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freebsd-skq/sys/net/ieee8023ad_lacp.h
Pedro F. Giffuni fe267a5590 sys: general adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.
2017-11-27 15:23:17 +00:00

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/* $NetBSD: ieee8023ad_impl.h,v 1.2 2005/12/10 23:21:39 elad Exp $ */
/*-
* SPDX-License-Identifier: BSD-2-Clause-NetBSD
*
* Copyright (c)2005 YAMAMOTO Takashi,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* IEEE802.3ad LACP
*
* implementation details.
*/
#define LACP_TIMER_CURRENT_WHILE 0
#define LACP_TIMER_PERIODIC 1
#define LACP_TIMER_WAIT_WHILE 2
#define LACP_NTIMER 3
#define LACP_TIMER_ARM(port, timer, val) \
(port)->lp_timer[(timer)] = (val)
#define LACP_TIMER_DISARM(port, timer) \
(port)->lp_timer[(timer)] = 0
#define LACP_TIMER_ISARMED(port, timer) \
((port)->lp_timer[(timer)] > 0)
/*
* IEEE802.3ad LACP
*
* protocol definitions.
*/
#define LACP_STATE_ACTIVITY (1<<0)
#define LACP_STATE_TIMEOUT (1<<1)
#define LACP_STATE_AGGREGATION (1<<2)
#define LACP_STATE_SYNC (1<<3)
#define LACP_STATE_COLLECTING (1<<4)
#define LACP_STATE_DISTRIBUTING (1<<5)
#define LACP_STATE_DEFAULTED (1<<6)
#define LACP_STATE_EXPIRED (1<<7)
#define LACP_PORT_NTT 0x00000001
#define LACP_PORT_MARK 0x00000002
#define LACP_STATE_BITS \
"\020" \
"\001ACTIVITY" \
"\002TIMEOUT" \
"\003AGGREGATION" \
"\004SYNC" \
"\005COLLECTING" \
"\006DISTRIBUTING" \
"\007DEFAULTED" \
"\010EXPIRED"
#ifdef _KERNEL
/*
* IEEE802.3 slow protocols
*
* protocol (on-wire) definitions.
*
* XXX should be elsewhere.
*/
#define SLOWPROTOCOLS_SUBTYPE_LACP 1
#define SLOWPROTOCOLS_SUBTYPE_MARKER 2
struct slowprothdr {
uint8_t sph_subtype;
uint8_t sph_version;
} __packed;
/*
* TLV on-wire structure.
*/
struct tlvhdr {
uint8_t tlv_type;
uint8_t tlv_length;
/* uint8_t tlv_value[]; */
} __packed;
/*
* ... and our implementation.
*/
#define TLV_SET(tlv, type, length) \
do { \
(tlv)->tlv_type = (type); \
(tlv)->tlv_length = sizeof(*tlv) + (length); \
} while (/*CONSTCOND*/0)
struct tlv_template {
uint8_t tmpl_type;
uint8_t tmpl_length;
};
struct lacp_systemid {
uint16_t lsi_prio;
uint8_t lsi_mac[6];
} __packed;
struct lacp_portid {
uint16_t lpi_prio;
uint16_t lpi_portno;
} __packed;
struct lacp_peerinfo {
struct lacp_systemid lip_systemid;
uint16_t lip_key;
struct lacp_portid lip_portid;
uint8_t lip_state;
uint8_t lip_resv[3];
} __packed;
struct lacp_collectorinfo {
uint16_t lci_maxdelay;
uint8_t lci_resv[12];
} __packed;
struct lacpdu {
struct ether_header ldu_eh;
struct slowprothdr ldu_sph;
struct tlvhdr ldu_tlv_actor;
struct lacp_peerinfo ldu_actor;
struct tlvhdr ldu_tlv_partner;
struct lacp_peerinfo ldu_partner;
struct tlvhdr ldu_tlv_collector;
struct lacp_collectorinfo ldu_collector;
struct tlvhdr ldu_tlv_term;
uint8_t ldu_resv[50];
} __packed;
/*
* IEEE802.3ad marker protocol
*
* protocol (on-wire) definitions.
*/
struct lacp_markerinfo {
uint16_t mi_rq_port;
uint8_t mi_rq_system[ETHER_ADDR_LEN];
uint32_t mi_rq_xid;
uint8_t mi_pad[2];
} __packed;
struct markerdu {
struct ether_header mdu_eh;
struct slowprothdr mdu_sph;
struct tlvhdr mdu_tlv;
struct lacp_markerinfo mdu_info;
struct tlvhdr mdu_tlv_term;
uint8_t mdu_resv[90];
} __packed;
#define MARKER_TYPE_INFO 0x01
#define MARKER_TYPE_RESPONSE 0x02
enum lacp_selected {
LACP_UNSELECTED,
LACP_STANDBY, /* not used in this implementation */
LACP_SELECTED,
};
enum lacp_mux_state {
LACP_MUX_DETACHED,
LACP_MUX_WAITING,
LACP_MUX_ATTACHED,
LACP_MUX_COLLECTING,
LACP_MUX_DISTRIBUTING,
};
#define LACP_MAX_PORTS 32
struct lacp_portmap {
int pm_count;
struct lacp_port *pm_map[LACP_MAX_PORTS];
};
struct lacp_port {
TAILQ_ENTRY(lacp_port) lp_dist_q;
LIST_ENTRY(lacp_port) lp_next;
struct lacp_softc *lp_lsc;
struct lagg_port *lp_lagg;
struct ifnet *lp_ifp;
struct lacp_peerinfo lp_partner;
struct lacp_peerinfo lp_actor;
struct lacp_markerinfo lp_marker;
#define lp_state lp_actor.lip_state
#define lp_key lp_actor.lip_key
#define lp_systemid lp_actor.lip_systemid
struct timeval lp_last_lacpdu;
int lp_lacpdu_sent;
enum lacp_mux_state lp_mux_state;
enum lacp_selected lp_selected;
int lp_flags;
u_int lp_media; /* XXX redundant */
int lp_timer[LACP_NTIMER];
struct ifmultiaddr *lp_ifma;
struct lacp_aggregator *lp_aggregator;
};
struct lacp_aggregator {
TAILQ_ENTRY(lacp_aggregator) la_q;
int la_refcnt; /* num of ports which selected us */
int la_nports; /* num of distributing ports */
TAILQ_HEAD(, lacp_port) la_ports; /* distributing ports */
struct lacp_peerinfo la_partner;
struct lacp_peerinfo la_actor;
int la_pending; /* number of ports in wait_while */
};
struct lacp_softc {
struct lagg_softc *lsc_softc;
struct mtx lsc_mtx;
struct lacp_aggregator *lsc_active_aggregator;
TAILQ_HEAD(, lacp_aggregator) lsc_aggregators;
boolean_t lsc_suppress_distributing;
struct callout lsc_transit_callout;
struct callout lsc_callout;
LIST_HEAD(, lacp_port) lsc_ports;
struct lacp_portmap lsc_pmap[2];
volatile u_int lsc_activemap;
u_int32_t lsc_hashkey;
struct {
u_int32_t lsc_rx_test;
u_int32_t lsc_tx_test;
} lsc_debug;
u_int32_t lsc_strict_mode;
boolean_t lsc_fast_timeout; /* if set, fast timeout */
};
#define LACP_TYPE_ACTORINFO 1
#define LACP_TYPE_PARTNERINFO 2
#define LACP_TYPE_COLLECTORINFO 3
/* timeout values (in sec) */
#define LACP_FAST_PERIODIC_TIME (1)
#define LACP_SLOW_PERIODIC_TIME (30)
#define LACP_SHORT_TIMEOUT_TIME (3 * LACP_FAST_PERIODIC_TIME)
#define LACP_LONG_TIMEOUT_TIME (3 * LACP_SLOW_PERIODIC_TIME)
#define LACP_CHURN_DETECTION_TIME (60)
#define LACP_AGGREGATE_WAIT_TIME (2)
#define LACP_TRANSIT_DELAY 3000 /* in msec */
#define LACP_STATE_EQ(s1, s2, mask) \
((((s1) ^ (s2)) & (mask)) == 0)
#define LACP_SYS_PRI(peer) (peer).lip_systemid.lsi_prio
#define LACP_PORT(_lp) ((struct lacp_port *)(_lp)->lp_psc)
#define LACP_SOFTC(_sc) ((struct lacp_softc *)(_sc)->sc_psc)
#define LACP_LOCK_INIT(_lsc) mtx_init(&(_lsc)->lsc_mtx, \
"lacp mtx", NULL, MTX_DEF)
#define LACP_LOCK_DESTROY(_lsc) mtx_destroy(&(_lsc)->lsc_mtx)
#define LACP_LOCK(_lsc) mtx_lock(&(_lsc)->lsc_mtx)
#define LACP_UNLOCK(_lsc) mtx_unlock(&(_lsc)->lsc_mtx)
#define LACP_LOCK_ASSERT(_lsc) mtx_assert(&(_lsc)->lsc_mtx, MA_OWNED)
struct mbuf *lacp_input(struct lagg_port *, struct mbuf *);
struct lagg_port *lacp_select_tx_port(struct lagg_softc *, struct mbuf *);
#ifdef RATELIMIT
struct lagg_port *lacp_select_tx_port_by_hash(struct lagg_softc *, uint32_t);
#endif
void lacp_attach(struct lagg_softc *);
void lacp_detach(void *);
void lacp_init(struct lagg_softc *);
void lacp_stop(struct lagg_softc *);
int lacp_port_create(struct lagg_port *);
void lacp_port_destroy(struct lagg_port *);
void lacp_linkstate(struct lagg_port *);
void lacp_req(struct lagg_softc *, void *);
void lacp_portreq(struct lagg_port *, void *);
static __inline int
lacp_isactive(struct lagg_port *lgp)
{
struct lacp_port *lp = LACP_PORT(lgp);
struct lacp_softc *lsc = lp->lp_lsc;
struct lacp_aggregator *la = lp->lp_aggregator;
/* This port is joined to the active aggregator */
if (la != NULL && la == lsc->lsc_active_aggregator)
return (1);
return (0);
}
static __inline int
lacp_iscollecting(struct lagg_port *lgp)
{
struct lacp_port *lp = LACP_PORT(lgp);
return ((lp->lp_state & LACP_STATE_COLLECTING) != 0);
}
static __inline int
lacp_isdistributing(struct lagg_port *lgp)
{
struct lacp_port *lp = LACP_PORT(lgp);
return ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0);
}
/* following constants don't include terminating NUL */
#define LACP_MACSTR_MAX (2*6 + 5)
#define LACP_SYSTEMPRIOSTR_MAX (4)
#define LACP_SYSTEMIDSTR_MAX (LACP_SYSTEMPRIOSTR_MAX + 1 + LACP_MACSTR_MAX)
#define LACP_PORTPRIOSTR_MAX (4)
#define LACP_PORTNOSTR_MAX (4)
#define LACP_PORTIDSTR_MAX (LACP_PORTPRIOSTR_MAX + 1 + LACP_PORTNOSTR_MAX)
#define LACP_KEYSTR_MAX (4)
#define LACP_PARTNERSTR_MAX \
(1 + LACP_SYSTEMIDSTR_MAX + 1 + LACP_KEYSTR_MAX + 1 \
+ LACP_PORTIDSTR_MAX + 1)
#define LACP_LAGIDSTR_MAX \
(1 + LACP_PARTNERSTR_MAX + 1 + LACP_PARTNERSTR_MAX + 1)
#define LACP_STATESTR_MAX (255) /* XXX */
#endif /* _KERNEL */
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