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b47888ceba
tolerance. This driver allows aggregation of multiple network interfaces as
one virtual interface using a number of different protocols/algorithms.
failover - Sends traffic through the secondary port if the master becomes
inactive.
fec - Supports Cisco Fast EtherChannel.
lacp - Supports the IEEE 802.3ad Link Aggregation Control Protocol
(LACP) and the Marker Protocol.
loadbalance - Static loadbalancing using an outgoing hash.
roundrobin - Distributes outgoing traffic using a round-robin scheduler
through all active ports.
This code was obtained from OpenBSD and this also includes 802.3ad LACP support
from agr(4) in NetBSD.
210 lines
6.6 KiB
C
210 lines
6.6 KiB
C
/* $OpenBSD: if_trunk.h,v 1.11 2007/01/31 06:20:19 reyk Exp $ */
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/*
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* Copyright (c) 2005, 2006 Reyk Floeter <reyk@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* $FreeBSD$
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*/
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#ifndef _NET_TRUNK_H
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#define _NET_TRUNK_H
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/*
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* Global definitions
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*/
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#define TRUNK_MAX_PORTS 32 /* logically */
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#define TRUNK_MAX_NAMESIZE 32 /* name of a protocol */
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#define TRUNK_MAX_STACKING 4 /* maximum number of stacked trunks */
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/* Port flags */
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#define TRUNK_PORT_SLAVE 0x00000000 /* normal enslaved port */
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#define TRUNK_PORT_MASTER 0x00000001 /* primary port */
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#define TRUNK_PORT_STACK 0x00000002 /* stacked trunk port */
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#define TRUNK_PORT_ACTIVE 0x00000004 /* port is active */
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#define TRUNK_PORT_COLLECTING 0x00000008 /* port is active */
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#define TRUNK_PORT_DISTRIBUTING 0x00000010 /* port is active */
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#define TRUNK_PORT_GLOBAL 0x80000000 /* IOCTL: global flag */
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#define TRUNK_PORT_BITS "\20\01MASTER\02STACK\03ACTIVE\04COLLECTING" \
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"\05DISTRIBUTING"
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/* Supported trunk PROTOs */
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#define TRUNK_PROTO_NONE 0 /* no trunk protocol defined */
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#define TRUNK_PROTO_ROUNDROBIN 1 /* simple round robin */
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#define TRUNK_PROTO_FAILOVER 2 /* active failover */
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#define TRUNK_PROTO_LOADBALANCE 3 /* loadbalance */
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#define TRUNK_PROTO_LACP 4 /* 802.3ad lacp */
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#define TRUNK_PROTO_ETHERCHANNEL 5 /* Cisco FEC */
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#define TRUNK_PROTO_MAX 6
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struct trunk_protos {
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const char *tpr_name;
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int tpr_proto;
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};
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#define TRUNK_PROTO_DEFAULT TRUNK_PROTO_FAILOVER
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#define TRUNK_PROTOS { \
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{ "failover", TRUNK_PROTO_FAILOVER }, \
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{ "fec", TRUNK_PROTO_ETHERCHANNEL }, \
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{ "lacp", TRUNK_PROTO_LACP }, \
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{ "loadbalance", TRUNK_PROTO_LOADBALANCE }, \
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{ "roundrobin", TRUNK_PROTO_ROUNDROBIN }, \
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{ "none", TRUNK_PROTO_NONE }, \
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{ "default", TRUNK_PROTO_DEFAULT } \
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}
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/*
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* Trunk ioctls.
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*/
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/* Trunk port settings */
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struct trunk_reqport {
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char rp_ifname[IFNAMSIZ]; /* name of the trunk */
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char rp_portname[IFNAMSIZ]; /* name of the port */
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u_int32_t rp_prio; /* port priority */
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u_int32_t rp_flags; /* port flags */
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};
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#define SIOCGTRUNKPORT _IOWR('i', 140, struct trunk_reqport)
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#define SIOCSTRUNKPORT _IOW('i', 141, struct trunk_reqport)
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#define SIOCSTRUNKDELPORT _IOW('i', 142, struct trunk_reqport)
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/* Trunk, ports and options */
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struct trunk_reqall {
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char ra_ifname[IFNAMSIZ]; /* name of the trunk */
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u_int ra_proto; /* trunk protocol */
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size_t ra_size; /* size of buffer */
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struct trunk_reqport *ra_port; /* allocated buffer */
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int ra_ports; /* total port count */
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};
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#define SIOCGTRUNK _IOWR('i', 143, struct trunk_reqall)
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#define SIOCSTRUNK _IOW('i', 144, struct trunk_reqall)
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#ifdef _KERNEL
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/*
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* Internal kernel part
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*/
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#define tp_ifname tp_ifp->if_xname /* interface name */
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#define tp_link_state tp_ifp->if_link_state /* link state */
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#define tp_capabilities tp_ifp->if_capabilities /* capabilities */
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#define TRUNK_PORTACTIVE(_tp) ( \
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((_tp)->tp_link_state == LINK_STATE_UP) && \
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((_tp)->tp_ifp->if_flags & IFF_UP) \
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)
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#define mc_enm mc_u.mcu_enm
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struct trunk_ifreq {
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union {
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struct ifreq ifreq;
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struct {
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char ifr_name[IFNAMSIZ];
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struct sockaddr_storage ifr_ss;
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} ifreq_storage;
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} ifreq;
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};
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#define tr_ifflags tr_ifp->if_flags /* flags */
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#define tr_ifname tr_ifp->if_xname /* name */
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#define tr_capabilities tr_ifp->if_capabilities /* capabilities */
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#define IFCAP_TRUNK_MASK 0xffff0000 /* private capabilities */
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#define IFCAP_TRUNK_FULLDUPLEX 0x00010000 /* full duplex with >1 ports */
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/* Private data used by the loadbalancing protocol */
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#define TRUNK_LB_MAXKEYS 8
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struct trunk_lb {
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u_int32_t lb_key;
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struct trunk_port *lb_ports[TRUNK_MAX_PORTS];
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};
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struct trunk_mc {
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union {
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struct ether_multi *mcu_enm;
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} mc_u;
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struct sockaddr_storage mc_addr;
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SLIST_ENTRY(trunk_mc) mc_entries;
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};
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struct trunk_softc {
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struct ifnet *tr_ifp; /* virtual interface */
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struct mtx tr_mtx;
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int tr_proto; /* trunk protocol */
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u_int tr_count; /* number of ports */
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struct trunk_port *tr_primary; /* primary port */
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struct ifmedia tr_media; /* media config */
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caddr_t tr_psc; /* protocol data */
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SLIST_HEAD(__tplhd, trunk_port) tr_ports; /* list of interfaces */
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SLIST_ENTRY(trunk_softc) tr_entries;
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SLIST_HEAD(__mclhd, trunk_mc) tr_mc_head; /* multicast addresses */
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/* Trunk protocol callbacks */
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int (*tr_detach)(struct trunk_softc *);
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int (*tr_start)(struct trunk_softc *, struct mbuf *);
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struct mbuf *(*tr_input)(struct trunk_softc *, struct trunk_port *,
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struct mbuf *);
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int (*tr_port_create)(struct trunk_port *);
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void (*tr_port_destroy)(struct trunk_port *);
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void (*tr_linkstate)(struct trunk_port *);
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void (*tr_init)(struct trunk_softc *);
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void (*tr_stop)(struct trunk_softc *);
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void (*tr_lladdr)(struct trunk_softc *);
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};
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struct trunk_port {
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struct ifnet *tp_ifp; /* physical interface */
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struct trunk_softc *tp_trunk; /* parent trunk */
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uint8_t tp_lladdr[ETHER_ADDR_LEN];
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u_char tp_iftype; /* interface type */
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uint32_t tp_prio; /* port priority */
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uint32_t tp_flags; /* port flags */
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int tp_ifflags; /* saved ifp flags */
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void *lh_cookie; /* if state hook */
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caddr_t tp_psc; /* protocol data */
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/* Redirected callbacks */
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int (*tp_ioctl)(struct ifnet *, u_long, caddr_t);
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int (*tp_output)(struct ifnet *, struct mbuf *, struct sockaddr *,
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struct rtentry *);
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SLIST_ENTRY(trunk_port) tp_entries;
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};
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#define TRUNK_LOCK_INIT(_tr) mtx_init(&(_tr)->tr_mtx, "if_trunk", NULL, \
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MTX_DEF)
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#define TRUNK_LOCK_DESTROY(_tr) mtx_destroy(&(_tr)->tr_mtx)
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#define TRUNK_LOCK(_tr) mtx_lock(&(_tr)->tr_mtx)
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#define TRUNK_UNLOCK(_tr) mtx_unlock(&(_tr)->tr_mtx)
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#define TRUNK_LOCKED(_tr) mtx_owned(&(_tr)->tr_mtx)
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#define TRUNK_LOCK_ASSERT(_tr) mtx_assert(&(_tr)->tr_mtx, MA_OWNED)
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extern struct mbuf *(*trunk_input_p)(struct ifnet *, struct mbuf *);
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extern void (*trunk_linkstate_p)(struct ifnet *, int );
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int trunk_enqueue(struct ifnet *, struct mbuf *);
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uint32_t trunk_hashmbuf(struct mbuf *, uint32_t);
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#endif /* _KERNEL */
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#endif /* _NET_TRUNK_H */
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