sys/net/agr/ieee8023ad_lacp_impl.h

   1 /*      $NetBSD: ieee8023ad_lacp_impl.h,v 1.4 2006/10/29 22:14:14 yamt Exp $    */
   2
   3 /*-
   4  * Copyright (c)2005 YAMAMOTO Takashi,
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #ifndef _NET_AGR_IEEE8023AD_LACP_IMPL_H_
  30 #define _NET_AGR_IEEE8023AD_LACP_IMPL_H_
  31
  32 /*
  33  * IEEE802.3ad LACP
  34  *
  35  * implementation details.
  36  */
  37
  38 #include <sys/queue.h>
  39
  40 #define LACP_TIMER_CURRENT_WHILE        0
  41 #define LACP_TIMER_PERIODIC             1
  42 #define LACP_TIMER_WAIT_WHILE           2
  43 #define LACP_NTIMER                     3
  44
  45 #define LACP_TIMER_ARM(port, timer, val) \
  46         (port)->lp_timer[(timer)] = (val)
  47 #define LACP_TIMER_DISARM(port, timer) \
  48         (port)->lp_timer[(timer)] = 0
  49 #define LACP_TIMER_ISARMED(port, timer) \
  50         ((port)->lp_timer[(timer)] > 0)
  51
  52 struct lacp_aggregator {
  53         TAILQ_ENTRY(lacp_aggregator) la_q;
  54         int la_refcnt; /* number of ports which selected us */
  55         int la_nports; /* number of distributing ports  */
  56         TAILQ_HEAD(, lacp_port) la_ports; /* distributing ports */
  57         struct lacp_peerinfo la_partner;
  58         struct lacp_peerinfo la_actor;
  59         int la_pending; /* number of ports which is waiting wait_while */
  60 };
  61
  62 struct lacp_softc {
  63         struct lacp_aggregator *lsc_active_aggregator;
  64         TAILQ_HEAD(, lacp_aggregator) lsc_aggregators;
  65         bool lsc_suppress_distributing;
  66         struct callout lsc_transit_callout;
  67 };
  68
  69 #define LACP_TRANSIT_DELAY      1000    /* in msec */
  70
  71 enum lacp_selected {
  72         LACP_UNSELECTED,
  73         LACP_STANDBY,   /* not used in this implementation */
  74         LACP_SELECTED,
  75 };
  76
  77 enum lacp_mux_state {
  78         LACP_MUX_DETACHED,
  79         LACP_MUX_WAITING,
  80         LACP_MUX_ATTACHED,
  81         LACP_MUX_COLLECTING,
  82         LACP_MUX_DISTRIBUTING,
  83 };
  84
  85 struct lacp_port {
  86         TAILQ_ENTRY(lacp_port) lp_dist_q;
  87         struct agr_port *lp_agrport;
  88         struct lacp_peerinfo lp_partner;
  89         struct lacp_peerinfo lp_actor;
  90 #define lp_state        lp_actor.lip_state
  91 #define lp_key          lp_actor.lip_key
  92         int lp_last_lacpdu_sent;
  93         enum lacp_mux_state lp_mux_state;
  94         enum lacp_selected lp_selected;
  95         int lp_flags;
  96         u_int lp_media; /* XXX redundant */
  97         int lp_timer[LACP_NTIMER];
  98
  99         struct lacp_aggregator *lp_aggregator;
 100 };
 101
 102 #define LACPPORT_NTT            1       /* need to transmit */
 103
 104 #define LACP_SOFTC(sc) \
 105         (&IEEE8023AD_SOFTC(sc)->isc_lacpsc)
 106 #define LACP_PORT(port) \
 107         (&IEEE8023AD_PORT(port)->iport_lacpport)
 108
 109 void lacp_run_timers(struct lacp_port *);
 110 void lacp_portinit(struct agr_port *);
 111 void lacp_portfini(struct agr_port *);
 112 int lacp_compare_peerinfo(const struct lacp_peerinfo *,
 113     const struct lacp_peerinfo *);
 114 int lacp_compare_systemid(const struct lacp_systemid *,
 115     const struct lacp_systemid *);
 116 int lacp_compare_portid(const struct lacp_portid *,
 117     const struct lacp_portid *);
 118
 119 void lacp_select(struct lacp_port *);
 120 void lacp_unselect(struct lacp_port *);
 121
 122 void lacp_disable_collecting(struct lacp_port *);
 123 void lacp_enable_collecting(struct lacp_port *);
 124 void lacp_disable_distributing(struct lacp_port *);
 125 void lacp_enable_distributing(struct lacp_port *);
 126
 127 int lacp_xmit_lacpdu(struct lacp_port *);
 128
 129 #endif /* !_NET_AGR_IEEE8023AD_LACP_IMPL_H_ */