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334 lines
8.8 KiB
C
334 lines
8.8 KiB
C
/* $NetBSD: ieee8023ad_impl.h,v 1.2 2005/12/10 23:21:39 elad Exp $ */
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/*-
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* Copyright (c)2005 YAMAMOTO Takashi,
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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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* IEEE802.3ad LACP
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*
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* implementation details.
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*/
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#define LACP_TIMER_CURRENT_WHILE 0
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#define LACP_TIMER_PERIODIC 1
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#define LACP_TIMER_WAIT_WHILE 2
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#define LACP_NTIMER 3
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#define LACP_TIMER_ARM(port, timer, val) \
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(port)->lp_timer[(timer)] = (val)
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#define LACP_TIMER_DISARM(port, timer) \
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(port)->lp_timer[(timer)] = 0
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#define LACP_TIMER_ISARMED(port, timer) \
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((port)->lp_timer[(timer)] > 0)
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/*
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* IEEE802.3ad LACP
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*
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* protocol definitions.
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*/
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#define LACP_STATE_ACTIVITY (1<<0)
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#define LACP_STATE_TIMEOUT (1<<1)
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#define LACP_STATE_AGGREGATION (1<<2)
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#define LACP_STATE_SYNC (1<<3)
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#define LACP_STATE_COLLECTING (1<<4)
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#define LACP_STATE_DISTRIBUTING (1<<5)
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#define LACP_STATE_DEFAULTED (1<<6)
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#define LACP_STATE_EXPIRED (1<<7)
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#define LACP_PORT_NTT 0x00000001
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#define LACP_PORT_MARK 0x00000002
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#define LACP_STATE_BITS \
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"\020" \
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"\001ACTIVITY" \
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"\002TIMEOUT" \
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"\003AGGREGATION" \
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"\004SYNC" \
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"\005COLLECTING" \
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"\006DISTRIBUTING" \
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"\007DEFAULTED" \
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"\010EXPIRED"
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/*
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* IEEE802.3 slow protocols
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*
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* protocol (on-wire) definitions.
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*
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* XXX should be elsewhere.
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*/
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#define SLOWPROTOCOLS_SUBTYPE_LACP 1
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#define SLOWPROTOCOLS_SUBTYPE_MARKER 2
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struct slowprothdr {
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uint8_t sph_subtype;
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uint8_t sph_version;
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} __packed;
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/*
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* TLV on-wire structure.
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*/
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struct tlvhdr {
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uint8_t tlv_type;
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uint8_t tlv_length;
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/* uint8_t tlv_value[]; */
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} __packed;
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/*
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* ... and our implementation.
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*/
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#define TLV_SET(tlv, type, length) \
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do { \
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(tlv)->tlv_type = (type); \
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(tlv)->tlv_length = sizeof(*tlv) + (length); \
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} while (/*CONSTCOND*/0)
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struct tlv_template {
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uint8_t tmpl_type;
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uint8_t tmpl_length;
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};
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struct lacp_systemid {
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uint16_t lsi_prio;
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uint8_t lsi_mac[6];
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} __packed;
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struct lacp_portid {
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uint16_t lpi_prio;
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uint16_t lpi_portno;
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} __packed;
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struct lacp_peerinfo {
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struct lacp_systemid lip_systemid;
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uint16_t lip_key;
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struct lacp_portid lip_portid;
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uint8_t lip_state;
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uint8_t lip_resv[3];
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} __packed;
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struct lacp_collectorinfo {
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uint16_t lci_maxdelay;
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uint8_t lci_resv[12];
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} __packed;
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struct lacpdu {
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struct ether_header ldu_eh;
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struct slowprothdr ldu_sph;
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struct tlvhdr ldu_tlv_actor;
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struct lacp_peerinfo ldu_actor;
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struct tlvhdr ldu_tlv_partner;
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struct lacp_peerinfo ldu_partner;
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struct tlvhdr ldu_tlv_collector;
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struct lacp_collectorinfo ldu_collector;
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struct tlvhdr ldu_tlv_term;
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uint8_t ldu_resv[50];
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} __packed;
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/*
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* IEEE802.3ad marker protocol
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*
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* protocol (on-wire) definitions.
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*/
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struct lacp_markerinfo {
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uint16_t mi_rq_port;
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uint8_t mi_rq_system[ETHER_ADDR_LEN];
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uint32_t mi_rq_xid;
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uint8_t mi_pad[2];
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} __packed;
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struct markerdu {
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struct ether_header mdu_eh;
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struct slowprothdr mdu_sph;
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struct tlvhdr mdu_tlv;
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struct lacp_markerinfo mdu_info;
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struct tlvhdr mdu_tlv_term;
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uint8_t mdu_resv[90];
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} __packed;
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#define MARKER_TYPE_INFO 0x01
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#define MARKER_TYPE_RESPONSE 0x02
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enum lacp_selected {
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LACP_UNSELECTED,
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LACP_STANDBY, /* not used in this implementation */
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LACP_SELECTED,
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};
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enum lacp_mux_state {
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LACP_MUX_DETACHED,
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LACP_MUX_WAITING,
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LACP_MUX_ATTACHED,
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LACP_MUX_COLLECTING,
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LACP_MUX_DISTRIBUTING,
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};
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#define LACP_MAX_PORTS 32
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struct lacp_portmap {
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int pm_count;
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struct lacp_port *pm_map[LACP_MAX_PORTS];
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};
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struct lacp_port {
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TAILQ_ENTRY(lacp_port) lp_dist_q;
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LIST_ENTRY(lacp_port) lp_next;
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struct lacp_softc *lp_lsc;
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struct lagg_port *lp_lagg;
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struct ifnet *lp_ifp;
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struct lacp_peerinfo lp_partner;
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struct lacp_peerinfo lp_actor;
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struct lacp_markerinfo lp_marker;
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#define lp_state lp_actor.lip_state
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#define lp_key lp_actor.lip_key
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#define lp_systemid lp_actor.lip_systemid
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struct timeval lp_last_lacpdu;
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int lp_lacpdu_sent;
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enum lacp_mux_state lp_mux_state;
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enum lacp_selected lp_selected;
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int lp_flags;
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u_int lp_media; /* XXX redundant */
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int lp_timer[LACP_NTIMER];
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struct ifmultiaddr *lp_ifma;
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struct lacp_aggregator *lp_aggregator;
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};
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struct lacp_aggregator {
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TAILQ_ENTRY(lacp_aggregator) la_q;
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int la_refcnt; /* num of ports which selected us */
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int la_nports; /* num of distributing ports */
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TAILQ_HEAD(, lacp_port) la_ports; /* distributing ports */
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struct lacp_peerinfo la_partner;
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struct lacp_peerinfo la_actor;
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int la_pending; /* number of ports in wait_while */
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};
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struct lacp_softc {
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struct lagg_softc *lsc_softc;
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struct mtx lsc_mtx;
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struct lacp_aggregator *lsc_active_aggregator;
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TAILQ_HEAD(, lacp_aggregator) lsc_aggregators;
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boolean_t lsc_suppress_distributing;
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struct callout lsc_transit_callout;
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struct callout lsc_callout;
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LIST_HEAD(, lacp_port) lsc_ports;
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struct lacp_portmap lsc_pmap[2];
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volatile u_int lsc_activemap;
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u_int32_t lsc_hashkey;
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};
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#define LACP_TYPE_ACTORINFO 1
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#define LACP_TYPE_PARTNERINFO 2
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#define LACP_TYPE_COLLECTORINFO 3
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/* timeout values (in sec) */
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#define LACP_FAST_PERIODIC_TIME (1)
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#define LACP_SLOW_PERIODIC_TIME (30)
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#define LACP_SHORT_TIMEOUT_TIME (3 * LACP_FAST_PERIODIC_TIME)
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#define LACP_LONG_TIMEOUT_TIME (3 * LACP_SLOW_PERIODIC_TIME)
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#define LACP_CHURN_DETECTION_TIME (60)
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#define LACP_AGGREGATE_WAIT_TIME (2)
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#define LACP_TRANSIT_DELAY 3000 /* in msec */
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#define LACP_STATE_EQ(s1, s2, mask) \
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((((s1) ^ (s2)) & (mask)) == 0)
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#define LACP_SYS_PRI(peer) (peer).lip_systemid.lsi_prio
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#define LACP_PORT(_lp) ((struct lacp_port *)(_lp)->lp_psc)
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#define LACP_SOFTC(_sc) ((struct lacp_softc *)(_sc)->sc_psc)
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#define LACP_LOCK_INIT(_lsc) mtx_init(&(_lsc)->lsc_mtx, \
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"lacp mtx", NULL, MTX_DEF)
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#define LACP_LOCK_DESTROY(_lsc) mtx_destroy(&(_lsc)->lsc_mtx)
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#define LACP_LOCK(_lsc) mtx_lock(&(_lsc)->lsc_mtx)
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#define LACP_UNLOCK(_lsc) mtx_unlock(&(_lsc)->lsc_mtx)
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#define LACP_LOCK_ASSERT(_lsc) mtx_assert(&(_lsc)->lsc_mtx, MA_OWNED)
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struct mbuf *lacp_input(struct lagg_port *, struct mbuf *);
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struct lagg_port *lacp_select_tx_port(struct lagg_softc *, struct mbuf *);
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int lacp_attach(struct lagg_softc *);
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int lacp_detach(struct lagg_softc *);
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void lacp_init(struct lagg_softc *);
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void lacp_stop(struct lagg_softc *);
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int lacp_port_create(struct lagg_port *);
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void lacp_port_destroy(struct lagg_port *);
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void lacp_linkstate(struct lagg_port *);
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void lacp_req(struct lagg_softc *, caddr_t);
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void lacp_portreq(struct lagg_port *, caddr_t);
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static __inline int
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lacp_isactive(struct lagg_port *lgp)
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{
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struct lacp_port *lp = LACP_PORT(lgp);
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struct lacp_softc *lsc = lp->lp_lsc;
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struct lacp_aggregator *la = lp->lp_aggregator;
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/* This port is joined to the active aggregator */
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if (la != NULL && la == lsc->lsc_active_aggregator)
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return (1);
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return (0);
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}
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static __inline int
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lacp_iscollecting(struct lagg_port *lgp)
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{
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struct lacp_port *lp = LACP_PORT(lgp);
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return ((lp->lp_state & LACP_STATE_COLLECTING) != 0);
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}
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static __inline int
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lacp_isdistributing(struct lagg_port *lgp)
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{
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struct lacp_port *lp = LACP_PORT(lgp);
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return ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0);
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}
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/* following constants don't include terminating NUL */
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#define LACP_MACSTR_MAX (2*6 + 5)
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#define LACP_SYSTEMPRIOSTR_MAX (4)
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#define LACP_SYSTEMIDSTR_MAX (LACP_SYSTEMPRIOSTR_MAX + 1 + LACP_MACSTR_MAX)
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#define LACP_PORTPRIOSTR_MAX (4)
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#define LACP_PORTNOSTR_MAX (4)
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#define LACP_PORTIDSTR_MAX (LACP_PORTPRIOSTR_MAX + 1 + LACP_PORTNOSTR_MAX)
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#define LACP_KEYSTR_MAX (4)
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#define LACP_PARTNERSTR_MAX \
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(1 + LACP_SYSTEMIDSTR_MAX + 1 + LACP_KEYSTR_MAX + 1 \
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+ LACP_PORTIDSTR_MAX + 1)
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#define LACP_LAGIDSTR_MAX \
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(1 + LACP_PARTNERSTR_MAX + 1 + LACP_PARTNERSTR_MAX + 1)
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#define LACP_STATESTR_MAX (255) /* XXX */
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