);
|
2006-11-01 09:07:47 +00:00
|
|
|
break;
|
|
|
|
}
|
2005-12-17 10:03:48 +00:00
|
|
|
out:
|
2006-07-26 10:43:02 +00:00
|
|
|
BSTP_UNLOCK(bs);
|
2005-06-05 02:59:26 +00:00
|
|
|
if (m)
|
|
|
|
m_freem(m);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
2005-10-14 10:38:12 +00:00
|
|
|
static void
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_received_stp(struct bstp_state *bs, struct bstp_port *bp,
|
2006-11-02 08:04:13 +00:00
|
|
|
struct mbuf **mp, struct bstp_tbpdu *tpdu)
|
2006-11-01 09:07:47 +00:00
|
|
|
{
|
|
|
|
struct bstp_cbpdu cpdu;
|
|
|
|
struct bstp_config_unit *cu = &bp->bp_msg_cu;
|
|
|
|
struct bstp_tcn_unit tu;
|
|
|
|
|
|
|
|
switch (tpdu->tbu_bpdutype) {
|
|
|
|
case BSTP_MSGTYPE_TCN:
|
|
|
|
tu.tu_message_type = tpdu->tbu_bpdutype;
|
|
|
|
bstp_received_tcn(bs, bp, &tu);
|
|
|
|
break;
|
|
|
|
case BSTP_MSGTYPE_CFG:
|
2006-11-02 08:04:13 +00:00
|
|
|
if ((*mp)->m_len < BSTP_BPDU_STP_LEN &&
|
|
|
|
(*mp = m_pullup(*mp, BSTP_BPDU_STP_LEN)) == NULL)
|
2006-11-01 09:07:47 +00:00
|
|
|
return;
|
2006-11-02 08:04:13 +00:00
|
|
|
memcpy(&cpdu, mtod(*mp, caddr_t), BSTP_BPDU_STP_LEN);
|
2006-11-01 09:07:47 +00:00
|
|
|
|
|
|
|
bstp_decode_bpdu(bp, &cpdu, cu);
|
|
|
|
bstp_received_bpdu(bs, bp, cu);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_received_rstp(struct bstp_state *bs, struct bstp_port *bp,
|
2006-11-02 08:04:13 +00:00
|
|
|
struct mbuf **mp, struct bstp_tbpdu *tpdu)
|
2006-11-01 09:07:47 +00:00
|
|
|
{
|
|
|
|
struct bstp_cbpdu cpdu;
|
|
|
|
struct bstp_config_unit *cu = &bp->bp_msg_cu;
|
|
|
|
|
2006-11-02 08:04:13 +00:00
|
|
|
if (tpdu->tbu_bpdutype != BSTP_MSGTYPE_RSTP)
|
2006-11-01 09:07:47 +00:00
|
|
|
return;
|
|
|
|
|
2006-11-02 08:04:13 +00:00
|
|
|
if ((*mp)->m_len < BSTP_BPDU_RSTP_LEN &&
|
|
|
|
(*mp = m_pullup(*mp, BSTP_BPDU_RSTP_LEN)) == NULL)
|
2006-11-01 09:07:47 +00:00
|
|
|
return;
|
2006-11-02 08:04:13 +00:00
|
|
|
memcpy(&cpdu, mtod(*mp, caddr_t), BSTP_BPDU_RSTP_LEN);
|
2006-11-01 09:07:47 +00:00
|
|
|
|
|
|
|
bstp_decode_bpdu(bp, &cpdu, cu);
|
|
|
|
bstp_received_bpdu(bs, bp, cu);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_received_tcn(struct bstp_state *bs, struct bstp_port *bp,
|
|
|
|
struct bstp_tcn_unit *tcn)
|
|
|
|
{
|
|
|
|
bp->bp_rcvdtcn = 1;
|
|
|
|
bstp_update_tc(bp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_received_bpdu(struct bstp_state *bs, struct bstp_port *bp,
|
|
|
|
struct bstp_config_unit *cu)
|
|
|
|
{
|
|
|
|
int type;
|
|
|
|
|
|
|
|
BSTP_LOCK_ASSERT(bs);
|
|
|
|
|
|
|
|
/* We need to have transitioned to INFO_MINE before proceeding */
|
|
|
|
switch (bp->bp_infois) {
|
|
|
|
case BSTP_INFO_DISABLED:
|
|
|
|
case BSTP_INFO_AGED:
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
type = bstp_pdu_rcvtype(bp, cu);
|
|
|
|
|
|
|
|
switch (type) {
|
|
|
|
case BSTP_PDU_SUPERIOR:
|
|
|
|
bs->bs_allsynced = 0;
|
|
|
|
bp->bp_agreed = 0;
|
|
|
|
bp->bp_proposing = 0;
|
|
|
|
|
|
|
|
if (cu->cu_proposal && cu->cu_forwarding == 0)
|
|
|
|
bp->bp_proposed = 1;
|
|
|
|
if (cu->cu_topology_change)
|
|
|
|
bp->bp_rcvdtc = 1;
|
|
|
|
if (cu->cu_topology_change_ack)
|
|
|
|
bp->bp_rcvdtca = 1;
|
|
|
|
|
|
|
|
if (bp->bp_agree &&
|
|
|
|
!bstp_pdu_bettersame(bp, BSTP_INFO_RECIEVED))
|
|
|
|
bp->bp_agree = 0;
|
|
|
|
|
|
|
|
/* copy the received priority and timers to the port */
|
|
|
|
bp->bp_port_pv = cu->cu_pv;
|
|
|
|
bp->bp_port_msg_age = cu->cu_message_age;
|
|
|
|
bp->bp_port_max_age = cu->cu_max_age;
|
|
|
|
bp->bp_port_fdelay = cu->cu_forward_delay;
|
|
|
|
bp->bp_port_htime =
|
|
|
|
(cu->cu_hello_time > BSTP_MIN_HELLO_TIME ?
|
|
|
|
cu->cu_hello_time : BSTP_MIN_HELLO_TIME);
|
|
|
|
|
|
|
|
/* set expiry for the new info */
|
|
|
|
bstp_set_timer_msgage(bp);
|
|
|
|
|
|
|
|
bp->bp_infois = BSTP_INFO_RECIEVED;
|
|
|
|
bstp_assign_roles(bs);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_PDU_REPEATED:
|
|
|
|
if (cu->cu_proposal && cu->cu_forwarding == 0)
|
|
|
|
bp->bp_proposed = 1;
|
|
|
|
if (cu->cu_topology_change)
|
|
|
|
bp->bp_rcvdtc = 1;
|
|
|
|
if (cu->cu_topology_change_ack)
|
|
|
|
bp->bp_rcvdtca = 1;
|
|
|
|
|
|
|
|
/* rearm the age timer */
|
|
|
|
bstp_set_timer_msgage(bp);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_PDU_INFERIOR:
|
|
|
|
if (cu->cu_learning) {
|
|
|
|
bp->bp_agreed = 1;
|
|
|
|
bp->bp_proposing = 0;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_PDU_INFERIORALT:
|
|
|
|
/*
|
|
|
|
* only point to point links are allowed fast
|
|
|
|
* transitions to forwarding.
|
|
|
|
*/
|
|
|
|
if (cu->cu_agree && bp->bp_p2p_link) {
|
|
|
|
bp->bp_agreed = 1;
|
|
|
|
bp->bp_proposing = 0;
|
|
|
|
} else
|
|
|
|
bp->bp_agreed = 0;
|
|
|
|
|
|
|
|
if (cu->cu_topology_change)
|
|
|
|
bp->bp_rcvdtc = 1;
|
|
|
|
if (cu->cu_topology_change_ack)
|
|
|
|
bp->bp_rcvdtca = 1;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_PDU_OTHER:
|
|
|
|
return; /* do nothing */
|
|
|
|
}
|
|
|
|
/* update the state machines with the new data */
|
|
|
|
bstp_update_state(bs, bp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
bstp_pdu_rcvtype(struct bstp_port *bp, struct bstp_config_unit *cu)
|
|
|
|
{
|
|
|
|
int type;
|
|
|
|
|
|
|
|
/* default return type */
|
|
|
|
type = BSTP_PDU_OTHER;
|
|
|
|
|
|
|
|
switch (cu->cu_role) {
|
|
|
|
case BSTP_ROLE_DESIGNATED:
|
|
|
|
if (bstp_info_superior(&bp->bp_port_pv, &cu->cu_pv))
|
|
|
|
/* bpdu priority is superior */
|
|
|
|
type = BSTP_PDU_SUPERIOR;
|
|
|
|
else if (bstp_info_cmp(&bp->bp_port_pv, &cu->cu_pv) ==
|
|
|
|
INFO_SAME) {
|
|
|
|
if (bp->bp_port_msg_age != cu->cu_message_age ||
|
|
|
|
bp->bp_port_max_age != cu->cu_max_age ||
|
|
|
|
bp->bp_port_fdelay != cu->cu_forward_delay ||
|
|
|
|
bp->bp_port_htime != cu->cu_hello_time)
|
|
|
|
/* bpdu priority is equal and timers differ */
|
|
|
|
type = BSTP_PDU_SUPERIOR;
|
|
|
|
else
|
|
|
|
/* bpdu is equal */
|
|
|
|
type = BSTP_PDU_REPEATED;
|
|
|
|
} else
|
|
|
|
/* bpdu priority is worse */
|
|
|
|
type = BSTP_PDU_INFERIOR;
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_ROLE_ROOT:
|
|
|
|
case BSTP_ROLE_ALTERNATE:
|
|
|
|
case BSTP_ROLE_BACKUP:
|
|
|
|
if (bstp_info_cmp(&bp->bp_port_pv, &cu->cu_pv) <= INFO_SAME)
|
|
|
|
/*
|
|
|
|
* not a designated port and priority is the same or
|
|
|
|
* worse
|
|
|
|
*/
|
|
|
|
type = BSTP_PDU_INFERIORALT;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return (type);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
bstp_pdu_bettersame(struct bstp_port *bp, int newinfo)
|
|
|
|
{
|
|
|
|
if (newinfo == BSTP_INFO_RECIEVED &&
|
|
|
|
bp->bp_infois == BSTP_INFO_RECIEVED &&
|
|
|
|
bstp_info_cmp(&bp->bp_port_pv, &bp->bp_msg_cu.cu_pv) >= INFO_SAME)
|
|
|
|
return (1);
|
|
|
|
|
|
|
|
if (newinfo == BSTP_INFO_MINE &&
|
|
|
|
bp->bp_infois == BSTP_INFO_MINE &&
|
|
|
|
bstp_info_cmp(&bp->bp_port_pv, &bp->bp_desg_pv) >= INFO_SAME)
|
|
|
|
return (1);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
bstp_info_cmp(struct bstp_pri_vector *pv,
|
|
|
|
struct bstp_pri_vector *cpv)
|
|
|
|
{
|
|
|
|
if (cpv->pv_root_id < pv->pv_root_id)
|
|
|
|
return (INFO_BETTER);
|
|
|
|
if (cpv->pv_root_id > pv->pv_root_id)
|
|
|
|
return (INFO_WORSE);
|
|
|
|
|
|
|
|
if (cpv->pv_cost < pv->pv_cost)
|
|
|
|
return (INFO_BETTER);
|
|
|
|
if (cpv->pv_cost > pv->pv_cost)
|
|
|
|
return (INFO_WORSE);
|
|
|
|
|
|
|
|
if (cpv->pv_dbridge_id < pv->pv_dbridge_id)
|
|
|
|
return (INFO_BETTER);
|
|
|
|
if (cpv->pv_dbridge_id > pv->pv_dbridge_id)
|
|
|
|
return (INFO_WORSE);
|
|
|
|
|
|
|
|
if (cpv->pv_dport_id < pv->pv_dport_id)
|
|
|
|
return (INFO_BETTER);
|
|
|
|
if (cpv->pv_dport_id > pv->pv_dport_id)
|
|
|
|
return (INFO_WORSE);
|
|
|
|
|
|
|
|
return (INFO_SAME);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This message priority vector is superior to the port priority vector and
|
|
|
|
* will replace it if, and only if, the message priority vector is better than
|
|
|
|
* the port priority vector, or the message has been transmitted from the same
|
|
|
|
* designated bridge and designated port as the port priority vector.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
bstp_info_superior(struct bstp_pri_vector *pv,
|
|
|
|
struct bstp_pri_vector *cpv)
|
|
|
|
{
|
|
|
|
if (bstp_info_cmp(pv, cpv) == INFO_BETTER ||
|
|
|
|
(bstp_same_bridgeid(pv->pv_dbridge_id, cpv->pv_dbridge_id) &&
|
|
|
|
(cpv->pv_dport_id & 0xfff) == (pv->pv_dport_id & 0xfff)))
|
|
|
|
return (1);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_assign_roles(struct bstp_state *bs)
|
|
|
|
{
|
|
|
|
struct bstp_port *bp, *rbp = NULL;
|
|
|
|
struct bstp_pri_vector pv;
|
|
|
|
|
|
|
|
/* default to our priority vector */
|
|
|
|
bs->bs_root_pv = bs->bs_bridge_pv;
|
|
|
|
bs->bs_root_msg_age = 0;
|
|
|
|
bs->bs_root_max_age = bs->bs_bridge_max_age;
|
|
|
|
bs->bs_root_fdelay = bs->bs_bridge_fdelay;
|
|
|
|
bs->bs_root_htime = bs->bs_bridge_htime;
|
|
|
|
bs->bs_root_port = NULL;
|
|
|
|
|
|
|
|
/* check if any recieved info supersedes us */
|
|
|
|
LIST_FOREACH(bp, &bs->bs_bplist, bp_next) {
|
|
|
|
if (bp->bp_infois != BSTP_INFO_RECIEVED)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
pv = bp->bp_port_pv;
|
|
|
|
pv.pv_cost += bp->bp_path_cost;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The root priority vector is the best of the set comprising
|
|
|
|
* the bridge priority vector plus all root path priority
|
|
|
|
* vectors whose bridge address is not equal to us.
|
|
|
|
*/
|
|
|
|
if (bstp_same_bridgeid(pv.pv_dbridge_id,
|
|
|
|
bs->bs_bridge_pv.pv_dbridge_id) == 0 &&
|
|
|
|
bstp_info_cmp(&bs->bs_root_pv, &pv) == INFO_BETTER) {
|
|
|
|
/* the port vector replaces the root */
|
|
|
|
bs->bs_root_pv = pv;
|
|
|
|
bs->bs_root_msg_age = bp->bp_port_msg_age +
|
|
|
|
BSTP_MESSAGE_AGE_INCR;
|
|
|
|
bs->bs_root_max_age = bp->bp_port_max_age;
|
|
|
|
bs->bs_root_fdelay = bp->bp_port_fdelay;
|
|
|
|
bs->bs_root_htime = bp->bp_port_htime;
|
|
|
|
rbp = bp;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
LIST_FOREACH(bp, &bs->bs_bplist, bp_next) {
|
|
|
|
/* calculate the port designated vector */
|
|
|
|
bp->bp_desg_pv.pv_root_id = bs->bs_root_pv.pv_root_id;
|
|
|
|
bp->bp_desg_pv.pv_cost = bs->bs_root_pv.pv_cost;
|
|
|
|
bp->bp_desg_pv.pv_dbridge_id = bs->bs_bridge_pv.pv_dbridge_id;
|
|
|
|
bp->bp_desg_pv.pv_dport_id = bp->bp_port_id;
|
|
|
|
bp->bp_desg_pv.pv_port_id = bp->bp_port_id;
|
|
|
|
|
|
|
|
/* calculate designated times */
|
|
|
|
bp->bp_desg_msg_age = bs->bs_root_msg_age;
|
|
|
|
bp->bp_desg_max_age = bs->bs_root_max_age;
|
|
|
|
bp->bp_desg_fdelay = bs->bs_root_fdelay;
|
|
|
|
bp->bp_desg_htime = bs->bs_bridge_htime;
|
|
|
|
|
|
|
|
|
|
|
|
switch (bp->bp_infois) {
|
|
|
|
case BSTP_INFO_DISABLED:
|
|
|
|
bstp_set_port_role(bp, BSTP_ROLE_DISABLED);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_INFO_AGED:
|
|
|
|
bstp_set_port_role(bp, BSTP_ROLE_DESIGNATED);
|
|
|
|
bstp_update_info(bp);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_INFO_MINE:
|
|
|
|
bstp_set_port_role(bp, BSTP_ROLE_DESIGNATED);
|
|
|
|
/* update the port info if stale */
|
|
|
|
if (bstp_info_cmp(&bp->bp_port_pv,
|
|
|
|
&bp->bp_desg_pv) != INFO_SAME ||
|
|
|
|
(rbp != NULL &&
|
|
|
|
(bp->bp_port_msg_age != rbp->bp_port_msg_age ||
|
|
|
|
bp->bp_port_max_age != rbp->bp_port_max_age ||
|
|
|
|
bp->bp_port_fdelay != rbp->bp_port_fdelay ||
|
|
|
|
bp->bp_port_htime != rbp->bp_port_htime)))
|
|
|
|
bstp_update_info(bp);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_INFO_RECIEVED:
|
|
|
|
if (bp == rbp) {
|
|
|
|
/*
|
|
|
|
* root priority is derived from this
|
|
|
|
* port, make it the root port.
|
|
|
|
*/
|
|
|
|
bstp_set_port_role(bp, BSTP_ROLE_ROOT);
|
|
|
|
bs->bs_root_port = bp;
|
|
|
|
} else if (bstp_info_cmp(&bp->bp_port_pv,
|
|
|
|
&bp->bp_desg_pv) == INFO_BETTER) {
|
|
|
|
/*
|
|
|
|
* the port priority is lower than the root
|
|
|
|
* port.
|
|
|
|
*/
|
|
|
|
bstp_set_port_role(bp, BSTP_ROLE_DESIGNATED);
|
|
|
|
bstp_update_info(bp);
|
|
|
|
} else {
|
|
|
|
if (bstp_same_bridgeid(
|
|
|
|
bp->bp_port_pv.pv_dbridge_id,
|
|
|
|
bs->bs_bridge_pv.pv_dbridge_id)) {
|
|
|
|
/*
|
|
|
|
* the designated bridge refers to
|
|
|
|
* another port on this bridge.
|
|
|
|
*/
|
|
|
|
bstp_set_port_role(bp,
|
|
|
|
BSTP_ROLE_BACKUP);
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* the port is an inferior path to the
|
|
|
|
* root bridge.
|
|
|
|
*/
|
|
|
|
bstp_set_port_role(bp,
|
|
|
|
BSTP_ROLE_ALTERNATE);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_update_state(struct bstp_state *bs, struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
struct bstp_port *bp2;
|
|
|
|
int synced;
|
|
|
|
|
|
|
|
BSTP_LOCK_ASSERT(bs);
|
|
|
|
|
|
|
|
/* check if all the ports have syncronised again */
|
|
|
|
if (!bs->bs_allsynced) {
|
|
|
|
synced = 1;
|
|
|
|
LIST_FOREACH(bp2, &bs->bs_bplist, bp_next) {
|
|
|
|
if (!(bp->bp_synced ||
|
|
|
|
bp->bp_role == BSTP_ROLE_ROOT)) {
|
|
|
|
synced = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
bs->bs_allsynced = synced;
|
|
|
|
}
|
|
|
|
|
|
|
|
bstp_update_roles(bs, bp);
|
|
|
|
bstp_update_tc(bp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_update_roles(struct bstp_state *bs, struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
switch (bp->bp_role) {
|
|
|
|
case BSTP_ROLE_DISABLED:
|
|
|
|
/* Clear any flags if set */
|
|
|
|
if (bp->bp_sync || !bp->bp_synced || bp->bp_reroot) {
|
|
|
|
bp->bp_sync = 0;
|
|
|
|
bp->bp_synced = 1;
|
|
|
|
bp->bp_reroot = 0;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_ROLE_ALTERNATE:
|
|
|
|
case BSTP_ROLE_BACKUP:
|
|
|
|
if ((bs->bs_allsynced && !bp->bp_agree) ||
|
|
|
|
(bp->bp_proposed && bp->bp_agree)) {
|
|
|
|
bp->bp_proposed = 0;
|
|
|
|
bp->bp_agree = 1;
|
|
|
|
bp->bp_flags |= BSTP_PORT_NEWINFO;
|
|
|
|
DPRINTF("%s -> ALTERNATE_AGREED\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bp->bp_proposed && !bp->bp_agree) {
|
|
|
|
bstp_set_all_sync(bs);
|
|
|
|
bp->bp_proposed = 0;
|
|
|
|
DPRINTF("%s -> ALTERNATE_PROPOSED\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Clear any flags if set */
|
|
|
|
if (bp->bp_sync || !bp->bp_synced || bp->bp_reroot) {
|
|
|
|
bp->bp_sync = 0;
|
|
|
|
bp->bp_synced = 1;
|
|
|
|
bp->bp_reroot = 0;
|
|
|
|
DPRINTF("%s -> ALTERNATE_PORT\n", bp->bp_ifp->if_xname);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_ROLE_ROOT:
|
|
|
|
if (bp->bp_state != BSTP_IFSTATE_FORWARDING && !bp->bp_reroot) {
|
|
|
|
bstp_set_all_reroot(bs);
|
|
|
|
DPRINTF("%s -> ROOT_REROOT\n", bp->bp_ifp->if_xname);
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((bs->bs_allsynced && !bp->bp_agree) ||
|
|
|
|
(bp->bp_proposed && bp->bp_agree)) {
|
|
|
|
bp->bp_proposed = 0;
|
|
|
|
bp->bp_sync = 0;
|
|
|
|
bp->bp_agree = 1;
|
|
|
|
bp->bp_flags |= BSTP_PORT_NEWINFO;
|
|
|
|
DPRINTF("%s -> ROOT_AGREED\n", bp->bp_ifp->if_xname);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bp->bp_proposed && !bp->bp_agree) {
|
|
|
|
bstp_set_all_sync(bs);
|
|
|
|
bp->bp_proposed = 0;
|
|
|
|
DPRINTF("%s -> ROOT_PROPOSED\n", bp->bp_ifp->if_xname);
|
|
|
|
}
|
|
|
|
|
2006-11-02 08:44:19 +00:00
|
|
|
if (bp->bp_state != BSTP_IFSTATE_FORWARDING &&
|
|
|
|
(bp->bp_forward_delay_timer.active == 0 ||
|
2006-11-01 09:07:47 +00:00
|
|
|
(bstp_rerooted(bs, bp) &&
|
|
|
|
bp->bp_recent_backup_timer.active == 0 &&
|
2006-11-02 08:44:19 +00:00
|
|
|
bp->bp_protover == BSTP_PROTO_RSTP))) {
|
2006-11-01 09:07:47 +00:00
|
|
|
switch (bp->bp_state) {
|
|
|
|
case BSTP_IFSTATE_DISCARDING:
|
|
|
|
bstp_set_port_state(bp, BSTP_IFSTATE_LEARNING);
|
|
|
|
break;
|
|
|
|
case BSTP_IFSTATE_LEARNING:
|
|
|
|
bstp_set_port_state(bp,
|
|
|
|
BSTP_IFSTATE_FORWARDING);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bp->bp_state == BSTP_IFSTATE_FORWARDING && bp->bp_reroot) {
|
|
|
|
bp->bp_reroot = 0;
|
|
|
|
DPRINTF("%s -> ROOT_REROOTED\n", bp->bp_ifp->if_xname);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_ROLE_DESIGNATED:
|
|
|
|
if (bp->bp_recent_root_timer.active == 0 && bp->bp_reroot) {
|
|
|
|
bp->bp_reroot = 0;
|
|
|
|
DPRINTF("%s -> DESIGNATED_RETIRED\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((bp->bp_state == BSTP_IFSTATE_DISCARDING &&
|
|
|
|
!bp->bp_synced) || (bp->bp_agreed && !bp->bp_synced) ||
|
|
|
|
(bp->bp_operedge && !bp->bp_synced) ||
|
|
|
|
(bp->bp_sync && bp->bp_synced)) {
|
|
|
|
bstp_timer_stop(&bp->bp_recent_root_timer);
|
|
|
|
bp->bp_synced = 1;
|
|
|
|
bp->bp_sync = 0;
|
|
|
|
DPRINTF("%s -> DESIGNATED_SYNCED\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bp->bp_state != BSTP_IFSTATE_FORWARDING &&
|
|
|
|
!bp->bp_agreed && !bp->bp_proposing &&
|
|
|
|
!bp->bp_operedge) {
|
|
|
|
bp->bp_proposing = 1;
|
|
|
|
bp->bp_flags |= BSTP_PORT_NEWINFO;
|
|
|
|
bstp_timer_start(&bp->bp_edge_delay_timer,
|
|
|
|
(bp->bp_p2p_link ? BSTP_DEFAULT_MIGRATE_DELAY :
|
|
|
|
bp->bp_desg_max_age));
|
|
|
|
DPRINTF("%s -> DESIGNATED_PROPOSE\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
}
|
|
|
|
|
2006-11-02 08:44:19 +00:00
|
|
|
if (bp->bp_state != BSTP_IFSTATE_FORWARDING &&
|
|
|
|
(bp->bp_forward_delay_timer.active == 0 || bp->bp_agreed ||
|
2006-11-01 09:07:47 +00:00
|
|
|
bp->bp_operedge) &&
|
|
|
|
(bp->bp_recent_root_timer.active == 0 || !bp->bp_reroot) &&
|
|
|
|
!bp->bp_sync) {
|
2006-11-02 08:44:19 +00:00
|
|
|
if (bp->bp_agreed)
|
|
|
|
DPRINTF("%s -> AGREED\n", bp->bp_ifp->if_xname);
|
2006-11-02 00:39:36 +00:00
|
|
|
/*
|
|
|
|
* If agreed|operedge then go straight to forwarding,
|
|
|
|
* otherwise follow discard -> learn -> forward.
|
|
|
|
*/
|
|
|
|
if (bp->bp_agreed || bp->bp_operedge ||
|
|
|
|
bp->bp_state == BSTP_IFSTATE_LEARNING) {
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_set_port_state(bp,
|
|
|
|
BSTP_IFSTATE_FORWARDING);
|
|
|
|
bp->bp_agreed = bp->bp_protover;
|
2006-11-02 00:39:36 +00:00
|
|
|
} else if (bp->bp_state == BSTP_IFSTATE_DISCARDING)
|
|
|
|
bstp_set_port_state(bp, BSTP_IFSTATE_LEARNING);
|
2006-11-01 09:07:47 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (((bp->bp_sync && !bp->bp_synced) ||
|
|
|
|
(bp->bp_reroot && bp->bp_recent_root_timer.active) ||
|
|
|
|
(bp->bp_flags & BSTP_PORT_DISPUTED)) && !bp->bp_operedge &&
|
|
|
|
bp->bp_state != BSTP_IFSTATE_DISCARDING) {
|
|
|
|
bstp_set_port_state(bp, BSTP_IFSTATE_DISCARDING);
|
|
|
|
bp->bp_flags &= ~BSTP_PORT_DISPUTED;
|
|
|
|
bstp_timer_start(&bp->bp_forward_delay_timer,
|
|
|
|
bp->bp_protover == BSTP_PROTO_RSTP ?
|
|
|
|
bp->bp_desg_htime : bp->bp_desg_fdelay);
|
|
|
|
DPRINTF("%s -> DESIGNATED_DISCARD\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bp->bp_flags & BSTP_PORT_NEWINFO)
|
|
|
|
bstp_transmit(bs, bp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_update_tc(struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
switch (bp->bp_tcstate) {
|
|
|
|
case BSTP_TCSTATE_ACTIVE:
|
|
|
|
if ((bp->bp_role != BSTP_ROLE_DESIGNATED &&
|
|
|
|
bp->bp_role != BSTP_ROLE_ROOT) || bp->bp_operedge)
|
|
|
|
bstp_set_port_tc(bp, BSTP_TCSTATE_LEARNING);
|
|
|
|
|
|
|
|
if (bp->bp_rcvdtcn)
|
|
|
|
bstp_set_port_tc(bp, BSTP_TCSTATE_TCN);
|
|
|
|
if (bp->bp_rcvdtc)
|
|
|
|
bstp_set_port_tc(bp, BSTP_TCSTATE_TC);
|
|
|
|
|
|
|
|
if (bp->bp_tc_prop && !bp->bp_operedge)
|
|
|
|
bstp_set_port_tc(bp, BSTP_TCSTATE_PROPAG);
|
|
|
|
|
|
|
|
if (bp->bp_rcvdtca)
|
|
|
|
bstp_set_port_tc(bp, BSTP_TCSTATE_ACK);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_TCSTATE_INACTIVE:
|
|
|
|
if ((bp->bp_state == BSTP_IFSTATE_LEARNING ||
|
|
|
|
bp->bp_state == BSTP_IFSTATE_FORWARDING) &&
|
|
|
|
bp->bp_fdbflush == 0)
|
|
|
|
bstp_set_port_tc(bp, BSTP_TCSTATE_LEARNING);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_TCSTATE_LEARNING:
|
|
|
|
if (bp->bp_rcvdtc || bp->bp_rcvdtcn || bp->bp_rcvdtca ||
|
|
|
|
bp->bp_tc_prop)
|
|
|
|
bstp_set_port_tc(bp, BSTP_TCSTATE_LEARNING);
|
|
|
|
else if (bp->bp_role != BSTP_ROLE_DESIGNATED &&
|
|
|
|
bp->bp_role != BSTP_ROLE_ROOT &&
|
|
|
|
bp->bp_state == BSTP_IFSTATE_DISCARDING)
|
|
|
|
bstp_set_port_tc(bp, BSTP_TCSTATE_INACTIVE);
|
|
|
|
|
|
|
|
if ((bp->bp_role == BSTP_ROLE_DESIGNATED ||
|
|
|
|
bp->bp_role == BSTP_ROLE_ROOT) &&
|
|
|
|
bp->bp_state == BSTP_IFSTATE_FORWARDING &&
|
|
|
|
!bp->bp_operedge)
|
|
|
|
bstp_set_port_tc(bp, BSTP_TCSTATE_DETECTED);
|
|
|
|
break;
|
|
|
|
|
|
|
|
/* these are transient states and go straight back to ACTIVE */
|
|
|
|
case BSTP_TCSTATE_DETECTED:
|
|
|
|
case BSTP_TCSTATE_TCN:
|
|
|
|
case BSTP_TCSTATE_TC:
|
|
|
|
case BSTP_TCSTATE_PROPAG:
|
|
|
|
case BSTP_TCSTATE_ACK:
|
|
|
|
DPRINTF("Invalid TC state for %s\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_update_info(struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
|
|
|
|
bp->bp_proposing = 0;
|
|
|
|
bp->bp_proposed = 0;
|
|
|
|
|
|
|
|
if (bp->bp_agreed && !bstp_pdu_bettersame(bp, BSTP_INFO_MINE))
|
|
|
|
bp->bp_agreed = 0;
|
|
|
|
|
|
|
|
if (bp->bp_synced && !bp->bp_agreed) {
|
|
|
|
bp->bp_synced = 0;
|
|
|
|
bs->bs_allsynced = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* copy the designated pv to the port */
|
|
|
|
bp->bp_port_pv = bp->bp_desg_pv;
|
|
|
|
bp->bp_port_msg_age = bp->bp_desg_msg_age;
|
|
|
|
bp->bp_port_max_age = bp->bp_desg_max_age;
|
|
|
|
bp->bp_port_fdelay = bp->bp_desg_fdelay;
|
|
|
|
bp->bp_port_htime = bp->bp_desg_htime;
|
|
|
|
bp->bp_infois = BSTP_INFO_MINE;
|
|
|
|
|
2006-11-03 03:34:04 +00:00
|
|
|
/* Set transmit flag but do not immediately send */
|
2006-11-01 09:07:47 +00:00
|
|
|
bp->bp_flags |= BSTP_PORT_NEWINFO;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* set tcprop on every port other than the caller */
|
|
|
|
static void
|
|
|
|
bstp_set_other_tcprop(struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
struct bstp_port *bp2;
|
|
|
|
|
|
|
|
BSTP_LOCK_ASSERT(bs);
|
|
|
|
|
|
|
|
LIST_FOREACH(bp2, &bs->bs_bplist, bp_next) {
|
|
|
|
if (bp2 == bp)
|
|
|
|
continue;
|
|
|
|
bp->bp_tc_prop = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_set_all_reroot(struct bstp_state *bs)
|
|
|
|
{
|
|
|
|
struct bstp_port *bp;
|
|
|
|
|
|
|
|
BSTP_LOCK_ASSERT(bs);
|
|
|
|
|
|
|
|
LIST_FOREACH(bp, &bs->bs_bplist, bp_next)
|
|
|
|
bp->bp_reroot = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_set_all_sync(struct bstp_state *bs)
|
|
|
|
{
|
|
|
|
struct bstp_port *bp;
|
|
|
|
|
|
|
|
BSTP_LOCK_ASSERT(bs);
|
|
|
|
|
|
|
|
LIST_FOREACH(bp, &bs->bs_bplist, bp_next) {
|
|
|
|
bp->bp_sync = 1;
|
|
|
|
bp->bp_synced = 0; /* Not explicit in spec */
|
|
|
|
}
|
|
|
|
|
|
|
|
bs->bs_allsynced = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_set_port_state(struct bstp_port *bp, int state)
|
|
|
|
{
|
|
|
|
if (bp->bp_state == state)
|
|
|
|
return;
|
|
|
|
|
|
|
|
bp->bp_state = state;
|
|
|
|
|
|
|
|
switch (bp->bp_state) {
|
|
|
|
case BSTP_IFSTATE_DISCARDING:
|
|
|
|
DPRINTF("state changed to DISCARDING on %s\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_IFSTATE_LEARNING:
|
|
|
|
DPRINTF("state changed to LEARNING on %s\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
|
|
|
|
bstp_timer_start(&bp->bp_forward_delay_timer,
|
|
|
|
bp->bp_protover == BSTP_PROTO_RSTP ?
|
|
|
|
bp->bp_desg_htime : bp->bp_desg_fdelay);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_IFSTATE_FORWARDING:
|
|
|
|
DPRINTF("state changed to FORWARDING on %s\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
|
|
|
|
bstp_timer_stop(&bp->bp_forward_delay_timer);
|
|
|
|
/* Record that we enabled forwarding */
|
|
|
|
bp->bp_forward_transitions++;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* notify the parent bridge */
|
|
|
|
taskqueue_enqueue(taskqueue_swi, &bp->bp_statetask);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_set_port_role(struct bstp_port *bp, int role)
|
|
|
|
{
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
|
|
|
|
if (bp->bp_role == role)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* perform pre-change tasks */
|
|
|
|
switch (bp->bp_role) {
|
|
|
|
case BSTP_ROLE_DISABLED:
|
|
|
|
bstp_timer_start(&bp->bp_forward_delay_timer,
|
|
|
|
bp->bp_desg_max_age);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_ROLE_BACKUP:
|
|
|
|
bstp_timer_start(&bp->bp_recent_backup_timer,
|
|
|
|
bp->bp_desg_htime * 2);
|
|
|
|
/* fall through */
|
|
|
|
case BSTP_ROLE_ALTERNATE:
|
|
|
|
bstp_timer_start(&bp->bp_forward_delay_timer,
|
|
|
|
bp->bp_desg_fdelay);
|
|
|
|
bp->bp_sync = 0;
|
|
|
|
bp->bp_synced = 1;
|
|
|
|
bp->bp_reroot = 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_ROLE_ROOT:
|
|
|
|
bstp_timer_start(&bp->bp_recent_root_timer,
|
|
|
|
BSTP_DEFAULT_FORWARD_DELAY);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
bp->bp_role = role;
|
|
|
|
/* clear values not carried between roles */
|
|
|
|
bp->bp_proposing = 0;
|
|
|
|
bs->bs_allsynced = 0;
|
|
|
|
|
|
|
|
/* initialise the new role */
|
|
|
|
switch (bp->bp_role) {
|
|
|
|
case BSTP_ROLE_DISABLED:
|
|
|
|
case BSTP_ROLE_ALTERNATE:
|
|
|
|
case BSTP_ROLE_BACKUP:
|
|
|
|
DPRINTF("%s role -> ALT/BACK/DISABLED\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
bstp_set_port_state(bp, BSTP_IFSTATE_DISCARDING);
|
|
|
|
bstp_timer_stop(&bp->bp_recent_root_timer);
|
|
|
|
bstp_timer_latch(&bp->bp_forward_delay_timer);
|
|
|
|
bp->bp_sync = 0;
|
|
|
|
bp->bp_synced = 1;
|
|
|
|
bp->bp_reroot = 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_ROLE_ROOT:
|
|
|
|
DPRINTF("%s role -> ROOT\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
bstp_set_port_state(bp, BSTP_IFSTATE_DISCARDING);
|
|
|
|
bstp_timer_latch(&bp->bp_recent_root_timer);
|
|
|
|
bp->bp_proposing = 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_ROLE_DESIGNATED:
|
|
|
|
DPRINTF("%s role -> DESIGNATED\n",
|
|
|
|
bp->bp_ifp->if_xname);
|
|
|
|
bstp_timer_start(&bp->bp_hello_timer,
|
|
|
|
bp->bp_desg_htime);
|
|
|
|
bp->bp_agree = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* let the TC state know that the role changed */
|
|
|
|
bstp_update_tc(bp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_set_port_proto(struct bstp_port *bp, int proto)
|
|
|
|
{
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
|
|
|
|
/* supported protocol versions */
|
|
|
|
switch (proto) {
|
|
|
|
case BSTP_PROTO_STP:
|
|
|
|
/* we can downgrade protocols only */
|
|
|
|
bstp_timer_stop(&bp->bp_migrate_delay_timer);
|
|
|
|
/* clear unsupported features */
|
|
|
|
bp->bp_operedge = 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_PROTO_RSTP:
|
|
|
|
bstp_timer_start(&bp->bp_migrate_delay_timer,
|
|
|
|
bs->bs_migration_delay);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
DPRINTF("Unsupported STP version %d\n", proto);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
bp->bp_protover = proto;
|
|
|
|
bp->bp_flags &= ~BSTP_PORT_CANMIGRATE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_set_port_tc(struct bstp_port *bp, int state)
|
|
|
|
{
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
|
|
|
|
bp->bp_tcstate = state;
|
|
|
|
|
|
|
|
/* initialise the new state */
|
|
|
|
switch (bp->bp_tcstate) {
|
|
|
|
case BSTP_TCSTATE_ACTIVE:
|
|
|
|
DPRINTF("%s -> TC_ACTIVE\n", bp->bp_ifp->if_xname);
|
|
|
|
/* nothing to do */
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_TCSTATE_INACTIVE:
|
|
|
|
bstp_timer_stop(&bp->bp_tc_timer);
|
|
|
|
/* flush routes on the parent bridge */
|
|
|
|
bp->bp_fdbflush = 1;
|
|
|
|
taskqueue_enqueue(taskqueue_swi, &bp->bp_rtagetask);
|
|
|
|
bp->bp_tc_ack = 0;
|
|
|
|
DPRINTF("%s -> TC_INACTIVE\n", bp->bp_ifp->if_xname);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_TCSTATE_LEARNING:
|
|
|
|
bp->bp_rcvdtc = 0;
|
|
|
|
bp->bp_rcvdtcn = 0;
|
|
|
|
bp->bp_rcvdtca = 0;
|
|
|
|
bp->bp_tc_prop = 0;
|
|
|
|
DPRINTF("%s -> TC_LEARNING\n", bp->bp_ifp->if_xname);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_TCSTATE_DETECTED:
|
|
|
|
bstp_set_timer_tc(bp);
|
|
|
|
bstp_set_other_tcprop(bp);
|
|
|
|
/* send out notification */
|
|
|
|
bp->bp_flags |= BSTP_PORT_NEWINFO;
|
|
|
|
bstp_transmit(bs, bp);
|
|
|
|
getmicrotime(&bs->bs_last_tc_time);
|
|
|
|
DPRINTF("%s -> TC_DETECTED\n", bp->bp_ifp->if_xname);
|
|
|
|
bp->bp_tcstate = BSTP_TCSTATE_ACTIVE; /* UCT */
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_TCSTATE_TCN:
|
|
|
|
bstp_set_timer_tc(bp);
|
|
|
|
DPRINTF("%s -> TC_TCN\n", bp->bp_ifp->if_xname);
|
|
|
|
/* fall through */
|
|
|
|
case BSTP_TCSTATE_TC:
|
|
|
|
bp->bp_rcvdtc = 0;
|
|
|
|
bp->bp_rcvdtcn = 0;
|
|
|
|
if (bp->bp_role == BSTP_ROLE_DESIGNATED)
|
|
|
|
bp->bp_tc_ack = 1;
|
|
|
|
|
|
|
|
bstp_set_other_tcprop(bp);
|
|
|
|
DPRINTF("%s -> TC_TC\n", bp->bp_ifp->if_xname);
|
|
|
|
bp->bp_tcstate = BSTP_TCSTATE_ACTIVE; /* UCT */
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_TCSTATE_PROPAG:
|
|
|
|
/* flush routes on the parent bridge */
|
|
|
|
bp->bp_fdbflush = 1;
|
|
|
|
taskqueue_enqueue(taskqueue_swi, &bp->bp_rtagetask);
|
|
|
|
bp->bp_tc_prop = 0;
|
|
|
|
bstp_set_timer_tc(bp);
|
|
|
|
DPRINTF("%s -> TC_PROPAG\n", bp->bp_ifp->if_xname);
|
|
|
|
bp->bp_tcstate = BSTP_TCSTATE_ACTIVE; /* UCT */
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_TCSTATE_ACK:
|
|
|
|
bstp_timer_stop(&bp->bp_tc_timer);
|
|
|
|
bp->bp_rcvdtca = 0;
|
|
|
|
DPRINTF("%s -> TC_ACK\n", bp->bp_ifp->if_xname);
|
|
|
|
bp->bp_tcstate = BSTP_TCSTATE_ACTIVE; /* UCT */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_set_timer_tc(struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
|
|
|
|
if (bp->bp_tc_timer.active)
|
|
|
|
return;
|
|
|
|
|
|
|
|
switch (bp->bp_protover) {
|
|
|
|
case BSTP_PROTO_RSTP:
|
|
|
|
bstp_timer_start(&bp->bp_tc_timer,
|
|
|
|
bp->bp_desg_htime + BSTP_TICK_VAL);
|
|
|
|
bp->bp_flags |= BSTP_PORT_NEWINFO;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_PROTO_STP:
|
|
|
|
bstp_timer_start(&bp->bp_tc_timer,
|
|
|
|
bs->bs_root_max_age + bs->bs_root_fdelay);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_set_timer_msgage(struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
if (bp->bp_port_msg_age + BSTP_MESSAGE_AGE_INCR <=
|
|
|
|
bp->bp_port_max_age) {
|
|
|
|
bstp_timer_start(&bp->bp_message_age_timer,
|
|
|
|
bp->bp_port_htime * 3);
|
|
|
|
} else
|
|
|
|
/* expires immediately */
|
|
|
|
bstp_timer_start(&bp->bp_message_age_timer, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
bstp_rerooted(struct bstp_state *bs, struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
struct bstp_port *bp2;
|
|
|
|
int rr_set = 0;
|
|
|
|
|
|
|
|
LIST_FOREACH(bp2, &bs->bs_bplist, bp_next) {
|
|
|
|
if (bp2 == bp)
|
|
|
|
continue;
|
|
|
|
if (bp2->bp_recent_root_timer.active) {
|
|
|
|
rr_set = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return (!rr_set);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
bstp_set_htime(struct bstp_state *bs, int t)
|
|
|
|
{
|
|
|
|
/* convert seconds to ticks */
|
|
|
|
t *= BSTP_TICK_VAL;
|
|
|
|
|
|
|
|
/* value can only be changed in leagacy stp mode */
|
|
|
|
if (bs->bs_protover != BSTP_PROTO_STP)
|
|
|
|
return (EPERM);
|
|
|
|
|
|
|
|
if (t < BSTP_MIN_HELLO_TIME || t > BSTP_MAX_HELLO_TIME)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
bs->bs_bridge_htime = t;
|
|
|
|
bstp_reinit(bs);
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
bstp_set_fdelay(struct bstp_state *bs, int t)
|
|
|
|
{
|
|
|
|
/* convert seconds to ticks */
|
|
|
|
t *= BSTP_TICK_VAL;
|
|
|
|
|
|
|
|
if (t < BSTP_MIN_FORWARD_DELAY || t > BSTP_MAX_FORWARD_DELAY)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
bs->bs_bridge_fdelay = t;
|
|
|
|
bstp_reinit(bs);
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
bstp_set_maxage(struct bstp_state *bs, int t)
|
|
|
|
{
|
|
|
|
/* convert seconds to ticks */
|
|
|
|
t *= BSTP_TICK_VAL;
|
|
|
|
|
|
|
|
if (t < BSTP_MIN_MAX_AGE || t > BSTP_MAX_MAX_AGE)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
bs->bs_bridge_max_age = t;
|
|
|
|
bstp_reinit(bs);
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
bstp_set_holdcount(struct bstp_state *bs, int count)
|
|
|
|
{
|
|
|
|
struct bstp_port *bp;
|
|
|
|
|
|
|
|
if (count < BSTP_MIN_HOLD_COUNT ||
|
|
|
|
count > BSTP_MAX_HOLD_COUNT)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
bs->bs_txholdcount = count;
|
|
|
|
LIST_FOREACH(bp, &bs->bs_bplist, bp_next)
|
|
|
|
bp->bp_txcount = 0;
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
bstp_set_protocol(struct bstp_state *bs, int proto)
|
|
|
|
{
|
|
|
|
struct bstp_port *bp;
|
|
|
|
|
|
|
|
switch (proto) {
|
|
|
|
/* Supported protocol versions */
|
|
|
|
case BSTP_PROTO_STP:
|
|
|
|
case BSTP_PROTO_RSTP:
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
return (EINVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
bs->bs_protover = proto;
|
|
|
|
bs->bs_bridge_htime = BSTP_DEFAULT_HELLO_TIME;
|
|
|
|
LIST_FOREACH(bp, &bs->bs_bplist, bp_next) {
|
|
|
|
/* reinit state */
|
|
|
|
bp->bp_infois = BSTP_INFO_DISABLED;
|
|
|
|
bp->bp_txcount = 0;
|
|
|
|
bstp_set_port_proto(bp, bs->bs_protover);
|
|
|
|
bstp_set_port_role(bp, BSTP_ROLE_DISABLED);
|
|
|
|
bstp_set_port_tc(bp, BSTP_TCSTATE_INACTIVE);
|
|
|
|
bstp_timer_stop(&bp->bp_recent_backup_timer);
|
|
|
|
}
|
|
|
|
bstp_reinit(bs);
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
bstp_set_priority(struct bstp_state *bs, int pri)
|
|
|
|
{
|
|
|
|
if (pri < 0 || pri > BSTP_MAX_PRIORITY)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
/* Limit to steps of 4096 */
|
|
|
|
pri -= pri % 4096;
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
bs->bs_bridge_priority = pri;
|
|
|
|
bstp_reinit(bs);
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
bstp_set_port_priority(struct bstp_port *bp, int pri)
|
|
|
|
{
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
|
|
|
|
if (pri < 0 || pri > BSTP_MAX_PORT_PRIORITY)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
/* Limit to steps of 16 */
|
|
|
|
pri -= pri % 16;
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
bp->bp_priority = pri;
|
|
|
|
bstp_reinit(bs);
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
bstp_set_path_cost(struct bstp_port *bp, uint32_t path_cost)
|
|
|
|
{
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
|
|
|
|
if (path_cost > BSTP_MAX_PATH_COST)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
|
|
|
|
if (path_cost == 0) { /* use auto */
|
|
|
|
bp->bp_flags &= ~BSTP_PORT_ADMCOST;
|
|
|
|
bp->bp_path_cost = bstp_calc_path_cost(bp);
|
|
|
|
} else {
|
|
|
|
bp->bp_path_cost = path_cost;
|
|
|
|
bp->bp_flags |= BSTP_PORT_ADMCOST;
|
|
|
|
}
|
|
|
|
bstp_reinit(bs);
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
bstp_set_edge(struct bstp_port *bp, int set)
|
|
|
|
{
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
bp->bp_operedge = set;
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
bstp_set_autoedge(struct bstp_port *bp, int set)
|
|
|
|
{
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
if (set) {
|
|
|
|
bp->bp_flags |= BSTP_PORT_AUTOEDGE;
|
|
|
|
/* we may be able to transition straight to edge */
|
|
|
|
if (bp->bp_edge_delay_timer.active == 0)
|
|
|
|
bstp_edge_delay_expiry(bs, bp);
|
|
|
|
} else
|
|
|
|
bp->bp_flags &= ~BSTP_PORT_AUTOEDGE;
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Calculate the path cost according to the link speed.
|
|
|
|
*/
|
|
|
|
static uint32_t
|
|
|
|
bstp_calc_path_cost(struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
struct ifnet *ifp = bp->bp_ifp;
|
|
|
|
uint32_t path_cost;
|
|
|
|
|
|
|
|
/* If the priority has been manually set then retain the value */
|
|
|
|
if (bp->bp_flags & BSTP_PORT_ADMCOST)
|
|
|
|
return bp->bp_path_cost;
|
|
|
|
|
|
|
|
if (ifp->if_baudrate < 1000)
|
|
|
|
return (BSTP_DEFAULT_PATH_COST);
|
|
|
|
|
|
|
|
/* formula from section 17.14, IEEE Std 802.1D-2004 */
|
|
|
|
path_cost = 20000000000 / (ifp->if_baudrate / 1000);
|
|
|
|
|
|
|
|
if (path_cost > BSTP_MAX_PATH_COST)
|
|
|
|
path_cost = BSTP_MAX_PATH_COST;
|
|
|
|
|
|
|
|
/* STP compat mode only uses 16 bits of the 32 */
|
|
|
|
if (bp->bp_protover == BSTP_PROTO_STP && path_cost > 65535)
|
|
|
|
path_cost = 65535;
|
|
|
|
|
|
|
|
return (path_cost);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Notify the bridge that a port state has changed, we need to do this from a
|
|
|
|
* taskqueue to avoid a LOR.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
bstp_notify_state(void *arg, int pending)
|
|
|
|
{
|
|
|
|
struct bstp_port *bp = (struct bstp_port *)arg;
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
|
|
|
|
if (bp->bp_active == 1 && bs->bs_state_cb != NULL)
|
|
|
|
(*bs->bs_state_cb)(bp->bp_ifp, bp->bp_state);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Flush the routes on the bridge port, we need to do this from a
|
|
|
|
* taskqueue to avoid a LOR.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
bstp_notify_rtage(void *arg, int pending)
|
|
|
|
{
|
|
|
|
struct bstp_port *bp = (struct bstp_port *)arg;
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
int age = 0;
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
switch (bp->bp_protover) {
|
|
|
|
case BSTP_PROTO_STP:
|
|
|
|
/* convert to seconds */
|
|
|
|
age = bp->bp_desg_fdelay / BSTP_TICK_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case BSTP_PROTO_RSTP:
|
|
|
|
age = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
|
|
|
|
if (bp->bp_active == 1 && bs->bs_rtage_cb != NULL)
|
|
|
|
(*bs->bs_rtage_cb)(bp->bp_ifp, age);
|
|
|
|
|
|
|
|
/* flush is complete */
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
bp->bp_fdbflush = 0;
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
bstp_linkstate(struct ifnet *ifp, int state)
|
|
|
|
{
|
|
|
|
struct bstp_state *bs;
|
|
|
|
struct bstp_port *bp;
|
|
|
|
|
|
|
|
/* search for the stp port */
|
|
|
|
mtx_lock(&bstp_list_mtx);
|
|
|
|
LIST_FOREACH(bs, &bstp_list, bs_list) {
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
LIST_FOREACH(bp, &bs->bs_bplist, bp_next) {
|
|
|
|
if (bp->bp_ifp == ifp) {
|
|
|
|
bstp_ifupdstatus(bs, bp);
|
2006-11-09 22:50:49 +00:00
|
|
|
bstp_update_state(bs, bp);
|
2006-11-01 09:07:47 +00:00
|
|
|
/* it only exists once so return */
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
mtx_unlock(&bstp_list_mtx);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
}
|
|
|
|
mtx_unlock(&bstp_list_mtx);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_ifupdstatus(struct bstp_state *bs, struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
struct ifnet *ifp = bp->bp_ifp;
|
|
|
|
struct ifmediareq ifmr;
|
|
|
|
int error = 0;
|
|
|
|
|
|
|
|
BSTP_LOCK_ASSERT(bs);
|
|
|
|
|
|
|
|
bzero((char *)&ifmr, sizeof(ifmr));
|
|
|
|
error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr);
|
|
|
|
|
|
|
|
if ((error == 0) && (ifp->if_flags & IFF_UP)) {
|
|
|
|
if (ifmr.ifm_status & IFM_ACTIVE) {
|
|
|
|
/* A full-duplex link is assumed to be point to point */
|
|
|
|
bp->bp_p2p_link = ifmr.ifm_active & IFM_FDX ? 1 : 0;
|
|
|
|
|
|
|
|
if (bp->bp_role == BSTP_ROLE_DISABLED)
|
|
|
|
bstp_enable_port(bs, bp);
|
|
|
|
} else {
|
|
|
|
if (bp->bp_role != BSTP_ROLE_DISABLED)
|
|
|
|
bstp_disable_port(bs, bp);
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bp->bp_infois != BSTP_INFO_DISABLED)
|
|
|
|
bstp_disable_port(bs, bp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_enable_port(struct bstp_state *bs, struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
bp->bp_infois = BSTP_INFO_AGED;
|
|
|
|
bstp_assign_roles(bs);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_disable_port(struct bstp_state *bs, struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
bp->bp_infois = BSTP_INFO_DISABLED;
|
|
|
|
bstp_assign_roles(bs);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
bstp_tick(void *arg)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-11-01 09:07:47 +00:00
|
|
|
struct bstp_state *bs = arg;
|
|
|
|
struct bstp_port *bp;
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-07-26 10:43:02 +00:00
|
|
|
BSTP_LOCK_ASSERT(bs);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-09 22:50:49 +00:00
|
|
|
if (bs->bs_running == 0)
|
|
|
|
return;
|
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
/* slow timer to catch missed link events */
|
|
|
|
if (bstp_timer_expired(&bs->bs_link_timer)) {
|
|
|
|
LIST_FOREACH(bp, &bs->bs_bplist, bp_next)
|
|
|
|
bstp_ifupdstatus(bs, bp);
|
|
|
|
bstp_timer_start(&bs->bs_link_timer, BSTP_LINK_TIMER);
|
|
|
|
}
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
LIST_FOREACH(bp, &bs->bs_bplist, bp_next) {
|
|
|
|
/* no events need to happen for these */
|
|
|
|
bstp_timer_expired(&bp->bp_tc_timer);
|
|
|
|
bstp_timer_expired(&bp->bp_recent_root_timer);
|
|
|
|
bstp_timer_expired(&bp->bp_forward_delay_timer);
|
|
|
|
bstp_timer_expired(&bp->bp_recent_backup_timer);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
if (bstp_timer_expired(&bp->bp_hello_timer))
|
|
|
|
bstp_hello_timer_expiry(bs, bp);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
if (bstp_timer_expired(&bp->bp_message_age_timer))
|
|
|
|
bstp_message_age_expiry(bs, bp);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
if (bstp_timer_expired(&bp->bp_migrate_delay_timer))
|
|
|
|
bstp_migrate_delay_expiry(bs, bp);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
if (bstp_timer_expired(&bp->bp_edge_delay_timer))
|
|
|
|
bstp_edge_delay_expiry(bs, bp);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
/* update the various state machines for the port */
|
|
|
|
bstp_update_state(bs, bp);
|
|
|
|
|
|
|
|
if (bp->bp_txcount > 0)
|
|
|
|
bp->bp_txcount--;
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
2006-11-01 09:07:47 +00:00
|
|
|
|
|
|
|
callout_reset(&bs->bs_bstpcallout, hz, bstp_tick, bs);
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
|
2005-10-14 10:38:12 +00:00
|
|
|
static void
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_timer_start(struct bstp_timer *t, uint16_t v)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-11-01 09:07:47 +00:00
|
|
|
t->value = v;
|
|
|
|
t->active = 1;
|
|
|
|
t->latched = 0;
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
|
2005-10-14 10:38:12 +00:00
|
|
|
static void
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_timer_stop(struct bstp_timer *t)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-11-01 09:07:47 +00:00
|
|
|
t->value = 0;
|
|
|
|
t->active = 0;
|
|
|
|
t->latched = 0;
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
|
2005-10-14 10:38:12 +00:00
|
|
|
static void
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_timer_latch(struct bstp_timer *t)
|
|
|
|
{
|
|
|
|
t->latched = 1;
|
|
|
|
t->active = 1;
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
|
2005-10-14 10:38:12 +00:00
|
|
|
static int
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_timer_expired(struct bstp_timer *t)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-11-01 09:07:47 +00:00
|
|
|
if (t->active == 0 || t->latched)
|
|
|
|
return (0);
|
|
|
|
t->value -= BSTP_TICK_VAL;
|
|
|
|
if (t->value <= 0) {
|
|
|
|
bstp_timer_stop(t);
|
|
|
|
return (1);
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2005-10-14 10:38:12 +00:00
|
|
|
static void
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_hello_timer_expiry(struct bstp_state *bs, struct bstp_port *bp)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-11-01 09:07:47 +00:00
|
|
|
if ((bp->bp_flags & BSTP_PORT_NEWINFO) ||
|
|
|
|
bp->bp_role == BSTP_ROLE_DESIGNATED ||
|
|
|
|
(bp->bp_role == BSTP_ROLE_ROOT &&
|
|
|
|
bp->bp_tc_timer.active == 1)) {
|
|
|
|
bstp_timer_start(&bp->bp_hello_timer, bp->bp_desg_htime);
|
|
|
|
bp->bp_flags |= BSTP_PORT_NEWINFO;
|
|
|
|
bstp_transmit(bs, bp);
|
|
|
|
}
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
|
2005-10-14 10:38:12 +00:00
|
|
|
static void
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_message_age_expiry(struct bstp_state *bs, struct bstp_port *bp)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-11-01 09:07:47 +00:00
|
|
|
if (bp->bp_infois == BSTP_INFO_RECIEVED) {
|
|
|
|
bp->bp_infois = BSTP_INFO_AGED;
|
|
|
|
bstp_assign_roles(bs);
|
|
|
|
DPRINTF("aged info on %s\n", bp->bp_ifp->if_xname);
|
|
|
|
}
|
|
|
|
}
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
static void
|
|
|
|
bstp_migrate_delay_expiry(struct bstp_state *bs, struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
bp->bp_flags |= BSTP_PORT_CANMIGRATE;
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
|
2005-10-14 10:38:12 +00:00
|
|
|
static void
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_edge_delay_expiry(struct bstp_state *bs, struct bstp_port *bp)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-11-01 09:07:47 +00:00
|
|
|
if ((bp->bp_flags & BSTP_PORT_AUTOEDGE) &&
|
|
|
|
bp->bp_protover == BSTP_PROTO_RSTP && bp->bp_proposing &&
|
2006-11-09 22:50:49 +00:00
|
|
|
bp->bp_role == BSTP_ROLE_DESIGNATED) {
|
2006-11-01 09:07:47 +00:00
|
|
|
bp->bp_operedge = 1;
|
2006-11-09 22:50:49 +00:00
|
|
|
DPRINTF("%s -> edge port\n", bp->bp_ifp->if_xname);
|
|
|
|
}
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
|
2006-02-28 00:13:24 +00:00
|
|
|
static int
|
|
|
|
bstp_addr_cmp(const uint8_t *a, const uint8_t *b)
|
|
|
|
{
|
|
|
|
int i, d;
|
|
|
|
|
|
|
|
for (i = 0, d = 0; i < ETHER_ADDR_LEN && d == 0; i++) {
|
|
|
|
d = ((int)a[i]) - ((int)b[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (d);
|
|
|
|
}
|
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
/*
|
|
|
|
* compare the bridge address component of the bridgeid
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
bstp_same_bridgeid(uint64_t id1, uint64_t id2)
|
|
|
|
{
|
|
|
|
u_char addr1[ETHER_ADDR_LEN];
|
|
|
|
u_char addr2[ETHER_ADDR_LEN];
|
|
|
|
|
|
|
|
PV2ADDR(id1, addr1);
|
|
|
|
PV2ADDR(id2, addr2);
|
|
|
|
|
|
|
|
if (bstp_addr_cmp(addr1, addr2) == 0)
|
|
|
|
return (1);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2005-06-05 02:59:26 +00:00
|
|
|
void
|
2006-07-26 10:43:02 +00:00
|
|
|
bstp_reinit(struct bstp_state *bs)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-11-09 22:50:49 +00:00
|
|
|
struct bstp_port *bp;
|
|
|
|
struct ifnet *ifp, *mif;
|
2006-02-28 00:13:24 +00:00
|
|
|
u_char *e_addr;
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
BSTP_LOCK_ASSERT(bs);
|
2005-08-15 02:54:29 +00:00
|
|
|
|
2006-11-09 22:50:49 +00:00
|
|
|
if (LIST_EMPTY(&bs->bs_bplist)) {
|
2006-11-19 23:08:35 +00:00
|
|
|
callout_stop(&bs->bs_bstpcallout);
|
2006-11-09 22:50:49 +00:00
|
|
|
return;
|
|
|
|
}
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-09 22:50:49 +00:00
|
|
|
mif = NULL;
|
|
|
|
/*
|
|
|
|
* Search through the Ethernet adapters and find the one with the
|
|
|
|
* lowest value. The adapter which we take the MAC address from does
|
|
|
|
* not need to be part of the bridge, it just needs to be a unique
|
|
|
|
* value. It is not possible for mif to be null, at this point we have
|
|
|
|
* at least one stp port and hence at least one NIC.
|
|
|
|
*/
|
|
|
|
IFNET_RLOCK();
|
|
|
|
TAILQ_FOREACH(ifp, &ifnet, if_link) {
|
|
|
|
if (ifp->if_type != IFT_ETHER)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (mif == NULL) {
|
|
|
|
mif = ifp;
|
2005-06-05 02:59:26 +00:00
|
|
|
continue;
|
|
|
|
}
|
2006-11-09 22:50:49 +00:00
|
|
|
if (bstp_addr_cmp(IF_LLADDR(ifp), IF_LLADDR(mif)) < 0) {
|
|
|
|
mif = ifp;
|
2005-06-05 02:59:26 +00:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
2006-11-09 22:50:49 +00:00
|
|
|
IFNET_RUNLOCK();
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-09 22:50:49 +00:00
|
|
|
e_addr = IF_LLADDR(mif);
|
2006-11-01 09:07:47 +00:00
|
|
|
bs->bs_bridge_pv.pv_dbridge_id =
|
2006-07-26 10:43:02 +00:00
|
|
|
(((uint64_t)bs->bs_bridge_priority) << 48) |
|
2006-02-28 00:13:24 +00:00
|
|
|
(((uint64_t)e_addr[0]) << 40) |
|
|
|
|
(((uint64_t)e_addr[1]) << 32) |
|
|
|
|
(((uint64_t)e_addr[2]) << 24) |
|
|
|
|
(((uint64_t)e_addr[3]) << 16) |
|
|
|
|
(((uint64_t)e_addr[4]) << 8) |
|
|
|
|
(((uint64_t)e_addr[5]));
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
bs->bs_bridge_pv.pv_root_id = bs->bs_bridge_pv.pv_dbridge_id;
|
|
|
|
bs->bs_bridge_pv.pv_cost = 0;
|
|
|
|
bs->bs_bridge_pv.pv_dport_id = 0;
|
|
|
|
bs->bs_bridge_pv.pv_port_id = 0;
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-09 22:50:49 +00:00
|
|
|
if (bs->bs_running && callout_pending(&bs->bs_bstpcallout) == 0)
|
2006-11-01 09:07:47 +00:00
|
|
|
callout_reset(&bs->bs_bstpcallout, hz, bstp_tick, bs);
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-09 22:50:49 +00:00
|
|
|
LIST_FOREACH(bp, &bs->bs_bplist, bp_next) {
|
|
|
|
bp->bp_port_id = (bp->bp_priority << 8) |
|
|
|
|
(bp->bp_ifp->if_index & 0xfff);
|
2006-07-26 10:43:02 +00:00
|
|
|
bstp_ifupdstatus(bs, bp);
|
2006-11-09 22:50:49 +00:00
|
|
|
}
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_assign_roles(bs);
|
|
|
|
bstp_timer_start(&bs->bs_link_timer, BSTP_LINK_TIMER);
|
2006-07-26 10:43:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
bstp_modevent(module_t mod, int type, void *data)
|
|
|
|
{
|
|
|
|
switch (type) {
|
|
|
|
case MOD_LOAD:
|
|
|
|
mtx_init(&bstp_list_mtx, "bridgestp list", NULL, MTX_DEF);
|
|
|
|
LIST_INIT(&bstp_list);
|
|
|
|
bstp_linkstate_p = bstp_linkstate;
|
|
|
|
break;
|
|
|
|
case MOD_UNLOAD:
|
|
|
|
mtx_destroy(&bstp_list_mtx);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return (EOPNOTSUPP);
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
2006-07-26 10:43:02 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static moduledata_t bstp_mod = {
|
|
|
|
"bridgestp",
|
|
|
|
bstp_modevent,
|
|
|
|
0
|
|
|
|
};
|
|
|
|
|
|
|
|
DECLARE_MODULE(bridgestp, bstp_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
|
2006-08-12 20:30:58 +00:00
|
|
|
MODULE_VERSION(bridgestp, 1);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-07-26 10:43:02 +00:00
|
|
|
void
|
2006-11-01 09:07:47 +00:00
|
|
|
bstp_attach(struct bstp_state *bs, bstp_state_cb_t state_callback,
|
|
|
|
bstp_rtage_cb_t rtage_callback)
|
2006-07-26 10:43:02 +00:00
|
|
|
{
|
|
|
|
BSTP_LOCK_INIT(bs);
|
|
|
|
callout_init_mtx(&bs->bs_bstpcallout, &bs->bs_mtx, 0);
|
|
|
|
LIST_INIT(&bs->bs_bplist);
|
|
|
|
|
|
|
|
bs->bs_bridge_max_age = BSTP_DEFAULT_MAX_AGE;
|
2006-11-01 09:07:47 +00:00
|
|
|
bs->bs_bridge_htime = BSTP_DEFAULT_HELLO_TIME;
|
|
|
|
bs->bs_bridge_fdelay = BSTP_DEFAULT_FORWARD_DELAY;
|
2006-07-26 10:43:02 +00:00
|
|
|
bs->bs_bridge_priority = BSTP_DEFAULT_BRIDGE_PRIORITY;
|
|
|
|
bs->bs_hold_time = BSTP_DEFAULT_HOLD_TIME;
|
2006-11-01 09:07:47 +00:00
|
|
|
bs->bs_migration_delay = BSTP_DEFAULT_MIGRATE_DELAY;
|
|
|
|
bs->bs_txholdcount = BSTP_DEFAULT_HOLD_COUNT;
|
|
|
|
bs->bs_protover = BSTP_PROTO_RSTP;
|
2006-08-02 02:47:27 +00:00
|
|
|
bs->bs_state_cb = state_callback;
|
2006-11-01 09:07:47 +00:00
|
|
|
bs->bs_rtage_cb = rtage_callback;
|
|
|
|
|
|
|
|
getmicrotime(&bs->bs_last_tc_time);
|
2006-07-26 10:43:02 +00:00
|
|
|
|
|
|
|
mtx_lock(&bstp_list_mtx);
|
|
|
|
LIST_INSERT_HEAD(&bstp_list, bs, bs_list);
|
|
|
|
mtx_unlock(&bstp_list_mtx);
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
2006-07-26 10:43:02 +00:00
|
|
|
bstp_detach(struct bstp_state *bs)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-07-26 10:43:02 +00:00
|
|
|
KASSERT(LIST_EMPTY(&bs->bs_bplist), ("bstp still active"));
|
|
|
|
|
|
|
|
mtx_lock(&bstp_list_mtx);
|
|
|
|
LIST_REMOVE(bs, bs_list);
|
|
|
|
mtx_unlock(&bstp_list_mtx);
|
2006-11-09 22:50:49 +00:00
|
|
|
callout_drain(&bs->bs_bstpcallout);
|
2006-07-26 10:43:02 +00:00
|
|
|
BSTP_LOCK_DESTROY(bs);
|
|
|
|
}
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-07-26 10:43:02 +00:00
|
|
|
void
|
|
|
|
bstp_init(struct bstp_state *bs)
|
|
|
|
{
|
2006-11-01 09:07:47 +00:00
|
|
|
BSTP_LOCK(bs);
|
2006-07-26 10:43:02 +00:00
|
|
|
callout_reset(&bs->bs_bstpcallout, hz, bstp_tick, bs);
|
2006-11-09 22:50:49 +00:00
|
|
|
bs->bs_running = 1;
|
2006-07-26 10:43:02 +00:00
|
|
|
bstp_reinit(bs);
|
2006-11-01 09:07:47 +00:00
|
|
|
BSTP_UNLOCK(bs);
|
2006-07-26 10:43:02 +00:00
|
|
|
}
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-07-26 10:43:02 +00:00
|
|
|
void
|
|
|
|
bstp_stop(struct bstp_state *bs)
|
2005-06-05 02:59:26 +00:00
|
|
|
{
|
2006-07-26 10:43:02 +00:00
|
|
|
struct bstp_port *bp;
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-19 23:08:35 +00:00
|
|
|
BSTP_LOCK(bs);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-01 09:07:47 +00:00
|
|
|
LIST_FOREACH(bp, &bs->bs_bplist, bp_next)
|
|
|
|
bstp_set_port_state(bp, BSTP_IFSTATE_DISCARDING);
|
2005-06-05 02:59:26 +00:00
|
|
|
|
2006-11-09 22:50:49 +00:00
|
|
|
bs->bs_running = 0;
|
2006-11-01 09:07:47 +00:00
|
|
|
callout_stop(&bs->bs_bstpcallout);
|
2006-11-19 23:08:35 +00:00
|
|
|
BSTP_UNLOCK(bs);
|
2005-06-05 02:59:26 +00:00
|
|
|
}
|
2006-07-26 10:43:02 +00:00
|
|
|
|
|
|
|
int
|
2006-11-26 18:43:48 +00:00
|
|
|
bstp_create(struct bstp_state *bs, struct bstp_port *bp, struct ifnet *ifp)
|
2006-07-26 10:43:02 +00:00
|
|
|
{
|
2006-11-01 09:07:47 +00:00
|
|
|
bzero(bp, sizeof(struct bstp_port));
|
|
|
|
|
2006-07-26 10:43:02 +00:00
|
|
|
BSTP_LOCK(bs);
|
|
|
|
bp->bp_ifp = ifp;
|
|
|
|
bp->bp_bs = bs;
|
|
|
|
bp->bp_priority = BSTP_DEFAULT_PORT_PRIORITY;
|
2006-11-01 09:07:47 +00:00
|
|
|
TASK_INIT(&bp->bp_statetask, 0, bstp_notify_state, bp);
|
|
|
|
TASK_INIT(&bp->bp_rtagetask, 0, bstp_notify_rtage, bp);
|
|
|
|
|
|
|
|
/* Init state */
|
|
|
|
bp->bp_flags = BSTP_PORT_AUTOEDGE;
|
|
|
|
bstp_set_port_state(bp, BSTP_IFSTATE_DISCARDING);
|
|
|
|
bstp_set_port_proto(bp, bs->bs_protover);
|
|
|
|
bstp_set_port_role(bp, BSTP_ROLE_DISABLED);
|
|
|
|
bstp_set_port_tc(bp, BSTP_TCSTATE_INACTIVE);
|
|
|
|
bp->bp_path_cost = bstp_calc_path_cost(bp);
|
2006-11-26 18:43:48 +00:00
|
|
|
BSTP_UNLOCK(bs);
|
|
|
|
return (0);
|
|
|
|
}
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-26 18:43:48 +00:00
|
|
|
int
|
|
|
|
bstp_enable(struct bstp_port *bp)
|
|
|
|
{
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
struct ifnet *ifp = bp->bp_ifp;
|
|
|
|
|
|
|
|
KASSERT(bp->bp_active == 0, ("already a bstp member"));
|
2006-07-26 10:43:02 +00:00
|
|
|
|
2006-11-26 18:43:48 +00:00
|
|
|
switch (ifp->if_type) {
|
|
|
|
case IFT_ETHER: /* These can do spanning tree. */
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Nothing else can. */
|
|
|
|
return (EINVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
|
|
|
LIST_INSERT_HEAD(&bs->bs_bplist, bp, bp_next);
|
2006-11-01 09:07:47 +00:00
|
|
|
bp->bp_active = 1;
|
|
|
|
bp->bp_flags |= BSTP_PORT_NEWINFO;
|
|
|
|
bstp_reinit(bs);
|
|
|
|
bstp_update_roles(bs, bp);
|
|
|
|
BSTP_UNLOCK(bs);
|
2006-07-26 10:43:02 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
2006-11-26 18:43:48 +00:00
|
|
|
bstp_disable(struct bstp_port *bp)
|
2006-07-26 10:43:02 +00:00
|
|
|
{
|
|
|
|
struct bstp_state *bs = bp->bp_bs;
|
|
|
|
|
|
|
|
KASSERT(bp->bp_active == 1, ("not a bstp member"));
|
|
|
|
|
|
|
|
BSTP_LOCK(bs);
|
2006-11-26 18:43:48 +00:00
|
|
|
bstp_disable_port(bs, bp);
|
2006-07-26 10:43:02 +00:00
|
|
|
LIST_REMOVE(bp, bp_next);
|
|
|
|
bp->bp_active = 0;
|
|
|
|
bstp_reinit(bs);
|
2006-11-01 09:07:47 +00:00
|
|
|
BSTP_UNLOCK(bs);
|
2006-07-26 10:43:02 +00:00
|
|
|
}
|
2006-08-02 02:47:27 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* The bstp_port structure is about to be freed by the parent bridge.
|
|
|
|
*/
|
|
|
|
void
|
2006-11-26 18:43:48 +00:00
|
|
|
bstp_destroy(struct bstp_port *bp)
|
2006-08-02 02:47:27 +00:00
|
|
|
{
|
|
|
|
KASSERT(bp->bp_active == 0, ("port is still attached"));
|
|
|
|
taskqueue_drain(taskqueue_swi, &bp->bp_statetask);
|
2006-11-01 09:07:47 +00:00
|
|
|
taskqueue_drain(taskqueue_swi, &bp->bp_rtagetask);
|
2006-08-02 02:47:27 +00:00
|
|
|
}
|