| 1 | /* $NetBSD: ieee8023ad_lacp_impl.h,v 1.5 2007/02/21 23:00:06 thorpej 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_ */ |
| 130 | |