1168561Sthompsa/* $NetBSD: ieee8023ad_impl.h,v 1.2 2005/12/10 23:21:39 elad Exp $ */ 2168561Sthompsa 3168561Sthompsa/*- 4168561Sthompsa * Copyright (c)2005 YAMAMOTO Takashi, 5168561Sthompsa * All rights reserved. 6168561Sthompsa * 7168561Sthompsa * Redistribution and use in source and binary forms, with or without 8168561Sthompsa * modification, are permitted provided that the following conditions 9168561Sthompsa * are met: 10168561Sthompsa * 1. Redistributions of source code must retain the above copyright 11168561Sthompsa * notice, this list of conditions and the following disclaimer. 12168561Sthompsa * 2. Redistributions in binary form must reproduce the above copyright 13168561Sthompsa * notice, this list of conditions and the following disclaimer in the 14168561Sthompsa * documentation and/or other materials provided with the distribution. 15168561Sthompsa * 16168561Sthompsa * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17168561Sthompsa * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18168561Sthompsa * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19168561Sthompsa * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20168561Sthompsa * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21168561Sthompsa * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22168561Sthompsa * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23168561Sthompsa * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24168561Sthompsa * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25168561Sthompsa * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26168561Sthompsa * SUCH DAMAGE. 27168561Sthompsa * 28168561Sthompsa * $FreeBSD$ 29168561Sthompsa */ 30168561Sthompsa 31168561Sthompsa/* 32168561Sthompsa * IEEE802.3ad LACP 33168561Sthompsa * 34168561Sthompsa * implementation details. 35168561Sthompsa */ 36168561Sthompsa 37168561Sthompsa#define LACP_TIMER_CURRENT_WHILE 0 38168561Sthompsa#define LACP_TIMER_PERIODIC 1 39168561Sthompsa#define LACP_TIMER_WAIT_WHILE 2 40168561Sthompsa#define LACP_NTIMER 3 41168561Sthompsa 42168561Sthompsa#define LACP_TIMER_ARM(port, timer, val) \ 43168561Sthompsa (port)->lp_timer[(timer)] = (val) 44168561Sthompsa#define LACP_TIMER_DISARM(port, timer) \ 45168561Sthompsa (port)->lp_timer[(timer)] = 0 46168561Sthompsa#define LACP_TIMER_ISARMED(port, timer) \ 47168561Sthompsa ((port)->lp_timer[(timer)] > 0) 48168561Sthompsa 49168561Sthompsa/* 50168561Sthompsa * IEEE802.3ad LACP 51168561Sthompsa * 52168561Sthompsa * protocol definitions. 53168561Sthompsa */ 54168561Sthompsa 55168561Sthompsa#define LACP_STATE_ACTIVITY (1<<0) 56168561Sthompsa#define LACP_STATE_TIMEOUT (1<<1) 57168561Sthompsa#define LACP_STATE_AGGREGATION (1<<2) 58168561Sthompsa#define LACP_STATE_SYNC (1<<3) 59168561Sthompsa#define LACP_STATE_COLLECTING (1<<4) 60168561Sthompsa#define LACP_STATE_DISTRIBUTING (1<<5) 61168561Sthompsa#define LACP_STATE_DEFAULTED (1<<6) 62168561Sthompsa#define LACP_STATE_EXPIRED (1<<7) 63168561Sthompsa 64170599Sthompsa#define LACP_PORT_NTT 0x00000001 65170599Sthompsa#define LACP_PORT_MARK 0x00000002 66168561Sthompsa 67168561Sthompsa#define LACP_STATE_BITS \ 68168561Sthompsa "\020" \ 69168561Sthompsa "\001ACTIVITY" \ 70168561Sthompsa "\002TIMEOUT" \ 71168561Sthompsa "\003AGGREGATION" \ 72168561Sthompsa "\004SYNC" \ 73168561Sthompsa "\005COLLECTING" \ 74168561Sthompsa "\006DISTRIBUTING" \ 75168561Sthompsa "\007DEFAULTED" \ 76168561Sthompsa "\010EXPIRED" 77168561Sthompsa 78168561Sthompsa/* 79168561Sthompsa * IEEE802.3 slow protocols 80168561Sthompsa * 81168561Sthompsa * protocol (on-wire) definitions. 82168561Sthompsa * 83168561Sthompsa * XXX should be elsewhere. 84168561Sthompsa */ 85168561Sthompsa 86168561Sthompsa#define SLOWPROTOCOLS_SUBTYPE_LACP 1 87168561Sthompsa#define SLOWPROTOCOLS_SUBTYPE_MARKER 2 88168561Sthompsa 89168561Sthompsastruct slowprothdr { 90168561Sthompsa uint8_t sph_subtype; 91168561Sthompsa uint8_t sph_version; 92168561Sthompsa} __packed; 93168561Sthompsa 94168561Sthompsa/* 95168561Sthompsa * TLV on-wire structure. 96168561Sthompsa */ 97168561Sthompsa 98168561Sthompsastruct tlvhdr { 99168561Sthompsa uint8_t tlv_type; 100168561Sthompsa uint8_t tlv_length; 101168561Sthompsa /* uint8_t tlv_value[]; */ 102168561Sthompsa} __packed; 103168561Sthompsa 104168561Sthompsa/* 105168561Sthompsa * ... and our implementation. 106168561Sthompsa */ 107168561Sthompsa 108168561Sthompsa#define TLV_SET(tlv, type, length) \ 109168561Sthompsa do { \ 110168561Sthompsa (tlv)->tlv_type = (type); \ 111168561Sthompsa (tlv)->tlv_length = sizeof(*tlv) + (length); \ 112168561Sthompsa } while (/*CONSTCOND*/0) 113168561Sthompsa 114168561Sthompsastruct tlv_template { 115168561Sthompsa uint8_t tmpl_type; 116168561Sthompsa uint8_t tmpl_length; 117168561Sthompsa}; 118168561Sthompsa 119168561Sthompsastruct lacp_systemid { 120168561Sthompsa uint16_t lsi_prio; 121168561Sthompsa uint8_t lsi_mac[6]; 122168561Sthompsa} __packed; 123168561Sthompsa 124168561Sthompsastruct lacp_portid { 125168561Sthompsa uint16_t lpi_prio; 126168561Sthompsa uint16_t lpi_portno; 127168561Sthompsa} __packed; 128168561Sthompsa 129168561Sthompsastruct lacp_peerinfo { 130170599Sthompsa struct lacp_systemid lip_systemid; 131168561Sthompsa uint16_t lip_key; 132170599Sthompsa struct lacp_portid lip_portid; 133168561Sthompsa uint8_t lip_state; 134168561Sthompsa uint8_t lip_resv[3]; 135168561Sthompsa} __packed; 136168561Sthompsa 137168561Sthompsastruct lacp_collectorinfo { 138168561Sthompsa uint16_t lci_maxdelay; 139168561Sthompsa uint8_t lci_resv[12]; 140168561Sthompsa} __packed; 141168561Sthompsa 142168561Sthompsastruct lacpdu { 143168561Sthompsa struct ether_header ldu_eh; 144168561Sthompsa struct slowprothdr ldu_sph; 145168561Sthompsa 146168561Sthompsa struct tlvhdr ldu_tlv_actor; 147168561Sthompsa struct lacp_peerinfo ldu_actor; 148168561Sthompsa struct tlvhdr ldu_tlv_partner; 149168561Sthompsa struct lacp_peerinfo ldu_partner; 150168561Sthompsa struct tlvhdr ldu_tlv_collector; 151168561Sthompsa struct lacp_collectorinfo ldu_collector; 152168561Sthompsa struct tlvhdr ldu_tlv_term; 153168561Sthompsa uint8_t ldu_resv[50]; 154168561Sthompsa} __packed; 155168561Sthompsa 156169739Sthompsa/* 157169739Sthompsa * IEEE802.3ad marker protocol 158169739Sthompsa * 159169739Sthompsa * protocol (on-wire) definitions. 160169739Sthompsa */ 161169739Sthompsastruct lacp_markerinfo { 162169739Sthompsa uint16_t mi_rq_port; 163169739Sthompsa uint8_t mi_rq_system[ETHER_ADDR_LEN]; 164169739Sthompsa uint32_t mi_rq_xid; 165169739Sthompsa uint8_t mi_pad[2]; 166169739Sthompsa} __packed; 167168561Sthompsa 168169739Sthompsastruct markerdu { 169169739Sthompsa struct ether_header mdu_eh; 170169739Sthompsa struct slowprothdr mdu_sph; 171169739Sthompsa 172169739Sthompsa struct tlvhdr mdu_tlv; 173169739Sthompsa struct lacp_markerinfo mdu_info; 174169739Sthompsa struct tlvhdr mdu_tlv_term; 175169739Sthompsa uint8_t mdu_resv[90]; 176169739Sthompsa} __packed; 177169739Sthompsa 178169739Sthompsa#define MARKER_TYPE_INFO 0x01 179169739Sthompsa#define MARKER_TYPE_RESPONSE 0x02 180169739Sthompsa 181168561Sthompsaenum lacp_selected { 182168561Sthompsa LACP_UNSELECTED, 183168561Sthompsa LACP_STANDBY, /* not used in this implementation */ 184168561Sthompsa LACP_SELECTED, 185168561Sthompsa}; 186168561Sthompsa 187168561Sthompsaenum lacp_mux_state { 188168561Sthompsa LACP_MUX_DETACHED, 189168561Sthompsa LACP_MUX_WAITING, 190168561Sthompsa LACP_MUX_ATTACHED, 191168561Sthompsa LACP_MUX_COLLECTING, 192168561Sthompsa LACP_MUX_DISTRIBUTING, 193168561Sthompsa}; 194168561Sthompsa 195177274Sthompsa#define LACP_MAX_PORTS 32 196177274Sthompsa 197177274Sthompsastruct lacp_portmap { 198177274Sthompsa int pm_count; 199177274Sthompsa struct lacp_port *pm_map[LACP_MAX_PORTS]; 200177274Sthompsa}; 201177274Sthompsa 202168561Sthompsastruct lacp_port { 203168561Sthompsa TAILQ_ENTRY(lacp_port) lp_dist_q; 204168561Sthompsa LIST_ENTRY(lacp_port) lp_next; 205168561Sthompsa struct lacp_softc *lp_lsc; 206168793Sthompsa struct lagg_port *lp_lagg; 207168561Sthompsa struct ifnet *lp_ifp; 208168561Sthompsa struct lacp_peerinfo lp_partner; 209168561Sthompsa struct lacp_peerinfo lp_actor; 210169739Sthompsa struct lacp_markerinfo lp_marker; 211168561Sthompsa#define lp_state lp_actor.lip_state 212168561Sthompsa#define lp_key lp_actor.lip_key 213169739Sthompsa#define lp_systemid lp_actor.lip_systemid 214168561Sthompsa struct timeval lp_last_lacpdu; 215168561Sthompsa int lp_lacpdu_sent; 216168561Sthompsa enum lacp_mux_state lp_mux_state; 217168561Sthompsa enum lacp_selected lp_selected; 218168561Sthompsa int lp_flags; 219168561Sthompsa u_int lp_media; /* XXX redundant */ 220168561Sthompsa int lp_timer[LACP_NTIMER]; 221169327Sthompsa struct ifmultiaddr *lp_ifma; 222168561Sthompsa 223168561Sthompsa struct lacp_aggregator *lp_aggregator; 224168561Sthompsa}; 225168561Sthompsa 226168561Sthompsastruct lacp_aggregator { 227168561Sthompsa TAILQ_ENTRY(lacp_aggregator) la_q; 228168561Sthompsa int la_refcnt; /* num of ports which selected us */ 229168561Sthompsa int la_nports; /* num of distributing ports */ 230168561Sthompsa TAILQ_HEAD(, lacp_port) la_ports; /* distributing ports */ 231168561Sthompsa struct lacp_peerinfo la_partner; 232168561Sthompsa struct lacp_peerinfo la_actor; 233170599Sthompsa int la_pending; /* number of ports in wait_while */ 234168561Sthompsa}; 235168561Sthompsa 236168561Sthompsastruct lacp_softc { 237170599Sthompsa struct lagg_softc *lsc_softc; 238177274Sthompsa struct mtx lsc_mtx; 239168561Sthompsa struct lacp_aggregator *lsc_active_aggregator; 240168561Sthompsa TAILQ_HEAD(, lacp_aggregator) lsc_aggregators; 241168561Sthompsa boolean_t lsc_suppress_distributing; 242168561Sthompsa struct callout lsc_transit_callout; 243168561Sthompsa struct callout lsc_callout; 244168561Sthompsa LIST_HEAD(, lacp_port) lsc_ports; 245177274Sthompsa struct lacp_portmap lsc_pmap[2]; 246177274Sthompsa volatile u_int lsc_activemap; 247168561Sthompsa u_int32_t lsc_hashkey; 248168561Sthompsa}; 249168561Sthompsa 250168561Sthompsa#define LACP_TYPE_ACTORINFO 1 251168561Sthompsa#define LACP_TYPE_PARTNERINFO 2 252168561Sthompsa#define LACP_TYPE_COLLECTORINFO 3 253168561Sthompsa 254168561Sthompsa/* timeout values (in sec) */ 255168561Sthompsa#define LACP_FAST_PERIODIC_TIME (1) 256168561Sthompsa#define LACP_SLOW_PERIODIC_TIME (30) 257168561Sthompsa#define LACP_SHORT_TIMEOUT_TIME (3 * LACP_FAST_PERIODIC_TIME) 258168561Sthompsa#define LACP_LONG_TIMEOUT_TIME (3 * LACP_SLOW_PERIODIC_TIME) 259168561Sthompsa#define LACP_CHURN_DETECTION_TIME (60) 260168561Sthompsa#define LACP_AGGREGATE_WAIT_TIME (2) 261169739Sthompsa#define LACP_TRANSIT_DELAY 3000 /* in msec */ 262168561Sthompsa 263168561Sthompsa#define LACP_STATE_EQ(s1, s2, mask) \ 264168561Sthompsa ((((s1) ^ (s2)) & (mask)) == 0) 265168561Sthompsa 266169741Sthompsa#define LACP_SYS_PRI(peer) (peer).lip_systemid.lsi_prio 267169741Sthompsa 268168793Sthompsa#define LACP_PORT(_lp) ((struct lacp_port *)(_lp)->lp_psc) 269168793Sthompsa#define LACP_SOFTC(_sc) ((struct lacp_softc *)(_sc)->sc_psc) 270168561Sthompsa 271177274Sthompsa#define LACP_LOCK_INIT(_lsc) mtx_init(&(_lsc)->lsc_mtx, \ 272177289Sthompsa "lacp mtx", NULL, MTX_DEF) 273177289Sthompsa#define LACP_LOCK_DESTROY(_lsc) mtx_destroy(&(_lsc)->lsc_mtx) 274177274Sthompsa#define LACP_LOCK(_lsc) mtx_lock(&(_lsc)->lsc_mtx) 275177274Sthompsa#define LACP_UNLOCK(_lsc) mtx_unlock(&(_lsc)->lsc_mtx) 276177274Sthompsa#define LACP_LOCK_ASSERT(_lsc) mtx_assert(&(_lsc)->lsc_mtx, MA_OWNED) 277177274Sthompsa 278175005Sthompsastruct mbuf *lacp_input(struct lagg_port *, struct mbuf *); 279168793Sthompsastruct lagg_port *lacp_select_tx_port(struct lagg_softc *, struct mbuf *); 280168793Sthompsaint lacp_attach(struct lagg_softc *); 281168793Sthompsaint lacp_detach(struct lagg_softc *); 282168793Sthompsavoid lacp_init(struct lagg_softc *); 283168793Sthompsavoid lacp_stop(struct lagg_softc *); 284168793Sthompsaint lacp_port_create(struct lagg_port *); 285168793Sthompsavoid lacp_port_destroy(struct lagg_port *); 286168793Sthompsavoid lacp_linkstate(struct lagg_port *); 287171247Sthompsavoid lacp_req(struct lagg_softc *, caddr_t); 288171247Sthompsavoid lacp_portreq(struct lagg_port *, caddr_t); 289168561Sthompsa 290177274Sthompsastatic __inline int 291177274Sthompsalacp_isactive(struct lagg_port *lgp) 292177274Sthompsa{ 293177274Sthompsa struct lacp_port *lp = LACP_PORT(lgp); 294177274Sthompsa struct lacp_softc *lsc = lp->lp_lsc; 295177274Sthompsa struct lacp_aggregator *la = lp->lp_aggregator; 296177274Sthompsa 297177274Sthompsa /* This port is joined to the active aggregator */ 298177274Sthompsa if (la != NULL && la == lsc->lsc_active_aggregator) 299177274Sthompsa return (1); 300177274Sthompsa 301177274Sthompsa return (0); 302177274Sthompsa} 303177274Sthompsa 304177274Sthompsastatic __inline int 305177274Sthompsalacp_iscollecting(struct lagg_port *lgp) 306177274Sthompsa{ 307177274Sthompsa struct lacp_port *lp = LACP_PORT(lgp); 308177274Sthompsa 309177274Sthompsa return ((lp->lp_state & LACP_STATE_COLLECTING) != 0); 310177274Sthompsa} 311177274Sthompsa 312177274Sthompsastatic __inline int 313177274Sthompsalacp_isdistributing(struct lagg_port *lgp) 314177274Sthompsa{ 315177274Sthompsa struct lacp_port *lp = LACP_PORT(lgp); 316177274Sthompsa 317177274Sthompsa return ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0); 318177274Sthompsa} 319177274Sthompsa 320168561Sthompsa/* following constants don't include terminating NUL */ 321168561Sthompsa#define LACP_MACSTR_MAX (2*6 + 5) 322168561Sthompsa#define LACP_SYSTEMPRIOSTR_MAX (4) 323168561Sthompsa#define LACP_SYSTEMIDSTR_MAX (LACP_SYSTEMPRIOSTR_MAX + 1 + LACP_MACSTR_MAX) 324168561Sthompsa#define LACP_PORTPRIOSTR_MAX (4) 325168561Sthompsa#define LACP_PORTNOSTR_MAX (4) 326168561Sthompsa#define LACP_PORTIDSTR_MAX (LACP_PORTPRIOSTR_MAX + 1 + LACP_PORTNOSTR_MAX) 327168561Sthompsa#define LACP_KEYSTR_MAX (4) 328168561Sthompsa#define LACP_PARTNERSTR_MAX \ 329168561Sthompsa (1 + LACP_SYSTEMIDSTR_MAX + 1 + LACP_KEYSTR_MAX + 1 \ 330168561Sthompsa + LACP_PORTIDSTR_MAX + 1) 331168561Sthompsa#define LACP_LAGIDSTR_MAX \ 332168561Sthompsa (1 + LACP_PARTNERSTR_MAX + 1 + LACP_PARTNERSTR_MAX + 1) 333168561Sthompsa#define LACP_STATESTR_MAX (255) /* XXX */ 334