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/* $OpenBSD: if_trunk.h,v 1.12 2007/04/26 08:57:59 reyk Exp $ */
/*
* Copyright (c) 2005, 2006 Reyk Floeter <reyk@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _NET_TRUNK_H
#define _NET_TRUNK_H
/*
* Global definitions
*/
#define TRUNK_MAX_PORTS 32 /* logically */
#define TRUNK_MAX_NAMESIZE 32 /* name of a protocol */
#define TRUNK_MAX_STACKING 4 /* maximum number of stacked trunks */
/* Port flags */
#define TRUNK_PORT_SLAVE 0x00000000 /* normal enslaved port */
#define TRUNK_PORT_MASTER 0x00000001 /* primary port */
#define TRUNK_PORT_STACK 0x00000002 /* stacked trunk port */
#define TRUNK_PORT_ACTIVE 0x00000004 /* port is active */
#define TRUNK_PORT_GLOBAL 0x80000000 /* IOCTL: global flag */
#define TRUNK_PORT_BITS \
"\20\01MASTER\02STACK\03ACTIVE"
/* Supported trunk PROTOs */
enum trunk_proto {
TRUNK_PROTO_NONE = 0, /* no trunk protocol defined */
TRUNK_PROTO_ROUNDROBIN = 1, /* simple round robin */
TRUNK_PROTO_FAILOVER = 2, /* active failover */
TRUNK_PROTO_LOADBALANCE = 3, /* loadbalance */
TRUNK_PROTO_MAX = 4
};
struct trunk_protos {
const char *tpr_name;
enum trunk_proto tpr_proto;
};
#define TRUNK_PROTO_DEFAULT TRUNK_PROTO_ROUNDROBIN
#define TRUNK_PROTOS { \
{ "roundrobin", TRUNK_PROTO_ROUNDROBIN }, \
{ "failover", TRUNK_PROTO_FAILOVER }, \
{ "loadbalance", TRUNK_PROTO_LOADBALANCE }, \
{ "none", TRUNK_PROTO_NONE }, \
{ "default", TRUNK_PROTO_DEFAULT } \
}
/*
* Trunk ioctls.
*/
/* Trunk port settings */
struct trunk_reqport {
char rp_ifname[IFNAMSIZ]; /* name of the trunk */
char rp_portname[IFNAMSIZ]; /* name of the port */
u_int32_t rp_prio; /* port priority */
u_int32_t rp_flags; /* port flags */
};
#define SIOCGTRUNKPORT _IOWR('i', 140, struct trunk_reqport)
#define SIOCSTRUNKPORT _IOW('i', 141, struct trunk_reqport)
#define SIOCSTRUNKDELPORT _IOW('i', 142, struct trunk_reqport)
/* Trunk, ports and options */
struct trunk_reqall {
char ra_ifname[IFNAMSIZ]; /* name of the trunk */
u_int ra_proto; /* trunk protocol */
size_t ra_size; /* size of buffer */
struct trunk_reqport *ra_port; /* allocated buffer */
int ra_ports; /* total port count */
};
#define SIOCGTRUNK _IOWR('i', 143, struct trunk_reqall)
#define SIOCSTRUNK _IOW('i', 144, struct trunk_reqall)
#ifdef _KERNEL
/*
* Internal kernel part
*/
struct trunk_softc;
struct trunk_port {
struct ifnet *tp_if; /* physical interface */
struct trunk_softc *tp_trunk; /* parent trunk */
u_int8_t tp_lladdr[ETHER_ADDR_LEN];
caddr_t tp_psc; /* protocol data */
u_char tp_iftype; /* interface type */
u_int32_t tp_prio; /* port priority */
u_int32_t tp_flags; /* port flags */
void *lh_cookie; /* if state hook */
/* Redirected callbacks */
void (*tp_watchdog)(struct ifnet *);
int (*tp_ioctl)(struct ifnet *, u_long, caddr_t);
SLIST_ENTRY(trunk_port) tp_entries;
};
#define tp_ifname tp_if->if_xname /* interface name */
#define tp_ifflags tp_if->if_flags /* interface flags */
#define tp_link_state tp_if->if_link_state /* link state */
#define tp_capabilities tp_if->if_capabilities /* capabilities */
#define TRUNK_PORTACTIVE(_tp) ( \
(LINK_STATE_IS_UP((_tp)->tp_link_state)) && \
((_tp)->tp_ifflags & IFF_UP) \
)
struct trunk_mc {
union {
struct ether_multi *mcu_enm;
} mc_u;
struct sockaddr_storage mc_addr;
SLIST_ENTRY(trunk_mc) mc_entries;
};
#define mc_enm mc_u.mcu_enm
struct trunk_ifreq {
union {
struct ifreq ifreq;
struct {
char ifr_name[IFNAMSIZ];
struct sockaddr_storage ifr_ss;
} ifreq_storage;
} ifreq;
};
struct trunk_softc {
struct arpcom tr_ac; /* virtual interface */
int tr_unit; /* trunk unit */
enum trunk_proto tr_proto; /* trunk protocol */
u_int tr_count; /* number of ports */
struct trunk_port *tr_primary; /* primary port */
struct ifmedia tr_media; /* media config */
caddr_t tr_psc; /* protocol data */
SLIST_HEAD(__tplhd, trunk_port) tr_ports; /* list of interfaces */
SLIST_ENTRY(trunk_softc) tr_entries;
SLIST_HEAD(__mclhd, trunk_mc) tr_mc_head; /* multicast addresses */
/* Trunk protocol callbacks */
int (*tr_detach)(struct trunk_softc *);
int (*tr_start)(struct trunk_softc *, struct mbuf *);
int (*tr_watchdog)(struct trunk_softc *);
int (*tr_input)(struct trunk_softc *, struct trunk_port *,
struct ether_header *, struct mbuf *);
int (*tr_port_create)(struct trunk_port *);
void (*tr_port_destroy)(struct trunk_port *);
void (*tr_linkstate)(struct trunk_port *);
void (*tr_init)(struct trunk_softc *);
void (*tr_stop)(struct trunk_softc *);
};
#define tr_ifflags tr_ac.ac_if.if_flags /* flags */
#define tr_ifname tr_ac.ac_if.if_xname /* name */
#define tr_capabilities tr_ac.ac_if.if_capabilities /* capabilities */
#define tr_ifindex tr_ac.ac_if.if_index /* int index */
#define tr_lladdr tr_ac.ac_enaddr /* lladdr */
#define IFCAP_TRUNK_MASK 0xffff0000 /* private capabilities */
#define IFCAP_TRUNK_FULLDUPLEX 0x00010000 /* full duplex with >1 ports */
/* Private data used by the loadbalancing protocol */
#define TRUNK_LB_MAXKEYS 8
struct trunk_lb {
u_int32_t lb_key;
struct trunk_port *lb_ports[TRUNK_MAX_PORTS];
};
void trunk_port_ifdetach(struct ifnet *);
int trunk_input(struct ifnet *, struct ether_header *,
struct mbuf *);
int trunk_enqueue(struct ifnet *, struct mbuf *);
u_int32_t trunk_hashmbuf(struct mbuf *, u_int32_t);
#endif /* _KERNEL */
#endif /* _NET_TRUNK_H */
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